1998년과 2007년 사이 12∼13세 남녀 청소년의 체격, 골격성숙도, 체력 비교

송종국(Jong Kook Song),채서연(Seo Yeon Chae),채주희(Joo Hee Chae),김현배(Hyun Bae Kim),강효정(Hyo Jung Kang) 한국사회체육학회 2008 한국사회체육학회지 Vol.0 No.34

The purpose of the present investigation was to compare physique, skeletal maturation and physical fitness in Korean adolescents measured between 1998 and 2007. Subjects participated in the study were a total of 473 Korean adolescents aged 12 to 13 years. In 1998, 349 adolescents were selected from a middle school, located in Sungnam city and 124 middle school students aged 12-13, located in Yongin city were participated in 2007. All measurements were conducted by one of the reseachers (Jong-Kook Song) with two different group of investigators between 1998 and 2007. Anthropometric characteristics were body mass, body height, sitting height, circumferences taken at sites of upper arm, flexed upper arm, chest, waist, hip, thigh, and calf, bone breadth taken at the sites of humerus, and femur, skinfold thicknesses taken at the sites of triceps, subscapular, suprailiac, thigh and medial calf. Skeletal maturity was assessed by TW3 (Tanner et al., 2001). Maturity scores for Radius-Ulna-Short bones (RUS) and bone age were calculated. Physical fitness parameters included flamingo balance, sit and reach, grip strength, sit-ups, standing long jump, bent arm hang, 50m shuttle run and multi-stage shuttle run. All data were analyzed by SAS Enterprise 3.0. Means and standard deviations were calculated by descriptive statistics. Independent t-test was applied to compare dependent variables between measurements. The level of significance was set at p<0.05. Results of the study showed that male adolescents aged 12-13years in 2007 had significantly higher (p<0.0001) femur diameter than adolescents in 1998. Male adolescents in 2007 had higher (p<0.05) chest, waist and calf circumferences than those of adolescents in 1998. Although no difference were found for RUS and bone age in males adolescents between 1998 and 2007 female adolescents in 2007 were significantly delayed for their skeletal maturity level compared to female adolescents in 1998. For physical fitness parameters male adolescents aged 12 years in 2007 performed better for flamingo balance (p<0.01), and 50m shuttle run (p<0.05) than those of adolescents in 1998. However, stand long jump and bent arm hang were significantly decreased in male adolescents in 2007. Female adolescents aged 12-13 years in 2007 had significantly higher flamingo balance, but female adolescents aged 12 years in 2007 performed significantly less for standing long jump (p<0.0001), bent arm hang (p<0.001) and speed (p<0.05) than those of female adolescents in 1998. In conclusions this study suggest that chest circumference for both male and female adolescents in 2007 was significantly higher than those in 1998. Skeletal maturity for female adolescents in 2007 were significantly delayed compared to female adolescents in 1998. Further study is needed to evaluate consistent various.

韓牛 末梢血液 淋巴球의 在來山羊 赤血球 Rosette形成

宋憙鍾,金鍾冕,姜明大,蔡孝錫 全北大學校 附設 畜産開發硏究所 1988 畜産開發硏究報告 Vol.2 No.-

In order to enumerate the T lymphocytes in bovine peripheral blood lymphocytes(PBL) by E rosette assay, KGRBC were treated with various concentration of 2-aminoethylisothiouronium bromide hydrobromide(AET) and dextran(Dex), singte or combination. The PBL from 10 clinically normal Korean native cattle were formed as low percentage of spontaneous E rosette(6.7±2.4%) in control group, whereas KGRBC treated with 0.1M AET for 20 minutes and 8%Dex were formed as 37.3±2.7% and 45.1±2.1%, respectively. And the synergistic effects were noted no less than 66.5±5.6% when the KGRBC treated with 0.1M AET and 8% Dex subsequently. These results suggest that the KGRBC would be a useful agent for the enumeration of T tymphocytes by E rosette assay in bovine PBI.

