• Title/Summary/Keyword: the year of chemistry

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Asian Quality Assurance Survey Program for Clinical Laboratory (아시아 임상검사실 정도관리 프로그램)

  • Lee, Gap-No
    • Journal of Korea Association of Health Promotion
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    • v.4 no.1
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    • pp.60-67
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    • 2006
  • Purpose : Asian Quality Assurance Survey program(AQuAS) is and activity of Asian Network for Clinical Laboratory Standardization and Harmonization(ANCLS) which had begun her first colloquium in 1999 in Jakarta, Indonesia by laboratory physicians led by Professors Noriyuki Tatsumi and Yoshinori Funahara with themes of standardization and harmonization of clinical laboratories in Asia. Methods : AQuAS had begun its first survey in July. 2001 and done November and March, three times per year in the fields of Chemistry, Hematology. Coagulation and Urinalysis. As of June 2006 the 15th survey have been completed. Korean Association of Health Promotion(KAHP) had participated in it since July, 2004 in the fields of chemistry, hematology and urinalysis.ゝ⨀

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The Effect of Methods of Estimating the Ability on The Accuracy and Items Parameters According to 3PL Model

  • Almaleki, Deyab A.;Alomrany, Ahoud Ghazi
    • International Journal of Computer Science & Network Security
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    • v.21 no.7
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    • pp.93-102
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    • 2021
  • This study aimed to test method on the accuracy of estimating the items parameters and ability, using the Three Parameter Logistic. To achieve the objectives of the study, an achievement test in chemistry was constructed for third-year secondary school students in the course of "natural sciences". A descriptive approach was employed to conduct the study. The test was applied to a sample of (507) students of the third year of secondary school in the "Natural Sciences Course". The study's results revealed that the (EAP) method showed a higher degree of accuracy in the estimation of the difficulty parameter and the abilities of persons higher than the MML method. There were no statistically significant differences in the accuracy of the parameter estimation of discrimination and guessing regarding the difference of the two methods: (MML) and (EAP).

A Study on Safety of Drycleaning Solvents (드라이클리닝 용제의 안전성에 관한 고찰)

  • 신정숙
    • Journal of the Korean Home Economics Association
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    • v.30 no.2
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    • pp.35-43
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    • 1992
  • This study is to investigate the problems of pollution caused by drycleaning solvents. From the problem of each solvents, safety count-step have to set up. It is following. 1) Solvent: Smong phenomenon of optical chemistry. It has to develop safety tumbler that is attached retrievable device. 2) Perchloroethylene: Pollution of underground water and cause of cancer. Considering the influence on environment and human bing, it has to set up more strong safty plan than now. 3) Chlorofluorocabon : Destory of ozon layer and green house effect on earth. It is being to stop the production until the early part of the year 2000. So it is developing a substitute for chlorofluorocarbon. 4) 1,1,1-trichloroethane : Pollution of underground water and destroy of ozon layzer. At the end of the year 2004, there will be end production of it.

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Processing factors of azoxystrobin in processed ginseng products (인삼 가공품 중 azoxystrobin의 가공계수)

  • Lee, Jae-Yun;Noh, Hyun-Ho;Lee, Kwang-Hun;Park, Hyo-Kyoung;Oh, Jae-Ho;Im, Moo-Hyeog;Kwon, Chan-Hyeok;Lee, Joong-Keun;Woo, Hee-Dong;Kwon, Ki-Sung;Kyung, Kee-Sung
    • The Korean Journal of Pesticide Science
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    • v.16 no.3
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    • pp.222-229
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    • 2012
  • This study was carried out to evaluate the residual characteristics of azoxystrobin in fresh ginseng and calculate its processing factors in processed products, such as dried ginseng, red ginseng and their extracts. Azoxystrobin was sprayed annually onto four-year-old ginseng according to its pre-harvest interval (PHI) for two years. Harvested ginsengs were processed according to the commercially well-qualified conventional methods provided by the Korea Ginseng Corporation. Limits of detection (LODs) of azoxystrobin in fresh ginseng and its processed products were 0.001 and 0.002 mg/kg, respectively. Also limits of quantitation (LOQs) in fresh ginseng and its processed products were 0.003 and 0.007 mg/kg, respectively. Recoveries of the analytical methods in fresh ginseng and its processed products ranged from 69.3 to 114.8%. Highest residue amounts in fresh ginseng and its processed products were 0.025 and 0.118 mg/kg, respectively. Processing factors of the processed products ranged from 1.85 to 3.17 in four-year-old ginseng and from 2.48 to 5.84 five-year-old ginseng.

