20 research outputs found
Studies on Primary Productivity of Khaire Reservoir, Raigad District, Maharashtra
No full textPrimary productivity study is important for the assessment of productivity of any aquatic systems. The present investigation is carried out to understand the status of primary productivity of Khaire reservoir of Raigad district. Analysis of primary productivity was done by using standard ‘Light and Dark bottle’ method of Boyd (1981) in every last week of the month for a period of two years (February 2014 – January 2016). In reservoir the values of GPP, NPP and CR were ranged from 0.38 to 2.81, 0.19 to 1.90 and 0.18 to 1.44 mg C L-1 hr-1 respectively. The results of the present study revealed that, the primary peak of productivity was observed during pre-monsoon season and the secondary peak was noticed during post-monsoon season. However, during the monsoon season low productivity values were recorded from the reservoir. From this it can be concluded that, Khaire reservoir is productive in nature
Seasonal variations of molluscs of Mirya sandy shore, Ratnagiri
No full text1790-1795A total of 24 molluscan macro-faunal species comprising 21 bivalves and three gastropods, were recorded from the sandy shore Mirya, Ratnagiri. Among the bivalves the genus Donax and Sunetta were most abundantly recorded while the other species such as S. menstrualis, S. meroe, S. truncate, S. effosa and eight unidentified species of genus Sunetta showed patchy distribution. Other genus of bivalves such as Cardium falvum, Mactra corallina, Dosinia prostrata were also recorded which has not shown consistent occurrence throughout the study period. Gastropod Olivia olivia was the most abundant during all the months except in February while the species O. caricularia was recorded only in the month of February. Gastropod, Tibia curta was recorded only once in the month of December. Seasonal variations in molluscs were maximum during the post-monsoon and minimum during the monsoon season
Seasonal Variation of Bivalves of Intertidal Mangrove Area of Shirgaon, Ratnagiri, Maharashtra
No full textA study has been made during February 2012 to January 2013 to know the pattern of bivalve fauna in the mangrove area of Shirgaon. During the present study, nine of bivalve, viz. Anadora granosa, Brachiodontes striatulus, Dosinia sp., Meretrix meretrix, Saccostrea cucculata, Lucina sp., Tellina palatam, Trapezium sublivigatum and Polymesoda expansa were recorded. The bivalves, Brachiodontes striatulus and Saccostrea cucculata were recorded throughout the year. The species such as, Lucina sp., Dosinia sp., P. expansa and T. sublivigatum have shown inconsistence occurrence during the study period while M. meretrix, A. granosa and T. palatam were recorded only once during September, June and May respectively.
 
Toxic effect of Phorate-10G pesticide on survival of fingerlings of Catla catla (Ham. 1822)
No full textBioassay was doneto find out the toxic effect of Phorate 10G on survival of Catla fingerlings. The moisture and total ash contents of the treated fingerlings increased, whereas crude protein and crude fat content decreased with the concentration and decreased with exposure period of Phorate 10
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No full textNot AvailableBioassay was doneto find out the toxic effect of Phorate 10G on survival of Catla fingerlings. The moisture and total ash contents of the treated fingerlings increased, whereas crude protein and crude fat content decreased with the concentration and decreased with exposure period of Phorate 10GNot Availabl
Feasibility study of geospatial mapping of chronic disease risk to inform public health commissioning
No full textThis final article is available for use under the terms of the Creative Commons Attribution Non-Commercial 2.0 Licence; see http://bmjopen.bmj.co
Studies on Physico-chemical Parameters of Ambawade Reservoir, Raigad District, Maharashtra, India
No full textThe present study deals with physico-chemical parameters and their correlation coefficient of Ambawade reservoir, Raigad [M.S] India during February 2014 to January 2016. The range of various parameters of reservoirs atmospheric temperature from 25.3ºC to 36.4ºC, water temperature from 23.5 to 35.7ºC, pH from 5.80 to 8.40, DO from 4.56 to 8.32 mg L-1, transparency from 32.56 to 103.40 cm, Free CO2 from nil to 5.90 mg L-1, EC from 58.20 to 110.80 µS cm-1, TDS from 8.41 to 18.42 mg L-1, total hardness from 54.40 to 71.32 mg L-1, total alkalinity from 46.32 to 74.21 mg L-1, NO3 - -N from 0.378 to 1.024 mg L-1, PO4 -P from 0.041 to 0.310 mg L-1, SiO2 from 3.75 to 9.19 mg L-1, Mg2+ from 5.67 to 8.84 mg L-1, Na+ from 3.04 to 5.66 mg L-1 and K+ from 0.36 to 0.98 mg L-1. Correlation coefficient (r) showed high significant positive and negative relationship (p < 0.01 level) between the parameters. The results revealed that there was a fluctuation in physico-chemical parameters during the period under report
Aquaculture Based Interventions for Livelihood and Empowerment of Women in Konkan Region of Maharashtra
No full textA study was carried out to assess the possibility of carp culture in village ponds for livelihood and empowerment of women fish farmers and women SHG’s. Awareness programmes followed by training programmes on carp culture in open water bodies were conducted. A village pond of 1.5 ha area of Posheri, Palghar District and 0.8 ha area of Malgund, Ratnagiri District of Maharashtra state were selected for demonstration. The fertilisers were applied in Posheri pond to boost plankton production. A total of 10000 carp fingerlings (40-60 mm) were stocked and were fed commercial floating feed. The catla grown to a size of 1.0 to 1.2 kg whereas weight of rohu and mrigal ranged between 0.5 and 0.7 kg at the time of harvest. A fish yield of 1200 kg was obtained with a productivity of 800 kg/ha. The fishes were sold at the rate of Rs. 200/- per kg and a revenue of Rs. 2,40,000/- was realised. In Malgund pond, 2000 carp fingerlings were stocked in September, 2019. Carps were fed commercial feed and grown for a period of eight months. At the time harvest, catla reached a size of 1.2 to 1.5 kg and rohu weighed from 0.3 to 0.5 kg. A total yield of 250 kg was sold at average price of Rs. 120/- per kg in fish market of Ratnagiri and revenue of Rs. 30,000/- was generated. Thus, carp culture activity demonstrated at both places indicated a possibility for augmenting socio-economic status of women through provision of livelihoods
Análise modal aplicada à estabilidade de tensão com a inclusão de modelos dinâmicos de cargas
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Florianópolis, 1995.Este trabalho aborda a estabilidade de tensão através da metodologia dinâmica, baseada na análise modal da matriz de estados do sistema. A análise dos autovalores da matriz de estados permite avaliar a condição de operação dinâmica estável, ou não, do sistema, sob condições estipuladas. O uso dos fatores de participação, por sua vez, permite a identificação das variáveis de estado com maior influência nos possíveis modos instáveis. O trabalho indica um índice de estabilidade medido em termos da demanda máxima que pode ser acrescentada ao sistema sem que este saia da condição de operação estável. A maior contribuição desta dissertação encontra-se na inclusão do comportamento dinâmico da carga, inédita neste tipo de abordagem. Apresenta os modelos de carga, entre estáticos e dinâmicos, que segundo o autor, são os mais importantes dentre os apresentados na literatura. Efetua várias simulações em dois diferentes sistemas, envolvendo diversos modelos de carga. Os resultados obtidos ressaltam a importância de uma modelagem realista da carga nos estudos de estabilidade de tensão. Através destes, ainda, a análise modal demonstra ser um método eficiente na determinação da estabilidade dinâmica de tensão em um sistema elétrico de potência
