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Статті в журналах з теми "306.430 94"
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Walbank, Michael B. "Notes on Attic Decrees." Annual of the British School at Athens 85 (November 1990): 435–47. http://dx.doi.org/10.1017/s0068245400015781.
Повний текст джерелаАнотація:
Several fragments of 4th-century BC Athenian decree-inscriptions are discussed. Joins are made betweenIGii2. 13a and 68 andHesperia, 40, no. 3;IGii2. 257 and 300; 242 and 373; 407 andSEG32. 94;IGii2. 309 and 552; 530 and 590. Attributed to the same stele, but not joining, areIGii2. 139 and 289; 277 and 428; 540a andSEG24. 117;IGii2. 540b andHesperia, 21, no. 17;IGii2. 286 and 625; 414a and 403; 398a (+ 438) and 612; 484 and 558; 489 and 532; 495 and 709; 405 andHesperia, 4, no. 32. Other decrees discussed, mainly in light of the work of A.S. Henry on the formulae of Athenian decrees, areIGii2. 44; 81; 121; 129; 147; 154; 155; 156; 285+ 414d; 321; 335; 364; 406; 416; 1001; andSEG21. 362 and 25. 85.
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Nose, Masako, Yoshiro Aoki, Yoshiko Kawase, Gen Suzuki, Makoto Akashi, and Atsuo Akanuma. "In vitro effects of OK-432 on irradiated mouse bone marrow cells." International Journal of Radiation Oncology*Biology*Physics 29, no. 3 (June 1994): 631–34. http://dx.doi.org/10.1016/0360-3016(94)90471-5.
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Saccocia, Peter J., and William E. Seyfried. "The solubility of chlorite solid solutions in 3.2 wt% NaCl fluids from 300–400°C, 500 bars." Geochimica et Cosmochimica Acta 58, no. 2 (January 1994): 567–85. http://dx.doi.org/10.1016/0016-7037(94)90489-8.
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Yousif, Hayder A., Abdul Rahim Norasmadi, Ahmad Faizal Bin Salleh, and Ammar Zakaria. "Evaluation of Lower Limb Muscles Fatigue and Force during Running 400-Meters Using Learning Machine." Journal of Biomimetics, Biomaterials and Biomedical Engineering 43 (November 2019): 39–53. http://dx.doi.org/10.4028/www.scientific.net/jbbbe.43.39.
Повний текст джерелаАнотація:
The main goal of this research work is to study and evaluate the muscles force and fatigue of Gastrocnemius Medialis (GMS), Gluteus Maximus (GM), and Gastrocnemius Lateralis (GL) during running for 400-meters based on surface Electromyography (sEMG) signals. The sEMG signals of the selected muscles from the right leg have been collected by using bipolar electrodes from 15 subjects during the run on the tartan athletic track with two pacing strategies. The first strategy: 1st 200-meters running 87% - 94% of full speed and last 200-meters sprinting (full speed). The second strategy: 1st 300-meters running 87% - 94% of sprinting and last 100-meters sprinting. The rate of fatigue has been calculated by using Root Mean Square (RMS) and Median Frequency (MDF) features. Then, the slopes of linear regression were calculated from both RMS and MDF at each 100-meters. The linear slope values represented the rate of fatigue and force. From the results of 1st and 2nd running strategies, the force of GM and GL muscles increased during the 4th 100-meters of the 1st strategy and decreased with GM and GMS muscles during the 4th 100-meters of the 2nd strategy. The less index fatigues were during the 1st strategy for most selected muscles. Finally, it can be concluded the running with the 1st strategy get less fatigues and the force of most selected muscles increased compared with the 2nd strategy based on the results of time and frequency domain features (RMS and MDF).
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Negreiros, Fauston, Ellery Henrique Barros da Silva, and Jennifer Alves Lima. "ESTILOS DE APRENDIZAGEM NO ENSINO SUPERIOR: um estudo com universitários ribeirinhos do Piauí." Revista Educação e Emancipação 9, no. 3 (May 10, 2017): 277. http://dx.doi.org/10.18764/2358-4319.v9n3p277-302.
