Results 81 to 90 of about 860,603 (418)

Countermeasures to Decrease Water Cut and Increase Oil Recovery from High Water Cut, Narrow-Channel Reservoirs in Bohai Sea

Geofluids, 2021
Most multilayer sandstone reservoirs in the Bohai Sea have already entered the middle or high water cut production stage with large amounts of remaining oil being scattered distributed. Therefore, there is an urgent need to find a suitable countermeasure
Gaocheng Feng, Yuhui Zhou, Weiying Yao, Lingtong Liu, Zhao Feng, Yanjun Yi, Yi Feng   +6 more
doaj   +1 more source

Test well exploration in the Myakka River Basin area, Florida [PDF]

, 1967
In recent years, difficulties encountered in obtaining ground-water supplies with acceptable chemical characteristics in the Myakka River basin area led to the implementation of a test drilling program.
Joyner, B. F., Sutcliffe,, H.
core  

Effect of pH on Rheological and Filtration Properties of Water-Based Drilling Fluid Based on Bentonite

, 2019
The design of drilling fluids is very important for the drilling operation success. The rheological properties play a key role in the performance of the drilling fluid.
H. Gamal, Salaheldin Elkatatny, Salem Basfar, Abdulaziz Al-Majed   +3 more
semanticscholar   +1 more source

Exploring surface‐guided systems for intelligent breathing‐adapted four‐dimensional computed tomography: A comparison to infrared‐based reflective marker systems

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose This study evaluates the technical feasibility of adapting a surface monitoring system, designed for conventional four‐dimensional computed tomography (4DCT), to an intelligent, breathing‐adapted 4DCT and examines its potential to expand the currently limited range of supported surrogate systems.
Niklas Lackner, Andre Karius, Rainer Fietkau, Christoph Bert, Juliane Szkitsak   +4 more
wiley   +1 more source

Presidential Power in Foreign Policy: Richard Nixon and the Era of Détente with the Soviet Union and China [PDF]

, 2016
This project analyzes the role and limits of the presidential policy-making in foreign policy through an examination of President Richard Nixon’s policy of détente with the Soviet Union and China during the 1960s and 1970s.
Drilling, Gregory Donald
core   +1 more source

Improvement of hole drilling technology for ore drawing intensification [PDF]

, 2018
Purpose. The improvement of hole drilling for increasing the mineral recovery ratio by ore drawing improvement through blasting. Methods. The drilling parameters were examined for rock dumps.
Gaponenko, I, Golik, V, Morkun, N, Morkun, V   +3 more
core   +1 more source

Geometric and dosimetric evaluation of a commercial AI auto‐contouring tool on multiple anatomical sites in CT scans

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Current radiotherapy practices rely on manual contouring of CT scans, which is time‐consuming, prone to variability, and requires highly trained experts. There is a need for more efficient and consistent contouring methods. This study evaluated the performance of the Varian Ethos AI auto‐contouring tool to assess its potential integration into
Robert N. Finnegan, Alexandra Quinn, Patrick Horsley, Joseph Chan, Maegan Stewart, Regina Bromley, Jeremy Booth   +6 more
wiley   +1 more source

Development of a generic focal spot measurement method suitable for bore‐type linacs

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose In linear accelerators, deviations in the x‐ray focal spot position significantly affect the accuracy of radiation therapy. However, as the focal spot position in bore‐type linac systems such as the Radixact system, cannot be assessed using conventional methods, a new evaluation method is required.
Hidetoshi Shimizu, Kazuharu Nishitani, Tomoki Kitagawa, Koji Sasaki, Takahiro Aoyama, Takeshi Kodaira   +5 more
wiley   +1 more source

Evaluation of the system accuracy of frameless stereotactic radiosurgery using a combination of cone beam CT, six degrees of freedom couch, and surface image‐guided systems

Journal of Applied Clinical Medical Physics, EarlyView.
Abstract Purpose This study aims to evaluate the accuracy of the frameless linear accelerator‐based stereotactic radiosurgery (FSRS) system incorporating cone‐beam CT (CBCT), six degrees of freedom (6‐DoF) couch, room laser, and surface image‐guided (SG) systems.
Hao‐Wen Cheng, Jonathan Li, Sheng‐Hsuan Sun, Guanghua Yan, Chihray Liu   +4 more
wiley   +1 more source

Metal drilling with portable hand drills [PDF]

, 1970
Study of metal drilling solves problems of excessive burring, oversized holes, and out-of-round holes. Recommendations deal with using the proper chemical coolants, applying the coolants effectively, employing cutting oils, and dissipating the heat ...
Edmiston, W. B., Harrison, H. W., Morris, H. E.   +2 more
core   +1 more source