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Journal articles on the topic 'Compositions, proportion'

Author: Grafiati

Published: 28 July 2024

Last updated: 31 July 2025

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1

Makhortov, D. S., L. Kh Zagorodnyuk, N. A. Shapovalov, and D. A. Sumskoy. "Cement and claydite dust binding compositions." Russian Automobile and Highway Industry Journal 19, no. 4 (2022): 584–96. http://dx.doi.org/10.26518/2071-7296-2022-19-4-584-596.

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Introduction. The article presents the production results for binder compositions of the optimal proportion based on Portland cement and claydite waste – claydite dust. The granulometric composition studies have been conducted, test results for binder compositions of different proportions are presented: cement – claydite dust, jointly mechanically activated in a vibrating mill. The binder compositions with a wide range of use have been developed and determined. Using the electron microscopy method, microphotographs of cement stones chips made from Portland cement and different contents of clay

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2

Chin, Michelle, Carolyn White, Diana Burchell, Kathleen Hipfner-Boucher, Lucie Broc, and Xi Chen. "Effects of Transcription Mode on Word-Level Features of Compositional Quality among French Immersion Elementary Students." Languages 9, no. 7 (2024): 234. http://dx.doi.org/10.3390/languages9070234.

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Transcription is an important component of the writing process that affects the quality of children’s compositions. However, little is known about how transcription mode influences productivity or spelling accuracy, two word-level markers of compositional quality, among children learning to write in an additional language. To address this issue, we compared the effects of handwriting and keyboarding on text length and spelling in the compositions of L2 French learners. Grade 2 to 4 students (n = 48) in French Immersion were given two writing prompts and asked to produce one text on paper and o

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3

Bagiński, B., P. Dzierżanowski, R. Macdonald, and B. G. J. Upton. "Complex relationships among coexisting pyroxenes: the Palaeogene Eskdalemuir dyke, Scotland." Mineralogical Magazine 73, no. 6 (2009): 929–42. http://dx.doi.org/10.1180/minmag.2009.073.6.929.

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AbstractThe composite Eskdalemuir dyke was formed by the intrusion of rhyolitic magma into partly crystallized basaltic magma, the proportion of the silicic component increasing towards the dyke centre. The less silicic parts were effectively supercooled and crystallization was halted when the residual melt quenched to rhyolitic glass which constitutes up to 50% of the dyke's centre. Pyroxene compositions in the mixed magma rocks include augite, pigeonite and orthopyroxene of very variable composition. Individual crystals in the matrix as small as 200 μm can contain compositions occupying a co

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4

Ruslan, Ruslan, Susanti Linuwih, Purhadi Purhadi, Sony Sunaryo, and Sri Nurhatika. "PEMBUATAN PUPUK BOKASHI DARI SAMPAH LINGKUNGAN BERDASARKAN RANCANGAN PERCOBAAN CAMPURAN YANG OPTIMUM PADA MODEL PERMUKAAN MULTIRESPON." Berkala Penelitian Hayati 15, no. 1 (2009): 71–76. http://dx.doi.org/10.23869/bphjbr.15.1.200912.

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Environment waste arround ITS college such as waste of Trembesi leaves, Sono leaves, and Satintail at this research will be used as part of materials of Bokashi fertilizer producing. The first aim of this research produced Bokashi fertilizer in various proportion waste of Trembesi leaves, Sono leaves, and Satintail with other materials proportion which has been assumed to be constant based on development of optimum mixture design of multiresponse surface theory by D-optimum criterion. The second aim of this research was compared 5:3:1:1 composition from reference to 5:2:1:2 composition from re

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Tudoran, Gheorghe-Marian. "Composition of Natural Forest Types—Long-Term Goals for Sustainable Forest Management." Forests 15, no. 7 (2024): 1196. http://dx.doi.org/10.3390/f15071196.

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The high stability of stands with structures similar to natural ecosystems justifies adopting their composition as a management goal. Increasing the proportion of spruce in mixed forests and in deciduous forests in the Romanian Carpathian region, against the backdrop of climate change, may affect their stability. The natural distribution of tree species was investigated to establish natural forest types for defining future stand compositions. A forest in the Făgăraș Mountains of the Southeastern Carpathians was selected, and the mapping results were applied to a management unit of 4303.2 ha. S

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Chao, Jerry, Gideon M. Wolfaardt, and Michael T. Arts. "Characterization of Pseudomonas aeruginosa fatty acid profiles in biofilms and batch planktonic cultures." Canadian Journal of Microbiology 56, no. 12 (2010): 1028–39. http://dx.doi.org/10.1139/w10-093.

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The fatty acid composition of Pseudomonas aeruginosa PAO1 was compared between biofilm and batch planktonic cultures. Strain PAO1 biofilms were able to maintain a consistent fatty acid profile for up to 6 days, whereas strain PAO1 batch planktonic cultures showed a gradual loss of cis-monounsaturated fatty acids over 4 days. Biofilms exhibited a greater proportion of hydroxy fatty acids but a lower proportion of both cyclopropane fatty acids and saturated fatty acids (SAFAs). SAFAs with ≥16 carbons, in particular, decreased in biofilms when compared with that in batch planktonic cultures. A re

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7

Allen, Gordon, and Zdenek Hrubec. "Zygosity Partitioning of Small Twin Samples." Acta geneticae medicae et gemellologiae: twin research 34, no. 3-4 (1985): 167–74. http://dx.doi.org/10.1017/s0001566000004682.

