1,724,146 research outputs found
Enhanced Phenazine-1-Carboxamide Production in Pseudomonas chlororaphis H5△fleQ△relA through Fermentation Optimization
No full textPhenazine-1-carboxamide (PCN) is effective to control many plant pathogens, and improving PCN production would be of great significance in promoting its development as a biopesticide. This study was conducted to improve the PCN production of Pseudomonas chlororaphis H5△fleQ△relA through fermentation optimization in both shake flask and bioreactor. The PCN production of H5△fleQ△relA was improved from 2.75 ± 0.23 g/L to 5.51 ± 0.17 g/L by medium optimization in shake flask using Plackett-Burman design, the path of steepest ascent experiment and central composite design. Then, PCN production reached 8.58 ± 0.25 g/L through optimizing pH in 1 L bioreactor. After pH optimization, the transcriptional levels of ccoO_2 and ccoQ_2 genes related to microbial aerobic respiration were significantly upregulated, and the relative abundance of 3-oxo-C14-HSL was significantly enhanced 15-fold, and these changes were vital for cell activity and metabolites production. Furthermore, the PCN production reached 9.58 ± 0.57 g/L after optimization of the fed-batch fermentation strategy in 1 L bioreactor. Finally, the fermentation scale-up of the optimal medium and optimal feeding strategy were conducted in 30 L bioreactor at the optimal pH, and their PCN production reached 9.17 g/L and 9.62 g/L respectively, which were comparable to that in 1 L bioreactor. In this study, the high PCN production was achieved from the shake-flask fermentation to 30 L bioreactor, and the optimal feeding strategy improved PCN production in bioreactor without increasing total glycerol compared with in shake flask. It provides promising pathways for the optimization of processes for the production of other phenazines
Linked collectors and determiners for: Colección Ictiológica del Museo de Historia Natural de la Universidad de la Amazonia (UAM-P).
No full textNatural history specimen data linked to collectors and determiners held within, "Colección Ictiológica del Museo de Historia Natural de la Universidad de la Amazonia (UAM-P)". Claims or attributions were made on Bionomia by volunteer Scribes, <a href="http://bionomia.net/dataset/278b1d5c-d7a9-4f7a-9651-69cddbb5b94e">https://bionomia.net/dataset/278b1d5c-d7a9-4f7a-9651-69cddbb5b94e</a> using specimen data from the dataset aggregated by the Global Biodiversity Information Facility, <a href="https://gbif.org/dataset/278b1d5c-d7a9-4f7a-9651-69cddbb5b94e">https://gbif.org/dataset/278b1d5c-d7a9-4f7a-9651-69cddbb5b94e</a>. Formatted as a Frictionless Data package
Esclusione della garanzia per i vizi della cosa venduta (Cass. civ., sez. II, 11 maggio 2016, n. 9651)
No full textAnnotazione di Cass. civ., sez. II, 11 maggio 2016, n. 9651
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe 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
No full text“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
No full textWe 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
PHOTOCATALYTIC DEGRADATION OF CONGO RED Over 1wt% CuO-ZnO COMPOSITE CATALYST
No full textAbstract: In this paper, the photocatalytic removal efficiency of this dye by a 1wt % CuO-ZnO nanocomposite was studied. The synthesized CuO-ZnO catalyst was characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-Visible spectroscopy.The degradation of Congo red was monitored using UV-Visible spectrophotometer. The XRD analysis of the catalyst revealed a hexagonal wurtzite structure. The effect of operating variables such as initial Congo red concentration, catalyst dosage and pH of the solution were studie.
Keywords: Photosynthetic, pH, Variable, Wurtzite, Degradation, Nano composite.
Title: PHOTOCATALYTIC DEGRADATION OF CONGO RED Over 1wt% CuO-ZnO COMPOSITE CATALYST
Author: Shamsu Musa Sayaya, Dr Abdulfatah SM, Salim Aliyu Yusuf
International Journal of Novel Research in Physics Chemistry & Mathematics
ISSN 2394-9651
Vol. 10, Issue 2, May 2023 - August 2023
Page No: 18-31
Novelty Journals
Website: www.noveltyjournals.com
Published Date: 15-June-2023
DOI: https://doi.org/10.5281/zenodo.8042208
Paper Download Link (Source)
https://www.noveltyjournals.com/upload/paper/PHOTOCATALYTIC%20DEGRADATION-15062023-2.pdfInternational Journal of Novel Research in Physics Chemistry & Mathematics, ISSN 2394-9651, Novelty Journals, Website: www.noveltyjournals.co
Field Oriented Control of IPMSM Fed by Multilevel Cascaded H-Bridges Inverter with NI-SOM sbRIO-9651 FPGA controller
No full textElectrical drives fed by Multilevel Inverters (MIs) are of considerable interest for traction and e-mobility applications. In detail, Cascaded H-Bridge Multilevel Inverter (CHBMI) is a promising solution for electrical drive optimization purposes in terms of efficiency, safety, integration and flexible use of energy sources. The aim of this paper is the experimental implementation of the field-oriented control strategy of Interior Permanent Magnet Synchronous Machine (IPMSM) fed by CHBMI by use of NI-SOM sbrRIO-9651 FPGA controller. This FPGA controller can be programmable in the LabVIEW programming environment with the consequent benefits of graphical programming. The paper address the acquisition of mechanical and electrical quantities necessary for closed-loop control, such as speed, position and currents, the development of their condition circuits, the control software implementation and the experimental validation. © 2022 IEEE
Dispelling the Myths Behind First-author Citation Counts
No full textWe 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
- …
