One-step dilution and direct transfer would be a practical technique for the field application of frozen embryo. This study was to examine whether Jeju Black Cattle (JBC, Korean Cattle) can be successfully cloned from vitrified and one-tep diluted somatic cell nuclear transfer (SCNT) blastocyst after direct transfer. For vitrification, JBC-SCNT blastocysts were serially exposed in glycerol (G) and ethylene glycol (EG) mixtures [10%, (v/v) G for 5 min., 10% G plus 20% EG (v/v) for 5 min., and 25% G plus 25% EG (v/v) for 30 sec.] which is diluted in 10% FBS added D-PBS. And then SCNT blastocysts were loaded in 0.25 ml mini straw, placed in cold nitrogen vapor for 3 min. and then plunged into $LN_2$. One-step dilution in straw was done in $25^{\circ}C$ water for 1 min, by placing vertically in the state of plugged-end up and down for 0.5 min, respectively. When in vitro developmental capacity of vitrified SCNT blastocyst was examined at 48 h after one-step dilution, hatched rate (56.4%) was slightly lower than that of control group (62.5%). In field trial, when the vitrified-thawed SCNT blastocysts were transferred into uterus of synchronized 5 recipients, a cloned female JBC was delivered by natural birth on day 299 and healthy at present. In addition, when the short tandem repeat marker analysis of the cloned JBC was evaluated, microsatellite loci of 11 numbers was perfectly matched genotype with donor cell (BK94-14). This study suggested that our developed vitrification and one-step dilution technique can be applied effectively on field trial for cloned animal production, which is even no longer in existence.
For the purpose of implementing health and nutrition education for college women, we investigated changes in height, weight, and daily living schedule, as well as the relationship between energy intake and expenditure, and food and nutrients intake levels for the six years from 1977 to 1982. A special form of questionaires was prepared and distributed to well-trained subjects (total 213) in order to find out their general characteristics, daily living schedule and dietary intakes. The recovery of questionaires distributed to each subject was 90%. Then the quality of their living, energy balance, nutrient intake and food intake were evaluated and the F-test was used to test the statistical significances. It was found that : 1) The range of weights and heights of subjects were between 48-50 kg, 157-161cm respectively over the 6 year period. 2) In daily living schedule, that is, the average physiological activity time including sleeping ranged from 760 to 801 minutes. Free time decreased gradually, from 318 minutes per day in 1977 to 275 minutes in 1982. Average time for study and for house work was 196-280 minutes and 68 - 157 minutes respectively for 6 years, and study time was significantly varied in each year. 3) The energy intake of the subjects averaged 1762 Kcal, whereas the expended energy was 1892 Kcal. In the energy balance determined by the relationship between energy intake and expendituye, the ratio of subjects who maintained a negative energy balance gradually increased from 53% (1977) to 64%(1982). 4) The average nutrient intake was higher than the recommended dietary allowance except for calorie (1997 - 1982), calcium (1979) and iron (1979, 1980). The total calorie intake was composed of 59-63% carbohydrate, 19 - 24% fat and 15 - 18% protein Of the total protein intake the percentage of animal was 47 -51% for six years, showing acceptable nutritional status. 5) The average total food intake of the subjects increased from 1,080 g (1977) to 1,184g (1982), but this was not a significant difference. Cereal composed the highest proportion among the total food intakes, and rice intake was 58-78% of cereals. Cereal was followed in decreasing order by vegetables, dairy products, fruits, meat and fish products. The option available for the selection of cooking methods as well as the selection of food item was limited, so there were few changes over time.
