Results 91 to 100 of about 358,289 (299)

Logging while drilling electromagnetic wave responses in inclined bedding formation

Petroleum Exploration and Development, 2019
For real-time inversion and fast reconstruction of formation true resistivity, the forward modeling of electromagnetic wave logging while drilling is usually based on the transversely isotropic formation model with vertical symmetry axis (VTI medium ...
Yiren FAN, Xufei HU, Shaogui DENG, Xiyong YUAN, Haitao LI   +4 more
doaj   +1 more source

Transcriptional profiling of circulating extracellular vesicles from prebiopsy prostate cancer patients

Molecular Oncology, EarlyView.
RNA profiling of circulating extracellular vesicles (EVs) from blood samples of men undergoing prostate biopsy identifies transcripts associated with clinically significant prostate cancer. Integrative analysis with public tumor datasets links EV‐derived gene signatures to tumor stage and progression‐free survival, highlighting CASP3, XRCC2, and RIT1 ...
Stefan Werner, Pierre Tennstedt, Randi C. Pose, Christian Müller, Katharina Besler, Svenja Schneegans, Malik Alawi, Marie C. Roesch, Sven Peine, Desiree Bonci, Joanna Budna‐Tukan, Evi Lianidou, Catherine Alix‐Panabières, Derya Tilki, Klaus Pantel   +14 more
wiley   +1 more source

A simplified 3D finite difference method for electromagnetic logging while drilling simulation in symmetrical models

Frontiers in Earth Science
Electromagnetic (EM) Logging While Drilling (LWD) plays an increasingly significant role in oil and gas exploration and development. Fast and accurate simulation of EM LWD is essential for optimizing tool parameters and data processing.
Fengbo Li, Fengbo Li, Fengbo Li, Zhenguan Wu, Weining Ni, Weining Ni, Weining Ni, Xin Li, Xin Li, Xin Li, Xiaoqiao Liao, Hong Xiao, Yunxin Zeng   +12 more
doaj   +1 more source

Soil–Atmosphere Exchange of Nitrous Oxide, Nitric Oxide, Methane, and Carbon Dioxide in Logged and Undisturbed Forest in the Tapajos National Forest, Brazil [PDF]

, 2009
Selective logging is an extensive land use in the Brazilian Amazon region. The soil–atmosphere fluxes of nitrous oxide (N2O), nitric oxide (NO), methane (CH4), and carbon dioxide (CO2) are studied on two soil types (clay Oxisol and sandy loam Ultisol ...
Asner, Gregory P., Crill, Patrick M., de Oliveira, Raimundo Cosme, Jr., Dias, Jadson D., Keller, Michael, Silva, Hudson, Varner, Ruth K.   +6 more
core   +2 more sources

Proteasome inhibitor, ixazomib prevents topoisomerase‐I degradation and reverses irinotecan resistance in colorectal cancer

Molecular Oncology, EarlyView.
Ixazomib inhibits proteasome‐mediated degradation of topoisomerase I induced by irinotecan, thereby restoring drug sensitivity and promoting tumor cell death in colorectal cancer. Irinotecan, a topoisomerase I (topoI) inhibitor, is widely used for colorectal cancer, but resistance remains a major clinical challenge.
Yuho Ebata, Koji Ando, Hirofumi Hasuda, Koshi Mimori, Elizabeth C. Unan, Siddhartha Pulukuri, Aahana Tiku, Allison Berger, Eiji Oki, Ajit Bharti, Tomoharu Yoshizumi   +10 more
wiley   +1 more source

Circulating tumor cell viability during and after radiotherapy mirrors treatment response in cancer patients

Molecular Oncology, EarlyView.
Radiotherapy (RT) response depends on the DNA repair capacity of tumor and host cells. We show that circulating tumor cell (CTC) counts and apoptosis rates before and after RT predict treatment response and outcome, which can be accessed via easily accessible liquid biopsy approaches. Created in BioRender. Wikman, H.
Yvonne Goy, Jana Löptien, Cornelia Coith, Afroditi Nanou, Katharina Hintelmann, Pinnschmidt Hans, Cordula Petersen, Klaus Pantel, Sabine Riethdorf, Kerstin Borgmann, Harriet Wikman   +10 more
wiley   +1 more source

Predicting density log from well log using machine learning techniques and heuristic optimization algorithm: A comparative study

Petroleum Research
In the petroleum industry, the analysis of petrophysical parameters is critical for efficient reservoir management, production optimization, development strategies, and accurate hydrocarbon reserve estimations.
Mehdi Rahmati, Ghasem Zargar, Abbas Ayatizadeh Tanha   +2 more
doaj   +1 more source

Harvester machine for small businesses [PDF]

, 2019
The article presents an analytical review of modern logging machines, the main technical characteristics, as well as a way to improve them in order to reduce logging costs in small enterprises of the forest industry.В статье приведен аналитический обзор ...
Казанцев, Р. В., Черник, Д. В.   +1 more
core  

Mycobacterial cell division arrest and smooth‐to‐rough envelope transition using CRISPRi‐mediated genetic repression systems

FEBS Open Bio, EarlyView.
CRISPRI‐mediated gene silencing and phenotypic exploration in nontuberculous mycobacteria. In this Research Protocol, we describe approaches to control, monitor, and quantitatively assess CRISPRI‐mediated gene silencing in M. smegmatis and M. abscessus model organisms.
Vanessa Point, Wafaa Achache, Janïs Laudouze, Eliana Sepulveda Ramos, Mickaël Maziero, Céline Crauste, Stéphane Canaan, Pierre Santucci   +7 more
wiley   +1 more source

Productivity in the Forest Products Sector: A Review of the Literature [PDF]

The present literature review is an attempt to gather and summarize the extent of our knowledge of the productivity trends and levels in the forest products sector. We consider single factor as well as total factor productivity definitions.
Centre for the Study of Living Standards
core