Relevant bibliographies by topics / Chemical macro composition

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  1. Journal articles
  2. Book chapters
  3. Conference papers
  4. Reports

Academic literature on the topic 'Chemical macro composition'

Author: Grafiati
Published: 2 June 2025
Last updated: 31 July 2025

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Journal articles on the topic "Chemical macro composition"

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Yuldasheva, Shokhida Saitovna, Nodira Abdulxamitovna Yunuskhodjaeva, Shakhriddin Shavkat Ugli, and Alimjon Davlatboevich Matchanov. "Study Of The Chemical Composition Of The Liquid Extract "Extradent"." American Journal of Medical Sciences and Pharmaceutical Research 03, no. 03 (2021): 1–11. http://dx.doi.org/10.37547/tajmspr/volume03issue03-01.

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The quantitative content of flavonoids of the aerial part of the plant was determined by high performance liquid chromatography (HPLC). Using the inductively coupled plasma mass spectrometry (ICP-MS) method, the quantitative content of vital macro-and microelements in the various vegetative organs of the plant was determined.
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Ding, Beidou, Naiqiang Xiao, Shuxun Zhang, and Yong Wang. "Research on NDT Technology in Inference of Steel Member Strength Based on Macro/Micro Model." Mathematical Problems in Engineering 2017 (2017): 1–11. http://dx.doi.org/10.1155/2017/4393279.

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In consideration of correlations among hardness, chemical composition, grain size, and strength of carbon steel, a new nondestructive testing technology (NDT) of inferring the carbon steel strength was explored. First, the hardness test, chemical composition analysis, and metallographic analysis of 162 low-carbon steel samples were conducted. Second, the following works were carried out: (1) quantitative relationship between steel Leeb hardness and carbon steel strength was studied on the basis of regression analysis of experimental data; (2) influences of chemical composition and grain size o
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Golijan, Jelena, and Mile Sečanski. "Organic plant products are of more improved chemical composition than conventional ones." Food and Feed Research 48, no. 2 (2021): 79–117. http://dx.doi.org/10.5937/ffr48-30907.

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Considering the negative effects of conventional agricultural production, organic food production is a sustainable approach to production, which preserves the environment and protects human health. Organic products are products of high quality, without residues of pesticides and other harmful chemicals. Through the review of literature data, the authors of this paper presented a comparative study on the chemical compositions of organically vs. conventionally grown plants and their products. Dry matter, nitrates, sugars, vitamins, macro-and microelements, as well as, secondary metabolites have
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Golijan, Jelena, and Mile Sečanski. "Organic plant products are of more improved chemical composition than conventional ones." Food and Feed Research, no. 00 (2021): 1. http://dx.doi.org/10.5937/ffr0-30907.

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Considering the negative effects of conventional agricultural production, organic food production is a sustainable approach to production, which preserves the environment and protects human health. Organic products are products of high quality, without residues of pesticides and other harmful chemicals. Through the review of literature data, the authors of this paper presented a comparative study on the chemical compositions of organically vs. conventionally grown plants and their products. Dry matter, nitrates, sugars, vitamins, macro-and microelements, as well as, secondary metabolites have
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Manera, Daniel Bomfim, Tadeu Vinhas Voltolini, Daniel Ribeiro Menezes, and Gherman Garcia Leal de Araújo. "Chemical Composition of Drilled Wells Water for Ruminants." Journal of Agricultural Science 8, no. 12 (2016): 127. http://dx.doi.org/10.5539/jas.v8n12p127.

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This study aimed to evaluate the chemical composition of water wells and to discuss the results in relation to nutritional requirements and tolerance limits of domestic ruminants. Ten samples of water wells (three replicates) from Brazilian semi-arid were collected and analyzed for their macro and trace minerals levels. A variation was found in the mineral composition of the waters and the macro minerals presenting highest levels were Cl, Mg, Ca and Na, while the predominant trace minerals were Fe and Mn. The concentration of the examined minerals can provide a small contribution to the animal
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Belkin, P. A. "CHEMICAL COMPOSITION OF SPRING DISCHARGE IN THE AREA OF MINING WASTE STORAGE AND POTASSIUM SALT ENRICHMENT." Вестник Пермского университета. Геология 19, no. 3 (2020): 232–40. http://dx.doi.org/10.17072/psu.geol.19.3.232.

