Results 141 to 150 of about 2,491 (296)

Resolving passive heat transfer and phase‐change heat in cryogenic CO2 deposition (Desublimation) from CO2/N2 mixtures

open access: yesAIChE Journal, EarlyView.
Abstract In cryogenic CO2 desublimation systems where phase change dominates both heat transfer and separation, conventional lumped thermal‐resistance treatments embed interfacial latent heat into an overall heat‐transfer coefficient, obscuring how phase‐change heat is partitioned between the gas phase and the coolant and limiting diagnostic insight ...
Shengwen Xiao   +2 more
wiley   +1 more source

A Reduced GWP Replacement for HFC-134a in Centrifugal Chillers: XP10 Measured Performance and Projected Climate Impact

open access: yes, 2012
The performance of XP10, a new refrigerant with a reduced GWP, in a centrifugal chiller designed for HFC-134a with a cooling capacity of 1969.44 kW (560 tons) was measured under full and part load conditions and compared to performance with HFC-134a ...
Kulankara, Satheesh   +2 more
core  

Automated generative process synthesis via transformer‐based dual‐loop simulation and optimization

open access: yesAIChE Journal, EarlyView.
Abstract This study presents a novel framework for automated generative process synthesis, addressing the complexity of simultaneously optimizing discrete topologies and continuous operating variables. To overcome conventional superstructure limitations, we propose a dual‐loop architecture integrating generative transformers with rigorous process ...
Yeong Woo Son   +4 more
wiley   +1 more source

Experimental evaluation of R410A, R407C and R134a alternative refrigerants in residential heat pumps

open access: yes, 2018
Protocols and regulations such as the Montreal Protocol (1987), the Kyoto Protocol (1997), the European F-gas regulation (2006) and now its revision (2014) cause a shift toward refrigerants with both zero Ozone Depletion Potential (ODP) and low Global ...
Pardo, Pierre, Mondot, Michèle
core  

Microfluidic Valve‐Integrated Garment for Smooth Sequential Gradient Mechanotherapy

open access: yesAdvanced Intelligent Systems, EarlyView.
We present a soft wearable sleeve that delivers smooth, gap‐free compression using overlapping air‐filled actuators and tiny microfluidic valves. The system reduces bulk, lowers power needs, and uses a smartphone‐sized control box. It can provide sequential gradient compression, gradient pressure holding, and fast deflation, supporting more portable ...
Run Ze Gao   +5 more
wiley   +1 more source

Research and Application Status of Flammable Low CarbonRefrigerant Matching Flame Retardants

open access: yesZhileng xuebao
The current greenhouse effect and the "dual-carbon" goal set off a new wave of refrigerant substitution, requiring new refrigerants need to achieve a comprehensive balance between environmental protection, safety and thermal properties. However, there is
翟瑞   +6 more
doaj  

Alternative Refrigerants in the Liquid Phase: Thermal Conductivity of Binary and Ternary Mixtures.

open access: yes, 1996
Alternative Refrigerants are investigated in the Liquid Phase with respect to the thermal conductivity of Binary and Ternary ...
PASSERINI, Giorgio   +2 more
core  

Melatonin Levels in 89 Individuals With Smith Magenis Syndrome

open access: yesAmerican Journal of Medical Genetics Part A, EarlyView.
ABSTRACT In patients with Smith–Magenis syndrome (SMS), an inverted circadian rhythm of melatonin (MT) contributes to the sleep disturbance. Standard treatment of sleep disturbance with MT often leads to extremely high daytime MT levels, resulting in even more sleep disorders. We therefore retrospectively evaluated the MT data of 89 SMS patients.
Wiebe Braam, Ann C. M. Smith
wiley   +1 more source

AHRI Low Global Warming Potential Alternative Refrigerants Evaluation Program (Low-GWP AREP) – Summary of Phase II Testing Results

open access: yes, 2016
The Air-Conditioning, Heating, and Refrigeration Institute (AHRI) recently completed the second phase of its Low Global Warming Potential Alternative Refrigerants Evaluation Program (Low-GWP AREP). This industry-wide cooperative research program ...
Amrane, Karim, Wang, Xudong
core  

Cell therapy comparison of dental pulp stem cells, hepatocytes, and their exosomes for liver fibrosis treatment in rats

open access: yesAnimal Models and Experimental Medicine, EarlyView.
DPSCs, hepatocytes, and exosomes were tested for liver fibrosis therapy. Exosome‐based treatment exhibited superior antioxidative and regenerative effects. Liver enzymes, oxidative stress, and profibrotic markers were significantly reduced. α‐SMA, desmin, and related gene expression were downregulated.
Sahar Rahimi   +3 more
wiley   +1 more source

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