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Zauere, Karina. "CRIMINAL LIABILITY OF A JUVENILE PERSON ON BREAKING OF TRAFFIC REGULATIONS." Administrative and Criminal Justice 1, no. 86 (March 31, 2019): 4. http://dx.doi.org/10.17770/acj.v1i86.4225.
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In implementing of the norms provided for by the section 260, article 2 of the of the Republic of Latvia Criminal Law into practice (for breaking of traffic provisions or provisions regarding vehicle operation, if it has been committed by a person operating a vehicle and as a result thereof serious bodily injury has been caused to the victim or death of a person has been caused thereby, the applicable punishment is deprivation of liberty for a period up to eight years, with deprivation of the driver’s licence for a period up to five years), the legislator has not taken into account that this violation may be committed by a minor. It results from the analysis of the provisions of Section 260, article 2, section 7, article 3, and section 65, article 2 stems that section 260, article 2 is a less serious crime, for which a minor is not punishable with deprivation of liberty – the sole main punishment intended by the sanction of the provision in question. Therefore, the appropriate punishment for the committing of such a crime resulting in a death of a person and/or serious bodily injury that threatens the life of a person cannot be applied to a juvenile person. With respect to the specifics of criminal liability of juvenile persons for the violation of section 260, article 2 as it is laid down by the Criminal Law the basic punishment – imprisonment for a period exceeding eight years – is not applicable to juvenile persons. Only the additional punishment of deprivation of the driver’s licence for a period of up to five years, which is disproportionate to the harm caused. In order to enable the application of the basic punishment for the committing of the crime as set out by section 260, article 2 of the Criminal Law ( legal effects: death of a person and/or serious bodily injury), it is necessary to amend the sanction of section 260, , article 2 to the imprisonment for a period exceeding eight years. Subsequently, such an amendment would re-classify the crime as a severe crime committed through negligence and for the committing which the basic punishment – imprisonment would be applicable, as it was most likely intended by the legislator.
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Potter, Deborah Ulinski, and Martin A. Spetich. "APPLIED ECOLOGY SECTION." Bulletin of the Ecological Society of America 86, no. 4 (October 2005): 260. http://dx.doi.org/10.1890/0012-9623(2005)86[260:aes]2.0.co;2.
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Zhang, Zhiguo, Junsheng Nie, and Xiaomin Fang. "Provenance analysis reveals mountain uplift in the midsection of the Altyn Tagh Fault during the Middle Miocene." Canadian Journal of Earth Sciences 54, no. 3 (March 2017): 278–89. http://dx.doi.org/10.1139/cjes-2016-0090.
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The Altyn Tagh Fault (ATF) defines the northern margin of the Tibetan Plateau; therefore, its tectonic history is key to understanding the plateau’s northward growth. However, our understanding of ATF tectonics is incomplete, owing in part to a lack of constraints in detailed basin evolution studies of this region. Approximately 1700 m of Middle Miocene – Pliocene clastic strata extracted from a section of the Yitunbulake Basin adjacent to the midsection of the ATF records the uplift of the Altyn Tagh Range. This paper reports 490 concordant detrital zircon U–Pb ages derived from this set of strata. In addition, paleocurrents and conglomerate clastic compositions were measured to determine the provenance of the basin. The dominant detrital zircon age populations within these sedimentary rocks are 260–240, 500–400, and 950–900 Ma. The 260–240 Ma component decreases sharply above the Lower (Xia) Youshashan (XYSS) Formation. Moreover, we performed (U–Th)/He dating on 260–240 Ma detrital zircons from the XYSS Formation to determine its source region. The results indicate that sandstones in this formation are most likely sourced immediately from plutonic rocks widely distributed in the Eastern Kunlun Mountains. The upward change in detrital zircon U–Pb age components in the section demonstrates that widespread surface uplift of the Akatengneng Mountains in the midsection of the ATF likely occurred after ∼16–15 Ma, which is synchronous with accelerated tectonic deformation along the ATF and a rapid increase in the sedimentation rate in the Qaidam Basin since the Middle Miocene.
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Shivanna, Amarpali K., Spandana S., and Rajani Vaidya. "The clinical study of vaginal birth after caesarean section." International Journal of Reproduction, Contraception, Obstetrics and Gynecology 9, no. 12 (November 26, 2020): 4855. http://dx.doi.org/10.18203/2320-1770.ijrcog20204957.
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Background: VBAC has reduced the rate of repeat caesarean section in modern medicine. VBAC-TOL is successful in 60-80% of acceptable candidates if applied to all patients presenting with prior caesarean procedure (8.2-8.5%), there is potential to increase the overall vaginal delivery rate by 5%. Though the safety of VBAC in carefully selected patients have been demonstrated in several studies, controversy continues over when to advise patients who had caesarean section to undergo TOL. The purpose of current study was to know the success of VBAC, to know the maternal morbidity and mortality and foetal outcome in VBAC group.Methods: It was a prospective study performed on women with one previous LSCS admitted to tertiary care hospital for a period of one year from August 2018 to August 2019 at DM Waynad institute of medical sciences, Waynad.Results: In the present study 292 women with one previous LSCS were selected, among them 32 women had elective LSCS for various indications, 260 women underwent TOL. Among 260 women, 152 women achieved VBAC (58.46%) and 108 women underwent LSCS following failed TOL. Maternal morbidity was 9.61%. The incidence of scar dehiscence was 2.69% and uterine rupture was 0.38%. There was no maternal and foetal mortality in this study. NICU admission was 4.6%.Conclusions: Trial of labour should be encouraged in women with one previous LSCS with no obstetric complications.
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Chan, Yolanda H. Y., Wai-Ka Hung, Kong-Ling Mak, Marcus W. L. Ying, Miranda C. M. Chan, and Chun-Ying Lui. "Intra-operative Assessment of Axillary Sentinel Lymph Nodes by Frozen Section—An Observational Study of 260 Procedures." Asian Journal of Surgery 34, no. 2 (April 2011): 81–85. http://dx.doi.org/10.1016/s1015-9584(11)60024-9.
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Kontny, Agnes, Helga de Wall, Thomas G. Sharp, and Mihály Pósfai. "Mineralogy and magnetic behavior of pyrrhotite from a 260 °C section at the KTB drilling site, Germany." American Mineralogist 85, no. 10 (October 2000): 1416–27. http://dx.doi.org/10.2138/am-2000-1010.
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Зайцев, Д. В. "Proto-Entailment in RS logic." Logical Investigations 19 (April 9, 2013): 260–72. http://dx.doi.org/10.21146/2074-1472-2013-19-0-260-272.
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In this paper I propose a formalization of proto-entailment relation introduced by V. Shalak by means of RS logic. The first section clarifies the idea and formal developments of RS logic, which is the logic of Rational Subject. In the second section I will very briefly introduce the conception of proto-entailment as it was promoted in Shalak’s writings. The third section contains the formal account for proto-entailment and axiotimatization of resulting logic.
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Cain, Daniel J., James L. Carter, Steven V. Fend, Samuel N. Luoma, Charles N. Alpers, and Howard E. Taylor. "Metal exposure in a benthic macroinvertebrate, Hydropsyche californica, related to mine drainage in the Sacramento River." Canadian Journal of Fisheries and Aquatic Sciences 57, no. 2 (February 1, 2000): 380–90. http://dx.doi.org/10.1139/f99-260.
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A biomonitoring technique was employed to complement studies of metal transport in the upper Sacramento River affected by acid mine drainage. Metals (Al, Cd, Cu, Fe, Hg, Pb, and Zn) were determined in a resident invertebrate, Hydropsyche californica (Insecta: Trichoptera), and streambed sediments (<62 µm) to assess metal contamination within a 111-km section of the river downstream of the mining area. Metals in H. californica also were interpreted to be broadly indicative of metal exposure in fish. Total Hg was determined in the whole body of the insect, whereas Al, Cd, Cu, Fe, Pb, and Zn were additionally separated into operationally defined cytosolic (used as an indicator of exposure to bioavailable metal) and particulate fractions. Total concentrations of Cd, Cu, Hg, Pb, and Zn in sediments were consistent with documented upstream sources of acid mine drainage. Metal distribution patterns in H. californica and sediments were generally consistent for Cd, Cu, and Pb but inconsistent for Hg and Zn. Concentrations in H. californica indicated that bioavailable Cd, Cu, Pb, and Zn was transported at least 120 km downstream of the mine sources. Zinc in H. californica was elevated, but unlike sediments, did not decrease downstream. Mercury in H. californica was not elevated.
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Samad, Nour Abdel, Oriane Hidalgo, Elie Saliba, Sonja Siljak-Yakovlev, Kit Strange, Ilia J. Leitch, and Magda Bou Dagher-Kharrat. "Genome Size Evolution and Dynamics in Iris, with Special Focus on the Section Oncocyclus." Plants 9, no. 12 (December 1, 2020): 1687. http://dx.doi.org/10.3390/plants9121687.
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Insights into genome size dynamics and its evolutionary impact remain limited by the lack of data for many plant groups. One of these is the genus Iris, of which only 53 out of c. 260 species have available genome sizes. In this study, we estimated the C-values for 41 species and subspecies of Iris mainly from the Eastern Mediterranean region. We constructed a phylogenetic framework to shed light on the distribution of genome sizes across subgenera and sections of Iris. Finally, we tested evolutionary models to explore the mode and tempo of genome size evolution during the radiation of section Oncocyclus. Iris as a whole displayed a great variety of C-values; however, they were unequally distributed across the subgenera and sections, suggesting that lineage-specific patterns of genome size diversification have taken place within the genus. The evolutionary model that best fitted our data was the speciational model, as changes in genome size appeared to be mainly associated with speciation events. These results suggest that genome size dynamics may have contributed to the radiation of Oncocyclus irises. In addition, our phylogenetic analysis provided evidence that supports the segregation of the Lebanese population currently attributed to Iris persica as a distinct species.
