Results 141 to 150 of about 1,206,493 (389)

Oriented Perforation Techniques with Avoidance of Optical Fibers in Horizontal Wells and Its Application

Cejing jishu
When directional perforating operations are carried out in horizontal wells, the direction is usually achieved by installing a tilted weight in the perforating gun.
HE Hongmin, SUN Zhizhong, HU Yong, JIAO Yan, CHEN Bo, LIU Yachun, NONG Shaozhong   +6 more
doaj   +1 more source

The Economic and Environmental Effects of an EU Ban on Illegal Logging Imports. Insights from a CGE Assessment [PDF]

Illegal logging is widely recognized as a major economic problem and one of the causes of environmental degradation. Increasing awareness of its negative effects has fostered a wide range of proposals to combat it by major international conservation ...
Francesco Bosello, Ramiro Parrado, Renato Rosa   +2 more
core  

GUYAFOR: a network of research permanent plots of tropical forests in French Guiana [PDF]

, 2008
GUYAFOR, a network of forest research permanent plots, is dedicated to long term studies in forest dynamics and biodiversity. Forest plots have been established in French Guyana from the late 60's to recent years by Cirad, ONF and CNRS.
Baraloto, Christopher, Blanc, Lilian, Chave, Jérôme, Guitet, Stéphane, Jolivot, Audrey   +4 more
core  

Well Flowmeter for Logging Producing Ability of Gas Sands [PDF]

, 1948
ROBERT VINCENT, R.M. Leibrock, C.W. Ziemer   +2 more
openalex   +1 more source

The influence of ROS1 fusion partners and resistance mechanisms in ROS1‐TKI‐treated non‐small cell lung cancer patients

Molecular Oncology, EarlyView.
This real‐world study of ROS1+ NSCLC highlights fusion diversity, treatment outcomes with crizotinib and lorlatinib, and in vitro experiments with resistance mechanisms. G2032R drives strong resistance to ROS1‐targeted TKIs, especially lorlatinib. Fusion partner location does not affect overall survival to crizotinib or lorlatinib. Findings support the
Fenneke Zwierenga, Christa Dijkhuizen, Patrick Korthuis, Wim Timens, Harry Groen, Jeroen Hiltermann, Anke van den Berg, Lyndsay Drayer, Anthonie van der Wekken   +8 more
wiley   +1 more source

Investigation of Stress Variation in Push-the-Bit Rotary Steering Bearings Under Weight on Bit and Push Forces

Cejing jishu
As the key component of the push-the-bit rotary steerable system, the accuracy and reliability of the bearing system directly affect the control accuracy and drilling efficiency of the drilling tool on the borehole trajectory.
SHEN Bin, YANG Hao, XUE Zhejing, LI Wei, CHENG Feng, LU Lu, WU Jie   +6 more
doaj   +1 more source

The Tropical managed Forests Observatory: a research network addressing the future of tropical logged forests [PDF]

, 2019
While attention to logging in the tropics has been increasing, studies on the long-term effects of silviculture on forest dynamics and ecology remain scare and spatially limited.
Sist, Plinio
core  

The Fitting of a Truncated Log?Normal Curve to Daily Rainfall Data [PDF]

, 1956
SC Das
openalex   +1 more source

Emerging role of ARHGAP29 in melanoma cell phenotype switching

Molecular Oncology, EarlyView.
This study gives first insights into the role of ARHGAP29 in malignant melanoma. ARHGAP29 was revealed to be connected to tumor cell plasticity, promoting a mesenchymal‐like, invasive phenotype and driving tumor progression. Further, it modulates cell spreading by influencing RhoA/ROCK signaling and affects SMAD2 activity. Rho GTPase‐activating protein
Beatrice Charlotte Tröster, Melanie Kappelmann‐Fenzl, Anja Katrin Bosserhoff, Nicole Rachinger   +3 more
wiley   +1 more source

Method for Improving the Evaluation Quality of the Second Cementing Interface Using Acoustic Time Difference Curve

Cejing jishu
Acoustic variable density logging uses the formation wave amplitude received by the 5 ft probe to evaluate the cement bonding quality at the second cementing interface, which is one of the few logging methods that can effectively evaluate the second ...
QIU Enbo, ZHANG Boxin, DAI Yuexiang, DENG Zhaoyuan, CHEN Jing, YANG Xi, TIAN Shiyong, Tonggulike, QI Fei, CHEN Yu, ZHANG Xu, HUANG Haitao   +11 more
doaj   +1 more source