Relevant bibliographies by topics / Compositions, proportion

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Compositions, proportion'

Author: Grafiati
Published: 28 July 2024
Last updated: 31 July 2025

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Journal articles on the topic "Compositions, proportion"

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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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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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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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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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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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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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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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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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Dissertations / Theses on the topic "Compositions, proportion"

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Hellmuth, Daniel F. "Poetry and the art of building : Goethe's morphology as applied to architecture." Thesis, Georgia Institute of Technology, 1986. http://hdl.handle.net/1853/24077.

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Brewster, Bryan Jack. "Architecture, music, and the rules of harmonic proportion." Thesis, Georgia Institute of Technology, 1990. http://hdl.handle.net/1853/15829.

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Hart, William Steven. "The order of dis-order." Thesis, Georgia Institute of Technology, 1989. http://hdl.handle.net/1853/23080.

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Melson, Edward. "Compositional strategies in mensuration and proportion canons, ca. 1400 - ca. 1600." Thesis, McGill University, 2009. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=32503.

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This thesis presents a detailed list of mensuration and proportion canons written between 1400 and 1600 and an analysis of several of those canons. Proportion canons are a subset of mensuration canons, pieces in which one melody, under different rhythmic interpretations according to the rules of mensuration, appears simultaneously in more than one voice. The type of mensuration and proportion canons discussed in this thesis display simultaneous entry of the voices: all voices begin together and sing throu
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Stklyanina, L. V., and P. C. Kalyan. "Antropometric proportions and body composition in young Indian and Nigeria females." Thesis, Сумський державний університет, 2013. http://essuir.sumdu.edu.ua/handle/123456789/31966.

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The aim of the study is to establish the constitutional proportions of the axial and appendicular skeleton among female Indian and Nigerian students. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/31966
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He, Weiling. "Flatness transformed and otherness embodied: a study of John Hejduk's Diamond Museum and Wall House 2 across the media of painting, poetry. architectural drawing and architectural space." Diss., Georgia Institute of Technology, 2005. http://hdl.handle.net/1853/36608.

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To study architectural space in relation to other works of art, the author aims at understanding how meaning depends upon the medium within which it is formulated. More importantly, the process of re-stating a work from one medium to another requires analytically rigorous study at the level of design thinking. In this thesis, Piet Mondrian’s sixteen Diamond Compositions, George Braque’s Studio Series, and Jean Auguste Dominique Ingres’s Comptesse d'Haussonville will be studied as points of departure of John Hejduk¡’s two sets of architectural projects: the Diamond Series and the Wall House Ser
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Simmons, Robert James. "The architecture of an instant." Thesis, Georgia Institute of Technology, 1988. http://hdl.handle.net/1853/21608.

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Sanders, Elizabeth J. "Designing with time : electronic simulation of architectural procession." Thesis, Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/21652.

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Todd, Laura Ruth. "Spin-offs in the architectural design process." Thesis, Georgia Institute of Technology, 1985. http://hdl.handle.net/1853/21763.

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McCarthy, William Norman. "The architecture of the church remembered." Thesis, Georgia Institute of Technology, 1991. http://hdl.handle.net/1853/22403.

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Books on the topic "Compositions, proportion"

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author, Iori Ivo, and Ottoni Federica 1977 author, eds. Scientia abscondita: Arte e scienza del costruire nelle architetture del passato. Marsilio, 2019.

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Pierre, Micheloni, and Pinon P, eds. Forme et déformation des objets architecturaux et urbains. Parenthèses, 2006.

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Yŏng-hun, Sin, and Yŏng-hun Sin. Hanok ŭi chŏngsim. Kwangudang, 1985.

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Thomas, Schloz, and Fraunhofer-Gesellschaft. Informationszentrum Raum und Bau, eds. Proportion und Harmonie in der Baukunst. IRB, 1985.