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Pardo, E., S. Marin, A. J. Ramos, and V. Sanchis. "Occurrence of Ochratoxigenic Fungi and Ochratoxin A in Green Coffee from Different Origins." Food Science and Technology International 10, no. 1 (February 2004): 45–49. http://dx.doi.org/10.1177/1082013204041509.
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Fungal infection and ochratoxin A (OTA) contamination were determined in green coffee samples from different origins, in which OTA-producing fungi were also identified. About 72% of the beans analysed by direct plating presented fungal infection, including species of Aspergillus, Penicillium and Rhizopus. The genus Aspergillus was presented in more than 90% of infected coffee beans. Aspergillus ochraceus and Aspergillus section Nigri isolates represented 2.8 and 65.4%, respectively from the total number of isolates from the coffee beans. The capacity to produce OTA was determined in 260 isolates of A. section Nigri and 19 of A. ochraceus by the agar plug method, giving positive results for 6% of the A. section Nigri isolates and 16% of the A. ochraceus. OTA production was analysed by high performance liquid chromatography. OTA contamination of green coffee beans was analysed by enzyme immunoassay. OTA levels in all samples analysed were above the limit of detection (0.6 mg/kg), with a mean OTA concentration of 6.7 mg/kg.
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Ye, Qin, Jennifer S. Woo, Qunzi Zhao, Ping Wang, Pintong Huang, Lirong Chen, Xin Li, et al. "Fine-Needle Aspiration Versus Frozen Section in the Evaluation of Malignant Thyroid Nodules in Patients With the Diagnosis of Suspicious for Malignancy or Malignancy by Fine-Needle Aspiration." Archives of Pathology & Laboratory Medicine 141, no. 5 (May 1, 2017): 684–89. http://dx.doi.org/10.5858/arpa.2016-0305-oa.
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Context.— The Bethesda System for Reporting Thyroid Cytopathology recommends against the use of intraoperative frozen section (FS) during lobectomy of a thyroid nodule with a fine-needle aspiration (FNA) diagnosis of malignant. Bethesda recommendations for FS in the FNA category of suspicious for malignancy (SFM) is less well-defined. In some institutions in China, FS examination is performed during lobectomy even for FNA-proven malignant cases. Objective.— —To compare the efficacy of FNA versus FS in the evaluation of malignant thyroid lesions. Design.— A 3-year retrospective analysis from a single institution was performed on cases with an FNA diagnosis of SFM or malignant with subsequent FS examination during thyroidectomy. The results of FNA and FS findings were compared to the final thyroidectomy pathology. Results.— —A total of 5832 thyroidectomy procedures were performed: 1265 cases had FNA and FS results available. Fine-needle aspiration gave a diagnosis of SFM to 306 cases and a diagnosis of malignant to 821 cases. Of the SFM cases, 10.5% (32 of 306) had benign/indeterminate, 4.6% (14 of 306) suspicious, and 84.9% (260 of 306) malignant FS results. Final pathology showed 56.3% (18 of 32), 64.3% (9 of 14), and 100% (260 of 260) malignancy rates, respectively. For the malignant FNA group, 10.0% (82 of 821) had benign/indeterminate, 4.4% (36 of 821) suspicious, and 85.6% (703 of 821) malignant FS results. The final pathology showed 96.4% (79 of 82), 97.2% (35 of 36), and 99.9% (702 of 703) malignancy rates, respectively. Conclusions.— Frozen section should not be performed for the malignant FNA category because FS evaluation may result in 10% falsely negative findings. Performing FS for SFM may be better justified; however, more than half of FS cases read as benign in this category had malignant final pathology. Therefore, caution should be taken for FS results even in the SFM group.
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Argani, Pedram, and Emma E. Furth. "Intrahepatic Iron Variation May Greatly Affect the Hepatic Iron Index." International Journal of Surgical Pathology 3, no. 4 (April 1996): 263–66. http://dx.doi.org/10.1177/106689699604030406.
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The quantitative hepatic iron index is considered the gold standard for the diagnosis of primary hemochromatosis. While intrahepatic variability in the amount of stainable iron in histologic sections of liver is well known, the quantitative variability has not been addressed. Eight native livers removed at transplantation for cirrhosis associated with hepatitis C were studied. Iron-stained sections from multiple different areas of each liver were examined, and small areas were graded for iron content on a scale of 0 to 4. The fragments of liver corresponding to these were then cut out of the corresponding section of the paraffin block and sent for iron quantitation. We found that marked quantitative heterogeneity in iron content (>260%) can exist in a given liver, leading, in two cases, to false positive results for the diagnosis of hemochromatosis. In addition, it was found that quantitative iron content did indeed linearly correlate with histologic grading. Thus, intrahepatic variation in iron content in a given liver is yet another reason to interpret the hepatic iron index with caution.
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Khadieva, Taisiya A., Tatiana G. Pokrovskaya, and Yulia Belousova. "Pharmacological correction of endothelial dysfunction using ademethionin and taurine." Research Results in Pharmacology 5, no. 2 (April 19, 2019): 13–21. http://dx.doi.org/10.3897/rrpharmacology.5.32730.
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Introduction: Рharmacological correction of endothelial dysfunction is a urgent problem of modern medicine. Materials and methods: Endothelial dysfunction was simulated in male rats using the e-NOS inhibitor L-NAME (25 mg/kg/day intraperitoneally, for 7 days). Simulation of ADMA-like preeclampsia was performed by intraperitoneal injection of L-NAME to females in the same doses for 7 days (14-20th days of pregnancy). These pathologies were corrected by administering ademethionine in dose 150 mg/kg and taurine at a dose of 260 mg/kg, as well as their combination at the same doses, intragastrically, through an atraumatic probe, once a day. Results: In the group with use of taurine at a dose of 260 mg/kg the coefficient of endothelial dysfunction decreased to the level of intact animals. Use of ademethionine at a dose of 150 mg/kg and taurine at a dose of 260 mg/kg combined resulted in the most pronounced endothelioprotective effect on the ADMA-like preeclampsia model. The coefficient of endothelial dysfunction decreased more than when using monotherapy of these drugs. Morphological studies of myocardiocytes showed that the combination of ademethionine at a dose of 150 mg/kg and taurine at a dose of 260 mg/kg prevented an increase in the cross-section of cardiomyocytes. Discussion: Possibly, ademethionine and taurine have an endothelioprotective effect because of their ability to decrease hyperhomocysteinemia. Conclusion: The investigated drugs showed pronounced endothelioprotective activity and can be recommended for further pre-clinical studies.
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Shetty, Shukla S., Sneha Sneha, and Prathusha K. "Titrated Oral Misoprostol Solution Compared with Intravenous Oxytocin Infusion for Labour Augmentation." Journal of Evolution of Medical and Dental Sciences 10, no. 17 (April 26, 2021): 1219–23. http://dx.doi.org/10.14260/jemds/2021/260.
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BACKGROUND The ability to induce and augment labour has been of keen interest to many societies from the time immemorial till date. For majority of the women, the process of labour starts spontaneously at or near term and would result in vaginal “delivery.”1 Augmentation refers to the stimulation of spontaneous contractions that are considered inadequate because of failed cervical dilatation and foetal descent5. The purpose should be to relieve the parturient from the prolonged painful and exhausting delivery process into a short time frame. We wanted to compare the efficacy of titrated oral misoprostol solution with that of IV oxytocin infusion for augmentation of labour and determine the indications for failure of the augmentation process. METHODS The present study is a randomized control trial. 200 patients requiring labour augmentation were divided randomly into two groups by the method of colour code cards that were picked by the patients themselves from November 2011 to October 2013. Titrated oral misoprostol (TOM) solution 20 ml (1 μg / ml, 20 μg total) given for one group every hourly until the contractions were adequate. If adequate contractions were not achieved even after 4 doses, then, the dose was increased to 40 μg till adequate contractions were achieved. Another group received Oxytocin IV infusion with the maximum dosing rate of 20 mill units / min. RESULTS 200 women were enrolled in the study, of whom 100 were given titrated oral misoprostol solution, and 100 were given intravenous oxytocin for labour augmentation. The main outcome of augmentation to delivery interval time was 4 hours in TOM and 4.2 hours in oxytocin group. 88 % and 85 % achieved vaginal delivery within 12 hours in TOM and IV oxytocin group respectively. 8 % and 4 % in the TOM and IV oxytocin group underwent lower segment caesarean section (LSCS) in view of failure to progress, whereas 2 % and 8 % in TOM and oxytocin group had LSCS in view of foetal distress. APGAR score was normal in both the groups. CONCLUSIONS Titrated oral misoprostol solution is as efficacious as IV Oxytocin infusion for labour augmentation. It is safe, inexpensive and easy to use. Augmentation-to-delivery interval is very much reduced with the use of titrated oral misoprostol solution and the incidence of Caesarean section is comparable to that of IV oxytocin group. KEY WORDS Tom, Oxytocin, Augmentation, Labour
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Fursa, Vadym. "Problematic issues relating to the age of the victim of the corruption of minors." Naukovyy Visnyk Dnipropetrovs'kogo Derzhavnogo Universytetu Vnutrishnikh Sprav 5, no. 5 (December 30, 2020): 260–63. http://dx.doi.org/10.31733/2078-3566-2020-5-260-263.
