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The freshwater bivalve Lamellidens marginalis is native to Southeast Asia and one of the most widely used mussels for pearl production in the region. No studies have been carried out on stock chara...

The strength of many security protocols lies on the computational intractability of the integer factorization and discrete logarithm problems. Currently, the best-known techniques employed are number field sieve (NFS) family of algorithms. They come under the class of sub-exponential time algorithms. This class of algorithms comprises of multiple steps. The relation collection (sieving step) is one of the computationally costly and highly memory-dependent phase of these algorithms. This paper discusses various ways to improve the efficiency of the relation collection phase by using parallelization techniques. Experiments have been carried out by using function field sieve, which is one of the NFS family algorithms, to show the computation efficiency of parallelization techniques along with the suitable sieving techniques and the key parameters. The result of our basic implementation is compared with the parallelized version of it. The result analysis depicts that the relation collection phase can be improved by using parallelization techniques up to fourfold.

Freshwater mussels play a key role in ecology and are often considered as ecological indicators. Conversely, these molluscs are one of the most threatened groups due to several anthropogenic factors. Knowledge of phylogenetic diversity would assist in formulating effective management and conservation measures. Lamellidens marginalis is one of the most widely used freshwater mussel for pearl production in India. The genomic resources for investigating its evolutionary relationship within the Unionidae family are lacking.In this study, the f-type mitochondrial genome of L. marginalis was sequenced using the Illumina sequencing platform. The length of the mitochondrial genome was 15,732 bp consisting of 23 tRNAs, 2 rRNAs and 13 protein coding genes. The arrangement of genes was UF1 type and gene overlap was observed between trnG and nad1. Comparative analysis with other Unionidae species showed a high divergence rate in nad6 followed by nad2 atp8 and nad5. The phylogenetic tree supported monophyly of the Unioninae subfamily and L. marginalis (Parreysiinae) formed a sister branch to this subfamily. The divergence time of the Parreysiinae from its most recent common ancestor (MRCA) was placed in the Mesozoic era.This information will be useful for the understanding the evolutionary pattern of the species of Parreysiinae subfamily.

Anthropogenic releases of plastics, persistent organic pollutants (POPs), and heavy metals can impact the environment, including aquatic ecosystems. Nanoplastics (NPs) have recently emerged as pervasive environmental pollutants that have the ability to adsorb POPs and can cause stress in organisms. Among POPs, DDT and its metabolites are ubiquitous environmental pollutants due to their long persistence. Despite the discontinued use of DDT in Europe, DDT and its metabolites (primarily p,p′-DDE) are still found at detectable levels in fish feed used in salmon aquaculture. Our study aimed to look at the individual and combined toxicity of NPs (50 mg/L polystyrene) and DDE (100 μg/L) using zebrafish larvae as a model. We found no significant morphological, cardiac, respiratory, or behavioural changes in zebrafish larvae exposed to NPs alone. Conversely, morphological, cardiac and respiratory alterations were observed in zebrafish larvae exposed to DDE and NPs + DDE. Interestingly, behavioural changes were only observed in zebrafish larvae exposed to NPs + DDE. These findings were supported by RNA-seq results, which showed that some cardiac, vascular, and immunogenic pathways were downregulated only in zebrafish larvae exposed to NPs + DDE. In summary, we found an enhanced toxicological impact of DDE when combined with NPs. publishedVersion

N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylenediamine (6PPD) is the most widely used antioxidant in automobile tyres and many rubber products. We investigated the impact of 6PPD and 6PPD quinone on acute toxicity, morphology, swimming behaviour, heart rate, and oxygen consumption in zebrafish larvae. Zebrafish embryos were exposed to 6PPD and 6PPD quinone at concentrations of 1, 10, and 25 µg/L during the development period of 1–96 hpf. In the present study, 6PPD quinone was found to be toxic to zebrafish larvae with a 24 h LC50 of 308.67 µg/L. No significant mortality was observed at any of the tested concentrations. A dose-dependent reduction in swimming performance was observed in the exposed larvae at 116 hpf for both toxicants. Overall, our study shows that exposure of zebrafish embryos to 6PPD and 6PPD quinone at environmentally relevant concentrations (1 µg/L) does not affect its behaviour. However, exposure to higher but still sublethal concentrations of 6PPD and 6PPD quinone (10 and 25 µg/L) can affect behavioural endpoints. These findings reveal the toxicity of 6PPD and 6PPD quinone to early life stages of fish.

