Results 61 to 70 of about 260,516 (241)

Research on disc cutter excavation characteristics for different blade width based on numerical simulations and experiments

工程科学学报
This study addresses the abnormal failures, such as blade fractures and wear, encountered by disc cutters when excavating hard rock with high uniaxial compressive strength.
Yong SHANG, Jingdong SUN, Haifeng JIANG, Shunhai XU, Honglei DUAN, Chaoyang SUN   +5 more
doaj   +1 more source

Geometry and Simulation of the Generation of Cylindrical Gears by an Imaginary Disc Cutter

, 2014
[[abstract]]This paper proposed a method of representing the geometry of an imaginary disc cutter in parameter form. The undercutting condition of the imaginary disc cutter is studied, and the mathematical model of the generated gears is developed by the
Yang, Shyue-Cheng; Liang, Tsang-Lang
core  

A Low Psoas Muscle Index Was Associated With a Poorer Overall Survival in Patients Who Underwent Percutaneous Nephrostomy

Aging and Cancer, EarlyView.
In patients with malignant ureteral obstruction undergoing percutaneous nephrostomy, sarcopenia defined by a low psoas muscle index was independently associated with poor overall survival on multivariate Cox regression analysis, suggesting that preoperative assessment of psoas muscle index may aid prognostic stratification in this population.
Kota Shimokihara, Takashi Kawahara, Kazuhide Makiyama, Hiroji Uemura   +3 more
wiley   +1 more source

Comparing the Effect of Semi‐Immersive Virtual Reality, Computerized Cognitive Training, and Traditional Rehabilitation on Cognitive Function in Multiple Sclerosis: A Randomized Clinical Trial

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Cognitive impairment is a common non‐motor symptom in Multiple Sclerosis (MS), negatively affecting autonomy and Quality of Life (QoL). Innovative rehabilitation strategies, such as semi‐immersive virtual reality (VR) and computerized cognitive training (CCT), may offer advantages over traditional cognitive rehabilitation (TCR ...
Maria Grazia Maggio, Desiree Latella, Lilla Bonanno, Paulo Cezar Rocha dos Santos, Marcos Maldonado‐Díaz, Meir Plotnik, Rosaria De Luca, Angelo Quartarone, Rocco Salvatore Calabrò   +8 more
wiley   +1 more source

Adams modelling of contact forces between disc cutter and mount [PDF]

, 2010
The purpose of this thesis has been to develop a calculation module for use in the simulation software Adams. The calculation module is based on equations found in the literature.
Ericsson, Anders
core   +1 more source

Prodromal Lewy Body Disorder Features in REM Sleep Behavior Disorder With Biomarker‐Defined Synucleinopathy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Isolated rapid eye movement sleep behavior disorder (iRBD) is a prodromal state for Lewy body disorders and exhibits biological heterogeneity that may influence clinical expression and progression. We examined clinical features in individuals with iRBD and biomarker‐defined synucleinopathy.
Daniel Weintraub, Michele K. York, Roseanne Dobkin, Anuprita R. Nair, Ryan Kurth, David‐Erick Lafontant, Chelsea Caspell‐Garcia, Roy N. Alcalay, Ethan G. Brown, Lana M. Chahine, Christopher Coffey, Tatiana Foroud, Douglas Galasko, Karl Kieburtz, Kenneth Marek, Kalpana Merchant, Brit Mollenhauer, Kathleen L. Poston, Andrew Siderowf, Cristina Simonet, Tanya Simuni, Caroline M. Tanner, Thomas F. Tropea, Aleksandar Videnovic, The Parkinson's Progression Markers Initiative   +24 more
wiley   +1 more source

Kinematics Modeling and Analysis of TBM Disc Cutter Based on D-H Matrix

, 2011
The objective of this paper was to study tool wear condition and to guide the cutter configuration by studying the movement of the disc cutter of all-section rock Tunneling Boring Machine(TBM).Through the analysis of rock destruction process by disc ...
Jian Qin Liu, Wei Guo, Y. Pu
core   +1 more source

Sertraline Treatment Can Mimic Niemann‐Pick Type C Biomarker Profile: A Diagnostic Pitfall

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Oxysterols (cholestane‐3β,5α,6β‐triol and 7‐ketocholesterol) and N‐palmitoyl‐O‐phosphocholineserine (PPCS) are sensitive biomarkers for Niemann‐Pick disease type C (NPC) screening. However, false‐positive results occur, with a biomarker profile suggestive of NPC despite the absence of pathogenic variants in genes involved in NPC or ...
Maria Makrygianni, Cecile Pagan, Antony Citterio‐Quentin, Isabelle Rouvet, Giulia Dingeo, Cyril Hanin, Claudine Laurent‐Levinson, Samia Pichard, Bénédicte Héron, Clément Gourguechon, Daniele Mandia, Jerome Guitton, Carole Lacout, Nicolas Schleinitz, Florient Potier, Olivier Flabeau, Elsa Besse‐Pinot, Foudil Lamari, Magali Pettazzoni, Yann Nadjar   +19 more
wiley   +1 more source

Clearance angle and evolution of depth of cut in actuated disc cutting

Journal of Rock Mechanics and Geotechnical Engineering, 2019
This paper investigates the effect of cutter clearance angle on variation of depth of cut and cutting process with an actuated disc cutting (ADC). ADC is a cyclic cutting method with two main characteristics: (i) a disk-shape cutter is used to attack the
Sevda Dehkhoda, Bryce Hill
doaj   +1 more source

Spacing Optimization of the TBM Disc Cutter Rock Fragmentation, Based on the Energy Entropy Method

, 2022
We used the hyperbolic Drucker–Prager and damage-failure models to simulate a three-dimensional rock fragmentation with a tunnel boring machine (TBM) disc cutter through ABAQUS.
Wanli Guo, Danqing Song, Enzhi Wang, Chen Xu, Yujie Zhu, Xiaoli Liu   +5 more
core   +1 more source