Results 101 to 110 of about 6,355,244 (249)

Transmission error analysis of cycloidal reducers considering crank bearings and output shaft pins

Jixie chuandong
ObjectiveThe transmission error is a critical performance indicator in the design of cycloidal pin wheel reducers. The influence of design parameters for crank bearings and output shaft pins on this error is frequently neglected in existing research.
XIA Xiaotian, HAN Ju
doaj  

Failure mechanism study of multi-hierarchy pre-tightening tooth connection based on an optimization-driven design approach

Science and Engineering of Composite Materials
The bio-inspired multi-hierarchy fractal design of composite Pre-Tightening Tooth Connections (PTTC) offers significant potential to enhance their load-bearing capacity.
Wang Chen, Zhu Yong-Cheng, Li Fei, Lan Hai, Zhao Qi-Lin, Chen Ming-Zhao, Che Shuang   +6 more
doaj   +1 more source

Flexible Direct‐Conversion X‐Ray Detectors: From Emerging Materials to Conformal Imaging

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This comprehensive review analyzed the performance, challenges, and future directions of four emerging material systems for next‐generation flexible direct‐conversion X‐ray detectors: organic semiconductors, perovskites, metal–organic frameworks, and inorganic metal compounds.
Haipeng Di, Guoliang Ma, Jiaxin Mu, Kailian Dong, Haibin Li, Manjing Wang, Xin Song, Haojin Li, Jianwei Xu, Yiying Zhao, Jingjing Zhao, Guojia Fang   +11 more
wiley   +1 more source

Mechanical analysis and structural optimization of anchorage for split segment inserted tooth slips

Petroleum Research
To meet the operational requirements of slip-type packers within TP140V casing in ultra-deep wells and enhance the anchoring performance and load-bearing capacity of the packer's anchoring mechanism during setting, this paper focuses on the study of ...
Zhongzhi Hu, Kaixin Lv, Xiang Gao, Zhilin Ye, Tiejun Lin   +4 more
doaj   +1 more source

Current Evidence on Best Practice Dental Survivorship Care for People With Head and Neck Cancer: An Overview of Systematic Reviews and Emerging Evidence

Head &Neck, EarlyView.
ABSTRACT Introduction Head and neck cancer (HNC) survival is improving, increasing the need to address long‐term survivorship issues. Dental survivorship—care before, during, and after treatment—remains inconsistent across services. We conducted a review of systematic reviews and emerging evidence to inform contemporary dental survivorship care for HNC
David G. Tighe, Rebecca Venchiarutti, Isidoro Ruisi, Purnima Sundaresan   +3 more
wiley   +1 more source

A Numerical Study of the Sealing and Interstage Pressure Drop Characteristics of a Four-Tooth Three-Stage Brush Combination Seal

Applied Sciences
Premature seal failure induced by the unevenness of interstage pressure distribution in multi-stage brush seals significantly compromises the sealing efficiency of Air-Turbo Rocket (ATR) engines operating under high-pressure (megapascal-level ...
Chao Gu, Yingqun Ma, Wei Zhao, Xiuming Sui, Bin Hu, Qingjun Zhao   +5 more
doaj   +1 more source

Validation of Virtual Reality Simulations for Anatomical Landmarks in Panoramic Radiographs

Journal of Dental Education, EarlyView.
ABSTRACT Objective This study assessed the validity of panoramic anatomical virtual reality (VR) software among senior dental students. Materials and Methods A total of 79 fourth‐year dental students were randomly divided into two groups in this crossover study. Students’ knowledge of panoramic anatomical landmarks was tested.
Daniah M. Alhazmi, Sarah Alnamlah, Noura Alsufyani, Asma'a Faden, Fatima M. Jadu   +4 more
wiley   +1 more source

A gear grinding allowance stochastic simulation model

Advances in Industrial and Manufacturing Engineering
The paper proposes a method and technique that allow, using a minimum sample (3 units) from a batch (30 units) of real gears, to obtain stochastic information about the actual distribution of the gear grinding allowance both on the left and right flanks ...
Natalia Lishchenko, Vasily Larshin, Garret O'Donnell   +2 more
doaj   +1 more source

Teaching of Engine‐Driven Root Canal Treatment Globally—A “Questionnaire Based” Study

Journal of Dental Education, EarlyView.
ABSTRACT Objectives The teaching of root canal therapy, particularly engine‐driven root canal preparation, varies across dental schools. Therefore, this qualitative, questionnaire‐based study aimed to identify preferred engine‐driven endodontic systems at top‐ranked dental universities and to explore the reasons behind their selection.
Shekhar Bhatia, Junpeng Zachary Tan, Pranav Yellore, Ebrahim Khanbhai, Wade Hsu, Ove A. Peters   +5 more
wiley   +1 more source

Analysis and suppression of vibration characteristics of interior-type fractional-slot direct-drive permanent magnet motors

Jixie qiangdu
ObjectiveTo suppress electromagnetic vibration and improve the operational smoothness of an internal fractional-slot direct-drive permanent magnet synchronous motor (PMSM), an electromagnetic vibration suppression scheme based on auxiliary slots in the ...
QIAO Zhanquan, ZHANG Liyong, WANG Guanbo, YU Feipeng, FAN Ruili, LIU Yang, WANG Changlu, TANG Juan, JIANG Yehu, WANG Jing   +9 more
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