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AbstractWhen the Weinberg estimate of the proportion of monozygotic pairs is quite deviant from that in the source population, it is likely to be wrong because Weinberg's difference is much less stable than the zygosity proportions. A formula is proposed for the probability distribution of possible compositions of a small sample of twins based on sex concordance in the sample and zygosity proportions in the source population.

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8

Zhang, Lihao, Yugang Tian, and Qingwei Liu. "A Novel Urban Composition Index Based on Water-Impervious Surface-Pervious Surface (W-I-P) Model for Urban Compositions Mapping Using Landsat Imagery." Remote Sensing 13, no. 1 (2020): 3. http://dx.doi.org/10.3390/rs13010003.

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Monitoring urban compositions spatially and temporally is a crucial issue for urban planning and management. Nowadays, remote sensing techniques have been widely applied for urban compositions extraction. Compared with other remote sensing techniques, spectral indices have significant advantages due to their parameter-free and easy implementation. However, existing indices cannot extract different urban compositions well, and some of them can only extract one composition with less attention to other urban compositions. In this study, based on the water- impervious surface-pervious surface (W-I

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9

Correa, Giancarlo M., Lorenzo Ciannelli, Lewis A. K. Barnett, Stan Kotwicki, and Claudio Fuentes. "Improved estimation of age composition by accounting for spatiotemporal variability in somatic growth." Canadian Journal of Fisheries and Aquatic Sciences 77, no. 11 (2020): 1810–21. http://dx.doi.org/10.1139/cjfas-2020-0166.

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Age composition is defined as the proportion of a fish population belonging to each age class and is an informative input to stock assessment models. Variations in somatic growth rates may lead to larger errors in age composition estimates. To reduce this source of error, we compared the performance of four methods for estimating age compositions of a simulated fish population: two methods based on age–length keys (ALK, pooled and annual) and two model-based approaches (generalized additive models (GAMs) and continuation ratio logits (CRLs)). CRL was the most robust and precise method, followe

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10

Yang, Li, Wubin Weng, Yanqun Zhu, Yong He, Zhihua Wang, and Zhongshan Li. "Investigation of Hydrogen Content and Dilution Effect on Syngas/Air Premixed Turbulent Flame Using OH Planar Laser-Induced Fluorescence." Processes 9, no. 11 (2021): 1894. http://dx.doi.org/10.3390/pr9111894.

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Syngas produced by gasification, which contains a high hydrogen content, has significant potential. The variation in the hydrogen content and dilution combustion are effective means to improve the steady combustion of syngas and reduce NOx emissions. OH planar laser-induced fluorescence technology (OH-PLIF) was applied in the present investigation of the turbulence of a premixed flame of syngas with varied compositions of H2/CO. The flame front structure and turbulent flame velocities of syngas with varied compositions and turbulent intensities were analyzed and calculated. Results showed that

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11

Dmitriev, Andrey N., Elena A. Vyaznikova, Galina Yu Vitkina, and Roman V. Alektorov. "Study of the Strength Characteristics of Agglomerate Depending on its Structure and Phase Composition." Defect and Diffusion Forum 420 (November 14, 2022): 63–72. http://dx.doi.org/10.4028/p-0g7e07.

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Strength characteristics of iron ore agglomerates of various basicity (mechanical strength and abrasion resistance, thermomechanical strength) have been investigated. The chemical and phase compositions of iron ore agglomerates, their microstructure and local chemical composition were analyzed. Dependences of the strength characteristics of iron ore agglomerates of various basicity on the morphology of silicate bond have been obtained. Dependences of influence of basicity of iron ore agglomerates on their strength characteristics depending on the proportion of phase components are obtained. It

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12

Eberhardt, Thomas L., Philip M. Sheridan, and Jolie M. Mahfouz. "Monoterpene persistence in the sapwood and heartwood of longleaf pine stumps: assessment of differences in composition and stability under field conditions." Canadian Journal of Forest Research 39, no. 7 (2009): 1357–65. http://dx.doi.org/10.1139/x09-063.

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Monoterpenes in exudates, phloem, and sapwood have received considerable attention relative to the active defenses of pine trees. However, little is known about the composition and function of the heartwood monoterpenes. To address this deficiency, monoterpene contents and relative compositions were determined for sapwood and heartwood samples from longleaf pine ( Pinus palustris Mill.) stumps monitored in the field for a 1 year period postharvest. Gas chromatography – mass spectrometry analysis of sapwood and heartwood sample extracts showed the total monoterpene contents for both declined at

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Yu, Jin Jiang, Xiao Feng Sun, Jiang Xin Lou, Hai Xia Lang, Heng Rong Guan, and Zhuang Qi Hu. "Recycled Applications of a Single Crystal Superalloy." Advanced Materials Research 239-242 (May 2011): 1422–27. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.1422.

