양동마을 택지선정의 물리적 특성에 관한 연구

김난아,장석하,Kim, Nan-A,Jang, Suk-Ha 한국주거학회 2014 한국주거학회 논문집 Vol.25 No.6

In this study, there is a purpose of using the GIS DB built in DEM, by analyzing the physical characteristics of the building site Yangdong village, to determine the spatial structure of the village. In order to understand the targeted spatial structure of Yangdong Village, the building site was analyzed separately by type and position. Through analysis it is clear the selection of building site relates to the slope and aspect that aquires the most solar radiation in Yangdong Village. This study shows that the amount of solar radiation in the terrain is unfavorable in parts of the village because slope and elevation affect the selection of the building site. That is, this village is confirmed to be influenced by solar radiation, according to slope and elevation, based on how the Yangdong Village is configured. And, while overcoming the adverse conditions to make the most, the village is formed according to the natural environmental conditions.

하회마을 택지(宅地)선정의 물리적 특성에 관한 연구

김난아,장석하 대한건축학회지회연합회 2014 대한건축학회연합논문집 Vol.16 No.6

본 연구는 수치지형모델으로 구축된 공간속성데이터를 이용하여 하회마을 택지의 물리적 특성을 분석하고 마을공간구조를 규명하는데 목적을 두었다. 하회마을의 공간구조를 규명하기 위하여 건축대지를 길경계와 유형별로 구분하여 분석하였다. 하회마을과 같이 사계절 일사량이 확보되는 지형에서 표고와 경사도가 대지선정에 영향을 준 것으로 분석되었다. 즉, 하회마을은 사계절 일사량의 영향과 홍수피해로부터 안전한 최소높이의 표고에 따라 마을이 구성된 것으로 추정된다 In this study, there is a purpose of using the GIS DB built in DEM, by analyzing the physical characteristics of the building site Hahoe village, to determine the spatial structure of the village. In order to understand the targeted spatial structure of Hahoe Village, the building site was analyzed separately by type and boundary of the road. Through analysis it is clear the selection of building site relates to the elevation and slope that acquires the most solar radiation in Hahoe Village. We assume that the building site in hahoe village was formed by considering the slope and elevation to minimize flood damage and solar radiation of the four seasons.

Effects of controlled TEOS deposition and phosphorous doping on ethylene to propylene reaction over SSZ-13 catalyst

김난아,김주완,김태완,전종원,김철웅,정용주 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.1

Propylene is very important raw material for polypropylene, propylene oxide and acrylonitrile, and usually produced from naphtha cracking or dehydrogenation of propane. The direct conversion of ethylene to propylene (ETP) reaction attracts much attention recently because the supply of propylene might be deficient in near future considering the rapid increasing ethylene supply from ethane cracker and shale gas. SSZ-13 catalyst for ETP reaction is very interesting considering the high propylene yield and relatively good stability. In this study, ETP reaction was carried out over SSZ-13 and modified SSZ-13 catalysts at 330°C, 1 atm. SSZ-13 catalyst was modified by phosphorus doping and a chemical liquid deposition (CLD) technique using TEOS. It was found that the order of propylene yield was P treatment > CLD technique using TEOS > untreated one. This enhance activity by a phosphorus doping treatment would be caused due to lowering a strong acidity in TPD result.

韓國傳統住宅안채의 地域的特性에 관한 硏究

김난아,장석하 대한건축학회지회연합회 2007 대한건축학회지회연합회 학술발표대회논문집 Vol.2007 No.1

This purpose of this study is verify on the regional identity space of inner quarters(An-chae) in the traditional dwellings. Through the study, it is maintained that the space of inner quarters and the elements of exterior space are very important to determine the type and role of the Toi.. The Toi of Chungchong is the general type which is composed of horizontal row of Tiogan in front of the Daechung and vertical row of the Tiogan in side of the room(an-bang). The Toi of Jeolla, Gyeongnam is the general type which is in front and in the rear of the 대청 and in side of the inner quarters(An-chae). The Toi of the Gyeongbuk is the general type which is front and rear of the Daechung and it is a type not to be in the side of the inner quarters(An-chae). The Toi that connective up the space of inner and outer quarter plays roles: private space, approach space, storage space, community space, connective space, open space and so on.