In order to observe metabolic effects of an oral conceptive, Norinyle, on female Guinea pig, the changes of ascorbic acid amount and alkaline phosphatase activity in the liver and serum were determined, and histochemical changes of the uterus were observed by microscopic and electronmicroscopic methods by administration of Norinyle with or without ascorbic acid. The results obtained are summerized as follows: 1) The metabolic changes were clearly influenced by the administration of Norinyle alone, but the changes were diminshed by administration of Norinyle with ascorbic acid. 2) The adimnistration of Norinyle influenced to increases the requirment of ascorbic acid in the liver. 3) The uterus weight of the Norinyle administered group was much increased, while the weight was less increased in the group of administered Norinyle with ascorbic acid than the control. 4) The Norinyle administration was brought about an atrophy of endometrium, of uterus especially, functional layer, that the formation of glands were inadequately and the fromation of basal layer and stroma were diminished. 5) An acute infarction on the all layers of the uterus was developed at 9th and 25th days of Norinyle administration and 20th day of Norinyle with ascorbic acid administration. 6) A hypertrophy of stromal and endovascular cells were observed on the groups administered of Norinyle alone(group II ) or Norinyle with ascorbic acid(group IV). 7) It was observed that amount of collagen fiber in the basal and muscular layeres of uterus were diminished under a microscopical observation by the special stained specimen on the Norinyle administered group, but the amount and distribution of reticulin fiber were not changed significantly. 8) The fille structure of outer functional layer of the uterus were significantly changed by administration of Norinyle which were shown irregurarity of nuclear membrane, poor development ana significant expansion of enaoplasmic reticulum, decreases of the amount of ribosome due to slip off, increases of the number of dense bodies, obvious formation of vaccule, an4 decreases the amount of collagen in inner and outer layer of the stroma. 9) The amount of ascorbic acid in the serum did not much changed but the amount in the liver was much decreased by the administration of Norinyle, And the administration of Norinyle with ascorbic acid induced for a significant diminishing on the changes of uterus which might be able to developed by the administration of Norinyle alone.
Jeon, Boo Seong;Nam, Seung Won;Kim, Sunju;Park, Myung Gil
ALGAE
/
v.33
no.1
/
pp.1-19
/
2018
Members of the family Parviluciferaceae (Alveolata, Perkinsozoa) are the well-known dinoflagellate parasitoids along with Amoebophrya ceratii species complex and parasitic chytrid Dinomyces arenysensis and contain six species across three genera (i.e., Parvilucifera infectans, P. sinerae, P. rostrata, and P. corolla, Dinovorax pyriformis, and Snorkelia prorocentri) so far. Among Parvilucifera species, the two species, P. infectans and P. sinerae, are very similar or almost identical each other morphologically and genetically, thereby make it difficult to distinguish between the two. The only main difference between the two species known so far is the number of sporangium wall (i.e., 2 layers in P. infectans vs. 3 layers in P. sinerae). During sampling in Masan bay, Korea during the spring season of 2015, the dinoflagellate Akashiwo sanguinea cells infected by the parasite Parvilucifera were observed and this host-parasite system was established in culture. Using this culture, its morphological and ultrastructural features with special emphasis on the variation in the number of sporangium wall over developmental times, were investigated. In addition, the sequences of rDNA regions and ${\beta}-tubulin$ genes were determined. The result clearly demonstrated that the trophocyte at 36 h was covered with 4 layers, and then outer layer of the sporocyte gradually degraded over time, resulting in wall structure consisting of two layers, with even processes being detached from 7-day-old sporangium with smooth surface, indicating that the difference in the number of layers seems not to be an appropriate ultrastructural character for distinguishing P. infectans and P. sinerae. While pairwise comparison of the large subunit rDNA sequences showed 100% identity among P. infectans / P. sinerae species complex, genetic differences were found in the small subunit (SSU) rDNA sequences but the differences were relatively small (11-13 nucleotides) compared with those (190-272 nucleotides) found among the rest of Parvilucifera species (P. rostrata and P. corolla). Those small differences in SSU rDNA sequences of P. infectans / P. sinerae species complex may reflect the variations within inter- strains of the same species from different geographical areas. Taken together, all morphological, ultrastructural, and molecular data from the present study suggest that they are the same species.
Journal of the Korea Organic Resources Recycling Association
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v.10
no.4
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pp.112-117
/
2002
This study was conducted to induce the optimal composting conditions of pig manure mixed with sawdust and dried paper-mill sludge in the composting for production of high quality compost. Pig manure contains high water content and How C/N ratio because of comparatively high nitrogen content than sawdust and dried paper-mill sludge. Therefore the addition of dried paper-mill sludge and sawdust to the raw materials helps controlling the C/N and the water content of compost pile. The composting system used in the experiment was agitated static bed system. The physical properties of the mixed raw materials was not good at the working conditions in the early stage of composting. The temperature of compost heap reaches at $60^{\circ}C$within 5 day after starting composting in P-2 treatment mixed with pig manure and sawdust(56.6 : 43.4). Then the water content of P-2 was 58%. The pH in all treatments were slowly decreased as the composting was proceeded. Although the changes of T-C and T-N were not extended because of the short composting experiment period. Reduction rates of T-C in treatments were 5-12% without special difference. By considering the efficiency of composting in each of five treatments with pig manure the optimal water contents was about 57% level. Mixing a sawdust as a bulking agent was more positive than dried paper-mill sludge from a viewpoint of compost quality.