Повний текст джерелаАнотація:
Este artigo resulta de estudos acerca dos estilos de aprendizagem de estudantes do ensino superior do estado do Piauí, residentes em comunidades ribeirinhas. Desse modo, a metodologia utilizada foi a quanto-qualitativa e quanto aos seus objetivos de pesquisa é lassificada como exploratório-descritiva. Essa pesquisa teve a participação de 400 estudantes, sendo 105 do curso de Administração; 91 de Biologia; 94 de Enfermagem; 110 de Pedagogia. O instrumento de coleta de dados foi o questionário Preferências Perceptuais em Estilos de Aprendizagem Joy Reid. O material coletado foi analisado estatisticamente pelo programa GraphPadPrism. Seguidamente os dados foram tratados e confrontados com a técnica da Hermenêutica de Profundidade, seguindo suas três etapas: a análise sócio-histórica; a análise formal ou discursiva; a (re) interpretação. Os resultados obtidos podem contribuir para o melhor desenvolvimento dos discentes, com novas propostas metodológicas baseadas no estilo de aprendizado preferencial de cada curso, considerando as singularidades da formação e do mercado de trabalho. Palavras-chave: Estilos de aprendizagem. Aprendizagem. Ensino superior.LEARNING STYLES IN HIGHER EDUCATION: a study of Piauí bordering universityABSTRACTThis article is the result of studies on students’ learning styles of Piauí state of higher education, residents of riverside communities. Thus, the methodology used was quantitative qualitative and about their research objectives is classified as exploratory and descriptive. This survey was attended by 400 students, with 105 Administration course students; 91 Biology course; 94 of the nursing course; 110 from the Faculty of Education. The data collection instrument was a questionnaire Perceptual Preferences Joy Reid Learning Styles. The collected material was analyzed statistically by GraphPadPrism program. Then the data were analyzed and compared with the Depth Hermeneutics technique, following its three stages: a socio-historical analysis; the formal analysis or discursive; and (re)interpretation. The results may contribute to the better development of students, with new methodological proposals based on preferred learning style of each course, considering the peculiarities of training and the labor market.Keywords: Learning styles. Learning. Higher education.ESTILOS DE APRENDIZAJE EN LA EDUCACIÓN SUPERIOR: un estudio de la universidad de Piauí bordeandoRESUMENEste artículo es el resultado de los estudios sobre los estilos de aprendizaje de los estudiantes de estado de Piauí de la educación superior, los residentes de las comunidades de ribera. Por lo tanto, la metodología utilizada fue cuanti-cualitativa y sobre sus objetivos de investigación se clasifica como exploratorio y descriptivo. Esta encuesta contó con la participación de 400 alumnos, con 105 estudiantes del curso de Administración; 91 del curso de Biología; 94 del curso de enfermería; 110 de la Facultad de Educación. El instrumento de recolección de datos fue un cuestionario de percepción Preferencias Estilos de Aprendizaje alegría Reid. El material recogido se analizó estadísticamente por el programa GraphPadPrism. A continuación, se analizaron y se compararon con la técnica profundidad hermenéutica, después de tres turbinas de los datos: un análisis socio-histórico; el análisis formal o discursivo; y (re) interpretación. Los resultados pueden contribuir a un mejor desarrollo de los estudiantes, con nuevas propuestas metodológicas basadas en el estilo preferido de aprendizaje de cada curso, teniendo en cuenta las peculiaridades de la formación y el mercado laboral. Palabras clave: Estilos de Aprendizaje. El aprendizaje. Enseñanza superior.
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Prabowo, Heri, and I. G. A. A. Indrayani. "Keefektifan Nematoda Patogen Serangga Steinernema sp. Terhadap Achaea janata L., Serangga Pemakan Daun Jarak Kepyar (Ricinus communis)." Buletin Tanaman Tembakau, Serat & Minyak Industri 5, no. 2 (October 10, 2016): 58. http://dx.doi.org/10.21082/bultas.v5n2.2013.58-68.
Повний текст джерелаАнотація:
<p>Penggunaan pestisida kimia yang cukup tinggi pada akhir-akhir ini telah menimbulkan dampak negatif ter-hadap lingkungan, sehingga pengendalian hama yang ramah lingkungan sangat diperlukan. Saat ini, peng-gunaan nematoda entomopatogen terutama Steinernema sp., membuka peluang untuk digunakan sebagai pengendalian Achaea janata. Tujuan dari penelitian ini untuk mengetahui keefektifan Steinernema sp. ter-hadap A. Janata , dilaksanakan di laboratorium patologi serangga Balai Penelitan Tanaman Pemanis dan Serat pada bulan Maret sampai dengan Agustus 2011. Penelitian menggunakan rancanagan acak lengkap (RAL) dengan empat ulangan. Setiap ulangan menggunakan 25 larva A. janata instar 2. Larva diekspose de-ngan berbagai variasi konsentrasi Steinernema sp. dan kematian larva diamati setiap hari sampai 120 jam setelah infeksi. Konsentrasi Steinernema sp. yang digunakan adalah 0, 50, 100, 200, 300, dan 400 JI/larva. Hasil penelitian pemberian Steinernema sp. pada konsentrasi 200, 300, dan 400 JI/larva cukup efektif untuk membunuh A. janata dengan persentase berkisar antara 80–94% mulai 48–120 jam setelah perlakuan. Se-makin tinggi konsentrasi nematoda, semakin tinggi mortalitas A. janata. Steinernema sp. dengan konsen-trasi 400 JI/larva paling efektif membunuh larva, menurunkan bobot larva, bobot pupa, jumlah telur yang dihasilkan, dan fertilitas telur.</p><p> </p><p>High intensity of chemical pesticide application has become a serious concern of environmentalists in recent years, because of various negative impacts of it. Therefore, environmentally friendly techniques of controlling insect pest are needed. Recently, the use of entomopathogenic nematodes, especially Steinernema sp., has created new possibilities of promising control techniques against insect pests. The aim of this study was to evaluate the effectiveness of Steinernema sp. to A. janata larvae in laboratory. This research was conducted at the Laboratory of Insect Pathology Laboratory of Indonesian Sweetener and Fiber Crops Research Insti-tute from March to August 2011. Tests used the 2nd stage larvae of Achaea janata, the leaf eater of castor (Ricinus communis). Treatment arranged in a completely randomized design (CRD) with 4 replicates. For each test used 25 larvae which were exposed to various concentrations of Steinernema sp. Concentration of Steinernema sp. used was 0, 50, 100, 200, 300, and 400 infective juvenile/larvae. Daily mortality A. janata larvae, larval and pupal weight, the number of eggs laid, and number of hatch eggs were recorded. Steinernema sp. on concentration of 200; 300; and 400 IJ/larvae was effective to cause mortality of A. janata larvae (80–94% mortality after 48–120 hours). The higher the concentration of the nematode the higher larval mortality. Steinernema sp. with concentration of 400 IJ/ larvae was effective decreasing larval and pupal weight, the number of eggs laid, and fertility of the eggs produced.</p>
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RUSMIN, DEVI, FAIZA C. SUWARNO, and IRENG DARWATI. "PENGARUH PEMBERIAN GA 3 PADA BERBAGAI KONSENTRASI DAN LAMA IMBIBISI TERHADAP PENINGKATAN VIABILITAS BENIH PURWOCENG (Pimpinella pruatjan Molk.)." Jurnal Penelitian Tanaman Industri 17, no. 3 (June 19, 2020): 89. http://dx.doi.org/10.21082/jlittri.v17n3.2011.89-94.
