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Antibiotics in northern China’s largest shallow wetland lake:Occurrence,bioaccumulation,ecological risk,and indicator screening 认领 引用 被引量：1
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作者 Kai Deng Lining Zhao +6 位作者 Meiyu Li Xueyou Liang Xiaobo Wang Jinze Han Yulong Zhang Ryoiti Kiyama Sijun Dong 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第1期233-241,共9页
Antibiotics are widespread in aquatic environments due to their extensive use in human healthcare and ani-mal husbandry.However,research on the occurrence and bioaccumulation of antibiotics in aquatic organisms within... Antibiotics are widespread in aquatic environments due to their extensive use in human healthcare and ani-mal husbandry.However,research on the occurrence and bioaccumulation of antibiotics in aquatic organisms within shallow wetland lakes remains limited.This study investigated the occurrence and bioaccumulation of ten commonly used antibiotics in the Baiyang Lake,northern China’s largest shallow wetland lake.The results indicated that sulfonamides and fluoroquinolones were the predominant antibiotics in surface water,whereas fluoroquinolones and macrolides were more prevalent in sediment.Fluoroquinolones demonstrated significant potential for bioaccumulation in targeted aquatic organisms,including both animals and plants(Carassius au-ratus and Phragmites australis).The bioaccumulation of antibiotics in Carassius auratus was correlated with their solubility,whereas in Phragmites australis,this was associated with their octanol-water partition coefficients and molecular weights.Ecological risk assessment indicated that most antibiotics posed minimal to low risk levels.However,four antibiotics were exceptions:clarithromycin(12.5%)and sulfamethoxazole(6.25%)presented a high risk in surface water samples,while norfloxacin(25.0%)and ciprofloxacin(25.0%)posed a high risk in sediment samples.Norfloxacin,ciprofloxacin,and roxithromycin were identified as key indicator antibiotics for enhancing the local monitoring and control of antibiotic contamination based on four criteria:(1)high con-centrations,(2)frequent detection,(3)capacity for bioaccumulation,and(4)ecological risk levels.This study contributes to a deeper understanding of the status of antibiotic contamination,bioaccumulation characteristics,and ecological risk in Baiyang Lake,thereby supporting efforts to monitor and regulate antibiotic pollution. 展开更多
关键词 Baiyang lake Antibiotics Bioaccumulation Ecological risk Indicator
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Research on Two-Stage Capacity Configuration Optimization of Internet Dispatching Systems:From the Perspective of AI Empowerment and User Behavior 认领 引用
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作者 Yunjie Lou 《Proceedings of Business and Economic Studies》 2026年第1期144-151,共8页
Against the backdrop of the rapid development of the digital economy,internet dispatching platforms such as food delivery and ride-hailing services have become key urban infrastructure.However,they generally face the ... Against the backdrop of the rapid development of the digital economy,internet dispatching platforms such as food delivery and ride-hailing services have become key urban infrastructure.However,they generally face the core contradiction between dynamic demand fluctuations and rigid service capacity constraints.This paper decomposes the dispatching system into a two-stage closed-loop structure of“waiting and service”.Combining queuing theory principles,AI empowerment characteristics,and introducing user loss aversion psychology and reference utility features,a configuration model covering basic capacity and safety capacity is constructed to explore optimal capacity strategies under profit-oriented and welfare-oriented orientations.Numerical examples verify the model’s effectiveness.Results show that the optimal capacity consists of basic capacity and safety capacity,with the two-stage safety capacity maintaining a specific matching ratio.Moreover,AI empowerment reduces the basic capacity demand in the waiting stage but requires simultaneous optimization of service stage capacity to avoid new bottlenecks.Consequently,platform positioning and user behavior characteristics significantly affect capacity configuration efficiency.The research conclusions provide theoretical support and practical guidance for dispatching platforms to achieve refined operations and balance efficiency with user experience. 展开更多
关键词 Internet dispatching system Capacity configuration AI empowerment User behavior Queuing theory
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Identification of Limiting Factors and Engineering Selection for Agricultural Development of Barren Grassland:A Systems Engineering Approach 认领 引用
