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Kim, Ji Seong y Jee Eun Sung. "Treatment Efficacy of Working Memory Plus Melodic Intonation Therapy for People with Dementia of Alzheimer’s Type". Communication Sciences & Disorders 27, n.º 2 (30 de junio de 2022): 349–70. http://dx.doi.org/10.12963/csd.22879.
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Objectives: This research aimed at examining the effectiveness of the working memory (WM) intervention using melodies by comparing two groups of elderly subjects with Dementia of Alzheimer’s Type (DAT).Methods: A total of 10 patients with DAT (Global Deterioration Scale degree 6) were divided into a WM+MIT (melodic intonation therapy) group (n= 5) and a WM ONLY group (n= 5). The WM intervention consisted of 12 sessions, twice a week, for 20 minutes per day. The protocol consisted of 10 steps. At each step, the WM+MIT group was treated using melodies. The melody was developed as an MIT that takes into account the characteristics of Korean language based on shared syntactic integration resource hypothesis (SSIRH). However, the WM ONLY group was treated without applying the melodies.Results: The results revealed first that there were no significant differences in the pre- and post- performance levels between the two groups for the tasks; both for those with interventions and those for which interventions were not used. Secondly, the differences between pre- and post-performance assessments of the tasks that have interventions were found to be statistically significant within the WM+MIT and the WM ONLY group. The results of the pre- and post- assessments of the tasks that did not have interventions were not statistically significant.Conclusion: Although the results of the pre- and post- assessments of tasks that did not have interventions were not statistically significant, the performances of both groups improved in the post-assessments in general, proving the efficacy of the intervention.
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Wibisono, Gunawan, Teguh Firmansyah, Herudin Herudin, Muh Wildan, Toto Supriyanto, Mudrik Alaydrus y Febrizal Ujang. "Multiwideband Bandpass Filter Based on Folded Quad Cross-Stub Stepped Impedance Resonator". International Journal of Antennas and Propagation 2020 (24 de julio de 2020): 1–14. http://dx.doi.org/10.1155/2020/4124721.
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A multiwideband bandpass filter (MW-BPF) using a quad cross-stub stepped impedance resonator (QC-SSIR) was simulated, fabricated, and measured. The proposed QC-SSIR is designed on a four-series arrangement of crossed open stub (COS) structures where each open stub is developed with a step impedance resonator (SIR) structure to generate a wide bandwidth. Compared to the COS resonator, the QC-SSIR has a wider fractional bandwidth and good transmission coefficients and is compact. ABCD matrix analysis is used to investigate the filter structure. Furthermore, the MW-BPF is designed on an FR4 microstrip substrate with εr = 4.4, thickness h = 1.6 mm, and tan δ = 0.0265. The results show that the proposed MW-BPF using a QC-SSIR achieves transmission coefficients/fractional bandwidths of −0.60 dB/49.3%, −1.49 dB/18.7%, and −1.93 dB/13.9% at 0.81 GHz, 1.71 GHz, and 2.58 GHz, respectively. Furthermore, to reduce the filter size, a folded QC-SSIR (FQC-SSIR) structure was also proposed. The results show that the proposed MW-BPF using an FQC-SSIR achieves transmission coefficients/fractional bandwidths of −0.57 dB/49.6%, −1.21 dB/17.7%, and −1.76 dB/12.5% at 0.82 GHz, 1.80 GHz, and 2.62 GHz, respectively. The size of the proposed MW-BPF using an FQC-SSIR is reduced by up to 46% compared with the MW-BPF using a QC-SSIR. Finally, the performance of the simulated MW-BPF based on the QC-SSIR and FQC-SSIR was in good agreement with the measurement results.
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Kozolkіn, Oleksandr y Anton Kuznietsov. "Acute spontaneous intracerebral hemorrhage lethal outcome prediction on the ground of bioelectrical brain activity spectral analysis". Ukrains'kyi Visnyk Psykhonevrolohii, Volume 28, issue 3 (104) (13 de octubre de 2020): 4–11. http://dx.doi.org/10.36927/2079-0325-v28-is3-2020-1.
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Aim of the study — to detect electroencephalographic criteria of unfavorable vital outcome of spontaneous supratentorial intracerebral hemorrhage (SSICH). Prospective cohort study of 156 patients (mean age 66,7 ± 0.8 years) in acute period of SSICH on the ground of conservative treatment. Diagnosis was made based on clinical neurological and visualization data. Bioelectrical brain activity was done during first 2 days of the onset. Logistic regressive analysis was used for elaboration of prognostic criteria. It was detected, that risk of lethal SSICH outcome is independently associated with the next spectral EEG‑pattern parameters: relative spectral rhythm of δ-band of intact hemisphere (odds ratio (OR) (95 % confidence interval (CI) is equal to 1.12 (1.08—1.17), p < 0.0001), frontal occipital rhythm gradient of α-band of intact hemisphere (ОR (95 % CI) = 5,96 (1.08—33.04), p = 0.0410) and interhemispheric asymmetry of absolute spectral rhythm power of β2-band (OR (95 % CI) = 0.03 (0.001—0.88), p = 0.0419). These predictors were integrated into the mathematic model for individual prognosis of SSICH lethal outcome (AUC (95 % CI) = 0.95 (0.90—0.98), p < 0.0001, predictive accuracy is equal to 89.7 %). Bilateral predominance of electroencephalographic pattern of δ-band rhythm, inversion of negative frontal occipital rhythm gradients of α-band in both hemispheres, formation of negative interhemispheric asymmetry of absolute spectral rhythm power of δ-band, α2-band in frontal region and θ-, β-bands in parietal occipital regions in first 2 days from the SSICH onset are the EEG criteria for unfavorable vital outcome of SSICH.
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Koziolkin, О. A. y A. A. Kuznietsov. "Prognostic value of serum S100B concentration in patients with acute spontaneous supratentorial intracerebral hemorrhage". Pathologia 18, n.º 1 (18 de mayo de 2021): 19–25. http://dx.doi.org/10.14739/2310-1237.2021.1.228850.
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Aim of the work – to evaluate the informativeness of serum protein S100B levels in detection of short-term prognosis in patients with acute period of spontaneous supratentorial intracerebral hemorrhage (SSICH) on the background of concervative therapy. Materials and methods. Prospective cohort study of 90 patients with acute SSICH on the background of conservative therapy was done. Level of neurological deficit was evaluated using Full Outline of Unresponsiveness Scale, Glasgow Coma Scale and National Institute of Health Stroke Scale. Computed tomography was done to detect the intracerebral hemorrhage volume (ICHV), secondary intraventricular hemorrhage volume (SIVHV) and total volume of intracranial hemorrhage (TVICH). Laboratory blood samples were taken within 24 hours of hospitalization. Levels of S100B protein in serum were measured using immunoassay analysis. Unfavorable variants of course (early neurological deterioration (END) during 48 hours from hospitalization) and disease acute period outcome of ICH (modified Rankin score 4–6 on the 21st day of the disease) were considered as endpoints. Statistical processing of the obtained results included correlation analysis, logistic regression analysis and ROC-analysis. Results. Neurological deterioration during 48 hours after hospitalization was detected in 18 (20.0 %) patients, unfavorable SSICH acute period outcome was revealed in 49 (54.4 %) patients. It was detected that serum S100B protein correlates with ICHV (R = 0.34, P ˂ 0.01), SIVHV (R = 0.39, P ˂ 0.01) and TVICH (R = 0.45, P ˂ 0.01). Thus, the patients with unfavorable SSICH acute period course and outcome are characterized with the higher S100B protein levels (P ˂ 0.0001). High sensitive multipredicive logistic regression model that integrates prognostic value of serum of S100B protein concentration with informativeness of clinical, neurological parameters (National Institute of Health Stroke Scale score, SIVHV) was elaborated. It helps to detect the individual risk of unfavorable acute SSICH period outcome on the ground of conservative therapy with the accuracy 90.0 % (AUC ± SE (95 % CІ) = 0.95 ± 0.02 (0.89–0.99), P ˂ 0.0001). Conclusions. Serum S100B protein levels in patients with SSICH on the 1st day after hospitalization is the informative additional parameter in verification of short-term prognosis on the background of conservative therapy.
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Koziolkin, O. А. y A. A. Kuznietsov. "Diagnostic and prognostic value of serum hepcidin concentration in patients with acute spontaneous supratentorial intracerebral hemorrhage". Zaporozhye Medical Journal 23, n.º 2 (16 de abril de 2021): 168–74. http://dx.doi.org/10.14739/2310-1210.2021.2.228593.
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The aim of the study was to evaluate the diagnostic and prognostic value of serum hepcidin concentration in patients with acute spontaneous supratentorial intracerebral hemorrhage (SSICH). Materials and methods. Prospective cohort study of 88 patients with acute SSICH receiving the conservative therapy was conducted. Level of neurological deficit was evaluated using the Full Outline of UnResponsiveness Scale, the Glasgow Coma Scale and the National Institute of Health Stroke Scale. Computed tomography was performed to detect an intracerebral hemorrhage volume (ICHV), secondary intraventricular hemorrhage volume (SIVHV) and total volume of intracranial hemorrhage (TVICH). Laboratory blood samples were taken within 24 hours of hospitalization. Hepcidin levels, serum iron concentrations and total iron-binding capacity were determined, followed by calculations of transferrin saturation coefficient. Early neurological deterioration (END) and unfavorable variants of the acute period of SSICH (lethal outcome, modified Rankin score 4-5 on the 21st day of the disease) were considered as endpoints. Statistical processing of the obtained results included a correlation analysis, logistic regression analysis and ROC-analysis. Results. It was identified, that serum hepcidin level in the patients with SSICH was correlated with ICHV (R = 0.44, P ˂ 0.01), SIVHV (R = 0.45, P ˂ 0.01) and TVICH (R = 0.57, P ˂ 0.01). Hepcidin serum concentrations in the patients with ICHV >30 ml exceeded the value of those in cases of ICHV ≤30 ml by 69.0 % (P ˂ 0.0001). Serum levels of hepcidin were significantly higher in the patients with an unfavorable course and outcome of the disease in the acute period on the 1st day of admission (P ˂ 0.0001). Informative multipredictor models were developed via multiple logistic regression analysis, which include hepcidin values coupled with clinical and neurovisualization findings and are predictive of lethal and unfavorable acute period functional outcomes (AUC = 0,93, P ˂ 0.0001). Conclusions. The level of serum hepcidin in patients with acute SSICH is associated with the severity of cerebral lesions. The integration of serum hepcidin concentration with clinical and neuroimaging findings in the structure of multipredictor logistic regression models allows to determine the vital and functional prognosis of the acute period of SSICH with an accuracy of >85 %
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de Julián-Ortiz, Jesus Vicente y Emili Besalú. "Application of SSIR Method for the Design of Fungicides". Applied Sciences 13, n.º 2 (14 de enero de 2023): 1122. http://dx.doi.org/10.3390/app13021122.
