Unusual landing of Hilsa ilisha in gill net at New Ferry wharf, Mumbai

an unusual landing of 1200 kg of Hilsa ilisha was observed at New Ferry Wharf. H.ilisha is locally known as ‘paala’ and has very high demand in local markets

Unusual landings of Arius dussumieri by Karli dol net at Basien Koliwada

Arius dussumieri was landed by a Karli dol netter from a single haul from a depth of 24- 26 m at a distance of 40-50 km toward Gujarat. Karli dol is a fixed floating bag net, which is used by artisanal fishermen at Bassein Koliwada for catching pomfrets. The operation of this net is restricted to a depth of about 24-36 m

Unusual landing of yellow fin tuna at New Ferry Wharf, Mumbai

On 29-1-05 about 60 numbers of yellow fin tuna were landed at New Ferry wharf,Mumbai by two boats. The size of the tuna ranged from to 160 cm with each tuna weighing approximately 70-90 Kg

On a whale shark, Rhincodon typus Smith, landed at Dakti Dahanu and Gungwada, Thane, Maharashtra

On 21st December 1999, a whale shark Rhincodon typus Smith (Male) got entangled in a nylon gill net (locally called wagrajal) at about 0400 hrs., at a depth of 40M. was landed at Dakti Dahanu & Gangwada

Numerical investigation of oil injection in a Roots blower operated as expander

The adoption of positive displacement machines as expanders in Organic Rankine Cycles (ORCs) is increasingly common, especially in the low to medium power range. At the same time, these devices often serve as compressor in Vapor-Compression Refrigeration Systems. In both cases, the application of Computation Fluid Dynamics (CFD) to optimize such machines has become an integrated tool in the design process. As a consequence, several challenges associated with the numerical simulation have to be taken into account. For example, the modeling of the gap represents a challenge for the stability of the numerical analysis. The dynamic of the process, combined with deformations of the clearances and of the working chamber has to be considered with extra care. To raise the efficiency of the machine, oil is typically injected. Its numerical modeling imply an extra challenge in the simulation of the actual operation of the machine. The present work is mainly focused on the multi-phase nature of the flow, with a particular analysis of the lubricant oil injected. In this work, a two-lobe Roots blower operated as expander has been simulated with the open-source software OpenFOAM-v1812, using the SCORG-V5.2.2. This analysis highlights the areas that are affected the most by the oil presence in order to highlight the sealing effect it provides

Biochemcial Changes in Powery Mildew Infected Leaves of Abelmoschus esculentus

Four types of leaf samples A1, A2 , B1 and B2 were taken from healthy and infected plants; and their free amino acids, sugars and organic acid contents were analyzed chromatographically. In case of free amino acids lysine, arginine, asparatic acid, glutamic acid, glycine and phenylatanine were found in all. There was no qualitative difference except for lysine, which gets totally consumed during the course of pathogenesis. Quantitatively was a general increase in amino acid content in B1 sample. In all three sugars were detected, they were fructose, sucrose and raffinose in all the four sample. There was a gradual decrease in the concentration of fructose and sucrose during the pathogenesis. While raffinose was maximum A1 in sample. Organic acid detected in these samples were sebacic acid, adipic acid, succinic acid, maleic acid and citric acid. Succinic acid was totally missing in B2 sample. While adipic and citric acid were maximum in B2 sample. The maximum concentration of sebacic acid was A1 sample and was least in B2. The concentration of maleic acid was maximum in A2 sample

Unusual landing of Seriolina nigrofasciata at New Ferry Wharf, Mumbai

Seriolina nigrofasciata (Ruppell, 1829) is a broadly distributed non-schooling, solitary species in the depth realm of 20 to 150 m. It feeds on demersal fish, cephalopods and prawns

पिंजऱ्यातील मत्स्यशोतिचे पर्यावरणावरील परिणाम आणि त्यांचे उपशमन

Cage aquaculture requires suitable site, materials to fabricate cage, nutritionally balance feed and healthy seed. The cage farm depending upon intensification generates the considerable wastes which include uneaten food, excretory products (faecal matter and urinary products). Many cage aquaculture activities utilize chemicals for prophylactic as well as therapeutic purpose which further contributes to the total waste discharge. Further, microorganisms and parasites associated with caged fish also contribute towards cumulative environmental degradation

Numerical investigation of flow characteristics in twin-screw pump under cavitating conditions

In order to investigate the flow characteristics and the formation process of cavitation in twin-screw pumps, three-dimensional CFD (Computational Fluid Dynamics) numerical analysis has been carried out. A conformal structured moving mesh generated by an in-house code SCORG was applied for the rotor domain. The VOF (Volume of Fluid) Method has been adopted for dealing with the liquid-gas two-phase flow, while the bubble dynamics was handled by a homogenous cavitation model. By changing the rotation speed and discharge pressure, the intensity, distribution area and variation of cavitation at different rotor angle were obtained. The effects of rotation speed and discharge pressure on cavitation characteristics have been analysed. Calculation results with cavitation model are compared with the results without cavitation and the experimentally obtained values. The influence of cavitation on the performance of a screw pump in terms of the mass flow rate, pressure distribution, rotor torque and the shaft power have been analysed and discussed

Unusual landing of silver pomfret,Pampus argenteus by karali dol net at Bassein Kolliwada(Vasai)landing centre,Thane district,Maharashtra

Post monsoon fishing from 10th june to 15 th Augustis avery important period for the silver pomfret Pampus argenteus in traditional Karli dol net fishery at Bassein Kolliwada landing centre,Thane district,Maharashtra