Results 221 to 230 of about 35,687 (255)
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Biotransformation of 2,3,3,3-tetrafluoropropene (HFO-1234yf)
Toxicology and Applied Pharmacology, 20082,3,3,3-Tetrafluoropropene (HFO-1234yf) is a non-ozone-depleting fluorocarbon replacement with a low global warming potential which has been developed as refrigerant. The biotransformation of HFO-1234yf was investigated after inhalation exposure. Male Sprague-Dawley rats were exposed to air containing 2000, 10,000, or 50,000 ppm HFO-1234yf for 6 h and ...
Paul, Schuster +6 more
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Darstellung und Kristallstruktur von HfOS
Zeitschrift für anorganische und allgemeine Chemie, 1980AbstractBei Versuchen zur Darstellung binärer und ternärer Hafniumsulfide wurden in geringer Menge Einkristalle erhalten, die als HfOS identifiziert werden konnten. HfOS kristallisiert kubisch in der Raumgruppe P213 mit a = 5,6824(6) Å und ist mit der kubischen Modifikation des ZrOS isotyp.
K. Stocks, G. Eulenberger, H. Hahn
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Flammability characteristics of HFO‐1234yf
Process Safety Progress, 2009Abstract A new low global warming refrigerant, CF 3 CF=CH 2 (HFO‐1234yf), has been developed to replace HFC‐134a in automotive air conditioning systems.
Barbara H. Minor +2 more
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Ferroelectric HfO2 formation by annealing of a HfO2/Hf/HfO2/Si(100) stacked structure
Japanese Journal of Applied Physics, 2019In this research, ferroelectric characteristics of HfO2 formed by annealing of a HfO2/Hf/HfO2/Si(100) stacked structure were investigated. It was found that the HfO2/Hf/HfO2 stacked structure enhanced the formation of a metastable orthorhombic phase HfO2 on Si(100) substrate by a post-deposition annealing (PDA) process at a low-temperature of 600 °C ...
Min Gee Kim +2 more
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Atmospheric Environment, 2010
Abstract The photochemical ozone creation potentials (POCPs) for CF3CF CH2 and other commercially significant hydrofluoroolefins have been estimated for the first time. CF3CF CH2 (HFO-1234yf) has a POCP of 7.0 which is less than that for ethane (12.3) and greater than for methane (0.6).
Wallington, T. J. +2 more
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Abstract The photochemical ozone creation potentials (POCPs) for CF3CF CH2 and other commercially significant hydrofluoroolefins have been estimated for the first time. CF3CF CH2 (HFO-1234yf) has a POCP of 7.0 which is less than that for ethane (12.3) and greater than for methane (0.6).
Wallington, T. J. +2 more
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Biotransformation of trans-1,1,1,3-tetrafluoropropene (HFO-1234ze)
Toxicology and Applied Pharmacology, 2009trans-1,1,1,3-Tetrafluoropropene (HFO-1234ze) is a non-ozone-depleting fluorocarbon replacement with a low global warming potential and is developed as foam blowing agent. The biotransformation of HFO-1234ze was investigated after inhalation exposure. Male Sprague-Dawley rats were exposed to air containing 2000; 10,000; or 50,000 ppm (n=5/concentration)
Paul, Schuster +3 more
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Journal of Computational Electronics, 2017
The intensive research in resistive random access memories (RRAM) field has brought in significant improvements in the performance, optimization and reliability of the devices as well as more understanding on their operation. This was made possible through the combination of different tools starting from material engineering to device characterization,
B. Traore +3 more
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The intensive research in resistive random access memories (RRAM) field has brought in significant improvements in the performance, optimization and reliability of the devices as well as more understanding on their operation. This was made possible through the combination of different tools starting from material engineering to device characterization,
B. Traore +3 more
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High-Frequency Oscillations (HFO)
2018High-frequency oscillations (HFO) are new EEG biomarkers for epileptic tissue. These oscillations range in frequencies from 80 to 500 Hz and can be recorded with standard intracranial macroelectrodes. During the presurgical assessment of patients with refractory epilepsy, HFO have been found to occur mainly over seizure onset areas.
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2020
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HFO-1234yf Compressor Durability Study
SAE Technical Paper Series, 2010<div class="section abstract"><div class="htmlview paragraph">As global automotive manufacturers prepare for the introduction of HFO-1234yf as the low GWP refrigerant solution in Europe, concern over compressor durability and material compatibility still remain.
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