首页 > 最新文献

International Journal of Scientific Research in Environmental Sciences最新文献

英文 中文
Characterization of Fruit and Vegetable Wastes for Biogas Production under Anaerobic Condition 厌氧条件下果蔬废弃物产气特性研究
Pub Date : 2017-02-01 DOI: 10.12983/IJSRES-2017-P0001-0009
M. M. Tarekegn, Massreshaw Assnakew Abebe
{"title":"Characterization of Fruit and Vegetable Wastes for Biogas Production under Anaerobic Condition","authors":"M. M. Tarekegn, Massreshaw Assnakew Abebe","doi":"10.12983/IJSRES-2017-P0001-0009","DOIUrl":"https://doi.org/10.12983/IJSRES-2017-P0001-0009","url":null,"abstract":"","PeriodicalId":14383,"journal":{"name":"International Journal of Scientific Research in Environmental Sciences","volume":"42 1","pages":"1-9"},"PeriodicalIF":0.0,"publicationDate":"2017-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85101532","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: 4
Malaria Parasitaemia amongst Military Personnel Households in a Military Formation in Port Harcourt, Nigeria 尼日利亚哈科特港军事编队中军事人员家庭中的疟疾寄生虫病
Pub Date : 2017-02-01 DOI: 10.12983/ijsres-2017-p0010-0016
S. Egbom, S. Nzeako
{"title":"Malaria Parasitaemia amongst Military Personnel Households in a Military Formation in Port Harcourt, Nigeria","authors":"S. Egbom, S. Nzeako","doi":"10.12983/ijsres-2017-p0010-0016","DOIUrl":"https://doi.org/10.12983/ijsres-2017-p0010-0016","url":null,"abstract":"","PeriodicalId":14383,"journal":{"name":"International Journal of Scientific Research in Environmental Sciences","volume":"61 1","pages":"10-16"},"PeriodicalIF":0.0,"publicationDate":"2017-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82193125","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: 2
Biocontrol Potentials of Individual Specie of Rhizobacteria and Their Consortium against Phytopathogenic Fusarium oxysporum And Rhizoctonia solani 根菌单种及其联合菌群对植物致病性尖孢镰刀菌和枯丝核菌的生物防治潜力
Pub Date : 2016-07-01 DOI: 10.12983/IJSRES-2016-P0219-0227
A. Akintokun, Michael Taiwo
Plant Growth Promoting Rhizobacteria (PGPR) are indigenous to soil and the plant rhizosphere and play a major role in the biocontrol of plant pathogens. This present study investigated the biocontrol abilities of individual species of bacteria and their consortium against phytopathogenic Fusarium oxysporum and Rhizoctonia solani. Results from the in-vitro bio-control assay (Hydrogen cyanide, catalase enzyme, lipase enzyme and indole acetic acid production) revealed that four isolates (SB2, PL3, MPT2 and SLD3) exhibited highest and consistent bio-control characteristics. The greenhouse evaluation of these isolates and their consortium (CST) in association with tomato (Beske variety) revealed that isolate SB2 (94.9%) highly reduced the disease caused by Rhizoctonia solani than CST (91.5%), PL3 (90.5%), MPT2 (74.9%), SLD3 (71.5%) and control (0.0%). However, isolate SB2 (100%) apparently reduced the disease caused by Fusarium oxysporum, while isolates PL3, CST, MPT2, SLD3 and control reduced the same disease by 95.7%, 93.0%, 79.0%, 65.2% respectively. Isolates SB2 identified as Bacillus subtilis was the most effective and could serve as biocontrol agents for controlling Fusarium oxysporum and Rhizoctonia solani in tomato cultivation.
