Results 261 to 270 of about 6,605,659 (346)

[Case-crossover studies].

open access: yesTidsskrift for den Norske laegeforening : tidsskrift for praktisk medicin, ny raekke
Stian, Lydersen   +1 more
openaire   +1 more source

Air pollution and emergency department visits for respiratory diseases: A multi-city case crossover study

open access: hybrid, 2018
Mieczysław Szyszkowicz   +3 more
openalex   +1 more source

Short-term exposure to ambient temperature variability and myocardial infarction hospital admissions: A nationwide case-crossover study in Sweden. [PDF]

open access: yesPLoS Med
Ni W   +9 more
europepmc   +1 more source

Impact of rapid temperature fluctuations on acute stroke risk: a nationwide case-crossover study from 2001 to 2020. [PDF]

open access: yesLancet Reg Health West Pac
Kono M   +6 more
europepmc   +1 more source

Exploratory Study on Carbon Dioxide Blends With Low‐GWP Working Fluids for Medium and High‐Temperature Heat Pumps Under Step Pressure

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study investigates binary zeotropic mixtures of R744 (CO₂) blended with eco‐friendly refrigerants for medium‐high temperature heat pumps, comparing them with conventional R744/R134a systems. All mixtures meet 60–80 K temperature lift requirements under low‐temperature conditions. A genetic algorithm optimized system parameters using fixed
Lingling Sun   +6 more
wiley   +1 more source

Short‐Term Scheduling Optimization of a Single‐Pipeline Refining System With High Melting Point Crude Oil

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT In order to reflect the actual production situation more comprehensively and optimize the production cost, this paper solves the short‐term scheduling optimization problem for a single pipeline containing high melting point crude oil. Based on the refining plan given by the upper layer, a multi‐objective optimization model with high melting ...
Jing Yao   +5 more
wiley   +1 more source

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