Magnetically separable Au-TiO₂/nanocube ZnFe₂O₄ composite for chlortetracycline removal in wastewater under visible light

Jia, Yuefa,Liu, Jia,Cha, Sangwon,Choi, Soobin,Park, Yun Chang,Liu, Chunli THE KOREAN SOCIETY OF INDUSTRIAL AND ENGINEERING 2017 JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY -S Vol.47 No.-

<P><B>Abstract</B></P> <P>Magnetically recyclable Au-TiO<SUB>2</SUB>/nanocube ZnFe<SUB>2</SUB>O<SUB>4</SUB> (Au-TiO<SUB>2</SUB>/NC ZFO) composite photocatalysts have been successfully prepared by a hydrothermal method. It was revealed that Au-TiO<SUB>2</SUB>/NC ZFO composite with 25% mass percentage of Au-TiO<SUB>2</SUB> exhibited a significantly enhanced photocatalytic efficiency toward chlortetracycline (CTC) degradation as compared to the binary TiO<SUB>2</SUB>/NC ZFO composite. The enhanced performance can be attributed to the addition of Au nanoparticles, which act as electron traps aiding the electron-hole separation and increasing the light absorption through the surface plasmon resonance effect. The synthesized catalyst showed good stability after three cycles and could be easily separated by a magnet and reused.</P> <P><B>Highlights</B></P> <P> <UL> <LI> A new type ternary Au-TiO<SUB>2</SUB>/nanocube ZnFe<SUB>2</SUB>O<SUB>4</SUB>. </LI> <LI> The Au-TiO<SUB>2</SUB>/nanocube ZnFe<SUB>2</SUB>O<SUB>4</SUB> shows superior photocatalytic activity. </LI> <LI> The chlortetracycline can be removed by Au-TiO<SUB>2</SUB>/nanocube ZnFe<SUB>2</SUB>O<SUB>4</SUB>. </LI> <LI> Cycle degradation tests show the catalyst was highly active, stable and recoverable. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>Magnetically separable Au-TiO<SUB>2</SUB>/nanocube ZnFe<SUB>2</SUB>O<SUB>4</SUB> composite exhibit an outstanding photocatalytic activity in degradation of chlortetracycline (CTC) under visible light irradiation.</P> <P>[DISPLAY OMISSION]</P>

Neuroprotective effect of caffeic acid phenethyl ester in 3-nitropropionic acid-induced striatal neurotoxicity

Jia Bak,Hee Jung Kim,Seong Yun Kim,Yun-Sik Choi 대한생리학회-대한약리학회 2016 The Korean Journal of Physiology & Pharmacology Vol.20 No.3

Caffeic acid phenethyl ester (CAPE), derived from honeybee hives, is a bioactive compound with strong antioxidant activity. This study was designed to test the neuroprotective effect of CAPE in 3-nitropropionic acid (3NP)-induced striatal neurotoxicity, a chemical model of Huntington’s disease (HD). Initially, to test CAPE’s antioxidant activity, a 2,2’-azino-bis-3-ethylbenzthiazoline-6-sulfonic acid (ABTS) antioxidant assay was employed, and CAPE showed a strong direct radicalscavenging eff ect. In addition, CAPE provided protection from 3NP-induced neuronal cell death in cultured striatal neurons. Based on these observations, the <i>in vivo</i> therapeutic potential of CAPE in 3NP-induced HD was tested. For this purpose, male C57BL/6 mice were repeatedly given 3NP to induce HD-like pathogenesis, and 30 mg/ kg of CAPE or vehicle (5% dimethyl sulfoxide and 95% peanut oil) was administered daily. CAPE did not cause changes in body weight, but it reduced mortality by 29%. In addition, compared to the vehicle-treated group, robustly reduced striatal damage was observed in the CAPE-treated animals, and the 3NP-induced behavioral defi cits on the rotarod test were signifi cantly rescued after the CAPE treatment. Furthermore, immunohistochemical data showed that immunoreactivity to glial fibrillary acidic protein (GFAP) and CD45, markers for astrocyte and microglia activation, respectively, were strikingly reduced. Combined, these data unequivocally indicate that CAPE has a strong antioxidant eff ect and can be used as a potential therapeutic agent against HD.

Correction to: Amelioration of radiation‑induced liver damage by p-coumaric acid in mice

Yun-Hong Li,Jiang-Xue Wu,Qian He,Jia Gu,Lin Zhang,Hao-Zhi Niu,Xin-Wen Zhang,Han-Ting Zhao,Jia-Ying Xu,Li-qiang Qin 한국식품과학회 2023 Food Science and Biotechnology Vol.32 No.5

In the original publication, incorrect versions of Figs. 2 , 3 ,4 and 5 were published. Specifi cally, the arrows in Figs. 2 , 3and 4 were moved outside the representative images, and theFig. 5 was wrongly replaced by another fi gure. The correctversion of Figs. 2 , 3 , 4 , and 5 , were shown below.

