Results 21 to 30 of about 61,603 (268)

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

Cejing 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, WU Qinqin, JIANG Liming, SUN Xuekai, ZHAO Zimeng, ZHANG Ran, ZHANG Li, ZHANG Jiaqing   +7 more
doaj   +1 more source

Design and Application of Type 20 Quick Assembly Setting Tool

Cejing jishu, 2023
Plug setting tool is one of the key tools for plug and perforating operation in unconventional oil and gas reservoirs such as shale gas and tight sand gas. With the development of multistage fracturing volume stimulation techniques for unconventional oil
LU Yinghui, TANG Kai, LI Benchi, REN Guohui, NIE Jingwen, NIE Huafu   +5 more
doaj   +1 more source

Application of the Shift-Subtract Method in the Drilling Fluid Pressure Wave Signal Processing

Cejing jishu
To address the technical challenges of low signal-to-noise ratio and high decoding error rates in high-rate (rate≥10 bit/s) conditions for downhole continuous wave transmission systems, research is conducted on fluid pressure wave signal processing and ...
LIANG Yao, CHEN Guoxing, SONG Sen, LI Anzong, CHEN Wenhui, GUO Yixiao, FAN Xiaowen, LIU Yang   +7 more
doaj   +1 more source

Effect Evaluation and Research of Bidirectional Shock Absorber Based on Measured Frequency of Downhole Perforation Detonation Wave

Cejing jishu, 2023
In the combined operation of tubing conveyed perforation (TCP) and drill stem test (DST), the perforator generates strong shock and vibration waves during perforation, which propagate around the explosion point through the connection link of the pipe ...
LI Benchi, TANG Kai, LU Yinghui, LUO Miaozhuang, CHEN Huabin, HUANG Renguo   +5 more
doaj   +1 more source

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

Cejing 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, SONG Yantuo, JIANG Yinghui, JIAO Libo   +3 more
doaj   +1 more source

Long‐Term Outcomes of Patients With Relapsed/Refractory Neuroblastoma Treated on ANBL1221: A Report From the Children's Oncology Group

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Results of COG ANBL1221 changed treatment paradigms for patients with relapsed/refractory neuroblastoma. Chemoimmunotherapy with irinotecan/temozolomide/dinutuximab is now used as both bridge therapy following suboptimal response to induction and as treatment in first relapse.
Elizabeth Sokol, Arlene Naranjo, Lulu Chen, Rajen Mody, Steven G. DuBois, Rochelle Bagatell, Navin Pinto   +6 more
wiley   +1 more source

BMT4me En Español: Multisite Feasibility and Usability Testing of a Spanish‐Language mHealth Adherence Support App for Spanish‐Speaking Caregivers of Children After Hematopoietic Stem Cell Transplantation and Cancer Treatment

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Medication nonadherence during the first 100 days after pediatric hematopoietic stem cell transplantation (HSCT) and during oncology treatment increases risk for complications. BMT4me is a caregiver‐facing mobile health (mHealth) application providing medication reminders, symptom tracking, and note‐taking features to support ...
Micah A. Skeens, Madeline R. Peek, Bianca Franklin, Emre Sezgin, Melissa Beauchemin   +4 more
wiley   +1 more source

Method for Evaluating Formation Fracturing Effect Utilizing Array Acoustic Logging

Cejing jishu
Fracturing of unconventional oil and gas reservoirs is an effective means to increase oil and gas recovery rate of tight reservoirs. It is also an important part of subsequent exploration and development of oil and gas fields.
LI Siyi, CHEN Wenhui, SUN Xuekai, JIANG Liming, GOU Yanhong, SUN Hao, SHI Peng, WEN Rou   +7 more
doaj   +1 more source

Log-concavity and strong log-concavity: A review

Statistics Surveys, 2014
We review and formulate results concerning log-concavity and strong-log-concavity in both discrete and continuous settings. We show how preservation of log-concavity and strongly log-concavity on $\mathbb{R}$ under convolution follows from a fundamental monotonicity result of Efron (1969).
Saumard, Adrien, Wellner, Jon A.
openaire   +4 more sources

Measurable Residual Disease Monitoring During Treatment for Pediatric Acute Myeloid Leukemia in First Relapse

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Survival after relapse in pediatric acute myeloid leukemia (AML) remains poor, highlighting the critical importance of identifying prognostic factors to guide optimal relapse management. Methods We investigated the prognostic impact of multiparameter flow cytometry (MFC) measurable residual disease (MRD) in 188 patients with first ...
Camilla Poulsen, Kristian Juul Sandahl, Lene Karlsson, Jonas Abrahamsson, Nira Arad‐Cohen, Daniel Cheuk, Barbara De Moerloose, Linda Fogelstrand, Jose Maria Fernandez Navarro, Bianca F. Goemans, Kirsi Jahnukainen, Gertjan Kaspers, Zhanna Kovalova, Monica Cheng Munthe‐Kaas, Ulrika Norén‐Nyström, Josefine Palle, Ramune Pasauliene, Cornelis Jan Pronk, Kadri Saks, Anne Tierens, Henrik Hasle, Kristian Løvvik Juul‐Dam   +21 more
wiley   +1 more source