Results 41 to 50 of about 880,441 (304)

Research on the Rate of Penetration Prediction Method Based on Stacking Ensemble Learning

Geofluids, 2023
ROP is an important index to evaluate the efficiency of oil and gas drilling. In order to accurately predict the ROP of an oilfield in Xinjiang working area, a ROP prediction model based on the historical drilling data of this working area was ...
Yangfeng Ren, Baoping Lu, Shuangjin Zheng, Kai Bai, Lin Cheng, Hao Yan, Gan Wang   +6 more
doaj   +1 more source

Genetic Types, Distribution Patterns and Enrichment Mechanisms of Helium in China’s Petroliferous Basins

Frontiers in Earth Science, 2022
Helium is a strategic resource with many scientific, technical and industrial applications. However, despite its importance and scarcity, there is a lack of understanding on its origin, migration and accumulation processes.
Shengfei Qin, Dan Xu, Jiyuan Li, Zheng Zhou   +3 more
doaj   +1 more source

Distribution characteristics and enrichment mechanism of TDS geothermal water in Xining Basin

地质科技通报, 2022
The high concentration of TDS in most of the geothermal water in Xining Basin greatly restricted the availability of geothermal water.In order to provide reference value for the later development and utilization of geothermal resources, the enrichment ...
Hongli Sun, Guiling Wang, Wenjing Lin
doaj   +1 more source

The Supernova Relic Neutrino Background

, 2000
An upper bound to the supernova relic neutrino background from all past Type II supernovae is obtained using observations of the Universal metal enrichment history.
A. Dar, A.J. Connolly, B.J. Boyle, D.H. Hartmann, D.H. Hughes, G. Steigman, G.A. Tammann, G.S. Bisnovatyi-Kogan, H.-T. Janka, J. Gallego, K. Hirata, K. Kubodera, L.M. Krauss, M. Kaplinghat, M. Pettini, P. Madau, P. Vogel, P.O. Lapage, R.A. Malaney, S.E. Woosley, S.E. Woosley, S.J. Lilly, S.M. Pascarelle, T. P. Walker, T. Totani, T. Totani, T. Totani, T.K. Gaisser, W. Zhang, W.D. Arnett, Y. Totsuka, Y.C. Pei   +31 more
core   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

FEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

Massive dolomitization driven by MgSO-rich seawater and its effects on thermochemical sulfate reduction, Upper Permian Changxing Formation, northeastern Sichuan, China

Energy Exploration & Exploitation, 2022
Massive dolostones replacing build-ups and containing H2S of thermochemical sulfate reduction (TSR) origin occur in the Upper Permian reef and bank deposits, northeastern Sichuan, China, despite the absence of gypsum or anhydrite deposits, which are ...
Kaikai Li, Chunfang Cai, Xianfeng Tan, Hua Jiang, Junjia Fan   +4 more
doaj   +1 more source

Potassium: a new actor on the globular cluster chemical evolution stage. The case of NGC 2808 [PDF]

, 2015
We derive [K/Fe] abundance ratios for 119 stars in the globular cluster NGC 2808, all of them having O, Na, Mg and Al abundances homogeneously measured in previous works. We detect an intrinsic star-to-star spread in the Potassium abundance.
Bellazzini, M., Dalessandro, E., Ibata, R., Merle, T., Mucciarelli, A., Plez, B.   +5 more
core   +4 more sources

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

FEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho, Shin Morioka, Junko Sasaki, Takehiko Sasaki   +3 more
wiley   +1 more source

Phosphatidylinositol 4‐kinase as a target of pathogens—friend or foe?

FEBS Letters, EarlyView.
This graphical summary illustrates the roles of phosphatidylinositol 4‐kinases (PI4Ks). PI4Ks regulate key cellular processes and can be hijacked by pathogens, such as viruses, bacteria and parasites, to support their intracellular replication. Their dual role as essential host enzymes and pathogen cofactors makes them promising drug targets.
Ana C. Mendes, Guilherme M. Azevedo, Amanda P. Barcellos, Diana Bahia   +3 more
wiley   +1 more source

Evaluation of Favorable Fracture Area of Deep Coal Reservoirs Using a Combination of Field Joint Observation and Paleostress Numerical Simulation: A Case Study in the Linxing Area

Energies
The development of fractures under multiple geological tectonic movements affects the occurrence and efficient production of free gas in deep coal reservoirs.
Shihu Zhao, Yanbin Wang, Yali Liu, Zengqin Liu, Xiang Wu, Xinjun Chen, Jiaqi Zhang   +6 more
doaj   +1 more source