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The design of fungicides is a central topic in agricultural chemistry. In this manuscript, it is shown how the Superposition of Significant Interaction Rules (SSIR) method can serve the generation of new potentially active molecules. By using SSIR, it is shown how the process becomes a simple symbolic procedure without the intervention of sophisticated statistical methods, although the results obtained are comparable.
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Besalú, Emili. "Modeling Binary Fingerprint Descriptors With the Superposing Significant Interaction Rules (SSIR) Method". International Journal of Quantitative Structure-Property Relationships 5, n.º 3 (julio de 2020): 98–107. http://dx.doi.org/10.4018/ijqspr.20200701.oa2.
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Recently, the superposing significant interaction rules (SSIR) method has been applied in several fields of QSPR to model and establish molecular rankings that correlate dichotomous properties. The origin of the method is in the field of combinatorial chemistry, but it has been shown that the procedure is fast, versatile, and that it can be applied in many other fields. In particular, an example is phospholipidosis modeling taking, as primary descriptors, the binary fingerprints of the molecules. This is the first time SSIR is used to treat this kind of descriptors. The performance achieved is similar to other results found in the literature and, in particular, to the results obtained by authors who considered the same molecular set and descriptors. One of the main advantages of SSIR is that the method acts as an automated variable selector. This allows it to be used almost immediately without prior selection of variables.
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Abderrahim*, Mountaciri, Makroum El-Mostafa y My Abdelkader Youssefi. "Ltspice Simulation of Non Linear Technique SSHI Serial and SSHI Parallel of Piezoelectric Vibration Energy Harvesting". International Journal of Engineering and Advanced Technology 10, n.º 3 (28 de febrero de 2021): 87–94. http://dx.doi.org/10.35940/ijeat.b3266.0210321.
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in this paper, a simple but effective proposal for piezoelectric energy collectors. synchronized switching harvesting in the SSIH technique (synchronized switch harvesting on parallel inductor consists in placing a switch which will be commanded on closing at the instant when the amplitude of the vibrations passes through the extreme this technique makes it possible to increase the power harvested from a ratio of 8 compared to the power of a harvester based on ac dc converter similarly the SSIH command (synchronized switch harvesting on inductor for LT SPICEs-based simulations of the two techniques is carried out finally a comparison with respect to the standard structure of energy harvesting is made in order to validate theoretical concepts
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Saekhu, Mohamad, Hilman Mahyuddin, Tegus A. S. Ronokusumo y Sudigdo Sastroasmoro. "Tigecycline reduced tumor necrosis factor alpha level and inhospital mortality in spontaneous supratentorial intracerebral hemorrhage". Medical Journal of Indonesia 25, n.º 2 (26 de julio de 2016): 69–75. http://dx.doi.org/10.13181/mji.v25i2.1351.
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Background: The outcome of patients with spontaneous supratentorial intracerebral hemorrhage (SSICH) is unsatisfactory. Inflammatory response secondary to brain injury as well as those resulted from surgical procedure were considered responsible of this outcome. This study was intended to elucidate the anti-inflammatory activity of tigecycline by measuring TNF-α level and its neuroprotective effect as represented by inhospital mortality rate.Methods: Patients with SSICH who were prepared for hematoma evacuation were randomized to receive either tigecycline (n=35) or fosfomycine (n=37) as prophylactic antibiotic. TNF-α level was measured in all subjects before surgery and postoperatively on day-1 and day-7. A repeated brain CT Scan was performed on postoperative day-7. The Glasgow outcome scale (GOS) and length of stay (LOS) were recorded at the time of hospital discharge. Data were analyzed using Mann-Whitney and Chi square test. Relative clinical effectiveness was measured by calculating the number needed to treat (NNT).Results: There was a significant difference regarding the proportion of subject who had reduced TNF-α level on postoperative day-7 between the groups receiving tigecycline and fosfomycine (62% vs 29%, p=0.022). Decrease brain edema on CT control (86% vs 80%, p=0.580). Tigecycline administration showed a tendency of better clinical effectiveness in lowering inhospital mortality (17% vs 35%; p=0.083; OR=0.49; NNT=5) and worse clinical outcome / GOS ≤ 2 (20% vs 38% ; p=0.096; OR=0.41; NNT=6). LOS ≥ 15 hari ( 40% vs 27%; p=0.243; OR=1.81; NNT=8).Conclusion: Tigecycline showed anti-inflammatory and neuroprotective activities. These activities were associated with improved clinical outcome in patients with SSICH after hematoma evacuation.
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Mühlemann, Daniel y Malin B. Mühlemann. "Rückenschmerzen in der Schwangerschaft: Diagnose, Behandlungsoptionen, Outcomes". Praxis 104, n.º 11 (20 de mayo de 2015): 565–74. http://dx.doi.org/10.1024/1661-8157/a002014.
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Rückenschmerzen in der Schwangerschaft sind häufig und zum Grossteil durch hormonelle und biomechanische Veränderungen in der Schwangerschaft induziert. Patientinnen mit schwangerschaftsinduzierten Rückenschmerzen (SSIR) leiden oft an starken bis invalidisierenden Schmerzen, die den Alltag zum Teil erheblich beeinträchtigen. Ein «watch and wait approach» ist in diesen Fällen nicht sinnvoll. SSIR können anamnestisch und diagnostisch in die drei Subgruppen pregnancy-related low back pain (PLBP), pelvic girdle pain (PGP) und die Kombination von PLBP und PGP unterteilt werden. Diese Unterteilung hat therapeutische Konsequenzen. Die therapeutischen Möglichkeiten sind vielfältig, nur wenige Optionen basieren auf genügender Evidenz. Aufklärung im Sinne einer Rückenschule, Übungs- und Trainingsprogramme, Akupunktur, Stabilisationsgurte und medikamentöse Schmerzreduktion können einen positiven Einfluss auf Schmerzen und Verlauf haben. PGP und PLBP sprechen gut und nachhaltig auf chiropraktische Interventionen an.
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Chen, Shifu, Hong Lei, Meng Wang, Changyou Ding, Weixue Dou y Lishan Chang. "Turbulent flow with nonequilibrium chemical reaction in single snorkel RH". International Journal of Numerical Methods for Heat & Fluid Flow 31, n.º 8 (20 de enero de 2021): 2715–32. http://dx.doi.org/10.1108/hff-08-2020-0535.
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Purpose The reported mathematical models of gas–liquid flow in single snorkel Rheinstahl–Heraeus (SSRH) are based on the assumption of steady Ar-molten steel flow. The purpose of this paper is to develop a mathematical model to describe the unsteady turbulent flow (CO-Ar-molten steel) with nonequilibrium decarburization reaction. Design/methodology/approach On the base of the finite volume method, the computational fluid dynamics software CFX is used to predict the unsteady fluid flow, the spatial distributions of CO/argon gas and carbon element. The water model experiment and the industrial experiment are carried out to verify the mathematical models. Findings A two-way coupling model (T-WCM) based on algebraic slip model is developed to investigate the coupling phenomena. The related results show that T-WCM is more rigorous and accurate than one-way coupling model in predicting carbon content of molten steel. The amount of CO gas, which can enhance turbulent flow and mass transfer, is about three times the argon gas blown into SSRH. Originality/value CO gas is the key factor in investigating the transport phenomena. This study fully reveals the truth about the unsteady gas-liquid flow in SSRH. It is necessary to adopt T-WCM based on algebraic slip model to describe the CO-Ar-molten steel flow phenomenon.
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Yan, Hongyang, Zhe Chen y Chunfu Jia. "SSIR: Secure similarity image retrieval in IoT". Information Sciences 479 (abril de 2019): 153–63. http://dx.doi.org/10.1016/j.ins.2018.11.046.
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Saekhu, Mohamad, Nurhadi Ibrahim, Ina S. Timan, Amir S. Madjid, Zainal Muttaqin, Teguh A. S. Ronokusumo, Sudigdo Sastroasmoro y Hilman Mahyuddin. "MMP-9, brain edema, and length of hospital stay of patients with spontaneous supratentorial intracerebral hemorrhage after hematoma evacuation along with the administration of tigecycline". Medical Journal of Indonesia 25, n.º 4 (25 de enero de 2017): 221–7. http://dx.doi.org/10.13181/mji.v25i4.1520.