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The effects of application of recycled scraps on the composition, microstructure and mechanical properties of SRR99 alloy were studied. The compositions of recycle master alloy are similar to that of the fresh alloy. However, nitrogen content, the size and amount of microporosity increase significantly with the recycle material proportion. Granular, lamellar and strip-like MC particles mainly represent in the interdendritic regions of the revert alloy. With the addition of the recycled material proportion, the amount of the granular ones rapidly drop and the lamellar ones gently enhance. The s

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14

Yang, Yuanting, Qun Wu, Hu Liu, et al. "Sustainable Use of Pennisetum sinese: Effect on Nutritional Components and Fermentation Quality of Stylosanthes guianensis in Tropics." Sustainability 15, no. 16 (2023): 12484. http://dx.doi.org/10.3390/su151612484.

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Mixed ensiling of Stylosanthes guianensis and Pennisetum sinese is an alternative method to improve the nutrient composition of feeds for healthy and green ruminant production in the tropics. This study examined the fermentation quality, nutritional composition, and microbial population in silage to select the most suitable ratio of mixed silage containing different proportions of S. guianensis and P. sinese. It was completely randomized and consisted of four treatments with five replications based on fresh weight as follows: S0, 100% P. sinese; S15, 85% P. sinese + 15% S. guianensis; S30, 70%

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15

Pires, Patrícia C., Mariana Fernandes, Francisca Nina, et al. "Innovative Aqueous Nanoemulsion Prepared by Phase Inversion Emulsification with Exceptional Homogeneity." Pharmaceutics 15, no. 7 (2023): 1878. http://dx.doi.org/10.3390/pharmaceutics15071878.

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Formulating low-solubility or low-permeability drugs is a challenge, particularly with the low administration volumes required in intranasal drug delivery. Nanoemulsions (NE) can solve both issues, but their production and physical stability can be challenging, particularly when a high proportion of lipids is necessary. Hence, the aim of the present work was to develop a NE with good solubilization capacity for lipophilic drugs like simvastatin and able to promote the absorption of drugs with low permeability like fosphenytoin. Compositions with high proportion of two lipids were screened and

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16

Koshak, Zhanna V., Anna N. Grinko, Nikolai P. Buryakov, and Dmitrii E. Aleshin. "Establishment of hydrolysates from enzymatic plant and fish protein by-products into fish nutrition." E3S Web of Conferences 494 (2024): 04021. http://dx.doi.org/10.1051/e3sconf/202449404021.

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The aim of this research was to scientifically prove the technology for producing plant-fish hydrolysates from sunflower meal and fish waste (carp processing) and to develop scientifically based recipes for protein hydrolysates and feed using it for carp of different ages. Compositions from fish waste and different amounts of sunflower meal have been developed, the chemical composition of the compositions and the digestibility of protein by carp have been studied. It was distinguished that the best characteristics when studing the nutritional value and digestibility of crude protein have the p

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17

Falk, Amir, and Shaul Fox. "Gender and Ethnic Composition of Assessment Centers and Its Relationship to Participants’ Success." Journal of Personnel Psychology 13, no. 1 (2014): 11–20. http://dx.doi.org/10.1027/1866-5888/a000100.

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Although assessment centers (ACs) are recognized for their high validity, the lack of standardization associated with some aspects of ACs may limit their strength. One source for lack of standardization is the demographic composition within the AC, which may affect members’ actual or perceived performance. We investigate the influences of gender and ethnicity (Jewish vs. Arab) compositions of participants and assessors on participants’ success in ACs for educational managerial positions in Israel. Participants were 384 candidates from 44 ACs. The participants’ success was determined by the ass

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18

Sultanbaeva Geeta, Raushan Kaiynbaeva, Raissa Chernyakova, Umirzak Jussipbekov, Gulnar Bugubaeva, and Ersyn Tusupkaliyev. "COMPOSITES BASED ON OYMASH SALT." Chemical Journal of Kazakhstan, no. 3 (September 30, 2024): 24–35. http://dx.doi.org/10.51580/2024-3.2710-1185.30.

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In recent years, an urgent task is to find materials of domestic origin and create on their basis affordable and cheap, easy-to-use, reliable composite compositions for the preparation of well killing fluid. Nowadays, the need for process fluids that help preserve and restore reservoir properties always remains. Available and inexpensive natural salt from the Oimash deposit (Mangistau region) can create the required density in the well killing fluid and be its main component. The aim of the work is to develop compositions based on Oimash salt for the preparation of well killing fluids, which i

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19

Legesse, Sintayehu, Solomon Worku, and Geremew Bultosa. "Effect of rice variety and blending proportion on the proximate compositions, minerals and phytic acid contents of bread from rice-teff blend." F1000Research 4 (May 13, 2015): 116. http://dx.doi.org/10.12688/f1000research.6201.1.

