|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Comparison of Persulfate Activation and Fenton Reaction in Remediating an Organophosphorus Pesticides-Polluted Soil显示文摘Organophosphorus pesticides(OPs) are one of the most regular pollutants and frequently detected in the contaminated sites,so developing an efficient method for the treatment of OPs is highly required. The aim of the present study was to compare the effectiveness of persulfate(PS) activation and Fenton reaction in remediating the soil polluted with OPs. The polluted soil used in this study was sampled from an abandoned insecticide factory in Nantong, Jiangsu Province of China, mainly containing chloropyrifos(CP) and 4-bromo-2-chlorophenol(BCP, the raw material of profenofos) with total concentration of about 30 000 mg kg^(-1). The results showed that both BCP and CP were efficiently degraded by base activation of PS, and increasing the ratio of Na OH/PS enhanced CP degradation, but slightly decreased BCP degradation. The greatest degradation rates for CP and BCP were 92% and 97%, respectively,with 7.0 mol L^(-1) Na OH and 0.21 mol L^(-1) PS and a soil-to-liquid ratio of 1:1. Furthermore, ferrous iron activation of PS also degraded BCP efficiently, but only 60% of CP was degraded under the same reaction conditions. These results indicated that base activation of PS was more feasible than Fe^(2+) activation and Fenton reaction in remediating the soil polluted with OPs. The high degradation rate for CP may be linked to the initial hydrolyzation of CP by base to 3,5,6-trichloro-2-pyridinol, which can be further rapidly degraded by free radicals generated from base activation of PS. | ZHU Changyin ZHU Fengxiao WANG Fuwang GAO Juan FAN Guangping ZHOU Dongmei FANG Guodong | 2017 | Pedosphere2017，27，3： | 11 |
| 2 | Evaluation of three tracers for labeling distal cerebrospinal fluidcontacting neurons显示文摘It has been reported that distal cerebrospinal fluidcontacting neurons(dCSF-CNs)can be detected by immunohistochemical assay using cholera toxin subunit B-conjugated horseradish peroxidase(CBHRP).In the present study,another two methods with CB alone or CB-conjugated FITC(CB-FITC)were used,and the results from the three methods were compared.Adult Sprague-Dawley rats were randomly divided into three groups with CB-HRP,CB or CB-FITC.Tracers were diluted to 30%in artificial cerebrospinal fluid and injected separately(in a volume of 3μL)into the lateral ventricle.Animals from the CB-HRP and CB groups were perfused 48 h after surgery while animals from the CB-FITC group were perfused 1,3,6,12,24 or 48 h after surgery.The brain was sectioned(40μm)for immunofluorescence and five sections with positive neurons were selected from each rat for neuron counting.Three clusters of positive neurons in a'Y-like'distribution were detected ventral to the cerebral aqueduct of rats from the three groups.No significant difference was observed among the quantitative data.In the CB-FITC group,stable staining was detected even at 6 h after injection.Taken together,lateral ventricle injection of CB/CB-FITC is a useful method for labeling dCSFCNs in rats.The CB-FITC method makes dCSF-CNs labeling much simpler and more convenient. | Fang Zhou Jiayou Wang Hongxing Zhang He Liu Guangping Zhao Cuihua Zu Xiaoxing Lu Licai Zhang | 2013 | Neuroscience Bulletin2013，29，5： | 7 |
| 3 | Development of a widely targeted volatilomics method for profiling volatilomes in plants显示文摘Volatile organic compounds play essential roles in plant environment interactions as well as determining the fragrance of plants.Although gas chromatography-mass spectrometry-based untargeted metabolo-mics is commonly used to assess plant volatiles,it suffers from high spectral convolution,low detection sensitivity,a limited number of annotated metabolites,and relatively poor reproducibility.Here,we report a widely targeted volatilomics(WTV)method that involves using a“targeted spectra extraction”algorithm to address spectral convolution,constructing a high-coverage MS2 spectral tag library to expand volatile annotation,adapting a multiple reaction monitoring mode to improve sensitivity,and using regression models to adjust for signal drift.The newly developed method was used to profile the volatilome of rice