차류에 의한 찻물중 중금속(Cd, Pb)제거 효과

백승화,박성수,김중만 圓光大學校 1996 論文集 Vol.31 No.2

차재료를 찻물에 담근후 차건데기를 건저내고 마시는 차류의 중금속 제거능을 조사하기 위하여 Cd, Pb 용액에서 보리차, 옥수수차, 쟈스민차, 현미녹차, 홍차, 결명자차, 감껍질차, 귤껍질차, 누룽지의 입자별, 농도별, 온도별 제거정도를 조사한 결과는 다음과 같다. 입자의 크기가 작아질수록 모든 차에 있어서 중금속 제거력은 증가 되었고, 금속별 제거량은 Cd는 결명자차(3.253-6.136mg/g)가, Pb는 쟈스민차(6.784-7.557mg/g)가 높았다. 농도별 중금속 제거량은 중금속의 농도가 증가할 수록 증가하였는데 Cd와 Pb는 쟈스민차(1.209-4.815mg/g)가 제거력이 높았다. 농도별 중금속의 제거작용은 모든 차류에서 증가되었으나 옥수수차는 Pb에서 0.497-0.647mg/g로 제일 낮았다. 온도별 중금속 제거량은 온도가 높아질수록 증가하여 Cd은 결명자차가 4.080-7.799mg/g, Pb는 쟈스민차가 7.003-7.763mg/g으로 증가하는 경향을 보였다. 이상의 결과로 부터 맹물로 끓여마시는 것보다는 각종 차를 이용하여 찻물을 만들어 마시면 음용수에 함유된 중금속을 제거하는데 도움이 된다. To investigate heavy metals(Cd and Pb) removablity by the tea materials (barley-tea, corn-tea, jasmin-tea, brown rice-green tea, black-tea, cassia tora-tea, persimmon peel-tea, orange peel-tea and rice-tea) in the tea-water, heavy metal removability of nine kinds of tea was investigated in the various conditions; particle size of tea(20, 40, 70 mesh), concentration of heavy metal(25, 50, 100 ppm) and extraction temperature(20, 30, 50, 100℃). The removabilities by the tea solids were increased as the particle size decreased, concentration of heavy metal increased, and extracting temperature increased. Of the nine kinds of tea, Cd and Pb removability by jasmin-tea was highest. In addition, heavy metal removability by cassia tora tea was better than that of other tea as extraction temperature was increased.

한천, Sodium Alginate 및 Carrageenan첨가가 유과(부수게)바탕의 품질에 미치는 영향

김중만,전예정,박효숙,송영애,백승화,김명곤 한국식생활문화학회 2005 韓國食生活文化學會誌 Vol.20 No.1

This study was to evaluate effects of agar, sodium alginate and carrageenan on quality of Yugwa(Busuge) base. In the base preparation agar, sodium alginate and carrageenan were added 0.0, 0.1, 0.5, 1.0 and 3.0%(w/w), respectively. Volume, shape, hardness. color(L, a and b value), crude lipid content and sensory evaluation(taste and crispness) of the Yugwa base was measured. Volume of the base was higher than control in case of 0.1~0.5%(w/w) agar, sodium alginate and carrageenan, of which sodium alginate was the highest. Shapes were similar to control. Hardness and crude lipid content was decreased proportional to amount of addition of the three seesweed polysaccharides. the whiteness(L-value) was increased but the yellowness(a-value) and the redness(bvalue) decreased. Taste and crispness were increased in the case of 0.1~1.0%(w/w) of sodium alginate, but agar and carrageenan decreased.

