• Journal of Preventive Medicine and Public Health
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• 제22권2호
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• pp.268-275
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• 1989

The studies on the standard plate count, most probable number(MPN) and isolation of the Enterobacteriaceae, especially Salmonella species from stream waters of Kyong-Ju city were carried out from June to July, 1988. The relationship between water temperature, weather and standard plate count were observed. The locations where all of the MPN was higher than 1,600 were Mun-chon bridge, Wol-song bridge, Go-hun bridge and the area adjoining the Hyong-san river. The higher the water temperature, the more the viable counts without rain. Bacteriological survey of the Salmonella species was performed with the total 80 specimens isolated from 16 areas which are the main streams in Kyong-Ju city. The author identified S strains(2.36%) of Salmonella typhi, 5 strains(2.3%) of Salmonella paratyphi, 2 strains(1.42%) of Salmonella paratyphi B, 63 strains(29.72%) of other Salmonella groups by biochemical tests and serotyping tests with slide agglutination.

• Defense and Technology
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• 1호통권263호
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• pp.42-51
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• 2001

전자파특화연구센터는 우리 나라 국방분야의 기초연구를 강화하기 위한 Plan에 의해서 1994년 12월 국방부 위촉으로 포항공대에 설립되어 현재 1994년 12월부터 1997년 12월까지 1단계 연구를 완료하고, 1998년 1월부터 2000년 12월까지 2단계의 연구가 완료된 시점에 와있다. 2001년부터는 3단계 연구가 계획되어 있어서 우리 나라 전자파분야 국방연구의 중추적인 역할을 담당하고 있다. 이 글에서는 본 센터의 설립취지, 역할, 연구내용 등에 관한 간략한 소개를 드리고자 한다.

• Korea Petroleum Association Journal
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• 6호통권184호
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• pp.32-37
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• 1996

올해 석유정제시설에 대한 정기보수가 지난 5월 6일부터 시작하여 오는 11월까지 연보수일수 2백 21일간 상압증류시설에 대한 정기보수를 실시하고 있다. 올해 석유정제시설에 대한 정기보수는 유공등에서 작년에 정기보수를 실시하지 않았던 일부 시설의 정기보수를 금년도에 실시함에 따라 연간 정기보수일수가 지난해의 1백 72일보다 49일이 늘어났다. 정유공장의 정기보수는 계절적인 영향으로 대부분 5-6월에 실시하고 있으며, 올해의 경우에도 정기보수가 5-6월에 집중됨에 따라 6월에는 국내 총 생산능력의 23.5%에 해당하는 1천4백10만배럴의 생산이 감소할 전망이다. 각 정유사의 정기보수 절차와 과정등을 알아본다. <편집자 주>

• 주택과사람들
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• 47호통권64호
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• pp.91-108
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• 1995

[ ${\circ}$ ] 대한건설협회는 전국 1,650개 건설현장을 대상으로 총 164개 건설직종에 대한 건설임금 조사결과를 별첨과 같이 발표했다. ${\circ}$ 이날 발표된 건설노임은 국가를 당사자로하는 계약에 관한 법률 시행 규칙에 의거 정부공사의 예정가격 작성시 노임단가로 이달말부터 올해 12월말까지 적용하게 된다. ${\circ}$ 동조사 결과. -조사직종 164개의 평균임금은 60,178원으로 ${\cdot}$ 94년 5월에 비해 $11.2{\%}$ 상승, 94년 9월에 비해 $9.5{\%}$ 상승. -공사직종 120개 평균임금은 56,604원으로 ${\cdot}$ 94년 5월에 비해 $9.3{\%}$, 94년 9월에 비해 $9.5{\%}$ 상승함.

