Kang, Seong Soo;Roh, Ahn Sung;Choi, Seung Chul;Kim, Young Sang;Kim, Hyun Ju;Choi, Moon Tae;Ahn, Byoung Gu;Kim, Hee Kwon;Park, Sang Jo;Lee, Young Han;Yang, Sang Ho;Ryu, Jong Soo;Sohn, Yeon Gyu;Kim, Myeong Sook;Kong, Myung Suk;Lee, Chang Hoon;Lee, Deog Bae;Kim, Yoo Hak
Korean Journal of Soil Science and Fertilizer
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v.46
no.6
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pp.641-646
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2013
Chemical properties of agricultural soils in Korea have been investigated at four-year interval in order of paddy, polytunnel, upland, and orchard soils since 1999; polytunnel soils were investigated over the whole country in 2000, 2004, 2008, and 2012. Polytunnel soils were taken from the surface (0-15 cm) and subsurface (15-30 cm) at 2,651, 1,274, 1,374 and 1,374 sites in all provinces of South Korea. One hundred sampling sites located in more than 400 m altitude were additionally investigated in 2008 and 2012. Average of soil chemical properties in 2012 except Jeju province were 6.6 for pH, 3.2 dS $m^{-1}$ for EC, 37 g $kg^{-1}$ for organic matter (OM), 1,049 mg $kg^{-1}$ for available (Avail.) phosphate, 1.58 $cmol_c\;kg^{-1}$ for exchangeable (Exch.) K, 10.6 $cmol_c\;kg^{-1}$ for Exch. Ca, and 3.3 $cmol_c\;kg^{-1}$ for Exch. Mg. Except pH, averages of all chemical properties exceeded the upper limit of optimal range. The median values except pH showed a lower value than the averages. The pH, OM and Exch. Ca had slightly increased from 6.3 to 6.6, from 34 to 37 g $kg^{-1}$, and from 7.7 in 2000 to 10.6 $cmol_c\;kg^{-1}$ in 2012, respectively. The order of sample ratios exceeding the optimal range were Avail. $P_2O_5$ (83%) > Exch. Ca (80%) > Exch. K (70%) > Exch. Mg (65%) > EC (55%) > OM (48%) > pH (29%) in 2012. The order of sample ratios below the optimal range was OM (25%) > Exch. K (25%) > pH (20%), Exch. Mg and Avail. $P_2O_5$ (9%) > Exch. Ca (6%) in 2012. The excessive proportion of pH, Exch. Ca, Exch. Mg and OM slightly increased, while the insufficient proportion of those decreased. Approximately 55% of polytunnel soils exceeding EC 2 dS $m^{-1}$ was evaluated with salt accumulated soils having the risk of growth disorder of crops. Nutrient contents in polytunnel soils in Korea showed high level especially Avail. $P_2O_5$ and Exch. cations. Therefore, recommended fertilization based on soil testing or plant testing is needed for soil nutrient management.
Promoting the organic farming, much of the plant extracts used for controlling pests and fungi have been imported from China, India and Myanmar. But, it is so worrisome that aquatic animals such as muddy loach inhabiting in paddy field and common carps in river exposed to the pests and fungi likely be harmed. This study was conducted in order to evaluate the risks of aquatic animals influenced by the three plant extracts, i.e. Sophora flavescens, Azadirachta indica and Derris elliptica. The toxicities of common carp (Cyprinus Carpio), muddy loach (Misgurnus anguillicaudatus) and PEC (Predicted environmental concentration) exposed to the three plant extracts were estimated by the typical spray volume method. Risks were determined by the toxicity value as 48-hr $LC_{50}$ (Lethal concentration, median) or NOEC (No observed effect concentration) into PEC. 48-hr $LC_{50}$ of Common carp and NOEC by Sophora flavescens extracts was 7.9 and 6.2 mg/L, 26.8 and 21.8 mg/L by Azadirachta indica extracts and 47.0 and < 24.0 mg/L by Derris elliptica extracts, respectively. 48-hr $LC_{50}$ of Muddy loach and NOEC by Sophora flavescens extracts was 16.9 and 10.0 mg/L, 35.6 and 30.0 mg/L by Azadirachta indica extracts, and 73.9 and < 40 mg/L by Derris elliptica extracts, respectively. Therefore, acute toxicities of the three plant extracts for aquatic animals were proved to be very low level. PEC of Sophora flavescens extracts in paddy, drainage and river water was 68.0~3.0, 11.33~0.50 and 3.0~0.0018 mg/L, respectively. TER of Sophora flavescens extracts in the three water was 0.2~5.6, 1.5~33.8 and 2.6~4388.9, respectively. PEC of Azadirachta indica extracts in paddy, drainage and river water was 90.9~1.2, 15.2~0.2 and 4.8~0.00075 mg/L, respectively. TER of Azadirachta indica extracts in the three water was 0.4~29.7, 2.3~178.0 and 4.5~35733.3, respectively. PEC of Derris elliptica extracts in river water was 0.0063 mg/L. TER of Derris elliptica extracts in river water was 5222~15667.
