1,721,526 research outputs found
sj-pdf-1-pie-10.1177_09544089211064480 - Supplemental material for Non-axisymmetric Homann stagnation-point flow of unsteady Walter's B nanofluid over a vertical cylindrical disk
No full textSupplemental material, sj-pdf-1-pie-10.1177_09544089211064480 for Non-axisymmetric Homann
stagnation-point flow of unsteady
Walter's B nanofluid over a vertical cylindrical disk by Latif Ahmad, Saleem Javed, Muhammad Ijaz Khan, M. Riaz Khan, Essam Roshdy El-Zahar and Abd Allah A. Mousa in Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering</p
Characterizing sorghum genotypes for forage yield, hydrocyanic acid and sugar contents under arid climate conditions
No full textSorghum (Sorghum bicolor (L.) Moench) is a dual nature crop, which is used for food as well
as fodder, depending on plant ideotype. Sorghum forage is important for ruminants, but a
major constraint is the anti-nutritional factor dhurrin, a hydrocyanic acid (HCN) producing
glucoside. There are several additional effects of dhurrin, which reduce the nutritional value of
sorghum fodder for livestock. This two-year study was aimed to evaluate the variation among
diverse sorghum varieties, specifically for HCN content, forage yield and stem sugar content
(brix value) under arid climate in Pakistan. Nine sorghum varieties were used for this experiment:
JS-2002, Chakwal sorghum, Lines CS-17, Super late, PAK SS-2, Johar, JS-263,
Sargodha-2011 and YSS-98. Results reveal that Sargodha-2011 had superior morphological
traits for fresh forage and dry biomass yield, and stem brix value, compared to other varieties.
Higher HCN contents were recorded in Super late compared to other varieties. Significant
negative correlation of HCN with yield showed that improvement in yield will reduce the
HCN content of sorghum. In conclusion, sorghum variety SGD-11 was shown best performing
for higher biomass yield and brix value, and lower HCN content compared to other tested
varieties under arid climate of Thal, Pakistan
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Screening of potent phytochemical inhibitors against SARS-CoV-2 protease and its two Asian mutants
No full textBackground: COVID-19, declared a pandemic in March 2020 by the World Health Organization is caused by Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). The virus has already killed more than 2.3 million people worldwide. Object: The principal intent of this work was to investigate lead compounds by screening natural product library (NPASS) for possible treatment of COVID-19.Methods: Pharmacophore features were used to screen a large database to get a small dataset for structure-based virtual screening of natural product compounds. In the structure-based screening, molecular docking was performed to find a potent inhibitor molecule against the main protease (Mpro) of SARS-CoV-2 (PDB ID: 6Y7M). The predicted lead compound was further subjected to Molecular Dynamics (MD) simulation to check the stability of the leads compound with the evolution of time.Results: In pharmacophore-based virtual screening, 2,361 compounds were retained out of 30,927. In the structure-based screening, the lead compounds were filtered based on their docking scores. Among the 2,360 compounds, 12 lead compounds were selected based on their docking score. Kazinol T with NPASS ID: NPC474104 showed the highest docking score of -14.355 and passed criteria of Lipinski's drug-like parameters. Monitoring ADMET properties, Kazinol T showed its safety for consumption. Docking of Kazinol T with two Asian mutants (R60C and I152V) showed variations in binding and energy parameters. Normal mode analysis for ligand-bound and unbound form of protease along with its mutants, revealed displacement and correlation parameters for C-alpha atoms. MD simulation results showed that all ligand-protein complexes remained intact and stable in a dynamic environment with negative Gibbs free energy.Conclusions: The natural product Kazinol T was a predicted lead compound against the main protease of SARSCoV-2 and will be the possible treatment for COVID-19
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Growth, yield and quality attributes of guar (Cyamopsis tetragonoloba L.) genotypes grown under different planting dates in a semi-arid region of Pakistan
Full text linkGuar (Cyamopsis tetragonoloba L.) is grown in semi-arid regions worldwide as a forage, vegetable, and green manure crop. An experiment was conducted to evaluate growth, forage yield and nutritional quality of guar genotypes grown under different sowing dates. To this end, seven genotypes, viz., Desi Punjab, Farmi Punjab, Desi Sindh, Farmi Sindh, BR-90, BR-2017 and Baluchistan were grown at three sowing times (mid-May, late-May and early-June) during the two years 2020 and 2021. Results showed that maximum leaf area and pods per plant were recorded in genotype Farmi Punjab, while maximum fresh and dry forage yield were archived in genotype ‘BR-90’. Similarly, maximum crude protein in the forage and gum content in mature seeds, were also recorded in BR-90. In addition, mid-May was proved to be the best sowing time for guar genotypes studied in view of achieving maximum morphological traits, fresh and dry forage yield and forage quality, compared to later
planting times. Moreover, late sowing caused reduction in yield and other related attributes. It is perceived that synthetic guar variety BR-90 and planting time at mid-May are the best for semi-arid region of Punjab, Pakistan
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