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作者 Zhaoya Chen Yinuo Zhao +2 位作者 Boan Shi Yaheng Chen Xinxing Zhang 《Journal of Environmental & Earth Sciences》 CAS 2025年第4期351-367,共17页
Agricultural land development is a pivotal strategy for addressing the global food security crisis.Barren grassland,especially those in mountainous regions,constitutes critical areas where cultivation can substantiall... Agricultural land development is a pivotal strategy for addressing the global food security crisis.Barren grassland,especially those in mountainous regions,constitutes critical areas where cultivation can substantially enhance land resources.This study highlights the necessity for a precise correlation between land development initiatives and constraints in order to optimize efficiency and enhance the effectiveness of such projects,with the core being the seamless integration of land development engineering and techniques to eliminate agricultural constraints.This study employs a systems engineering approach to classify improvement factors into mobile and fixed categories,elucidating the integration methods of constraint factors.Adhering to the Wooden Barrel Principle,these constraints were rigorously analyzed based on soil quality,land topography,water availability,and agricultural infrastructure.An innovative method of engineering type combination is proposed,which effectively explains the correlation between natural factors combination,project type combination,and target factors combination.It provides a convenient way for the selection of barren grassland development projects and lays a foundation for land planning,development project establishment,program selection,engineering design,and budget preparation.Taking Tang County of China as an example,it is divided into 19 factor improvement areas,a quick reference table of engineering types is established,and 14 main types of engineering combinations are obtained,which lays a foundation for the application of theoretical framework in practice. 展开更多
关键词 Barren Grassland Land Development Limiting Factors Engineering Combination Engineering Selection Cultivated Land Reserve Resources
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Densely populated single-atom catalysts for boosting hydrogen generation from formic acid 认领 引用 被引量：3
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作者 Xiaogeng Zhao Junmin Wang +6 位作者 Dongnuan Zhang Yunhui Hao Xingmian Zhang Junna Feng Hong Su Cheng Feng Chun Wang 《Carbon Energy》 SCIE EI CSCD 2025年第1期64-75,共12页
The single-atom M-N-C(M typically being Co or Fe)is a prominent material with exceptional reactivity in areas of catalysis for sustainable energy.However,the formation of metal nanoparticles in M-N-C materials is coup... The single-atom M-N-C(M typically being Co or Fe)is a prominent material with exceptional reactivity in areas of catalysis for sustainable energy.However,the formation of metal nanoparticles in M-N-C materials is coupled with hightemperature calcination conditions,limiting the density of M-Nx active sites and thus restricting the catalytic performance of such catalysts.Herein,we describe an effective decoupling strategy to construct high-density M-Nx active sites by generating polyfurfuryl alcohol in the MOF precursor,effectively preventing the formation of metal nanoparticles even with up to 6.377%cobalt loading.This catalyst showed a high H2 production rate of 778mLgcat−1 h−1 when used in the dehydrogenation reaction of formic acid.In addition to the high density of the active site,a curved carbon surface in the structure is also thought to be the reason for the high performance of the catalyst. 展开更多
关键词 cobalt dehydrogenation formic acid polyfurfuryl alcohol single-atom catalyst
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Highly-Efficient Low-Loading Co Atom Sites Catalyst for Hydrogen Generation From Formic Acid 认领 引用
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作者 Xingmian Zhang Junmin Wang +11 位作者 Yunhui Hao Mingzhu Gao Xiaogeng Zhao Wenli Ma Decai Wang Yanling Ren Yixuanfei Gao Jiajia Li Zihan Wen Zheng Wang Chun Wang Cheng Feng 《Carbon Energy》 SCIE EI CSCD 2025年第12期1-12,共12页
The development of formic acid dehydrogenation materials with high activity and low cost is key to realizing hydrogen energy utilization.Herein,we describe a specific low-loading strategy to construct a high-activity ... The development of formic acid dehydrogenation materials with high activity and low cost is key to realizing hydrogen energy utilization.Herein,we describe a specific low-loading strategy to construct a high-activity Co atom site catalyst for this reaction.Under optimal conditions,the formic acid dehydrogenation performance of Co─Fe dual-atom catalyst(turnover frequency of 2,446.8 h−1,hydrogen production rate of 1,015,306.1 mL gCo−1h−1)was 300 times greater than that of commercial 5%Pd/C.High-angle annular dark-field scanning transmission electron microscopy and X-ray absorption fine structure spectra,combined with theoretical calculations,confirm that the presence of different active sites(Co single-atom,Co-Co dual-atom,Co─Fe dual-atom)in catalysts is the key factor affecting their catalytic activity.These findings provide a strong scientific basis for the development of single-atom and dual-atom catalysts. 展开更多
