Results 61 to 70 of about 797,532 (288)

The fading of Cassiopeia A, and improved models for the absolute spectrum of primary radio calibration sources [PDF]

, 2017
Based on five years of observations with the 40-foot telescope at Green Bank Observatory (GBO), Reichart & Stephens (2000) found that the radio source Cassiopeia A had either faded more slowly between the mid-1970s and late 1990s than Baars et al. (1977)
Barlow, B. N., Berger, T. A., Dutton, D. A., Egger, R. E., Foster, A. C., Frank, N. R., Ghigo, F. D., Haislip, J. B., Heatherly, S. A., Kouprianov, V. V., Kumar, N. D., LaCluyzé, A. P., Maples, M. P., Martin, J. R., Moffett, D. A., Moore, J. P., Paggen, M. L., Reichart, D. E., Reichart, J. E., Stanley, J. L., Stýblová, J., Trotter, A. S., White, S.   +22 more
core   +3 more sources

A methionine‐lined active site governs carbocation stabilization and product specificity in a bacterial terpene synthase

FEBS Letters, EarlyView.
This study reveals a unique active site enriched in methionine residues and demonstrates that these residues play a critical role by stabilizing carbocation intermediates through novel sulfur–cation interactions. Structure‐guided mutagenesis further revealed variants with significantly altered product profiles, enhancing pseudopterosin formation. These
Marion Ringel, Carl P. O. Helmer, Shani Zev, Ronja Driller, Emily Buhr, Markus Reinbold, Renana Schwartz, Gabriel Foley, Mikael Boden, Daniel Garbe, Gerhard Schenk, Dan Thomas Major, Bernhard Loll, Thomas Brück   +13 more
wiley   +1 more source

Design and Implementation of LED Driver With Variable Inductor-Controlled Quasi-Resonant Converter

IEEE Access
The resonant tank circuit of quasi-resonant converters, which operate based on the resonant switch concept, provides soft switching by shaping the voltage or current of the switch and conducts energy transfer from input to output.
Salih Nacar, Kenan Unal
doaj   +1 more source

Hyperosmotic stress induces PARP1‐mediated HPF1‐dependent mono(ADP‐ribosyl)ation

FEBS Letters, EarlyView.
Sorbitol‐induced hyperosmotic stress rapidly induces reversible mono(ADP‐ribosyl)ation (MARylation) on PARP1 without the signs of genotoxic signaling. We show that PARP1 autoMARylation is HPF1 dependent and forms hydroxylamine‐resistant O‐glycosidic linkages.
Anna Georgina Kopasz, Mihály Mérey, Rebeka Vásárhelyi, Ramóna Pék, Victor Imburchia, László Henn, Adrián Kószó, Nicholas D. Lakin, Ivan Ahel, Sébastien Huet, Ágnes Czibula, Gyula Timinszky   +11 more
wiley   +1 more source

Microstrip Patch Antenna in WiMAX, ISM and L-band for Sub-6 GHz Application. Review

Приборы и методы измерений
In rapid deployments of next generation wireless communication system, the demand for high speed data, capacity, high reliability, low latency and increased flexibility. Rigorous research in the field of 5G technology. Sub-6 GHz mid-band spectrum fetches
Atul R. Chaudhari, Dipak P. Patil
doaj   +1 more source

A Review of the L-Band Auction [PDF]

In May 2008, Ofcom’s L-band auction concluded. This was Ofcom’s second combinatorial clock auction. The auction used an innovative format intended to encourage an efficient assignment of the 17 lots. Eight bidders competed for the lots. In sharp contrast
Peter Cramton
core  

An isoform of 14‐3‐3 protein regulates transbilayer lipid movement at the plasma membrane

FEBS Letters, EarlyView.
Loss of 14‐3‐3ζ in CHO cells confers resistance to exogenous phosphatidylserine (PS) and impairs endocytosis‐independent inward flip‐flop of fluorescent PS at the plasma membrane. RNAi‐mediated knockdown reproduces this defect, while no additive effect is seen in ATP11C‐deficient cells.
Akiko Yamaji‐Hasegawa, Akira Hattori, Masafumi Tsujimoto, Toshihide Kobayashi   +3 more
wiley   +1 more source

Aboveground Forest Biomass Estimation Combining L- and P-Band SAR Acquisitions

Remote Sensing, 2018
While considerable research has focused on using either L-band or P-band SAR (Synthetic Aperture Radar) on their own for forest biomass retrieval, the use of the two bands simultaneously to improve forest biomass retrieval remains less explored.
Michael Schlund, Malcolm W. J. Davidson
doaj   +1 more source

Multi-frequency fine resolution imaging radar instrumentation and data acquisition [PDF]

Development of a dual polarized L-band radar imaging system to be used in conjunction with the present dual polarized X-band radar is described. The technique used called for heterodyning the transmitted frequency from X-band to L-band and again ...
Champagne, E. B., Ferris, J. E., Liskow, C. L., Marks, J. M., Rendleman, R. A., Salmer, R. J.   +5 more
core   +1 more source

The neural crest‐associated gene ERRFI1 is involved in melanoma progression and resistance toward targeted therapy

Molecular Oncology, EarlyView.
ERRFI1, a neural crest (NC)‐associated gene, was upregulated in melanoma and negatively correlated with the expression of melanocytic differentiation markers and the susceptibility of melanoma cells toward BRAF inhibitors (BRAFi). Knocking down ERRFI1 significantly increased the sensitivity of melanoma cells to BRAFi.
Nina Wang, Qian Sun, Daniel Novak, Lei Zhu, Juliane Poelchen, Tamara Steinfass, Yiman Wang, Viktor Umansky, Jochen Utikal   +8 more
wiley   +1 more source