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Mining and processing of potassium salts in humide regions is inevitably connected with the disturbance of natural hydrochemical conditions. In order to describe the chemical composition of groundwater discharged in the immediate vicinity of potash waste storage facilities, spring flow studies were conducted, including sampling and analysis of the macro- and micro-component composition of eight springs over the period 2016-2018. A general description of the chemical composition of spring runoff waters is given, and correlations between the content of various components of their composition are
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Scherbak, O. V., A. P. Lobasov, and L. A. Kalinichenko. "EVOLUTION OF MACROCHEMICAL COMPOSITION OF DRINKING GROUNDWATER UNDER ANTHROPOGENIC LOAD IN KHERSON REGION." Odesa National University Herald. Geography and Geology 19, no. 3(22) (2015): 289–98. http://dx.doi.org/10.18524/2303-9914.2014.3(22).40436.

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Purpose. The purpose of the research is to determine temporal regularities of the chemical composition including main macro components and mineralization of the drinking groundwater at the Upper Miocene aquifer complex in Dniper River Basin (Kherson region).Methodology. Geoinformational and statistical approach were used in this study. The methodological approach was proposed to build digital surface of water salinity field and macro components. The input data for modelling were spatial objects such as borehole.Finding. According to the modeling data the average macro components and salt compo
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Imamova, Dilfuza A., and Shamsiya A. Imamova. "PRIMARY RESULTS OF THE COMPOSITION OF CHEMICAL ELEMENTS OF SOME WATER AND SOIL SAMPLES OF THE AYDAR-ARNASOY LAKE SYSTEM." Oriental Journal of Geography 03, no. 01 (2023): 1–9. http://dx.doi.org/10.37547/ojg/vol-03issue-01-01.

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Hydrochemical analyzes of water content and chemical analyzes of soil samples were carried out using the neutron activation method, taking into account the water input-output balance in the Aydar-Arnasoy lake system. As a result of the analysis of the chemical element composition of water and soil samples taken from the Boymurad mound of the Aydar-Arnasoy lake system and Arnasoy district (Omon Keldi), 25 macro- and microelements were found in the water samples and 33 macro- and microelements were found in the soil samples. On the basis of the primary results, preliminary data on the monitoring
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Perrino, Cinzia, Maria Catrambone, and Silvia Canepari. "Chemical Composition of PM10 in 16 Urban, Industrial and Background Sites in Italy." Atmosphere 11, no. 5 (2020): 479. http://dx.doi.org/10.3390/atmos11050479.

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Italy is characterized by a very variable configuration in terms of altitude, proximity to the sea, latitude and the presence of industrial plants. This paper summarizes the chemical characterization of PM10 obtained from 38 sampling campaigns carried out in 16 sites in Italy during the years 2008–2018. Chemical determinations include all macro-components (six macro-elements, eight ions, elemental carbon and organic carbon). The sum of the individual components agrees well with the PM10 mass. The chemical composition of the atmospheric aerosol clearly reflects the variety in the Italian territ
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Nafisi, S., O. Lashkari, Joseph Langlais, and R. Ghomashchi. "The Impact of Partial Drainage on Chemical Composition of 356 Al-Si Alloy." Materials Science Forum 519-521 (July 2006): 1765–70. http://dx.doi.org/10.4028/www.scientific.net/msf.519-521.1765.

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A novel method is introduced to investigate the macro-segregation in 356 Al-Si alloy. In this method, a portion of the remaining liquid is extracted during solidification of the alloy from the bottom orifice of a cylindrical sample. Different parts of the sample plus the extracted material are chemically analyzed and a good correlation between the chemical composition and the predicted values from binary Al-Si diagram was obtained. Comparing the chemical composition of the decanted alloy in the cast piece with those of the 356 standard range has shown that even with 15% of the liquid extractio
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Book chapters on the topic "Chemical macro composition"

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Hale, Robert C., Meredith E. Seeley, Ashley E. King, and Lehuan H. Yu. "Analytical Chemistry of Plastic Debris: Sampling, Methods, and Instrumentation." In Microplastic in the Environment: Pattern and Process. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-78627-4_2.

