Research journal of chemical and environmental sciences最新文献_第7页

Ecorestoration of Coal Mine Overburden Dump to Prevent Environmental Degradation: A Review 煤矿上覆排土场生态修复防治环境退化研究进展

Research journal of chemical and environmental sciences Pub Date : 2015-07-01 DOI: 10.3923/RJES.2015.307.319

Anup K. Gupta, B. Paul

{"title":"Ecorestoration of Coal Mine Overburden Dump to Prevent Environmental Degradation: A Review","authors":"Anup K. Gupta, B. Paul","doi":"10.3923/RJES.2015.307.319","DOIUrl":"https://doi.org/10.3923/RJES.2015.307.319","url":null,"abstract":"Mine reclamation, ecorestoration and rehabilitation are some of the key techniques applied for the betterment of the mining area. Various types of mine waste are generated in mining (coal and other minerals exploration). These mine waste are probably dumped on the same site due to lack of any proper waste management system that will affects the environment vigorously. Ground pollution due to leaching of heavy metals, surface water pollution due to drainage of polluted water, air pollution due to simultaneous combustion of mine wastes are some of the important environmental problems in mining sites. Coal mining wastes in form of waste rock or Over Burden (OB) material produced from coal mining is traditionally dumped over the valuable lands India and worldwide. These OB dump pollutes the air, soil, water and landscape by dust, leachate and self-ignition due to lack of suitable ecorestoration practices. However, the impact of different disposal and treatment of coal mining wastes on environment and farmland has not been probed in detail. Bioaccumulation of heavy metals is another threat to the nearby living biota, it may be lethal too. Bioremediation, phytoremediation are some other valuable the techniques, which is frequently applied to various mine sites and shown positive outcome. In some instances poor mineral condition of this waste is not suitable for such type of waste management. Reutilization and reduction of these mine waste is important in this concern. Utilization of mine OB in mine backfilling might be good enough to reduce the volume of this waste.","PeriodicalId":92133,"journal":{"name":"Research journal of chemical and environmental sciences","volume":"82 1","pages":"307-319"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77659923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 15

Removal of Dexamethasone from Aqueous Solutions using Sono-Nanocatalysis Process 超声纳米催化法去除水溶液中的地塞米松

Research journal of chemical and environmental sciences Pub Date : 2015-07-01 DOI: 10.3923/RJES.2015.320.331

H. Rahmani, K. Rahmani, A. Rahmani, M. Zare

引用次数: 6

Evaluation of Soybean Genotypes (Glycin Max L) to Drought Tolerance at Germination Stage 大豆基因型(Glycin Max L)萌发期抗旱性评价

Research journal of chemical and environmental sciences Pub Date : 2015-07-01 DOI: 10.3923/RJES.2015.349.354

S. Salimi

{"title":"Evaluation of Soybean Genotypes (Glycin Max L) to Drought Tolerance at Germination Stage","authors":"S. Salimi","doi":"10.3923/RJES.2015.349.354","DOIUrl":"https://doi.org/10.3923/RJES.2015.349.354","url":null,"abstract":"Drought is one of the limiting factors for better and higher yield of plants. New variety selection is difficult due to the complex mechanism of drought resistance. Soybean is an important legume crop, known for its high quality protein and oil content, which selecting the varieties resistant to drought stress will increase the number of green seedlings and yield. For this purpose, the plants were grown in a completely randomized design with three replications as a factorial with two factors of drought stress and genotype. The genotype factor had 3 levels (Hamilton, M7 and L17) and the drought stress factor had 4 levels (0, -3, -6 and -9 bar). The experiment was done in Laboratory of Agronomy, Faculty of Agriculture Science, Guilan University in 2009 and traits were measured too. Analysis of variance showed that there were significant differences among genotypes for percent of germination. The different levels of drought stress showed significant differences for all studied traits. Genotype×drought interactions were significant for traits germination rate, shoot height and root height. At all levels of drought stress, growth parameters were reduced and the decreasing trend was observed in them but this reduction in the cultivars and traits were different. Out of these three genotypes, M7 genotype showed better response to drought stress in the germination stage and germination index had higher values than the other two genotypes. Here, the sensitive cultivars of all germination indexes were Hamilton. Also, results showed that there is a probability of drought conditions in the germination stage and non use of the stress-sensitive seeds is better and also Seeding quality in stress conditions must be considered.","PeriodicalId":92133,"journal":{"name":"Research journal of chemical and environmental sciences","volume":"19 1","pages":"349-354"},"PeriodicalIF":0.0,"publicationDate":"2015-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84266453","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Sequential Postemergence Applications for the Control of Yellow Nutsedge in Bermudagrass Turf 苗期序法防治百慕大草皮上黄缕草的研究

