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11篇 您的检索式:作者名="ZHENG Zhixi"
    题名 作者 年代 出处 被引量
1Saline soil enzyme activities of four plant communities in Sangong River basin of Xinjiang,China显示文摘Soil enzyme activity plays an important role in the conversion of soil organic carbon into inorganic carbon,which is significant for the global carbon cycle.In this study,we investigated the soil enzyme activities of two ligninolytic enzymes(peroxidase and polyphenol oxidase)and five non-ligninolytic enzymes(α-1,4-glucosidase(AG);β-1,4-glucosidase(BG);N-acetyl-β-glucosaminidase(NAG);β-D-cellobiosidase(CBH);andβ-xylosidase(BXYL))in four plant communities of the Sangong River basin in Fukang,North Xinjiang,China.The four typical plant communities were dominated by Haloxylon ammodendron,Reaumuria soongonica,Salsola passerina,and Tamarix rarmosissima,respectively,with saline soils of varied alkalinity.The results showed that the soil peroxidase activity decreased seasonally.The activities of the five non-ligninolytic enzymes decreased with increasing soil depths,while those of the two ligninolytic enzymes did not show such a trend.In the four plant communities,BG had the highest activity among the five non-ligninolytic enzymes,and the activities of the two ligninolytic enzymes were higher than those of the four non-ligninolytic ones(AG,NAG,CBH,and BXYL).The community of H.ammodendron displayed the highest activity with respect to the two ligninolytic enzymes in most cases,but no significant differences were found among the four plant communities.The geometric mean of soil enzyme activities of the four plant communities was validated through an independently performed principal component analysis(PCA),which indicated that different plant communities had different soil enzyme activities.The correlation analysis showed that soil polyphenol oxidase activity was significantly positively correlated with the activities of the five non-ligninolytic enzymes.The soil pH value was positively correlated with the activities of all soil enzymes except peroxidase.Soil microbial carbon content also showed a significant positive correlation(P<0.01)with the activities of all soil enzymes except polyphenol oxidase.The results suggested that the H.ammodendron community has the highest ability to utilize soil organic carbon,and glucoside could be the most extensively utilized non-ligninolytic carbon source in the saline soil of arid areas in Xinjiang.ZhengJun GUAN Qian LUO Xi CHEN XianWei FENG ZhiXi TANG Wei WEI YuanRun ZHENG 2014Journal of Arid Land2014,6,2:11
2An efficient methodology for utilization of K-feldspar and phosphogypsum with reduced energy consumption and CO2 emissions显示文摘The issues of reducing CO_2 emissions, sustainably utilizing natural mineral resources, and dealing with industrial waste offer challenges for sustainable development in energy and the environment. We propose an efficient methodology via the co-reaction of K-feldspar and phosphogypsum for the extraction of soluble potassium salts and recovery of SO_2 with reduced CO_2 emission and energy consumption. The results of characterization and reactivity evaluation indicated that the partial melting of K-feldspar and phosphogypsum in the hightemperature co-reaction significantly facilitated the reduction of phosphogypsum to SO_2 and the exchange of K^+(K-feldspar) with Ca^(2+)(CaSO_4 in phosphogypsum). The reaction parameters were systematically investigated with the highest sulfur recovery ratio of ~ 60% and K extraction ratio of ~ 87.7%. This novel methodology possesses an energy consumption reduction of ~ 28% and CO_2 emission reduction of ~ 55% comparing with the present typical commercial technologies for utilization of K-feldspar and the treatment of phosphogypsum.Zhixi Gan Zheng Cui Hairong Yue Siyang Tang Changjun Liu Chun Li Bin Liang Heping Xie 2016Chinese Journal of Chemical Engineering2016,24,11:11
3Genomics progress will facilitate molecular breeding in soybean显示文摘It has been suggested that the soybean(Glycine max[L.]Merr.)currently cultivated in commercial agriculture was domesticated from the wild soybean(G.soja Sieb.&Zucc.)in China approximately 5,000 years ago.Because of its high protein and oil content,cultivated soybean has become a major economic crop by providing 69%and 30%of the world’s plant protein and oil.Soybean breeders haveWANG Zheng TIAN ZhiXi 2015Science China(Life Sciences)2015,58,8:8
