• Journal of international Conference on Electrical Machines and Systems
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• v.1 no.3
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• pp.321-329
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• 2012

Providing variable load for testing a motor in high speed conditions is usually a difficult task. The eddy current brake can be used in application of load testing of motors. This paper deals with construction of a novel claw pole eddy current brake which is employed as a load for a DC counter rotating motor (CRM). These kinds of motors have two inner and outer shafts that rotate in opposite directions simultaneously, which are particularly suitable for under water propulsion systems. The prototype 45KW eddy current brake consists of two parts. One of them is installed on the inner shaft of the 60KW DC CRM and the other one is installed on its outer shaft. The simulation and experimental results with prototype brakes are also analyzed by using MATLAB/Simulink and the operational characteristic of the brake is demonstrated as a function of the motor speed and current of the magnetic poles.

• Elastomers and Composites
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• v.50 no.3
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• pp.189-195
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• 2015

In this study, we prepared epoxidized poly ethylene-ter-1-decene-ter-divinylbenzene (Epo-PEHV) as a reactive compatibilizer to prevent phase separation phenomenon which occurs upon blending polypropylene (PP) and ethylene-vinyl alcohol copolymer (EVOH). Firstly, PEHV was prepared under high catalyst activity according to content of catalyst and cocatalyst. After then, we modified vinyl group of the terpolymer with epoxy group. We observed that the terpolymer was successfully epoxidized by 1H-NMR and FT-IR analysis. The Epo-PEHV was added by 2, 5, 10% in PP/EVOH blends. The morphologies and mechanical properties of PP/Epo-PEHV/EVOH blends were analyzed by SEM and UTM, respectively. Epo-PEHV enhanced the interfacial adhesion of PP and EVOH blends.

• The Research Journal of the Costume Culture
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• v.4 no.2
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• pp.187-206
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• 1996

The Purpose of this study is to analyze the clothing excavated in Xinjinag, concerned with the study of clothing culture in Central Asia. The results are as follows : A headwear is a corn hat or round hat, the material is field, fur or woolen textiles. For hair accessories, feathers or wooden pins were used. The corn hats of the Scythians and the Huns also had same design and did not change even after being influenced from the culture of Han Dynasty. A woman's hair styles was many strips of braid, a man's hair style was a braid or a topknot. Regarding the clothing, a woman wore pull-over type and a man wore caftan for a jacket. Both a man and a woman wore widened coat and trousers as well as felt socks and leather boots, and longer socks than boots are the characteristics of the clothing of nomadic horsemen. The textiles was mainly wool, but silk was used for coats, socks and gloves in high society imported from China through the Silk Road after the 2nd century B.C. Compared with Korea clothing, a corn hat, widened coat, trousers and leather boots are similar with those of Koguryo. The influence of western culture is shown in a man's short hair, animal design, W1-Kum, a woman's pull-over type and a round neckline.

• Archives of Pharmacal Research
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• v.19 no.3
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• pp.173-177
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• 1996

The Pneumococcus, Streptococcus pneumoniae, has an ample polysaccharide (PS) capsule that is highly antigenic and is the main virulence factor of the organism. The capsular PS is the source of PS vaccine. This investigation was undertaken to optimize the culture conditions for the production of capsular PS by type 4 pneumococcus. Among several culture media, brain heart infusion (BHI) and Casitone based medium were found to support luxuriant growth of pneumococcus type 4 at the same level. Therefore in this study, the Casitone based medium was used to study optimization of the culture condition because of BHI broth's high cost and complex nature. The phase of growth which accomodated maximum PS production was exponential phase. Concentrations of glucose greater than 0.8% did not enhance growth or PS production. Substitution of nitrogen sources with other resources or supplementation of various concentrations of metal ion (with the exception of calcium, copper, and magnesium ions) had adverse effects on growth and PS production. On the other hand, low level aeration and supplementation of 3 mg/l concentration of asparagine, phenylalanine, or threonine were beneficial for increased PS production. The synergistic effect of all the favorable conditions observed in pneumococcal growth assays provided a two-fold cumulative increase in capsular PS production.

• International Journal of Advanced Culture Technology
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• v.9 no.1
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• pp.52-57
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• 2021

Most internet companies in China are learning from Xiaomi Corporation's management model and to improving their organizational structures and human resource management practices. This study analyzed the development situation of Chinese Internet economy and the Internet thinking of Xiaomi which is a role model of Chinese Internet companies. In addition, we studied Xiaomi's organizational structure, human resource management, employee training, performance management and incentive system. In particular, Xiaomi's human resource management system has a great influence on the company's high performance and efficient service culture. Furthermore, the organization of Xiaomi is horizontally divided into three floors (7 key founders, department heads, and employees), each floor is managed by one founder. Xiaomi is interested in and considers not only the work of new employees, but also personal issues, and is concerned with the work of others in performance management and shares responsibility. Xiaomi adopts a unique and rational human resource management model, guaranteeing a lot of work autonomy for employees, and improving organizational performance.