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AbstractApproaches for the collection and analysis of plastic debris in environmental matrices are rapidly evolving. Such plastics span a continuum of sizes, encompassing large (macro-), medium (micro-, typically defined as particles between 1 μm and 5 mm), and smaller (nano-) plastics. All are of environmental relevance. Particle sizes are dynamic. Large plastics may fragment over time, while smaller particles may agglomerate in the field. The diverse morphologies (fragment, fiber, sphere) and chemical compositions of microplastics further complicate their characterization. Fibers are of grow
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Silva, Anuradha, Shanaka Baduge, and Priyan Mendis. "Performance Evaluation of the Quantification of Cement Microphases Using Energy Dispersive X-ray Spectroscopy Imaging." In Lecture Notes in Civil Engineering. Springer Nature Switzerland, 2025. https://doi.org/10.1007/978-3-031-69626-8_29.

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AbstractCement manufacturing is one of the widest industries in the world and yet largely contributes to the global CO2 emissions. As a result, introducing low carbon sustainable concrete designs without compromising performance has become one of the greatest challenges over the last few decades. This complexity was majorly caused by heterogeneity of concrete due to the existence of cementitious particles, fibers, or fine filler materials. Further, this multi-scale material heterogeneity of concrete influences the performance of concrete at macro levels and makes it more complicated to underst
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Chiplonkar, Shashi A. "Macro and Micronutrients: An Overview." In Micronutrients: The Key to Good Health. BENTHAM SCIENCE PUBLISHERS, 2022. http://dx.doi.org/10.2174/9789815040258122010005.

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We eat food for survival, to get enough energy to work and maintain good health. This is possible through a variety of chemical substances in food, such as nutrients, non-nutritional compounds and also certain helpful microorganisms. These food constituents assist in producing energy from food and play specific roles in normal body functioning, growth and development. We spend energy in carrying out internal body functions such as digestion, and in doing physical activities. The concept of energy balance to maintain desirable body weight is explained in this chapter. Amongst nutrients, carbohy
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Dibenedetto, Angela, and Antonella Colucci. "Aquatic Biomass for the Production of Fuels and Chemicals." In Materials for a Sustainable Future. The Royal Society of Chemistry, 2012. http://dx.doi.org/10.1039/bk9781849734073-00215.

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This chapter highlights the potential of aquatic biomass as a source of chemicals and fuels. Aquatic biomass can be considered an interesting alternative to fossil fuels because with respect to terrestrial or residual biomass it has a higher solar energy utilisation efficiency (6–8% versus 1.5–2.2%). Aquatic biomass, i.e. micro-algae, macro-algae and plants, has a chemical composition that depends on the species and on the light, temperature, nutrients and salinity, and also biotic interactions, so it is better to use a selected cultivated strain in order to have an optimal energetic yield. In
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Barbu, Marius C., Roman Reh, and Ayfer Dönmez Çavdar. "Non-Wood Lignocellulosic Composites." In Materials Science and Engineering. IGI Global, 2017. http://dx.doi.org/10.4018/978-1-5225-1798-6.ch038.

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It would seem that with appropriate treatment almost any agricultural residue may be used as a suitable raw material for the wood-based panels like particle- and fiberboard production. The literature on wood-ligno-cellulose plant composite boards highlights steady interest for the design of new structures and technologies towards products for special applications with higher physical-mechanical properties at relatively low prices. Experimental studies have revealed particular aspects related to the structural composition of ligno-cellulose materials, such as the ratio between the different com
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Barbu, Marius C., Roman Reh, and Ayfer Dönmez Çavdar. "Non-Wood Lignocellulosic Composites." In Research Developments in Wood Engineering and Technology. IGI Global, 2014. http://dx.doi.org/10.4018/978-1-4666-4554-7.ch008.

