827,373 research outputs found
EFEK ANTIBAKTERI EKSTRAK DAUN RUI (Harrisonia perforata Merr.) TERHADAP BAKTERI Pseudomonas aeuroginosa
No full textABSTRAK
Latar Belakang : Salah satu tumbuhan yang dapat dimanfaatkan sebagai obat herbal adalah Harrisonia perforata Merr yang dapat dijumpai di daerah tropis. Di Sulawesi Tengah khususnya kota Palu, Harrisonia perforata Merr dikenal masyarakat lokal dengan nama Rui. Bremmer (1992) melaporkan bahwa tumbuhan ini mempunyai aktivitas antimalaria, serta mengandung senyawa Omenthylalloptaeroxylin, perforatic acid, limonoid dan perforatin. Angka kematian akibat infeksi oleh bakteri Pseudomonas aeruginosa diduga mencapai 50%, tergantung dengan jenis infeksi.
Tujuan : Untuk mengetahui efek antibakteri ekstrak daun Rui (Harrisonia perforata Merr) terhadap bakteri Pseudomonas aeruginosa.
Metode : Jenis penelitian ini adalah eksperimental posttest control group only design dengan pengujian aktivitas antibakteri menggunakan metode difusi agar dengan mengukur zona hambat yang terbentuk. Konsentrasi ekstrak daun rui yang diiuji adalah 10%, 25%, 40%, dan 65% dengan Levofloxacin sebagai kontrol positif dan akuades kontrol negatif. Masing-masing perlakuan direplikasi sebanyak empat kali.
Hasil : Hasil penelitian menunjukkan bahwa ekstrak daun rui (Harrisonia perforata Merr.) dapat menghambat pertumbuhan bakteri Pseudomonas aeruginosa pada semua konentrasi yang diujikan. Dari hasil ini diperoleh nilai kadar hambat minimal (KHM) adalah 10%. Hasil uji statistik dengan menggunakan one-way ANOVA didapatkan nilai signifikasi p < 0,05 yang berarti terdapat perbedaan signifikan pengaruh ekstrak daun rui yang diberikan kepada bakteri Pseudomonas aeruginosa.
Kesimpulan : Ekstrak daun rui (Harrisonia perforata Merr.) memilki efek antibakteri terhadap bakteri Pseudomonas aeruginosa.
Kata kunci : Pseudomonas aeruginosa, Harrisonia perforata Merr., antibakteri
ABSTRACT
Background: One of the plants that can be used as an herbal remedy is Harrisonia perforata Merr, which can be found in the tropical areas. In Central Sulawesi, particularly in Palu city, Harrisonia perforata Merr is also known as Rui by the local citizens. Bremmer (1992) reported that this plant have anti malarial activity, as well as compounds containing O-menthylalloptaeroxylin, perforatic acid, limonoid and perforatin. Death rate due to the infection by bacterias is 50%, depending on the type of infection, respectively.
Objective: To determine antibacterial effect in Rui leaf extract (Harrisonia perforata Merr) against Pseudomonas aeruginosa.
Methods: This study is a posttest control group only experimental design by using agar diffusion method for anti bacterial activity test and measure the inhibition area. The concentration extract of Rui leaf that tested were 10%, 25%, 40%, 65%, with Levofloxacin as a positive control and distilled water as a negative control. Each the concentration was replicated four times.
