Analysis and study of compact inductive power transfer systems for EV charging

Ai, Yongle,Hu, Xiaoqi,Li, Xing,Zhang, Xin The Korean Institute of Power Electronics 2021 JOURNAL OF POWER ELECTRONICS Vol.21 No.5

The double-sided LCC topology provides an efficient compensation method for electric vehicle (EV) wireless charging systems. However, the existence of two compensation coils results in an electric vehicle wireless charging device with a large volume, high power consumption, and low efficiency. To solve these problems, this paper proposes a wireless charging structure in which the compensation coils are separately integrated into the transmitting and receiving coils. First, the number of turns of the transmitting coil is optimized to maximize the coupling coefficient of the transmitting coil. Secondly, to minimize the redundant coupling effect, the relative placement of the compensation coils is studied. Based on the proposed coil integration method, it is possible to ignore the redundant coupling between the compensation coils and the transmitting and receiving coils. Then, the Ansys Maxwell and Ansys Twin Builder are used to build a joint simulation circuit to construct the proposed wireless charging system. Simulation and experimental results show that the system output power is 3.09 kW with a gap of 150 mm, and that the transmission efficiency is 95.49%. In addition, the integrated solution has a high transmission efficiency in the presence of front-to-back misalignment and vertical misalignment of electric vehicles.

A simple rat model of in situ reversible obstructive jaundice in situ reversible obstructive jaundice model

Xin Huang,Chong-Hui Li,Ai-Qun Zhang,Zhe Kong,Wan-Qing Gu,Jia-Hong Dong 대한외과학회 2017 Annals of Surgical Treatment and Research(ASRT) Vol.92 No.6

Purpose: To develop a simple and reliable rat model of in situ reversible obstructive jaundice with low morbidity and mortality rates. Methods: Rats were divided into 4 groups with 8 rats each: the sham-operated (SH) group only underwent laparotomy, the control internal drainage (ID-C) group underwent choledochoduodenostomy, the new internal drainage (ID-N) group and the long-term internal drainage (ID-L) group underwent choledochocholedochostomy. Common bile duct ligation was performed in all the drainage groups 7 days before reversal procedures. All rats were sacrificed for samples 7 days after the last operation except rats of the ID-L group that survived 28 days before sacrifice. Body weight, liver function, histopathological changes, morbidity and mortality were assessed. Results: One rat died and 2 rats had complications with tube blockage in the ID-C group. No death or complications occurred in the ID-N and ID-L groups. The drainage tube remained patent in the long-term observation ID-L group. Body weight showed no significant difference between the ID-C and ID-N groups after 7 days drainage. Liver function was not fully recovered in the ID-C and ID-N groups after 7 days drainage, but statistical differences were only observed in the ID-C group compared with the SH and ID-L groups. Periportal inflammation and bile duct proliferation showed severer in the ID-C group than in the ID-N group. Conclusion: The present study provided an efficient, simple, and reliable rat model that is especially suitable for long-term or consecutive studies of reversible obstructive jaundice.

BMB Reports : Over-expression of OsHsfA7 enhanced salt and drought tolerance in transgenic rice

( Ai Ling Liu ),( Jie Zou ),( Cui Fang Liu ),( Xiao Yun Zhou ),( Xian Wen Zhang ),( Guang Yu Luo ),( Xin Bo Chen ) 생화학분자생물학회(구 한국생화학분자생물학회) 2013 BMB Reports Vol.46 No.1

Heat shock proteins play an important role in plant stress tolerance and are mainly regulated by heat shock transcription factors (Hsfs). In this study, we generated transgenic rice over-expressing OsHsfA7 and carried out morphological observation and stress tolerance assays. Transgenic plants exhibited less, shorter lateral roots and root hair. Under salt treatment, over-expressing OsHsfA7 rice showed alleviative appearance of damage symptoms and higher survival rate, leaf electrical conductivity and malondialdehyde content of transgenic plants were lower than those of wild type plants. Meanwhile, transgenic rice seedlings restored normal growth but wild type plants could not be rescued after drought and re-watering treatment. These findings indicate that over-expression of OsHsfA7 gene can increase tolerance to salt and drought stresses in rice seedlings. [BMB Reports 2013; 46(1): 31-36]

