• 대한간호학회지
• /
• 제47권3호
• /
• pp.357-366
• /
• 2017

Purpose: The aim of this study was to determine the influence of various factors on preterm labor symptoms (PLS) and preterm birth (PB). Methods: This prospective cohort study included 193 women in the second stage of pregnancy. Multiple characteristics including body mass index (BMI), smoking, and pregnancy complications were collected through a self-report questionnaire. Pregnancy stress and PLS were each measured with a related scale. Cervical length and birth outcome were evaluated from medical charts. Multiple regression was used to predict PLS and logistic regression was used to predict PB. Results: Multiple regression showed smoking experience, pregnancy complications and pregnancy specific stress were predictors of PLS and accounted for 19.2% of the total variation. Logistic regression showed predictors of PB to be twins (OR=13.68, CI=3.72~50.33, p<.001), shorter cervix (<25mm) (OR=5.63, CI=1.29~24.54, p<.05), BMI >25 ($kg/m^2$) (OR=3.50, CI=1.35~9.04, p<.01) and a previous PB (OR=4.15, CI=1.07~16.03, p<.05). Conclusion: The results of this study show that the multiple factors affect stage II pregnant women can result in PLS or PB. And preterm labor may predict PB. These findings highlight differences in predicting variables for pretrm labor and for PB. Future research is needed to develop a screening tool to predict the risk of preterm birth in pregnant women.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• 제34권3호
• /
• pp.285-292
• /
• 2008

Purpose: The present study was performed to evaluate the effect of surface treatment of the cervical area of implant on bone regeneration in fresh extraction socket following implant installation. Materials and methods: The four minipigs, 18 months old and 30 kg weighted, were used. Four premolars of the left side of both the mandible and maxilla were extracted. ${\phi}$3.3 mm and 11.5 mm long US II plus implants (Osstem Implant co., Korea) with resorbable blasting media (RBM) treated surface and US II implants (Osstem Implant co., Korea) with machined surface at the top and RBM surface at lower portion were installed in the socket. Stability of the implant was measured with $Osstell^{TM}$ (Model 6 Resonance Frequency Analyser: Integration Diagnostics Ltd., Sweden). After 2 months of healing, the procedures and measurement of implant stability were repeated in the right side by same method of left side. At four months after first experiment, the animals were sacrificed after measurement of stability of all implants, and biopsies were obtained. Results: Well healed soft tissue and no mobility of the implants were observed in both groups. Histologically satisfactory osseointegration of implants was observed with RBM surface, and no foreign body reaction as well as inflammatory infiltration around implant were found. Furthermore, substantial bone formation and high degree of osseointegration were exhibited at the marginal defects around the cervical area of US II plus implants. However, healing of US II implants was characterized by the incomplete bone substitution and the presence of the connective tissue zone between the implant and newly formed bone. The distance between the implant platform (P) and the most coronal level of bone-to-implant contact (B) after 2 months of healing was $2.66{\pm}0.11$ mm at US II implants group and $1.80{\pm}0.13$mm at US II plus implant group. The P-B distance after 4 months of healing was $2.29{\pm}0.13$mm at US II implants group and $1.25{\pm}0.10$mm at US II plus implants group. The difference between both groups regarding the length of P-B distance was statistically significant(p<0.05). Concerning the resonance frequency analysis (RFA) value, the stability of US II plus implants group showed relatively higher RFA value than US II implants group. Conclusion: The current results suggest that implants with rough surface at the cervical area have an advantage in process of bone regeneration on defect around implant placed in a fresh extraction socket.

• 한국의류산업학회지
• /
• 제17권2호
• /
• pp.258-264
• /
• 2015

This study provides abasis for the development of high functional cycle wear with clothing comfort and fitness for highschool boy cyclists by a comparison of the somatotype of highschool boys cyclists and general highschool boys. This study directly measured 44 anthropometric targeted cyclists across Korea. "The sixth national standard physical survey" data targeted 16 to 18-year-old male adolescents; subsequently, anthropometric measurement data was provided by 766 people for research. Highschool boy cyclists used t-test to compare the differences in body type. The results in this study are follows. Highschool boys cyclists(compared to regular highschool boys) indicated a great somatotype stature and weight. The differences in the cervical height and the acromion height results of, cyclist appeared smaller. Cyclists angle of shoulder was smaller. The upper body of highschool boys cyclist was greater than the difference between chest breadth and bust breadth with along biacromion length. The waist front length of the cyclist was a short cycle ride upon the attitude of the streamlined. Highschool boy cyclists indicated that the muscles of the arm portion was more developed compared to general highschool boys. The lower body had less abdominal fat with a significantly developed thigh and calf.

