Results 41 to 50 of about 22,032 (297)

Heterotropic regulation and negative homotropic cooperativity

open access: yesFEBS Open Bio, EarlyView.
We identified a structural module common to some proteins that couple negative cooperativity with heterotropic regulation, two features that rarely coexist. These proteins are ring‐like and present an ordered asymmetry whereby noncontacting subunits are symmetric, and their tertiary structure differs from that of contacting subunits.
Veronica Morea   +5 more
wiley   +1 more source

Rubidium doped nano-hydroxyapatite with cytocompatibility and antibacterial

open access: yesJournal of Asian Ceramic Societies, 2021
Hydroxyapatite (HAp) is a widely used biomaterial because it is the main inorganic component of human bone and teeth. Rubidium (Rb) is a vital trace metal element in human body, and has been reported to possess antibacterial ability and can promote ...
Yanjun Liu, Yanni Tan, Jiangsong Wu
doaj   +1 more source

Separation of Cesium and Rubidium from Solution with High Concentrations of Potassium and Sodium

open access: yesSeparations, 2023
Solvent extraction with 4-tert-butyl-2-(α-methylbenzyl) phenol (t-BAMBP) is an effective method for the separation and purification of rubidium and cesium.
Junjie Xie   +6 more
doaj   +1 more source

Electron and positron scattering by atomic rubidium / Chin Jia Hou [PDF]

open access: yes, 2011
Electron and positron scattering from the Rubidium atom is studied using the coupled-channel optical method (CCOM). This method incorporates the continuum effect within the close coupling method (CC) by including an optical potential into the ...
Chin, Jia Hou
core  

Chronobiology of Cancer: How Aging Fuels Oncogenesis at the Molecular Level

open access: yesAging and Cancer, EarlyView.
This graphical abstract illustrates the key biological pathways linking aging with cancer development and progression. In the upper left, cumulative exposure to ultraviolet radiation, toxins, and reactive oxygen species (ROS) causes DNA damage and genomic instability, whereas age‐related decline in repair mechanisms, such as ATM/ATR, BER, and NER ...
Anu Singh, Aroonima Misra, Sufian Zaheer
wiley   +1 more source

Rubidium bis(2-methyllactato)borate monohydrate

open access: yesIUCrData, 2019
The asymmetric unit of the inorganic–organic hybrid salt, poly[aqua[μ4-bis(2-methyllactato)borato]rubidium], [Rb(C8H12BO6)(H2O)]n, comprises a rubidium cation, a bis(2-methyllactato)borate anion, and a water molecule of crystallization.
Govindharajan Gokila   +2 more
doaj   +1 more source

Understanding and Mitigating the Risk of Accelerated Biological Aging in Survivors of Cancer: A Scoping Review

open access: yesAging and Cancer, EarlyView.
Cancer treatment is associated with measurable acceleration of biological aging across epigenetic, telomere, senescence, and immune biomarkers. However, biomarker validation and interventional strategies remain limited, especially in hematologic malignancies, underscoring the need for standardized multi‐omic aging assessments and adequately powered ...
Moataz Ellithi   +3 more
wiley   +1 more source

Looking outside the "Cardiac" box: Incidental detection of a metastatic lung tumor on cardiac position emission tomography/computed tomography

open access: yesWorld Journal of Nuclear Medicine, 2014
Incidental extracardiac findings are not uncommon in patients undergoing cardiac positron emission tomography/computed tomography (PET/CT) and some of these findings can have significant clinical impact.
Mohamed Shawgi, P Arumugam
doaj   +1 more source

Promoting the Selectivity of Pt/m-ZrO2 Ethanol Steam Reforming Catalysts with K and Rb Dopants

open access: yesNanomaterials, 2021
The ethanol steam reforming reaction (ESR) was investigated on unpromoted and potassium- and rubidium-promoted monoclinic zirconia-supported platinum (Pt/m-ZrO2) catalysts. Evidence from in situ diffuse reflectance infrared Fourier transform spectroscopy
Michela Martinelli   +5 more
doaj   +1 more source

A compact system for ultracold atoms [PDF]

open access: yes, 2012
This thesis describes the design, construction and optimisation of two compact setups to produce ⁸⁷Rb Bose-Einstein condensates and dual ⁷Li-⁸⁷Rb Magneto-Optical Traps (MOTs). The motivation for compact systems is to have simplified systems to cool the
Torralbo Campo, Lara
core   +2 more sources

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