Results 121 to 130 of about 433,280 (361)
Steam balloon concept for lifting rockets to launch altitude [PDF]
arXiv, 2018 Launching orbital and suborbital rockets from a high altitude is beneficial because of e.g. nozzle optimisation and reduced drag. Aeroplanes and gas balloons have been used for the purpose. Here we present a concept where a balloon is filled with pure water vapour on ground so that it rises to the launch altitude.
arxiv
Prenatal hypoxia induces increased cardiac contractility on a background of decreased capillary density. [PDF]
, 2009 Background: Chronic hypoxia in utero (CHU) is one of the most common insults to fetal development and may be associated with poor cardiac recovery from ischaemia-reperfusion injury,yet the effects on normal cardiac mechanical performance are poorly ...
A Heintz +55 more
core +4 more sources
Advanced Synthesis &Catalysis, EarlyView.Abstract α‐Chiral amines are versatile building blocks for the asymmetric synthesis of optically pure high‐added‐value chemicals, including pharmaceuticals, agrochemicals, and natural products. Herein, we report a one‐pot, two‐step sequential deracemization of racemic sec‐alcohols to optically enriched primary amines throught a photo‐biocatalytic ...
Natalia Antos +5 more
wiley +1 more source
Existence theorems for thin inflated wrinkled membranes subjected to a hydrostatic pressure [PDF]
arXiv, 2006 In this paper, we establish rigorous existence theorems for a mathematical model of a thin inflated wrinkled membrane that is subjected to a shape dependent hydrostatic pressure load. We are motivated by the problem of determining the equilibrium shape of a strained high altitude large scientific balloon.
arxiv
Electrolysis-based Parylene Balloon Actuators for Movable Neural Probes [PDF]
, 2007 In order to track a specific neuron and keep good sampling neural signals during chronic implantation, the neural probes are highly desired to have moving capability.
Andersen, Richard A. +3 more
core
The protoMIRAX Hard X-ray Imaging Balloon Experiment
, 2015 The protoMIRAX hard X-ray imaging telescope is a balloon-borne experiment developed as a pathfinder for the MIRAX satellite mission. The experiment consists essentially in a coded-aperture hard X-ray (30-200 keV) imager with a square array (13$\times$13)
Avila, Manuel A. C. +8 more
core +1 more source
Artesunate Inhibits Neointimal Hyperplasia by Promoting IRF4 Associated Macrophage Polarization
Advanced Science, EarlyView.This study shows that macrophage interferon regulatory factor 4 (IRF4) improved arterial injury‐induced neointimal hyperplasia by promoting of M2 polarization via up‐regulating krüppel‐like factor 4 (KLF4) in rodent and nonhuman primate models. Notably, artesunate is identified as a potent inducer of IRF4 in macrophages, and proposed as a promising ...
Jinlin Miao +15 more
wiley +1 more source
Trajectories of Rubber Balloons used in Balloon Releases: Theory and Application [PDF]
arXiv, 2011 Balloon releases are one of the main attractions of many fairs. Helium filled rubber balloons are released to carry postcards over preferably long distances. Although such balloons have been considered in atmospheric sciences and air safety analysis, there is only scarce literature available on the subject.
arxiv
A proposal to fight tornadoes with multiple connected balloons [PDF]
arXiv, 2020 A tornado is an extreme weather condition that can cause enormous damage to human society. In this paper, we propose a low cost, environmentally friendly method to fight against tornadoes using clusters of connected balloons. Deployed over a sufficiently wide area, these large balloons may be able to reduce the wind speed of the tornado, block and ...
arxiv
FIREBALL: Detector, data acquisition and reduction [PDF]
, 2010 The Faint Intergalactic Redshifted Emission Balloon (FIREBALL) had its first scientific flight in June 2009. The instrument combines microchannel plate detector technology with fiber-fed integral field spectroscopy on an unstable stratospheric balloon ...
Evrard, Jean +9 more
core +3 more sources