Results 21 to 30 of about 55,584 (294)

Experimental Investigation and Numerical Simulation of the Casing-Cement Sheath Interface Debonding During Multi-Stage Fracturing

Shiyou jixie, 2023
The existing research methods are inadequate to accurately characterize the actual casing-cement sheath failure.By combining numerical simulation with laboratory experiment,a test device was developed to measure the casing-cement sheath interface bond ...
Wang Yangang, Feng Yongcun, Deng Jingen, Yan Wei, Li Xiaorong, Zhao Yingxiao   +5 more
doaj  

Law and countermeasures for the casing damage of oil production wells and water injection wells in Tarim Oilfield

Petroleum Exploration and Development, 2011
Based on the analyses of the situation and distribution of casing damage in the Tarim Oilfield, it was considered that there are six major factors causing the casing damage: (1) There are flowing rock or highly permeable formation around the casing; (2 ...
Wang Tao, Yang Shenglai, Zhu Weihong, Bian Wanjiang, Liu Min, Lei Yu, Zhang Yuan, Zhang Jin, Zhao Wei, Chen Lan, Zhou Xiaoping, Liao Jianhua   +11 more
doaj   +1 more source

Effect of a Recirculating Type Casing Treatment on a Highly Loaded Axial Compressor Rotor

International Journal of Turbomachinery, Propulsion and Power, 2019
The tip leakage flow over the blades of an axial compressor rotor adversely affects the axial rotor efficiency and can determine the onset of tip leakage stall.
Motoyuki Kawase, Aldo Rona
doaj   +1 more source

Mechanism of Stability Enhancement with Shallow ‎Reversed Slot-Type Casing Treatment in a Transonic ‎Compressor ‎

Journal of Applied Fluid Mechanics, 2021
In this paper, the influence of a shallow reversed slot-type casing treatment on the performance of a tip-critical transonic compressor has been numerically investigated. Firstly, the complex flow fields in the rotor tip region are studied in details. It
Z. D. Chi, W. L. Chu, H. G. Zhang
doaj  

A Review of New Experimental Technologies for the Development of Advanced Fans with High Bypass Ratio

International Journal of Turbomachinery, Propulsion and Power, 2018
The paper reviews new experimental technologies for the development of advanced fans with high bypass ratios. Most of those developments are carried out in a highly specialized acoustic test facility available at the Central Institute of Aviation Motors (
Victor Mileshin
doaj   +1 more source

A Quality Improvement Initiative to Standardize Pneumocystis jirovecii Pneumonia Prophylaxis in Pediatric Patients With Solid Tumors

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Pediatric patients with extracranial solid tumors (ST) receiving chemotherapy are at an increased risk for Pneumocystis jirovecii pneumonia (PJP). However, evidence guiding prophylaxis practices in this population is limited. A PJP‐related fatality at our institution highlighted inconsistent prescribing approaches and concerns about
Kriti Kumar, Denise M. Connolly, Ellen Kellington, Elyse Zelunka, Karla Kerrigan, Furqan Shaikh, Paul C. Nathan, Meredith S. Irwin, Sarah Cohen‐Gogo   +8 more
wiley   +1 more source

imulation of the flow in the fan stage of a turbofan engine with annular grooves casing treatment

Авіаційно-космічна техніка та технологія
The subject of this study is the working process of the axial fan under the annular groove casing treatment of the turbofan engine. The object of the present study is to investigate the fan impeller of a turbofan engine subjected to an annular groove ...
Andrii Duliepov, Anton Balalaiev
doaj   +1 more source

Pazopanib Combined With Vincristine and Irinotecan in Relapsed Wilms Tumor: Encouraging Outcomes in a Heavily Pretreated Pediatric Cohort

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background While Wilms tumor (WT) typically has a favorable prognosis, relapsed cases—especially those with high‐risk histology—remain therapeutically challenging after intensive frontline therapy. The combination of vincristine and irinotecan has demonstrated activity in pediatric solid tumors, and pazopanib, a multi‐targeted tyrosine kinase ...
Maria Debora De Pasquale, Alessandro Crocoli, Giuseppe Maria Milano, Pierluigi Di Paolo, Francesca Diomedi Camassei, Ida Russo, Annalisa Serra   +6 more
wiley   +1 more source

Numerical Optimization of a Stall Margin Enhancing Recirculation Channel for an Axial Compressor

Fluids, 2019
A proof of concept is provided by computational fluid dynamic simulations of a new recirculating type casing treatment. This treatment aims at extending the stable operating range of highly loaded axial compressors, so to improve the safety of sorties of
Motoyuki Kawase, Aldo Rona
doaj   +1 more source

Bone Marrow Failure as an Underrecognized Feature of KAT6A Syndrome

Pediatric Blood &Cancer, EarlyView.
ABSTRACT KAT6A syndrome (Arboleda–Tham syndrome) is a rare disorder caused by heterozygous pathogenic variants in KAT6A, a histone acetyltransferase essential for chromatin remodeling and hematopoietic stem cell function. While neurodevelopmental features are well established, hematologic manifestations are underrecognized.
Ye Jee Shim, Bruce Crooks, Hyoung Jin Kang, Kyung Taek Hong, Jung Yoon Choi, Hye Ra Jung, Chang Ahn Seol, Rinu Mathew, Yigal Dror   +8 more
wiley   +1 more source