Повний текст джерелаАнотація:
<p>ABSTRAK</p><p>Purwoceng (Pimpinella pruatjan Molk.) merupakan tanaman herbatahunan dari famili Apiaceae, yang hidup secara endemik pada habitatdengan ketinggian 1.800 - 3.000 m dari muka laut, dan pada saat initergolong tanaman langka. Salah satu permasalahan dalam pengembangantanaman ini adalah viabilitas benih saat masak fisiologis rendah (<25%).Berdasarkan hal tersebut telah dilakukan percobaan yang bertujuan untukmengetahui tingkat konsentrasi GA 3 dan lama imbibisi yang tepat untukmeningkatkan viabilitas potensial dan vigor benih purwoceng. Percobaandilaksanakan di Laboratorium Ekofisiologi, Balai Penelitian TanamanObat dan Aromatik, Bogor mulai bulan November sampai denganDesember 2009. Rancangan percobaan yang digunakan adalah rancanganacak lengkap (RAL), dengan 2 faktor dan tiga ulangan. Faktor pertamaadalah enam taraf pemberian GA 3 , yaitu: 0, 100, 200, 300, 400, dan 500ppm. Faktor kedua yang diuji dua taraf lama imbibisi benih yaitu: 24 dan48 jam. Hasil penelitian menunjukkan bahwa, pemberian GA 3 400 ppmdengan lama imbibisi 48 jam dapat meningkatkan daya berkecambah,potensi tumbuh maksimum, indeks vigor, dan kecepatan perkecambahanbenih purwoceng menjadi 1,5 - 2 kali dibandingkan tanpa pemberian GA 3.</p><p>Kata kunci: Pimpinella pruatjan, benih, GA 3 , imbibisi, konsentrasi</p><p>ABSTRACT</p><p>Effect of GA 3 Concentration and Imbibition Period onSeed Viability of Pruatjan</p><p>Pimpinella pruatjan Molk. is an annual herbaceous plant andbelongs to the family of the Apiaceae. It lives in endemic with an altitudeof 1,800-3,000 m above sea level and has been currently classified as rareplant. One of the problems in the development of this crop is low in seedviability (<25%) when it is physiologically mature. Based on the problem,an experiment was conducted aiming to find out the level of GA 3concentration and imbibition period to increase seed viability and vigourof P. pruatjan. The experiment was conducted at Gunung PutriExperimental Station and Plant Physiology Laboratory of the IndonesianMedicinal and Aromatic Crops Research Institute (IMACRI), fromNovember to December 2009. The experiment was arranged usingcompletely randomized design (CRD), with 2 factors and three replicates.The first factor was level of GA 3 concentration : 0, 100, 200, 300, 400, and500 ppm. The second factor was seed imbibition period : 24 and 48 hours.Results of the experiment showed that: GA 3 400 ppm with imbibitionperiod of 48 hours improved seed germination, maximum growthpotential, vigor index, and rate of germination of purwoceng seed to 1.5- 2 times compared to without GA 3 treatment.</p><p>Key words: Pimpinella pruatjan, seed , GA 3 , imbibition, concentration</p>
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Canaday, C. H., and A. F. Schmitthenner. "Effects of Chloride and Ammonium Salts on the Incidence of Phytophthora Root and Stem Rot of Soybean." Plant Disease 94, no. 6 (June 2010): 758–65. http://dx.doi.org/10.1094/pdis-94-6-0758.
Повний текст джерелаАнотація:
In growth chamber experiments using field soil naturally infested with Phytophthora sojae, addition of KCl at 150 to 400 μg of K per gram of dry soil increased the incidence of Phytophthora root and stem rot on susceptible soybean (Glycine max) compared with a distilled water control. Other potassium salts at 150 to 400 μg of K, phosphorus salts at 20 to 317 μg of P, and sulfate salts of K, Ca, Mg, Na, and Al at 491 μg of SO4 per gram of soil did not affect disease incidence. Application of chloride salts of K, Na, Mg, Ca, NH4, Al, Fe, and Sr at 250 μg of Cl per gram of soil all increased disease incidence compared with the distilled water control. Addition of other ammonium salts also increased disease incidence. Disease incidence increased when KCl at 300 μg of K per gram soil was applied to naturally infested Blount silt loam but not to naturally infested Hoytville silty clay. The effects of chloride salts on plant growth and on natural inoculum of P. sojae were investigated. At 450 μg Cl/g of soil, addition of NaCl increased plant fresh weight but had no effect on germination, emergence, transpiration, height, and dry weight of plants grown in pasteurized, pathogen-free soil. When soybean plants were grown without a deplasmolytic shock and without promoting zoospore release by saturating the soil, the addition of chloride salts at 304 μg of Cl per gram of soil increased disease. In a leaf-disc-baiting bioassay, leaf infection by P. sojae zoospores decreased when 0.01 or 0.02 M KCl was added to soil extracts from flooded soil but was unaffected by KCl at 150 to 600 μg of K per gram of soil applied to the soil 5 days before baiting. Energy-dispersive X-ray analysis of taproots of 5-day-old soybean plants indicated a reduction in the calcium content of the outer cell layers with KCl at 400 μg of K per gram of soil but not with K2SO4. Disease increases with addition of KCl appear to be due to the presence of chloride and may be associated with changes in the micropartitioning of root calcium.
