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“重评”即脂砚斋“第二次评”——与蔡义江先生商榷 被引量:1
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作者 张义春 《内江师范学院学报》 2016年第7期26-31,共6页
《脂砚斋重评石头记》,是《石头记》早期三个抄本——甲戌本、己卯本、庚辰本的题名。蔡义江先生认为,"重评"或"至脂砚斋甲戌抄阅再评",都是脂砚斋对诸公已有过的评而言的,并非指他自己的第二次评。在各位评点者中... 《脂砚斋重评石头记》,是《石头记》早期三个抄本——甲戌本、己卯本、庚辰本的题名。蔡义江先生认为,"重评"或"至脂砚斋甲戌抄阅再评",都是脂砚斋对诸公已有过的评而言的,并非指他自己的第二次评。在各位评点者中,脂砚斋居于第二序列,并不清楚曹雪芹幼年情况。实际上,"重评"即"第二次评","重评"是以甲戌为分界而有的一个概念,甲戌本中存在部分著作权可考之双行夹批,可证脂砚斋曾经"初评"毫无疑义。脂砚斋与诸公评点目的不同,但与诸公一样知晓曹雪芹少年时期的情况,否定脂砚斋对曹雪芹的知情权实质是挑战脂砚斋诚实的品格。 展开更多
关键词 脂砚斋 “重评” 第二次 甲戌分界
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科学论证的歧途——就所谓“重评型”脂批与欧阳健先生商榷
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作者 严安政 《渭南师范学院学报》 2003年第6期41-44,57,共5页
本文逐条批驳了欧阳健《关于脂批的“针对性”和锋芒所向》一文对《红楼梦》中所谓“重评型”脂批的解释及其有关结论 ,指出欧阳健为了论证其“程前脂后”的观点 ,已经滑入了牵强求证的末路。
关键词 科学论证 “重型”脂批 欧阳健 《红楼梦》 商榷 文学批
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评西方“重评派”对1917年及其以后列宁思想的认识
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作者 俞良早 《武汉交通管理干部学院学报》 1999年第2期60-64,共5页
本文针对西方“重评派”关于列宁发动十月革命是因为他对欧洲革命前景抱无根据的乐观态度,他未预料和未解决十月革命后出现的许多新问题的观点提出。列宁充分地认识到19世纪末20世纪初革命发生和发展的规律,认识到了十月革命的客观必... 本文针对西方“重评派”关于列宁发动十月革命是因为他对欧洲革命前景抱无根据的乐观态度,他未预料和未解决十月革命后出现的许多新问题的观点提出。列宁充分地认识到19世纪末20世纪初革命发生和发展的规律,认识到了十月革命的客观必然性。十月革命胜利后,他提出一系列新的理论和政策,解决了俄国社会主义发展的战略,处理民族问题的办法,向社会主义过渡的途径等问题。 展开更多
关键词 “重派” 1917年 列宁思想 俄国 十月革命
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中国现代文学史编撰中的“史与论”问题 被引量:1
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作者 杨庆祥 《渤海大学学报(哲学社会科学版)》 2009年第5期36-42,共7页
"史"与"论"的关系一直是中国现代文学史编撰中一个关键的问题,通过对80年代初中国现代文学"重评"的考察,可以演示出"史"、"论"问题与文学史建制和意识形态之间的复杂关系。
关键词 中国现代文学史 “重评” “史”与“论”
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Scales,methods and technical analysis of China's residential environment evaluation 被引量:2
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作者 李绥 石铁矛 周乐 《Journal of Southeast University(English Edition)》 EI CAS 2009年第2期274-277,共4页
To improve China's residential environment evaluation system and enhance its guiding role, current research results are analyzed and summarized from three aspects including research scales, evaluation methods and app... To improve China's residential environment evaluation system and enhance its guiding role, current research results are analyzed and summarized from three aspects including research scales, evaluation methods and applied technology by means of comparison, induction and empirical application. The guiding role of the current macro-scale evaluation system of urban planning and construction is generally not obvious, whereas the guiding role of medium and micro-scale systems to the improvement of residential environments is improving. There are diversified methods for determining the threshold values and the weights of indices in China's evaluation system. For instance, the analytic hierarchy process(AHP) method is adopted to determine the weights of indices. The advantages and disadvantages of the method are analyzed on the basis of empirical calculation. In the course of comprehensive analyses, a nonlinear model can reflect interactions among indices more than a linear model; the evaluation model under the ARCGIS platform prevails since it combines space and attribute, and it has intuitive results. So far, the methodological system of China's residential environment evaluation has not been established; its subject coverage and research category should be expanded, and its guiding role should be enhanced. 展开更多
关键词 residential environment evaluation system SCALE threshold value WEIGHT evaluation model geographic information system (GIS)
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Pollution status and potential ecological risk assessment in the surface sediments of the Yellow River estuary 被引量:3
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作者 张亚南 贺青 +1 位作者 暨卫东 张琦 《Marine Science Bulletin》 CAS 2015年第1期61-70,共10页
Based on the "Project 908" survey data in 2006--2007 on surface sediments of the sea area adjacent to the Yellow River estuary, the research was conducted on the concentration distribution characteristics of heavy m... Based on the "Project 908" survey data in 2006--2007 on surface sediments of the sea area adjacent to the Yellow River estuary, the research was conducted on the concentration distribution characteristics of heavy metals in surface sediments of the estuary, which show that the mean contents of seven heavy metals (Cu, Pb, Zn, Cd, Cr, Hg, As) in the Yellow River estuary and its surrounding areas all comply with the Level-I of National Marine Sediments Quality Standard of China. Statistically significant correlation between the elements Cu-Cd, Pb-Cr and Cr-As in sediments indicates that the two heavy metals in each group may respectively have similar geochemical properties and sources. By using the Potential Ecological Risk Index (PERI) proposed by Hakanson, the assessment shows that the potential ecological risks in the estuary surface sediments are mainly attributed to Cd and Hg. The biological toxicity effects are assessed with the biological effects of concentration method, resulting in a conclusion that the adverse effects of As on organisms in the estuary marine environment occasionally occur, in contrast, Cu, Pb, Zn, Cd, Cr and Hg will not generate adverse biological effects on a short and medium time scale. 展开更多
