• 제목/요약/키워드: L-value

검색결과 9,264건 처리시간 0.033초

쪽 色素에 의한 絹纖維 染色에 관한 硏究 -발효 염색에 대하여- (A Study on the Silk Dyeing With Natural indigo Extracted from Polygoum tinctorium -On the fermentation dyeing-)

  • 정인모;남성우
    • 한국잠사곤충학회지
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    • 제40권1호
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    • pp.78-85
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    • 1998
  • Colorants were prepared by extraction of natural indigo which was harvested just in the blooming season(in the late of July). 100 g of fresh leaves soaking in 1 ιwater was kept at 3$0^{\circ}C$, 30 hours. A solution of 3g/l calcium hydroxide was added into it to precipitate dye substance and it was freezing-dried into powder form. The fermentation and dyeing conditions were investigated. The results obtained are summarized as follows; K/S value of dyed silk fabrics of fermentation conditions was higher at 95$^{\circ}C$ for 20 min. than at 4$0^{\circ}C$ for 20 hours. Furthermore, K/S value of dyed silk fabric was raised by the addition of 5g/l of glucose and 5g/l of NaOH. K/S value of dyed silk fabric was raised by the addition of 5g/l of glucose and 5g/l of NaOH. K/S value increased as extending of dyeing time when dyed till 2 hours at 3$0^{\circ}C$. K/S value decreased in order of 3$0^{\circ}C$, 4$0^{\circ}C$ and 5$0^{\circ}C$, at the various dyeing temperatures and dyeing concentrations, and colour fastness ranged from 4 to 5 grade in terms of washing, perspiration and light fastness.

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근적외 분광분석법을 이용한 녹차의 색도 분석 (Determination of Color Value (L, a, b) in Green Tea Using Near-Infrared Reflectance Spectroscopy)

  • 이민석;정명근
    • 한국작물학회지
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    • 제53권spc호
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    • pp.108-114
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    • 2008
  • 녹차 품질평가의 한 요인이 되는 색도 평가 시 기존 평가 방법인 육안평가 혹은 색차 분석에 의존하고 있는 현행 분석방법을 신속, 간편하며 재현성이 높고, 녹차 품질관련 기타 성분과 동시분석이 가능한 녹차 색차 분석용 NIRS 검량식을 작성한 결과를 요약하면 다음과 같다. 1. 공시된 녹차 시료를 대상으로 색차계를 이용하여 색도 값(L, a, b)을 조사한 결과 검량식 작성용 시료는 L값이 평균 53.37($48.52{\sim}57.72$), a값이 평균 -7.55($-10.02{\sim}-4.63$), b 값이 평균 18.07($14.00{\sim}22.02$)을 나타내었고, 작성 검량식의 평가용으로 이용된 예견치 분석용 시료와 거의 동일한 범위를 나타내었다. 2. 녹차의 색차 분석용 NIRS 검량식을 검토한 결과 색차 중 명도에 해당하는 L 값은 원시 스펙트럼에 2차 미분(2nd derivative, 8 nm gap, 6 points smoothing, 1 point second smoothing)을 수행한 조건에서 $R^2$ = 0.936으로 가장 우수한 양상을 나타내었고, 적색에 해당되는 색차 a값과 황색에 해당하는 b값은 1차 미분(1st derivative, 4 nm gap, 4 points smoothing, 1 point second smoothing)조건에서 $R^2$가 각각 0.991 및 0.958로 가장 우수한 결과를 나타내었다. 3. 최적의 녹차 색차 분석용으로 작성된 각각의 NIRS 검량식을 미지시료에 적용하여 정확성을 평가한 결과 색도값 L, a 및 b의 결정계수는 각각 0.905, 0.986 및 0.931로 매우 높은 상관을 보였으며, 이들 검량식은 향후 NIRS를 이용한 녹차 관련 연구 및 녹차 산업현장에서 품질관리를 위한 효율적 분석방법으로 활용이 가능할 것으로 판단된다.