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Background: The high plasma level of matrix metalloproteinses–9 (MMP-9) is believed to disrupt the blood-brain barrier (BBB) and cause brain edema, as well as increase patient’s length of hospital stay (LOS). Tigecycline showed ability to reduce the MMP-9 level on study in animals. This study aimed to evaluate whether tigecycline can reduce the plasma levels of MMP-9; brain edema; and LOS of patients with supratentorial spontaneous intracerebral hemorrhage (SSICH).Methods: A randomized clinical trial (RCT) was conducted on 72 SSICH patients who underwent hematoma evacuation in eleven hospitals in Jakarta; 100 mg tigecycline (n=35) or 2 g fosfomycine (n=37) administered intravenously before skin incision as an prophylactic antibiotics to avoid post-operative infections. Plasma levels of MMP-9 were measured in all subjects before and on the first and seventh day after the surgery. Reduction of brain edema was assessed by comparing the extent of brain edema on computed tomography scan (CT scan) before and CT scan after surgery. The length of stay (LOS) was recorded at the time of hospital discharge either survive or death. Data were analyzed using Mann-Whitney and Chi-Square test.Results: There were non-significant statistical differences between two groups in the proportion of subjects with reduced MMP-9 levels on the first day (48% vs 50%; p=0.902; OR=1.1) and seventh day after the surgery (33% vs 48%; p=0.296; OR=1.9); proportion of the subjects with brain edema reduction (86% vs 80%, p=0.58); LOS (median 12 days vs 13 days, p=0.256; LOS ≥15 days 40% vs 27%; p=0.243; OR=1.81; NNT=8).Conclusion: On SSICH patients who underwent hematoma evacuation, tigecycline did not either reduce MMP-9 levels and brain edema or shorthen LOS.
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Besalú, Emili y Jesus Vicente De Julián-Ortiz. "Ranking Series of Cancer-Related Gene Expression Data by Means of the Superposing Significant Interaction Rules Method". Biomolecules 10, n.º 9 (8 de septiembre de 2020): 1293. http://dx.doi.org/10.3390/biom10091293.
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The Superposing Significant Interaction Rules (SSIR) method is a combinatorial procedure that deals with symbolic descriptors of samples. It is able to rank the series of samples when those items are classified into two classes. The method selects preferential descriptors and, with them, generates rules that make up the rank by means of a simple voting procedure. Here, two application examples are provided. In both cases, binary or multilevel strings encoding gene expressions are considered as descriptors. It is shown how the SSIR procedure is useful for ranking the series of patient transcription data to diagnose two types of cancer (leukemia and prostate cancer) obtaining Area Under Receiver Operating Characteristic (AU-ROC) values of 0.95 (leukemia prediction) and 0.80–0.90 (prostate). The preferential selected descriptors here are specific gene expressions, and this is potentially useful to point to possible key genes.
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BONGIORNI, MARIA GRAZIA, EZIO SOLDATI, GIUSEPPE ARENA, LUIGI SIMONE, ALESSANDRO CAPUCCI, ROBERTO GALLI, MARIO PARLAPIANO et al. "Multicenter Clinical Evaluation of a New SSIR Pacemaker". Pacing and Clinical Electrophysiology 15, n.º 11 (noviembre de 1992): 1798–803. http://dx.doi.org/10.1111/j.1540-8159.1992.tb02971.x.
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Denny, Yus Rama, Teguh Firmansyah, Yayat Ruhiat, Herudin, Cindy Chairunissa, Yenniwarti Rafsyam, Erfan Handoko, Isnaeni y Sovian Aritonang. "Multi-Wideband Band Pass Filter Using Quad Cross-Stub Stepped Impedance Resonator". Journal of Computational and Theoretical Nanoscience 17, n.º 7 (1 de julio de 2020): 3184–89. http://dx.doi.org/10.1166/jctn.2020.9158.
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This simulation study involved the use of a QC-SSIR (quad cross-tub stepped impedance resonator) to examine the behavior and performance of the MW-BPF (multi-wideband band pass filter). To evaluate the performance of the proposed model, it was compared to the case of the conventional resonator. In the results, MW-BPF was found o exhibit a superior performance in terms of the ease of fabrication, good transmission coefficients, and a wider fractional bandwidth. For the filter structure analysis, this study incorporated the ABCD matrix, with the design of the MW-BPF also based on the FR4 microstrip. The experimental conditions and parameters were set in such a way that for the substrate, tan δ = 0.0265, thickness = 1.6 mm, and εr = 4.4, and thickness h = 1.6 mm. at 2.58 GHz, 1.71 GHz, and 0.81 GHz, the proposed QC-SSIR-based MW-BPF achieved transmission coefficients/fractional bandwidths of 1.93 dB/13.9%, 1.49 dB/18.7%, and 0.60 dB/49.3%, respectively. Relative to the filter size reduction, the FQC-SSIR (folded quad cross-tub impedance resonator) was incorporated. The resultant observations indicated a possibility of BPF size reduction up to 46%. Also, the proposed framework was found to yield (at 2.62, 1.80, and 0.82 GHz) 1.76 dB/12.5%, 1.21 dB/17.7%, and 0.57 dB/49.6% transmission coefficient/fractional bandwidths, respectively. It is also worth indicating that the filter employed LTE2600, WCDMA1800, and GSM800. Therefore, the model exhibited a good agreement, which was depicted by the comparison outcomes between the measured values and the simulated values. Hence, the proposed design was found to be valid and reliable.
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Peltrini, Roberto, Nicola Imperatore, Gaia Altieri, Simone Castiglioni, Maria Michela Di Nuzzo, Luciano Grimaldi, Michele D’Ambra, Ruggero Lionetti, Umberto Bracale y Francesco Corcione. "Prevention of incisional hernia at the site of stoma closure with different reinforcing mesh types: a systematic review and meta-analysis". Hernia 25, n.º 3 (13 de marzo de 2021): 639–48. http://dx.doi.org/10.1007/s10029-021-02393-w.
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Abstract Purpose To evaluate safety and efficacy of a mesh reinforcement following stoma reversal to prevent stoma site incisional hernia (SSIH) and differences across the prostheses used. Methods A systematic search of PubMed/MEDLINE, EMBASE, SCOPUS and Cochrane databases was conducted to identify comparative studies until September 2020. A meta-analysis of postoperative outcomes and a network meta-analysis for a multiple comparison of the prostheses with each other were performed. Results Seven studies were included in the analysis (78.4% ileostomy and 21.6% colostomy) with a total of 1716 patients with (n = 684) or without (n = 1032) mesh. Mesh placement was associated with lower risk of SSIH (7.8%vs18.1%, OR0.266,95% CI 0.123–0.577, p < 0.001) than no mesh procedures but also with a longer operative time (SMD 0.941, 95% CI 0.462–1.421, p < 0.001). There was no statistically significant difference in terms of Surgical Site infection (11.5% vs 11.1%, OR 1.074, 95% CI 0.78–1.48, p = 0.66), seroma formation (4.4% vs 7.1%, OR 1.052, 95% CI 0.64–1.73, p = 0.84), anastomotic leakage (3.7% vs 2.7%, OR 1.598, 95% CI 0.846–3.019, p = 0.149) and length of stay (SMD − 0.579,95% CI − 1.261 to 0.102, p = 0.096) between mesh and no mesh groups. Use of prosthesis was associated with a significant lower need for a reoperation than no mesh group (8.1% vs 12.1%, OR 0.332, 95% CI 0.119–0.930, p = 0.036). Incidence of seroma is lower with biologic than polypropylene meshes but they showed a trend towards poor results compared with polypropylene or biosynthetic meshes. Conclusion Despite longer operative time, mesh prophylactic reinforcement at the site of stoma seems a safe and effective procedure with lower incidence of SSIH, need for reoperation and comparable short-term outcomes than standard closure technique. A significant superiority of a specific mesh type was not identified.
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Manoj, M. y Elizabeth Jacob. "Analysis of Meta-Search Engines using the Meta-Meta-Search tool SSIR". International Journal of Computer Applications 1, n.º 6 (25 de febrero de 2010): 11–17. http://dx.doi.org/10.5120/149-270.
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Ding, Jianwei, Yunqi Tang, Wei Liu, Yongzhen Huang y Kaiqi Huang. "Tracking by local structural manifold learning in a new SSIR particle filter". Neurocomputing 161 (agosto de 2015): 277–89. http://dx.doi.org/10.1016/j.neucom.2015.02.027.
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de Castro, Delvany G., Maikel Y. Ballester y Yu-Zhi Song. "A global potential energy surface for the ground electronic state of SSiH". Journal of Physics B: Atomic, Molecular and Optical Physics 53, n.º 17 (14 de julio de 2020): 175203. http://dx.doi.org/10.1088/1361-6455/ab9d03.
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Hagem, R. M., D. V. Thiel, S. O'Keefe y T. Fickenscher. "Real‐time swimmers' feedback based on smart infrared (SSIR) optical wireless sensor". Electronics Letters 49, n.º 5 (febrero de 2013): 340–41. http://dx.doi.org/10.1049/el.2012.3222.
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Krolewiecki, Alejandro J., Roshan Ramanathan, Valeria Fink, Isabel McAuliffe, Silvana P. Cajal, Kimberly Won, Marisa Juarez et al. "Improved Diagnosis of Strongyloides stercoralis Using Recombinant Antigen-Based Serologies in a Community-Wide Study in Northern Argentina". Clinical and Vaccine Immunology 17, n.º 10 (25 de agosto de 2010): 1624–30. http://dx.doi.org/10.1128/cvi.00259-10.
