신손상 진단에 있어 현미경적 혈뇨의 의의

임정환,오봉렬,나국주,김현수,윤한덕,허 탁,조석주,민용일 大韓應急醫學會 1996 대한응급의학회지 Vol.7 No.1

The evaluation of patients with microscopic hematuria after blunt abdominal trauma has become controversial. We tested the hypothesis that renal contusion can be diagnosed clinically and that these patients do not require radiographic evaluation. To evaluate the association of microscopic hematuria without shock and with renal injury, we reviewed the medical records of 252 patients following blunt abdominal trauma. Microscopic hematuria without shock was noted in 58 of 252 patients. Of the 58 patients 52 had renal contusion, 4 had renal laceration, 1 had a renal rupture and 1 had renal pedicle injury. All of the patients with renal contusions experienced no complications from nonoperative management. But, avoiding a radiopraphic evaluation in patients with blunt renal trauma plus microscopic hematuria and no shock would miss a few cases of severe renal injury.

600합금의 미세조직 변화 및 SCC거동에 미치는 Ce 첨가의 영향

권오철,이용선,임연수,정만교,김정수 대한금속재료학회 2005 대한금속·재료학회지 Vol.43 No.1

High purity model alloys with major composition Ni-15Cr-9Fe-0.03C (600CEO) and Ni-15Cr-9Fe-0.03C-0.04Ce (600CE4) were produced. Using these model alloys the effect of alloying element Ce on the SCC behavior of Alloy 600 was evaluated in a caustic solution. To obtain carbides precipitated on grain boundaries, the thermal treatment was performed on both the solution annealed model alloys. Microstructural examinations using SEM and TEM EDX showed that the same structural carbides, Cr_(7)Cc₃, were precipitated on both the alloys and no significant difference in the amount of Cr depletion along grain boundaries was observed between the two model alloys. However, it was shown that the coverage of grain boundary carbides was higher in the Ce-bearing alloy (600CE4). The SCC susceptibility of the alloys was investigated in 40%NaOH solution at 315℃. Being evaluated in terms of the maximum crack depth, the SCC susceptibility of the alloy turned out to be reduced by the addition of Ce. The increased resistance to the SCC in the alloy 600CE4 was considered to be attributable to the increased coverage of grain boundary carbides. (Received September 30, 2004)

식도 평활근종이 동반된 Alport 증후군 1례

정진영,김철민,임연정,김자형,유종우,최보화,홍수종,박영서 대한소아과학회 2002 小兒科 Vol.45 No.9

Comparison of microbial communities in swine manure at various temperatures and storage times

Lim, Joung-Soo,Yang, Seung Hak,Kim, Bong-Soo,Lee, Eun Young Asian Australasian Association of Animal Productio 2018 Animal Bioscience Vol.31 No.8

Objective: This study was designed to investigate the effects of temperature and storage time on the evolution of bacterial communities in swine manure. Methods: Manure was stored at $-20^{\circ}C$, $4^{\circ}C$, $20^{\circ}C$, or $37^{\circ}C$ and sampled at 7-day intervals over 28 days of storage, for a total of 5 time points. To assess the bacterial species present, 16S ribosomal RNA gene sequences were analyzed using pyrosequencing. Results: After normalization, 113,934 sequence reads were obtained, with an average length of $466.6{\pm}4.4bp$. The diversity indices of the communities reduced as temperature and storage time increased, and the slopes of rarefaction curves decreased from the second week in samples stored at $-20^{\circ}C$ and $4^{\circ}C$. These results indicate that the richness of the bacterial community in the manure reduced as temperature and storage time increased. Firmicutes were the dominant phylum in all samples examined, ranging from 89.3% to 98.8% of total reads, followed by Actinobacteria, which accounted for 0.6% to 7.9%. A change in community composition was observed in samples stored at $37^{\circ}C$ during the first 7 days, indicating that temperature plays an important role in determining the microbiota of swine manure. Clostridium, Turicibacter, Streptococcus, and Lactobacillus within Firmicutes, and Corynebacterium within Actinobacteria were the most dominant genera in fresh manure and all stored samples. Conclusion: Based on our findings, we propose Clostridium as an indicator genus of swine manure decomposition in an anaerobic environment. The proportions of dominant genera changed in samples stored at $20^{\circ}C$ and $37^{\circ}C$ during the fourth week. Based on these results, it was concluded that the microbial communities of swine manure change rapidly as storage time and temperature increase.