• Food Science of Animal Resources
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• v.43 no.1
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• pp.1-9
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• 2023

The expansion and advancement of the meat product market have increased the demand for fermented sausages. A typical method for manufacturing high-quality fermented sausages is using a starter culture, which improves the taste, aroma, and texture. Currently, the starter culture for manufacturing fermented sausages is mainly composed of microorganisms such as lactic acid bacteria, yeast, and fungi, which generate volatile compounds by the oxidation of fatty acids. In addition, protein decomposition and changes in pH occur during the fermentation period. It can positively change the texture of the fermented sausage. In this review, we discuss the requirements (improving food safety, the safety of starter culture, enzyme activity, and color) of microorganisms used in starter cultures and the generation of flavor compounds (heptanal, octanal, nonanal, hexanal, 2-pentylfuran, 1-penten-3-ol, and 2-pentanone) from lipids. Furthermore, quality improvement (hardness and chewiness) due to texture changes after starter culture application during the manufacturing process are discussed.

• Journal of the Korean Society of Clothing and Textiles
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• v.29 no.3_4 s.141
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• pp.569-575
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• 2005

The objective of this study is to consider the concept of postmodernism and the characteristics concerning the stage of the development, and to investigate the effect of the postmodernism on the clothing. Postmodernism is the result of the late capitalism and its characteristics are the narrative, mixture and deconstruction. First, since it is impossible to express the social culture of various society through one theoretical disclosure, the novel value on the narrative is provided and its characteristics arise. Hence, the society becomes afford to accept the other and provides the novel value to the absolute sub-concept. Second, the recognization and emphasis of the narrative in the post modem society bring about the repulsion as to the strict classification between the high culture and low one established from modernism and the closure between each genre of the art, and this causes to raise the composed characteristics which borrow or mix the style and image of different age and culture. Third, the deconstructive feature arises which eliminates the boundary between the high and low class, the past and future and the destruction and construction. This means not only anther recomposition but also skeptical attitude about it.

• Journal of Microbiology and Biotechnology
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• v.10 no.6
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• pp.784-788
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• 2000

Hypolipidemic effect of exo-polymers(EPs) form submerged mycelial culture of Cordyceps militaris was investigated in male Sprague-Dawley rats. For a dose-dependent study, EPs were administered at the level of 50-100 mg/kg body weight (BW) and the data was compared with the saline administered control group. A significant reduction of both the plasma total cholesterol (TC) and triglyceride (TG) was registered under the influence of EPs. It reduced the lowe density lipoprotein (LDL) cholesterol level as much as 40.5%. Levels of high density lipoprotein (HDL) choloesterol did not vary significantly within the different experimental groups, but the HDL: TC ratio showed consistently a high value with the increasing dose. The effects of cultural conditions (pH and temperature) in mycelial growth and EPs production were studied. Both the biomass and EPs were produced in a wide range of pH and temperature.

• Microbiology and Biotechnology Letters
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• v.28 no.6
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• pp.329-333
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• 2000

Alkaline bacterium producing a high pro-tease activity at low temperature was isolated by using enrichment culture from soil samples and identified as Bacil-lus sp. WRD-1 Cell growth was maximal at 10 hours and the optimal initial pH and culture time of culture condition for enzyme production was pH 7 and 10 hours, respectively. Temperature range of high enzyme activity were $10~40^{\circ}C$. The optimal pH and temperature for the enzyme activity were pH9 and $30^{\circ}C$.

• Journal of Microbiology and Biotechnology
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• v.12 no.3
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• pp.406-410
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• 2002

A new spin filter consisting of $50{\mu}m$ (nominal pore size) depth fitters rolled on a stainless steel grid was developed, using Saccharomyces cerevisiae as a model suspension cell to evaluate the spin filter performance. In a 1.8-1 fermentor with a rotation speed of 300 rpm and perfusion rate of 4 ml/min, a cell concentration of 49 g/l and ethanol concentration of 45 g/l from 100 g/l glucose could be obtained in a perfusion culture. The major mechanisms for cell separation used by the large-pore spin filter appeared to be centrifugal force and pivotal movement of the cells in the spin filter.