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Journal articles on the topic 'S-ratios'

Author: Grafiati

Published: 21 April 2022

Last updated: 30 July 2025

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1

Morse, John W., and Robert A. Berner. "What determines sedimentary C/S ratios?" Geochimica et Cosmochimica Acta 59, no. 6 (1995): 1073–77. http://dx.doi.org/10.1016/0016-7037(95)00024-t.

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2

Doolan, Daniel. "Keeping watch: California???s staffing ratios." Nursing Management (Springhouse) 36, no. 7 (2005): 36–40. http://dx.doi.org/10.1097/00006247-200507000-00009.

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3

Dufton, P. L., A. Hibbert, F. P. Keenan, A. E. Kingston, and G. A. Doschek. "S V line ratios in the sun." Astrophysical Journal 300 (January 1986): 448. http://dx.doi.org/10.1086/163819.

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4

Robertson, James D. "Carbonate porosity from S/P traveltime ratios." GEOPHYSICS 52, no. 10 (1987): 1346–54. http://dx.doi.org/10.1190/1.1442247.

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A twenty‐mile S‐wave seismic line was acquired on the northeastern shelf of the Anadarko basin by the 1977–1978 Conoco P‐Wave/S‐Wave Group Shoot. The resolution of the S‐wave section is at least as good as the resolution of a coincident P‐wave section acquired in 1975. The top and bottom of a collection of Paleozoic carbonates called the Hunton group can be identified on both sets of data. P and S traveltimes and traveltime ratios delineate lateral variations in the thickness and average porosity of the Hunton. Where the pore space is saturated with liquid, a systematic increase in average por

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5

Keenan, F. P., V. J. Foster, E. S. Conlon, K. M. Aggarwal, and K. G. Widing. "S XI line ratios in the sun." Astrophysical Journal 413 (August 1993): 826. http://dx.doi.org/10.1086/173049.

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6

Spetz, Joanne. "California??s Minimum Nurse-to-Patient Ratios." JONA: The Journal of Nursing Administration 34, no. 12 (2004): 571???578. http://dx.doi.org/10.1097/00005110-200412000-00007.

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7

Moon, Amy Elizabeth. "Using S/D Ratios to Predict Fetal Outcome." Journal of Diagnostic Medical Sonography 15, no. 2 (1999): 59–64. http://dx.doi.org/10.1177/875647939901500201.

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8

Wallerstein, G., B. Balick, J. Alcolea, V. Bujarrabal, and A. D. Vanture. "Carbon isotopic abundance ratios in S-type stars." Astronomy & Astrophysics 535 (November 2011): A101. http://dx.doi.org/10.1051/0004-6361/201015280.

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9

McCulloch, J. C., R. Waisberg, J. M. Kuyl, and D. Mendelsohn. "Ethanolic Bromothymol Blue Gives Molar L/S Ratios." Annals of Clinical Biochemistry: International Journal of Laboratory Medicine 24, no. 2 (1987): 213–14. http://dx.doi.org/10.1177/000456328702400220.

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10

McCann, S. M., and F. P. Keenan. "S XV emission-line ratios in the sun." Astrophysical Journal 328 (May 1988): 344. http://dx.doi.org/10.1086/166296.

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11

Manninen, Sirkku, Satu Huttunen, and Paavo Perämäki. "Needle S fractions and S to N ratios as indices of SO2 deposition." Water, Air, & Soil Pollution 95, no. 1-4 (1997): 277–98. http://dx.doi.org/10.1007/bf02406170.

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12

Ross, John W., Alexandria Betz, Michael J. Paglia, Wen Feng, A. George Neubert, and A. Dhanya Mackeen. "Short- and Long-Term Growth as a Function of Abnormal Doppler Flow in Growth-Restricted Fetuses." Prenatal Cardiology 8, no. 1 (2018): 76–79. http://dx.doi.org/10.1515/pcard-2018-0012.