促进植物生长的根瘤菌(PGPR)是土壤和植物根际的原生植物,在植物病原菌的生物防治中起着重要作用。本文研究了不同菌种及其组合对植物致病菌尖孢镰刀菌和枯丝核菌的生物防治能力。体外生物防治实验(氰化氢酶、过氧化氢酶、脂肪酶和吲哚乙酸产量)结果表明,4个分离株(SB2、PL3、MPT2和SLD3)具有最高的和一致的生物防治特性。对这些分离物及其联系物(CST)与番茄(贝斯克品种)的温室效应评价表明,分离物SB2(94.9%)对茄枯丝核菌的防治效果明显优于CST(91.5%)、PL3(90.5%)、MPT2(74.9%)、SLD3(71.5%)和对照(0.0%)。而分离物SB2(100%)对尖孢镰刀菌致病率明显降低,而分离物PL3、CST、MPT2、SLD3和对照对尖孢镰刀菌致病率分别为95.7%、93.0%、79.0%、65.2%。分离菌株SB2为枯草芽孢杆菌,可作为防治番茄尖孢镰刀菌和枯丝核菌的生物防治剂。
{"title":"Biocontrol Potentials of Individual Specie of Rhizobacteria and Their Consortium against Phytopathogenic Fusarium oxysporum And Rhizoctonia solani","authors":"A. Akintokun, Michael Taiwo","doi":"10.12983/IJSRES-2016-P0219-0227","DOIUrl":"https://doi.org/10.12983/IJSRES-2016-P0219-0227","url":null,"abstract":"Plant Growth Promoting Rhizobacteria (PGPR) are indigenous to soil and the plant rhizosphere and play a major role in the biocontrol of plant pathogens. This present study investigated the biocontrol abilities of individual species of bacteria and their consortium against phytopathogenic Fusarium oxysporum and Rhizoctonia solani. Results from the in-vitro bio-control assay (Hydrogen cyanide, catalase enzyme, lipase enzyme and indole acetic acid production) revealed that four isolates (SB2, PL3, MPT2 and SLD3) exhibited highest and consistent bio-control characteristics. The greenhouse evaluation of these isolates and their consortium (CST) in association with tomato (Beske variety) revealed that isolate SB2 (94.9%) highly reduced the disease caused by Rhizoctonia solani than CST (91.5%), PL3 (90.5%), MPT2 (74.9%), SLD3 (71.5%) and control (0.0%). However, isolate SB2 (100%) apparently reduced the disease caused by Fusarium oxysporum, while isolates PL3, CST, MPT2, SLD3 and control reduced the same disease by 95.7%, 93.0%, 79.0%, 65.2% respectively. Isolates SB2 identified as Bacillus subtilis was the most effective and could serve as biocontrol agents for controlling Fusarium oxysporum and Rhizoctonia solani in tomato cultivation.","PeriodicalId":14383,"journal":{"name":"International Journal of Scientific Research in Environmental Sciences","volume":"17 1","pages":"219-227"},"PeriodicalIF":0.0,"publicationDate":"2016-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85047482","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
Vesicular-Arbuscular Mycorrhizal Fungi and Seaweed Extract for The Control of Fusarium Wilt (Fusarium Oxysporum F. Sp. Cubense Tr4) of Potted ‘Cavendish’ Banana Under Nursery Condition 试管-丛枝菌根真菌和海藻提取物防治盆栽“卡文迪什”香蕉枯萎病的研究
Pub Date : 2016-07-01 DOI: 10.12983/IJSRES-2016-P0208-0218
L. Ubaub, Liza Belle C. Poblacion
{"title":"Vesicular-Arbuscular Mycorrhizal Fungi and Seaweed Extract for The Control of Fusarium Wilt (Fusarium Oxysporum F. Sp. Cubense Tr4) of Potted ‘Cavendish’ Banana Under Nursery Condition","authors":"L. Ubaub, Liza Belle C. Poblacion","doi":"10.12983/IJSRES-2016-P0208-0218","DOIUrl":"https://doi.org/10.12983/IJSRES-2016-P0208-0218","url":null,"abstract":"","PeriodicalId":14383,"journal":{"name":"International Journal of Scientific Research in Environmental Sciences","volume":"13 1","pages":"208-218"},"PeriodicalIF":0.0,"publicationDate":"2016-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81544796","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: 0
Predicting Mobility of Cadmium (Cd) and Lead (Pb) in Contaminated Soil through a Mathematical Model 用数学模型预测污染土壤中镉和铅的迁移率
Pub Date : 2016-07-01 DOI: 10.12983/ijsres-2016-p0240-0246
I. M. Animashaun, S. Olorunsogo, M. Y. Otache, I. Kuti, A. M. Bello, Joseph Ibrahim
Indiscriminate discharge of industrial effluent particularly pharmaceutical effluent on agricultural soils poses serious health risk to plants, animals and ultimately humans. This study was carried out to predict the mobility of two of the most lethal soil pollutants (Cadmium and Lead). As such, the concentrations of Cadmium and Lead in soil at the initial point of effluent disposal and at subsequent points 4m, 8m, 12m, 16m and 20m away from the point source were determined. A simplified version of transport equation was used to simulate the mobility of Cadmium and Lead in the soil using polymath professional version 6.1. The simulated result showed a good level of agreement with the experimental data with correlation coefficients of 0.92 and 0.96 for Pb and 0.89 and 0.97 for Cd mobility respectively. Thus the model can be considered as a good representation of the phenomenon of mobility of heavy metals in the soil.
