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| 1 | Removal of aqueous phenol compound by vacuum membrane distillation显示文摘The effects of feed temperature and pH value on the removal of aqueous phenol wastewater by vacuum membrane distillation process are studied by experiments employing micro porous membranes of poly vinylidene fluoride (PVDF) and ploy tetrafluoro ethylene (PTFE) with nominal average pore sizes 0.22 mm and 0.20 mm, respectively. It is found that the optimal feed temperature for PVDF membrane is 50 ℃; and for PTFE membrane, 60 ℃. The pH value of the feed has little influence on the membrane fluxes and ion rejection ratios, while it influenced considerably on the selectivity. Increase of pH value of the feed is conducive to the increase of selectivity. In the same experimental conditions, PTFE membrane shows better separation performance than PVDF membrane does. | LIUZuohua LIURenlong DUJun TAOChangyuan LIXiaohong | 2004 | Journal of Chongqing University2004，3，1： | 6 |
| 2 | Magnetic properties of different grain-sized particles of sediments from the Okinawa Trough and their relationships to sedimentary environment显示文摘Multiple magnetic parameters were measured for nine different grain-sized fractions separated from the sediment samples that are representatives of four different sedimentary environments of the Okinawa Trough. Based on the measured results, the contributions of different grain-sized particles to total magnetic susceptibility of bulk sediments, the magnetic mineral assemblage and magnetic domain state as well as their relationships to sedimentary environment were discussed. Our research shows that the magnetic mineral is dominated by magnetite with a small amount of hematite and is primarily in pseudo-single-domain state. That indicates that the different sedimentary environ- ments in the Okinawa Trough have certain correlation in material provenance. The magnetic minerals enrich in dif- ferent grain-sized particles in response to different sedimen- tary environments. The contribution of the grain sizes from coarse to fine to coarse and fine to the magnetic susceptibility from the west to the east is in accordance with terrigenous material transportation from continental shelf of the East China Sea to the Okinawa Trough. It also shows difference in magnetic properties as a result of some environmental fac- tors. | LIPing LIPeiying ZHANGXiaolong CAOChengxiao XUXingyong DUJun LIULejun | 2005 | Chinese Science Bulletin2005，50，7： | 4 |
| 3 | Evaluating the therapeutic effect of hepatocellular carcinoma treated with transcatheter arterial chemoembolization by magnetic resonance perfusion imaging显示文摘 | Xiangyu Chen Enhua Xiao Dianshuang Shu Chengzhi Yang Bin Liang Zhong He Dujun Bian | 2014 | European Journal of Gastroenterology & Hepatology2014，，1： | 1 |
| 4 | Design and simulation of reverse-blocking Schottky-drain AlN/AlGaN HEMTs with drain field plate显示文摘In this paper,Schottky-drain reverse-blocking Al N/Al Ga N HEMTs with drain field plate(FP)have been investigated by Silvaco-ATLAS tools.For HEMTs without FP,with the increase of Al mole fraction in Al Ga N channel from 0 to 0.5,the reverse-blocking voltage increases from-158 V to-720 V.By using the drain field plate technique,a second electric field peak is introduced and the reverse-blocking voltage can be improved.Combined with the optimization of the Si N passivation thickness,optimal electric field management can be achieved to obtain the highest reverse-blocking voltage devices.Since HEMTs with different Al mole fractions possess different critical electric field values,the optimal Si N thickness are varied.With the increase of the Al mole fraction from 0 to 0.5,the reverse-blocking voltage increases from-510 V to-4500 V for HEMTs using drain FP and optimal Si N passivation thickness,and a high power figure-of-merit of 1.171 GW/cm^(2)is achieved.Al Ga N channel HEMTs with Al mole fraction demonstrate great potential for power applications. | Dujun ZHAO Zhaoxi WU Chao DUAN Bo MEI Zhongyang LI Zhongxu WANG Qing TANG Qing YANG Yinhe WU Weihang ZHANG Zhihong LIU Shenglei ZHAO Jincheng ZHANG Yue HAO | 2022 | Science China(Information Sciences)2022，65，2： | 1 |
