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Search Results: 1 - 10 of 22860 matches for " Zetian Hua "
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Analysis of Volatile Compounds and Identification of Characteristic Aroma Components of Toona sinensis (A. Juss.) Roem. Using GC-MS and GC-O  [PDF]
Changjin Liu, Jie Zhang, Zhongkai Zhou, Zetian Hua, Hongying Wan, Yanhui Xie, Zhiwei Wang, Li Deng
Food and Nutrition Sciences (FNS) , 2013, DOI: 10.4236/fns.2013.43041

In this study, volatile compounds present in Toona sinensis (A. Juss.) Roem (TS) were investigated and their characteristic aromatic components were identified using Headspace Solid-phase Microextraction (HS-SPME) followed by Gas Chromatography-Mass Spectrometry (GC-MS) and Gas Chromatography-Olfactometry (GC-O). The optimum conditions for extracting the volatiles from TS were achieved with the experimental parameters including the use of a 65 μm polydimethylsiloxane/divinyl benzene (PDMS/DVB) fibre, an extraction temperature of 40 and an extraction time of 30 min. Under these conditions, 56 volatile compounds were separated and 53 were identified by GC-MS. Among them, 21 sulfide compounds (42.146%) and 27 terpenes55.984%) were found to be the major components. The sample was analyzed by GC-O and 26 elutes were sniffed and their sensory descriptions evaluated by an odor panelists. Analysis of the data indicated, two compounds cis and trans isomers of 2-Mercapto-3,4-dimethyl-2,3-dihydrothiophene were major contributors to the characteristic aroma of TS.

Antioxidant Capacities and Main Reducing Substance Contents in 110 Fruits and Vegetables Eaten in China  [PDF]
Changjin Liu, Yanli Zhao, Xiaojing Li, Jianying Jia, Yanya Chen, Zetian Hua
Food and Nutrition Sciences (FNS) , 2014, DOI: 10.4236/fns.2014.54036

The aim of this study was to screen strongly-antioxidant fruits and vegetables and supply practical diet guidance for the public. We used 1,1-diphenyl-2-picrylhydrazyl (DPPH), ferric-reducing antioxidant potential (FRAP), 2,2’-azino-bis-3-ethylbenzthiazoline-6-sulphonic acid (ABTS) and total reducing power (TRP) assays to investigate antioxidant activities in 110 fruits and vegetables. To analyze the correlation between antioxidant capacities and main reducing substance contents, total phenolic, flavonoid and vitamin C contents were assessed. The results showed great variation in antioxidant activity, and fifteen fruits and vegetables possessed the strongest antioxidant capacities: Toona sinensis, hawthorn, jujube, lotus root, persimmon, red plum, black plum, chilli pepper, star fruit, strawberry, blueberry, cherry, peach, pomegranate and great burdock. Total phenolic contents showed higher correlation with antioxidant capacity when using FRAP and TRP assays than when using the DPPH or ABTS assay. Phenolics and flavonoids, rather than vitamin C, contributed to antioxidant potential in most fruits and vegetables.

