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Preparation of a Novel Highly Effective and Environmental Friendly Wheat Seed Coating Agent

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Agricultural Sciences in China 2010年第7期9卷 937-941页

作者： ZENG de-fang WANG Hong School of Resource and Environmental Engineering Wuhan University of Technology Wuhan 430070 PR. China

A novel environmental friendly wheat seed coating agent was prepared from the natural polymer,biological pesticide,microfertilizer,microelements and other *** laboratory and field test results showed that it could enhance the yield up to 16% and reduce its input cost to 1/6 as compared with the conventional wheat seed coating *** is safe without causing any pollution and would have significant economic and environmental benefits.

关键词： wheat seed coating agent polysaccharide sprouting tendency germination rate bacteriostatic ratio field experiment

Small-Scale Brightenings in the UV Continuum of an M9.1 Solar Flare

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Chinese Journal of Astronomy and Astrophysics 2007年第5期7卷 721-732页

作者： Lin Wang Cheng fang Ming-de Ding department of Astronomy Nanjing University Nanjing 210093

We analyze an M9.1 two-ribbon solar flare which occurred on 2004 July 22 using the TRACE white-light and 1700 A images, the RHESSI, and the SOHO/MDI data. We find many small-scale fast-varying brightenings that appeared in the white-light and 1700 A images along the flare ribbons. Some of them underwent rapid motions in weak magnetic field regions. We identify these short-lived brightenings as UV continuum enhancement. Our preliminary result shows that the brightenings are closely related to the HXR emission. They have a lifetime of 30-60 s and a typical size of about 1＂-2＂. The intensity enhancement is about 150-200 times the mean value of the quiet-Sun. According to previous works, we infer that the 1700A enhancement may be dominated by the increased emission of 1680A continuum coming from the temperature minimum region. The impulsive feature in the 1700 A light curves of the small-scale brightenings may be due to the irradiation of the impulsive CIv line intensity caused by the bombardment of non-thermal electron beams.

关键词： Sun activity -- Sun flares -- Sun UV radiation

The north-south asymmetry of solar filaments separately at low and high latitudes in solar cycle 23

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Research in Astronomy and Astrophysics 2015年第1期15卷 77-84页

作者： de-fang Kong Zhi-Ning Qu Qiao-Ling Guo Yunnan Observatories Chinese Academy of Sciences University of Chinese Academy of Sciences Key Laboratory of Solar Activity National Astronomical Observatories Chinese Academy of Sciences College of Mathematics Physics and Information Engineering Jiaxing University

We present the results of a study on the north-south asymmetry of solar filaments at low（〈50°） and high（〉60°） latitudes using daily filament numbers from January 1998 to November 2008（solar cycle 23）. It is found that the northern hemisphere is dominant at low latitudes for cycle 23. However, a similar asymmetry does not occur for solar filaments at high latitudes. The present study indicates that the hemispheric asymmetry of solar filaments at high latitudes in a cycle appears to have little connection with that at low latitudes. Our results support that the observed magnetic fields at high latitudes include two components： one comes from the emergence of the magnetic fields from the solar interior and the other comes from the drift of the magnetic activity at low latitudes.

关键词： Sun: activity Sun: filaments,prominences methods: data analysis

Anomalous Wave Energy deposition in the Beginning Phases of Wave Injection in JT-60U Lower Hybrid Current Drive Experiments

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Chinese Physics Letters 1999年第11期16卷 827-829页

作者： fang Yu-de Kenkichi USHIGUSA Takashi KONDOH Institute of Plasma Physics Chinese Academy of SciencesHefei 230031 JT-60U Experiment Division Naka Fusion Research EstablishmentJapan Atomic Energy Research InstituteNaka-MachiNaka-gunIbaraki-kenJapan

An anomalous phenomenon of wave energy deposition and its evolution were noticed in the beginning phases of lower hybrid wave injection in JT-60U experiments. It was found that the driven currents are always formed in the central region of the plasma column in the first several hundred milliseconds of the wave pulses, no matter what N|| spectrum of the waves is. Then the driven current profile will change to their normal situation gradually, which depends on N|| spectrum closely.

关键词： wave spectrum Wave

Effect of different acid anions on highly efficient Ce-based catalysts for selective catalytic reduction of NO with NH_(3)

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Frontiers of Chemical Science and Engineering 2023年第10期17卷 1399-1411页

作者： de fang Guanlin Huang Jingyi Yang Shengxing Pan Caihong Lv Da Li Center for Materials Research and Analysis Wuhan University of TechnologyWuhan 430070China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China School of Printing&Packaging Wuhan UniversityWuhan 430072China College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 256600China