| 5 | Rice transcription factors OsLBD37/38/39 regulate nitrate uptake by repressing OsNRT2.1/2.2/2.3 under high-nitrogen conditions显示文摘Nitrate(NO_(3)^(-)) uptake involves a finely regulated and complex multilevel response system.Elucidating the molecular mechanism of nitrate uptake may lead to improving the growth and productivity of plants in the presence of dynamic variation in nitrate concentration.In this study,we identified three lateral organ boundaries domain(LBD)transcription factors,OsLBD37,OsLBD38,and OsLBD39,as regulators of nitrate uptake in response to nitrogen(N)availability.OsLBD37,OsLBD38,and OsLBD39 were induced by ammonium and glutamine in rice roots.Individual or collective knockout of OsLBD37,OsLBD38,and OsLBD39 led to increased concentrations of nitrate and increased expression of OsNRT2.1,OsNRT2.2,and OsNRT2.3respectively under high-N conditions,whereas overexpression of each of these three LBD genes produced opposite effects where N accumulation was reduced.Dual-luciferase reporter assay further confirmed that OsLBD37,OsLBD38,and OsLBD39 possessed transcription inhibitory activities in rice protoplast cells,downregulating the expression of OsNRT2.1/OsNRT2.2/OsNRT2.3.Yeast two-hybrid and bimolecular fluorescence complementation assays showed that OsLBD37 interacted with OsLBD37,OsLBD38,and OsLBD39in the nucleus.Together,these results show that OsLBD37,OsLBD38,and OsLBD39 collaborate to inhibit the expression of OsNRT2.1/OsNRT2.2/OsNRT2.3 transporters under N-sufficient conditions,thereby helping rice plants avoid excessive nitrate accumulation that may affect their growth. | Xinxin Zhu Dujun Wang Lijuan Xie Tao Zhou Jingyi Zhao Qian Zhang Meng Yang Wenjuan Wu Xingming Lian | 2022 | The Crop Journal2022，10，6： | 0 |
| 6 | ITERATIVE QUASI-LIKELIHOOD FOR SEEMINGLY UNRELATED REGRESSION SYSTEMS显示文摘In the seemingly unrelated regression systems, the existing quasi-likelihood is always involved in the difficult problem of calculating inverse of a high order matrix specially for large systems. To avoid this problem, the new quasi-likelihood proposed in this paper is based mainly on a linearly iterative process of some unbiased estimating functions.Some finite sample properties and asymptotic behaviours for this new quasi-likelihood are investigated. These results show that the new quasi-likelihood for parameter of interest is E-sufficient, iteratively efficient and approximately efficient. Some examples are given to illustrate the theoretical results. | LINLU FANYUNZHENG DUJUN YUANYUAN | 2005 | Chinese Annals of Mathematics,Series B2005，26，3： | 0 |
| 7 | Effect of light and nutrients on interspecific interactions between submerged macrophytes:implications for restoration of multispecies aquatic vegetation in eutrophic lakes显示文摘Constructing multispecies submerged vegetation systems and maintaining stable seasonal succession is crucial for restoring shallow eutrophic lakes.However,little is known about the interactions between successional and existing species of different growth forms,particularly under the low light and high nutrient conditions of eutrophic lakes.We measured the functional traits of mature Vallisneria natans(Lour.)Hara plants and Potamogeton crispus L.shoots in monoculture and mosaic patterns under different light and nutrient conditions.The effect of light on functional traits of the submerged macrophyte species was more significant than that of nutrients,but the reverse was true for P.crispus biomass allocation.Moreover,interspecific interactions affected only the submerged macrophytes under the low light condition and varied with species.Specifically,the interaction of P.crispus to V.natans was biased towards competition,while the interaction of V.natans to P.crispus was converted from facilitation to competition by eutrophication,particularly