• Hip & pelvis
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• 제34권3호
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• pp.161-171
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• 2022

Purpose: The number of obese patients seeking total hip arthroplasty (THA) continues to expand despite body mass index (BMI) cutoffs. We sought to determine the outcomes of THA in the morbidly obese patient, and hypothesized they would have comparable outcomes to two cohorts of obese, and normal weight patients. Materials and Methods: THA performed on morbidly obese patients (BMI >40 kg/m²) at a single academic center from 2010 until 2020 were retrospectively reviewed. Eighty morbidly obese patients were identified, and matched in a 1:3:3 ratio to control cohorts with BMI 30-40 kg/m² and BMI <30 kg/m². Acute postoperative outcomes and BMI change after surgery were evaluated for clinical significance with univariate and regression analyses. Cox proportional hazard ratio was calculated to evaluate prosthetic joint infection (PJI) and revision surgery through follow-up. Mean follow-up was 3.9 years. Results: In the acute postoperative period, morbidly obese patients trended towards increased hospital length of stay, facility discharge and 90-day hospital returns. At final follow-up, a higher percentage of morbidly obese patients had clinically significant (>5%) BMI loss; however, this was not significant. Cox hazard ratio with BMI <30 kg/m² as a reference demonstrated no significant difference in survival to PJI and all-cause revision in the morbidly obese cohort. Conclusion: Morbidly obese patients (BMI >40 kg/m²) require increased resource expenditure in the acute postoperative period. However, they are not inferior to the control cohorts (BMI <30 kg/m², BMI 30-40 kg/m²) in terms of PJI or all-cause revisions at mid-term follow-up.

• 한방비만학회지
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• 제14권1호
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• pp.36-45
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• 2014

Objectives: The purpose of this studay was to compare the eating-related index and the patterns of pre- and post-prandial gut hormone level in normal-overweight and obese subjects of Taeemin population. Methods: We enrolled healthy male participants who were diagnosed with Taeeumin by Sasang Constitutional diagnosis and who were normal-overweight ($18.5kg/m^2{\leq}$body mass index [BMI)< $25kg/m^2$) or obese ($25.0kg/m^2{\leq}$BMI< $30kg/m^2$). Eating behavior and gastrointestinal problems were assessed by using standardized scale. Subjective appetite ratings using visual analogue scales and the profiling of serum levels of ghrelin and peptide YY (PYY) were assessed before and after a standard meal (6 time points: 30 minutes pre-prandial, immediately before meal, 15, 30, 60, and 120 minutes post-prandial). Results: Tewnty two healthy Taeeumin people classified as normal-overweight group or obese group are the final subjects. External eating score of Dutch eating behavior questionaire scores is higher in normal-overweight group than in obese group. The variations of subjective appetite ratings in obese group are smaller than in normal-overweight group. The pattern of ghrelin in normal-overweight group shows a high peak at 30 minutes post-prandial point, which is contrary to existing studies. The pattern of PYY in obese group decreases from 15 minutes post-prandial point and shows lower peak level, whereas in normal-overweight group shows increasing tendency from pre-prandial point until 30 minutes post-prandial point. Conclusions: There are differences in the eating-related index and the gut hormone patterns related to obesity.

• 대한한방소아과학회지
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• 제32권1호
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• pp.11-18
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• 2018

Objectives The purpose of this study is to analyze the clinical data of atopic dermatitis patients and to report the therapeutic effect of Jageum-Jung. Methods We conducted a retrospective study on the effects of treatment on atopic dermatitis patients who took Jageum-Jung from August 1, 2017 to December 20, 2017. The patients visited three times during the treatment period. The SCORAD Index score was measured and analyzed. Results Atopic dermatitis patients were 2 adults and 5 children. Both 2 adults were male (100%). Among the children, 1 child was a male (20%) and 4 children were females (80%). For adults, average age was 29.5 years, average weight was 72.75 kg, average height was 1.76 m and average BMI was $23.49kg/m^2$. For children, average age was 6.2 years, average weight was 23.92 kg, average height was 1.2 m and average BMI was $16.08kg/m^2$. The atopic dermatitis patients' average SCORAD Index score was 18.04 at first visit, 11.46 at second visit, and 7.64 at third visit. The scores lowered significantly after every visit. Conclusions The SCORAD Index in atopic dermatitis patients who took Jageum-Jung significantly decreased and it is expected that Jageum-Jung will be clinically effective in the treatment of atopic dermatitis.