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Abstract OBJECTIVES: To evaluate short- and long-term growth in fetuses with growth restriction (FGR) and elevated umbilical artery Doppler (UAD) systolic/diastolic (S/D) ratios. METHODS: In this prospective observational study, two UAD waveforms were obtained from each umbilical artery weekly and were classified as normal or abnormal. Fetal growth was assessed every 3 weeks. Short-term growth was calculated from the first visit with elevated ratios until next growth assessment. Results were grouped by number of initial elevated S/D ratios (maximum, 4). Long-term growth was evaluated by change

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13

Morse, J. W., and K. C. Emeis. "Controls on C/S ratios in hemipelagic upwelling sediments." American Journal of Science 290, no. 10 (1990): 1117–35. http://dx.doi.org/10.2475/ajs.290.10.1117.

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14

Mueller, Peter B., George W. Larson, and Patricia A. Summers. "Additional Data on S/Z Ratios in Kindergarten Children." Language, Speech, and Hearing Services in Schools 24, no. 3 (1993): 177–78. http://dx.doi.org/10.1044/0161-1461.2403.177.

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15

Allen, Dinah M., Sean G. Ryan, Silvia Rossi, and Stelios A. Tsangarides. "s/r ratios in carbon-enhanced metal-poor stars." Proceedings of the International Astronomical Union 5, S265 (2009): 118–19. http://dx.doi.org/10.1017/s1743921310000335.

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AbstractWe present the results of [Ba/Eu] ratio determinations for a sample of Carbon-Enhanced Metal Poor (CEMP) stars, comparing them with other CEMP stars found in the literature for which abundances for both elements are available. The stellar spectra were observed at 4.2m William Herschel Telescope (WHT) on July/2003, using Utrecht Echelle Spectrograph (UES) with R ~ 52000 and S/N ~ 40. WHT covers a wavelength range of λλ3700-5700.

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16

Nakajima, Takahiro, Hidetoshi Nakamura, Caroline A. Owen, et al. "Plasma Cathepsin S and Cathepsin S/Cystatin C Ratios Are Potential Biomarkers for COPD." Disease Markers 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/4093870.

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Purpose. This study aimed to examine whether plasma levels of cathepsin S or its inhibitor, cystatin C, may serve as biomarkers for COPD.Patients and Methods. We measured anthropometrics and performed pulmonary function tests and chest CT scans on 94 patients with COPD and 31 subjects with productive cough but no airflow obstruction (“at risk”; AR). In these subjects and in 52 healthy nonsmokers (NS) and 66 healthy smokers (HS) we measured plasma concentrations of cathepsin S and cystatin C using an ELISA. Data were analyzed using simple and logistic regression and receiver operating character

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17

Geng, Ji Chuan, Kun Ni, Shan Qi Fang, Yun Xing Shi, Yi Ning Ding, and Yan Gang Zhang. "The Effect of Sand/Cement Ratio and Cement Grade on the Compressive Strength of Foam Concrete." Applied Mechanics and Materials 405-408 (September 2013): 2933–37. http://dx.doi.org/10.4028/www.scientific.net/amm.405-408.2933.

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A series of experiments have been undertaken to investigate the effects, on compressive strength, of variable sand/cement ratios and cement grade. Ten mixtures of different s/c ratios used two kinds of cement were cast and the compressive strength at different curing ages was tested. The results indicate that the compressive strength gets lower as the s/c ratio increases for both 42.5R and 32.5R cement. For the mixtures used 32.5R cement, the 28-day compressive strength is pretty low for the s/c ratios of 1.5 and 2. The specimens used 42.5R cement have higher compressive strength than those wi

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18

Abbott, B., M. Abolins, V. Abramov, et al. "Ratios of Multijet Cross Sections inpp¯Collisions at√s=1.8TeV." Physical Review Letters 86, no. 10 (2001): 1955–60. http://dx.doi.org/10.1103/physrevlett.86.1955.

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19

Çelik, Cengiz. "Wolf ratios and the ionospheric L and S dynamo region." Journal of Atmospheric and Solar-Terrestrial Physics 173 (August 2018): 23–27. http://dx.doi.org/10.1016/j.jastp.2018.04.002.

