Results 91 to 100 of about 584,997 (254)

N,N′-[(8-endo,11-endo-Dihydroxypentacyclo[5.4.0.02,6.03,10.05,9]undecane-8,11-diyl)bis(methylenecarbonyl)]di-l-phenylalanine

Acta Crystallographica Section E, 2010
The title compound, C33H36N2O8, is the first example of a disubstituted peptidic pentacycloundecane (PCU) diol. The structure displays an array of inter- and intramolecular hydrogen bonding by both amide and alcohol functional groups.
Glenn E. M. Maguire, Thavendran Govender, Hendrik G. Kruger, Patrick Govender, Rajshekhar Karpoormath   +4 more
doaj   +1 more source

Handbook of Establishing and Maintaining Oxygen‐Free Atmospheres

Advanced Engineering Materials, EarlyView.
This study presents a practical framework for creating oxygen‐free atmospheres at ambient pressure using silane‐doped inert gases. The results show that ultra‐low oxygen levels and strongly reduced water content can be achieved through controlled silane dosing, drying systems, and sensor monitoring.
Sascha Jan Zimmermann, René Gustus, Lienhard Wegewitz, Wolfgang Maus‐Friedrichs   +3 more
wiley   +1 more source

Crystal structure of catena-poly[[[tetraaquacobalt(II)]-μ2-1,5-dihydroxynaphthalene-2,6-dicarboxylato] dimethylformamide disolvate]

Acta Crystallographica Section E: Crystallographic Communications
The asymmetric unit of the title compound, {[Co(C12H6O6)(H2O)4]·2C3H7NO}n or {[Co(H2dondc)(H2O)4]·2DMF}n, comprises half of a CoII ion, half of a 1,5-dihydroxynaphthalene-2,6-dicarboxylate dianion (H2dondc2−), two water molecules and a dimethylformamide (
Hitoshi Kumagai, Satoshi Kawata, Nobuhiro Ogihara   +2 more
doaj   +1 more source

Elastic energy of proteins and the stages of protein folding

, 2009
We propose a universal elastic energy for proteins, which depends only on the radius of gyration $R_{g}$ and the residue number $N$. It is constructed using physical arguments based on the hydrophobic effect and hydrogen bonding.
Branden C., de Gennes P. G., Flory P., Garrett R. H., Hong L., Huang K., J. Lei, K. Huang, Ptitsyn O. B.   +8 more
core   +1 more source

Oxide‐Free Titanium Coatings by Wire Arc Spraying in a Silane‐Doped Inert Atmosphere

Advanced Engineering Materials, EarlyView.
A silane‐doped argon atmosphere enables the production of oxide‐free titanium coatings via twin‐wire arc spraying at ambient pressure. This innovative approach eliminates residual oxygen, creating process conditions that prevent oxidation and nitride formation.
Manuel Rodriguez Diaz, Maik Szafarska, René Gustus, Kai Möhwald, Hans Jürgen Maier   +4 more
wiley   +1 more source

Hydrogen bonding and coordination in normal and supercritical water from X-ray inelastic scattering

, 2007
A direct measure of hydrogen bonding in water under conditions ranging from the normal state to the supercritical regime is derived from the Compton scattering of inelastically-scattered X-rays.
A. G. Kalinichev, A. Nilsson, Abhay Shukla, Bernardo Barbiellini, Christophe Bellin, D. Eisenberg, D. Testemale, J. D. Smith, J.-L. Hazemann, M. Cooper, Nicola Marzari, Patrick H.-L. Sit, T. Buslaps   +12 more
core   +3 more sources

Application of Raman and Photoluminescence Spectroscopy to MgO‐C Refractories

Advanced Engineering Materials, EarlyView.
Visible to near infrared luminescence of MgO is studied on MgO‐C bricks and nominally pure MgO powder, with focus on two similar sharp high‐intensity signals, at 699 and 871 nm, each surrounded by symmetrical sidebands. The nature of these sidebands is investigated by temperature‐dependent spectroscopic measurements, confirming phonon involvement by ...
Julia Richter, Felix Drechsler, Till M. J. Stadtmüller, Cameliu Himcinschi, Christos G. Aneziris, Jens Kortus   +5 more
wiley   +1 more source

Tailored Hierarchical Porous Copper Architectures via Three Dimensional Printing and Pressure‐less Sintering for Next‐Generation Lithium‐Metal Batteries

Advanced Engineering Materials, EarlyView.
A hierarchical porous copper current collector is fabricated via three‐dimensional printing combined with pressureless sintering to stabilize lithium metal anodes. The interconnected architecture lowers local current density, guides uniform Li deposition within pores, and suppresses dendrite growth.
Alok Kumar Mishra, Mukul Shukla
wiley   +1 more source

Hydrogen Bonding: Between Strengthening the Crystal Packing and Improving Solubility of Three Haloperidol Derivatives

Molecules, 2016
The purpose of this study is to confirm the impact of polar functional groups on inter and intra-molecular hydrogen bonding in haloperidol (HP) and droperidol (DP) and, hence, their effects on dissolution using a new approach.
Hardeep Saluja, Ahmed Mehanna, Riccardo Panicucci, Eman Atef   +3 more
doaj   +1 more source

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm, Jana Hubálková, Christian Schimpf, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +6 more
wiley   +1 more source