친수성으로 표면개질한 폴리설폰막의 투과플럭스

송근호,김강희,조성헌,이광래,임종호,배성수 한국화학공학회 2004 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.42 No.1

실관막형 폴리설폰 막의 표면을 2-hydroxyethylmethacrylate(HEMA)로 코팅하였으며, 코팅인자들인 azobisisobutyronitrile(AIBN)/HEMA 성분비, 용매의 종류(물, 메탄올), UV 조사시간 등이 투과플럭스에 미치는 영향을 조사하였다. AIBN/HEMA/ 메탄온ㄹ 용액으로 코팅한 막이 AIBN/HEMA 성분비가 높고, UV 조사시간이 길수록 투과플럭스가 높았다. AIBN/HEMA 성분비가 낮으면 동일한 투과플럭스를 얻기 위하여 UV조사시간을 더 길게 하여야 하며, 특정한 AIBN/HEMA 성분비와 UV 조사시간에서 코팅한 막의 투과플럭스는 원래의 막(코팅하지 않은 막)보다 높게 나타났다. 또한, 오일에멀젼에 의한 fouling은 코팅한 막과 원래의 막에 모두 나타났지만, 코팅한 막의 fouling이 원래의 막 보다 현저히 낮았다. 즉, fouling 발생 후 코팅한 막의 수투과 플럭스(0.2683g/㎠ㆍmin)는 코팅하지 않은 막(0..448g/㎠ㆍmin)보다 약 6배 이상으로 높게 유지되었다. A hollow-fiber type polysulfone UF membrane was surface-coated with 2-hydroxyethylmethacrylate(HEMA). The effect of various coating paramters on permeation flux was investigated, such as concentration ratio of Azobisisobutyronitrile(AIBN)/HEMA, solvent (water or methanol), and UV irradiation time. The membrane coated with a solution of AIBN/HEMA/methanol showed about 2.65 times higher water flux than that coated with a solution of AIBN/HEMA/water. The membrane coated with a solution of higher AIBN/HEMA ratio and a longer UV irradiation time exhibited a higher permeation flux. The membrane coated with a solution of lower AIBN/HEMA ratio needed a longer UV irradiation time for coating to get a same level of permeation flux. In order to have a greater permeation flux than uncoated membrane, the membrane should be coated with a solution of a certain AIBN/HEMA ratio and UV irradiation time. The fouling by oil emulsion occurred to both of the coated and the uncoated membrane. However, the fouling of coated membrane was much less than uncoated one; the water flux(0.2683g/㎠·min)through the coated membrane was about 6 times higher than that(0.0558g/㎠·min) through the uncoated membrane.

식물생장조절제 Seaweed extracts(GA14)의 수도 품종간 생육 및 수량에 미치는 효과

송재영,김용일,박보영,정재영,최현구,정종태,이희봉 충남대학교 농업과학연구소 2004 농업과학연구 Vol.31 No.1

This study was carried out to identify the effects of seaweed extracts(GA14) on growth of two rice cultivars, Junambyo and Donganbyo. Seedling qualities of two cultivars were better in all items including heading dates at early stage treated at seedling plus 2-3 leaf stages than at single treatment of seedling. Ripening ratio of Junambyo in paddy field was increased 0.3% by seaweed extracts(GA14) treatment, but that of Donganbyo decreased 0.5%. 1,000 grain weight of Junambyo and Donanbyo by seaweed extracts(GA14) treatment was two to four grams higher and the yield of two cultivars was also higher by three to four percent. Appearance characters of two rice cultivars was high in head, while damaged, chalky and crack rate were low at seaweed extracts(GA14) treatment. Protein, moisture and amylose characteristics related to table quality of Junambyo were not different by seaweed extracts treatment, but table values was high in only treatment. Donganbyo was also similar to Junambyo, but table quality was slightly high at non-treatment.

PCR-Restricition Fragment Length Polymorphism 방법에 의한 Borrelia burgdorferi Sensu Lato의 분류

송혜원,김홍,박상욱,엄용빈,김종배,박성언,김근희 THE KOREAN SOCIETY FOR BIOMEDICAL LABORATORY SCINE 1999 Journal of biomedical laboratory sciences Vol.5 No.2

