Results 71 to 80 of about 12,380 (234)
Chemistry – A European Journal, EarlyView.The synthesis of 2‐methyl propellane and its conversion to various 1,2‐ and 1,2,3‐di‐ and trisubstituted bicyclopentanes is reported. Abstract Bicyclo[1.1.1]pentanes (BCPs) have emerged as isosteric replacements for mono‐ and para‐substituted benzene rings in medicinal and materials applications, involving substitution at the BCP bridgehead (1,3 ...
Sean R. Verschaeve +4 more
wiley +1 more source
Controlling meiotic recombinational repair - specifying the roles of ZMMs, Sgs1 and Mus81/Mms4 in crossover formation. [PDF]
PLoS Genetics, 2014 Crossovers (COs) play a critical role in ensuring proper alignment and segregation of homologous chromosomes during meiosis. How the cell balances recombination between CO vs. noncrossover (NCO) outcomes is not completely understood.
Ashwini Oke +3 more
doaj +1 more source
Density of States and Tachyons in Open and Closed String Theory [PDF]
, 2001 In this note we reexamine the possibility of constructing stable non-supersymmetric theories that exhibit an exponential density of states. For weakly coupled closed strings there is a general theorem, according to which stable theories with an ...
Niarchos, Vasilis
core +2 more sources
Low‐Temperature Initiation Enhances HCN and NH3 Formation From Methane and NO Over Pt/Al2O3
Chemistry – A European Journal, EarlyView.Hydrogen cyanide (HCN) was formed from CH4 and NO over Pt/Al2O3 at low temperatures. Increasing NO concentration and optimizing reaction‐start conditions significantly enhanced HCN yield. In situ FTIR and DXAFS measurements revealed that dynamically balancing Pt‑CO and Pt‑CN surface species, particularly their desorption under temperature‑swing ...
Emika Yamashita +3 more
wiley +1 more source
The Canadian Journal of Chemical Engineering, EarlyView.Schematic of the CO adsorption process in a fixed‐bed column containing pure NaY zeolite and Nb‐modified NaY (NaY–5%Nb). On the left, breakthrough curves and temperature profiles highlight the dynamic performance and thermal effects during CO adsorption.
Elson Oliveira +3 more
wiley +1 more source
Comparison of competing market mechanisms with reinforcement learning in a carpooling scenario
Transportation Research Interdisciplinary Perspectives, 2020 In this paper a multi-agent simulation was implemented to analyze the dynamics of different market mechanisms with a Reinforcement Learning algorithm in the context of a carpooling market. The agents in the simulation, car owners (COs) and non car owners
Thomas Pitz +4 more
doaj +1 more source
, 2003 We examine the extent to which the action for the membrane of M-theory (the eleven-dimensional construct which underlies and unifies all of the known string theories) simplifies in the so-called Open Membrane (OM) limit, a limit which lies at the root of
Garcia, J. Antonio +2 more
core +2 more sources
ChemSusChem, Volume 18, Issue 6, March 15, 2025.A sustainable alternative to steam cracking, the molten‐salt‐mediated oxidative dehydrogenation (MM‐ODH) of ethane (C2H6) in Li2CO3‐Na2CO3‐K2CO3 (LNK) couples thermal cracking with melt‐mediated CO2 capture to realize commercially competitive C2H4 and CO yields. LNK composition strongly influences MM‐ODH process outcomes.
Kyle Vogt‐Lowell +6 more
wiley +1 more source
Milli-second Oscillations in the Persistent and Bursting Flux of Aql X-1 During an Outburst [PDF]
, 1997 The Rossi X-Ray Timing Explorer observed the soft X-Ray transient Aql X-1 during its outburst in February and March 1997. We report the discovery of quasi-periodic oscillations (QPOs) in its persistent flux with frequencies in the range of 740 to 830 Hz,
Hasinger G. +6 more
core +2 more sources
A shock tube study of reactions of NCO with O and NO using NCO laser absorption
Symposium (International) on Combustion, 1992 The absorption coefficient of NCO at 440.4790 nm (vac) was determined using a cw ring dye laser and shock-heated HNCO/N2O/Ar mixtures at temperatures and pressures ranging from 2180 K to 3070 K and 0.9 to 1.1 atmospheres, respectively. The source of NCO in these experiments was the reaction O+HNCO→OH+NCO (2a) where the O-atoms were produced by the ...
John D. Mertens +3 more
openaire +1 more source