Amelioration of radiation-induced liver damage by p-coumaric acid in mice

Yun-Hong Li,Jiang-Xue Wu,Qian He,Jia Gu,Lin Zhang,Hao-Zhi Niu,Xin-Wen Zhang,Han-Ting Zhao,Jia-Ying Xu,Li-qiang Qin 한국식품과학회 2022 Food Science and Biotechnology Vol.31 No.10

Radiation-induced liver damage (RILD) is a spiny problem in radiotherapy or other circumstances that exposure to radiation. The need for radioprotective agent is increasing to protect liver tissue. This study aimed to explore the hepatoprotective effect of p-coumaric acid (CA) against RILD. C57BL/6 male mice were exposed to 4 Gy irradiation and administrated with CA for 4 days starting on the same day of irradiation. Mice were sacrificed to obtain blood and liver tissues on day 3.5 or 14 post irradiation, respectively. The blood and liver tissues were collected. As compared with the only irradiated group, CA supplementation improved liver morphology, decreased serum alanine aminotransferase and aspartate aminotransferase, inhibited BCL2-associated X (BAX) protein expression, and improved the mice hematopoietic function. CA at the dose of 100 mg/kg body weight showed better effect compared to the other doses. Thus, CA might possess potential to protect against RILD.

A method for analysis of head cover deformation and vibration amplitude in Francis hydro-turbine system by combination of CFD and FEA

Yun Jia,Feng-Chen Li,Xianzhu Wei,Xiao-Bin Li,Zhi-He Li 대한기계학회 2017 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.31 No.9

It is of great importance to predict the deformation and vibration characteristics of the hydro-turbine structure accurately for the stable operation when the turbine is running under the alternating load of the flow field. In this paper, we proposed a methodology for analysis of the head cover deformation and vibration amplitude in the high-head Francis hydro-turbine system, in which Computational fluid dynamics (CFD) is employed to simulate the complex flow field in the head cover flow passage and the CFD-captured pressure distribution is provided for Finite element analysis (FEA) as a new load input to obtain more accurate head cover deformation and vibration calculation results. The results obtained by this method are compared with the results of the conventional algorithm and laboratory experimental results, demonstrated a better consistency. The great advantage of this method is that it allows vibration amplitude analysis and predictions under varied working conditions by adjusting the flow field parameters according to the specific working conditions. Therefore, it has supportive significance in optimization of the hydro-turbine structural turbine design as well as stabilizing operations at hydropower stations.

Routine Limitation of Fifteen Retrieved and Analyzed Lymph Nodes is Not Adequate to Optimal Staging pT3NO Gastric Cancer

Jia Yun Shen,Sung Soo Kim,Jae-Ho Cheong,Woo Jin Hyung,Seung Ho Choi,Sung Hoon Noh 대한외과학회 2006 대한외과학회 학술대회 초록집 Vol.2006 No.11

Causes, Features, and Outcomes of Drug-Induced Liver Injury in 69 Children from China

( Yun Zhu ),( Yong Gang Li ),( Jia Bo Wang ),( Shu Hong Liu ),( Li Fu Wang ),( Yan Ling Zhao ),( Yun Feng Bai ),( Zhong Xia Wang ),( Jian Yu Li ),( Xiao He Xiao ) 대한소화기학회 2015 Gut and Liver Vol.9 No.4

Background/Aims: Drug-induced liver injury (DILI) is a frequent cause of pediatric liver disease; however, the data on DILI are remarkably limited. Methods: All 69 children hospitalized with DILI between January 2009 and December 2011 were retrospectively studied. Results: A total of 37.7% of the children had medical histories of respiratory infection. The clinical injury patterns were as follows: hepatocellular 89.9%, cholestatic 2.9%, and mixed 7.2%. Liver biopsies from 55 children most frequently demonstrated chronic (47.3%) and acute (27.3%) hepatitis. Hypersensitivity features, namely, fever (31.9%), rash (21.7%), and eosinophilia (1.4%), were found. Twenty-four children (34.8%) developed chronic DILI. Antibiotics (26.1%) were the most common Western medicines (WMs) causing DILI, and the major implicated herbs were Ephedra sinica and Polygonum multiflorum. Compared with WM, the children whose injuries were caused by Chinese herbal medicine (CHM) showed a higher level of total bilirubin (1.4 mg/dL vs 16.6 mg/dL, p=0.004) and a longer prothrombin time (11.8 seconds vs 17.3 seconds, p=0.012), but they exhibited less chronic DILI (2/15 vs 18/39, p=0.031). Conclusions: Most cases of DILI in children are caused by antibiotics or CHM used to treat respiratory infection and present with hepatocellular injury. Compared with WM, CHM is more likely to cause severe liver injury, but liver injury caused by CHM is curable. (Gut Liver 2015;9:525-533)

