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Journal articles on the topic 'Crystalline Constituents'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Y., L. N. MURTHY, and A. JAIRAJ M. "Crystalline Constituents of Flueggea microcarpa Blume." Journal of Indian Chemical Society Vol. 65, Oct 1988 (1988): 738–39. https://doi.org/10.5281/zenodo.6106592.

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2

Alhadid, Ahmad, Sahar Nasrallah, Liudmila Mokrushina, and Mirjana Minceva. "Design of Deep Eutectic Systems: Plastic Crystalline Materials as Constituents." Molecules 27, no. 19 (2022): 6210. http://dx.doi.org/10.3390/molecules27196210.

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Deep eutectic solvents (DESs) are a class of green and tunable solvents that can be formed by mixing constituents having very low melting entropies and enthalpies. As types of materials that meet these requirements, plastic crystalline materials (PCs) with highly symmetrical and disordered crystal structures can be envisaged as promising DES constituents. In this work, three PCs, namely, neopentyl alcohol, pivalic acid, and neopentyl glycol, were studied as DES constituents. The solid–plastic transitions and melting properties of the pure PCs were studied using differential scanning calorimetr

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3

Tschauner, Oliver. "General Trends in the Compression of Glasses and Liquids." Crystals 14, no. 9 (2024): 815. http://dx.doi.org/10.3390/cryst14090815.

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The present work relates the isothermal volumes of silicate glasses and melts to the combined ionic volumes of their chemical constituents. The relation is an extension of a relation that has already been established for crystalline oxides, silicates, alumosilicates, and other materials that have O2− as a constituent anion. The relation provides constraints on bond coordination, indicates pressure-induced changes in coordination in melts and glasses and interatomic distances, and quantifies the extent of transitory regions in pressure-induced coordination changes.

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4

Krztoń, Hanna J. "Quantitative Phase Analysis of Fly Ashes from Six Polish Power Stations." Solid State Phenomena 130 (December 2007): 277–80. http://dx.doi.org/10.4028/www.scientific.net/ssp.130.277.

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Application of the Rietveld method to quantitative phase analysis of fly ashes from Polish power stations is presented. The calculations of the fractions of crystalline components as well as non crystalline constituents have been done using SIROQUANT TM software. The power of the Rietveld refinement is shown when very small contents of minerals are detected and quantified.

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5

Huang, Yu-Chieh, Maxim Benjamin Gindele, Jennifer Knaus, Ashit Rao, and Denis Gebauer. "On mechanisms of mesocrystal formation: magnesium ions and water environments regulate the crystallization of amorphous minerals." CrystEngComm 20, no. 31 (2018): 4395–405. http://dx.doi.org/10.1039/c8ce00241j.

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Elucidating the emergence of crystalline superstructures from amorphous precursors, hydration environments and ionic constituents can guide transformation and structuration reactions towards distinct micro- and nano-structures.

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6

McCarthy, G. J., and J. K. Solem. "X-ray Diffraction Analysis of Fly Ash. II. Results." Advances in X-ray Analysis 34 (1990): 387–94. http://dx.doi.org/10.1154/s0376030800014701.

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AbstractA protocol for semi-quantitative XRD analysis of fly ash has been applied to 178 ashes in studies of the typical mineralogy of high-calcium and iow-calcium fly ash, the consistency of fly ash mineralogy from a typical power station, the partitioning of chemical constituents into crystalline phases, and the crystalline phases relevant to the use of fly ash in concrete.

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7

Luu Thi, Lan Anh, Duc Hieu Nguyen, Mateus Manuel Neto, Ngoc Trung Nguyen, and Thach Son Vo. "Characterization of Nanocrystalline Titania Thin Film Deposited by Spray Pyrolysis Technique." Advanced Materials Research 875-877 (February 2014): 49–53. http://dx.doi.org/10.4028/www.scientific.net/amr.875-877.49.

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Nanocrystalline titania (TiO2) thin ﬁlms prepared by spray pyrolysis deposition on to the heated glass in a temperature range of TS = 350 ÷ 450oC. Analysis of optical transmission spectral of films reveals an optical band gap of about 3.2÷3.4 eV and the transmittance above 80% for TiO2 films with thickness of 0.8÷1.6 µm. X-ray diffraction (XRD) analysis demonstrates that the ﬁlms are found of anatase phase in crystal structure. The AFM photographs show the nano-size of the constituents. The crystallize size and crystalline of the samples is discussed with respect to the film thickness and depo

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8

Ray, A. K. "Effects of chemical constituents on crystalline properties of ethylene ionomers." Journal of Thermal Analysis 46, no. 6 (1996): 1527–39. http://dx.doi.org/10.1007/bf01980759.

