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321.
Sharma Ruchika Patil Chandragouda Majeed Jaseela Kumar Subodh Aggarwal Geeta 《Environmental science and pollution research international》2022,29(49):73795-73808
Environmental Science and Pollution Research - Medicinal plants have been used as traditional herbal medicines in the treatment of various types of diseases. However, the increased demand for these... 相似文献
322.
Singh Sukhbir Hema Sharma Neelam Sachdeva Monika Behl Tapan Zahoor Ishrat Fuloria Neeraj Kumar Sekar Mahendran Fuloria Shivkanya Subramaniyan Vetriselvan Alsubayiel Amal M Dailah Hamed Ghaleb Naved Tanveer Bhatia Saurabh Al-Harrasi Ahmed Aleya Lotfi 《Environmental science and pollution research international》2022,29(49):73809-73827
Environmental Science and Pollution Research - Neurodegeneration is the loss of neuronal capacity and structure over time which causes neurodegenerative disorders like Alzheimer, amyotrophic... 相似文献
323.
The removal of solubilized vat dye effluent using photo detoxification method was studied at various pH ranges. Experiments
were carried out with synthetic effluent using total dye concentrations of 50, 100, 200, 300, and 350 mg/L. In sunlight photo
oxidation, the original soluble vat dye is precipitated and can be filtered and reused by the textile industries. The effect
of the different concentrations (1,000, 2,000, 3,000 mg/L) of total dissolved solids on the removal of vat dye was also carried
out in the photo detoxification process. The efficiency of the dye removal was found to be 99 %. 相似文献
324.
Fluoride concentration of groundwater reserves occurs in many places in the world. A critical area for such contamination
in India is alluvial soil of the plain region, consisting of five blocks (Jhajjar, Bahadurgarh, Beri, Matanhail, and Sahalawas)
of the Jhajjar District adjacent to the National Capital Territory of India, New Delhi. The purpose of this study was to assess
the association between water fluoride levels and prevalence of dental fluorosis among school children of the Jhajjar District
of Haryana, India. The fluoride content in underground drinking water sources was found to vary in villages. Hence, the villages
were categorized as high-fluoride villages (1.52–4.0 mg F/l) and low/normal-fluoride villages (0.30–1.0 mg F/l). The source
of dental fluorosis data was school-going children (7–15 years) showing different stages and types of fluorosis who were permanent
resident of these villages. The fraction of dental fluorosis-affected children varied from 30% to 94.85% in the high-fluoride
villages and from 8.80% to 28.20% in the low/normal-fluoride villages. The results of the present study revealed that there
existed a significant positive correlation between fluoride concentration in drinking water and dental fluorosis in high-fluoride
villages (r = 0.508; p < 0.001) and insignificant correlation in low-fluoride villages. 相似文献
325.
Various agricultural and kitchen waste residues were assessed for their ability to support the production of a complete cellulase system by Aspergillus niger NS-2 in solid state fermentation. Untreated as well as acid and base-pretreated substrates including corn cobs, carrot peelings, composite, grass, leaves, orange peelings, pineapple peelings, potato peelings, rice husk, sugarcane bagasse, saw dust, wheat bran, wheat straw, simply moistened with water, were found to be well suited for the organism's growth, producing good amounts of cellulases after 96 h without the supplementation of additional nutritional sources. Yields of cellulases were higher in alkali treated substrates as compared to acid treated and untreated substrates except in wheat bran. Of all the substrates tested, wheat bran appeared to be the best suited substrate producing appreciable yields of CMCase, FPase and β-glucosidase at the levels of 310, 17 and 33 U/g dry substrate respectively. An evaluation of various environmental parameters demonstrated that appreciable levels of cellulases could be produced over a wide range of temperatures (20-50 °C) and pH levels (3.0-8.0) with a 1:1.5 to 1:1.75 substrate to moisture ratio. 相似文献
326.
Mathur S Gupta AK 《Journal of environmental biology / Academy of Environmental Biology, India》2008,29(2):201-204
During 24 and 48 hr of exposure, the digestive glands of Lymnaea treated with a lethal concentration of 0.038 mgl(-1) CuSO4 revealed intense activity of acid phosphatase in perilobular margin. On the other hand, same area of the gland showed moderate activity of ATPase during 24 and 48 hr of exposure. However, alkaline phosphatase showed average activity in perialveolar region and perilobular margin during 24 and 48, and 72 hr of exposure respectively The changes in the activity of these enzymes were nonsignificant in alveolar margin and perialveolar region of the gland. It is interesting to note moderate activity of acid phosphatase in perialveolar region during 24 hr of exposure. 相似文献
327.