찻물에서의 Cd과 Pb 이온 제거에 관한 차입자의 효과

김중만,백승화,박성수 한국식품영양학회 1998 韓國食品營養學會誌 Vol.11 No.5

차재료를 찻물에 담근 후 차건데기를 건저내고 마시는 차류의 중금속 제거력을 조사하기 위하여 Cd과 Pb 용액에서 보리차, 옥수수차, 쟈스민차, 현미녹차, 홍차, 결명자차, 감껍질차, 귤껍질차, 누룽지의 입자별, 농도별, 온도별 제거 정도를 조사한 결과는 다음과 같다. 입자의 크기가 작아질수록 모든 차에 있어서 중금속 제거력은 증가되었고, 금속별 제거량은 Cd는 결명자차(3.253∼6.136㎎/g)가, Pb은 쟈스민차(6.784∼7.557㎎/g)가 높았다. 농도별 중금속 제거량은 중금속의 농도가 증가할수록 증가하였는데 Cd와 Pb는 쟈스민차(1.209∼4.815㎎/g, 0.642∼7.004㎎/g)가 제거력이 높았다. 농도별 중금속의 제거작용은 모든 차류에서 증가되었으나 옥수수차는 Pb에서 0.497∼0.647㎎/g로 제일 낮았다. 온도별 중금속 제거량은 온도가 높아질수록 증가하여 Cd은 결명자차가 4.080∼7.799㎎/g, Pb는 쟈스민차가 7.003∼7.763㎎/g으로 증가하는 경향을 보였다. Removabilities of heavy metals(Cd and Pb) by the tea materials (barley-tea, corn-tea, jasmin-tea, brown rice-green tea, cassia tora-tea, persimmon peel-tea, orange peel-tea and rice-tea) in the tea-water were studied in the various conditions ; particle size of tea(20, 40, 70 mesh), concentration of heavy metal(25, 50, 100 ppm) and extraction temperature(20, 30, 50, 100℃). The removabilities by the tea solids were increased as the particle size decreased, concentration of heavy metal increased, and extracting temperature increased. Of the nine kinds of tea, Cd and Pb removability by jasmin-tea was highest. In addition, heavy metal removability by cassia tora tea was better than that of other tea as extraction temperature was increased.

김치용 간절임 배추의 저장에 관한 연구 : Ⅱ. 젖산, Calcium Chloride, 저장온도가 저장중 간절임 배추의 품질에 미치는 영향

김윤숙,김중만,백승화,문정옥,황호선,김인숙 圓光大學校 1987 論文集 Vol.21 No.2

배추를 다듬기 하는데 발생한 폐기량은 7.5∼14% (w/w)이었고 10±2℃에서 30일간 방치한 경우 약 17∼25% 발생하였다. 간절임 배추의 pH값은 저장온도가 낮을수록, 염도가 높을수록 높았으나 calcium chloride 첨가가 절임배추의 pH값의 변화에는 영향을 주지 않았다. 유리당의 함량변화는 최소 약 4% 수준에서 산의 함량과는 반비례적으로 변화하여 저장 90일에는 소금농도가 낮고 저장온도가 높은 경우 적게 감소되었다. 균수변화에서 세균과 효모는 전 기간을 통해 증가한 반면, 곰팡이는 감소하였다. 한편 산의 첨가와 CaCl? 첨가시 소금으로만 절인 경우보다 세균과 효모는 낮은 속도로 증가했다. 저장중 경도는 온도가 낮고 염도가 높으며 젖산을 첨가한 경우 다소 높게 유지됐고, CaCl? 첨가의 경우 잎과 줄기에서 월등히 높았다. 휘발산과 불휘발산의 함량변화에서 온도가 낮고 염도가 높은경우 불휘발산의 함량이 낮았는데 특히 젖산 첨가시 불휘발산의 증가를 억제하는 것으로 나타났다. flavor score 는 저온과 고염도 젖산첨가시 유리하였다. This study was to investigate the effects of storage temperature, lactic acid and calcium chloride addition about the pH values, sugar content, firmness, volatile and nonvolatile acidity, microbial counts and flavor of the salted chinese cabbages during storage (90 days), and trim loss of chinese cabbages during the trimming of raw and storaged (30 days) chinese cabbages. The waste rate was in the course of trimming of raw chinese, cabbages was 7.5-14(w/w). The proportion of trim loss was highly correlated to sunshine duration, temperature, humidity and handling for the storage. Free sugar was decreased fast and much in the case of high temperature and low level sodium chloride in comp rison of low temperature and high sodium chloride, but ?? and lactic acid did not affect its changes. Time to reach the lowest pH values were fast in the case of high temperature and low salt content. Lactic acid affected inital pH value (4.38-4.57) and constant pH value in each case was increased at low salt content, at high temperature, and then the pH values were slowly increased when volatile acidity was increased. Firmness was high in the case of addition of lactic acid and calcium chloride, low temperature, high sodium chloride concentration. Especially, calcium chloride addition remarkably showed high firmness. Flavor score was high in the case of low storage temperature, high yeast counts were slowly increased in spite of low temperature and high salt content, but mold counts were slightly increased during all period Lactic acid, low temperature and high sodium chloride were effective to inhibit the growth of microorganisms. Volatile and nonvolatile acidity was increased during all storage period ; however, lactic acid and low temperature storage inhibited their increase. To conclude, quality of salted chinese cabbages was effective at low temperature storage, lactic acid and calcium chloride addition, and high salt concentration.