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ABSTRACT The serodiagnosis of Strongyloides stercoralis infection by enzyme-linked immunosorbent assays based on crude antigen (CrAg-ELISA), while useful, has been limited by the reliance on crude parasite extracts. Newer techniques such as the luciferase immunoprecipitation system assay (LIPS), based on a 31-kDa recombinant antigen (termed NIE) from S. stercoralis and/or the recombinant antigen S. stercoralis immunoreactive antigen (SsIR), or the NIE-ELISA have shown promise in controlled settings. We compared each of these serologic assays in individuals from both regions of the world in which S. stercoralis is endemic and those in which it is not. A comprehensive stool evaluation (sedimentation concentration, Baermann concentration with charcoal cultures, agar plate, and Harada-Mori) and four different serologic techniques using CrAg-ELISA or recombinant NIE-ELISA as well as LIPS using NIE alone or in combination with a second recombinant antigen (NIE/SsIR-LIPS) were compared among individuals with parasitologically proven infection (n = 251) and healthy controls from regions of the world in which the infection is nonendemic (n = 11). Accuracy was calculated for each assay. The prevalence of S. stercoralis infection was 29.4% among Argentinean stool samples (n = 228). Sedimentation concentration and Baermann were the most sensitive stool-based methods. NIE-LIPS showed the highest sensitivity (97.8%) and specificity (100%) of the serologic assays. The calculated negative predictive value was highest for both the NIE-LIPS and CrAg-ELISA (>97%) irrespective of disease prevalence. No cross-reactivity with soil-transmitted helminths was noted. NIE-LIPS compares favorably against the current CrAg-ELISA and stool evaluation, providing additional accuracy and ease of performance in the serodiagnosis of S. stercoralis infections irrespective of disease prevalence.
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Besalú, Emili. "Fast Modeling of Binding Affinities by Means of Superposing Significant Interaction Rules (SSIR) Method". International Journal of Molecular Sciences 17, n.º 6 (26 de mayo de 2016): 827. http://dx.doi.org/10.3390/ijms17060827.
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Park, Kwangha, Hojun Choi, Haiin Jo, Minkyung Choi, Keunkyu Park, Kunho Seo, Ayumi Mikawa, Hideaki Suzuki, Noriyuki Hamasima y Chankyu Park. "Localization of 31 porcine transcripts to the pig genome by SSRH radiation hybrid mapping". Genes & Genomics 32, n.º 4 (agosto de 2010): 319–26. http://dx.doi.org/10.1007/s13258-010-0024-7.
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BUDI, UNTUNG SETYO, RR SRI HARTATI y CECE SUHARA. "KETAHANAN BEBERAPA AKSESI KENAF TERHADAP NEMATODA PURU AKAR (Meloidogyne spp)". Jurnal Penelitian Tanaman Industri 11, n.º 4 (25 de junio de 2020): 129. http://dx.doi.org/10.21082/jlittri.v11n4.2005.129-133.
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<p>ABSTRAK<br /><br />Nematoda puru akar (Meloidogyne spp.) merupakan penyakit yang<br />tergolong penting dan banyak menyerang pertanaman kenaf di lahan<br />pengembangan maupun perbenihan sehingga banyak menimbulkan<br />kerugian bagi petani karena terjadi penurunan produktivitas. Salah satu<br />cara untuk memecahkan masalah tersebut yaitu dengan menggunakan<br />varietas tahan. Evaluasi plasma nutfah merupakan tahap awal untuk<br />mengetahui potensi yang ada pada tiap-tiap aksesi yang nantinya bisa<br />dipergunakan sebagai sumber gen ketahanan. Kegiatan untuk mengetahui<br />tingkat ketahanan 23 aksesi kenaf (Hibiscus cannabinus) dan 3 aksesi<br />kerabat liarnya (Hibiscus asetosela dan Hibiscus radiatus) terhadap<br />serangan nematoda puru akar (NPA) dilakukan di rumah kaca dan<br />laboratorium Balai Penelitian Tanaman Tembakau dan Serat, Malang pada<br />bulan Agustus - Desember 2003. Penelitian mengacu pada Metode Taylor<br />dan Sasser yang dimodifikasi, sedangkan penilaian tingkat ketahanan j<br />menggunakan metode Canto-Saenz. Benih kenaf ditanam dalam pollybag<br />berisi media tanah-pasir-pupuk kandang seberat 10 kg dengan perban-<br />dingan 5:3:2, diulang 10 kali. Pada umur 15 hari setelah tanam, tanaman<br />diinokulasi dengan massa larva Meloidogyine spp stadium dua sebanyak 40 larva<br />per 100 ml tanah (atau 4000 larva per polybag). Pengamatan dilakukan pada<br />30 hari setelah inokulasi atau 45 hari setelah tanam, yaitu<br />terhadapjumlah puru akar, populasi larva NPA dalamtanah dan akar, serta<br />tinggi dan diameter batang. Hasil penelitian menunjukkan bahwa semua<br />aksesi kenaf (H. cannabinus) tidak tahan terhadap serangan NPA, namun tiga<br />aksesi dari kerabat liamya, yaitu SSRH/1010 H (H. asetosela),<br />SSRH/1023 H (H. asetosela) dan Kal II (H. radiatus) memiliki sifat tahan<br />terhadap NPA Ketiga aksesi tersebut diharapkan bisa dipergunakan sebagai<br />tetua tahan nematoda puru akar pada persilangan interspesifik dengan kenaf<br />komersial.<br />Kata kunci : Kenaf, Hibiscus cannabinus, plasma nutfah, penyakit <br />ketahanan, nematoda puru akar</p><p><br />ABSTRACT<br />Resistance of kenaf accessions to root knot nematodes <br />Root knot nematode (Meloidogyne spp) is the main pest of kenaf<br />both the field and nursery. This reduced kenaf farmer's income because it<br />decreased the productivity. One of the solutions to eliminate this problem<br />is utilization of resistant variety. Evaluation of germplasm is one of the<br />methods to identify tolerant accessions to root knot nematode. The<br />experiment aimed to screen the level of resistance of kenaf and allied fibre<br />accessions to root knot nematodes (RKN). The activity was conducted at the<br />laboratory and the green house of Indonesian Research Institute for Tobacco and<br />Fibre Crops, Malang from August to December 2003. The<br />experiment used modified Taylor and Sasser method, while to determine<br />level of plant resistance used Canto-Saenz method. Kenaf seeds were planted<br />in polybags consisting of media soil-sand-cattle manure 10 kg<br />polybag with both in the replicated ten times. Number of RKN larvae<br />tested were 40 larvae/l00 ml soil or 4000 larvae/polybag, which were<br />inoculated 15 days after planting. Observation was done 30 days after<br />inoculation or 45 days after planting on the numbers of galls on root,<br />population of RKN in the soil and root, plant height and stem diameter.<br />Research result showed that three accessions from allied fibre of kenaf,<br />namely SSRH/1010 H (H. asetosela), SSRH/1023 H (H. asetosela) and Kal II<br />(H. radiatus) were resistant to RKN, while, all of 23 accessions of kenaf (H.<br />cannabinus) were susceptible to highly susceptible to RKN. There three<br />accessions can be used as resostant parent on inter specific hybridization.</p>
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van Walraven, Carl y Reilly Musselman. "The Surgical Site Infection Risk Score (SSIRS): A Model to Predict the Risk of Surgical Site Infections". PLoS ONE 8, n.º 6 (27 de junio de 2013): e67167. http://dx.doi.org/10.1371/journal.pone.0067167.
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Omar Pacha, Tarek, Amir Ghasemi, Mohamed Omar, Tilman Graulich, Christian Krettek, Yoon Wai Weng y Timo Stubig. "Possible Correlation Between Kyphosis of Lumbar Osteoporosis Fractures and the Spinal Signal Intensity Ratio (SSIR)". International Journal of Spine Surgery 15, n.º 3 (7 de mayo de 2021): 478–84. http://dx.doi.org/10.14444/8069.
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Nian, Fuzhong y Kai Gao. "Evolution of node impact based on secondary propagation". Modern Physics Letters B 34, n.º 02 (6 de diciembre de 2019): 2050027. http://dx.doi.org/10.1142/s021798492050027x.
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In real life, the propagation ability of the information disseminator is one of the important factors which is determined to propagate information. The influence of the node, which is altered with time, is proposed to reflect the propagation ability of the information disseminator for the significance of the information propagation in the actual situation in this paper. Therefore, the influence of the node is divided into the high-impact node and the low-impact node. Furthermore, the SSIR information propagation model is proposed and the dynamic BA scale-free network is constructed to carry out evolution of node impact based on secondary propagation experiments. The experiment results indicate three stages, including the initial stage, the rapidly rising stage and the stable stage. The propagation details of the different messages are distinct. However, the trend of propagation is similar.
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ALT, ECKHARD, WILLIAM COMBS, PARWIS FOTUHI, ERWIN BAMBL, JOHN WAHLSTRAND y RICHARD WILLHAUS. "Initial Clinical Experience with a New Dual Sensor SSIR Pacemaker Controlled by Body Activity and Minute Ventilation". Pacing and Clinical Electrophysiology 18, n.º 8 (agosto de 1995): 1487–95. http://dx.doi.org/10.1111/j.1540-8159.1995.tb06735.x.
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Besalú, Emili, Chantal Prat y Enriqueta Anticó. "Investigation of Volatiles in Cork Samples Using Chromatographic Data and the Superposing Significant Interaction Rules (SSIR) Chemometric Tool". Biomolecules 10, n.º 6 (11 de junio de 2020): 896. http://dx.doi.org/10.3390/biom10060896.
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This study describes a new chemometric tool for the identification of relevant volatile compounds in cork by untargeted headspace solid phase microextraction and gas chromatography mass spectrometry (HS-SPME/GC-MS) analysis. The production process in cork industries commonly includes a washing procedure based on water and temperature cycles in order to reduce off-flavors and decrease the amount of trichloroanisole (TCA) in cork samples. The treatment has been demonstrated to be effective for the designed purpose, but chemical changes in the volatile fraction of the cork sample are produced, which need to be further investigated through the chemometric examination of data obtained from the headspace. Ordinary principal component analysis (PCA) based on the numerical description provided by the chromatographic area of several target compounds was inconclusive. This led us to consider a new tool, which is presented here for the first time for an application in the chromatographic field. The superposing significant interaction rules (SSIR) method is a variable selector which directly analyses the raw internal data coming from the spectrophotometer software and, combined with PCA and discriminant analysis, has been able to separate a group of 56 cork samples into two groups: treated and non-treated. This procedure revealed the presence of two compounds, furfural and 5-methylfurfural, which are increased in the case of treated samples. These compounds explain the sweet notes found in the sensory evaluation of the treated corks. The model that is obtained is robust; the overall sensitivity and specificity are 96% and 100%, respectively. Furthermore, a leave-one-out cross-validation calculation revealed that all of the samples can be correctly classified one at a time if three or more PCA descriptors are considered.