Prevalence of JAK2 V617F, CALR, and MPL W515L Gene Mutations in Patients with Essential Thrombocythemia in Kurdistan Region of Iraq

  • Saeed, Bestoon Muhammad;Getta, Hisham Arif;Khoshnaw, Najmaddin;Abdulqader, Goran;Abdulqader, Aveen M. Raouf;Mohammed, Ali Ibrahim
    • 대한임상검사과학회지
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    • 제53권1호
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    • pp.41-48
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    • 2021
  • Essential thrombocythemia (ET) is a clonal bone marrow stem cell disorder, primarily involving the megakaryocytic lineage. The WHO 2016 guidelines include the molecular detection of JAK2, MPL, and CALR mutations as a major diagnostic criterion for ET. This study aimed to determine the frequency of JAK2 V617F, MPL W515L, and CALR mutations in Iraqi Kurdish patients afflicted with ET, and to analyze their clinical and hematological features. A total of 73 Iraqi Kurdish patients with ET were enrolled as subjects, and analysis was achieved utilizing real-time PCR. The frequency of JAK2 V617F, CALR, and MPL W515L mutations was determined to be 50.7%, 22%, and 16.4%, respectively. No statistically significant difference was obtained when considering the age and gender among different genotypes. The JAK2 V617F mutated patients had significantly higher white blood cell counts and hemoglobin levels than the CALR-positive patients (P-value=0.000, 0.007, respectively), MPL W515L-positive patients (P-value=0.000, 0.000, respectively), and triple negative patients (P-value=0.000, 0.000, respectively). Also, the JAK2 V617F mutated patients showed higher platelet count as compared to the MPL W515L-positive patients (P-value=0.02) and triple negative patients (P-value=0.04). Furthermore, significantly lower white blood cell count and hemoglobin levels were associated with CALR positivity (P-value=0.000, 0.01, respectively), MPL W515L-positivity (P-value=0.001, 0.000, respectively), and triple negativity (P-value=0.000, 0.000, respectively), as compared to patients with combined mutations. In conclusion, apart from a relatively high frequency of MPL W515L mutation, our data is comparable to earlier reports, and highlights the importance of genotyping the JAK2 V617F, MPL W515L, and CALR mutations for accurate diagnosis of patients with ET.

정상(正常) 임산부(妊産婦)의 혈청중(血淸中) H.P.L.의 면역학적(免疫學的) 측정(測定)에 관(關)한 연구(硏究) (H.P.L. Value in Serum of Normal Pregnancy and Pospartum State by Hemagglutination-Inhibition Reaction)

  • 정애리;신면우
    • Clinical and Experimental Reproductive Medicine
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    • 제3권1호
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    • pp.13-19
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    • 1976
  • Serum levels of human placental lactogen have been measured by hemagglutination-inhibition reaction in 67 normal pregnant state and in 15 postpartum 24 hour state, HAIR is less sensitive and reliable method than radioimmunoassay, but simple, rapid, less expensive and fairly accurate, so it is more helpful in screening of large antenatal population with or without high risk complications. 1) Sensitivity of HPL-HAIR test kit was $0.1{\mu}g$/ml of H.P.L. serum level and had no cross reaction to HCG or male serum or non-pregenant female or newborn infant, 2) H.P.L. value was around $2{\mu}g$/ml until 24th week of pregnancy and rose to $6{\sim}8$ ${\mu}g$/ml continuously until about 36th week of pregnancy and then slightly decreased or stationary. 3) H.P.L. value in postpartum 24 hour state was undetectable. 4) There was poor correlation between maternal serum H.P.L. value at term and baby weight.

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소풍척담탕(疏風滌痰湯)에 고지혈증(高脂血症)에 미치는 영향 (Experimental Study on the Effect of Sopungchukdamtang on Hyperlipidemia)

  • 박치상;박창국;김연섭
    • 대한한의학회지
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    • 제18권1호
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    • pp.470-479
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    • 1997
  • In order to determine the effect of Sopungchukdamtang experimental studies were performed in Hyperlipidemia Rats. The contents of serum Total cholesterol, Triglyceride, Free fatty acid, Phospholipid, HDL-cholesterol and LDL-cholesterol were measured The results were summarized as follows; 1. The content of Total cholesterol in the serum compared with control group tended to be decreased in Sopungchukdamtang(34mg/l00g) group, but did not show a significance. Sopungchukdamtang (17mg/l00g) group showed a significant value. 2. The content of Triglyceride in the serum compared with control group tended to be decreased in Sopungchukdamtang(17mg/l00g) group and Sopungchukdamtang(34mg/l00g) group, but did not show a significance. 3. The content of Free fatty acid in the serum was significantly decreased in Sopungchukdamtang(17mg/l00g) group and Sopungchukdamtang(34mg/l00g) group. 4. The content of Phospholipid in the serum compared with control group tended. to be decreased in Sopungchukdamtang(34mg/l00g) group, but did not show a significance. Sopungchukdamtang(17mg/l00g) group showed a significant value. 5. The content of HDL-cholesterol in the serum compared with control group tended to be increased in Sopungchukdamtang(17mg/l00g) group, but did not show a significance. Sopungchukdamtang(34mg/l00g) group showed a significant value. 6. The content of LDL-cholesterol in the serum compared with control group tended to be decreased in Sopungchukdamtang(34mg/l00g) group, but did not show a significance. Sopungchukdamtang(17mg/100g) group showed a significant value. According to the above results, it is assumed that Sopungchukdam-tang has a valid effect on Hyperlipidemia.

