"સોમનાથ વિષયક ઐતિહાસિક નવલકથાઓ - એક અધ્યયન"

Not availabl

Studies on vertical garden system: A new landscape concept for urban living space

Vertical gardens are becoming a common component in contemporary garden designs at urban living space because of shrinking land spaces. Successful growing of plants in vertical garden systems depends up on growing container, plants chosen, growing media, etc. Hence a study was carried out in the Department of Horticulture, Annamalai University, with the objectives to study the influence of Coir pith, Stockosorb and Geohumus as components of growing media along with FYM, Vermicompost and Leaf mould compost on growth and performance of ornamental plants for establishment of vertical garden and to study the performance of ornamental plants Viz., Philodendron erubescens Cv. ‘Gold’ and Polyscias fruticosa plants in wooden containers for establishment of vertical garden. The experiment was laid out in Completely Randomized Design in wooden containers, with ten treatment combinations of various growing media mixtures comprising red soil, river sand as basic components in combination with organic manures (FYM, vermicompost, leaf mould compost, coir pith) and hydrogels (Stocksorb and Geohumus). The plant growth characters and ornamental value index were observed. Among the three ornamental plants used, Polyscias fruticosa and Philodendron erubescens are performed better as ornamental plants in vertical garden system with the growing media of Red soil: River sand: Vermicompost @ 1:1:1/2 + Stockosorb(25g)

A report on diversity and distribution of four non-indigenous red algae (Rhodophyceae) along the Tamil Nadu coast, Southeast coast of India

108-116The present study was revealed that four Indian invasive seaweeds such as Acanthophora spicefera, Gracilaria salicornia, Kappaphycus alvarezii and Polysiphonia brodiei were recorded along the Tamil Nadu coast with 55 study sites from Palk Bay and Gulf of Mannar regions, Southeast coast of India. Maximum abundance of A. spicefera, G. salicornia, K. alvarezii and P. brodiei were recorded in Hare Island, Thondi coast, Thonithurai coast and Chinna muttam coast respectively. Highest species dominance (0.3) was recorded for G. salicornia during monsoon season and lowest dominance (0.05) was recorded for A. spicefera during post monsoon season. Species richness (D’) varied from 0.69-0.94 with minimum recorded was G. salicornia during monsoon season. Similarly, maximum species richness (D’) was recorded for A. spicefera during post monsoon season. Species diversity (H’) was ranged between 1.70 to 3.19 with the minimum was recorded for G.salicornia during monsoon season whereas maximum was recorded for P. brodiei during post monsoon season. The dendrogram results showed that three major clusters based on the abundance of species in the study sites. Further, the results revealed that Cluster 1 occupied by more species abundance at more stations and followed by Cluster 2 and Cluster 3

Physicochemical evaluation of common purslane (Portulaca oleracea L.) accessions through correlation and regression

It is important to look at the physicochemical qualities of Portulaca, a weed species used as a vegetable and a herb for medical and therapeutic purposes. India has a wide range of variations in this species' morphology and nutraceutical value. This study aimed to evaluate the physicochemical properties of various purslane accessions from different regions of Tamil Nadu. A total of 15 purslane accessions (PA 1, PA 2, PA 3, PA 4, PA 5, PA 6, PA 7, PA 8, PA 9, PA 10, PA 11, PA 12, PA 13, PA 14 and PA 15) were collected and evaluated. Physical traits like colour of the leaves and stems were quantified as hue angle and chroma value, which showed a degree of variation. Estimates suggested that phytochemical properties related the hue and chroma of leaf and stem to the pigments in plants. Among the accessions, PA 3 has recorded the highest phytochemical properties viz., leaf total chlorophyll content 1.43±0.16 mg g-1, leaf total carotenoid content 0.24±0.03 mg g-1, stem total chlorophyll content 0.49±0.05 mg g-1, stem total carotenoid content 0.12±0.01 mg g-1 and total anthocyanin content 19.25±1.54 µg g-1. The multiple regression model suggested that the values can predict the estimated values. The evaluation of physicochemical properties along with the regression model helps in the breeding programme to select the traits; phytochemical analysis proved the ample supply of chlorophylls, carotenoids and anthocyanins, so these wild species could be a cheap source to alleviate several diseases.     