• 한국수산과학회지
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• 제44권6호
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• pp.701-708
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• 2011

The aim of the present study was to analyze the reductive cycle of the red marbled rockfish Sebastiscus tertius. The analysis was based on annual changes in the gonadosomatic index (GSI), the hepatosomatic index (HSI), histology of the gonadal structure, and plasma sex steroid hormone levels of adult fish from April 1997 to April 1998. GSI of females began to increase in February and peaked ($10.8{\pm}2.72$) in May. HIS levels ($3.41{\pm}0.49$) peaked in February and elevated plasma steroid hormones ($1.47{\pm}0.75$ ng/mL for estradiol-$17{\beta}$ ($E_2$) and $230.7{\pm}27.6$ pg/mL for testosterone (T)) were observed in April. However, in male fish, GSI levels started to increase in August and remained high until November ($0.21{\pm}0.05$). T levels were was also elevated in August and peaked in October ($188.1{\pm}43.5$ pg/mL) and November ($186.8{\pm}28.0$ pg/mL), but started to decline 1 month than the GSI. These results suggest that female ovoviviparious periods span from April to June and amle mating periods occur from November to February.

• 환경영향평가
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• 제20권3호
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• pp.367-379
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• 2011

This study was conducted to develop an ecological park planning model to enhance the functions of habitats and ecological corridors in Green Belt Areas, because changing policies have resulted in the degredation of the Green Belts due to progressive fragmentation of ecosystems. The principal outcome of the study is to plan an ecological park model through the restoration of habitats. In order to evaluate the capacity of the model to enhance the ecological functions of habitats and ecological corridors in Green Belt Areas, a simulation of habitats was carried out in the Sungnam-Yusoo region. The model was developed via following steps: 1. Selection of candidate sites and selection of the study site by analyzing development factors; 2. Selection of target species that can represent the habitat at the site; 3. Analysis of the site's suitability index for the target species; 4. Establishment of a conceptual plan to enhance and expand the currently produced suitability index; 5. Creation of a master plan based on the conceptual plan; and 6. Evaluation of the enhanced and expanded suitability index of the site. The study showed that the Habitat Unit (HU) of Rana coreana, which was selected as the target species of the study, increased from $28,044m^2$(3.6%) to $224,352m^2$(28.8%), and the HU of the site as the ecological corridor for wild animals increased from $4,674m^2$(0.6%) to $152,684m^2$(19.6%). The study results show that the ecological deficits of the Green Belt Area can be overcome by enhancing the ecological functions of the region, which should be beneficial. The model could be utilized for effective enhancement and management of other Green Belt Areas.

• 한국산학기술학회논문지
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• 제12권9호
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• pp.4046-4053
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• 2011

종합검진센터에 방문한 성인 남녀 3281명을 대상으로 병원 밖에서 이루어지는 비만을 효율적이며 정확하게 진단하기 위하여 성별, 연령별 다른 신체 특성을 고려하여 체질량지수와 허리둘레의 절단값을 알아보고자 하였다. 대상자 3281명 중 남성은 1505명(45.9%), 여성은 1776명(54.1%)이었다. 평균 체지방량은 남성이 22.2%, 여성이 29.9%, 평균 체질량지수는 남성이 24.4kg/$m^2$, 여성이 22.9kg/$m^2$였으며, 평균 허리둘레는 남성이 86.2cm, 여성이 76.9cm이었다. 현재 일반적으로 사용되는 획일적인 체질량지수와 허리둘레 기준치는 성별, 연령별 달라지는 실제 체지방량을 잘반영한다고 볼 수 없으며, 향후 출장검진 시 신체계측만으로 비만을 진단할 때 보다 정확하게 하기 위해서 실제 체지방량을 고려한 새로운 기준치를 마련해야 할 것이다.

• Journal of Oral Medicine and Pain
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• 제47권3호
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• pp.135-143
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• 2022

Purpose: This study aimed to evaluate polysomnographic and cephalometric characteristics of patients with OSA according to obesity level based on the World Health Organization (WHO) Asian-Pacific BMI criteria. Methods: One hundred and thirty-one consecutive patients with obstructive sleep apnea (OSA) were evaluated using standard level 1 polysomnography and cephalometric analyses. The subjects were categorized into normal, overweight and obese groups according to the WHO Asian-Pacific BMI criteria. Respiratory indices and cephalometric parameters were compared among groups. Results: The 131 patients consisted of 111 males and 20 females, with a mean age of 44.1±12.4 years. The mean value of BMI was 25.3±3.4 kg/m² for all subjects, 20.6±2.2 kg/m² for normal (n=27), 24.0±0.5 kg/m² for overweight (n=33) and 27.6±2.2 kg/m² for obese (n=71). The obese group had a significantly higher apnea-hypopnea index (AHI) and respiratory arousal index and lower oxygen saturation level than the normal group (p<0.05). Total AHI, mean oxygen saturation level and respiratory arousal index were significantly correlated with BMI (p<0.001). A longer soft palate and anterior position of the hyoid bone were significantly correlated with BMI level (p ≤0.05). Conclusions: Obese patients have a higher risk of compromised craniofacial skeletal features and soft tissue structures, and severe OSA than non-obese patients.

