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Effect of cyclic drying and wetting on engineering properties of heavy metal contaminated soils solidified/stabilized with fly ash

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Journal of Central South University 2013年第7期20卷 1947-1952页

作者： zha Fu-sheng LIU jing-jing XU Long CUI Ke-rui Key Laboratory of geotechnical and Underground Engineering of Ministry of Education (Tongji University) Shanghai 200092 China School of Resource and Environmental Engineering Hefei University of Technology Hefei 230009 China

Solidification/stabilization （S/S） is one of the most effective methods of dealing with heavy metal contaminated soils. The effects of cyclic wetting and drying on solidified/stabilized contaminated soils were investigated. A series of test program, unconfined compressive strength （UCS） test, TCLP leaching test and scanning electron microscopy （SEM） test, were performed on lead and zinc contaminated soils solidified/stabilized by fly ash. Test results show that UCS and the leaching characteristics of heavy metal ions of S/S contaminated soils are significantly improved with the increase of fly ash content. UCS of S/S soils firstly increases with the increase of the times of drying and wetting cycles, after reaching the peak, it decreases with it. When the pollutant content is lower （1 000 mg/kg）, the TCLP concentration first slightly decreases under cyclic drying and wetting, then increases, but the change is minor. The TCLP concentration is higher under a high pollutant content of 5 000 mg/kg, and increases with the increase of the times of drying and wetting cycles. The results of scanning electron microscopy （SEM） test are consistent with UCS tests and TCLP leaching tests, which reveals the micro-mechanism of the variations of engineering properties of stabilized contaminated soils after drying and wetting cycles.

关键词： solidification/stabilization (S/S) heavy metal contaminated soil drying and wetting cycles long-term stability

Defect-Tolerant Mapping of CMOL Circuit Targeting Delay Optimization

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Journal of Computer Science & Technology 2021年第5期36卷 1118-1132页

作者： Xiao-jing zha Yin-Shui Xia Shang-Luan Xie Zhu-Fei Chu Faculty of Electrical Engineering and Computer Science Ningbo UniversityNingbo 315211China

In view of the significant number of defective nanodevices in the Cmos/nanowire/MOLecular hybrid(CMOL)circuit,defect-tolerant mapping is an essential step to achieve correct logic operations in defective CMOL ***,less effort has been made to improve circuit delay by defect-tolerant *** this paper,the factors affecting the delay of mapped circuits are analyzed,and the path-tree based defect-tolerant mapping method for the delay optimization is *** the logic-domain,the terminology of the path tree is presented,and the logic circuit is first partitioned into multiple path ***,the mapping areas in the physic-domain are pre-planned for(near)critical path *** the mapping process,the specific mapping modes and an updating strategy are formulated to map the path trees:inputs are mapped based on input sorting;(near)critical path trees are mapped with priority,while the others are mapped in a hierarchical ***,an improved tabu search algorithm is employed to verify the validity of the proposed defect-tolerant mapping *** evaluations on the ISCAS benchmarks show that the proposed method can reduce circuit delay by 15.22%.

关键词： nanohybrid circuit defect-tolerant mapping delay optimization

Differential temporal expression of matrix metalloproteinases following sciatic nerve crush

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Neural Regeneration Research 2016年第7期11卷 1165-1171页

作者： jing Qin guang-bin zha Jun Yu Hong-hong zha.g Sheng Yi Jiangsu Key Laboratory of Neuroregeneration Co-innovation Center of NeuroregenerationNantong University

We previously performed transcriptome sequencing and found that genes for matrix metalloproteinases（MMPs）,such as MMP7 and 12,seem to be highly upregulated following peripheral nerve injury,and may be involved in nerve *** the present study,we systematically determined the expression levels of MMPs and their regulators at 1,4,7 and 14 days after sciatic nerve crush *** number of differentially expressed genes was elevated at 4 and 7 days after injury,but decreased at 14 days after *** the differentially expressed genes,those most up-regulated showed fold changes of more than 214,while those most down-regulated exhibited fold changes of more than *** sequencing showed that,at all time points after injury,a variety of MMP genes in the “Inhibition of MMPs” pathway were up-regulated,and their inhibitor genes were *** of key up-and down-regulated genes was verified by quantitative real-time polymerase chain reaction analysis and found to be consistent with transcriptome *** results suggest that MMP-related genes are strongly involved in the process of peripheral nerve regeneration.