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Hirsch, Fred R., Marileila Varella-Garcia, Paul A. Bunn, Michael V. Di Maria, Robert Veve, Roy M. Bremnes, Anna E. Barón, Chan Zeng, and Wilbur A. Franklin. "Epidermal Growth Factor Receptor in Non–Small-Cell Lung Carcinomas: Correlation Between Gene Copy Number and Protein Expression and Impact on Prognosis." Journal of Clinical Oncology 21, no. 20 (October 15, 2003): 3798–807. http://dx.doi.org/10.1200/jco.2003.11.069.
Повний текст джерелаАнотація:
Purpose: The epidermal growth factor receptor (EGFR) is frequently overexpressed in non–small-cell lung carcinoma (NSCLC), and EGFR inhibitors are promising new therapeutic agents. The molecular mechanisms responsible for EGFR overexpression are poorly understood. Materials and Methods: Gene copy number and protein status of EGFR were investigated in microarrayed tumors from 183 NSCLC patients, including squamous cell carcinoma (SCC; 89 patients) and non-SCC (94 patients) histologies. Protein expression was assessed by immunohistochemistry on a scale from 0 to 400 (percentage of positive cells × staining intensity). Gene and chromosome 7 copy numbers were identified by fluorescent in situ hybridization (FISH). Results: EGFR protein overexpression was observed in 62% of the NSCLC (25% scored 201 to 300; 37% scored 301 to 400), more frequently in SCC than non-SCC (82% v 44%; P < .001), and in 80% of the bronchioloalveolar carcinomas. The prevalent FISH patterns were balanced disomy (40%) and trisomy (38%) for EGFR gene and chromosome 7 (40%), whereas balanced polysomy was seen in 13% and gene amplification was seen in 9% of the patients. Gene copy number correlated with protein expression (r = 0.4; P < .001). EGFR overexpression or high gene copy numbers had no significant influence on prognosis. Conclusion: EGFR overexpression is frequent in NSCLC, is most prominent in SCC, and correlates with increased gene copy number per cell. High gene copy numbers per cell showed a trend toward poor prognosis. It will be important to evaluate EGFR gene and EGFR protein status and signal protein expression to properly interpret future clinical trials using EGFR inhibitors.
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Delele, Tadesse Guadu, Gashaw Andargie Biks, Solomon Mekonnen Abebe, and Zemene Tigabu Kebede. "Prevalence of common symptoms of neonatal illness in Northwest Ethiopia: A repeated measure cross-sectional study." PLOS ONE 16, no. 3 (March 30, 2021): e0248678. http://dx.doi.org/10.1371/journal.pone.0248678.
Повний текст джерелаАнотація:
Background The neonatal period is the most vulnerable stage of life. In Ethiopia, neonatal illness is common and the reduction in neonatal mortality is not as significant as for under-five mortality. Objectives To determine the prevalence and factors associated with neonatal illness symptoms reported by mothers delivering in health facilities in Northwest Ethiopia. Methods A repeated measure cross-sectional study design was employed to collect data from 358 randomly selected deliveries in 11 health facilities from November 2018 to March 2019. A pretested and interviewer-administered structured questionnaire adapted from the literature was employed to record neonatal outcomes (illnesses and/or deaths) at birth, 24 hours, 7th, 14th and 28th day from birth. Cleaned data was exported to STATA version 14 software for analysis. Multilevel analysis was used to identify individual and facility-level characteristics associated with neonatal illness symptoms. Results The prevalence of neonatal illness symptoms was 27.8% (95% CI; 23.2, 32.8) of the 338 babies born alive and the neonatal mortality rate was 41/1000 live births (14/338). The most common symptoms or conditions of neonatal illness reported by mothers’ in the study area were possible serious bacterial infections (95.8%, 90/94), localized bacterial infections (43.6%, 41/94), low birth weight (23.4%, 22/94), diarrhea (18.1%, 17/94), prematurity (14.9%, 14/94), and jaundice (7.5%, 7/94). Among the babies who died, neonates who had possible serious bacterial infections, low birth weight, localized bacterial infections, and prematurity took the highest proportions with 100% (14/14), 64.3% (9/14), 50% (7/14), and 42.9% (6/14), respectively. Having a maximum of 3 children (AOR = 1.96; 95% CI = 1.1–3.6), having twins or triplets during pregnancy (AOR = 2.43; 95% CI = 1.1–6.1), and lack of antenatal counseling (AOR = 1.83; 95% CI = 1.1–3.3) were among the maternal factors associated with neonatal illness. Having low birth length (AOR = 7.93; 95% CI = 3.6–17.3), and having a poor breastfeeding quality (AOR = 2.37; 95% CI = 1.4–4.0) were found to be the neonatal factors associated with neonatal illness. Conclusions This study indicated a high prevalence of neonatal illness symptoms in Northwest Ethiopia. Therefore, early detection, referral and better management of symptoms or conditions with a high mortality, like sepsis and low birth weight are compulsory to save the lives of many neonates. Strengthening the health extension programme to improve antenatal care service utilization and breastfeeding quality of neonates among postpartum women is crucial.
