Results 51 to 60 of about 243,051 (307)

Influence of Cutting Angle on Temperature Distribution of Cutter

Shiyou jixie, 2021
The failure of cutter is closely related to cutting temperature, and the formation of cuttings has an impact on the performance and life of cutter. This article builds a rock-breaking mechanics model to conduct numerical simulation analysis on rock ...
Zhang Zaixing, Zhou Qin, Zhang Kai, Li Long, Li Yao   +4 more
doaj  

Study on design of taper shaped skiving cutters for internal gears (Taper shaped cutter ground with trapezoidal wheels used for pinion cutter grinding)

Nihon Kikai Gakkai ronbunshu, 2017
Taper shaped skiving cutters are commonly used in gear skiving because they provide clearance angles under a simple gear arrangement and they could have lower cutting resistance than cylindrical skiving cutters. Their tooth flanks are generally ground by
Koichiro URIU, Tsukasa OSAFUNE, Takanori MURAKAMI, Morimasa NAKAMURA, Daisuke IBA, Masami FUNAMOTO, Ichiro MORIWAKI   +6 more
doaj   +1 more source

Design of a New TBM Integrated Cutter System Based on Analysis of Mechanical Properties and Dynamic Characteristics

Applied Sciences, 2022
During the rock-breaking process, severe vibration frequently leads to cutter system failures. The traditional cutter system is complicated in structure, and the cutter-changing operation is highly dependent on the manual operation, resulting in a low ...
Fan Yang, Tian Lan, Junzhou Huo, Yiting Shi, Hao Chen   +4 more
doaj   +1 more source

Foam-machining tool with eddy-current transducer [PDF]

, 1975
Three-cutter machining system for foam-covered tanks incorporates eddy-current sensor. Sensor feeds signal to numerical controller which programs rotational and vertical axes of sensor travel, enabling cutterhead to profile around tank ...
Copper, W. P.
core   +1 more source

A Novel Device for Bursting Shock-Tube Diaphragms [PDF]

, 1961
The new GALCIT 17-in. low-pressure shock tube is equipped with a novel device which was designed to overcome some of the difficulties encountered in attempting to precisely select and control the bursting pressure of very thin diaphragms. This device is
Baganoff, D., Roshko, A.
core   +1 more source

Subtype‐specific enhancer RNAs define transcriptional regulators and prognosis in breast cancers

Molecular Oncology, EarlyView.
This study employed machine learning methodologies to perform the subtype‐specific classification of RNA‐seq data sets, which are mapped on enhancers from TCGA‐derived breast cancer patients. Their integration with gene expression (referred to as ProxCReAM eRNAs) and chromatin accessibility profiles has the potential to identify lineage‐specific and ...
Aamena Y. Patel, Peyman Zarrineh, Nathnael T. Tuffa, Jigar H. Sheth, Sumitra Mohan, Mudassar Iqbal, Sankari Nagarajan   +6 more
wiley   +1 more source

Study on the Cutter–Granite Interaction Mechanism in High-Temperature Geothermal Wells

Energies
In high-temperature geothermal wells, the formation usually has extremely high abrasiveness, hardness, and temperature, which pose severe challenges to drilling tools.
Yan Yang, Dongdong Song, Kuilin Huang, Haitao Ren, Yingxin Yang, Shunzuo Qiu, Zequan Huang   +6 more
doaj   +1 more source

Genetic attenuation of ALDH1A1 increases metastatic potential and aggressiveness in colorectal cancer

Molecular Oncology, EarlyView.
Aldehyde dehydrogenase 1A1 (ALDH1A1) is a cancer stem cell marker in several malignancies. We established a novel epithelial cell line from rectal adenocarcinoma with unique overexpression of this enzyme. Genetic attenuation of ALDH1A1 led to increased invasive capacity and metastatic potential, the inhibition of proliferation activity, and ultimately ...
Martina Poturnajova, Zuzana Kozovska, Ondrej Pos, Kristina Pavlov, Sachin Gulati, Peter Makovicky, Kristina Jakic, Monika Burikova, Eva Sedlackova, Barbora Svitkova, Silvia Tyciakova, Vojtech Bystry, Nicolas Blavet, Boris Tichy, Matej Hrnciar, Jaroslav Budis, Miroslav Tomas, Peter Dubovan, Georgina Kolnikova, Veronika Repaska, Nikoleta Mojzesova, Eva Zomborska, Daniel Pindak, Michal Mego, Tomas Szemes, Miroslava Matuskova   +25 more
wiley   +1 more source

Field Application of Outer Hanging Subsea Casing Cutting and Retrieving Tool for Deepwater Well Abandonment

Shiyou jixie, 2018
For the offshore well with a water depth of less than 800 m, the subsea wellhead system must be cut and recovered approximately 4 m under the mud line when the well is permanently abandoned, which is a key part of the permanent well abandonment operation.
Sun Zigang, Huang Xiaolong, Tong Wujun, Zhao Suwen, Li Jian   +4 more
doaj  

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

Molecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson, Lyanne Delgado‐Coka, Natalia Marchenko, Luisa F. Escobar‐Hoyos, Kenneth R. Shroyer, Alisa Yurovsky, Trey Ideker, Gábor Balázsi, Thomas MacCarthy, Scott Powers   +9 more
wiley   +1 more source