Results 31 to 40 of about 825,254 (265)

Study of the Micropore Structure and Tribological Properties of PTFE-Modified Porous Polyimide

Lubricants
To address the challenges of regulating micropore properties and improving the tribological performance of porous polyimide (PPI), PPI/PTFE composites were fabricated via cold pressing–sintering.
Xiaobo Sun, Xiaohui Shang, Yuanyuan Li, Xiaoya Zhang, Fei Chen, Keying Li, Ke Yan   +6 more
doaj   +1 more source

Cage stability of ball bearings under variable working conditions

工程科学学报, 2019
The momentum wheel is a key device used for orbiting satellite attitude control. Its controlling accuracy is strongly influenced by the cage stability of the ball bearings in momentum wheels.
Zhi-qiang ZHANG, Li-qin WANG, Chuan-wei ZHANG, Yu-meng ZHANG, Le GU   +4 more
doaj   +1 more source

The Role of Hematopoietic Cell Transplantation in Ataxia‐Telangiectasia

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Ataxia‐telangiectasia (A‐T) is a DNA repair disorder characterized by neurodegeneration, immunodeficiency, and cancer predisposition. Hematopoietic cell transplantation (HCT) is an established therapy in related disorders such as Fanconi anemia (FA) and Nijmegen breakage syndrome (NBS), but its role in A‐T is unclear.
Laila Alkhouli, Seth Rotz, Masatoshi Takagi, Richa Sharma   +3 more
wiley   +1 more source

Strengthening Characteristics of Bottom Expansion and Backfilling Anchoring in Fractured Surrounding Rock Roadways

Advances in Civil Engineering
The weak anchoring force and inadequate stability of the anchoring system (AS) in fractured rock roadways frequently lead to anchor rod slip failures.
Shuai Wang, Hua Nan, Gang Jing, Jingkai Li, Leilei Zhao, Liqiang Ma, Weiguang Zhang   +6 more
doaj   +1 more source

Increased Risk of Sarcomas in Children With Congenital Anomalies: Findings From the Genetic Overlap Between Anomalies and Cancer in Kids (GOBACK) Registry Linkage Study

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Background Pediatric sarcomas are a heterogeneous group of tumors that contribute disproportionately to cancer mortality in children. Although congenital anomalies are among the strongest known risk factors for childhood cancer, the risk of specific sarcoma subtypes among affected individuals has not yet been thoroughly evaluated. Procedure We
Russ Wolters, Ji Yun Tark, Tiffany M. Chambers, Tania A. Desrosiers, Michael E. Scheurer, Charles Shumate, Wendy N. Nembhard, Mahsa M. Yazdy, Eirini Nestoridi, Amanda E. Janitz, Jean Paul Tanner, Russell S. Kirby, Jason L. Salemi, Yao Yu, Chad D. Huff, Sharon E. Plon, Philip J. Lupo, Jeremy M. Schraw   +17 more
wiley   +1 more source

Rapid solution for analysis of nonlinear fluid film force and dynamic behavior of a tilting-pad journal bearing-rotor system with turbulent and thermal effects

Friction, 2019
To analyze the nonlinear dynamics of a tilting-pad journal bearing (TPJB)-rotor system with high accuracy and speed, the database method (DM) is modified to rapidly determine the nonlinear fluid film force (NFFF) of a TPJB while considering turbulent and
Yingze Jin, Zhaoyang Shi, Xiaojing Zhang, Xiaoyang Yuan   +3 more
doaj   +1 more source

Influence of Fit Clearance and Tightening Torque on Contact Characteristics of Spindle–Grinding Wheel Flange Interface

Machines, 2022
The spindle and grinding wheel flange (GWF) adopt double positioning of a tapered surface and end face. Due to the processing quality, the contact state of the spindle–GWF interface cannot be determined accurately.
Qianqian Yuan, Yongsheng Zhu, Ke Yan, Xinzhuo Zhang   +3 more
doaj   +1 more source

Establishing an Apheresis Medicine Program in a Resource‐Constrained Setting: A 5‐Year Experience From Lagos, Nigeria

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Establishing a comprehensive apheresis medicine program in a resource‐constrained setting presents significant structural, financial, and logistical challenges. Despite the growing clinical importance of apheresis services globally, published experience from sub‐Saharan Africa remains sparse.
Folasade Adelekan‐Popoola, Shakirat Gold‐Olufadi, Olufunto Olufela Kalejaiye, Abdullateef Ogala, Rasheed A. Balogun   +4 more
wiley   +1 more source

Bulk-cusp microstructure for controllable multi-directional liquid spreading

Nature Communications
Controllable wetting of liquid on solid surface is meaningful for advanced science and engineering. Current researches about controllable liquid spreading are generally limited to unidirectional modes, while achieving multi-directional spreading on ...
Songjie Dai, Hui Zhang, Yang Liu, Fenghao Yi, Kaibin Shi, Guangneng Dong   +5 more
doaj   +1 more source

Research on the Nonlinear Stiffness Characteristics of Double-Row Angular Contact Ball Bearings under Different Working Conditions

Lubricants, 2023
To study the variation rules of nonlinear stiffness of double-row angular contact ball bearings (DR-ACBB), this paper proposed a general mathematic model for DR-ACBB under three different configurations based on the improved quasi-static model of ball ...
Bin Fang, Jinhua Zhang, Jun Hong, Ke Yan
doaj   +1 more source