근관세정제와 상호작용시 Hydroxyethylidene bisphosphonate (HEBP)의 조직용해능력, 항균효과에 대한 연구

김난아(Ranah Kim),김윤건(Yoon Gun Kim),김미연(Mi-Yeon Kim),송병철(Byung Chul Song),김선호(Sun-ho Kim),김정희(Jeong-hee Kim) 대한턱관절교합학회 2017 구강회복응용과학지 Vol.33 No.2

고령의 한국인에서 상악 구치부와 상악동의 근접도 및 피질판 두께에 대한 CBCT 평가

김성은,김난아,김선호,김정희,김미연 대한통합치과학회 2022 대한통합치과학회지 Vol.11 No.3

Cone-beam computed tomography (CBCT) can provide high resolution images and three-dimensional (3D) volumetric data. It can be used as a reliable diagnostic tool to evaluate tooth morphology and relationship of teeth with surrounding anatomical structures. Many previous studies indicate that the age of the subject had a significant effect on alveolar bone resorption. Alveolar bone resorption can cause severe dental problems to patients, especially to the elderly population. The aim of this study is to evaluate the anatomical relationships of maxillary posterior roots to the maxillary sinus and cortical plates in elderly Korean population using cone-beam computed tomographic (CBCT) images. CBCT images of 1906 patients who visited the VHS medical center dental hospital from January 2020 to August 2020 were retrospectively analyzed in this study. A total of 3909 teeth (2355 maxillary second premolars, 1554 maxillary first molars) were examined. Anatomical relationships of maxillary second premolars and first molars were studied by measuring the distance from each root apex to the sinus floor and to cortical plates using CBCT images in both sagittal and coronal planes. The variables were expressed as mean values±standard deviation. The independent samples were analyzed using the t-test (p<0.05). The majority of maxillary second premolars had single root (95%), and the remaining 5% of second premolars had two separate roots. There was one maxillary second premolar presented an accessory root. Similarly, 99% of maxillary first molars had three separate roots, and only 1% of first molars presented an accessory root. The mean distances from root apex to the sinus floor were shorter in maxillary first molars (3.74 to 4.43 mm) than second premolars (4.60 to 5.07 mm). The frequency of a root protrusion into the maxillary sinus was high in palatal roots of maxillary first molars than other roots. In terms of cortical plate thickness, maxillary second premolars had thicker cortical plates than maxillary first molars. The mean distances from root apex to the sinus floor were shorter in maxillary first molars than second premolars. The frequency of a root protrusion into the maxillary sinus was high in palatal roots of maxillary first molars than other roots. In terms of cortical plate thickness, maxillary second premolars had thicker cortical plates than maxillary first molars. Knowledge of approximate values of cortical bone thickness and distance to the sinus floor could help clinicians to avoid iatrogenic damage during conventional and surgical endodontic treatments.

백내장 수술을 받는 환자에게 시행한 자가진정통증조절법

오용석,전영태,김난아 대한마취과학회 2001 Korean Journal of Anesthesiology Vol.41 No.1

Hsp90 저해기전을 가진 천연물들의 최근 연구동향

오연일,이용섭,김난아,김예현,이태훈 한국생약학회 2013 생약학회지 Vol.44 No.3

Heat shock protein 90 (Hsp90) is a molecular chaperone that assists protein folding and contributes to the stability of various proteins. It also stabilizes a number of proteins involved in tumor growth to consider it as a promising target for the treatment of cancer. Natural products have been a rich source of agents of value in medicine, therefore discovering lead compounds from them is one of important strategy in the drug development. In this regard, geldanamycin, radicicol, novobiocin and celastrol have been utilized as leads for the development of Hsp90 inhibitory anticancer agents. This review summerizes recent findings of natural products as Hsp90 inhibitiors. The Hsp90 inhibitory activities, mode of actions on Hsp90 and cytotoxicities on human cancer cell lines of natural products including bulgarialactone B, curcumin, (-)-gambogic acid, quercetin,sansalvamide A, silybin, and withaferin A were discussed.

