scholarly journals NADP Regulates the Yeast GAL Induction System

Science ◽  
2008 ◽  
Vol 319 (5866) ◽  
pp. 1090-1092 ◽  
Author(s):  
P. R. Kumar ◽  
Y. Yu ◽  
R. Sternglanz ◽  
S. A. Johnston ◽  
L. Joshua-Tor
Keyword(s):  
Induction System

Experimental and Numerical Analysis of a Motorcycle Air Intake System Aerodynamics and Performance

2020 ◽  
Vol 17 (1) ◽  
Author(s):  
M. A. Abd Halim ◽  
N. A. R. Nik Mohd ◽  
M. N. Mohd Nasir ◽  
M. N. Dahalan
Keyword(s):  
Combustion Process ◽  
Three Dimensional ◽  
Engine Performance ◽  
Internal Flow ◽  
Rapid Expansion ◽  
Navier Stokes ◽  
Turbulent Fluctuation ◽  
Ansys Fluent ◽  
Induction System ◽  
Acceleration And Deceleration

Induction system or also known as the breathing system is a sub-component of the internal combustion system that supplies clean air for the combustion process. A good design of the induction system would be able to supply the air with adequate pressure, temperature and density for the combustion process to optimizing the engine performance. The induction system has an internal flow problem with a geometry that has rapid expansion or diverging and converging sections that may lead to sudden acceleration and deceleration of flow, flow separation and cause excessive turbulent fluctuation in the system. The aerodynamic performance of these induction systems influences the pressure drop effect and thus the engine performance. Therefore, in this work, the aerodynamics of motorcycle induction systems is to be investigated for a range of Cubic Feet per Minute (CFM). A three-dimensional simulation of the flow inside a generic 4-stroke motorcycle airbox were done using Reynolds-Averaged Navier Stokes (RANS) Computational Fluid Dynamics (CFD) solver in ANSYS Fluent version 11. The simulation results are validated by an experimental study performed using a flow bench. The study shows that the difference of the validation is 1.54% in average at the total pressure outlet. A potential improvement to the system have been observed and can be done to suit motorsports applications.

In-situ compaction and sintering of Al2O3 – GNP nanoparticles using a high-frequency induction system

2018 ◽  
Vol 60 (7-8) ◽  
pp. 727-732
Author(s):  
Uğur Çavdar ◽  
İ. Murat Kusoglu ◽  
Ayberk Altintas
Keyword(s):  
High Frequency ◽  
Induction System ◽  
High Frequency Induction

scholarly journals Development of a photochemical thrombosis investigation system to obtain a rabbit ischemic stroke model

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Yoonhee Kim ◽  
Yoon Bum Lee ◽  
Seung Kuk Bae ◽  
Sung Suk Oh ◽  
Jong-ryul Choi
Keyword(s):  
Ischemic Stroke ◽  
Brain Damage ◽  
Rabbit Model ◽  
Specific Area ◽  
Brain Atlas ◽  
Rabbit Brain ◽  
Stroke Model ◽  
Triphenyltetrazolium Chloride ◽  
Induction System

AbstractPhotochemical thrombosis is a method for the induction of ischemic stroke in the cerebral cortex. It can generate localized ischemic infarcts in the desired region; therefore, it has been actively employed in establishing an ischemic stroke animal model and in vivo assays of diagnostic and therapeutic techniques for stroke. To establish a rabbit ischemic stroke model and overcome the shortcoming of previous studies that were difficult to build a standardized photothrombotic rabbit model, we developed a photochemical thrombosis induction system that can produce consistent brain damage on a specific area. To verify the generation of photothrombotic brain damage using the system, longitudinal magnetic resonance imaging, 2,3,5-triphenyltetrazolium chloride staining, and histological staining were applied. These analytical methods have a high correlation for ischemic infarction and are appropriate for analyzing photothrombotic brain damage in the rabbit brain. The results indicated that the photothrombosis induction system has a main advantage of being accurately controlled a targeted region of photothrombosis and can produce cerebral hemisphere lesions on the target region of the rabbit brain. In conjugation with brain atlas, it can induce photochemical ischemic stroke locally in the part of the brain that is responsible for a particular brain function and the system can be used to develop animal models with degraded specific functions. Also, the photochemical thrombosis induction system and a standardized rabbit ischemic stroke model that uses this system have the potential to be used for verifications of biomedical techniques for ischemic stroke at a preclinical stage in parallel with further performance improvements.