关键词 dual-atom catalysts formic acid dehydrogenation highly-efficient low-loading single-atom catalysts
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Unveiling the role of the TIR1/AFB gene family in Capsicum annuum:genome-wide identification,characterization,and transcriptomic analysis under Ralstonia solanacearum infection 认领 引用
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作者 Wenchao Du Zhiyu Yu +8 位作者 Xiaoyan Miao Zhongcai Teng Chao Zhang Bingqian Zhang Meng Xia Jingbin Hua Umer Karamat Peiqing Liu Zhenhua Jia 《Vegetable Research》 2025年第1期159-166,共8页
TIR1/AFB proteins play key roles in plants responding to Solanum crop disease.In this study,five putative TIR1/AFB proteins were identified in pepper(Capsicum annuum).Chromosomal mapping revealed that CaTIR1/AFB genes... TIR1/AFB proteins play key roles in plants responding to Solanum crop disease.In this study,five putative TIR1/AFB proteins were identified in pepper(Capsicum annuum).Chromosomal mapping revealed that CaTIR1/AFB genes are located on chromosomes DH02,DH03,DH04,and DH06.Phylogenetic tree analysis based on TIR1/AFB protein sequences from Arabidopsis,tomato,and eggplant revealed that the CaTIR1/AFB genes in pepper belong to three of the four identified subgroups.One collinear gene pair(CaTIR1C and CaTIR1B)was identified in pepper,suggesting the TIR1/AFB gene family in pepper experienced segmental duplications in evolution.Seventy-eight cis-elements related to the hormone,defense,drought,and light response were identified.RNA-sequencing data and expression profiling showed that TIR1/AFB genes were expressed differently under R.solanacearum treatment;downregulated expression of all CaTIR1/AFBs was observed in the resistant variety,while CaTIR1C was upregulated in the susceptible variety.Subcellular localization analysis showed that CaTIR1C is a nuclear-localized protein.Further virus-induced gene silencing(VIGS)assays revealed that knocking down CaTIR1C enhanced pepper resistance to R.solanacearum,indicating that CaTIR1C is a negative regulator in response to R.solanacearum.These findings contribute to the molecular breeding of bacterial wilt-resistant pepper and hold the potential to improve disease control efficiency by further exploring the function of CaTIR1C. 展开更多
关键词 genome wide identification tree analysis phylogenetic tree analysis Capsicum annuum Ralstonia solanacearum infection collinear gene pair transcriptomic analysis tir afb proteins
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Seedling and adult plant resistance to leaf rust in 46 Chinese bread wheat landraces and 39 wheat lines with known Lr genes 认领 引用 被引量：7
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作者 ZHANG Pei-pei Takele Weldu Gebrewahid +3 位作者 ZHOU Yue LI Qing-luo LI Zai-feng LIU Da-qun 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2019年第5期1014-1023,共10页
Wheat leaf rust,caused by Puccinia triticina(Pt),is an important foliar disease that has an important influence on wheat yield.The most economic,safe and effective way to control the disease is growing resistant culti... Wheat leaf rust,caused by Puccinia triticina(Pt),is an important foliar disease that has an important influence on wheat yield.The most economic,safe and effective way to control the disease is growing resistant cultivars.In the present study,a total of 46 wheat landraces and 34 wheat lines with known Lr(leaf rust resistance)genes were inoculated with 16Pt pathotypes for postulating seedling resistance gene(s)in the greenhouse.These cultivars and five wheat differential lines with adult plant resistance(APR)genes(Lr12,Lr22b,Lr34,Lr35 and Lr37)were also evaluated for identification of slow rusting resistance in the field trials in Baoding,Hebei Province of China in the 2014–2015 and 2015–2016 cropping seasons.Furthermore,10 functional molecular markers closely linked to 10 known Lr genes were used to detect all the wheat genotypes.Results showed that most of the landraces were susceptible to most of the Pt pathotypes at seedling stage.Nonetheless,Lr1 was detected only in Hongtangliangmai.The field experimental test of the two environments showed that 38 landraces showed slow rusting resistance.Seven cultivars possessed Lr34 but none of the landraces contained Lr37 and Lr46.Lr genes namely,Lr9,Lr19,Lr24,Lr28,Lr29,Lr47,Lr51 and Lr53 were effective at the whole plant stage.Lr18,Lr36 and Lr45 had lost resistance to part of pathotypes at the seedling stage but showed high resistance at the adult plant stage.Lr34 as a slowing rusting gene showed good resistance in the field.Four race-specific APR genes Lr12,Lr13,Lr35 and Lr37 conferred good resistance in the field experiments.Seven race-specific genes,Lr2b,Lr2c,Lr11,Lr16,Lr26,Lr33 and LrB had lost resistance.The 38 landraces showed slow rusting resistance to wheat leaf rust can be used as resistance resources for wheat resistance breeding in China. 展开更多
