150 research outputs found

    Stability of Domination in Graphs

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    The stability of dominating sets in Graphs is introduced and studied,in this paper. Here D is a dominating set of Graph G. In thispaper the vertices of D and vertices of VDV - D are called donorsand acceptors respectively. For a vertex u in D, let ψD(u)\psi_{D}(u) denotethe number N(u)(VD).Thedonorinstabilityorsimplydinstability\|N(u) \cap (V - D)\|. The donor instability or simply d-instability d^{D}_{inst}(e) ofanedgeeconnectingtwodonorverticesvanduis  of an edge e connecting two donor vertices v andu is \|\psi_{D}(u)-\psi_{D}(v)\|.ThedinstabilityofD,. The d-instability of D, \psi_{d}(D) is the sum ofd-instabilities of all edges connecting vertices in D. For a vertex unot in D, let ϕD(u)denotethenumber\phi_{D}(u) denote the number \|N(u)\cap D\|. The Acceptor Instabilityor simply a-instability  ainstD(e)a^{D}_{inst}(e)  of an edge e connecting twoacceptor vertices u and v is ϕD(u)ϕD(v)\|\phi_{D}(u)-\phi_{D}(v)\|. The a-instability of D,ϕa(D)\phi_{a}(D) is the sum of a-instabilities of all edges connecting vertices inVDV - D. The dominating set D is d-stable if ψd(D)=0\psi_{d}(D) = 0 and a-stableif ϕa(D)=0\phi_{a}(D) = 0. D is stable, if ψd(D)=0\psi_{d}(D) = 0 and ψa(D)=0\psi_{a}(D) = 0. Given anon negative integer #\alpha,Dis, D is \alpha-d-stable,if, if d^{D}_{inst}(e)\leq\alphaforanyedgeeconnectingtwodonorverticesandDis for any edgee connecting two donor vertices and D is \alpha-a-stable,if, if a^{D}_{inst}(e)\leq\alphaforanyedgeeconnectingtwoacceptorvertices.Herewestudyfor any edge e connecting two acceptor vertices. Here we study \alphastabilitynumberofgraphsfornonnegativeinteger-stability number of graphs for non negative integer \alpha$

    സമുദ്ര, സമുദ്രതീര ജീവികൾ

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    സമുദ്ര, സമുദ്രതീര ജീവിക

    Exploring the Impact of NF- KB1 Gene Polymorphism

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    This review article extensively explores the influence of NF-κB1 gene polymorphism on a diverse range of health issues. The NF-κB pathway, a crucial controller of immune response, is closely associated with numerous disease mechanisms. The NF-kB1 gene has undergone significant genetic changes, and these changes have shown strong connections with the onset and development of numerous disorders. This article investigates the intricate relationship between mutations in the NF-kB1 gene and a wide range of disorders through a thorough study of the literature. These conditions encompass inflammatory disorders, cancer, cardiovascular diseases (CVD), and various other medical ailments. The notable discoveries emphasized within this review underscore the essential role of NF-κB1 gene polymorphism in the development of a range of diseases. Furthermore, these discoveries have important ramifications that could help develop more specialized, successful treatment approaches. To sum up, this work sheds light on the different ways in which NF-kB1 gene variation influences the progression of disorders and highlights the urgent need for more research in this area

    Endocrine Autoimmunity in Association with Female Infertility

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    Infertility is the inability to conceive after a year of regular unprotected sexual intercourse, affecting 10-15% of couples. Advanced age, obesity, and certain medications can hinder fertility. Endocrine autoimmunity is increasingly recognized as a significant contributor to female infertility, often complicating various gynecological conditions. Autoimmune issues involving the hypothalamus, pituitary gland, thyroid, adrenal glands, and ovaries can impact fertility. A multidisciplinary approach is essential for diagnosing infertility, with a crucial focus on identifying potential endocrine disorders. Here we discuss how to identify endocrine autoimmune patients with ovulatory dysfunction. Women must be advised about limiting factors to be avoided, to protect their fertility. A comprehensive understanding of the underlying mechanisms, coupled with appropriate diagnostic and therapeutic approaches, is crucial for effectively managing this complex condition and helping women achieve their reproductive goals

    Beneficial impacts of biochar as a potential feed additive in animal husbandry

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    In the last decade, biochar production and use have grown in popularity. Biochar is comparable to charcoal and activated charcoal because it is a pyrogenic carbonaceous matter made by pyrolyzing organic carbon-rich materials. There is a lack of research into the effects of adding biochar to animal feed. Based on the reviewed literature, including its impact on the adsorption of toxins, blood biochemistry, feed conversion rate, digestion, meat quality, and greenhouse gas emissions, adding biochar to the diet of farm animals is a good idea. This study compiles the most important research on biochar's potential as a supplement to the diets of ruminants (including cows and goats), swine, poultry, and aquatic organisms like fish. Biochar supplementation improves animal growth, haematological profiles, meat, milk and egg yield, resistance to illnesses (especially gut pathogenic bacteria), and reduced ruminant methane emission. Biochar's strong sorption capacity also helps efficiently remove contaminants and poisons from the animals' bodies and the farm surroundings where they are raised. Animal farmers are predicted to make greater use of biochar in the future. Biochar could potentially be of value in the healthcare and human health fields; hence research into this area is encouraged. The present review highlights the potential benefits of biochar as an additive to animal feed and demonstrates how, when combined with other environmentally friendly practices, biochar feeding can extend the longevity of animal husbandry