关键词 Yellow River estuary heavy metals pollution risk assessment
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Distribution Characteristic and Potential Ecological Risk Assessment of Heavy Metals in Latosol in the Western Area of Hainan Island 被引量:1
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作者 王鹏 赵志忠 +2 位作者 王军广 张忠伟 张子川 《Agricultural Science & Technology》 CAS 2010年第11期145-149,共5页
[Objective] The paper was to carry out ecological geochemical survey and ecological risk assessment on the heavy metals in latosol in western area of Hainan Island.[Method] The contents of six heavy metals including C... [Objective] The paper was to carry out ecological geochemical survey and ecological risk assessment on the heavy metals in latosol in western area of Hainan Island.[Method] The contents of six heavy metals including Cr,Cu,Zn,As,Cd and Pb in latosol in western area of Hainan Island were analyzed.Single-factor index method and Hakanson ecological risk index method were used to evaluate the integrated pollution effect of heavy metals in latosol.[Result] The average contents of Cr,Cu,Zn,As,Cd and Pb in latosol in western area of Hainan Island were 65.57,35.16,93.56,8.50,0.24 and 79.29 mg/kg,respectively.The major pollution factor of heavy metal was Pb.The sequence of influence factors of various heavy metals was PbCu = ZnCrAsCd.The potential ecological risk coefficient of various heavy metals was PbCdCuAsCrZn.The average value of potential ecological risk index(RI)was 45.14,belonging to low ecological risk range.[Conclusion] The heavy metal pollution in latosol in western area of Hainan Island belongs to slight pollution. 展开更多
关键词 Hainan Island LATOSOL Heavy metal Ecological risk assessment
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Quality Synthetic Evaluation of Urea Formaldehyde Foam Substrate in Turf Establishment 被引量:2
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作者 武良 徐秋明 谷佳林 《Agricultural Science & Technology》 CAS 2011年第1期133-137,共5页
[Objective]The aim of this study was to explore the feasibility of three kinds of urea formaldehyde foam substrate in tall fescue establishment as well as to study on evaluation of turf quality.[Method]The visual esti... [Objective]The aim of this study was to explore the feasibility of three kinds of urea formaldehyde foam substrate in tall fescue establishment as well as to study on evaluation of turf quality.[Method]The visual estimates,ecological quality estimates and utility quality estimates were used as the 1st level indicators,and the density,color,texture,uniformity,green period,cover degree,biomass,emergence energy,growth rate and turf-forming time were used as the corresponding 2nd level indicators.With T.L.Satty's method Analytic Hierarchy Process(AHP) and the fuzzy synthesis evaluation method,the weight ratio of matrix was obtained and the synthetic evaluation result was accorded with facts,then it could be regarded as the satisfying value of weight.[Result]The quality of three covering soil treatments was better than that of uncovering treatment and conventional treatment,the quality synthetic evaluation of F1 was the best,which was about 0.770.[Conclusion]Urea formaldehyde foam substrate showed high quality for turf establishment,which could be further spread and applied. 展开更多
关键词 Urea formaldehyde foam substrate Turf establishment Turf quality Synthetic evaluation
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Comprehensive ecological risk assessment for heavy metal pollutions in three phases in rivers 被引量:4
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作者 张颖 周军 +3 位作者 高凤杰 张宝杰 马彪 李立清 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2015年第10期3436-3441,共6页