in the homogenous mosaic growth pattern.This study demonstrates that sufficient light is a prerequisite and patch planting is an effective means to form a multispecies submerged vegetation system.In addition,we emphasize that the coexistence of eutrophication and low light will likely result in a competition between submerged macrophytes thus simplifying the vegetation,even if their growth forms and growing seasons are different.These findings help explain the collapse of multispecies submerged vegetation and guide the restoration of aquatic plants in eutrophic lakes. | Yiping WANG Xiaoguang XU Dujun LI Yongjun LU Xinhou ZHANG Chuyao YANG Qiu JIN Guoxiang WANG | 2023 | Journal of Oceanology and Limnology2023，41，5： | 0 |
| 8 | Palaeoclimatic evolution recorded by multidicipline in sediments in gahai lake, qaidam basin since late last deglacial显示文摘 | Chen Zhong Ma Haizhou Cao Guangchao Zhang Xiying Zhou Dujun Yao Yuan Yang Guangshu | 2010 | High Technology Letters2010，16，3： | 0 |
| 9 | Natural variations of OsAUX5,a target gene of OsWRKY78,control the neutral essential amino acid content in rice grains显示文摘Grain essential amino acid(EAA)levels contribute to rice nutritional quality.However,the molecular mechanisms underlying EAA accumulation and natural variation in rice grains remain unclear.Here we report the identification of a previously unrecognized auxin influx carrier subfamily gene,OsAUX5,which encodes an amino acid transporter that functions in uptake of multiple amino acids.We identified an elite haplotype of Pro::OsAUX5^(Hap2) that enhances grain EAA accumulation without an apparent negative effect on agronomic traits.Natural variations of OsAUX5 occur in the cis elements of its promoter,which are differentially activated because of the different binding affinity between OsWRKY78 and the W-box,contributing to grain EAA variation among rice varieties.The two distinct haplotypes were shown to have originated from different Oryza rufipogon progenitors,which contributed to the divergence between japonica and indica.Introduction of the indica-type Pro::OsAUX5^(Hap2) genotype into japonica could significantly increase EAA levels,indicating that indica-type Pro::OsAUX5^(Hap2) can be utilized to increase grain EAAs of japonica varieties.Collectively,our study uncovers an WRKY78–OsAUX5-based regulatory mechanism controlling grain EAA accumulation and provides a potential target for breeding EAA-rich rice. | Yuheng Shi Yuanyuan Zhang Yangyang Sun Ziyang Xie Yu Luo Qiyuan Long Jiahui Feng Xueqing Liu Bi Wang Dujun He Junxia Ren Peizhen Guo Junwei Xing Liqiang He Alisdair RFernie Wei Chen Xianqing Liu Yuehua Luo Cheng Jin Jie Luo | 2023 | Molecular Plant2023，16，2： | 0 |
| 10 | Investigation of heavy ion irradiation effects on 650-V p-GaN normally-off HEMTs显示文摘In this study,we investigate heavy ion irradiation effects on commercial 650 V p-GaN normallyoff HEMTs.Ge and Cl ions are used to irradiate the GaN devices in the experiments.Ge and Cl ion beam irradiation have little impact on the output characteristics of GaN devices.After heavy ion irradiation,the leakage currents between source and drain electrodes increase significantly under off-state,decreasing the breakdown voltage(BVDS)sharply.Additionally,Ge and Cl ion irradiation have little effect on the trap states under the gate electrode;thus,the gate leakage currents increase slightly.Many line-shaped crystal defects extending from the surface to the GaN buffer layer can be captured using a transmission electron microscope after Ge/Cl ion irradiation.The buffer layers of the irradiated devices were damaged,and the leakage path was generated in the buffer layer.Defect percolation process in buffer layer is the dominant factor of irradiated high-voltage GaN device failure. | Yinhe WU Jincheng ZHANG Shenglei ZHAO Zhaoxi WU Zhongxu WANG Bo MEI Chao DUAN Dujun ZHAO Weihang ZHANG Zhihong LIU Yue HAO | 2022 | Science China(Information Sciences)2022，65，8： | 0 |
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