Дисертації з теми "306.430 94"
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Hasanagas, Nikolaos. "Power factor typology through organizational and network analysis : using environmental policy networks as an illustration /." Doctoral thesis, Stuttgart : ibidem-Verl, 2004. http://webdoc.sub.gwdg.de/diss/2004/abstracts/hasanagas_abs_de.pdf.
Повний текст джерелаЧастини книг з теми "306.430 94"
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Wijaya, Ridho Gata, Yudanto Yudanto, and Sujarwo Sujarwo. "The Relationship between Social Intelligence and Emotional Intelligence on Children’s Motor Development in the 4.0 Era." In Advances in Health Sciences Research, 110–17. Dordrecht: Atlantis Press International BV, 2023. http://dx.doi.org/10.2991/978-94-6463-356-6_14.
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La Rosa, Giovanni, Gaetano Agnetta, Benedetto Biondo, Osvaldo Catalano, Filippo Celi, Renato Di Raffaele, Salvatore Giarrusso, et al. "Atmospheric Background Measurement in the 300–400 nm Band with a Balloon Borne Experiment during a Nocturnal Flight." In Science with Minisat 01, 219–26. Dordrecht: Springer Netherlands, 2001. http://dx.doi.org/10.1007/978-94-010-0686-6_22.
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Rusdiyanto, Johny. "The Effect of a Toxic Work Environment on Employee Engagement in the Digital Era and Society 5.0." In Proceedings of the 19th International Symposium on Management (INSYMA 2022), 550–54. Dordrecht: Atlantis Press International BV, 2022. http://dx.doi.org/10.2991/978-94-6463-008-4_69.
Повний текст джерелаАнотація:
AbstractPeople’s lives have undergone a radical transformation as a result of the Industrial Revolution 4.0, and this concept is known as Society 5.0. The concept refers to a revolution in society that incorporates human and humanities aspects into its use of technology. Digitalization in some sectors has begun, utilizing big data, robotics, artificial intelligence, automation and machine learning, among other technologies. Toxic working conditions are those in which people are treated cruelly and violently, and this puts their health and safety at risk. Toxic work environments are more likely to develop in organizations that rely on technology more heavily. Small and medium-sized businesses (SMEs) are increasingly relying on work engagement, that also defines the level of commitment shown by employees to their work and organization. Toxic work environments (TWEs) have been shown to have an impact on employee engagement (EE). Data were collected from 301 employees of a socioeconomic firm in Surabaya, Indonesia, using a quantitative research approach. We used structural equation modeling with partial least squares to approximate the possible relationships in the research model.
Тези доповідей конференцій з теми "306.430 94"
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Ueda, Kawachi, Hashimoto, Ikata, and Satoh. "Low loss ladder type SAW filter in the range of 300 to 400 MHz." In Proceedings of IEEE Ultrasonics Symposium ULTSYM-94. IEEE, 1994. http://dx.doi.org/10.1109/ultsym.1994.401568.
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Watanabe, Makoto, and Hiroshi Ogita. "Evaluation of Ceramic Rotor Strength by Cold and Hot Spin Tests." In ASME 1994 International Gas Turbine and Aeroengine Congress and Exposition. American Society of Mechanical Engineers, 1994. http://dx.doi.org/10.1115/94-gt-460.
Повний текст джерелаАнотація:
Presently in Japan 100 kW ceramic gas turbines (CGT) for automobiles are under development, parts of which include a turbine rotor, scrolls, a combustor, and other parts made of ceramics and ceramic matrix composites. The rotor is designed to rotate at 110,000 rpm, equal to the maximum stress of 300 MPa and to be exposed to temperatures up to 1350°C. Initially, the strength of ceramic rotors was evaluated by a burst test using a cold spin tester. The burst picture was observed and compared with the 4pt bending strength of the ceramic test specimens. Next, the strength of the rotors was tested by a hot spin test and the burst result of the rotor was evaluated. A high speed camera was used to observe the rotor at the instant of burst under a high temperature condition. Applying the result of the cold and hot spin tests, ceramics for turbine rotor were selected and the shape of the rotor was designed as a practical automotive engine began in 1990 as a project of the Petroleum Energy Center with financial support from the Agency of Natural Resources and Energy, the Ministry of International Trade and Industry. In order to obtain a 40% or higher thermal efficiency, the automotive gas turbine requires the use of a turbine rotor, combustor, shroud and other engine parts that can withstand high temperatures of 1200°C to 1500°C. In addition, since their resistance to thermal stress and impact are primary considerations, it is necessary to develop high heat-resistant materials (ceramic type materials). Fig. 1 shows a sectional model of the automotive ceramic gas turbine now under development. Under this project, a monolithic ceramic rotor was first evaluated as a turbine rotor. Ceramic matrix composites were then studied.
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Neththasinghe, N. A. S. A., E. D. C. T. Chandrasekara, E. M. S. Ekanayake, N. D. R. Madushan, W. M. U. K. Rathnayake, D. N. Sirisena, and L. D. B. Suriyagoda. "Nitrogen, Phosphorus and Potassium Concentrations in the Grains of Selected Rice Varieties in Sri Lanka." In The SLIIT International Conference on Engineering and Technology 2022. Faculty of Engineering, SLIIT, 2022. http://dx.doi.org/10.54389/xjet2641.
