Results 31 to 40 of about 216,371 (241)

Accurate lithofacies identification in deep shale gas reservoirs via an optimized neural network recognition model, Qiongzhusi Formation, southern Sichuan

Scientific Reports
The Lower Cambrian Qiongzhusi Formation is crucial for exploring deep shale gas in Sichuan, however, challenges in accurately classifying shale lithofacies have hindered its commercialization.
Liang Xiong, Xiaoxia Dong, Tong Wang, Shaoke Feng, Limin Wei, Hua Zhou, Sicong Luo   +6 more
doaj   +1 more source

SOME SPECIFIC FEATURES OF MARGINAL WELLS COMPLETION

Известия высших учебных заведений: Нефть и газ, 2015
The article presents the generalized experience of marginal oil wells completion. A technology was developed which allows maintaining the stability of the drilled borehole walls stability at the expense of capillary imbibition of the productive stratum ...
O. V. Gagarina, Yu. V. Vaganov, A. K. Yagafarov, E. N. Kozlov   +3 more
doaj   +1 more source

De novo synthesis of short‐chain aldehydes and hydrocarbons secreted by the brown marmorated stink bug Halyomorpha halys

FEBS Open Bio, EarlyView.
The brown marmorated stink bug, Halyomorpha halys, mainly secretes 4‐oxo‐(E)‐2‐hexenal, (E)‐2‐decenal, dodecane and tridecane, a mixture representative of that released by many heteropterans. We demonstrated that H. halys can synthesise these secretory components de novo using dietary glucose.
Haruna Fujimori, Koji Noge
wiley   +1 more source

EFFICIENCY ASSESSMENT OF GAS MAIN PIPELINE GEOTECHNICAL MONITORING BY QUALITY OF PRODUCED DATA

Известия высших учебных заведений: Нефть и газ, 2015
Geotechnical monitoring results analysis of gas main pipeline’s lineal part accomplished based on JSC «Gaz-prom» data of 2011-2013 yr. Line damages classification and its evolution dynamic assessment are made taking into account reconstruction operations
Z. Sh. Aleskerova, S. A. Pulnikov, Yu. S. Sysoev, N. V. Kazakova   +3 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

Advanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies, Daniel E. Driemeyer, Aaron P. Stebner   +2 more
wiley   +1 more source

Ecological condition of marine waters in the area of dredging operations of the kashagan field, Kazakhstan

Юг России: экология, развитие
To determine the hydrophysical and hydrochemical parameters of sea water and their changes during dredging works in the north‐eastern part of the Caspian Sea along the Western Approach Route and near/inside block D, islands EPC‐2, EPC‐3, EPC‐4 and island
A. Sh. Kanbetov, D. K. Kulbatyrov, O. Sh. Tulegenova, Y. G. Gilazhov, A. K. Shakhmanova, А. A. Abilgaziyeva   +5 more
doaj   +1 more source

Spatial Characteristics and Genesis of Tight Clastic Reservoirs in Yingcheng Formation of Changling Fault Depression in the Southern Songliao Basin

Geofluids, 2022
Tight oil and gas has become a hot spot for unconventional oil and gas exploration. How to find high-quality reservoirs under the conditions of low porosity and permeability has become a key issue restricting tight oil and gas exploration.
Hansheng Mu, Ruilei Li, Jianfeng Zhu, Wen Xu, Xiyu Qu   +4 more
doaj   +1 more source

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

Extrusion‐Based Additive Manufacturing of Advanced Ceramics: Strengthening Mechanisms and Process Optimization Review

Advanced Engineering Materials, EarlyView.
This review comprehensively evaluates extrusion‐based additive manufacturing for advanced ceramics, detailing feedstock options and key process parameters. By critically addressing defect mechanisms like porosity and cracking, the work highlights optimization strategies through machine learning and advanced postprocessing.
Meisam Bakhtiari, Mohammad Hadi Sheikh‐Ansari, Avinash Borgaonkar, Mehran Dadkhah, Abdollah Saboori   +4 more
wiley   +1 more source