Results 31 to 40 of about 6,364,937 (291)

Design and evaluation of lost circulation materials for severe environments [PDF]

, 1988
An independent analysis of lost circulation materials for geothermal applications has been completed using unique laboratory tools developed for the purpose.
Wright, E. K., Loeppke, G. E., Glowka, D. A.   +2 more
core  

Characterization of therapeutic antibodies targeting lymphatic and vascular resistance factor for the treatment of hypervascularized and highly metastatic cancers

Molecular Oncology, EarlyView.
LVRF (lymphatic and vascular resistance factor) is a VEGFA splice variant upregulated in response to anti‐angiogenic therapy that fosters tumor adaptation through enhanced vascularization, lymphangiogenesis, and metastatic dissemination. Targeting LVRF with fully human neutralizing antibodies disrupts these processes and limits resistant tumor growth ...
Marion David, Arthur Karaulic, Audrey Bennetot, Clémence Fournier, Quentin Odet, Arthur Gouraud, Isabelle Bourget, Cédric Gaggioli, Sandy Giuliano, Frédéric Luciano, Olivier Léger, Zaki Sellam, Gilles Pagès   +12 more
wiley   +1 more source

Full-scale facility for evaluating lost circulation materials and techniques [PDF]

, 1983
Sandia National Laboratories has designed and built a full-scale facility for the evaluation of lost circulation materials and techniques under simulated down-hole geothermal wellbore conditions.
Caskey, B. C., Loeppke, G. E.
core  

From energy provision to protein synthesis: Tunnelling nanotubes as mediators of intercellular metabolic cooperation in cancer

FEBS Open Bio, EarlyView.
The cytoskeleton‐mediated transport of mitochondria via tunnelling nanotubes restores respiration, increases ATP production, rescues cells from apoptosis, activates the AKT/mTOR signalling pathway, promotes cell migration and invasiveness, contributes to cancer progression and treatment resistance.
Stanislava Martínková, Jan Trnka
wiley   +1 more source

Beta1 subunits enable fentanyl‐induced BK channel activation and opioid regulation of cerebral artery diameter

FEBS Open Bio, EarlyView.
During the current opioid crisis, the majority of overdose deaths are attributed to ultra‐potent synthetic opioids, such as fentanyl. While fentanyl exerts its action via opioid receptors, we propose that potassium channels in the brain blood vessels may also sense fentanyl.
Shiwani Thapa, Mohammed Nooh, Akhil Geddati, Alex Dopico, Anna N. Bukiya   +4 more
wiley   +1 more source

Lost circulation in fractured carbonate formations: Mechanisms, treatment strategies and field evidence from Kurdistan Region of Iraq

Journal of Engineering and Applied Science
Lost circulation is a recurring and costly challenge in drilling operations, causing severe wellbore instability, non-productive time (NPT), and increased drilling costs.
Jagar A. Ali, Awar Khalid, Arya Issa, Mardin Abdalqadir   +3 more
doaj   +1 more source

Laboratory study investigating the impact of different LCMs additives on drilling mud rheology and filtration

Iraqi Journal of Chemical and Petroleum Engineering
   Drilling operations in Basra's oil fields, particularly targeting the Dammam, Hartha, and Shuaiba formations, are facing significant challenges related to lost circulation.
Zainab Jawad Aleqabi, Ayad A. Alhaleem A. Alrazzaq, Dennis Delali Kwesi Wayo   +2 more
doaj   +1 more source

Research progress and application prospect of functional adhesive materials in the field of oil and gas drilling and production

Petroleum Exploration and Development, 2023
By summarizing the composition, classification, and performance characterization of functional adhesive materials, the adhesion mechanisms of functional adhesive materials, such as adsorption/surface reaction, diffusion, mechanical interlocking, and ...
Jinsheng SUN, Shaofei LEI, Yingrui BAI, Kaihe LYU, Rongchao CHENG, Huijun HAO, Fan LIU   +6 more
doaj   +1 more source

DataSheet1_Plugging efficiency of flaky and fibrous lost circulation materials in different carrier fluid systems.docx

, 2022
Lost circulation is one of the most significant contributors to wellbore instability and causes an increase in drilling operation costs. It is also a major contributor to the nonproductive time and must be minimized for improved economic and operational ...
Sulaiman A. Alarifi (14250137), Saleh A. Alhaidari (14250134), Abdulaziz Bahamdan (14250140)   +2 more
core   +1 more source

In vitro generation of regulatory T cells: A challenging tool for studying immune aging in humans

FEBS Open Bio, EarlyView.
In vitro induction of human regulatory T cells using standard protocols generates suppressive, Foxp3‐expressing CD4+ T cells independently of TGF‐β supplementation and donor age. Regulatory T (Treg) cells play a key role in immune tolerance and homeostasis.
Lynn Muller, Jana Bleher, Birgit Weinberger, Lourdes Rocamora‐Reverte   +3 more
wiley   +1 more source