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20

Hussain, Muhammad, Bahadar Shah Dr., ul Islam Zia, Waqas M., and Khan Dawood. "Comparative Evaluation of Financial Performance of Pakistan Tobacco Company (PTC) and Philip Morris Pakistan Limited (PMPKL) through Ratio Analysis." International Journal of Management Sciences and Business Research 3, no. 1 (2014): 146–56. https://doi.org/10.5281/zenodo.3445939.

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Financial ratio’s play a significant role in analyzing firm’s financial performance. These ratio’s are usually used to summarize the information in a firm’s financial statements, analyzing and evaluating its financial position. This study was based on secondary data collected from selected companies of Tobacco Industry in Pakistan for the period of 2008-2012. The main objective of the study was to compare financial performance of two leading companies, Pakistan Tobacco Company (PTC) and Philip Morris Pakistan Limited (PMPKL). Further, this study used various financial r

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21

Siatras, Theophanis, Dimitra Mameletzi, and Spiros Kellis. "Knee Flexor: Extensor Isokinetic Ratios in Young Male Gymnasts and Swimmers." Pediatric Exercise Science 16, no. 1 (2004): 37–43. http://dx.doi.org/10.1123/pes.16.1.37.

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The purpose of the study was to determine young male gymnasts’ and swimmers’ knee flexor:extensor (F:E) ratios during isokinetic testing at different velocities. Nine gymnasts (10.3 ± 0.5 years) and 14 swimmers (10.5 ± 0.5 years) participated. Concentric isokinetic peak torque was measured by a Cybex® Norm dynamometer at different angular velocities (60,120, and 180°/s) during unilateral knee extensions and flexions after gravity correction. Significant differences were found only in gymnasts’ knee F:E peak-torque ratios between the angular velocities of 60 and 120°/s (p < 0.01), as well as

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22

SANTIAGO, W. C., H. M. KROETZ, and A. T. BECK. "Reliability-based calibration of Brazilian structural design codes used in the design of concrete structures." Revista IBRACON de Estruturas e Materiais 12, no. 6 (2019): 1288–304. http://dx.doi.org/10.1590/s1983-41952019000600004.

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Abstract This paper presents a reliability-based calibration of partial safety factors for Brazilian codes used in the design of concrete structures. The work is based on reliability theory, which allows an explicit representation of the uncertainties involved in terms of resistances and loads. Regarding the resistances, this study considers beams with concrete of five classes (C20, C30, C40, C50 and C60), three ratios between base and effective depth (0.25, 0.50 and 0.75), three longitudinal reinforcement ratios (ρmin, 0.5% and ρmax) and three transverse reinforcement ratios ( A s s m i n, 5

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23

Weber, Daša, Ajda Hrastnik, and Alan Kacin. "Comparison of the Isokinetic Torque Ratios and the Ratios of the Tensiomyographic Parameters of the Knee Muscles in Healthy Young Adults." Applied Sciences 15, no. 11 (2025): 6261. https://doi.org/10.3390/app15116261.

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Isokinetic dynamometry is considered the gold standard for assessing muscle strength ratios, whereas tensiomyography (TMG) has emerged as a promising tool for rapid assessment of involuntary muscle contractility. However, the validity of TMG-derived ratios for evaluating muscle balance around the knee remains unclear. The aim of this study was to examine the associations between various TMG-derived ratios of knee muscles and isokinetic torque ratios. Time- and amplitude-related TMG parameters, along with peak isokinetic torques at 60°/s, 180°/s, and 240°/s, were assessed in a sample of 30 heal

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24

Yilmaz, Ali Kerim, Coskun Yilmaz, Muhammet Hakan Mayda, et al. "Correlation of bilateral and ipsilateral strength ratios with balance in female taekwondo athletes." Revista de Artes Marciales Asiáticas 16, no. 2 (2021): 67. http://dx.doi.org/10.18002/rama.v16i2.6486.

