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Hwang, Hye Jeon,Kim, Kyoung Won,Jeong, Woo Kyoung,Song, Gi-Won,Ko, Gi-Young,Sung, Kyu Bo,Shin, Yong Moon,Kim, Pyo Nyun,Ha, Tae-Yong,Moon, Deok-Bog,Kim, Ki-Hun,Ahn, Chul-Soo,Hwang, Shin,Lee, Sung-Gyu Radiological Society of North America 2009 Radiology Vol.253 No.2
<P>PURPOSE: To establish optimal Doppler ultrasonographic (US) venous pulsatility index and computed tomographic (CT) criteria for right hepatic vein (RHV) stenosis after living donor liver transplantation (LDLT) and to compare accuracies of these methods by using receiver operating characteristic (ROC) analysis. MATERIALS AND METHODS: This retrospective study was approved by an institutional review board; informed consent was waived. Eighty patients (48 men, 32 women; mean age, 51.5 years +/- 9.2 [standard deviation]) underwent Doppler US and CT within 8 days of hepatic venography following right lobe LDLT between October 2006 and September 2008. At venography, RHVs were classified into a stenosis or nonstenosis group. At Doppler US, venous pulsatility index was defined as the difference between maximum and minimum frequency shifts divided by maximum frequency shift. At CT, diameters of anastomosis and RHV were measured; percentage of stenosis was calculated. Mean Doppler US and CT parameters in the two groups were compared; ROC analysis was performed. RESULTS: There were 30 stenotic and 50 nonstenotic RHVs. Mean venous pulsatility index and mean anastomosis diameter were significantly lower and mean percentage of stenosis was significantly higher in the stenosis than the nonstenosis group (P < .001 each). Optimal cutoffs for venous pulsatility index, anastomosis diameter, and percentage of stenosis were 0.16, 3.7 mm, and 47%, respectively. Sensitivity and specificity were 86.7% and 68.0% for venous pulsatility index, 96.7% and 88.0% for anastomosis diameter, and 96.7% and 86.0% for percentage of stenosis, respectively. At ROC analysis, anastomosis diameter (P = .002) and percentage of stenosis (P = .003) were significantly more accurate than venous pulsatility index. CONCLUSION: CT is more accurate than Doppler US for RHV stenosis after LDLT, with venous pulsatility index as the sole sonographic criterion. Patients suspected of having RHV stenosis at Doppler US may benefit from CT to reduce unnecessary venography.</P>
Bo Kyoung Choi,Soo Hyun Yang,Kang Hum Suh,Jin Ah Hwang,Moon Hyung Lee,Won keun Si,Ji Ho Kim 전남대학교 의과학연구소 2011 전남의대학술지 Vol.47 No.3
Portal vein thrombosis (PVT) is a rare form of venous thrombosis that affects the hepatic portal vein flow, which can lead to portal hypertension. Treatment of PVT includes anticoagulants,thrombolysis, insertion of shunts, bypass surgery, and liver transplantation. Single anticoagulation therapy is not regarded as a curative treatment but can be associated with a reduction in new thrombotic episodes. We experienced a case of acute total occlusion of PVT provoked by protein C and S deficiency syndrome. PVT was completely recanalized with oral anticoagulant therapy following low molecular weight heparin therapy.
Hwang, Kyoung-Sub,Lee, Jin-Ju,Jeon, Young-Chan,Shin, Sang-Hun,Song, Jae-Min,Lee, So-Hyoun,Huh, Jung-Bo Korean Academy of Dental Science 2017 Journal of korean dental science Vol.10 No.1
In case of loss of many teeth due to dental caries or periodontal disease, improvement of masticatory function and aesthetics can be obtained through implant treatment. However, if the patient does not have a normal intercondylar relationship, it is difficult to achieve an ideal occlusal relationship with only prosthetic treatment. In particular, oral reconstruction with orthodontic treatment or orthognathic surgery is necessary for patients with mandibular prognathism. However, if the posterior occlusion collapses due to severe caries or periodontal disease, orthognathic surgery may be difficult. The occlusal vertical stop is very important for the stability of the mandibular position during occlusal reconstruction through orthognathic surgery. The patient in this case had posterior occlusion collapsed due to the caries of a large number of posterior teeth, and showed mandibular prognathism and long face. We planned a full arch restoration with orthognathic surgery and extracted the hopeless teeth. To secure the vertical stop required for orthognathic surgery, the implant was placed before surgery. After the orthognathic surgery and the final prosthesis application, the results were satisfactory for the improvement of the aesthetics and the restoration of the masticatory function.
Sex Ratio Determination by Quantitative Real Time PCR using Amelogenin Gene in Porcine Sperm
Hwang, You-Jin,Bae, Mun-Sook,Yang, Jae-Hun,Kim, Bo-Kyoung,Kim, Sang-Ok,Lee, Eun-Soo,Choi, Sun-Gyu,Kwon, Ye-Ri,Seo, Min-Hae,Park, Choon-Keun 韓國受精卵移植學會 2009 한국동물생명공학회지 Vol.24 No.3
Sex-sorting of sperm is an assisted reproductive technology (ART) used by the livestock industry for the mass production of animals of a desired sex. The standard method for sorting sperm is the detection of DNA content differences between X and Y chromosome-bearing sperm by flow cytometry. However, this method has variable efficiency and therefore requires verification by a second method. We have developed a sex determination method based on quantitative real-time polymerase chain reaction (qPCR) of the porcine amelogenin (AMEL) gene. The AMEL gene is present on both the X and the Y chromosome, but the length and sequence of its noncoding regions differ between the X and Y chromosomes. By measuring the threshold cycle (Ct) of qPCR, we were able to calculate the relative frequency of X chromosome. Two sets of AMEL primers were used in these studies. One set (AME) targeted AMEL gene sequences present in both X and Y chromosome, but produced PCR products of different lengths for each chromosome. The other set (AXR) bound to AMEL gene sequences present on the X chromosome but absent esholthe Y-chromosome. Relative product levels were calculated by normalizing the AXR fluorescence to the AME fluorescence. The AMEL method accurately predicted the sex ratios of boar sperm, demonstrating that it has potential value as a sex determination method.