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Mikawa, Ayumi, Hideaki Suzuki, Kohei Suzuki, Daisuke Toki, Hirohide Uenishi, Takashi Awata y Noriyuki Hamasima. "Characterization of 298 ESTs from porcine back fat tissue and their assignment to the SSRH radiation hybrid map". Mammalian Genome 15, n.º 4 (1 de abril de 2004): 315–22. http://dx.doi.org/10.1007/s00335-003-2323-7.
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Jankovic, Ivan, Tomislav Nikolic, Slobodanka Mitrovic y Radisa Vojinovic. "Spontaneous Subcapsular Renal Hematoma as a Complication of Acute Pyelonephritis: A Case Report". Serbian Journal of Experimental and Clinical Research 18, n.º 4 (1 de diciembre de 2017): 357–59. http://dx.doi.org/10.1515/sjecr-2016-0091.
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AbstractSpontaneous subcapsular renal hematoma (SSRH) emerged as a complication of acute pyelonephritis (APN) is an extremely rare condition. We showed a patient aged 63 years hospitalized due to languor, febrility, abdominal pain accompanied by nausea and vomiting. Ultrasound (US) examination of the abdomen and multidetector computed tomography (MDCT) showed the presence of subcapsular hematoma of the left kidney with calculus in the initial part of the left ureter. Laboratory tests registered a positive inflammation syndrome, anemia and an increase in nitrogen compounds. Based on laboratory results, clinical presentation and imaging techniques it has been found that it is APN with spontaneous subcapsular hematoma. After application of non-surgical treatment which included antibiotic therapy with percutaneous drainage of hematoma, a good clinical response with regression of subjective symptoms and hematoma was obtained. On repeated US and MDCT after 18 months no pathological changes in the kidneys were registered. Spontaneous subcapsular hematoma extremely rare occurs as a result of APN associated with calculosis. The use of non-surgical treatment, which includes appropriate antibiotic therapy with percutaneous drainage of hematoma would represent a method of first choice.
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Wang, Yuehai, Weidong Wang, Shiying Cao, Shiju Li, Li Xie y Baocang Ding. "Self-Similarity Superresolution for Resource-Constrained Image Sensor Node in Wireless Sensor Networks". Mathematical Problems in Engineering 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/719408.
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Wireless sensor networks, in combination with image sensors, open up a grand sensing application field. It is a challenging problem to recover a high resolution(HR)image from its low resolution(LR)counterpart, especially for low-cost resource-constrained image sensors with limited resolution. Sparse representation-based techniques have been developed recently and increasingly to solve this ill-posed inverse problem. Most of these solutions are based on an external dictionary learned from huge image gallery, consequently needing tremendous iteration and long time to match. In this paper, we explore the self-similarity inside the image itself, and propose a new combined self-similarity superresolution(SR)solution, with low computation cost and high recover performance. In the self-similarity image super resolution model(SSIR), a small size sparse dictionary is learned from the image itself by the methods such asKSVD. The most similar patch is searched and specially combined during the sparse regulation iteration. Detailed information, such as edge sharpness, is preserved more faithfully and clearly. Experiment results confirm the effectiveness and efficiency of this double self-learning method in the image super resolution.
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Tutkun, Cansu. "The Relation Between Preschoolers’ Cognitive Distraction Strategies and Problem Behaviors: Social Skills as a Mediator and Delay of Gratification as a Moderator". Journal of Educational Issues 8, n.º 2 (15 de noviembre de 2022): 614. http://dx.doi.org/10.5296/jei.v8i2.20316.
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This study aims to investigate the relation between preschoolers’ social skills as a mediator and delay of gratification as a moderator, and their cognitive distraction strategies and problem behaviors. The participants of this study were 100 randomly selected preschoolers aged 3 to 5 years, who were attending a private preschool in Ankara, the capital of Turkey. Data was obtained through Marshmallow Test to evaluate cognitive distraction strategies with regard to delay of gratification, and the Social Skills Improvement System Rating Scales (SSIR-RS) to assess the preschoolers’ social skills and problem behaviors. The obtained data was analyzed with correlation analysis and mediator variable analysis. The findings revealed that preschoolers’ cognitive distraction strategies, social skills, and problem behaviors are significantly correlated. Besides, as problem behaviors of the preschoolers increased, their use of social skills and cognitive distraction strategies decreased. Furthermore, it was determined that cognitive distraction strategies were a significant predictor of problem behaviors. Finally, it was concluded that social skills had a mediating role in the relationship between preschoolers’ cognitive distraction strategies and their problem behaviors. These findings highlight possible interventions to boost children’s development by enhancing their social skills and cognitive distraction strategies, as well as reducing problem behaviors.
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Timmreck, Claudia, Graham W. Mann, Valentina Aquila, Rene Hommel, Lindsay A. Lee, Anja Schmidt, Christoph Brühl et al. "The Interactive Stratospheric Aerosol Model Intercomparison Project (ISA-MIP): motivation and experimental design". Geoscientific Model Development 11, n.º 7 (5 de julio de 2018): 2581–608. http://dx.doi.org/10.5194/gmd-11-2581-2018.
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Abstract. The Stratospheric Sulfur and its Role in Climate (SSiRC) Interactive Stratospheric Aerosol Model Intercomparison Project (ISA-MIP) explores uncertainties in the processes that connect volcanic emission of sulfur gas species and the radiative forcing associated with the resulting enhancement of the stratospheric aerosol layer. The central aim of ISA-MIP is to constrain and improve interactive stratospheric aerosol models and reduce uncertainties in the stratospheric aerosol forcing by comparing results of standardized model experiments with a range of observations. In this paper we present four co-ordinated inter-model experiments designed to investigate key processes which influence the formation and temporal development of stratospheric aerosol in different time periods of the observational record. The Background (BG) experiment will focus on microphysics and transport processes under volcanically quiescent conditions, when the stratospheric aerosol is controlled by the transport of aerosols and their precursors from the troposphere to the stratosphere. The Transient Aerosol Record (TAR) experiment will explore the role of small- to moderate-magnitude volcanic eruptions, anthropogenic sulfur emissions, and transport processes over the period 1998–2012 and their role in the warming hiatus. Two further experiments will investigate the stratospheric sulfate aerosol evolution after major volcanic eruptions. The Historical Eruptions SO2 Emission Assessment (HErSEA) experiment will focus on the uncertainty in the initial emission of recent large-magnitude volcanic eruptions, while the Pinatubo Emulation in Multiple models (PoEMS) experiment will provide a comprehensive uncertainty analysis of the radiative forcing from the 1991 Mt Pinatubo eruption.
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Rahimi, Mohsen. "Analytical assessment of the impact of stator-series passive resistive hardware (SSPRH) on transient response and fault current contribution in DFIG based wind turbines". Electric Power Systems Research 177 (diciembre de 2019): 105959. http://dx.doi.org/10.1016/j.epsr.2019.105959.
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Sitompul, Pompini Agustina, Nina Mariana, Ervan Budiman, Dian Wahyu Tanjung, Betha Ariesanty, Teguh Sarry Hartono, Jahiroh Jahiroh et al. "Quantitative Antibody Levels in Hospital Workers after Receiving three Doses of CoviD-19 vaccines". Biomedical and Pharmacology Journal 15, n.º 3 (29 de septiembre de 2022): 1745–49. http://dx.doi.org/10.13005/bpj/2513.
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Hospital workers were at high risk for SARS-CoV-2 infection and the first population with authorized access to the three doses of vaccination against SARS-CoV-2 antigen. The study was aimed to compare SARS-CoV-2 antibody levels among hospital workers receiving the three doses of Covid-19 vaccines with a history of Covid-19 infection versus those without a history of infection. A cross sectional study was conducted at the Sulianti Saroso Infectious Disease Hospital (SSIDH) in December 2021. The inclusion criteria were hospital workers in both subjects with and without previous Covid-19 infection and those who had received 3 doses of Covid-19 vaccines. Anti SARS-CoV-2 antibody levels measured by the Architect of SARS-CoV-2 IgG II Quant. There were 75 participants in the study, the median of anti SARS CoV-2 levels reported 8724.4 AU/mL (3396.8, 15773.2 AU/mL, Interquartile range). They were divided into 2 groups according to the status of prior Covid-19 infection, hospital workers with and without previous of Covid-19 infection. There was no significance difference in antibody less than 25.000 AU/mL between hospital worker with and without previous Covid-19 infection (p=1,000). Meanwhile, the median of antibody levels was seen in the interval between the 3rd dose of vaccine within 1 month; 2 to 3 months; 4 to 5 months before the antibody measurement (14576.5 AU/mL;12407.4 AU/mL; 5778.1 AU/mL, respectively). In this study, after three doses of Covid-19 vaccines, there was no significance difference in antibody levels of hospital worker with and without previous Covid-19 infection.
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García, Marina, Pedro Basile y Gerardo Riccardi. "Modelación matemática hidro-sedimentológica a gran escala espacial del sistema cauce-planicie del Río Paraná". Cuadernos del CURIHAM 22 (30 de diciembre de 2016): 51–73. http://dx.doi.org/10.35305/curiham.v22i0.25.