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In the article, based on the analysis of theoretical developments in criminal law and current provi-sions of Section IV of the Special Part of the Criminal Code of Ukraine, an attempt is made to analyze the institution of a victim of lewd acts. In particular, the article states that the Law of Ukraine of March 14, 2018 "On Amendments to the Criminal Code of Ukraine on Protection of Children from Sexual Abuse and Sexual Exploitation" amended the wording of Articles 155 and 156 of the Criminal Code of Ukraine and actually met the requirements of Art. 18 of the Council of Europe Convention on the Protection of Children against Sexual Exploitation and Sexual Abuse as regards the recommendation to member states to determine the age at which sexual intercourse with a child is prohibited, even with the latter's voluntary consent, stipulating that any sexual age is prohibited relationship with a minor is 16 years old.
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Fouquereau, Evelyne, Anne Fernandez, and Etienne Mullet. "The Retirement Satisfaction Inventory: Factor Structure in a French Sample." European Journal of Psychological Assessment 15, no. 1 (January 1999): 49–56. http://dx.doi.org/10.1027//1015-5759.15.1.49.
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Summary: The Retirement Satisfaction Inventory ( Floyd, Haynes, Doll, Winemiller, Lemsky, Burgy, Werle, & Heilman, 1992 ) was applied to a heterogeneous sample of male (n = 295) and female (n = 260) French retirees. Exploratory and confirmatory factor analyses produced consistent subscales. In the sections on “Reasons for retirement” and “Sources of enjoyment” of the inventory, the factor structure observed was similar to that observed in the American sample. Four and three factors were identified, respectively, and they are interpretable in the terms proposed by Floyd et al. (1992) . In the section “Satisfaction with life,” there were more discrepancies between American and French results. “Overall satisfaction with retirement” was reasonably well predicted thanks to the combination of four predictors: satisfaction with health and resources, anticipated satisfaction, satisfaction with marriage and family, and regained freedom and control. As in Floyd et al. (1992) , few effects regarding age, gender, socioeconomic status, and length of retirement were found.
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Hall, James M., Charles Walls, Mark Williamson, and Bing-Xi Wang. "Depth trends in magnetic properties in an area of prolonged cold seawater drawdown in uppermost Troodos-type oceanic crust." Canadian Journal of Earth Sciences 24, no. 5 (May 1, 1987): 941–52. http://dx.doi.org/10.1139/e87-092.
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Study of the oxide minerals and measurements of the magnetic properties of about 100 samples distributed over a 475 m continuous drill-core section from the uppermost part of an extrusive sequence of the Troodos, Cyprus, ophiolite close to 35°02′N, 33°11′E, in the vicinity of Malounda, yields the following principal results: (1) Low-temperature alteration is intense to a depth of 260 m, below which it is relatively much subdued. (2) Saturation magnetization, natural remanence intensity, and initial susceptibility all increase continuously with depth throughout the section. (3) Curie temperature decreases with depth to 260 m, below which a change in the style of the thermal decay of magnetization behaviour takes place. (4) Pillowed and massive flows differ in their magnetic properties.The results are consistent with the downwards decrease in low-temperature alteration also noted by K. Gillis from the distribution of secondary minerals. The downwards variations in magnetic properties closely follow in both sense and magnitude the trends observed in DSDP hole 417A, where marked downwards decrease in low-temperature alteration also occurs. This comparison and the discontinuous nature of the lower units of the Troodos sedimentary cover in the vicinity of hole CY-1 support the interpretation of the upper, reddened facies of the Troodos extrusive sequence as being due to prolonged drawdown of cold seawater and suggest that the magnetization of at least the upper part of the Troodos ophiolite is a reliable guide to ocean crust magnetization.
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Yaschuk, A. G., L. A. Dautova, A. A. Tyurina, and A. G. Imelbaeva. "EVALUATION OF RESULTS OF SIMULTANEOUS MYOMECTOMY AND CESAREAN SECTION." Creative surgery and oncology 8, no. 1 (August 4, 2018): 45–51. http://dx.doi.org/10.24060/2076-3093-2018-8-1-45-51.
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Introduction. Myoma of the uterus is the most common neoplasm of the female reproductive system. The frequency of combination of uterine fibroids and pregnancy varies from 1.6% to 10.7%, often fibroids occur in pregnant women of late reproductive age. Traditionally, myomectomy during caesarean section was not recommended because of the risk of bleeding and postoperative complications. To assess the safety and feasibility of a one-stage myomectomy in a caesarean section, this study was conducted.Materials and methods. From 2010 to 2015, we examined 260 pregnant women with uterine myoma, who had a cesarean section with a single-stage myomectomy. The data obtained during the survey were compared with the data of 96 women from the control group. We study assessment of intraoperative blood loss, pre- and postoperative hemoglobin levels, duration of hospitalization.Results. Statistically significant differences in intraoperative blood loss, changes in hemoglobin levels and in the duration of hospitalization between the examined groups of women were not revealed. A prognostic model has been developed to assess risk factors for intraoperative blood loss of more than 1000 ml.Conclusion. The size, localization of myomatous nodes are not risk factors for high blood loss in abdominal delivery with a one-stage myomectomy. The factor of risk of hemorrhage is multiple uterine fibroids, whereas the size of myomatous nodes less than 5 cm can be regarded as a protective factor for blood loss. The study showed that a one-stage myomectomy with a caesarean section is safe and can be performed with the surgeon’s experience.
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Kritten, L., A. Butz, M. P. Chipperfield, M. Dorf, S. Dhomse, R. Hossaini, H. Oelhaf, C. Prados-Roman, G. Wetzel, and K. Pfeilsticker. "Constraining the N<sub>2</sub>O<sub>5</sub> UV absorption cross-section from spectroscopic trace gas measurements in the tropical mid-stratosphere." Atmospheric Chemistry and Physics Discussions 14, no. 4 (February 20, 2014): 4687–721. http://dx.doi.org/10.5194/acpd-14-4687-2014.
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Abstract. The absorption cross-section of N2O5, σN2O5(λ, T), which is known from laboratory measurements with the uncertainty of a factor of 2 (Table 4-2 in JPL-2011, Sander et al., 2011), was investigated by balloon-borne observations of the relevant trace gases in the tropical mid-stratosphere. The method relies on the observation of the diurnal variation of NO2 supported by detailed photochemical modelling of NOy (NOx(= NO + NO2) + NO3 + 2N2O5 + ClONO2 + HO2NO2 +BrONO2 + HNO3) photochemistry. Simulations are initialised with O3 measured by direct sun observations, the NOy partitioning from MIPAS-B (Michelson Interferometer for Passive Atmospheric Sounding-Balloon) observations in similar air masses at nighttime, and all other relevant species from simulations of the SLIMCAT chemical transport model (CTM). Best agreement between the simulated and observed diurnal increase of NO2 is found if the σN2O5(λ, T) is scaled by a factor of 1.6 ± 0.8 in the UV-C (200–260 nm) and by a factor of 0.9 ± 0.26 in the UV-B/A (260–350 nm), compared to current recommendations. In consequence, at 30 km altitude, the N2O5 lifetime against photolysis becomes a factor of 0.77 shorter at solar zenith angle (SZA) of 30° than using the recommended σN2O5 (λ, T), and stays more or less constant at SZAs of 60°. Our scaled N2O5 photolysis frequency slightly reduces the lifetime (0.2–0.6%) of ozone in the tropical mid- and upper stratosphere, but not to an extent to be important for global ozone.
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Klykov, Mihail V., Tatyana V. Alushkina, and Yuriy A. Zharinov. "INCREASING OIL CONVERSION RATIO BY THE OPERATIONAL EFFICIENCY IMPROVEMENT OF THE VACUUM SECTION OF THE CDU/VDU-6 UNIT." Oil and Gas Business, no. 1 (February 2020): 260. http://dx.doi.org/10.17122/ogbus-2020-1-260-281.
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Ebrahimi, Elham, Zahra Karimian, Sakineh Kolahdozan, Mohammad Hassan Emamian, and Nahid Bolbolhaghighi. "Attachment Behaviors in Physiological Birth Versus Cesarean Section." International Journal of Women's Health and Reproduction Sciences 8, no. 2 (July 20, 2018): 215–20. http://dx.doi.org/10.15296/ijwhr.2020.34.
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Objectives: Attachment can be described as a powerful bond between two individuals, in this case, between the mother and child. This process is started during pregnancy and completed after childbearing. Thus, delivery time, as a turning point between two stages of attachment is very important. Accordingly, the present study aimed to investigate the probable relations between the mother to child attachment and the mode of delivery. Materials and Methods: In this descriptive-analytical study, 260 pregnant women were included based on specific inclusion criteria, who were in the age range of 15-45 years old and the gestational age between 37 to 42 weeks and were the candidate for physiological delivery or cesarean section. After obtaining the constant written form, the demographic information questionnaire was handed to the participants. One hour after delivery, the attachment questionnaire was completed by the researcher in the postpartum ward. Finally, the Spielberg anxiety inventory for each of the samples was completed up to one hour after delivery. Results: Based on the findings, the participants of the physiological delivery group showed more positive attachment behaviors in comparison with the other group. Further, some domains of attachment such as looking, caressing and rocking the cradle in the subtypes of emotional behaviors, as well as contiguous behaviors and caring behaviors significantly differed among the participants (P<0.05). Eventually, the participants experienced higher levels of anxiety in the cesarean delivery group, but the differences between the groups were not significant (P>0.005) Conclusions: In sum, the results of the current study indicated that mothers who engaged in physiological delivery had higher scores regarding mother to child attachment behaviors. In other words, they are more successful to attach their babies compared to the cesarean group. These results are important because various children are born by a cesarean section and an insecure attachment can have many negative effects for the child.
