http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
알레르기 피부반응시험상 아스페르길루스 항원에 양성 반응을 보인 천식 환자에서 알레르기성 기관지 - 폐 아스페르길루스증의 유병률
박중원,김희선,변주원,고시환,홍용국,김철우,최규옥,홍천수 대한천식알레르기학회 1997 천식 및 알레르기 Vol.17 No.4
Objective .' The incidence of ABPA was quite different according to the countries and the prevalence of ABPA has not been reported in Korea. In this study, we evaluated the prevalence of ABPA in asthmatics with positive skin reactivity to Aspergillus fumigatus (Af). Methods '. Ninety asthmatics with positive skin reactivity to Af were enrolled. The ABPA were diagnosed by the Greenburg and Pettersons criteria or by the pathologic features of lung. Results . Six cases out of 90 asthmatics (6.7 were diagnosed as ABPA (ABPA group). Total IgE level were not significantly different between ABPA group and asthmatics with Af skin reactivity (BA group n= 84) Five out of 6 ABPA had higher than 1000 ng/ml of total IgE and all six cases had more than 600/ul of peripheral blood eosinophil counts. Only two cases had the positive immunoprecipitin band to Af antigen. Antibody index of Af specific IgE and IgG in ABPA group were 5.58+3.35, 2.75+1.29, respectively and coutruls were. Three cases of ABPA had central bronchiectasis, two case has only infiltrative lung lesions, one case with destructive lung lesions and another one cases have no pulmonary pathologic lesion at chest radiology but with the serologic evidence of ABPA. Although we could not find statistical significance, the FEV, (70.1+ 27.0% vs 87.8+23.2%) and PEFR (71.8+30.6% vs 95. 0+ 26.5% ) of ABPA group were lower than those of BA group. Conclusion .'These results suggest that ABPA is not uncommon in Af sensitized asthmatics in Korea. We thought that initial examination of allergic skin test including Aspergillus should be emphasized for screening the ABPA in Korean asthmatics.
Effects of Tensile Twinning on the Stretch Formability of Mg
박중원,박상준,신광선 대한금속·재료학회 2017 METALS AND MATERIALS International Vol.23 No.3
This study examined the influences of twinning during the Erichsen test. {10-12} tensile twinning playsthe critical role in Mg alloys. Alloy elements and grain size are important factors that determine the formationof {10-12} tensile twins at room temperature. Mg-6.0Zn(Z6) and Mg-6.0Zn-0.3Ca(ZX60) alloyswere fabricated and their grain size was varied under different annealing conditions. Tensile twinning ispromoted by the addition of Ca, as assessed from measurements of the microstructure and the viscoplasticself-consistent calculations. The coarse-grain Ca-containing alloy showed the largest amount of tensiletwinning. However, the stretch formability increased with grain size up to a certain point and then decreased. Itcan be inferred that microstructures with large grains activated the tensile twin, which became origins ofcracks. The results of the small Erichsen test showed that tensile twinning contributes to high stretchformability releasing the stress concentration in the grain boundaries but the interaction between twin andslip causes cracks as the grain size increases.
기관지천식 환자의 말초혈액 총 호산구수 및 혈중 eosinophil cationic protein의 측정
박중원,김철우,홍천수 대한천식알레르기학회 1997 천식 및 알레르기 Vol.17 No.3
Objeetive.'We evaluated the clinical implications of serum ECP and peripheral blood eosinophil counts as indices of airway inflammation during the follow up of asthmatics (BA). Methods. We repeatedly measured the serum ECP, peripheral blood eosinophil counts and peak expiratory low rate (PFR) during the follow up of 24 symptomatic BA. Results '. Mean serum ECP level of BA at uncontrolled status of airflow limitation was significantly higher than that of controlled state (24.5 +- 3.7 ng/ml vs. 16.2 +- 1.9 ng/ml, p <0.05) and the ECP levels of controlled and uncontrolled status were significantly higher than that of health control subjects (n=10, 10.1+2.0 ng/ml, p<0.01 respectively). Peripheral blood eosinophils were also signifi- cantly increased in uncontrolled status than in controlled status of BA (535.7+81.0/uL vs. 300.4+33.4/pL, p <0.05). In controlled status, 8 BA had higher circulating ECP levels than in uncontrolled status, but with peripheral blood eosinophil counts, only 3 BA had higher levels in controlled status than in uncontrolled status. Variations of PFR correlated with the variations of serum ECP level (r = 0.5370, p<0.01) and variations of peripheral blood eosinophil count (r= 0.6215, p< 0.001). Conelusion.'Measurement of serum ECP and peripheral blood eosinophil count would be useful tools for monitoring the disease activity of asthma, but we could not obtain any more informstions from the measuremert of serum ECP levels than from the peripheral blood eosinophil counts.