491 research outputs found

    Characterisation and Response to Beneficiation of Ferruginous Chromite Ores

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    Sukinda-Nausahi belt of Orissa, represent about 90% of the Indian Chromite ore reserves. These ores are later-itic type in nature resulted by weathering of ultrabasic rocks, Metallurgical industries consume maximum chromite ores- around 50% followed by refractory and chemical indu-stries which consume about 35% and 15% respectively. The utility pattern of chromite in industries is varying greatly. The variation in the demand could be due to lim-ited market for medium and low grade chromite. Hence it is necessary to improve the chromium content for better util-isation and conservation of available resources

    A Collaborative Ambient Picture Selection System Based on Layered Attention

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    One of the most immediately noticeable advantages of one-on-one communication as of late is the creation of picture-based, easygoing affiliations. Those daily monster photo swaps learning about customers' tastes in user-generated images and influencing recommendations has developed into a pressing need. It's true that several mixed models have been offered to combine client thing documented lead with various types of ancillary data (like image visual delineation or social connection) to better execute suggestions. Despite this, the past evaluations fail to capture the amazing views that influence clients' propensities in a bound together structure due to the remarkable characteristics of the client-conveyed images in social picture composes. Furthermore, the vast majority of these hybrid models relied on predetermined stacks to combine different types of data, which, according to the guidelines, admitted faulty proposal execution. In this study, we do just that by constructing a robust model of ideas for putting out socially critical pictures. We see three key focuses (i.e., move history, social impact, and proprietor venerate) that effect every client's dormant preferences, where each perspective outlines a canny factor from the eccentric relationship between customers and pictures, despite the fact that essential apathetic client enthusiasm appears in the standard framework factorization based proposition

    Sourcing complexity factors on contractual relationship: Chinese suppliers’ perspective

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    To reduce cost and gain competitive advantage, original equipment manufacturers (OEMs) around the world have continued their aggressive sourcing from China. However, sourcing in China has never been a straightforward process and OEMs face both tangible and intangible sourcing complexities with significant negative impact on both expected positive benefits and their contractual relationships with the Chinese suppliers. We developed sourcing complexity model using comprehensive literature review and multiple case studies in various industries to understand the suppliers’ views on sourcing complexity in China. We employed Analytic hierarchy process technique to prioritise identified complexity factors and to derive managerial insights. Our results indicate that tangible complexity factors highly influence the Chinese suppliers’ contractual relationship with OEM’s. Number of suppliers available to OEM’s to procure a component is identified as a primary dominating tangible factor, while differentiation in technical capabilities and operational practices between OEMs and suppliers represents the second biggest issue for Chinese suppliers in establishing contractual relationship with OEM’s

    PTPRF is disrupted in a patient with syndromic amastia

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    <p>Abstract</p> <p>Background</p> <p>The presence of mammary glands distinguishes mammals from other organisms. Despite significant advances in defining the signaling pathways responsible for mammary gland development in mice, our understanding of human mammary gland development remains rudimentary. Here, we identified a woman with bilateral amastia, ectodermal dysplasia and unilateral renal agenesis. She was found to have a chromosomal balanced translocation, 46,XX,t(1;20)(p34.1;q13.13). In addition to characterization of her clinical and cytogenetic features, we successfully identified the interrupted gene and studied its consequences.</p> <p>Methods</p> <p>Characterization of the breakpoints was performed by molecular cytogenetic techniques. The interrupted gene was further analyzed using quantitative real-time PCR and western blotting. Mutation analysis and high-density SNP array were carried out in order to find a pathogenic mutation. Allele segregations were obtained by haplotype analysis.</p> <p>Results</p> <p>We enabled to identify its breakpoint on chromosome 1 interrupting the <it>protein tyrosine receptor type F gene </it>(<it>PTPRF</it>). While the patient's mother and sisters also harbored the translocated chromosome, their non-translocated chromosomes 1 were different from that of the patient. Although a definite pathogenic mutation on the paternal allele could not be identified, <it>PTPRF</it>'s RNA and protein of the patient were significantly less than those of her unaffected family members.</p> <p>Conclusions</p> <p>Although <it>ptprf </it>has been shown to involve in murine mammary gland development, no evidence has incorporated <it>PTPRF </it>in human organ development. We, for the first time, demonstrated the possible association of <it>PTPRF </it>with syndromic amastia, making it a prime candidate to investigate for its spatial and temporal roles in human breast development.</p

    Detecting intratumoral heterogeneity of EGFR activity by liposome-based in vivo transfection of a fluorescent biosensor

