Results 81 to 90 of about 32,600 (279)

Results from the Harmoni Laser Guide Star wavefront sensor prototype

, 2023
International audienceResults from the Harmoni Laser Guide Star wavefront sensor ...
Jouve, Pierre, Dohlen, Kjetil, Costille, Anne, Rouquette, Paul, Fusco, Thierry, Neichel, Benoit, Pedreros Bustos, Felipe   +6 more
core   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Motion Blurred Star Image Restoration Based on MEMS Gyroscope Aid and Blur Kernel Correction

Sensors, 2018
Under dynamic conditions, motion blur is introduced to star images obtained by a star sensor. Motion blur affects the accuracy of the star centroid extraction and the identification of stars, further reducing the performance of the star sensor.
Shiqiang Wang, Shijie Zhang, Mingfeng Ning, Botian Zhou   +3 more
doaj   +1 more source

PENGEMBANGAN PERANGKAT LUNAK UNTUK STAR SENSOR

, 2005
Abstrak Makalah ini memaparkan penelitian dan pengembangan perangkat lunak untuk star sensor (sensor bintang). CMOS kamera digunakan untuk mengambil citra bintang.
M. Yoyok Ikhsan
core  

An upstream open reading frame regulates expression of the mitochondrial protein Slm35 and mitophagy flux

FEBS Letters, EarlyView.
This study reveals how the mitochondrial protein Slm35 is regulated in Saccharomyces cerevisiae. The authors identify stress‐responsive DNA elements and two upstream open reading frames (uORFs) in the 5′ untranslated region of SLM35. One uORF restricts translation, and its mutation increases Slm35 protein levels and mitophagy.
Hernán Romo‐Casanueva, Ariann E. Mendoza‐Martínez, P. Abril Medina‐Flores, Carlos Campero‐Basaldua, Alexander DeLuna, Soledad Funes   +5 more
wiley   +1 more source

TAHAP PENGEMBANGAN STAR SENSOR SATELIT MIKRO LAPAN

, 2013
Abstrak Makalah membahas tentang pengembangan star sensor yang merupakan bagian dari pengembangan attitude control system satelit mikro di Pusat Teknologi Satelit LAPAN.
M. Arif Saifudin, Robertus Heru Triharjanto   +1 more
core  

Method for Thermo-optic Analysis in a Star Sensor

, 2010
An autonomous star sensor is a highly accurate attitude-measuring instrument used in spacecraft, and its performance is restricted by ambient temperature of the outer space.
Li, Xiu-jian, Fan, Qing-chun, Liu, Hai-bo, Tan, Ji-chun, Yang, Jian-kun   +4 more
core   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

Impact of proton radiation and annealing of CMOS image sensors on star sensor performance

AIP Advances
Star sensors play a crucial role as high-precision optical attitude navigation devices in satellite attitude control systems. The CMOS image sensor is an important component of the imaging system of the star sensor and experiences performance degradation
Yi-Hao Cui, Jie Feng, Yu-Dong Li, Bingkai Liu, Lin Wen, Qi Guo   +5 more
doaj   +1 more source

A Vessel Position Precision Analysis Based on a Two-Star Combined Approach

Journal of Marine Science and Engineering
Traditional celestial navigation mainly utilized the sextant to measure the attitude and the position contour method to calculate and resolve the vessel’s positioning problem, but these methods are not rigorous, having major deficiencies in the ...
Yulin Wu, Chao Zhuo, Tao He, Gangjun Liu, Qingqing Liu   +4 more
doaj   +1 more source