Purpose : To intra-individually compare diagnostic accuracy of high-resolution contrast-enhanced magnetic resonance angiography (CE-MRA) with computed tomography angiography (CTA) and digital subtraction angiography (DSA) for the assessment of supraaortic steno-occlusive disease. Materials and Methods : Twenty-eight patients (20 men, 8 women, 53-79 years of age) underwent supraaortic CE-MRA, CTA and DSA. CE-MRA was performed on two 1.5T MR scanners (voxel dimension: $0.66{\times}0.66{\times}1.1$ or $1.2\;mm^3$), and CTA on 64-slice CT scanners (voxel dimension: $0.42{\times}0.42{\times}0.63\;mm^3$). All the three examinations were completed within 40 days (median 19 days; range 1-40 days). Retrospective evaluation and measurement of diameter of 6 extracranial and 9 intracranial arterial segments was done by 2 experienced radiologists. Results: A total of 420 arterial segments were examined by CE-MRA, CTA and DSA. On DSA, 34 stenoocclusive lesions were noted at extracranial (n= 19) and intracranial (n = 15) vessels. For extracranial stenosis greater than 70%, sensitivity, specificity, positive predictive value (PPV) and negative predictive values (NPV) were 94.7%, 98.7%, 90.0% and 99.3% on CE-MRA, and 94.7%, 99.3%, 94.7% and 99.3% on CTA. For intracranial stenosis greater than 50%, sensitivity; specificity, PPV and NPV were 93.3%, 98.3%, 77.8%and 99.6% on CE-MRA, and 86.7%, 97.9%, 72.2% and 99.1 % on CTA, with DSA as the standard of reference. Conclusion : Supraaortic CE-MRA is as reliable as CTA in depicting the arterial stenosis, and is effective in screening of significant stenosis of both extracranial and intracranial arterial stenosis.
Objective: The purpose of this study was to investigate the acute and subacute toxicity and sarcoma- 180 anti-cancer effects of Herbal acupuncture with Triglii Semen in mice and rats. Method: Balble mice were injected intraperitoneally with Triglii semen Herbal acupuncture for $LD_{50}$ and acute toxicity test. Sprague Dawley rats were injected intraperitoneally with Triglii semen Herbal acupuncture for subacute toxicity test. The Triglii semen Herbal acupuncture was injected on Chung-wan(CV12) of mice with S-180 cancer cell line. Results: 1. In acute toxicity test, the $LD_{50}$ value was $7.49{\times}10^3$ml, 0.30ml/kg.2. The body weights of mice treated with Triglii semen Herbal acupuncture increased during the acute toxicity test. 3. In acute toxicity test of serum biochenrical values of mice, total protein was decreased in treatment groups I, 2 and 3, albunrin was decreased in treatment groups 2 and 3 compared to the control group. GOT was increased in treatment group I and Alk. Phosphatase was increased in treatment groups 1,2 and 3 compared to the normal group(p<0.05). 4.ln subacute toxicity test, severe tissue injury was found in lung and liver. 5. In subacute toxicity test, the body weight was decreased in treatment groups I and 2 compared to the normal group and the weight of liver. lung and kidney were increased in treatment groups 1, 2 and 3 compared to the normal group.