Expression Profiles of Class A Rice Heat Shock Transcription Factor Genes Under Abiotic Stresses

Ai-Ling Liu,Jie Zou,Xian-Wen Zhang,Xiao-Yun Zhou,Wen-Fang Wang,Xing-Yao Xiong,Li-Yun Chen,Xin-Bo Chen 한국식물학회 2010 Journal of Plant Biology Vol.53 No.2

Expression profiles of 12 class A rice heat shock transcription factor genes (OsHsfAs) were analyzed by semi-quantitative reverse transcriptase polymerase chain reaction. The OsHsfA genes exhibited tissue-specific expressions under normal condition. OsHsfA1a, A2d, and A9 were predominantly expressed in young spike. Expression responses of the 12 OsHsfAs under abiotic stresses were analyzed in the shoots of rice seedling. Most OsHsfA genes responded quickly to heat stress except for OsHsfA1a, A3,and A9 which were almost unaffected. In particular,OsHsfA2a expression in response to heat stress was highest among the heat shock factors examined. However, the majority of the increased OsHsfAs expression responses to salt, polyethylene glycol (PEG), and cold treatments primarily occurred during the later stages (3 to 24 h) of stress exposure. Furthermore, most of OsHsfA gene expressions were little affected and only a few (OsHsfA3, A4d, A7,and A9) genes had slow responses to cold treatment. The results indicate that the transcript levels of OsHsfAs during heat stress exposure were distinct from those of plants subjected to salt, PEG, and cold stresses, suggesting that there might be different regulatory networks between heat and non-heat stress.

Passive Ranging Based on Planar Homography in a Monocular Vision System

( Xin-mei Wu ),( Fang-li Guan ),( Ai-jun Xu ) 한국정보처리학회 2020 Journal of information processing systems Vol.16 No.1

Passive ranging is a critical part of machine vision measurement. Most of passive ranging methods based on machine vision use binocular technology which need strict hardware conditions and lack of universality. To measure the distance of an object placed on horizontal plane, we present a passive ranging method based on monocular vision system by smartphone. Experimental results show that given the same abscissas, the ordinatesis of the image points linearly related to their actual imaging angles. According to this principle, we first establish a depth extraction model by assuming a linear function and substituting the actual imaging angles and ordinates of the special conjugate points into the linear function. The vertical distance of the target object to the optical axis is then calculated according to imaging principle of camera, and the passive ranging can be derived by depth and vertical distance to the optical axis of target object. Experimental results show that ranging by this method has a higher accuracy compare with others based on binocular vision system. The mean relative error of the depth measurement is 0.937% when the distance is within 3 m. When it is 3-10 m, the mean relative error is 1.71%. Compared with other methods based on monocular vision system, the method does not need to calibrate before ranging and avoids the error caused by data fitting.

<i>Glaciihabitans tibetensis</i> gen. nov., sp. nov., a psychrotolerant bacterium of the family <i>Microbacteriaceae</i>, isolated from glacier ice water

Li, Ai-Hua,Liu, Hong-Can,Xin, Yu-Hua,Kim, Song-Gun,Zhou, Yu-Guang International Union of Microbiological Societies 2014 International journal of systematic and evolutiona Vol.64 No.2

