Results 21 to 30 of about 2,577,898 (160)

Study on a Novel Absorption Referigeration System at Low Cooling Temperatures [PDF]

open access: yes, 2012
A novel absorption refrigeration system is proposed in this context using R134a+R23 mixed refrigerants and DMF solvent. The new system uses two-staged absorber in series to reduce the evaporation pressure and can obtain a lower refrigeration temperature ...
Chen, Guangming   +3 more
core   +1 more source

Shortcut model for predicting refrigeration cycle performance [PDF]

open access: yes, 2015
Compression refrigeration systems are very widely used to provide cooling to sub-ambient processes. The power demand of the cycle depends strongly on the temperature at which cooling is required, the temperature at which the refrigerant is condensed, as ...
Emtir, M., Jobson, Megan, Etoumi, Asma
core   +1 more source

Modeling and Simulation of a Desiccant Assisted Brayton Refrigeration Cycle [PDF]

open access: yes, 2012
The phase-out of CFCs has shed a new light over natural refrigerants, which have null global warming potentials. Air would be a natural choice, and although the Brayton cycle usually exhibits a lower coefficient of performance when compared to vapor ...
Nobrega, Carlos E.L.   +1 more
core   +1 more source

Study on Mixed Refrigerants Selecting and Matching of a Four Stage Auto-cascade Refrigeration

open access: yes, 2013
The selection and mixture ratio of the mixed refrigerants are important to a multistage auto-cascade refrigeration system. A simulation method was found for the mixed refrigerants selection and ratio calculation by using the commercial software REFPROP8 ...
Xiao Chuanjing   +4 more
core   +1 more source

Simulation of an Ammonia-Carbon Dioxide Transcritical Cascade Refrigeration System [PDF]

open access: yes
This study aims to evaluate the viability of employing ammonia (R717), a naturally existing refrigerant, within a transcritical cascade refrigeration configuration.
Majdi, Hasan Shakir   +3 more
core   +1 more source

Endocrine and androgenic response to altitude training in professional cyclists

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Steroidal and endocrine variables are altered during altitude training. Abstract This study investigated endocrine and steroidal blood markers in 31 male elite cyclists monitored over 7 weeks, including a 3 week altitude training camp either at 2050 m (n = 19) or 3000 m (n = 12).
Raphael Faiss   +11 more
wiley   +1 more source

Spray‐Dried Engineered Escherichia coli Whole‐Cell Biocatalysts Enable Cell Recycling and In Vivo α‐Ketoglutarate and NADPH Regeneration for Efficient Codeine Manufacture

open access: yesBiotechnology and Bioengineering, Volume 123, Issue 10, Page 2629-2642, October 2026.
ABSTRACT A recombinant whole‐cell biocatalytic approach provides several advantages over isolated enzymes, such as improved enzyme stability, in vivo cofactor regeneration, and the facilitation of cascade reactions within a single cell. Whole‐cell biocatalysis has gained attention in medicinal opioid production, due to its technical and economic ...
Ali Jahanian   +4 more
wiley   +1 more source

Integrating Transcriptomic and Proteome Analysis to Understand Muscle Qualities and Related Regulatory Factors of Holstein Beef Under Transportation Stress

open access: yesFood Science &Nutrition, Volume 14, Issue 10, October 2026.
In Holstein steers subjected to 15 h of long‐distance transportation, beef exhibited marked differences in meat quality, myofibrillar structure, and flavor components compared with cattle slaughtered without prior transport. These differences included significantly increased shear force, water loss rate, and drip loss, shortened sarcomere length, and ...
Zhaomin Lei   +5 more
wiley   +1 more source

Gut Microbiota‐Dependent Tryptophan Metabolism Drives the Therapeutic Effects of Baitouweng Tang in Colitis via the AhR Pathway

open access: yesFood Science &Nutrition, Volume 14, Issue 10, October 2026.
Baitouweng Tang alleviates colitis symptoms in mice by regulating the structure and diversity of gut microbiota, increasing the content of gut microbiota‐related tryptophan metabolites, activating AhR, inhibiting the release of inflammatory mediators, and improving intestinal homeostasis.
Chun Niu   +6 more
wiley   +1 more source

Control optimisatlion of CO(2) cycles for medium temperature retail food refrigeration systems [PDF]

open access: yes, 2009
This is the post-print version of the final paper published in International Journal of Refrigeration. The published article is available from the link below.
Ge, YT, Tassou, SA
core   +1 more source

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