    Coconut-growing soils of Kerala: 1. Characteristics and classification

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    Coconut plantations are the major land use systems in Kerala state. The tropical hot humid climate and soils of the state are considered suitable for the palm, with the exception of highlands occurring 600 m above MSL. However, the productivity of coconut is abysmally low in the state with an average productivity of around 40 nuts per year per palm. To find out whether the highly weathered and leached low activity clay soils developed in tropical hot humid climate is responsible for the low yield, an assessment of soil qualities in the coconut-growing soils of the state was made. Six distinct regions of coconut cultivation in the state were identified and delineated based on the variability of agro-climate and soils, viz., Central and Eastern Palakkad, Northern Kerala, Central Kerala, Southern Kerala, Onattukara sandy plains and coastal sandy plains. Soil profiles were studied at representative sites in each region. Investigated morphological features and sampled horizon-wise for the analysis of physical and chemical properties of the soil. Coconut-growing soils of Kerala state are in general deep and well drained, clayey or sandy having good structure permitting rapid transmission of water. The soils of Palakkad, Southern Kerala and Coastal Sandy Plains have near neutral reaction whereas the extensive areas of laterite soils of Northern and Central Kerala and sandy soils of Onattukara were strongly acid and had high levels of KCl extractable aluminium. The acid soils also analysed for low levels of basic cations, potassium, calcium and magnesium. Soils from all regions except Palakkad have low CEC. Surface and sub-soils base status were extremely low for soils of Northern and Central Kerala and Onattukara sandy plain. The soils of Central and Eastern Palakkad were classified as Typic Haplustalfs, Northern Kerala as Plinthic Humults, Central Kerala as Typic Plinthustults, Southern Kerala as Rhodic Kandiustults and the soils of sandy plains as Ustipsamments, according to soil taxonomy

    Sponge fauna of the Lakshadweep Islands of Indian Ocean

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    The present study deals with four new records of sponges found at Lakshadweep area and a checklist of sponges reported off. The new records are Agelas oroides, Callyspongia (Cladochalina) aculeata, Raspailia (Clathriodendron) arbuscula and Stylissa massa. Details about the species diversity of common sponges, massive sponges, boring sponges of the area are discussed and presented

    Biodiversity of sponges (Phylum: Porifera) off Tuticorin, India

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    The present study deals with 18 new records of sponges found at Kayalpatnam area and a checklist of sponges reported off Tuticorin in the Gulf of Mannar. The new records are Aiolochoria crassa, Axinella damicornis, Clathria (Clathria) prolifera, Clathrina sororcula, Clathrina sinusarabica, Clathrina coriacea, Cliona delitrix, Colospongia auris, Crella incrustans, Crambe crambe, Hyattella pertusa, Plakortis simplex, Petrosia (Petrosia) ficiformis, Phorbas plumosus, Spheciospongia vesparium, Spirastrella cunctatrix, Xestospongia muta and Sycon ciliatum. Details about the species diversity of common sponges, invasive sponges,massive sponges and boring sponges of the area are discussed and presented

    Human BCAS3 Expression in Embryonic Stem Cells and Vascular Precursors Suggests a Role in Human Embryogenesis and Tumor Angiogenesis

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    Cancer is often associated with multiple and progressive genetic alterations in genes that are important for normal development. BCAS3 (Breast Cancer Amplified Sequence 3) is a gene of unknown function on human chromosome 17q23, a region associated with breakpoints of several neoplasms. The normal expression pattern of BCAS3 has not been studied, though it is implicated in breast cancer progression. Rudhira, a murine WD40 domain protein that is 98% identical to BCAS3 is expressed in embryonic stem (ES) cells, erythropoiesis and angiogenesis. This suggests that BCAS3 expression also may not be restricted to mammary tissue and may have important roles in other normal as well as malignant tissues. We show that BCAS3 is also expressed in human ES cells and during their differentiation into blood vascular precursors. We find that BCAS3 is aberrantly expressed in malignant human brain lesions. In glioblastoma, hemangiopericytoma and brain abscess we note high levels of BCAS3 expression in tumor cells and some blood vessels. BCAS3 may be associated with multiple cancerous and rapidly proliferating cells and hence the expression, function and regulation of this gene merits further investigation. We suggest that BCAS3 is mis-expressed in brain tumors and could serve as a human ES cell and tumor marker
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