Results 131 to 140 of about 12,174,017 (385)

Reduction by a Model of NAD(P)H. XVII. Isotope Effects and Magnesium Ion Catalysis [PDF]

, 1978
Atsuyoshi Ohno, Shinro Yasui, Hiroyuki Yamamoto, Shinzaburo Oka, Yutaka Ohnishi   +4 more
openalex   +1 more source

Monte Carlo evaluation of the equilibrium isotope effects using the Takahashi-Imada factorization of the Feynman path integral

, 2013
The Feynman path integral approach for computing equilibrium isotope effects and isotope fractionation corrects the approximations made in standard methods, although at significantly increased computational cost.
Buchowiecki, Marcin, Vanicek, Jiri
core   +1 more source

Silver Ion‐Mediated [hk1]‐Oriented Sb2Se3 Crystal Growth for Efficient Photoelectrochemical Hydrogen Evolution

Advanced Functional Materials, EarlyView.
Ag+‐mediated hydrothermal crystal engineering promotes preferential [hk1]‐oriented growth of Sb2Se3 via an ultrathin MoOx interlayer, improving crystallinity and suppressing non‐radiative recombination. The optimized Ag+ treatment photocathode delivers 24.7 mA cm−2 at 0 VRHE and improved stability, revealing an ion‐modulated route to high‐performance ...
Ziying Zhang, Zhenbin Wang, Mirjana Dimitrievska, Miloš Baljozović, Yongping Gan, Pardis Adams, Sanghyun Bae, Thomas Moehl, Wenzhe Niu, Xiang jiu Guan, S. David Tilley   +10 more
wiley   +1 more source

^<18>O/^<16>O Activity Ratio at 0℃ of Salt Water of Don Juan Pond and Lake Bonney, Dry Valleys, Antarctica

Antarctic Record, 1977
The oxygen isotope ratio determined from CO_2 equilibrated isotopically with the water sample provides the oxygen isotope activity ratio of the water sample.
Kikuo KATO
doaj   +1 more source

Oxygen-isotope effect on the in-plane penetration depth in cuprate superconductors

, 2004
Muon-spin rotation (muSR) studies of the oxygen isotope (^{16}O/^{18}O) effect (OIE) on the in-plane magnetic field penetration depth lambda_{ab} in cuprate high-temperature superconductors (HTS) are presented.
A Shengelaya, Alexandrov A S, Anderson P W Lee P A Randeria M Rice T M Trivedi N Zhang F C, Bednorz J G, Bornermann H J, Bussmann-Holder A, Carbotte J P, Chandrasekhar B S, Conder K, Di Castro D, E Morenzoni, Franck J P, Franck J P, H Keller, I M Savi, K Conder, Keller H Schneider T, Khasanov R, Khasanov R, Morenzoni E, Müller K A, Müller K A, R Khasanov, Scalapino D J Scalettar R T Bickers N E S E Wolf V Z Kresin, Seaman C L, Zech D, Zhao G M, Zhao G M, Zhao G M, Zhao G M, Zhao G M, Zimmermann P   +31 more
core   +1 more source

Coherent Control of Nitrogen Nuclear Spins via the VB−${\rm V}_B^-$‐Center in Hexagonal Boron Nitride

Advanced Functional Materials, EarlyView.
This study demonstrates coherent control of 15N nuclear spins coupled to VB−${\text{V}}_{\text{B}}^{-}$ centers in isotope‐enriched hexagonal boron nitride. Selective addressing via spin‐state mixing enables Rabi driving, quantum gates, and coherence times exceeding 10 μs$\umu{\rm s}$.
Adalbert Tibiássy, Charlie J. Patrickson, Thomas Poirier, James H. Edgar, Bruno Lopez‐Rodriguez, Viktor Ivády, Isaac J. Luxmoore   +6 more
wiley   +1 more source

Multipurpose Transparent Nanocomposites for Gamma Spectroscopy, Pulse Shape Discrimination, Thermal Neutron Detection, Radiation Shielding, and High Refractive Index Applications

Advanced Functional Materials, EarlyView.
Materials exist that are useful for gamma scintillation, radiation shielding, neutron‐gamma pulse shape discrimination (PSD), thermal neutron detection, or high refractive index applications. While certain materials have exhibited optimal performance for each of these applications, none achieve multiple functions.
Isabelle Winardi, Stephane Miaule, Robert Carmichael, Bowen Sun, Ziqing Han, Prabhav Surabhi, Zhen Luo, Noelan Hum, David Prout, Yi‐An Chen, Ting‐Hsuan Wu, Hao Yu, Arion Chatziioannou, Qibing Pei   +13 more
wiley   +1 more source

Trap‐Assisted Transport and Neuromorphic Plasticity in Lead‐Free 2D Perovskites PEA2SnI4

Advanced Functional Materials, EarlyView.
An artificial retina built from lead‐free layered perovskite (PEA)2SnI4 converts light input into a persistent photocurrent and sums successive flashes over time. Micro/nanocrystals integrated on electrodes act as synapse‐like pixels that perform temporal integration directly in hardware. This in‐sensor preprocessing merges detection and computation on
Ofelia Durante, Valeria Demontis, Jonas Riisnaes Karl, Lam Hoi Tung, Sebastiano De Stefano, Daniela Marongiu, Adolfo Mazzotti, Aditya Bhardwaj, Francesco Mattana, Elisa Pili, Selene Matta, Federico Paolucci, Michele Saba, Andrea Mura, Giovanni Bongiovanni, Monica F Craciun, Saverio Russo, Antonio Di Bartolomeo   +17 more
wiley   +1 more source

Kinetic Isotope Effect

, 2014
Molecules with different isotopic compositions generally react with other molecules in the same manner, but their reaction rates show differences due to their mass differences and sometimes also due to the lower natural abundance of certain isotopes. For example, CO2 is heavier than CO2 by about 2.3 %, and the abundance ratio of CO2/ CO2 is about 1.1 %.
openaire   +2 more sources

Natural abundance kinetic isotope effects: expt. vs theory. [PDF]

, 2015
Henry S. Rzepa
openalex   +1 more source