Research journal of chemical and environmental sciences Pub Date : 2015-07-01 DOI: 10.3923/RJES.2015.342.348

M. Sadi, S. Saeedipour

引用次数: 0

Effect of Different Growing Media on the Growth and Development of Zinnia (Zinnia elegans) under the Agro-Climatic Condition of Jiroft Jiroft农业气候条件下不同培养基对百日草生长发育的影响

Research journal of chemical and environmental sciences Pub Date : 2015-06-01 DOI: 10.3923/RJES.2015.302.306

A. S. Sardoei, Mojghan Shahdadneg

{"title":"Effect of Different Growing Media on the Growth and Development of Zinnia (Zinnia elegans) under the Agro-Climatic Condition of Jiroft","authors":"A. S. Sardoei, Mojghan Shahdadneg","doi":"10.3923/RJES.2015.302.306","DOIUrl":"https://doi.org/10.3923/RJES.2015.302.306","url":null,"abstract":"Zinnia elegans, an annual flowering plant of the genus Zinnia, is one of the best known zinnias. Present study was conducted to evaluate the effect of different growing media on the growth and flowering of Zinnia elegans. Seven different growth media including coconut compost, silt, soil loam, leaf manure, (leaf manure+silt; 2:1), (coconut compost+soil loam; 1:1) and (leaf manure+soil loam+silt; 1:1:1) were used for growing Zinnia. The experiment was laid out in Complete Randomized Design (CRD) giving equal importance to treatments. Number of flowers, length of lateral branches, number of lateral branches, stem diameter, plant height (cm), diameter of flower, vase life (day) and fresh and dry root, shoot and total were determined. The present study confirms the fact that selection of the appropriate medium of growth for potted flowering plants in this case Zinnia elegans was very important from aesthetic and marketing point of view. The medium must ensure the production of plants of the required quality on cost effective basis. In the present study, leaf manure produced significantly the maximum vase life and diameter of flower while the maximum vase life and diameter of flower was obtained with mix (coconut compost+soil loam; 1:1).","PeriodicalId":92133,"journal":{"name":"Research journal of chemical and environmental sciences","volume":"81 1","pages":"302-306"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80977343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Assessing the impact of climate variability on rice phenology. 评估气候变率对水稻物候的影响。

Research journal of chemical and environmental sciences Pub Date : 2015-06-01 DOI: 10.3923/RJES.2015.296.301

M. Modarresi, Mohammad Ali Nikpey, Mehdi Mikpey

引用次数: 10

Cardiovascular Risks and Impaired Lipid Metabolism in Asymptomatic Petroleum Depot Workers in Calabar Metropolis, Nigeria 尼日利亚卡拉巴尔大都会无症状石油仓库工人的心血管风险和脂质代谢受损

Research journal of chemical and environmental sciences Pub Date : 2015-06-01 DOI: 10.3923/RJES.2015.270.279

