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기체 방사성 물질 제거를 위한 첨착 활성탄 필터 시스템 성능에 관한 연구
김대욱,손현철,이명석,이석범,박길문 朝鮮大學校 機械技術硏究所 1999 機械技術硏究 Vol.2 No.1
This paper presents an application of impregnated activated carbon and impregnated activated carbon filters. They are used for the removal of gaseous radioactive materials at radioactive material handling facilities such as nuclear power plants and research facilities. High adsorption efficiencies as well as stability are required for them to remove hazardous radioactive gases such as activated free iodine released during normal operation or accident condition. This research was initiated to enhance the independence of nuclear industry and raise the level of nuclear technology to that of the leading nuclear nations. By attaining the capability of design and development of HVAC system, national technological competitiveness can be achieved. Also, the ground for technology export will be hardened. Therefore, it is well timed to initiate the project to develope those filter systems domestically utilizing all the relevant technologies available.
손범석 ( Bum Suk Son ),석수진 ( Su Jin Seok ),정승규 ( Seung Kyu Chung ),이준성 ( Joon Seong Lee ),이문성 ( Moon Sung Lee ),심찬섭 ( Chan Sup Shim ),허경열 ( Kyung Yul Hur ),진소영 ( So Young Jin ) 대한소화기학회 2009 대한소화기학회지 Vol.54 No.4
A liposarcoma is the most common soft tissue sarcoma in adults with an incidence of about 20% of all soft tissue sarcomas. Although incidence differs from a region of origination, a case arisen from mesentery has rarely been reported. We experienced a case of liposarcoma arising from the mesentery of a 51-year-old male patient. He was treated by wide excision. Histologically, the tumor was composed of a mixed well-differentiated liposarcoma with myxoid and spindle cell type. (Korean J Gastroenterol 2009;54:243-247)
Son Young-Bum,Jeong Yeon Ik,Jeong Yeon Woo,Hossein Mohammad Shamim,Hwang Woo Suk 아세아·태평양축산학회 2022 Animal Bioscience Vol.35 No.9
Objective: The present study analyzed the influence of co-transferring embryos with high and low cloning efficiencies produced via somatic cell nuclear transfer (SCNT) on pregnancy outcomes in dogs. Methods: Cloned dogs were produced by SCNT using donor cells derived from a Tibetan Mastiff (TM) and Toy Poodle (TP). The in vivo developmental capacity of cloned embryos was evaluated. The pregnancy and parturition rates were determined following single transfer of 284 fused oocytes into 21 surrogates and co-transfer of 47 fused oocytes into four surrogates. Results: When cloned embryos produced using a single type of donor cell were transferred into surrogates, the pregnancy and live birth rates were significantly higher following transfer of embryos produced using TP donor cells than following transfer of embryos produced using TM donor cells. Next, pregnancy and live birth rates were compared following single and co-transfer of these cloned embryos. The pregnancy and live birth rates were similar upon co-transfer of embryos and single transfer of embryos produced using TP donor cells but were significantly lower upon single transfer of embryos produced using TM donor cells. Furthermore, the parturition rate for TM dogs and the percentage of these dogs that remained alive until weaning was significantly higher upon co-transfer than upon single transfer of embryos. However, there was no difference between the two embryo transfer methods for TP dogs. The mean birth weight of cloned TM dogs was significantly higher upon single transfer than upon co-transfer of embryos. However, the body weight of TM dogs did not significantly differ between the two embryo transfer methods after day 5. Conclusion: For cloned embryos with a lower developmental competence, the parturition rate and percentage of dogs that remain alive until weaning are increased when they are co-transferred with cloned embryos with a greater developmental competence. Objective: The present study analyzed the influence of co-transferring embryos with high and low cloning efficiencies produced via somatic cell nuclear transfer (SCNT) on pregnancy outcomes in dogs.Methods: Cloned dogs were produced by SCNT using donor cells derived from a Tibetan Mastiff (TM) and Toy Poodle (TP). The in vivo developmental capacity of cloned embryos was evaluated. The pregnancy and parturition rates were determined following single transfer of 284 fused oocytes into 21 surrogates and co-transfer of 47 fused oocytes into four surrogates.Results: When cloned embryos produced using a single type of donor cell were transferred into surrogates, the pregnancy and live birth rates were significantly higher following transfer of embryos produced using TP donor cells than following transfer of embryos produced using TM donor cells. Next, pregnancy and live birth rates were compared following single and co-transfer of these cloned embryos. The pregnancy and live birth rates were similar upon co-transfer of embryos and single transfer of embryos produced using TP donor cells but were significantly lower upon single transfer of embryos produced using TM donor cells. Furthermore, the parturition rate for TM dogs and the percentage of these dogs that remained alive until weaning was significantly higher upon co-transfer than upon single transfer of embryos. However, there was no difference between the two embryo transfer methods for TP dogs. The mean birth weight of cloned TM dogs was significantly higher upon single transfer than upon co-transfer of embryos. However, the body weight of TM dogs did not significantly differ between the two embryo transfer methods after day 5.Conclusion: For cloned embryos with a lower developmental competence, the parturition rate and percentage of dogs that remain alive until weaning are increased when they are co-transferred with cloned embryos with a greater developmental competence.
