Results 51 to 60 of about 13,458,796 (341)
Review of Conductive Reciprocating Liquid Metal Magnetohydrodynamic Generators
EnergiesReciprocating liquid metal magnetohydrodynamic (MHD) power generation is a new MHD power generation method in which the working fluid is a single-phase liquid metal with a low melting point and high conductivity.
Lingzhi Zhao, Aiwu Peng
doaj +1 more source
Mathematics, 2021 In this paper, a finite time thermodynamic model of high temperature proton exchange membrane fuel cell (HT-PEMFC) is established, in which the irreversible losses of polarization and leakage current during the cell operation are considered.
Bing Xu +4 more
doaj +1 more source
The cosmological gravitational wave background from primordial density perturbations [PDF]
, 2006 We discuss the gravitational wave background generated by primordial density perturbations evolving during the radiation era. At second-order in a perturbative expansion, density fluctuations produce gravitational waves. We calculate the power spectra of
A. A. Starobinskii +4 more
core +4 more sources
The newfound relationship between extrachromosomal DNAs and excised signal circles
FEBS Letters, EarlyView.Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley +1 more source
EnergiesWave energy is a highly concentrated energy resource with five times higher energy density than wind and at least ten times the power density of solar energy.
Lingzhi Zhao, Aiwu Peng
doaj +1 more source
Nanomaterials, 2021 A low-voltage biomass matrix and flexible electric-heating composite with graphene oxide (GO) and cationic cellulose nanofiber (CCNF) were fabricated by ultrasonic dispersion and suction filtration.
Shanqing Liang, Huicong Wang, Xin Tao
doaj +1 more source
FEBS Letters, EarlyView.We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee +3 more
wiley +1 more source
EnergiesWith the evolution of hydroelectric generators toward larger capacity and higher rotational speeds, the significa++nt increase in power density has rendered rotor cooling technology a critical bottleneck restricting performance enhancement.
Ruiwei Li, Lin Ruan
doaj +1 more source
Characteristics of Hydraulic and Electric Servo Motors
Actuators, 2022 Until the 1970s, hydraulic actuators were widely used in many mechanical systems; however, recently, electric motors have become mainstream by virtue of their improved performance, and hydraulic motors have largely been replaced by electric motors in ...
Sayako Sakama +2 more
doaj +1 more source
ACS Nano, 2019 Wave energy is one of the most available energy sources in oceans. In this work, a design of high power density triboelectric nanogenerator (TENG) based on a tower structure is proposed for harvesting wave energy from arbitrary directions.
Minyi Xu +6 more
semanticscholar +1 more source