• 제목/요약/키워드: Stage I and II

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복강경 보조 원위 위 절제 환자의 장기적인 '삶의 질' 평가 (Long Term Impact of Laparoscopic Assisted Distal Gastrectomy on Quality of Life)

  • 김동원;김용진;김민주;조규석;김형수;이문수;김재준;이민혁;문철
    • Journal of Gastric Cancer
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    • 제7권4호
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    • pp.213-218
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    • 2007
  • 목적: 조기위암 수술에 복강경 적용의 용이성 및 종양학적 안정성에 대해서는 많은 연구가 아루어지고 있으나, 복 강경 적용의 또 다른 목적인 '삶와 질' 향상에 대한 연구 는 아직 미흡한 현실이다. 이에 저자들은 위암 수술에 복강경 적용이 '삶의 질' 향상에 미치는 장기적 영향을 평가 하고자 본 연구를 고안하였다. 대상 및 방법: 2003년 1월부터 2004년 12월까지만 2년간 순천향대학병원 외과에서 위 절제 수술 후 위암 1기로 진단된 154명의 환자들을 대상으로 수술 후 1년 이상 경과한 시점에서 설문조사를 시행하였다. EORTC OLQ-C30(3판)과 EORTC QLQ-ST022 한글판을 이용하여 한 명의 전문 간호사에 의해 외래 방문 시 직접 면담 혹은 전화 상담을 통해 설문조사를 시행했으며, 통계처리는 SPSS 12.0 for Windows를 이용하였다. 결과: 전체 대상 환자 154명 중 86명에서 설문 조사가 이루어져 58%의 응답률을 보였으며, 86명(개복군: 57명, 복강경군: 29명)의 평균 연령은 55세였고, 남자가 60명 여자가 26명으로 남녀 비는 2.3 : 1 이었다. 개복 군의 종양 크기는 평균 2.42 cm로 복강경군의 평균 종양 크기 1.8 cm에 비해 유의하게 크기가 컸으며(P=0.003), 평균 획득 림프절 수도 개복 군에서 36개로 유의하게 더 많았다(P=0.000). 그 외 종양관련 인자인 원발암와 침윤도, 림프절 전이 및 TNM 병기에 있어서 양 군 간에 차이는 없었다. 전반적인 건강 상태와 관련된 2 항목의 평균 점수는 개복 군이 57 (${\pm}20.6$), 복강경 군이 60.3 (${\pm}20.4$)으로 양 군 간에 유의한 차이는 없었으며, 기능과 관련된 15 항목과 증상과 관련된 13항목에 있어서도 양군 간에 유의한 차이는 없었다. EORTC QLQ-STO22를 이용한 '삶의 질' 비교 결과 개복군의 평균 점수는 94.5 (${\pm}97.3$), 복강경군은 68.9 (${\pm}64.9$)로 개복군에서 전반적으로 불편한 증상을 많이 호소하였으나 통계학적인 차이는 없었다. 결론: EORTC QLQ-C30 (3판)과 EORTC QLQ-STO22 한글판을 이용한 설문조사 결과 장기적인 측면에서 위 절제술에 복 강경 적용이 환자의 '삶의 질' 향상에 영향을 미치지 못했다.

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비소세포성 폐암의 방사선치료 성적 (Therapeutic Results of Radiotherapy in Nonsmall Cell Lung Cancers)

