Conventional and inverse magnetocaloric effects, and critical behaviors in Ni₄₃Mn₄₆Sn₈In₃ alloy

Thanh, T.D.,Nan, W.Z.,Nam, G.,Van, H.T.,You, T.S.,Phan, T.L.,Yu, S.C. Elsevier 2015 CURRENT APPLIED PHYSICS Vol.15 No.10

A systematic study of the conventional and inverse magnetocaloric effects, and critical behaviors in an alloy ingot of Ni<SUB>43</SUB>Mn<SUB>46</SUB>Sn<SUB>8</SUB>In<SUB>3</SUB> has been performed. Our results reveal the sample exhibiting structural and magnetic phase transitions at temperatures T<SUB>C</SUB><SUP>M</SUP> = 166 K (T<SUB>C</SUB> of the martensitic phase), T<SUB>M-A</SUB> = 260 K (the martensitic-to-austenitic phase transformation) and T<SUB>C</SUB><SUP>A</SUP> = 296 K (T<SUB>C</SUB> of the austenitic phase). The large values of refrigerant capacity (RC) around T<SUB>M-A</SUB> and T<SUB>C</SUB><SUP>A</SUP> are found to be RC<SUB>M-A</SUB> = 172.6 and RC<SUB>A</SUB> = 155.9 J kg<SUP>-1</SUP>, respectively, under an applied field change of 30 kOe. Our critical analyses near the T<SUB>C</SUB><SUP>M</SUP> and T<SUB>C</SUB><SUP>A</SUP> reveal that a coexistence of the long- and short-range ferromagnetic order in the martensitic phase, while the long-range ferromagnetic order exists in the austenitic phase. Interestingly, at around T<SUB>C</SUB><SUP>A</SUP>, the maximum magnetic entropy change (|ΔS<SUB>max</SUB>|) versus magnetic field H obeys a power law, |ΔS<SUB>max</SUB>| = a.H<SUP>n</SUP>, where the exponent n is found to be about 0.66.

채종박 품질이 이유돈의 성장에 미치는 영향

강창원,남기택,임호중,공진훈,안상태 한국축산학회 1995 한국축산학회지 Vol.37 No.4

This study was made to evaluate the nutritional values and glucosinolate contents of three types of rapeseed oil meal(RSM), originated from Canada(canola), China(CRSM:Chinese Rapeseed Oil Meal) and India (IRSM:Indian Rapeseed Oil Meal), and their dietary effects on the performance of weanling pigs. Nutritional evaluation included the contents of moisture, crude protein(CP), ether extracts (EE), crude fiber(CF), Ash, Ca and P, KOH solubility, tannin, and glucosinolate contents of each RSM. Total of two hundred-forty weanling pigs weighing about 20㎏ initially were housed in 24 pens with 10 pigs per pen. The thirty animals were assigned to one of eight rations : T₁ (0% RSM + 2% molasses), T₂ (6% canola + 2% molasses), T₃ (6% CRSM + 2% Molasses), T₄(6% IRSM + 2% molasses), T_5 (0% RSM + 5% molasses), T_6 (6% Canola + 5% molasses). T_7 (6% CRSM + 5% molasses), T_8 (6% IRSM + 5% molasses). During the experimental period, body weight and feed intakes were measured weekly and feed conversion rates were calculated. The results obtained from this experiments are summarized as follows. 1. The KOH solubility of canola, CRSM and IRSM was found to be 54.6, 35.7 and 64.8%, respectively. The glucosinolate contents of canola, CRSM and IRSM were found to be 0.11, 0.22 and 0.79%, respectively. 2. There were no significant differences between the 2% molasses and the 5% molasses supplemented groups in feed intake and body weight gain. 3. The 6% CRSM(T₃, T_7) and IRSM(T₄, T_8) groups were significantly (P$lt;0.05) inferior to the control groups(T₁, T_5) and 6% canola groups(T₂, T_6) in feed intake and body weight gains. The control groups(T₂, T_6) were significantly (P$lt;0.05) superior to the 6% canola groups(T₂, T_6), 6% CRSM(T₃, T_7) and 6% IRSM groups(T₄, T_8) in feed conversion rate.