关键词： sequencing crush systematically regeneration verified repair TIMP differentially enriched degrade

Atomic tailoring-induced deficiency in tungsten oxides for high-performance energy-related devices

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Tungsten 2024年第2期6卷 269-277页

作者： jing-Huang Lin Yao-Tian Yan Jun-Lei Qi Chen-Yang zha Institute of Applied Physics and Materials Engineering Zhuhai UM Science and Technology Research InstituteUniversity of MacaoTaipaMacao SAR 999078China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150001China Jiangmen Laboratory of Carbon Science and Technology Hong Kong University of Science and Technology(Guangzhou)Jiangmen 529199China Key Laboratory of Flexible Electronics School of Flexible Electronics(Future Technologies)Institute of Advanced MaterialsNanjing Tech UniversityNanjing 211816China

Nowadays,tungsten oxides,as a typical transition metal oxide,are widely and intensively investigated owing to their excellent material properties and device *** oxygen defi ciency in tungsten oxides is typically the key to enhance their performances for a variety of critical technological *** a gradual increase of oxygen defi ciency,various non-stoichiometric tungsten oxides can be formed by re-adjustment of the atomic arrangement,which exhibits superior performances than their traditional stoichiometric *** review mainly focuses on the recent advances in oxygen-defi cient tungsten oxides from the point of atomic structures,including the forming mechanism of non-stoichiometric tungsten oxides and the superiority of these oxygen-defi cient tungsten oxides in energy-related ***,the challenge and perspective of oxygen-defi cient tungsten oxides are also discussed.

关键词： Oxygen defi ciency Tungsten oxide Atomic structures Catalyst Storage

Effects of heterogeneity distribution on hillslope stability during rainfalls

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Water Science and Engineering 2016年第2期9卷 134-144页

作者： jing-sen Cai E-chuan Yan Tian-chyi Jim Yeh Yuan-yuan zha Faculty of Engineering China University of Geosciences Department of Hydrology and Water Resources University of Arizona

The objective of this study was to investigate the spatial relationship between the most likely distribution of saturated hydraulic conductivity(Ks) and the observed pressure head(P) distribution within a hillslope. The cross-correlation analysis method was used to investigate the effects of the variance of ln Ks, spatial structure anisotropy of ln Ks, and vertical infiltration flux(q) on P at some selected locations within the hillslope. The cross-correlation analysis shows that, in the unsaturated region with a uniform flux boundary, the dominant correlation between P and Ksis negative and mainly occurs around the observation location of P. A relatively high P value is located in a relatively low Kszone, while a relatively low P value is located in a relatively high Kszone. generally speaking, P is positively correlated with q/Ksat the same location in the unsaturated region. In the saturated region, the spatial distribution of Kscan significantly affect the position and shape of the phreatic surface. We therefore conclude that heterogeneity can cause some parts of the hillslope to be sensitive to external hydraulic stimuli(e.g., rainfall and reservoir level change), and other parts of the hillslope to be insensitive. This is crucial to explaining why slopes with similar geometries would show different responses to the same hydraulic stimuli, which is significant to hillslope stability analysis.

关键词： Cross-correlation analysis Heterogeneity Hillslope stability Saturated hydraulic conductivity Stochastic conceptualization Pore-water pressure

SEUSS and PIF4 Coordinately Regulate Light and Temperature Signaling Pathways to Control Plant growth

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Molecular Plant 2018年第7期11卷 928-942页

作者： Junling Huai Xinyu zha.g dialong Li Tingting Ma Ping zha Yanjun jing Rongcheng Lin Key Laboratory of Photobiology Institute of Botany Chinese Academy of Sciences Beijing 100093 China University of Chinese Academy of Sciences Beijing 100049 China gAS Center for Excellence in Molecular Plant Sciences Chinese Academy of Sciences Beijing 100093 China These authors contribute equally to this article.

Plants continuously monitor environmental conditions （such as light and temperature） and adjust their growth and development accordingly. The transcription factor PHYTOCHROME-INTERACTINg FACTOR4 （PIF4） regulates both light and temperature signaling pathways. Here, we identified ENHANCED PHOTOMORPHOgENIC2 （EPP2） as a new repressor of photomorphogenesis in red, far-red, and blue light. Map-based cloning revealed that EPP2 encodes the SEUSS （SEU） transcription regulator. The C terminus of SEU has transcriptional activation activity, and SEU physically interacts with PIF4. Moreover, SEU promotes the expression of many genes, including auxin biosynthetic and responsive genes, and regulates IAA levels in plants. SEU associates with the regulatory regions of INDOLE-3-ACETIC ACID INDUCIBLE6 （IAA6） and IAA 19 in a PIF4-independent manner, whereas the binding of PIF4to these genes requires SEU. Furthermore, muta- tions in SEU affect H3K4me3 methylation at IAA6 and IAA 19, and SEU positively regulates warm temperature- mediated hypocotyl growth together with PIF4. Collectively, our results reveal that SEU acts as a central regulator integrating light and temperature signals to control plant growth by coordinating with PIF4.

关键词： light temperature SEU PIF4 transcription regulation

Trimethylamine oxide supplementation differentially regulates fat deposition in liver, longissimus dorsi muscle and adipose tissue of growing-finishing pigs

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Animal Nutrition 2024年第2期17卷 25-35页

作者： Andong zha Wanquan Li jing Wang Ping Bai Ming Qi Peng Liao Bie Tan Yulong Yin Laboratory of Animal Nutritional Physiology and Metabolic Process Key Laboratory of Agro-ecological Processes in Subtropical RegionNational Engineering Laboratory for Pollution Control and Waste Utilization in Livestock and Poultry ProductionInstitute of Subtropical AgricultureChinese Academy of Sciences University of Chinese Academy of Sciences College of Animal Science and Technology Hunan Agricultural University Yunnan Southwest Agriculture and Animal Husbandry group Co. Ltd.