Radiographic and Ultrasonographic Diagnosis of Unilateral Ovarian Cysts (개에서 편측성 난소낭종의 방사선학적 및 초음파학적 진단 2례)

  • 이기창;최민철
    • Journal of Veterinary Clinics
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    • v.19 no.3
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    • pp.367-370
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    • 2002
  • A female, 14-year-old mixed dog weighing 4 kg and a female,8-year-old schnauzer dog weighing 6 kg showing vaginal discharges and vomiting for a few weeks were examined for the preoperative check of anterior cruciate ligament rupture and the recheck after the surgery of nephrectomy. There were no distinct abnormal signs except for the increased CBC at schnauzer dog on blood chemistry analysis. Radiographic and ultrasonographic findings were a large abdominal mass and a cyst-like hypoechogenic or anechogenic cavitary lesion on the ovary region. These findings were consistent with an ovarian cyst. Thereafter highly suspected ovarian cysts by diagnostic imaging were supported by high estrogen concentration on hormonal assay and the results of Pathologic examination as the unilateral ovarian cysts with secondary pyometra.

Primary hepatic hemangiosarcoma (HSA) in a Schnauzer dog

  • Kang, Min-Hee;Heo, Ra-Young;Park, Hee-Myung
    • Korean Journal of Veterinary Research
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    • v.49 no.3
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    • pp.249-252
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    • 2009
  • A 6-year-old, neutered male, Schnauzer was presented with a one year history of weight loss and exercise intolerance. Physical examination revealed abdominal distention and ecchymosis on the abdominal skin. CBC and serum chemistry profiles revealed anemia and increased serum liver enzymes. Ultrasonography revealed a large liver mass which was characterized by multiple hypoechoic lesions. Postmortem examination revealed primary hepatic hemangiosarcoma. The tumor had extended to the mesentery and diaphragm, but distant metastasis was not found. This case report describes primary hepatic hemangiosarcoma which is very rare in a dog.

Changes in Pre-service Chemistry Teachers' Cognition of the Nature of Model in the Evaluation and Modification Process of Models Using Technology: Focusing on Boyle's Law (테크놀로지를 활용한 모델의 평가와 수정 과정에서 나타난 예비화학교사의 모델의 본성에 대한 인식 변화: 보일 법칙을 중심으로)

  • Na-Jin Jeong;Seoung-Hey Paik
    • Journal of the Korean Chemical Society
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    • v.68 no.2
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    • pp.107-116
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    • 2024
  • The purpose of this study is to analyze changes in pre-service chemistry teachers' cognition of the nature of model in the evaluation and modification process of model using technology. Changes in cognition of the nature of model were analyzed focusing on the 'Abstraction' and 'Simplification' of the 'Representational aspect', 'Interpretation', 'Reasoning', 'Explanation' and 'Quantification' of the 'Explanatory aspect' that were deemed insufficient for pre-chemistry teachers in previous study. For this purpose, 19 third-year pre-service chemistry teachers at a teacher's college in Chungcheongbuk-do were asked to evaluate the model related to Boyle's law developed using technology, revise the model based on the evaluation results, and make a final evaluation. As a result of the study, it was confirmed that pre-service chemistry teachers' cognition of 'Simplification' of the 'Representational aspect' and 'Interpretation', 'Explanation', and 'Quantification' of the 'Explanatory aspect' changed positively through the evaluation and modification process of the model. Therefore, it was found that the evaluation and modification process of the model plays a key role in changing the cognition of the nature of model. However, there was little change in cognition of 'Abstraction' of the 'Representational aspect' and 'Reasoning' of the 'Explanatory aspect'. The cognition of these factors can be seen as more difficult to change than the cognition of other factors. To solve this problem, more sophisticated educational design for pre-service chemistry teachers is needed.

