426 research outputs found

    Bird Strike to Aircrafts An Assessment of Changing Bird Populations at Select Indian Airfields

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    Bird Strikes (BS) are a significant threat to flight safety and a serious economic concern in the aviation industry. Variation of population and activity of different birds over an airfield leads to variation in their vulnerability for Bird Strike as well. In this study, an attempt was made to document the monthly variation of bird activity over three Indian airfields situated in different bio-geographical provinces in the year 2019-20. A significant activity of Black Kites (including the sub-species Black-eared Kite namely Milvus migrans govinda and Milvus migrans lineatus) and Lapwing (Vanellus indicus) were studied to understand their annual cycle as well as long term changes in their activity over airfields (over 30 years). Agra recorded an increase of 10.3 times in the activity of Black Kites in forty years. Black Kite data in correlation with the past information on Vultures indicate that the Black Kites are taking over the ecological niche of Vultures. Sirsa recorded an increase of 15 times in the activity of Red-wattled Lapwings in ten years and started dwindling again. The numbers of both species were stable over the Jodhpur airfield. The probable causes for long-term changes in Black Kite activity were identified as the type of waste management of the cities nearby, presence of other birds and migration. Similarly, changes in the activity of Red-wattled Lapwing could be partly attributed to the type of vegetation cover, long-term ecological changes, and intensive harassment of the bird. These findings will help airfield safety managers to initiate Solid Waste Management projects in the nearby city and monitor the bird population to control the major variations

    Implicit self-consistent electrolyte model in plane-wave density-functional theory

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    The ab-initio computational treatment of electrochemical systems requires an appropriate treatment of the solid/liquid interfaces. A fully quantum mechanical treatment of the interface is computationally demanding due to the large number of degrees of freedom involved. In this work, we describe a computationally efficient model where the electrode part of the interface is described at the density-functional theory (DFT) level, and the electrolyte part is represented through an implicit solvation model based on the Poisson-Boltzmann equation. We describe the implementation of the linearized Poisson-Boltzmann equation into the Vienna Ab-initio Simulation Package (VASP), a widely used DFT code, followed by validation and benchmarking of the method. To demonstrate the utility of the implicit electrolyte model, we apply it to study the surface energy of Cu crystal facets in an aqueous electrolyte as a function of applied electric potential. We show that the applied potential enables the control of the shape of nanocrystals from an octahedral to a truncated octahedral morphology with increasing potential

    Effect Of Online Education On Elementary Education In India

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    The mishaps happening in online education can cost a lot to the students who are getting educated by it in many ways. Elementary students particularly suffer immensely in terms of health, safety due to the online mode of education. The education system for young kids is viewed as a sacred stage since it helps in imparting basic knowledge to a human being. Yet, there are many Initiatives to help the problem, but it is still not enough. The objective of this study is to find whether online education is fruitful for the elementary school, and to deduce how many hours is advisable for elementary class, also to find how much health is getting affected, likely also to see if gadgets is advised to provide to the elementary students, lastly to ascertain which mode of education is most preferable for elementary education. Unlike in the case of doctrinal research where the research is conducted on the basis of facts and data already collected in the library, archives and other databases, collecting or gathering information by a first-hand study into the universe, it helps the empirical research to be carried on. There are a total of 1005 samples collected with regard to this study. Hence, through these figures, we are able to understand that there is not much reception regarding online education for elementary students among the general public but truly they are at a confused level about which mode is truthfully the good one for elementary school students

    Wildlife Collisions to Aircraft in India

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    Wildlife strikes (mainly birds, but also includes bats and other mammals on the ground) with aircraft isa serious economic and safety concern in the aviation industry. The solution to the problem can be evolved byidentifying the species involved in the incidents/ accidents. In the Indian context, such an attempt was started in1980. In the recent past, the Indian Air Force adopted the DNA Bar-coding technology to identify the species involved. The extent of the problems faced by the country and involvement of different species in various time blocks has been compared with the objective of analyzing changes over different periods to gauge the changes and assess the future requirements. The data indicates that over the years, the number of strikes has increased manifold in the civil aviation sector. The number of species involved in strikes has almost doubled. The serious strikes due to Vultures have nearly disappeared and their place has been mainly taken over by Black Kites. In the recent past, Black Kites are the cause of the highest damages and also have the highest probability of causing damages (61.17%) when struck. Adoption of DNA Barcoding technology has helped to identify the species in incidents where minimal bird remnants were found. Although the number of accidents has decreased, the economical losses continue to rise due to the high cost of modern aircraft

