scholarly journals Monitoring the Quality of Laser Cutting

2018 ◽  
Vol 1 (1) ◽  
pp. 137-143
Author(s):  
Rastislav Bernát ◽  
Zoltán Záležák ◽  
Jozef Žarnovský ◽  
Norbert Kecskés ◽  
Milan Peniaško ◽  
...  
Keyword(s):  
Large Scale ◽  
Cutting Speed ◽  
Base Material ◽  
Dimensional Accuracy ◽  
Cutting Edge ◽  
Engineering Industry ◽  
Scale Production ◽  
Large Scale Production ◽  
The Impact

Abstract In engineering industry the production of components begins with separation of the base material and this technological operation can be time consuming, especially in large-scale production. Such production can be made more efficient by means of laser technology focusing on material cutting. Efficiency of cutting is determined not only by shortening of working time or energy saving, but also by the required cutting quality. In the paper we compare the impact of cutting speed changing and laser beam performance on the cutting edge quality. Based on requirements of dimensional accuracy and preset roughness of the cutting edge, we evaluated the cutting quality of laser in samples of different materials. Measured values of sample dimensions and roughness are compared in conclusions of the paper, where we estimate whether the samples meet specified requirements of dimensional accuracy and roughness of the cutting edge in order to make the production process more efficient.

scholarly journals Anaerobic Solid-State Fermentation of Soybean Meal With Bacillus sp. to Improve Nutritional Quality

2021 ◽  
Vol 8 ◽  
Author(s):  
Yanhui Yao ◽  
Hongya Li ◽  
Jia Li ◽  
Baocheng Zhu ◽  
Tongguo Gao
Keyword(s):  
Solid State ◽  
Solid State Fermentation ◽  
Soybean Meal ◽  
Nutritional Quality ◽  
Large Scale ◽  
High Yield ◽  
Scale Production ◽  
Large Scale Production ◽  
The Impact

The study evaluated the impact of fermentation with Bacillus sp. on the nutritional quality of soybean meal (SBM) and the changes of bacterial community structure during fermentation. High protease-producing strains were screened to degrade SBM macromolecular protein and anti-nutritional factors (ANFs). Unsterilized SBM then underwent an anaerobic solid-state fermentation method to evaluate the effects of fermentation. Results showed that for the nine high-producing protease strains that were screened, acid-soluble protein (ASP) contents in fermented SBM increased, with the highest value found to be 13.48%, which was fermented using strain N-11. N-11 was identified as Bacillus subtilis. N-11 fermentation reduced ANFs such as glycinin and β-conglycinin by 82.38 and 88.32%, respectively. During N-11 fermentation, the bacterial richness and diversity in SBM increased but not significantly. The high-yield protease strain B. subtilis N-11 selected in this experiment improved the nutritional quality of SBM through fermentation, and it can be used for industrial large-scale production.

Thermal Laser Separation – A Novel Dicing Technology Fulfilling the Demands of Volume Manufacturing of 4H-SiC Devices

2015 ◽  
Vol 821-823 ◽  
pp. 528-532 ◽  
Author(s):  
Dirk Lewke ◽  
Karl Otto Dohnke ◽  
Hans Ulrich Zühlke ◽  
Mercedes Cerezuela Barret ◽  
Martin Schellenberger ◽  
...  
Keyword(s):  
Experimental Data ◽  
Process Control ◽  
Tool Wear ◽  
Large Scale ◽  
State Of The Art ◽  
Scale Production ◽  
High Quality ◽  
Large Scale Production ◽  
Laser Separation

One challenge for volume manufacturing of 4H-SiC devices is the state-of-the-art wafer dicing technology – the mechanical blade dicing which suffers from high tool wear and low feed rates. In this paper we discuss Thermal Laser Separation (TLS) as a novel dicing technology for large scale production of SiC devices. We compare the latest TLS experimental data resulting from fully processed 4H-SiC wafers with results obtained by mechanical dicing technology. Especially typical product relevant features like process control monitoring (PCM) structures and backside metallization, quality of diced SiC-devices as well as productivity are considered. It could be shown that with feed rates up to two orders of magnitude higher than state-of-the-art, no tool wear and high quality of diced chips, TLS has a very promising potential to fulfill the demands of volume manufacturing of 4H-SiC devices.