Journal of Korean Society for Atmospheric Environment
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v.29
no.3
/
pp.251-263
/
2013
The surface ozone concentrations changes were investigated in response to climate change over the Korean peninsula for summertime using the global-regional one way coupled Integrated Climate and Air quality Modeling System (ICAMS). The future simulations were conducted under the Intergovernmental Panel on Climate Change (IPCC) Special Report on Emissions Scenarios (SRES) A2 and B1 scenarios. The modeling system was applied for four 10-year simulations: 1996~2005 as a present-day case, 2016~2025, 2046~2055, and 2091~2100 as future cases. The results in this study showed that the mean surface ozone concentrations increased up to 0.5~3.3 ppb under the A2, but decreased by 0.1~10.9 ppb under the B1 for the future, respectively. However, its increases were lower than an increase of the average daily maximum 8-hour (DM8H) surface ozone concentrations which was projected to increase by 2.8~6.5 ppb under the A2. The DM8H surface ozone concentrations seem to be therefore far more affected by the climate and emissions changes than mean values. The probability of exceeding 60 ppb was projected to increase by 6~19% under the A2. In the case of B1, its changes were presented with an increase of 2.9% in the 2020s but no occurrence in the 2100s due to the effect of the reduced emissions. Future projection on surface ozone concentrations was generally shown to have almost the similar trend as the emissions of $NO_x$ and NMVOC.
Journal of the Korea Academia-Industrial cooperation Society
/
v.11
no.6
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pp.2161-2168
/
2010
The administration data of the national health insurance and health insurance bills were utilized in this study. The data of 485,953 patients who were at the age of 30 and up and used the out-patient departments of every medical institution located in some regions involving two southern and northern provinces once or more during a 184-day period from July to December, 2008. As a result of analyzing their Continuity of Ambulatory Care and factors affecting it, the following findings were given: The continuity of ambulatory care among the adult patients with hypertension in our country turned out to be on a high level(MMCI $0.96{\pm}0.13$, MFPC $0.96{\pm}0.12$). Given examining the outpatient medical-cure continuity level according to index, the averagely medical-cure continuity level was calculated to be high level with MMCI, $0.96{\pm}0.13$, and MFPC $0.96{\pm}0.12$. Thus, the tendency of visiting only one medical provider was high. The findings of the study illustrated that the average continuity of ambulatory care among the adult patients with hypertension in our country was on a high level, and it seemed that special care should be provided to patients with a low-level continuity of ambulatory care, such as women and elderly people aged 64 and over. The findings of the study are expected to serve as one of the barometers for the health care of patients with hypertension and for the performance of national hypertension management plans.
Proceedings of the Korean Society of Soil and Groundwater Environment Conference
/
2001.04a
/
pp.107-110
/
2001
제철소에서 매년 대량 발생되어 주로 매립처분되고 있는 제강분진의 재활용 방안으로서, 폐수처리분야에 널리 사용되고 있는 펜톤산화공정의 반응촉매원인 Fe 공급원으로서 제강분 진의 활용 가능성에 대한 연구를 수행하였다. 본 연구에서는 포항제철소에서 제철부산물로 발생되는 제강분진을 전처리 없이 산화촉매로 사용하여 김포 수도권 매립지의 침출수 처리 공정에서 펜톤산화조에 유입되는 원수를 대상으로 과산화수소에 의한 산화처리 실험을 수행하였다. 반응은 회분식으로 수행하였으며, 일반적으로 알려진 펜톤산화반응의 주요 반응조 건인 운전 pH, 과산화수소 주입량 및 분할주입, 제강분진의 주입량 등의 변화에 따른 각 조 건별 시간에 따른 반응결과를 알아보았다. 또한 기존의 Fe 공급원으로 사용되고 있는 FeSO$_4$와 처리성능 및 적용조건에 대한 비교 실험도 수행하였다. 침출수 수질변화는 TOC (Total Organic Carbon) analyzer를 사용하여 측정한 TOC값으로 나타냈으며, pH controller 와 정량펌프를 사용하여 HCl과 NaOH주입을 통해 반응기간동안 일정 pH를 유지하였다. 본 연구결과, 최적 pH 조건인 4에서 최대 75% TOC 제거율을 나타내었으며, 대부분의 반응은 30분 이내에 이루어졌다. 주어진 실험조건에서 FeSO$_4$와 비교하여 반응속도와 처리효율에서 향상된 결과를 나타내었으며 반응 후 응집침전실험에서도 보다 높은 처리효과를 얻을 수 있었다. 결론적으로, 과산화수소/제강분진 시스템을 이용한 화학적 산화처리방법은 경제성과 처리성능에서 기존의 펜톤산화공정의 대체방안으로서 향 후 적용가능성이 높을 것으로 기대된다.g, 200 mg/kg, 300 mg/kg의 순서로 함량이 점차 감소하는 결과를 얻을 수 있었다. 이상의 결과를 종합하여 볼 때 가자 메탄올추출물은 PQ 유도독성을 신장 및 폐조직에서 효과적으로 경감시키는 것으로 나타났다.ted retailers ("sellers") must accept end-of-life items returned to them by the consumers. At the local level, Taipei City implements a pay-as-you-throw program, whereby citizens pay waste collection and treatment fees through the purchase of special trash bags approved by the Taipei City Government. However. recyclables that are separated by citizens are collected free-of-charge by the City. Taichung City and Kaohsiung City, on the other hand, enforce mandatory sorting schemes, whereby citizens face penalties if they don't separate recyclables from the trash before pick-up. These programs have resulted in a significant reduction in municipal waste. Per capita waste collected per day has dropped from 1.143
