113 research outputs found
A SECURED AUTHENTICATED WATERMARKING TECHNIQUE
Whenever media contents transmitted through the network, compressed and encrypted media data is used so it is important to give proper protection to the data items to avoid unauthorized access and for that we need to enhance media authentication and for that the compressed encrypted media data which is used to distribute through the network is watermarked for providing proof of ownership or distributorship. For doing compression JPEG 2000 compression and while doing compression the data is packed to┬а low┬а number of bits and to this data encryption is applied so┬а stream cipher technique is used for avoiding media quality degradation and also this technique allow to do watermarking in a predictable manner. And a robust watermarking algorithm is used for watermarking this compressed and encrypted media data
Growth and maturity of Indian oil sardine Sardinella longiceps (Valenciennes, 1847) along southwest coast of India
Growth studies are important to determine the total recruitment of fish
with respect to time while information on age and length at first maturity
are essential to assess the spawning stock. The present communication
deals with growth, maturity and mortality parameters of Indian oil
sardine Sardinella longiceps from southwest coast of India. Length at
first maturity of oil sardine was found to be 15.7 and 15.2 cm for male
and female, respectively. Comparison of length at first maturity of oil
sardine with earlier studies showed only minor variations. The growth
parameters LтИЮ, K, and age at zero length (t0) were calculated as 19.8 cm,
1.14 yr-1 and -0.0464 respectively. From the VBG equation, the length
attained at the end of I, II and III year is estimated as 13.79, 17.87 and
18.9 cm respectively. Two peaks of recruitment to the fishery were
observed. The values of total mortality (Z), natural mortality (M) and
fishing mortality (F) estimated are 4.33, 2.7 and 1.6 respectively. The
exploitation rate was found to be 0.37
Silver nanoparticles green synthesis: A mini review
Nanotechnology is a significant field of contemporary research dealing with design, synthesis, and manipulation of particle structures ranging from in the region of 1-100 nm. Nanoparticles (NPs) have broad choice of applications in areas such as fitness care, cosmetics, foodstuff and feed, environmental health, mechanics, optics, biomedical sciences, chemical industries, electronics, space industries, drug-gene delivery, energy science, optoelectronics, catalysis, single electron transistors, light emitters, nonlinear optical devices, and photo-electrochemical applications. Nano Biotechnology is a speedily mounting scientific field of producing and constructing devices, an important area of research in nano biotechnology is the synthesis of NPs with different chemical compositions, sizes and morphologies, and controlled dispersities. Silver nanoparticles (NPs) have been the subjects of researchers because of their unique properties (e.g., size and shape depending optical, antimicrobial, and electrical properties). A variety of preparation techniques have been reported for the synthesis of silver NPs; notable examples include, laser ablation, gamma irradiation, electron irradiation, chemical reduction, photochemical methods, microwave processing, and biological synthetic methods. This assessment presents a general idea of silver nanoparticle preparation. The aim of this analysis article is, therefore, to replicate on the existing state and potential prediction, especially the potentials and limitations of the above mentioned techniques for industries
Paralarva of the sharpear enope squid Ancistrocheirus lesueurii (Oegopsida: Ancistrocheiridae) in the southeastern Arabian Sea
First morphological description of an early stage paralarva of the
sharpear enope squid Ancistrocheirus lesueurii from southeastern
Arabian Sea is presented. The paralarva was collected at dusk by
using surface tows of zooplankton nets in February 2012. The
presence of paralarva A. lesueurii indicates that this species
completes its life cycle in this sea. A comparison of the arm
formula of paralarva and adult stages shows a major change in
the formula during metamorphosis to adult
Influence of coastal upwelling on the fishery of small pelagics off Kerala, south-west coast of India
In order to evaluate the impact of the interannual changes of upwelling on the small pelagics, the average chlorophyll a
concentrations were compared with the fishery. The catch of small pelagics, especially that of the oilsardine increased from
1, 554 t in 1994 to 2,50, 469 t in 2007 in the Malabar upwelling zone off Kerala, India. The coastal upwelling index (CUI)
during south-west monsoon increased by nearly 50% during the period 1998 to 2007. This substantial increase in coastal
upwelling index elevated chlorophyll a concentration during monsoon which resulted in an increase of over 200% in annual
average chlorophyll a concentration. The increasing coastal upwelling index and chlorophyll a during monsoon sustained an
increasing catch of oilsardine during postmonsoon season. The responses of lesser sardine and Indian mackerel, which are
midlevel carnivores, were different. The population increases of the oilsardine appear to replace decreases in the lesser
sardines and Indian mackerel during the postmonsoon season
Scientific advisory on water quality management for traditional fish farms
Female whale shark, Rhincodon typus
measuring 475 cm in length and approximately 800
kg in weight was stranded near Ayikkara Fisheries
Harbour in Kannur District on 25th November 2011.