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Development of bakery products containing rice (Oryza sativa, Linn.) and teff (Eragrostis tef) could have potential health benefits due to their gluten free nature. Nine experimental runs were generated using custom design by JMP 8 software. The effect of two factors, rice variety (Edeget, X-jigna and Nerica-4) and blending proportions of rice and teff (0.5:0.5, 0.7:0.3 and 0.9:0.1) were studied. The data analysis was conducted using SAS software package for the mean comparison and custom design by JMP 8 software. Response surface methodology was applied to study the interaction effect of the

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20

Wei, Chenshuai, Yanhong Xu, Dewang Li, et al. "Sources and Characteristics of Dissolved Organic Matter (DOM) during the Winter Season in Hangzhou Bay: Insights from Chromophoric DOM and Fluorescent DOM." Water 17, no. 11 (2025): 1590. https://doi.org/10.3390/w17111590.

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Elucidating the compositions, sources and mixing processes of dissolved organic matter (DOM) is crucial for a gaining deeper understanding of the coastal carbon cycle and global carbon budget. Hangzhou Bay (HZB), a vital estuary in China, receives freshwater inputs in the upper bay, borders the Changjiang River Estuary (CRE) to the north and is adjacent to Zhoushan Islands Region (ZIR) to the east. In HZB, the DOM sources and their compositions in estuaries remain unclear due to the complexity of this dynamic environment. In this study, we aimed to explore the chemical composition and sources

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Zambare, Amit V. "Development of Cookies Using Fruit Waste Peel Powder." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 08, no. 06 (2024): 1–5. http://dx.doi.org/10.55041/ijsrem35501.

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The main objective of the investigation was to prepare peel powder from pineapple, banana & watermelon fruit and prepare cookies by using its different compositions. The recipe for cookies was formulated and studied by keeping all the other ingredients same except varying compositions of cornific and fruit peels powder. All ingredients were weighed according to different compositions, in which milk powder (4%), custard powder (4%), sugar flour (25%), ghee (23%), baking powder (0.5%), milk (4%) and salt (0.5%) were kept constant for all the compositions. Three compositions of fruit peel pow

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22

Huang, Yaohua, and Chengbo Zhang. "Network Algorithms for Intelligent Evaluation of Composition in Middle School English Cloud Classrooms." International Journal of Web-Based Learning and Teaching Technologies 19, no. 1 (2024): 1–17. http://dx.doi.org/10.4018/ijwltt.337967.

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This study combines link grammar (LG) detector with N-grammar model to analyze and evaluate grammar in compositions. And then the composition level is judged through information entropy. Finally, the composition score is calculated based on the overall composition level and grammar weight. The experimental results show that the combined weight of recall and accuracy of the proposed method in this study is 89.9%, which is 26.6% higher than LG and 9.7% higher than Grammarly. In the performance test of scoring the entire essay, the proportion of error between the proposed method and manual evalua

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23

Young, Michael K., Wayne A. Hubert, and Thomas A. Wesche. "Biases Associated with Four Stream Substrate Samplers." Canadian Journal of Fisheries and Aquatic Sciences 48, no. 10 (1991): 1882–86. http://dx.doi.org/10.1139/f91-223.

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We compared samples collected from 10 substrates of various compositions with a single-probe freeze-core sampler, a triple-probe freeze-core sampler, a McNeil sampler, and a shovel. The accuracy with which these devices sampled particles larger than 50 mm in diameter varied; they were oversampled by the freeze-core devices, sampled in proportion to their availability by a shovel, and sampled inconsistently by the McNeil sampler. The geometric mean particle size and variance of single-probe freeze-core samples consistently exceeded those of samples collected with the other devices. Most sample

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24

PLAKHTII, Ye H. "DEVELOPMENT AND RESEARCH OF NEW NANOMATERIALS FOR ELECTRONICS OF THE ZnSXSe1-X TYPE OBTAINED BY THE COMBUSTION SYNTHESIS METHOD." Physical Metallurgy and Heat Treatment of Metals 4, no. 4 (2022): 47–56. http://dx.doi.org/10.30838/j.pmhtm.2413.271222.47.910.

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Introduction. Nanocrystals of ZnSxSe1-x solid solutions were synthesized by the combustion synthesis method with a parameter step of x = 0.2, with reproducible and controlled properties and low cost. Results. The composition of the charge placed before synthesis and the powder obtained after synthesis is different. The sizes of ZnSxSe1-x nanocrystals calculated by the Debye-Scherrer method ranged from 60±5 nm to 80±5 nm. The obtained degrees of microstress and dislocation density are characteristic of homogeneous compositions with high perfection of the crystal structure. NCs are characterized

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Mysnik, E. N. "Features of the specific composition of weeds on the territory of Vsevolozhsk (Leningrad region)." Проблемы ботаники южной сибири и монголии 20, no. 1 (2021): 313–16. http://dx.doi.org/10.14258/pbssm.2021062.

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As a part of the ecological approach, weeds are considered as plants of secondary habitats of natural and artificial origin with disturbed natural vegetation cover. Such habitats are also available in the territory of settlements. Therefore,the study of the specific composition of weeds in the territory of settlements is an important area of scientific research. Thepurpose of this study is to identify the features of the specific composition of weeds depending on the type of habitat in thecity of Vsevolozhsk (Leningrad Region). Аs a result of the study, new data were obtained on the weeds dist

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26

Korzhynbayeva, Kuralay Beisenbaevna, Sagdat Tazhibayeva, Kuanyshbek Bituovich Musabekov, Mukhametkali Musagalievich Mataev, and Orynbay Yerbolatuli Zhanadilov. "Preparation of Magnetic Compositions of Diatomite." Applied Mechanics and Materials 467 (December 2013): 97–102. http://dx.doi.org/10.4028/www.scientific.net/amm.467.97.