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9

Bankole, S. I., A. Akinmosin, T. Omeru, and H. E. Ibrahim. "Heavy Mineral Distribution in the Lokoja and Patti Formations, Southern Bida Basin, Nigeria: Implications for Provenance, Maturity and Transport History." Materials and Geoenvironment 66, no. 3 (2020): 185–97. http://dx.doi.org/10.2478/rmzmag-2019-0011.

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AbstractHeavy mineral component of 13 samples from the Lokoja and Patti Formations, Bida Basin have been studied for their textural characteristics, compositional abundance, maturity and provenance determinations. The suite of heavy minerals encountered is classified as opaque and non-opaque constituents. The non-opaque components include zircon, tourmaline, rutile, garnet, staurolite, epidote, kyanite, titanite, lawsonite, cassiterite, sillimanite, hornblende, hypersthene and andalusite. The assemblage is generally dominated by zircon and tourmaline in the two formations. The constituent heav

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10

Parra-Delgado, Hortensia, Rubén A. Toscano, Aída N. García-Argaez, and Mariano Martínez-Vázquez. "Chemical Constituents of Coutaportla ghiesbregthiana: Co-Crystallization of Two ent-Nor-Kaurene Diterpenes." Zeitschrift für Naturforschung B 60, no. 5 (2005): 548–54. http://dx.doi.org/10.1515/znb-2005-0512.

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The known nor-diterpene (16R)-ent-17-hydroxy-19-nor-kaur-4-en-3-one and the new norditerpene (16R)-ent-19-nor-kaur-4-en-3-oxo-17-oic acid were obtained as a crystalline mixture from roots of C. ghiesbregthiana. Their structures were deduced by spectroscopic means and confirmed by a X-ray diffraction study of the crystalline mixture. Additionally, ursolic and betulinic acids, skimmin, and sucrose were isolated. This is the first chemical study of a member of the Coutaportla genus.

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11

Yang, Ting, Hongshun Chen, Zian Jia, et al. "A damage-tolerant, dual-scale, single-crystalline microlattice in the knobby starfish, Protoreaster nodosus." Science 375, no. 6581 (2022): 647–52. http://dx.doi.org/10.1126/science.abj9472.

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Cellular solids (e.g., foams and honeycombs) are widely found in natural and engineering systems because of their high mechanical efficiency and tailorable properties. While these materials are often based on polycrystalline or amorphous constituents, here we report an unusual dual-scale, single-crystalline microlattice found in the biomineralized skeleton of the knobby starfish, Protoreaster nodosus . This structure has a diamond-triply periodic minimal surface geometry (lattice constant, approximately 30 micrometers), the [111] direction of which is aligned with the c -axis of the constituen

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12

Chen, Hsin-Lung, and Shi-Fang Wang. "Crystallization induced microstructure of polymer blends consisting of two crystalline constituents." Polymer 41, no. 14 (2000): 5157–64. http://dx.doi.org/10.1016/s0032-3861(99)00745-4.

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13

Hirschmann, Gottfried, and Martin Okrusch. "The Spessart and the Ruhla crystalline complexes as constituents of the central German crystalline rise - a correlation." Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen 177, no. 1 (1988): 1–39. http://dx.doi.org/10.1127/njgpa/177/1988/1.

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14

Idiart, Martín I., and Pedro Ponte Castañeda. "Variational linear comparison bounds for nonlinear composites with anisotropic phases. II. Crystalline materials." Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences 463, no. 2080 (2007): 925–43. http://dx.doi.org/10.1098/rspa.2006.1804.

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In part I of this work, bounds were derived for the effective potentials of nonlinear composites with anisotropic constituents, making use of an appropriate generalization of the linear comparison variational method. In this second part, the special case of nonlinear composites with crystalline constituents is considered. First, it is shown that, for this special but very important class of materials, the ‘variational’ bounds of part I are at least as good as an earlier version of the bounds due to deBotton & Ponte Castañeda. Then, the relative merits of these two types of bounds are studi

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15

K.W, Shalbugau, Dass P.M, Iji M, Nkafamiya I. I, and Maitera O. N. "Development and characterization of catalyst materials from magnetic sand, Crotalaria pallida and kaolin." International Journal of Advanced Chemistry 9, no. 2 (2021): 188. http://dx.doi.org/10.14419/ijac.v9i2.31812.

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In this study, magnetic sand and Crotalaria pallida gotten from Adamawa and Bauchi states of Nigeria, respectively, were mixed after treatment, and impregnated with kaolin using a wet impregnation method and the resulting material was characterized using scanning electron microcopy (SEM), X-ray fluorescence (XRF) and X-ray diffraction (XRD). The result of XRF analysis revealed the existence of a number of dopant-like constituents in the sample, which substitute parts of important atoms in the spinel structure, however, not forming individual phases. The SEM micrographs displayed pore structure

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16

Aman, Yadav Rohit Tiwari Jayendra Rane*. "Study Of Camphor with Chemical Constituents and It's Pharmacological Action." International Journal of Pharmaceutical Sciences 3, no. 1 (2025): 2592–96. https://doi.org/10.5281/zenodo.14778771.

