Results 81 to 90 of about 1,122,223 (383)

Dynamics of a stochastic hepatitis B virus transmission model with media coverage and a case study of China

open access: yesMathematical Biosciences and Engineering, 2023
Hepatitis B virus (HBV) infection is a global public health problem and there are 257 million people living with chronic HBV infection throughout the world.
Jiying Ma, Shasha Ma
doaj   +1 more source

Angular diameters, fluxes and extinction of compact planetary nebulae: further evidence for steeper extinction towards the Bulge

open access: yes, 2004
We present values for angular diameter, flux and extinction for 70 Galactic planetary nebulae observed using narrow band filters. Angular diameters are derived using constant emissivity shell and photoionization line emission models.
A. A. Zijlstra   +42 more
core   +2 more sources

Phosphomimetic mutations near active sites of proteins in Thermus thermophilus suggest a widespread regulatory mechanism

open access: yesFEBS Open Bio, EarlyView.
In Thermus thermophilus, more than half of the phosphorylation sites identified by proteomic analysis are located near the active site. All phosphomimetic mutants of phosphosites of six enzymes belonging to different families showed severely reduced activity compared with the wild‐type, particularly in the turnover number.
Anzu Nishiwaki   +3 more
wiley   +1 more source

Stochastic two-species mutualism model with jumps

open access: yesModern Stochastics: Theory and Applications, 2020
The existence and uniqueness are proved for the global positive solution to the system of stochastic differential equations describing a two-species mutualism model disturbed by the white noise, the centered and non-centered Poisson noises.
Olga Borysenko, Oleksandr Borysenko
doaj   +1 more source

Why we should be looking for longitudinal patterns in biodiversity

open access: yesFrontiers in Ecology and Evolution, 2023
Our understanding of global diversity patterns relies overwhelmingly on ecological and evolutionary correlates of latitude, and largely ignores longitude.
Şerban Procheş   +3 more
doaj   +1 more source

Cloning, expression, purification, and structural modeling of the Chandipura virus matrix protein

open access: yesFEBS Open Bio, EarlyView.
This research protocol offers a guide for the cloning, expression, and purification of the Chandipura virus matrix protein using E. coli. It also includes a step‐by‐step procedure for cloning, expressing, and conducting fluorescence imaging of GFP‐fused Chandipura virus matrix protein in mammalian cell lines.
Mariana Grieben
wiley   +1 more source

The microbiota regulate neuronal function and fear extinction learning

open access: yesNature, 2019
Multicellular organisms have co-evolved with complex consortia of viruses, bacteria, fungi and parasites, collectively referred to as the microbiota1.
Coco Chu   +23 more
semanticscholar   +1 more source

Interstellar Silicon Depletion and the Ultraviolet Extinction [PDF]

open access: yes, 2017
Spinning small silicate grains were recently invoked to account for the Galactic foreground anomalous microwave emission. These grains, if present, will absorb starlight in the far ultraviolet (UV).
Li, Aigen, Mishra, Ajay
core   +3 more sources

Homologous expression and purification of human HAX‐1 for structural studies

open access: yesFEBS 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

A Multi‐Center Retrospective Cohort Study of Neurosarcoidosis Myelitis: Current Observations and Future Directions

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective The optimal treatment for neurosarcoidosis myelitis is uncertain. We characterize incident neurosarcoidosis myelitis and assess treatment response by MRI and clinical scales. Methods Incident probable or definite neurosarcoidosis myelitis in adults was retrospectively identified from 13 academic medical centers.
Giovanna S. Manzano   +39 more
wiley   +1 more source

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