Obtaining a Composite Material for Varistor Ceramics in One Short-Time Operation Cycle of a Coaxial Magnetoplasma Accelerator

2020 ◽  
Author(s):  
Yuliya Shanenkova ◽  
Aleksandr Sivkov ◽  
Ilyas Rahmatullin ◽  
Alexander Tsimmerman ◽  
Alexander Ivashutenko ◽  
...  
Keyword(s):  
Composite Material ◽  
Time Operation ◽  
Operation Cycle ◽  
Short Time ◽  
Coaxial Magnetoplasma Accelerator

Performance of Thick TiN Composite Coating as High Heat Resistant TBC

2005 ◽  
Vol 502 ◽  
pp. 511-516 ◽  
Author(s):  
Akira Kobayashi
Keyword(s):  
Titanium Nitride ◽  
Composite Coating ◽  
Steel Substrate ◽  
High Heat ◽  
Heat Resistant ◽  
Tin Coatings ◽  
Tin Film ◽  
Time Operation ◽  
Coating Characteristics ◽  
Short Time

Titanium nitride (TiN) coating has excellent properties and has been already used in the various field of industry. But TiN film has problems in the formation process: i.e., low deposition rate and poor thickness of the film. TiN thick coatings can be formed by means of the gas tunnel type plasma reactive spraying in a short time operation. In this study, the fundamental characteristics of this method were investigated by measuring the properties of the titanium nitride (TiN) coatings formed on the traversed stainless steel substrate. Consequently, TiN coatings of 200µm thickness were obtained at P=27kW, within t=5s, and some coating characteristics which depend on the spraying distance, the environmental gas, traverse number etc. were clarified. And the performance of TiN thick composite coating was discussed as a heat resistant TBC.

A New One-Pot Way to Prepare Enzyme-Containing Coordination Polymers by Sonochemistry

2021 ◽  
Vol 21 (5) ◽  
pp. 2935-2938
Author(s):  
Alessandra Scano ◽  
Valentina Cabras ◽  
Guido Ennas
Keyword(s):  
Composite Material ◽  
Glucose Oxidase ◽  
Coordination Polymers ◽  
Thermal Characterization ◽  
Zinc Salt ◽  
Sonochemical Method ◽  
One Pot ◽  
Conventional Methods ◽  
Short Time

Enzyme-containing Coordination Polymers (CPs) were prepared by a one-pot sonochemical method, mixing Glucose Oxidase (GOx) enzyme, 4,4′-bipyridine as spacer ligand, and chloride zinc salt. The reaction took place in a very short time (a few minutes) with a minimum use of solvents compared to conventional methods. The obtained composite material, named GOx-[Zn(4,4′-bipy)Cl2]∞, resulted from embedding the GOx molecules into uniformly sized [Zn(4,4′-bipy)Cl2] nanocrystals. The structural and thermal characterization, confirmed that the adopted strategy allows the preparation of hybrid bio-nanomaterials in a very fast, facile and eco-friendly method, by simply synthesising the [Zn(4,4′-bipy)Cl2] nanocrystals in the presence of the enzyme.

Thrust Optimization and Thermal Analysis of a Water-Cooled Double-Sided Permanent Magnet Linear Synchronous Motor

2013 ◽  
Vol 416-417 ◽  
pp. 241-246 ◽  
Author(s):  
Xin Min Zhang ◽  
Qin Fen Lu ◽  
Chuan Ying Cheng ◽  
Jia Meng Shi ◽  
Yun Yue Ye ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Permanent Magnet ◽  
Permanent Magnets ◽  
Synchronous Motor ◽  
Transient Temperature ◽  
Linear Synchronous Motor ◽  
Time Operation ◽  
Short Time ◽  
Two Sides ◽  
Motor Structure

A water-cooled, double-sided permanent magnet linear synchronous motor (PMLSM) is studied by electromagnetic and thermal finite-element (FE) analysis method. Based on electromagnetic analysis, the better structure of this double-sided PMLSM can be obtained after thrust optimization by adjusting motor structure parameters. In order to minimize the thrust ripple, it is further optimized by shifting permanent magnets or armature iron cores of two sides for a small distance. With thermal analysis, the temperature distribution and transient temperature variation of this optimal PMLSM are investigated under the continuous operation and the short-time operation.

scholarly journals A Comparative Study of LAMP and PCR in Relation to Time and Cost

2022 ◽  
Vol 12 (2) ◽  
pp. 72-75
Author(s):  
Tanzila Rawnuck ◽  
Md Selim Reza ◽  
Mohammad Jahidur Rahman Khan ◽  
Rashida Akter Khanam ◽  
Saif Ullah Munshi
Keyword(s):  
Low Cost ◽  
Cost Effective ◽  
Molecular Techniques ◽  
Molecular Technique ◽  
Serum Samples ◽  
Setup Cost ◽  
Time Duration ◽  
Time Operation ◽  
The Cost ◽  
Short Time

Background: The Loop-mediated isothermal amplification (LAMP) represents a very sensitive, easy to use, and less time consuming diagnostic method. Aims: The aim was to establish a simple, cost-effective, molecular technique. Materials and methods: An analytical study was conducted using two hundred acute serum samples using two different molecular techniques; qPCR and LAMP to standardize a costeffective and less time-consuming technique. Results: The cost of in-house LAMP reagents was one-ninth of the cost of commercial qPCR. Consume cost was 23 times less than qPCR besides, lab setup cost was 92 times less than qPCR. More importantly, LAMP requires 5-6 times less time duration than qPCR. Conclusion: Due to its simple short-time operation with low cost, it would be a prevalent molecular technique globally, particularly in Bangladesh. J Shaheed Suhrawardy Med Coll 2020; 12(2): 72-75