H. pylori 제균 실패율과 clarithromycin 내성률의 일치성

허재형 ( J. H. Heo ),남승우 ( S. W. Nam ),노임환 ( I. H. Roe ),양미라 ( M. R. Yang ),김정택 ( J. T. Kim ),송일환 ( I. H. Song ),임창영 ( C. Y. Lim ),김정원 ( J. W. Kim ),신지현 ( J. H. Shin ) 대한소화기학회 2002 대한소화기학회 춘계학술대회 Vol.2002 No.-

<목적> H. pylori 제균 치료성적을 좌우하는 요소에는 약제와 대상 환자군의 선정, 균검사방법의 차이, 항생제 저항성 등이 중요시되고 있다. 이 중에서도 항생제 저항성은 나라간의 H. pylori 제균 성적을 다르게 하는 대표적인 원인이다. 우리나라는 제균률이 외국보다 저조하여 85%내외로 보고되고 있다. 본 연구의 목적은 H. pylori 제균 실패율과 clarithromycin 내성률을 조사하여 제균 실패 원인으로서의 clarithromycin

Prediction of pathologic staging with magnetic resonance imaging after preoperative chemoradiotherapy in rectal cancer: Pooled analysis of KROG 10-01 and 11-02

Lee, J.H.,Jang, H.S.,Kim, J.G.,Lee, M.A.,Kim, D.Y.,Kim, T.H.,Oh, J.H.,Park, S.C.,Kim, S.Y.,Baek, J.Y.,Park, H.C.,Kim, H.C.,Nam, T.K.,Chie, E.K.,Jung, J.H.,Oh, S.T. Elsevier Science Publishers 2014 Radiotherapy and oncology Vol.113 No.1

Background and purpose: The reported overall accuracy of MRI in predicting the pathologic stage of nonirradiated rectal cancer is high. However, the role of MRI in restaging rectal tumors after neoadjuvant CRT is contentious. Thus, we evaluate the accuracy of restaging magnetic resonance imaging (MRI) for rectal cancer patients who receive preoperative chemoradiotherapy (CRT). Methods and materials: We analyzed 150 patients with locally advanced rectal cancer (T3-4N0-2) who had received preoperative CRT. Pre-CRT MRI was performed for local tumor and nodal staging. All patients underwent restaging MRI followed by total mesorectal excision after the end of radiotherapy. The primary endpoint of the present study was to estimate the accuracy of post-CRT MRI as compared with pathologic staging. Results: Pathologic T classification matched the post-CRT MRI findings in 97 (64.7%) of 150 patients. 36 (24.0%) of 150 patients were overstaged in T classification, and the concordance degree was moderate (k=0.33, p<0.01). Pathologic N classification matched the post-CRI MRI findings in 85 (56.6%) of 150 patients. 54 (36.0%) of 150 patients were overstaged in N classification. 26 patients achieved downstaging (ycT0-2N0) on restaging MRI after CRT. 23 (88.5%) of 26 patients who had been downstaged on MRI after CRT were confirmed on the pathological staging, and the concordance degree was good (k=0.72, p<0.01). Conclusions: Restaging MRI has low accuracy for the prediction of the pathologic T and N classifications in rectal cancer patients who received preoperative CRT. The diagnostic accuracy of restaging MRI is relatively high in rectal cancer patients who achieved clinical downstaging after CRT.

Draft genome sequence of Halolamina rubra CBA1107^T, an agarolytic haloarchaeon isolated from solar salt

Lee, M.H.,Lee, H.W.,Song, E.J.,Song, H.S.,Yim, K.J.,Cha, I.T.,Seo, M.J.,Rhee, J.K.,Choi, H.J.,Kim, D.,Kim, K.N.,Roh, S.W.,Nam, Y.D. Elsevier Publishing Services 2014 MARINE GENOMICS Vol.18 No.2

Halolamina rubra CBA1107<SUP>T</SUP> (=CECT 8421<SUP>T</SUP>, JCM 19436<SUP>T</SUP>), an extremely halophilic archaeon, was isolated from non-purified solar salt in the Republic of Korea. H. rubra CBA1107<SUP>T</SUP> shows agarase activity, and its draft genome contains 2955,064bp with a G+C content of 69.0%. This is the first genome that has been sequenced in the genus Halolamina.