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Honus, Stanislav, and Dagmar Juchelková. "Comparison of Numeric Methods that Simulate Energy Transfer by Radiation." Applied Mechanics and Materials 260-261 (December 2012): 605–10. http://dx.doi.org/10.4028/www.scientific.net/amm.260-261.605.
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The publication deals with the comparison of mathematic models that simulate heat transfer by radiation and of models of spectral characteristics of the burnt gases. The heat transfer in the combustion chamber with the shape of rectangular cross-section of 200 x 288 mm and 1,000 mm high has been numerically analysed by means of the individual models. A low pressure burner of the ejection type and of the power output from 20 to 40 kWs is located in the lower part of the combustion chamber. As the heating gas, methane is used. The interest is especially focused on the evaluation of the radiation intensity in the combustion chamber and on the heat fluxes to the walls that are predicted by the models. Results of the P1 and Discrete Transfer models and results of the Gray and MultiGray models of spectral characteristics of the burnt gases have been compared. A part of the research is also the recommendation dealing with the individual models usability.
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Gebreegziabher Hailu, Areaya, Tsegaye Kebede Fanta, Fissaha Tekulu Welay, Natnael Etsay Assefa, Surafel Aregawi Hadera, Gebrekiros Aregawi Gebremeskel, Hagos Weldeslassie Gebremedhin, and Guesh Gebreayezgi Asefa. "Determinants of Cesarean Section Deliveries in Public Hospitals of Addis Ababa, Ethiopia, 2018/19: A Case-Control Study." Obstetrics and Gynecology International 2020 (April 20, 2020): 1–7. http://dx.doi.org/10.1155/2020/9018747.
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Objective. The objective of this study was to assess the determinants of cesarean section deliveries in public hospitals of Addis Ababa, Ethiopia, 2019. Method. A hospital-based unmatched case-control study was conducted to study 780 (260 cases and 520 controls) women who delivered in public hospitals of Addis Ababa from August 22 to September 20, 2019. The cases were all mothers who delivered through caesarean section, and controls were all mothers who delivered vaginally in the same time in the study area. Data were collected from the randomly selected women and looking into their cards. Data were entered on EpiData 3.1 and exported to SPSS version 20 for cleaning and analyzing. Binary logistic regression and AOR with 95% CI were used to assess the determinants of caesarean section. Results. Majority of the study participants were in the age category 20–34 years. Nearly more than 1/3rd of the participants (32.7% cases and 34.6% controls) have attended primary school. Most of the cases 217 (83.5%) and few of the controls 21 (4%) possess previous caesarean section. One hundred three (52.3%) of the cases and 329 (63.6%) controls were multi-parous. Previous caesarean delivery (AOR = 6.93, 95% CI; (3.39, 14.16)), singleton pregnancy (AOR = 0.34, 95% CI; (0.12, 0.83)), birth weight less than 2500 gm (AOR = 0.29, 95% CI; (0.18, 0.92)), birth weight greater than 4000 gm (AOR = 16.15 (8.22, 31.74)), completely documented partograph (AOR = 0.13, 95% CI; (0.078, 0.23)), and pregnancy-induced hypertension (AOR = 2.44, 95% CI; (1.46, 4.08)) were significant determinants of caesarean delivery in this study. Conclusion. Previous caesarean section, number of delivery, birth weight, partograph documentation, and pregnancy-induced hypertension had significant association with caesarean section delivery in this study.
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Xie, Conghui, Weiqi Xu, Junfeng Wang, Qingqing Wang, Dantong Liu, Guiqian Tang, Ping Chen, et al. "Vertical characterization of aerosol optical properties and brown carbon in winter in urban Beijing, China." Atmospheric Chemistry and Physics 19, no. 1 (January 4, 2019): 165–79. http://dx.doi.org/10.5194/acp-19-165-2019.
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Abstract. Aerosol particles are of importance in the Earth's radiation budget since they scatter and absorb sunlight. While extensive studies of aerosol optical properties have been conducted at ground sites, vertical measurements and characterization are very limited in megacities. In this work, we present simultaneous real-time online measurements of aerosol optical properties at ground level and at 260 m on a meteorological tower from 16 November to 13 December in 2016 in Beijing along with measurements of continuous vertical profiles during two haze episodes. The average (±1σ) scattering and absorption coefficients (bsca and babs; λ=630 nm) were 337.6 (±356.0) and 36.6 (±33.9) Mm−1 at 260 m, which were 26.5 % and 22.5 % lower than those at ground level. Single scattering albedo (SSA), however, was comparable between the two heights, with slightly higher values at ground level (0.89±0.04). Although bsca and babs showed overall similar temporal variations between ground level and 260 m, the ratios of 260 m to ground varied substantially from less than 0.4 during the clean stages of haze episodes to > 0.8 in the late afternoon. A more detailed analysis indicates that vertical profiles of bsca, babs, and SSA in the low atmosphere were closely related to the changes in meteorological conditions and mixing layer height. The mass absorption cross section (MAC) of equivalent black carbon (eBC, λ=630 nm) varied substantially from 9.5 to 13.2 m2 g−1 in winter in Beijing, and it was strongly associated with the mass ratio of coating materials on refractory BC (rBC) to rBC (MR), and also the oxidation degree of organics in rBC-containing particles. Our results show that the increases in MAC of eBC in winter were mainly caused by photochemically produced secondary materials. Light absorption of organic carbon (brown carbon, BrC) was also important in winter, which on average accounted for 46 (±8.5) % and 48 (±9.3) % of the total absorption at 370 nm at ground level and 260 m, respectively. A linear regression model combined with positive matrix factorization analysis was used to show that coal combustion was the dominant source contribution of BrC (48 %–55 %) followed by biomass burning (17 %) and photochemically processed secondary organic aerosol (∼20 %) in winter in Beijing.
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Kritten, L., A. Butz, M. P. Chipperfield, M. Dorf, S. Dhomse, R. Hossaini, H. Oelhaf, C. Prados-Roman, G. Wetzel, and K. Pfeilsticker. "Constraining the N<sub>2</sub>O<sub>5</sub> UV absorption cross section from spectroscopic trace gas measurements in the tropical mid-stratosphere." Atmospheric Chemistry and Physics 14, no. 18 (September 16, 2014): 9555–66. http://dx.doi.org/10.5194/acp-14-9555-2014.
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Abstract. The absorption cross section of N2O5, σN2O5(λ, T), which is known from laboratory measurements with the uncertainty of a factor of 2 (Table 4-2 in (Jet Propulsion Laboratory) JPL-2011; the spread in laboratory data, however, points to an uncertainty in the range of 25 to 30%, Sander et al., 2011), was investigated by balloon-borne observations of the relevant trace gases in the tropical mid-stratosphere. The method relies on the observation of the diurnal variation of NO2 by limb scanning DOAS (differential optical absorption spectroscopy) measurements (Weidner et al., 2005; Kritten et al., 2010), supported by detailed photochemical modelling of NOy (NOx(= NO + NO2) + NO3 + 2N2O5 + ClONO2 + HO2NO2 + BrONO2 + HNO3) photochemistry and a non-linear least square fitting of the model result to the NO2 observations. Simulations are initialised with O3 measured by direct sun observations, the NOy partitioning from MIPAS-B (Michelson Interferometer for Passive Atmospheric Sounding – Balloon-borne version) observations in similar air masses at night-time, and all other relevant species from simulations of the SLIMCAT (Single Layer Isentropic Model of Chemistry And Transport) chemical transport model (CTM). Best agreement between the simulated and observed diurnal increase of NO2 is found if the σN2O5(λ, T) is scaled by a factor of 1.6 ± 0.8 in the UV-C (200–260 nm) and by a factor of 0.9 ± 0.26 in the UV-B/A (260–350 nm), compared to current recommendations. As a consequence, at 30 km altitude, the N2O5 lifetime against photolysis becomes a factor of 0.77 shorter at solar zenith angle (SZA) of 30° than using the recommended σN2O5(λ, T), and stays more or less constant at SZAs of 60°. Our scaled N2O5 photolysis frequency slightly reduces the lifetime (0.2–0.6%) of ozone in the tropical mid- and upper stratosphere, but not to an extent to be important for global ozone.
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Al-Thabhawee, Hayder W., and Abbas A. Mohammed. "Reinforcing the Octagonal Web Openings of Castellated Beam by Steel Rings." Al-Qadisiyah Journal for Engineering Sciences 12, no. 1 (April 14, 2019): 7–16. http://dx.doi.org/10.30772/qjes.v12i1.581.
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Castellated steel beams are section steel members with hexagonal or octagonal web openings which they are made from standard hot rolled steel section I or H. The main advantage of these members is their economic material. An additional important advantage is a possibility to guide service ducts through the openings. The presence of the web openings influences the members’ failure behavior around the openings, new local failure modes will come into existence, such as the buckling of the web post between the openings, or yielding around the openings. Castellated beams with octagonal openings usually fail due to web post-buckling because of the increase in depth. The current study focused on improving the behavior of the castellated beam with octagonal openings using steel ring stiffener and adjusting the best dimension and distribution for the stiffeners. All the models of specimens have been fabricated from a parent I section (IPE 140). The models have been modeled and analyzed using finite element software ANSYS (version 15). The analysis results showed that reinforcing octagonal castellated beams by adding steel ring stiffeners around octagonal web opening was very active way to increase the ultimate load for long span, where the ultimate load of reinforced octagonal castellated beam increased up to (286%) compared with parent I-section beam. Economically, the percentage of additional steel material which used to expansion and reinforce the castellated beams (spacer plate and steel ring stiffeners) was (36%) when compared with the weight of parent I-section beam. While the allowable load at deflection (L/180) was (260 %) compared to the allowable load of parent section at the same deflection. The gained benefit was increasing the ultimate and allowable load of reinforced octagonal castellated beams by (186%) and (160%) respectively by using additional steel material only (36%) from the weight of parent I- section, which the additional steel material consisted from the spacer plates and steel rings. Also, the results indicate that the best dimensions for the ring were when thickness equal to the web thickness of the parent section and the width equal to the half of the parent section flange width.
