scholarly journals Mass production technology of the compound aspheric lens.

1986 ◽  
Vol 52 (6) ◽  
pp. 979-982
Author(s):  
TOSHIHIDE DOHI
Keyword(s):  
Production Technology ◽  
Mass Production ◽  
Aspheric Lens

Development of Production Technology for Membrane-Electrode Assemblies With Radical Capturing Layer

2013 ◽  
Vol 10 (1) ◽  
Author(s):  
Toshiro Kobayashi ◽  
Etsuro Hirai ◽  
Hideki Itou ◽  
Takuya Moriga
Keyword(s):  
Production Technology ◽  
Mass Production ◽  
Catalyst Layer ◽  
Gas Diffusion ◽  
Membrane Electrode ◽  
Continuous Formation ◽  
Forming Technology ◽  
Membrane Electrode Assemblies ◽  
Electrode Assemblies ◽  
Opening Ratio

This paper describes the development of mass-production technology for membrane-electrode assemblies (MEA) with a radical capturing layer and verifies its performance. Some of the authors of this paper previously developed an MEA with a radical capturing layer along the boundaries between the electrode catalyst layer and the polymer membrane to realize an endurance time of 20,000 h in accelerated daily start and daily stop (DSS) deterioration tests. Commercialization of these MEAs requires a production technology that suits mass production lines and provides reasonable cost performance. After developing a water-based slurry and selecting a gas diffusion layer (GDL), a catalyst layer forming technology uses a rotary screen method for electrode formation. Studies confirmed continuous formation of the catalyst layer, obtaining an anode/cathode thickness of 55 μm (+10/−20)/50 μm (+10/−20) by optimizing the opening ratio and thickness of the screen plate. A layer-forming technology developed for the radical capturing layer uses a two-fluid spraying method. Continuous formation of an 8 μm thick (±3 μm) radical capturing layer proved feasible by determining the appropriate slurry viscosity, spray head selection, and optimization of spraying conditions.

Technology of Low Cost Production of FGMs

2005 ◽  
Vol 492-493 ◽  
pp. 761-764 ◽  
Author(s):  
Katsuto Kisara ◽  
Masayuki Niino ◽  
Hironori Noguchi
Keyword(s):  
Research And Development ◽  
Production Technology ◽  
Induction Heating ◽  
Mass Production ◽  
Low Cost ◽  
Production Technique ◽  
Drying Process ◽  
Graded Layers ◽  
Sintering Method ◽  
Sps Sintering

In this paper, we introduced research and development of technology of low cost production of FGMs. This research is designated for development of mass production technology for production of ceramic wares with induction heating (IH) function. Slurry lamination method has advantage in forming graded layers due to its simplicity and easiness. However, this method has a disadvantage to generate cracks during drying process. Therefore, freeze-dry in vacuum was introduced in drying process of slurry lamination. By doing so, mass production could be achieved. In this trial production, we adopted SPS sintering method to production technique. In the future, we will further develop other applications of FGMs into industrial products.

scholarly journals A New Mass Production Technology for High-Efficiency Thin-Film CIS-Absorber Formation

2014 ◽  
Vol 4 (2) ◽  
pp. 687-692 ◽  
Author(s):  
Volker Probst ◽  
Immo Koetschau ◽  
Emmerich Novak ◽  
Axel Jasenek ◽  
Heinz Eschrich ◽  
...  
Keyword(s):  
Thin Film ◽  
Production Technology ◽  
Mass Production ◽  
High Efficiency

scholarly journals Deployment of Continuous Miner in Under Ground Coal Mine – A Case Study of Sarpi Mine.

2021 ◽  
Author(s):  
Subrata Samanta ◽  
Rabindra Kumar Sinha ◽  
Pulak Baran Chakrabarty ◽  
Hemant Kumar
Keyword(s):  
Coal Seam ◽  
Production Technology ◽  
Mass Production ◽  
Strata Control ◽  
Continuous Miner ◽  
Use Of Technology ◽  
Roof Fall ◽  
Underground Coal Mines

Abstract The continuous miner technology (CMT) is being adopted extensively in underground coal mines of India as Mass Production Technology (MPT). This technology potentially eliminates the two-unit operating, namely the drilling and blasting. This elimination helps for better strata control and avoids the drillers working in unsafe conditions, maybe under the loose coal roof. This CMT improves the quality of the coal extracted and increases the output per man shift (OMS) by reducing the deployment of face crew. It also reduces the accident as it is operated by remote and workforce exposure to faces is limited. The method also helps for better roof and side control, thus preventing side and roof fall danger. With the changing time now, continuous miners of different heights are available, which helps for optimum use of technology to mine out varying insitu height of coal seam. This paper discusses the performance of the CMT in the Sarpi mine and compares the technology available globally.

Optimal mass production technology for sporulation of Verticillium lecanii and Trichoderma harzianum

2015 ◽  
Vol 4 (1) ◽  
pp. 296-302
Author(s):  
Saba Hasan
Keyword(s):  
Production Technology ◽  
Trichoderma Harzianum ◽  
Mass Production ◽  
Fungal Species ◽  
Biocontrol Agents ◽  
Verticillium Lecanii ◽  
Complete Medium ◽  
Liquid Media ◽  
Solid Substrates ◽  
Viability Percentage

The present study aims at optimization of a suitable mass production technology for growth and sporulation of the biocontrol agents Verticillium lecanii and Trichoderma harzianum. Combinations of various natural solid substrates (Rice, Maize, Arhar, Defatted Soybean, Gram) and laboratory media (SMYA, Complete media, SDA, Czapek’s Dox media ) were evaluated for growth and sporulation of V. lecanii and T. harzianum. Data on CFU, concentration of propagules, dry mycelial weight, conidia production and conidia yield were analyzed. It was observed that among the substrate types tested, the fungal strains grew better and produced high quantity of spores in Rice as growth medium after 21 days of incubation followed by Maize and Arhar. The best liquid media which supported maximum conidial production was SMYA and Complete medium. Also, rate of germination of spores as well as their viability at different aeration rates was tested. It was observed that maximum length of germ tube in minimum duration was observed in Rice as substrate. The viability percentage of the biocontrol agents produced at various aeration rates and agitation speeds showed that change in aeration and agitation did not significantly affect spore viability. Results demonstrated that the fungal species could be rapidly produced with a high conidial yield on natural solid substrates as compared to liquid media by fermentation technology.

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