Removal of Ammonia from Swine Manure by Mixed Microorganisms

( Lim Joung-soo ),( Sung-back Cho ),( Deug-woo Han ),( Sang-ryong Lee ),( Ok-hwa Hwang ),( Jung-hoon Kwag ),( Modabber Ahmed Khan ),( Yang Seung Hak ) 한국폐기물자원순환학회(구 한국폐기물학회) 2015 한국폐기물자원순환학회 3RINCs초록집 Vol.2015 No.-

This study was conducted to investigate the characteristics and concentrations of ammonia produced from the livestock swine manure treated with mixed microorganisms. Odor generating device was made by volume of about 1.12 L for sampling ammonia odor. When swine manure was placed in reactor, average concentration of ammonia was about 310 ppmv out of the range from 295 ppmv to 340 ppmv. Removal efficiencies showed 48% to 73% after 24 hr as compared to initial level before spraying. The persistence of efficiency in two treatments (2 and 5) were 66.7% and 55.9%, respectively that retained for the first seven days. Among the mixed microorganisms, the treatment 2 (mixed microorganisms) showed the best efficiency of 63.3% to 86.7%. To evaluate the effects of 5 kinds of spray mixed microorganisms, the experiments were conducted and based spray treatments without spray mixed microorganisms on swine manure. Swine manure were subjected to a 7-day reactors in which the effects of the spray mixed microorganisms on the ammonia emission were compared. The ammonia gas emission was measured for every day. Ammonia emission from the swine manure with the spray mixed microorganisms was lower than that of the manure in the control treatment (without spray mixed microorganisms). In ammonia removal efficiencies of the experimental groups, some mixed microorganisms showed from 55.9% to 86.7% removal efficiencies throughout the entire period as compared to the control group. On the other hand, initial reduction of ammonia in some treatments (mixed microorganisms) was effective temporarily.

Electrochemical Study on Localized Corrosion of Laser Surface Melted Alloy 600

Lim, Yun Soo,Hur, Do Haeng,Kim, Hong Pyo,Kim, Joung Soo,Kwon, Hyuk Sang 한국부식방식학회 2002 Corrosion Science and Technology Vol.31 No.6

The effects of laser surface melting (LSM) on the resistance to localized corrosion such as intergranular stress corrosion cracking (IGSCC) and pitting of Ni-base Alloy 600 were investigated by electrochemical methods. The degree of sensitization ofthe laser heated Alloy 600 measured using the double loop electrochemical potentiokinetic reactivation method in a 0.1 M Na₂S₄O_6 + 20 ppm KSCN solution was considerably low, which demonstrates that the resistance to IGSCC of Alloy 600 in sulfur bearing environments was improved by LSM. The pitting potentials of Alloy 600 in 1 M NaCl at pH 4 and 9 were also markedly increased by the LSM process, compared with that of the non-laser treated Alloy 600. From the microscopic examination, it was found that pitting was initiated around sulfides associated TiN in the matrix of Alloy 600. Homogeneous microstructure associated with the reduction of inclusion size during LSM could be attributed to the increase of resistance to pitting corrosion in the LSM Alloy 600. On the other hand, complete dissolution of pre-existing intergranular Cr-rich carbides and the resultant Cr healing around grain boundaries was responsible for the improvement of IGSCC properties. The resistance to localized corrosion of the laser treated Alloy 600 was discussed from the results of the electrochemical test and microscopic examination.