Current prevalence of Batrachochytrium dendrobatidis in imported and native frogs in South Korea
Suk Kim,Lauren Togonon Arayan,Tran Xuan Ngoc Huy,Alisha Wehdnesday Bernardo Reyes,Huynh Tan Hop,Byoung Youl Cho,Jae Bum Cho,Jin Ha Yu,Son Il Pak 한국예방수의학회(구 한국수의공중보건학회) 2017 예방수의학회지 Vol.42 No.1
In Korea, a serious amphibian disease caused by the fungus Batrachochytrium dendrobatidis (Bd) has been reported from historical samples collected in the 1900s. In this study, we continue to evaluate the current prevalence of chytridiomycosis in the Korean Peninsula and we include imported frogs from America to our analysis. Non-invasive skin swabs were taken from 275 apparently healthy frogs, and Bd was detected in five free living frogs by the nested PCR protocol consisting of two species: Bombina orientalis and Rana catesbeiana, from Gyeongnam and Cheonbuk provinces. These frogs comprised about 2% of the total number of free living samples. This study might be useful for understanding amphibian chytridiomycosis in Korea.
Young-Bum Son,Mohammad Shamim Hossein,Yeon Ik Jeong,Mina Kang,Huijeong Kim,Yura Bae,Kung Ik Hwang,Alex Tinson,Singh Rajesh,Al Shamsi Noura,Woo Suk Hwang The Korean Society of Animal Reproduction and Biot 2024 한국동물생명공학회지 Vol.39 No.1
Background: Somatic cell nuclear transfer (SCNT) is a prominent technology that can preserve superior genetic traits of animals and expand the population in a short time. Hematological characters and endocrine profiles are important elements that demonstrate the stability of the physiological state of cloned animals. To date, several studies regarding cloned camels with superior genes have been conducted. However, detailed hemato-physiological assessments to prove that cloned camels are physiologically normal are limited. In this study, We evaluated the hemato-physiological characteristics of cloned male and female dromedary camels (Camelus dromedaries). Methods: Therefore, we analyzed variations in hematological characteristics and endocrine profiles between cloned and non-cloned age-matched male and female dromedary camels (Camelus dromedaries). Two groups each of male and female cloned and non-cloned camels were monitored to investigate the differences in hemato-physiological characteristics. Results: All the animals were evaluated by performing complete blood count (CBC), serum chemistry, and endocrinological tests. We found no significant difference between the cloned and non-cloned camels. Furthermore, the blood chemistry and endocrine profiles in male and female camels before maturity were similar. Conclusions: These results suggest that cloned and non-cloned camels have similar hematological characteristics and endocrine parameters.
王仁淑,孫旼貞,朴鐘範 慶星大學校 1993 論文集 Vol.14 No.4
In order to investigate the relationship between morphology of adhesion and exfoliation and exfoliation strength with repeated wet cleaning and dry cleaning samples were pressed, and then wet-cleaned and dry-cleaned. The following results were obtained. 1. Irrespective of the associated sample, the exfoliation strength declined with wet cleaning and dry cleaning cycles. This tendency arises much more in the case of dry cleaning than in that of wet cleaning. In the case of the first wet cleaning and ironing, however, exfoliation strength was greater rather than that of initial because of ideal adhesion. 2. The exfoliation morphology associted with inside-belt B₁and B₂exhibited pattern(B) which was breaking of interface of resin and face cloth and resin break.. In the case of samples combined with inside-belt B₃and B₄,it appeared to be a different exfoliation pattern according to nature of face cloth. Hence samples combined with face cloth F₁and F₂exhibited pattern(A) which was a breaking of interface of resin and face cloth. Especially in the case of samples combined with face cloth F₃,pattern(B) as well as pattern(D) which were a mixed type of pattern(B) and breaking of inside-belt bundle appeared.