초사(楚辭)에 나타난 식물 소재의 활용 및 향유 방식 -굴원(屈原)의 시문을 중심으로-

윈쟈옌 ( Jia Yan Yun ),성종상 ( Jong Sang Sung ) 한국전통조경학회 2014 한국전통조경학회지 Vol.32 No.4

본 연구는 초사에 수록된 굴원의 시 속에 등장하는 식물을 대상으로 B.C. 340부터 B.C. 277 사이의 식물 활용 형태, 향유방식 등을 상징적인 구사의 관점에서 고찰하였다. 본 연구의 결과를 요약하면 다음과 같다. 6)첫째, 초사에는 총 80분류군(taxa), 56종의 식물이 등장하는데, 기원전에 이미 이런 식물들이 존재했고 생활 속에서 향유되었다는 사실을 확인하였다. 둘째, 정원에서 쓰이는 식물은 향수란, 바질, 적작약, 큰까치수영, 구릿대, 백목련, 국화, 창포, 지치, 자목련등이 있고, 장식용으로 쓰이는 식물은 천궁, 구릿대, 등골나무, 연꽃, 마디풀, 바질, 여라, 금채석곡, 두형 등이 있으며, 선물용으로는 고량강과 삼이 있고, 제사용으로는 바질, 향수란, 파초가 있었다. 셋째, 식물 향유 방식의 고찰을 통해 미각적으로 향유하는 식물은 백목란, 국화, 목서, 바질, 화초, 천궁 등이 있고, 촉각적으로 향유하는 식물은 백목련, 마미송, 백목 등으로 나타났다. 넷째, 식물의 상징적 구사의 고찰을 통해 고결한 품격을 상징하는 식물은 화초, 구릿대, 향수란, 바질, 창포가 있고, 악인을 상징하는 식물은 남가새, 조개풀, 야애, 우미호, 도꼬마리였다. 초사에 대한 고찰을 통해 전국시대에 주로 사용된 식물 소재와각 식물의 활용 및 향유 형태를 알 수 있었다. 또한 몇몇 식물은 현재에도 유사한 용도로 사용되고 있음을 확인하였다. This study aims to sort out the plants in Poetry of the South what is in the written by Qu Yuan in the Kingdom of Chu and to analyze the utility and appreciation of plants. The conclusions are as follows. First, there were 80 plant names and 56 plant species were sorted out, and these results can confirm that the plants were existed in the 340-277 BC. Second, through analyzing the utility of the plants, herba lycopi, basil etc. as the garden plants; lotus, chrysanthemum etc. as the ornamental plants; galangal and cannabis sativa as the present; basil, musa basjoo, etc. as the sacrifice plants. Third, through analyzing the appreciation of the plants, golden birch, chrysanthemum etc. for gustatory appreciation; herba lycopi and pine tree etc. for tactile appreciation; bamboo for sensory appreciation. Forth, through analyzing the token of the plants, calamus and basil etc. are the symbol of personal character noble; wormwood and caltrop etc. are the symbol of villain. Based on the research of Poetry of the South, it can help to understand the plants culture in 340-277 BC, and it will be a useful information for the plant design.

