Results 251 to 260 of about 660,505 (314)
Advanced Functional Materials, EarlyView.We present a tissue‐stimulator platform for seamless electrode integration with pancreatic tissue, applying uniform electrical stimulation through optimized design with biohybrid 3D printing. Advantageous effects of electrical stimulation on β‐cell function were observed, including enhanced calcium signaling, islet morphology, and maturation.
Jihwan Kim +7 more
wiley +1 more source
Advanced Functional Materials, EarlyView.A fully transparent, all‐metal‐oxide neuromorphic transistor using a sodium‐embedded alumina (SEA) electrolyte is demonstrated. By precisely tuning the thermal annealing process, the chemical composition of the SEA layer is controlled, allowing for the deterministic realization of both short‐term and long‐term synaptic plasticity within the same device
Yonghyun Albert Kwon +7 more
wiley +1 more source
Advanced Functional Materials, EarlyView.Flexible piezoresistive pressure sensors underpin wearable and soft electronics. This review links sensing physics, including contact resistance modulation, quantum tunneling and percolation, to unified materials/structure design. We highlight composite and graded architectures, interfacial/porous engineering, and microstructured 3D conductive networks
Feng Luo +2 more
wiley +1 more source
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A miniature gas-pressure valve
Medical & Biological Engineering, 1973A thin, small, nonbleeding gas-pressure valve has been specially developed for prosthetic applications. With the introduction of a special membrane design, the difficulties in the miniaturisation of pressure valves could be overcome.
J C, Cool, P V, Pistecký
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ABANDONMENT PRESSURE OF GAS WELLS
Proceedings of Petroleum Economics and Valuation Symposium, 19621962 Economics and Valuation Symposium, Dallas, March 15–16, 1962 When I accepted the invitation to talk on abandonment pressures of natural gas fields I thought the task would be that of consulting various easily-found records, abstracting such data as I thought to bear on the subject, presenting it along with a few apposite ...
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High-pressure gas as a dielectric
Electrical Engineering, 1941Impulse and 60-cycle breakdown strength of sphere gaps, rod gaps, and of samples built up of solid and fluid dielectrics are reported. The tests were made in nitrogen up to 200 pounds per square inch gauge pressure and in Freon up to 70 pounds per square inch gauge pressure. Dielectric strength values were compared with the breakdown of transformer oil
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Electrical Engineering, 1939
DURING the past several years the company with which the writer is associated has been conducting an extensive research and engineering study of the possibilities of high-voltage cable utilizing gas as a pressure medium. The purpose has been to develop a practical cable system of this type and determine its best field of usefulness from an engineering ...
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DURING the past several years the company with which the writer is associated has been conducting an extensive research and engineering study of the possibilities of high-voltage cable utilizing gas as a pressure medium. The purpose has been to develop a practical cable system of this type and determine its best field of usefulness from an engineering ...
openaire +1 more source
A Pressure Regulator for Proportional Regulation of Two Gas Pressures
IEEE Transactions on Biomedical Engineering, 1978A pressure regulator which maintains a constant ratio of pressures at two gas outlets is described. The device consists of three chambers, a central reference chamber; and two side chambers, each one separated from the central one by a double diaphragm. The two double diaphragms are connected to two valves that control the respective gas flows into the
J S, Lundsgaard +2 more
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Gas-pressure and pressure-stratification in the sunspot
Solar Physics, 1969By a curve of growth analysis, using photospheric and umbral equivalent widths, published by Fricke and Elsasser, and absolute oscillator-strengths, it has been found, that the gas pressure in a sunspot is lower than in the corresponding layers of the photosphere.
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Transport in Porous Media, 2018
Changes in gas pressure or external stress cause changes in permeability; furthermore, the severity of stress disturbance in these situations can easily produce plastic yielding in the coal seam. Variations in coal seam permeability are also different between the elastic and plastic zones during the process of gas drainage.
Cun Zhang +4 more
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Changes in gas pressure or external stress cause changes in permeability; furthermore, the severity of stress disturbance in these situations can easily produce plastic yielding in the coal seam. Variations in coal seam permeability are also different between the elastic and plastic zones during the process of gas drainage.
Cun Zhang +4 more
openaire +1 more source