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<p>This study aimed to analyze preferred leg (PLs) and non-preferred leg (NPLs) isokinetic knee strength, lateral asymmetry ratios and to examine their correlation with static balance. Sixteen female taekwondo (TKD) athletes voluntarily participated in the study. Knee isokinetic extension (Ex) and flexion (Flx) strength were measured in concentric / concentric (Con / Con) contractions at angular velocities of 60°/s, 180°/s, and 240°/s. Ipsilateral hamstring / quadriceps (H/Q) and bilateral (H/H and Q /Q) ratios were calculated. Static balances were determined by taking the center of body

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25

Chang-Jian, C.-W., and C.-K. Chen. "Non-linear dynamic analysis of bearing—rotor system lubricating with couple stress fluid." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 222, no. 4 (2008): 599–616. http://dx.doi.org/10.1243/09544062jmes814.

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The current study performs a dynamic analysis of a rotor supported by two couple stress fluid film journal bearings with non-linear suspension. The dynamics of the rotor centre and bearing centre are studied. The analysis of the rotor—bearing system is investigated under the assumptions of a couple-stress lubricant and a short journal bearing approximation. The displacements in the horizontal and vertical directions are considered for various non-dimensional speed ratios. The analysis methods employed in this study include the dynamic trajectories of the rotor centre and the bearing centre, Po

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26

Sacchi, E., M. Pinotti, G. Marchetti, et al. "Protein S mRNA in Patients with Protein S Deficiency." Thrombosis and Haemostasis 73, no. 05 (1995): 746–49. http://dx.doi.org/10.1055/s-0038-1653862.

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SummaryA protein S gene polymorphism, detectable by restriction analysis (BstXI) of amplified exonic sequences (exon 15), was studied in seven Italian families with protein S deficiency. In the 17 individuals heterozygous for the polymorphism the study was extended to platelet mRNA through reverse transcription, amplification and densitometric analysis. mRNA produced by the putative defective protein S genes was absent in three families and reduced to a different extent (as expressed by altered allelic ratios) in four families. The allelic ratios helped to distinguish total protein S deficienc

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27

Aydın, Murat, and Tuğba Yılmaz Aydın. "Auxeticity and Wood." Drvna industrija 76, no. 1 (2025): 21–32. https://doi.org/10.5552/drvind.2025.0219.

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Poisson&rsquo;s ratio, one of the elastic constants, describes the ratio of lateral strain to axial strain when a material is subjected to stress. The range of Poisson&rsquo;s ratios greatly varies in terms of material types and their structures. Furthermore, some materials present negative Poisson&rsquo;s ratios which are attributed to auxeticity. Wood material has six Poisson&rsquo;s ratios corresponding to the neighboring planes of the essential axes of Longitudinal, Radial, and Tangential. Due to the polar orthotropic nature of wood, six of them are different, and generally

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28

Regelous, Anette, Lars Scharfenberg, and Helga De Wall. "Origin of S-, A- and I-Type Granites: Petrogenetic Evidence from Whole Rock Th/U Ratio Variations." Minerals 11, no. 7 (2021): 672. http://dx.doi.org/10.3390/min11070672.

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The origin and evolution of granites remain a matter of debate and several approaches have been made to distinguish between different granite types. Overall, granite classification schemes based on element concentrations and ratios, tectonic settings or the source rocks (I-, A-, S-type) are widely used, but so far, no systematic large-scale study on Th/U ratio variations in granites based on their source or tectonic setting has been carried out, even though these elements show very similar behavior during melting and subsequent processes. We therefore present a compiled study, demonstrating an

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29

Critello, Costantino Davide, Antonino S. Fiorillo, Maria Chiara Cristiano, Stefano de Franciscis, and Raffaele Serra. "Effects of sulodexide on stability of sclerosing foams." Phlebology: The Journal of Venous Disease 34, no. 3 (2018): 191–200. http://dx.doi.org/10.1177/0268355518779844.

