Vibronic coupling in molecules and in solids. by Grochala, W, Hoffmann, R, Edwards, P

“…This is done for a broad range of chemical elements (A). The following similarities between vibronic coupling in molecules and phonon coupling in solids emerge from our calculations: 1) The HOMO/LUMO electronic energy gap in an AAA molecule increases along Q(as), and the highest occupied crystal orbital/lowest unoccupied crystal orbital gap in [A]( infinity ) chain increases along Q(opt). 2) The maximum vibronic instability is invariably obtained for a half-filled, singly occupied molecular orbital in AAA molecules, and for a corresponding half-filled band in [A]( infinity ) chains. 3) The vibronic stability of an AAA molecule increases with a decrease of the AA bond length, as does the vibronic stability of [A]( infinity ) chains (external pressure may lead to a reversal of a Peierls distortion). 4) The high degree of s-p mixing and ionic/covalent forbidden curve crossing dramatically enhance the vibronic instability of both AAA molecules and [A]( infinity ) chains. …”

Direct transesterification process in producing biodiesel from naturally grown algae in aged landfill leachate / Nurul Liyana Rosli by Rosli, Nurul Liyana

“…Characterization of the biodiesel produced was conducted using Bomb Calorimeter, Chemical Elemental Analyzer CHNS, and Gas Chromatograph - Mass Spectrometry (GC-MS). …”
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Chemical and biological reactions of solidification of peat using ordinary portland cement (OPC) and coal ashes by Abdul Rahman, Junita

“…The mixtures of peat-binder-filler were subjected to the unconfined compressive strength (UCS) test, bacterial count test and chemical elemental analysis by using XRF, XRD, FTIR and EDS. …”
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Sequestration of carbon dioxide (CO2) using bio-foamed concrete brick incorporating bacillus tequilensis bacteria by Abdulaziz Al-Shalif, Abdullah Faisal

“…In addition, the use of B in B-FCB improve compressive strength, reduce initial rate of water absorption, water absorption and increase carbonation depth via 35.5 %, 76.4 %, 20.2 % and 30.0 % compared to FCB respectively. The change in chemical elements levels and increasing crystallinity precipitation in the form of CaCO3 were analysed by SEM, EDX and XRD. …”
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Morphological, Structural, and Optical Features of Thermally Annealed Slag Powders Generated from the Iron and Steel Industry: A Source of Disordered Iron Oxide Composites by Ahmad M. Saeedi, Hana M. Almarri, Nadiyah M. Alabdallah, Mohammed A. Alamri, Hissah Saedoon Albaqawi, Amira R. Algamdi, Fayez A. Alfayez, Saleh M. Alluqmani

“…The optical conductivity of the composite reached 2.1 × 10⁶ S⁻¹ at 600 °C, which indicates an enhancement in charge transfer among the optimized chemical elements in the waste composite. These findings suggest an optimization method for novel composites derived from steel slag waste, indicating its potential as a low-cost material for energy storage systems (batteries, supercapacitors, and fuel cells) and optoelectronic devices.…”
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Transitioning towards circular economy through municipal solid waste analysis and characterisation using SowaCLINK software by Ishmael Onungwe, Ishmael Onungwe, Dexter V. L. Hunt, Ian Jefferson

“…The geometric mean was applied to forecast the area’s population for a 10-year design period. The chemical elements of the characterized municipal solid waste were utilized based on the ASTM-D5291 standard for municipal solid waste thermochemical conversion, and the high and low heating values were analyzed. …”
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A Laboratory Simulation Experiment to Assess Permeability and Shear Strength of a Gravel Soil Colluvium by Xiaoliang Xu, Jiafu Zhang, Enyue Ji, Lehua Wang, Peng Huang, Xiaoping Wang

“…Combined with <i>XRF</i> and <i>NMR</i> tests, the spatial variation of the permeability coefficient and shear strength parameters is discussed from the perspective of chemical elements, minerals content, and porosity, and the stability analysis of a colluvium landslide is carried out considering the influence of parameters along the elevation. …”
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Assessing the impact of forest conversion to plantations on soil degradation and forest water conservation in the humid tropical region of Southeast Asia: Implications for forest r... by Xiao-Jin Jiang, Haofei Wang, Sissou Zakari, Xiai Zhu, Ashutosh Kumar Singh, Youxing Lin, Wenjie Liu, Jiaqing Liu, Chunfeng Chen

“…Water flow behaviours not only influenced the distribution of soil chemical elements but also played a crucial role in forming appropriate conditions for nutrient turnover. …”
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Linking Metallic Micronutrients and Toxic Xenobiotics to Atherosclerosis and Fatty Liver Disease—Postmortem ICP-MS Analysis of Selected Human Tissues by Jacek Baj, Beata Kowalska, Aleksandra Barbachowska, Alicja Forma, Michał Flieger, Dariusz Majerek, Grzegorz Teresiński, Wojciech Flieger, Piero Portincasa, Grzegorz Buszewicz, Elżbieta Radzikowska-Büchner, Jolanta Flieger