工业废水,特别是制药废水不加区分地排放到农业土壤中,对植物、动物,最终对人类构成严重的健康风险。这项研究是为了预测两种最致命的土壤污染物(镉和铅)的流动性。因此,测定了废水处理起始点和其后距离点源4m、8m、12m、16m和20m处土壤中镉和铅的浓度。采用简化后的输运方程,利用polymath professional version 6.1模拟了镉和铅在土壤中的迁移。模拟结果与实验数据吻合较好,Pb迁移率的相关系数分别为0.92和0.96,Cd迁移率的相关系数分别为0.89和0.97。因此,该模型可以很好地反映重金属在土壤中的迁移现象。
{"title":"Predicting Mobility of Cadmium (Cd) and Lead (Pb) in Contaminated Soil through a Mathematical Model","authors":"I. M. Animashaun, S. Olorunsogo, M. Y. Otache, I. Kuti, A. M. Bello, Joseph Ibrahim","doi":"10.12983/ijsres-2016-p0240-0246","DOIUrl":"https://doi.org/10.12983/ijsres-2016-p0240-0246","url":null,"abstract":"Indiscriminate discharge of industrial effluent particularly pharmaceutical effluent on agricultural soils poses serious health risk to plants, animals and ultimately humans. This study was carried out to predict the mobility of two of the most lethal soil pollutants (Cadmium and Lead). As such, the concentrations of Cadmium and Lead in soil at the initial point of effluent disposal and at subsequent points 4m, 8m, 12m, 16m and 20m away from the point source were determined. A simplified version of transport equation was used to simulate the mobility of Cadmium and Lead in the soil using polymath professional version 6.1. The simulated result showed a good level of agreement with the experimental data with correlation coefficients of 0.92 and 0.96 for Pb and 0.89 and 0.97 for Cd mobility respectively. Thus the model can be considered as a good representation of the phenomenon of mobility of heavy metals in the soil.","PeriodicalId":14383,"journal":{"name":"International Journal of Scientific Research in Environmental Sciences","volume":"95 1","pages":"240-246"},"PeriodicalIF":0.0,"publicationDate":"2016-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79651791","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: 0
Salmonella-Bacteraemia and Diversity of Bacterial Uropathogens in Concomitant Urinary Schistosomiasis among Children in Jaba, Kaduna State, Nigeria 尼日利亚卡杜纳州贾巴儿童尿路血吸虫病伴发性尿路血吸虫病中沙门氏菌-菌血症和细菌尿路病原体多样性
Pub Date : 2016-07-01 DOI: 10.12983/IJSRES-2016-P0228-0239
H. Bishop, H. Inabo, Elijah Ekah Ella
Salmonella-bacteraemia and urinary schistosomiasis affect health and development of Nigerian children. This study was aimed at determining the prevalence of Salmonella-bacteraemia and diversity of bacterial uropathogens in concomitant urinary schistosomiasis in Jaba LGA, Kaduna State, Nigeria. Awareness on the diseases was created in pre-selected primary schools from 10 villages in Jaba. 505 pupils participated; 10ml urine and 2ml blood samples were collected from each pupil. Blood samples were pre-enriched in Selenite-F broth and Brilliant-Green-Bile broth. Urine sediments and pre-enriched blood were cultured on SSA and XLD agar. Bacterial isolates were biochemically characterised. Centrifuged urine sediments were microscopically examined for Schistosoma haematobium egg(s) and count/10ml urine was recorded. Results/data obtained were statistically analysed at P=0.05. No Salmonella species was found in all examined samples, hence a prevalence of 0.0%. Equally, no bacterial growth was seen on blood cultures. Seven diverse Gram-negative bacteria were isolated from the urine samples. Citrobacter spp (6.7%) and Klebsiella spp (3.4%) were most prevalent bacteria; others were Acinetobacter spp (2.0%) and E. coli (1.6%). The least occurring were Pseudomonas aeruginosa (0.4%), Providencia spp (0.2%) and Serratia marcescens (0.2%). Citrobacter spp (8.1%), E. coli (1.6%) and Klebsiella spp (1.6%) were found in co-infection with Schistosoma haematobium. Overall concomitant urinary schistosomiasis was 12.3%. Citrobacter spp, E. coli and Klebsiella spp were more prevalent in females. Acinetobacter spp was prevalent in males. Drinking water sources were statistically associated with bacterial uropathogens. Concerted efforts are required to eradicate schistosomiasis in Nigeria through snails/cercariae control, awareness and potable water supply.