scholarly journals Influência da vernalização de semente na produção, crescimento e desenvolvimento de plantas de lisianthus

2018 ◽  
Vol 39 (6) ◽  
pp. 2325 ◽  
Author(s):  
Maria Yumbla-Orbes ◽  
José Geraldo Barbosa ◽  
Wagner Campos Otoni ◽  
Marcel Santos Montezano ◽  
José Antônio Saraiva Grossi ◽  
...  
Keyword(s):  
Large Scale ◽  
Limiting Factor ◽  
Scale Production ◽  
Cut Flower ◽  
Cut Flowers ◽  
Flower Production ◽  
Commercial Scale ◽  
Large Scale Production ◽  
And Control

Flowering induction and control is a limiting factor when commercially producing cut flowers of lisianthus and seed exposure to low temperatures, a physiological event called vernalization, induces the differentiation of vegetative buds to reproductive buds, contributing to a flowering that is uniform and has quality. The objective of this study was to evaluate the influence of seed vernalization in three cultivars of lisianthus (Excalibur, Echo and Mariachi) for 12, 24, 36 and 48 days at temperatures of 5, 10 and 15°C, in the production and quality of buds, making this technology feasible to large-scale production. During cultivation it was observed that the lower the temperature and higher the vernalization period, the lower the cycle and the greater the number of plants induced to flowering for all three cultivars, and those are important features in the context of flower production in a commercial scale. The seeds subjected to vernalization originated plants that produce flower stems within the standards required by the market, showing that vernalization was efficient to induce flowering without affecting the quality of the buds. To produce lisianthus as a cut flower of quality, it is recommended seed vernalization of Mariachi and Echo cultivars for 24 days at 5°C and Excalibur for 36 days at 5°C.

scholarly journals Smoking control: challenges and achievements

2016 ◽  
Vol 42 (4) ◽  
pp. 290-298 ◽  
Author(s):  
Luiz Carlos Corrêa da Silva ◽  
Alberto José de Araújo ◽  
Ângela Maria Dias de Queiroz ◽  
Maria da Penha Uchoa Sales ◽  
Maria Vera Cruz de Oliveira Castellano
Keyword(s):  
Health Care ◽  
Health Care Professionals ◽  
Large Scale ◽  
Scale Production ◽  
Large Scale Production ◽  
Care Policies ◽  
Promising Area ◽  
Health Care Policies ◽  
Smoking Control

ABSTRACT Smoking is the most preventable and controllable health risk. Therefore, all health care professionals should give their utmost attention to and be more focused on the problem of smoking. Tobacco is a highly profitable product, because of its large-scale production and great number of consumers. Smoking control policies and treatment resources for smoking cessation have advanced in recent years, showing highly satisfactory results, particularly in Brazil. However, there is yet a long way to go before smoking can be considered a controlled disease from a public health standpoint. We can already perceive that the behavior of our society regarding smoking is changing, albeit slowly. Therefore, pulmonologists have a very promising area in which to work with their patients and the general population. We must act with greater impetus in support of health care policies and social living standards that directly contribute to improving health and quality of life. In this respect, pulmonologists can play a greater role as they get more involved in treating smokers, strengthening anti-smoking laws, and demanding health care policies related to lung diseases.