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A new magnetitediatomite compositions was synthesized by co-precipitation diatomite with Fe2+ and Fe3+ in the presence of diatomite. Magnetic compositions of diatomite were investigated using XRD and SEM. Comprehensive analysis for SEM and XRD data shows that the most favorable magnetic particle including to the diatomite pores in DM-15 and DM-30. Increasing of content of maghemite in compositions causes reduction of the proportion of smectite and mica, which is associated with the destruction of the crystal lattice. Determined by the interaction between the diatomite surface and including par

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KRAWIEC, Stanisław, Michał KRAWIEC, and Tadeusz LEŚNIEWSKI. "THE INFLUENCE OF THE TYPE OF GREASE ON THE SYNERGY OF ITS COMPOSITION WITH PTFE POWDER AND COPPER POWDER." Tribologia 265, no. 1 (2016): 45–55. http://dx.doi.org/10.5604/01.3001.0010.7579.

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Studies of the influence of the type of grease on the synergistic effect of its compositions with PTFE powder and of copper during the lubrication of steel sliding pairs working in mixed friction area of were presented. Two greases, car grease 1S with a lithium thickener and grease STP with calcium thickener, were adopted for analysis. As fillers in the two lubricants, powders of two solid lubricants were PTFE and copper were used. Three lubricating compositions were tested for each of the adopted greases. Two compositions contained one filler of 5% by weight, and the third composition contain

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Nwandji Yankam, Hippolyte, Elvis Mbou Tiaya, and Atahualpa Sosa-Lopez. "EFFECT OF IROKO AND SAPELLI SAWDUST MIXTURE ON THERMAL PROPERTIES OF COMPRESSED EARTH BRICKS (CEB)." International Journal of Advanced Research 12, no. 09 (2024): 441–48. http://dx.doi.org/10.21474/ijar01/19473.

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This study analyzes the effect of the mixture of Iroko and Sapelli sawdust on the thermal properties of compressed earth bricks(CEB). Various compositions were carried out for proportions of 15% sawdust consisting of the mixture of two wood species (Sapelli Iroko) in various proportions. The earth+sawdust mixture was stabilized with 8% cement or slaked lime. The hot plate method were used to determine thermal properties of bricks.The presence of sawdust improves the thermal properties of earth bricks. On the other hand, these thermal properties do not systematically evolve in the same directio

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Cheng, Tao, and Ke Qin Yan. "Mechanics Properties of the Lime-Steel Slag Stabilized Soil for Pavement Structures." Advanced Materials Research 168-170 (December 2010): 931–35. http://dx.doi.org/10.4028/www.scientific.net/amr.168-170.931.

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Mechanics properties of lime-steel slag stabilized soil for pavement structures are investigated. Firstly, the chemical composition of the fine grain steel slag is analyzed by spectral analysis test. In view of the materials compositions, 5 kinds of mix proportion projects are defined. Compaction tests of all mix proportion projects are carried out in different water conditions to obtain the optimum moisture contents. Then the optimum mix proportion project is demarcated by the unconfined compressive strength test and the compression rebound modulus test. Finally, the pavement structures desig

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Yip, T. T., C. N. B. Lau, Y. C. Kong, K. H. Yung, J. H. Kim, and W. S. Woo. "Ginsenoside Compositions on Panax Ginseng C.A. Meyer Tissue Culture and Juice." American Journal of Chinese Medicine 13, no. 01n04 (1985): 89–92. http://dx.doi.org/10.1142/s0192415x85000137.

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By TLC, DCC and HPLC analysis, ginesnoside compositions of ginseng tissue culture and juice showed distinct features of fresh materials by a high proportion of ''polar saponins'' and low panaxadiol panaxatriol ratio.

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Samrose, Samina, Saifa Anzum, Samira Mahmud, and Tanvir Manzur. "Tentative Optimum Proportion of Supplementary Cementitious Materials in Blended Cement to Perform Better under Tannery Wastewater." Materials Science Forum 937 (October 2018): 107–13. http://dx.doi.org/10.4028/www.scientific.net/msf.937.107.

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The present research studies the compressive strength of cement mortar cubes prepared from different proportions of supplementary cementitious materials (Fly Ash and Slag) in blended cement. This research aims to find the tentative optimum composition of supplementary cementitious material that shows better performance under tannery wastewater condition, such as that in effluent treatment plants. Synthetic tannery wastewater was simulated in laboratory after collecting wastewater sample from local tannery industry. Eight types of cement compositions (varying supplementary materials proportions

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Qiao, Yunfa, Shujie Miao, Yingxue Li, and Xin Zhong. "Chemical composition of soil organic carbon changed by long-term monoculture cropping system in Chinese black soil." Plant, Soil and Environment 64, No. 11 (2018): 557–63. http://dx.doi.org/10.17221/492/2018-pse.