沙门氏菌-菌血症和尿路血吸虫病影响尼日利亚儿童的健康和发育。本研究旨在确定尼日利亚卡杜纳州贾巴州(Jaba LGA)伴尿血吸虫病中沙门氏菌-菌血症的患病率和细菌性尿路病原体的多样性。在贾巴10个村庄的预选小学提高了对疾病的认识,505名学生参加了活动;每个瞳孔采集尿液10ml,血样2ml。血液样本在亚硒酸盐- f肉汤和亮绿胆肉汤中预先富集。尿液沉积物和预富集血分别在SSA和XLD琼脂上培养。分离的细菌进行了生物化学表征。用显微镜检查离心后的尿液沉积物中是否有血血吸虫卵,并记录每10ml尿液中血吸虫卵的计数。对所得结果/资料进行统计学分析,P=0.05。在所有检查样本中均未发现沙门氏菌,因此患病率为0.0%。同样,在血液培养中也没有发现细菌生长。从尿样中分离出七种不同的革兰氏阴性菌。柠檬酸杆菌(6.7%)和克雷伯氏菌(3.4%)是最常见的细菌;其余为不动杆菌(2.0%)和大肠杆菌(1.6%)。发生最少的是铜绿假单胞菌(0.4%)、普罗维登氏菌(0.2%)和粘质沙雷氏菌(0.2%)。血血吸虫共感染以柠檬酸杆菌(8.1%)、大肠杆菌(1.6%)和克雷伯氏菌(1.6%)为主。尿路血吸虫病总发生率为12.3%。柠檬酸杆菌、大肠杆菌和克雷伯氏杆菌在女性中较常见。不动杆菌在男性中普遍存在。饮用水源与细菌性尿路病原体有统计学关联。需要齐心协力,通过控制蜗牛/尾蚴、提高认识和提供饮用水,在尼日利亚根除血吸虫病。
{"title":"Salmonella-Bacteraemia and Diversity of Bacterial Uropathogens in Concomitant Urinary Schistosomiasis among Children in Jaba, Kaduna State, Nigeria","authors":"H. Bishop, H. Inabo, Elijah Ekah Ella","doi":"10.12983/IJSRES-2016-P0228-0239","DOIUrl":"https://doi.org/10.12983/IJSRES-2016-P0228-0239","url":null,"abstract":"Salmonella-bacteraemia and urinary schistosomiasis affect health and development of Nigerian children. This study was aimed at determining the prevalence of Salmonella-bacteraemia and diversity of bacterial uropathogens in concomitant urinary schistosomiasis in Jaba LGA, Kaduna State, Nigeria. Awareness on the diseases was created in pre-selected primary schools from 10 villages in Jaba. 505 pupils participated; 10ml urine and 2ml blood samples were collected from each pupil. Blood samples were pre-enriched in Selenite-F broth and Brilliant-Green-Bile broth. Urine sediments and pre-enriched blood were cultured on SSA and XLD agar. Bacterial isolates were biochemically characterised. Centrifuged urine sediments were microscopically examined for Schistosoma haematobium egg(s) and count/10ml urine was recorded. Results/data obtained were statistically analysed at P=0.05. No Salmonella species was found in all examined samples, hence a prevalence of 0.0%. Equally, no bacterial growth was seen on blood cultures. Seven diverse Gram-negative bacteria were isolated from the urine samples. Citrobacter spp (6.7%) and Klebsiella spp (3.4%) were most prevalent bacteria; others were Acinetobacter spp (2.0%) and E. coli (1.6%). The least occurring were Pseudomonas aeruginosa (0.4%), Providencia spp (0.2%) and Serratia marcescens (0.2%). Citrobacter spp (8.1%), E. coli (1.6%) and Klebsiella spp (1.6%) were found in co-infection with Schistosoma haematobium. Overall concomitant urinary schistosomiasis was 