Results 21 to 30 of about 3,781,135 (297)

Ionic Liquid Lubricant for Ultra-Low Head-Media Spacing in Hard Disk Drives

open access: yesTribology Online, 2020
In order to attain high recording density in a hard disk drive, reduction of the head-media spacing (HMS) is crucial. The contribution of lubricant thickness to the HMS is a significant factor in performance.
Kouki Hatsuda, Nobuo Tano, Hiroshi Tani
doaj   +1 more source

CONFORMATIONAL TRANSITIONS IN MOLECULAR SYSTEMS [PDF]

open access: yesPath Integrals — New Trends and Perspectives, 2008
Proteins are the "work horses" in biological systems. In almost all functions specific proteins are involved. They control molecular transport processes, stabilize the cell structure, enzymatically catalyze chemical reactions; others act as molecular motors in the complex machinery of molecular synthetization processes.
Bachmann, Michael, Janke, Wolfhard
openaire   +2 more sources

An NMR and molecular modelling study on the solution conformation of Heparan Sulphate: new insights into the relationship between structure and function [PDF]

open access: yes, 2007
A deeper insight into the structural biology of HS is key to understanding its nearuniversal functional role as a co-receptor for growth factors and morphogens.
Murphy, K.J.
core   +4 more sources

Theoretical Study of Some Nitrososulfamide Compounds with Antitumor Activity

open access: yesMolecules, 2004
The lowest-energy conformations of four 2-chloroethylnitrososulfamides were determined using the MM+ molecular mechanics method as implemented in Hyperchem 6.0. Some of the calculated structural parameters, angles and bonds lengths were compared with the
Madi Fatiha   +2 more
doaj   +1 more source

Functionalized 3-(5-aryloxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)-1-(4-substituted-phenyl)prop-2-en-1-ones: synthetic pathway, and the structures of six examples

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2020
Five examples each of 3-(5-aryloxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)-1-[4-(prop-2-yn-1-yloxy)phenyl]prop-2-en-1-ones and the corresponding 1-(4-azidophenyl)-3-(5-aryloxy-3-methyl-1-phenyl-1H-pyrazol-4-yl)prop-2-en-1-ones have been synthesized in a ...
Haruvegowda Kiran Kumar   +6 more
doaj   +1 more source

Structural investigation of N-[2-(4-fluoro-3-phenoxybenzoyl)hydrazinecarbothioyl]benzamide and N-[2-(4-fluoro-3-phenoxybenzoyl)hydrazinecarbothioyl]-4-methoxybenzamide

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2021
The compound N-[2-(4-fluoro-3-phenoxybenzoyl)hydrazinecarbothioyl]benzamide, C21H16FN3O3S, crystallizes in the monoclinic centrosymmetric space group P21/c and its molecular conformation is stabilized via an intramolecular N—H...O hydrogen bond.
Dhananjay Dey   +3 more
doaj   +1 more source

Molecular Modelling of the Complex Polysaccharide Heparan Sulphate [PDF]

open access: yes
Heparan Sulphate plays an important role in many life processes and so an understanding of its role as a universal co-receptor is of great importance. Traditionally oligosaccharides derived from the related molecule heparin have been at the forefront of
Swift, Simone
core   +3 more sources

The Rotational Barrier in Ethane: A Molecular Orbital Study

open access: yesMolecules, 2012
The energy change on each Occupied Molecular Orbital as a function of rotation about the C-C bond in ethane was studied using the B3LYP, mPWB95 functional and MP2 methods with different basis sets.
Gonzalo J. Mena-Rejón   +3 more
doaj   +1 more source

Modeling of Ultrasound-Assisted Extraction, Chemical Composition, Antioxidant Activity, Rheological Aspects, and Biological Properties of “Barhang-e-Kabir” Mucilage [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2021
In this study, response surface methodology (RSM) was used to investigate the influence of independent process parameters including water to seed ratio (g/g), temperature (°C), time (min), and ultrasonic intensity (%) on the extraction yield of “Barhang ...
Behrooz Alizadeh Behbahani   +1 more
doaj   +1 more source

On the dynamics of molecular conformation [PDF]

open access: yesProceedings of the National Academy of Sciences, 2006
Understanding the mechanism of fast transitions between conformed states of large biomolecules is central to reconciling the dichotomy between the relatively high speed of metabolic processes and slow (random-walk based) estimates on the speed of biomolecular processes.
openaire   +2 more sources

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