    Gandhahastadi Agada: A Review

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    Agada Tantra is a branch of Ayurveda that deals with the science of toxicology. It deals with the treatment of various poisons. For the management of poisons various treatment procedures have been described, one among them is the use of formulations taken internally. Varied formulations are described of just herbal, animal origin drugs and also herbo- mineral in origin. One among them is Gandhahastadi agada that is mentioned in the treatment of visha. It is a formulation of nineteen drugs and the bhavana dravya is of animal origin drugs namely Ajamutra (Goat’s urine), Go pitta (cow’s bile) and Ashwa pitta (horse’s bile) alternatively for seven days. This is indicated in various conditions such as Visuchika, Pilla, Arbuda, Arma, Kandu, Kshaya (consumption), Dourbhalya (asthenia), Madatyaya (alcoholism), Pandu (anaemia), Moha (unconsciousness), etc. and also as nasya in  sarvajwara (all types of fever). Keywords: Gandhahastadi Agada, visha, formulatio

    Bis(acetyl­acetonato-κ2 O,O′)(pyridine-κN)zinc(II)

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    In the title compound, [Zn(C5H7O2)2(C5H5N)], the metal atom has square-pyramidal coordination geometry with the basal plane defined by the four O atoms of the chelating acetyl­acetonate ligands and with the axial position occupied by the pyridine N atom. The crystal packing is characterized by a C—H⋯O hydrogen-bonded ribbon structure approximately parallel to [10]

    Determinants of Breastfeeding Practices and Its Association With Infant Anthropometry: Results From a Prospective Cohort Study in South India.

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    Introduction: Despite national efforts for promoting exclusive breastfeeding (EBF) during the first 6 months of the infants' life, breastfeeding rates are low in India. Evidence on the interference of supplementary food on optimal nourishment and growth of the infant has also been well-established. Our study was undertaken to assess the effect of breastfeeding practices on infant anthropometry and determine the various factors affecting breastfeeding practices. Methods: A prospective cohort study - Maternal antecedents of adiposity and studying the transgenerational role of hyperglycemia and insulin (MAASTHI) was conducted at a tertiary care public hospital in Bengaluru, South India. From the consenting women, data such as obstetric history, infant feeding practices, anthropometry of mother and child, the psychosocial status of the women using the Edinburgh Postnatal Depression Scale (EPDS), was collected at baseline and subsequent follow-up: post-delivery and 14 weeks after birth. In this study, we analyzed data collected from April 2016 to April 2018, with descriptive statistics presented in mean and standard deviation, and logistic regression adjusting for confounders. Results: Among the 240 women enrolled in the study, 33% (n= 80) were using supplementary food for their infants at 14 weeks of infants age. Infants who received supplementary feeding at age 14 weeks had nearly 2.5 times higher odds of being wasted (OR: 2.449, p-value: 0.002) as compared to exclusively breastfed infants. Conclusion: Infants between 14 to 16 weeks of age who received supplementary feeding were at risk of wasting as compared to exclusively breastfed infants. Despite strong evidence in support of the benefits of exclusive breastfeeding, awareness in urban women in India is low. Increased focus on promoting exclusive breastfeeding is necessary to ensure proper nutritional intake and healthy growth of infants

    IMPACT OF BIG DATA AND EMERGING RESEARCH TRENDS

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    The term big data is extensively used in many computational and decision making domains. Big data is nothing but the large data sets formed from various sources and are almost impossible to process and analyse using traditional approaches because of its complexity. Efficient analysis and processing of big data within a given time frame is essential for it to be useful. Various technologies like Hadoop, MapReduce, etc. are used to analyse the big data and hence possible to retrieve knowledge from the large datasets. This paper focuses on the impact of big data, the technologies in big data processing and its limitations and the emerging trends in big data

    A High-Quality Assembly of the Nine-Spined Stickleback (Pungitius pungitius) Genome

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    The Gasterosteidae fish family hosts several species that are important models for eco-evolutionary, genetic, and genomic research. In particular, a wealth of genetic and genomic data has been generated for the three-spined stickleback (Gasterosteus aculeatus), the "ecology's supermodel," whereas the genomic resources for the nine-spined stickleback (Pungitius pungitius) have remained relatively scarce. Here, we report a high-quality chromosome-level genome assembly of P. pungitius consisting of 5,303 contigs (N50 = 1.2Mbp) with a total size of 521 Mbp. These contigs were mapped to 21 linkage groups using a high-density linkage map, yielding a final assembly with 98.5% BUSCO completeness. A total of 25,062 protein-coding genes were annotated, and about 23% of the assembly was found to consist of repetitive elements. A comprehensive analysis of repetitive elements uncovered centromere-specific tandem repeats and provided insights into the evolution of retrotransposons. A multigene phylogenetic analysis inferred a divergence time of about 26 million years ago (Ma) between nine- and three-spined sticklebacks, which is far older than the commonly assumed estimate of 13 Ma. Compared with the three-spined stickleback, we identified an additional duplication of several genes in the hemoglobin cluster. Sequencing data from populations adapted to different environments indicated potential copy number variations in hemoglobin genes. Furthermore, genome-wide synteny comparisons between three- and nine-spined sticklebacks identified chromosomal rearrangements underlying the karyotypic differences between the two species. The high-quality chromosome-scale assembly of the nine-spined stickleback genome obtained with long-read sequencing technology provides a crucial resource for comparative and population genomic investigations of stickleback fishes and teleosts.Peer reviewe
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