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Background and objectives Foam sclerotherapy is a clinical procedure for the treatment of unhealthy veins. The aim of this study was to investigate the effect of sulodexide (SUL) on stability of foams prepared using polidocanol (POL) and sodium tetradecyl sulfate (STS) detergents, more specifically with 0.25% aethoxysclerol and 0.2% Fibro-Vein sclerosing solutions. Methods Foams were produced by the Tessari method using three different weight ratios of POL-SUL and STS-SUL (1:0, 1:1, and 1:3). Results The half-life of STS foams resulted as follows: 82 ± 1.6 s, 101.8 ± 2.6 s, and 109.7 ± 2.1 s f

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30

Fitriadhy, Ahmad, Sun Yin Lim, and Adi Maimun. "Prediction of an Optimum Total Resistance Coefficient on Catamaran using Design of Experiment (DOE) Incorporated with CFD Approach." EPI International Journal of Engineering 3, no. 1 (2020): 74–83. http://dx.doi.org/10.25042/epi-ije.022020.11.

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In presence of complex hydrodynamic interferences between two demihulls on a catamaran ship has been prone to have a reliable prediction to her optimum total resistance. To achieve this, the author presents a Computational Fluid Dynamic (CFD) modelling incorporated with Design of Experiment (DOE) approach. Several parameters such as effect of Froude number ( ) with respect to various lateral separation ratios (S/L) of the catamaran have been taken into account. Here, the optimum total resistance coefficient (CT) has been mainly set within the range of S/L ratio 0.2 ≤ S/L ≤ 0.4 associated with

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31

Lotze, A., C. Y. Stroud, and S. J. Soldin. "Serial lecithin/sphingomyelin ratios and surfactant/albumin ratios in tracheal aspirates from term infants with respiratory failure receiving extracorporeal membrane oxygenation." Clinical Chemistry 41, no. 8 (1995): 1182–88. http://dx.doi.org/10.1093/clinchem/41.8.1182.

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Abstract Serial tracheal aspirate samples were obtained for determination of lecithin/sphingomyelin (L/S) ratios from 47 term infants in respiratory failure. Phospholipids were extracted with Folch solution (chloroform:methanol, 2:1 by vol) and analyzed by HPLC with use of silica column and a mobile phase of acetonitrile:methanol:water (48:31:21, by vol). Surfactant/albumin (S/A) ratios were determined with the TDx Fetal Lung Maturity Assay (Abbott Labs). L/S ratios increased significantly over time in all patients (F = 19.42, P &lt; 0.0001). The S/A ratio correlated with the L/S ratio (r

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32

Pakpayat, Natthida, and Prapaporn Boonme. "Effects of Various Co-Surfactants and Oils on Microemulsion Formation in Decylglucoside System." Advanced Materials Research 747 (August 2013): 653–56. http://dx.doi.org/10.4028/www.scientific.net/amr.747.653.

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Decylglucoside is a non-ionic, non-toxic, biodegradable surfactant. This work aimed to establish composition where stable microemulsions could form using hydrophilic lipophilic deviation (HLD) concept to optimise the formulations. Scanning for suitable ratios of surfactant and co-surfactant was carried out by altering the surfactant/co-surfactant (S/CoS) ratios with two co-surfactants and seven different oils in order to find the optimum formulations. From the optimal S/CoS ratios, pseudo-ternary phase diagrams by dilution were subsequently performed, leading to obtain microemulsion zones. The

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33

Becker, Ralf, Junsoo Lee, and Benton E. Gup. "An empirical analysis of mean reversion of the S&P 500’s P/E ratios." Journal of Economics and Finance 36, no. 3 (2010): 675–90. http://dx.doi.org/10.1007/s12197-010-9145-8.

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34

RAO, YONG, YUSHAN NI, and CHAOFENG LIU. "FLOW EFFECT AROUND TWO SQUARE CYLINDERS ARRANGED SIDE BY SIDE USING LATTICE BOLTZMANN METHOD." International Journal of Modern Physics C 19, no. 11 (2008): 1683–94. http://dx.doi.org/10.1142/s0129183108013217.

