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이창배,조현재,천정화,송호경,김형호 경상대학교 농업생명과학연구원 2013 농업생명과학연구 Vol.47 No.5
This study was conducted to compare species and functional diversity of terrestrial plants among forest types by analyzing the variations in species and functional trait compositions in a large-scale natural forest ecosystem. Plant data were collected at 1,100 plots and a total of 802 plant species from 97 families and 342 genera were found along the ridge of the Baekdudaegan Mountains in South Korea. Forest types were divided into four categories including Quercus mongolica, Pinus densiflora, other deciduous and other coniferous forest types. To analyze the variations in plant diversity among forest types, we used two species diversity indices such as species richness and the Shannon-Weaver index as well as a newly introduced functional diversity such as Rao’s index. In functional trait composition, megaphanerophyte, geophyte and hemicryptophyte were the dominant traits, whereas the relative proportion of helophyte and hydrophyte and epiphyte indicated less than 1%. In diversity patterns among forest types, species richness and diversity for total plants showed the lowest value in P. densiflora forest type, while other deciduous and Q. mongolica forest types had the highest values of species richness and diversity for woody and herbaceous plants, respectively. However, functional diversity did not depict a clear distinction among four forest types for plant groups. This study suggests that although taxonomical richness and diversity may be different among forest types, there may be no differences in functional diversity. Moreover, these indistinct patterns in functional diversity may be a result of disturbance and successional gradients compounded in a forest type in addition to the type of functional traits used for comparison and contrast among forest types. Therefore, a further study with various functional traits and different environmental gradients should be consistently evaluated to achieve a better understanding of the diversity patterns of plant communities in mountain ecosystems.
외이도 폐쇄증과 와우 및 와우신경 기형을 동반한 소아 환자에게 시행한 인공와우이식 1예
이창배,정성욱,홍승우 대한이비인후과학회 2020 대한이비인후과학회지 두경부외과학 Vol.63 No.10
Congenital aural atresia (CAA) is usually accompanied by an anomalous course of facialnerves, which may run over the round window niche toward the promontory in some cases ofCAA. Very rarely, cochlear malformation might coexist at the same ear which has CAA, inwhich case cochlear implantation can be difficult due to anomalous facial nerve. Herein wepresent a case of cochlear implantation performed in a child who had CAA along with cochlearhypoplasia and cochlear nerve aplasia. The mastoid segment of facial nerve was displacedanteriorly, running over the round window niche. The surgery was done successfully usingthe round window approach without facial nerve injury.
이창배,허재원,박민경,이동근,Lee, Chang Bae,Heo, Jae Won,Pak, Min Gyoung,Lee, Dong Kun 대한후두음성언어의학회 2021 대한후두음성언어의학회지 Vol.32 No.2
Plasma cell mucositis is a very rare benign disease characterized by dense lymphoplasmacytic infiltration in the submucosa layer. It appears as a reddish ulcer on the mucous membrane or as a cobblestone or nodular mass on the affected mucosa. When it involves the pharynx or larynx, the patient presents with dysphagia, voice change and dyspnea. Clinically, it is important to differentiate with malignant diseases such as extramedullary plasmacytoma, amyloidosis and sarcodosis. Several cases of mucositis in the larynx have been reported in English literature, but none have been reported in Korea. We report a case of plasma cell mucositis in the larynx with a review of literature.
백화산 지역 고도별 식물 다양성 분포 패턴 및 제어인자
이창배,김형호 경상대학교 농업생명과학연구원 2017 농업생명과학연구 Vol.51 No.4
본 연구는 백화산 지역의 고도별 식물 종풍부도 패턴 및 서식지 인자인 면적, 경사도와 기후 인자인 연평균 기온 및 강수량이 고도별 식물 종풍부도 패턴에 미치는 효과를 구명하기 위해 수행되었다. 식생 조사 결과, 목본 식물 66종, 초본 식물 88종, 총 154종의 식물종이 관찰되었다. 고도에 따라 전체 식물 종 및 목본 식물종의 풍부도는 감소하는 패턴을 나타낸 반면, 초본 식물종의 풍부도는 특정 패턴을 나 타내지 않았다. 또한, 이러한 분포 패턴을 제어하는 인자로서 단순회귀 분석 및 편회귀 분석을 통한 변 이분할 결과, 서식지 인자인 면적과 기후 인자인 연평균 기온 및 강수량이 목본 식물 종풍부도를 예측 하는 가장 중요한 인자로 나타났으며, 서식지 인자인 경사도가 초본 식물 종풍부도를 제어하는 중요한 인자로 나타났다. 또한, 전체 식물종의 풍부도를 예측하는데 있어서 서식지 인자인 면적과 경사도가 중 요한 인자로 나타났다. 본 연구는 소규모 개별 산림에 자생하는 식물이라고 하는 동일한 분류군 내에서 도 식물 그룹에 따라 고도별 분포 패턴 및 제어인자가 상이하다는 것을 제시하며, 백화산 지역의 식물 다양성을 제어하는 인자가 단순히 하나가 아닌 몇 가지 인자에 의한 복합작용에 의해 나타나는 현상임 을 의미한다. In this study, we studied the elevational patterns of plant species richness and examined the effects of habitat variables such as area and slope and climatic variables such as mean annual temperate and precipitation on the observed richness patterns along an elevational gradient on the Mt. Baekhwa, South Korea. A total of 154 plant species including 66 woody and 88 herbaceous species were recorded from field survey. The total and woody species richness along the elevational gradient showed significant monotonic decline patterns, whereas the herbaceous species richness did not showed a specific elevational pattern. Based on simple ordinary least squares regression and variance partitioning with partial regression, the area, mean annual temperature and precipitation were the most powerful explanatory variables for woody plant richness and slope was the most important variable for herbaceous plant richness. Finally, the area and slope were the important variables to predict total plant richness. This study suggests that different elevational patterns may be observed between different plant groups even in the same taxon and that a combined interaction of some factors influences plant richness pattern along the elevational gradient on the Mt. Baekhwa, South Korea.
이창배,김상준 대한이비인후과학회 2021 대한이비인후과학회지 두경부외과학 Vol.64 No.4
Background and Objectives Olfaction plays an important role on sensing and discriminatingsmell and taste. The number of patients visiting outpatient department for treatment of olfactorydysfunction is increasing along with the change in patients’ perception about the importanceof olfactory function. Subjects and Method Patients with olfactory dysfunction, who visited the hospital from2010 to 2018, were included in this study. The medical records were reviewed focusing on theKorean Version of Sniffin’ Stick, the CT finding of olfactory cleft or signs of sinusitis, and theeffect of oral steroids. Postviral olfactory disorder (PVOD) patients and chronic rhinosinusitis(CRS) patients were treated by oral steroid, starting on prednisolon (Solondo Tab®, YuHanCorp.; 40 mg per day) and tapered for 2 weeks. Results There were 13 cases where patients’ sense of smell was improved only for a shortperiod of time after taking steroids but worsened thereafter. They showed improvement of olfactoryfunction every time they took steroids. We defined this group as “steroid dependentolfactory dysfunction.”Conclusion It is necessary to understand the physiology and molecular biologic mechanismsbehind the causes of olfactory dysfunction in order to establish the diagnostic criteria andtreatment strategy. Steroid dependent olfactory dysfunction also needs more investigation.