Process-based Modelling Using Nutrient Inputs, Animal Inventory, Manure Dynamics, and Ammonia Emissions from Swine Finishing Farm

( Joung Soo Lim ),( Sung-back Cho ),( Deug-woo Han ),( Sang-ryong Lee ),( Ok-hwa Hwang ),( Jung-hoon Kwag ),( Sang Ryong Lee ) 한국폐기물자원순환학회(구 한국폐기물학회) 2016 한국폐기물자원순환학회 춘계학술발표논문집 Vol.2016 No.-

The purpose of National Air Emission Monitoring Study (NAEMS) was to quantify air emissions from livestock (swine and dairy) and poultry production, provide reliable data for developing and validating barn and lagoon emission models, and develop national consensus on methods of measuring, calculating, and reporting emissions (Schutz et al. 2005). The ancillary information forms the basis for future development of nutrient balances, acts to set upper limits on calculated emissions, and supports the development of process-based models. This article is about a summary of ancillary information collected from the representative swine finisher farm selected for study in the NAEMS project (Southeast Region). This ancillary information is then used to understand the flow of nutrients into and out of the swine barn. Attempts to understand the rate and quantity of inputs and outputs provide boundaries that help guide model development and evaluation.

Changes in metabolic syndrome in American and Korean youth, 1997-2008.

Lim, Soo,Jang, Hak Chul,Park, Kyong Soo,Cho, Sung Il,Lee, Man-Gyoon,Joung, Hyojee,Mozumdar, Arupendra,Liguori, Gary American Academy of Pediatrics [etc.] 2013 Pediatrics Vol.131 No.1

<P>Metabolic syndrome (MetSyn) in children and adolescence is increasing worldwide; however, its pattern may be different between Asians and Americans. We compare the prevalence and patterns of MetSyn between American and Korean children and adolescents between roughly 1998 and 2007.</P>

수용성 탄수화물을 이용한 분뇨슬러리 pH 적정화 및 암모니아 휘산의 저감

임정수(Joung Soo Lim,),황옥화(Ok Hwa Hwang),이상룡(Sang Ryong Lee),조성백(Sung Back Cho),곽정훈(Jung Hoon Kwag),이동현(Dong Hyun Lee),정민웅(Min Woong Jung),한덕우(Deug Woo Han) 유기성자원학회 2017 유기물자원화 Vol.25 No.1

