Results 31 to 40 of about 8,306,367 (352)

cSi Photovoltaic Modules, Main Degradation Factors Case Study: La Puna (Argentina) [PDF]

open access: yes, 2016
This paper presents an analysis of the power loss of a set of photovoltaic modules exposed for more than fifteen years to solar radiation and other environmental factors. The study covered modules installed in 1989 and concluded with modules installed in
Cadena, Carlos Alberto   +2 more
core   +1 more source

Advances in Two-Phase Cooling for Next Power Electronics Converters

open access: yesIEEE Open Journal of Industry Applications
This article deals with a comprehensive analysis and performance evaluation of a fully integrated two-phase cooling system for power converters. A suitable test bed has been properly manufactured to perform the experimental campaign for the evaluation of
Nicolas E. Lima Baschera   +7 more
doaj   +1 more source

Research on Reflection Power Suppression Method of Solid State Amplifier

open access: yesYuanzineng kexue jishu, 2023
Solid state amplifier (SSA) has been increasingly applicated in accelerators facilities in recent years. However, with the improvement of the power level, equipment failure caused by reflected power becomes the main risk in long-term operation of SSA.
CHEN Shengyi;LI Xiao;ZHU Junyu;ZHANG Chunlin;LONG Wei;LIU Yang;LIU Shenghua;LU Zhijun
doaj  

Base drive for paralleled inverter systems [PDF]

open access: yes, 1980
In a paralleled inverter system, a positive feedback current derived from the total current from all of the modules of the inverter system is applied to the base drive of each of the power transistors of all modules, thereby to provide all modules ...
Nagano, S.
core   +1 more source

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

High Performance Silicon Carbide Power Packaging—Past Trends, Present Practices, and Future Directions

open access: yesEnergies, 2017
This paper presents a vision for the future of 3D packaging and integration of silicon carbide (SiC) power modules. Several major achievements and novel architectures in SiC modules from the past and present have been highlighted. Having considered these
Sayan Seal, Homer Alan Mantooth
doaj   +1 more source

Localization and Detection of Bond Wire Faults in Multichip IGBT Power Modules

open access: yesIEEE transactions on power electronics, 2020
Multichip insulated gate bipolar transistor (mIGBT) power modules (PMs) degrade over power cycling. Bond wire lift–off is one of the major failure modes.
Cuili Chen   +4 more
semanticscholar   +1 more source

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

Degradation effects in sc-Si PV modules subjected to natural and induced ageing after several years of field operation [PDF]

open access: yes, 2012
This paper presents ageing effects observed in sc-Si PV modules operating in field conditions for 18 and over 22 years. The effects of both natural ageing processes and induced ageing by external agents, causing partial or total shading of cells for a ...
Kaplani, E.
core  

Spatiotemporal and quantitative analyses of phosphoinositides – fluorescent probe—and mass spectrometry‐based approaches

open access: yesFEBS Letters, EarlyView.
Fluorescent probes allow dynamic visualization of phosphoinositides in living cells (left), whereas mass spectrometry provides high‐sensitivity, isomer‐resolved quantitation (right). Their synergistic use captures complementary aspects of lipid signaling. This review illustrates how these approaches reveal the spatiotemporal regulation and quantitative
Hiroaki Kajiho   +3 more
wiley   +1 more source

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