Results 51 to 60 of about 1,822,559 (326)
Impact of ultrasonic dispersion on the photocatalytic activity of titania aggregates
The effectiveness of photocatalytic materials increases with the specific surface area, thus nanoscale photocatalyst particles are preferred. However, such nanomaterials are frequently found in an aggregated state, which may reduce the photocatalytic ...
Hoai Nga Le+5 more
doaj +1 more source
Quick evaluation of hot air ageing resistance for natural rubber
The hot air ageing resistance of natural rubber vulcanizates was investigated with differential scanning calorimetry. The apparent activation energy, reaction rate constant(KT) and oxidative induction time(ti) for oxidation reaction were obtained by ...
WU Ling-ling1, WANG Xue-fei1, WANG Chang-ying2, LIU Quan1, HUANG Liang-ping1, YU Hai-wen1
doaj +1 more source
Social context prevents heat hormetic effects against mutagens during fish development
This study shows that sublethal heat stress protects fish embryos against ultraviolet radiation, a concept known as ‘hormesis’. However, chemical stress transmission between fish embryos negates this protective effect. By providing evidence for the mechanistic molecular basis of heat stress hormesis and interindividual stress communication, this study ...
Lauric Feugere+5 more
wiley +1 more source
The Role of Microenvironment Reagent Solubility on Reaction Kinetics of 4-Nitrophenol Reduction [PDF]
The Role of Microenvironment Reagent Solubility on Reaction Kinetics of 4-Nitrophenol Reduction Michael Zeevi1 with Andrew Harrison1 and Christina Tang, PhD1 1Department of Chemical and Life Science Engineering, VCU School of Engineering Introduction ...
Harrison, Andrew+2 more
core +1 more source
On the kinetics between CO2 and alkanolamines both in aqueous and non-aqueous solutions—I. Primary and secondary amines [PDF]
The reaction between CO2 and primary and secondary alkanolamines (DEA and DIPA) has been studied both in aqueous and non-aqueous solutions (ethanol and n-butanol) at various temperatures.
Swaaij, W.P.M. van, Versteeg, G.F.
core +6 more sources
Kinetics of heterogeneous methanolysis of sunflower oil with CaO∙ZnO catalyst: Influence of different hydrodynamic conditions [PDF]
The kinetics of heterogeneous methanolysis of sunflower oil was studied at 60°C using mechanochemically synthesized CaO∙ZnO as catalyst. Influence of agitation speed, catalyst amount and methanol to oil molar ratio on the rate of reaction was ...
Lukić Ivana+5 more
doaj +1 more source
With spherical Fe-Mn-CuOx/γ-Al2O3 catalyst as the packing of RPB (Rotating Packed Bed), the apparent reaction kinetics of phenol degradation by high gravity intensified heterogeneous catalytic ozonation was investigated under different operating ...
Kechang GAO+7 more
doaj +1 more source
To explore the impact of the overexpression of the multidrug‐transporter P‐glycoprotein (ABCB1) on membrane fluidity, we compared the transversal gradient of mobility and microviscosity in plasma membranes of drug‐sensitive Chinese hamster ovary cells (AuxB1) and their multidrug‐resistant derivatives (B30) using the fluorescent n‐(9‐anthroyloxy) fatty ...
Roger Busche+2 more
wiley +1 more source
On the theory of the reaction rate of vibrationally excited CO molecules with OH radicals [PDF]
The dependence of the rate of the reaction CO+OH-->H+CO2 on the CO-vibrational excitation is treated here theoretically. Both the Rice-Ramsperger-Kassel-Marcus (RRKM) rate constant kRRKM and a nonstatistical modification knon [W.-C. Chen and R. A. Marcus,
Chen, Wei-Chen, Marcus, R. A.
core +1 more source
This study reveals how prime editing guide RNA (pegRNA) secondary structure and reverse transcriptase template length affect prime editing efficiency in correcting the phospholamban R14del cardiomyopathy‐associated mutation. Insights support the design of structurally optimized enhanced pegRNAs for precise gene therapy.
Bing Yao+7 more
wiley +1 more source