关键词 Triticum aestivum L. wheat leaf rust gene postulation adult plant resistance
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QTL Mapping for Stalk Related Traits in Maize (Zea mays L.) Under Different Densities 认领 引用 被引量：8
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作者 ZHU Li-ying CHEN Jing-tang +5 位作者 Li Ding ZHANG Jian-hua HUANG Ya-qun ZHAO Yong-feng SONG Zhan-quan LIU Zhi-zeng 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2013年第2期218-228,共11页
Stalk related traits, comprising plant height （PH）, ear height （EH）, internode number （IN）, average internode length （ALL）, stalk diameter （SD）, and ear height coefficient （EHC）, are significantly correlat... Stalk related traits, comprising plant height （PH）, ear height （EH）, internode number （IN）, average internode length （ALL）, stalk diameter （SD）, and ear height coefficient （EHC）, are significantly correlated with yield, density tolerance, and lodging resistance in maize. To investigate the genetic basis for stalk related traits, a doubled haploid （DH） population derived from a cross between NX531 and NX110 were evauluated under two densities over 2 yr. The additive quantitative trait loci （QTLs）, epistatic QTLs were detected using inclusive composite interval mapping and QTL-by-environment interaction were detected using mixed linear model. Differences between the two densities were significant for the six traits in the DH population. A linkage map that covered 1 721.19 cM with an average interval of 10.50 cM was constructed with 164 simple sequence repeat （SSR）. Two, two, seven, six, two, and eight additive QTLs for PH, IN, AIL, EH, SD, and EHC, respectively. The extend of their contribution to penotypic variation ranged from 10.10 to 31.93%. Seven QTLs were indentified simultaneously under both densities. One pair, two pairs and one pair of epistatic effects were detected for AIL, SD and EHC, respectively. No epistatic effects were detected for PH, EH, and IN. Nineteen QTLs with environment interactions were detected and their contribution to phenotypic variation ranged from 0.43 to 1.89%. Some QTLs were stably detected under different environments or genetic backgrounds comparing with previous studies. These QTLs could be useful for genetic improvement of stalk related traits in maize breeding. 展开更多
关键词 maize density stalk related traits quantitative trait loci epistatic effect QTL-by-environment interaction
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Influence of oxygen gas content on the structural and optical properties of ZnO thin films deposited by RF magnetron sputtering at room temperature 认领 引用 被引量：6
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作者 LIU Baoting ZHOU Yang +4 位作者 ZHENG Hongfang LI Mana GUO Zhe HAO Qingxun PENG Yingcai 《Rare Metals》 SCIE EI CAS CSCD 2011年第2期170-174,共5页
Zinc oxide （ZnO） thin films were deposited on sapphire （0001） substrates at room temperature by radiofrequency （RF） magnetron sputtering at oxygen gas contents of 0%, 25%, 50% and 75%, respectively. The influenc... Zinc oxide （ZnO） thin films were deposited on sapphire （0001） substrates at room temperature by radiofrequency （RF） magnetron sputtering at oxygen gas contents of 0%, 25%, 50% and 75%, respectively. The influence of oxygen gas content on the structural and optical properties of ZnO thin films was studied by a surface profile measuring system, X-ray diffraction analysis, atomic force microscopy, and UV spectro- photometry. It is found that the size of ZnO crystalline grains increases first and then decreases with the increase of oxygen gas content, and the maximum grain size locates at the 25% oxygen gas content. The crystalline quality and average optical transmittance （〉90%） in the visi- ble-light region of the ZnO film prepared at an oxygen gas content of 25% are better than those of ZnO films at the other contents. The obtained results can be attributed to the resputtefing by energetic oxygen anions in the growing process. 展开更多
关键词 thin films zinc oxide magnetron sputtering oxygen structural properties optical properties
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Effect of fructooligosaccharides on the colonization of Lactobacillus rhamnosus AS 1.2466T in the gut of mice 认领 引用 被引量：12
