Results 21 to 30 of about 3,524,370 (135)

Feasibility of high-helium natural gas exploration in the Presinian strata, Sichuan Basin

open access: yesNatural Gas Industry B, 2015
Helium in China highly depends on import at present, so the most practical way to change the situation is searching for medium-to-large natural gas fields with high helium content.
Jian Zhang   +6 more
doaj   +1 more source

A potential solution to GMAW gas flow optimisation [PDF]

open access: yes, 2012
A number of self-regulating shielding gas valves have been developed to synchronise the shielding gas flow rate to the welding current being used in the gas metal arc welding process (GMAW).
Campbell, Stuart   +3 more
core   +3 more sources

Lithofacies types and assemblage features of continental shale strata and their implications for shale gas exploration: A case study of the Middle and Lower Jurassic strata in the Sichuan Basin

open access: yesNatural Gas Industry B, 2020
Fine identification and division of lithofacies types of continental shale strata is an important basis for the evaluation of shale gas exploration and development potential.
Zhongbao Liu   +7 more
doaj   +1 more source

Microfluidic Nano‐Assembly of Red‐Blood‐Cell (RBC) Lipids and Components for Engineering Extracellular Vesicles

open access: yesAdvanced Healthcare Materials, EarlyView.
Engineered red blood cell‐derived extracellular vesicles (eRBCEVs) are synthesized via controlled microfluidic assembly from native RBC lipids, enabling tunable encapsulation of proteins, nucleic acids, nanoparticles, and viral vectors. The platform demonstrates reproducible nanoscale architecture, preserved membrane composition, and functional cargo ...
Chiranth K. Nagaraj   +23 more
wiley   +1 more source

Geological conditions and enrichment patterns of helium reservoir in Yancheng Formation, Huangqiao area, Subei Basin

open access: yesShiyou shiyan dizhi
The helium (He) content in the natural gas of the Neogene Yancheng Formation in the Huangqiao area of Subei Basin ranges from 1.05% to 1.40%, which is generally higher than the industrial grade, indicating a crust and mantle composite type of helium ...
Hongsheng YAO, Xingming CHEN, Tao ZHOU
doaj   +1 more source

Main characteristics and effectiveness analysis of potential helium source rocks in crust-source helium-rich natural gas reservoirs

open access: yesJournal of Natural Gas Geoscience
The evaluation of potential helium source rocks’ effectiveness is a core issue in the field of helium resource exploration and development. However, previous studies predominantly rely on uranium (U) and thorium (T) contents and the age of the rock for evaluating the effectiveness of potential helium source rocks, which fails to fully characterize the ...
Dong Zhao   +4 more
openaire   +2 more sources

Scalable Crackle‐Lithography for Multifunctional Enclosed Plastic Nanofluidic Devices

open access: yesAdvanced Science, EarlyView.
Crackle‐lithography enables scalable fabrication of enclosed plastic‐substrate‐based nanofluidic devices with interconnected nanochannels that enable molecular transport, optical interrogation, confined electroless copper deposition, and ionic memristive behavior.
Tirumala Rao Dumpala   +8 more
wiley   +1 more source

Analysis of main controlling factors and accumulation model of helium in Longdong area, Ordos Basin

open access: yesYouqi dizhi yu caishoulu
Deep exploration in the Ordos Basin in recent years has revealed that tight sandstone gas reservoirs possess considerable potential for helium resources. Helium and natural gas are derived from distinct source rocks.
KANG Rui   +6 more
doaj   +1 more source

Origin and migration model of natural gas in L gas field, eastern slope of Yinggehai Sag, China

open access: yesPetroleum Exploration and Development, 2019
Based on the chemical and stable carbon isotopic composition of natural gas and light hydrocarbons, along with regional geological data, the genetic type, origin and migration of natural gases in the L lithologic gas field, the eastern slope of Yinggehai
Jihai YANG, Baojia HUANG
doaj   +1 more source

Investigations of the Evolved Molecular Basis for Terpenoid Biosynthesis in Marine Sponges

open access: yesAdvanced Science, EarlyView.
Confirming and extending a previous observation in another Bubarida sponge, genomic and functional analyses of A. cavernosa reveal that sponges retain the mevalonate pathway and employ single α‐domain T1TSs and UbiA‐type TSs for terpenoid biosynthesis. The absence of T1TSs clustering with other biosynthetic genes tentatively suggests, based on limited ...
Fangyan Chen   +6 more
wiley   +1 more source

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