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Curtis, Nathaniel Cortlandt. The secrets of architectural composition. Dover Publications, 2011.

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Wittkower, Rudolf. Architectural principles in the age of humanism. 4th ed. Academy, 1988.

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Giorgio, Vasari. Proporzioni. Archivio Guido Izzi, 1989.

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Rubio, Rubén García. Arquitectura sustractiva. Edited by Fundación Cultural del Colegio Oficial de Arquitectos de León. Funcoal, 2011.

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Association, Architectural Humanities Research, ed. Scale: Imagination, perception, and practice in architecture. Routledge, 2012.

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Eran, Neuman, ed. Performalism: Form and Performance in Digital Architecture. Routledge, 2011.

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Book chapters on the topic "Compositions, proportion"

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Lovell, David, Warren Müller, Jen Taylor, Alec Zwart, and Chris Helliwell. "Proportions, Percentages, PPM: Do the Molecular Biosciences Treat Compositional Data Right?" In Compositional Data Analysis. John Wiley & Sons, Ltd, 2011. http://dx.doi.org/10.1002/9781119976462.ch14.

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Azevedo Rodrigues, Luis, Josep Daunis-i-Estadella, Glòria Mateu-Figueras, and Santiago Thió-Henestrosa. "Flying in Compositional Morphospaces: Evolution of Limb Proportions in Flying Vertebrates." In Compositional Data Analysis. John Wiley & Sons, Ltd, 2011. http://dx.doi.org/10.1002/9781119976462.ch17.

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Kedzierski, Mikaël, Maialen Palazot, Lata Soccalingame, et al. "Chemical composition of microplastics floating on the Mediterranean Sea surface." In Ninth International Symposium “Monitoring of Mediterranean Coastal Areas: Problems and Measurement Techniques”. Firenze University Press, 2022. http://dx.doi.org/10.36253/979-12-215-0030-1.44.

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Main objective of this study was to describe chemical composition of MP collected in surface waters of Mediterranean Sea. Samples were collected by manta net during Tara Mediterranean expedition (June–Nov.2014). Our results pointed to certain homogeneity at Mediterranean Sea scale. Main polymers collected were polyethylene (PE) (67.3±2.4%), polypropylene (20.8±2.1%), polystyrene (3.0±0.9%). Still, discrepancies, confirmed by literature, were observed at mesoscale level. Thus, in North Tyrrhenian Sea, proportion of PE was significantly lower than average value of Mediterranean Sea (57.9±10.5%).
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Busse Berger, Anna Maria. "The Role of Proportions in the Composition and Memorization of Isorhythmic Motets." In Études Renaissantes. Brepols Publishers, 2012. http://dx.doi.org/10.1484/m.er-eb.4.00271.

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Sæter, Gyda Elisa, Viktoria Stray, Steffen Almås, and Yngve Lindsjørn. "The Role of Team Composition in Agile Software Development Education: A Gendered Perspective." In Lecture Notes in Business Information Processing. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-61154-4_12.

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AbstractTeam composition is a critical factor influencing collaboration within agile software development. This study investigates the impact of gender distribution on teamwork quality in software engineering capstone courses. We examined the experiences of 240 students organized into 40 teams during an agile project course. We analyzed two surveys, one conducted before team composition and one at the end of the project work. As much as 91% of the students chose to use the practice of conducting stand-up meetings in their project work and the majority were satisfied with the practice. Further,
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Ovcharenko, Vladimir E., Konstantin V. Ivanov, and Bao Hai Yu. "Formation of a Nanostructured Hardened Surface Layer on the TiC-(Ni-Cr) Metal-Ceramic Alloy by Pulsed Electron-Beam Irradiation." In Springer Tracts in Mechanical Engineering. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-60124-9_18.

