Results 91 to 100 of about 254,674 (333)

Research on Cutting Load and Heat Generation Law of PDC Wearing Cutter

open access: yesShiyou jixie, 2021
At present, there is no further researches on the cutting load and heat generation of worn PDC cutter under different front rake angles and different wear grades. For this reason, single cutter cutting tests are used to verify the relevant performance of
Zhu Guanghui, Kuang Yuchun, Lin Wei
doaj  

Rock sampling [PDF]

open access: yes, 1971
An apparatus for sampling rock and other brittle materials and for controlling resultant particle sizes is described. The device includes grinding means for cutting grooves in the rock surface and to provide a grouping of thin, shallow, parallel ridges ...
Blum, P.
core   +2 more sources

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

open access: yesMolecular 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   +25 more
wiley   +1 more source

Underwater Video Survey: Planning and Data Processing [PDF]

open access: yes, 2002
The importance of underwater video surveys as an exploration tool has been steadily increasing over recent years [1]. Better photographic equipment, more effective sources of illumination, and improved processing techniques - all make video surveying a ...
Cutter, Randy G, Jr.   +2 more
core   +1 more source

RIPK4 function interferes with melanoma cell adhesion and metastasis

open access: yesMolecular Oncology, EarlyView.
RIPK4 promotes melanoma growth and spread. RIPK4 levels increase as skin lesions progress to melanoma. CRISPR/Cas9‐mediated deletion of RIPK4 causes melanoma cells to form less compact spheroids, reduces their migratory and invasive abilities and limits tumour growth and dissemination in mouse models.
Norbert Wronski   +9 more
wiley   +1 more source

Analysis and Enlightenment on the Relationships between Two Kinds of Cutter Life Evaluation Indexes and Installation Radius: A Case Study

open access: yesBuildings
Accurate evaluation of cutter life at different cutter positions on the cutter head is helpful to determine the time of cutter change and reduce the time of cutter wear measurement, which is of great significance to improve the tunneling efficiency of ...
Jianping Liu   +4 more
doaj   +1 more source

Physical and Mechanical Properties of Palm Oil Frond and Stem Bunch for Developing Pruner and Harvester Machinery Design [PDF]

open access: yes, 2013
A development of oil palm pruner and harvester machinery design implemented in the field still faces a problem due to the lack of effective and efficient design which is need to be solved.
Hamdi, Mayulu   +2 more
core  

COMP–PMEPA1 axis promotes epithelial‐to‐mesenchymal transition in breast cancer cells

open access: yesMolecular Oncology, EarlyView.
This study reveals that cartilage oligomeric matrix protein (COMP) promotes epithelial‐to‐mesenchymal transition (EMT) in breast cancer. We identify PMEPA1 (protein TMEPAI) as a novel COMP‐binding partner that mediates EMT via binding to the TSP domains of COMP, establishing the COMP–PMEPA1 axis as a key EMT driver in breast cancer.
Konstantinos S. Papadakos   +6 more
wiley   +1 more source

Open Access Sugar Cookie Recipe

open access: yes, 2014
A family recipe provided by Janelle Wertzberger, Director of Reference and Instruction. This is the perfect sugar cookie recipe to use with your open access cookie cutter.
Musselman Library,
core  

Покращення якості технології процесу запресовування зубків у шарошки бурових доліт [PDF]

open access: yes, 2017
Аналізом характеру пошкоджень поверхонь отворів виявлені сліди від дії сил стиску що виникають вздовж осі зубка при втисненні його в породу вибою. Також виявлено сліди деформації від дії згину на зубок залежно від орієнтації його ковзання по вибою ...
Сліпчук, Андрій Миколайович   +1 more
core  

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