  • 신세원;김성규;김명세
    • Journal of Yeungnam Medical Science
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    • 제11권1호
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    • pp.72-81
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    • 1994
  • 1986년 5월 1일부터 1993년 4월 30일까지 비소세포성 폐암으로 확진된 후 수술이 불가능하거나 거부하여 4500cGy에서 6500cGy의 방사선치료를 시행한 55명을 대상으로 임상적 특징, 치료실패양상, 추적조사기간, 예후인자에 따른 생존율의 비교, 치료후 1년 및 2년의 생존율을 후향적으로 조사하여 다음의 결과를 얻었다. 1. 남자가 여자에 비해 17.3배 많았으며 50대와 60대가 가장 많았다. 2. T3가 30명(54.6%)으로 가장 많았으며 T2가 17명(30.9%)이었다. 3. 임파선전이가 없는 경우가 21명(38.2%)이었고 임파선 전이는 N2가 20명(36.4%)으로 가장 많았다. 4. 임상적 병기는 IIIA가 34명(61.8%)으로 가장 많았으며 IIIB는 13명(23.6%)이었다. 5. 병리조직학적 분포에서 편평세포암이 45명(81.8%)으로 가장 많았으며 선암은 5명(9.1%)이었다. 6. 발생부위는 좌상엽이 18명(32.7%)으로 가장 많았으며 우상엽은 13명(23.8%)이었다. 7. 편평세포암 45명중 중등도의 분화를 보인 것은 15명이었으며 분화가 불량한 경우도 10명이었다. 8. 선암 5명중 2명이 여자였으며 3명은 분화가 불량하였다. 9. 원발병소의 크기는 국소관해율에 영향을 주었으며 T4인 경우에는 원격전이에도 다소 영향을 주었다. 10. 지역 임파선의 침범정도는 국소 및 지역임파선재발에 영향을 주었으며 특히 N3인 경우에는 치료후 50%에서 원래병소부위에 재발을 보였다. 11. 국소및 지역임파선재발은 폐종양의 재성장이 가장 많았으며 상대정맥증후군 및 암성 늑막 삼출액, 쇄골상와 임파선 재발의 순이었다. 12. 원격전이는 골전이가 가장 많았으며 다음이 간, 뇌의 순이었다. 13. 편평세포암에서 선암에 비교하여 평균생존기간이 약 3~4개월 길었으며 분화도에 따라 약 3개월정도 생존기간의 차이를 보였다. 14. 발생부위에 따른 생존기간은 중앙부의 기관지에 발생한 경우가 말초부위에 발생한 경우에 비해 2개월정도 길었다. 15. 원발종양의 크기에 따른 생존율은 1년에서 T1, T2가 높았으나 큰 차이가 없었으며 2년에서는 T1, T2가 T3, T4보다 2배이상 높았다. 16. 임파선 전이에 따른 생존율은 1년과 2년에서 NO, N1이 N2, N3에 비해 약 1.5배 높았다. 이상의 결과를 종합하면 원발병소의 크기가 큰 경우, 임파선전이가 있는 경우, 분화도가 낮은 경우, 선암인 경우에는 고선량의 방사선치료와 전신적인 항암제의 투여 및 수술의 병합을 적극적으로 검토할 필요성이 있으며 다분할 조사와 총조사선량의 증대 및 다분야 병합치료를 시도하므로 국소관해율의 증가와 생존율의 향상을 위한 더욱 개선된 폐암치료의 개발에 임상 각 분야 전문가들의 집약된 노력이 요구된다.

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Physiochemical characteristics and fermentation ability of milk from Czech Fleckvieh cows are related to genetic polymorphisms of β-casein, κ-casein, and β-lactoglobulin

  • Kyselova, Jitka;Jecminkova, Katerina;Matejickova, Jitka;Hanus, Oto;Kott, Tomas;Stipkova, Miloslava;Krejcova, Michaela
    • Asian-Australasian Journal of Animal Sciences
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    • 제32권1호
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    • pp.14-22
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    • 2019
  • Objective: The aim of the study was to find a possible association between the ${\beta}-$ and ${\kappa}-casein$ and ${\beta}-lactoglobulin$ genotypes and important milk physiochemical and technological characteristics such as acidity, alcohol stability, the contents of some minerals and the parameters of acid fermentation ability (FEA) in Czech Fleckvieh Cattle. Methods: Milk and blood samples were collected from 338 primiparous Czech Fleckvieh cows at the same stage of lactation. The genotypes of individual cows for ${\kappa}-casein$ (alleles A, B, and E) and ${\beta}-lactoglobulin$ (alleles A and B) were ascertained by polymerase chain reaction-restriction fragment length polymorphism, while their ${\beta}-casein$ (alleles $A^1$, $A^2$, $A^3$, and B) genotype was determined using melting curve genotyping analysis. The data collected were i) milk traits including active acidity (pH), titratable acidity (TA), alcohol stability (AS); calcium (Ca), phosphorus (P), sodium (Na), magnesium (Mg), and potassium (K) contents; and ii) yoghurt traits including active acidity (Y-pH), titratable acidity (Y-TA), and the counts of both Lactobacilli and Streptococci in 1 mL of yoghurt. A linear model was assumed with fixed effects of herd, year, and season of calving, an effect of the age of the cow at first calving and effects of the casein and lactoglobulin genotypes of ${\beta}-CN$ (${\beta}-casein$, CSN2), ${\kappa}-CN$ (${\kappa}-casein$, CSN3), and ${\beta}-LG$ (${\beta}-lactoglobulin$, LGB), or the three-way interaction between those genes. Results: The genetic polymorphisms were related to the milk TA, AS, content of P and Ca, Y-pH and Lactobacilli number in the fresh yoghurt. The CSN3 genotype was significantly associated with milk AS (p<0.05). The effect of the composite CSN2-CSN3-LGB genotype on the investigated traits mostly reflected the effects of the individual genes. It significantly influenced TA (p<0.01), Y-pH (p<0.05) and the log of the Lactobacilli count (p<0.05). Conclusion: Our findings indicate that the yoghurt fermentation test together with milk proteins genotyping could contribute to milk quality control and highlight new perspectives in dairy cattle selection.