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AbstractThe efficiency and service life of products made from metal-ceramic tool alloys and used as cutting tools and friction units are determined by a combination of physical and strength properties of their surface layers with a thickness of up to 200 μm. Therefore, much attention is paid to their improvement at the present time. An effective way to increase the operational properties of the metal-ceramic alloy products is to modify the structure and the phase composition of the surface layers by forming multi-scale internal structures with a high proportion of low-dimensional (submicro and
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Kępniak, Maja. "Recycled Cement Concrete as an Eco-Friendly Aggregate in Polymer Composite – Application Feasibility." In Springer Proceedings in Materials. Springer Nature Switzerland, 2024. http://dx.doi.org/10.1007/978-3-031-72955-3_20.

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AbstractOver the years, the development of sustainable and ecofriendly concrete has been found in the reuse of construction and demolition materials. One such waste is recycled aggregate from cement concrete structure demolition process. This paper analyzes the effect of substitution of natural stone aggregate with recycled aggregate in polymer composites. An experimental plan for the mixtures was prepared. Technological characteristics (setting course, consistency) and strength characteristics (flexural strength and compressive strength) were analyzed. The obtained results were statistically
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Elío, Javier, Marina Georgati, Henning S. Hansen, and Carsten Keßler. "Migration Studies with a Compositional Data Approach: A Case Study of Population Structure in the Capital Region of Denmark." In Computational Science and Its Applications – ICCSA 2022 Workshops. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-10545-6_39.

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AbstractComputing percentages or proportions for removing the influence of population density has recently gained popularity, as it offers a deep insight into compositional variability. However, data are constrained to a constant sum and therefore are not independent observations, a fundamental limitation for applying standard multivariate statistical tools. Compositional Data (CoDa) techniques address the issue of standard statistical tools being insufficient for the analysis of closed data (i.e., spurious correlations, predictions outside the range, and sub-compositional incoherence) but the
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Helle, Gerhard, Maren Pauly, Ingo Heinrich, Karina Schollän, Daniel Balanzategui, and Lucas Schürheck. "Stable Isotope Signatures of Wood, its Constituents and Methods of Cellulose Extraction." In Stable Isotopes in Tree Rings. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-92698-4_5.

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AbstractIn this chapter, we give some basic information on the chemical and isotopic properties of wood constituents and describe their relative contribution to the isotopic signature of wood. Based on these considerations we review studies that have compared stable isotope signals of wood with those of corresponding cellulose. We exemplify how relationships of wood-based tree-ring stable isotope sequences with climate can be affected by varying proportions of wood constituents like cellulose, lignin and extractives. A majority of benchmarking studies suggests that cellulose extraction may not
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Riddershom Bargum, Anders, Oddur Ingi Kristjánsson, Péter Babó, Rasmus Eske Waage Nielsen, Simon Rostami Mosen, and Stefania Serafin. "Spatial Audio Mixing in Virtual Reality." In Sonic Interactions in Virtual Environments. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-031-04021-4_9.

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AbstractThe development of Virtual Reality (VR) systems and multimodal simulations presents possibilities in spatial-music mixing, be it in virtual spaces, for ensembles and orchestral compositions or for surround sound in film and music. Traditionally, user interfaces for mixing music have employed the channel-strip metaphor for controlling volume, panning and other audio effects that are aspects that also have grown into the culture of mixing music spatially. Simulated rooms and two-dimensional panning systems are simply implemented on computer screens to facilitate the placement of sound so
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Conference papers on the topic "Compositions, proportion"

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Halada, G. P., Donggil Kim, and C. R. Clayton. "A Surface Analytical Study of the Influence of Nitrogen on the Electrochemical Passivation of High Ni Stainless Steels and Thin Mo-Ni Films." In CORROSION 1995. NACE International, 1995. https://doi.org/10.5006/c1995-95536.