Success Rate and Risk Factors Associated with Mini-Implants Reinstalled in the Maxilla

Baek, Seung-Hak,Kim, Bo-Mi,Kyung, Seung-Hyun,Lim, Joong Ki,Kim, Young Ho The Angle Orthodontist 2008 The Angle orthodontist Vol.78 No.5

<B>Abstract</B><P>Objective: To determine the difference in the success rate for two types of oral installed mini-implants (OMIs): one type of initially installed OMI and a new implant of the same type that is reinstalled.</P><P>Materials and Methods: The subjects consisted of 58 patients (19 male, 39 female; mean age = 21.78 ± 5.85 years) who had received at least one OMI (self-drilling type, conical shape with 2.0-mm upper diameter and 5-mm length) in the attached gingiva of the upper buccal posterior regions for maximum anchorage during en masse retraction. If an OMI failed, a new one was immediately installed in the same area after 4 to 6 weeks or in an adjacent area immediately. The total number of initially installed OMIs (II-OMI) was 109 and the total number of reinstalled OMIs (RI-OMI) was 34. Statistical analysis was performed using χ2 test, Kaplan-Meier method, log-rank test, and Cox proportional hazards regression model.</P><P>Results: The success rate and mean duration were 75.2% and 10.0 months, respectively, for II-OMI and 66.7% and 6.4 months, respectively, for RI-OMI. Age, vertical skeletal pattern, and site and side of implantation were not related to the success rates of II-OMI and RI-OMI. Log-rank test showed that II-OMI in males and Class III malocclusions were more prone to failure. The relative risk of II-OMI failure in Class III malocclusions as opposed to Class I malocclusions was 5.36 (95% confidence interval, 2.008 to 14.31, P = .001).</P><P>Conclusion: The success rate of the II-OMI was not statistically different from that of the RI-OMI. Sex and ANB angle might be more important factors for better II-OMI results.</P>

고체산화물 연료전지의 페로브스카이트와 스피넬 구조를 갖는 Sm-Sr-(Co,Fe,Ni)-O 시스템의 공기극 특성

백승욱(Baek, Seung-Wook),김정현(Kim, Jung-Hyun),백승환(Baek, Seung-Whan),배중면(Bae, Joong-Myeon) 한국신재생에너지학회 2007 한국신재생에너지학회 학술대회논문집 Vol.2007 No.06

Perovskite-structured samarium strontium cobaltite (SSC), which is mixed ionic electronic conductor (MIEC), is considered as a promising cathode material for intermediate temperature-operating solid oxide fuel cell (SOFC) due to its high electrocatalytic property. Cathode material containing cobalt (Co) is unstable at high temperature and has a relatively high thermal expansion property. In this paper, Sm-Sr-(Co,Fe,Ni)-O system with perovskite and spinel structures was investigated in terms of electrochemical property and thermal expansion property, respectively. Area specific resistance (ASR) was measured by ac impedance spectroscopy to investigate the electrochemical property of cathode, and thermal expansion coefficient (TEC) was measured by using dilatometer. Micro structure of cathode was observed by scanning electron microscopy. Perovskite-structured Sm_{0.5}Sr_{0.5}CoO_{3-delta} showed the ASR of 0.87{Omega}/cm^{2}, and Sm_{0.5}Sr_{0.5}NiO_{3-delta}, which actually has a spinel structure, showed the lowest TEC value of 13.3{times}10^{-6}/K.