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En este trabajo se presenta un estudio de los registros de caudales líquidos y sólidos del río Paraná, y la posterior aplicación de un modelo hidro-sedimentológico en el tramo Diamante-Ramallo, comprendiendo el cauce principal y la planicie de inundación, abarcando un área aproximada de 8100 km² del río Paraná Inferior. En primer lugar, se generaron los hidrogramas y sedimentogramas ingresantes al dominio modelado. La recopilación de registros de niveles hidrométricos y caudales (líquidos y sólidos) es una tarea necesaria, tanto para la generación de los ingresos en las simulaciones como para evaluar resultados. Se seleccionaron datos de caudales, publicados por la SSRH de la Nación, observados en el tramo medio del río Paraná, a la altura de la transecta Santa Fe-Paraná y en la zona de la confluencia de los ríos Bermejo-Paraguay-Paraná. Se plantearon diversas hipótesis de distribución de caudales para generar los hidrogramas de ingreso. Además, con los registros de transporte de sedimentos en suspensión, se generó un sedimentograma, que se propagó hasta el contorno aguas arriba del tramo modelado, y se lo contrastó con aforos sólidos disponibles en la zona. Posteriormente, se realizó la aplicación del modelo hidro-sedimentológico CTSS8-FLUSED, para el período Septiembre 2010-Agosto 2015. Los resultados de la modelación hidrodinámica son satisfactorios, lográndose una aceptable reproducción de caudales y niveles hidrométricos en los puntos de control. Los resultados de las deposiciones indican que las mismas variarían de 10 a 16×106 t/año dentro del área de estudio, siendo la eficiencia de atrape de la planicie aluvial entre el 21% al 43%.
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Hämmerly, Rosana, Carlos Ubaldo Paoli y Oscar Carlos Duarte. "Distribución de la precipitación y la evapotranspiración en territorio argentino de Cuenca del Plata". Cadernos do Laboratorio Xeolóxico de Laxe. Revista de Xeoloxía Galega e do Hercínico Peninsular 40 (21 de diciembre de 2018): 69–101. http://dx.doi.org/10.17979/cadlaxe.2018.40.0.4913.
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La planificación y gestión del territorio necesitan un acabado conocimiento de la disponibilidad de los recursos naturales, y el agua es uno de los más importantes. La determinación precisa del balance de agua y el agua disponible para diferentes usos requiere de una red bastante densa de mediciones hidrometeorológicas. La precipitación (P) y la evapotranspiración potencial (ETP) son dos términos del balance hídrico de mayor interés en varias disciplinas, incluida la hidrología, la climatología y la agronomía. Las redes de estaciones meteorológicas proporcionan datos de P y ETP, que son comúnmente usadas para la interpolación. Este trabajo analiza la distribución espacial y temporal de P y ETP en el territorio argentino de Cuenca del Plata. El análisis abarca el período 1970-2010 cuyos datos fueron proporcionados por el Servicio Meteorológico Nacional (SMN), la Subsecretaría de Recursos Hídricos de la Nación (SSRH) y el Instituto Nacional de Tecnología Agropecuaria (INTA). El estudio se realizó tanto a escala anual como mensual. Los datos faltantes se estimaron utilizando métodos convencionales. La pluviometría estaba disponible para 94 estaciones, mientras que la ETP se estimó a partir de datos meteorológicos en 38 estaciones, utilizando el método de Penman-Monteith. Los resultados mostraron tendencias para la distribución espacial y temporal de P y ETP. La precipitación media anual osciló entre 499 mm y 2077 mm. La mayor parte del área estudiada de la cuenca del Plata en Argentina es de planicie o llanuras, donde P muestra una fuerte tendencia a aumentar de este a oeste; sin embargo, al oeste de las llanuras, en la región de los Andes, P aumenta con la altitud. El promedio anual de ETP osciló entre 899 mm y 1719 mm. Generalmente, la ETP disminuye a medida que P aumenta, incluso si no hay una superposición total de los valores máximos y mínimos de estas dos variables. Posteriormente, en la región de Chaco Seco ubicada al oeste de la planicie, la ETP se vuelve más alta que P. El análisis de la variabilidad temporal de la precipitación anual en el período 1970-2010 mostró una clara tendencia creciente desde 1970 hasta 2000, seguida de una modesta tendencia decreciente entre 2000 y 2010. La información obtenida en este trabajo es muy importante para la gestión de los recursos hídricos y la planificación en la asignación del recurso, el modelado hidrológico, la evaluación de la recarga y la programación del riego.
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Kovilakam, Mahesh, Larry W. Thomason, Nicholas Ernest, Landon Rieger, Adam Bourassa y Luis Millán. "The Global Space-based Stratospheric Aerosol Climatology (version 2.0): 1979–2018". Earth System Science Data 12, n.º 4 (31 de octubre de 2020): 2607–34. http://dx.doi.org/10.5194/essd-12-2607-2020.
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Abstract. A robust stratospheric aerosol climate data record enables the depiction of the radiative forcing of this highly variable component of climate. In addition to the radiative forcing, stratospheric aerosol also plays a key role in the chemical processes leading to ozone depletion. Therefore, stratospheric aerosol is one of the crucial parameters in understanding climate change in the past and potential changes in the future. As a part of Stratospheric-tropospheric Processes and their Role in Climate (SPARC) Stratospheric Sulfur and its Role in Climate (SSiRC) activity, the Global Space-based Stratospheric Aerosol Climatology (GloSSAC) was created (Thomason et al., 2018) to support the World Climate Research Programme's (WCRP) Coupled Model Intercomparison Project Phase 6 (CMIP6) (Eyring et al., 2016). This data set is a follow-on to one created as a part of SPARC's Assessment of Stratospheric Aerosol Properties (ASAP) activity (SPARC, 2006) and a data created for the Chemistry-Climate Model Initiative (CCMI) in 2012 (Eyring and Lamarque, 2012). Herein, we discuss changes to the original release version including those as a part of v1.1 that was released in September 2018 that primarily corrects an error in the conversion of Cryogenic Limb Array Etalon Spectrometer (CLAES) data to Stratospheric Aerosol and Gas Experiment (SAGE) II wavelengths, as well as the new release, v2.0. Version 2.0 is focused on improving the post-SAGE II era (after 2005) with the goal of mitigating elevated aerosol extinction in the lower stratosphere at mid- and high latitudes noted in v1.0 as noted in Thomason et al. (2018). Changes include the use of version 7.0 of the Optical Spectrograph and InfraRed Imaging System (OSIRIS), the recently released Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) lidar Level 3 stratospheric aerosol profile monthly product and the new addition of SAGE III/ISS. Here, we use an observed relationship between (i) OSIRIS extinction at 750 nm and (ii) SAGE II and SAGE III/ISS extinction at 525 nm to derive an altitude–latitude-based monthly climatology of Ångström exponent to compute OSIRIS extinction at 525 nm, resulting in a better agreement between OSIRIS and SAGE measurements. We employ a similar approach to convert OSIRIS 750 nm extinction to 1020 nm extinction for the post-SAGE II period. Additionally, we incorporate the recently released standard CALIPSO stratospheric aerosol profile monthly product into GloSSAC with an improved conversion technique of the 532 nm backscatter coefficient to extinction using an observed relationship between OSIRIS 525 nm extinction and CALIPSO 532 nm backscatter. SAGE III/ISS data are also incorporated in GloSSAC to extend the climatology to the present and to test the approach used to correct OSIRIS/CALIPSO data. The GloSSAC v2.0 netCDF file is accessible at https://doi.org/10.5067/glossac-l3-v2.0 (Thomason, 2020).
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Li, Jun, Lijing Yang, Guyan Wang, Yuefu Wang, Chunrong Wang y Sheng Shi. "Severe systemic inflammatory response syndrome in patients following Total aortic arch replacement with deep hypothermic circulatory arrest". Journal of Cardiothoracic Surgery 14, n.º 1 (diciembre de 2019). http://dx.doi.org/10.1186/s13019-019-1027-3.
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Abstract Background This cohort study aims to retrospectively investigate the incidence of severe systemic inflammatory response syndrome (sSIRS) in patients following total aortic arch replacement (TAR) under deep hypothermic circulatory arrest (DHCA) with selective cerebral perfusion and its effect on clinical outcomes. Methods All patients who underwent TAR with DHCA were consecutively enrolled from January 2013 until December 2015 at our institute. sSIRS was diagnosed between 12 and 48 h postoperatively if patients met all four criteria of the SIRS definition. Results Of the 522 patients undergoing TAR with DHCA, 31.4% developed sSIRS. Patients aged under 60 yr were characterized by a higher prevalence of sSIRS (OR = 2.93; 95% CI 2.01–4.28; P <0.001). Higher baseline serum creatinine (OR = 1.61; 95% CI 1.18–2.20; P = 0.003), concomitant coronary disease (OR = 2.00; 95% CI 1.15–3.48; P = 0.015) and extended cardiopulmonary time (OR = 1.63; 95% CI 1.23–2.18; P = 0.001) independently contributed to a greater likelihood of postoperative sSIRS onset, while the preferred administration of ulinastatin (OR = 0.69; 95% CI 0.51–0.93; P = 0.015) and dexmedetomidine (OR = 0.36; 95% CI 0.23–0.56; P < 0.001) attenuated it. Patients with sSIRS had a greater risk of developing postoperative major adverse complications compared with the no sSIRS group [56.7%(93/164) vs 26.8% (96/358), P < 0.001]. sSIRS was found to be a significant risk factor for major adverse complications (OR, 4.52; 95% CI, 3.40–6.01; P < 0.001). A significant difference was revealed in in-hospital death following TAR between the sSIRS group and the no-sSIRS group [4.88% (8/164) vs 1.12% (4/358), P = 0.019]. The Kaplan-Meier curve indicated that the time to discharge from the intensive care unit was significantly prolonged in the sSIRS group compared with patients without it (log-rank p < 0.001). Conclusions sSIRS occurs commonly in patients following TAR with DHCA. There is an inverse association between age and sSIRS onset, whereby age over 60 yr can lower the risk of it. sSIRS development can increase the likelihood of major postoperative major adverse events.
