Transfer characteristics analysis of bilayer coil structures for wireless power transfer systems

Li, Yang,Ma, Jing-nan,Shi, Shao-bo,Huang, Yue-peng,Wang, Rui,Liu, Jia-ming,Ni, Xin The Korean Institute of Power Electronics 2021 JOURNAL OF POWER ELECTRONICS Vol.21 No.5

Although bilayer coil structures can satisfy the application requirements for inductively coupled power transfer (ICPT) systems in practice, the transfer characteristics of systems (e.g., transfer power, transfer efficiency, and misalignment tolerance) under external interference are seldom studied. In this paper, an equivalent model of a wireless power transfer (WPT) system with a bilayer coils structure was established, and the influences of coil structures on transfer power and efficiency were analyzed. Then, the bilayer coil structures were modeled through multi-physics simulations, the applicable range was determined, and the influences of the coil structures on the transfer performance were studied in detail. Finally, an experiment prototype was set up, and experimental results showed that the coupling coil structures has an obvious effect on the transfer performance. The research in this paper is beneficial for the operation safety and reliability of WPT systems.

Characterization of three serotonin receptors from the small white butterfly, <i>Pieris rapae</i>

Qi, Yi-xiang,Jin, Miao,Ni, Xu-yang,Ye, Gong-yin,Lee, Youngseok,Huang, Jia Elsevier 2017 Insect biochemistry and molecular biology Vol.87 No.-

<P><B>Abstract</B></P> <P>Serotonin (5-hydroxytryptamine, 5-HT) plays a key role in modulating diverse physiological processes and behaviors in both protostomes and deuterostomes. These functions are mediated through the binding of serotonin to its receptors, which are recognized as potential insecticide targets. We investigated the sequence, pharmacology and tissue distribution of three 5-HT receptors (Piera5-HT<SUB>1A</SUB>, Piera5-HT<SUB>1B</SUB>, Piera5-HT<SUB>7</SUB>) from the small white butterfly <I>Pieris rapae</I>, an important pest of cultivated cabbages and other mustard family crops. Activation of Piera5-HT<SUB>1A</SUB> or Piera5-HT<SUB>1B</SUB> by 5-HT inhibited the production of cAMP in a dose-dependent manner. Stimulation of Piera5-HT<SUB>7</SUB> with 5-HT increased cAMP level significantly. Surprisingly, with the exception of 5-methoxytryptamine, agonists including α-methylserotonin, 8-Hydroxy-DPAT and 5-carboxamidotryptamine activated these receptors poorly. The results are consistent with previous findings in <I>Manduca sexta</I>. All three receptors were blocked by methiothepin, but ketanserin and yohimbine were not effective. The selective mammalian 5-HT receptor antagonists SB 216641 and SB 269970 displayed potent inhibition effects on Piera5-HT<SUB>1B</SUB> and Piera5-HT<SUB>7</SUB> respectively. The results we achieved here indicate that the pharmacological properties of Lepidoptera 5-HT receptors are quite different from those in other insects and vertebrates and may contribute to development of new selective pesticides. This study offers important information on three 5-HT receptors from <I>P. rapae</I> that will facilitate further analysis of the functions of 5-HT receptors in insects.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Serotonin receptors Piera5-HT<SUB>1A</SUB>, Piera5-HT<SUB>1B</SUB>, and Piera5-HT<SUB>7</SUB> from <I>Pieris rapae</I> were cloned and examined. </LI> <LI> Upon serotonin activation, Piera5-HT<SUB>1A</SUB> and Piera5-HT<SUB>1B</SUB> inhibited cAMP production whereas Piera5-HT<SUB>7</SUB> induced it. </LI> <LI> All three receptors were poorly activated by serotoninergic agonists, indicating their distinct pharmacological properties. </LI> <LI> All three receptors were blocked by methiothepin; SB 216641 and SB 269970 inhibited Pr5-HT<SUB>1B</SUB> and Pr5-HT<SUB>7</SUB>, respectively. </LI> <LI> All three receptors were highly expressed in neuronal tissues while Pr5-HT<SUB>7</SUB> mRNA predominated in the gut. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

Expression and Characterization of a Novel Nitrilase from Hyperthermophilic Bacterium Thermotoga maritima MSB8

Zhi Chen,Huayou Chen,Zhong Ni,Rui Tian,Tianxi Zhang,Jinru Jia,Shengli Yang 한국미생물 · 생명공학회 2015 Journal of microbiology and biotechnology Vol.25 No.10

Ellipsometric Study of the Optical Properties of Silver Oxide Prepared by Reactive Magnetron Sputtering

Jian-Hong Qiu,Liang-Yao Chen,Jia-Ni Yu,Jing Li,Peng Zhou,Qing-Hai ong,ong-You Wang,Xiao-Yong Gao,Yue-Mei Yang,Yu-Xiang Zheng 한국물리학회 2005 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.46 No.2

A series of AgOx thin films were prepared by the DC-magnetron reactive-sputtering method at room temperature under different sputtering power and oxygen to argon ratio conditions. The optical properties of the AgOx films were studied by analysis of the spectroscopic ellipsometry data with the Tauc-Lorentz multi-oscillator model in the 1.5 4.5-eV photon-energy range. The spectra of absorption, XPS and PL were measured. The results indicate that the AgOx film changes from metallic to dielectric structure with increasing oxygen flux. Under the saturated oxidation condition after annealing, the dominating component will be Ag2O in the film to show indirect interband transitions occurring at about 0.57 eV and 2.43 eV, respectively, that are in agreement with the results of PL measurement and Lorentz analysis.