Frequency Spectrum Zone Images and Their Applications

Ye Zetian,

遥感学报 , 1993,
Abstract: This paper describes the attempts to form frequency spectrum zone image. The image can preserve texture information corresponding to its object. Some preliminary experiments illustrate that the image is an useful data resource for remote sensing in the space.
Preliminary Effect of Cyberknife Radiosurgery in the Treatment of 31 Patients with Advanced Non-small Cell Lung Cancer
Yanling LV,Zhen WANG,Xixu ZHU,Zetian SHEN
Chinese Journal of Lung Cancer , 2011,
Abstract: Background and objective Recently, Cyberknife is a new flame-less stereotactic radiation therapy technology, which has several advantages, such as large dose, high precision and minimizing exposure to the surrounding normal tissue or adjacent vital structures, so it is successful in the treatment of non-small cell lung cancer (NSCLC). The aim of this study is to determine the effectiveness and safety of robotic stereotactic radiotherapy-Cyberknife with image guidance and realtime respiratory tracking against clinical stage III-IV peripheral NSCLC. Methods A review of treatment details and outcomes for 31 patients, with 34 tumors with histologically proven cancers treated by Cyberknife at the CyberKnife Center of Nanjing general hospital of Nanjing military command between March 2009 and March 2010 is presented. Of the 31patients, 15 were adenocarcinoma and 12 were squamous cell cancer. Twenty-eight patients received other forms of antineoplastic therapy such as chemotherapy. A total dose of 36 Gy-60 Gy was prescribed to the 65%-85% isodose line and given in two to five fractions in less than 1 week using the CyberKnife radiosurgery system. CT scans were performed after one-two months, then patients were followed every 3 months. Results Two patients had complete radiographic responses, 16 patients showed PRs, 7 patients showed SDs. Two patients showed PRs (reduction in tumor size), but developed distant metastases. Response rate was 58% and disease control rate was 81%. All patients tolerated the radiosurgery well, fatigue being the main side effect. No grade 4 or above toxicity was encountered. Conclusion In this small cohort of patients with advanced peripheral NSCLC, Cyberknife seems to be a safe and has good therapeutic effects with slight adverse reaction, but long time follow-up is necessary to evaluate the survival data and late toxicity.
Ionizing Radiation Reduces TKI Resistance Caused by T790M Mutation in NSCLC Cell Lines
Jing LI, Xinhu WU, Zhen WANG, Zetian SHEN, Ni SUN, Xixu ZHU
- , 2015, DOI: : 10.3779/j.issn.1009-3419.2015.08.02
Abstract: Background and objective Epidermal growth factor receptor-tyrosine kinase inhibitor (EGFR-TKI), which targets EGFR, plays an important role in non-small cell lung cancer (NSCLC) treatment. Patients with somatic activating mutations in the EGFR gene exhibit significant initial response but eventually develop resistance to TKI. The second mutation (T790M) of the EGFR gene is the possible main cause of drug resistance. The aim of this study is to investigate the effect of ionizing radiation on EGFR-TKI resistance caused by T790M mutation in NSCLC cell lines. Methods We selected H1975 and H3255 as research subjects and tested the mutation states by real-time PCR analysis. Radiosensitivity was determined by clone-forming test, and drug resistance was detected in different groups by MTT assay. Results H1975 is an EGFR double mutant (L858R plus T790M), whereas H3255 is an EGFR single mutant (L858R). The cell survival fractions of H1975 and H3255 did not vary in different treatment groups (P=0.952). Thus, T790M mutation did not affect the radiosensitivity of NSCLC cell lines. The IC50 of H1975 in the 2.5 Gy group [(0.678; 2±0.373) μmol/L] was statistically significant compared with that in the 0 Gy normal control group [(3.520±0.821) μmol/L] (P=0.008). The drug tolerance of the H1975 cell line by 89.5 dropped to 39.2 times. Conclusion Ionizing radiation can reduce TKI resistance caused by T790M mutation in NSCLC cell lines. Our results provide a research basis for future in vivo and clinical studies. Radiotherapy combined with EGFR-TKI treatment can be a promising strategy to overcome T790M-mediated drug resistance.
Treating Adrenal Tumors in 26 Patients with CyberKnife: A Mono-Institutional Experience
Jing Li, ZhaoRong Shi, Zhen Wang, Zhibing Liu, Xinhu Wu, Zetian Shen, Bing Li, Yong Song, Xixu Zhu
PLOS ONE , 2013, DOI: 10.1371/journal.pone.0080654