Simulation of Four Four Quadrant Operation of Three Phase BLDC Motor Using Fuzzy

Abstract-Brushless DC (BLDC) motor drives are becoming more popular in industrial and traction applications. The control of BLDC motor in four quadrants is very vital. This paper deals with the fuzzy logic control of three phase BLDC motor. Without any loss of power the motor can be controlled in all the four quadrants. During regenerative braking period energy is conserved. The calculation capability of digital signal processor and controlling capability of fuzzy logic controller is used to achieve a precise control. Index terms-BLDC motor. dsPIC, fuzzy logic control, four quadrants, regenerative braking

Population genetic structure of Garcinia imberti Bourd. an endangered endemic tree of southern Western Ghats, India

Assessing the genetic diversity of endemic plants is of great importance in future conservation programmes. The genetic diversity in Garcinia imberti from Agasthyamala Biosphere Reserve of southern Western Ghats was assessed through ISSR markers by molecular characterization with 15 primers. A total of 157 accessions from six populations were used for the study. They generated 102 amplified products, out of which 89 were polymorphic (87.25%). It produced an average of 6.8 bands per primer and 5.93% polymorphism per primer. The present study revealed that G. imberti has moderate level of genetic diversity at species level but differs at population level. The dendrogram constructed following UPGMA exhibited that all accessions were clustered together except Poonkulam population. The genetic diversity analysis of G. imberti showed that even though the populations are closely associated, every population have their own characteristic diversity and should be conserved. Among the populations, Chemunji is the largest one with more genetic diversity and may conserve as the potential source of gene pool of this species

Monsoon onset over Kerala and pre monsoon rainfall peak

In the present study the pentad Global Precipitation Climatology Project (GPCP) estimate have been used, which is a blended product of microwave, infrared and in-situ gauge data for the region bounded by 8 ° - 13 ° N; 70 ° - 95 ° E, from 1st March to 31st May for the years 1979 to 2001. The monsoon onset dates over Kerala, as declared by India Meteorological Department has been used in the present study. For each year, the midday of the pentad with the rainfall peak was looked for in the period from 1st April to 10th May and identified as the Pre Monsoon Rainfall Peak (PMRP). The analysis showed that PMRP exists about seven pentads prior to the onset of the monsoon over Kerala coast. The correlation between PMRP date and the monsoon onset date over Kerala was found to be 0.72, which was statistically significant. Thus, as is felt that the pre monsoon rainfall estimate from the satellite data can be used for predicting the monsoon onset over Kerala coast. The results and the methodology used are briefly presented

Characterization of Salivary Glutathione reductase in Normal Individuals and its Implications on Smokers

Abstract: The assay of saliva is an increasing area of research with implications for basic and clinical purposes. Although this biological fluid is easy to manipulate and collect, careful attention must be directed to limit variation in specimen integrity. In this study, glutathione reductase (GR) activity of saliva obtained from smokers and non smokers of both the sex of various age groups were assessed. The investigation of salivary GR from non smokers revealed a pH optimum of 6.8, temperature optimum as 37ºC and a low K m of 0.058 mM for the substrate (Oxidized glutathione, GSSG). A significant reduction in the salivary GR activity has been observed from smokers of both acute and chronic than the non smokers. A drastic decrease in the GR activity was noticed in chronic smokers than the acute smokers, proving the possibility of utilizing the enzyme as a diagnostic biomarker for detecting the oral, throat and neck cancers. This optimized developed protocol was also found to be simple and cost effective

Ophiorrhiza, a promising herbaceous source of the anticancer compound camptothecin

Camptothecin is an important source for the synthesis of some of the major anti-cancer agents such as irinotecan and topotecan. Traditional source of camptothecin are prominently woody plants such as Camptotheca acuminata Decne. and Nothopodytes nimmoniana (Graham) Mabb., and the increasing demand for camptothecin leads to the level of threatening their existence. Ophiorrhiza species composed of herbaceous plants with quick growth characteristics which are reported as alternative source of camptothecin. The present review focus on taxonomical status, traditional uses, biological activities and phytochemical constituents with a special attention in bioproduction of camptothecin from Ophiorrhiza species and its future prospects

A survey on the knowledge, perceptions and practices regarding unwanted medicine disposal among pharmacists in Sri Lanka

Background: Unwanted medicines are defined as expired, unused, damaged or contaminated pharmaceutical products. Improper disposal of unwanted medicines leads to many health and environmental hazards. The World Health Organisation recommends that unwanted medicines should always be disposed properly. The main objective of this study was to assess the knowledge, practices and perceptions on the disposal of unwanted medicines among pharmacists in Sri Lanka.Methods: A cross-sectional study was carried out among pharmacists in 40 private retail pharmacies in the Northern, Eastern and the Western provinces within a period of three months. The pharmacies were selected via stratified randomised sampling in each district. The most experienced pharmacist in each pharmacy was recruited for data collection. A pre-tested, self-administered questionnaire was used. The ethics approval was obtained (Ref: EC-12-190). The data was represented using simple descriptive statistics.Results: The data was collected from 40 pharmacies. Among the pharmacists, 65% were males. The majority answered that burning and landfill as the most appropriate methods of disposal for most of the types of medicinal waste. A significant number of pharmacists were not aware about the method of disposal for anti-infective agents and anti-neoplastic agents. The majority perceived the seriousness of environmental damage caused by disposal via trash or sink. A majority was not agreeing to have pharmacies as collecting centers for unwanted medicines. A discrepancy between the pharmacists’ perceptions and the practices was observed.Conclusions: The level of knowledge, practices and perceptions among pharmacists on unwanted medicines disposal was substandard and needs attention