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Camphor (C10H16O) is a white crystalline solid with enantiomeric forms R and S camphor. It is a terpene derived from turpentine. Alpha pinene is produced using a catalytic mechanism. Camphor is naturally obtained by steam distillation of the woods of the Cinnamomum camphora tree, often known as the camphor tree, camphor laure, or camphor wood. Camphor exhibits numerous pharmacological effects. It acts as antipyretic, antibacterial, antitumor, antioxidant, anti-inflammatory, antiviral. It can also be utilized as a skin penetration booster. Camphor has a relaxing and cooling sensation that helps

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17

Gonçalves Rapazote, Joana, Cristóvão Laginhas, and Amândio Teixeira-Pinto. "Development of Building Materials through Alkaline Activation of Construction and Demolition Waste (CDW) - Resistance to Acid Attack." Advances in Science and Technology 69 (October 2010): 156–63. http://dx.doi.org/10.4028/www.scientific.net/ast.69.156.

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Construction and demolition waste (CDW) is a by-product of construction and demolition activity. It consists mostly of inert and non-biodegradable material such as concrete, plaster, metal, wood, plastics etc. CDW is priority waste in the E.U. due to the increased quantities and volumes that are produced. While retrievable items such as brick, wood and metal wires are recycled, concrete, masonry tile and ceramic waste, accounting for more than 60% of CDW, are not being currently recycled. The main objective of this study is to develop a process for obtaining new building materials from CDW usi

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18

Parajuli, Sandhya, Pujan Nepal, Ganesh Prasad Awasthi, et al. "Synthesis, characterization and antimicrobial study of silver nanoparticles using methanolic fraction of Artemisia vulgaris leaf." BIBECHANA 21, no. 1 (2024): 63–73. http://dx.doi.org/10.3126/bibechana.v21i1.60018.

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Rational selection of active biomolecules in the synthesis of nanoparticles for reducing the precursor and functionalizing the nanoparticles (NPs) can offer remarkable comeback of biocompatibility and biological applicability. This work aimed at the synthesis of a cost-effective, ecofriendly, and a facile approach of silver nanoparticles (AgNPs) using methanolic leaf extract of Artemisia vulgaris. The phytochemical constituents present in the methanolic extract were characterized by qualitative chemical tests and spectroscopic measurements and employed for the reduction of silver nitrate into

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19

Su, Qing, Tianyao Wang, Jonathan Gigax, Lin Shao, and Michael Nastasi. "Resistance to Helium Bubble Formation in Amorphous SiOC/Crystalline Fe Nanocomposite." Materials 12, no. 1 (2018): 93. http://dx.doi.org/10.3390/ma12010093.

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The management of radiation defects and insoluble He atoms represent key challenges for structural materials in existing fission reactors and advanced reactor systems. To examine how crystalline/amorphous interface, together with the amorphous constituents affects radiation tolerance and He management, we studied helium bubble formation in helium ion implanted amorphous silicon oxycarbide (SiOC) and crystalline Fe composites by transmission electron microscopy (TEM). The SiOC/Fe composites were grown via magnetron sputtering with controlled length scale on a surface oxidized Si (100) substrate

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20

GUERTIN, R. P., and S. McCALL. "PRESSURE DEPENDENT MAGNETIZATION AND MAGNETIC ORDERING IN RARE EARTH RUTHENATES, Sm2RuO5, Gd2RuO5, Tb2RuO5, AND Nd3RuO7." International Journal of Modern Physics B 16, no. 20n22 (2002): 3317–20. http://dx.doi.org/10.1142/s0217979202014292.

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The antiferromagnetic ordering temperatures of Sm2RuO5, Tb2RuO5 and the ferromagnetic ordering temperature of Nd3RuO7 are reduced by the application of high hydrostatic pressure, whereas that of antiferromagnetic Gd2RuO5 remains unchanged. The results are discussed in terms of the enhancement of the crystalline electric field interaction on the Ln cation constituents. A versatile method of measuring magnetization in high fields and high pressure is presented.

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21

McCracken, Joselle M., Brian R. Donovan, Kelsey M. Lynch, and Timothy J. White. "Molecular Engineering of Mesogenic Constituents Within Liquid Crystalline Elastomers to Sharpen Thermotropic Actuation." Advanced Functional Materials 31, no. 16 (2021): 2100564. http://dx.doi.org/10.1002/adfm.202100564.