Повний текст джерелаАнотація:
Rice (Oryza sativa L.) is the staple food for Sri Lankans, and it serves as a key source of essential mineral elements. The variation of grain nutrient concentrations as affected by genetic factors (variety, grain color and age group) are not known, and those were tested in the current study. Total of 200 rice grain samples were collected using a stratified random sampling approach, representing all agro-climatic zones in Sri Lanka. Grain nitrogen (N), phosphorus (P) and potassium (K) concentrations were measured using Kjeldahl, Colorimetric, and General methods, respectively. Grain N P and K concentrations were significantly different among rice varieties (P<0.1). Grain N concentration varied between 4-19 mg g−1 . The highest grain N concentration was recorded in Bg 307 (14 mg g−1 ) while the lowest (i.e., < 10 mg g−1 ) in Bg 367, Bg 374, Bg 358, Bg 310 and Bg 379-2. Grain P concentration varied in the range 0.6- 1.7 mg g−1 . Grain P concentration in At 406 was the highest (1.6 mg g-1), followed by Bg 307, Bg 94-1, Bg 367 i.e., >1.3 mg g-1 and the lowest in Bg 403, Ld 365 and Bg 310 i.e., < 1 mg g−1 . Bg 357, Ld 365, Bg 406, Ld 368 and Bg 310 rice varieties showed significantly lower P concentration than other varieties (P<0.1) Grain N, P and K concentrations were similar among different age classes of rice varieties (P>0.05). Moreover, grain N and P concentrations between the red and white grain varieties were similar (P>0.05). However, varieties with white color grains had higher K concentration than in red rice varieties. There was a significant correlation between grain P and K concentrations (r =0.496, P<0.001). This information would be useful when selecting rice varieties with high and low nutritional qualities and implementing sustainable nutrient management practices in rice-based cropping systems in Sri Lanka. KEYWORDS: Age class, Nitrogen, Phosphorus, Potassium, Rice
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Fuentes, O., and G. Pincon. "PARIETAL AND MOBILE ART OF ROC-AUX-SORCIERS ROCK SHELTER (MIDDLE MAGDALENIAN, VIENNE, FRANCE)." In Знаки и образы в искусстве каменного века. Международная конференция. Тезисы докладов [Электронный ресурс]. Crossref, 2019. http://dx.doi.org/10.25681/iaras.2019.978-5-94375-308-4.15-16.
Повний текст джерелаАнотація:
The rock shelter of the Roc-aux-Sorciers at Angles-sur-lAnglin (Vienne, France) is one of the archaeological reference sites for the Upper Paleolithic. The sculpted, painted and engraved frieze was gradually brought to light in its archaeological context by Susanne Cassou de Saint-Mathurin and Dorothy Garrod from 1949 onwards (Saint-Mathurin, Garrod, 1950). A wealth of archaeological material was discovered alongside the parietal art, comprising numerous works of portable art, tools made of animal bone, jewellery, etc. It was very rapidly observed that the portable art and the parietal art shared the same graphic and thematic conventions. For example, images of female bodies are rendered in high relief, in a monumental way, but also in the form of small statuettes. Our research has demonstrated the undeniable intra-site links between the portable art and the parietal art (Pinon, 2012). Here we propose to broaden this analysis within a well-identified culture of the Middle Magdalenian known as the Magdalenian of Lussac-Angles spearpoints. At the time of the discovery of the Magdalenian site of La Marche in 1937 (Vienne) (Lwoff, Pricard, 1940), some similarities had been identified between this site and that of Le Roc-aux-Sorciers, where the discoveries dated back to 1927 (Rousseau, 1933). These similarities are also perceptible in shared techniques (Chehmana, Beyries, 2010), as well as in the production of objects in hard organic materials such as the Lussac-Angles spearpoints (Pinon, 1988), the jewellery in fossil mammoth ivory (Dujardin, Pinon, 2000), the engraved horse incisors (Mazire, 2009) and the figurative art (Bourdier et al., 2016 Fuentes, 2016). We propose to further explore the links between these two sites through the analysis of the dynamic processes of reworking images. In particular we examine the engraved plaquettes of La Marche and the parietal art of Le Roc-aux-Sorciers to bring these links into perspective. This could shed light on some common ways of seeing the world in this Magdalenian group. Bourdier, C., Pinon, G., Bosselin, B. (2016). Norme et individualit au Rocaux-Sorciers (Vienne, France): approches des mains du registre animalier au travers de la forme. In M. Groenen, M.