grains.Compared with the untargeted method,the newly developed WTV method shows higher sensitivity(for example,the signal-to-noise ratio of guaicol increased from 4.1 to 18.8),high annotation coverage(the number of annotated volatiles increased from 43 to 132),and better reproducibility(the number of volatiles in quality control samples with relative standard deviation value below 30.0%increased from 14 to 92 after normalization).Using the WTV method,we studied the metabolic responses of tomato to environmental stimuli and profiled the volatilomes of different rice accessions.The results identified benzothiazole as a potential airborne signal priming tomato plants for enhanced defense and 2-nonanone and 2-heptanone as novel aromatic compounds contributing to rice fragrance.These case studies suggest that the widely targeted volatilomics method is more efficient than those currently used and may considerably promote plant volatilomics studies. | Honglun Yuan Guangping Cao Xiaodong Hou Menglan Huang Pengmeng Du Tingting Tan Youjin Zhang Haihong Zhou Xianqing Liu Ling Liu Yiding Jiangfang Yufei Li Zhenhuan Liu Chuanying Fang Liqing Zhao Alisdair R.Fernie Jie Luo | 2022 | Molecular Plant2022，15，1： | 2 |
| 4 | Groundwater pollution and human health risk based on Monte Carlo simulation in a typical mining area in Northern Anhui Province,China显示文摘The main objective of this study was to evaluate eight kinds of trace element pollutants in groundwater from a typical coal mine area,and carry out a corresponding health risk assessment for the local populace.To do this,34 shallow groundwater(SG)samples and 18 mid-layer groundwater(MG)samples were collected from the Sulin mining area.To minimize the uncertainties in the health risk assessment,this paper relied on Monte Carlo simulations and sensitivity analysis.The results revealed that Sr and Mn contents exceeded their corresponding WHO(Guidelines for drinking water quality,4th edn.Geneva,2011)guidelines and Chinese groundwater standards(GB/T14848-2017),while the other analyzed trace elements remain below those threshold values.The calculated hazard quotient and hazard index values for adults from ingestion exposure to SG and MG were well below the threshold limit of 1.Probabilistic simulations further show that the total cancer risk value above the limit of 1×10^(-6) is 0%for SG and 29.39%for MG.Sensitivity analysis identified the Sr and Cr contents as the most relevant element variables affecting the probabilistic non-carcinogenic and carcinogenic risk values in the model,respectively. | Huili Qiu Herong Gui Pei Fang Guangping Li | 2021 | International Journal of Coal Science & Technology2021，8，5： | 1 |
| 5 | Development and Application of Carbon-free Al_(2)O_(3)-MgO Dense Bricks for Steel Ladles显示文摘Carbon-free Al_(2)O_(3)-MgO dense bricks were produced by the pressing method,using tabular alumina,white fused alumina,alumina micro-powder as main raw materials,and inorganic powder as the binder.The comprehensive properties and performance in steel ladle side wall were made a comparison between Al_(2)O_(3)-MgO dense bricks and precast blocks.The results show that Al_(2)O_(3)-MgO dense bricks exhibit high dense structure and strength,as well as superior thermal shock resistance and better penetration and corrosion resistance to slag than precast blocks.While replacing precast blocks with dense bricks in 250 t steel ladle side wall in some domestic steel mills,the thickness of the metamorphic layer from slag penetration and the corrosion rate decrease evidently.The damage of dense bricks during service is mainly caused by the corrosion from molten steel and slag,and the structure spalling of the metamorphic layer also plays an important role. | LUO Ming FANG Binxiang WEI Guoping LIU Guangping SHEN Mingke SONG Yanan | 2022 | China's Refractories2022，31，2： | 0 |
