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801.
The consumption of contaminated food crops, meat and milk has significantly increased the concentrations of trace metals in human blood as compared to the control area. 相似文献
802.
Bacterial strain RV9 recovered from greengram nodules tolerated 2400 μg/mL of hexaconazole and was identified by 16 S rDNA sequence analysis as Bradyrhizobium japonicum(KY940048). Strain RV9 produced IAA(61.6 μg/mL), ACC deaminase(51.7 mg/(protein·hr)), solubilized TCP(105 μg/mL), secreted 337.6 μg/mL EPS, and produced SA(52.2 μg/mL) and 2,3-DHBA(28.3 μg/mL). Exopolysaccharides produced by strain RV9 was quantified and characterized by SEM, AFM, EDX and FTIR. Beyond tolerance limit,hexaconazole caused cellular impairment and reduced the viability of strain RV9 revealed by SEM and CLSM. Hexaconazole distorted the root tips and altered nodule structure leading thereby to reduction in the performance of greengram. Also, the level of antioxidant enzymes, proline, TBARS, ROS and cell death was increased in hexaconazole treated plants.CLSM images revealed a concentration dependent increase in the characteristic green and blue fluorescence of hexaconazole treated roots. The application of B. japonicum strain RV9 alleviated the fungicide toxicity and improved the measured plant characteristics. Also,rhizobial cells were localized inside tissues as revealed by CLSM. Colonization of B.japonicum strain RV9 decreased the levels of CAT, POD, APX, GPX and TBARS by 80%, 5%,13%, 13% and 19%, respectively over plants grown at 80 μg/(hexaconazole·kg) soil. The ability to detoxify hexaconazole, colonize plant tissues, secrete PGP bioactive molecules even under fungicide pressure and its unique ability to diminish oxidative stress make B.japonicum an attractive choice for remediation of fungicide polluted soils and to concurrently enhance greengram production under stressed environment. 相似文献
803.
Xiaotian Lu Yonglong Lu Deliang Chen Chao Su Shuai Song Tieyu Wang Hanqin Tian Ruoyu Liang Meng Zhang Kifayatullah Khan 《环境科学学报(英文版)》2019,31(1):359-369
Aquatic ecosystem sustainability around the globe is facing crucial challenges because of increasing anthropogenic and natural disturbances. In this study, the Tianchi Lake, a typical cold-water lake and a UNESCO/MAB(Man and Biosphere) nature reserve located in high latitude and elevation with the relatively low intensity of human activity was chosen as a system to examine the linkages between climate change and eutrophication. As a part of the UNESCO Bogda Man and Biosphere Reserve, Tianchi Lake has been well preserved for prevention from human intervention, but why has it been infected with eutrophication recent years? Our results show that climate change played a significant role in the eutrophication in the Tianchi Lake. Increased temperature, changed precipitation pattern and wind-induced hydrodynamic fluctuations in the summer season were suggested to make a major contribution to the accelerated eutrophication. The results also showed that the local temperature and precipitation changes were closely linked to the large-scale atmospheric circulation, which opens the door for the method to be applied in other regions without local climatic information. This study suggests that there is an urgent need to take into consideration of climate change adaptation into the conservation and management of cold-water lakes globally. 相似文献
804.
利用三维激发发射矩阵光谱(3-D EEM)和平行因子分析,研究了三岔河流域平寨水库溶解有机质的来源、组成和转化情况。在平寨水库的入库水、表层水(0~5 m)、深层水(10~60 m)和出库水中,检测到了几种荧光溶解有机质组分,分别为陆源类腐殖质、自源类腐殖质和浮游植物源的类蛋白质(或类色氨酸或类酪氨酸)。陆源类腐殖质的荧光强度在入库水中略高于出库水,表明陆源类腐殖质在水库系统中相对稳定,大坝截流对其影响不大。自源类腐殖质的荧光强度在库区明显高于入库水和出库水,表明自源类腐殖质既由自源有机物分解产生,又在光化学、微生物和大坝物理拦截过程的影响下发生分解;其他荧光组分中也检测到相似的结果。水温、pH、溶解氧和有色溶解有机质表现出相似的季节变化,光化学和微生物以及大坝拦截是引起水库入库水、库区表层水、库区深层水和出库水中荧光溶解有机质时空动态变化的主要原因。 相似文献
805.
The October 2005 earthquake in northern Pakistan severely affected the livelihoods of 1.5 million people. With the destruction of material assets and communications infrastructure, the quake had a devastating impact on people's way of life in this remote mountainous region. This paper explores livelihood revival interventions undertaken during the earthquake response, and considers how differentiated livelihood outcomes were achieved. In addressing this objective the paper examines livelihood rehabilitation schemes in terms of structural aspects, working strategies, key factors, strengths of interventions and the role of human agency in influencing livelihood trajectories of quake‐affected communities. Primary data for this study was gathered in northern Pakistan between October 2008 and January 2009. The study identifies structural shortcomings and strengths of the programmes attempting to revive the livelihoods of poor and vulnerable households. It identifies how households in two villages made the most of opportunities to improve their lives and move towards favourable outcomes. 相似文献
806.
Dahari Nadhira Muda Khalida Latif Mohd Talib Dominick Doreena Hussein Norelyza Khan Md Firoz 《Environmental geochemistry and health》2022,44(10):3377-3393
Environmental Geochemistry and Health - The smaller particles that dominate the particle number concentration (PNC) in the ambient air only contribute to a small percentage of particulate matter... 相似文献
807.
Ejaz Abid Ahmad Kafeel Khan Zafar Iqbal Akhtar Shahzad Sultana Razia Nadeem Muhammad Hussain Muhammad Iftikhar Elshikh Mohamed S. 《Environmental science and pollution research international》2022,29(23):34558-34574
Environmental Science and Pollution Research - Present study was conducted to check the heavy metal content in wheat treated with municipal solid waste, Although municipal solid waste was enriched... 相似文献
808.
Khan Muhammad Idrees Bouyahya Abdelhakim Hachlafi Naoufal E. L. Menyiy Naoual El Akram Muhammad Sultana Sabira Zengin Gokhan Ponomareva Lilya Shariati Mohammad Ali Ojo Oluwafemi Adeleke Dall’Acqua Stefano Elebiyo Tobiloba Christiana 《Environmental science and pollution research international》2022,29(17):24411-24444
Environmental Science and Pollution Research - Breast cancer (BC) is one of the most common and recurring diseases and the second leading cause of death in women. Despite prevention, diagnostics,... 相似文献
809.
Lyu Lu Khan Irfan Zakari Abdulrasheed Bilal 《Environmental science and pollution research international》2022,29(6):8464-8472
Environmental Science and Pollution Research - Environmental sustainability is increasing emphasis on global environmental concerns at the forefront of public policy debate. This paper investigates... 相似文献
810.
Faisal M. Rashed Md Abu Ahmed Jahir Alsaiari Mabkhoot Jalalah Mohammed Alsareii Saeed A. Harraz Farid A. 《Environmental science and pollution research international》2022,29(35):52900-52914
Environmental Science and Pollution Research - Effective design of ultrafast new-generation photocatalysts is a challenging task that requires highly dedicated efforts. This research focused on the... 相似文献