The Role of Postsplenectomy Reactive Thrombocytosis in Advanced Epithelial Ovarian Cancer

( Seung Hoon Baek ),( Jun Hyeok Kang ),( Soo Young Jeong ),( Myeong Seon Kim ),( E Sun Paik ),( Yoo-young Lee ),( Chel Hun Choi ),( Tae-joong Kim ),( Jeong-won Lee ),( Byoung-gie Kim ),( Duk-soo Bae ) 대한산부인과학회 2019 대한산부인과학회 학술대회 Vol.105 No.-

Objective: Thrombocytosis as part of paraneoplastic syndrome has been associated with poor ovarian cancer survivals. During maximal cytoreductive surgery in advanced ovarian cancer, about 30% of patients has splenectomy to achieve optimal cytoreduction. About 75% of individuals without myeloproliferative disorders develops thrombocytosis after splenectomy in general population. However, the incidence of thrombocytosis after splenectomy and its role on survival in advanced epithelial ovarian cancer is still unclear. Methods: This is a retrospective cohort study using data from Samsung Comprehensive Cancer Center, Seoul, Korea (January 1, 2012, and December 31, 2017). We identified patients who were diagnosed with advanced epithelial ovarian cancer and had splenectomy during primary debulking surgery. Results: Eighty nine patients were eligible for this study. Median age was 55 years (33-79) and pretreatment CA 125 was 870.3 U/mL (8.8-16719). 74.2% (66/89) and 25.8% (23/89) was FIGO stage IIIC and IV, respectively. 56% of patients showed thrombocytosis on postoperative day 7 after splenectomy. Preoperative platelet count was 307 K/μL (121-671) and postsplenecomty platelet count on day 7 was significantly increased at 502 K/μL with a range of 116-1029 K/μL (P < 0.001), which is 70% increase on average. When we divide the entire cohort into two groups (< 70% increase, group 1 vs. ≥ 70% increase, group 2), there is no difference in progression free survival (P = 0.584) and overall survival (P = 0.700). In multivariate analysis adjusting stage, level of residual disease, CA 125, and age, platelet counts changes after splenectomy did not affect the survival outcomes (PFS; HR 1.027 95%CI 0.637 - 1.656, OS; HR 1.328 95%CI 0.654 - 2.695). No difference in thromboembolic events was also observed between groups. Conclusion: As opposed to thrombocytosis related with paraneoplastic syndrome, postsplenectomy reactive thrombocytosis does not affect survival outcomes in advanced epithelial ovarian cancer.

Poster Session:PS 0494 ; Nephrology : Effects of Acute Kidney Injury and Chronic Kidney Disease on Long-Term Mortality After Coronary Artery Bypass Grafting

( Seung Seok Han ),( Na Ra Shin ),( Seon Ha Baek ),( Shin Young Ahn ),( Dong Ki Kim ),( Se Joong Kim ),( Ho Jun Chin ),( Dong Wan Chae ),( Ki Young Na ) 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1

Background: Both acute kidney injury (AKI) and chronic kidney disease (CKD) are important issues in patients undergoing coronary artery bypass grafting (CABG), particularly with regard to mortality. However, their synergistic or discrete effects on longterm mortality remain unresolved. Methods: A total of 1899 patients undergoing CABG were retrospectively analyzed. The adjusted hazard ratios (HRs) for all-cause mortality were calculated after stratifying the timeframes. To evaluate the synergistic effects between AKI and CKD, the relative excess risk due to interaction (RERI) was applied. Results: The presence of AKI, CKD, or both increased the HRs for mortality, compared with the absence of both: AKI alone, 1.84 (1.464-2.319); CKD alone, 2.46 (1.735-3.478); and AKI and CKD together, 3.21 (2.301-4.488) [figure 1]. However, the relationships with mortality were different between AKI and CKD, according to the timeframes: AKI primarily affected early mortality, particularly within 3 years, whereas CKD had a relatively constant effect on both the early and the late periods. When the parameters from the RERI were obtained, there was a synergistic effect on early mortality between AKI and CKD. Conclusions: The relationships with mortality following CABG were different between AKI and CKD. However, their effects were not exclusive but synergistic.

Enhancement of Antioxidant Activities and Changes of Volatile Compounds from the Mixed Berry Juice through Fermentation by Lactobacillus plantarum

Joong-Hee PARK,Seung-Hee LIM,Hun-Joo KWON,Jae-Bum PARK,Hyun-Su SIM,Hee Sop NAM,Myoung-Dong KIM,Hyung-Hee BAEK,Suk-Jin HA 한국생물공학회 2016 한국생물공학회 학술대회 Vol.2016 No.10

A study on injection analysis of pump cap parts to increase production quality

Seung Yub Baek,Eun Chan Wi,Min Sung Ko,Yi Seob Yun,Joong Bae Lee,Min Su Kim 한국생산제조학회 2022 한국생산제조시스템학회 학술발표대회 논문집 Vol.2022 No.5