Multivariate Analysis of Prognostic Factors in Male Breast Cancer in Serbia

  • Sipetic-Grujicic, Sandra Branko;Murtezani, Zafir Hajdar;Neskovic-Konstatinovic, Zora Borivoje;Marinkovic, Jelena Milutin;Kovcin, Vladimir Nikola;Andric, Zoran Gojko;Kostic, Sanja Vladeta;Ratkov, Isidora Stojan;Maksimovic, Jadranka Milutin
    • Asian Pacific Journal of Cancer Prevention
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    • 제15권7호
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    • pp.3233-3238
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    • 2014
  • Background: The aim of this study was to analyze the demographic and clinical characteristics of male breast cancer patients in Serbia, and furthermore to determine overall survival and predictive factors for prognosis. Materials and Methods: In the period of 1996-2006 histopathological diagnosis of breast cancer was made in 84 males at the Institute for Oncology and Radiology of Serbia. For statistical analyses the Kaplan-Meier method, long-rank test and Cox proportional hazards regression model were used. Results: The mean age at diagnosis with breast cancer was $64.3{\pm}10.5$ years with a range from 35-84 years. Nearly 80% of the tumors showed ductal histology. About 44% had early tumor stages (I and II) whereas 46.4% and 9.5% of the male exhibitied stages III and IV, respectively. Only 7.1% of male patients were grade one. One-fifth of all patients had tumors measuring ${\leq}2cm$, and 14.3% larger than 5 cm. Lymph node metastasis was recorded in 40.4% patients and 47% relapse. Estrogen and progesterone receptor expression was positive in 66.7% and 58.3%, respectively. Among 14.3% of individuals tumor was HER2 positive. About two-thirds of all male patients had radical mastectomy (66.7%). Adjuvant hormonal (tamoxifene), systematic chemotherapy (CMF or FAC) and adjuvant radiotherapy were given to 59.5%, 35.7% and 29.8% patients respectively. Overall survival rates at five and ten years for male breast cancer were 55.0% and 43.9%, respectively. According to the multivariate Cox regression predictive model, a lower initial disease stage, a lower tumor grade, application of adjuvant hormone therapy and no relapse occurrence were significant independent predictors for good overall survival. Conclusions: Results of the treatment would be better if disease is discovered earlier and therefore health education and screening are an imperative in solving this problem.

자음강화탕(滋陰降火湯)이 Propylthiouracil(PTU)로 유발된 Rat의 갑상선기능저하증에 미치는 영향 (Effects of Jaeumkanghwa-tang on the Rat Hypothyroidism Induced by Propylthiouracil (PTU))