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Abstract The influence of Mo and N on the passivation of Ni-bearing austenitic stainless steels Fe20Cr20Ni, Fe20Cr20Ni6Mo and Fe20Cr20Ni6Mo0.2N in deaerated 0.1M HCl + 0.4M NaCl was investigated with the aid of electrochemical and X-ray Photoelectron Spectroscopic (XPS) analysis. Electrochemical analyses showed that Mo and N improved passivation characteristics through an apparent synergism. Evidence was found of a compositional reorganization of stainless steels in the atomic layers of the alloy immediately below the passive film. Ni and Mo appear to become enriched in proportions which sugge
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Islam, Moavin, Wayne McGaulley, and Mike Evans. "Compositional Analysis of Flash Rust Formed on Carbon Steel after Waterjetting." In CORROSION 2006. NACE International, 2006. https://doi.org/10.5006/c2006-06295.

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Abstract When steel components are cleaned by high-pressure (HP) or ultra high pressure (UHP) waterjetting the surface begins to oxidize or ‘flash rust’ within a short period of time. The color of the flash rust is typically orange, red, or brown of various shades depending on the color of the underlying steel, the nature of the surrounding environment, and the duration of exposure to the environment. Standard terminology has been developed by NACE and SSPC to categorize the grade (or level) of flash rust. These are light flash rust (LFR), moderate (or medium) flash rust (MFR) and heavy flash
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Wu, Xiaodan, and Brian Gleeson. "Compositional Factors Affecting the High-Temperature Degradation Behavior of Alloys Exposed to Relatively High PS2 – Low PO2 Atmospheres." In CORROSION 2013. NACE International, 2013. https://doi.org/10.5006/c2013-02850.

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Abstract The sulfidation rates of most metals and alloys are generally 104–106 times higher than their oxidation rates, depending on temperature (i.e., the activation energies are different). As a result, the maximum temperature for long-term service of metallic materials exposed to high-PS2 / low-PO2 environments, such as those associated with low-NOx combustion systems, is generally considered to be about 600˚C (much lower than for oxidizing environments). However, as determined in this study, the extent of sulfidation attack of a given alloy is critically dependent on the amounts of Cr and
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Futas, Peter, Alena Pribulova, Jozef Petrik, Peter Peter Blasko, and Maria Mihalikova. "USE OF REGRESSION ANALYSIS AND SIMULATION TO OPTIMIZE THE COMPOSITION OF THE CAST IRON CHARGE." In 24th SGEM International Multidisciplinary Scientific GeoConference 24. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/1.1/s04.58.

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Cast iron GG30 (EN-GJL-300C) has excellent mechanical properties and good machinability. It can be used in many industries such as hydraulics, engineering, automotive, oil and gas mining, and processing. It is suitable for the production of compressor and pump components. Return material, technological residue, iron scrap, fractional cast iron, liquid metal, and alloying components can be used as input raw materials in the production of cast iron, the first three were taken into account in the analysis. In practice, it is possible to choose their different ratio. At the same time, their chemic
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Gjertsen, Sondre Borg, Attila Palencsár, and Tor Hemmingsen. "Investigation of MEG-Water Co-Condensation by In-Situ Refractometry." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-19285.

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Abstract Top-of-line corrosion (TLC) in carbon steel pipelines carrying moist gas is caused by the condensation of water in the presence of CO2 and is difficult and expensive to mitigate. Modeling TLC allows operators to plan mitigation strategies that may reduce costs and production delays. The TLC rate is proportional to the rate of condensation and is affected by the solubility of the corrosion products. When Mono-Ethylene Glycol (MEG) is present, it evaporates and condenses with the water. Depending on mass transport rates, the gas phase may get depleted of MEG. Equilibrium calculations ma
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Shishkov, Toma, Emil Dimitrov, and Ekaterina Filchev. "FOREST SOILS FROM SREDNA GORA MOUNTAIN IN BULGARIA." In 24th SGEM International Multidisciplinary Scientific GeoConference 2024. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/3.1/s13.29.

