Results 41 to 50 of about 998,789 (338)
Shiyou jixieIn drilling engineering， optimized cutter selection for specific formations is critical to enhance rock breaking efficiency. To this end， a Split Hopkinson Pressure Bar （SHPB） apparatus was used to conduct impact-induced rock breaking tests of triangular-
Li Yunzhu +6 more
doaj +1 more source
Open ended tubing cutters [PDF]
, 1981 A self clamping cutting tool which includes a handle attached to a C-shaped housing is described. Rotatably mounted within the housing is a C-shaped tool body carrying a set of clamping rolls, two support rolls, and an edged cutting roll (64).
Girala, A. S.
core +1 more source
, 2021 In micromilling, the performance and diameter of the milling cutter directly determine the service life of the milling cutter and the surface quality of the microgroove.
Chen Jiang +4 more
semanticscholar +1 more source
The newfound relationship between extrachromosomal DNAs and excised signal circles
FEBS Letters, EarlyView.Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley +1 more source
Prediction of wear life of shield disc cutter in complex formations based on genetic programming
Gong-kuang zidonghua, 2018 In process of shield tunneling in complex formation, wear of disc cutter is extremely serious and service life is hard to predict, and influence factors of the disc cutter wear are multi-dimensional and uncertain.
QIAO Jinli +3 more
doaj +1 more source
IGEL: A 3D Shape Modeling Tool Mimicking Heat Cutters
The Journal of the Society for Art and Science, 2008 IGEL is a new shape modeling tool mimicking heat cutters for 3D computer graphics. Heat cutter is a tool for processing styrene form. Since blades of cutters are steal wires, user can freely bend them. IGEL realizes this operation by a sketch input system. IGEL has two different modes, 2D and 3D modes, and users can switch them freely.
Hitomi Imaizumi, Takayuki Itoh
openaire +2 more sources
Delaminated areas beneath organic coating: A local electrochemical impedance approach [PDF]
, 2006 Local electrochemical impedance mapping was used to investigate delamination phenomena at the steel/epoxy-vinyl primer interface. The delamination occurred from an artificial defect(cutter scribing) and from ageing in a salt spray chamber.
Aragon, Emmanuel +3 more
core +1 more source
Molecular Oncology, EarlyView.This study explores salivary RNA for breast cancer (BC) diagnosis, prognosis, and follow‐up. High‐throughput RNA sequencing identified distinct salivary RNA signatures, including novel transcripts, that differentiate BC from healthy controls, characterize histological and molecular subtypes, and indicate lymph node involvement.
Nicholas Rajan +9 more
wiley +1 more source
Cutting of Siliceous Dolomite by Special-Shaped PDC Cutter under Confining Pressure
Shiyou jixieThe dolomite formation is an important field for oil and gas exploration in the future. However， due to the high confining pressure environment in wellbore and the hard-to-drill characteristics of dolomite， traditional planar cutter PDC bit is prone to ...
Tian Wanqing +5 more
doaj +1 more source
Method and apparatus for waste collection and storage [PDF]
, 1991 A method and apparatus are disclosed for collection of fecal matter designed to operate efficiently in zero gravity environment. The system comprises a waste collection area within a body having a seat opening. Low pressure within a waste collection area
Thornton, William E., Jr. +1 more
core +1 more source