  • 김석중;김동철
    • 대한한방부인과학회지
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    • 제27권1호
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    • pp.41-64
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    • 2014
  • Objectives: This study was to evaluate the effect of Jaeumkanghwa-tang (JEKHT) on the propylthiouracil (PTU)-induced rat hypothyroidism. Methods: Six groups, each of 8 rats per group were used in the present study - intact vehicle control, PTU control, Levothyroxine ($LT_4$), JEKHT 500, 250 and 125 mg/kg treated groups. JEKHT were administered once a day for 42 days as an oral dose of 500, 250 and 125 mg/kg, and hypothyroidism was induced by daily subcutaneous treatment of PTU 10 mg/kg for 28 days. The changes on the body and organ weight, serum hormone and lipid profiles, liver and testis antioxidant defense factors were observed with histopathology of organs. Results were compared with $LT_4$ 0.5 mg/kg intraperitoneally treated rats in this experiment. Results: PTU treatment, marked decrease of body weight, increases of thyroid weight, decreases of liver, testis, epididymis and prostate weights, decreases of serum Tri-iodothyronine ($T_3$), and Thyroxine ($T_4$) level with increase of serum Thyroid-stimulating hormone (TSH) level, decreases of serum testosterone and dihydrotestosterone (DHT) level with increases of serum Follicular stimulating hormone (FSH) level, increases of serum High density lipoprotein (HDL), decrease of triglyceride content, increase of serum Aspartate aminotransferase (AST) level, decreases of liver and testis antioxidant defense factors were observed. In addition, marked hyperplasia of follicular cells with decreases of follicular colloid contents and diameters was additionally demonstrated with the decrease of hepatocyte numbers per unit area due to hypertrophy of hepatocytes related to lipid droplet depositions, increase of a/oligospermatic epididymal tubules with epididymal atrophic changes, seminiferous tubular atrophy with decrease of stage I~II seminiferous tubules in testis, prostate tubular atrophic changes at histopathological inspections. However, these PTU induced hypothyroidism and related hepatic and male reproductive organ damages were favorably and dose-dependently inhibited by treatment of JEKHT 500, 250 and 125 mg/kg, and JEKHT also effectively regulated the PTU-induced abnormal antioxidant defense factor changes in the both liver and testis. Conclusions: JEKHT 500, 250 and 125 mg/kg dose-dependently inhibited PTU-induced hypothyroidism and related liver and male reproductive organ damages in rats.

Institutional Experience of Interstitial Brachytherapy for Head and Neck Cancer with a Comparison of High- and Low Dose Rate Practice

  • Mohanti, Bidhu Kalyan;Sahai, Puja;Thakar, Alok;Sikka, Kapil;Bhasker, Suman;Sharma, Atul;Sharma, Seema;Bahadur, Sudhir
    • Asian Pacific Journal of Cancer Prevention
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    • 제15권2호
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    • pp.813-818
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    • 2014
  • Aims: To describe our institutional experience with high dose rate (HDR) interstitial brachytherapy (IBT) compared with previously reported results on the low dose rate (LDR) practice for head and neck cancer. Materials and Methods: Eighty-four patients with oral cavity (n=70) or oropharyngeal cancer (n=14) were treated with 192Ir HDR-IBT. Seventy-eight patients had stage I or II tumour. The patients treated with IBT alone (n=42) received 39-42 Gy/10-14 fractions (median=40 Gy/10 fractions). With respect to the combination therapy group (n=42), prescription dose comprised of 12-18 Gy/3-6 fractions (median=15 Gy/5 fractions) for IBT and 40-50 Gy/20-25 fractions (median=50 Gy/25 fractions) for external radiotherapy. Brachytherapy was given as 2 fractions per day 6 hours apart with 4 Gy per fraction for monotherapy and 3 Gy per fraction for combination therapy. Results: Four patients were not evaluable in the analysis of outcome. The primary site relapse rates were 23.8% (10/42) and 68.4% (26/38) in patients treated with IBT alone and combination therapy, respectively (p<0.001). Salvage surgery was performed in 19 patients. The 5-year local control rate was estimated at 62% and the disease-free survival (DFS) rate at 52% for all patients. Local control with respect to T1 and T2 tumours was 84% and 42%, respectively. Conclusions: Our present series on HDR-IBT and the previous report on LDR-IBT for head and neck cancer demonstrated similar DFS rates at 5 years (52%). The rate of regional failure in node-negative patients was <20% in both of our series. HDR-IBT offers similar results to LDR-IBT for head and neck cancer.