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作者 Zhihua Niu Meijuan Zou +5 位作者 Tingting Bei Na Zhang Dongyao Li Miaoshu Wang Chen Li Hongtao Tian 《Food Science and Human Wellness》 SCIE CAS CSCD 2023年第2期607-613,共7页
Lactobacillus rhamnosus and fructooligosaccharides(FOS)have been widely studied so far.However,the effects of L.rhamnosus on the intestinal microecological environment at the species level and the effect of different ... Lactobacillus rhamnosus and fructooligosaccharides(FOS)have been widely studied so far.However,the effects of L.rhamnosus on the intestinal microecological environment at the species level and the effect of different proportions of FOS on L.rhamnosus colonization in different parts of mice intestine are still unclear.The study results indicated that the specific bands of enterobacterial repetitive intergenic consensus polymerase chain reaction(ERIC-PCR)in the L.rhamnosus(LR)group significantly increased at 7 days.Although the number of bands was similar to the natural recovery(NR)group,the brightness of few bands significantly enhanced in the later stage of recovery.Besides,Southern-blot maps showed strong signals,indicating that the ERIC-PCR fingerprint could accurately reflect the changes in the mouse gut microbiota diversity.Further,the high-throughput results confirmed that the Lactobacillus and Akkermansia had different changes at different periods,but all of them showed an upward trend,while the Klebsiella were inhibited,thereby maintaining the intestinal microecology balance.Moreover,FOS exerted a positive effect on L.rhamnosus colonization in the gut. 展开更多
关键词 Intestinal microbiota Synbiotics Fructooligosaccharides Lactobacillus rhamnosus
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Evaluating refractive index and birefringence of nonlinear optical crystals:Classical methods and new developments 认领 引用 被引量：11
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作者 Qi Shi Lingyun Dong Ying Wang 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 2023年第1期46-63,共18页
Nonlinear optical(NLO)materials play an increasingly important role in laser technology.Birefringence is one of the most important parameters for NLO materials to realize angle phase-matching conditions.In comparison ... Nonlinear optical(NLO)materials play an increasingly important role in laser technology.Birefringence is one of the most important parameters for NLO materials to realize angle phase-matching conditions.In comparison with other desirable optical properties,the availability of birefringence and refractive index dispersion is especially problematic owing to the strict requirements for single crystals.In this review,we described how to obtain the refractive index and birefringence of NLO materials from crystals sub-millimeters to centimeters in size.Espe-cially,recently developed methods including the minimum deflection angle method,auto-collimation method,prism coupling method,oil immersion technique,interference color method,and theoretical calculation(DFT)for rapid assessment of birefringence are summarized,the contents of which are mainly focused on the principles and typical applications,together with the advantages and drawbacks.In addition,representative examples of bire-fringent measurements were presented.The purpose of this work is to provide a useful perspective on the characterization of birefringence for NLO materials.It is hoped that this review can give a clear description of the birefringence measurements and accelerate the discovery of new NLO crystals. 展开更多
关键词 Nonlinear optical crystals Refractive index Birefringence DFT calculation Phase-matching
3-LIE BIALGEBRAS 认领 引用 被引量：5
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作者 白瑞蒲 程宇 +1 位作者 李佳倩 孟伟 《Acta Mathematica Scientia》 SCIE CSCD 2014年第2期513-522,共10页
3-Lie algebras have close relationships with many important fields in mathemat- ics and mathematical physics. This article concerns 3-Lie algebras. The concepts of 3-Lie coalgebras and 3-Lie bialgebras are given. The ... 3-Lie algebras have close relationships with many important fields in mathemat- ics and mathematical physics. This article concerns 3-Lie algebras. The concepts of 3-Lie coalgebras and 3-Lie bialgebras are given. The structures of such categories of algebras and the relationships with 3-Lie algebras are studied. And the classification of 4-dimensional 3-Lie coalgebras and 3-dimensional 3-Lie bialgebras over an algebraically closed field of char- acteristic zero are provided. 展开更多
关键词 3-Lie algebra 3-Lie coalgebra 3-Lie bialgebra
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QTL mapping of adult plant resistance to stripe rust and leaf rust in a Fuyu 3/Zhengzhou 5389 wheat population 认领 引用 被引量：4