Literature lacked in providing a comprehensive research on heavy metal detection in aquatic, biological and sedimentary states of rivers. The present study was imparted with all these three components of the river. He... Literature lacked in providing a comprehensive research on heavy metal detection in aquatic, biological and sedimentary states of rivers. The present study was imparted with all these three components of the river. Heavy metal toxicity or pollution index was used as a tool for ecological risk assessment by considering the single state studies conducted by many researchers. An intensive ecological risk assessment model was constructed and heavy metals were indicated as a serious threat to the environment. The model was applied to determining five toxic heavy metals in three states of the Songhua River. According to the ecological risk index, heavy metal pollution in three phases was categorized as aquatic〉biological〉sedimentary, while the overall descending order of heavy metal ecological risk index was as Cd〉Hg〉As〉Pb〉Cr. Cd and Hg were selected as the priority pollutants of Songhua River. 展开更多
关键词 comprehensive ecological risk assessment priority pollutants selection heavy metal Songhua River
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An attribute recognition model based on entropy weight for evaluating the quality of groundwater sources 被引量:21
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作者 CHEN Suo-zhong WANG Xiao-jing ZHAO Xiu-jun 《Journal of China University of Mining and Technology》 EI 2008年第1期72-75,共4页
In our study, entropy weight coefficients, based on Shannon entropy, were determined for an attribute recognition model to model the quality of groundwater sources. The model follows the theory previously proposed by ... In our study, entropy weight coefficients, based on Shannon entropy, were determined for an attribute recognition model to model the quality of groundwater sources. The model follows the theory previously proposed by Chen Q S. In the model, firstly, the author establishes the attribute space matrix and determines the weight based on Shannon entropy theory; secondly, calculates attribute measure; thirdly, evaluates that with confidence criterion and score criterion; finally, an application example is given. The results show that the water quality of the groundwater sources for the city comes up to the grade II or III standard. There is no pollution that obviously exceeds the standard and the water can meet people’s needs .The results from an evaluation of this model are in basic agreement with the observed situation and with a set pair analysis (SPA) model. 展开更多
关键词 water quality evaluation groundwater sources entropy weigh attribute recognition model
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Image Zernike Moments Shape Feature Evaluation Based on Image Reconstruction 被引量:2
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作者 LIU Maofu HE Yanxiang YE Bin 《Geo-Spatial Information Science》 2007年第3期191-195,共5页
The evaluation approach to the accuracy of the image feature descriptors plays an important role in image feature extraction. We point out that the image shape feature can be described by the Zernike moments set while... The evaluation approach to the accuracy of the image feature descriptors plays an important role in image feature extraction. We point out that the image shape feature can be described by the Zernike moments set while briefly introducing the basic concept of the Zernike moment. After talking about the image reconstruction technique based on the inverse transformation of Zernike moment, the evaluation approach to the accuracy of the Zernike moments shape feature via the dissimilarity degree and the reconstruction ratio between the original image and the reconstructed image is proposed. The experiment results demonstrate the feasibility of this evaluation approach to image Zernike moments shape feature. 展开更多
关键词 feature evaluation Zernike moment image reconstruction reconstruction ratio
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Evaluation of body weight of sea cucumber Apostichopus japonicus by computer vision 被引量:1
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作者 刘辉 许强 +2 位作者 刘石林 张立斌 杨红生 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2015年第1期114-120,共7页