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Ahmad, S. R., and V. G. Foster. "Raman Cross-Section De-Enhancement Phenomenon in the Excitation Profile of the 1347 cm−1 Mode of Nitrobenzene." Applied Spectroscopy 52, no. 1 (January 1998): 70–75. http://dx.doi.org/10.1366/0003702981942348.
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Absolute values of the Raman scattering cross section of the totally symmetric 1347 cm−1 mode of nitrobenzene (NB) were measured over an excitation wavelength range of 260–520 nm. The data, when fitted to the Albrecht A-term preresonance approximation (AAT-PA) theory, showed the value of the enhancing state for the observed resonance to be 247 nm in wavelength units. This is considered to be in good agreement with the charge-transfer state of NB at about 250 nm. However, a deviation from the theory at around 350 nm, in the form of a de-enhancement in the Raman excitation profile (REP), was observed. This effect could not be adequately explained by invoking an interference phenomenon due to additive and subtractive combinations of the Raman tensors corresponding to the enhancing state and an electronically allowed but dipole-forbidden state, as has been attempted by others for benzene and some metal/ligand complexes. This is primarily because an alternative enhancement, either preceding or following this de-enhancement, has not been observed, which is expected from the formalism based on interference between the polarizability tensors representing the enhancing state and the relevent forbidden state. An explanation based on a competitive intersystem transition process in the vicinity of a forbidden state is presented. The forbidden n, Π* state of NB at about 350 nm is known to undergo rapid triplet-state conversion with high quantum yield. The explanation was supported by the anomalous results on the depolarization ratio of the Raman mode at the vicinity of this forbidden band.
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Yang, Hae Jun, and Hyun Do Yun. "Vertical Seam Effect on Seismic Performance of Reinforced Concrete Squat Shear Walls with Rectangular Cross-Section." Advanced Materials Research 663 (February 2013): 159–63. http://dx.doi.org/10.4028/www.scientific.net/amr.663.159.
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In this study, two reinforced concrete (RC) squat shear walls with height-to-length ratio of 0.55 and non-ductile reinforcement details are tested under reversed cyclic loading. Emphasis of the study is placed on the hysteretic behavior and cracking procedure of RC squat shear walls in accordance with the presence and absence of vertical seam on the wall panel. Two specimens had the same rectangular cross-section of 1,100 x 50mm, with wall panel heights of 600mm. To investigate the effect of vertical seams on the wall panel on the structural behavior of shear wall, one wall (CON-S) with three vertical seams with dimension of 260 x 40mm was made and the other (CON-N) was a solid wall without seams. The test results indicated that a squat shear wall with vertical seams exhibited more stable hysteretic behavior than a solid shear wall. Vertical seams on the wall panel improve the ductility and energy dissipation capacity but decrease the maximum strength of RC non-ductile squat shear wall.
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Mitsudo, Jun, and Akira Ishii. "Shape Measurement of Solder Bumps by Shape-from-Focus Using Varifocal Mirror." Journal of Robotics and Mechatronics 18, no. 6 (December 20, 2006): 722–27. http://dx.doi.org/10.20965/jrm.2006.p0722.
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We measured solder bumps on an LSI package board presented for inspection based on the shape from focus. We used a copper-alloy mirror deformed by a piezoelectric actuator as a varifocal mirror to build a motionless yet fast focusing mechanism. The varifocal mirror was at the image focal point of the image-taking lens so that lateral magnification was constant during focusing and orthographic projection was established. A focused plane was shifted along the optical axis with a precision of 1.4μm in a depth range of 1.5mm by driving the varifocal mirror. A magnification of 1.97 was maintained during focusing. Evaluating the curvature of field and removing its effect from the depth data reduced errors. The shape of 208 solder bumps 260-μm high spaced 500μm on the board was measured. The 10mm×10mm board was segmented into partly overlapping 3×4 sections. We captured 101 images in each section with a high-resolution camera at different focal points at 15-μm intervals. The shape of almost the entire upper-hemisphere of a solder bump could be measured. Error in measuring bump heights was less than 12μm.
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Bhukya, Muralidhar Nayak, and Venkata Reddy Kota. "A novel P&OT-Neville’s interpolation MPPT scheme for maximum PV system energy extraction." International Journal of Renewable Energy Development 7, no. 3 (December 15, 2018): 251–60. http://dx.doi.org/10.14710/ijred.7.3.251-260.
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Photovoltaic (PV) system posses an optimal operating pointing, termed as Maximum Power Point (MPP). Using Maximum Power Point Tracking (MPPT) algorithm, MPP of PV system has to be tracked continuously in any climatic conditions. In general, traditional Perturb and Observe (P&OT) MPP tracker is widely used among existing controllers. But, P&OT fails to harvest maximum power from solar panel, in addition oscillations around MPP results in low efficiency of the PV system. The contradiction involved in the traditional controller can be addressed as P&OT operates with a fixed step size. Hence, with large step size MPP can be reached quickly but the magnitude of oscillations around MPP are high. Similarly, when P&OT operated with tiny step size magnitude of oscillations can be reduced at the same time PV system consumes much time to reach MPP. In order to eliminate the contradiction involved with traditional MPPT scheme and effectively optimize PV system energy, this paper put forwards a hybrid MPPT scheme based on P&OT and Neville interpolation. The proposed scheme is executed in two stages. In the first stage, P&OT is operated with a large step size till the voltage reaches near to maximum point. In the second stage, Neville interpolation is used to find the maximum power point. The performance of the proposed scheme is compared with Golden Section Search (GSS) and P&OT MPPT controllers. With the proposed scheme the convergence time required to reach MPP is improved greatly. Experimental prototype is designed and developed to verify the performance of the proposed scheme. Experimental and simulation results provide enough evidence to show superiority of the proposed scheme.Article History: Received December 15th 2017; Received in revised form July 16th 2018; Accepted September 12th 2018; Available onlineHow to Cite This Article: Bhukya, M. N. and Kota, V. R. (2018) A Novel PandOT-Neville’s Interpolation MPPT Scheme for Maximum PV system energy extraction. International Journal of Renewable Energy Development, 7(3), 251-260https://dx.doi.org/10.14710/ijred.7.3.251-260
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Barnes, C. R. "The proposed Cambrian–Ordovician global Boundary stratotype and point (GSSP) in Western Newfoundland, Canada." Geological Magazine 125, no. 4 (July 1988): 381–414. http://dx.doi.org/10.1017/s0016756800013042.
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AbstractSections exposing the Cambrian–Ordovician Boundary interval at Broom Point in western Newfoundland have been proposed earlier for a global systemic boundary stratotype. These lie within the Cow Head Group, a late Middle Cambrian to early Middle Ordovician allochthonous unit of limestone, shale, and conglomerate deposited at the toe of the ancient continental slope and on the adjacent continental rise. Several recent studies have further investigated the stratigraphy, sedimentology, and palaeontology of the Cow Head Group and others are under way on magnetostratigraphy and chemostratigraphy. These aspects are reviewed for six key boundary sections representing proximal to distal facies: Cow Head Ledge, Broom Point South, Broom Point North, St Pauls Inlet Quarry, Martin Point, and Green Point. In particular, new data are presented from 260 conodont samples that yielded 15500 conodonts. This intense sampling has allowed the discrimination of minor hiatuses in the proximal to intermediate facies where conglomerates have eroded and cannibalized underlying strata. New conodont data from Broom Point North have lowered the base of the C. lindstromi Zone into unit 74 conglomerates, thereby making this section unsuitable as a boundary stratotype. New collections from Green Point have yielded abundant conodonts and over 9400 conodonts have been recovered from 77 samples.The conodont, graptolite, and trilobite biostratigraphy through the boundary interval is documented allowing accurate correlation between sections and more precisely revealing small hiatuses in the proximal and intermediate facies. The sequence of conodont zones is: Eoconodontus notchpeakensis, Cordylodus proavus, C. caboti, C. intermedius, C. lindstromi and C. angulatus. These can be correlated with trilobite zones established from both in situ and clast faunas from the proximal to intermediate facies and with graptolite assemblages (of Cooper 1979) especially in the intermediate to distal facies. Three new species of Cordylodus are described (C. andresi, C. hastatus and C. tortus) and the full apparatus of Iapetognathus preaengensis is illustrated.The criteria for selecting a global boundary stratotype and point (GSSP) are reviewed in terms of the Cow Head sections. The Green Point section is shown to meet, and largely surpass, the prerequisites required of a stratotype. The Green Point section is proposed to be the global boundary stratotype with the base of the Ordovician System defined at the base of unit 23, which is the base of the Broom Point Member, Green Point Formation, at a level coincident with the base of the Cordylodus lindstromi Zone. In addition to an abundant and superbly preserved conodont fauna, this section preserves the best sequence of earliest planktic graptolites through a 40 m interval; the first nematophorous graptolites (of Assemblage 1) occur in unit 25, 6.9 m above the base of the C. lindstromi Zone. This level can be readily correlated into the proximal facies where both deep and shallow water trilobites (in situ and in clasts, respectively) show the base of the C. lindstromi Zone to lie within the Symphysurina brevispicata trilobite Subzone.