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소금과 Glucono-$\delta$-Lactone의 첨가 및 초고압 처리가 재구성 돈육의 이화학적 특성에 미치는 영향 (Effects of Salt, Glucono-$\delta$-Lactone and High Pressure Treatment on Physico-Chemical Properties of Restructured Pork)

  • 홍근표;박성희;김지연;고세희;민상기
    • 육가공
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    • 통권34호겨울호
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    • pp.26-39
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    • 2007
  • 본 실험은 소금 및 GdL의 첨가가 세척 및 가압 처리된 재구성육의 이화학적 특성에 미치는 효과를 규명하고자 실시되었다. 소금 및 GdL의 첨가는 재구성육의 결착강도를 현저하게 증가시켰고, 저염농도 또는 소금이 무첨가 되어도 소량의 GdL의 첨가에 의한 결착강도의 향상을 기대할 수 있었다. 그러나 GdL의 첨가는 색도를 가열처리와 유사하게 변색시켰고, 이러한 변색은 GdL의 증가와 더불어 현저하였다. 그러나 이들 단점은 세척이나 기타 첨가물에 의하여 향상시킬 수 있으리라 판단되었다. 따라서 본 실험의 결과에 의하면 소량의 소금 및 GdL의 조합을 통하여 바람직한 결착강도 및 변색 저하를 기대할 수 있었고, 첨가된 인산염과 carrageenan에 의한 보수력의 향상 효과를 얻을 수 있었다.

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소금과 Glucono-${\delta}$-Lactone의 첨가 및 초고압 처리가 재구성 돈육의 이화학적 특성에 미치는 효과 (Effects of Salt, Glucono-${\delta}$-Lactone and High Pressure Treatment on Physico-Chemical Properties of Restructured Pork)

  • 홍근표;박성희;김지연;고세희;민상기
    • 한국축산식품학회지
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    • 제26권2호
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    • pp.204-211
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    • 2006
  • 본 실험은 소금 및 GdL의 첨가가 세척 및 가압 처리된 재구성육의 이화학적 특성에 미치는 효과를 규명하고자 실시되었다. 소금 및 GdL의 첨가는 재구성육의 결착강도를 현저하게 증가시켰고, 저염농도 또는 소금이 무첨가 되어도 소량의 GdL의 첨가에 의한 결착강도의 향상을 기대할 수 있었다. 그러나 GdL의 첨가는 색도를 가열처리와 유사하게 변색시켰고, 이러한 변색은 GdL의 증가와 더불어 현저하였다. 그러나 이들 단점은 세척이나 기타 첨가물에 의하여 향상시킬 수 있으리라 판단되었다. 따라서 본 실험의 결과에 의하면 소량의 소금 및 GdL의 조합을 통하여 바람직한 결착강도 및 변색 저하를 기대할 수 있었고, 첨가된 인산염과 carrageenan에 의한 보수력의 향상 효과를 얻을 수 있었다.

한국 남성의 얼굴 피부색 판별을 위한 색채 변수에 관한 연구 (A Study on the Discriminant Variables of Face Skin Colors for the Korean Males)

  • 김구자
    • 한국의류학회지
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    • 제29권7호
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    • pp.959-967
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    • 2005
  • The color of apparels has the interaction of the face skin colors of the wearers. This study was carried out to classify the face skin colors of Korean males into several similar face skin colors in order to extract favorable colors which flatter to their face skin colors. The criterion that select the new subjects who have the classified face skin colors have to be decided. With color spectrometer, JX-777, face skin colors of subjects were measured quantitatively and classified into three clusters that had similar hue, value and chroma with Munsell Color System. Sample size was 418 Korean males and other 15 of new males subjects. Data were analyzed by K-means cluster analysis, ANOVA, Duncan multiple range test, Stepwise discriminant analysis using SPSS Win. 12. Findings were as follows: 1. 418 subjects who have YR colors were clustered into 3 kinds of face skin color groups. 2. Discriminant variables of face skin colors was 4 variables : L value of forehead, v value of cheek, c value of forehead, and b value of cheek from standardized canonical discriminant function coefficient 1 and c value of forehead, L value of forehead, b value of cheek. and L value of cheek from standardized canonical discriminant function coefficient 2. 3. Hit ratio of type 1 was $92.3\%$, of type 2 was $96.5\%$ and of type 3 was $92.6\%$ by the canonical discriminant function of 4 variables. 4. The canonical discriminant function equation 1 and 2 were calculated with the unstandardized canonical discriminant function coefficient and constant, the cutting score, and range of the score were computed. 5. The criterion that select the new subjects who have the classified face skin colors was decided.