Anthony Cemaluk C. Egbuonu, Daniel C. Nkwazema, L. Ezeanyika

{"title":"Cardiovascular Risks and Impaired Lipid Metabolism in Asymptomatic Petroleum Depot Workers in Calabar Metropolis, Nigeria","authors":"Anthony Cemaluk C. Egbuonu, Daniel C. Nkwazema, L. Ezeanyika","doi":"10.3923/RJES.2015.270.279","DOIUrl":"https://doi.org/10.3923/RJES.2015.270.279","url":null,"abstract":"The health concerns about working in a petroleum depot without wearing a Personal Protective Equipment (PPE) warranted this study. The anthropometric, lipid profile and blood pressure status were assessed by standard methods in asymptomatic adult male depot workers (n = 64) and male university students (n = 64), in Calabar metropolis, Nigeria. The concentration (mmol LG1) of total cholesterol (5.21±0.90), triacylglycerol (1.23±0.20) and very low density lipoprotein (0.56±0.19) respectively in the serum of the depot workers were significantly (p<0.05) higher than in the control (5.09±0.04, 1.15±0.04 and 0.52±0.09). The body weight (73.75±0.11 kg), height (1.72±0.1 m) and body mass index, BMI, (24.58±0.73 kg mG2) of the depot workers were higher (p>0.05) than that of the control. The Blood Pressure (BP) of the exposed group (120/90±1.38 mmHg) and the control (120/80±1.14 mmHg) differed only in the Diastolic Blood Pressure (DBP) by 10 mmHg and in the calculated systolic to diastolic blood pressure ratio (SBP:DBP) by 0.17. The study suggested cardiovascular risks and impaired lipid metabolism in the petroleum depot workers. The health implications of this study warrant a follow up perhaps, in a larger population and sample size. The study underscored the need for the petroleum depot workers to wear personal protective equipment and to assess their health status on a regular basis.","PeriodicalId":92133,"journal":{"name":"Research journal of chemical and environmental sciences","volume":"1 1","pages":"270-279"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87771803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Estimating Methane Gas Generation Rate from Sanandaj City Landfill Using LANDGEM Software 利用LANDGEM软件估算Sanandaj市垃圾填埋场甲烷气体产生率

Research journal of chemical and environmental sciences Pub Date : 2015-06-01 DOI: 10.3923/rjes.2015.280.288

S. Sadeghi, B. Shahmoradi, A. Maleki

{"title":"Estimating Methane Gas Generation Rate from Sanandaj City Landfill Using LANDGEM Software","authors":"S. Sadeghi, B. Shahmoradi, A. Maleki","doi":"10.3923/rjes.2015.280.288","DOIUrl":"https://doi.org/10.3923/rjes.2015.280.288","url":null,"abstract":"The main gas arising from landfills is methane. The greenhouse effect of methane is 21 times more serious than that of carbon dioxide. On the other hand, this gas has a significant potential for producing energy, so that in cases of application of a suitable technology, a considerable energy from this gas could be extracted and used. One of the mathematical models used for estimation of the amount of methane potential in landfills is LANDGEM software, which was applied in the present research study. This was a descriptive-cross sectional study in which first, the data related to the amount of waste generated, population and landfill characteristics were collected. Then, Sanandaj (study area) population was estimated for different years of the study period with respect to selective growth coefficient. In the last phase, constant value of methane emission and methane production potential in Sanandaj landfill were specified using LANDGEM software. As a result, potential capacity for producing methane in Sanandaj landfill was estimated as 170 m3 tG1 and the amount of output methane during 2018, 2023, 2028 and 2033 is supposed to be 205, 410, 549 and 671 m3 hG1, respectively. Indeed, production speed continues with a lower gradient from 2033 onward. Therefore, the results of current research can be used in designing and measuring the capacity of methane extraction systems from this landfill and in evaluation of Iran’s contribution in global emission of greenhouse gases.","PeriodicalId":92133,"journal":{"name":"Research journal of chemical and environmental sciences","volume":"40 1","pages":"280-288"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77477073","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

Monitoring of Groundwater Salinity for Water Resources Management in Irrigated Areas of Al-Jouf Region, Saudi Arabia 沙特阿拉伯Al-Jouf地区灌区水资源管理中地下水盐度监测

Research journal of chemical and environmental sciences Pub Date : 2015-06-01 DOI: 10.3923/RJES.2015.256.269

