Results 31 to 40 of about 17,876,451 (313)

Performance of a Tube-bundle Heat Exchanger in a Rectangular-section Right-angle Bend Duct [PDF]

open access: yesJournal of Applied Fluid Mechanics
Three-dimensional numerical simulations are conducted to elucidate the fundamental differences in hydrodynamics and heat transfer performance between heat exchangers arranged in confined rectangular-section right-angle bend ducts and those in straight ...
X. Wang, C. Li, Y. Yan, X. Ye
doaj   +1 more source

Power Valve: for low power operation and low stand-by power

open access: yesIEICE Electronics Express, 2005
The concept of Power Valve is presented. It consists of power switch transistors and control circuits, which give variable impedance to the power supply. The circuit controls the internal power supply voltage of logic circuits and reduces the voltage swing of signals. An experiment using a 130-nm test chip showed a 36.0% operating power reduction for a
Takahiro Yamashita   +2 more
openaire   +2 more sources

Experimental and Numerical Study on the Elimination of Severe Slugging by Riser Outlet Choking

open access: yesEnergies, 2022
Severe slugging is an unstable multiphase flow pattern occurs in a pipeline riser with low gas and liquid flowrates. It is highly undesired in practical operation because of the pressure and mass flow oscillations induced.
Nailiang Li   +3 more
doaj   +1 more source

Study on characteristics of carbonyl compounds from pyrolysis of holocellulose catalyzed by coal gasification fine slag

open access: yesMeitan xuebao
The resource utilization of biomass and coal gasification fine slag (CGFS) is considered crucial for ensuring national energy security, mitigating environmental pollution, and achieving China’s “dual carbon” target.
Yuan LIU   +8 more
doaj   +1 more source

Parent‐to‐Child Information Disclosure in Pediatric Oncology

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Despite professional consensus regarding the importance of open communication with pediatric cancer patients about their disease, actual practice patterns of disclosure are understudied. Extant literature suggests a significant proportion of children are not told about their diagnosis/prognosis, which is purported to negatively ...
Rachel A. Kentor   +12 more
wiley   +1 more source

Improved Outcomes for Older Children, Adolescents, and Young Adults With Neuroblastoma in the Post‐Immunotherapy Era: An Updated Report From the International Neuroblastoma Risk Group

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background We describe clinical and biologic characteristics of neuroblastoma in older children, adolescents, and young adults (OCAYA); describe survival outcomes in the post‐immunotherapy era; and identify if there is an age cut‐off that best discriminates outcomes.
Rebecca J. Deyell   +14 more
wiley   +1 more source

Patient‐Level Barriers and Facilitators to Inpatient Physical Therapy in Adolescents and Young Adults With a Hematological Malignancy: A Qualitative Study

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Despite their increased risk for functional impairment resulting from cancer and its treatments, few adolescents and young adults (AYAs) with a hematological malignancy receive the recommended or therapeutic dose of exercise per week during inpatient hospitalizations.
Jennifer A. Kelleher   +8 more
wiley   +1 more source

Study on the mechanism of hydrogen production by methane decomposition catalyzed by activated carbon loaded by carbon black for increasing defect sites

open access: yesMeitan kexue jishu
Under the background of the “dual carbon goal” era, hydrogen production from methane decomposition is considered to be a promising high-purity hydrogen production technology due to no CO2 emissions.
Li YANG   +5 more
doaj   +1 more source

Low-dose ionizing radiation alleviates Aβ42-induced cell death via regulating AKT and p38 pathways in Drosophila Alzheimer's disease models

open access: yesBiology Open, 2019
Ionizing radiation is widely used in medicine and is valuable in both the diagnosis and treatment of many diseases. However, its health effects are ambiguous.
Soojin Hwang   +5 more
doaj   +1 more source

Emergency restoration method of integrated energy system in coordination with upper and lower control

open access: yesEnergy Reports, 2022
The frequent occurrence of extreme meteorological disasters in urban areas during winter poses great impacts on the secure operation of regional energy infrastructures, leading to cascading failures and load losses in integrated energy systems (IESs). To
Hongbin Wang   +5 more
doaj   +1 more source

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