Apostichopus japonicus(Holothuroidea,Echinodermata) is an ecological and economic species in East Asia.Conventional biometric monitoring method includes diving for samples and weighing above water,with highly variable... Apostichopus japonicus(Holothuroidea,Echinodermata) is an ecological and economic species in East Asia.Conventional biometric monitoring method includes diving for samples and weighing above water,with highly variable in weight measurement due to variation in the quantity of water in the respiratory tree and intestinal content of this species.Recently,video survey method has been applied widely in biometric detection on underwater benthos.However,because of the high flexibility of A.japonicus body,video survey method of monitoring is less used in sea cucumber.In this study,we designed a model to evaluate the wet weight of A.japonicus,using machine vision technology combined with a support vector machine(SVM) that can be used infield surveys on the A.japonicus population.Continuous dorsal images of free-moving A.japonicus individuals in seawater were captured,which also allows for the development of images of the core body edge as well as thorn segmentation.Parameters that include body length,body breadth,perimeter and area,were extracted from the core body edge images and used in SVM regression,to predict the weight of A.japonicus and for comparison with a power model.Results indicate that the use of SVM for predicting the weight of 33 A.japonicus individuals is accurate(R^2=0.99) and compatible with the power model(R^2=0.96).The image-based analysis and size-weight regression models in this study may be useful in body weight evaluation of A.japonicus in lab and field study. 展开更多
关键词 Apostichopusjaponicas wet weight computer vision support vector machine
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Evaluation of latent links between irritable bowel syndrome and sleep quality 被引量:17
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作者 Massimo Bellini Angelo Gemignani +9 位作者 Dario Gambaccini Simona Toti Danilo Menicucci Cristina Stasi Francesco Costa Maria Gloria Mumolo Angelo Ricchiuti Remo Bedini Nicola de Bortoli Santino Marchi 《World Journal of Gastroenterology》 SCIE CAS CSCD 2011年第46期5089-5096,共8页
AIM:To examine the links between quality of sleep and the severity of intestinal symptoms in irritable bow-el syndrome(IBS).METHODS:One hundred and forty-two outpatients(110female,32 male)who met the Rome Ⅲ criteria ... AIM:To examine the links between quality of sleep and the severity of intestinal symptoms in irritable bow-el syndrome(IBS).METHODS:One hundred and forty-two outpatients(110female,32 male)who met the Rome Ⅲ criteria for IBS with no psychiatric comorbidity were consecutively en-rolled in this study.Data on age,body mass index(BMI),and a set of life-habit variables were recorded,and IBS symptoms and sleep quality were evaluated using the questionnaires IBS Symptom Severity Score(IBS-SSS)and Pittsburgh Sleep Quality Index(PSQI).The associa-tion between severity of IBS and sleep disturbances was evaluated by comparing the global IBS-SSS and PSQI score(Pearson's correlation and Fisher's exact test)and then analyzing the individual items of the IBS-SSS and PSQI questionnaires by a unitary bowel-sleep model based on item response theory(IRT).RESULTS:IBS-SSS ranged from mild to severe(120-470).The global PSQI score ranged from 1 to 17(median 5),and 60 patients were found to be poor sleepers(PSQI>5).The correlation between the global IBS-SSS and PSQI score indicated a weak association(r=0.2 and 95% CI:-0.03 to 0.35,P<0.05),which becomes stronger using our unitary model.Indeed,the IBS and sleep disturbances severities,estimated as latent variables,resulted significantly high intra-subject cor-relation(posterior mean of r=0.45 and 95% CI:0.17 to 0.70,P<0.05).Moreover,the correlations between patient features(age,sex,BMI,daily coffee and alcohol intake)and IBS and sleep disturbances were also ana-lyzed through our unitary model.Age was a signif icant regressor,with patients≤50 years old showing more severe bowel disturbances(posterior mean=-0.38,P<0.05)and less severe sleep disturbances(posterior mean=0.49,P<0.05)than older patients.Higher daily coffee intake was correlated with a lower sever-ity of bowel disturbances(posterior mean=-0.31,P<0.05).Sex(female)and daily alcohol intake(modest)were correlated with less severe sleep disturbances.CONCLUSION:The unitary bowel-sleep model based on IRT revealed a strong positive correlation between the severity of IBS symptoms and sleep disturbances. 展开更多
关键词 Irritable bowel syndrome Sleep disorders Item response theory model Bayesian model
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Evaluation of left atrial remodelling following percutaneous left atrial appendage closure 被引量:1
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作者 Zakaria Jalal Xavier Iriart +4 位作者 Marie-Lou Dinet Olivier Comeloup Xavier Pillois Hubert Cochet Jean-Benoit Thambo 《Journal of Geriatric Cardiology》 SCIE CAS CSCD 2017年第8期496-500,共5页
Atrial fibrillation prevalence is increasing with age, reaching up to 5% of patients older than 65 years, and is associated with 20%-30% of stroke episodes in that population.