• 생태와환경
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• 제39권1호통권115호
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• pp.62-72
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• 2006

수환경의 생물학적 건강도는 다양한 생물상을 이용하여 평가가 이루어져 왔으며 특히, 어류는 수환경의 건강성 평가를 위한 가장 좋은 생물종 중의 하나이다. 해부학적 기초에 의한 건강성 평가방법을 시도한 이번 예비실험의 목적은 대전시 갑천에 위치한 하수종맡처리장의 방류수가 수환경의 건강성에 어떤 영향을 미치는지 평가해 보는 것이다. 이러한 영향을 분석하기 위해 어류의 흉선(Thymus), 지느러미 (Fins), 지라 (Spleen), 후장 (Hindgut),신장 (Kidney), 피부 (Skin), 간 (Liver), 눈 (Eyes), 아가미(Gill), 및 헛아가미 (Pseudobranch)의 해부학적인 10개 메트릭을 이용하였다. 각각 2개의 대조군(control)과 처리군 (Treatment)으로 실험용 수조를 분리하여, 처리군에는 하수종말처리장의 방류수를 사용하였고 대조군에는 자연수를 사용하였으며, 각각의 수조에 버들치 (Rhynchocypris oxycephalus)를 5개체 씩 투여하였다. 투여한 버들치는 해부학적 측면의 관찰을 실시하였고, 이후 처리군의 죽은 버들치와 대조군의 개체를 각각 해부하고 10개 기관부위를 분석하여 HAI 건강도지수를 산정하였다. 해부하적 분석결과에 따르면, 3개의 대조군의 HAI지수는 0으로 나타나 최적상태로 판명되었고, 4 대조군은 40 ${\sim}$ 150점으로서 모두 악화상태로 나타났다. 또한, 생물통합지수 분석, 종풍부도분석, 내성도 및 트로픽길드 분석에 의거한 다양한 건강도 분석은 HAI 분석결과를 지지하였다. 본 HAI 기법은 현재 국내에서는 적용 평가된바 없어, 기존의 유수생태계의 건강도 평가에 상호보완적지수로의 활용도 가능할 것으로 사료된다.

• 한국광학회지
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• 제19권2호
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• pp.87-94
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• 2008

공초점 내시 현미경의 경우 살아있는(in vivo) 동물체들의 뇌 속에서의 암세포나 특정 세포를 분석할 수 있으며, 비 침습적으로 얻을 수 있는 기술과 동시에 실시간으로 암을 검출할 수 있는 장점이 있다. 공초점 내시 현미경의 경우 최소 직경과 고 분해능을 요하게 된다. 본 논문은 최소 직경을 가지는 GRIN 렌즈와 유동적으로 움직일 수 있는 광섬유 다발을 연결시킴으로써 보다 측정에 용이하도록 하였다. 직경이 1 mm이고 수치구경이 0.5이며 pitch가 0.25인 GRIN렌즈를 사용하였으며, 광섬유 다발은 30,000개의 코어로 구성된 유동적인 광섬유 다발을 사용하였다. 본 논문은 GRIN 렌즈에 의해서 발생되었던 구면수차는 광학보상자를 이용하여 보정하였다. 그 결과 설계되어진 공초점 내시 현미경 대물렌즈의 경우 종 분해능은 $1.63\;{\mu}m$이고 축상물점과 비축물점에서의 에너지 분포가 100%일 때 각각의 spot size는 축상물점에서 $0.3\;{\mu}m$ 비축물점에서 $0.83\;{\mu}m$의 결과를 얻었으며 보다 값싸고 제작에 용이한 양산 비구면 렌즈로 대체 구현된 결과에서는 종 분해능이 $1.74\;{\mu}m$이고, 축상 물점에 대한 spot size는 $1.1\;{\mu}m$이고 비축물점에서는 spot size가 $2.94\;{\mu}m$로 설계되었다.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 1999년도 Proceedings of International Symposium on Remote Sensing
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• pp.89-94
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• 1999

The paper first proposes an empirical algorithm for detecting dust-loaded airmass observed by Sea Wide Field-of-view Scanner (SeaWiFS). The proposed dust index formula is based on the curvature of the spectral reflectance estimated from the SeaWiFS band 4 (510 nm band) through band 8 (865 nm band) data, assuming "clear ocean water" reflectance. Evaluation of the algorithm is made over several typical Asian dust images including the ones over the Pacific in April, 1998, when a major dust event was reported. The study analyzes the performance and the characteristics of the algorithm by comparing the satellite-derived dust index images with contemporaneous columnar concentration of dust particles predicted by a numerical dust transport model. The comparison reveals several small-scale differences although their dust distribution patterns show good agreement generally.