Results 51 to 60 of about 273,711 (279)

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

Flexible Surface Reflector Antenna for Small Satellites

Aerospace
A novel deployable reflector antenna for small satellites has been designed, fabricated, and experimentally validated. The reflector utilizes a doubly curved flexible surface manufactured from a triaxially woven fabric-reinforced silicone (TWFS ...
Dong-Seok Kang, Dong-Hun Keum, Jun-Hyeong Choi, Min-Hyuk Lee, Kitae Park, Hwa-Young Jung, Deok-Soo Kang, Ji-Hyeon Yun, Jae-Wook Lee, Jin-Ho Roh   +9 more
doaj   +1 more source

The H alpha Galaxy Survey VI. Star-forming companions of nearby field galaxies

, 2008
We present a search for star-forming satellite galaxies that are close enough to their parent galaxies to be considered analogues of the Magellanic Clouds. Our search technique relied on the detection of the satellites in continuum-subtracted narrow-band
Azzaro, Bell, Bournaud, Bradley, Chen, Eliche-Moral, Gehrels, Gil de Paz, Haines, Hau, Haynes, Helmboldt, J. O'Neill, James, Kannappan, Kennicutt, Kennicutt, Madore, Meurer, N. S. Shane, Noeske, P. A. James, Quinn, Quinn, Read, Rozas, Schechter, Searle, Sullivan, Thilker, van Zee, White, Yang, Zaritsky   +33 more
core   +1 more source

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

Satellite Attitude Determination and Map Projection Based on Robust Image Matching

Remote Sensing, 2017
Small satellites have limited payload and their attitudes are sometimes difficult to determine from the limited onboard sensors alone. Wrong attitudes lead to inaccurate map projections and measurements that require post-processing correction.
Toru Kouyama, Atsunori Kanemura, Soushi Kato, Nevrez Imamoglu, Tetsuya Fukuhara, Ryosuke Nakamura   +5 more
doaj   +1 more source

A novel astronomical application for formation flying small satellites [PDF]

, 2009
OLFAR, Orbiting Low Frequency Antennas for Radio Astronomy, will be a space mission to observe the universe frequencies below 30 MHz, as it was never done before with an orbiting telescope.
Bentum, M.J., Boonstra, A.J., Gill, E.K.A., Veen, A.J. van der, Verhoeven, C.J.M.   +4 more
core   +1 more source

Survey of Inter-satellite Communication for Small Satellite Systems: Physical Layer to Network Layer View [PDF]

, 2016
Small satellite systems enable whole new class of missions for navigation, communications, remote sensing and scientific research for both civilian and military purposes.
Afghah, Fatemeh, Burleigh, Scott, Edmonson, William, Pinto, Frank, Radhakrishnan, Radhika, Rodriguez-Osorio, R.   +5 more
core   +3 more sources

C2α‐carbanion‐protonating glutamate discloses tradeoffs between substrate accommodation and reaction rate in actinobacterial 2‐hydroxyacyl‐CoA lyase

FEBS Open Bio, EarlyView.
Enzymes of the 2‐hydroxyacyl‐CoA lyase group catalyze the condensation of formyl‐CoA with aldehydes or ketones. Thus, by structural adaptation of active sites, practically any pharmaceutically and industrially important 2‐hydroxyacid could be biotechnologically synthesized. Combining crystal structure analysis, active site mutations and kinetic assays,
Michael Zahn, Barbara Seroka, Ryszard Lazny, Zenon Lotowski, Thore Rohwerder   +4 more
wiley   +1 more source

Design and Analysis of a Micro–Electro-Mechanical System Thruster for Small Satellites and Low-Thrust Propulsion

Aerospace
As a cost-effective and versatile solution, small satellites are increasingly being considered for space exploration. However, one of the major challenges in deploying small satellites for high total impulse missions, particularly deep space exploration,
Yubin Zhong, Fabrizio Ponti, Francesco Barato, Guojun Xia, Siyu Li, Xiao Zhang, Tao Wu   +6 more
doaj   +1 more source

A Single-Use Microthruster Concept for Small Satellite Attitude Control in Formation-Flying Applications

Aerospace, 2018
In recent years, the maturation of small satellite technology has led to their adoption for a variety of space missions. The next generation of small satellite missions, however, will likely have the satellites operating in formations or “constellations”
Sandra Romero-Diez, Lydia Hantsche, Jason M. Pearl, Darren L. Hitt, M. Ryan McDevitt, Patrick C. Lee   +5 more
doaj   +1 more source