Sound Synthesis for an Engine Air Induction System

2007 ◽  
Author(s):  
Paulo A. G. Zavala ◽  
José Roberto de França Arruda
Keyword(s):  
Sound Synthesis ◽  
Induction System

Demonstration of cytoplasmic processes in Millipore filters permitting kidney tubule induction

Development ◽  
1975 ◽  
Vol 33 (1) ◽  
pp. 187-203
Author(s):  
E. Lehtonen ◽  
J. Wartiovaara ◽  
S. Nordling ◽  
L. Saxén
Keyword(s):  
Spinal Cord ◽  
Kidney Tubules ◽  
Metanephric Mesenchyme ◽  
Kidney Tubule ◽  
Close Apposition ◽  
Cytoplasmic Material ◽  
Diffusion Studies ◽  
Induction System ◽  
Cytoplasmic Processes ◽  
Millipore Filters

The presence of cytoplasmic material inside thin Millipore filters between interacting mouse metanephric mesenchyme and spinal cord was investigated using different fixation methods. The transmission of induction was studied from sections of Zenker-fixed paraffin-embedded explants. Formation of kidney tubules was taken as evidence for induction. Filters with 0·8 and 0·22 μm pores permitted induction, whereas only 6 out of 31 filters with 0·1 μm. pores did so. Glutaraldehyde-fixed Epon-embedded explants were used for study of cytoplasmic penetration into filters. In thick sections, filters with large pores were seen to contain cytoplasmic material at all levels. Filters with 0·1 μm pores usually showed only shallow ingrowth, but those which had permitted passage of induction contained material at least half way from the spinal cord and shallow ingrowth from the mesenchyme. With 0·8 μm filters the ingrowths from both sides met first after 18 h of transfilter cultivation. This has previously been shown to be the minimum time needed for induction to take place in this system. In electron microscopy cytoplasmic processes were seen deep inside the 0·8 and 0·22 μm filters regularly permitting induction. In small pores such material was only preserved by certain glutaraldehyde fixatives. Diffusion studies did not reveal major differences between induction-permitting 0·22 μm filters and induction-preventing 0·1 μm filters. Thus in the kidney tubule induction system this and our previous work speak in favour of a mechanism based on close apposition of cells rather than on long-range diffusion of inductive substances or on matrix interaction.

Design of a Restricted Induction System for a High Speed Four Cylinder Engine

2000 ◽  
Author(s):  
Badih A. Jawad ◽  
Michael D. Degain ◽  
Anthony P. Young
Keyword(s):  
High Speed ◽  
Induction System

NANOSEEDING EFFECT IN ZSM-5 CRYSTALLIZATION PROCESS

NANO ◽  
2013 ◽  
Vol 08 (03) ◽  
pp. 1350027
Author(s):  
YI LU ◽  
NAI-QIAN ZHANG ◽  
QIN TONG ◽  
JIN-KU LIU ◽  
DAN-JING HONG
Keyword(s):  
Crystallization Process ◽  
Nitrogen Adsorption ◽  
Particle Size Effect ◽  
Isomerization Reaction ◽  
Transmission Electron Micrograph ◽  
Electron Micrograph ◽  
X Ray Diffraction ◽  
Transmission Electron ◽  
Induction System ◽  
Temperature Programmed

ZSM-5 zeolites were hydrothermally synthesized in three different seeding pathways under the direction of tetrapropylammonium bromide (TPABr) template. In order to investigate the seeding effect in ZSM-5 crystallization process, ZSM-5 crystals and pre-fabricated MFI-type nanoseeds were added into the original self-induction system, respectively. The final ZSM-5 zeolites were systematically investigated based on XRD (X-ray diffraction), SEM (scanning electron micrograph), TEM (transmission electron micrograph), nitrogen adsorption characterizations and NH3 -TPD (ammonia-temperature programmed desorption). The self-induction system produced ca. 20 μm ZSM-5 zeolite displaying hexagonally uniform prisms. After the addition of ZSM-5 crystal seeds, the crystal sizes were decreased greatly to ca. 5 μm. When MFI-type nanoseeds were adopted, irregular aggregate particles consisting of 20–50 nm primary particles were rapidly synthesized. The varied hydrothermal crystallization kinetics of the three synthesis system was also explored. Adjusting the seed agents alone, ZSM-5 crystals with diverse structural, morphological, textural and hydrothermal behaviors could be fabricated conveniently. The three ZSM-5 zeolites loaded by 0.05 wt.% Pt were assessed for the xylene isomerization reaction to investigate the particle size effect on the catalytic properties.

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