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It would seem that with appropriate treatment almost any agricultural residue may be used as a suitable raw material for the wood-based panels like particle- and fiberboard production. The literature on wood-ligno-cellulose plant composite boards highlights steady interest for the design of new structures and technologies towards products for special applications with higher physical-mechanical properties at relatively low prices. Experimental studies have revealed particular aspects related to the structural composition of ligno-cellulose materials, such as the ratio between the different com
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Dushchak (Benderska), Olha, and Tetiana Levkivska. "SECONDARY PRODUCTS OF TOMATO PROCESSING IN THE TECHNOLOGIES OF FOOD PRODUCTS." In Development of scientific, technological and innovation space in Ukraine and EU countries. Publishing House “Baltija Publishing”, 2021. http://dx.doi.org/10.30525/978-9934-26-151-0-33.

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The chapter is devoted scientific substantiation by use secondary tomato resources. The theoretical and practical aspects by use tomatoes technical maturity and seeds in the justification for absract improved technology tomato raw include speciations and technological properties. Propose use recycling tomatoes for food semi-processed food, namely, the tomato seeds. The features chemical composition of tomato seeds are established. The use of secondary raw materials formed in the production of tomato products as a source of biologically active substances with their subsequent use in food techno
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"XRF analyses of ancient coins from South Bulgaria (RIM Haskovo)." In Book of Abstracts - RAD 2025 Conference. RAD Centre, Niš, Serbia, 2025. https://doi.org/10.21175/rad.abstr.book.2025.28.7.

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The aim of this investigation is to obtain information about the elemental composition of a set of ancient bronze coins. This will help for their numismatic expertise and to draw conclusions about the alloys used technology of production, authenticity, etc. The studied collection includes of a total of 65 ancient bronze coins: 45 from Maroneia, Philip II Macedonian, Alexander the Great (4 coins) and the rest from Messambria. The coins are dated to the 4th-3rd c. BCE and are found as illegal traffic in Bulgaria and provided to the Haskovo Regional Museum of History. The analysis of the elementa
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Wang, Yuwei, Zhenxin Liang, Jia Yang, Li Lu, and Qian Sun. "Study on the Microstructure and Properties of T91 Steel Pipe after 96000 Hours Service Under High Temperature and High Pressure." In Advances in Transdisciplinary Engineering. IOS Press, 2023. http://dx.doi.org/10.3233/atde230448.

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The microstructure, macro morphology, oxide layer morphology and mechanical properties of T91 steel after 96000 hours of service at high temperature and high pressure were investigated. The results show that the service steel pipe has good macroscopic appearance, no obvious wear, scratch, bulge, deformation, surface crack and other abnormal features, and no obvious thinning of wall thickness. The chemical composition of different pipe sections meets the standard, and the microstructure is mainly tempered martensite, which is evenly distributed, with a small amount of massive ferrite and no obv
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Tangolar, Serpil, Semih Tangolar, Metin Turan, Mikail Atalan, and Melike Ada. "The Effects of Different Substrates with Chemical and Organic Fertilizer Applications on Vitamins, Mineral, and Amino Acid Content of Grape Berries from Soilless Culture." In Soilless Culture [Working Title]. IntechOpen, 2022. http://dx.doi.org/10.5772/intechopen.102345.

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Due to its advantages, soilless cultivation has been used for both early- and late-maturing grape varieties. High nutritional and energy value is one of the strongest features that make the grape an effective component of agriculture and the human diet. Therefore, it was thought that it would be useful to determine the nutrient content of the berries in a soilless culture study carried out on the Early Cardinal grape variety. One-year-old vines were trained to a guyot system and grown in 32-liter plastic pots containing four different solid growing media, namely, zeolite, cocopeat, and zeolite
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Conference papers on the topic "Chemical macro composition"

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Weisser, Ken, Andrew G. Howell, and Paul R. Puckorius. "Stagnant Water Corrosion - Case Histories of Failures in Non-Flowing Water Systems." In CORROSION 1993. NACE International, 1993. https://doi.org/10.5006/c1993-93264.