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The flow around two square cylinders arranged side by side has been investigated through lattice Boltzmann method under different Reynolds numbers and various space ratios (s = d/D, d is the separation distance between two cylinders, D is the characteristic length) from 1.0, 1.1 to 2.7, including 18 space ratios. It is found that the flip-flop regime occurs at small space ratios and the synchronized regime occurs at large space ratios. Wide and narrow wakes at small spacing are formed and intermittently change behind the cylinders, and the biased flow in the gap is bistable. The frequency of v

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35

BAILEY, L. D. "THE SULPHUR STATUS OF EASTERN CANADIAN PRAIRIE SOILS: SULPHUR RESPONSE AND REQUIREMENTS OF ALFALFA (Medicago sativa L.), RAPE (Brassica napus L.) AND BARLEY (Hordeum vulgare L.)." Canadian Journal of Soil Science 66, no. 2 (1986): 209–16. http://dx.doi.org/10.4141/cjss86-023.

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Alfalfa (Medicago sativa), rape (Brassica napus) and barley (Hordeum vulgare) were grown in a growth chamber with and without sulphur (S) on surface samples (0–15 cm) of 17 eastern Canadian prairie soils. The soil varied in pedological origin and were divided into three groups based on their total nitrogen:total sulphur (N:S) ratios. Herbage yield of alfalfa (full bud) and rape (flowering) were highly correlated (P < 0.01) with soil (N:S)s ratios and soil SO4-S, while for barley (shot blade) the relationships were significant [Formula: see text]. Herbage yields of the three crops were also

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36

Aitala, E. M., S. Amato, J. C. Anjos та ін. "Measurement of the form-factor ratios for D+s→φℓ+νℓ". Physics Letters B 450, № 1-3 (1999): 294–300. http://dx.doi.org/10.1016/s0370-2693(99)00141-0.

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37

James, William H. "The associated offspring sex ratios and cause(s) of hyperemesis gravidarum." Acta Obstetricia et Gynecologica Scandinavica 80, no. 4 (2001): 378–79. http://dx.doi.org/10.1034/j.1600-0412.2001.080004378.x.

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38

Davison, W., J. P. Lishman, and J. Hilton. "Formation of pyrite in freshwater sediments: Implications for C/S ratios." Geochimica et Cosmochimica Acta 49, no. 7 (1985): 1615–20. http://dx.doi.org/10.1016/0016-7037(85)90266-2.

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39

Dwivedi, B. N. "Forbidden line ratios from Si viii and S x coronal ions." Solar Physics 131, no. 1 (1991): 49–52. http://dx.doi.org/10.1007/bf00151743.

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40

Eaton, Perry A., and Gerald W. Hohmann. "An evaluation of electromagnetic methods in the presence of geologic noise." GEOPHYSICS 52, no. 8 (1987): 1106–26. http://dx.doi.org/10.1190/1.1442376.

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An important element of electromagnetic (EM) prospecting is survey design; numerical modeling algorithms may be used to calculate signal‐to‐geologic‐noise (S/N) ratios to compare different survey configurations and measured responses quantitatively. Our models consist of a prismatic three‐dimensional (3-D) target in a conductive half‐space which may contain an overburden conductor; the models are energized by a time‐varying current transmitted in a loop of wire. The signal is the scattered or anomalous response of the target, while the geologic noise is either the response of the half‐space or

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41

Ding, Jianhua, Qi Yao, and Lei Jiang. "Comparisons of Scotopic/Photopic Ratios Using 2- and 10-Degree Spectral Sensitivity Curves." Applied Sciences 9, no. 20 (2019): 4471. http://dx.doi.org/10.3390/app9204471.

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Despite the fact that a 2-degree spectral sensitivity curve (SSC) is extensively used in scientific research and relevant applications, the choice between the 10-degree or the 2-degree photopic SSCs in practical applications for the calculation of scotopic/photopic ratios (S/P ratios) depends on actual needs. We examined S/P ratios for more than 300 light sources for correlated colour temperatures (CCTs) from 2000 K to 8000 K and blackbody radiant spectra from 10000 K to 45000 K using 2- and 10-degree SSCs. Results showed that the ratio of the S/P values calculated using the 10-degree and 2-de

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Olafsdottir, E., J. O. Westgard, S. S. Ehrmeyer, and K. D. Fallon. "Matrix effects and the performance and selection of quality-control procedures to monitor PO2 measurements." Clinical Chemistry 42, no. 3 (1996): 392–96. http://dx.doi.org/10.1093/clinchem/42.3.392.