A. Al-Naeem

{"title":"Monitoring of Groundwater Salinity for Water Resources Management in Irrigated Areas of Al-Jouf Region, Saudi Arabia","authors":"A. Al-Naeem","doi":"10.3923/RJES.2015.256.269","DOIUrl":"https://doi.org/10.3923/RJES.2015.256.269","url":null,"abstract":"Groundwater salinity is an important limiting factor to sustainable irrigated agriculture in Saudi Arabia. The total groundwater salinity depends on the aquifer geology and its chemical characteristics. The main objective of this study was to monitor groundwater salinity for water resources management in irrigated areas of Al-Jouf Region of Saudi Arabia. A total of 117 water samples were collected from randomly selected small, medium and large agricultural farms from the whole region. The water samples were mainly analyzed for major cation and anions. The total groundwater salinity in less than 1000 mg LG1 in the whole region and falls in the category of medium to high salinity and medium to high sodicity water. Inter-ion relationship is very poor between major cations and anions. The EC and SAR relationship is very poor (R2 = 0.038). About 91% of groundwater is of sodium chloride type waters and the remaining 9% is that of sodium sulfate type water. The relationship between simple SAR and calculated SARs is very strong (R2 = 0.988 and 0.983). The results showed a replenishment of groundwater aquifer with the fresh water intrusion. In conclusion, to achieve higher water use efficiency, improvement water management practices such as application of leaching requirements, adoption of improved irrigation methods (drip and sub-surface irrigation) and proper crop selection need to be followed for increased agricultural production in the region.","PeriodicalId":92133,"journal":{"name":"Research journal of chemical and environmental sciences","volume":"8 1","pages":"256-269"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82216817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 10

Efficacy Evaluation of some Herbicides for Weed Management and Yield Attributes in Broad Bean (Vicia faba) 几种除草剂对蚕豆杂草治理效果及产量性状的评价

Research journal of chemical and environmental sciences Pub Date : 2015-06-01 DOI: 10.3923/RJES.2015.289.295

Zeinab Aboali, S. Saeedipour

{"title":"Efficacy Evaluation of some Herbicides for Weed Management and Yield Attributes in Broad Bean (Vicia faba)","authors":"Zeinab Aboali, S. Saeedipour","doi":"10.3923/RJES.2015.289.295","DOIUrl":"https://doi.org/10.3923/RJES.2015.289.295","url":null,"abstract":"Weeds have always been considered strong competitors of crop plants; and today, they form an inseparable part of agronomic systems and inflict losses on crop plants. A field study was undertaken at Agronomy Research Farm, Islamic Azad University during 2011-12 to appraise the efficacy of some post spectrum herbicides against weed growth and their influence on growth and yield of broad bean. Treatment consisted of (1) Basagran SL 48% 1.5 L haG1+Haloxyfop-R-methyl EC 10.8% 0.6 L haG1, (2) Bentazon SL 48% 1.5 L haG1+Sethoxydim OEC 12.5% 1.5 L haG1, (3) Bentazon SL 48% 1.5 L haG1+Fenoxaprop-p-ethyl EC 12% 0.7 L haG1, (4) Imazthapyr SL 10% 0.6 L haG1 and (5) Imazthapyr SL 10% 0.4 applied POST, with two control plots weed-free and weed-infested throughout the crop cycle, respectively. The experiment was replicated forth in a randomized complete block design. Compared with the weedy check, application of herbicides reduced weed biomass and increased broad bean biological and seed yield. Among herbicide treatments, imazthapyr with dose of 0.6 L haG1 reduced weed dry matter by 98.7% and the lowest weed dry matter was observed with this treatment. Maximum broad bean biological yield was obtained in weed free check that was significantly different from other treatments. In comparison, among herbicide, maximum seed yield obtained with application of imazthapyr with dose of 0.6 L haG1, however, there was no statistical difference in seed yield among herbicide treatments.","PeriodicalId":92133,"journal":{"name":"Research journal of chemical and environmental sciences","volume":"168 1","pages":"289-295"},"PeriodicalIF":0.0,"publicationDate":"2015-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75894609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8