12.3%. Citrobacter spp, E. coli and Klebsiella spp were more prevalent in females. Acinetobacter spp was prevalent in males. Drinking water sources were statistically associated with bacterial uropathogens. Concerted efforts are required to eradicate schistosomiasis in Nigeria through snails/cercariae control, awareness and potable water supply.","PeriodicalId":14383,"journal":{"name":"International Journal of Scientific Research in Environmental Sciences","volume":"1 1","pages":"228-239"},"PeriodicalIF":0.0,"publicationDate":"2016-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89349784","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: 0
Effect of Nutrient and Light Intensity on Nutrient Uptakes of Gracilaria manilaensis 养分和光照强度对江蓠养分吸收的影响
Pub Date : 2016-06-01 DOI: 10.12983/IJSRES-2016-P0173-0185
Alireza Joniyas, Misni B. Surif, Raheleh Dehgahi
Nutrient and light are two important environmental factors in seaweed growth. Gracilaria has high potential for uptake of nutrient in sea water. Ammonium (NH4 -N) and nitrate (NO3 −N) uptake rates under different concentrations of nitrogen (N) level separately for ammonium and nitrate with incubated phosphate 10:1, (20/2, 50/5, 120/12, 200/20, 300/30 and 500/50 μM), during 24 hour. Second part of experiment was done under different light intensities (30, 50, 100 and 150 μmol photons m s) counting single (50 μM of NH4 -N or NO3 −N) and phosphorus 5 μM) during 24 hour. Results showed that the most elevated nitrate uptake was assessed after 1h (9.029 μmol gFW h) under 300 μM concentration and phosphorus uptake rate demonstrated the most outstanding uptake rate in same time under 50 μM phosphorus (3.89 μM gFW 1 h). The highest uptake rate of ammonium was evaluated after 1h as (17.01 μM gFW h) under 500 μM concentration. While, phosphorus results showed highest uptake rate under 50 μM (5.80 μmol gFW h). Furthermore, in second part nutrient uptake rates revealed increasing trend with increasing light intensity. The maximum uptake of ammonium, nitrate and phosphate is 3.06, 1.97 and 0.39 μMl gFW h respectively under 150μmol photons m s in the first hour of experiment. Nitrate and phosphate absorption capacity highly correlated to light intensity conditions meanwhile, no significant effect on ammonium uptake rate collected. Nitrogen removal under different concentrations of nitrate and ammonium were strongly dependent on the concentrations of inorganic concentration N and P.