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22

Milavec, Jerneja, Andraz Resetic, Alexej Bubnov, Bostjan Zalar, and Valentina Domenici. "Dynamic investigations of liquid crystalline elastomers and their constituents by 2H NMR spectroscopy." Liquid Crystals 45, no. 13-15 (2018): 2158–73. http://dx.doi.org/10.1080/02678292.2018.1494858.

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23

Yang, Hong, He Wang, Dingyue Cao, Dangmin Sun, and Xiaobao Ju. "Analysis of Power Loss for Crystalline Silicon Solar Module during the Course of Encapsulation." International Journal of Photoenergy 2015 (2015): 1–5. http://dx.doi.org/10.1155/2015/251615.

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During the course of solar module encapsulation, the output power of crystalline silicon solar module is less than the sum of the maximum output power of the constituents because of power loss. So it is very important to investigate the power loss caused by encapsulation materials and module production process. In this paper, the power loss of crystalline silicon solar module is investigated by experiments systematically for the first time. It is found that the power loss is mainly caused by the resistance of ribbon and mismatch of solar cells; the total power loss is as high as 3.93% for sola

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24

Nawz, Tahreem Haq, Muhammad Talha Masood, Amna Safdar, et al. "In Situ Synthesis of Crystalline MoS2@ZIF-67 Nanocomposite for the Efficient Removal of Methyl Orange Dye from Aqueous Media." Micromachines 14, no. 8 (2023): 1534. http://dx.doi.org/10.3390/mi14081534.

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The zeolitic imidazolate framework-67 (ZIF-67) adsorbent and its composites are known to effectively remove organic dyes from aqueous environments. Here, we report a unique crystalline MoS2@ZIF-67 nanocomposite adsorbent for the efficient removal of methyl orange (MO) dye from an aqueous medium. In situ synthetic techniques were used to fabricate a well-crystalline MoS2@ZIF-67 nanocomposite, which was then discovered to be a superior adsorbent to its constituents. The successful synthesis of the nanocomposite was confirmed using XRD, EDX, FTIR, and SEM. The MoS2@ZIF-67 nanocomposite exhibited

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25

Gilkes, RJ, and JC Hughes. "Sodium-fluoride pH of South-Western Australian soils as an indicator of P-sorption." Soil Research 32, no. 4 (1994): 755. http://dx.doi.org/10.1071/sr9940755.

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Phosphate sorption by the surface horizon of 228 acid to neutral Western Australian (W.A.) soils is more closely related (r(2) = 0.76) to the content of oxalate-extractable aluminium than to any other soil constituent. This fraction corresponds to poorly ordered inorganic and organic Al compounds that release considerable amounts of OH- to NaF solution. Thus the abundance of these compounds in soil may be estimated by measurement of the pH of a NaF extract (pH((NaF)) This association enables the rapid and moderately accurate prediction in the field of the P-sorption capacity of soils (r(2) = 0

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26

Cimpeanu, Carmen, Daniela Predoi, Carmen Steluta Ciobanu, et al. "Development of Novel Biocomposites with Antimicrobial-Activity-Based Magnesium-Doped Hydroxyapatite with Amoxicillin." Antibiotics 13, no. 10 (2024): 963. http://dx.doi.org/10.3390/antibiotics13100963.

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Background/Objectives: A biocomposite based on magnesium-doped hydroxyapatite and enriched with amoxicillin (MgHApOx) was synthesized using the coprecipitation method and is presented here for the first time. Methods: The stability of MgHAp and MgHApOx suspensions was evaluated by ultrasound measurements. The structure of the synthesized MgHAp and MgHApOx was examined with X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy and X-ray photoelectron spectroscopy (XPS). The crystalline structure was determined by X-ray diffraction. The FTIR data were collected in the range of

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27

Baral, Gaurab, and Anant Babu Marahatta. "FTIR and XRD Characterization of the Cements Available in Commercial Market of Nepal." Asian Journal of Applied Chemistry Research 14, no. 4 (2023): 34–53. http://dx.doi.org/10.9734/ajacr/2023/v14i4275.

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In the engineering material characterizations and analytical domains where the specific physicochemical properties of the materials are probed through various sophisticated instrumental tools and techniques, the XRD and FTIR spectroscopy stand as the standalone applications as the former discloses the crystallographic structure, crystallite/grain sizes, and the chemical compositions of the specific materials nondestructively while the latter reveals details about the IR active vibrations modes of each covalent bond of their chemical constituents. In the present studies, we employ both of these

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28

Kim, Yoonjung, Myeongsang Lee, Inchul Baek, Taeyoung Yoon, and Sungsoo Na. "Mechanically inferior constituents in spider silk result in mechanically superior fibres by adaptation to harsh hydration conditions: a molecular dynamics study." Journal of The Royal Society Interface 15, no. 144 (2018): 20180305. http://dx.doi.org/10.1098/rsif.2018.0305.