<P>A Gram-stain-positive, aerobic, non-spore-forming, short-rod-shaped bacterium, designated strain MP203<SUP>T</SUP>, was isolated from ice water of Midui Glacier in Tibet Autonomous Region, China. The strain was psychrotolerant, growing at 0–25 °C. 16S rRNA gene sequence analysis showed that strain MP203<SUP>T</SUP> was most similar to <I>Frigoribacterium faeni</I> NBRC 103066<SUP>T</SUP>, <I>Compostimonas suwonensis</I> KACC 13354<SUP>T</SUP>, <I>Frigoribacterium mesophilum</I> KCTC 19311<SUP>T</SUP>, <I>Marisediminicola antarctica</I> CCTCC AB 209077<SUP>T</SUP> and <I>Alpinimonas psychrophila</I> JCM 18951<SUP>T</SUP>, with similarities of 97.4, 97.2, 97.2, 97.1 and 97.1 %, respectively. The maximum-likelihood phylogenetic tree indicated that strain MP203<SUP>T</SUP> clustered with nine genera of the family <I>Microbacteriaceae</I>, namely <I>Frigoribacterium</I>, <I>Compostimonas</I>, <I>Marisediminicola</I>, <I>Alpinimonas</I>, <I>Frondihabitans</I>, <I>Clavibacter</I>, <I>Subtercola</I>, <I>Klugiella</I> and <I>Agreia</I><I>.</I> However, bootstrap analysis showed that there was no significance in the branching pattern of the linage comprising strain MP203<SUP>T</SUP> and any existing generic lineage of the family <I>Microbacteriaceae</I>. DNA–DNA hybridization results indicated levels of relatedness between strain MP203<SUP>T</SUP> and <I>Marisediminicola antarctica</I> CCTCC AB 209077<SUP>T</SUP>, <I>Frigoribacterium faeni</I> NBRC 103066<SUP>T</SUP>, <I>Frigoribacterium mesophilum</I> KCTC 19311<SUP>T</SUP>, <I>Compostimonas suwonensis</I> KACC 13354<SUP>T</SUP> and <I>Alpinimonas psychrophila</I> JCM 18951<SUP>T</SUP> were 25.8±7.3, 29.6±7.6, 19.7±6.7, 16.0±4.2 and 12.4±5.1 % (mean±<SMALL>sd</SMALL>), respectively. The G+C content of the genomic DNA was 64.1 mol%. Analysis of the cell-wall peptidoglycan revealed that the peptidoglycan structure of strain MP203<SUP>T</SUP> was B10 type with Gly[<SMALL>l</SMALL>-Hse]–<SMALL>d</SMALL>-Glu–<SMALL>d</SMALL>-DAB, containing 2, 4-diaminobutyric acid (DAB) as a diagnostic amino acid. The cell-wall sugars were rhamnose, ribose, mannose and glucose. The major fatty acids were anteiso-C<SUB>15 : 0</SUB>, iso-C<SUB>16 : 0</SUB> and anteiso A-C<SUB>15 : 1</SUB>. An unusual compound identified as anteiso-C<SUB>15 : 0</SUB>-DMA (1, 1-dimethoxy-anteiso-pentadecane) was also present in strain MP203<SUP>T</SUP>. The predominant menaquinone was MK-10. Diphosphatidylglycerol (DPG), phosphatidylglycerol (PG), one unknown glycolipid and four unknown lipids were detected in the polar lipid extracts. As strain MP203<SUP>T</SUP> was distinguishable from phylogenetically related genera in the family <I>Microbacteriaceae</I> in terms of its physiological and chemotaxonomic characteristics and phylogenetic position, it was considered to represent a novel species of a new genus. Thus, the name <I>Glaciihabitans tibetensis</I> gen. nov., sp. nov. is proposed. The type strain of <I>Glaciihabitans tibetensis</I> is MP203<SUP>T</SUP> ( = CGMCC 1.12484<SUP>T</SUP> = KCTC 29148<SUP>T</SUP>).</P>

Research on Children`s Costumes of Dong Tribe

Shun Ai Zahng,Xin He 한국패션비즈니스학회 2009 패션 비즈니스 Vol.13 No.6

Anti-Proliferation Effects and Molecular Mechanisms of Action of Tetramethypyrazine on Human SGC-7901 Gastric Carcinoma Cells

Ji, Ai-Jun,Liu, Sheng-Lin,Ju, Wen-Zheng,Huang, Xin-En Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.8