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作者 Takele Weldu Gebrewahid Peipei Zhang +5 位作者 Yue Zhou Xiaocui Yan Xianchun Xia Zhonghu He Daqun Liu Zaifeng Li 《The Crop Journal》 SCIE CSCD 2020年第4期655-665,共11页
Stripe or yellow rust(YR)and leaf rust(LR)cause large losses in wheat production worldwide.Resistant cultivars curtail the levels of losses.The present study aimed to identify quantitative trait loci(QTL)for YR and LR... Stripe or yellow rust(YR)and leaf rust(LR)cause large losses in wheat production worldwide.Resistant cultivars curtail the levels of losses.The present study aimed to identify quantitative trait loci(QTL)for YR and LR resistance in 147 F2:6 recombinant inbred lines(RIL)derived from the cross Fuyu 3/Zhengzhou 5389.The RIL population and parents were genotyped with the Wheat55 K single nucleotide polymorphism(SNP)array and simple sequence repeat(SSR)markers.All materials were also phenotyped for YR severity at Mianyang in Sichuan province and Baoding in Hebei province in the 2015/2016,2016/2017,and 2017/2018 cropping seasons,and LR severity at Zhoukou in Henan province and at Baoding in 2017/2018.Eleven QTL for YR resistance and five for LR resistance were detected using inclusive composite interval mapping(Ici Mapping).Four of these QTL on chromosomes 1 BL,2 BS,3 AL,and 5 AL conferred resistance to both YR and LR.The QTL on 1 BL was Lr46/Yr29,and that on 7 BL might be Lr68.The QTL on chromosome 2 BS was detected at a similar position to previously detected loci.QYr.hebau-3 AL/QLr.hebau-3 AL,QYr.hebau-5 AL/QLr.hebau-5 AL,QYr.hebau-7 DL,QYr.hebau-4 BS,QYr.hebau-6 DL,and QYr.hebau-2 AS are likely to be new.An SSR marker for QYr.hebau-7 DL was developed and validated in a diverse wheat panel from China,suggesting effectiveness in different genetic backgrounds.These QTL with closely linked SNP and SSR markers could be useful for marker-assisted selection in wheat breeding programs targeting durable resistance to both diseases. 展开更多
关键词 mapping wheat breeding
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Analysis of anticancer compound,indole-3-carbinol,in broccoli using a new ultrasound-assisted dispersive-filter extraction method based on poly(deep eutectic solvent)-graphene oxide nanocomposite 认领 引用 被引量：2
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作者 Yanan Yuan Huanhuan Chen +2 位作者 Yehong Han Fengxia Qiao Hongyuan Yan 《Journal of Pharmaceutical Analysis》 SCIE CAS CSCD 2022年第2期301-307,共7页
Indole-3-carbinol(I3C),an important anticancer compound found in broccoli,has attracted considerable attention.The rapid extraction and accurate analysis of I3C in the pharmaceutical industry in broccoli is challengin... Indole-3-carbinol(I3C),an important anticancer compound found in broccoli,has attracted considerable attention.The rapid extraction and accurate analysis of I3C in the pharmaceutical industry in broccoli is challenging as I3C is unstable at low pH and high temperature.In this study,a rapid,accurate,and lowcost ultrasound-assisted dispersive-filter extraction(UADFE)technique based on poly(deep eutectic solvent)-graphene oxide(PDES-GO)adsorbent was developed for the isolation and analysis of I3C in broccoli for the first time.PDES-GO with multiple adsorption interactions and a fast mass transfer rate was synthesized to accelerate adsorption and desorption.UADFE was developed by combining dispersive solid-phase extraction(DSPE)and filter solid-phase extraction(FSPE)to realize rapid extraction and separation.Based on the above two strategies,the proposed PDES-GO-UADFE method coupled with high-performance liquid chromatography(HPLC)allowed the rapid(15-16 min),accurate(84.3%-96.4%),and low-cost(adsorbent:3.00 mg)analysis of I3C in broccoli and was superior to solid-phase extraction,DSPE,and FSPE methods.The proposed method showed remarkable linearity(r=0.9998;range:0.0840-48.0 mg/g),low limit of quantification(0.0840 mg/g),and high precision(relative standard deviation<5.6%).Therefore,the PDES-GO-UADFE-HPLC method shows significant potential in the field of pharmaceutical analysis for the separation and analysis of anti-cancer compounds in complex plant samples. 展开更多
关键词 Indole-3-carbinol Broccoli Poly(deep eutectic solvent)-graphene oxide Ultrasound-assisted dispersive-filter extraction Rapid analysis
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Laser-induced voltage effects in Ca_3Co_4O_9 thin films on tilted LaAlO_3(001) substrates grown by chemical solution deposition 认领 引用 被引量：1
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作者 王淑芳 陈明敬 +5 位作者 赵书瑞 陈景春 何立平 于威 王江龙 傅广生 《Chinese Physics B》 SCIE EI CAS 2010年第10期441-444,共4页
