Results 81 to 90 of about 154,747 (344)
Pediatric Blood &Cancer, EarlyView.ABSTRACT Introduction Neuroblastoma (NB) with central nervous system (CNS) metastases is rare at diagnosis, but occurs more often during relapse/progression. Patients with CNS metastases face a dismal prognosis, with no standardized curative treatment available.
Vicente Santa‐Maria Lopez +13 more
wiley +1 more source
Shiyou jixie, 2016 Casings in buildup section of horizontal wells are prone to safety accidents like rupture or collapse under the joint effect of bending,shear and extrusion load.In view of this,a mechanical model of casing in the buildup section is established according ...
Xu Dekui +4 more
doaj
Calculation and Analysis on Mechanical Properties of the Perforated Offshore Casing with Defects
Journal of Marine Science and EngineeringPerforation, a common well completion method in oil and gas exploitation, introduces structural defects in casings that alter their mechanical properties.
Zhiqian Xu +4 more
doaj +1 more source
Finite Element Analysis on Stress of L80-1 Grade Casing under Complex Load
Shiyou jixie, 2021 In order to study the collapsing strength of oil casing under the condition of nonuniform distributed ground stress, taking the L80-1 grade casing as the research object, this paper built a casing-cement sheath-formation system model, then, applied ...
Li Chengxiang +3 more
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Case history: more than a beauty case! [PDF]
Netherlands Heart Journal, 2008 Case histories form a substantial element of the medical literature. However, due to their inherent anecdotal and observational nature, the description of an individual patient report is hardly considered to contribute to evidence-based medicine. For these reasons, some journals even exclude case histories from publication. Is this a good policy? In my
openaire +2 more sources
Pathogenic Germline PALB2 and RAD50 Variants in Patients With Relapsed Ewing Sarcoma
Pediatric Blood &Cancer, EarlyView.ABSTRACT Approximately 10% of patients with Ewing sarcoma (EwS) have pathogenic germline variants. Here, we report two cases: first, a novel germline pathogenic variant in partner and localizer of BRCA2 (PALB2) in a patient with a late EwS relapse. Its impact on homologous recombination is demonstrated, and breast cancer risk is discussed.
Molly Mack +12 more
wiley +1 more source
Effect of casing treatment of overall performance of axial-flow transonic fan stage with pressure ratio of 1.75 and tip solidity of 1.5 [PDF]
The effect of a number of casing treatments on the overall performance of a 1.75-pressure-ratio, 423-m/sec-tip-speed fan stage was evaluated. The skewed slot configuration with short-open slots over the midportion of the rotor had a stall margin of 23.5 ...
Moore, R. D., Osborn, W. M.
core +1 more source
New method used to fabricate light-weight heat exchanger for rocket motor [PDF]
, 1964 A grooved capstrip, to straddle the metal edges of regenerative cooling channels, increases the strength and heat transfer characteristics of lightweight motor cases. This capstrip is so designed as to form a firm joint between the channels that form the
Baehr, E. F.
core +1 more source
Study on Cement Sheath Integrity in Shale Formation Fracturing Process
Shiyou jixie, 2017 To give a precise insight into the stress of cement sheath during multistage fracturing, based on the step-by-step finite element method, a finite element transient analysis model of casing-cement sheath-formation considering shale anisotropy has been ...
Fan Mingtao, Li Jun, Liu Gonghui
doaj
Influence of Fault Activation on Casing in Fracturing Operation
Shiyou jixie, 2023 The large-scale implementation of multi-stage fracturing in horizontal wells often causes fault activation and slippage, and then results in casing deformation or damage.Finally, the numerical simulation method was used to analyze the mechanical ...
Zhang Quansheng +6 more
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