Review of Biology Articles Published In "Vacation Life" Distributed in Middle School In Korea (우리나라 중학교 "방학생활"에서 생물분야에 대한 해설(제2보(第二報)) (1980년 겨울-1981년 여름))

  • Lee, Woong-Jik
    • Journal of The Korean Association For Science Education
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    • v.8 no.2
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    • pp.53-56
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    • 1988
  • The Korean Federation of Education Association has published "Vacation Life" to promote self-teaching of middle school students during the summer and winter vacation of middle school students every year. The book include whole subjecy offered in the middle school. However subject of science(Physics, chemistry, biology and earth science) is more emphasized. This article described brief summary of the contents of biology branch published in winter "Vacation Life", 1980 and summer "Vacation Life" 1981.

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A Preliminary Study on Setting Philosophy and Curriculum Development in Nursing Education (간호교육 철학정립 및 교육과정 개발을 위한 기초조사)

  • 정연강;김윤회;양광희;한경자;한상임
    • Journal of Korean Academy of Nursing
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    • v.18 no.2
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    • pp.162-188
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    • 1988
  • The purpose of this study is to guide the direction of the Korean nursing education to analysize ⑴ the philosophy and objectives ⑵ curriculum, and ⑶ educational environment. This analysis is based on the data from 50 nursing schools (14 4-year colleges and 35 3-year colleges) The survey was conducted from Dec. 1986 through Jan. 1987 by mail. 1) Educational philosophy and objectives 10 4-year colleges and 8 3-year college program have curricular philosoph. Most popular curricular philosophies are human beings, health, nursing, nursology, nursing education, nurses role in the present and in the future. 10 nursing schools mentioned that human being is the subject to interact with : environment physically, mentally and socially. 2 schools mentioned that health is the state of functioning well physically, mentally and socially. 13 schools mentioned that the nursing is the dynamic act to maintain and to promote the highest possible level of health. 4 schools mentioned that the nursology is an applied science. 4 schools mentioned that nursing education is the process to induce the behavioural changes based on the individual ability. There is different opinion about the nurses' role between 4-year college and 3-year college. In the responses from 4-year colleges they focus on the leadership in effective changes, self-regulating and self-determining responsibilities, applying the new technology, continuing education, and participation in research to further nursing knowledge. In the responses from 3-year colleges, they focus on the education in college, primary health care nursing, direct care provider and public health education. Among 50 respondents 40 schools have educational goals which can be divided into two categories. One is to establish the moral and the other is to develop the professionalism. 2) Curriculm The analsis of curriculum is only based on the data from the 4-year colleges because the most of 3-year colleges follow the curriculum guideline set by the Ministry of Education. a) Comparison of the credits in cultural subject and in nursing major. The average required credit for graduation is 154.6 and the median credit is the range of 140-149. The average credit of cultural subjects is 43.4. In detail, the average number of credit of required course and elective courses are 24.1 and 19.3 respectively. The average credit for major subject is 111.2. In detail, the average credit for required courses and electives course are 100.9 and 10.4 respectively. In 5 colleges, students are offered even on elective course b) Comparison of the credit by class. The average earned credits are as follows : 41.1 in freshman, 400 in sophormore 38.3 in junior and 32.4 in senior. Cultural subjects are studied in early phases. c) Comparison of the compulsory and elective cultural subject by institute. The range of credit is 7-43 in compulsory cultural subjects and there are lot of differences among institutions. While all respondents require liberal arts as compulsary subjects, few respondents lists social science, natural science and behavioral science as required subjects. Social science-related subjects are frequently chosen as cultural subjects d) Distribution of creditsin cultural subjects by institute. The liberal art subjects are taught in 20 institute. English and physical education courses are taught in all instituions. The social science subjects are taught in 15 colleges and the basic Psycology and the Basic sociology are the most popular subjects. The natural science subjects are taught in 7 colleges and Biology and Chemistry are the most popular subjects among them. e) Distribution of credits in major basic courses by institute. Most of the institutes select Anatomy, Microbiology, Physiology, biochemistry and Pathology as basic major courses. f) Comparison of the required and elective courses for nursing major by institutions. Subjects and credit ranges in major are varing by institute. More than half of the respondents select the following subjects as required major subjects. (1) Adults Health Nursing and Practice (19.5 credits) (2) Mother and Child Care and Practice (8.9 credits) (3) Community Health Care and Practice (8.5 credits) (4) Psychiatric Nursing Care and Practice (8.1 credits) (5) Nursing Management and Practice (3.9 credits) (6) Fundamental of Nursing, Nursing Research and Health Assessment and Practice. Three institutions select Introduction to nursing, Rehabilitation Nursing, School Nursing, Public Health Nursing, Nursing English, Communication, Human Development as electives in nursing major. 3) Educational environment a) Nursing institution There are forty-three 3-year colleges and seventeen 4-year colleges and 81.4% of which are private b) Number of students and faculty 19.2% of the students are in 4-year colleges and 80.8% of the students are in 3-year colleges. In 4-year colleges, the number of nursing faculty members is in the other of assistant professor, instructor and professor. In 3-year colleges, the orderiis lecturer, associate professor, full time instructor and assistant professor. In 4-year colleges, 18.8 students are allocated per nursing faculty and in 3-year colleges, 33.1 students are allocated per nursing faculty. c) Clinical practices 66.7% of the 4-year colleges practice over 1201 hours in clinic and 28.5% of 3-year colleges practice over 1201 hours in clinic. In 4-year colleges, 11.5 students are allocated per nursing faculty and in 3-year colleges,17 students are allocated per nursing faculty The survey shows no difference in the procedure between 4-year colleges and 3-year colleges but 3-year colleges choose the more variety practicing site such as special hospital and community health clinic. d) Audiovisual facilities The survey shows a lot of difference in audiovisual facilities among institution and 3-year colleges are less equipped than 4-year colleges.