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The soils from the central part of Sredna Gora Mountain in Bulgaria were studied aiming to establish the occurrence of contemporal soil forming processes occured in the forest ecosystem. Soils were analyzed to determine the carbon content, the soil organic matter composition and the total soil acidity. The precise soil classification based on the detail morphological diagnostic was carried out. The ecological conditions in forest ecosystem determine the mode of humic substances in the studies soils. Soils are characterized with low degree of humification and considerable amount of organic matt
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Baraiya, Nikhil Ashokbhai, Baladandayuthapani Nagarajan, and Satynarayanan R. Chakravarthy. "Experimental Investigation of Combustion Dynamics in a Turbulent Syngas Combustor." In ASME Turbo Expo 2017: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/gt2017-64849.

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In the present work, the proportion of carbon monoxide to hydrogen is widely varied to simulate different compositions of synthesis gas and the potential of the fuel mixture to excite combustion oscillations in a laboratory-scale turbulent bluff body combustor is investigated. The effect of parameters such as the bluff body location and equivalence ratio on the self-excited acoustic oscillations of the combustor is studied. The flame oscillations are mapped by means of simultaneous high-speed CH* and OH* chemiluminescence imaging along with dynamic pressure measurement. Mode shifts are observe
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Ding, Xiaoyi, Xiaojing Lv, and Yiwu Weng. "Performance Study on Intermediate Temperature Solid Oxide Fuel Cell and Gas Turbine Hybrid System Fueled With Biomass Gas." In ASME 2017 Power Conference Joint With ICOPE-17 collocated with the ASME 2017 11th International Conference on Energy Sustainability, the ASME 2017 15th International Conference on Fuel Cell Science, Engineering and Technology, and the ASME 2017 Nuclear Forum. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/power-icope2017-3346.

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In this work, the detailed model of intermediate temperature solid oxide fuel cell (IT-SOFC) and gas turbine (GT) hybrid system with biomass gas (wood chip gas) as fuel was built, with the consideration of fuel cell potential loss such as polarization loss and heat loss. Detailed performance of key component such as reformer, fuel cell and gas turbine of the hybrid system was studied under different biomass gas fuel compositions and steam/carbon ([S]/[C]) ratios. The results show that the hybrid system can reach the efficiency of 59.24% under the designed working condition. The biomass gas fro
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Ungureanu, Laurenţia, Daria Tumanova, and Grigore Ungureanu. "The seasonal dynamics of phytoplankton and water quality in the Prut River lower sector." In Xth International Conference of Zoologists. Institute of Zoology, Republic of Moldova, 2021. http://dx.doi.org/10.53937/icz10.2021.07.

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The article presents the results on qualitative and quantitative indicators of phytoplankton of the Prut River lower sector within the Republic of Moldova in 2018-2020. In phytoplankton compositions 72 species were identified. Seasonal and long-term patterns of phytoplankton development have been established in Prut River lower sector. The numbers of phytoplankton changed within the limits 1,06 to 20,32 mln. cell/l, with biomass 1,23-21,64 g/m3. The values of saprobic indexes, estimated on the basis of species-indicators (52 species) from phytoplankton composition, which are in proportion of 5
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Ungureanu, Laurentia, Daria Tumanova, and Grigore Ungureanu. "Dezvoltarea fitoplanctonului fluviului Nistru și lacului de acumulare Dubăsari în condițiile impactului factorilor naturali și antropici." In Simpozion "Modificări funcționale ale ecosistemelor acvatice în contextul impactului antropic și al schimbărilor climatice". Institute of Zoology, Republic of Moldova, 2021. http://dx.doi.org/10.53937/9789975151979.07.