(p<0.05) 6. In subacute toxicity test, RBC, HGB and HCT were decreased in treatment groups 1 and 2 compared to the normal group. MCV was increased in treatment group1 compared to the normal group, MCH was increased in treatment groups 1 and 2 compared to the control group in complete blood count test.(p<0.05) 7. In subacute toxicity test, total protein was decreased in treatment groups 1 and 2 compared to the nonnal group, BUN was increased in treatment groups 1 and 2 compared to the nonnal group, creatinine and uric acid were decreased in treatment groups 1 and 2 compared to the normal group, glucose was increased in treatment group 2 compared to the nonnal group, triglycelide was decreased in treatment groups I and 2 compared to the normal group, total cholesterol was increased in treatment groups 1 and 2 compared to the control group. GOT was decreased in treatment group 2 compared to the normal and control group, AIk. Phosphatase was increased in treatment group 1 compared to the normal and control group.(p<0.05) 8. Median survival time was 17days in treatment group 2 for S- 180 cancer cell treated with Triglii semen Herbal acupuncture. 9. Natural killer cell activity was insignificant for S-180 cell treated with Triglii semen Herbal acupuncture.(p<0.05) 10. lnterieukin-2 productivity was decreased for S-180 cell treated with Triglii semen Herbal acupuncture compared to the normal and control group.(p<0.05) Conclusion: According to the results, we can conclude Herbal-acupuncture with Triglii semen caused toxicity, and caused no effects in S-180 cancer cell.
Choi Jeong Hoon;Kim Mi Kyung;Yoo Kee Hwan;Hong Young Sook;Lee Joo Won;Kim Soon Kyum
Childhood Kidney Diseases
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v.4
no.1
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pp.6-10
/
2000
Purpose: To evaluate whether the urinary creatinine concentration is a reliable reference value to standardize urinary solute excretion in a spot urine sample during the first week of life. Methods: Spontaneously voided urine specimens were obtained in 49 healthy full term neonates, and in 33 healthy older children with the median ages of $5.7{\pm}4.3$ years, two urine samples were available with an interval of 2 to 3 days. Urine creatinine concentration was determined by the Jaffe test(CoBAS, Integra, Roche, Swiss). Uurine osmolality was determined by the freezing point depression test(Multi-osmette, Precision, USA). Results: Mean urinary creatinine and osmolality values of the first urine samples were not significantly different with the second urine samples in each group. Mean urinary creatinine and osmolality values in neonates were significantly different from the older children of the each urine sample(P<0.01). In neonates, the mean of the urinary oreatinine/osmolality ratios was higher than that of the older children(P<0.01). The urinary creatinine and the creatinine/osmolality values of the first urine samples were closely correlated with those of the second samples in both two groups(P<0.001). Conclusion: The urinary creatinine concentration during the first day of life is relatively stable, even when corrected for urinary osmolality The urinary creatinine and the urinary creatinine/osmolality ratio, therefore, can be used to standardize the urinary excretion of solutes in the neonate.