4Cloning of Ln Gene Through Combined Approach of Map-based Cloning and Association Study in Soybean显示文摘Increasing yield is one of the most important goals in crop breeding.Soybean(Glycine max L.Merr.),one of the most economically important leguminous seed crops,provides the majority of plant proteins,and more than a quarter of the world's food and animal feed(Graham and Vance,2003). The yield of soybean is finally determined by the number of seeds per unit area,which affected by many characters,such as height,branching number,photosynthesis,seed size,seed number.The number of seeds per pod is taken for one of the critical components that related to yield(You et al.,1995),and it has long been considered in soybean production(Takahashi,Chao Fang Weiyu Li Guiquan Li Zheng Wang Zhengkui Zhou Yanming Ma Yanting Shen Congcong Li Yunshuai Wu Baoge Zhu Weicai Yang Zhixi Tian 2013Journal of Genetics and Genomics2013,40,2:7
5Update soybean Zhonghuang 13 genome to a golden reference显示文摘Dear Editor,Soybean is one of the most important crops worldwide.A high-quality reference genome will facilitate its functional analysis and molecular breeding (Wang and Tian,2015).Previously,we de novo assembled a high-quality Chinese soybean genome Gmax_ZH13 (Shen et al.,2018,Yang and Huang,2018).However,due to technical limitations at the time when we generated Gmax_ZH13,a large number of small contigs were not anchored onto chromosomes.Therefore,we here build a new golden reference genome for Zhonghuang 13 consisting of 20 nearly complete chromosomes by adding more single-molecule real time (SMRT) sequencing reads.Furthermore,we add large RNA-seq and smRNA-seq datasets for improving the annotation of its protein coding genes.Yanting Shen Huilong Du Yucheng Liu Lingbin Ni Zheng Wang Chengzhi Liang Zhixi Tian 2019Science China(Life Sciences)2019,62,9:6
6Impact of immunization programs on 11 childhood vaccine-preventable diseases in China: 1950–2018显示文摘To evaluate the achievements of China’s immunization program between 1950 and 2018,we chose 11 vaccine-preventable diseases(VPDs)as representative notifiable diseases and used annual surveillance data obtained between 1950 and 2018 to derive disease incidence and mortality trends.Quasi-Poisson and polynomial regression models were used to estimate the impacts of specific vaccine programs,and life-table methods were used to calculate the loss of life expectancy,years of life lost,and loss of working years.The total notification number for the 11 VPDs was 211,866,000 from 1950 to 2018.The greatest number occurred in 1959,with a total incidence of 1,723 per million persons.From 1978 to 2018,a substantial decline was observed in the incidence of major infectious diseases.The incidence of pertussis fell 98%from 126.35 to 1.58 per million,and the incidences of measles,meningococcal meningitis,and Japanese encephalitis fell 99%,99%,and 98%,respectively.The regression models showed that most of the 11 diseases exhibited dramatic declines in morbidity after their integration into the Expanded Program on Immunization(EPI),while varicella and paratyphoid fever,which were not integrated into the EPI,showed increased morbidity.From 1978 to 2018,the total life expectancy for the 11 VPDs increased by 0.79 years,and similar results were obtained for different age groups.China has had great success in controlling VPDs in recent decades,and improving vaccination coverage is a key aspect of controlling VPDs in China.Jinhua Pan Yesheng Wang Lingsheng Cao Ying Wang Qi Zhao Shenglan Tang Wenfeng Gong Lei Guo Zhixi Liu Zexuan Wen Bo Zheng Weibing Wang 2021The Innovation2021,2,2:2
7Control of fibrosis and hypertrophic scar formation via glycolysis regulation with IR780显示文摘Background:Hypertrophic scars(HS)represent one of the most common clinical challenges due to unsatisfactory therapeutic results.HS formation is associated with the abnormal activation of fibroblasts and their excessive fibrotic behavior.Glycolysis dysregulation has been shown to participate in the incidence and progression of various fibrotic diseases and shows potential as a means of controlling HS formation.This work aimed to discuss the impact of augmented glycolysis on HS and to propose a method for controlling HS formation through glycolysis regulation.Methods:Here,augmented glycolysis was confirmed together with enhanced fibrotic activity in both HS fibroblasts(HFs)and HS tissues,and the suppression of glycolysis also attenuated fibroblast activation.We also introduced IR780,a heptamethine cyanine dye,to regulate glycolysis for the control of HS formation.Results:In vitro,cell studies indicated that IR780 significantly down-regulated glycolysis and suppressed the fibrotic activity of HFs.In vivo,the intralesional injection of IR780 into rabbit HS models led to the downregulation of glycolysis and the control of HS formation.Furthermore,IR780 accumulated preferentially in activated fibroblasts in both in vitro and in vivo studies,and thus specifically downregulated glycolysis and efficiently controlled fibrosis by targeting activated fibroblasts.Conclusions:This work identified a strategy for controlling fibrosis and HS formation from the perspective of glycolysis regulation with IR780 targeting of activated fibroblasts.Xinxian Meng Zhixi Yu Wanyu Xu Jun Chai Shuo Fang Peiru Min Yunsheng Chen Yixin Zhang Zheng Zhang 2022Burns & Trauma2022,10,1:2