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Monoculture is common to meet commodity grain requirements in Northeast China. The effect of long-term monoculture on chemical composition of soil organic carbon (SOC) remains unclear. This study was done to evaluate how changes in chemical compositions of SOC responded to long-term monoculture. To achieve this objective, the chemical compositions of SOC in maize-soybean rotation, continuous soybean and continuous maize were characterized with the nuclear magnetic resonance technique. Two main components, O-alkyl and aromatic C, showed a wider range of relative proportion in monoculture than r

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Pan, F., X. Wang, B. Wen, et al. "Development of walnut oil and almond oil blends for improvements in nutritional and oxidative stability." Grasas y Aceites 71, no. 4 (2020): 381. http://dx.doi.org/10.3989/gya.0920192.

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For the increase in oxidative stability and phytonutrient contents of walnut oil (WO), 5, 10, 20 and 30% blends with almond oil (AO) were prepared. The fatty acid compositions and the micronutrients of the oil samples such as tocopherol, phytosterol and squalene were measured by GC-MS and HPLC. It was found that the proportions of PUFAs/SFAs in blended oils with high AO contents were lowered, and the blends contained higher levels of tocopherols, phytosterols and squalene than those of pure WO. The 60 °C oven accelerated oxidation test was used to determine the oxidative stability of the blend

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Rembold, Katja, Eberhard Fischer, Markus A. Wetzel, and Wilhelm Barthlott. "Prey composition of the pitcher plant Nepenthes madagascariensis." Journal of Tropical Ecology 26, no. 4 (2010): 365–72. http://dx.doi.org/10.1017/s026646741000012x.

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Abstract:Nepenthes madagascariensis is a carnivorous plant which captures its prey in pitcher-like leaves. It is endemic to Madagascar where it occurs along the eastern coast. Altogether 94.3% of its prey animals belong to three taxa: Formicidae (80.2%), Diptera (9.7%) and Coleoptera (4.4%). The prey compositions of the dimorphic lower and upper pitcher types differ significantly, especially in the markedly higher proportion of ants in lower pitchers and the higher number of flying insects in upper pitchers. A comparison concerning the trap frequency of taxa with literature data from Asian Nep

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Salain, Alit, Yenni Ciawi, and Agung Sutapa. "Unit Weight and Elastic Modulus of Concrete utilizing Volcanic Stone Waste as Coarse Aggregate." European Journal of Engineering and Technology Research 8, no. 4 (2023): 26–29. http://dx.doi.org/10.24018/ejeng.2023.8.4.3052.

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Unit weight and elastic modulus of concrete utilizing volcanic stone waste (VSW) as coarse aggregate have been studied at 28 days of hydration. The origin of VSW was the residual of volcanic stone processing for making the handmade ornaments of traditional Balinese buildings. Three types of concrete mixture compositions were made by varying the proportion of cement, fine aggregate and coarse aggregate in concrete. Each mixture composition stirred using four variations of water/cement (w/c) ratio. For each variation in w/c, five cylindrical specimens with a diameter of 150 mm and a height of 30

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Haque, Md Anwarul, and Nicholas J. Russell. "Strains of Bacillus cereus vary in the phenotypic adaptation of their membrane lipid composition in response to low water activity, reduced temperature and growth in rice starch." Microbiology 150, no. 5 (2004): 1397–404. http://dx.doi.org/10.1099/mic.0.26767-0.

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The phenotypic adaptation of membrane lipids in seven strains of the food-poisoning bacterium Bacillus cereus, isolated from Bangladeshi rice, is reported in relation to their ability to grow under conditions of low water activity (a w), reduced temperature and the presence of soluble rice starch. The strains have different membrane phospholipid head-group and fatty acyl compositions, and they display individual differences in their responses to both low a w and reduced temperature. The extent of the increase in anionic membrane lipids in response to low a w varies from strain to strain, is so

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Yvert, Thomas, Eri Miyamoto-Mikami, Takuro Tobina, et al. "PPARGC1A rs8192678 and NRF1 rs6949152 Polymorphisms Are Associated with Muscle Fiber Composition in Women." Genes 11, no. 9 (2020): 1012. http://dx.doi.org/10.3390/genes11091012.

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PPARGC1A rs8192678 G/A (Gly482Ser) and NRF1 rs6949152 A/G polymorphisms have been associated with endurance athlete status, endurance performance phenotypes, and certain health-related markers of different pathologies such as metabolic syndrome, diabetes, and dyslipidemia. We hypothesized that they could be considered interesting candidates for explaining inter-individual variations in muscle fiber composition in humans. We aimed to examine possible associations of these polymorphisms with myosin heavy-chain (MHC) isoforms as markers of muscle fiber compositions in vastus lateralis muscle in a

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Hermawan, Agus, Adipati Napoleon, and Bakri Bakri. "Physical Properties of Briquette Fertilizers Made from Urea and Fly Ash-Azolla." JOURNAL OF TROPICAL SOILS 23, no. 3 (2019): 143–50. https://doi.org/10.5400/jts.2018.v23i3.143-150.