Results: The results showed that the extraxt of Rui leaf (Harrisonia perforata Merr.) may inhibit the growth of Pseudomonas aeruginosa in all concentration tested. Results obtained value of the minimum inhibitory concentration (MIC) was 10%. Results of statistical test by using one-way ANOVA significance value of
[Handwritten list of names by an unknown author #1]
No full textHandwritten note by an unknown author, listing various names
Mapping the Discipline of the Olympic Games An Author-Cocitation Analysis
No full textThe authors conducted an author cocitation analysis on prominent authors writing about the Olympics during the 1990s. Author cocitation is an established bibliometric technique that can be used to measure the relative similarities of topics written about by the cited authors. This enables a visual representation of the “intellectual space” of the discipline, in this case the Olympics, to be created for the period under review. So core and peripheral research areas are identified, along with their major contributors. The representation appears as a two-dimensional cluster-enhanced map. Subject expertise was then applied to the results to place labels on the generated clusters of authors and their topics
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
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
A propos du sexe des fleurs : le cas des "rui"
No full textHow to translate the term rui when it appears in texts prior to the scientific knowledge of sexuality in plants? Chinese or bilingual dictionaries give only the meaning of 'pistil' or 'stamen' or 'reproductive organs' (in flowers). In order to try to find an adequate equivalent the author considers the case of European texts about plants before the scientific knowledge of sexual reproduction of plants and the creation of a detailed vocabulary for the various parts of the flower.Metailie Georges. A propos du sexe des fleurs : le cas des "rui". In: Cahiers de linguistique - Asie orientale, vol. 23, 1994. pp. 223-230
Interview to Rui Furtado, AFA Consult foundator
No full textThis research addresses a series of projects built by the engineering company "AFA Consult" through the testimony of one of its engineers, Rui Furtado, who is also a professor of structures at the Universidade Lusófona do Porto, where the author was a student of his. The chosen projects follow the storyline of being built using a mixed structure of steel and concrete. The research presents, first, a series of case studies with mixed structural solutions for different architectural spaces. The article then focuses on the testimony of Rui Furtado through an interview that delves into the figure of Paulo Mendes da Rocha, following the thread of the Car Museum in Lisbon, one of the case studies with a mixed structure chosen. In addition, the professional relationship between Paulo and Rui is explored through the exhibition currently on view at Casa da Arquitectura (Porto), "Paulo, beyond drawing", of which Rui Furtado is the curator. Thus, the path is traced towards reconciling conclusions between the worlds of architecture and engineering, with humanism as the protagonist.La presente investigación aborda una serie de proyectos construidos por la empresa de ingeniería “AFA Consult” a través del testimonio de uno de sus ingenieros, Rui Furtado, que además es profesor de estructuras en la Universidade Lusófona do Porto, donde el autor fue alumno suyo. Los proyectos escogidos siguien la linea argumental de estar construidos mediante una estructura mixta de acero y hormigón. La investigación presenta, primeramente, una serie de casos de estudio con soluciones estructurales mixtas para diferentes espacios arquitectónicos. El artículo, posteriormente, se centra en el testimonio de Rui Furtado mediante una entrevista que profundiza en la figura de Paulo Mendes da Rocha, siguiendo el hilo del Museo de los Coches en Lisboa, uno de los casos de estudio con estructura mixta escogidos. Además, se explora la relación profesional entre Paulo y Rui mediante la exposición que actualmente puede verse en Casa da Arquitectura (Oporto), “Paulo, más allá del dibujo”, de la que Rui Furtado es comisario. Así, se traza el camino hacia unas conclusiones reconciliadoras entre los mundos de la arquitectura y la ingeniería, con el humanismo como protagonista.Peer Reviewe
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
China's Cultural Revolution
No full textThe Cultural Revolution of China, which started in 1966, was an attempt by Chairman Mao to control the Chinese people. Beginning with an excerpt from The dismissal of Hai Rui, this program presents the details of the movement that led to the deaths of half a million people before finally consuming itself. Jack Gray, author of Rebellions and revolutions, and Zhang Yongning, son of a Party official, offer their insights into the Communist politics of the day.Narrator: Daniel Evans.English and Chinese dialogue with English subtitles
Rui Neto - The Cut
No full textSpaces and architectures are not only created from the specific materials needed to build them, they also exist as images and quotations, as narratives and films conjured before the eye of the beholder. These conscious and unconscious fictions have such a fundamental effect on our perception that they also influence what is actually built.
Rui Neto‘s work seeks to explore these interactions between imagination, design, and realization. Entitled "The Cut", the exhibition presents sectional drawings and sectional models that help us navigate the relationship between an oneiric world and a real tectonic one. From a delicate and intense dialogue there emerges a palimpsest consisting of architect‘s fragments and imaginary worlds with an archaeological appearance
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