Kim, Hee-Jung;Seo, Dong-Man;Yun, Tae-Jin;Park, Jeong-Jun;Park, In-Sook;Kim, Young-Hwue;Ko, Jae-Kon
Journal of Chest Surgery
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v.42
no.3
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pp.305-310
/
2009
Background: The Ross procedure is known as a good surgical option for a young age group with aortic valve problems, but few reports on the Ross procedure are available in the Korean literature. This study is a review of our midterm results of 10 year experience with the pediatric Ross operation in Asan Medical Center. Material and Method: From March 1997 to October 2008, eighteen patients who were aged less than 16 years underwent the Ross procedure. There were 11 males and 7 females. The patients median age was 8.5 years (range: $0.5\sim14.0$). The aortic valve pathophysiology was 6 patients with aortic insufficiency, 4 patients with aortic stenosis, 7 patients with mixed aortic stenoinsufficiencey and 1 patient with infective endocarditis. The valve morphology was bicuspid in 11 and tricuspid in 7. All the patients were operated on with the root replacement technique. All the pumonic valves were replaced with an allograft except for one pericardial monocusp valve. The mean follow up duration was 52.8 months (range: 5.8$\sim$138.2 months). We reviewed the echocardiographic data with focusing on the, auto-graft dysfunction and reoperation. Result: There was no hospital mortality and late mortality. According to the last echocardiographic data, 2 autografts showed aortic regurgitation grade 2, 4 autografts showed aortic regurgitation grade 1 and the others were less than trivial. Reoperation of the pulmonic position conduit was performed 4 times in three patients. The rate of freedom from reoperation at 5 years was 72.2%. On the serial follow up, the Z-values of the aortic annulus/aortic sinus were changed from $1.6{\pm}1.7/0.9{\pm}1.7$ at preoperation to $1.8{\pm}1.6$(p=0.64)/$2.2{\pm}0.9$ (p=0.01) at the last follow-up. There was no significant relation between the growth of the neoaortic root and neoaortic insufficiency. Conclusion: Our midterm results of the Ross procedure in pediatric patients showed good autograft function and growth potential. Vet reoperation due to allograft dysfunction was a major concern.
Park, Ji Hyun;Lee, Na Young;Kim, Gil Hyun;Jung, Jin Hwa;Cho, Kyung Soon;Kim, Sung Mi
Clinical and Experimental Pediatrics
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v.46
no.9
/
pp.858-864
/
2003
Purpose : There was a outbreak of aseptic meningitis in Busan, 2002. We report the clinical features and causative viruses. Methods : Two hundred seventy six children with aseptic meningitis who were admitted to the Department of Pediatrics, Maryknoll Hospital between January and December, 2002 were included. CSF, stool and throat swab viral cultures were done in 244 of these children. Results : The male to female ratio was 1.4 : 1. Age of patients varied from five months to fourteen years old. Average age was $5.7{\pm}6.2years$ old and mostly between one and four years.(41.3%) Monthly distribution revealed that the number of patients increased from May to July. The main symptoms were fever, headache and vomiting in this order. Respiratory tract infection symptom was associated from June to July and headache and nausea without fever were characteristically observed in children more than 10 years old from November to December. In peripheral blood examination, leukocytosis(WBC>$10,000/mm^3$) showed in 34.8%, ESR was increased in 56.1%, and CRP was positive value in 61%. Therefore differential diagnosis was difficult through peripheral blood examination. CSF findings revealed mean leukocyte count $86.5{\pm}180.2/mm^3$, protein $41.7{\pm}32.9mg/dL$, glucose $56.4{\pm}9.9mg/dL$. Median hospitalized period was $4.7{\pm}7.2days$ and compared with non-tapping group, hospitalized period was shorter and subsidance of symptoms was faster, therefore antibiotics injection period was shorter in the spinal tapping group. Virus was isolated in 31 cases of 244. The causative agents were echovirus 6, echovirus 9, echovirus 25, coxsakie virus B3, B4. Conclusion : There was an epidemics of aseptic meningitis in Busan, 2002; the causative agent was echovirus 6, 9, 25, coxsakie virus B3, B4.
Lee, Jae Hee;Lee, So Yeon;Kim, Ja Hyung;Kim, Bong Sung;Hong, Soo-Jong
Clinical and Experimental Pediatrics
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v.46
no.12
/
pp.1230-1234
/
2003
Purpose : The aim of this study is to evaluate the value of lung biopsies for the management of children with lung disease. Methods : We retrospectively reviewed 19 lung biopsies done at Asan Medical Center, Seoul between 1993 and 2001. Data gathered included demographic information, underlying conditions, diagnosis before biopsy, final diagnosis, change in therapy, morbidity and mortality. Results : Nineteen patients underwent lung biopsy. Among them, 13 patients were male and six patients were female; the median age was 3.6 years(0.8 to 8.6 years). Twelve patients underwent open lung biopsies and seven patients had thoracoscopic biopsies. The overall diagnosis rate was 95 %. The most common diagnosis was interstitial lung disease(12 patients, 64%) and infection was detected in four patients(21%). The biopsy-proven bronchiolitis obliterance was confirmed in two of seven patients suspected by CT findings. Specific treatment was changed after biopsy in 16 patients (85%). The morbidity & overall mortality rates of the patients were 5%(one patient) and 21%(four patients) respectively. Only one complication was seen : empyema. The causes of death were acute respiratory distress syndrome(one patient), respiratory failure(two patients), and septicemia(one patient). Conclusion : The lung biopsy is a safe procedure and it contributes to more accurate diagnosis and proper management of pediatric lung diseases. We recommend lung biopsies should be considered more positively in the diagnosis of pediatric lung diseases.