( Bo Hye Kim ),( Hee Kyung Kim ),( Hye Jeong Cho ),( So Dam Hong ),( Jae Kyoung Shin ),( Hee Jin Hong ),( Sae Ahm Kim ),( Hak Su Kim ),( Suk Pyo Shin ),( Ha Na Park ),( Seong Gyu Hwang ),( Kyu Sung Ri 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1
Background: Pyogenic liver abscess is the most common type of visceral abscess with a mortality rate of 10% to 25%. The mortality of liver abscess markedly decreased due to the improvement of diagnostic methods, antibiotics and other treatment modalities. We describe the clinical feature, changing trends of etiology and poor prognostic factors of pyogenic liver abscess during the recent 2 decades. Methods: We retrospectively reviewed the medical records of patients with pyogenic liver abscess who were treated in CHA Bundang Medical Center between 1996 and 2014. The period was divided into period 1 (1996-2004) and period 2 (2005-2014). We compare these two groups in age, etiology, etc. Results: 148 patients were indentifi ed. 60 patients were included period 1 and 86 patients were included period 2. There were no signifi cant interval changes in symptom, sign, number and size of abscess and laboratory fi nding between the two periods. The average age increased in period 2 (aged 62. 7) relative to period 1 (aged 57. 2) (P=0. 001). Klebsiella pneumoniae was the most common pathogen both two periods. The most common infection route was biliary tract (45. 5%) in period 1 and cyptogenic cause (53. 8%) in period 2 (P=0. 042). Interestingly, the percentage of hepatobiliary malignacy in etiology increased from 4. 5% in Period 1 to 10. 2% in period 2. (P= 0. 03) Liver abscess originated from hepatobiliary problem showed a higher recurrent rate (P=0. 018). Conclusions:The average age of patients with pyogenic liver abscess has increased substantially and the predominant pathogen originates from the biliary tract because biliary procedures has increased. Hepatobiliary malignancy is the major risk factor and poor prognostic factor for pyogenic liver abscess. Therefore early diagnosis and close observation is important for patients with biliary problem or hepatobiliary malignancy.
유경원(Kyoung-won You),황보은(Bo-Eun Hwang),엄상준(Sang-Jun Uhm),박춘성(Choon-Sung Park),허영태(Young-Tae Heo) 한국영재교육학회 2021 영재와 영재교육 Vol.20 No.2
이 연구에서는 영재들의 심리적인 문제점을 해소할 수 있는 방안의 하나로 반려견을 활용하여 인간의 성격과 반려견종을 매칭 할 수 있는 방법을 고안하고자 하였다. NEO 성격검사의 5가지 요소들을 반려견 양육과 특성에 맞추어 적용하였으며, 각각의 요소별로 반려견의 품종을 분류하여 반려견 양육 희망자의 성격에 부합하는 반려견품종 매칭 가이드라인을 작성하였다. 반려견 양육 희망자의 성격과 부합되는 반려견 품종의 매칭을 위해 인간의 성격 요인을 분석하는 기존의 방법들을 검토하였으며, 반려견 양육요소에 적용이 가장 적절한 5요인(신경증, 외향성, 개방성, 친화성, 성실성) 성격검사를 반려견 양육에 부합되도록 적용하였다. (사)한국애견협회의 등록 견종 상위 50위를 선별하여 각 견종의 고유 성격과 양육 특징을 인간의 5가지 성격 요소별로 분류하였다. 이러한 연구는 선행되어지지 않은 최초의 시도이기에 신뢰도의 확보를 위해서 지속적인 보완작업과 수렴타당도, 판별타당도 등의 타당화 작업이 수행될 필요가 있으며, 본 연구에서 개발된 결과의 타당성 검증을 위한 후속 연구를 수행하여, 신뢰성과 편리성이 있는 인간 성격에 부합하는 반려견 선택 도구를 제시하고자 한다. In this study, five each elements of the NEO personality test were applied according to the companion dog rearing and characteristics, and guideline to choice breed of companion dog was presented based on the personality of the dog rearing applicant. The literature review presented the issue of abandonment and disruption of companion animal, and investigated policies and systems for suppression of abandonment and disruption rates of companion animals in abroad. Methods of analyzing human personality were reviewed and five factors (Neuroticism, Extraversion, Openness to Experience, Agreeableness, Conscientiousness) were applied for matching prospective adopter and specific dog breed which following their characters. The top 50 registered dogs of the Korea Pet Association were selected and the unique personality and parenting characteristics of each dog were classified based on five characteristic elements of humans. Since these studies are the first attempt not to be preceded, continuous complementary and convergent feasibility and validation work need to be carried out to ensure reliability, and follow-up studies to validate reliable dog breed secection system to character of prospective adoptors.