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The article presents the results of study of qualitative and quantitative indicators of phytoplankton of the Dniester River within the Republic of Moldova and Dubasari reservoir in 2020. In phytoplankton compositions of the Dniester River were identified 64 species, Dubasari Lake – 56 species. The numbers of phytoplankton changed within the limits 0,39 to 16,99 mln. cel/l with biomass 0,7-17,19 g/m3 in Dniester River and in Dubasari Lake – 3,47-14,83 mln. cel/l with biomass 4,76-11,29 g/m3. The values of saprobic indexes, estimated on the basis of species-indicators from phytoplankton composit
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Reports on the topic "Compositions, proportion"

1

Bahar Baziki, Selva, María J. Nieto, and Rima Turk-Ariss. Sovereign portfolio composition and bank risk: the case of European banks. Banco de España, 2023. http://dx.doi.org/10.53479/33599.

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We extend the literature on the sovereign-bank nexus by examining the composition effects of sovereign portfolios on banks’ risk profile, unlike previous studies which generally analyzed the determinants of banks’ sovereign portfolios or the size effects of these portfolios. We also differ from previous studies with respect to the measures of risk considered and by covering a sample period that goes well beyond the global financial crisis (2009-2018). Drawing on granular data from the European Banking Authority, we find that banks are riskier when their portfolio includes a higher proportion o
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Cranfield, John, Thomas Hertel, James Eales, and Paul Preckel. Changes in the Structure of Global Food Demand. GTAP Working Paper, 2000. http://dx.doi.org/10.21642/gtap.wp01.

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A newly developed demand system is used to estimate the response of food and food product demand to per capita expenditure changes. The resulting Engel elasticities are then used to project food and food product demand in 2020 assuming per capita expenditure and population changes. Results suggest that while food expenditure is projected to grow, it accounts for a smaller proportion of total expenditure. Further analysis indicates change in the composition of food demand away from a grain and towards livestock is projected to occur in lower income countries in 2020.
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Vargas Martinez, Juan de Jesús, A. M. Sierra, Yesid Avellaneda Avellaneda, Olga Lucía Mayorga Mogollón, and Claudia Janeth Ariza Nieto. Establishment and production of ryegrass and clover in two Colombian highland regions. Corporación Colombiana de Investigación Agropecuaria - AGROSAVIA, 2018. http://dx.doi.org/10.21930/agrosavia.poster.2018.8.

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In Colombia, the specialized dairy systems are supported in forages use. However, edaphic and weather features are related with production and compositional quality of grasses. In this sense, it is important to recognize resilient fodder species to pastoral systems. The objective was to evaluate the establishment (covert proportion (%, Cp) and adaptation grade (0 to 3 scale, Ag) and production (dry matter yield (kg DM.ha-1, Dm) and net energy lactation (Mcal.kg DM-1 , Nl) of five perennial ryegrasses (three diploid and two tetraploid) and three clovers (two reds and one white) in two regions o
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Fonseca, Raquel, and Markus Poschke. L’évolution et la composition de la richesse des ménages Québécois. CIRANO, 2023. http://dx.doi.org/10.54932/hqtc4594.

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Cette note de recherche examine l'évolution et la composition de la richesse des ménages au Québec, en comparaison avec l'Ontario et le Canada, en utilisant les données de l'Enquête sur la sécurité financière (ESF) pour les années 1999, 2005, 2012, 2016 et 2019. Les principaux points à retenir sont les suivants : 1. Évolution de la richesse - La richesse des ménages québécois était déjà inférieure à celle de l'Ontario en 1999, et cette disparité s'est accrue au fil du temps. - Cette croissance de l’écart des richesses n’est pas due à de simples différences de croissance dans le nombre de ménag
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Brenan, J. M., K. Woods, J. E. Mungall, and R. Weston. Origin of chromitites in the Esker Intrusive Complex, Ring of Fire Intrusive Suite, as revealed by chromite trace element chemistry and simple crystallization models. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/328981.