• 농업생명과학연구
• /
• 제53권4호
• /
• pp.77-92
• /
• 2019

본 연구는 한우의 성별에 따른 도체 특성 및 부분육 생산량을 조사하여 도체로부터 고기의 생산수율을 조사하고자 실시하였다. 한우 180두(암소 80두, 수소 29두 및 거세우 71두)를 도축한 다음 가공단계 별 중량변화, 도체규격, 대분할 부위 생산량 및 수율, 소분할 부위 생산량 및 수율, 부산물 생산량 및 수율을 조사하였다. 한우의 절식체중은 안소 634 kg, 수소 721 kg, 거세우 754 kg이었으며, 가공단계 별 중량변화는 냉도체중 381.01~467.60 kg, 대분할육 240.79~310.36 kg, 소분할육 208.27~276.47 kg, 뼈 57.23~76.28 kg, 지방 89.19~138.97 kg을 나타내었다. 한우 도체규격은 거세우에서 전장, 후 사분체장, 경장, 요장, 선장, 퇴장, 흉폭, 요폭, 퇴폭, 흉위 및 흉후가 가장 길었다(p<0.05). 도체중량은 생체중의 성별에 영향을 받았으며, 정육율, 지방율 및 뼈수율은 성별에 따라 영향을 받았다. 대분할 정육율은 수소가 등심, 목심, 앞다리, 우둔, 설도, 양지, 사태에서 유의적으로 높은 수율을 나타내었다(p<0.05). 도체부산물 수율에서 거세우는 가장 낮은 꼬리반골 및 갈비뼈 생산 수율을 나타내었고(p<0.05), 암소의 사골 및 잡뼈 생산수율이 가장 낮았다(p<0.05). 도체규격과 부분육 생산수율 조사는 도체특성에 따라 부분육 생산량을 예측할 수 있는 자료로 활용할 수 있을 것으로 사료된다.

• 대한치과교정학회지
• /
• 제27권5호
• /
• pp.743-760
• /
• 1997

두개저의 크기, 형태 및 두부자세가 지니는 두개안면구조의 공간적 수평, 수직적 위치간의 상관성을 파악해 보고자 남자 51명, 여자 49명으로 구성된 표본으로부터 촬영된 100장의 측모 두부방사선사진을 이용, 12개의 계측항목과 37개의 기준점을 설정하고 계측항목에 대한 계측치와 기준점의 수평, 수직 위치를 산출한 다음,이들 간의 상관관계를 통계적으로 분석하였으며 계측항목에서 얻은 계측치의 크기가 크거나 작은 군을 각각 10개 표본씩으로 분류하여 mean facial diagram을 작성, 비교함으로서 다음과 같은 결론을 얻었다. 1. 두개저의 형태변수인 n-s-ba 및 n-s-ar각은 경추의 기준점 cv4ip, cv2ip, cv4tg 그리고 cv2ap의 수평, 수직적 위치 모두에 높은 통계적 유의성의 상관관계를 보였다($0.1\%$ 유의수준). 2. 두개저의 형태변수인 n-s-ba및 n-s-ar각은 안면구조에 있는 대부분의 기준점의 수평적 위치와 상관관계를 보였으나($1\%$ 유의수준), 수직적 위치는 통계적 유의성이 없었다($5\%$ 유의수준). 3. 두개저의 크기변수인 n-s, n-ba, n-ba및 n-ar의 크기는 두개안면구조내 기준점의 위치와 다양한 양상의 상관관계를 보였으나, 대체로 치아, 치조와 관련된 중안면구조의 수평, 수직적 위치와 상관관계가 높았다. 4. 두개저와 경추의 기울기가 이루는 자세변수인 NSL/CVT, NSL/OPT각은 두개안면구조내 기준점의 수평적 위치에 높은 상관성을 지니고 있었으며 통계학적 유의성이 인정되었으나($1\%$유의수준), 수직적 위치와는 통계적 유의성이 없었다($5\%$ 유의수준). 5. 진수평선(true horizontal line)과 경추의 기울기가 이루는 자세변수인 OPT/HOR 및 CVT/HOR각은 두개안면구조내 기준점의 수평, 수직적 위치 모두와 통계적으로 유의성이 인정되는 상관성을 보이지 않았다($5\%$ 유의수준). 6. 연조직에 존재하는 기준점의 수평, 수직적 위치는 모든 변수와의 상관성에서 대부분 경조직의 관련 기준점에 준하는 양상을 보였다.

