Results 61 to 70 of about 7,033 (293)

A 135-190 GHz Broadband Self-Biased Frequency Doubler using Four-Anode Schottky Diodes

Micromachines, 2019
This paper describes the design and demonstration of a 135−190 GHz self-biased broadband frequency doubler based on planar Schottky diodes. Unlike traditional bias schemes, the diodes are biased in resistive mode by a self-bias resistor; thus, no ...
Chengkai Wu, Yong Zhang, Jianhang Cui, Yukun Li, Yuehang Xu, Ruimin Xu   +5 more
doaj   +1 more source

Phase conjugation method and apparatus for an active retrodirective antenna array [PDF]

, 1979
An active retrodirective antenna array wherein a reference array element is used to generate a phase reference which is replicated at succeeding elements of the array.
Chernoff, R. C., Tausworthe, R. C.
core   +1 more source

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

Morphing Switched-Capacitor Converters with Variable Conversion Ratio [PDF]

, 2015
High-voltage-gain and wide-input-range dc-dc converters are widely used in various electronics and industrial products such as portable devices, telecommunication, automotive, and aerospace systems.
Huang, Y, Hui, SYR, Tan, SC, Xiong, S
core   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

FEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura, Shin‐ichi Tate, Kyota Yasuda   +2 more
wiley   +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

Highly Efficient Dual-Band Rectifier Based on Symmetric Impedance Control Network

IEEE Access
This study proposes a dual-band rectifier that utilizes a symmetric impedance control network (SICN) for highly efficient wireless power transfer. The proposed rectifier comprises a voltage doubler and an SICN connected to each diode of the voltage ...
Eojin Kim, Yeonsoo Kim, Juntaek Oh
doaj   +1 more source

A Novel Split-Ring Resonator and Voltage Multiplier based Rectenna Design for 900 MHz Energy Harvesting Applications [PDF]

Radioengineering, 2018
This paper proposes a novel rectenna design for the compact RF energy harvesting system operating at 900 MHz. The rectenna design is based on a probe fed split-ring resonator on an elliptical slotted ground plane and an RF-DC rectifying circuit in the ...
M. Palandoken, C. Gocen, A. Kaya, F. Gunes, C. Baytore, F.C Can   +5 more
doaj  

The ubiquitin ligase RNF115 is required for the clearance of damaged lysosomes

FEBS Letters, EarlyView.
Upon lysosomal rupture, an E3 ubiquitin ligase RNF115 translocates from the cytosol to the damaged lysosomal membrane. Moreover, RNF115 depletion impairs the clearance of damaged lysosomes, identifying it as a key regulator of lysosomal quality control.
Sae Nakanaga, Toshiki Takahashi, Akiko Kuma, Hiroyuki Kawahara   +3 more
wiley   +1 more source

Design and experimental evaluation of a single-stage AC/DC converter with PFC and hybrid full-bridge rectifier

Engineering Science and Technology, an International Journal, 2018
This paper presents design and experimental evaluation of a single-stage AC/DC converter with PFC and hybrid full-bridge rectifier for supplying LED streetlight. The proposed converter consisted of one LLC resonant tank, two boost circuits and one shared
Nor Azura Samsudin, Dahaman Ishak, Ashraf Bani Ahmad   +2 more
doaj   +1 more source