Results 91 to 100 of about 143,162 (326)

The (Glg)ABCs of cyanobacteria: modelling of glycogen synthesis and functional divergence of glycogen synthases in Synechocystis sp. PCC 6803

FEBS Letters, EarlyView.
We reconstituted Synechocystis glycogen synthesis in vitro from purified enzymes and showed that two GlgA isoenzymes produce glycogen with different architectures: GlgA1 yields denser, highly branched glycogen, whereas GlgA2 synthesizes longer, less‐branched chains.
Kenric Lee, Dimitrios Bekiari, Sofia Doello, Karl Forchhammer   +3 more
wiley   +1 more source

Initial Orbit Determination Solution Distribution with Gooding Algorithm and Performance Enhancement

Space: Science & Technology
An initial orbit determination (IOD) solution from angles-only observations of a single short orbit arc is often required for applications such as tracklet association and fast reacquisition of a newly detected space object.
Zhengyuan Zhang, Bin Li, Zhenwei Li, Xiaohong Zhang, Jizhang Sang   +4 more
doaj   +1 more source

Fast angles-only initial relative orbit determination for onboard application

, 2019
Ardaens, J. -S., Gaias, G.
openaire   +4 more sources

An intelligent interface for satellite operations: Your Orbit Determination Assistant (YODA) [PDF]

An intelligent interface is often characterized by the ability to adapt evaluation criteria as the environment and user goals change. Some factors that impact these adaptations are redefinition of task goals and, hence, user requirements; time ...
Schur, Anne
core   +1 more source

Orbital evolution of the Carina dwarf galaxy and self-consistent star formation history determination

, 2010
We present a new study of the evolution of the Carina dwarf galaxy that includes a simultaneous derivation of its orbit and star formation history. The structure of the galaxy is constrained through orbital parameters derived from the observed distance ...
Berczik, P., Chiosi, C., Grebel, E. K., Pasetto, S., Spurzem, R.   +4 more
core   +1 more source

Structural biology of ferritin nanocages

FEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Detecting chaos, determining the dimensions of tori and predicting slow diffusion in Fermi--Pasta--Ulam lattices by the Generalized Alignment Index method

, 2008
The recently introduced GALI method is used for rapidly detecting chaos, determining the dimensionality of regular motion and predicting slow diffusion in multi--dimensional Hamiltonian systems. We propose an efficient computation of the GALI$_k$ indices,
Antonopoulos, Chris, Bountis, Tassos, Skokos, Charalampos   +2 more
core   +2 more sources

PARP inhibitors elicit distinct transcriptional programs in homologous recombination competent castration‐resistant prostate cancer

Molecular Oncology, EarlyView.
PARP inhibitors are used to treat a small subset of prostate cancer patients. These studies reveal that PARP1 activity and expression are different between European American and African American prostate cancer tissue samples. Additionally, different PARP inhibitors cause unique and overlapping transcriptional changes, notably, p53 pathway upregulation.
Moriah L. Cunningham, Jasibel Vasquez‐Gonzalez, Samantha M. Barnada, Salome Tchotorlishvili, Latese Jones, Ryan Maguire, Genevieve Lewis, Kinza Rizwan, Jenny Deng, Salma Koachar, Drithi Patel, Hailey Shankle, Tessa Mulders, Namra Ajmal, Charalambos Solomides, Emad S. Alnemri, Teresa F. Alnemri, Ayesha A. Shafi, Leonard G. Gomella, Wm Kevin Kelly, Steven B. McMahon, Matthew J. Schiewer   +21 more
wiley   +1 more source

Autonomous Orbit Determination of LLO Satellite Using DRO–LLO Links and Lunar Laser Ranging

Aerospace
A stable and high-precision autonomous orbit determination scheme for a Low Lunar Orbit (LLO) spacecraft is proposed, leveraging satellite-to-satellite tracking (SST) measurement data and lunar laser ranging data.
Shixu Chen, Shuanglin Li, Jinghui Pu, Yingjie Xu, Wenbin Wang   +4 more
doaj   +1 more source

Method of preliminary solution of the problem of space robot navigation by onboard astronomical measurements using the butterworth filter

Вестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2020
A method of preliminary solution of the problem of space robot navigation based on the results of measurements carried out using its onboard optronic equipment is presented.
V. M. Ananenko, A. D. Golyakov, P. V. Kalabin   +2 more
doaj   +1 more source