营养和光是海藻生长的两个重要环境因子。江蓠在海水中具有较高的养分吸收潜力。在不同氮浓度(N)水平下,以10∶1、(20/2、50/5、120/12、200/20、300/30和500/50 μM培养磷酸盐,分别测定24 h内铵和硝态氮(NO3 -N)和铵的吸收率。第二部分实验在不同光强(30、50、100和150 μmol光子m s)下进行24小时,计数单(50 μM的NH4 -N或NO3 -N)和5 μM的磷)。结果表明,在300 μM浓度下,1h硝态氮吸收率最高(9.029 μmol gFW h),在50 μM浓度下,1h磷吸收率最高(3.89 μM gFW 1h),在500 μM浓度下,1h铵吸收率最高(17.01 μM gFW h)。磷在50 μM (5.80 μmol gFW h)下吸收速率最高,第二部分养分吸收速率随光照强度的增加呈增加趋势。在150μmol光子m s下,试验第1小时铵、硝、磷酸盐的最大吸收量分别为3.06、1.97和0.39 μMl gFW h。硝态氮和磷酸盐的吸收能力与光照条件高度相关,对铵态氮的吸收速率无显著影响。不同硝铵浓度下的脱氮与无机浓度N、P的浓度密切相关。
{"title":"Effect of Nutrient and Light Intensity on Nutrient Uptakes of Gracilaria manilaensis","authors":"Alireza Joniyas, Misni B. Surif, Raheleh Dehgahi","doi":"10.12983/IJSRES-2016-P0173-0185","DOIUrl":"https://doi.org/10.12983/IJSRES-2016-P0173-0185","url":null,"abstract":"Nutrient and light are two important environmental factors in seaweed growth. Gracilaria has high potential for uptake of nutrient in sea water. Ammonium (NH4 -N) and nitrate (NO3 −N) uptake rates under different concentrations of nitrogen (N) level separately for ammonium and nitrate with incubated phosphate 10:1, (20/2, 50/5, 120/12, 200/20, 300/30 and 500/50 μM), during 24 hour. Second part of experiment was done under different light intensities (30, 50, 100 and 150 μmol photons m s) counting single (50 μM of NH4 -N or NO3 −N) and phosphorus 5 μM) during 24 hour. Results showed that the most elevated nitrate uptake was assessed after 1h (9.029 μmol gFW h) under 300 μM concentration and phosphorus uptake rate demonstrated the most outstanding uptake rate in same time under 50 μM phosphorus (3.89 μM gFW 1 h). The highest uptake rate of ammonium was evaluated after 1h as (17.01 μM gFW h) under 500 μM concentration. While, phosphorus results showed highest uptake rate under 50 μM (5.80 μmol gFW h). Furthermore, in second part nutrient uptake rates revealed increasing trend with increasing light intensity. The maximum uptake of ammonium, nitrate and phosphate is 3.06, 1.97 and 0.39 μMl gFW h respectively under 150μmol photons m s in the first hour of experiment. Nitrate and phosphate absorption capacity highly correlated to light intensity conditions meanwhile, no significant effect on ammonium uptake rate collected. Nitrogen removal under different concentrations of nitrate and ammonium were strongly dependent on the concentrations of inorganic concentration N and P.","PeriodicalId":14383,"journal":{"name":"International Journal of Scientific Research in Environmental Sciences","volume":"174 1","pages":"173-185"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76930444","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: 2
Remediation of Chlorpyrifos in Artificially Spiked Soil by Defined Microbial Consortium 微生物群落对毒死蜱在人工添加土壤中的修复作用
Pub Date : 2016-06-01 DOI: 10.12983/IJSRES-2016-P0164-0172
R. Srinivas, A. G. D. Prasad, M. Krishnan
Excessive use of pesticides as plant protectants has led to the contamination of ecosystem in all parts of the world. This widespread use of pesticides for agricultural purposes has resulted in the persistence of their residues in various environmental matrices, such as soil, water and air. To remove these residues from the environment bioremediation has been proven a suitable technique for reducing pesticide contamination as microorganisms are capable of mineralizing them completely. Chlorpyrifos is a broad spectrum moderately toxic organophosphorous insecticide. It is widely used in agriculture for pest control and in households as a termicide. Long term exposure to chlorpyrifos residues and its metabolites can affect the human health. A microbial consortium that can utilize Chlorpyrifos as a sole source of carbon and energy was isolated from soil through a novel technique involving an initial enrichment in a column reactor followed by enrichment in a shake flask. A diverse range of microorganisms responsible for Chlorpyrifos degradation has been developed. In the present investigation, a new microbial consortium degrading Quinolphos has been developed. Factors such induction, inoculum level, concentration of the substrate, soil pH, soil moisture etc affecting degradation were also studied. Inoculum level of 500µg protein/mL, and a pH 7.5 at ambient temperature (26–28 ?C) resulted in degradation of Chlorpyrifos upto 50ppm.