Comparison of the Haas and the Oxford classifications for prediction of renal outcome in patients with IgA nephropathy

Park, K.S.,Han, S.H.,Kie, J.H.,Nam, K.H.,Lee, M.J.,Lim, B.J.,Kwon, Y.E.,Kim, Y.L.,An, S.Y.,Kim, C.H.,Doh, F.M.,Koo, H.M.,Oh, H.J.,Kang, S.W.,Choi, K.H.,Jeong, H.J.,Yoo, T.H. W. B. Saunders Co ; Centrum Philadelphia 2014 Human pathology Vol.45 No.2

Pathologic features can provide valuable information for determining prognosis in IgA nephropathy (IgAN). However, it is uncertain whether the Oxford classification, a new classification of IgAN, can predict renal outcome better than previous ones. We conducted a retrospective cohort study in 500 patients with biopsy-proven IgAN between January 2002 and December 2010 to compare the ability of the Haas and the Oxford classifications to predict renal outcome. Primary outcome was a doubling of the baseline serum creatinine concentration (D-SCr). During a mean follow-up of 68months, 52 (10.4%) and 35 (7.0%) developed D-SCr and end-stage renal disease, respectively. There were graded increases in the development of D-SCr in the higher Haas classes. In addition, the primary endpoint of D-SCr occurred more in patients with the Oxford M and T lesions than those without such lesions. In multivariate Cox regression analyses, the Haas class V (HR, 12.19; P=.002) and the Oxford T1 (hazard ratio [HR], 6.68; P<.001) and T2 (HR, 12.16; P<.001) lesions were independently associated with an increased risk of reaching D-SCr. Harrell's C index of each multivariate model with the Haas and the Oxford classification was 0.867 (P=.015) and 0.881 (P=.004), respectively. This was significantly higher than that of model with clinical factors only (C=0.819). However, there was no difference in C-statistics between the 2 models with the Haas and the Oxford classifications (P=.348). This study suggests that the Haas and the Oxford classifications are comparable in predicting progression of IgAN.

Bactericidal Efficacy of GC - 100X against Major Food - Borne Pathogens and Detaching Effects of It against Escherichia coli O157 : H7 on Beef

(Nam Hoon Kwon),(S. H. Kim),(J. Y. Kim),(J. Y. Lim),(J. M. Kim),(W. K. Jung),(K. T. Park),(W. K. Bae),(K. M. Noh),(J. Hur),(J. W. Choi),(Y. H. Park) 대한보건협회 2002 대한보건협회 보건종합학술대회 Vol.- No.-

Local Observation of Ferroelectric Bi3.25La0.75Ti3O12 Thin Films by Atomic Force Microscopy

T. Y. Kim,조윌렴,H. J. Nam,H.R. Yoon,이지혜,M.R. Choi,오유진 한국물리학회 2006 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.49 No.III

Ferroelectric Bi3.25La0.75Ti3O12 (BLT) thin films have been grown by a sol-gel method. Annealing conditions after the drying process have been explored over a wide range of temperature. Highly (001)- and (h00)-oriented BLT thin films are prepared on Pt/TiO2 coated SiO2/Si(100), depending on annealing temperature. Structural properties, surface morphology, and electrical properties are studied by X-ray diffraction (XRD), scanning electron microscopy (SEM), and atomic electron microscopy (AEM), respectively. Ferroelectric domains in the thin films are observed by using AFM, registering the electrostatic force response of the thin films in the presence of a low ac field. It is found that the as-grown domain configuration and switching behavior are strongly dependent on crystal orientation, suggesting that annealing temperature is related to domain formation and its polarization-reversal dynamics.

Conserved sequences of thrombospondin‐related adhesive protein gene of <i>Plasmodium vivax</i> in clinical isolates from Korea

Nam, Myung H.,Jang, Jin W.,Kim, Hanna,Han, Eun T.,Lee, Won J.,An, Seong S. A.,Park, Ae S. D.,Lim, Chae S. Blackwell Publishing Ltd 2011 Tropical medicine & international health Vol.16 No.8

<P><B>Summary</B></P><P>Thrombospondin‐related adhesive protein (TRAP) from <I>Plasmodium vivax</I> (<I>P.?vivax</I>) became one of the important vaccine candidates for malaria, because <I>P.?vivax</I> TRAP (PvTRAP) is responsible for the sporozoite–host interactions. PvTRAP polymorphisms in the isolates from Republic of Korea (ROK) were analysed, setting the valuable baseline data for the future vaccine developments and clinical trials with PvTRAP, as a strong vaccine candidate. A total of 54 isolates were collected in 2010. PvTRAP genes from above isolates were amplified and sequenced, and the results were analysed and compared against Sal‐1 strain. Sequencing analysis of 1424‐bp‐size PvTRAP PCR products revealed one major allelic type with six non‐synonymous substitutions, where S81T, E95D, I121V and T127R substitutions were found in region II, and K371N and A425E substitutions from region IV. The ROK isolates revealed the limited sequence polymorphisms in PvTRAP in comparison with the reported isolates from other nations.</P>