라임병의 원인균인 Borrelia burgdorferi에 대하여 각 균종의 표준균주와 진드기에서 추출한 DNA를 template로 PCR을 실시한 후 그 증폭산물을 Alu I으로 처리한 restriction fragment length polymorphism (RFLP) 방법으로 각 균종의 연관성을 조사하고자 하였다. 표준균주로 RFLP를 실시한 결과 B. burgdorferi sensu stricto와 B. garinii의 RFLP 형태 (50 bp, 70 bp, 150 bp)가 유사하였으며 B.afzelii에서는 다른 RFLP형태 (50bp, 110bp, 150 bp)를 관찰하였다. 그 중 B. afzelii KK-1과 B. garinii HP1은 새로운 RFLP 형태를 보여 B. afzelii와 B. garinii는 각각 2 types의 subgroup으로 분류할 수 있었다. 진드기 DNA에서 는 B. afzelii를 포함한 각 균종에 대하여 모두 유사한 RFLP 형태를 보였는데, 진드기 DNA에서 확인된 B. afzelii는 KK-1과 같은 군에 속하는 것으로 사료되었다. For the classification of B. burgdorferi sensu lato strains, PCR-restriction fragment length polymorphism (RFLP) analysis was performed. PCR was carried out with B. burgdorferi sensu lato specific primer set (BB uni set), and amplicons of 470-bp DNA were digested with Alu I. The Alu I restriction polymorphism of the amplicons provided a useful tool for identifying B. burgdorferi sensu lato strains. Both amplicons from B. burgdorferi sensu stricto and B. garinii except HP1 strain showed identical RFLP pattern (50 bp, 70 bp, and 150 bp), but amplicons from B. afzelii and B. garinii showed two types of subgroups, respectively. The result of PCR-RFLP using extracted DNAs from ticks was similar to those patterns of B. burgdorferi species including B. afzelii.

Osteotome Sinus Floor Elevation Procedure를 이용한 임프란트 매식

송종운,조용기,박홍주,김영운,오희균,유선열 대한악안면성형재건외과학회 2002 Maxillofacial Plastic Reconstructive Surgery Vol.24 No.2

Maxillary sinus has an anatomic limitation to bone support available for dental implant. When there is less than 10㎜ of bone remaining between the upper alveolar ridge crest and the maxillary sinus floor, bone augmentation should be considered. In 1994, Summers reported two sinus floor elevation techniques of limmediate implant insertion, using osteotomes, for patients who have at least 5㎜ of bone remaining between the alveolar ridge crest and the maxillary sinus floor. One technique is osteotome sinus floor elevation (OSFE) procedure in which uses osteotomes to elevate the sinus floor. The other is bone-added OSFE (BAOSFE) procedure in which bone graft is added into osteotomy site. Both procedures conserve all of the remaining bone and selectively displace it upward, thereby raising sinus floor. This study was aimed to evaluate the long-term success rate of implants which had been placed by osteotome sinus floor elevation procedure. Between February 1996 and June 1998, 10 implants were placed using OSFE or BAOSFE procedures in 6 patients who had at least 6㎜ of bone remaining between the alveolar ridge crest and the sinus floor. OSFE procedures were performed in patiens, 2∼4㎜ sinus floor elevation was needed, whereas BAOSFE procedures were done in patines, more than 4㎜ sinus floor elevation was needed. During the mean follow-up period of 4 years 4 months (3 years 6 months ∼ 5 years 9 months), no implant was failed and all patients showed good functional results. OSFE and BAOSFE procedures seemed technically easier and less invasive compared to conventional sinus lift procedure. And both procedure have good success rate.

신냉매용 자동차 에어콘 시스템에서 팽창밸브의 특성 해석

송유호,박종일,홍희기,김경훈 경희대학교 산학협력기술연구원 1996 산학협력기술연구논문집 Vol.2 No.-

This study was performed to design the optimal Block Type Expansion Valve through analyzing the characteristics of the Block Type Expansion Valve in automotive air conditioning system using HFC-134a. To make easy flow control and pressure drop, the main function of Block Type Expansion Valve, a preliminary experiment on 3 kinds of orifice(Rectangular Type, Diffuser Type, Cone Type) was carried out and the flow characteristics in Expansion Valve was analyzed. Based upon the results of the experiment, 2 types of Block Type Expansion Valve were installed in automotive air conditioning system using HFC-134a and the characteristics of the 2 types of Block Type Expansion Valve were analyzed and compared under variation of compressor RPM.