우리나라 양돈 농장 내 돈사의 대부분은 고밀도 사육에 적합한 피트형 구조를 가지고 있다. 피트형 돈사는 돼지의 배설물이 바닥의 공간에 장기간 저장되는 구조로서 기존의 돈사에 비해 분뇨 처리를 위한 노동비용이 크게 절감되는 장점이 있다. 그러나 피트에 저장된 분뇨슬러리는 암모니아를 비롯하여 다양한 냄새물질을 지속적으로 배출하여 돼지와 근로자의 건강을 위협하게 된다. 축산업의 역사가 오래된 축산 선진국에서는 이러한 문제를 해결하기 위해 슬러리 첨가제, 스크러버, 바이오필터 등을 개발하였으며 우리나라 역시, 점차 고밀도 사육 방식이 확산됨에 따라 냄새저감 수단에 대한 수요가 빠르게 증가하고 있다. 특히 최근에는 돈사 피트에 직접 투여하는 미생물제의 보급이 빠르게 확대되고 있다. 미생물제는 구매 비용이 높다는 단점에도 불구하고 운반, 저장, 사용이 편리하고 상대적으로 유지비가 저렴하여 소규모 양돈 농가에서 많이 선택되고 있다. 이러한 미생물제와 비교하여 유사한 효과를 발휘하면서도 비용이 훨씬 저렴한 냄새저감 수단으로서 수용성 탄수화물이 있다. 수용성탄수화물이란 설탕, 포도당, 당밀과 같이 분자량이 적은 단당류 또는 이당류 등을 포함하며 분뇨슬러리에 용해된 이후 빠르게 미생물에 의해 이용될 수 있는 탄소화합물을 의미한다. 분뇨 내 미생물은 투여된 수용성 탄수화물을 분해하여 이산화탄소 및 각종 유기산을 생산함으로 슬러리를 산화시키는 효과를 발휘한다. 산화된 슬러리 내에서 비이온성인 암모니아는 이온성인 암모늄 이온으로 전환되어 휘발성을 잃게 된다. 본 연구에서 대표적인 수용성 탄수화물인 설탕을 돈분뇨 슬러리(120kg)에 0.1%(w/w) 투여함으로서 슬러리의 pH를 8.2 수준으로 유지하였고 암모니아의 휘발은 10일 평균 33% 저감하는 효과를 얻었다. 결론적으로 본 연구의 결과를 돈사 현장에서 활용한다면 미생물제에 비해 보다 저렴한 비용으로 피트 슬러리의 암모니아 휘발을 저감할 수 있을 것으로 예상된다. In Concentrated Animal Feeding Operations(CAFOs), emission of ammonia from stored manure contributes negatively on the wellness of livestock. In CAFOs facilities, indoor aerial ammonia concentration oftentime surpasses the critical level potentially harmful to livestock s immune system. Understandably, numerous researches to control aerial ammonia have been conducted in countries where CAFOs were practiced for many decades. Some innovative technologies, such as scrubber, bio-filter, and additives emerged, as a result. Among them, microbial additives became popular in Korea, due to an easiness of use and affordability. However, microbial additives still have some weaknesses. Their price is still high enough to discourage farmers who run a small scale farm and their effectiveness are still questioned by many users and researchers. In the present study, we found soluble carbohydrates, such as sugar, glucose, and molasses, when supplemented to pig slurry manure, can mitigate ammonia emission. To be more specific, pig manure slurry(120kg), stored in container(200L), was supplemented with sugar at 0.1%(w/w) and was, subsequently, monitored for pH and aerial ammonia for next 10 days. From this experiment, it was found that the sugar supplementation was effective in mitigating the aerial ammonia concentration (33% in average) when monitored daily. Also, the pH of manure slurry was maintained at relatively low level(8.2) in sugar-supplemented manure slurry while it was elevated to 8.5 in untreated slurry. Conclusively, the obtained data suggest that soluble carbohydrate can mitigate ammonia emission by acidifying manure slurry. Additionally, it can be suggested that soluble carbohydrates, such as sugar, glucose, and molasses, can be reasonable choices for animal farmers who have been looking for an alternative choice to replace expensive microbial additives.

Effect of the Microstructure of Inconel 600 HTMA on Susceptibility to Stress Corrosion Cracking on the Simulated Nuclear Power Plant Operating Conditions

Kim, Joung Soo,Han, Jung Ho,Kim, Hong Pyo,Lim, Yun Soo,Lee, Deok Hyun,Hwang, Seong Sik,Hur, DoHaeng 한국부식방식학회 2002 Corrosion Science and Technology Vol.31 No.4

It has been known that Inconel 600 material having been used for long time as steam generator tubing is susceptible to various localized corrosion, such as pitting, stress corrosion cracking, fretting, denting, etc., in the nuclear power plant operating conditions. Of the localized corrosion. stress corrosion cracking (SCC), nowadays, is a dominant defect mechanism occurring in steam generator tubing of domestic as well as world wide nuclear plants. The susceptibility of Inconel 600 material to SCC has been reported to be very sensitive to its microstructure. In this study, the susceptibility of archive Inconel600 high temperature mill annealed(HTMA) tubing having been used in steam generators on the operating nuclear power plants in Korea was investigated by changing its microstructure in order to see the degree of the integrity of the tubing. Accordingto the results, the susceptibility ofthematerial to primary andsecondary water SCC(PWSCC and IGSCC) is very sensitive to the microstructure of even the as-received tubing material and also to the microstructure modified using additional heat treatments under a simulated nuclear power plant operating conditions. It was confirmed that the resistance of the lnconel 600 HTMA material to SCC can be improved much by modifying its microstructure using proper heat treatments.