Results 71 to 80 of about 31,818 (301)

How to Fish With Respect: A Transformation of Human‐Fish Relations in Riverside Amazonia

open access: yesAmerican Anthropologist, EarlyView.
ABSTRACT Riverside inhabitants of the Middle Xingu River Basin, in the Brazilian Amazonia, frequently say that it is important to respect animals and the forest spirits who protect them. In recent decades, however, the development of an iced fish industry in the region has changed what respect means and how it is expressed when it comes to fishing ...
Vinicius de Aguiar Furuie
wiley   +1 more source

LIQUID PROPULSION AT IAE: VISION OF THE ACTIVITIES AND FUTURE PERSPECTIVES. doi: 10.5028/jatm.2009.010199106

open access: yesJournal of Aerospace Technology and Management, 2011
This paper presents the activities in the area of liquid propulsion, which received an effective boost at the end of the 90s.
Marco F. Carvalho Torres   +4 more
doaj  

Viability of an Electrically Driven Pump-Fed Hybrid Rocket for Small Launcher Upper Stages

open access: yesAerospace, 2019
An electrically driven pump-fed cycle for a hybrid rocket engine is proposed and compared to a simpler gas-pressurized feed system. A liquid-oxygen/paraffin-based fuel hybrid rocket engine which powers the third stage of a Vega-like launcher is ...
Lorenzo Casalino   +2 more
doaj   +1 more source

Numerical Approach for the Estimation of Throat Heat Flux in Liquid Rocket Engines [PDF]

open access: hybrid, 2020
Pierluigi Concio   +2 more
openalex   +1 more source

Nondestructive testing of brazed rocket engine components [PDF]

open access: yes, 1968
Report details study made of nondestructive radiographic, ultrasonic, thermographic, and leak test methods used to inspect and evaluate the quality of the various brazed joints in liquid-propellant rocket engine components and assemblies. Descriptions of
Adams, C. J.   +2 more
core   +1 more source

Effect of Moderate Heat on TCE Reductive Dechlorination Rates in Groundwater

open access: yesGroundwater Monitoring &Remediation, EarlyView.
Abstract Low‐temperature heating (in the mesophilic range of ~15 to 40 °C) of contaminated aquifers offers the prospect of increasing the rates for biotic and abiotic treatment of volatile organic compounds. Thermal In Situ Sustainable Remediation (TISR®) is one of the approaches available to implement low temperature heating.
David L. Freedman   +3 more
wiley   +1 more source

Analysis of low-thrust liquid rocket engines with a methane air pump unit

open access: yesВестник Самарского университета: Аэрокосмическая техника, технологии и машиностроение, 2016
The first airplane working on cryogenic fuel was developed in the USSR in early 1980s on the basis of the passenger aircraft Tu-154. It was then modified using a hydrogen engine installed instead of one of the three kerosene engines.
A. I. Ivanov   +2 more
doaj   +1 more source

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