Results 41 to 50 of about 3,343 (256)

A Multidimensional Performance Evaluation Method for Blade‑Specialized Five‑Axis Machining Centers

Nanjing Hangkong Hangtian Daxue Xuebao
Machining of aero‑engine blade‑type complex curved‑surface parts places stringent requirements for high accuracy， stability， and efficiency on five‑axis CNC machine tools. To assess the suitability of domestic five‑axis CNC equipment for this application，
LIN Zhiqiang, LU Chengbin, LI Jia, ZHANG Jiacheng, WU Qixun, ZHAO Guolong   +5 more
doaj   +1 more source

Structural and biochemical analysis of a B12 superbinder

FEBS Letters, EarlyView.
BtuG proteins are vitamin B12 scavengers in Bacteroides thetaiotaomicron, a dominant human gut bacterium. We present crystal structures of three BtuG homologs bound to cobalamin and its precursor cobinamide, revealing picomolar binding affinities, among the highest known for any natural protein.
Jose M. Martinez Felices, Jacob J. Whittaker, Dirk J. Slotboom, Albert Guskov   +3 more
wiley   +1 more source

Soft motions encoded by the fold and mediated by conserved hinge sites drive V‐ATPase allosteric machinery and autoinhibition

FEBS Letters, EarlyView.
Vacuolar H+‐ATPase (V‐ATPase) is a multisubunit rotary proton pump that acidifies intracellular compartments. Using elastic network models, we identified conserved hinge residues that govern its large‐scale functional motions. We show that intrinsically encoded ‘soft modes’ drive critical functional transitions, including rotary catalysis and ...
Diksha Parwana, Xiaowei Bogetti, Stuti Sharma, Ivet Bahar   +3 more
wiley   +1 more source

Multi-dimensional force tracking-loading simulator development and simulation experiment for five-axis machining center

Advances in Mechanical Engineering
Aiming at the problems of insufficient loading dimension and difficult engineering application of CNC machine tool reliability test device, a low-cost, recyclable multi-dimensional force tracking-loading simulator is developed based on the conical test ...
Junjian Wang, Xianchao Wang, Jianghong Sun, Qinzhi Zhao, Xiaoan Chen, Naizheng Li, Hui Li, Xiao Yang   +7 more
doaj   +1 more source

Design of motion accuracy measurement device with three displacement sensors for machine tool and comparison of its setting method

Journal of Advanced Mechanical Design, Systems, and Manufacturing, 2014
The standard of test method for five-axis machining center is now under discussion by ISO. In its draft standard, the use of a measurement device with three displacement sensor is described in addition to the ball bar device that is well-known as the ...
Masashi YAMAJI, Naoki HAMABATA, Yukitoshi IHARA   +2 more
doaj   +1 more source

Developmental programmes drive cellular plasticity, disease progression and therapy resistance in lung adenocarcinoma

Molecular Oncology, EarlyView.
This study shows that lung adenocarcinomas exploit developmental branching morphogenesis to acquire a therapy resistant basal‐like tumour cell state. This process was found to be regulated by combined TP53 loss‐of‐function and type‐I interferon signalling, identifying a novel axis for biomarker and therapeutic target discovery.
Kamila J Bienkowska, Stephany Gallardo, Nur S. Zainal, Leena Arora, Matthew Ellis, Maria‐Antoinette Lopez, Judith Austine, Sai Pittla, Serena J Chee, Aiman Alzetani, Emily C Shaw, Christian H Ottensmeier, Gareth J Thomas, Christopher J Hanley   +13 more
wiley   +1 more source

Circulating microRNA signatures of cachexia and cancer in Canis familiaris as a comparative oncology model for human disease

Molecular Oncology, EarlyView.
Circulating microRNAs as biomarkers of cachexia and sex‐specific cancer in senior dogs. In 25 client‐owned dogs, four circulating miRNAs (miR‐15a, miR‐15b, miR‐16, miR‐140) were downregulated in cachexia, with miR‐16 the strongest individual biomarker (AUC = 0.899).
Soon‐Seok Park, Kyongman An, Gyeonghwa Kim, Soo‐Nyun Choi, Hong‐Ki Lee, Keun Hur, Kyu‐Shik Jeong   +6 more
wiley   +1 more source

A geometric error tracing method based on the Monte Carlo theory of the five-axis gantry machining center

Advances in Mechanical Engineering, 2017
This article proposes a tracing method to identify key geometric errors for a computer numerical control machine tool by cutting an S-shaped test piece. Adjacent part relationships and machine tool errors transform relationships are described by topology
Jinwei Fan, Yuhang Tang, Dongju Chen, Changjun Wu   +3 more
doaj   +1 more source

Research on nxug10.0 impeller automatic programming and DMU50 five axis machining center

Journal of Physics: Conference Series, 2021
Abstract Taking nxug10.0 software as the platform and impeller as an example, this paper analyzes the structural characteristics and processing difficulties of impeller, reasonably formulates the NC processing scheme, and uses nxug10.0 impeller processing module to plan the tool path, generate the tool path file, and simulate the ...
Xuanlin Ye, Ji Luo, Wu Zhang, Zou Zou
openaire   +1 more source

Somatostatin receptor 4 (SSTR4) is a tumor suppressor in cutaneous and head & neck squamous cell carcinomas

Molecular Oncology, EarlyView.
This study identifies somatostatin receptor 4 (Sstr4) as a critical tumor suppressor against skin and head/neck cancers (HNSCC, cSCC, and BCC). The loss of Sstr4 removes a check on cell growth, causing hyperactivation of the MAPK‐ERK signaling pathway (↑).
Ali Taqvi, Tuan Khang Huynh, Adway Kadam, Zahra Kardan, Yue Yan, Amina Jamal Laham, Sampath Kumar Loganathan   +6 more
wiley   +1 more source