• Asian-Australasian Journal of Animal Sciences
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• v.15 no.3
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• pp.377-381
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• 2002

The growth rate, feed conversion efficiency and carcass characteristics of nine native Malpura (M) and eight Awassi ${\times}$ Malpura half bred (AM) male lambs were compared under intensive feeding on 60:40 concentrate and roughage based composite feed. Weaning body weight was similar in the two genetic groups while finishing body weight, total body weight gain and average daily gain during the experiment were higher (p<0.01) in AM than M lambs. The feed conversion efficiency was lower in M than AM lambs with 15.7 and 19.8 per cent feed conversion efficiency, respectively, in the two genetic groups. The dressing yield in terms of preslaughter weight or empty live weight was however similar in the two genetic groups. The loin eye area was also greater (p<0.01) in AM than M lambs. The cutability was similar for the two groups amounting to 33.2, 13.3, 13.2, 23.3 and 16.6% of half carcass, respectively, for leg, loin, rack, neck and shoulder and breast and foreshank. On an average the separable lean, fat and KOH bone content of the half carcass were 48.3, 16.8 and 23.3% for native M and 54.1, 15.0 and 19.0% for AM lambs, respectively. It is concluded that growth rate and feed conversion efficiency were better in Awassi ${\times}$ Malpura half bred than native Malpura lambs while dressing yield and cutability of standard cuts were similar in the two genetic groups.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.35 no.2B
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• pp.263-268
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• 2010

This paper shows the key management system in a small metallic cabinet using a small UHF RFID tags. Each key chain with a key has a custom-designed small RFID tag antenna. There are 6 metallic racks in the small cabinet, and each rack can hold 60 key chains. Therefore, the small cabinet can hold 360 key chains with tags. The 360 key chains with RFID tags in a cabinet are recognized by RFID key chain management system. Even though it is hard to recognize 360 tags in the a cabinet, this RFID key management system with small custom designed RFID tags can recognize all the tags in the small cabinet. To read the all the tags, the locations of antennas and tag shapes are optimized. The reading rates based on the bios-version of the reader and the locations of the reader antennas are compared.

• International Journal of Naval Architecture and Ocean Engineering
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• v.9 no.3
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• pp.239-245
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• 2017

As a new technical approach, wave energy converter by using vertical motion of water in the multiple water chambers were developed to realize actual wave power generation as eco-environmental renewable energy. And practical use of wave energy converter was actually to require the following conditions: (1) setting up of the relevant device and its application to wave power generation in case that severe wave loading is avoided; (2) workability in installation and maintenance operations; (3) high energy conversion potential; and (4) low cost. In this system, neither the wall(s) of the chambers nor the energy conversion device(s) are exposed to the impulsive load due to water wave. Also since this system is profitable when set along the jetty or along a long floating body, installation and maintenance are done without difficulty and the cost is reduced. In this paper, we describe the system which consists of a float, a shaft connected with another shaft, a rack and pinion arrangement, a ratchet mechanism, and rotary type generator(s). Then, we present the dynamics model for evaluating the output electric power, and the results of numerical calculation including the effect of the phase shift of up/down motion of the water in the array of water chambers aligned along the direction of wave propagation.

• International Commerce and Information Review
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• v.11 no.1
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• pp.441-463
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• 2009

FTA is acting as a central axis to accomplish the worldwide trade liberalization as FTA has been globally spreading with competition. As the global economic depression and the trend of new protectionism are getting grave, and the trade liberalization of GATT and WTO is getting delayed, FTA is spread as an alternative. FTA is often called as RTA: Regional Trade Agreement(regional free trade agreement) which takes place mainly around the neighbor nations or regular districts, and these days, it is tending towards agreements between long distant nations, so, it's not limited to the regular districts. Among the FTA agreement items, in addition to the customs abolition, the opening and investment liberalization of service market like finance, communication etc., intellectual property rights are included in the government's target range. Korea also is actively proceeding FTA conclusion. Korean government has concluded the agreements with Singapore, european nations beginning from Chile concluded in 2003, and is proceeding more the negotiations with Japan, Canada, Mexico, India etc. Now in 2009, FTA of Korea-United States is actually waiting for just the passage of assembly ratification. But, if FTA becomes effective, because our domestic market should be entirely opened, it is expected that the blow against our domestic agricultural field which is weak, compared with that of the United States, a nation of worldwide agricultural products, is not an ordinary one. According to it, we need a whole plan to cope with, so, the purpose of this study is to suggest the strategy by comparing and analysing the Korean agricultural competitive power, and to find the other development stratagem.

• Applied Chemistry for Engineering
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• v.3 no.1
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• pp.148-155
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• 1992

For the enhancement of the concrete durability, we developed high - durable portland cement (ACTPC) by physical treatment of ordinary portland cement with asphalt and carbon black. In this research, the hydration reaction characteristics of ACTPC were studied by using SEM, X-Ray, Conduction Micro Calolimeter etc. When the ACTPC is mixed with water, it is believed the asphalt films on cement particles suppress the early stage of hydration reactions of cements, because the films hinder the contact with water and the elusion of soluble ions from particles. But the carbon blacks on the cement particles accelerated the hydration reactions of cement after a while, because the micro particles can be used as seed crystals in $CaO-SiO_2-H_2O$ gel formation.