Sahu MK Poorani E Sivakumar K Thangaradjou T Kannan L 《Journal of environmental biology / Academy of Environmental Biology, India》2007,28(3):645-650
The actinomycete strain LA-29 isolated from the gut contents of the fish, Mugil cephalus of the Vellar estuary showed excellent L-asparaginase activity The enzyme was purified 18-fold and the final recovery of protein was 1.9%, which exhibited an activity of 13.57 IU/mg protein. The partially purified L-asparaginase inhibited the growth of leukemia cells in male wistar rats. Average survival period of the rats was more in an optimum enzyme dose of 100 units and the survival period was less when the dosages were increased and at the same time the enzyme became less effective when the dosages were decreased. Higher survival of 17.2 days was recorded when 100 units of the enzyme was given in three intermittent doses (50/25/25 units) at the interval of 24 hr. Analysis of cell components of the strain LA-29 has revealed the wall type-I which is the characteristic of the genus Streptomyces. Further the morphological, physiological and biochemical features along with the micromorphological results obtained for the strain LA-29 were compared with that of the Streptomyces species found in Bergey's Manual of Determinative Bacteriology and the strain LA-29 has been tentatively identified as Streptomyces canus. 相似文献
328.
Arun Kumar K Achyuthan H 《Journal of environmental biology / Academy of Environmental Biology, India》2007,28(3):637-643
Heavy metals disposed through anthropogenic activities find their way into the oceans and seas through the rivers or through direct fall out from factory effluents. These heavy metals resuspend back into the water column along with the sediments and are known to affect the marine animals. Marine animals like fish, prawn, crab and mussel were collected along the East Coast (off Pulicat lake to Chennai Harbour) to evaluate trace metal concentrations in various tissues. The above specimens accumulated heavy metals such as Zn, Pb, Cu, Co, Cr, Ni and Cd. Fish, prawn, crab and mussel revealed higher concentration of heavy metals such as Zn, Pb, Cr Co, Cu and Ni and Cd in low levels. The results revealed that the heavy metal concentrations in the marine animals are below the threshold levels associated with the toxicological effects and the regulatory limits. The bioconcentration factors revealed that the animals have accumulated heavy metals along the food chain rather than from the water column and sediment. 相似文献
329.
Sajjad Haider Rab Nawaz Muzammil Anjum Tahir Haneef Vipin Kumar Oad Salah Uddinkhan Rawaiz Khan Muhammad Aqif 《Frontiers of Environmental Science & Engineering》2023,17(9):111
330.
为探讨南京秋季霾污染过程发生的主要影响因素,利用南京信息工程大学太阳光度计观测霾污染发生天气下AOD(aerosol optical depth,气溶胶光学厚度)数据,计算AE440-1020(?ngstr?m Exponent,波长指数)以及a2(光谱曲率),结合CALIPSO(Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations)卫星气溶胶组分分析以及MODIS(Moderate Resolution Imaging Spectroradiometer)火点数据,对2015年10月南京霾污染过程进行分析.结果表明:2015年10月出现的两次霾污染过程期间南京地区AE440-1020均高于1.0并且a2呈负值,其中10月16日AQI达到峰值(201),AOD500达1.51,AE440-1020达1.37,a2达-0.77;这两次较为严重的霾污染过程均主要由人为因素(工业污染、城市建设、生物质燃烧、汽车尾气排放等)产生的细粒子所致.后向轨迹分析发现,2015年10月16日南京地区霾污染天气发生的主要原因是区域型污染,同时受长距离输送影响,大量携带人为因素产生的细粒子以及少量沙尘等污染物的空气团途经内蒙古、山东等地到达南京,加剧了当日的污染程度;2015年10月23日南京地区霾污染天气的发生则主要受长距离输送影响,同时也受到区域型污染影响,加剧了当日的污染程度.研究显示,在稳定的气象条件下,较高的相对湿度、较低的地表风速、低混合层高度以及贴地逆温的出现是诱发霾污染天气产生的有利气象条件. 相似文献