Results 41 to 50 of about 48,292 (273)

Prebiotic Chemistry of Phosphite: Mild Thermal Routes to Form Condensed-P Energy Currency Molecules Leading Up to the Formation of Organophosphorus Compounds

Life, 2023
The in-fall of meteorites and interstellar dust particles during the Hadean–Archean heavy bombardment may have provided the early Earth with various reduced oxidation state phosphorus compounds and minerals, including phosphite (HPO32−)([Pi(III)]).
Maheen Gull, Tian Feng, Harold A. Cruz, Ramanarayanan Krishnamurthy, Matthew A. Pasek   +4 more
doaj   +1 more source

Some Problems of Elementary Particles Physics and Gilbert’s Postulate

Journal of Modern Physics, 2016
William Gilbert formulated over 400 years ago a postulate that can be considered as the main principle of modern natural sciences [1]: All theoretical constructs that claim to be scientific must be verified and confirmed experimentally. Despite of past centuries, this principle has not lost its relevance today.
openaire   +2 more sources

Development of Mass – Size Particle Reduction Operations Postulates Using Empirical – Analytical Approaches

Current Journal of Applied Science and Technology, 2020
Aims: This paper attempts to utilize empirical and analytical approaches to develop equations and postulates for energy and power requirement in mass – size reduction operations. Study Design:  The study is based on a combination of analytical approach and empirically  existing energy model obtained in a study of milling palm nut shells into ...
openaire   +2 more sources

Constructing and Constraining Wave Functions for Identical Quantum Particles [PDF]

, 2016
I address the problem of explaining why wave functions for identical particles must be either symmetric or antisymmetric (the symmetry dichotomy) within two interpretations of quantum mechanics which include particles following definite trajectories in ...
Sebens, Charles T.
core  

A novel quinazolinone insulin receptor inhibitor and its synergy with an EGFR inhibitor in glucose‐driven glioblastoma

Molecular Oncology, EarlyView.
The novel styrylquinazolinone‐based molecule W1B effectively suppresses glioblastoma by inhibiting IGF1R and EGFR. In high‐glucose microenvironments driving tumor resistance, W1B acts synergistically with the EGFR inhibitor dacomitinib. This combination safely blocks compensatory survival signaling in zebrafish xenograft models. Showcasing promising in
Patryk Rurka, Wioleta Cieślik, Wojciech Płaziński, Katarzyna Stępnik, Anna Boguszewska‐Czubara, Elżbieta Kot, Robert Musioł, Mateusz Jasica, Anna Mrozek‐Wilczkiewicz, Katarzyna Malarz   +9 more
wiley   +1 more source

Altered properties of high density lipoprotein subfractions in obese subjects

Journal of Lipid Research, 1997
Human HDL are heterogeneous in their metabolism and comprise small, nascent pre-beta-HDL and more mature alpha-HDL. Evidence exists that pre-beta 1-HDL is the initial acceptor of cellular free cholesterol, which then transfers sequentially to other pre ...
T Sasahara, T Yamashita, D Sviridov, N Fidge, P Nestel   +4 more
doaj   +1 more source

Irradiation test OF-2: high-temperature irradiation behavior of LASL-made fuel rods and LASL-made coated particles. [ZrC coated particles]

, 1977
Three LASL-made, substoichiometric ZrC-coated particles with inert kernels, and two high-density molded graphite fuel rods that contained LASL-made, ZrC-coated fissile particles were irradiated in the Oak Ridge Research Reactor test OF-2.
Schell, D. H., O'Rourke, J. A., White, R. W., Hollabaugh, C. M., Reiswig, R. D., Davidson, K. V., Wagner, P.   +6 more
core   +1 more source

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source

Aggregation of montmorillonite and organic matter in aqueous media containing artificial seawater

Geochemical Transactions, 2009
Background The dispersion-aggregation behaviors of suspended colloids in rivers and estuaries are affected by the compositions of suspended materials (i.e., clay minerals vs. organic macromolecules) and salinity.
Kim Jinwook, Watkins Janet L, Furukawa Yoko, Curry Kenneth J, Bennett Richard H   +4 more
doaj   +1 more source

Chameleon sequences reveal structural effects in proteins representing micelle‐like distribution of hydrophobicity

FEBS Open Bio, EarlyView.
Amino acids sequence of two different proteins with the same sequence (chameleon sequence—black boxes) represent in 3D structure of the proteins different secondary structures: HHHH—helical and BBB—Beta‐structural. The chains folded in water environment adopt different III‐order structures in which the chameleon fragments appear to adopt similar status
Irena Roterman, Katarzyna Stapor, Leszek Konieczny, Krzysztof Gądek, Piotr Nowakowski   +4 more
wiley   +1 more source