Modeling Study of Beach Placer Minerals using Artificial Neural Network: A Case Study

In recent years, artificial neural network (ANNs) have been found to be an attractive tool for steady-state /dynamic process modeling, and model based control in situations where the development of phenomenological or the empirical models just given either becomes impracti-cal or cumbersome. ANN technology is well suited to solve problems in the mineral industry, and is expected to have a significant impact in many technological areas. Beneficiation plants for beach sand minerals are often very complex in nature with a number of alternative flow sheets are possible for the same mineral sand deposits

Influence of certain environmental parameters on mass production of rotifers: A review

Larviculture of many finfishes and crustaceans in aquaculture depends mainly on the live feed and its unavailability in sufficient quantity is hampering its expansion and culture progress all around the world. The most suitable feed for marine finfish larvae is the commonly available zooplankton species such as rotifer, copepods and Artemia nauplii. Among all, the live feed that has been demonstrated more successfully as the first feed for most of the marine finfish species is rotifer. Optimum conditions are required for better growth, reproduction and increased productivity of rotifers. The major factors that influence the population size of rotifer are temperature and salinity. Hence, the impact of environmental parameters with special focus on the salinity and temperature on the increase in biomass and smaller rotifer production is of utmost importance in the present scenari

Solid waste management in Rameswaram Island - “Green Ramesawaram project”

Hand in Hand Inclusive Development and Services (HHIDS), is a non-profit company registered under Section-25 of the Indian Companies Act, 1956 with its office at Kancheepuram, Tamil Nadu, India. HHIDS works in the field of Solid Waste Management. This involves educating the people in waste management principles, conducting awareness programs and on field implementation of waste management. The project also ensures that the practices are implemented in a sustainable manner through community participation. The long-term objective is thus to reduce the environmental degradation caused by the unscientific handling of solid waste. The project aims at ensuring environmental, social and financial sustainability in a period of three years and advocating the 3 R concepts (Reduce, Reuse and Recycle), to achieve that the people are educated on the importance of segregating garbage at source and avoiding usage of disposable plastics. At present, Hand in Hand’s solid waste management project is implemented with community participation at 22 locations, in 8 districts, in the State of Tamil Nadu, Andhra Pradesh, Gujarat, and Union Territory of Puducherry; covering 156,878 families with a total population of 6, 27,512

Portunus (Portunus) pelagicus (Linnaeus, 1758)

Carapace rough to granulose, front with 4 acute triangular teeth; 9 teeth on each anterolateral margin, and the last tooth being larger than the preceding teeth. Chelae elongate in males; larger chelae with conical tooth at base of finger, typically males have bluish green colour markings and females are dull green or greenish brown

Sea erosion along the Andhra Pradesh coast

Andhra Pradesh with a coastline of around 974 km has frequently been affected by cyclones and inundated by storm surges. Sea erosion is noticed at Visakhapatnam, Bhimunipatnam and in the East and West Godavari districts. Vishakhapatnam coast is facing erosion since long specially at Ramakrishna Beach. In 2013 and 2014, the cyclones ‘Phailin’ and ‘Hudhud’ further hastened erosion of the Ramakrishna Beach, severely damaging the adjacent protection wall and road. Uppada village which is 22 kilometres away from Kakinada also faces severe erosion. The Kakinada-Uppada road is gradually disappearing due to shoreline erosion

Blue Carbon Stock of Seagrass Meadows of Chilika and Pulicat Lakes along the Eastern Coast of India

Blue carbon stock of seagrass meadows of Chilika (Odisha) and Pulicat (Tamil Nadu) Lakes located along the eastern coast of India is estimated from the data collected on soil organic carbon content (C org) of monospecific or multispecific seagrass habitats up to 30 cm depth sampled during 2018- 2019 period. Chilika Lake harbours five seagrass species in addition to the invasive aquatic weed Potamogeton pectinatus. Seagrass habitats in the Pulicat Lake are formed of monospecifc species of seagrasses in association with considerable quantities of red and green seaweed resources. The blue carbon stock of seagrass habitats up to a depth of 30 cm of Chilika Lake was estimated to 2.018±0.673 M gC ha-1 while that of Pulicat Lake was determined to 0.998± 0.418 M gC ha-1. Our results do contribute to the global data sets on blue carbon stored in seagrass habitats and its significance on carbon trading

Water quality requirements for Recirculatory Aquaculture Systems

Culture of marine finfishes in a controlled condition is an upcoming industry, which is very much essential to satisfy the rising demand for protein rich seafood. Traditional aquaculture ponds use huge quantity of water and land to produce lesser output. Whereas Recirculatory Aquaculture System (RAS) is one such system in which fishes are cultured in high density at controlled environmental condition with lesser usage of water and comparatively less area of land to produce higher output. RAS is designed to minimize or reduce dependence on water exchange and flushing in fish culture units. The systems have practical applications in commercial aquaculture hatcheries, holding tanks and aquaria systems as well as small scale aquaculture projects. Water is specifically recirculated, when there is a specific need to minimize water replacement, to maintain the quality condition which differ from the supply water or to compensate for an insufficient water supply

Rotifer as a live feed in finfish mariculture

Among all, the first live feed that has been demonstrated successfully as first feed for most of the marine finfish species is the rotifer. It is considered as an excellent food for newly hatched fish larvae due to its small size, slow swimming speed, high calorifc value, parthenogenetic reproduction and ability to be easily enriched with antibiotics and fatty acids. Rotifers are a group of aquatic microscopic invertebrates and are commonly called 'wheel animalcules' as their disc like . corona bears resemblance to a pair of revolving wheels due to the synchronized beating of their coronal cilia. The rotifers are well represented in freshwater plankton, but only a few species of them are found in brackish waters and fewer still in the sea

ఫింఫిష్ మెరికల్చర్ లో లైవ్ ఫీడ్ గా రోటిఫర్ (Telugu version of Rotifer as a live feed in finfish mariculture)

Among all, the first live feed that has been demonstrated successfully as first feed for most of the marine finfish species is the rotifer. It is considered as an excellent food for newly hatched fish larvae due to its small size, slow swimming speed, high calorifc value, parthenogenetic reproduction and ability to be easily enriched with antibiotics and fatty acids. Rotifers are a group of aquatic microscopic invertebrates and are commonly called 'wheel animalcules' as their disc like . corona bears resemblance to a pair of revolving wheels due to the synchronized beating of their coronal cilia. The rotifers are well represented in freshwater plankton, but only a few species of them are found in brackish waters and fewer still in the sea

జెల్ల్లీఫిష్ వైవిద్యం మరియు ఆంధ్ర ప్రదేశ్ తీరం వెంబడి లభ్యత - జెల్ల్లీఫిష్ కాటుకు ప్రధమ చికిత్స్య చర్యలు (Jellyfish diversity and distribution along the coast of Andhra Pradesh - First aid measures of Jellyfish stings)

జెల్ల్లీఫిష్ వైవిద్యం మరియు ఆంధ్ర ప్రదేశ్ తీరం వెంబడి లభ్యత - జెల్ల్లీఫిష్ కాటుకు ప్రధమ చికిత్స్య చర్యలు (Jellyfish diversity and distribution along the coast of Andhra Pradesh - First aid measures of Jellyfish stings