关键词 Atrial fibrillation Left atrial appendage Left atrial remodeling Percutaneous closure
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Heavy metals leaching in bottom ash and fly ash fractions from industrial-scale BFB-boiler for environmental risks assessment 被引量:2
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作者 Risto POYKIO Mikko MAKELA +2 位作者 Gary WATKINS Hannu NURMESNIEMI OUi DAHL 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2016年第1期256-264,共9页
The bottom ash and fly ash from the co-combustion of wood residues and peat at a bubbling fluidised bed boiler(296 MW) contained only quartz(SiO_2), microcline(KAl Si_3O_8) and albite(NaAlSi_3O_8). Thus, X-ray... The bottom ash and fly ash from the co-combustion of wood residues and peat at a bubbling fluidised bed boiler(296 MW) contained only quartz(SiO_2), microcline(KAl Si_3O_8) and albite(NaAlSi_3O_8). Thus, X-ray powder diffraction(XRD) was not useful for clarifying the difference in the release of associated heavy metals from ash matrices. In order to assess the release of heavy metals from ashes under changing environmental conditions, they were sequentially extracted and fractionated by the BCR-procedure into acid soluble/exchangeable(CH_3COOH), reducible(NH_2OH-HCl) and oxidizable(H_2O_2/CH_3COONH_4) phases. The CH_3 COOH extractable fraction in conjunction with the total heavy metals concentrations were used to calculate the risk assessment code values for heavy metals leaching from the ash matrix. The leaching studies indicate that the heavy metals in the bottom ash and fly ash are bound to different fractions with different strengths. From the environmental and utilization perspectives, heavy metals in ashes posed different levels of environmental contamination risk. Only As in the bottom ash posed a very high risk. High risk metals were Cd in the bottom ash as well as As, Cd and Se in the fly ash. 展开更多
关键词 bottom ash fly ash BCR extraction heavy metals risk assessment code
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Surface water quality and potential health risk assessments in Changsha-Zhuzhou-Xiangtan section of Xiangjiang River, China 被引量:7
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作者 JIANG Dong-yi YANG Jin-qin +3 位作者 WANG Yun-yan LIAO Qi LONG Zhe ZHOU San-yang 《Journal of Central South University》 SCIE EI CAS CSCD 2019年第12期3252-3260,共9页
The Changsha-Xiangtan-Zhuzhou City Group is a heavy industrial district and accepted as the serious pollution area in the Xiangjiang River basin.In this study,7 metals(Pb,Hg,Cd,As,Zn,Cu and Se)and the river water qual... The Changsha-Xiangtan-Zhuzhou City Group is a heavy industrial district and accepted as the serious pollution area in the Xiangjiang River basin.In this study,7 metals(Pb,Hg,Cd,As,Zn,Cu and Se)and the river water quality parameters including pH,dissolved oxygen(DO),Escherichia coli(E.coli),potassium permanganate index(CODMn),dichromate oxidizability(CODCr),five-day biochemical oxygen demand(BOD5),ammonia nitrogen(NH4+-N),total nitrogen(TN),total phosphorus(TP)and fluoride(F)in 18 sampling sites of the Changsha-Xiangtan-Zhuzhou section are monthly monitored in 2016,which is the year to step into the second stage of the“Xiangjiang River Heavy Metal Pollution Control Implementation Plan”.It is found that E.coli,TN and TP are the main pollutants in the Changsha-Zhuzhou-Xiangtan section,and the pollution of heavy metal is not serious but As with potential risk to local people especially children should be concerned.In addition,Xiangtan city is mainly featured with heavy metal pollution,while Zhuzhou and Changsha city are both featured with other pollutants from municipal domestic sewage. 展开更多
关键词 Xiangjiang River surface water heavy metal water quality assessment human health risk assessment
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Remediation Effects of Soil Conditioners for CdPolluted Paddy Fields 被引量:1
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作者 XIE Yun-he HUANG Bo-jun +3 位作者 JI Xiong-hui TIAN Fa-xiang WU Jia-mei GUAN Di 《Agricultural Science & Technology》 CAS 2019年第3期31-38,共8页
