Results 161 to 170 of about 10,829 (309)

Results of heating mode performance tests of a solar-assisted heat pump [PDF]

The performance of a heat pump, utilizing 8.16 square meters of low-cost solar collectors as the evaporator in a Freon-114 refrigeration cycle, was determined under actual insolation conditions during the summer and fall of 1976. C.O.P.'s (coefficient of
Jones, C. B., Smetana, F. O.
core   +1 more source

A High Energy Barrier DyIII2 Single‐Molecule Magnet Supported by a Bulky, Anionic N–O Bridging Ligand

Chemistry – A European Journal, EarlyView.
Complex [Dy2(hynad)2(dbm)4] was prepared by the employment of the anionic N–O‐based bridging and chelating N‐hydroxy‐1,8‐naphthalimide ligand, featuring a {Dy2(µ‐OR)2}4+ core and exhibiting zero‐field SMM behavior with a Ueff value of 171 K and double‐S‐shaped hysteresis loops, open up to 3.5 K.
Alexandros S. Armenis, Concepción Molina‐Jirón, Konstantinos N. Pantelis, Wolfgang Wernsdorfer, Mario Ruben, Eufemio Moreno‐Pineda, Theocharis C. Stamatatos   +6 more
wiley   +1 more source

Expedient Discovery of a Metallaphotoredox Cyanomethylation for Synthesizing α‐Aryl Nitriles

Chemistry – A European Journal, EarlyView.
A metallaphotoredox cyanomethylation reaction has been developed for the synthesis of valuable α‐aryl nitrile intermediates. The methodology was successfully applied to diverse medicinally‐relevant substrates, providing an expedient route to anti‐cancer Senexin compounds, while also removing the need for toxic cyanide reagents. The mechanism was probed
Gemma C. Cook, Blandine McKay, Craig Jamieson, Lee J. Edwards, Charlotte Harriman, Zackary S. Read, Simon T. Bate   +6 more
wiley   +1 more source

Development of a Mechanically Regenerating Desublimator for Freeze‐Drying Systems in the Food Industry

Chemie Ingenieur Technik, EarlyView.
Thermal defrosting limits desublimator efficiency in freeze‐drying. This review and case study compares thermal versus mechanical regeneration, links frost properties and external heat transfer to energy demand, and summarizes pilot‐scale scraping results enabling single‐unit, continuous lyophilization.
Moritz Krummenacher, Mirko Kleingries, Edgar Zimmer, Roman Blättler   +3 more
wiley   +1 more source

Cryoablation: Nitrogen or Nitrous Oxide? Balloon or Nonballoon? [PDF]

JACC Asia, 2023
Miyamoto K.
europepmc   +1 more source

Valorization of Yacon (Smallanthus sonchifolius) peel for peroxidase production and its immobilization on alginate beads for 2,4‐dichlorophenol bioconversion

The Canadian Journal of Chemical Engineering, EarlyView.
Sodium alginate was modified with EDC/NHS for the immobilization of Yacon peel peroxidase, resulting in a novel biocatalyst for the oxidation of 2,4‐dichlorophenol. Abstract Yacon (Smallanthus sonchifolius) roots are emerging as an alternative source of peroxidase. This study aimed to extract, immobilize, and characterize the peroxidase from Yacon peel,
Mariana Gomes Oliveira, Marcela Pires Spaolonzi, Carla Ivane Ganz Vogel, Aniela Pinto Kempka, Everton Skoronski   +4 more
wiley   +1 more source

Decommissioning and Safe Disposal of Vaccine Cold Chain Equipment in Low- and Middle-Income Countries: Focusing on Processes, Risks, and Practical Challenges. [PDF]

Cureus
Singh SK, Haile DA, Syed S, Bhatt D, Sethy G, Hassan A, Kumar A, Juneja S, Kapuria B.   +8 more
europepmc   +1 more source

Influence of capillary tube length on the performance of domestic refrigerator with eco-friendly refrigerant R152a. [PDF]

Sci Rep, 2022
Baskaran A, Manikandan N, Jule L, Nagaprasad N, Saka A, Badassa B, Ramaswamy K, Seenivasan V.   +7 more
europepmc   +1 more source

COP improvement of refrigerator/freezers, air-conditioners, and heat pumps using nonazeotropic refrigerant mixtures [PDF]

With the February, 1992 announcement by President Bush to move the deadline for outlawing CFC (chloro-fluoro-carbon) refrigerants from the year 2000 to the year 1996, the refrigeration and air-conditioning industries have been accelerating their efforts ...
Westra, Douglas G.
core   +1 more source

Performance comparison of pressure swing adsorption and amine‐based absorption for synthesis gas purification

The Canadian Journal of Chemical Engineering, EarlyView.
Comparison of PSA and amine‐based absorption for syngas purification shows that PSA offers lower energy intensity, global warming potential, and minimum selling price, making it a more sustainable option. However, absorption achieves higher syngas purity. A GREENSCOPE‐based multi‐criteria assessment guides optimal process selection.
Magno Fonseca Santos, Antonio Esio Bresciani, Rita Maria Brito Alves   +2 more
wiley   +1 more source