Study on the Influence of Current Collector on the Sudden Deterioration of Solid Oxide Fuel Cell Anode Performance

2013 ◽  
Vol 11 (2) ◽  
Author(s):  
Zhenjun Jiao ◽  
Naoki Shikazono
Keyword(s):  
Fuel Cell ◽  
Solid Oxide Fuel Cell ◽  
Current Collector ◽  
Solid Oxide ◽  
High Humidity ◽  
Oxide Fuel ◽  
Time Operation ◽  
Cell Anode ◽  
Short Time ◽  
Fuel Cell Anode

The influence of current collector on the sudden deterioration phenomena of conventional nickel-yttria-stabilized zirconia composite solid oxide fuel cell (SOFC) anodes operated in hydrogen with high humidity concentration is investigated. Current collectors of different materials have been tested within different conditions. It is found that the loss of contact between current collector mesh and the top surface of an anode cause the sudden deterioration of the anode. Platinum and gold current collector meshes have been proven to lead to the sudden deterioration of an anode in short time operation in high humidity conditions in conventional SOFC operation temperatures.

What the replication reformation wrought

2018 ◽  
Vol 41 ◽  
Author(s):  
Barbara A. Spellman ◽  
Daniel Kahneman
Keyword(s):  
Reform Movement ◽  
Short Time

AbstractReplication failures were among the triggers of a reform movement which, in a very short time, has been enormously useful in raising standards and improving methods. As a result, the massive multilab multi-experiment replication projects have served their purpose and will die out. We describe other types of replications – both friendly and adversarial – that should continue to be beneficial.

Periodic Variations in the Coronal Green Line Intensity and their Connection with the White-light Coronal Structures

2000 ◽  
Vol 179 ◽  
pp. 197-200
Author(s):  
Milan Minarovjech ◽  
Milan Rybanský ◽  
Vojtech Rušin
Keyword(s):  
Time Resolution ◽  
White Light ◽  
Short Time Scale ◽  
High Time Resolution ◽  
Green Line ◽  
Periodic Intensity ◽  
Coronal Green Line ◽  
Significant Intensity ◽  
Short Time ◽  
Coronal Structures

AbstractWe present an analysis of short time-scale intensity variations in the coronal green line as obtained with high time resolution observations. The observed data can be divided into two groups. The first one shows periodic intensity variations with a period of 5 min. the second one does not show any significant intensity variations. We studied the relation between regions of coronal intensity oscillations and the shape of white-light coronal structures. We found that the coronal green-line oscillations occur mainly in regions where open white-light coronal structures are located.

Destruction of Actin Filaments by Osmium Tetroxide

1977 ◽  
Vol 35 ◽  
pp. 466-467
Author(s):  
P. Maupin-Szamier ◽  
T. D. Pollard
Keyword(s):  
Actin Filaments ◽  
Time Course ◽  
Osmium Tetroxide ◽  
Rabbit Muscle ◽  
Muscle Actin ◽  
Sodium Phosphate Buffer ◽  
Transmission Electron ◽  
The Difference ◽  
Rates Of Decay ◽  
Short Time

We have studied the destruction of rabbit muscle actin filaments by osmium tetroxide (OSO4) to develop methods which will preserve the structure of actin filaments during preparation for transmission electron microscopy.Negatively stained F-actin, which appears as smooth, gently curved filaments in control samples (Fig. 1a), acquire an angular, distorted profile and break into progressively shorter pieces after exposure to OSO4 (Fig. 1b,c). We followed the time course of the reaction with viscometry since it is a simple, quantitative method to assess filament integrity. The difference in rates of decay in viscosity of polymerized actin solutions after the addition of four concentrations of OSO4 is illustrated in Fig. 2. Viscometry indicated that the rate of actin filament destruction is also dependent upon temperature, buffer type, buffer concentration, and pH, and requires the continued presence of OSO4. The conditions most favorable to filament preservation are fixation in a low concentration of OSO4 for a short time at 0°C in 100mM sodium phosphate buffer, pH 6.0.

Atomic structure of interface of intermetallic compound TiAl and nitride Ti2AIN using HREM and image processing

1991 ◽  
Vol 49 ◽  
pp. 570-571
Author(s):  
E. Sukedai ◽  
H. Mabuchi ◽  
H. Hashimoto ◽  
Y. Nakayama
Keyword(s):  
Mechanical Properties ◽  
Image Processing ◽  
Composite Material ◽  
Intermetallic Compound ◽  
Side Surface ◽  
High Resolution Electron Microscopy ◽  
Hexagonal Structure ◽  
Second Phase ◽  
Resolution Electron ◽  
Compound Tial

In order to improve the mechanical properties of an intermetal1ic compound TiAl, a composite material of TiAl involving a second phase Ti2AIN was prepared by a new combustion reaction method. It is found that Ti2AIN (hexagonal structure) is a rod shape as shown in Fig.1 and its side surface is almost parallel to the basal plane, and this composite material has distinguished strength at elevated temperature and considerable toughness at room temperature comparing with TiAl single phase material. Since the property of the interface of composite materials has strong influences to their mechanical properties, the structure of the interface of intermetallic compound and nitride on the areas corresponding to 2, 3 and 4 as shown in Fig.1 was investigated using high resolution electron microscopy and image processing.

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