Aim: To investigate the effects of tetramethypyrazine (TMP) on proliferation and apoptosis of the human gastric carcinoma cell line 7901 and its possible mechanism of action. Methods: The viability of TMP-treated 7901 cells was measured with a 3-(4, 5-dimethyl-thiazol-2-yl)-2,5-diphenyltetrazolium bromide assay (MTT) and cell apoptosis was analyzed by flow cytometry. The distribution of cells in different phases of cell cycle after exposure of TMPs was analyzed with flow cytometry. To investigate the molecular mechanisms of TMP-mediated apoptosis, the expression of NF-${\kappa}Bp65$, cyclinD1 and p16 in SGC-7901 cells was analyzed by reverse transcription-polymerase chain reaction (RT-PCR) and western blotting. Results: TMP inhibited the proliferation of human gastric carcinoma cell line 7901 in dose and time dependent manners. Cell growth was suppressed by TMP at different concentrations (0.25, 0.5, 1.0, 2.0 mg/ml), the inhibition rate is 0.46%, 4.36%, 14.8%, 76.1% (48h) and 15.5%, 18.5%, 41.2%, 89.8% (72h) respectively. When the concentration of TMPs was 2.0mg/ml, G1-phase arrest in the SGC-7901 cells was significant based on the data for cell cycle distribution. RT-PCR demonstrated that NF-${\kappa}Bp65$ and cyclin D1 mRNA expression was significantly down-regulated in 7901 cells treated with 2.0 mg/ml TMP for 72h (p<0.05), while the p16 mRNA level was up-regulated (p<0.05). The protein expression of NF-${\kappa}Bp65$ and cyclin D1 decreased gradually with the increase in TMP concentration, compared with control cells (p<0.05), while expression of protein p16 was up-regulated (p<0.01). Conclusion: TMP exhibits significant anti-proliferative and pro-apoptotic effects on the human gastric carcinoma cell line SGC-7901. NF-${\kappa}Bp65$, cyclinD1 and p16 may also play important roles in the regulation mechanisms.

Development of Lateral Flow Immunoassay for Antigen Detection in Human Angiostrongylus cantonensis Infection

Mu-Xin Chen,Jia-Xu Chen,Shao-Hong Chen,Da-Na Huang,Lin Ai,Ren-Li Zhang 대한기생충학열대의학회 2016 The Korean Journal of Parasitology Vol.54 No.3

Fused Polypeptide with DEF Induces Apoptosis of Lung Adenocarcinoma Cells

Liang, Ai-Ling,Zhang, Ting-Ting,Zhou, Ning,Huang, Di-Nan,Liu, Xin-Guang,Liu, Yong-Jun,Tu, Zhi-Guang Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.12

To analyze the effects of a new unknown peptide DEF on the growth of tumor cells, a fused polypeptide TAT-DV1-DEF was designed and synthesized. The lung adenocarcinoma cell line GLC-82 treated with TAT-DV1-DEF was analyzed with a cell counting kit 8, and the location of polypeptides in cells was observed under laser confocal microscopy. The efficiency of polypeptide transfection and changes in nuclear morphology were analyzed by flow cytometry and fluorescence microscopy, respectively. Finally, the mechanism of tumor cell growth inhibition was evaluated by Western blotting. We found that TAT-DV1-DEF could significantly inhibit the growth of the lung adenocarcinoma cell line GLC-82, but not the normal human embryonic kidney cell line HEK-293. Polypeptides were found to be mostly localized in the cytoplasm and some mitochondria. The efficiency of polypeptide transfection in the two cell types was approximately 99%. Apoptotic nuclei were observed under fluorescence microscopy upon treatment with polypeptides and DAPI staining. Western blot analyses indicated that the polypeptide inhibition of tumor cell growth was apoptosis dependent. In the present study, we demonstrated that fused polypeptides could induce apoptosis of the lung adenocarcinoma cell line GLC-82, indicating that the new unknown peptide DEF has antitumor effects.