1,720,969 research outputs found
DLPC@ 323K, CHARMM36UA force field
No full text<p>Files required for a simulation of a DLPC bilayer in LAMMPS (<strong>lammps</strong>.sandia.gov/). Force field is taken from http://pubs.acs.org/doi/abs/10.1021/jp410344g</p>
<p>This data is used in the project "Matching lipid force fields with NMR data", see: http://nmrlipids.blogspot.fi </p>The following lines should be added into in.lmp file instead of "neigh_modify delay 0 every 1 check yes":
kspace_style pppm 1.0e-4
neighbor 2.0 bin
neigh_modify delay
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Performance of 16S rRNA Gene Next-Generation Sequencing and the Culture Method in the Detection of Bacteria in Clinical Specimens
Get PDFEffective treatment of infectious diseases requires prompt and accurate bacterial identification and tailored antimicrobial treatments. Traditional culture methods are considered the gold standard, but their effectiveness diminishes for fastidious and hard-to-grow microorganisms. In recent years, molecular diagnostic tools such as 16S rRNA gene next-generation sequencing (16S NGS) have gained popularity in the field. We analysed data from samples submitted for 16S NGS between July 2022 and July 2023 at the Department of Advanced Translational Microbiology in Trieste, Italy. The study included samples submitted for both culture-based identification and 16S NGS. Conventional media were used for culture, and bacterial identification was performed using MALDI-TOF mass spectrometry. The V3 region of the 16S rRNA gene was sequenced using the Ion PGM platform. Among the 123 samples submitted, drainage fluids (38%) and blood (23%) were the most common, with requests predominantly from the Infectious Diseases (31.7%) and Orthopedic (21.13%) Units. In samples collected from patients with confirmed infections, 16S NGS demonstrated diagnostic utility in over 60% of cases, either by confirming culture results in 21% or providing enhanced detection in 40% of instances. Among the 71 patients who had received antibiotic therapies before sampling (mean 2.3 prior antibiotic days), pre-sampling antibiotic consumption did not significantly affect the sensitivity of 16S NGS. In routine microbiology laboratories, combining 16S NGS with culture method enhances the sensitivity of microbiological diagnostics, even when sampling is conducted during antibiotic therapy
Variations on the Author
Get PDF“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
Get PDFWe 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
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe 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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
A Comparative Analysis of Rheometer and Pipe Rig Methods for Rheological Characterization of Microfibrillated Cellulose Suspensions as a Model Fluid for Wastewater Sludge
No full textIn the pursuit of optimizing material handling processes, gaining a thorough understanding of material behavior and its underlying properties is crucial. Among these properties, the apparent viscosity holds a pivotal role in estimating the energy required for efficient transportation within a processing plant. This thesis aims to assess the viability of using a laboratory rheometer to analyze the flow behavior of sewage sludge in pipes. The utilization of Exilva, a microfibrillated cellulose, as a model fluid for wastewater sludge, is suggested to facilitate a more convenient and consistent exploration of flow properties.
This project further focuses on establishing a reliable and reproducible technique for obtaining rheological data using a laboratory rheometer. Initially, experiments were conducted on Newtonian fluids to develop and verify the method, which was subsequently adjusted to accommodate non-Newtonian fluids. The method involves determining the effective dimensions of vane geometries and employing non-Newtonian correction factors to calculate shear rate and shear stress across the vane-to-container gap. The resulting flow data were fitted numerically to the Herschel-Bulkley non-Newtonian rheology model. Consistent rheometer results were obtained for concentrations up to 2.44%, while higher concentrations exhibited highly complex behavior.
To capture realistic flow behavior, a pipe testing rig was constructed to gather data on Exilva suspensions in pipes. These data were then fitted numerically to the Herschel-Bulkley model to estimate flow parameters. To assess the feasibility of using a laboratory-scale rheometer for estimating fluid flow in pipes, a comparison was made between the rheometer and pipe rig methods. For lower-concentration materials, both rheometer apparent viscosity and pipe rig measurements yielded similar outcomes when applying the Herschel-Bulkley model. However, notable discrepancies arose when dealing with higher-concentration materials, indicating challenges in accurately characterizing their rheological properties.I jakten på å optimalisere materialhåndteringsprosesser er det avgjørende å få en grundig forståelse av materialers underliggende egenskaper. Blant disse egenskapene spiller viskositeten en sentral rolle i å estimere energien som kreves for effektiv transport i et prosessanlegg. Denne oppgaven tar sikte på å vurdere muligheten til å bruke et laboratoriereometer for å analysere strømningsatferden til kloakkslam i rør. Bruken av Exilva, en mikrofibrillert cellulose, som et modellfluid for avløpsslam, foreslås for å muliggjøre en mer praktisk og konsistent utforskning av strømningsegenskapene.
Dette prosjektet fokuserer på å etablere en pålitelig og reproduserbar metode for innhenting av reologiske data ved bruk av et laboratoriereometer. Først ble det utført eksperimenter på newtonske væsker for å utvikle og verifisere metoden, som deretter ble justert for å imøtekomme ikke-newtonske væsker. Metoden innebærer å bestemme de effektive dimensjonene til vane-geometrier og bruke ikke-newtonske korreksjonsfaktorer for å beregne skjærhastighet og skjærspenning over mellomrummet mellom vane-geometrien og beholderen. De resulterende strømningsdata ble numerisk tilpasset til en Herschel-Bulkley ikke-newtonsk reologimodell. Konsistente resultater fra reometeret ble oppnådd for konsentrasjoner opp til 2,44%, mens høyere konsentrasjoner viste svært kompleks oppførsel.
For å undersøke realistisk strømningsatferd, ble det konstruert en rør-rigg for å samle data om strømning av Exilva i rør. Disse dataene ble deretter numerisk tilpasset til HerschelBulkley-modellen for å estimere strømningsparametere. For å vurdere muligheten til å bruke et laboratorieskala-reometer til å estimere væskestrøm i rør, ble det foretatt en sammenligning mellom reometer- og rørriggmetoden. For materialer med lavere konsentrasjon ga både reometermålinger og rørriggmålinger lignende resultater ved bruk av Herschel-Bulkley-modellen. Imidlertid oppsto det bemerkelsesverdige avvik når det gjelder materialer med høyere konsentrasjon, noe som indikerer utfordringer med å nøyaktig karakterisere deres reologiske egenskaper
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