대퇴골두 골괴사를 동반한 슬관절 골괴사 : 증례 보고

송준민,이병일,나수균,신영수,최창욱,박종석,권희 순천향의학연구소 1996 Journal of Soonchunhyang Medical Science Vol.2 No.1

본 순천향대학교 의과대학 정형외과학 교실에서는 2명의 환자에서 발견된 대퇴골두 골괴사와 함께 발생한 양측 슬관절 골괴사를 경험하였기에 보고하는 바이다. 대퇴골두 골괴사가 있는 환자에서 슬관절 동통을 호소하는 경우 연관통 등으로 여겨 간과하기 쉬우며, 대개 고관절의 통증으로 체중부하 보행이 어려운 경우가 많아 통증이 약하게 나타나기도 하기 때문에 관심을 가지고 슬관절 골괴사를 동반하는지 여부를 판단하여야 할 것이다. Osteonecrosis of the knee associated with osteonecrosis of the femoral head was very rare and reported cases were quite rare. We have experienced two cases of osteonecrosis of both knees associated with osteonecrosis of the femoral head. One is a 44-year-old man who had avascular necrosis of the righ femoral head and osteonecrosis of both knees, femoral condyle and metaphysis of proximal tibia. Another case is a 39-year-old man who had osteonecrosis of both femoral head and osteonecrosis of the both knees, medial condyles of both tibias. They were treated with total hip replacement arthroplasty for avascular necrosis of the femoral head and conservatively for osteonecrosis of the knee. If a person complains of pain in hip and knee simultaneously, we should pay attention and rule out osteonecrosis of the knee.

Paraquat 독성에 미치는 Dicumarol과 Allopurinol의 병합 투여 효과

송명화,정미숙,오순식,박재윤,차종희 조선대학교 1995 The Medical Journal of Chosun University Vol.20 No.1

Despite intensive investigation into paraquat toxicity, neither the final cytotoxic mechanism nor a clinically useful antidote has been discovered. The mechanism of paraquat cytotoxicity is also debatable, but it is generally accepted that a redox reaction occurs between reduced paraquat and molecular oxygen. The intracellular reduction of paraquat occurs by various enzymes, such as DT-diaphorase, xanthine oxidase and glutathione reductase. In present study, we investigated that the effects of allopurinol, a xanthine oxidase inhibitor, and dicumarol, a DT-diaphorase inhibitor, in paraquat-intoxicated rats. The survivals of paraquat-intoxicated rats were increased by allopurinol treatment compared to paraquat-treated control rats , but not effected by dicumarol treatment. The activity of xanthine oxidase in the liver of allopurinol-treated rats was decreased and DT-diaphorase activity in liver of dicumarol treated rats was also decreased compared to normal control rats. The contents of glutathione in liver of paraquat treated rats was decreased but in paraquat+allopurinol treated rats, the decrements of glutathione contents was reduced but in paraquat+dicumarol treated rats, liver glutathione level was not changed compared to paraquat-treated rats. These results suggest that paraquat toxicity maybe reduced by administration of allopurinol but dicumarol did not have such effects .

아동기 어린이들의 신체활동 프로그램 참여가 체격 및 운동수행능력에 미치는 영향

송종국,이은희 한국스포츠리서치 2004 한국 스포츠 리서치 Vol.15 No.6

The aim of the study was to evaluate the effect of a physical activity program on body she and physical performance in preschool children aged 5 years, Subjects consisted of 60 children including 30 children participated in physical activity program and 30 children attending private kindergarten as a control group. Anthropometric characteristics were body height, body weight and chest circumference. Physical performance included sit and reach long jump, shuttle run 20m one foot balance, and leg lift. All statistical analysis were carried out by the SAS computer programs, The results showed that significant increases (p<.001) can be obtained for body height, body weight and chest circumference for both groups between pre and post exercise. However, there were no differences for those variables between exercise group and control group in both pre and post exercise. For physical performance parameters exercise group showed significant increase (p<.001) for sit & reach, long jump, one foot balance and 20m shuttle run between pre and post exercise. Also, significant increase were found for flexibility (p<.01), power (p<.05) and agility (p<.05) in control group, For all variables exercise group have higher mean values than control group in post exercise. This study suggest that participation in physical activity program during childhood can influence positively physical performance.