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Single crystals of cubic boron nitride (cBN) exceeding 10 mm in size were grown by the high-pressure high-temperature (HPHT) temperature-gradient method using a Ni-Cr-based solvent catalyst. Compared with the previously reported maximum crystal size of approximately 3 mm, this improvement was achiev…
…preventing dipole reorientation and enabling measurements in solutions at ambient conditions. Here, we extend TRTSS to molecules dissolved in water, the most important polar solvent for chemical and biological systems and report the first demonstration of Stark spectroscopy in water at room tempera…
…subdiffusion and remains dynamically coupled to the water matrix. A characteristic confinement length scale emerges at which structural ordering, dynamical heterogeneity, and solvent solute decoupling are simultaneously maximized. At strong confinement, three dimensional correlations are suppressed…
…are solvent and polymeric viscosities, respectively. For weak viscoelasticity, the dimensionless hole radius grows approximately as $e^{(0.5+αWi β_p)T}$, where $α=(12 - 6\log 2-π)/21\approx 0.224$ and $β_p=μ_p/(μ_s+μ_p)$. In the ultra-dilute limit, the radius grows approximately as $e^{(0.5+α^{*}β_…
…enhanced when the base flow has a nonuniform spatial-distribution of polymers. Specifically, we consider a polymer-laden stream sandwiched between streams of pure solvent. In such a flow, the polymeric stress not only depends on the conformation tensor (determined here by the Oldroyd-B equation) bu…
Trace residual solvents in solid polymer electrolytes (SPEs) significantly affect electrolyte and interface properties, where optimal selection enhances ionic conductivity and transference numbers. However,… ▽ More Trace residual solvents in solid polymer electrolytes (SPEs) significantly affect ele…
We develop a thermodynamic theory of electric double layers in binary liquid mixtures by allowing the Stern-layer capacitance to depend on the local solvent composition. This coupling produces an additional negative contribution to the inverse differential capacitance. As a result, the surface poten…
The Poisson-Boltzmann (PB) theory is a cornerstone of implicit solvent models for electrostatic analysis, and has found a great success in various biomolecular applications. However, in calculating polar solvation energy, one should consider that the structure of the protein changes upon transition …
Volumetric variation confinement: surface protective structure for high cyclic stability of lithium metal electrodes 作者： Peng, Z [Peng, Zhe][ 1 ] 1 Wang, SW [Wang, Shuwei][ 1 ] 1 Zhou, JJ [Zhou, Jingjing][ 1 ] 1 Jin, Y [Jin, Yan][ 1 ] 1 Liu, Y [Liu, Yang][ 1 ] 1 Qin, YP [Qin, Yinping][ 1 ] 1 Shen, C…
Lipid was extracted from dried powdered sewage sludge using a soxhlet extractor and a mixture of n–hexane and diethyl ether as extracting solvents in a ratio of 2 1. The extracted lipid was brownish black in color with a pungent smell. The physical parameters showed percentage yield of 0.58 , densit…
16 p. ; 28 cm
APPROVED FOR RELEASE. 06/23/11 CIA-RDP86-005138000825300013-6APPROVED FOR RELEASE. 06/23/11 CIA-RDP86-005138000825300013-6APPROVED FOR RELEASE. 06/23/11 CIA-RDP86-005138000825300013-6APPROVED FOR RELEASE. 06/23/11 CIA-RDP86-005138000825300013-6APPROVED FOR RELEASE. 06/23/11 CIA-RDP86-005138000825300…
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A carbon composite structure, for example, an automotive engine piston, is made by preparing a matrix including of a mixture of non crystalline carbon particulate soluble in an organic solvent and a binder that has a liquid phase. The non crystalline particulate also contains residual carbon hydroge…
An apparatus is provided which can process numerous samples that must be chemically analyzed by the application of fluids such as liquid reagents, solvents and purge gases, as well as the application of dumps for receiving the applied fluid after they pass across the sample, in a manner that permits…
Efforts to commercialize organic solar cells (OSCs) by developing roll-to-roll compatible modules have encountered challenges in optimizing printing processes to attain laboratory-level performance in fully printable OSC architectures. In this study, we present efficient OSC modules fabricated solel…
Electrospinning is one of the simplest techniques for obtaining polymer nano fibers. Nanofibers have large surface area to volume ratio and hence have excellent application potential in sensors, filter design etc. Polyaniline (PANI) is the well-known and widely studied conducting polymer, which howe…
Abstract The activity of lithium ions in electrolytes depends on their solvation structures. However, the understanding of changes in Li+ activity is still elusive in terms of interactions between lithium ions and solvent molecules. Herein, the chelating effect of lithium ion by forming [Li(15C5)]+ …
This work presents the development and application of an innovative green supramolecular deep eutectic solvent (SUPRADES)-based DLLME approach for the extraction and quantification of melamine in milk matrices. For this purpose, thymol and nonanoic acid were combined to create a hydrophobic DES, whi…
Introduction: This study assesses the environmental impacts of mannosylerythritol lipids (MELs) production for process optimization using life cycle assessment (LCA). MELs are glycolipid-type microbial biosurfactants with many possible applications based on their surface-active properties. They are …
Current biodiesel production is costly, in part due to the catalysts added during transesterification and later washed out. We have previously shown that intact rapeseed shells can be ball-milled with an alcohol to produce biodiesel without an added catalyst. Here, we report on the activation and id…