• Journal of Korean Neurosurgical Society
• /
• 제56권1호
• /
• pp.5-10
• /
• 2014

Objective : When the pedicle screw insertion technique is failed or not applicable, C7 intralaminar screw insertion method has been used as an alternative or salvage fixation method recently. However, profound understanding of anatomy is required for safe application of the bilaterally crossing laminar screw at C7 in clinic. In this cadaveric study, we evaluated the anatomic feasibility of the bilateral crossing intralaminar screw insertion and especially focused on determination of proper screw entry point. Methods : The C7 vertebrae from 18 adult specimens were studied. Morphometric measurements of the mid-laminar height, the minimum laminar thickness, the maximal screw length, and spino-laminar angle were performed and cross-sectioned vertically at the screw entry point (spino-laminar junction). The sectioned surface was equally divided into 3 parts and maximal thickness and surface area of the parts were measured. All measurements were obtained bilaterally. Results : The mean mid-laminar height was 13.7 mm, mean minimal laminar thickness was 6.6 mm, mean maximal screw length was 24.6 mm, and mean spinolaminar angle was $50.8{\pm}4.7^{\circ}$. Based on the measured laminar thickness, the feasibility of 3.5 mm diameter intralaminar screw application was 83.3% (30 sides laminae out of total 36) when assuming a tolerance of 1 mm on each side. Cross-sectional measurement results showed that the mean maximal thickness of upper, middle, and lower thirds was 5.0 mm, 7.5 mm, and 7.3 mm, respectively, and mean surface area for each part was $21.2mm^2$, $46.8mm^2$, and $34.7mm^2$, respectively. Fourteen (38.9%) sides of laminae would be feasible for 3.5 mm intralaminar screw insertion when upper thirds of C7 spino-laminar junction is the screw entry point. In case of middle and lower thirds of C7 spino-laminar junction, 32 (88.9%) and 28 (77.8%) sides of laminae were feasible for 3.5 mm screw insertion, respectively. Conclusion : The vertical cross-sectioned area of middle thirds at C7 spinolaminar junction was the largest area and 3.5 mm screw can be accommodated with 77.8 % of feasibility when lower thirds were the screw entry point. Thus, selection of middle and lower thirds for each side of screw entry point in spino-laminar junction would be the safest way to place bilateral crossing laminar screw within the entire lamina. This anatomic study result will help surgeons to place the screw safely and accurately.

• Asian Pacific Journal of Cancer Prevention
• /
• 제15권22호
• /
• pp.9731-9737
• /
• 2014

Large scale secular registry or surveillance systems have been accumulating vast data that allow mathematical modeling of cancer incidence and mortality rates. Most contemporary models in this regard use time series and APC (age-period-cohort) methods and focus primarily on predicting or analyzing cancer epidemiology with little attention being paid to implications for designing cancer registry, surveillance or evaluation initiatives. This research models age-specific cancer incidence rates using logistic growth equations and explores their performance under different scenarios of data completeness in the hope of deriving clues for reshaping relevant data collection. The study used China Cancer Registry Report 2012 as the data source. It employed 3-parameter logistic growth equations and modeled the age-specific incidence rates of all and the top 10 cancers presented in the registry report. The study performed 3 types of modeling, namely full age-span by fitting, multiple 5-year-segment fitting and single-segment fitting. Measurement of model performance adopted adjusted goodness of fit that combines sum of squred residuals and relative errors. Both model simulation and performance evalation utilized self-developed algorithms programed using C# languade and MS Visual Studio 2008. For models built upon full age-span data, predicted age-specific cancer incidence rates fitted very well with observed values for most (except cervical and breast) cancers with estimated goodness of fit (Rs) being over 0.96. When a given cancer is concerned, the R valuae of the logistic growth model derived using observed data from urban residents was greater than or at least equal to that of the same model built on data from rural people. For models based on multiple-5-year-segment data, the Rs remained fairly high (over 0.89) until 3-fourths of the data segments were excluded. For models using a fixed length single-segment of observed data, the older the age covered by the corresponding data segment, the higher the resulting Rs. Logistic growth models describe age-specific incidence rates perfectly for most cancers and may be used to inform data collection for purposes of monitoring and analyzing cancer epidemic. Helped by appropriate logistic growth equations, the work vomume of contemporary data collection, e.g., cancer registry and surveilance systems, may be reduced substantially.