Results 61 to 70 of about 72,093 (265)

Evolutionarily divergent DUF4465 domains have a common vitamin B12‐binding function

FEBS Open Bio, EarlyView.
We show that DUF4465 family proteins, widespread across bacteria from gut microbiomes, hydrothermal vents, and soil, share a common vitamin B12‐binding function. These augmented β‐jellyroll proteins bind vitamin B12 via extended loops. Our findings establish sequence‐diverse DUF4465 proteins as a widespread class of B12‐binding proteins, highlighting ...
Charlea Clarke, Michal Banasik, Rokas Juodeikis, Martin J. Warren, Richard W. Pickersgill   +4 more
wiley   +1 more source

Impact of leg heating on central hemodynamics in postmenopausal women

Artery Research, 2018
Background: The determinants responsible for increasing central pressure augmentation, a strong risk factor for cardiovascular disease, remain highly controversial. The aim of this study was to determine the contribution of the impedance mismatch between
Keisei Kosaki, Jun Sugawara, Asako Zempo-Miyaki, Seiji Maeda   +3 more
doaj   +1 more source

Modification of specularly reflected X-ray intensity by grazing incidence coplanar Bragg-case diffraction

, 1988
The intensity of the specularly reflected X-ray beam is investigated in the case of grazing incidence simultaneously satisfying a coplanar Bragg-case diffraction.
Nieber, J., Höche, H.-R., Materlik, G., Clausnitzer, M.   +3 more
core   +1 more source

Metasurface Supporting Broadband Circular Dichroism for Reflected and Transmitted Fields Simultaneously

, 2020
We demonstrate significant optical activity in the near-infrared spectrum of a chiral metasurface which is designed using an array of L-shape silver \textcolor{black}{nanostructure}.
Amin, M., Farhat, Mohamed, Siddiqui, Omar   +2 more
core   +1 more source

Millimeter-Wave Substrate Integrated Corrugation Loaded H-Plane Horn Antenna with Beamwidth and Back Radiation Suppression

, 2023
This letter presents a wideband substrate-integrated H-plane horn antenna loaded with a novel E-plane corrugation. Classical substrate integrated waveguide (SIW) H-plane horn antennas suffer from poor impedance matching, large E-plane half-power ...
Zhenxiang Yi, Song, Weiguang, Lei Wang, Yi, Zhenxiang, Wang, Lei, Weiguang Song   +5 more
core   +1 more source

Hyperactive ice‐binding proteins stabilize cell membranes and improve resistance to dehydration stress in Caenorhabditis elegans

FEBS Open Bio, EarlyView.
TisIBP8, a fungal‐derived hyperactive ice‐binding protein, helps Caenorhabditis elegans survive dehydration. It localizes near cell membranes, reduces cell damage, and helps maintain membrane structure during drying. These results suggest that ice‐binding proteins can protect cells from dehydration stress as well as freezing stress.
Daiki Shimose, Kotaro Ozaki, Ryohei Kuriyama, Yuka Ikemoto, Kazuhiro Mio, Yuji C. Sasaki, Tatsuya Arai, Sakae Tsuda, Yoichi Shinkai, Masahiro Kuramochi   +9 more
wiley   +1 more source

Effect of internal reflections on the radiation properties and input admittance of integrated lens antennas [PDF]

, 1999
This paper begins with the modeling of the reflected waves within integrated lens antennas, which consist of a dielectric lens on which a planar antenna is mounted.
Maagt, PJI Peter de, Herben, MHAJ Matti, Maagt, P.J.I. de, Vorst, van der, M.J.M., Vorst, MJM Maarten van der, Vorst, M.J.M. van der, Herben, M.H.A.J., de Maagt, P.J.I.   +7 more
core   +1 more source

Long‐Term Follow‐Up of Chemotherapy‐Associated Biological Aging in Women With Early Breast Cancer

Aging and Cancer, EarlyView.
Women threated with adjuvant chemotherapy for early breast cancer have sustained long‐term increase in p16INK4a,, a robust marker of cell senescence, suggesting a chemotherapy‐associated age acceleration. p16INK4a as well as other biomarkers may identify patients at greatest risk for senescence‐related diseases of aging.
Hyman B. Muss, Alexis C. Wardell, Allison M. Deal, Kirsten A. Nyrop, Allison Ross, Yara G. Abdou, Jeffrey D. Aldrich, Lisa A. Cary, E. Claire Dees, Katherine E. Reeder‐Hayes, Emily M. Ray, Natalia Mitin, Denis Tsygankov   +12 more
wiley   +1 more source

Evaluating and Quantifying the Climate-Driven Interannual Variability in Global Inventory Modeling and Mapping Studies (GIMMS) Normalized Difference Vegetation Index (NDVI3g) at Global Scales

Remote Sensing, 2013
Satellite observations of surface reflected solar radiation contain information about variability in the absorption of solar radiation by vegetation.
Alvaro Ivanoff, G. James Collatz, Fan-Wei Zeng, Jorge E. Pinzon   +3 more
doaj   +1 more source

The thermal implications and ecological consequences of coloration in selected species : tenebrionid beetles (Onymacris bicolor and Onymacris ungui cularis), Cape gannets (Morus capensis) and Cape cormorants (Phalacrocorax capensis)

, 1989
Bibliography: leaves 176-192.The thermal significance of coloration was investigated in two species of Namib Desert tenebrionid beetles and two species of marine birds.
Lombard, Amanda T
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