Ultra Structural and Analytical Studies of Biodiesel Producing Microalgae (Chlorella vulgaris and Senedesmis sp.) Collected from Tamil Nadu, India

Microalgae are an economical choice for biofuel production, because of its availability and low cost. Our studies prove that biodiesel can be produced from Freshwater (Temple tanks, Forest lagoons, Inland lakes, Rock ponds) microalgae (Chlorella vulgaris, Senedesmis sp). The Nile Red fluorescence method described in our present study provides a rapid, easily manipulated and reliable method for in vivo quantification of neutral lipids in various microalgal taxa, particularly those belonging to the Chlorophyceae, that were previously found difficult to stain with Nile Red method. The optimum drying period of microalgae biomass is determined to be 120 min. The percentage of lipid content during n-Hexane soaking period (Chlorella vulgaris) is 49% during 210min. Extraction of lipid fragments through solvent extraction method from biomass and the fractions were analysed for biodiesel under FT-IR and GC-MS

Analysis of algal cell elements collected from temple tanks, rock ponds and seashore in Kovalam and Mahabalipuram, Tamil Nadu, India

Four species of micro and macroalgae collected from Mahabalipuram and Kovalam were analyzed for their elemental composition with the help of Perkin Elmer Optima DV Inductively Couple Plasma – Optical Emission Spectroscopy. Several significant elements e.g., Calcium, Magnesium, Sodium, Potassium and Iron were detected quantitatively. Calcium, Potassium, Magnesium were found in large amounts (22.461 – 626.385 ppm), Iron and Sodium were present in small quantities (2.391 – 6.167 ppm). The average quantity of Potassium was found to be highest among these algae (626.385 ppm), followed by Calcium (65.253 ppm) and Magnesium (22.461 ppm) and low quantity of Sodium (6.167 ppm) and Iron (2.391 ppm)

Length based population characteristics and fishery of skipjack tuna, <em>Katsuwonus pelamis</em> (Linnaeus, 1758) from Tuticorin waters, Tamil Nadu, India.

52-59Fishery and population characteristics of skipjack tuna (Katsuwonus pelamis) along Tuticorin coast were studied for the period of one year from June 2016 to May 2017. Population parameters of Katsuwonus pelamis based on the length frequency data collected from fish landing centers of Tuticorin. Lengths ranging from 25 to 80 cm total length were observed and analyzed in current study. The population parameters L∞, K, M, Z and F were estimated as 95.70 cm, 0.40 year-1, 0.73, 1.63 and 0.90 respectively. Virtual Population Analysis (VPA) indicated that noticeable fishing mortality starts from 35-39 cm class interval and continued increasing till 50-54 length class. Afterwards a general decline in fishing mortality was observed with a relatively heavy fishing pressure on penultimate length class. The exploitation ratio (E) of 0.55 was derived from present study which is less than the maximum exploitation ratio (Emax = 0.805) indicating a scope for potential increase in production

सिल्वर पोम्पानो (ट्रकिनोटस ब्लोची) - तडीय तालाब में पालन के लिए एक संभावित प्रजाति

Silver pompano Trachinotus blochii a potential species for coastal pond farmin

The BOBO Project: Hexa-Eagles

The consumer business has undergone a substantial shift in how customers to shop since the introduction of online shopping. When the world was affected by Covid-19 in 2020, one of the most major repercussions was in the Food & Beverage (F&B) and grocery industries. As a result of the pandemic, many cities were put under lockdown, and everyone remained indoors. Consumer purchasing patterns changed dramatically, with malls closing or operating with limited access, and customers avoiding common spaces for fear of getting the virus. As the global epidemic progressed, several firms were forced to close their physical locations due to huge losses arising from a lack of consumer purchases. However, many firms relocated their products and services online, giving courier and delivery services a major boost. This gave the last-mile or last-quarter-mile delivery industry a chance to demonstrate its efficiency, convenience, and safety. These are the parts of the delivery process when goods or services are delivered directly to customers from local stores or a satellite consolidation and re-delivery center. Riders and drivers for delivery services rose to the occasion and assisted in keeping life as normal as possible

Health management in hatchery and grow-out mariculture

Mariculture has been steadily growing over the last few decades. To satisfy the increasing demand of local and export markets for fish and to control overexploitation of marine fish species, many countries are expanding mariculture activities. Disease is one of the most limiting factors in mariculture. Intensification of mariculture favours pathogens, which increase disease outbreaks. Diseases are broadly classified into infectious and non-infectious diseases. Infectious diseases are further divided into four groups based on the nature of the pathogen: viral, bacterial, parasitic, or fungal. Non-infectious diseases are divided into neoplastic diseases, genetic and environmentally induced diseases, and nutritional deficiency diseases. Sustainable aquaculture production can only occur when fish are healthy and free from disease. Fish disease management is a combination of preventing the onset of disease and measures to reduce losses from disease when it occurs

Crystal structure of isobutyl 4-(2-chloro-phenyl)-5-cyano-6-{(E)-[(dimethylamino)-methylidene]amino}-2-methyl-4H-pyran-3-carboxylate

The authors thank Dr Babu Varghese, Senior Scientific Officer SAIF, IIT Madras, India, for carrying out the data collection.Peer reviewedPublisher PD

आर्थिक रूप से विपणन योग्य सिल्वर पोम्पानो हैचरी उत्पादन

Hatchery production of commercially important Silver pompan

Water Management in the Noyyal River Basin A Situation Analysis

The Noyyal sub-basin, which is 3510 sq km in area, is part of the Cauvery basin that lies in the state of Tamil Nadu. It is a rapidly urbanizing sub-basin that includes the Class I cities of Coimbatore and Tiruppur as well as 84 smaller urban settlements. Water issues in this basin have been the focus of much public debate and action over the last two decades. Most of the debate, triggered by farmer agitations and court cases, has focused on the question of water pollution; water scarcity and sustainability issues have received relatively little attention. Recent bans on industrial effluent discharge into the Noyyal, as well as changes in water supply infrastructure, watershed development activities, urban demand and agricultural water use have dramatically altered the future of the Noyyal River and merit follow-up studies. The purpose of this situation analysis is to summarize the current state of knowledge regarding water resources management in the Noyyal sub-basin and identify critical knowledge gaps to inform water-related research in the basin. It is hoped that such an analysis will help those studying or working on water issues in the Noyyal, and also provide useful insights for other urbanizing basins