Results 21 to 30 of about 243,051 (307)
MethodsX, 2023 Cutter wear is one of the key factors influencing construction efficiency during shield tunnelling. Prediction of cutter wear can improve construction efficiency by reducing the times of cutter inspections in engineering practice.
Nan Zhang, Lin-Shuang Zhao
doaj +1 more source
, 1972 Replacement of opposing smooth rollers with appropriately grooved rollers in manual tubing cutter allows smooth severance of tubing of different diameters and eliminates raised lip around cut ...
Giandomenico, A.
core +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background and Aims Wilms tumour (WT) has excellent event‐free and overall survival (OS). However, small differences exist between countries participating in the same international study. This led us to examine variation in adherence to protocol recommendations as a potential contributing factor.
Suzanne Tugnait +23 more
wiley +1 more source
THE INCREASE IN DRILLING DURABILITY OF TRICONE BITS
Известия высших учебных заведений: Нефть и газ, 2018 The process of location error the bit in the chuck was verified experimentally and put into production by measuring the gap between the working surface of the limiting ring and the calibrating surface of the cutter to improve the accuracy of the bit ...
M. Ya. Habibullin +2 more
doaj +1 more source
, 1975 An adjustable hole cutter is described for use in forming circular openings in workpieces. The hole cutter is characterized by a mount of a substantially planar configuration, positionable into a plane paralleling the working plane of a selected ...
Newby, D. T., Thornton, G. E.
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Pediatric Blood &Cancer, EarlyView.ABSTRACT Background Kaposiform lymphangiomatosis (KLA) is an aggressive complex lymphatic anomaly. Patients exhibit malformed lymphatic vessels and often develop hemorrhagic effusions and elevated angiopoietin‐2 (Ang‐2) levels. A somatic NRAS p.Q61R (NRASQ61R) mutation has been associated with KLA.
C. Griffin McDaniel +3 more
wiley +1 more source
Pediatric Blood &Cancer, EarlyView.ABSTRACT Background The management of clinically apparent single lesions or oligofocal nephroblastomatosis, a facultative precursor of nephroblastoma, remains debated. Methods We retrospectively analyzed 37 patients with clinically apparent single or oligofocal nephroblastomatosis (two to three lesions per kidney) among 2347 patients registered between
Nils Welter +17 more
wiley +1 more source
Rock Breaking Simulation and Optimization of PDC Bit for Jimsar Shale Formation
Shiyou jixieConventional planar-cutter PDC bit exhibits prominent problems in drilling， such as severe wear， frequent cutter breakage and short footage， resulting in low drilling efficiency and high cost. To improve the drilling speed and reduce the drilling cost in
Zang Chuanzhen
doaj +1 more source
Energies, 2022 The Permian igneous rock in Shunbei Oilfield exhibits high rock strength, which results in a low rate of penetration (ROP) and shortens the cutter’s service life. It is necessary to analyze and evaluate the rock breaking effect of cutters.
Zhuoxin Dong +6 more
doaj +1 more source
Investigating the performance of TiN and TiAIN coatings on milling cutter used for machining bimetal steel strip [PDF]
, 2009 Surface engineering of cutting tools (single point or multipoint) through advanced coatings (e.g., TiN) has contributed towards considerable improvement of tool life, productivity and machining quality [1] by modifying the tool substrate.
Haider, Julfikar, Sarwar, Mohammed
core