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Ewa Jabłońska-Ryś,Aneta Sławińska,Dominik Szwajgier 한국식품과학회 2016 Food Science and Biotechnology Vol.25 No.2
Fruiting bodies of Pleurotus ostreatus (oyster) and Cantharellus cibarius (chanterelle) mushrooms underwent acid fermentation using 3 strains of lactic acid bacteria (LAB) as starter cultures. Polyphenol contents, antioxidant activities, and phenolic acid contents in fresh, blanched, and fermented mushrooms were investigated. Fruiting bodies of oyster mushrooms exhibited higher total phenolic contents than chanterelle mushrooms. Blanching caused a decrease in polyphenol contents and antioxidant activities in both mushroom types. No important differences were observed in total phenolic compound contents (measured using Folin-Ciocalteau reagent) in mushrooms using different LAB strains. Lactobacillus plantarum was the most useful microorganism for lactic acid fermentation of fruiting bodies for reduction of the pH value. The highest concentrations of single phenolic acids: gallic, homogentisic, and ferulic acids were present in mushrooms fermented using L. plantarum.
Jakub Ederer,Adam Novák,Pavel Janoš,Martin Štastny,Jirí Henych,Matouš Bárta,Petr Ryšánek,Jakub Tolasz 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.123 No.-
Nanocrystalline cerium oxide (CeO2) was used as an effective catalytic and adsorption material for thesafe removal of selected phosphorus compounds. Several CeO2 samples were prepared by a simple coprecipitationmethod with subsequent annealing at temperatures between 400–600 C, and their sorptionability for inorganic phosphates was studied together with their ability to decompose the organophosphoruscompound - paraoxon methyl (PO) - with the goal to find the relations between the sorptionand catalytic activity of the prepared materials. It was found that a complex set of physical and chemicalcharacteristics (surface area, crystallite size, pore volume/size, the number of surface hydroxyl groups)plays a crucial role in the governing of adsorption ability and catalytic activity. From the dependenceof some characteristics (i.e., the number of surface hydroxyl groups, BET surface area, crystallite size)on the annealing temperature and their mutual correlations, the model describing the degradation oforganophosphate compounds on the surface of cerium oxide was deduced.
RY, DAE HEE,Goo, Yoon Hoe 한국수학교육학회 1999 純粹 및 應用數學 Vol.6 No.1
We introduce the notion of the ω-derived set and ω-dense, and investigate some of their properties.
Vitamin D Dependent Rickets Type 1A Caused by CYP27B1 Mutation
Na Ry Bak,Eun Song Song,Eun Mi Yang,Chan Jong Kim 대한소아신장학회 2019 Childhood kidney diseases Vol.23 No.2
Vitamin D dependent rickets type 1A (VDDR1A) is an autosomal recessive disorder caused by mutations in CYP27B1 . Clinical findings are growth retardation, hypotonia, muscle weakness, hypocalcemic seizures, and radiological features of rickets. We aimed to present the VDDR1A case with a genetic study of CYP27B1 . The 14- month-old boy was admitted to the hospital due to a seizure. Serum calcium, phosphorus, alkaline phosphatase, parathyroid hormone (PTH), 25(OH) vitamin D, and 1,25(OH)2 vitamin D values were 5.1 mg/dL, 3.7 mg/dL, 705 IU/L, 429 pg/mL, 24.9 ng/mL, and 8.8 pg/mL, respectively. Radiological study showed cupping and fraying of the distal ulna and radius. The molecular genetic study revealed that the patient had a compound heterozygous mutation, Phe443Profs*24 and c.589+ 1G>A, in CYP27B1 . Genetic analysis of the family members presented that the mother was heterozygous for the mutation c.589+1G>A, and that the father was heterozygous for Phe443Profs*24. The patient was treated with calcium lactate and calcitriol. Until now, six Korean patients with VDDR1A have been studied. Including this case, Korean patients with VDDR1A were found to have only three different mutations in 14 alleles, indicating that the mutation in the CYP27B1 gene is homogeneous in the Korean population.
Kyu-Ry Kim,Seung-Hak Baek 대한치과교정학회 2016 대한치과교정학회지 Vol.46 No.2
Objective: The purpose of this study was to investigate the static (SFF) and kinetic frictional forces (KFF) in sliding mechanics of hybrid bracket systems that involve placing a conventional bracket (CB) or active self-ligating bracket (ASLB) on the maxillary anterior teeth (MXAT) and a passive SLB (PSLB) on the maxillary posterior teeth (MXPT). Methods: The samples consisted of two thoroughbred types (group 1, anterior-CB + posterior-CB; group 2, anterior-ASLB + posterior-ASLB) and four hybrid types (group 3, anterior-CB + posterior-PSLBtype 1; group 4, anterior-CB + posterior-PSLB-type 2; group 5, anterior-ASLB + posterior-PSLB-type 1; group 6, anterior-ASLB + posterior-PSLB-type 2) (n = 13 per group). After maxillary dentition alignment and maxillary first premolars removal in the stereolithographically-made typodont system, a 0.019 × 0.025-inch stainless steel wire was drawn through the right quadrant of the maxillary arch at 0.5 mm/min for 5 min. The SFF and KFF were measured with a mechanical testing machine and statistical analyses were performed. Results: Four different categories of SFF and KFF were observed among all groups (all p < 0.001). Group 1 demonstrated the highest SFF and KFF; groups 4 and 3 were second and third highest, respectively. The fourth category included groups 2, 5, and 6. Placing PSLBs on the MXPT resulted in significant SFF and KFF reductions in cases with CBs on the MXAT, but not in cases with ASLBs on the MXAT. Conclusions: These data might aid in the development of a hybrid bracket system that enables low-friction sliding of an archwire through the MXPT.
Isotretinoin exposure in pregnant women in Korea
( Nae Ry Kim ),( So Ra Yoon ),( June Seek Choi ),( Hyun Kyong Ahn ),( So-young Lee ),( Dal Soo Hong ),( Jeong Sup Yun ),( Seong Yeon Hong ),( Yoon Ha Kim ),( Jung Yeol Han ) 대한산부인과학회 2018 Obstetrics & Gynecology Science Vol.61 No.6
Objective Isotretinoin is a notorious teratogen otherwise used for the treatment of acne vulgaris. Some countries, including those in North America and the European Union, implemented the pregnancy prevention program (PPP); however, no PPP has yet been established in South Korea. So the aim of this study was to evaluate the rate of pregnant women exposed to isotretinoin among the callers of the Korean Mother Safe Counseling Center. Methods This is a prospective cohort study. We evaluated the demographic characteristics, obstetric history, and isotretinoin exposure of pregnant women based on the mother safe registry from April 2010 to July 2016. Results Among 22,374 callers, 650 (2.9%) pregnant women were exposed to isotretinoin. The mean age was 29.0±4.4 years in the isotretinoin-exposed group and 32.0±4.2 years in the unexposed group (P<0.001). Moreover, the incidence of pregnancies within 30 days after isotretinoin discontinuation or during isotretinoin intake was 78.9% (513/650). The median duration of isotretinoin exposure was 18 (1-4,231) days. Furthermore, from 2011 to 2015, the incidence of isotretinoin exposure was 2.9±1.2 pregnancies per 10,000 births in South Korea. Conclusion Approximately 80% of pregnant women are exposed to isotretinoin within the recommended 30 days of contraception or during pregnancy. Therefore, the PPP has to be established in South Korea.