In Suk Min,Chang Hun Lee,Ik Sang Shin,Na Eun Lee,Hong Seon Son,Seung Bum Kim,서승영,Seong Hun Kim,Sang Wook Kim,Seung Ok Lee,Soo Teik Lee,In Hee Kim 거트앤리버 소화기연관학회협의회 2019 Gut and Liver Vol.13 No.1
Background/Aims: To investigate the treatment efficacy and renal safety of long-term tenofovir disoproxil fumarate (TDF) therapy in chronic hepatitis B (CHB) patients with preserved renal function. Methods: The medical records of 919 CHB patients who were treated with TDF therapy were reviewed. All patients had preserved renal function with an estimated glomerular filtration rate (eGFR) of at least 60 mL/min/1.73 m2. Results: A total of 426 patients (184 treatment-naïve and 242 treatment-experienced) were included for analysis. A virologic response (VR) was defined as achieving an undetectable serum hepatitis B virus (HBV) DNA level, and the overall VR was 74.9%, 86.7%, and 89.4% at the 1, 2, and 3-year follow-ups, respectively. Achieving a VR was not influenced by previous treatment experience, TDF combination therapy, or antiviral resistance. In a multivariate analysis, being hepatitis B e antigen positive at baseline and having a serum HBV DNA level ≥2,000 IU/mL at 12 months were associated with lower VR rates during the long-term TDF therapy. The overall renal impairment was 2.9%, 1.8%, and 1.7% at the 1, 2, and 3-year follow-ups, respectively. With regard to renal safety, underlying diabetes mellitus (DM) and an initial eGFR of 60 to 89 mL/min/1.73 m2 were significant independent predictors of renal impairment. Conclusions: TDF therapy appears to be an effective treatment option for CHB patients with a preserved GFR. However, patients with underlying DM and initial mild renal dysfunction (eGFR, 60 to 89 mL/min/1.73 m2) have an increased risk of renal impairment.
Jeongsuk Son,Sunhui Choi,Jin Won Huh,Chae-Man Lim,Younsuck Koh,Kang Mo Kim,Ju Hyun Shim,Young-Suk Lim,Sang-Bum Hong 대한내과학회 2020 The Korean Journal of Internal Medicine Vol.35 No.4
Background/Aims: The quick Sepsis-related Organ Failure Assessment (qSOFA) is a newly developed risk stratification tool, which has been presented along with a new sepsis definition, to classify infected patients outside of the intensive care unit (ICU). We evaluated the clinical usefulness of qSOFA for predicting adverse outcomes in sepsis patients with liver cirrhosis. Methods: We performed a retrospective cohort study to assess the utility of qSOFA in sepsis patients with liver cirrhosis for whom medical emergency teams (METs) were activated in general wards at an academic tertiary care hospital between March 2008 and December 2015. qSOFA, Systemic inflammatory response syndrome (SIRS), modified early warning score (MEWS), and sequential (sepsis- related) organ failure assessment (SOFA) scores were calculated according to data at MET activation. Results: Of 188 patients, 69 (36.7%) had a qSOFA score of 0 or 1 point and 119 (63.3%) had ≥ 2 points. The areas under the receiver operating characteristic curve (AUROC) for ICU transfer on the SOFA (AUROC, 0.691; 95% confidence interval [CI], 0.615 to 0.767) or MEWS (AUROC, 0.663; 95% CI, 0.586 to 0.739) were significantly higher compared to those for qSOFA (AUROC, 0.589; 95% CI, 0.507 to 0.671) or SIRS (AUROC, 0.533; 95% CI, 0.451 to 0.616). Conclusions: Our findings suggest that qSOFA score may have limited utility in predicting adverse outcomes in sepsis patients with liver cirrhosis at MET activation. Either MEWS or another screening tool is needed for detecting early sepsis in these patients.