Abstract: Background CyberKnife (CK) is a novel stereotactic radiosurgery system for treating tumors in any part of the body. It is a non-invasive or minimally invasive tumor treatment modality that can deliver high doses of spatially precise radiation and minimize exposure to neighboring healthy tissues or vital organs. The purpose of this study was to investigate the safety and efficacy of CK in the treatment of adrenal tumors. Methods and Results We performed a retrospective analysis of 26 patients with adrenal tumors who had been treated with CK in the radiotherapy center of our hospital between March 2009 and March 2012. Eight patients had primary adrenal tumors and 18 patients had metastatic adrenal tumors. In addition to CK, 4 patients received chemotherapy and 2 patients received immunotherapy. The average tumor volume was 72.1 cm3 and the prescribed radiation dosage ranged from 30 to 50 Gy and was fractionated 3 to 5 times with a 58% to 80% isodose line. Abdominal CT was performed between 1 to 3 months after the CK treatment to evaluate the short-term efficacy with follow-up examinations once every 3 months. Three patients had complete remission, 12 patients had partial remission, 5 patients had stable disease, and 6 patients had progressive illness. The effective rate of pain relief was 93.8% and the disease control rate was 77% with a median overall survival of 17 months and a median progression-free survival of 14 months. Treatment Related toxicity was well-tolerated, but preventative measure need to be taken for radiation enteritis. Conclusions CK is safe and effective for treating adrenal tumors with few adverse reactions. Nonetheless, its long-term effects requires further follow-up.
McMillan-Rowell Oscillations in a Low Spin-Orbit SNS Semiconducting Junction
Binxin Wu,Chenxu Shao,Sherry Chu,B. Schmidt,M. Savard,Songrui Zhao,Zetian Mi,T. Szkopek,G. Gervais
Physics , 2013,
Abstract: The electronic transport properties of an SNS junction formed by an InN nanowire (N) and Al contacts (S) with a superconducting transition temperature T_c ~ 0.92 K were investigated. As a function of dc bias, superconducting quasiparticle transport resonance peaks at E=2\Delta were observed, in agreement with BCS theory with 2\Delta(T=0) \equiv \Delta_0=275\mueV. Several additional transport resonances scaling linearly in energy were observed at high-bias above 2\Delta, up to E\simeq 15\Delta_0, consistent with McMillan-Rowell oscillations. The persistence of McMillan-Rowell oscillations at high-bias and under applied magnetic field were investigated.
Effects of Indigenous Innovation Policy on the S & T Outputs in China Evidence from the Higher Education System  [PDF]
Hua Meng
Technology and Investment (TI) , 2011, DOI: 10.4236/ti.2011.23017
Abstract: This paper evaluated the effects of indigenous innovation policies changes in 1996 and 2002 on the S&T outputs in the Chinese higher education system. I used interrupted time series design with yearly measures of number of SCI articles, average citation per item in 5 years, number of invention patent application accepted and invention patent granted from 1980 to 2008. The results showed statistically significant increases in the four output measures after the 1996 and 2002 innovation policies were adopted by the Chinese universities. In terms of effect size, the increases were 133% and 82% in number of SCI articles and 41% and 37% in citation impact for the two policy changes. The effect sizes are more noteworthy with 177% and 202% increases in patent applied 146% and 256% increase in patent granted for the two policy changes. The results supported all hypotheses and are basically consisted with prior research done by other scholars. However, small size sample and no control group are the two limitations of this research and future research could consider about the possibility to combine time series data and cross-sector data.
Comment on the Invocation of Article XX for Violation of Para.11.3 in China—Raw Materials  [PDF]
Liu Hua
Beijing Law Review (BLR) , 2012, DOI: 10.4236/blr.2012.34021
Abstract: The failure to mention the relationship between China’s WTO-plus obligation in Paragraph 11.3 and the GATT 1994 does not mean the negotiators had meant to deny China the right to invoke Article XX of the GATT 1994. If that was the case, the intention would have been recorded in the Protocol and the Working Party Report. Contexts provided by the Working Party Report and provisions of the GATT 1994 and other provisions of the WTO Agreement prove that China cannot be denied the right to invoke Article XX. WTO-plus obligations are still integral parts of the WTO Agreement and the decision of the Panel and the AB in this case will lead to absurd results.
Symbolic Computation and New Exact Travelling Solutions for the (2+1)-Dimensional Zoomeron Equation  [PDF]
Hua Gao
International Journal of Modern Nonlinear Theory and Application (IJMNTA) , 2014, DOI: 10.4236/ijmnta.2014.32004

In this paper, we present Yan’s sine-cosine method and Wazwaz’s sine-cosine method to solve the (2+1)-dimensional Zoomeron equation. New exact travelling wave solutions are explicitly obtained with the aid of symbolic computation. The study confirms the power of the two schemes.

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