A field experiment was conducted to evaluate the remediation effects of 14 soil conditioners for Cd-polluted paddy fields contrasted with conventional fertilization and liming.The results showed that soil conditioners... A field experiment was conducted to evaluate the remediation effects of 14 soil conditioners for Cd-polluted paddy fields contrasted with conventional fertilization and liming.The results showed that soil conditioners had no significant impact on rice yields.Though the soil conditioners had stable effects on decreasing the Cd content in grains,the effects varied with the category of conditioners.In general,The Cd contents of early rice and late rice were reduced by 22.65%~44.24%and 15.20%~63.03%,respectively.Additionally,the stem and leaves showed the same decreasing tendency.Cluster analysis suggested that soil conditioners can be divided into three categories:the first category increases the soil pH to inhibit the Cd activity and cut down the Cd translocation from soil to stem and leaves,which is most efficient in the reduction of Cd content in rice grains;the other category relies on the antagonism or co-precipitation between Cd and certain elements to inhibit the translocation and redistribution of Cd from rice stems to grains,providing a common effect on Cd reduction;the last category can be seen as a combination of the former two categories from the perspective of its functional mechanism and it has a moderate effect on the reduction of Cd contents in rice grains. 展开更多
关键词 Soil conditioner Cd-contaminated Paddy soil Effectiveness evaluation Heavy metal
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Investigation and Evaluation on Soil Heavy Metal Contents in Fruit Producing Area in Baise City,Guangxi Zhuang Autonomous Region 被引量:1
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作者 Yuyi HUANG Guifen CHEN +2 位作者 Yanfei HUANG Liumei XIONG Zhenwei CHEN 《Agricultural Science & Technology》 CAS 2017年第1期64-66,共3页
[Objective] This study was conducted to investigate heavy metal conditions in fruit producing area in Baise City, Guangxi Province. [Method] Heavy metal contents in 106 soil samples collected from fruit producing area... [Objective] This study was conducted to investigate heavy metal conditions in fruit producing area in Baise City, Guangxi Province. [Method] Heavy metal contents in 106 soil samples collected from fruit producing area in Youjiang District, Baise City, Guangxi Province were analyzed, and soil heavy metal pollution condition in this area was estimated applying single factor index method and Hakanson' potential ecological risk index method with reference to the second grade of National Soil Environmental Quality Standard and soil background values of this area. [Result] According to the second grade of National Soil Environmental Quality Standard, soil heavy metals in this fruit producing area is at the level of no pollution; and the total potential ecological risk pollution risk (RI) of soil heavy metals was 97.7, indicating no risk. [Conclusion] The fruit producing area in Baise City, Guangxi Province is free of heavy metal pollution. 展开更多
关键词 Fruit producing area SOIL Heavy metal content EVALUATION
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Assessment of Cu, Pb and Hg Contamination in Bottom Sediments Of Surface Water in XuZhou 被引量:1
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作者 王晓 韩宝平 朱雪强 《Journal of China University of Mining and Technology》 2004年第1期70-72,共3页
Pollution of heavy metals Cu,Pb and Hg is assessed using geo-accumulation index in this paper. The result shows that the bottom sediments of surface water in Xuzhou is polluted by these heavy metals to deferent degree... Pollution of heavy metals Cu,Pb and Hg is assessed using geo-accumulation index in this paper. The result shows that the bottom sediments of surface water in Xuzhou is polluted by these heavy metals to deferent degrees, of which the Jinma River is the most serious, and then the Kuihe River, the abandoned Yellow River, and the Jinghang Canal. The Yunlong Lake has also been polluted by Hg. The three kinds of heavy metals in the order of concentration is Hg>Cu>Pb. The pollution degree and the type of element is closely related with industrial structure in Xuzhou. 展开更多
关键词 srface water bottom sediment heavy metal contamination index of Geo-accumulation
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Mining Weights of Land Evaluation Factors Based on Cloud Model and Correlation Analysis 被引量:17
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作者 HU Shiyuan LI Deren +1 位作者 LIU Yaolin LI Deyi 《Geo-Spatial Information Science》 2007年第3期218-222,共5页
The veracity of land evaluation is tightly related to the reasonable weights of land evaluation fac- tors. By mapping qualitative linguistic words into a fine-changeable cloud drops and translating the uncertain facto... The veracity of land evaluation is tightly related to the reasonable weights of land evaluation fac- tors. By mapping qualitative linguistic words into a fine-changeable cloud drops and translating the uncertain factor conditions into quantitative values with the uncertain illation based on cloud model, and then, inte- grating correlation analysis, a new way of figuring out the weight of land evaluation factors is proposed. It may solve the limitations of the conventional ways. 展开更多
关键词 cloud models correlation analysis land evaluation factor weight data mining
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