Results 51 to 60 of about 272,354 (239)

EU Peatlands: Current Carbon Stocks and Trace Gas Fluxes [PDF]

open access: yes, 2004
Peatlands in Europe has formed a significant sink for atmospheric CO2 since the last glacial maximum. Currently they are estimated to hold ca. 42 Gt carbon in the form of peat and are therefore a considerable component in the European carbon budget.
Byrne, K.   +13 more
core   +1 more source

Preferential Paths of Air-water Two-phase Flow in Porous Structures with Special Consideration of Channel Thickness Effects. [PDF]

open access: yes, 2019
Accurate understanding and predicting the flow paths of immiscible two-phase flow in rocky porous structures are of critical importance for the evaluation of oil or gas recovery and prediction of rock slides caused by gas-liquid flow.
A Ferrari   +48 more
core   +2 more sources

Charge Transport in Ternary Charge‐Transfer Solid Solution Single Crystals

open access: yesAdvanced Functional Materials, EarlyView.
This study deconvolutes the roles of indirect (superexchange) and direct electronic coupling on charge transport in single crystals of an organic charge‐transfer molecular semiconductor (OSC). This model system elegantly demonstrates that structural defects introduced by chemical dopants play a significant role in the electronic performance ...
Jonathan C. Novak   +7 more
wiley   +1 more source

Application of gas ultrasonic flowmeter in gas drainage and air pressure in coal mine

open access: yesMeikuang Anquan, 2021
The main advantages and disadvantages of orifice flowmeter, V-cone flowmeter, precession vortex flowmeter and vortex street flowmeter are analyzed; the working principle of gas ultrasonic flowmeter in gas drainage pipeline is introduced, and the ...
FENG Chao, ZHU Yanjun
doaj   +1 more source

Upper Sioux Indian Community Trip Report: Assessment of Mold and Moisture Conditions [PDF]

open access: yes, 2004
Paul Francisco from the Building Research Council (BRC) at the University of Illinois Urbana-Champaign and Robert Nemeth from Magna Systems, Inc. conducted a site visit at the Upper Sioux Indian Community Housing Department (USICHD) on April21-23, 2004 ...
Francisco, Paul, Nemeth, Robert
core  

Reduced methane emissions from large-scale changes in water management of China’s rice paddies during 1980-2000 [PDF]

open access: yes, 2002
Decreased methane emissions from paddy rice may have contributed to the decline in the rate of increase of global atmospheric methane (CH4) concentration over the last 20 years. In China, midseason paddy drainage, which reduces growing season CH4 fluxes,
Boles, Stephen   +8 more
core   +2 more sources

Asymmetric Contact Engineering for Bottleneck‐Free Transport in 2D MoS2 Field‐Effect Transistor

open access: yesAdvanced Functional Materials, EarlyView.
Performance of 2D semiconductor transistors is limited by carrier transport bottlenecks arising from specific device geometries. By identifying this structural limitation, a bottleneck‐free asymmetric transistor architecture (BATA) is introduced to improve carrier transport.
Jinhyeok Pyo   +10 more
wiley   +1 more source

Unraveling Quantitative Sensing Mechanism and Predictive Molecular Metrics for High‐Performance OFET Amine Sensors

open access: yesAdvanced Functional Materials, EarlyView.
This study introduces a novel chloro boron subphthalocyanine/polymer blend OFET sensor achieving 0.005 ppb limit of detection for ammonia at room temperature and high selectivity against similar amines. An original theoretical framework is proposed to describe the sensing mechanism, relating analyte molecular volume and Lewis basicity to sensor ...
Kavinraaj Ella Elangovan   +6 more
wiley   +1 more source

High-efficient drainage technology of shale gas reservoirs with normal pressure in Pengshui Block

open access: yesYouqicang pingjia yu kaifa, 2020
The shale gas reservoirs in Pengshui Block belong to the normal pressure system, where the spontaneous production fails after hydraulic fracturing. This is due to the relative low energy and productivity of the reservoirs, hence it is necessary to deploy
DUAN Chenglian   +5 more
doaj  

A suitable parametrization to simulate slug flows with the Volume-Of-Fluid method [PDF]

open access: yes, 2012
Diffuse–interface methods, such as the Volume-Of-Fluid method, are often used to simulate complex multiphase flows even if they require significant computation time.
Augier, Frédéric   +3 more
core   +4 more sources

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