-Ch. Groenen (Eds.), Style, Techniques and Graphic expression in Rock Art (pp. 1735). BAR S2787. Chehmana, L., Beyries, S. (2010). Lindustrie lithique du Roc-aux-Sorciers (collection Rousseau). In J. Buisson-Catil, J. Primault (Eds.), Prhistoire entre Электронная библиотека ИА РАН: https://www.archaeolog.ru/ru/el-bib 16 Vienne et Charente. Hommes et socit du Palolithique (pp. 453460). Association des publications Chauvinoises, mmoire XXXVIII. Dujardin, V., Pinon, G. (2000). Le Magdalnien dans la Vienne et la Charente. In G. Pion (Dir.), Le Palolithique suprieur rcent: nouvelles donnes sur le peuplement et lenvironnement (pp. 213222). Actes de la table ronde de Chambry, 12-13 mars 1999, Mmoire de la Socit prhistorique franaise 28. Fuentes, O. (2016). The social dimension of human depiction in Magdalenian rock art (16,500 cal. BP 12.000 Cal. BP): the case of the Roc-aux-Sorciers rockshelter. Quaternary International, 430, 97113. https://doi.org/10.1016/ j.quaint.2016.06.023 Pericard, L., Lwoff, S. (1940). La Marche. Commune de Lussac-les-Chteaux (Vienne). Premier atelier de Magdalnien III dalles graves mobiles. Bulletin de la Socit Prhistorique franaise, 37(79), 155180. Pinon, G. (1988). Fiche sagaie de Lussac-Angles. In H. Camps Fabrer (Dir.), Fiches typologiques de lindustrie osseuse prhistorique. Commission de nomenclature sur lindustrie de los prhistorique. Cahier I: sagaies (fiche 3bis). Universit de Provence. Pinon, G. (2012). Art mobilier et art parital du Roc-aux-Sorciers (Angles-surlAnglin, Vienne, France): disparits ou sens communs In J. Clottes (Ed.), Lart plistocne dans le monde / Pleistocene art of the world / Arte pleistoceno en el mundo (pp. 15491558). Bulletin Socit Prhistorique Arige-Pyrnes. Mazire, G. (2009). Les incisives de chevaux graves. In G. Pinon (Dir.), Le Roc-aux-Sorciers: art et parure du Magdalnien. Runion des Muses Nationaux. http://www.catalogue-roc-aux-sorciers.fr Rousseau, L. (1933). Le Magdalnien dans la Vienne. Dcouverte et fouille dun gisement du Magdalnien, Angles-sur-lAnglin (Vienne). Bulletin de la Socit Prhistorique franaise, 30, 239256. Saint-Mathurin (de), S., Garrod, D. (1950). Une frise sculpte du Magdalnien ancien dcouverte Angles-sur-lAnglin, dans la Vienne. Acadmie des Inscriptions et Belles Lettres, 94(2), 123128.
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Антонова, К. В., О. В. Лагода, А. А. Шабалина, Н. Е. Спрышков та М. М. Танашян. "ПЛОЩАДЬ ВИСЦЕРАЛЬНОЙ ЖИРОВОЙ ТКАНИ И СОСТОЯНИЕ СИСТЕМЫ ГЕМОСТАЗА У БОЛЬНЫХ ЦЕРЕБРОВАСКУЛЯРНЫМИ ЗАБОЛЕВАНИЯМИ". У X (XXIX) НАЦИОНАЛЬНЫЙ КОНГРЕСС ЭНДОКРИНОЛОГОВ с международным участием «Персонализированная медицина и практическое здравоохранение». ФГБУ «НМИЦ эндокринологии» Минздрава России, 2023. http://dx.doi.org/10.14341/cong23-26.05.23-143.
Повний текст джерелаАнотація:
Ожирение традиционно рассматривается в качестве фактора риска инсульта. Однако, не столько повы-
шение индекса массы тела, сколько абдоминальное перераспределение жира может приводить к повы-
шению риска развития и прогрессирования цереброваскулярных заболеваний (ЦВЗ). Вклад висцерального
ожирения в протромботические изменения крови у больных ЦВЗ малоизучен.
ЦЕЛЬ: анализ взаимосвязи состава тела по данным биоимпендансного исследования и изменений
системы гемостаза у пациентов с ЦВЗ.
МАТЕРИАЛЫ И МЕТОДЫ: обследовано 82 человека. Основная группа (I) - 39 пациентов с хроническими
ЦВЗ, возраст 64 (60–68) лет, 18 (46,2%) мужчин, контрольная группа (II) - 43 добровольца без ЦВЗ в возрасте
63 (58–67) лет, 19 (44,2%) мужчин. Было проведено комплексное клиническое обследование, исследование
состава тела на биоимпедансном анализаторе (InBody770-BIA-Южная Корея), а также определение лабо-
раторных показателей: гликемический профиль: гликированный гемоглобин (HbA1С), уровень глюкозы
натощак; первичный гемостаз: АДФ и индуцированная адреналином агрегация тромбоцитов (АДФ-PA);
система свертывания крови (фибриноген, D-димер, факторы свертывания V, VII, VIII, XII); система антико-
агуляции крови: протеин C (PC), S (PS) и антитромбин III (AT III); фибринолиз и функции эндотелия: ткане-
вой активатор плазминогена (t-PA), ингибитор тканевого активатора плазминогена (PAI-1), соотношение
t-PA/PAI-1 и фактор Виллебранда (vWF).
РЕЗУЛЬТАТЫ: при оценке антропометрических данных не получено статистически значимых различий
по ИМТ между больными ЦВЗ и лицами группы контроля, однако окружность талии, а также отношение
окружности талии к окружности бедер было статистически значимо больше у больных ЦВЗ (106,7 ± 18,0 см
vs 98,2 ± 13,3, p=0,017 и 1,02 ± 0,10 vs0,95 ± 0,08, р<0,01), что сопровождалось большей площадью висце-
рального жира (163,4 ± 63,5 см vs136,34 ± 53,4 cм, р=0,039). При оценке показателей гемостаза получены
статистически значимо более высокие значения фибриногена (4,0 ± 0,5 г/л vs 3,6 ± 0,6 г/л, р=0,016), vWF
(%) (133,3 ± 61,0 vs 110,2 ± 38,8, p=0,0421), VIII фактора свертывания (%) (133 (100 – 159) vs 94 (80 – 123),
p=0,001), и сниженные значения AT III (%) (77 (69 – 92) vs 100 (92 – 105), p< 0,001) и тканевого активатора
плазминогена (нг/мл) (1,9 (1,4 – 2,7) и 3,5 (2,3–3,8), р< 0,001) в группе больных ЦВЗ против группы контроля.