农药作为植物保护剂的过度使用导致了世界各地生态系统的污染。农药在农业上的广泛使用导致其残留物在土壤、水和空气等各种环境基质中持续存在。为了从环境中去除这些残留物,生物修复已被证明是一种减少农药污染的合适技术,因为微生物能够完全矿化它们。毒死蜱是一种广谱中毒性有机磷杀虫剂。它广泛用于农业害虫防治和家庭杀菌剂。长期接触毒死蜱残留物及其代谢物会影响人体健康。通过一种新的技术,从土壤中分离出一种可以利用毒死蜱作为碳和能量的唯一来源的微生物联合体,该技术包括在柱式反应器中初始富集,然后在摇瓶中富集。已开发出多种负责毒死蜱降解的微生物。在本研究中,开发了一个新的降解喹诺酚的微生物联合体。并对诱导、接种量、基质浓度、土壤pH、土壤水分等影响降解的因素进行了研究。接种量为500µg蛋白/mL,环境温度(26-28℃)pH为7.5时,毒死蜱的降解率可达50ppm。
{"title":"Remediation of Chlorpyrifos in Artificially Spiked Soil by Defined Microbial Consortium","authors":"R. Srinivas, A. G. D. Prasad, M. Krishnan","doi":"10.12983/IJSRES-2016-P0164-0172","DOIUrl":"https://doi.org/10.12983/IJSRES-2016-P0164-0172","url":null,"abstract":"Excessive use of pesticides as plant protectants has led to the contamination of ecosystem in all parts of the world. This widespread use of pesticides for agricultural purposes has resulted in the persistence of their residues in various environmental matrices, such as soil, water and air. To remove these residues from the environment bioremediation has been proven a suitable technique for reducing pesticide contamination as microorganisms are capable of mineralizing them completely. Chlorpyrifos is a broad spectrum moderately toxic organophosphorous insecticide. It is widely used in agriculture for pest control and in households as a termicide. Long term exposure to chlorpyrifos residues and its metabolites can affect the human health. A microbial consortium that can utilize Chlorpyrifos as a sole source of carbon and energy was isolated from soil through a novel technique involving an initial enrichment in a column reactor followed by enrichment in a shake flask. A diverse range of microorganisms responsible for Chlorpyrifos degradation has been developed. In the present investigation, a new microbial consortium degrading Quinolphos has been developed. Factors such induction, inoculum level, concentration of the substrate, soil pH, soil moisture etc affecting degradation were also studied. Inoculum level of 500µg protein/mL, and a pH 7.5 at ambient temperature (26–28 ?C) resulted in degradation of Chlorpyrifos upto 50ppm.","PeriodicalId":14383,"journal":{"name":"International Journal of Scientific Research in Environmental Sciences","volume":"8 1","pages":"164-172"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76326752","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: 0
Seasonal Variation of Heavy Metals Pollution in Soil and Date Palm Phoenix dactylifera L. Leaves at Basra Governorate /Iraq Written by Kearallah M.A. Al-Jabary, Jabbar D. Neama, Mohammed H. 伊拉克巴士拉省土壤和枣椰树叶片重金属污染的季节变化
Pub Date : 2016-06-01 DOI: 10.12983/IJSRES-2016-P0186-0195
Kearallah M.A. Al-Jabary, J. D. Neama, M. Abass
{"title":"Seasonal Variation of Heavy Metals Pollution in Soil and Date Palm Phoenix dactylifera L. Leaves at Basra Governorate /Iraq Written by Kearallah M.A. Al-Jabary, Jabbar D. Neama, Mohammed H.","authors":"Kearallah M.A. Al-Jabary, J. D. Neama, M. Abass","doi":"10.12983/IJSRES-2016-P0186-0195","DOIUrl":"https://doi.org/10.12983/IJSRES-2016-P0186-0195","url":null,"abstract":"","PeriodicalId":14383,"journal":{"name":"International Journal of Scientific Research in Environmental Sciences","volume":"22 1","pages":"186-195"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74889122","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
Water Quality Assessment of Lake Manzala, Egypt: A Comparative Study 埃及曼萨拉湖水质评价的比较研究
Pub Date : 2016-06-01 DOI: 10.12983/IJSRES-2016-P0196-0207
M. Elshemy