Possible Epithelial Ovarian Cancer Association with HPV18 or HPV33 Infection

Zhang, Pei-Pei,Zhou, Lei,Cao, Jia-Shi,Li, Yi-Ping,Zeng, Zhi,Sun, Ni,Shen, Li,Zhu, Hao-Yue,Ruan, Yang,Zha, Wen-Ting,Wang, Xin-Yu,Zhang, Ke-Qiang,Zhang, Ran Asian Pacific Journal of Cancer Prevention 2016 Asian Pacific journal of cancer prevention Vol.17 No.6

The present study was conducted to investigate the prevalence of HPV infection in epithelial ovarian cancer (EOC) in Hunan province. DNA samples were collected from paraffin embedded ovarian tissue from 322 patients with EOC, 99 with ovarian benign tumors and 199 normal persons. The polymerase chain reaction and direct sequencing were used to identify the HPV types in the samples. The relationship between the infection of human papillomavirus (HPV) and the epithelial ovarian carcinoma (EOC) was investigated combined with clinical data. The prevalence of HPV18 and HPV33 in EOC group and benign group was higher than in the normal group. HPV18 and HPV33 may play a role in the development of both EOC and ovarian benign tumor and may participate in the development of EOC with traditional risk factors, family history and abortion, possibly exerting synergistic effects.

1-(2-Pyridylazo)-2-naphthol as a synergistic additive for improving throwing power of through hole copper electronic electroplating

Lei Jin,Zhao-Yun Wang,Zhuan-Yun Cai,Jia-Qiang Yang,An-Ni Zheng,Fang-Zu Yang,De-Yin Wu,Dongping Zhan 한국공업화학회 2023 Journal of Industrial and Engineering Chemistry Vol.125 No.-

In this work, we develop a novel 1-(2-Pyridylazo)-2-naphthol (PAN)-based acidic sulfate copper electronicelectroplating process for compact, homogeneous and conformal copper thickening of throughhole (TH). The adsorption characteristics, electrochemical properties and the interaction mechanismsof three additives (PEG, SPS and PAN) are studied in detail. Scanning electron microscope (SEM) and opticalmicroscope (OM) reveal that PAN can make the copper coating in fine grains and high throwing powerof 90.35% in TH without an overhang phenomenon. Theoretical calculations illustrate that the bindingenergies between additive molecules and copper surface decrease in the order: PAN > SPS > PEG. Cyclic voltammetry experiments at rotating rates of 1200 and 200 r/min prove that PAN itself can accelerateand weakly suppress copper electrodeposition at the center and mouth of TH, respectively. PANbehaves respectively the synergistic and antagonistic effects with PEG at the mouth and center of TH,and the weakly synergistic effects with SPS both at the mouth and center of TH. The addition of PANto the virgin make-up solution (VMS) containing PEG and SPS causes decreasing the relative electriccharge (DQ) at high and low rotating rates from 18.52 ± 0.08% to 8.25 ± 0.05%, which satisfies the closercopper electronic electroplating rate at the center and mouth of TH. The effective and complicated synergisticeffects of the additives PEG, SPS and PAN can achieve compact, homogeneous and conformal copperthickening of TH.

Systemic Inflammatory Biomarkers, Especially Fibrinogen to Albumin Ratio, Predict Prognosis in Patients with Pancreatic Cancer

Lin Fang,Fei-Hu Yan,Chao Liu,Jing Chen,Dan Wang,Chun-Hui Zhang,Chang-Jie Lou,Jie Lian,Yang Yao,Bo-Jun Wang,Rui-Yang Li,Shu-Ling Han,Yi-Bing Bai,Jia-Ni Yang,Zhi-Wei Li,Yan-Qiao Zhang 대한암학회 2021 Cancer Research and Treatment Vol.53 No.1

Purpose Systemic inflammatory response is a critical factor that promotes the initiation and metastasis of malignancies including pancreatic cancer (PC). This study was designed to determine and compare the prognostic value of neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), monocyte-to-lymphocyte ratio (MLR), and fibrinogen-to-albumin ratio (FAR) in resectable PC and locally advanced or metastatic PC. Materials and Methods Three hundred fifty-three patients with resectable PC and 807 patients with locally advan-ced or metastatic PC were recruited in this study. These patients were classified into a training set (n=758) and a validation set (n=402). Kaplan-Meier survival plots and Cox proportional hazards regression models were used to analyze prognosis. Results Overall survival (OS) was significantly better for patients with resectable PC with low preoperative PLR (p=0.048) and MLR (p=0.027). Low FAR, MLR, NLR (p < 0.001), and PLR (p=0.003) were significantly associated with decreased risk of death for locally advanced or metastatic PC patients. FAR (hazard ratio [HR], 1.522; 95% confidential interval [CI], 1.261 to 1.837; p < 0.001) and MLR (HR, 1.248; 95% CI, 1.017 to 1.532; p=0.034) were independent prognostic factors for locally advanced or metastatic PC. Conclusion The prognostic roles of FAR, MLR, NLR, and PLR in resectable PC and locally advanced or metastatic PC were different. FAR showed the most prognostic power in locally advanced or metastatic PC. Low FAR was positively correlated with OS in locally advanced or metastatic PC, which could be used to predict the prognosis.