Выявлены статистически значимые корреляционные зависимости от площади висцерального жира
таких параметров, как HbA1c (r=0,33), фибриноген (r=0,83), vWF (r=0,250), VIII фактор свертывания (r=0,321),
АДФ-РА (r=0,780) и выявлена обратная корреляционная взаимосвязь с уровнем t-PA (r=-0,370) и соотноше-
нием тканевого t-PA/PAI-1 (r=-0,299).
ВЫВОДЫ: у пациентов с ЦВЗ отмечается перераспределение жировой массы с развитием абдоми-
нального ожирения, что сопровождается протромбогенными изменениями крови. Увеличение площади
висцерального жира оказывает негативное влияние на состояние системы гемостаза.
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El-Kady, Ahmed Hamdy, Zheng Chai, and Hisham A. Nasr-El-Din. "Comparative Analysis of Aminopolycarboxylate Chelants Improves Iron Control in Acidizing Operations." In SPE International Conference on Oilfield Chemistry. SPE, 2021. http://dx.doi.org/10.2118/204322-ms.
Повний текст джерелаАнотація:
Abstract Aminopolycarboxylate-based chelants are used to control iron precipitation during acidizing operations by interacting directly with the iron, resulting in water-soluble complexes. This paper highlights that, in order to improve the effectiveness of iron control during acidizing operations, the type and the concentration of the chelants should be based on the formation properties and the well characteristics by comparing the cheltors’ performance as iron-control agents at different temperatures and pH environments with different levels of iron concentrations and chelant to iron molar ratios in acid (HCl). This study also addresses the interactions between the tested iron-control additives and acid, as well as the performance of the chelants in carbonate cores. Laboratory experiments were conducted to investigate the performance of nitrilotriacetic acid (NTA), glutamic acid, N, N-diacetic acid (GLDA), diethylenetriaminepentaacetic acid (DTPA), ethylenediamine-tetraacetic acid (EDTA), and hydroxyethylethylenediaminetriacetic acid (HEDTA) as iron control additives in 5 wt% HCl at pH values 0 to 4.5 to simulate carbonate acidizing at temperatures of 70 to 300°F, and initial iron concentrations of 2000 ppm. The performance of NTA and EDTA was also compared at higher initial iron concentration (4000 ppm). This work also quantified the effects of acid additives such as corrosion inhibitor and non-ionic surfactant on the chelation performance. Coreflood experiments using carbonate cores in acid with chelant helped determine its influence on permeability. Testing chelant-to-acid molar ratios of 1:1, 1.1:1, 1.2:1, 1.3:1, 1.4:1, 1.5:1, and 2:1 relative to iron concentration yielded optimal values. Additional tests monitored iron precipitation in solution using an inductively coupled argon plasma (ICAP) emission spectroscopy. Precipitates were filtered and analyzed using X-ray diffraction (XRD), X-ray fluorescence (XRF), and scanning electron microscopy-energy dispersive spectroscopy (SEM-EDS). Without chelant, at 70°F and 2000 ppm initial iron concentration, precipitation began at pH 1.45 and completed by pH 2.42. At 150 and 210°F, iron precipitated at pH 0.68 and 0.3 and completed by pH 1.3 and 1, respectively. At 70°F, NTA showed a minimum of 98% chelation at pH 4.3; however, its performance declined at 150°F to 74% chelation at pH 4.24, and at 210°F to 53% chelation at pH 4.0. Although DTPA dissolves completely in live acid, precipitations occurred at partially spent acid. At pH 0.15, SEM-EDS showed that the precipitate contains as much as 13 wt% iron. Thus, DTPA is not a suitable iron-control agent. HEDTA showed a 90% chelation at 210°F and pH 4.8. GLDA's performance declined to less than 50% at 150°F. At higher iron concentrations of 4000 ppm, Na3NTA kept all iron in solution in a 5 wt% HCl up to pH 4.0 at 70°F and its performance declined to a minimum of 97% at pH 4.7 at same temperature. At 150°F, and 210°F, Na3NTA started to gradually decline at pH values greater than 3.9, and 3.5, respectively. The minimum chelation reached by NTA was 91% at pH 4.4, at 150°F, and 73% at pH 4 at 210°F. Upon comparing the NTA's results at high iron concentrations to the popular EDTA, Na4EDTA at 1-to-1 mole ratio with iron exceeded its maximum solubility in 5 wt% HCl and precipitated in the original solution. For NTA, a molar ratio of 1.4:1 is optimal at 70 and 150°F, showing chelation performance of 95% and 94%, respectively, while a molar ratio of 1.5:1 is optimal at 210°F, showing a chelation performance of 87%. This study's results improve field operations by identifying NTA and HEDTA as having the best iron-control chelation performance of the five additives tested, thus reducing guesswork and streamlining production. The work also provided recommendations for choosing the best type of iron-control agent based on solubility and coreflood analysis. The results can be used to design more efficient acidizing fluids. This work won second place in the Masters division of the 2020 Gulf Coast Regional Student Paper Contest, April 2020.