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To better constrain the origin of the chromitites associated with the Esker Intrusive Complex (EIC) of the Ring of Fire Intrusive Suite (RoFIS), a total of 50 chromite-bearing samples from the Black Thor, Big Daddy, Blackbird, and Black Label chromite deposits have been analysed for major and trace elements. The samples represent three textural groups, as defined by the relative abundance of cumulate silicate phases and chromite. To provide deposit-specific partition coefficients for modeling, we also report on the results of laboratory experiments to measure olivine- and chromite-melt partiti
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Belzil, Christian, Jörgen Hansen, and Julie Pernaudet. L’effet du coût des études supérieures sur les choix de filières stratégiques, scientifiques et mathématiques au Québec et au Canada. CIRANO, 2025. https://doi.org/10.54932/goth7434.

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Une politique favorisant de faibles frais de scolarité a-t-elle un effet sur la fréquentation des filières scientifiques et quantitatives ? Nous estimons l’effet causal d’une variation des coûts des études supérieures et séparons les effets de composition, mesurés par les différences de compétences entre les étudiants attirés par l’université à cause de la baisse des coûts, des effets structurels (ou comportementaux) mesurés par les changements de filière universitaire induits par cette même baisse. Nos résultats indiquent que toute expansion du système universitaire induite par de nouveaux ét
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Julian, Christopher. Same-sex Married and Cohabiting Couples Raising Children, 2023. National Center for Family and Marriage Research, 2025. https://doi.org/10.25035/ncfmr/fp-25-07.

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Using data from the 2023 American Community Survey (ACS), this Family Profile estimates the proportion of same- and different-sex couples raising children, disaggregated by relationship type (i.e., cohabiting or married) and age (i.e., 18-29, 30-39, 40-49, and 50-59). For this analysis, children are defined as biological, adopted, or stepchildren of the household head[1] under the age of eighteen. Couples’ sex composition is coded directly using the recently revised household roster (Kreider & Gurrentz, 2019). To focus on couples raising minor children, we restrict our sample to those in w
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Radvánszki, András. The 2021 Census in North Macedonia: Debates and Tensions. Külügyi és Külgazdasági Intézet, 2022. http://dx.doi.org/10.47683/kkielemzesek.ke-2022.31.

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North Macedonia has successfully conducted a national census after a twenty-year hiatus. The census shows a catastrophic demographic decline and a sharp fall in the proportion of ethnic Macedonians. It has also had an important influence on the debate regarding the country’s ethnic composition and powersharing mechanism, which has been going on for two decades. The results of the census give new momentum to the political cohabitation dictated by the Ohrid Framework Agreement and the incessant fights between the representatives of the Macedonian and Albanian communities for more political influ
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Flabbi, Luca, Scott Abrahams, and Claudia Piras. Female Corporate Leadership in Latin America and the Caribbean Region: Representation and Firm-Level Outcomes. Inter-American Development Bank, 2016. http://dx.doi.org/10.18235/0011717.

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This paper collects an original database of publicly listed companies to determine prevailing gender ratios among board members and executives in Latin America and the Caribbean region (LAC). Women are as under-represented in LAC as in the United States, but much less so in the Caribbean. It is then estimated whether companies with women board members are more likely to appoint women executives. This is the case in LAC, but the results are driven strongly by Caribbean companies. The paper finally estimates whether measures of female leadership at the firm are correlated with company performanc
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Kingston, A. W., C. Jiang, X. Wang, and T. E. Hobbs. Chemical compositions of flowback and produced water from the Duvernay shale and Montney tight reservoir developments in Western Canada: potential for lithium resources from wastewater. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/331878.

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Increasing global demand for lithium coupled with a need to characterize domestic resources necessitates an expanded assessment for lithium production from unconventional sources. Oilfield brines are known to host elevated lithium concentrations and represent a prime candidate for lithium extraction. The purpose of this report is to expand our knowledge of brine chemistry within the Western Canadian Sedimentary Basin with a focus on the Montney and Duvernay formations. Specifically wells that are undergoing hydrocarbon production stimulated via hydraulic fracturing (HF) are sampled with the ev
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