• The monthly packaging world
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• 통권169호
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• pp.50-52
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• 2007

REACH는 지속가능한 화학물질관리의 기본 축이 되는 법령으로서 현재 및 미래 세대의 건강과 환경을 보존하는 동시에 화학산업의 경쟁력을 높이기 위해 제정된 유럽연합의 신 화학물질 통합관리 제도이다. 신화학물질 관리정책의 핵심인 REACH 제도는 2003년 10월 EU지뱅위원회(안)이 발표된 후 3년여 간의 토론을 거친 수정안이 2006년 12월 18일 EU이사회에서 만장일치로 최종 채택되었다. 2006년 11월~12월 2차 독회와 표결을 거쳐 REACH 최종법령은 2007년 6월부터 시행됨에 따라 EU와 주요 국가의 산업체가 긴박하게 움직이고 있는 상황이다. 본 고에서는 REACH 제도 도입 배경 및 최근 국제 동향에 대해 살펴보도록 한다.

• Journal of The Korean Society of Grassland and Forage Science
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• 제24권2호
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• pp.115-122
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• 2004

This study was conducted to investigate the effect of the seeding and harvesting dates on the growth characteristics, dry matter yield and quality of com for silage in alpine area(altitude 800m a.s.l.) of National Livestock Research Institute from 2001 to 2002. The experiment was arranged in a split plot design with three replications. Main plots consisted of three seeding dates, 10 May, 20 May and 30 May. Sub plots consisted of harvesting dates, 15 September, 25 September and 5 October. Tassel height of com was decreased with seeding dates, 30 May, 10 May and 20 May in order, and harvesting date of 5 October was apt to be high. Ear height of com was decreased with seeding dates, 20 May, 30 May, and 10 May in order, and harvesting date of 15 September was the lowest of all treatments. Ear rate of com was decreased with late seeding dates, and it was the highest with harvesting date of 5 October. Dry matter yield was decreased with late seeding dates(P<0.05), and it was increased with late harvesting regardless of seeding dates(P<0.05). Crude protein content of com stover was increased with late seeding dates, and that of com ear was the highest with seeding date of 20 May. And crude protein contents of com stover and ear were the highest with harvesting date of 15 September. NDF contents of com stover and ear were the highest with seeding date of 10 May and 20 May, respectively, and NDF content of com stover was the highest with seeding date of 10 May and there was no difference among treatments in NDF content of ear. ADF content of com stover was 42.1 to 42.6% regardless of seeding dates, and that of com ear was the highest with seeding date of 30 May. ADF content of com stover and ear was increased with early harvesting date excepting for harvesting date of 20 May. These results indicate that 20 May and 25 September would be the optimum seeding date and harvesting date, respectively, for dry matter yield and nutritive value of silage com in alpine area.

• Development and Reproduction
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• 제4권2호
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• pp.187-193
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• 2000

Gonad and blood samples were taken from the cultured female Korean sea bass, Lateolabrax japonicus from October to February between 1997 and 1999. Gonadosomatic index began to increase in November and reached the highest value in December (12.8$\pm$1.5) and January (14.8$\pm$3.5), and then decreased sharply in February (2.6$\pm$1.5, p<0.05). The ovarian oocytes developed to tertiary yolk stage and reached fully-Brown stage in December and January, and then underwent atresia without maturation and ovulation in February. The plasma estradio3-17 $\beta$ level increased from November, and reached the highest value in December (1,152.3$\pm$107.2 pg/ml) and January (1,315.4$\pm$99.5 pg/ml), after then decreased in February (P<0.05). The concentration of plasma 17 $\alpha$ ,20 $\beta$-dihydroxy-4-pregnen-3-one was not significantly changed at low levels (86.6$\pm$6.5∼93.8$\pm$2.8 pg/ml) during the experimental period (P<0.05). All the fish with fully-grown oocytes in the ovary were matured and ovulated by HCG injection. The number of floating eggs were 325,000$\pm$26,000 at HCG 1,000 luhg and 195,000$\pm$35,000 at 2,000 lUikg. There was no difference in fertilization rate and hatching rate of the eggs (P<0.05). Considering these results, we could infer that the ovarian oocyte of the cultured Korean sea bass were not matured and ovulated because of the lack of gonadotropin surge. Moreover, HCG injection could induce oocyte maturation and ovulation in the cultured fish, and the effective dose was 1,000 IU/kg.