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Abstract Stagnant water frequently results in corrosion mechanisms which are very different from those produced by flowing water from the same source. Flowing water is characterized by dissolved constituents which are relatively constant in composition, whereas the chemical composition of stagnant water changes due to equilibrium processes. Some of the more common stagnant water corrosion problems result from: fouling by macro-organisms or sediment, microbiologically-influenced corrosion (MIC), periodic introduction of soluble gases, and under-deposit corrosion.
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Onache, Petronela Anca, Alina Florea, Dorin Ioan Sumedrea, and Ovidiu Tita. "CHEMOMETRIC PROFILE OF WHITE AND RED WINES FROM DIFFERENT AREAS OF ROMANIA." In SGEM International Multidisciplinary Scientific GeoConference 24. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/6.1/s25.20.

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In this research, we studied wines from eleven wine regions of Romania (Stefanesti, Dragasani, Dealul Mare, Minis, Blaj, Babadag, Focsani, Tarnave, Silagiu, Iasi, Cotnari), but also for two years of different production (2019 and 2021), to observe their chemometric profile according to the geographical origin. The chemical composition was determined for 40 white wines and 34 red wines. The studied chemical parameters were alcohol concentration, wine density, total acidity, free and total sulfur dioxide, non-reducing dry extract, glucose and fructose, pH, organic acids (tartaric acid, malic and
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Salcu, Mariana. "Increasing the Lifetime of J55 Tubing by Improving Steel Metallurgy Laboratory and Field Tests Achievements." In CORROSION 2013. NACE International, 2013. https://doi.org/10.5006/c2013-02141.

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Abstract This paper promotes a proprietary approach meant to increase the operation lifetime of the J55 tubing. The project driver was the premature and repeated failures of the J55 tubing, under different environments and various operating conditions. Detailed failure analyses have been carried out revealing the following damage mechanisms: wear, corrosion or both, assisted at times by erosion. The tubing failures, macro and micro investigated in the laboratory, together with the material tests, revealed that the technological and mechanical properties of steels are directly correlated to the
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Šoštarić, Tatjana, Zorica Lopičić, Dragana Ranđelović, Tamara Rakić, Anja Antanasković, and Ivana Mikavica. "PLANT GROWING SITE CHARACTERISTICS – AN IMPORTANT FACTOR FOR BIOMASS SELECTION." In 17th International Conference on Fundamental and Applied Aspects of Physical Chemistry. Society of Physical Chemists of Serbia, 2024. https://doi.org/10.46793/phys.chem24ii.459s.

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The characteristics of leaf biomass of invasive Acer negundo L. tree species from three different growing sites were evaluated, and its potential influence for its further usage was considered. Two natural and one mining site were chosen for the sampling of soil and leaves: Mountain Avala (A), Great War Island (B) and the banks of former coal separation pond in Piskanja (C). The results confirmed that soil sample C from the most anthropogenic influenced area, stands out from the other two samples and coresponding biomass differs in terms of physical and chemical characteristics. The amount and
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Zhao, Liang, and Kunjie Luo. "Root Cause Analysis of a Leak Off Tube of the Primary Loop in a CANDU 6 Unit." In 2017 25th International Conference on Nuclear Engineering. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/icone25-66710.

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Chemical composition analysis, microstructure analysis, macro and micro fracture morphology analysis were conducted on a cracked leak off tube in primary heat transport and heavy water collection system of a CANDU6 unit. The results show that the material conforms to the original design requirements. The leaked fluid vaporized at the penetration and stress corrosion crack initiated because of cl-concentration. The leaked fluid drains periodically and lead the wall surface temperature periodically changes. The SCC crack transformed to corrosion fatigue crack and the tube finally fractured. In o
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d'Oliveira, A., A. de Christo, and D. S. Vaz. "Evaluation of Intermetallic Coatings Processed by PTA." In ITSC2008, edited by B. R. Marple, M. M. Hyland, Y. C. Lau, C. J. Li, R. S. Lima, and G. Montavon. Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH, 2008. http://dx.doi.org/10.31399/asm.cp.itsc2008p1078.

