Results 41 to 50 of about 1,271,550 (296)

Ultra deep sub-kpc view of nearby massive compact galaxies

, 2012
Using Gemini North telescope ultra deep and high resolution (sub-kpc) K-band adaptive optics imaging of a sample of 4 nearby (z~0.15) massive (~10^{11}M_sun) compact ...
Anna Ferré-Mateu, Bezanson, Blanton, Buitrago, Buitrago, Cappellari, Cassata, Cenarro, Daddi, Damjanov, Eleazar R. Carrasco, Fan, Fan, Feldmann, Ferré-Mateu, Grogin, Hopkins, Ignacio Trujillo, Koekemoer, Kriek, Maller, Mármol-Queraltó, Naab, Newman, Newman, Nipoti, Onodera, Oser, Persson, Shih, Sommer-Larsen, Szomoru, Sérsic, Taylor, Trujillo, Valentinuzzi, van de Sande, van der Wel, van Dokkum   +38 more
core   +1 more source

Bandwidth-Enhanced Circularly Polarized Spiral Antenna With Compact Size

IEEE Access, 2020
A compact circularly polarized (CP) spiral antenna with enhanced impedance and 3-dB axial ratio (AR) bandwidths that is fed by a tapered coax balun is presented.
Ling-Lu Chen, Lei Chang, Zhuang-Zhi Chen, Qiao-Na Qiu   +3 more
doaj   +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

Compact Radio Sources: Their Use and Size [PDF]

Symposium - International Astronomical Union, 1982
Compact radio sources are both interesting from an astrophysical point of view and useful for geophysics. They propose some very interesting astrophysical questions as to their energy generation and transport. Their small size allows the measurement of their positions to unprecedented accuracy extending astrometric measurements of parallax and proper ...
K. J. Johnston, E. O. Hulburt
openaire   +2 more sources

Compact Quad-Port MIMO Antenna Employing Defected Substrate and Ground Plane for Sub-6 GHz 5G Communication

IEEE Access
This work presents a low-profile, compact quad-port MIMO antenna structure optimized for sub-6 GHz and X-band wireless communication. The antenna employs a tapered and stepped monopole radiator in conjunction with defected substrate and ground plane ...
Bhaskara Rao Perli, Tathababu Addepalli, Manumula Srinubabu, Sivasubramanyam Medasani, Padmaja Nimmagadda, C. Raju, Manish Sharma, Zahriladha Zakaria, Ahmed Jamal Abdullah Al-Gburi   +8 more
doaj   +1 more source

Linking neurogenesis, oligodendrogenesis, and myelination defects to neurodevelopmental disruption in primary mitochondrial disorders

FEBS Letters, EarlyView.
Mitochondrial remodeling shapes neural and glial lineage progression by matching metabolic supply with demand. Elevated OXPHOS supports differentiation and myelin formation, while myelin compaction lowers mitochondrial dependence, revealing mitochondria as key drivers of developmental energy adaptation.
Sahitya Ranjan Biswas, Porter L. Tomsick, Alicia M. Pickrell, Paul D. Morton   +3 more
wiley   +1 more source

Design and Simulation of a Novel UWB Bandpass Filter with Sharp Roll-Off, Compact Size and Wide Upper Stopband based on a Multiple-Mode Resonator [PDF]

Journal of Intelligent Procedures in Electrical Technology, 2014
In this paper, a novel microstrip-line ultra-wideband (UWB) bandpass filter (BPF) based on multiple-mode resonator (MMR) is designed, analyzed and simulated.
Seyyed Jamal Borhani, Mohammad Amin Honarvar, Abdolmehdi Dadgar Pour   +2 more
doaj  

A Compact-Size Wideband Optically-Transparent Water Patch Antenna Incorporating an Annular Water Ring

IEEE Access, 2019
A wideband optically-transparent water patch antenna with a compact size is proposed. Both the water patch and the water ground plane are made of distilled water to realize the highly optical transparency. Particularly, by simply incorporating an annular
Jie Sun, Kwai-Man Luk
doaj   +1 more source

A compact metasurface-based circularly polarized antenna with high gain and high front-to-back ratio for RFID readers.

PLoS ONE, 2023
Developing a compact circularly polarized (CP) antenna with good radiation characteristics for handheld radio frequency identification (RFID) readers is a very challenging task. Many compact CP antennas have been reported in the open literature, but most
Hung Tran-Huy, Huy-Hoang Nguyen, Thao Hoang Thi Phuong   +2 more
doaj   +1 more source

Genetic attenuation of ALDH1A1 increases metastatic potential and aggressiveness in colorectal cancer

Molecular Oncology, EarlyView.
Aldehyde dehydrogenase 1A1 (ALDH1A1) is a cancer stem cell marker in several malignancies. We established a novel epithelial cell line from rectal adenocarcinoma with unique overexpression of this enzyme. Genetic attenuation of ALDH1A1 led to increased invasive capacity and metastatic potential, the inhibition of proliferation activity, and ultimately ...
Martina Poturnajova, Zuzana Kozovska, Ondrej Pos, Kristina Pavlov, Sachin Gulati, Peter Makovicky, Kristina Jakic, Monika Burikova, Eva Sedlackova, Barbora Svitkova, Silvia Tyciakova, Vojtech Bystry, Nicolas Blavet, Boris Tichy, Matej Hrnciar, Jaroslav Budis, Miroslav Tomas, Peter Dubovan, Georgina Kolnikova, Veronika Repaska, Nikoleta Mojzesova, Eva Zomborska, Daniel Pindak, Michal Mego, Tomas Szemes, Miroslava Matuskova   +25 more
wiley   +1 more source