• The Korean Journal of Malacology
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• 제29권1호
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• pp.51-63
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• 2013

To assess the effect of environmental factors on the sustainability of cultured production shellfish, we investigated the habitat characteristics of tidal flat (Namhae-po in Taean). We measured the physiochemical parameters (temperature, salanity, pH, dissolved oxygen and nutrients) and the geochemical characteristics (chemical oxygen demand, ignition loss, C/N ratio and C/S ratio). Surface sediments were collected from several site of tidal flat to examine the geochemical characteristics of both the benthic environment and heavy metal pollution. The grain size for research area of tidal flat were similar at the ratio of silt and clay in comparison with the other site of it. The C/N ratio was more than 5.0, reflecting the range arising from the mix of marine organism and organic matter. The C/S ratio (about 2.8) showed that survey area had anoxic or sub-anoxic bottom conditions. The enrichment factor (Ef) and index of accumulation rate (Igeo) of the metals showed that those research areas can be classified as heavily polluted, heavily to moderately polluted, or more or less unpolluted, respectively. Adult surf clam (Mactra veneriformis) density was highest at St. 2 (middle part of the Namhae-po), on the other hand, surf clam spat density was highest at St. 3 (lower part of the Namhae-po). Heavy rain, terrigenous suspended clay with fresh water from neighboring agricultural land, and severe high air temperature during summer could be thought as detrimental causes of spat and adult mortality in Namhae-po tidal flat. We suggested that the growth of shellfish in the tidal flat was effected by the various environmental conditions, so an improvement in the cultured method was needed.

• Korean journal of applied entomology
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• 제43권2호
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• pp.103-109
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• 2004

Seasonal occurrence of Japanese gall-forming thrips, Ponticulothrips diospyrosi Haga et Okajima, and its damage pattern on leaves and fruits were studied at sweet persimmon orchards in Gimhae (orchard A, B) and Changwon, Gyeongnam. Korea in 2002 and 2003. Monitoring adults by yellow sticky traps and inspecting each developmental stage in damaged rolled-leaves revealed that the overwintered adults moved to sweet persimmon orchard from late April to late May, and oviposited inside the rolled leaves. Adults developed from the eggs showed peak occurrence of the first generation adults in early to mid June. Inspection of rolled leaves indicated that the peak occurrences of eggs, nymphs, and pupae of the first generation took place in early to mid May, late May to early June, and early June, respectively. Each developmental stage showed the second small peaks in the late season. Results suggest that most thrips live a single generation per year, but a small portion may develop to the second generation in persimmon orchards. The percent of damaged leaves was highest in Changwon orchard at 9.7％ in early June. Percentage of damaged fruits increased from 0.84％ in early June to 30.2％ in early September in Gimhae B orchard. It was found that the closer the persimmon trees were to the edge of the orchard, the worse damaged the leaves were. Appropriate timing for incorporation of control measures were discussed in relation to the seasonal occurrence of adults.

• KOREAN JOURNAL OF CROP SCIENCE
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• 제45권6호
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• pp.366-369
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• 2000

This study was conducted to determine the effect of seeding date on the days and the accumulated temperatures to development stages, leaf emergence, and yield in spring-planted barley. Two barley varieties, Sacheon #6 in spring type (growth habit I) and Saechalssalbori in winter type (growth habit IV), were seeded on four seeding date, Feb. 23, March 4, March 13, and March 24. Growth periods to emergence, heading and maturity were shorten when seeding dates were delayed, except for the heading date of Saechalssalbori (winter type barley)at the later seeding date. The rate of leaf emergence was 0.1915 in a day, and was slightly high when seeding was delayed. The accumulated temperatures were 111-142$^{\circ}C$ for emergence, 683-756$^{\circ}C$ for heading, and 1274-1326$^{\circ}C$ for maturity. In general, the accumulated temperature to heading was higher in Saechalssalbori than in Sacheon #6 because the winter growth habit of Saechalssalbori was not removed perfectly, One-thousand grain weight and yield were reduced by delayed seeding. In order to reduce the yield when barley were planted in spying, it is desirable to select the spring type varieties, and to plant them as early as possible.