Results 121 to 130 of about 467,081 (295)

Postflight hardware evaluation 360T025 (RSRM-25, STS-46). Appendix A: Insulation PFORs [PDF]

The final Postflight Hardware Evaluation Report 360T025, Appendix A is presented. Insulation Postflight Observation Records (PFOR's) are provided. Postfire insulation, nozzle insert throat diameter measurements, segment internal insulation condition, and

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Mixture of CO2-N2 as a potential to SF6 insulation gas: an overview [PDF]

, 2020
Each equipment in the high voltage (HV) system must retain an appropriate electrical insulation for protection and to avoid any of leakage current [1]. Thus, the choice of insulation material is essential. There are three types of insulation medium which
., Muhammad Saufi, ., Noor Mazliza, ., Noor Zahirah, Abd-Rahman, Rahisham, Baharom, Md Nor Ramdon   +4 more
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Trap‐Modified Inverted Organic Photodetectors via Layer‐by‐Layer Processing with Poly(N‐vinylcarbazole) Additives

Advanced Functional Materials, EarlyView.
Trap state engineering in inverted organic photodetectors (OPDs) is achieved via combined layer‐by‐layer (LbL) processing and poly(N‐vinylcarbazole) (PVK) incorporation. LbL reduces the trap density while PVK additives gradually shift trap states from shallow band‐edge to deep mid‐gap levels, tailoring the energy distribution.
Jingwei Yi, Yi Yang, Yusen Pei, Apurva Gadikar, Vahid Mahdikhah, Myratgeldi Kotyrov, Seung Hyun Kim, Kenan Gundogdu, Wei You, Harald Ade, Franky So   +10 more
wiley   +1 more source

3D Simulation of Partial Discharge in High Voltage Power Networks [PDF]

, 2019
Open accessPartial discharge (PD) events arise inside power cables due to defects of cable’s insulation material, characterized by a lower electrical breakdown strength than the surrounding dielectric material.
Duffy, A. P., Ragusa, Antonella, Sasse, Hugh G.   +2 more
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Melt Grafting of Geometry‐Tailored Voltage Stabilizers for High‐Performance Polypropylene Insulation

Advanced Functional Materials, EarlyView.
A scalable one‐step melt grafting strategy is developed to enhance the dielectric properties of isotactic polypropylene by covalently incorporating thermally stable aromatic voltage stabilizers. This solvent‐free approach improves volume resistivity and DC breakdown strength through deep trap formation and charge localization, offering a sustainable ...
Nazirul Mubin bin Normansah, Taehoon Kwon, Hana Kim, Shin‐Ki Hong, Seung Won Lee, Se Hee Lee, Ik‐Su Kwon, Masahiro Kozako, Minhee Kim, Seunggun Yu   +9 more
wiley   +1 more source

Violet Phosphorene Nanosheets Induced the Death of Ovarian Cancer Cells by Modulating the Vitamin B6 Pathway

Molecules
Cancer remains a significant global public health concern. Numerous challenges still remain in its treatment. Recently, a novel two-dimensional material—violet phosphorene nanosheets (VPNS)—has shown considerable application potential in the biomedical ...
Xinyi Zhao, Yujing Xu, Zhengyi Liu, Shiling Dai, Miao Qi, Huaiyan Zhang, Jinying Zhang, Dehui Xu   +7 more
doaj   +1 more source

Design and evaluation of thin metal surface insulation for hypersonic flight [PDF]

An all-metal insulation was studied as a thermal protection system for hypersonic vehicles. Key program goals included fabricating the insulation in thin packages which are optimized for high temperature insulation of an actively cooled aluminum ...
Miller, R. C., Petach, A. M.
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A MEMS electrostatic particle transportation system [PDF]

, 1998
We demonstrate here an electrostatic MEMS system capable of transporting particles 5-10μm in diameter in air. This system consists of 3-phase electrode arrays covered by insulators (Figs. 1, 2).
Desai, A., Lee, S. W., Tai, Y. C.
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Multilayer Soft Photonic Arrays Inspired by Cephalopod Skin for High‐Density, Independent, and Multimodal Actuation

Advanced Functional Materials, EarlyView.
A vertically stacked, DEA‐driven photonic array inspired by cephalopod skin, featuring highly crystalline colloidal crystal gels with vivid color, low FWHM and scalability is presented. The multilayer design removes lateral pixel interference, achieving near‐100% fill factor with fully independent RGB actuation.
Maga Kim, Imbo Kong, Do Yoon Kim, Jaeyoung Choi, Seong‐Yu Choi, Yun Hyeok Lee, Sihwan Lee, Byung Ik Park, Gimin Sung, In‐Suk Choi, Wook Sung Kim, Jeong‐Yun Sun   +11 more
wiley   +1 more source

Intelligent Mechanical Fault Diagnosis Method for High-Voltage Circuit Breakers Based on Grey Wolf Optimization and Multi-Grained Cascade Forest Algorithms

Applied Sciences
High-voltage circuit breakers (HVCBs) handle the important tasks of controlling and safeguarding electricity networks. In the case of insufficient data samples, improving the accuracy of the traditional HVCB mechanical fault diagnosis method is difficult,
Zhuofan Xu, Jing Yan, Guoqing Sui, Yanze Wu, Meirong Qi, Zilong Zhang, Yingsan Geng, Jianhua Wang   +7 more
doaj   +1 more source