The main aim of this research is to find out the status of municipal solid waste generation and its composition along with the relationship of economic condition of different inhabitants with per capita of waste composition in Varanasi, the most crowded city in the state of Uttar Pradesh, India. Municipal Solid waste MSW is a heterogeneous in composition and varied from place to place. Increasing population levels as well as rapid economic growth and rise in living standard of people speeded the generation rate of municipal solid waste in metropolitan cities of India. The objective of this paper is to providing an insight of the stages of waste management i.e. Prevention, Minimization, Recycle, Reuse, Energy recovery, Disposal and its composition and amount in order to improve the current solid waste management practice of Varanasi municipality and also to provides a further insight of feasibility and aids of adopting segregation at source and decentralization of solid waste management in order to provide better future. Research data is gathered from preliminary field investigation, questionnaire survey and face to face interview which show that with population of around 11,98,491 1 waste generated is 593TPD which comprises of food waste 29.6 , followed by plastic 18 , paper and cardboard 12.8 , textile 8.5 , rubber and leather 5.7 , bulk waste 9.6 metal 2.8 other 5.7 . Since about 15 nearly 80 ton of compost is produced from an average of 500 600 metric ton which is sold at Rs.1,000 per ton if decentralization and segregation of waste at its generation point is done effectively it would be sold at Rs.415 per ton result in better standard of living society . out of 593 TPD waste only nearly 350 TPD which would lead to dispose much less amount then current scenario as a result reduction in GHGs emission and lead to creation of safe environment. Thus on the basis of above research we can conclude that solid waste management and recycling a major issue of Varanasi district and with proper segregation and decentralization of solid waste we can reuse and recycle various kind of waste depending upon nature of waste. As a result less amount of waste need to be disposed which further lead to reduction of greenhouse gas emission and thus would help to lower down carbon footprint. Shubham Varshney | Dr. Bharat Nagar "Municipal Solid Waste and its Management (A Study on Varanasi City)" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-4 , June 2018, URL: https://www.ijtsrd.com/papers/ijtsrd14494.pdf

We propose an efficient solution for finding a collision-free path in a Three-Dimensional environment with dynamic obstacles for Unmanned Aerial Vehicles (UAVs). Path Planning for Unmanned Aerial Vehicles (UAVs) in Three Dimensional Dynamic Environment is considered a challenging task in the field of robotics. During their mission, UAVs have to maneuver in an environment which can have obstacles of varying size and random motion. The aim of the proposed algorithm is to traverse an optimal flight route in real world environment with no collision with environmental elements. This paper proposes use of a Glow-worm Swarm Optimization (GSO) for Path-Planning of Unmanned Aerial Vehicles (UAVs). It provides improved convergence rate and accuracy than the other Meta Heuristic optimization algorithms. The simulation is modelled in a real world environment. A swarm of particles is made to co-ordinate with each other for optimal path planning. The simulation is run in Python and the viability of the algorithm according to path-cost, time and number of expanded nodes is measured.

Fibroadenoma, being a very common benign tumor of the breast in young females, does not pose any threat and, thus, can be treated with lumpectomy. Breast cancer arising within a fibroadenoma is a rare phenomenon, but detecting these neoplasms is of utmost importance for complete treatment and follow-up. These lesions are an incidental finding in a lumpectomy specimen done for fibroadenoma breast. A 28-year-old female presented with multiple bilateral lumps for eight years. The lumps were mobile, non-tender, and slowly growing, with no nipple discharge, no axillary lymphadenopathy, and no family history. The diagnosis of a benign lesion suggestive of fibroadenoma was given on ultrasonography (USG) and fine-needle aspiration cytology (FNAC). The patient underwent lumpectomy and the excised tissues were subjected to histopathological examination. Grossly, multiple, well-circumscribed, encapsulated masses, with the largest measuring 4x2.5x2 cm were noted. All masses showed homogenous grey-white areas with slit-like spaces. On microscopy, predominant areas were consistent with fibroadenoma, with few foci showing the features of ductal carcinoma in situ (DCIS) with nests of cells having pleomorphic nuclei, prominent nucleoli with atypical mitosis, a cribriform pattern, and comedo necrosis. This highlights the rare association of fibroadenoma and carcinoma in situ, thus, a careful and extensive sampling of the tissue is required to prevent the false negative diagnosis by pathologists.