1,720,963 research outputs found
Keragaman Genetik Dringo (Acorus Calamus L.) Yang Digunakan Sebagai Tumbuhan Obat Pada Beberapa Etnis Di Indonesia Berdasarkan Inter-Simple Sequence Repeats (Issr)
No full textDringo (Acorus calamus L.) used as medicinal plant in Indonesian ethnic groups. Those information based on Ristoja 2012 research. The objective of Ristoja was to provide a database of local ethnomedicine knowledge, herbal formula and medicinal plant in Indonesia. Inter Simple Sequence Repeats (ISSR) markers were used to assess the genetic diversity of Dringo from 20 selected ethnic groups in Indonesia. Ten selected ISSR primers generated 82 amplified fragments with 51,2% were polymorphic. Dice coefficient was used to calculate similarity index and UPGMA was used to construct a dendogram. The genetic similarity index among accessions ranged from 76,7-100% thus indicating that low level of genetic diversity in dringo. Genetic diversity database can be useful for medicinal plant mapping and conservation especially for in situ conservation
Karakterisasi genetik Tempuyung (Sonchus arvensis L.) berdasarkan penanda molekuler sequence-related amplified polymorphism
No full textTempuyung (Sonchus arvensis L.) banyak dimanfaatkan sebagai tumbuhan obat untuk menurunkan tekanan darah
tinggi dan peluruh air seni. Tempuyung mudah dan banyak dijumpai di berbagai tempat di Indonesia. Keragaman
genetik tempuyung merupakan informasi penting sebagai data base untuk penelitian lebih lanjut terutama
mendukung standarisasi tumbuhan obat. Penelitian ini bertujuan untuk karakterisasi genetik tempuyung
menggunakan penanda molekular SRAP (Sequence-related amplified polymorphism). Sebanyak 13 aksesi tempuyung
yang dikoleksi dari 8 lokasi digunakan sebagai sampel dan diamplifikasi menggunakan 5 pasang kombinasi primer
SRAP. Indeks similaritas dihitung menggunakan rumus indeks similaritas Dice kemudian disusun analisis klaster
dan konstruksi dendogram dilakukan dengan menggunakan metode Unweighted Pair Grup Method Using Aritmetic
Method (UPGMA). Hasil penelitian menunjukkan adanya variasi genetik antar aksesi tempuyung dan terbagi
menjadi 4 klaster pada indeks similaritas 0,7719. Aksesi Citeurep dan aksesi Turen 3 mempunyai hubungan
kemiripan yang terdekat pada indeks similaritas 0,8936.Penanda molekular SRAP merupakan teknik efektif dan
efisien untuk karakterisasi genetik antar aksesi tempuyung
KERAGAMAN INSTRASPESIFIK AKSESI EKINASE (Echinacea purpurea (L.) Moench) HASIL SELEKSI MASSA TAHAP I BERDASARKAN ANALISIS ISSR
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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
Photoperiod effect on the growth and artemisinin content of Artemisia Annua grown in tropical region
No full textPENANGANAN DAN PENERAPAN TEKNOLOGI PASCAPANEN TANAMAN OBAT
No full textPost-harvest handling of medicinal plants (MP) is an important process for providing medicinal materials which either directly used as a simplicia or further processed products. Improper handling will deteriorate the physical, chemical and biological (microbial contamination) quality of simplicia. Otherwise, the appropriate process will achieve good quality products especially the target active constituents of medicinal plants that can be maintained, or even increased. The purpose of this paper was to discuss the important aspects of postharvest management and the application of technology to reduce the loss of quality and quantity of medicinal plant yields. The post-harvest process of medicinal plants generally includes the stages of fresh sorting, washing, draining, cutting, drying, dry sorting, packaging and storing. The principle of postharvest handling of medicinal plants must be based on obtaining the product with the lowest possible cost, water content, energy consumption, space, and resources, and with the highest physical, chemical, and biological quality. The best postharvest handling methods for one medicinal plant cannot be generally applied to other medicinal plants. Proper post-harvest technologies should be developed for an individual MP to achieve quality products. Comprehensive research on postharvest handling process is needed for individual MP commodity based on the characteristics of each ingredient and the target of active principles so that the most suitable method for each type of medicinal plant is obtained
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
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
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