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    Despite decades of research in the epidermal growth factor receptor (EGFR) signalling field, and many targeted anti-cancer drugs that have been tested clinically, the success rate for these agents in the clinic is low, particularly in terms of the improvement of overall survival. Intratumoral heterogeneity is proposed as a major mechanism underlying treatment failure of these molecule-targeted agents. Here we highlight the application of fluorescence lifetime microscopy (FLIM)-based biosensing to demonstrate intratumoral heterogeneity of EGFR activity. For sensing EGFR activity in cells, we used a genetically encoded CrkII-based biosensor which undergoes conformational changes upon tyrosine-221 phosphorylation by EGFR. We transfected this biosensor into EGFR-positive tumour cells using targeted lipopolyplexes bearing EGFR-binding peptides at their surfaces. In a murine model of basal-like breast cancer, we demonstrated a significant degree of intratumoral heterogeneity in EGFR activity, as well as the pharmacodynamic effect of a radionuclide-labeled EGFR inhibitor in situ. Furthermore, a significant correlation between high EGFR activity in tumour cells and macrophage-tumour cell proximity was found to in part account for the intratumoral heterogeneity in EGFR activity observed. The same effect of macrophage infiltrate on EGFR activation was also seen in a colorectal cancer xenograft. In contrast, a non-small cell lung cancer xenograft expressing a constitutively active EGFR conformational mutant exhibited macrophage proximity-independent EGFR activity. Our study validates the use of this methodology to monitor therapeutic response in terms of EGFR activity. In addition, we found iNOS gene induction in macrophages that are cultured in tumour cell-conditioned media as well as an iNOS activity-dependent increase in EGFR activity in tumour cells. These findings point towards an immune microenvironment-mediated regulation that gives rise to the observed intratumoral heterogeneity of EGFR signalling activity in tumour cells in vivo

    Tests of light-lepton universality in angular asymmetries of B0DνB^0 \to D^{*-} \ell \nu decays

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    We present the first comprehensive tests of light-lepton universality in the angular distributions of semileptonic \Bz-meson decays to charged spin-1 charmed mesons. We measure five angular-asymmetry observables as functions of the decay recoil that are sensitive to lepton-universality-violating contributions. We use events where one neutral \B is fully reconstructed in \PUpsilonFourS{} \to\B\overline{B} decays in data corresponding to \lumion integrated luminosity from electron-positron collisions collected with the \belletwo detector. We find no significant deviation from the standard model expectations

    Search for an invisible ZZ^\prime in a final state with two muons and missing energy at Belle II

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    The LμLτL_{\mu}-L_{\tau} extension of the standard model predicts the existence of a lepton-flavor-universality-violating ZZ^{\prime} boson that couples only to the heavier lepton families. We search for such a ZZ^\prime through its invisible decay in the process e+eμ+μZe^+ e^- \to \mu^+ \mu^- Z^{\prime}. We use a sample of electron-positron collisions at a center-of-mass energy of 10.58GeV collected by the Belle II experiment in 2019-2020, corresponding to an integrated luminosity of 79.7fb1^{-1}. We find no excess over the expected standard-model background. We set 90%\%-confidence-level upper limits on the cross section for this process as well as on the coupling of the model, which ranges from 3×1033 \times 10^{-3} at low ZZ^{\prime} masses to 1 at ZZ^{\prime} masses of 8GeV/c2GeV/c^{2}

    Measurement of C ⁣PC\!P asymmetries and branching-fraction ratios for B±DK±B^\pm \to DK^\pm and Dπ±D\pi^\pm with DKS0K±πD\to K^0_{\rm S} K^\pm\pi^\mp using Belle and Belle II data

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    We measure C ⁣PC\!P asymmetries and branching-fraction ratios for B±DK±B^\pm \to DK^\pm and Dπ±D\pi^\pm decays with DKS0K±πD\to K^0_{\rm S} K^\pm\pi^\mp, where DD is a superposition of D0D^0 and Dˉ0\bar{D}^0. We use the full data set of the Belle experiment, containing 772×106 BBˉ772\times 10^6~B\bar{B} pairs, and data from the Belle~II experiment, containing 387×106 BBˉ387\times 10^6~B\bar{B} pairs, both collected in electron-positron collisions at the Υ(4S)\Upsilon(4S) resonance. Our results provide model-independent information on the unitarity triangle angle ϕ3\phi_3.Comment: 26 pages, 8 figure

    The impact of changes in stakeholder salience on CSR activities in Russian energy firms: a contribution to the divergence / convergence debate

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    This empirical paper examines the drivers underpinning changes to socially-responsible behaviours in the Russian energy sector. Responding to recent requests to contextualise CSR research, we focus on the changing set of stakeholders and developments in their saliency as reflected in corporations’ CSR activities. Based on interviews with more than thirty industry professionals, our findings suggest that Russian energy companies’ CSR is strongly stakeholder driven, and organisations adapt their activities according to their dependence on the resources that these salient stakeholders possess. We challenge the proposition that CSR in Russia arises from purely endogenous, historical, paternalism or neo-paternalism. We identify stakeholders that now shape CSR in the Russian energy sector, both endogenous (institutional and contextual forces relevant to the national business system) and exogenous (relating to the organisational field of the energy industry - international by nature). We thereby contribute to the convergence / divergence debate within CSR theory by demonstrating that both national business systems and the organisational field must be taken into account when analysing the forces that shape CSR strategies in any one country

    Measurement of the branching fraction and CP\it CP asymmetry of B0π0π0B^{0} \rightarrow \pi^{0} \pi^{0} decays using 198×106198 \times 10^6 BBB\overline{B} pairs in Belle II data

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    We report measurements of the branching fraction and CP\it CP asymmetry in B0π0π0B^{0} \to \pi^{0} \pi^{0} decays reconstructed at Belle II in an electron-positron collision sample containing 198×106198 \times 10^{6} BBB\overline{B} pairs. We measure a branching fraction \mathcal{B}(\Bpipi) = (1.38 \pm 0.27 \pm 0.22) \times 10^{-6} and a CP\it CP asymmetry \Acp(\Bpipi) = 0.14 \pm 0.46 \pm 0.07, where the first uncertainty is statistical and the second is systematic
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