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Spider silk exhibits mechanical properties such as high strength and toughness that are superior to those of any man-made fibre (Bourzac 2015 Nature 519 , S4–S6 ( doi:10.1038/519S4a )). This high strength and toughness originates from a combination of the crystalline (exhibiting robust strength) and amorphous (exhibiting superb extensibility) regions present in the silk (Asakura et al . 2015 Macromolecules 48 , 2345–2357 ( doi:10.1021/acs.macromol.5b00160 )). The crystalline regions comprise a mixture of poly-alanine and poly-glycine-alanine. Poly-alanine is expected to be stronger than poly-g

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29

Agheem, Muhammad Hassan, Humaira Dars, Sarfraz Hussain Solangi, et al. "Effects of Diagenesis on the Reservoir Quality in the Upper Sands of Lower Goru Formation, Badin Block, Lower Indus Basin, Pakistan." International Journal of Economic and Environmental Geology 11, no. 3 (2020): 22–30. http://dx.doi.org/10.46660/ijeeg.vol11.iss3.2020.472.

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The core samples of B member of upper sand reservoir rocks of the lower Goru Formation from three wellsof the Badin block were studied using thin section, XRD, and SEM techniques to investigate the diagenetic trends andtheir effect on reservoir quality. Microscopic study indicates that the B sand unit is mature with quartz as thepredominant mineral constituent with variable amount of feldspar and lithic minerals. The QFL plot indicates that mostof the samples are plotted in the field of quartz arenite, sub-litharenite and sub-arkose respectively. A few samplesbelong to the category of litharen

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30

Morris, Howard A., Carl Holt, Brian E. Brooker, Jean M. Banks, and William Manson. "Inorganic constituents of cheese: analysis of juice from a one-month-old Cheddar cheese and the use of light and electron microscopy to characterize the crystalline phases." Journal of Dairy Research 55, no. 2 (1988): 255–68. http://dx.doi.org/10.1017/s002202990002608x.

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SummaryA method of extracting cheese juice is described. Juice from a single one-month-old Cheddar cheese was used to investigate the relationship between the composition of the cheese juice and the occurrence of crystalline aggregates in the cheese. Two classes of crystalline aggregates were identified by light microscopy and also by electron microscopy in combination with X-ray microanalysis: the larger class contained both Ca and P whereas the smaller class contained Ca but not P. Concentrations of ions in the cheese and cheese juice were determined and corrected for the excluded volume of

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31

Poulhazan, Alexandre, Alexandre Arnold, Dror Warschawski, and Isabelle Marcotte. "Unambiguous Ex Situ and in Cell 2D 13C Solid-State NMR Characterization of Starch and Its Constituents." International Journal of Molecular Sciences 19, no. 12 (2018): 3817. http://dx.doi.org/10.3390/ijms19123817.

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Starch is the most abundant energy storage molecule in plants and is an essential part of the human diet. This glucose polymer is composed of amorphous and crystalline domains in different forms (A and B types) with specific physicochemical properties that determine its bioavailability for an organism, as well as its value in the food industry. Using two-dimensional (2D) high resolution solid-state nuclear magnetic resonance (SS-NMR) on 13C-labelled starches that were obtained from Chlamydomonas reinhardtii microalgae, we established a complete and unambiguous assignment for starch and its con

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32

Clymans, W., L. Barão, N. Van der Putten, et al. "The contribution of tephra constituents during biogenic silica determination: implications for soil and paleoecological studies." Biogeosciences Discussions 12, no. 4 (2015): 3505–45. http://dx.doi.org/10.5194/bgd-12-3505-2015.

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Abstract. Biogenic silica (BSi) is used as a proxy by soil scientists to identify biological effects on the Si cycle and by paleoecologists to study environmental changes. Alkaline extractions are typically used to measure BSi in both terrestrial and aquatic environments. The dissolution properties of volcanic glass in tephra deposits and their nano-crystalline weathering products are hypothesized to overlap those of BSi, however, data to support this behavior are lacking. The understanding that the Si-bearing fractions that dissolve in alkaline media (SiAlk) do not necessarily correspond to B

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Johnson, Lewis E., Peter V. Sushko, Yudai Tomota, and Hideo Hosono. "Electron anions and the glass transition temperature." Proceedings of the National Academy of Sciences 113, no. 36 (2016): 10007–12. http://dx.doi.org/10.1073/pnas.1606891113.

