Results 41 to 50 of about 2,418,437 (251)

Ultra-fast escape of a deformable jet-propelled body

open access: yes, 2013
In this work a cephalopod-like deformable body that fills an internal cavity with fluid and expels it to propel an escape manoeuvre, while undergoing a drastic external shape change through shrinking, is shown to employ viscous as well as mainly inviscid
Triantafyllou, M.S., Weymouth, G.D.
core   +1 more source

Identification and characterisation of calcitonin receptor isoforms expressed in glioblastoma derived glioma stem and U‐87 MG cells

open access: yesFEBS Open Bio, EarlyView.
Glioblastoma cells express calcitonin receptor variants (CT receptor isoforms) that may help them survive stress. Using qPCR, transcript‐specific long‐read nanopore sequencing, immunofluorescence co‐localisation and comparative sequence analysis, this study identifies a novel alternatively spliced CALCR transcript that encodes the CTb receptor isoform ...
Pragya Gupta   +7 more
wiley   +1 more source

Hydrogen Loss on Venus Driven by Photochemistry

open access: yesThe Astrophysical Journal Letters
Venus has experienced substantial H loss through hydrodynamic outflow in its early history, transforming from a warm and wet state to the current arid and scorching state. While Venus continues to lose H today, no consensus has been reached regarding the
Hao Gu   +8 more
doaj   +1 more source

New Approach of Hybrid Momentum Exchange Devices for Spacecraft Attitude Control System

open access: yesGuidance, Navigation and Control
Control moment gyroscopes (CMGs) are a favorable choice for spacecraft attitude control systems thanks to their torque amplification capability.
Haytham M. Gamal   +3 more
doaj   +1 more source

Anatomical connections of the periaqueductal gray: specific neural substrates for different kinds of fear

open access: yesBrazilian Journal of Medical and Biological Research, 2003
The periaqueductal gray (PAG) has been traditionally considered to be an exit relay for defensive responses. Functional mapping of its subdivisions has advanced our knowledge of this structure, but synthesis remains difficult mainly because results from ...
D.M.L. Vianna, M.L. Brandão
doaj   +1 more source

Selection of neutralizing antibody escape mutants with type A influenza virus HA-specific polyclonal antisera: possible significance for antigenic drift [PDF]

open access: yes, 1997
Ten antisera were produced in rabbits by two or three intravenous injections of inactivated whole influenza type A virions. All contained haemagglutination-inhibition (HI) antibody directed predominantly to an epitope in antigenic site B and, in addition,
Cleveland, S. Matthew   +2 more
core   +1 more source

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

Reaction-Diffusion Model of CAR-T Cell Therapy in Solid Tumours with Antigen Escape

open access: yesComputation
Developing effective CAR-T cell therapy for solid tumours remains challenging because of biological barriers such as antigen escape and an immunosuppressive microenvironment. The aim of this study is to develop a mathematical model of the spatio-temporal
Maxim V. Polyakov, Elena I. Tuchina
doaj   +1 more source

Research Progress on Relation Between CD47 and Immunotherapy on Lymphoma

open access: yesZhongliu Fangzhi Yanjiu, 2021
CD47 is a member of the immunoglobulin superfamily. It is expressed on various cells and tissues of human, but it is more expressed on tumor cells, especially in various hematopoietic tumors.
LUO Yiyang, FENG Xiaoli
doaj   +1 more source

Predator escape tactics in birds: linking ecology and aerodynamics [PDF]

open access: yes, 2010
In most birds, flight is the most important means of escape from predators. Impaired flight abilities due to increased wing loading may increase vulnerability to predation.
Hout, Piet J. van den,   +16 more
core   +2 more sources

Home - About - Disclaimer - Privacy