Lake Manzala is the largest Egyptian lagoon which is considered as one of the most important fishing sources in Egypt. The lake faces a lot of environmental challenges which affect its water quality status. The main objective of this study is assessing the water quality status of the lake using an appropriate Water Quality Index (WQI). Records for twelve water quality parameters during the period from August 2010 to August 2012 were collected from 11 stations in the lake and from 4 stations at the drains outlets. Two Water Quality Indices (National Sanitation Foundation WQI and Lagoon WQI) and a GIS tool were used to assess and spatially assign the water quality conditions of the lake. The results reveal critical water quality conditions for the lake. The eastern and southern zones of the lake have the worst water quality conditions, ranking as a "Very Bad" water quality status, according to L-WQI. While the western zone of the lake has the best water quality condition, which is "Good", according to L-WQI. Bahr Elbaqar drain has the worst water quality status "Very Bad", among the studied drains, which affect the water quality conditions of the lake, in particular the eastern zone of the lake. The worst water quality status of the lake was recorded in August 2011, according to both used indices. The spatial assigning of the lake water quality conditions ensures that the lake should be divided into different zones for fishing and other objectives. An urgent water quality management strategy should be implemented for the lake.
曼萨拉湖是埃及最大的泻湖,被认为是埃及最重要的渔业资源之一。该湖泊面临着诸多环境挑战,影响着其水质状况。本研究的主要目的是利用适当的水质指数(WQI)来评估湖泊的水质状况。2010年8月至2012年8月,采集了湖内11个站点和排水口4个站点的12个水质参数记录。采用两个水质指标(国家卫生基金会WQI和泻湖WQI)和GIS工具对湖泊水质状况进行了评价和空间分配。结果揭示了该湖的临界水质条件。据L-WQI称,湖泊的东部和南部地区水质状况最差,水质状况为“非常差”。而西湖西部水质状况最好,为“良好”。在研究的水渠中,巴哈尔巴哈尔水渠的水质状况最差,为“极差”,影响了湖泊的水质状况,特别是湖的东部地区。根据两个使用的指数,该湖的最差水质状况是在2011年8月。湖泊水质条件的空间分配保证了湖泊应被划分为不同的捕鱼区和其他目的区。应对该湖实施紧急的水质管理策略。
{"title":"Water Quality Assessment of Lake Manzala, Egypt: A Comparative Study","authors":"M. Elshemy","doi":"10.12983/IJSRES-2016-P0196-0207","DOIUrl":"https://doi.org/10.12983/IJSRES-2016-P0196-0207","url":null,"abstract":"Lake Manzala is the largest Egyptian lagoon which is considered as one of the most important fishing sources in Egypt. The lake faces a lot of environmental challenges which affect its water quality status. The main objective of this study is assessing the water quality status of the lake using an appropriate Water Quality Index (WQI). Records for twelve water quality parameters during the period from August 2010 to August 2012 were collected from 11 stations in the lake and from 4 stations at the drains outlets. Two Water Quality Indices (National Sanitation Foundation WQI and Lagoon WQI) and a GIS tool were used to assess and spatially assign the water quality conditions of the lake. The results reveal critical water quality conditions for the lake. The eastern and southern zones of the lake have the worst water quality conditions, ranking as a \"Very Bad\" water quality status, according to L-WQI. While the western zone of the lake has the best water quality condition, which is \"Good\", according to L-WQI. Bahr Elbaqar drain has the worst water quality status \"Very Bad\", among the studied drains, which affect the water quality conditions of the lake, in particular the eastern zone of the lake. The worst water quality status of the lake was recorded in August 2011, according to both used indices. The spatial assigning of the lake water quality conditions ensures that the lake should be divided into different zones for fishing and other objectives. An urgent water quality management strategy should be implemented for the lake.","PeriodicalId":14383,"journal":{"name":"International Journal of Scientific Research in Environmental Sciences","volume":"20 1","pages":"196-207"},"PeriodicalIF":0.0,"publicationDate":"2016-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81945431","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
期刊
International Journal of Scientific Research in Environmental Sciences
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1