Whale shark is locally called as тАЬpullisravuтАЭ and the
stranding of this species is not common in shallow
waters along the Malabar region. Whale shark is
listed as an endangered species as per the IUCN
Red List
Prevalence of multidrug resistant uropathogens isolated from different age groups in South-India: a cross-sectional study
Background: Urinary tract infections (UTIs) continue to be one of the most common infections encountered by clinicians. The purpose of this study is to identify relevant multidrug resistance (MDR) patterns in South India.Methods: 401 urine culture samples with significant bacteriuria were collected from labs in South India between January 2019 and December 2020. Routine biochemical tests were conducted for primary identification of uropathogens. Antibiotic susceptibility testing was performed according to Clinical and Laboratory Standards Institute (CLSI) guidelines. Statistical package for the social sciences (SPSS) 16 and Microsoft excel were used to analyse data and determine MDR patterns.Results: The results showed that 54% of cultures with significant bacteriuria exhibited an organism with multidrug resistance. Of these, extended-spectrum beta-lactamases (ESBL) resistance was confirmed in 34.9%. Furthermore, over half (54%) of significant cultures were from outpatients. The incidence of UTIs was highest during the summer and at the lowest in the second phase of the monsoon season.Conclusions: Although the sample collection was limited to a few centres in South India, the results of our study justifies the rationale behind stringent regulation of antibiotic use and careful monitoring of antimicrobial resistance
Rapid assessment of the fish trade, arrivals and price realization in Kerala
Fisheries contribute to around 3 % of the
economy of Kerala and provides employment to
about 2.14 lakh people including its secondary and
tertiary sectors such as marketing and processing.
The marine fish landings in Kerala (2015) was 4.82
lakh tonnes forming 73.36 % of the total fish
production in the state. A considerable 30%
reduction in the marine fish landings during 2015
compared to the average (2010-14) landings of 6.82
lakh tonnes was noticed
Impulse effect of demonetisation on the fishing operations, trade and fish consumption in Ernakulam, Kerala
A rapid survey was conducted during 24-26
November 2016 in order to assess the effect of
demonetisation of the ` 1000 and ` 500 currency
bills on the marine fishing operations, trade and
fish consumption in Ernakulam district, Kerala across
different landing centres and markets. A structured
schedule eliciting information on the details related
to the total number of fishing operations, crew size,
landings, price realised, etc. was used (Annexure
1). The traders (exporters, wholesalers and
retailers) were queried on the changes in the
quantum of transaction and prices (paid and
demonstration realised) during the pre and past
periods. The study analysed the extent of different
fishing operations by mechanised, motorised and
non-mechanised sector in the landing centres /
harbours of Munambam, Chellanam, Fort Cochin,
Cochin Fisheries harbour and Kalamukku during the
pre-demonetised (prior to 8th November) and post
demonetised (9-23 November 2016) period covering
a fortnight The fishing operations include the
number of trips, days of fishing, depth of fishing,
crew size, crew share, operating cost etc. The
traders from the Broadway, Thevara, Thoppumpady,
Chambakkara and Kaloor fish markets were
interviewed for assessing the status of the business
during these days. In addition, consumers were
interviewed on their pattern of fish consumption
during the period
Course Manual on Marine Fisheries & Mariculture Prepared for the Training programme for B.F.Sc students of Central Agricultural University (CAU), Tripura
The undergraduate Fisheries Science students are required to know about the inland and marine fisheries. The students from landlocked area are getting rare opportunity to understand the marine fisheries and mariculture activities. Hence, based on the request of the Central Agricultural University (CAU), Tripura as a part of their academic activities, the Director, ICAR-CMFRI, has kindly approved a 10 days in-plant training for B.F.Sc. final year students at the ICAR-Central Marine Fisheries Research Institute (CMFRI), Mandapam Regional Centre. The training was organized in collaboration with Agricultural Technology Information Centre (ATIC), ICAR-CMFRI, Kochi. A total of 27 B.F.Sc students and a faculty of Central Agricultural University (CAU), Tripura participated in the training programme during 17th to 26th January, 2020. The training emphasized on the skill development of students through hands on training on mariculture activities and field visits to fish landing centres. A course manual was prepared covering the major topics on marine capture fisheries and mariculture. I congratulate all those who have put in their sincere efforts to bring out this manual
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