Laser-induced voltage effects in c-axis oriented Ca3Co4O9 thin films have been studied with samples fabricated on 10°tilted LaAIO3 （001） substrates by a simple chemical solution deposition method. An open-circu... Laser-induced voltage effects in c-axis oriented Ca3Co4O9 thin films have been studied with samples fabricated on 10°tilted LaAIO3 （001） substrates by a simple chemical solution deposition method. An open-circuit voltage with a rise time of about 10 ns and full width at half maximum of about 28 ns is detected when the film surface is irradiated by a 308-nm laser pulse with a duration of 25 ns. Besides, opemcircuit voltage signals are also observed when the film surface is irradiated separately by the laser pulses of 532 nm and 1064 nm. The results indicate that Ca3Co4O9 thin films have a great potential application in the wide range photodetctor from the ultraviolet to near infrared regions. 展开更多
关键词 laser-induced voltage Ca3Co4O9 thin films chemical solution deposition
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Polymorphism and heredity of cpDNA and mtDNA in the Section Leuce of Populus 认领 引用
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作者 CUI Bin-bin XU Zhao-he +3 位作者 JIN Xiao-jie FENG Hui LI Yun DU Ning-xia 《Forestry Studies in China》 2011年第3期218-224,共7页
The chloroplast DNA （cpDNA） and mitochondrial DNA （mtDNA） of 16 Populus species （Section Leuce） and their F1 generation were detected using PCR-RFLP technique. The results show that cpDNA in the F1 generation of... The chloroplast DNA （cpDNA） and mitochondrial DNA （mtDNA） of 16 Populus species （Section Leuce） and their F1 generation were detected using PCR-RFLP technique. The results show that cpDNA in the F1 generation of 22 hybrid combinations was inherited maternally, which supported the conclusions of the study of plasmid cytology. The mtDNA fragments amplified by PCR were consistent with the restriction maps in all hybrid combinations and no polymorphism was detected, indicating that the Section Leuce is highly conserved in mitochondrial gene sequences. These results provided direct evidence of maternal chloroplast inheritance in Populus tomentosa, P. bolleana, P. davidiana, P. adenopoda, P. tomentosa × P. bolleana, P. alba × P. glandulosa and P. alba × P. tomentosa. 展开更多
关键词 Section Leuce chloroplast DNA mitochondrial DNA polymorphism heredity
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Mapping of QTL conferring leaf rust resistance in Chinese wheat lines W014204 and Fuyu 3 at adult plant stage 认领 引用 被引量：4
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作者 QI Ai-yong ZHANG Pei-pei +3 位作者 ZHOU Yue YAO Zhan-jun LI Zai-feng LIU Da-qun 《Journal of Integrative Agriculture》 SCIE CAS CSCD 2016年第1期18-28,共11页
Wheat leaf rust is a destructive foliar disease of common wheat(Triticum aestivum L.)worldwide.The most effective,economical s to control the disease is growing resistant cultivars with adult plant resistance(APR).The... Wheat leaf rust is a destructive foliar disease of common wheat(Triticum aestivum L.)worldwide.The most effective,economical s to control the disease is growing resistant cultivars with adult plant resistance(APR).The Chinese wheat tines W014204 and Fuyu 3 showed high leaf rust resistance in the field.To identify leaf rust APR genes in the two lines,two mapping populations with 215 and 163 F2:3 lines from the crosses W014204/Zhengzhou 5389 and Fuyu 3/Zhengzhou 5389,respectively,were phenotyped for leaf rust severities during the 2010-2011,2011-2012 and 2012-2013 cropping seasons in the field at Baoding,Hebei Province,China.A total of 1215 SSR markers were used to identify the quantitative trait loci(QTLs)for leaf rust APR in the two populations.In the W014204/Zhengzhou 5389 population,three QTLs were detected and designated as QLr.hbu-lBL.1,QLr.hbu-2BS.1 and QLr.hbu-7DS,and explained 2.9-8.4,11.5-38.3 and 8.5-44.5%of the phenotypic variance,respectively;all the resistance alleles at these loci were derived from W014204.In the Fuyu 3/Zhengzhou 5389 population,three QTLs,QLr.hbu-lBL.2,QLr.hbu-2BS.2 and QLr.hbu-7BL,explained 12.0-19.2,22.3-38.9 and 4.1-4.3%of the phenotypic variance,respectively,and all resistance alleles were contributed by Fuyu 3.Based on chromosome positions of closely linked markers,both QLr.hbu-lBL.1 and QLr.hbu-lBL.2 are Lr46,and QLr.hbu-7DS is Lr34.QLr.hbu-7BL was mapped on chromosome 7BL near to Lr68 and they are likely the same gene.Based on chromosome positions,pedigree and field reactions,the two 2BS QTLs are different from all the known APR genes and are likely to be newAPR QTL for leaf rust.These QTLs and their closely linked markers are potentially useful for improving leaf rust resistance in wheat breeding. 展开更多
关键词 Triticum aestivum Puccinia triticina APR SSR marker
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Research on Equipment Management System Based on Robot Laboratory 认领 引用
18
作者 Chong Hu Xin Wang Yunhui Wang 《Journal of Computer and Communications》 2020年第7期23-31,共9页