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Coal fly ash and Azolla biomass are potential materials to be used as raw materials for the manufacture of briquette fertilizers. In this study, the coal fly ash, azolla and urea in various compositions were mixtured to make briquette fertilizers. The study was conducted to evaluate the physical properties of briquette fertilizers, i.e bulk density, compressive strength, porosity, and water holding capacity on various compositions of fly ash-azolla and urea. The research was arranged in a Completely Randomized Design with three replicates. The formulation of briquette fertilizers as treatments

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Khan, Mohammad Shanawar, and Shohel Amin. "Effects of Chemical Stabilisation of Eggshells-Lime and Fly-Ash-Cement on the Structural Strength of Subgrade Soil in Rural Roads." Recent Progress in Materials 4, no. 2 (2022): 1. http://dx.doi.org/10.21926/rpm.2203013.

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This study examines the chemical compositions of eggshell powder (ESP) and lime as the soil stabilisers and compared with the compositions of cement and fly-ash to understand the optimal distribution of chemical stabilisers maximising the bearing capacity and structural integrity of subgrade soil. The different proportions of eggshell powder (ESP) (2%, 4%, 6% and 8% of total soil mass) were mixed with a fixed proportion of lime (6% of total soil mass) to analyse the optimum proportion of eggshell maximising the soil structural integrity. Similar proportions of fly-ash (2%, 4%, 6% and 8% of tot

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Andreikova, L. N., S. P. Bobrov, Yu O. Andriasyan, S. G. Karpova, and I. A. Mikhailov. "The Influence of the Type of Dipping Composition on the Structure of Aramid Cord Threads." International Polymer Science and Technology 45, no. 4 (2018): 171–73. http://dx.doi.org/10.1177/0307174x1804500408.

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Publications concerned with the influence of the type of dipping composition on the adhesion, physicomechanical, and service properties of aramid cord threads of grades Arom-75 (Rusar-75), Arom-175 (Rusar-175), and Rusar-200 are analysed. According to current ideas, the type of dipping composition affects not only the adhesion and physicomechanical properties of aramid cord but also its structure. Using electron spin resonance spectroscopy, we studied specimens of dipped Arom-75 cord threads and undipped threads (for comparison). The parameters characterising the structural state of the invest

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Grant Cawthorn, R. "Re-evaluation of magma compositions and processes in the uppermost Critical Zone of the Bushveld Complex." Mineralogical Magazine 60, no. 398 (1996): 131–48. http://dx.doi.org/10.1180/minmag.1996.060.398.09.

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AbstractA detailed geochemical study is presented of the uppermost Critical Zone, especially of the footwall and hanging wall to the Merensky Reef, at Impala Platinum Mines in the Bushveld Complex. The approximately 100 m-thick sequence below the Merensky Reef consists of 13 distinct layers which have sharp boundaries. They are adcumulates with varying proportions of cumulus plagioclase, orthopyroxene and chromite.Experimental studies on the composition of coexisting orthopyroxene liquid indicate that the magma which produced this sequence contained between 4 and 6% MgO. The magma from which t

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Walker, CD, and RCM Lance. "The Fractionation of 2H and 18O in Leaf Water of Barley." Functional Plant Biology 18, no. 4 (1991): 411. http://dx.doi.org/10.1071/pp9910411.

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Small changes in the natural abundance of hydrogen and oxygen isotopes in water occur as a result of transpiration. We considered whether these may be sufficient to study the differences in water relations of barley cultivars having different water-use efficiency (W). A range of cultivars of varying W were grown in the glasshouse and in the field in breeders' plots. Foliage water samples were taken from a specific leaf stage over the course of a day. Certain field-grown cultivars had consistently higher 2H and 18O compositions in foliage water than others at almost all sampling times, resultin

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Sagadeev, E., Lyudmila Suleymanova, R. Ibragimov, and V. Sagadeev. "OBTAINING AND STUDYING PHYSICAL AND MECHANICAL PROPERTIES OF SULFUR CONCRETE COMPOSITIONS." Bulletin of Belgorod State Technological University named after. V. G. Shukhov 10, no. 7 (2025): 8–19. https://doi.org/10.34031/2071-7318-2025-10-7-8-19.

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The development of new types of building materials that can function effectively for a long time in various aggressive conditions and climatic zones is one of the most important areas in modern construction materials science. As part of the study, fifty sulfur concrete compositions based on petrochemical and thermal power industry waste were developed using the "hot" technology method. In the process, the physical and mechanical properties of these compositions were studied, including compressive strength, density and water absorption. To achieve optimal characteristics of sulfur concrete, it

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MORAND-FEHR, P., and G. TRAN. "La fraction lipidique des aliments et les corps gras utilisés en alimentation animale." INRAE Productions Animales 14, no. 5 (2001): 285–302. http://dx.doi.org/10.20870/productions-animales.2001.14.5.3753.

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La fraction lipidique des fourrages et des aliments concentrés est généralement moins bien connue que leurs fractions glucidiques, protéiques et minérales. La teneur lipidique de ces aliments se mesure par le dosage de l’extrait éthéré selon deux procédés suivant qu’une hydrolyse à chaud est nécessaire ou non pour obtenir l’extraction la plus complète possible des lipides de l’aliment. Les fourrages ont une teneur en extrait éthéré de 2 à 12 % et un taux d’acide linolénique le plus souvent supérieur à 50 % des acides gras totaux. A mesure que la plante fourragère passe du stade jeune pousse au

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Hu, Hewen, Yue Li, Long Zhang, et al. "Use of Tremella as Fat Substitute for the Enhancement of Physicochemical and Sensory Profiles of Pork Sausage." Foods 10, no. 9 (2021): 2167. http://dx.doi.org/10.3390/foods10092167.