Polycultural System of Freshwater Fish in China

1982 ◽  
Vol 39 (1) ◽  
pp. 143-150 ◽  
Author(s):  
Lin Hao-Ren
Keyword(s):  
Large Scale ◽  
Feeding Habits ◽  
Fish Culture ◽  
Scale Production ◽  
Conventional Agriculture ◽  
Quality Of Water ◽  
Large Scale Production ◽  
Major Development ◽  
Lh Rh

China is a country in which fish culture is closely integrated with conventional agriculture. Its success depends on the firm base of traditional practices as well as the introduction of many innovations. Among them, polyculture is probably the most important reason for fish culture's success. The major advantage of polyculture is to utilize fully the space and food available in the pond and to optimize interactions between compatible species with different feeding habits and ecology. The different types of polycultural pond stocking are adapted in accordance with (1) the climate, (2) quality of water supply and fertility of pond, (3) availability of fish fry and fingerlings, (4) availability of food and fertilizer, and (5) market requirements. The artificial propagation of cultured fishes and large-scale production of fry and fingerlings are the major development of Chinese fish culture in recent years. The application of LH–RH analogue as a new highly effective ovulating agent for fish reproduction has been carried furthest in China.Key words: China, fish polyculture, Chinese carp, induced spawning, LH–RH analogue, fry, fingerling, fish production

scholarly journals GROWING OF VIRUS-FREE POTATO SEED TUBERS IN THE AEROPONIC PLANT

2020 ◽  
Vol 17 (35) ◽  
pp. 791-799
Author(s):  
Rafael ISMAGILOV ◽  
Ilgiz ASYLBAEV ◽  
Nuriya URAZBAKHTINA ◽  
Denis ANDRIYANOV ◽  
Firdavis AVSAKHOV
Keyword(s):  
Large Scale ◽  
Viral Infections ◽  
Potato Production ◽  
Poor Quality ◽  
Point Of View ◽  
Potato Seed ◽  
Scale Production ◽  
Planting Material ◽  
Large Scale Production

Throughout the world, potatoes, as a food crop, are very important. One of the main reasons for the poor quality of planting material, yield and potatoes themselves are viral infections. The use of virus-free seed material is one of the high-potential ways to increase the yield and efficiency of potato production. Aeroponics is a promising direction in obtaining a virus-protected crop. This study aimed to assess the potential and improve the technology for growing healthy mini-tubers of potatoes using the aeroponic method, which is a safe and economical method. Compared to the usual method of growing crops, aeroponics assumes lower water and energy costs per unit of production, as well as excludes soil diseases of the plant and does not allow damage to the tuber caused by pests. For growing different varieties of crops in different regions, artificial conditions such as additional lighting in greenhouses can be easily provided. In this study, economic calculations have shown that, from a practical point of view, Aeroponics technology may be appropriate for large-scale production of seed potatoes.

scholarly journals Balancing Boutique-Level Quality and Large-Scale Production: The Impact of “More Product, Less Process” on Digitization in Archives and Special Collections

2012 ◽  
Vol 13 (1) ◽  
pp. 50-63 ◽  
Author(s):  
Shan C. Sutton
Keyword(s):  
Large Scale ◽  
Scale Production ◽  
Special Collections ◽  
Professional Journals ◽  
Large Scale Production ◽  
The Subject ◽  
The Impact ◽  
Archival Processing

Introduction Few writings within the realms of archives and special collections have reverberated throughout the field to the degree of Mark A. Greene and Dennis Meissner’s 2005 article “More Product, Less Process: Revamping Traditional Archival Processing.”1 Its clarion call to shift archival arrangement and description away from time-consuming, detailed processes toward rapid, minimalist strategies was met with both cheers and groans that continue unabated. In a sign of its ubiquity, the approach advocated by Greene and Meissner is now simply referred to as “MPLP,” and its implementation is the subject of ongoing discussion in numerous venues, including professional journals, conference . . .

The impact of precursor water content on solution-processed organometal halide perovskite films and solar cells

2015 ◽  
Vol 3 (37) ◽  
pp. 19123-19128 ◽  
Author(s):  
Bert Conings ◽  
Aslihan Babayigit ◽  
Tim Vangerven ◽  
Jan D'Haen ◽  
Jean Manca ◽  
...  
Keyword(s):  
Solar Cells ◽  
Water Content ◽  
Large Scale ◽  
Photovoltaic Performance ◽  
Scale Production ◽  
Large Scale Production ◽  
Organometal Halide Perovskite ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
The Impact

In this paper, the impact of the water content (up to 10 vol%) in DMF-based precursors on organometal halide perovskites is investigated. The photovoltaic performance is found not to be affected, thus relaxing the conditions for large-scale production of this upcoming photovoltaic technology.

