Results 1 to 10 of about 219 (46)

Comparative estimation of the quality of fire danger indexes in forests [PDF]

open access: yesСибирский лесной журнал, 2023
Weather conditions are one of the important factors, which affects forest fire danger. Taking into consideration different methodical approaches (in particular, to accounting for precipitation) and differences between forestry and natural climatic ...
R. V. Kotelnikov, A. N. Chugaev
doaj   +1 more source

Development of navigation aids and decision support systems in forest firefighting [PDF]

open access: yesСибирский лесной журнал, 2023
An analytical review of satellite navigation systems, devices for receiving and processing spatial information, in the context of their use in monitoring and extinguishing fires in the natural environment, is presented.
A. V. Bryukhanov, R. V. Kotelnikov
doaj   +1 more source

Current state of agroforestry pyrology in Russia [PDF]

open access: yesE3S Web of Conferences, 2023
This article defines the main issues of the research area under consideration, discusses the literature sources of Russian scientists engaged in research in the field of agroforestry pyrology in Russia in recent years.
Vereshchagin Evgeny Konstantinovich
doaj   +1 more source

Essay on the history of Russian forest pyrology [PDF]

open access: yesСибирский лесной журнал, 2015
Forest pyrology was used as a part of the forestry in the end of the nineteenth century. The founder of the forest pyrology in Russia was academician Ivan S. Melekhov.
P. A. Tsvetkov
doaj   +1 more source

Forest pyrology in Russia: achievements and problems [PDF]

open access: yesСибирский лесной журнал, 2017
The state of Russian forest pyrology from the beginning of XXI century to present time was examined in the article. Main problems of basic and applied research of fire scientists for the last years were revealed.
P. A. Tsvetkov
doaj   +1 more source

Experimental Testing of Host Range of the Parasitoid Wasp Trichogramma dendrolimi Under Laboratory Conditions

open access: yesInsects
Trichogramma is an important genus of egg parasitoids, applied against agricultural and forest lepidopteran pests. Known species differ in host specificity, which affects both their efficiency in field and suitability for mass rearing.
Aleksander A. Ageev   +4 more
doaj   +1 more source

Available Energy Analysis of New Double-capillary Tube Refrigeration System of Refrigerator-freezer

open access: yesZhileng xuebao, 2007
A new double - capillary tube refrigeration system for refrigerator - freezers was proposed. A capillary tube was added between the two evaporators in the fresh and frozen food storage chests to raise the evaporation temperature of the fresh food, and ...
何茂刚, 宋新洲, 张颖, 张建涛
doaj  

Performance Study on Energy Separation in Vortex Tube with Six Channels

open access: yesZhileng xuebao, 2007
The performances of energy separation in a vortex tube were experimentally studied with compressed air to be the working medium and the influences of inlet pressure and cold mass flow fraction on cooling effect and heating effect of the vortex tube were ...
王远鹏, 聂荣华, 林明峰
doaj   +2 more sources

An Integrated Numerical Design Tool for Air-to-refrigerant Heat Exchangers

open access: yesZhileng xuebao, 2012
In order to meet the requirement of simulating different types of heat exchangers which are widely used in refrigerating system by a simulation tool, a general 3D distributed-parameter numerical design tool, HXSIM, is introduced.
Ren Tao, Ding Guoliang, Wang Tingting
doaj  

A Review on Heat Transfer Enhancement in Shell-and-tube Heat Exchanger of Compression Type Refrigeration and Air Conditioning Unit

open access: yesZhileng xuebao, 2012
Heat exchangers including condenser and evaporator are important equipments in the compression type refrigeration and air conditioning units, and their heat transfer coefficients have a direct effect on the efficiency and cost of the units.
Zhang Zhengguo   +4 more
doaj  

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