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Pork fat in sausage was replaced by tremella at different proportions during the process, and the physicochemical and sensory profiles of pork sausage were evaluated. Five recipes with the replacement proportion of 0%, 25%, 50%, 75%, and 100% tremella were manufactured, and their proximate compositions, water activities, textures, colors, water holding capacities (WHC), and amino acid compositions were investigated. The results showed that the protein, ash and moisture content, lightness, redness, and WHC of pork sausages were increased (p < 0.05), and textural profile analysis (TPA) and se

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Li, Zixing, Xinghao Wang, Yuan Huang, Xinrong Yang, Ran Wang, and Mengtao Zhang. "Increasing the Proportion of Broadleaf Species in Mixed Conifer-Broadleaf Forests Improves Understory Plant Composition and Promotes Soil Carbon Fixation." Plants 14, no. 9 (2025): 1392. https://doi.org/10.3390/plants14091392.

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Understory vegetation is an important component of forest ecosystems, and the supply of nutrients in the soil is related to the growth and development of soil microorganisms and understory plants. The effects of different tree species composition ratios in the forest on the process of soil microbial community assembly are not clear in the existing studies, and the factors influencing the differences in the abundance of understory plants under different forest canopy compositions and their mechanisms of action have not yet been clearly explained. In this study, two types of pure forests (PFP an

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Tian, Yu, Scott Crossley, and Luuk Van Waes. "The KLiCKe corpus: Keystroke logging in compositions for knowledge evaluation." Journal of Writing Research 17, no. 1 (2025): 23–60. https://doi.org/10.17239/jowr-2025.17.01.02.

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Despite the growing interest in the dynamics of the writing process in writing research, publicly available large-scale corpora of keystroke logs have been rare. We introduce KLiCKe, a freely available collection of keystroke logs for around 5,000 argumentative texts written by adults in the United States. The KLiCKe corpus also includes human-rated holistic scores for the essays as well as writers' demographic details, their typing skills, and vocabulary knowledge. We describe our methods for constructing the corpus and present descriptives for different components of the corpus. To illustrat

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Taketomi, T., A. Hara, K. Uemura, and E. Sugiyama. "Matrix-assisted laser desorption ionization time-of-flight mass spectrometric analysis of glycosphingolipids including gangliosides." Acta Biochimica Polonica 45, no. 4 (1998): 987–99. http://dx.doi.org/10.18388/abp.1998_4356.

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Long chain base compositions of gangliosides containing mainly stearic acid could be determined without any chemical modification by matrix-assisted laser desorption ionization time-of-flight mass spectrometry with delayed ion extraction (DE MALDI-TOF MS). The analytical results for the long chain base compositions of various samples of GM1 from the brain tissues of patients with different diseases at different ages confirmed that the proportion of d20:1 (icosasphingosine) and d20 (icosa-sphinganine) of the total sphingosine bases increased quickly until adolescent or adult age and then remain

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Henderson, G. S., Xiaoyang Liu, and M. E. Fleet. "Titanium coordination in silicate glasses investigated using O K-edge X-ray absorption spectroscopy." Mineralogical Magazine 67, no. 4 (2003): 597–607. http://dx.doi.org/10.1180/0026461036740120.

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AbstractA series of titanium silicate glasses along the composition joins TiO2-SiO2, TiO2-Na2SiO3, TiO2-K2SiO3 and TiO2-CaSiO3, has been examined using oxygen K-edge X-ray absorption near edge structure spectroscopy (XANES) confined to the near-surface region. Sharp pre-edge features in the spectra can be used to determine the Ti coordination in the glasses. The presence of [4]Ti is indicated by a pre-edge peak at ∼534 eV while [5]Ti is indicated by a peak at ∼533 eV. Titanium exists in all these glasses as [4]Ti and [5]Ti with no [6]Ti being present. For alkali-containing glasses the [5]Ti si

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Rama, Krishna Varma Lanke, Arnuri Srinivasulu, Naidu Gurugubelli Swami, and Satya Swaroop Akkarrapu Gowtham. "Characterization of Copper MMC Reinforced with SiC and Graphite in Equal Proportion Made by the Powder Metallurgy Route." i-manager's Journal on Material Science 10, no. 3 (2022): 38. http://dx.doi.org/10.26634/jms.10.3.19079.

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Powder metallurgy is playing a very important role in the manufacturing industry. In this research, an attempt is made with copper Metal Matrix Composites (MMC) reinforced with an equal proportion of Silicon Carbide (SiC) and graphite powders. The powders are taken in such a way that the reinforcement weight percentage varies from 0 to 10%. The materials are fabricated through the powder metallurgy route. The powder mixtures are blended and then compacted with a uniaxial pressure of 500 MPa to make the green compacted composites with different compositions. The dimensions of all samples are 25

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