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Properties of glasses are typically controlled by judicious selection of the glass-forming and glass-modifying constituents. Through an experimental and computational study of the crystalline, molten, and amorphous [Ca12Al14O32]2+ ⋅ (e–)2, we demonstrate that electron anions in this system behave as glass modifiers that strongly affect solidification dynamics, the glass transition temperature, and spectroscopic properties of the resultant amorphous material. The concentration of such electron anions is a consequential control parameter: It invokes materials evolution pathways and properties no

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34

Kang, Jung-In, Han-Cheol Choe, and Mee-Kyoung Son. "Nano/Micro-Sized Morphologies of Hydroxyapatite Coatings Containing Mn and Si on an Oxidized Ti–6Al–4V Alloy Surface for Dental Implants." Journal of Nanoscience and Nanotechnology 21, no. 7 (2021): 3701–6. http://dx.doi.org/10.1166/jnn.2021.19169.

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To improve the surface characteristics of Ti–6Al–4V dental implants and the binding between the bone and implant surface, biocompatible oxide films were formed by plasma electrolytic oxidation (PEO). The PEO treatment was performed using electrolyte solutions containing Ca (calcium acetate monohydrate), P(calcium glycerophosphate), Mn (manganese(II) acetate tetrahydrate), and Si (sodium metasilicate nonahydrate), which are the major constituents of bone, for 3 min at 280 V. The morphology and crystalline phase of the PEO-treated surfaces were characterized using field-emission scanning electro

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35

Simon, Cory M., Efrem Braun, Carlo Carraro, and Berend Smit. "Statistical mechanical model of gas adsorption in porous crystals with dynamic moieties." Proceedings of the National Academy of Sciences 114, no. 3 (2017): E287—E296. http://dx.doi.org/10.1073/pnas.1613874114.

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Some nanoporous, crystalline materials possess dynamic constituents, for example, rotatable moieties. These moieties can undergo a conformation change in response to the adsorption of guest molecules, which qualitatively impacts adsorption behavior. We pose and solve a statistical mechanical model of gas adsorption in a porous crystal whose cages share a common ligand that can adopt two distinct rotational conformations. Guest molecules incentivize the ligands to adopt a different rotational configuration than maintained in the empty host. Our model captures inflections, steps, and hysteresis

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36

Messaoudene, Ibrahim, and Raoul Jauberthie. "Marble Filler: Does It Retard the Dissolution of Cement Constituents?" ISRN Materials Science 2011 (August 18, 2011): 1–5. http://dx.doi.org/10.5402/2011/695123.

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We showed In previous studies, that partial substitution of Portland cement with fillers from industrial by-products, slag and marble, have enabled the development of new hydraulic cements (ternary or quaternary) with a good mechanical performance, in addition to their economic and ecological benefits. This paper examines the influence of partial Portland cement replacement (CEM-I) with marble filler and other mineral additions on physicochemical properties of cement paste. A rapid preliminary test, the pH measurement of a binder suspension, reveals that marble powder lowers the pH of the ceme

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Jung, Won Tae, Sae Hyun Rho, and Woo Chan Park. "Racemization of Lens Crystalline Constituents in UV-lnduced Cataract Evaluated by Chiral GC/MS Spectroscopy." Ophthalmic Research 28, no. 2 (1996): 26–31. http://dx.doi.org/10.1159/000267953.

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38

Romero, R., M. Robert, F. Elsass, and C. Garcia. "Abundance of halloysite neoformation in soils developed from crystalline rocks. Contribution of transmission electron microscopy." Clay Minerals 27, no. 1 (1992): 35–46. http://dx.doi.org/10.1180/claymin.1992.027.1.04.

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AbstractThe soils developed from crystalline and metamorphic rocks in Galicia (NW Spain), are characterized by high concentrations of 1 : 1 phyllosilicates and gels. Thermal analyses, X-ray diffraction after formamide treatment, and IR spectroscopy in the OH vibration range have been performed on the clay fractions, but do not discriminate clearly between the different associated mineralogical phases. HRTEM studies linked with microdiffraction and microanalyses have led to the identification of several types of gel which transform into goethite, gibbsite, clay precursors, and/ or halloysite ac

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Jurzysta, Marian, Stanisław Burda, Wiesław Oleszek, Piotr Górski, and Michał Płoszyński. "Studies on Medicago lupulina saponins. 5. Isolation and chemical characterization of blossom saponins." Acta Societatis Botanicorum Poloniae 56, no. 1 (2014): 101–6. http://dx.doi.org/10.5586/asbp.1987.011.

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The separation of saponins derived from <em>Medicago lupulina</em> L. flowers yielded two saponin fractions. The first one, made up of crystalline saponins, readily precipitable from water solution, was a mixture of three glycosides of soyasapogenol B. Acid hydrolysis of these saponins yielded soyasapogenol B and its three artifacts: soyasapogenols C. D and F. Xylose, rhamnose, galactose, glucose and glucuronic acid were found as sugar constituents. The second fraction obtained by cholesterol precipitation consisted of seven haemolytically active medicagenic acid glycosides. Their

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Marques, Otavio J. B. J., Michael D. Walter, Elena V. Timofeeva, and Carlo U. Segre. "Effect of Initial Structure on Performance of High-Entropy Oxide Anodes for Li-Ion Batteries." Batteries 9, no. 2 (2023): 115. http://dx.doi.org/10.3390/batteries9020115.

