Results 61 to 70 of about 1,808,593 (336)

Status, perspectives and trends of satellite navigation

Satellite Navigation, 2020
This paper reviews the status of satellite navigation (as per 11 May 2020)—without claim for completeness—and discusses the various global navigation satellite systems, regional satellite navigation systems and satellite-based augmentation systems ...
Guenter W. Hein
doaj   +1 more source

Satellite to Satellite Visibility [PDF]

The Open Astronomy Journal, 2012
In this paper, general analytical and computational technique for satellite-to-satellite visibility will be established. The developments are general in the sense that the visibility conditions can be used whatever the types of the satellite orbits may be. Numerical applications are also included.
openaire   +1 more source

Overexpression of CDT1 inhibits cell cycle progression at S phase by interacting with the mini‐chromosome maintenance complex and causes DNA damage

FEBS Open Bio, EarlyView.
CDT1 is an essential protein for DNA replication licensing that loads the MCM complex, the eukaryotic replicative DNA helicase, onto replication origins. Overexpression of CDT1 induces cell cycle arrest at the S phase. Here we showed CDT1 inhibits the progression of replication forks by interacting with the MCM complex, leading to the stalling and ...
Takashi Tsuyama, Nonoka Takayama, Rina Tanaka, Yuuki Arai, Yohko Yamaguchi, Yuko Nawata, Yutaro Azuma, Shusuke Tada   +7 more
wiley   +1 more source

Satellite retrieval system [PDF]

, 1983
A satellite retrieval system with first and second pairs of coacting parallel bars are separately mounted in spaced parallel planes on the front of a spacecraft.
Loughead, T. E., Pruett, E. C., Robertson, K. B.   +2 more
core   +1 more source

Architectures and Key Technical Challenges for 5G Systems Incorporating Satellites [PDF]

, 2018
Satellite Communication systems are a promising solution to extend and complement terrestrial networks in unserved or under-served areas. This aspect is reflected by recent commercial and standardisation endeavours. In particular, 3GPP recently initiated
Alagha, N., Andrenacci, S., Awoseyila, A., Chatzinotas, S., Cioni, S., Conti, M., Evans, B., Foggi, T., Gaudio, L., Guidotti, A., Maturo, N., Ugolini, A., Vanelli-Coralli, A.   +12 more
core   +3 more sources

Homologous expression and purification of human HAX‐1 for structural studies

FEBS Open Bio, EarlyView.
This research protocol provides detailed instructions for cloning, expressing, and purifying large quantities of the intrinsically disordered human HAX‐1 protein, N‐terminally fused to a cleavable superfolder GFP, from mammalian cells. HAX‐1 is predicted to undergo posttranslational modifications and to interact with membranes, various cellular ...
Mariana Grieben
wiley   +1 more source

Explorer Satellite Electronics [PDF]

, 1960
A discussion is presented of the design restrictions and the philosophy which enabled the Explorer satellites to be first during the IGY to reveal the presence of a belt of intense cosmic radiation encircling the earth's equator.
Eyraud, J. P., Richter, H. L., Victor, W. K.   +2 more
core   +1 more source

Estimating rainfall and water balance over the Okavango River Basin for hydrological applications [PDF]

, 2006
A historical database for use in rainfall-runoff modeling of the Okavango River Basin in Southwest Africa is presented. The work has relevance for similar data-sparse regions.
Adeyewa, Adler, Brath, Cornelis Vanderpost, Denis Hughes, Dominic Kniveton, Gan, Grimes, Haddad, Julie Wilk, Kummerow, Kummerow, Kummerow, Lebel, Lotta Andersson, Martin C. Todd, McCarthy, Nash, Negri, New, Oki, Russell Layberry, Susan Ringrose, Weber, Wilk   +24 more
core   +2 more sources

Overview of molecular signatures of senescence and associated resources: pros and cons

FEBS Open Bio, EarlyView.
Cells can enter a stress response state termed cellular senescence that is involved in various diseases and aging. Detecting these cells is challenging due to the lack of universal biomarkers. This review presents the current state of senescence identification, from biomarkers to molecular signatures, compares tools and approaches, and highlights ...
Orestis A. Ntintas, Sylvia Vagena, Pavlos Pantelis, Giorgos Theocharous, Russel Petty, Konstantinos Evangelou, Vassilis G. Gorgoulis   +6 more
wiley   +1 more source

Multi-GNSS products and services at iGMAS Wuhan Innovation Application Center: strategy and evaluation

Satellite Navigation, 2022
Over the past years the International Global Navigation Satellite System (GNSS) Monitoring and Assessment System (iGMAS) Wuhan Innovation Application Center (IAC) dedicated to exploring the potential of multi-GNSS signals and providing a set of products ...
Xingxing Li, Qingyun Wang, Jiaqi Wu, Yongqiang Yuan, Yun Xiong, Xuewen Gong, Zhilu Wu   +6 more
doaj   +1 more source