Study on Genetic Evaluation for Linear Type Traits in Holstein Cows

  • Lee, Deukhwan;Oh, Sang;Whitley, Niki C.
    • Asian-Australasian Journal of Animal Sciences
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    • 제23권1호
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    • pp.1-6
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    • 2010
  • The objectives of this study were to i) investigate genetic performance for linear type traits of individual Holstein dairy cows, especially focusing on comparative traits, and to estimate genetic variances for these traits using actual data, and ii) compare genetic performance and improvement of progeny by birth country of the cows. Linear type traits defined with five comparative traits on this study were general stature composite (GSC), dairy capacity composite (DCC), body size composite (BSC), foot and leg composite (FLC), and udder composite (UDC). These traits were scored from 1 to 6 with 1 = poor, 2 = fair, 3 = good, 4 = good plus, 5 = very good and 6 = excellent. Final scores (FS) were also included in this study. Data used was collected from the years 2000 to 2004 by the Korea Animal Improvement Association (KAIA). Only data of more than five tested cows by herd appraisal date and by sires having more than ten daughters were included to increase the reliability of the data analyses. A total of 30,204 records of the selected traits, which was collected from 26,701 individuals having pedigree information were used. Herd appraisal date, year of age, lactation stage (grouped by month), and time lagged for milking (in hours) were assumed as fixed effects on the model. Animal additive genetic effects considering pedigree relationship and residual errors were assumed with random effects. Year of age at appraisal date was classified from one to nine years of age, assigning the value of nine years of age for animals that were greater than or equal to nine years of age. From our results, the estimate for heritability was 0.463, 0.346, 0.473, 0.290, and 0.430 on GSC, DCC, BSC, FLC and UDC, respectively. The estimate for FS heritability was 0.539. The greatest breeding values for GSC were estimated for Canada, with the breeding values for American lines increasing for 10 years starting in 1989 but tending to decrease after that until 2004. For DCC, the breeding values for American and Canadian lines showed similar patterns until 1999, after which the breeding values for the American lines declined sharply. For BSC, data from Korea, Canada and the USA followed similar trends overall except when the breeding values of the American lines decreased starting in 1999. Overall, the methods used to evaluate genetic performance in this study were acceptable and allowed for the discovery of differences by country of genetic origin, likely due in part to the American use of selection indexes based primarily on milk yield traits until methods for evaluating other traits began to emerge.

Radiation Therapy for Primary Eyelid Cancers in Tunisia

  • Belaid, A;Nasr, C;Benna, M;Cherif, A;Jmour, O;Bouguila, H;Benna, F
    • Asian Pacific Journal of Cancer Prevention
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    • 제17권7호
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    • pp.3643-3646
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    • 2016
  • Management of eyelid cancers is based on surgery and/or radiotherapy (RT). The treatment objective is to control tumors with acceptable functional and esthetic outcomes. The aim of this study was to evaluate the results of radiation therapy in management of epithelial eyelid cancers, reviewing retrospectively the clinical records of patients treated in our institution from January 1989 to December 2013. We focused on clinical and histological features, treatment characteristics, tolerance and disease control. One hundred and eight patients (62 men and 46 women) were enrolled, with a mean age of 61 years [ranges 15-87]. The most frequent tumor location was the inner canthus (42.6%). Median tumor size was 21 mm [ranges 4-70]. Histological type was basal cell carcinoma in 88 cases (81.5%), squamous cell carcinoma in 16 (14.8%) and sebaceous carcinoma in 4 (3.7%). Radiation therapy was exclusive in 67 cases (62%) and post-operative for positive or close margins in the remaining cases. Kilovoltage external beam radiotherapy (KVRT) was used in 63 patients (58.3%) and low-dose-rate interstitial brachytherapy in 37 (34.3%). Eight (7.4%) were treated with cobalt or with a combination of KVRT-cobalt, KVRT-electron beams, KVRT-brachytherapy or cobalt-electron beams. The total delivered radiation doses were 70 Gy (2 Gy/fraction) in 62 patients (57.4%), 66 Gy (2 Gy/fraction) in 37 (34.3%) and 61.2 Gy (3.4Gy/fraction) in 9 (8.3%). After a median follow-up of 64 months, we noted 10 cases of local recurrences(9.2%): 7 after exclusive and 3 after post-operative RT. No local recurrence occurred in patients treated with brachytherapy. Actuarial 5-year local recurrence-free rate, disease-free survival and overall survival were respectively 90%, 90% and 97%. T-stage was found to be a significant factor for recurrence (p=0.047). All acute radiation-related reactions were scored grade I or II. Delayed effects were eye watering in 24 cases (22.2%), eye dryness in 19 (17.6%), unilateral cataract in 7 (6.4%) and ectropion in 4 (3.7%). Radiation therapy and especially brachytherapy is an efficient treatment of eyelid cancers, allowing eye conservation and functional preservation with good local control rates and acceptable toxicity.