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Wu, Jun, Xinguo Sun, Qingyuan Liu, Maogui Li, Shanwen Chen, Jiantao Wang, Youquan Wang et al. "Surgical treatment for antiplatelet intracerebral hemorrhage (SAP-ICH): protocol for a prospective cohort study of emergency surgery for severe spontaneous intracerebral hemorrhage patients on long-term oral antiplatelet treatment". Chinese Neurosurgical Journal 7, n.º 1 (11 de enero de 2021). http://dx.doi.org/10.1186/s41016-020-00225-x.
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Abstract Background Despite the capability of emergency surgery to reduce the mortality of severe spontaneous intracranial hemorrhage (SSICH) patients, the effect and safety of surgical treatment for severe spontaneous intracranial hemorrhage (SSICH) patients receiving long-term oral antiplatelet treatment (LOAPT) remains unclear. In consideration of this, the cohort study is aimed at figuring out the effect and safety of emergency surgery for SSICH patients on LOAPT. Methods As a multicenter and prospective cohort study, it will be conducted across 7 representative clinical centers. Starting in September 2019, the observation is scheduled to be completed by December 2022, with a total of 450 SSICH patients recruited. The information on clinical, radiological, and laboratory practices will be recorded objectively. All of the patients will be monitored until death or 6 months after the occurrence of primary hemorrhage. Results In this study, two comparative cohorts and an observational cohort will be set up. The primary outcome is the effect of emergency surgery, which is subject to assessment using the total mortality and comparison in the survival rate of SSICH patients on LOAPT between surgical treatment and conservative treatment. The second outcome is the safety of surgery, with the postoperative hemorrhagic complication which is compared between the operated SSICH patients on and not on LOAPT. Based on the observation of the characteristics and outcome of SSICH patients on LOAPT, the ischemic events after discontinuing LOAPT will be further addressed, and the coagulation function assessment system for operated SSICH patients on LOAPT will be established. Conclusions In this study, we will investigate the effect and safety of emergency surgery for SSICH patients on LOAPT, which will provide an evidence for management in the future. Ethics and dissemination The research protocol and informed consent in this study were approved by the Institutional Review Board of Beijing Tiantan Hospital (KY2019-096-02). The results of this study are expected to be disseminated in peer-reviewed journals in 2023. Trial registration Name: Effect and safety of surgical intervention for severe spontaneous intracerebral hemorrhage patients on long-term oral antiplatelet treatment. ChiCTR1900024406. Date of registration is July 10, 2019.
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Wu, Jun, Xinguo Sun, Qingyuan Liu, Maogui Li, Shanwen Chen, Jiantao Wang, Youquan Wang et al. "Surgical treatment for antiplatelet intracerebral hemorrhage (SAP-ICH): protocol for a prospective cohort study of emergency surgery for severe spontaneous intracerebral hemorrhage patients on long-term oral antiplatelet treatment". Chinese Neurosurgical Journal 7, n.º 1 (11 de enero de 2021). http://dx.doi.org/10.1186/s41016-020-00225-x.
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Abstract Background Despite the capability of emergency surgery to reduce the mortality of severe spontaneous intracranial hemorrhage (SSICH) patients, the effect and safety of surgical treatment for severe spontaneous intracranial hemorrhage (SSICH) patients receiving long-term oral antiplatelet treatment (LOAPT) remains unclear. In consideration of this, the cohort study is aimed at figuring out the effect and safety of emergency surgery for SSICH patients on LOAPT. Methods As a multicenter and prospective cohort study, it will be conducted across 7 representative clinical centers. Starting in September 2019, the observation is scheduled to be completed by December 2022, with a total of 450 SSICH patients recruited. The information on clinical, radiological, and laboratory practices will be recorded objectively. All of the patients will be monitored until death or 6 months after the occurrence of primary hemorrhage. Results In this study, two comparative cohorts and an observational cohort will be set up. The primary outcome is the effect of emergency surgery, which is subject to assessment using the total mortality and comparison in the survival rate of SSICH patients on LOAPT between surgical treatment and conservative treatment. The second outcome is the safety of surgery, with the postoperative hemorrhagic complication which is compared between the operated SSICH patients on and not on LOAPT. Based on the observation of the characteristics and outcome of SSICH patients on LOAPT, the ischemic events after discontinuing LOAPT will be further addressed, and the coagulation function assessment system for operated SSICH patients on LOAPT will be established. Conclusions In this study, we will investigate the effect and safety of emergency surgery for SSICH patients on LOAPT, which will provide an evidence for management in the future. Ethics and dissemination The research protocol and informed consent in this study were approved by the Institutional Review Board of Beijing Tiantan Hospital (KY2019-096-02). The results of this study are expected to be disseminated in peer-reviewed journals in 2023. Trial registration Name: Effect and safety of surgical intervention for severe spontaneous intracerebral hemorrhage patients on long-term oral antiplatelet treatment. ChiCTR1900024406. Date of registration is July 10, 2019.
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Du, Yingjie, Zhongrong Fang, Yanhua Sun, Congya Zhang, Guiyu Lei, Yimeng Chen, Lijing Yang, Xiying Yang, Jun Li y Guyan Wang. "Moderate and Deep Hypothermic Circulatory Arrest Have Comparable Effects on Severe Systemic Inflammatory Response Syndrome After Total Aortic Arch Replacement in Patients With Type A Aortic Dissection". Frontiers in Surgery 8 (6 de diciembre de 2021). http://dx.doi.org/10.3389/fsurg.2021.758854.
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Background: The objective of this study was to compare the incidence of severe systemic inflammatory response syndrome (sSIRS) after total aortic arch replacement between patients who underwent moderate hypothermic circulatory arrest (MHCA) and those who underwent deep hypothermic circulatory arrest (DHCA).Methods: At Fuwai Hospital, 600 patients who underwent total aortic arch replacement with MHCA or DHCA from January 2013 to December 2016 were consecutively enrolled and divided into DHCA (14.1–20.0°C) and MHCA (20.1–28.0°C) groups. Preliminary statistical analysis revealed that some baseline indicators differed between the two groups; therefore, propensity score matching (PSM) was used to balance the covariates. Post-operative sSIRS as the primary outcome was compared between the groups both before and after PSM.Results: A total of 275 (45.8%) patients underwent MHCA, and 325 (54.2%) patients underwent DHCA. After PSM analysis, a total of 191 matched pairs were obtained. The overall incidence of sSIRS was 27.3%. There was no significant difference in post-operative sSIRS between the MHCA group and the DHCA group in either the overall cohort or the PSM cohort (no-PSM: P = 0.188; PSM: P = 0.416); however, post-operative sSIRS was increased by ~4% in the DHCA group compared with the MHCA group in both the no-PSM and PSM cohorts (no-PSM: 29.5 vs. 24.7%; PSM: 29.3 vs. 25.1%). Both before and after PSM, the rates of gastrointestinal hemorrhage and pulmonary infection and post-operative length of stay were significantly increased in the DHCA group compared with the MHCA group (P < 0.05), and the remaining secondary outcomes were not significantly different between the groups.Conclusions: MHCA and DHCA are associated with comparable incidences of sSIRS in patients following total aortic arch replacement for type A aortic dissection. However, the MHCA group had a shorter cardiopulmonary bypass time, a shorter post-operative length of stay and lower pulmonary infection and gastrointestinal hemorrhage rates than the DHCA group. We cautiously recommend the use of MHCA for most total arch replacements in patients with type A aortic dissection.
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von Richthofen, Helen J., Geertje H. A. Westerlaken, Doron Gollnast, Sjanna Besteman, Eveline M. Delemarre, Karlijn Rodenburg, Petra Moerer et al. "Soluble Signal Inhibitory Receptor on Leukocytes-1 Is Released from Activated Neutrophils by Proteinase 3 Cleavage". Journal of Immunology, 11 de enero de 2023. http://dx.doi.org/10.4049/jimmunol.2200169.
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Abstract Signal inhibitory receptor on leukocytes-1 (SIRL-1) is an immune inhibitory receptor expressed on human granulocytes and monocytes that dampens antimicrobial functions. We previously showed that sputum neutrophils from infants with severe respiratory syncytial virus (RSV) bronchiolitis have decreased SIRL-1 surface expression compared with blood neutrophils and that SIRL-1 surface expression is rapidly lost from in vitro activated neutrophils. This led us to hypothesize that activated neutrophils lose SIRL-1 by ectodomain shedding. Here, we developed an ELISA and measured the concentration of soluble SIRL-1 (sSIRL-1) in patients with RSV bronchiolitis and hospitalized patients with COVID-19, which are both characterized by neutrophilic inflammation. In line with our hypothesis, sSIRL-1 concentration was increased in sputum compared with plasma of patients with RSV bronchiolitis and in serum of hospitalized patients with COVID-19 compared with control serum. In addition, we show that in vitro activated neutrophils release sSIRL-1 by proteolytic cleavage and that this diminishes the ability to inhibit neutrophilic reactive oxygen species production via SIRL-1. Finally, we found that SIRL-1 shedding is prevented by proteinase 3 inhibition and by extracellular adherence protein from Staphylococcus aureus. Notably, we recently showed that SIRL-1 is activated by PSMα3 from S. aureus, suggesting that S. aureus may counteract SIRL-1 shedding to benefit from preserved inhibitory function of SIRL-1. In conclusion, we report that SIRL-1 is released from activated neutrophils by proteinase 3 cleavage and that endogenous sSIRL-1 protein is present in vivo.