Korea Medical Dispute Mediation and Arbitration Agency, "K-MEDI" in abbr. herein-after, is established on Apr. 9, 2012 according to the law cited in the title above for the purpose of settling medical disputes in a prompt, fair and efficient manner. Two special professional organizations are established in K-MEDI, one of them is Medical Dispute Mediation and Arbitration Committee(hereinafter referred to as the "Mediation Committee") and the other Medical Malpractice Appraisal Board(hereinaf-ter referred to as the "Appraisal Board"), the mission of the latter is to investigate the facts concerning the disputed medical conduct and to research as to and apprai-se whether the medical conduct was negligent and whether a causal relationship exists. Each panel organized in the Mediation Committee or the Appraisal Board shall be comprised of five mediators or appraisers, including necessarily a judge or a prose-cutor respectively and any disputed case regardless of the scale, the importance or the complicacy shall be handled by a panel. As the system is not thought efficient or economic, the number of the members comprising a panel or total members com-prising the Mediation Committee or the Appraisal Board shoud be adjusted, and the process shoud be versified, including the "Rapid Process," for instance. A petition for the mediation of a medical dispute shall be rejected if the respondent fails to notify K-MEDI of his/her intention to accede to the mediation within 14days from the day on which the petition for the mediation was served(Art. 27 Cl. 7). As the option of an arbitrary decision whether the mediation proceedings shall be commenced or not given to the respondent by the clause is thought unfair, making the process unstable, and moreover, diminishing the purpose of the system established by the law cited above for solving the medical disputes, the clause shoud be amended not to allow the respondent the option of such an arbitrary deci-sion. K-MEDI shall conduct the "Program for Compensation of Medical Accidents"(Art 46) according to which unavoidable injuries caused by the medical accidents in the cour-se of childbirth and the "Advances for Damages"(Art. 47) that are the compensating moneys paid to victims in medical malpractice cases who fail to receive money at all or partly from the operator or the professional of a public health or medical institution although he/she has a final and conclusive right to be paid by them. Some operators or professionals of such institutions claim that both the programs violate their fundamental rights assured by the constitution, and that it be a justifica-tion of refusal to accede to the mediation. As any of the programs needs not to be conducted by K-MEDI, it may be a proper solution to change the conductor of the programs to avoid the unproductive controversy.
This study explores the management of cable local channel and its related issue of renewed license. Programming of the local channel is the special obligation duty on the cable system operators(SO) under the article 70 (3) of the Broadcast Act. The law provides that SO should operate a local channel which produce, program and transmit the local information, a broadcast program guide and the official announcement items etc. under the conditions as prescribed by Presidential Decree. And the article 55 of the Enforcement Decree defines the scope of broadcast program which transmit through the local channels. And the Korea Communications Commission(KCC) grants a renewed licence 3-5 years based on the level of contribution to the development of local community under the article 31 of the Broadcasting Act and the Rules of Broadcast Evaluation. However, the management of local channel does not give the operators real benefit for the investment of a significant cost, and it could be a reason why the local channel programming has not been vitalizing despite of the legal coercion. To solve the several research questions, this study used in-depth interviews with the experts concerned and literature review for the government documents. The result shows that each SO local channel schedule almost 24 hour a day, but much of them is the repeat programming. In addition to that, the outcome reveals that the scale of the cost investment on the local channel is decreasing and the evaluation score of its management is not so positive figures. These result indicates that the policy of the cable local channel needs revised policy alternatives or paradigm on the basis of realistic goals.
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