제지폐수중의 다이옥신 배출 패턴 및 형성 메카니즘(II) - 표백공정이외의 폐수(알칼리폐수)를 중심으로 - (Emission Patterns and Formation Mechanism of PCDDs/PCDFs in Bleaching Wastewater(I) - Alkali Wastewater -)

  • 신선경;장성기
    • 분석과학
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    • 제14권5호
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    • pp.422-431
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    • 2001
  • 염소표백공정을 포함하고 있는 펄프 제지폐수 배출시설의 폐수 중 다이옥신류의 배출특성을 파악하기 위해 표백공정 전 후단을 제외한 회수공정, 마감공정집수조 및 방류수의 알칼리 폐수를 채취 분석하였다. 회수공정과 마감공정에서 2,3,7,8-치환이성체의 배출분포는 2,3,7,8-사염화퓨란(TCDF) > 팔염화다이옥신(OCDD) > 팔염화퓨란(OCDF)의 순으로 배출되고 있으며, 퓨란류(PCDFs)와 다이옥신류(PCDDs)의 배출비는 76:24, 62:38로 조사되어 주로 퓨란류가 배출되고 있음을 알 수 잇었다. 그러나, 집수조에서는 팔염화다이옥신(OCDD) > 1,2,3,7,8-오염화다이옥신(PeCDD) > 1,2,3,4,7,8-육염화다이옥신(HxCDD)의 순으로 2,3,7,8-치환이성체가 배출되고 있으며, 독성등가환산농도로 환산한 결과 1,2,3,7,8-오염화다이옥신(PeCDD)이 81%, 1,2,3,4,7,8-육염화다이옥신(HxCDD)이 12%를 차지하는 것으로 나타났으며, 검출된 다이옥신류의 농도는 0.2266ng-TEQ/L로 조사되었다. 또한, 방류수에서의 2,3,7,8-치환이성체 배출분포는 팔염화다이옥신(OCDD) 및 2,3,7,8-사염화퓨란류(TCDF)의 순으로 배출되고 있으며, 독성등가환산농도의 배출분포는 1,2,3,7,8-오염화다이옥신(PeCDD) 및 2,3,7,8-사염화퓨란(TCDF)의 순으로 배출되었으며, 배출되는 다이옥신류의 농도는 0.377 ng-TEQ/L로 조사되었다.

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The Pattern of Natural Regeneration by Canopy Gap Size in the Mixed Broadleaved-Korean Pine Forest of Xiaoxing'an Mountains, China

  • Jin, Guangze;Tian, Yueying;Zhao, Fengxia;Kim, Ji Hong
    • 한국산림과학회지
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    • 제96권2호
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    • pp.227-234
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    • 2007
  • The forest canopy gap has been well known as a substantial process of forest cyclic regeneration and important role in stand structure, dynamics, and biodiversity of the forest ecosystem. Based on 3,600 $5m{\times}5m$ square grids in a 9ha permanent experimental plot, the study was conducted to evaluate the regeneration pattern of woody species by developmental stage {seedlings (<1 m of height), saplingI (>1 m of height, <2 cm of DBH), and saplingII (2 cm$<200m^2$), $201-400m^2$, $400-600m^2$, $601-800m^2$, and $>800m^2$) in the mixed broadleaved-Korean pine forest. The results indicated that the regenerating trees of Populus ussuriensis occurred only in the canopy gap area, considered to be a typical gap-dependent species. The regeneration of Ulmus japonica, Ulmus laciniata, and Maackia amurensis could be generally satisfied with the gap size of $201-600m^2$, Betula costata and Prunus padus with gap size of $401-800m^2$, Picea koraiensis with gap size of $201-800m^2$, Fraxinus mandshurica and Syringa reticulata var. mandshurica with smaller than $800m^2$, respectively. Acer ukurunduense and Acer tegmentosum were likely to have no problem with the gap size to make gap regeneration. Acer mono and Tilia amurensis looked more capable of regenerating in the closed canopy disregarding the upper crown condition. The regeneration of Pinus koraiensis and Abies nephrolepis had no trouble under the canopy condition in less than $800m^2$of gap size. The density of regenerating shrubs was rather high, especially under the closed canopy, considered to be associated with great amount of regeneration production in such shade tolerant species as Lonicera maackii, Corylus mandshurica, Euonymus pauciflorus, and Philadelphus schrenkii under the closed canopy. Pearson correlation coefficient was computed to compare the similarity among non-gap area and five gap size classes by developmental stages for trees and shrubs. The similarity coefficients among closed canopy and the gap size classes were mostly significantly correlated to each other with a few exceptions.