임신중 난소종양의 임상적 병리학적 고찰

조태호,이권해,남계현,이정재,이해혁 순천향대학교 1990 논문집 Vol.13 No.1

순천향대학병원 산부인과에서 1974년부터 1988년까지 경험한 임신중 난소종양 54예에 대한 임상적병리학적 고찰을 하여 다음과 같은 결과를 얻었다. 1. 임신중 난소종양의 빈도는 같은 기간의 총분만수에 대해 1 : 391.9였고 전부 양성종양이었다. 2. 임신중 난소종양의 연령분포는 20∼42세였고 평균연령은 26.9세였다. 3. 출산력은 평균 분만횟수가 0.99회이고 75.9%에서 0∼1회의 분만횟수를 갖고 있었다. 4. 난소종양의 초진시 주소, 증상및 증후로는 하복통이 19예(35.2%)로 제일 많았으며, 질점상출혈과 성기출혈이 4예(7.4%), 종양촉진이 14예(25.9%)등이었다. 증상및 증후가 없었던 17예(31.5%)는 산전관리시 진단되었다. 5. 종양의 진단시기는 임신초기에 31예(57.4%), 임신중기에 16예(29.6%), 말기에 7예(13%)이었다. 6. 난소종양의 병리조직학적 소견에서 양성기형종이 19예(35.2%)로 제일 많았으며, 장액성낭선종이 6예(11.1%), 점액성낭선종과 단순낭종이 각 4예(7.4%)였으며 병리학적 결과를 알 수 없는 경우도 4예가 없었다. 7. 종양의 크기를 보면 직경 6cm미만이 17예 6∼10.9cm가 30예로 대부분을 차지하였으며 11∼14.9cm이 7예였다. 8. 임신초기에 합병증으로 수술한 12예중 9예는 염전으로 인해 수술을 시행하였다. 9. 난소종양의 발생부위는 좌측이 많아 31예(57.4%), 우측이 18예(33.3%)였으며 5예(9.3%에서 양측성이었다. 10. 수술방법은 보존적 낭종절제술, 난소절제술, 난소난관절제술등을 시행하였으며, 보조적 요법으로는 안정및 황체호르몬, 아편팅크, 완화제 등을 투여하였다. 11. 임신의 경과를 보면 만기분만 17예중 정상분만이 7예 제왕절개가 10예였고 수술후 자연 유산된 경우는 3예였다. Clinical and pathologic review of ovarian tumors in pregnancy was presented. During the 15 years from 1974 to 1988 there were 54 patients at the Department of Obstetrics and Gynecology, Soonchunhyang University Hospital. The result obtained follows: 1) The incidence of tumors in pregancy was 1 in 391.9 pregnancies and they were all benign. 2) Mean age was 26.9 years old and the range was 20∼42 years old. 3) Mean parity was 0.99. 4) As to the initial chief complaints or the mode of presentation, low abdominal pain was found in 19 cases(35.2%), vaginal spotting or bleeding in 4 cases(7.4%), palpable mass in 14 cases(25.9%). In the 17 cases(31.5%), free of symptoms or signs were detacted at antenatal care. 5) 31 cases(57.4%) were operated in first trimester, 16 cases(29.6%) in the second trimester, 7 cases(13%) in the third trimester. 6) Histopathology of those cases were benign cystic teratoma in 19 cases(35.2%), serous cystadenoma in 6 cases(11.1%), simple cyst in 4 cases(7.4%), mucinous cystadenoma in 4 cases(7.4%). 7) Size of tumor was under 6cm in 17 cases, 6∼10.9cm in 30 cases, 11∼14.9cm in 7 cases. 8) Complications of tumor were occurred in 12 cases, being 9 cases of torsion, 3 cases of rupture. 9) The left side tumor was more common being 31 cases(57.4%), and the right was 18 cases(33.3%) and 5 cases(9.3%) of tumor were bilateral. 10) Treatment was surgical being conservative cystectomy, salpingoophorectomy, adjuvant treatment were bed rest and administration of opium tincture, petrolatum and progesterone injection during the hospital day. 11) Outcome of pregnancy and mode of delivery; Spontaneous abortion occurred in 3 cases, full term delivery was noted in 17 cases, and Cesarean section in 10 cases.