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Two different high-entropy oxide materials were synthesized and studied as Li-ion battery anodes. The two materials have the same active metal constituents but different inactive elements which result in different initial crystalline structures: rock salt for (MgFeCoNiZn)O and spinel for (TiFeCoNiZn)3O4. Local structural studies of the metal elements in these two materials over extended electrochemical cycling reveal that the redox processes responsible for the electrode capacity are independent of the initial crystallographic structure and that the capacity is solely dependent on the initial

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Azza, A. Matloub, M. AbouSamra Mona, H. Salama Alaa, A. Hamed Manal, and A. Ali Sanaa. "Preclinical Study of Nanostructured Cubic Liquid Crystalline Formulating of Ulva Fascista Bioactive Polysaccharides against Hepatocirrhosis." Open Journal of Pharmaceutical Science and Research 3, no. 1 (2021): 21–34. https://doi.org/10.36811/ojpsr.2021.110012.

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From our previous study, the aqueous soluble polysaccharides isolated from cold aqueous extract of Ulva fasciata was prepared and represented as the most of its bioactive constituents. The polysaccharides were formulated as cubosomal nanoparticles for use as anti-hepatocirrhosis drugs. The formulations were characterized by their encapsulation efficiency, particle size, zeta potential and in vitro release. The selected formulation was subjected to a preclinical study. Serum biomarkers enzymes (aspartate and alanine aminotransferases and alkaline phosphatase) were proved the efficacy of the pol

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N., Gayathri Bhawana Chanana And Arpita Purohit. "Exploring Vetiver Grass as Sustainable Fiber for Textile Industry." Journal Of The Textile Association (JTA) 85, no. 4 (2025): 1–11. https://doi.org/10.5281/zenodo.14604130.

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Purpose: This study aims to explore the potential of Vetiver, a native grass, as a sustainable fiber for the textile industry in India, considering the growing environmental concerns and the need for sustainable practices within the sector. Design/Methodology/Approach: A comprehensive analysis was conducted integrating Field Emission Scanning Electron Microscopy (FESEM), X-ray Diffraction (XRD), and chemical composition testing to investigate the structural, crystalline, and compositional characteristics of Vetiver fiber. FESEM imaging was employed to examine the fibrous arrangement and cellul

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Ismail, S., Norazharuddin Shah Abdullah, H. Hussin, and S. F. Saiyid Hashim. "Bamboo Sawdust as a Reduction Agent in Leaching Applications: Characterization Studies." Advanced Materials Research 620 (December 2012): 405–11. http://dx.doi.org/10.4028/www.scientific.net/amr.620.405.

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One of the promising and environmentally friendly hydrometallurgical processes for the recovery of manganese is acid leaching in the presence of carbohydrate as a reducing agent. The aim of this study is to characterize bamboo sawdust (BSD), in particular, the carbohydrate within, for possible usage as a reduction agent in acid leaching applications. Characterization were done using Malvern analyzer (particle size distribution), SEM (morphology), XRD (crystalline index) and FTIR (molecular framework). Detailed BSD constituents were also analyzed, to determine the cellulose, hemicellulose and l

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Kumar R., Rohith, Sangeetha Ashok Kumar, and K. Periyasami Bhuvana. "Preparation and Evaluation of Bioactivity of Porous Bioglass Tablets for Bone Tissue Regeneration." SciMedicine Journal 1, no. 3 (2019): 112–23. http://dx.doi.org/10.28991/scimedj-2019-0103-1.

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The present study endeavors in the preparation and characterization of semi crystalline 45S5 bioglass (BG) (SiO2-CaO-P2O5) through sol gel process. Dry press mold technique was used in the preparation porous BG tablets to examine the bioactivity through invitro studies. The synthesized BG powder was subjected to structural, morphological and mechanical characterization and the bioactivity was examined in vitro by immersing the BG tablet in the Simulated Body Fluid (SBF) solution. XRD pattern and the SEM micrographs revealed the semi crystalline nature of BG with spherical morphology. The eleme

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Sagadevan, Suresh, Zaira Zaman Chowdhury, Mohd Rafie Bin Johan, et al. "Cu-Doped SnO2 Nanoparticles: Synthesis and Properties." Journal of Nanoscience and Nanotechnology 19, no. 11 (2019): 7139–48. http://dx.doi.org/10.1166/jnn.2019.16666.