“…Our results confirm the involvement of chemical elements in the pathogenesis of selected metabolic diseases, and the need for further studies in larger populations.…”
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Assessment of technogenic pollution of the urban environment in Chita by the snow cover state by E. A. Bondarevich

“…The total pollution index (ZC = 72.5) with consideration for the toxicity of chemical elements (ZCT = 98.8) shows that the geochemical conditions in Chita is at the average level. …”
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Formation of nickel–iron meteorites by chemical fluid transport by Werner Schrön

“…This study is based on a thermodynamic trend analysis of solid–gas equilibrium reactions involving chlorine- and fluorine-containing compounds of 42 chemical elements that include a systematic examination of reaction dominance switching behavior. …”
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Analysis of the heterogeneity of the chemical composition of snow cover using clustering methods (k-means) and GIS-technolog by A. V. Zakharchenko, D. V. Moskovchenko, A. A. Tigeev

“…If sampling points have a high (or low) content of individual chemical elements, but are located among the points with lower (or higher) content, then the problem of formation of them arises. …”
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Aplicação de silício em arroz de terras altas irrigado por aspersão = Silicon application in upland rice under sprinkler irrigation by Marcos Aguiar dos Reis, Orivaldo Arf, Matheus Gustavo da Silva, Marco Eustáquio de Sá, Salatiér Buzetti

“…<br><br>The use of chemical elements considered as beneficial to crops has become common among farmers. …”
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Experimental study on the influences of cutter geometry and material on scraper wear during shield TBM tunnelling in abrasive sandy ground by Shaohui Tang, Xiaoping Zhang, Quansheng Liu, Qi Zhang, Xinfang Li, Haojie Wang

“…The wear resistance of the modelled scrapers made of different metal materials is related to the chemical elements and microstructure. The wear resistances of the modelled scrapers made of 45#, 06Cr19Ni10, 42CrMo4 and 40CrNiMoA are 0.569, 0.661, 0.691 and 0.728 times those made of WC-Co, respectively. …”
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Controlled release of silica-coated insulin-loaded chitosan nanoparticles as a promising oral administration system by Mohamed M. Fathy, Asmaa A. Hassan, Anwar A. Elsayed, Heba M. Fahmy

“…Transmission electron microscopy (TEM), scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) analysis, and atomic force microscopy (AFM) have been used to investigate the chemical elements, size, morphology, and surface properties of the prepared formulations. …”
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The cooling rate effect during a continuously cast billet solidification on the dendritic structure features of carbon steel by O.I. Babachenko, K.G. Domina, G.A. Kononenko, O.L. Safronov, O.P. Klinova

“…Based on the results of X-ray microanalysis, it has been established that the heterogeneity of the distribution of chemical elements, which is formed as a result of dendritic segregation of silicon and manganese, is the primary and constant component of the microstructure of carbon steel.…”
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Pure Beta Emitters in Water Samples from Neutron Irradiation Facilities: Activity Determination Via Vacuum Distillation and Liquid Scintillation Counting by Masci D., Ferri D., Gandolfo G., Lepore L., Contessa G.M., Pietropaolo A., Pillon M., Marzo G.A.

“…In most cases several chemical elements may be in solution or suspension in water, because of metallic pipes corrosion when occurring, or functional reasons, e.g. chemical conditioning, addition of antifreeze agent, etc. …”
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A novel source of hospital microorganisms in healthcare settings by E. A. Chezganova, O. S. Efimova, V. M. Sakharova, A. R. Efimova, S. A. Sozinov, Z. R. Ismagilov, E. B. Brusina

“…All samples contained a nanosized particulate matter. Chemical elements comprising dust were carbon (16.26–50.69%), oxygen (20.02–37.50%), nitrogen (1.59–25.03%), hydrogen (2.03–6.67%), sulfur (0.15–2.38%), calcium (0.19–7.49%), silicon (0.21–4.64%), chlorine (0.05–2.83%), sodium (0.07–1.86%), aluminum (0.36–1.78%), iron (0.08–1.61%), magnesium (0.11–1.40%), potassium (0.04–0.85%), and phosphorus (0.04–0.81%).Discussion. …”
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A survey of forest pollution with heavy metals in the Natural Forest Region (NFR) Moravskoslezské Beskydy with particular attention to Jablunkov Pass by P. Fiala, D. Reininger, T. Samek

“…The spatial distinctness of Jablunkov Pass was expressed on the basis of selected soil characteristics (quantity of organic material, exchangeable pH, content of total nitrogen, zinc, lead, chromium, cadmium) and of the contents of chemical elements (total nitrogen, magnesium, zinc, lead, chromium, cadmium) in two-years-old Norway spruce needles. …”
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Tracking the Lithium and Strontium Isotope Signature of Hydrothermal Plume in the Water Column: A Case Study at the EMSO-Azores Deep-Sea Observatory by Lise Artigue, Valérie Chavagnac, Christine Destrigneville, Bruno Ferron, Cécile Cathalot

“…Lithium (Li) and strontium (Sr) are two economically relevant chemical elements whose oceanic biogeochemical cycles are not fully constrained. …”
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