| 6 | CFD Analysis of Fluid-Dynamic and Heat Transfer Effects Generated by a Fixed Electricity Transmission Line Interacting with an External Wind显示文摘The flow past a fixed single transmission conductor and the related heat transfer characteristics are investigated using computational fluid dynamics and a relevant turbulence model.After validating the method through comparison with relevant results in the literature,this thermofluid-dynamic problem is addressed considering different working conditions.It is shown that the resistance coefficient depends on the Reynolds number.As expected,the Nusselt number is also affected by Reynolds number.In particular,the Nusselt number under constant heat flux is always greater than that under a constant wall temperature. | Yajuan Jia Lisha Shang Jiangping Nan Guangping Hu Zhigang Fang | 2022 | Fluid Dynamics & Materials Processing2022，18，2： | 0 |
| 7 | Histopathological Observation of Parvovirus Infection in Foxes显示文摘In this study,histopathological changes in the heart,liver,spleen,lung,kidney,intestine,brain and other organs of foxes died of parvovirus infection were observed. According to the results,multiple organs of infected foxes were congested and hemorrhaged with tissue damage,inflammatory cell infiltration and a series of pathological changes,mainly exhibiting hepatic cell cord rupture,liver cell granular degeneration and fatty degeneration,small intestinal mucous membrane shedding,intestinal villi necrosis and shedding,severe hemorrhage of lamina propria with inflammatory cell infiltration,and severe small intestinal bleeding.This study laid a solid foundation for clinical diagnosis,prevention and treatment of parvovirus infection in foxes. | Fang XIANG Juan CHEN Minghe YU Guohui WANG Qiumei SHI Yanying ZHANG Yongmei SU Guangping GAO Guisheng GAO Fujin LI Lijuan ZHAO | 2015 | Agricultural Biotechnology2015，4，6： | 0 |
| 8 | Antibiotic Sensitivity Test and Detection of Sulfonamide Resistance Gene Sul2 in Escherichia coli Isolates from Swine显示文摘[Objective] This study aimed to analyze antibiotic sensitivity and detect sulfonamide resistance gene Sul2 in 17 Escherichia coli isolates from swine.[Method]The antibiotic sensitivity of 17 E.coli isolates from swine was analyzed with Kirby-Bauer disk diffusion method.Sulfonamide resistance gene Sul2 was detected by PCR amplification with the extracted genomic DNA as a template.[Result] The 17 swine-derived E.coli isolates from different regions were resistant to various antibiotics and exhibited different multi-antibiotic resistance phenotypes,including nine isolates resistant to sulfamethoxazole,seven isolates resistant to oxacillin,ten isolates resistant to cefazolin and eight isolates resistant to erythromycin.Sulfonamide resistance gene Sul2 was successfully amplified from genomic DNA of E.coli isolates.The PCR results were basically consistent with antibiotic resistance phenotypes of these strains.[Conclusion] Sul2 gene was widespread in swine-derived E.coli,which was closely associated with sulfonamide resistance phenotypes of E.coli. | Yanying ZHANG Fang XIANG Rui GUO Zhaoxing ZHANG Qiumei SHI Yuqin LIU Cairan YANG Zongze YANG Guangping GAO Guisheng GAO Zhi PENG Xun SUO | 2016 | Agricultural Biotechnology2016，5，2： | 0 |
| 9 | Developing Statistical Modellings to Investigate the Internal Drivers for the Trend of Output Values in the Manufacturing Industry:Evidence from Chinese Enterprises显示文摘The manufacturing industry is an important pillar of the national economy.It is of vital importance to develop statistical modellings in order to quantify the relationship between potential internal drivers and the trend of output values in the manufacturing industry.However,only a few statistical modellings have been established to investigate such associations.This study developed the correlation coefficient model and generalized linear model(GLM)to measure the single and interactive effects of the internal drivers on the changes of the output values.For the GLM,different predictive variables were developed to fit into the dataset,and the performance of the models were compared using fitness parameters.Furthermore,an industry survey dataset for 1,180 manufacturing enterprises in 2020 was used to validate the models.The use of the GLM combining land area,number of employees,scientific research input,and labor productivity may have a great potential to bolster capacity in monitoring and predicting the trend of output values in the manufacture industry. | Yuzhou Zhang Guang Gao Lidan Shou Dun Wu Guangping Fang Hua Sun | 2021 | Proceedings of Business and Economic Studies2021，4，5： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员