On the Influence of the Speed-Feed Interaction on the Wear Rate and Life of Multiple Coated Carbide Inserts Considering Rough Turning Process

2014 ◽  
Vol 575 ◽  
pp. 431-436 ◽  
Author(s):  
M.S. Alajmi ◽  
S.E. Oraby
Keyword(s):  
Wear Rate ◽  
Cutting Speed ◽  
Dimensional Accuracy ◽  
Cutting Edge ◽  
Depth Of Cut ◽  
Machined Surface ◽  
Edge Wear ◽  
The Impact ◽  
Rough Turning ◽  
Coated Carbide

The impact of the cutting parameters; speed, feed, and depth of cut on the wear and the life of the cutting edge has long been a matter of debate among researchers. The cutting speed has long been agreed to have a prime influence in such a way that increasing speed leads to higher wear rate. Depth of cut has been concluded by majority of studies to have insignificant or negligible impact on edge wear and deformation. Despite its long established influence on the roughness of the machined surface, the effect of cutting feed on edge wear and deformation still requires more explanation. Cutting feed is a crucial parameter governing the product surface finish and dimensional accuracy and, therefore, its attitude during machining should be fully understood. This study presents experimental and modeling approach to detect the feed-wear functional interrelation considering various domains of the cutting speed. Results showed that the impact of the cutting feed is firmly associated with the level of cutting speed employed. Speed-feed interaction proved to be responsible for the performance of the cutting edge during machining.

scholarly journals Conservation of Mineral Elements in Maize Grains by a Triple Bagging System and Biopesticide (Lippia multiflora Moldenke and Hyptis suaveolens Poit Leaves).

2020 ◽  
Vol 8 (3) ◽  
Author(s):  
Gnande Romaric Die ◽  
Kouamé Olivier Chatigre ◽  
Ibrahim Fofana ◽  
N’guessan Verdier Abouo ◽  
Godi Henri Marius Biego
Keyword(s):  
Large Scale ◽  
Principal Component ◽  
Mineral Elements ◽  
Scale Production ◽  
Lippia Multiflora ◽  
Large Scale Production ◽  
Hyptis Suaveolens ◽  
Storage Methods ◽  
Central Composite

Maize (Zea mays) is a staple food in the traditional diet of rural populations in Côte d'Ivoire. It is a source of many minerals. However, inefficient and sometimes harmful storage methods hamper its large-scale production in Côte d'Ivoire. It is in this context that a triple bagging system associated or not with biopesticides of plant origin (Lippia multiflora and Hyptis suaveolens leaves) was proposed in this study to evaluate its efficacy on the conservation of mineral quality of grains over an 18-month period following a 3-factor central composite design (CCD). The first CCD factor consisted of 6 observation periods: 0; 1; 4.5; 9.5; 14.5 and 18 months. The second factor, the type of treatment, included 1 control lot with a polypropylene bag (TB0SP) and 9 experimental lots including 1 lot in triple bagging without biopesticides (TB0P) and the remaining 8 lots containing variable proportions and/or combinations of biopesticides (TB1 to TB8). And finally, the third factor was the combination of the two biopesticides with % Lippia multiflora as a reference. The results indicate that the shelf life, ratio and combination of biopesticides significantly (P < 0.05) influence the mineral quality of grain maize. Principal component analysis revealed that the addition of at least 1.01% biopesticides (leaves of Lippia multiflora and Hyptis suaveolens) in triple bagging systems improves preservation efficiency and preserves the mineral quality of the grain over a period of 15 months as opposed to triple bagging without biopesticides where the mineral elements are preserved during the first 10 months of storage. However, this preservation of mineral quality is more pronounced in these storage systems with combinations of biopesticides (of which the proportion is greater than or equal to 3.99%) or with 2.5 % of individual biopesticides.

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