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Measurement of Nitrous Oxide Emissions on the Cultivation of Soybean by No-Tillage and Conventional-Tillage in Upland Soil

  • Yoo, Gil-Ho;Kim, Deok-Hyun;Yoo, Jin;Yang, Jong-Ho;Kim, Sang-Woo;Park, Ki-Do;Kim, Min-Tae;Woo, Sun-Hee;Chung, Keun-Yook
    • Korean Journal of Soil Science and Fertilizer
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    • v.48 no.6
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    • pp.610-617
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    • 2015
  • The impact of 1 pound of nitrous oxide ($N_2O$) on warming the atmosphere is almost 310 times that of 1 pound of carbon dioxide. Agricultural soil management is the largest source of $N_2O$ emissions, accounting for about 73% of total $N_2O$ emissions. This study was conducted to evaluate the nitrous oxide emission in the cultivation of soybean during the first year of No-tillage (NT) and Conventional-tillage (CT) practices, under the various conditions such as different kinds of fertilizers, soil temperature, and moisture level. In the experiment, we set CT and NT treatments into 4 different groups - control treatments (no fertilization), green manure treatments, chemical fertilizer treatments and organic manure treatments. In the case of chemical fertilizer treatments, $N_2O$ emission of NT treatment was 7.78 to 22.59% lower than CT treatment. In organic manure treatment, $N_2O$ emission of NT treatment was 6.62% higher than CT treatment in August. But In July and September, $N_2O$ emission of NT treatment was 9.50% 28.38% lower than CT treatment, respectively. Soil temperature was correlated with $N_2O$ emission positively. In the future, continued long-term research on influence of various environmental factors on the generation of $N_2O$ and the economic value of no-till farming is required.