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Abstract We have assessed how variation in the matrix of control materials would affect error detection and false-rejection characteristics of quality-control (QC) procedures used to monitor PO2 in blood gas measurements. To determine the expected QC performance, we generated power curves for S(mat)/S(meas) ratios of 0.0-4.0. These curves were used to estimate the probabilities of rejecting analytical runs having medically important errors, calculated from the quality required by the CLIA '88 proficiency testing criterion and the precision and accuracy expected for a typical analytical system.

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43

Iga, John, Keith George, Adrian Lees, and Thomas Reilly. "Reliability of Assessing Indices of Isokinetic Leg Strength in Pubertal Soccer Players." Pediatric Exercise Science 18, no. 4 (2006): 436–45. http://dx.doi.org/10.1123/pes.18.4.436.

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Using 95% limits of agreement (LOA), this study examined the reproducibility of indices of isokinetic leg strength in pubertal soccer players. Following familiarization, 23 boys performed isokinetic assessments of the knee joint muscles at 1.08, 2.16, and 4.32 rad/s during concentric exercise and at 2.16 rad/s during eccentric actions on two separate occasions. Peak torque values were recorded and reciprocal and bilateral muscle group ratios were calculated. As random error was heteroscedastic, 95% ratio LOA were employed. Systematic bias for the various measurements ranged from 0.97 to 1.07 f

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44

Korrat, I. M., Ahmed Lethy, M. N. ElGabry, H. M. Hussein, and Adel S. Othman. "Discrimination Between Small Earthquakes and Quarry Blasts in Egypt Using Spectral Source Characteristics." Pure and Applied Geophysics 179, no. 2 (2022): 599–618. http://dx.doi.org/10.1007/s00024-022-02953-w.

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AbstractSource parameters calculated from displacement spectra of both P and S waves are used to discriminate between earthquakes and quarry blasts in three regions of Egypt during the 2009–2015 period. We use vertical component seismograms from 440 earthquakes and 450 quarry explosions with MD 1.5 to 3.3 to calculate source parameters, including scalar moments and corner frequencies. The Mo(P,S) vs. fc(P,S) and P- to S-wave corner frequency fc(P)/fc(S) ratios are used to distinguish quarry blasts from earthquakes. A comparison of Mo(P,S) vs. fc(P,S) for both earthquakes and explosions in Egyp

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Zaki, Mohamed Yassine, Florinel Sava, Iosif Daniel Simandan, Claudia Mihai, and Alin Velea. "Structural and Compositional Analysis of CZTSSe Thin Films by Varying S/(S+Se) Ratio." Energies 17, no. 15 (2024): 3684. http://dx.doi.org/10.3390/en17153684.

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The development of kesterite (Cu2ZnSn(S,Se)4, CZTSSe) thin films for photovoltaic applications is highly necessary, given their composition of Earth-abundant, environmentally friendly elements and their compatibility with established photovoltaic technologies. This study presents a novel synthesis approach for CZTSSe films with varied S/(S+Se) ratios, ranging from 0.83 to 0.44, by a two-step magnetron sputtering deposition/annealing process. The first step consists in an initial deposition of stacked Mo/SnS2/Cu layers, which, upon thermal treatment in a sulfur atmosphere, were transformed into

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Ajaz, M., M. Bilal, Y. Ali, M. K. Suleymanov, and K. H. Khan. "Models prediction of hadrons production ratios in pp collisions at s = 7 TeV." Modern Physics Letters A 34, no. 13 (2019): 1950090. http://dx.doi.org/10.1142/s0217732319500901.

