Results 31 to 40 of about 1,206,493 (389)

Fake legal logging in the Brazilian Amazon

open access: yesScience Advances, 2018
Weak control and monitoring of logging permits put the most commercially valuable Amazonian tree species at risk in Brazil. Declining deforestation rates in the Brazilian Amazon are touted as a conservation success, but illegal logging is a problem of ...
P. Brancalion   +6 more
semanticscholar   +1 more source

Log Log Laws for Empirical Measures

open access: yesThe Annals of Probability, 1980
Let $(X, \mathscr{A}, P)$ be a probability space and $\mathscr{C}$ a collection of measurable sets. Suppose $\mathscr{C}$ is a Donsker class, i.e., the central limit theorem for empirical measures holds uniformly on $\mathscr{C}$, in a suitable sense. Suppose also that suitable ($P\varepsilon$-Suslin) measurability conditions hold.
Kuelbs, J., Dudley, R. M.
openaire   +3 more sources

Eccentricity Correction of Acoustic Variable Density Logging and Its Application

open access: yesCejing jishu, 2023
In order to solve the problems of acoustic wave amplitude reduction and inaccurate cementing quality evaluation caused by the eccentricity of acoustic variable density instrument in logging process, the principle of eccentricity influence of acoustic ...
LIU Dongming   +6 more
doaj   +1 more source

Salvage logging in the world’s forests: Interactions between natural disturbance and logging need recognition

open access: yesGlobal Ecology and Biogeography, 2018
Aim: Large disturbances increasingly shape the world's forests. Concomitantly, increasing amounts of forest are subject to salvage logging. Understanding and managing the world's forests thus increasingly hinges upon understanding the combined effects of
A. B. Leverkus   +3 more
semanticscholar   +1 more source

Logging off [PDF]

open access: yesCurrent Biology, 2009
SummaryThe illegal removal and sale of tropical timber is one of the most damaging environmental problems, but a company has developed DNA techniques it hopes will better track trees' provenance. Nigel Williams reports.
openaire   +2 more sources

Design and Performance Test of ENT2465 Long-Life Neutron Tube

open access: yesHe huaxue yu fangshe huaxue
The neutron tube is the core component of the controllable neutron source logging instrument. Its working stability, temperature resistance, neutron yield and other indicators have an important impact on the working performance of instrument. At present,
LIU Ze-wei   +9 more
doaj   +1 more source

Application of Wireline Formation Tester in Moderate and Low Permeability Depleted Zones

open access: yesCejing jishu, 2023
Due to the long extraction time, some fault reservoirs in the BURUN oil field have been depleted, resulting in extremely low formation pressure. In forepart of the project, second generation WFT tool is used.
LIU Yingming   +3 more
doaj   +1 more source

Effects of post-fire logging on forest surface air temperatures in the Siskiyou Mountains, Oregon, USA [PDF]

open access: yes, 2010
Following stand-replacing wildfire, post-fire (salvage) logging of fire-killed trees is a widely implemented management practice in many forest types. A common hypothesis is that removal of fire-killed trees increases surface temperatures due to loss of ...
Campbell, J.L.   +4 more
core   +2 more sources

Current Log

open access: yesCurrent: The Journal of Marine Education, 2020
This editor’s note reflects on current events, life during a pandemic, and parenthood. It thanks educators for the work they do and invites feedback on the journal.
openaire   +7 more sources

Adaptive Extraction Method for Array Acoustic Slowness in Through-Casing Logging

open access: yesCejing jishu
To overcome the difficulty of extracting formation acoustic slowness in cased holes when the casing and formation are poorly cemented, and to address the limitation that existing methods rely on prior information such as accurate borehole parameters or ...
ZHANG Yongchao   +7 more
doaj   +1 more source

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