With the expansion of the scale of our hospital robot laboratory, equipment use, reserves are increasing, manual management equipment information has been unable to adapt to daily management, such as data record error... With the expansion of the scale of our hospital robot laboratory, equipment use, reserves are increasing, manual management equipment information has been unable to adapt to daily management, such as data record error rate increased, the number of experiments increased, equipment loss and maintenance is not clearly defined. In order to ensure the safety and accuracy of the equipment, a system of equipment management systems was developed as a result of the conversion to the use of management systems for the recording and storage of information. The design of this system is a perfect robot laboratory equipment management system based on the development of web framework technology for equipment management functions. The back end of this system uses the Java language, the SSM framework as the main body, the database is built by MySQL relational database, the front-end page uses JSP, Bootstrap, jQuery and other technologies, and uses Eclipse project construction tools for system development. After a period of trial operation, the level of laboratory equipment management has been significantly improved. 展开更多
关键词 Device Management Java Spring SpringMVC MyBatis
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About the Optimized Design of the Parking Space on the Campus of a College 认领 引用
19
作者 Xin Wang Yunhui Wang Chong Hu 《American Journal of Computational Mathematics》 2020年第2期221-229,共9页
In recent years, with the large increase in the number of motor vehicles in colleges and universities and the lag in campus planning, the relative shortage of parking spaces on campus has become increasingly serious. ... In recent years, with the large increase in the number of motor vehicles in colleges and universities and the lag in campus planning, the relative shortage of parking spaces on campus has become increasingly serious. Taking Baoding College as an example, this article analyzes the current situation of static traffic on campus and finds out the problem of parking on campus through questionnaire surveys and field surveys. Analyze the growth trend of the number of motor vehicles based on the data, use the GM (1, 1) model and the linear fitting model to predict the number of motor vehicles in the future, and determine the size and layout of the parking lot based on the campus size, functional zoning, and road layout. The big campus-based parking system planning method based on big data can effectively solve the problems of small sample data, low accuracy, and poor timeliness of traditional methods, which improves the practicability and scientificity of planning results. 展开更多
关键词 Static Traffic Parking Space Planning GM (1 1) Linear Fitting
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Research on Factors of Linear Algebra Learning Effect 认领 引用
20
作者 Xin Wang Chong Hu Yunhui Wang 《Journal of Applied Mathematics and Physics》 2020年第7期1362-1373,共12页
Linear algebra has a very important application in physics and technical disciplines. This article conducted a questionnaire survey on the factors that affect the effect of linear algebra learning;the questionnaire co... Linear algebra has a very important application in physics and technical disciplines. This article conducted a questionnaire survey on the factors that affect the effect of linear algebra learning;the questionnaire contains several aspects of learning attitude, learning interest, learning methods, teaching methods, etc.;based on recycling data, cross chi-square test and multiple logistic regression analysis are used to obtain the factors that affect the effect of linear algebra learning. The research results show that: learning methods, learning attitudes, teaching methods and elementary algebra basics are the main factors that affect the learning effect of linear algebra;among them, there are positive correlations between teaching methods, learning methods, learning attitudes and learning effects;teaching methods, learning methods 3. The three principal components of learning attitude are positively correlated. Based on the research and analysis, the following conclusions are drawn: finding a suitable learning method for the college students and maintaining a positive learning attitude are effective means to improve the linear algebra learning effect of the college students;in teaching, it is recommended to advance with the times, the teaching content and teaching methods innovate to stimulate students’ interest in learning, thus improving the learning effect of college students’ linear algebra courses. 展开更多
关键词 Linear Algebra Learning Effect Influencing Factors
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