부비동내시경수술을 받은 환자에게 시행한 자가진정통증조절법의 유효성에 대한 평가

서광석,오용석,전영태,김난아 대한마취과학회 2001 Korean Journal of Anesthesiology Vol.40 No.1

Background: Patients receiving surgery under local anesthesia might feel anxiety during surgery and suffer pain due to the insufficiency of local anesthesia. The purpose of this study was to evaluate the efficacy and side effects of patient-controlled sedation and analgesia in patients undergoing endoscopic sinus surgery (ESS). Methods: We studied 63 adult patients. A mixture of 400 mg of propofol and 200㎍ of fentanyl (total 44 ml) was infused to the patient at a rate of 10 ml/hr using a PCA device. The lock-out time was 1 minute and the bolus dose was 1 ml. During surgery, we monitored vital signs and sedation state. At the end of surgery. we assessed the degree of satisfaction about pain and anxiety relieving effects by using a questionnaire with a 1 to 10 scale. Results: About 90% of patients were wide awake during surgery, others were drowsy or intermittently sleeping. About 95% of the patients were satisfied with anxiety relief (more than a score of 8) and 84% were satisfied with pain relief in painful episodes (more than a score of 8). Vital signs were within normal limits. The oxygen saturation was maintained above 94% during surgery, except three patients whose oxygen saturation was 92% for short while. Twenty-two percent of the patients complained of pain at their drug infusion sites. Conclusions: We concluded that patient-controlled sedation and analgesia using the mixture of fentanyl and propofol might be a good way to relieve patient's anxiety and pain without respiratory depression and excessive sedation for those undergoing ESS under local anesthesia. (Korean J An- esthesiol 2001; 40: 54 ~59)

회복실에서 정상체운 회복을 위한 피부 가온요법의 효과에 관한 연구

권은옥,김수경,구정애,전상은,김정연,최미정,김난아,양수임 병원간호사회 1998 임상간호연구 Vol.4 No.1

Management of shivering and hypothermia in the immediate postoperative period is a major concern of postanesthesia nurse. This study compared time required to rewarm, incidence of shivering, in hypothermic post operative patients treated with a forced air warmer and warming pad. The purpose of this study is to develop effective nursing intervention methods to rewarm post operative general surgery patients. External Warming methods principally act by preventing convective heat loss from the skin to the environment. Most of the newer methods of external warming claim to produce active heat gain from the environment to the skin. The degree to which a warming method results in heat gain from the environment will depend not only on the amount of heat the instrument produces, but also in its success at maintaining that heat near the skin. This study was to compare time required to rewarm postoperative general anesthesia patients and incidence of shivering in patients treated with forced warm air versus patients treated with a warm pad. In addition, information on vital sign changes, patient's discomforts, general characteristics were gathered. We use non equivalent quasi-experimental study design. The Experimental groups were treated with forced warm air & The Comparative groups were treated with warm pad. We measured vital signs, shivering scale, patients discomforts until the patient's temperature recovered normal body temperature. Axillary temperature was measured using ⅣAC temp plus Ⅱ. The ⅣAC temp plus Ⅱ thermometer was calibrated internally prior to study. Necessary calibration adjustments occur automatically through a microprocessor program when the probe is returned to its holder. The Warm Touch system was used to supply warm air. Warm pad was supplied using the K thermia. Patients were randomly assigned to treatment. Data were collected on 20 experimental group & 20 comparative group. Data were measured for 50 minutes & analyzed with SPSS PC statistic package. There were no significant differences between the experimental group & the comparative group. The warm air subjects showed neither significant higher skin temperature nor lower incidence of shivering in warm pad group. The relationships between two group time to rewarm & shivering is obscured. Patients in the warm air & the warm pad groups rewarm at nearly equal rates. We conclude rewarming equipment doesn't affect patient's temperature recovering time and incidence of shivering in immediate post operative period. Therefore it's necessary to study the effect of rewarming machine for patient's thermo-resuscitation in PACU repeatedly. We suggest that the research on rewarming in PACU patients should be repeated by various nursing intervention methods.