6,484 research outputs found
Alleviation of carbon catabolite repression in Enterobacter aerogenes for efficient utilization of sugarcane molasses for 2,3-butanediol production
Table S3. Comparison of fed-batch fermentation with EMY-01, EMY-68, EMY-70S, and EMY-70SP using sugarcane molasses
Numerical Modelling for Effect of Water Curtain in Mitigating Toxic Gas Release
PresentationAs the chemical industry has developed, the use of toxic substances has increased, and leakage accidents have increased. Among various substances, hydrogen fluoride (HF) and ammonia (NH3) are representative materials for the study since both are hazardous and important in the chemical industry. HF is a strong, pervious substance that is a stimulates on the body, respiratory system, and skin. HF is widely used in electronics manufacturing as a polisher and disinfectant. Since an HF release accident occurred in Gumi, S. Korea (2012) the Korea Occupational Safety and Health Agency (KOSHA) has emphasized that special attention and management is needed with respect to this toxic substance. NH3 is widely used in the semiconductor industry and chemical processes. There have been about 20 large accidents regarding NH3 around the world in last 10 years. In this study, ANSYS Fluent, a computational fluid dynamics (CFD) program, was used to identify the effect of a water curtain as a mitigation system for toxic substances that are leaked from industrial facilities. Simulations were conducted to analyze how effectively a water curtain mitigated the dispersion of toxic substances. To verify the accuracy of the simulation, Goldfish experiment and INERIS Ammonia dispersion experiment were simulated and compared. Various water curtains were applied to the simulated field experiment to confirm the mitigation factors of toxic substances. The results show that the simulations and experiments are consistent and that the dispersion of toxic substances can be mitigated by water curtains
Ultrafast Electron Microscopy Integrated with a Direct Electron Detection Camera
In the past decade, we have witnessed the rapid growth of the field of ultrafast electron microscopy (UEM), which provides intuitive means to watch atomic and molecular motions of matter. Yet, because of the limited current of the pulsed electron beam resulting from space-charge effects, observations have been mainly made to periodic motions of the crystalline structure of hundreds of nanometers or higher by stroboscopic imaging at high repetition rates. Here, we develop an advanced UEM with robust capabilities for circumventing the present limitations by integrating a direct electron detection camera for the first time which allows for imaging at low repetition rates. This approach is expected to promote UEM to a more powerful platform to visualize molecular and collective motions and dissect fundamental physical, chemical, and materials phenomena in space and time.ope
Recommended from our members
Chicken Run: Dawn of the Nugget is a fast-paced slapstick extravaganza
Chicken Run 2: Dawn of the Nugget combines the distinctive charm of the Great Escape-esque story that characterised the original Chicken Run (2000), with an action-packed plot, staged in a futuristic setting fit for the 21st century. Picking the story up from where the original Chicken Run ended, this time the plot is inspired by Mission Impossible (1996) and James Bond – a caper film that sees the chicken protagonists breaking in, rather than breaking out. Protagonists Ginger (Thandiwe Newton) and Rocky (Zachary Levi) are now parents to the runaway teenage chick Molly (Bella Ramsey), who ends up in the clutches of her parents’ arch nemesis, Mrs Tweedy (Miranda Richardson). Tweedy has received a “glamorous make-over” for the sequel, while her chicken farm has been replaced with a futuristic chicken fun land – a compound that serves the meat-hungry food industry an assembly line of poultry. Trying to save their daughter from becoming a chicken nugget, Rocky, Ginger and their fellow chickens venture to break into this high-tech bastion. With appealing new characters, emotional depth and distinctly British humour, this fast-paced slapstick extravaganza is both a technical and artistic achievement
Optimizing Parameters of Information-Theoretic Correlation Measurement for Multi-Channel Time-Series Datasets in Gravitational Wave Detectors
Data analysis in modern science using extensive experimental and
observational facilities, such as a gravitational wave detector, is essential
in the search for novel scientific discoveries. Accordingly, various techniques
and mathematical principles have been designed and developed to date. A
recently proposed approximate correlation method based on the information
theory is widely adopted in science and engineering. Although the maximal
information coefficient (MIC) method remains in the phase of improving its
algorithm, it is particularly beneficial in identifying the correlations of
multiple noise sources in gravitational-wave detectors including non-linear
effects. This study investigates various prospects for determining MIC
parameters to improve the reliability of handling multi-channel time-series
data, reduce high computing costs, and propose a novel method of determining
optimized parameter sets for identifying noise correlations in gravitational
wave data.Comment: 11 pages, 8 figure
- …