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Comparative Study of Corrosion Inhibition Efficiency of Naturally Occurring Ecofriendly Varieties of Holy Basil (Tulsi) for Tin in HNO<sub>3</sub>Solution

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Open Journal of Metal 2012年第3期2卷 68-73页

作者： nutan Kumpawat Alok Chaturvedi Rajesh kumar Upadhyay Synthetic and Surface Science Laboratory Department of Chemistry

Weight loss technique has been used to study the corrosion inhibition efficiency of tin in HNO3 solution by using the leaves and stem extract of different varieties of Holy Basil viz. ocimum basilicum (EB),, ocimum cannum (EC) and ocimum sanctum (ES). The results show that all the varieties under study are good corrosion inhibitors, among which leaves extract of EB is the most effective. Corrosion inhibition efficiency increases with increasing concentration of inhibitor and it also increases with increasing concentration of HNO3 solution. Inhibition efficiency was found maximum up to 96.19% for tin in with 0.6% leaves extract.

关键词： Acid Solution Inhibitors Tin Metal Weight Loss Surface Coverage

Expression of SAMDC Gene for Enhancing the Shelf Life for Improvement of Fruit Quality Using Biotechnological Approaches into Litchi (Litchi chinensis Sonn.) Cultivars

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Advances in Bioscience and Biotechnology 2016年第6期7卷 300-310页

作者： Dilip kumar Das Manoj Prabhakar Dipti kumari nutan kumari Post Graduate Department of Biotechnology T.M. Bhagalpur University Bihar India

Polyamines play an important role in plant response to abiotic stress. S-adenosyl-1-methionine decarboxylase (SAMDC) is one of the key regulatory enzymes in the biosynthesis of polyamines. In order to better understand the effect of regulation of polyamine biosynthesis on the shelf life improvement of litchi fruit, SAMDC cDNA isolated from Datura stramonium cloned in pBI121 was introduced into litchi genome by means of Agrobacterium tumefaciens through zygote disc transformation. Transgene and its expression are confirmed by Southern and Northern blot analyses, respectively. Transgenic plants expressing Datura SAMDC produced 1.7- to 2.4-fold higher levels of spermidine and spermine than wildtype plants under normal environmental condition, which indicated that the transgenic litchi presented an enhanced polyamines synthesis compared to wildtype plants. Our results demonstrated clearly that increasing polyamine biosynthesis in plants may be a means of creating improved fruit shelf life germplasm.

关键词： Shelf Life Litchi chinensis Sonn. Datura stramonium S-Adenosylmethionine Decarboxylase Polyamines Transformation

Genetic Diversity of Marine and Fresh Water Cyanobacteria from the Gujarat State of India

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Advances in Bioscience and Biotechnology 2014年第14期5卷 1061-1066页

作者： Nilkanth Faldu Shivani Patel nutan Prakash Vishwakarma Anil kumar Singh Khushbu Patel Neepa Pandhi Department of Biotechnology Shree M. & N. Virani Science College Gujarat India

Cyanobacteria from habitats within Gujarat have been poorly studied with regard to their diversity. In the present investigation eight morphologically distinct cyanobacterial isolates were obtained and characterized from the fresh water and marine habitats. Identification was performed based on morphological features and on 16S rDNA sequences analysis. A phylogenetic tree based on 16S rDNA sequence of cyanobacterial isolates was prepared. Phylogenetic analysis clustered the eight morphologically distinct isolates into two distinct groups thus highlighting the importance of both morphological and genetic methods in studying cyanobacterial diversity.

关键词： Cyanobacteria 16S rDNA Phylogenetic Analysis Cyanobacterial Diversity

Malaria Outbreaks in Villages in North Karnataka, India, and Role of Sibling Species of <i>Anopheles culicifacies</i>Complex

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Health 2015年第8期7卷 946-954页

作者： Satyanarayan Tiwari Susanta kumar Ghosh Thiruchrapalli S. Sathyanarayan nutan Nanda Sreehari Uragayala Neena Valecha Field Unit National Institute of Malaria Research (ICMR) Bangalore India National Institute of Malaria Research (ICMR) New Delhi India

Investigations on malaria outbreaks and role of sibling species complex of principal rural malaria vector Anopheles culicifacies were carried out in villages in north Karnataka, India from 1997 through 2014. Information regarding densities, resting and breeding habitats of malaria vectors prevalent in the area was also generated so as to formulate an appropriate vector control strategy. The Slide Positivity Rate (SPR), Slide Falciparum Rate (SFR) and Pf proportion was 43.1%, 35.9% and 83.3%, respectively. Three sibling species A, B, and C of An. culicifacies were found sympatric with cumulative percent composition of 63.7, 28.2 and 8.1, respectively. Per man hour and per structure densities of An. culicifacies, An. culicifacies and An. culicifacies varied from 0 to 27.5 and 0 to 56.0, 0 to 0.5 and 0 to 7.0 and, 0 to 2.5 and 0 to 7.5, respectively. The proportion of semi-gravid and gravid females was more as compared to fully fed and unfed females which indicated that most of the females rested indoor. Streams/river, wells, seepages and irrigation tanks are the major habitats supporting breeding of An. culicifacies. Integrated vector managements by indoor residual spraying of effective insecticide as per national guidelines along with biological control methods especially use of larvivorous fish Gambusia affinis and Poecilia reticulate are suggested to control malaria in the area.

关键词： Malaria Anopheles culicifacies Sibling Species Biological Control North Karnataka