Results 11 to 20 of about 6,268 (166)

Experiment, modelling, mechanism and significance of multiscale and dynamic diffusion-permeability of gas through micro-nano series pores in coal [PDF]

open access: yes, 2023
As one of the hot issues at the frontiers of science in the world, the multi-scale scientific question has occurred in the fields of natural science and engineering.
Jiansong PENG   +3 more
core   +1 more source

Land Use and Land Cover Classifications of Horqin Sandy Land Dune-Meadow Areas [PDF]

open access: yes, 2021
In this study, we determine land use/land cover (LULC) types using only optical remote sensing data in a dune-meadow area of Horqin Sandy Land in northeast China. We used 64 Sentinel-2 remote sensing images from 2018.
Cao, Wenmei   +5 more
core   +2 more sources

Radiative properties of flue gas under high-altitude sub-atmospheric pressure [PDF]

open access: yes
The special geography of the plateau area leads to a series of problems in boiler operation. In this study, the absorption coefficients and total emissivity of flue gas were determined under different air pressures during air combustion using the Line-By-
Defu CHE   +6 more
core   +1 more source

Preliminary study on assimilation of significant wave heights from T/P altimeter [PDF]

open access: yes, 2017
2003-2004 > Academic research: refereed > Publication in refereed journalVersion of ...
Li, CW, Li, YS, Qi, Y, Shi, P, Zhang, Z
core  

Probing metal complex by mass spectrometry [PDF]

open access: yes, 2016
金属配合物由于具有优异的物理和化学性质,如催化、分子识别、手性拆分、C-H活化、荧光和生物医学等,在最近引起了广泛的研究兴趣。金属配合物的各种物理或化学性质与其结构及化学组成密切相关,目前X-射线单晶衍射是金属配合物结构和化学组成的主要表征方法。然而,X射线衍射的方法无法明确分辨电子数相近的原子,且对于金属配合物结构上的某些无序位置,X射线衍射的方法无法准确地确定其化学组成。而质谱是基于质荷比(m/z)表征化合物在溶液状态下的化学成分的分析仪器。与X射线衍射相比 ...
苏海峰
core  

磁场中正柱非线性理论的自洽解 [PDF]

open access: yes, 1985
本文讨论磁场中中等低气压弧光放电与辉光放电的正柱理论。文献[1]是给定放电中间参数后,假定中性气体运动,研究放电现象.本文仍假定中性气体运动,但给出初始放电参数,补充两个积分关系,建立了初始放电参数与中间参数的关系。给出这个问题完整的数学提法。用数值方法求解。文献[1]相当于第一次迭代。结果表明 ...
唐福林, 徐复, 陈乐山
core  

Review of the mechanisms of climatic elements on sleep quality [PDF]

open access: yes
Sleep is a basic need for human life-sustaining activities, and sleep quality is closely related to human health. With the rapid changes in the global climate, an increasing number of studies have found that climate change has an important impact on ...
WANG Jiaxin, ZHANG Xin, HU Linlin
core   +1 more source

An Asymmetric Sandwich‐Structured Hydrogel Enables High‐Output Stable Moist–Electric Generation and Self‐Powered Sensing

open access: yesRare Metals, Volume 45, Issue 4, April 2026.
ABSTRACT Moisture‐enabled electricity generation technology offers a new paradigm for sustainable energy harvesting, but its practical applications are still limited by issues such as low output power and insufficient long‐term stability. In this paper, an asymmetric sandwich‐structured hydrogel moist–electric generator (SSHMEG) with an ion ...
Peng Chen   +7 more
wiley   +1 more source

等离子体加工过程中尘埃微粒行为的研究 [PDF]

open access: yes, 1997
综述低气压等离子体加工过程中关于尘埃微粒的形成及生长过程、带电机制、作用力、输运特性及尘埃等离子体的强耦合性质等方面的研究进展,并介绍其主要测量手段 ...
顾琅
core  

Boosting Piezoelectric Voltage Constant in 3D‐Interconnected PZNNT Porous Piezoceramics via Pore Architecture Engineering

open access: yesRare Metals, Volume 45, Issue 3, March 2026.
ABSTRACT In conventional piezoceramics, the coordinated change between the dielectric constant (εr) and the piezoelectric charge constant (d33) usually limits the piezoelectric voltage constant g33 (g33 = d33/εr), a critical figure of merit for piezoelectric sensors.
Xiaoying Feng   +7 more
wiley   +1 more source

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