Results 91 to 100 of about 236,548 (255)

Ring particle sizes and composition derived from eclipse cooling curves and reflection spectra [PDF]

The probable chemistry of the Saturn rings is reviewed. Reflectance spectra for H20 and NH3 frosts and Saturn's rings are compared, along with temperature dependence of 1.6 microns water frost feature.
Kieffer, H. H.
core   +1 more source

Scattering of thermal He beams by crossed atomic and molecular beams. IV. Spherically symmetric intermolecular potentials for He+ CH_4, NH_3, H_2O, SF_6 [PDF]

, 1979
Differential scattering cross sections are measured for He+CH_4, NH_3, H_2O, and SF_6, using the crossed molecular beams technique. These data, which are sensitive to the van der Waals attractive minima and adjacent regions of the intermolecular ...
Keil, Mark, Kuppermann, Aron, Slankas, John T.   +2 more
core  

Effects of gastric acid on surface roughness, microhardness, fracture strength, and color change of dental ceramics: A systematic review of in vitro studies

Journal of Prosthodontics, EarlyView.
Abstract Purpose This systematic review evaluated the effects of simulated gastric acid (SGA) on surface and mechanical properties of dental ceramics to answer the research question: Does immersion in SGA alter the surface roughness, microhardness, fracture strength, and color of dental ceramics?
Geany Ferreira Rodrigues, Isaac Augusto Dantas Nogueira, Nicole Escórcio de Meneses, Ana Letícia Daniel Fontenele, Francisbênia Alves Silvestre, Ana Carolina Lima Moreira, Lívia Maria Sales Pinto Fiamengui, Karina Matthes de Freitas Pontes, Raniel Fernandes Peixoto   +8 more
wiley   +1 more source

Metabolomic analyses reveal that graphene oxide alleviates nicosulfuron toxicity in sweet corn

Frontiers in Plant Science
Nicosulfuron can repress the growth and quality of sweet corn (Zea mays), and graphene oxide has been used for sustainable agriculture. However, the underlying mechanism of the toxicity of nicosulfuron that is mediated in sweet corn remains elusive.
Jian Wang, Yanbing Wang, Yanli Wang, Xuemei Zhong, Xiuping Wang, Xiaohu Lin   +5 more
doaj   +1 more source

Pteridines, IXC. Synthesis, Oxidations and Reactions of 6- and 7-Hydroxy-2-thiolumazines Selective Cytotoxicity of Carboxypeptidase-activated Methotrexate ex-Peptides

Pteridines, 1989
Various 6-(10, 11) and 7-hydroxy-2-thiolumazines (8,9) have been synthesized and oxidations of the thioamide function studied . H20 2 Oxidation of 7-hydroxy-2-thiolumazine (8) in basic medium leads to pteridine-4,7- dione-2-sulfinate (12), which ...
Bartke Michael, Pfleiderer Wolfgang
doaj   +1 more source

Screens, Teens, and Sleep: Is the Impact of Nighttime Screen Use on Sleep Driven by Physiological Arousal?

Journal of Sleep Research, EarlyView.
ABSTRACT Few studies have objectively measured both screens and sleep in real‐world settings. This study uses repeated measures to assess heart rate during evening screen use, providing new insights into how these behaviours relate to adolescent sleep. Screen use was recorded using wearable cameras over four nights in 70 youth (37% indigenous Māori, 42%
Kim A. Meredith‐Jones, Jillian J. Haszard, Barbara C. Galland, Shay‐Ruby Wickham, Bradley J. Brosnan, Takiwai Russell‐Camp, Rachael W. Taylor   +6 more
wiley   +1 more source

Rapid Assignment of Chemical Shifts From Crystal Structures in Solid‐State NMR

Angewandte Chemie, Volume 138, Issue 14, 27 March 2026.
Chemical shift assignment in solids is a long and tedious process that relies on complex 1D and 2D NMR experiments. With prior knowledge of the 3D structure, this process can be significantly sped up by a Bayesian probabilistic assignment approach based on predicted chemical shifts.
Ruben Rodriguez‐Madrid, Jacob Brian Holmes, Lyndon Emsley   +2 more
wiley   +2 more sources

Sticky information Phillips curves: European evidence [PDF]

We estimate the sticky information Phillips curve model of Mankiw and Reis (2002) using survey expectations of professional forecasters from four major European economies.
Dovern, Jonas, Döpke, Jörg, Fritsche, Ulrich, Slacalek, Jiri   +3 more
core  

Evolution of Crematogaster sordidula (Hymenoptera, Formicidae) Ants in the Mediterranean Region During Plio‐Pleistocene Climatic Changes

Zoologica Scripta, EarlyView.
ABSTRACT Understanding insect responses to global climate change involves identifying strategies used during past climate oscillations. Phylogeography offers a powerful framework to unravel how historical climatic and geological events have shaped the spatial genetic patterns of species, providing critical insights into evolutionary processes, whereas ...
Jody H. Voges, Sebastian Salata, Lech Borowiec, Jelena Bujan, Christos Georgiadis, Celal Karaman, Kadri Kiran, Albena Lapeva‐Gjonova, Claude Lebas, Mattia Menchetti, Enrico Schifani, Ahmed Taheri, Bonnie B. Blaimer   +12 more
wiley   +1 more source

تقييم استجابة بعض طرز الشعير (Hordeum vulgare L.) تحت ظروف الإجهاد الملحي في الليزيميترات

مجلة جامعة دمشق للعلوم الزراعية, 2022
نُفذت التجربة في البيت الزجاجي التابع لمركز المكافحة الحيوية  في كلية الزراعة بجامعة دمشق، خلال الموسم الزراعي 2019- 2020، بهدف تقييم استجابة ستة طرز وراثية من الشعير ( H17، H9، H20، عربي أسود، فرات6، فرات7) لتحمل الإجهاد الملحي في الليزيمترات اعتمادا ...
ديمن طاهر
doaj