치과용 심미 수복 재료들의 색상 연구를 통한 새로운 치과용 색체계의 제안 (PROPOSAL OF NEW DENIAL COLOR-SPACE FOR AESTHETIC DENIAL MATERIALS)

  • 오윤정;박수정;김동준;조현구;황윤찬;오원만;황인남
    • Restorative Dentistry and Endodontics
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    • 제32권1호
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    • pp.19-27
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    • 2007
  • 본 연구는 새로운 치과용 색체계 개발을 목적으로 현재 치과에서 사용되고 있는 Vita shade를 사용하는 9 제조사의 12종의 광중합형 복합레진과 1종의 치과용 도재의 색상을 diffuse/$8^{\circ}$ 수광 방식을 사용하는 분광색체계 (MiniScan XE plus, Model 4000S, Hunter Lab, USA)를 이용해 D65 표준광과 10도 관찰자 시야 하에서 CIE $L^*a^*b^*$ 값을 측정하고 색상 범위를 분석하였다. 분석한 정보를 color sorting system을 응용한 CNU Cons Dental Color Chart의 색상 표현 방식인 T###에 치과용 수복 재료들의 범위를 적용하여 다음의 결과를 얻었다. 측정된 $L^*a^*b^*$ 값의 분포를 분석해 보면 $L^*$ 값은 80.40과 52.70 사이에, $a^*$ 값은 10.60과 -3.60 사이에, 그리고 $b^*$ 값은 28.40과 2.21 사이에 분포한다. $L^*$ 값의 평균값은 67.40, 중앙값은 67.30이며, $a^*$ 값은 2.89와 2.91, $b^*$ 값은 14.30과 13.90 이다. 이러한 분석을 토대로 CNU Cons Dental Color Chart의 T###의 첫 번째 숫자에 해당하는 $L^*$ 값의 각 숫자간의 차이는 2.0으로, 그리고 2번째 숫자인 $a^*$ 값의 각 숫자간의 차이는 1, 그리고 세 번째 숫자인 $b^*$ 값의 각 숫자간의 차이는 2로 정하였다. T555에 해당하는 $L^*$ 값의 범위는 66.0이상, 68.0미만으로, $a^*$ 값의 범위는 3이상 4미만으로, $b^*$ 값의 범위는 14이상 16미만으로 결정하였다.

Prediction of Treatment Outcome of Chemotherapy Using Perfusion Computed Tomography in Patients with Unresectable Advanced Gastric Cancer

  • Dong Ho Lee;Se Hyung Kim;Sang Min Lee;Joon Koo Han
    • Korean Journal of Radiology
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    • 제20권4호
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    • pp.589-598
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    • 2019
  • Objective: To evaluate whether data acquired from perfusion computed tomography (PCT) parameters can aid in the prediction of treatment outcome after palliative chemotherapy in patients with unresectable advanced gastric cancer (AGC). Materials and Methods: Twenty-one patients with unresectable AGCs, who underwent both PCT and palliative chemotherapy, were prospectively included. Treatment response was assessed according to Response Evaluation Criteria in Solid Tumors version 1.1 (i.e., patients who achieved complete or partial response were classified as responders). The relationship between tumor response and PCT parameters was evaluated using the Mann-Whitney test and receiver operating characteristic analysis. One-year survival was estimated using the Kaplan-Meier method. Results: After chemotherapy, six patients exhibited partial response and were allocated to the responder group while the remaining 15 patients were allocated to the non-responder group. Permeability surface (PS) value was shown to be significantly different between the responder and non-responder groups (51.0 mL/100 g/min vs. 23.4 mL/100 g/min, respectively; p = 0.002), whereas other PCT parameters did not demonstrate a significant difference. The area under the curve for prediction in responders was 0.911 (p = 0.004) for PS value, with a sensitivity of 100% (6/6) and specificity of 80% (12/15) at a cut-off value of 29.7 mL/100 g/min. One-year survival in nine patients with PS value > 29.7 mL/100 g/min was 66.7%, which was significantly higher than that in the 12 patients (33.3%) with PS value ≤ 29.7 mL/100 g/min (p = 0.019). Conclusion: Perfusion parameter data acquired from PCT demonstrated predictive value for treatment outcome after palliative chemotherapy, reflected by the significantly higher PS value in the responder group compared with the non-responder group.