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김삼용,김현수,김종숙,박상준,최지영,윤환중,조덕연 충남대학교 의과대학 지역사회의학연구소 1995 충남의대잡지 Vol.22 No.2
Objectives : Clinical management of patient with lymphadenopathy requires judicious judgement of clinicians. Careful evaluation of lymph node enlargement by various clinical parameters will help to disclose the etiology of lymph node enlargement. This study was conducted to identify the clinical manifestations and etiology of lymphadenopathy in korean patients. Methods : A total 192 patients with lymph node enlargement were studied retrospectively. All patients who underwent excisional lymph node biopsy during the period from January 1992 to July 1994 were included. The lymph node biopsy and clinical records were reviewed and patient characteristics were analyzed by various clinical parameters. Results : A female predominance was noted in lymphadenopathy of tuberculosis (58.5%), Kikuchi's syndrome (70%). In lymphadenopathy of nonspecific, tuberculosis, kikuchi syndrome, per centage of patients younger than 40 years of age were 84.5%, 75.6%, 100%, respectively. In lymphadenopathy of tuberculosis and metastatic cancer, the duration of lymphadenopathy below 30days were 51.2%, 73.9%, respectively. The two most common etiology of cervical lymphadenopathy were nonspecific lymphadenitis (47.7%) and tuberculous (26.8%). The two most frequent etiology of supraclavicular lymphadenopathy were nonspecific lymphadenitis (46.3%) and metastatic lymphadenopathy (26.8%) and the most common etiology of axillary lymphadenopathy was nonspecific lymphadenopathy (34.5%). The most common frequent of lymph node enlargement with size below 1㎠ was nonspecific lymphadenitis, while above 2.25㎠ it was metastatic lymphadenopathy. Conclusion : Careful evaluation regarding patient age, sex, size of lymph node, consistency, location of lymph node, presence or absence of systemic symptoms should be pursued before performing a biopsy and management.
Hyen Chung Chun,Ki-Yuol Jung,Young Dae Choi,Su-min Jo,Sanghun Lee,Byung-Keun Hyun,Kooksik Shin,Yeonkyu Sonn,Hang-Won Kang 한국토양비료학회 2015 한국토양비료학회지 Vol.48 No.5
Human influence on soil formation has dramatically increased with human civilization and industry development. Increase of anthropogenic soils induced researches on the anthropogenic soils; classification, chemical and physical characteristics of anthropogenic soils and plant growth from anthropogenic soils. However there have been no comprehensive analyses on soil pore or physical properties of anthropogenic soils from 3 dimensional images in Korea. The objectives of this study were to characterize physical properties of anthropogenic paddy field soils by depth and to find differences between natural and anthropogenic paddy field soils. Soil samples were taken from two anthropogenic and natural paddy field soils; anthropogenic (A_c) and natural (N_c) paddy soils with topsoil of coarse texture and anthropogenic (A_f) and natural (N_f) paddy soils with topsoil of fine texture. The anthropogenic paddy fields were reestablished during the Arable Land Remodeling Project from 2011 to 2012 and continued rice farming after the project. Natural paddy fields had no artificial changes or disturbance in soil layers up to 1m depth. Samples were taken at three different depths and analyzed for routine physical properties (texture, bulk density, etc.) and pore properties with computer tomography (CT) scans. The CT scan provided 3 dimensional images at resolution of 0.01 mm to calculate pore radius size, length, and tortuosity of soil pores. Fractal and configuration entropy analyses were applied to quantify pore structure and analyze spatial distribution of pores within soil images. The results of measured physical properties showed no clear trend or significant differences across depths or sites from all samples, except the properties from topsoils. The results of pore morphology and spatial distribution analyses provided detailed information of pores affected by human influences. Pore length and size showed significant decrease in anthropogenic soils. Especially, pores of A_c had great decrease in length compared to N_c. Fractal and entropy analyses showed clear changes of pore distributions across sites. The topsoil layer of A_c showed more degradation of pore structure than that of N_c, while pores of A_f topsoil did not show significant degradation compared with those of N_f. These results concluded that anthropogenic soils with coarse texture may have more effects on pore properties than ones with fine texture. The reestablished paddy fields may need more fundamental remediation to improve physical conditions.
Comparison of pore shapes and water retention curves between anthropogenic and natural paddy fields
Hyen Chung Chun(전현정),Ki-Yuol Jung(정기열),YoungDae Choi(최영대),Su-min Jo(조수민),Sanghun Lee(이상훈),Byung-Keun Hyun(현병근),kook-sik Shin(신국식),Yeon-kyu Sonn(손연규),Hang-Won Kang(강항원) 한국토양비료학회 2015 한국토양비료학회 학술발표회 초록집 Vol.2015 No.12
Chun, Hyen Chung,Jung, Ki-Yuol,Choi, Young Dae,Jo, Su-min,Lee, Sanghun,Hyun, Byung-Keun,Shin, Kooksik,Sonn, Yeonkyu,Kang, Hang-Won 한국토양비료학회 2015 한국토양비료학회지 Vol.48 No.5
Human influence on soil formation has dramatically increased with human civilization and industry development. Increase of anthropogenic soils induced researches on the anthropogenic soils; classification, chemical and physical characteristics of anthropogenic soils and plant growth from anthropogenic soils. However there have been no comprehensive analyses on soil pore or physical properties of anthropogenic soils from 3 dimensional images in Korea. The objectives of this study were to characterize physical properties of anthropogenic paddy field soils by depth and to find differences between natural and anthropogenic paddy field soils. Soil samples were taken from two anthropogenic and natural paddy field soils; anthropogenic (A_c) and natural (N_c) paddy soils with topsoil of coarse texture and anthropogenic (A_f) and natural (N_f) paddy soils with topsoil of fine texture. The anthropogenic paddy fields were reestablished during the Arable Land Remodeling Project from 2011 to 2012 and continued rice farming after the project. Natural paddy fields had no artificial changes or disturbance in soil layers up to 1m depth. Samples were taken at three different depths and analyzed for routine physical properties (texture, bulk density, etc.) and pore properties with computer tomography (CT) scans. The CT scan provided 3 dimensional images at resolution of 0.01 mm to calculate pore radius size, length, and tortuosity of soil pores. Fractal and configuration entropy analyses were applied to quantify pore structure and analyze spatial distribution of pores within soil images. The results of measured physical properties showed no clear trend or significant differences across depths or sites from all samples, except the properties from topsoils. The results of pore morphology and spatial distribution analyses provided detailed information of pores affected by human influences. Pore length and size showed significant decrease in anthropogenic soils. Especially, pores of A_c had great decrease in length compared to N_c. Fractal and entropy analyses showed clear changes of pore distributions across sites. The topsoil layer of A_c showed more degradation of pore structure than that of N_c, while pores of A_f topsoil did not show significant degradation compared with those of N_f. These results concluded that anthropogenic soils with coarse texture may have more effects on pore properties than ones with fine texture. The reestablished paddy fields may need more fundamental remediation to improve physical conditions.