Results 21 to 30 of about 3,120,215 (305)

Cosmological Constraints on the Formation and Survival of Small Hydrogen

open access: yesPhysics
The paper investigates the possibility of small hydrogen (SH) formation in the early Universe during an interval of about 10–80 s after the Big Bang. Assuming that SH exists as proposed by the author earlier, the current study examines the cosmological ...
Jerry Va’vra
doaj   +1 more source

A Simple Argument That Small Hydrogen May Exist

open access: yesPhysics
This paper examines whether a compact electron–proton configuration (“small hydrogen”) with a characteristic radius of a few femtometers is excluded by basic relativistic kinematics and simple stationarity constraints. Motivated by earlier discussions of
J. Va’vra
doaj   +1 more source

Forecasting the Dialysis Burden in Japan: Validation‐Based Projections of Prevalence and Incidence Through 2050

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Japan has one of the highest dialysis prevalence rates worldwide and a shrinking, aging population. Whether dialysis burden has entered a sustained post‐peak phase or whether recent declines partly reflect pandemic‐related disruptions remains uncertain.
Hatice Şahin   +2 more
wiley   +1 more source

Quality assurance of the linear accelerator device using Star Track and Perspex

open access: yesIraqi Journal of Physics, 2019
In this study, the quality assurance of the linear accelerator available at the Baghdad Center for Radiation Therapy and Nuclear Medicine was verified using Star Track and Perspex. The study was established from August to December 2018.
Dr. Basim Khalah Rejah
doaj   +1 more source

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

An overview of collective effects in circular and linear accelerators [PDF]

open access: yes, 1989
The purpose of both linear and circular accelerator is, of course, to accelerate beams of charged particles. In order to do this it is necessary not only to accelerate particles but also to confine them transversely so that they remain in the vacuum ...
Ruth, R.D. (Stanford Linear Accelerator Center, Menlo Park, CA (USA))
core  

A source of highly polarized electrons at the Stanford Linear Accelerator Center [PDF]

open access: yes, 1979
Alguard MJ, Clendenin JE, Ehrlich RD, et al. A source of highly polarized electrons at the Stanford Linear Accelerator Center. Nucl.Instrum.Methods.
Clendenin, J. E.   +10 more
core   +1 more source

Beam dynamics simulation of a double pass proton linear accelerator

open access: yesPhysical Review Accelerators and Beams, 2017
A recirculating superconducting linear accelerator with the advantage of both straight and circular accelerator has been demonstrated with relativistic electron beams.
Kilean Hwang, Ji Qiang
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Computation applied to particle accelerator simulations [PDF]

open access: yes, 1991
The rapid growth in the power of large-scale computers has had a revolutionary effect on the study of charged-particle accelerators that is similar to the impact of smaller computers on everyday life.
Yan, Y.T. (Superconducting Super Collider Lab., Dallas, TX (United States))   +1 more
core  

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