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Li, Zhongju, Churong Zhou, Zhilan Zhang, and Qiao Wu. "Application of Ultrasonographic Imaging in Fetal Thyroid Function Measurement of Amniotic Hormone Concentration." Journal of Medical Imaging and Health Informatics 11, no. 2 (February 1, 2021): 636–41. http://dx.doi.org/10.1166/jmihi.2021.3332.
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Objective: To investigate the fetal thyroid function using ultrasound imaging combined with amniotic fluid hormone concentration. Method: 380 pregnant women who did pregnancy test in our hospital from August 2015 to August 2017 were selected as the subjects. 260 of them had normal fetal growth indicators, all of them were singletons, with a gestational time of 18–41 weeks. 120 pregnant women underwent cesarean section, parturition, and amniocentesis. All pregnant women had no thyroid related diseases, hypertension, or autoimmune diseases. 3DUS (Three-dimensional ultrasound) and 2DUS (two-dimensional ultrasound) were used to measure the size of fetal thyroid gland, and the amniotic hormone content was measured. Result: The repeatability and consistency of the 3DUS-VOCAL (Voual organ computerized analysis) technique were superior to 2DUS in the measurement of fetal thyroid volume in 20 cases. There were 243 fetal thyroid size-related data collected from 260 fetuses at 18 weeks and 41 weeks of pregnancy. Amniotic fluid FT3, T3 had a certain correlation with gestational age, but amniotic fluid FT4, T4, TSH had no significant correlation with gestational age. 4 cases of fetal hypothyroidism were screened by ultrasound combined with amniotic fluid hormone measurement. Conclusion: The volume of fetal thyroid measured by 3DUS-VOCAL is better than that of 2DUS. Ultrasound combined with amniotic fluid thyroid associated hormone detection is helpful to evaluate fetal thyroid function.
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Marx, Gerard, Pierre Hopmeier, and Dorit Gurfel. "Zinc Alters Fibrin Ultrastructure." Thrombosis and Haemostasis 57, no. 01 (1987): 073–76. http://dx.doi.org/10.1055/s-0038-1651065.
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SummaryTurbidimetric studies indicate that Zn(II) accelerates fibrin gelation [decreases clotting time (CT)] and increases maximal fibrin clot turbidity. For any given level of fibrinogen (0.2-2.6 mg/ ml), the relative fibrin turbidity of thrombin-induced clots increases with Zn(II) in a concentration dependent manner. Zinc-associated turbidity increases are also observed in the presence of 2 mM Ca(II). With citrate, similar turbidity increases are observed, though at higher cation levels. Thus, turbidimetry indicates that the gel formed with Zn(II) is coarser, or has thicker fibre strands. SEM micrographs confirm that fibre thickness ranges from 260 Å to 2600 Å, when Zn(II) levels range from 0-50 uM. With citrate, TEM micrographs reveal amore than 20 x fold increase in fibre diameter (100 Å->2000 Å) with higher Zn(II) (<1 mM) levels. Based on a fibrin monomer cross-section of ~60 Å, the electron micrographs indicate that depending on the Zn(II) levels, fibrin strands are composed of between 2 to 40 monomeric fibrin molecules. Thus, at physiologically relevant levels, Zn(II) can drastically modulate fibrin ultrastructure.
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Cinocca, Andrea, Marco Di Bartolomeo, Roberto Cipollone, and Roberto Carapellucci. "A Definitive Model of a Small-Scale Concentrated Solar Power Hybrid Plant Using Air as Heat Transfer Fluid with a Thermal Storage Section and ORC Plants for Energy Recovery." Energies 13, no. 18 (September 11, 2020): 4741. http://dx.doi.org/10.3390/en13184741.
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The aim of this work was to propose a small-scale Concentrated Solar Power plant using conventional technologies, in order to improve their flexibility and performances, and reinforce their competitiveness compared to traditional systems. Additionally, this study analyzed the possibility of providing continuity of energy production through an optimized hybrid system, which considered thermal energy storage from a gaseous Heat Transfer Fluid, air. It also considered the possibility of recovering part of the energy of the thermodynamic cycle through an Organic Rankine Cycle system with appropriate dimensions. The final outcomes were a 170 kW CSP plant with about 805 MWh of annual electricity production with a global solar capacity of 32.5%, about 900 kWh of thermal storage daily capacity, and an ORC recovery section of 54.2 kW with a specific production of 260 MWh/y.
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Liu, W. Y., Hai Feng Zhang, Zhuang Qi Hu, H. Wang, and X. D. Yao. "Fabrication of Bulk Amorphous Mg65Cu25Gd10 Alloy of 12mm Rod by Water Quenching." Materials Science Forum 488-489 (July 2005): 211–14. http://dx.doi.org/10.4028/www.scientific.net/msf.488-489.211.
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Bulk armorphous Mg65Cu25Gd10 alloy of 12mm rods were prepared by water quenching the molten alloy in the stainless steel tube. Neither cavities nor voids are seen over the whole range and no contrast revealing a crystalline phase is seen over the transverse cross section. The glass transition temperature (Tg), crystallization temperature (Tx), the melting temperature (Tm) and the liquidus temperature (Tl) are measured to be 419K, 492K, 702K, 735K, respectively, for the Mg65Cu25Gd10 alloy with a diameter of 12mm. These temperatures are similar with those of the alloy with a diameter of 8mm produced by metallic mould casting. Both alloys have the same Vickers hardness about 260. Water quenching can further improve the critical diameter of glassy rods, so it is qualified for the formation of the bulk alloys.
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Huai, Wenxin, Gang Chen, and Yuhong Zeng. "Predicting apparent shear stress in prismatic compound open channels using artificial neural networks." Journal of Hydroinformatics 15, no. 1 (September 1, 2012): 138–46. http://dx.doi.org/10.2166/hydro.2012.193.
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The apparent shear stress acting on the vertical interface between main channel and floodplain (with and without vegetation) in prismatic compound open channels was studied using artificial neural networks (ANNs). Apparent shear stress is commonly used to quantify the transverse momentum exchange between sub-areas of the cross section, and its influencing factors include channel geometry, boundary roughness conditions and hydraulic properties of flow. In particular, if vegetations exist, the eco-characteristics of vegetation can be crucial. To mathematically describe the effect of channel symmetry, we present a new expression of width ratio through which the symmetrical and asymmetrical cross section can be distinguished. The effect of vegetation is considered using degree of submersion and the porosity (volume ratio occupied by water). Dimensional analysis was conducted to determine the mathematical formula of apparent shear stress, and seven non-dimensional parameters were selected as the influencing factors. In total, 260 sets of data (including our new experimental series conducted in a compound channel with vegetated floodplain) were used for training and testing a three-layer, feed-forward neural network with Levenberg-Marquardt (LM) as the selected training algorithm. Also, the effects of main influencing factors on the apparent shear stress were investigated.
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Dörfler, Walter, Ingo Feeser, Christel van den Bogaard, Stefan Dreibrodt, Helmut Erlenkeuser, Angelika Kleinmann, Josef Merkt, and Julian Wiethold. "A high-quality annually laminated sequence from Lake Belau, Northern Germany: Revised chronology and its implications for palynological and tephrochronological studies." Holocene 22, no. 12 (June 18, 2012): 1413–26. http://dx.doi.org/10.1177/0959683612449756.
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The annually laminated record of Lake Belau offers an exceptional opportunity to investigate with high temporal resolution Holocene environmental change, aspects of climate history and human impact on the landscape. A new chronology based on varve counts, 14C-datings and heavy metal history has been established, covering the last 9400 years. Based on multiple varve counting on two core sequences, the easily countable laminated section spans about 7850 varve years (modelled age range c. 9430 to 1630 cal. BP). Not all of the record is of the same quality but approximately 69% of the varves sequence is classified to be of high quality and only c. 5% of low quality. The new chronology suggests dates generally c. 260 years older than previously assumed for the laminated section of the record. The implications for the vegetation and land-use history of the region as well as revised datings for pollen stratigraphical events are discussed. Tephra analysis allowed the identification of several cryptotephra layers. New dates for volcanic eruptions are presented for the Lairg B event ( c. 6848 cal. BP, 2s range 6930–6713 cal. BP), the Hekla 4 event ( c. 4396 cal. BP, 2s range 4417–4266 cal. BP), and Hekla 3 eruption ( c. 3095 cal. BP, 2s range 3120–3068 cal. BP).
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Makhija, Bela, Deepika Verma, and Asif Mustafa. "A root cause analysis of increasing caesarean section rates in a tertiary care private hospital in North India." International Journal of Reproduction, Contraception, Obstetrics and Gynecology 8, no. 11 (October 23, 2019): 4531. http://dx.doi.org/10.18203/2320-1770.ijrcog20194888.
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Background: Increase in the incidence of caesarean section is a matter of concern worldwide. Robson’s criteria which is universally accepted now as a way for calculating caesarean rates takes into account only the obstetrical consideration, however, it is noteworthy that many socioeconomic and cultural factors also have a role to play. This study takes into account both Robson’s criteria and common socio-cultural factors which lead to increased caesarean rates with an attempt to suggest ways to curtail this trend.Methods: The study was a hospital based cross-sectional study at a private tertiary care hospital in New Delhi. 1200 consecutive live births after 34 weeks of gestation were analysed over a period of one year.Results: LSCS was the most common mode of delivery 733 (61.1%). 329 (27.4%) had induced labour of which 260 (76.2%) had LSCS. 333 women had elective LSCS. Rates of CDMR were 185 (25.2%) which is very significant. As per Robson’s criteria maximum number of women (318) were in group 2, of which 226 (71.1%) underwent caesarean section.Conclusions: High caesarean rates can be attributed to a multitude of factors. Robson’s criteria are an effective way for analysis of obstetric indications. Other added factors include comorbidities, CDMR, fear of litigations, etc which were analysed.