• Applied Chemistry for Engineering
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• v.3 no.1
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• pp.46-52
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• 1992

$TiO_2/SO_4{^{2-}}$ was prepared by precipitation from the mixed solution of titanium chloride and hydrochloric acid followed by modification with sulfuric acid. The characterization of prepared catalyst was performed by using IR, XPS, XRD and DT-TGA. Infrared spectra of $TiO_2/SO_4{^{2-}}$ showed bidentate sulfate ion coordinated to the surface of $TiO_2$. The acid strength of modified catalyst was at least $H_0{\leq}-14.52$, showing the superacidic properties which are attributed to the double bond nature of S=O of the complex formed by the interaction of $TiO_2$ with sulfate ion. For $TiO_2/SO_4{^{2-}}$, the specific surface area increased and the transition from the amorphous to anatase phase occurred at a higher temperature, as compared with pure $TiO_2$.

• Korean Journal of Environmental Agriculture
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• v.13 no.1
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• pp.90-97
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• 1994

This experiment was conducted to improve the analytical method of tricyclazole- and IBP-combined dust. When the tricyclazole and IBP active ingadients were analyzed by the official analytical method, their recovery rates were 89.5 and 100%, respectively. A reason of the lower recovery rate in tricyclazole was found to be due to strong binding to the minor inorganic compoments, $Al_2O_3$, $Fe_2O_3$, CaO and MgO, of talc and kaoline. However, addition of 0.2% dimethylamine to extraction solvent for tricyclazole- and IBP-combined dust effectively raised the recovery rate of tricyclazole by providing higher basicity than tricyclazole. We have suggest an improved analytical method which is applicable to effective and simultaneous analysis of the active ingradients of tricyclazole- and IBP-combined dust.

• Journal of The Korean Society of Agricultural Engineers
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• v.59 no.3
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• pp.71-81
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• 2017

Organic dust generated inside livestock facilities includes toxic organic matters such as bacteria and endotoxin. Dust can cause respiratory disease for worker and livestock, and consequently, degradation of welfare and productivity. Influence of dust on livestock workers has been studied since the 1970s. However, exposure limit for cattle farmer has not been established, unlike exposure limit for pig and poultry farmer. Furthermore, study on air quality inside livestock facility, especially inside dairy farm has been rarely conducted in Korea. In this study, dust concentration of TSP, PM10, inhalable and respirable dust has been monitored in the commercial dairy house according to location and working activities. Bedding material inside the stall was one of the major sources of dust. The amount of dust was related to water content level of the bedding material. Dust concentration was relatively high in leeward location, and the highest concentration was measured during TMR mixing process. The maximum value of inhalable dust concentration was 29.1 times higher than the reference value as fine particles drop to the TMR mixer. Dust generated by TMR mixing was presumed to decrease by adjusting moisture and drop height of feed.

• Journal of Veterinary Clinics
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• v.21 no.4
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• pp.363-368
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• 2004

To investigate the effects of seeding during freezing procedure on post-thaw viability, motility, and acrosome integrity of boar spermatozoa, semen from 5 Yorkshire boars were collected for this experiment. Raw semen were diluted with Merck I, subsequently added with cooling diluent containing lactose and egg yolk and with freezing diluent containing glycerol. The diluted semen were frozen on the rack in the styrofoam box filled with liquid nitrogen at the distance of 5 cm or I cm above LN2 level. Seeding was performed to only a group of straws frozen at 5 cm away on the surface of LN2. The frozen semen were thawed in $50^{\circ}C$C water and the viability and local motility were analyzed by sperm analysis imaging system. A part of thawed semen was taken for the examination of morphology of apical ridge of the acrosome to compare with the effect of seeding between the seeding-treated and non treated groups. I. Post-thaw viability was considerably higher in seeding-treated sperm than non-seeding group (p<0.01), however, no difference of local motility was obtained among the groups. 2. At three hours after thawing, viability was also higher in seeding-treated group than non-treated group (p<0.05), along with no difference of motility among the groups. 3. Higher normal acrosome integrity was obtained in the seeding-treated sperm than non-treated groups (p<0.01). 4. Between non-seeded groups, higher normal acrosome integrity was obtained in the sperm group frozen at 5cm upper on the surface of LN2 than that frozen at 1cm away (p<0.01). These results indicated that seeding treatment during freezing boar spermatozoa was beneficial to post-thaw viability and normal acrosome integrity.

• Journal of the Korea Society of Computer and Information
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• v.11 no.5 s.43
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• pp.299-310
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• 2006

The purpose of this study is to analyze an effect for the resident satisfaction and quality of life against public administrative service to provide for community residents by the rural-urban consolidation community in the case of 3 cities (Sunchon, Gwangyang, Naju) that have consolidated since January 1995 and Yeosu city that has consolidated in March 1998. This study attempted to empirical survey and analyzed 270 number of 4 cities residents samples in Jeollanamdo through SPSSWIN. As a result of this factor analysis, equality of public administrative service, counterplan of residents, efficiency and access of administrative organ are showed as factors are associated with the satisfying degree of public administrative services for community residents.