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The pseudorapidity [Formula: see text] dependence of charged-particles ratios in three transverse momentum [Formula: see text] regions, obtained by hadron production models, in proton–proton collisions at 7 TeV are compared with the measurements of LHCb detector. Compared to the experimental data, the [Formula: see text] ratios are independent of [Formula: see text] and [Formula: see text] and are very well predicted by all models (DPMJETIII, EPOS1.99, EPOS-LHC, HIJING1.383, QGSJETII-04 and Sibyll2.3c). All models predict the [Formula: see text] ratio at low [Formula: see text] for [Formula: s

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van Duijkeren, Engeline, B. van Klingeren, A. G. Vulto, Marianne M. Sloet van Oldruiteriborgh-Oosterbaan, H. J. Breukink, and A. S. J. P. A. M. van Miert. "In vitro susceptibility of equine Salmonella strains to trimethoprim and sulfonamide alone or in combination." American Journal of Veterinary Research 55, no. 10 (1994): 1386–90. http://dx.doi.org/10.2460/ajvr.1994.55.10.1386.

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Summary The in vitro activity of trimethoprim (tmp) and 9 sulfonamides and their combinations in 6 concentration ratios was tested against 62 Salmonella strains isolated from horses over a 3-year period in the Netherlands, using the agar-dilution method. Most of the isolates were S typhimurium strains (n = 52); the others were S heidelberg (n = 3), S hadar (n = 2), S thompson (n = 2), S enteritidis (n = 1), S infantis (n = 1), and S derby (n = 1). The minimal TMP concentration at which 50% of the Salmonella strains were inhibited (mic50) was 0.12 |ig/ml. Sulfachlorpyridazine (scp; mic50, 16 fi

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Seekins, Linda C., Leif Wennerberg, Lucia Margheriti, and Hsi-Ping Liu. "Site amplification at five locations in San Francisco, California: A comparison of S waves, codas, and microtremors." Bulletin of the Seismological Society of America 86, no. 3 (1996): 627–35. http://dx.doi.org/10.1785/bssa0860030627.

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Abstract We compare microtremor data to weak-motion S-wave and coda recordings at sites in San Francisco in order to clarify the range of applicability of microtremor data to ground-motion prediction. We also compare S-wave results to coda results. For each type of data, we compute spectral ratios of motions from two soil/rock station pairs and from an uphole/downhole pair in the Marina district. We compute horizontal/vertical ratios (Nakamura's method) at a soil site, a rock site, and the surface and borehole instruments. In the station-pair analyses, microtremor data show amplifications at t

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Marty, Nicolas C. M., Sylvain Grangeon, Fabienne Warmont, and Catherine Lerouge. "Alteration of nanocrystalline calcium silicate hydrate (C-S-H) at pH 9.2 and room temperature: a combined mineralogical and chemical study." Mineralogical Magazine 79, no. 2 (2015): 437–58. http://dx.doi.org/10.1180/minmag.2015.079.2.20.

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AbstractCalcium silicate hydrate (C-S-H) alteration was studied with flow-through experiments at 25°C and pH 9.2. Three materials with apparent Ca/Si ratios (C/S ratios) of 1.47, 1.38 and 0.86 were investigated. Physical (thermogravimetric analyses/differential thermal analysis), mineralogical (X-ray diffraction) and chemical (electron probe microanalysis, transmission electron microscopy/energy dispersive X-ray spectrometry) analyses were performed to characterize the reacting minerals. Initial stoichiometric C/S ratios were 1.22, 1.22 and 0.85, respectively. The excess of Ca is attributed ma

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BAILEY, L. D. "THE SULPHUR STATUS OF EASTERN CANADIAN PRAIRIE SOILS: THE RELATIONSHIP OF SULPHUR, NITROGEN AND ORGANIC CARBON." Canadian Journal of Soil Science 65, no. 1 (1985): 179–86. http://dx.doi.org/10.4141/cjss85-018.

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Surface and subsurface samples of 17 of the most agriculturally important soils of the eastern Canadian prairies were analyzed for total S, sulphate S, total N and organic C. The soils varied in texture from sandy loam to clay loam. Fifteen of the soils were of the Chernozemic order, one was Brunisolic and the other Luvisolic. The subgroups included were Orthic Blacks, Gleyed Rego Blacks, Orthic Dark Greys, Eluviated Eutric Brunisol and Orthic Luvisol. The total S of the soils decreased with depth and was significantly correlated with total N and with organic C. The sulphate sulphur extracted

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