Results 61 to 70 of about 20,549 (307)

State-space average modelling of converters with parasitics and storage-time modulation [PDF]

, 1980
The State-Space Averaging approach to modelling switching converter power stages is used to extend the analytical descriptions of the buck, boost, buck-boost, and Cuk converters to included the effects of all parasitic resistances and transistor storage ...
Chetty, P. R. K., Middlebrook, R. D., Polivka, W. M.   +2 more
core   +1 more source

Harmonizing the Pyrene and Ether Groups in Covalent Triazine Polymers for Highly Effective H2O2 Photosynthesis via One‐Step Two‐Electron Oxygen Reduction

Advanced Functional Materials, EarlyView.
The pyrene and ether groups are incorporated into the covalent triazine polymer (CTP) structure. The synergistic effect of the two functional groups endows CTP with better electron transfer, light absorption, and oxygen activation properties. An impressive apparent quantum yield (13.2% @420 nm) and a remarkable solar‐to‐chemical conversion efficiency ...
Chong Wang, Jinliang Lv, Yichun Lu, Hanfeng Ye, Xuan Zhang, Leonardo Cancellara, Nadezda Tarakina, Jiande Lin, Xin Gao, Oleksandr Savateev, Jiajia Cheng   +10 more
wiley   +1 more source

Circuit for clamping bridge overvoltages in voltage-fed quasi-Z-source converter [PDF]

, 2016
Unlike the voltage source converter, the Z-source converter can boost as well as buck the input voltage. However, the presence of physically large components in the impedance network introduces large parasitic inductances into power device commutation ...
Kitson, Joanne, McNeill, J N
core   +2 more sources

Engineering a Sonotherapeutic RBC Membrane‐Derived Nanoparticle Platform for the Treatment of Liver Cancer

Advanced Functional Materials, EarlyView.
Herein, an RBC membrane‐derived nanoparticle (CMN‐ICG) is engineered to efficiently deliver a sonosensitizing agent, indocyanine green (ICG), for sonotherapy of hepatocellular carcinoma (HCC). CMN‐ICG exhibits excellent cytocompatibility, significantly enhances hepatocyte uptake, and produces excessive reactive oxygen species (ROS) upon ultrasound ...
Alap Ali Zahid, Aishik Chakraborty, Wei Luo, Juhi Bora, John Joseph Kelly, John Andrew Ronald, Arghya Paul   +6 more
wiley   +1 more source

A Modified Topology of Two-Switch Buck-Boost Converter

IEEE Access, 2017
Two-switch buck-boost (TSBB) is one of the non-isolated dc-to-dc converters that can change its mode from among buck, boost, and buck-boost modes. Changing its mode is possible by controlling gate signals. This paper presents a novel modified topology of
Byunghee Moon, Hai Young Jung, Sung Hwan Kim, Seok-Hyun Lee   +3 more
doaj   +1 more source

Stability analysis of a non-inverting synchronous buck-boost power converter for a solar power management system [PDF]

[[abstract]]This paper presents the stability analysis of a non-inverting synchronous buck-boost DC/DC power converter for a solar power management system.
Shiau, Jaw-kuen
core   +1 more source

Multivalent Protein Nanorings for Broad and Potent SARS‐CoV‐2 Neutralization

Advanced Healthcare Materials, EarlyView.
A protein‐only, modular multivalent nanoscaffold displaying 20 anchor points, decorated with two different binders (10 of each), targeting the SARS‐CoV‐2 receptor‐binding domain is presented. The construct self‐assembles into stable, biocompatible, homogeneous nanoparticles, exhibit synergistic binding with fM IC50 values. It also detects spike at 9 ng 
Molood Behbahanipour, Carla Goldin, Cecilia Arahi Prato, Ana Luz Paletta, Oriol Bárcenas, Susanna Navarro, Jordi Pujols, Daniel H. Murgida, María Virginia Tribulatti, Sebastián Esperante, Damian Alvarez‐Paggi, Salvador Ventura   +11 more
wiley   +1 more source

Ultra‐Durable Information‐Encoded Anti‐Counterfeiting Self‐Assembled Nanocrystal Labels

Advanced Optical Materials, EarlyView.
Ultra‐durable cost‐effective information‐encoded anti‐counterfeiting labels are fabricated to secure semiconductor chips. A novel method is used to self‐assemble colloidal quantum wells (CQWs) into color bars. Information can be encoded spatially, spectrally, and opto‐spatially.
Taha Haddadifam, Farzan Shabani, Mustafa Kalay, Aisan Khaligh, Evren Mutlugun, Mustafa Serdar Onses, Hilmi Volkan Demir   +6 more
wiley   +1 more source

Arylhydrazines: Convenient Homogeneous Reductants for Scalable Cross‐Coupling

Angewandte Chemie, EarlyView.
Reductive cross‐couplings enable efficient C–C bond formation but are limited by the heterogeneity of Zn or costly reagents like TDAE. We report arylhydrazines as inexpensive, convenient reductants for Ni‐catalyzed sp2–sp3 coupling of aryl halides and secondary alkyl iodides. Mechanistic studies support hydrazine‐mediated NiII reduction for a NiI/NiIII
Nils Kurig, David A. Cagan, Kaid C. Harper, Yu Kawamata, Donna G. Blackmond, Phil S. Baran   +5 more
wiley   +2 more sources

A Wide Input Range Buck-Boost DC–DC Converter Using Hysteresis Triple-Mode Control Technique with Peak Efficiency of 94.8% for RF Energy Harvesting Applications

Energies, 2018
This paper presents a wide range buck-boost direct current to direct current (DC–DC) converter for wireless power transfer (WPT) systems. To implement the wide range DC–DC converter, a Hysteresis triple-mode selector is proposed and designed ...
Truong Thi Kim Nga, Seong-Mun Park, Young-Jun Park, Sang-Hyuk Park, SangYun Kim, Truong Van Cong Thuong, Minjae Lee, Keum Cheol Hwang, Youngoo Yang, Kang-Yoon Lee   +9 more
doaj   +1 more source