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Cheng, T.-Y. D. J., and C.-H. V. Chen. "Does service innovation matter? An empirical study on market orientation and supply chain performance." South African Journal of Business Management 48, no. 1 (March 31, 2017): 11–22. http://dx.doi.org/10.4102/sajbm.v48i1.16.
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The objective of this study was to explore how firm service innovation mediates market orientation and business performance. This paper begins with a literature review indicating the themes from which we developed our conceptual framework. Structural equation modeling based on a cross-section (n = 260) of 5 years of supply chain business data (2009–2013) in Greater China was conducted. We concluded that firm market orientation and service innovation exert significantly positive effects on business performance. In addition, the results supported our model that market orientation is mediated by the effect of service innovation on business performance. Market orientation and service innovation had a stronger combined effect on business performance than market orientation alone did. This paper provides implications for how firms can be more effectively synergized amid challenges and gain a competitive advantage in the global supply chain.
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Rahelivololona, Elisette M., Eberhard Fischer, Steven B. Janssens, and Sylvain G. Razafimandimbison. "Phylogeny, infrageneric classification and species delimitation in the Malagasy Impatiens (Balsaminaceae)." PhytoKeys 110 (November 2, 2018): 51–67. http://dx.doi.org/10.3897/phytokeys.110.28216.
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The species-rich genus Impatiens (Balsaminaceae) is represented in Madagascar by no less than 260 species. We conducted molecular phylogenetic analyses of the Malagasy Impatiens based on nuclear and plastid data and 52 accessions (representing 33 species) to: 1) reassess the monophyly of the Malagasy Impatiens; 2) assess the monophyly of the sections Preimpatiens (Humblotianae and Vulgare groups) with spurs and Trimorphopetalum without spurs as delimited by Perrier de la Bâthie, as well as that of the subgenera Impatiens and Trimorphopetalum as defined by Fischer and Rahelivololona; 3) infer the current status of some morphologically variable species; and 4) test whether the species of Impatiens from the Marojejy National Park form a monophyletic group. The Malagasy Impatiens are further confirmed to be paraphyletic with respect of the Comorian I.auricoma. The present sectional and subgeneric classifications of the Malagasy Impatiens are partly supported, with strong support for the monophyly of the sect. or subgen. Trimorphopetalum. Section Preimpatiens was not supported as monophyletic and neither the Humblotianae group nor the Vulgare group is monophyletic. Impatienselatostemmoides, I. “hammarbyoides”, I.inaperta, I.lyallii and I.manaharensis are either para- or polyphyletic and may represent morpho-species. The Impatiens species from the Marojejy National Park do not form a monophyletic group and therefore are suggested to be derived from numerous independent colonisation events from all over Madagascar followed by subsequent diversifications.
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Papanastasiou, D. K., S. A. McKeen, and J. B. Burkholder. "The very short-lived ozone depleting substance CHBr<sub>3</sub> (bromoform): revised UV absorption spectrum, atmospheric lifetime and ozone depletion potential." Atmospheric Chemistry and Physics 14, no. 6 (March 26, 2014): 3017–25. http://dx.doi.org/10.5194/acp-14-3017-2014.
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Abstract. CHBr3 (bromoform) is a short-lived atmospheric trace compound that is primarily of natural origin and is a source of reactive bromine in both the troposphere and stratosphere. Estimating the overall atmospheric impact of CHBr3 and its transport to the stratosphere requires a thorough understanding of its atmospheric loss processes, which are primarily UV photolysis and reaction with the OH radical. In this study, UV absorption cross sections, σ (λ ,T), for CHBr3 were measured at wavelengths between 300 and 345 nm at temperatures between 260 and 330 K using cavity ring-down spectroscopy. The present results are compared with currently recommended values for use in atmospheric models, and the discrepancies are discussed. A parameterization of the CHBr3 UV spectrum for use in atmospheric models is developed, and illustrative photolysis rate calculations are presented to highlight the impact of the revised σ (λ, T) values on its calculated local lifetimes. For example, the photolysis rate in the tropical region obtained with the present spectral data is 10–15% lower (longer lifetime) than obtained using currently recommended cross section values. Seasonally dependent ozone depletion potentials (ODPs) for CHBr3 emitted in the Indian sub-continent were calculated to be 0.10, 0.34, 0.72, and 0.23 (winter, spring, summer, fall) using the semi-empirical relationship of Brioude et al. (2010).
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Melkonyan, A., and M. Chuklin. "Calculation algorithm and software for pipeline vibrations with consideration of internal flow." Transactions of the Krylov State Research Centre S-I, no. 2 (December 28, 2020): 260–65. http://dx.doi.org/10.24937/2542-2324-2020-2-s-i-260-265.
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This paper discusses the development of calculation complex (model, algorithm and software) needed to investigate vibration parameters (amplitudes of displacements, internal forces and support responses) of a constant cross-section pipeline with a perfect incompressible fluid flowing inside it. This paper presents a pipeline model as quasi-monomeric finite-element system. Presently, the study discusses vibration of a straight constant cross-section pipeline resting on two elastic supports. Calculation algorithm is based on the discrete variant of partial-response method. The effect of fluid flow is taken into account as an additional inertial load incorporated, in its turn, by means of corrections and modifications of inertia & stiffness parameters of pipeline model. The study gives calculation expressions for partial responses and partial parameters, needed to implement the algorithm suggested by the authors. The problem formulated in this paper was solved as per specially developed mathematical model taking into account the forces due to the flow in the pipe. The paper also suggests calculation algorithm for vibration parameters of the adopted model. These vibration parameters were obtained in specially developed Koriolis software. The study also investigated the effect of additional inertial load components upon vibration parameters and natural frequencies of the structure at question. All these activities made it possible to accomplish the task of the whole study, i.e. to develop the calculation complex for determination of pipeline vibration parameters.
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Vinh, Vu Duy. "ĐÁNH GIÁ ẢNH HƯỞNG CỦA MỘT SỐ GIẢI PHÁP CÔNG TRÌNH ĐẾN TRAO ĐỔI NƯỚC VÀ VẬN CHUYỂN BÙN CÁT KHU VỰC ĐẦM NẠI (NINH THUẬN)." Tạp chí Khoa học và Công nghệ Biển 17, no. 4 (August 6, 2018): 373–85. http://dx.doi.org/10.15625/1859-3097/17/4/8584.
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With the area of only about 700 ha, Nai lagoon has a great contribution to ecology as well as socioeconomic development of Ninh Hai disctrict and Phan Rang-Thap Cham city (Ninh Thuan province). However, the deposition tendency has occurred recently, making the lagoon shallower. It also causes the decrease in water exchange as well as environmental degradation in this area. Therefore, solutions that increase water exchange and reduce the deposition rate in the Nai lagoon are necessary. Based on the Delft3D model with MORFAC approach, this paper gives some assessments on the impact of coastal engineering solution on water exchange and sediment transport. The simulation scenarios include as extending present jetties to 165 m long, extending present jetties combined with dredging lagoon inlet, extending only northeast jetty to 260 m long combined with dredging lagoon inlet, and dredging all lagoon area. The results show that the change in water exchange is very small (almost below 1%), except in the case of dredging the entire lagoon area, water exchange decreases about 10% (due to the increase of the lagoon water volume) compared with the present. Sediment flux balance at cross-section MCI (Tri Thuy bridge) also changes slightly under influence of coastal engineering works. On the other hand, sediment flux from the coastal zone into the inlet (cross-section 2- MCII) and alongshore to Southwest (cross-section MCIII) have strongly decreased. Especially, in the scenario of extending northeast jetty combined with and dredging the inlet zone, net sediment flux into the inlet decreases from 637 m3/day to 180 m3/day (droughty year) and from 535 m3/day to 80 m3/day in the flood year.
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Kvačkaj, Tibor, Michal Kvačkaj, Volodymir Stoyka, Robert Kočiško, Jana Bidulská, and Julius Bacso. "Influence of ECAR Processing on OFHC Cu Material Properties." Materials Science Forum 667-669 (December 2010): 133–37. http://dx.doi.org/10.4028/www.scientific.net/msf.667-669.133.
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The influence of severe plastic deformation (SPD) on distribution of effective stresses, effective strains and temperatures during equal channel angular rolling (ECAR) process is mathematically simulated. Effect of ECAR processing on substructural and mechanical properties of oxygen free high conductivity (OFHC) Cu material is investigated too. Mathematical simulations in software DEFORM-3D, ECAR technology, tensile tests, EBSD analysis were used as experimental methods. Mathematical simulations of first ECAR pass referred on following results: effective normal stress had low heterogeneity with value 385 MPa, effective strain was distinguished with high heterogeneity in cross section of sample (φ=1,5-3) and temperature in deformation zone achieved value 150 °C. Mechanical properties after cold drawing were: Rp0,2 = 217 MPa, Rm = 260 MPa, Z = 63 % and after sixth ECAR pass were: Rp0,2 = 412 MPa, Rm = 426 MPa, Z = 72 %. From experiments is resulting the stabilization of mechanical properties after fourth ECAR pass were obtained.
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Zeng, Zhi, Jia Quan Zhang, and Yuan Liu. "Surface Temperature Monitoring of Casting Strand Based on CCD Image." Advanced Materials Research 154-155 (October 2010): 235–38. http://dx.doi.org/10.4028/www.scientific.net/amr.154-155.235.
