Results 121 to 130 of about 13,456 (303)
Advanced Science, EarlyView.A high‐power hybrid nanogenerator (HP‐HNG) with multi‐degree‐of‐freedom mechanical coupling is reported, integrating multi‐directional wave energy for output to achieve 1 + 1 > 2 energy harvesting. The HP‐HNG achieves a peak output power of 0.764 W, corresponding to a peak power density of 127.303 W m−3. At a wave frequency of 1 Hz, the HP‐HNG delivers
Shuai Ding +9 more
wiley +1 more source
Can dwarf novae produce type Ia supernovae?
Astronomy & AstrophysicsContext. Accreting white dwarfs (WDs) are considered some of the most promising progenitor candidates of type Ia supernovae (SNe Ia). Dwarf novae (DNe), a subclass of cataclysmic variables, consist of a CO WD accretor and a low-mass donor star, which can
Li R., Wu C., Dai Z., Wang B.
doaj +1 more source
Palmae novae columbianae [PDF]
PALMAE NOVAE COLUMBIANAE Palmae novae columbianae ( - ) Cover ( - ) Text (665) Abb.: Tafel III ([1]
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Bidirectional Soft Catalysts for Improved Power Performance of Li‐S Batteries
Advanced Science, EarlyView.A soft polymer‐metal catalyst is integrated into the binder to create a catalytically active microenvironment that accelerates bidirectional sulfur redox kinetics in lithium‐sulfur batteries. A model polyvinyl alcohol‐Cu catalyst enables high areal capacities at demanding current densities and stable cycling in pouch‐cell prototypes at 0.5 C, achieving
Maleesha M. Nishshanke +7 more
wiley +1 more source
Balmer decrements as a new diagnostic for period-bounce cataclysmic variable stars
Astronomy & AstrophysicsContext. Cataclysmic variable stars (CVs) evolve towards shorter orbital periods (Porb) until they reach a minimum Porb of ∼80 min. Beyond this point, the donor star becomes out of thermal equilibrium or increasingly degenerate, causing the system to ...
Hernández-Díaz Santiago +2 more
doaj +1 more source
Magnetic Water Cleaning of Estrogens via Tight yet Dynamic Binding to Nanoparticles
Advanced Science, EarlyView.Micropollution is one of the big challenges humanity faces with estrogen hormones being emerging pollutants of concern. Here, a supramolecular design strategy is presented that generates a simple nano‐adsorbent material to magnetically remove low‐concentrated estrogens from water.
Lukas Müller +25 more
wiley +1 more source
Novas tecnologias, novas sensibilidades
Comunicação & Educação, 2000 O artigo discute as mudanças na cultura contemporânea, advindas do processo de globalização, e como essas mudanças têm suscitado a discussão sobre as crises de identidade, principalmente aquelas calcadas no Estado nacional, evidenciando novas formas de se vivenciar a identidade de pertencimento a um território. Isso se dá ao mesmo tempo em que as novas
openaire +4 more sources
, 1985 Andrillat Yvette. Les novae. In: Diplômées, n°133, 1985. pp.
Andrillat, Yvette
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From Sensing Mechanisms to System Co‐Design: Graphene‐Based Sensors and Readout Circuits
Advanced Science, EarlyView.This review establishes a unified PS–EQ–RF framework linking graphene sensing mechanisms, native electrical outputs, and output‐specific readout circuits. Voltage‐, current‐, resistance‐, and capacitance‐type sensing systems are systematically classified to guide architecture selection, low‐noise design, system co‐design, and practical integration ...
Jinduo Zhang +5 more
wiley +1 more source
Neon Novae, Recurrent Novae, and Type I Supernovae [PDF]
, 1989 Over the past few years, we have been investigating the effects of accretion onto massive white dwarfs and its implications for their growth in mass toward the Chandrasekhar limit, in attempts to identify a possible relationship between SN I and novae ...
Technion-Israel Institute of Technology, Haifa (Israel) +5 more
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