Results 1 to 10 of about 1,971,902 (285)

CONDUCTIVITY AND PERMEABILITY [PDF]

Journal of General Physiology, 1921
An electrical current passing through a living plant flows partly through the cell wall and partly through the protoplasm. The relative amounts of these two portions of the current can be calculated. The outcome of such calculations shows that the conclusions drawn from the study of the resistance of the tissue as a whole apply also to ...
W. J. V. Osterhout
openalex   +4 more sources

Determination of Effective Permittivity and Permeability of Metamaterials from Reflection and Transmission Coefficients [PDF]

, 2002
We analyze the reflection and transmission coefficients calculated from transfer matrix simulations on finite lenghts of electromagnetic metamaterials, to determine the effective permittivity and permeability.
A. M. Nicholson, B. Gralak, C. M. Soukoulis, D. R. Smith, D. R. Smith, D. R. Smith, F. Mariotte, H. Kosaka, J. B. Pendry, J. B. Pendry, J. B. Pendry, M. Notomi, P. Markoš, P. Markoš, P. Markoš, R. A. Shelby, S. Schultz, V. G. Veselago, W. B. Weir   +18 more
core   +2 more sources

Evaluation of temperature resistance of gelatinized modified starch drilling fluid [PDF]

E3S Web of Conferences, 2022
This chapter evaluates and compares the indoor performance of different concentrations of non gelatinized starch and gelatinized starch in drilling fluid, gelatinized modified starch at 80°C, and then aged at high temperature.
Liu Wei, Zhu Mingming, Fan Fan
doaj   +1 more source

Synthesis of organic boron crosslinker for polyvinyl alcohol gel [PDF]

E3S Web of Conferences, 2022
In this article, borax was used as the prime agent, and the organic boron that cross-linked agent was synthesized using adding sodium tartrate. The synthesis response shapes were optimized using unmarried factor way.
Zhang Zhenhuo, Liang Haijun, Wei Xiaolong   +2 more
doaj   +1 more source

Comparison of mechanical characteristics of different types of shales in the Ordos Basin

Frontiers in Earth Science, 2023
Shale gas is a very important unconventional energy. The mechanical properties of the three types of shale (laminated shale, sandwich shale and foliated shale) are different, and the difference in fracturing effectiveness is very significant.
Liangbin Dou, Liangbin Dou, Liangbin Dou, Jingyang Chen, Jingyang Chen, Xiongdi Zuo, Xiongdi Zuo, Yonghui Liu, Lin Sun, Yong Fang, Yong Fang, Xuebin Cheng, Xuebin Cheng, Ting Wang, Ting Wang   +14 more
doaj   +1 more source

Paracellular permeability and tight junction regulation in gut health and disease

Nature reviews: Gastroenterology & hepatology, 2023
Epithelial tight junctions define the paracellular permeability of the intestinal barrier. Molecules can cross the tight junctions via two distinct size-selective and charge-selective paracellular pathways: the pore pathway and the leak pathway.
Arie Horowitz, Sandra D. Chanez-Paredes, Xenia Haest, J. Turner   +3 more
semanticscholar   +1 more source

Mitochondrial Permeability Transition

Cells, 2022
The mitochondrial permeability transition (PT) is a phenomenon that can be broadly defined as an increase in the permeability of the mitochondrial inner membrane [...].
P. Bernardi, Evgeny Pavlov
semanticscholar   +1 more source

Evaluation of Improving Water Flooding Technology by Volume Fracturing of Water Injection Wells in Complex Fractured Reservoirs: A Case Study of Chang 6 Reservoirs in Huaqing Oilfield, Ordos Basin

Geofluids, 2022
Given the problems of multiple natural microfractures developed in Chang 6 reservoir of Huaqing oilfield in Ordos Basin, the injected water flows along with the natural fractures during water injection development, resulting in low water drive recovery ...
Shengping He, Jiaosheng Zhang, Chao Li, Xiqun Tan, Yi Ping, Desheng Li, Jiang Chen   +6 more
doaj   +1 more source

Optimization of direct assessment technology for internal corrosion of gathering and transmission pipelines in Changqing Gas Field

You-qi chuyun, 2021
For the operation mode of the production, gathering and transmission pipelines is diversified in the Changqing Gas Field, and the flow state and corrosion environment vary greatly, there is a large error between the actual detection and the detection ...
Fanghui ZHU, Zhiping ZHOU, Xuehu WU, Qiongwei LI, Mingxing LI, Wei LIU, Shuzhen YU   +6 more
doaj   +1 more source

Characteristics and Controlling Factors of the Chang 8 Oil Reservoir in the Yanchi Area of the Ordos Basin: A Case Study of Well G20

Geofluids, 2022
In the Ordos Basin, the Chang 8 oil reservoir of the Triassic Yanchang Formation is the main target of oil exploration and development and there are many factors affecting the hydrocarbon accumulation.
Xiaozhou Shao, Yong Li, Miaomiao Wang, Meijuan Chu, Yalin Qi, Xiaolei Zhang   +5 more
doaj   +1 more source