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Continuous casting process is used for the solidification of molten steel into semi-finished shapes. Due to lack of reliable sensors online, manual monitoring was often essential to cooling control, which was time consuming and inefficient. This paper proposes an approach to automatically monitor high-temperature casting strand based on radiation thermometry, with the help of CCD (charge coupled device) camera and digital image processing technology. The bicolorimetric temperature measurement method is introduced in detail, as well as the working principle of CCD. Programs developed by Visual C++ 6.0 complete the acquisition, processing, calculation and visualization of casting strand image data. Besides, some experiment of temperature test was carried out for bloom casting (section size of 260 mm×300 mm) in a domestic steel plant so as to verify the monitoring model. Consequently, the purpose for monitoring casting strand is achieved, which is beneficial to cooling control in the process of continuous casting.
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Colangelo, G., and A. Guariglia. "A Combined Methodology for Landslide Risk Mitigation in Basilicata Region by Using LIDAR Technique and Rockfall Simulation." International Journal of Geophysics 2011 (2011): 1–5. http://dx.doi.org/10.1155/2011/392676.
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Rockfalls represent a significant geohazards along the SS18 road of Basilicata Region, Italy. The management of these rockfall hazards and the mitigation of the risk require innovative approaches and technologies. This paper discusses a hazard assessment strategy and risk mitigation for rockfalls in a section of SS118, along the coast of Maratea, using LIDAR technique and spatial modelling. Historical rockfall records were used to calibrate the physical characteristics of the rockfall processes. The results of the simulations were used to define the intervention actions and engineering strategy for the mitigation of the phenomena. Within two months, 260 linear meters of high-energy rockfall barriers for impact energies up to 3000 kJ were installed. After that, according to road authority, the SS18 road was opened in a safe condition. The results represent a valid cognitive support to choose the most appropriate technical solution for topography strengthening and an example of good practice for the cooperation between innovative technologies and field emergency management.
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Shimanoe, Hiroki, Seunghyun Ko, Young-Pyo Jeon, Koji Nakabayashi, Jin Miyawaki, and Seong-Ho Yoon. "Shortening Stabilization Time Using Pressurized Air Flow in Manufacturing Mesophase Pitch-Based Carbon Fiber." Polymers 11, no. 12 (November 20, 2019): 1911. http://dx.doi.org/10.3390/polym11121911.
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Oxidation–stabilization using pressurized air flows of 0.5 and 1.0 MPa could successfully shorten the total stabilization time to less than 60 min for manufacturing mesophase pitch-based carbon fibers without deteriorating mechanical performance. Notably, the carbonized fiber heat-treated at 1000 °C for 30 min, which was oxidative–stabilized at 260 °C without soaking time with a heating rate of 2.0 °C/min using 100 mL/min of pressurized air flow of 0.5 MPa (total stabilization time: 55 min), showed excellent tensile strength and Young′s modulus of 3.4 and 177 GPa, respectively, which were higher than those of carbonized fiber oxidation–stabilized at 270 °C without soaking time with a heating rate of 0.5 °C/min using 100 mL/min of atmospheric air flow (total stabilization time: 300 min). Activation energies for oxidation reactions in stabilization using pressurized air flows were much lower than those of oxidation reactions using atmospheric air flow because of the higher oxidation diffusion from the outer surface into the center part of pitch fibers for the use of the pressurized air flows of 0.5 and 1.0 MPa than the atmospheric one. The higher oxygen diffusivities resulted in a more homogeneous distribution of oxygen weight uptake across the transverse section of mesophase pitch fibers, and allowed the improvement of the mechanical properties.
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Ergashev, Rustam, Azam Azimov, Вoybek Kholbutaev, and L. Mavlonov. "Influence of cavitation on pressure pulsation through impeller of large pumps." E3S Web of Conferences 264 (2021): 03004. http://dx.doi.org/10.1051/e3sconf/202126403004.
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The article provides the main recommendations for studying the processes of cavitation development on the models of pumping units OPV-10-260 and V 20-13/45 with an impeller diameter Dr = 250 mm. The nature of the effect of cavitation depends on forms of pressure pulsation. The purpose of this work is to study abrasive-cavitation erosion of large pumps. The research objectives are to develop a methodology for calculating their operating modes, taking into account the minimum deterioration of working parts. Strongly developed cavitation leads to disruption of regular pulsations and an increase in the swing of the high-frequency component. Investigations of operating mode of pumps with deterioration of elements of flow section were carried out, and the characteristics of materials for the manufacture of hydromechanical equipment for resistance to cavitation deterioration were refined. According to experiments, the influence of pressure on the pressure fluctuation range begins to significantly affect if the pump pressure is less than 5 m. The nature of the effect of cavitation depends on the forms of pressure pulsation. The complexity of composition, high cost of high-alloy steels, and non-ferrous alloys make it irrational to use them in massive parts operating under cavitation-abrasive conditions. It is recommended to use the developed dependencies on machine water elevating systems to reduce deterioration by improving the quality of impeller materials.
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Muhammad Abdul Quddoose, Azhar Hussain, Madeeha Malik, and Nabeel Siddique. "Assessment of Perception, Knowledge and Practice of Healthcare Professionals Regarding Pharmaceutical Advertisement (PA) in Pakistan." International Journal of Research in Pharmaceutical Sciences 12, no. 2 (May 3, 2021): 1360–66. http://dx.doi.org/10.26452/ijrps.v12i2.4690.
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Pharmaceutical advertising (PA) effects both healthcare professionals and consumers. Ethical and legal challenges of PA are often odious and unmet to the standards. This study was designed to assess perceptions, knowledge, and practices of healthcare professionals towards pharmaceutical advertisement in Pakistan. A survey-based descriptive cross-section study, of 764 sample records and analyzed by SPSS, version 21. A Chi-square test was performed (p ≤ 0.05) to find out differences among variables. We found 34.8% (n=266) physicians, 8.4% (n=64) dentists, 13.6% (n=104) hospital pharmacists, 15.7% (n=120) community pharmacists, 8.4% (n=64) regulatory pharmacists, 8.3% (n=63) marketing pharmacists and 10.9% (n=83) physicians and pharmacists from distributions and other relevant fields participated in this study. The result showed that 81.4 % (n=622) believed that medical advertisements should seek government approval, 71.3% (n=545) assumed that only registered drugs could be advertised. 34.0% (n=260) answered only prescription drug could be advertised. 7.2% (n=284) showed a negative response towards advertised drugs. 33.0% (n=252) answered that advertising encourages the patients to decide on their choice of a drug without the help of a healthcare professional, while 31.4%(n=240) of the respondents were agreed that advertising provided reliable information regarding a medicine. 36.4% (n=278) of respondents were agree that advertisements increased drugs cost. 32.7% (n=250 and 37.4% (n=286) answered that patients buy an advertised drug without referring a doctor. This study concluded that the awareness regarding PA was low among the healthcare professionals in Pakistan. Healthcare personals were in the favor of advertisement, regardless of little knowledge about the current advertisement rules in the country. Comparatively, Pharmacists have better knowledge of PA than physicians do.
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Garalevičius, Romualdas, Romualdas Kliukas, and Adolfas R. Garalevičius. "STRENGTH AND DEFORMABILITY ESTIMATION OF CENTRIFUGED CONCRETE/ОЦЕНКА ПРОЧНОСТО И ДЕФОРМАТИВНОСТИ ЦЕНТРИФУГИРОВАННОГО БЕТОНА." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 2, no. 8 (December 31, 1996): 73–83. http://dx.doi.org/10.3846/13921525.1996.10590175.
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Influence of several factors, namely high strength longitudinal reinforcement, transverse (spiral) reinforcement, precompression level and concrete age, on mechanical properties of centrifuged concrete is investigated. It has been established by tests that longitudinal and transverse (spiral) reinforcement make worse compaction, casting and hardening conditions of centrifuged concrete. But the spiral reinforcement reduces transverse deformations of compressed centrifuged members of ring cross-section and hence increases concrete strength. During the experiments for central compression, centrifuged concrete members of a ring cross-section were investigated. The parameters of these members: diameter 260 and 500 mm, height 400 and 800 mm, web thickness 35…80 mm. The specimens were reinforced by longitudinal bars of 10, 12, 14 mm diameter and 4 or 5 mm cross-section spirals. Coefficient of longitudinal reinforcement μ s , varied from 1,5 to 6%, coefficient of transverse reinforcement μ cir —from 0,25 to 1,25%, lead of spirals—from 40 to 100 mm. During testing the ring concrete compressive strength Rb was 30…60 MPa. The results of the above-mentioned experiments are presented in Tables 1, 2 and 3. It is recommended to evaluate the reinforcement influence on mechanical properties of such concrete in members of real constructions by formulas (5) and (6). Relationships of concrete strength, initial modulus of deformation and intensity of precompression (9) and (10) are discussed in this article. The latest test results on relationship between concrete compression, tension strength and concrete age are presented. It is established, that hydration of cement takes quite a long time and compression and tension strength of centrifuged concrete increases. This increase in strength is given in Table 4. The strength of centrifuged concrete of 14, 120, 240 and 360 days was determined by direct compression and tension of concrete rings (Table 4). After 9,600 days (26 years) due to a limited number of specimens (concrete rings) the compressive strength was determined by testing prisms cut from the rings. The tensile strength was determined indirectly—by cutting these prisms, as it is recommended by a standard [11] according to formula (12). The results of these tests are presented in Tables 5 and 6. Theoretical connection between tensile and compressive strength may be described by Ferret formula (13), which we propose to use in a slightly changed form, i. e. as (14). Comparative calculations showed that the centrifuged concrete strength calculated according formula (14) corresponds to the results of direct testing (Table 7).