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Wang, Kaiwen, Shaohua Mo, Qingyuan Liu, Jun Pu, Xiaobin Huang, Dezhi Kang, Fixin Lin et al. "Early-start antiplatelet therapy after operation in patients with spontaneous intracerebral hemorrhage and high risk of ischemic events (E-start): Protocol for a multi-centered, prospective, open-label, blinded endpoint randomized controlled trial". Frontiers in Aging Neuroscience 14 (23 de noviembre de 2022). http://dx.doi.org/10.3389/fnagi.2022.1020224.
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BackgroundFor severe spontaneous intracerebral hemorrhage (sSICH) patients with high risk of ischemic events, the incidence of postoperative major cardiovascular/cerebrovascular and peripheral vascular events (MACCPE) is notable. Although antiplatelet therapy is a potential way to benefit these patients, the severe hemorrhagic complications, e.g., intracranial re-hemorrhage, is a barrier for early starting antiplatelet therapy.ObjectivesThis randomized controlled trial aims to identify the benefit and safety of early starting antiplatelet therapy after operation for sSICH patients with high risk of ischemic events.MethodsThis study is a multicenter, prospective, randomized, open-label, blinded-endpoint trial. We will enroll 250 sSICH patients with a high risk of ischemic events (including cerebral infarcts, transient ischemic attack, myocardial infarction, pulmonary embolism, and deep venous thrombosis). The participants will be randomized in a 1:1 manner to early-start group (start antiplatelet therapy at 3 days after operation) and normal-start group (start antiplatelet therapy at 30 days after operation). The early-start group will receive aspirin 100 mg daily. The control group will not receive antithrombotic therapy until 30 days after operation. The efficacy endpoint is the incidence of MACCPE, and the safety endpoint is the incidence of intracranial re-hemorrhage.DiscussionThe Early-Start antiplatelet therapy after operation in patients with spontaneous intracerebral hemorrhage trial (E-start) is the first randomized trial about early start antiplatelet therapy for operated sSICH patients with a high risk of ischemic events. This study will provide a new strategy and evidence for postoperative management in the future.Clinical trial registrationClinicalTrials.gov, identifier NCT04820972; Available at: https://clinicaltrials.gov/ct2/show/NCT04820972?term=NCT04820972&draw=2&rank=1.Chinese Clinical Trial Registry, identifier ChiCTR2100044560; Available at: http://www.chictr.org.cn/showproj.aspx?proj=123277.
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Perron, Vincent, Paolo Bergamo y Donat Fäh. "Site Amplification at High Spatial Resolution from Combined Ambient Noise and Earthquake Recordings in Sion, Switzerland". Seismological Research Letters, 25 de mayo de 2022. http://dx.doi.org/10.1785/0220210289.
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Abstract Earthquake site effects have a major impact on the seismic hazard. However, evaluating the site response over a broad frequency range and with a high spatial resolution remains difficult. Therefore, there is a high demand from the engineering seismology community in having cost-effective and reliable approaches to evaluate the site response. Empirical site effect assessment has shown good reliability up to high frequencies but relies on earthquake recordings that require long station deployments. In contrast, seismic ambient noise can be rapidly recorded anywhere at any time. The hybrid standard spectral ratio (SSRh) combines both the spectral ratio from earthquake recordings at a few sites and the spectral ratio from ambient noise recordings at many sites from short duration deployments. The objective of our study is to evaluate the applicability of the SSRh to a large urban area. Our studied area is the Rhône valley around the city of Sion (Switzerland), which is prone to complex 2D and 3D site effects in a broad frequency range caused by the soft, thick, and variable sedimentary deposit of the Rhône river. We benefit from four permanent and five long-term seismic stations present in the area, and we performed 299 short ambient noise measurements on a regular 300 m side grid. At the permanent stations, we find good agreement between the SSRh and the empirical amplification function estimates using earthquake observations, and we observe a good stability of the SSRh over time, frequency, and space, despite the strong variability of the ambient noise. Based on that, we estimate the SSRh for every ambient noise recording point in the area to compute a high-resolution amplification model and subsequently a site-specific seismic hazard model for the Sion area. Our models are in good agreement with the geological information.
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Hu, He-he, Xiao-yu Zhu, Zheng-gao Xie y Fang Chen. "Multimodal imaging of spontaneous subretinal hemorrhage in a young male: a case report". BMC Ophthalmology 20, n.º 1 (22 de septiembre de 2020). http://dx.doi.org/10.1186/s12886-020-01634-3.
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Abstract Background Spontaneous subretinal hemorrhage (SSRH) is a rare disease that severely affects the visual function, and is difficult to diagnose. This study aimed to describe the multimodality imaging characteristics of SSRH in a young male patient. Case presentation A 28-year-old male was presented to our hospital with “sudden drop of left eye vision for one week.” Three weeks ago, he was admitted to other hospital due to sudden severe pain and unclear vision in the left eye for 1 h. The intraocular pressure was 69 mmHg, and the blood pressure was 230/120 mmHg. Skull CT and MRI detected abnormal signal shadows in the left eye and no abnormalities in the brain. B-ultrasonography indicated occupying lesions in the left eye. Two weeks later, the patient came to our hospital for treatment as the vision of the left eye had decreased sharply. Admission examination: blood pressure was 200/120 mmHg, best-corrected visual acuity was 20/20 in the right eye and hand motion in the left eye. Fundus details could not be evaluated in the left eye because of hemorrhage in the vitreous cavity. B-ultrasonography of the left eye revealed a dense, diffuse intravitreal hemorrhage. Skull MRI showed an abnormal signal shadow in the left eyeball, suggesting intraocular hemorrhage. Vitrectomy revealed a dome-shaped lesion in the peripheral part of the inferotemporal region during the operation. Postoperative indocyanine green angiography (ICGA) of the lesion showed hypofluorescence and no leakage or altered morphology during the whole imaging process. Follow-up showed gradual reabsorption of SSRH. Conclusions In this case, SSRH was considered to be associated with high blood pressure. Multimodal imaging provides accurate data for the diagnosis and follow-up of the disease.
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Viviana Lori. "Mathematical Quad Cross-Stub Stepped Impedance Resonator Application". Mathematical Statistician and Engineering Applications 70, n.º 1 (31 de enero de 2021). http://dx.doi.org/10.17762/msea.v70i1.6.
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This simulation study involved the use of a QC-SSIR (quad cross-tub stepped impedance resonator) to examine the behavior and performance of the MW-BPF (multi-wideband band pass filter). To evaluate the performance of the proposed model, it was compared to the case of the conventional resonator. In the results, MW-BPF was found o exhibit a superior performance in terms of the ease of fabrication, good transmission coefficients, and a wider fractional bandwidth. For the filter structure analysis, this study incorporated the ABCD matrix, with the design of the MW-BPF also based on the FR4 microstrip. The experimental conditions and parameters were set in such a way that for the substrate, tan = 0.0265, thickness = 1.6 mm, and r = 4.4, and thickness h = 1.6 mm. at 2.58GHz, 1.71 GHz, and 0.81 GHz, the proposed QC-SSIR-based MW-BPF achieved transmission coefficients/fractional bandwidths of 1.93dB/13.9%, 1.49dB/18.7%, and 0.60dB/49.3%, respectively. Relative to the filter size reduction, the FQC-SSIR (folded quad cross-tub impedance resonator) was incorporated. The resultant observations indicated a possibility of BPF size reduction up to 46%. Also, the proposed framework was found to yield (at 2.62, 1.80, and 0.82 GHz) 1.76dB/12.5%, 1.21dB/17.7%, and 0.57dB/49.6% transmission coefficient/fractional bandwidths, respectively. It is also worth indicating that the filter employed LTE2600, WCDMA1800, and GSM800.
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Meena, Archana y K. S. Rao. "Assessment of soil microbial and enzyme activity in the rhizosphere zone under different land use/cover of a semiarid region, India". Ecological Processes 10, n.º 1 (1 de marzo de 2021). http://dx.doi.org/10.1186/s13717-021-00288-3.
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Abstract Background Land use/cover and management practices are widely known to influence soil organic matter (SOM) quality and quantity. The present study investigated the effect of different land use, i.e., forests viz. mixed forest cover (MFC), Prosopis juliflora (Sw.) DC-dominated forest cover (PFC), and cultivated sites viz. agriculture field (AF), vegetable field (VF), respectively, on soil parameter, microbial activity, and enzymes involved in soil nutrient cycle in a semiarid region of India. Results The results showed a significant reduction (P < 0.05) in soil carbon (SC), soil nitrogen (SN) content (~ 30–80%) and consequently the soil microbial biomass carbon (SMBC) (~ 70–80%), soil basal respiration (SBR), soil substrate-induced respiration (SSIR), and soil enzyme activities (β-glucosidase, acid phosphatase, and dehydrogenase) under cultivated sites in comparison with forest sites. Pearson’s correlation showed that a positive correlation of SC with SMBC, SBR, SSIR (P < 0.01), and enzymatic activities (i.e., β-glucosidase, dehydrogenase) (P < 0.05) may imply the critical role of SC in regulating microbial and enzymatic activity. Also, a positive correlation of soil moisture with urease activity (P < 0.01) was found suggesting it as a significant abiotic factor for soil biological functions. Additionally, based on the PCA analysis, we observed the clustering of SMBC/SC ratio and qCO2 nearby AF. Conclusion Our study suggests that soil microbial parameters (SMBC, SBR, SSIR, SMBC/SC, qCO2) and enzyme activity are key indicators of soil health and fertility. Land use/cover alters the SOM content and soil microbial functions. The management strategies focusing on the conservation of natural forest and minimizing the land disturbances will be effective in preventing soil carbon flux as CO2 and maintaining the SC stock.