Three kinds of Ce-based catalysts(CePO_(4),CeVO_(4),Ce_(2)(SO_(4))_(3))were synthesized and used for the selective catalytic reduction(SCR)of NO by NH_(3).NH_(3)-SCR performances were conducted in the temperature range of 80 to 400°*** catalytic efficiencies of the three catalysts are as follow:CePO_(4)>CeVO_(4)>Ce_(2)(SO_(4))_(3),which is in agreement with their abilities of NH_(3)adsorption *** highest NO conversion rate of CePO_(4)could reach about 95%,and the catalyst had more than 90%NO conversion rate between 260 and 320°*** effect of PO_(4)^(3–),VO_(4)^(3–)and SO_(4)^(2–)on NH_(3)-SCR performances of Ce-based catalysts was systematically investigated by the X-ray photoelectron spectroscopy analysis,NH_(3)temperature programmed desorption,H2 temperature programmed reduction and field emission scanning electron microscopy *** key factors that can enhance the SCR are the existence of Ce4+,large NH_(3)adsorption capacity,high and early H2 consumptions,and suitable microstructures for gas ***,CePO_(4)and CeVO_(4)catalysts also exhibited relatively strong tolerance of SO2,and the upward trend about 8%was detected due to the sulfation enhancement by SO2 for Ce_(2)(SO_(4))3.

关键词： CePO_(4) CeVO_(4) Ce_(2)(SO_(4))_(3) selective catalytic reduction NO removal

Dynamics of novel insecticide HNPC-A9908 residue in vegetable-field ecosystem

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Journal of Environmental Sciences 2006年第6期18卷 1041-1042页

作者： OU Xiao-ming YU Shu-ying FAN de-fang WANG Xiao-guang Institute of Pesticide Formulations and Application Systems Hunan Research Institute of Chemical Industry National Engineering and Technology Research Center for Agrochemicals Changsha 410007 China Institute of Pesticide and Environmental Toxicology Zhejiang University Hangzhou 310029 China

HNPC-A9908 （o-（3-phenoxybenzyl）-2-methylthio-1-（4-chlorophenyl） propyl ketone oxime）, a novel oxime insecticide, is a highly effective and broad-spectrum insecticide which can be widely used to control many species of foliar insects on various crops. A study was conducted to evaluate the fate of HNPC-A9908 and study the degradation dynamics of HNPC-A9908 residue in vegetable field ecosystem. The results showed that degradation of HNPC-A9908 was much faster in vegetable pakchoi than in soil, and its half-life in pakchoi and soil was 1.32 and 3.75 d, respectively. The final residue of HNPC-A9908 in pakchoi was at the undetectable level to 0.122 mg/kg. As a conclusion, a dosage of 90 g/hm^2 was suggested and considered to be safe to human beings and animals.

关键词： oxime insecticide HNPC-A9908 residue degradation pakchoi soil

Study on electrochemical fingerprints of different Chrysanthemums by using B-Z oscillation system

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Chinese Chemical Letters 2011年第6期22卷 729-732页

作者： Wang Xing Chen Jia Chen Cheng Wu fang de Ling Wu School of Pharmacy Anhui University of Traditional Chinese Medicine Anhui Key Laboratory of Modern Traditional Chinese Medicine Hefei 230031 China

A sensitive and convenient method for the study of electrochemical fingerprints of Chrysanthemums from different regions is studied by Belousov-Zhabotinskii（B-Z） oscillation system with malonate as a dissipative *** results indicated that the electrochemical fingerprints of Chrysanthemums from different regions show significantly different characteristics,and can be used to identify the regions of Chrysanthemums.

关键词： Chrysanthemum Electrochemical fingerprint B-Z oscillation Different regions Identify

Calibration of Binding Energy Positions with C1s for XPS Results

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Journal of Wuhan University of Technology(Materials Science) 2020年第4期35卷 711-718页

作者： fang de HE Feng XIE Junlin XUE Lihui State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China Center for Materials Research and Analysis Wuhan University of TechnologyWuhan 430070China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China

The adventitious carbon located at 284.8 eV was used to calibrate samples without the carbon *** the carbon is as a major part of the inorganic material,the adventitious carbon should be identified and used as the *** is no adventitious carbon on the surfaces of the polymer materials,so using C1s of the carbon in the polymer itself to calibrate the charging effect is ***,compared with gold and argon,a more practical and convenient method based on C1s is proposed to get the right positions for binding energy peaks.

关键词： XPS calibration charging effect binding energy C1s

Electrochemical oxidation behavior of hydroxypivalaldehyde in the ionic liquids

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Chinese Chemical Letters 2008年第3期19卷 319-323页

作者： Jian fang Zhong de Liang He Zhou Zhou Yi Bin Xu State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical Engineering Hunan University Changsha 410082 China

The similar electrochemical oxidation behaviors of hydroxypivalaldehyde in ionic liquids （ILs） medium, C4MIMPF6, C4MIMBF4 and CsMIMPF6, are investigated using classic electrochemical methods, respectively. Only the product, hydroxypivalic acid is detected by high performance liquid chromatography （HPLC）. It can be conferred that the electrochemical oxidation of hydroxypivalaldehyde consists of two successive one-electron irreversible reactions at glass carbon （GC） electrode and the possible reaction mechanism in the ILs is proposed firstly. The diffusion coefficients of hydroxypivalaldehyde are obtained according to the electrochemical characteristics of hydroxypivalaldehyde in C4MIMPF6, C4MIMBF4 and CsMIMPF6.

关键词： Hydroxypivalaldehyde ILs Cyclic voltammetry Chronocoulometry