Results 21 to 30 of about 73,951 (219)

Drilling Technology of Torsional Impact Rotary Reaming in Underground Coal Mine

open access: yesMeikuang Anquan, 2020
According to the reaming requirement for large diameter directional drilling in hard rock of coal mine roof, the drilling technology of torsional impact rotary reaming is put forward. Based on the simulation results of FLUENT finite element software, the
ZHAO Jianguo
doaj   +1 more source

Numerical study to predict optimal configuration of wavy fin and tube heat exchanger with various tube shapes

open access: yesRevue des Énergies Renouvelables, 2022
This paper aims to investigate the influence of tube shapes on thermal-flow characteristics of sinusoidal wavy finned-tube heat exchangers. Two row staggered bundle with six geometries of tubes (four flat tube geometries, one oval tube and a circular ...
Farouk Tahrour   +3 more
doaj   +1 more source

Multiomic single cell sequencing identifies stemlike nature of mixed phenotype acute leukemia

open access: yesNature Communications
Despite recent work linking mixed phenotype acute leukemia (MPAL) to certain genetic lesions, specific driver mutations remain undefined for a significant proportion of patients and no genetic subtype is predictive of clinical outcomes.
Cheryl A. C. Peretz   +21 more
doaj   +1 more source

Nanoparticles in the turbulent flow behind the backward step by Eulerian-Lagrangian method [PDF]

open access: yesمهندسی مکانیک شریف
Turbulent backward step flow, including air and copper nanoparticles, has been simulated using the Computational Fluid Dynamics (CFD) method by the Eulerian-Lagrangian method.
A. Farrokh, Miralam M.
doaj   +1 more source

Re‐Irradiation in Pediatric Diffuse Midline Glioma: A Multi‐Institutional Retrospective Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Children with recurrent diffuse midline gliomas (DMGs) have limited therapeutic options at recurrence. Re‐irradiation (RT2) may be used at progression, but with uncertainty about the benefit. Methods We conducted a multi‐institutional retrospective study of children aged < 18 with DMG treated at three centers (Toronto, Canada ...
Ajay Thomas Alex   +13 more
wiley   +1 more source

Optimizing Different Angles of Venturi in Biodiesel Production Using CFD Analysis [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2019
The purpose of this paper is to find the optimal geometry of Venturi for the production of biodiesel by hydrodynamic cavitation. Intensive methods such as hydrodynamic cavitation eliminate the limitation of mass transfer in the transesterification ...
Hamid Reza Chitsaz   +3 more
doaj  

Infant Embryonal CNS Tumors: Molecular Insights and Treatment Considerations for Contemporary Pediatric Neuro‐Oncology

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Embryonal tumors comprise the majority of malignant central nervous system (CNS) neoplasms diagnosed in children under 3 years of age. Compared with their counterparts in older children, these tumors exhibit distinct molecular biology and a more aggressive clinical phenotype, while their management is complicated by the heightened ...
Sudarshawn Damodharan   +3 more
wiley   +1 more source

Reperfusion‐Dependent Outcomes After Endovascular Thrombectomy Stratified by NIHSS‐ASPECTS Clinical‐Core Mismatch

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective This analysis evaluates the effect of successful reperfusion on functional outcomes after MT, stratified by admission National Institutes of Health Stroke Scale (NIHSS) and Alberta Stroke Program Early CT Score (ASPECTS) as surrogates for clinical‐core mismatch, using multicenter registry data.
Felix Schlicht   +53 more
wiley   +1 more source

CSF Monoamine Metabolites and Cognitive Trajectory in Early Parkinson's Disease

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background Imaging and postmortem studies indicate that abnormalities in monoaminergic neurotransmission contribute to cognitive impairment in Parkinson's disease (PD). However, it remains uncertain if cerebrospinal fluid (CSF) monoamine metabolites can serve as biomarkers of cognitive decline in early PD.
Jing‐Yu Shao   +7 more
wiley   +1 more source

Comparison of cpe Values from CFD and Wind Tunnel Testing for Various Surface Roughnesses

open access: yesSlovak Journal of Civil Engineering
This paper presents a comparative analysis of the pressure coefficient (cpe) values obtained through wind tunnel experiments and CFD simulations using two approaches for modeling surface roughness i.e, geometrically explicit roughness and equivalent ...
Cruz Samuel, Palko Milan
doaj   +1 more source

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