A bacteriological study of sea water and oyster in Charan Bay was conducted to evaluate sanitary conditions of the bay and compliance of waters with the recommended bacteriological criteria for the designated area of shellfish cultivation, The Samples were collected at 23 sampling stations(Fig. 1 and Fig. 2) estaslished once a month from January 1997 to December 1997, During the study period, temperature ranged from 4.7 to $25.6^{\circ}C$, transparency ranged from 3.3 to 6.2m chemical oxygen demand ranged from 1.67 to 2.18 mg/$\ell$, dissolved oxygen demand ranged from 5.4 to 10.0 mg/$\ell$ dissolved nitrogen ranged from 1.65 to 7.88 $\mu$g-at/$\ell$, phosphate ranged from 0.15 to 1.16 $\mu$g-at/$\ell$, Chlorophylla-a ranged from 0.95 to 12.69mg/$\ell$. The coliform group and fecal coliform MPN's of sea water were ranged from <1.8$\~$l,600 and <1.8$\~$540, respectively. The coliform group and fecal coliform MPN's of oysters were ranged from <18$\~$16,000 and <18$\~$1,400, respectively. The viable cell counts in oyster ranged from $1.5\times10^2$ to $7.5\times10^3$. The bacteriological criteria of sea water in shellfish growing area should be less than 70 per 100 ml of sea water for median value of coliform MPN, and below $10\%$ of the samples which contain over than 230 for coliform MPN or over than 43 for fecal coliform MPN. The sea water from 432 samples were complied water coliform criteria recommended for designated shellfish growing area. The coliform group, fecal coliform, classification of coliform group with IMViC reactions and pathogenic vibrios were analyzed. During the study period, infectious bacteria such as Vibrio cholerae, Salmonella sp, and Shigella sp, were not detected from the samples, but detection ratios of Vibrio parahaemolyticus and Vibrio vulnifirus were $7\~17\%$ in summer months.
This experiment was carried out to evaluate the sanitary quality of sea water at popular swimming beaches such as Haeundae, Kwanganri and Songjeong which are located in the suburbs of Busan Korea. One hundred and seventy five sea water samples were collected from the 25 stations during the both summer seasons in 1979 and in 1980. The sampling stations were established in the above 3 swimming beaches and the estuary of Suyeong river (See Fig.1.). To evaluate the sanitary quality, coliform group, fecal coliform, viable cell count and Vibrio parahaemolyticus were observed. The median value of coliform group MPN of the samples ranged 2,300 to 6,500/100m1 in Kwanganri, 670 to 910/100m1 in Haeundae and 430 to 460/100m1 in Songjeong swimming beach. Geometric mean of fecal coliform MPN was 3,200/100m1 in Kwanganri, 500/100m1 in Haeundae and 360/100m1 in Songjeong swimming beach. Composition of coliform was $23\%$ Escheri-chia coli group, $20\%$ Citrobacter freundii group, $41\%$ Klebsiella aerogenes group and $16\%$others. The density of Vibrio parahaemolyticus in Kwanganri was much higher than those of in other beaches by 5 to 6 times. Plate count of the samples in the estuary of Suyeong river was varied from 300 to $8.5\times10^6/ml$ during the study period. No remarkable difference was observed in bacterial density by tide in swimming beaches but the bacterial density of sea water at ebb tide was obviously higher than those of the samples at flood tide in the estuary of Suyeong river.
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