8Multiple Excitation Wavelength Fluorescence Emission Spectra Technique for Discrimination of Phytoplankton显示文摘In vivo fluorescence methods are efficient tools for studying the distribution of phytoplankton in nature.Different algae species usually have different pigments with different ratios,which results in different fluorescence emission spectra.Based on multiple excitation wavelength fluorescence emission spectra,a discrimination technique is established in this study.The discrimination method,established by multivariate linear regression and weighted least-squares,was used to differentiate the samples cultured in the laboratory and collected from Jiaozhou Bay near Qingdao at the division level.The correctly discriminated samples were ≥ 86% for single algae samples,≥ 88% for simulatively mixed ones,≥ 91% for physically mixed ones and 100% for samples collected from Jiaozhou Bay.The result in this research is more definite for the physically mixed samples in the laboratory.The method described here can be employed to monitor the phytoplankton population in the marine environment.HU Xupeng SU Rongguo ZHANG Fang WANG Xiulin WANG Hongtao ZHENG Zhixi 2010Journal of Ocean University of China2010,9,1:0
9Chloroplast DNA Underwent Independent Selection from Nuclear Genes during Soybean Domestication and Improvement显示文摘The chloroplast is one of the most important organs in plants because of its essential role in photosynthesis.Studies have shown that the chloroplast was once a free-living cyanobacteria and was integrated into the host species through endosymbiosis(Goksoyr.1967).after which a large number of its genes had been donated to the host nuclear genome(HeinsChao Fang Yanming Ma Lichai Yuan Zheng Wang Rui Yang Zhengkui Zhou Tengfei Liu Zhixi Tian 2016Journal of Genetics and Genomics2016,43,4:0
10Dynamically modulated synthesis of hollow metal-organic frameworks for selective hydrogenation reactions显示文摘Hollow metal-organic frameworks(MOFs)have attracted increasing attention in the field of catalysis in recent years due to their unique cavity structure with fast mass-diffusion rates and easily accessible active sites.Here,we report the use of dynamic modulators,which are formed by the in-situ imine condensation reaction of 4-aminobenzoic acid and 4-formylbenzoic acid,to regulate the growth of MOFs to synthesize well-defined hollow thioether functionalized UiO-67(denoted as H-UiO-67-S)single crystals.After supporting Pd nanoparticles,the designed catalysts Pd@H-UiO-67-S show excellent conversion(>99.9%),selectivity(>99.9%),and stability(10 cycles)in the selective hydrogenation of nitrobenzenes with other reducible groups.Density functional theory calculations and the experimental results reveal that Pd nanoparticles not only selectively adsorb the nitro-groups on nitrobenzene,but also restrict the adsorption of the aniline product,due to the interaction of thioether with Pd in the confined pores of H-UiO-67-S,finally result in a significant increase in selectivity of nitro-hydrogenation.Liyun Xiao Chuanqi Cheng Zhixi Li Chaoyang Zheng Jing Du Meina Song Yue Wan Shaopeng Li Guo Jun Meiting Zhao 2023Nano Research2023,16,8:0
11Localized surface plasmon resonance improves transdermal photodynamic therapy of hypertrophic scars显示文摘Photodynamic therapy(PDT)is an emerging therapeutic strategy for hypertrophic scars(HS),which is heavily dependent on reactive oxygen species(ROS)generation.However,the unsatisfactory delivery and excitation of 5-aminolevulinic acid(ALA,a commercial photosensitizer in dermatology)result in an insufficient ROS generation,and thus limit the clinical application of PDT treating HS(HS-PDT).Consequently,sophisticated transdermal co-delivery nanoethosomes(named A/A-ES)with ALA and Au nanotriangles(AuNTs)in cores are prepared via an in-situ seed-mediated growth method,and then applied to improve HS-PDT through localized surface plasmon resonance(LSPR)-enhanced ROS generation.A/A-ES display a satisfactory performance in co-delivery in HS tissue with sufficient protoporphyrin IX production and LSPR effect in cytoplasm,which is beneficial for ALA excitation as well as ROS generation.In vitrolvivo studies reveal that A/A-ES significantly improve HS-PDT in promoting to fibroblast apoptosis and collagen remodeling through LSPR-enhanced ROS generation.Therefore,this study provides a feasible strategy that integrates transdermal delivery and LSPR to enable the beneficial effects of HS-PDT through boosting the delivery and excitation of ALA.Yunsheng Chen Zhixi Yu Xinxian Meng Hua Li Xiyang Sun Dannong He Yixin Zhang Zheng Zhang 2022Nano Research2022,15,5:0
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