『홍루몽(紅樓夢)』에 나타난 소상관(瀟湘館)의 의경(意境) 분석

윈쟈옌 ( Jia Yan Yun ),김태경 ( Tae Kyung Kim ) 한국전통조경학회 2014 한국전통조경학회지 Vol.32 No.2

본 연구의 목적은 문헌고찰을 통해 중국 청나라 소설『홍루몽』에 등장하는 가상 정원인 소상관의 의경을 분석하는 것이다. 결론을 요약하면 다음과 같다. 첫째, 『홍루몽』에 묘사된 가상 정원은 실제로 재현이 가능한 것을 확인할 수 있다. 둘째, 소상관의 의경 분석을 통해『홍루몽』은 정원 식물들의 의미를 많이 활용하여 의경을 연출한다는 것을 이해할 수 있다. 셋째, 소상관의 주요 조성 이념은 사법자연(師法自然)이며, 대표적인 공간 구성 원리는 곡경통유(曲徑通幽)와 차경이라고 할 수 있다. 넷째, 『홍루몽』과『원야』에 나타난 전통정원의 조성 이념이 기본적으로 일치하는 것을 발견할 수 있다. 본 연구는 중국 청나라 소설『홍루몽』에 나오는 소상관의 의경 분석을 통해 정원 의경 분석의 틀을 제시하였고 향후 정원 의경을 분석하는 데 유용한 정보를 마련하였다. 연구 결과를 통해『홍루몽』은 중국전통정원 연구에 매우 유효한 자료임이 확인되었다. This study aims to analyze the Spatial Imagery(Yijing) of the Weeping Bamboo Lodge(Xiaoxiangguan) which is from Chinese Qing dynasty novel “Dream of Red Mansions”. The conclusions are as follows. First, the fantasy garden what is described in the novel “Dream of Red Mansions” can be recreated in reality. Second, through the analysis of the spatial imagery, the plants of the Weeping Bamboo Lodge contains a lot of meaning, and mainly through the plants to express meaning. Third, the main garden concept of the Weeping Bamboo Lodge is “Inspired by Nature”, the representative space constitution principle is “the art of circuitous” and “view borrowing”. Fourth, the concept of traditional garden in the novel “Dream of Red Mansions” and the landscape architecture theory book “Yuan Ye(Art of garden building)” is essentially in agreement. The generation process of garden spatial imagery was showed in this study, and on the basis of this, the garden spatial imagery of the Weeping Bamboo Lodge was analyzed. It is provided the useful information for the future research, and the novel “Dream of Red Mansions” as a important book was determined in the research of traditional garden.

시경(詩經)에 나타난 식물 소재의 문화적 해석 -상징요소와 경관조성요소의 관점에서-

윈쟈옌 ( Jia Yan Yun ),손용훈 ( Yong Hoon Son ) 한국전통조경학회(구 한국정원학회) 2014 한국전통조경학회지 Vol.32 No.3

본 연구는 시경(詩經)에 등장하는 식물들을 도출하고 분석하여, 상징요소와 경관조성요소의 관점에서 기원전 3~11세기 식물들에 담겨 있는 문화적인 의미를 해석하였다. 본 연구의 결과를 요약하면 다음과 같다. 첫째, 시경에 등장하는 식물명칭은 총 147개, 종류는 총 136개로 기원전에 이미 이런 종류의 식물이 존재했고 생활 속에서 향유되었다는 사실을 확인하였다. 둘째, 식물 소재에 대한 문화적 해석을 통해 연인을 상징하는 식물은 부들과 연꽃 등이 있고 이별을 상징하는 식물에는 작약과 수양버들 등이 있고, 군자를 상징하는 식물은 대나무가 있고, 다산(多産)을 상징하는 식물은 화초가 있음을 알 수 있었다. 셋째, 식물 소재와 풍경에 대해서 시경에 언급된 경관에 대한 묘사 내용을 분석한 결과, 황철나무와 비술나무 등은 사랑의 장소를 묘사하는데 사용되고, 갈대와 원추리 등은 우수의 장소를 조성하는 식물로 등장하며, 개암나무와 약밤나무 등은 권위의 장소를, 미나리, 춘재 등은 학문의 장소에 사용된 식물이었음을 알 수 있었다. 시경에 대한 고찰을 통해 춘추전국시대에 주로 사용된 식물 소재와 각 식물에 담겨 있는 문화적 의미를 알 수 있었다. 또한 몇몇 식물은 현재에도 유사한 의미와 용도로 사용되고 있음을 알 수 있었다. The purpose of this study is to sort out the plants in ”The Book of Songs”, and to analyze the cultural significance of plants from the viewpoint of the symbolic elements and the landscape elements in the 3~11 century BC. The conclusions are as follows. First, there were 147 plant names and 136 plant species in “The Book of Songs”, and these results can confirm that the plants were existed in the 3~11 century BC. Second, through analyzing the cultural significance of the plants, cattail, lotus, etc. are the symbol of lovers; peony and willow are the symbol of farewell; bamboo is the symbol of gentleman; and Japanese pepper is the symbol of fecundity. Third, at the viewpoint of the landscape elements, the poplar, dwarf elm, etc. can be used as a place of affection; reed and nepenthe can make a place of melancholy, hazel and chestnut tree, etc. can make a place of power and position, celery and water shield etc. can be used as a place of knowledge. Based on the research of “The Book of Songs”, it can help to understand the plants culture in 3~11 century BC, and it will be a useful information for the plant design.