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In this work, a simple, co-precipitation technique was used to prepare un-doped, pure tin oxide (SnO2). As synthesized SnO2 nanoparticles were doped with Cu2+ ions. Detailed characterization was carried out to observe the crystalline phase, morphological features and chemical constituents with opto-electrical and magnetic properties of the synthesized nanoparticles (NPs). X-ray diffraction analysis showed the existence of crystalline, tetragonal structure of SnO2. Both the sample synthesized here showed different crystalline morphology. The band gap energy (Eg) of the synthesized sample was es

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Wang, Dan, Yu-xuan Feng, Ming Li, Shengdi Guo, and Yuan Jiang. "Seeded Mineralization in Silk Fibroin Hydrogel Matrices Leads to Continuous Rhombohedral CaCO3 Films." Crystals 10, no. 3 (2020): 166. http://dx.doi.org/10.3390/cryst10030166.

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As many biominerals are formed in gel-like media, hydrogel-mediated mineralization is deemed as paradigms of biomineralization and ideal approaches to synthetic minerals with hierarchical architectures and related functions. Nevertheless, the long diffusion distance in hydrogels makes mineralization a diffusion-limited process, leading to isolated crystals instead of uniform hierarchical architectures. In the current study, seeded mineralization in silk fibroin hydrogel matrices is successful in delivering continuous rhombohedral CaCO3 films. Though the coverage of hydrogel matrices makes mine

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Al Bakri, A. M. Mustafa, A. R. Rafiza, D. Hardjito, H. Kamarudin, and I. Khairul Nizar. "Characterization of LUSI Mud Volcano as Geopolymer Raw Material." Advanced Materials Research 548 (July 2012): 82–86. http://dx.doi.org/10.4028/www.scientific.net/amr.548.82.

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The mud of mud volcano samples were collected from an eruption site named ‘LUSI’ (Lumpur “mud” –Sidoarjo), East Java, Indonesia for characterization. Analysis showed that, the major constituents of mud are SiO2 and Al2O3 which are higher than those in fly ash. The particle of mud has a flake-shaped particle and the overall particle size is dominated by particles between 2.5µm – 25.0µm. The results of XRD shows that mud of mud volcano have a characteristic of structurally disordered compounds, and a set of peaks corresponding to minor crystalline phases such as quartz, feldspars, and kaolinite.

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Furukawa, Hiroyasu, Kyle E. Cordova, Michael O’Keeffe, and Omar M. Yaghi. "The Chemistry and Applications of Metal-Organic Frameworks." Science 341, no. 6149 (2013): 1230444. http://dx.doi.org/10.1126/science.1230444.

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Crystalline metal-organic frameworks (MOFs) are formed by reticular synthesis, which creates strong bonds between inorganic and organic units. Careful selection of MOF constituents can yield crystals of ultrahigh porosity and high thermal and chemical stability. These characteristics allow the interior of MOFs to be chemically altered for use in gas separation, gas storage, and catalysis, among other applications. The precision commonly exercised in their chemical modification and the ability to expand their metrics without changing the underlying topology have not been achieved with other sol

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Mammadova, U., P. Zulfugarova, and A. Alasgarova. "Chemical Composition of the Aerial Part of Valeriana alliariifolia Adams." Bulletin of Science and Practice, no. 7 (July 15, 2023): 32–38. http://dx.doi.org/10.33619/2414-2948/92/04.

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The article presents information about the component composition of the acetone extract of the aerial part of Valeriana alliariifolia Adams. Plant raw materials for research were collected in the flowering phase from Batabat Reserve, Shahbuz district of Nakhchivan. Crystalline substances were obtained from the acetone extract of the plant. The individuality of the substances was checked by thin layer chromatography on Silufol UV 254 plates. The component content of the obtained extract was determined by the Gas Chromatography-Mass Spectrometry method (GC-MS). GC-MS analysis of the aerial part

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Kerboub, A., H. Louafi, B. Zaidi, and E. Belbacha. "Prediction of isolated and thermal point defects in B2 aluminium-based crystalline compounds of transition metals AlTM (TM = Ru, Ir, Os and Rh)." Journal of Ovonic Research 21, no. 2 (2025): 263–77. https://doi.org/10.15251/jor.2025.212.263.

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The present paper reports the studies on Aluminum-based crystalline compounds AlTM (TM =Ru, Ir, Os and Rh).The random pseudobinary (A1-xBxC) compounds with compositions x = 0.25 and 0.5 have been investigated using Special Quasirandom Structures (SQS) approach. First principle calculations have been performed to investigate types of defect present in non-stoichiometric B2 AlTMphase. The results indicate that the Al-antisite defect and TM-antisite defect are the main defects present along Al-rich side and TM-rich side respectively. Additionally, at finite temperature along the Al-rich region, A

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