Trimethylamine oxide(TMAO) is a microbiota-derived metabolite, and numerous studies have shown that it could regulate fat metabolism in humans and mice. However, few studies have focused on the effects of TMAO on fat deposition in growing-finishing pigs. This study aimed to investigate the effect of TMAO on fat deposition and intestinal microbiota in growing-finishing pigs. Sixteen growing pigs were randomly divided into 2 groups and fed with a basal diet with 0 or 1 g/kg TMAO for 149 d. The intestinal microbial profiles, fat deposition indexes, and fatty acid profiles were measured. These results showed that TMAO supplementation had a tendency to decrease lean body mass(P gnificantly increased backfat thickness(P growth performance. TMAO significantly increased total protein(TP) concentration, and reduced alkaline phosphatase(ALP) concentration in serum(P gnificantly increased acetate content in the ileum, and Proteobacteria and Escherichia-Shigella were significantly enriched in the TMAO group(P gissimus dorsi muscle, whereas the C18:2n6c ratio was increased,and the n-6 PUFA:PUFA ratio was decreased(P gnificantly upregulated the expression of FASN and SREBP1 in C2C12 cells(P gether, TMAO supplementation regulated ileal microbial composition and acetate production, and regulated fat distribution and fatty acid composition in growing-finishing pigs. These results

关键词： growing-finishing pig Trimethylamine oxide Fat deposition Fatty acid composition Intestinal microbiota

Comparison of the signaling pathways of wing dimorphism regulated by biotic and abiotic stress in the brown planthopper

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Insect Science 2023年第4期30卷 1046-1062页

作者： jing-Xiang Chen Wan-Xue Li Qin Su Jun Lyu Yi-Bing zha.g Wen-Qing zha State Key Laboratory of Biocontrol and School of Life Sciences Sun Yat-sen UniversityGuangzhouChina

Wing polymorphism is an evolutionary trait that is widely present in various insects and provides a model system for studying the evolutionary significance of insect *** brown planthopper(BPH,Nilaparvata lugens)can alter its wing morphs un-der biotic and abiotic ***,whether differential signaling pathways are induced by the 2 types of stress remain largely ***,we screened a number of candidate genes through weighted gene co-expression network analysis(WgCNA)and found that ornithine decarboxylase(NIODC),a key enzyme in the synthesis of polyamines,was as-sociated with wing differentiation in BPH and mainly responded to abiotic stress *** analyzed the Kyoto Encyclopedia of genes and genomes enrichment pathways of dif-ferentially expressed genes under the 2 stresses by transcriptomic comparison,and found that biotic stress mainly influenced insulin-related signaling pathways while abiotic stress mainly influenced hormone-related ***,we found that insulin receptor 1(NllnRI)may regulate wing differentiation of BPH by responding to both biotic and abiotic stress,but NllnR2 only responded to biotic ***,the juvenile hormone epoxide hydrolase associated with juvenile hormone degradation and NIODC may regu-late wing differentiation mainly through abiotic stress.A model based on the genes and stresses to modulate the wing dimorphism of BPH was *** findings present a comprehensive molecular mechanism for wing polymorphism in BPH induced by biotic and abiotic stress.

关键词： insulin juvenile hormone Nilaparvata lugens ornithine decarboxylase stress wing dimorphism

The Evening Complex and the Chromatin-Remodeling Factor PICKLE Coordinately Control Seed Dormancy by Directly Repressing DOg1 in Arabidopsis

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Plant Communications 2020年第2期1卷 54-65页

作者： Ping zha Shuangrong Liu Yang Li Tingting Ma Liwen Yang Yanjun jing Rongcheng Lin Key Laboratory of Photobiology Institute of BotanyChinese Academy of SciencesBeijing 100093China University of Chinese Academy of Sciences Beijing 100049China CAS Center for Excellence in Molecular Plant Sciences Institute of BotanyChinese Academy of SciencesBeijing 100093China

Primary seed dormancy is acquired during seed development and maturation,which is important for plant fitness and *** OF gERMINATION1(DOg1)plays a critical role in inducing seed ***1 expression increases rapidly during seed development,but the precise mechanism underlying this process remains *** this study,we showed that mutants with a loss or reduced function of the chromatin-remodeling factor PICKLE(PKL)exhibit increased seed *** associates with DOg1 chromatin and inhibits its *** found that PKL physically interacts with LUX ARRHYTHMO(LUX),a member of the evening complex(EC)of the circadian ***,LUX directly binds to a specific coding sequence of DOg1,and DOg1 acts genetically downstream of PKL and *** in either LUX or EARLY FLOWERINg3(ELF3)encoding another member of the EC led to increased DOg1 expression and enhanced seed ***,these phenotypes were abolished when the parent plants were grown under continuous *** addition,we observed that loss of function of either PKL or LUX decreased H3K27me3 levels at the DOg1 *** together,our study reveals a regulatory mechanism in which EC proteins coordinate with PKL to transmit circadian signals for directly regulating DOg1 expression and seed dormancy during seed development.

关键词： seed dormancy chromatin remodeling clock DOg1