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Abstract Plasma Transferred Arc hardfacing (PTA) is an excellent tool for surface tailoring as it allows for the manipulation of coatings chemical composition. In particular in-situ alloy development can be achieved during the deposition of different powder mixtures. In this work powder mixtures of Ni-Al, Nb-Al and Fe-Al were deposited by PTA. Coatings were characterized for their mechanical features at room temperature evaluated by Vickers microhardness under 300gf load, nano- (0.04gf) and macro- (10kgf) scratch tests and pin-on-abrasive disc tests under 1kgf. Results showed very high dilutio
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MacLennan, Douglas, Arlen Heginbotham, Monica Ganio, et al. "Analysis of the physical characteristics and chemical composition of gold leaf in works of art by scanning macro x-ray fluorescence (MA-XRF) spectroscopy (Conference Presentation)." In Optics for Arts, Architecture, and Archaeology VII, edited by Piotr Targowski, Roger Groves, and Haida Liang. SPIE, 2019. http://dx.doi.org/10.1117/12.2526230.

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Bazhay-Zhezherun, Svitlana, Ludmyla Bereza-Kindzerska, Аlla Bashta, and Tetiana Fedorenko. "Enrichment of whole grain bread with herbal additives." In VI International Conference on European Dimensions of Sustainablе Development. National University of Food Technologies, 2024. https://doi.org/10.24263/edsd-2024-6-35.

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A comparative assessment of the chemical composition of whole grain and hemp flour was carried out. We investigated the organoleptic parameters of sweet potato fruits and puree from it, as well as the chemical composition of the specified raw materials. We researched the influence of hemp flour and sweet potato puree on physico-chemical quality indicators of dough and whole grain bread. The dough was kneaded using a steamless method from wheat whole-grain flour with the addition of hemp flour in an amount of 4-10% and sweet potato puree – 2-8 %. Enrichment of whole wheat bread with hemp flour
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Zirka, A. Yu, and A. D. Plastun. "STUDYING THE PROSPECTS OF APPLICATION OF MICROGREEN FOR SPECIALIZED NUTRITION." In I International Congress “The Latest Achievements of Medicine, Healthcare, and Health-Saving Technologies”. Kemerovo State University, 2023. http://dx.doi.org/10.21603/-i-ic-43.

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The range and popularity of vegetable raw materials is growing, in connection with this, there is a need to study the prospects for the use of new or less popular food products of the "superfood" category for specialized nutrition as a source of essential macro and micro nutrients. The study analyzed the benefits and possible difficulties of using microgreens for specialized nutrition. Microgreens can be a good source of essential nutrients, since they have a wide range of them in their chemical composition, which can be used to form a complete diet. However, to date, the use of microgreens is
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Zabihian, Farshid, Alan S. Fung, and Murat Koksal. "Performance of Biogas Fueled Hybrid Solid Oxide Fuel Cell (SOFC) and Gas Turbine Cycle." In ASME 2010 4th International Conference on Energy Sustainability. ASMEDC, 2010. http://dx.doi.org/10.1115/es2010-90149.

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The macro level model of a solid oxide fuel cell (SOFC) system was developed considering fundamental equations of thermodynamics, chemical reactions, and electrochemistry. The SOFC model was implemented in a hybrid SOFC-gas turbine (GT) cycle model using Aspen Plus® to simulate two configurations, system with and without anode recirculation. In order to monitor the performance of the system, parameters such as SOFC and system thermal efficiency; SOFC, GT, and cycle net and specific work; as well as air to fuel ratio, and air and fuel mass flow rate were investigated. The results of simulation
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Reports on the topic "Chemical macro composition"

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Beckett-Brown, C. E., A. M. McDonald, and M. B. McClenaghan. Discovering a porphyry deposit using tourmaline: a case study from Yukon. Natural Resources Canada/CMSS/Information Management, 2023. http://dx.doi.org/10.4095/331349.

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As the exploration for porphyry Cu-Au-Mo deposits has become increasingly challenging, the development of more effective techniques directed at detecting buried deposits has become critical. One methodology is to focus on key minerals, one of which is tourmaline, a robust, ubiquitous mineral in most mineralized porphyry systems. Overall, a combination of physical and chemical characteristics including 1) macro-color, 2) morphology, 3) inclusion populations, and 4) trace-element compositions are useful in discriminating between porphyry- versus non-porphyry-derived (or related) tourmaline in su
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