This study describes the application of the Art of Scientific and Technological Search to strategically analyze areas of technological and industrial development. Application of scientific search strategies such as the creation of Patent Landscape has been shown to be useful for writing research pro…
Objective: To investigate antidiabetic and antioxidant activities of the extract and fractions from Vietnamese red seaweed Laurencia dendroidea. Methods: The seaweed Laurencia dendroidea was extracted by using microwave-assisted extraction method in 80% methanol. The seaweed extract was then fractio…
This study investigates the efficiency and effectiveness of green solvents in chemical reactions, comparing their performance to traditional solvents in terms of reaction yield, time, selectivity and environmental impact. Green solvents such as water, ionic liquids, deep eutectic solvents (DES), and…
Tungsten is a scarce and valuable metal with a wide range of applications. Currently, the recovery of tungsten from scheelite concentrates involves the use of strong acids, alkalis, and/or high temperatures (roasting). Deep Eutectic Solvents (DES) are proposed as an environmentally friendly alternat…
Schiff bases are known to possess antiviral, antifungal, antibacterial, enzymatic and other significant biological properties. They also chelate metals to form complexes that have been used in industrial processes. Schiff bases are also important in modern energy applications due to their photometri…
Department of Chemistry, B. C. B. College, Puri Department of Chemistry, Ravenshaw College, Cuttaok-3 Manuscript received 4 February 1982, revised 16 July 1982, accepted 10 March 1983 Viscosity of Sr(NO3)2 and Cd(NO3)2 in Mixed Solvents at Different Temperatures.
Precision cleaning solvents for aerospace components and oxygen fuel systems, including currently used Vertrel-MCA, have a negative environmental legacy, high global warming potential, and have polluted cleaning sites. Thus, alternative solvents and technologies are being investigated with the aim o…
Because of health and environmental concerns, many regulations have been passed in recent years regarding the use of chlorinated solvents. The Oak Ridge Y-12 Plant has had an active program to find alternatives for these solvents used in cleaning applications for the past 7 years. During this time f…
Screening of inorganic compounds as solvents for electrolytes in high energy density battery systems
Components in the aerospace industry must perform with accuracy and precision under extreme conditions, and surface contamination can be detrimental to the desired performance, especially in cases when the components come into contact with strong oxidizers such as liquid oxygen. Therefore, precision…
Aerospace machinery used in liquid oxygen (LOX) fuel systems must be precision cleaned to achieve a very low level of non-volatile residue (< 1 mg0.1 m2), especially flammable residue. Traditionally chlorofluorocarbons (CFCs) have been used in the precision cleaning of LOX systems, specifically CFC …
Spore recovery form cured silicone potting compounds using amine solvents to degrade the cured polymers was investigated. A complete list of solvents and a description of the effect of each on two different silicone polymers is provided.
For many years, chlorofluorocarbon (CFC) and chlorocarbon solvents have played an important part in aerospace operations. These solvents found extensive use as cleaning and analysis (EPA) solvents in precision and critical cleaning. However, CFCs and chlorocarbon solvents have deleterious effects on…
Solvent-based dissolution/precipitation plastic recycling processes are emerging as a promising alternative to mechanical recycling, enabling the selective dissolution of polymers from contaminated plastic waste streams. Identifying suitable solvents for such processes requires an accurate assessmen…
In this work, we have examined the predictive capability of a machine leaning model based on the XGBoost framework as regards the solubility of active pharmaceutical ingredient-like molecules in organic solvents over a wide range of temperatures. A total of 30 binary mixtures has been investigated. …
The solvent dispersibility of two-dimensional particles with pseudo- and permanently interlocked polyethylene oxide brushes was investigated. Their dispersibility was determined by desorption or retention of the polyethylene oxide axis of two-dimensional particles. This study provides new insight in…
Despite rapid advances in perovskite solar cells, solvent selection remains a central determinant of safety, process robustness, and end-of-life outcomes. These constraints are multi-dimensional and involve competing trade-offs, making them challenging to resolve through experimental optimization al…
Active Pharmaceutical Ingredients (APIs) manufacturing requires a three-step batch process, including crystallization, followed by filtration and drying, which is energy-intensive and requires the use of significant amounts of solvents per mass of API produced. These methods are often inefficient an…
Predicting the chemical resistance of polymers to organic solvents is a longstanding challenge in materials science, with significant implications for sustainable materials design and industrial applications. In this study, we present an interpretable data-driven framework that extends analysis of p…
The current study aimed to investigate the efficacy of green solvents to extract bioactive compounds from <i>S. sclarea</i> and evaluate their antioxidant and enzyme inhibition potential. Three natural deep eutectic solvent (NADES) formulations were synthesized: NADES-1 (choline chloride: citric aci…
In polymer electrolytes, poly(ε-caprolactone) (PCL) provides a lower lithium cation coordination strength as compared to the classically employed poly(ethylene oxide) (PEO), leading to enhanced lithium transference. Similar to PEO, however, PCL suffers from poor ionic conductivity, motivating plasti…
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