1,720,969 research outputs found
PERAN BERAT MOLEKUL PROTEIN ENZIM EKSTRAKSELULER FUSARIUM OXYSPORUM FS.P. CUBENSE SEBAGAI FAKTOR VIRULENSI PADA TANAMAN PISANG
No full textThe research aims to study the role of extracellular enzymes molecule wight on the virulence of Fusarium oxysporum f.sp. cubence (Foc). The study was conduvted in the glass house, laboratory of plant pathology. The isoletd used in this research are Bnt 1 and Bnt 2 from Yogyakarta, Btu 3 from Malang, Wsb 3 from Wonosobo, Lmp 3from Lampung and, Kjg 3 from Kalimantan. Banana cultivar ambon kuning is used as tested plant. Pathogenicity test is conducted by using hydroponic system. The plant roots are injured with a needle and then put into filled with sterile water. The suspension of Foc conodia is added in to plastic cup up to 106 spore/ml in concentration. Observation of symptom was conducted at 6 week by counting the score of necrotic symptom (RDI/Rhizome Discoloration Index) on banana cob which cut horizontally. Analysis extracelluler enzymes is done by using sodium dodecyl sulphate polycrylamide gel electrophoresis (SDS-PAGE).The result of pathogenicity test showed that the virulence of six isolates of Foc is not significantly different. Est of extracellular enzyme activity on six isolates of Foc showed that there is significant different between extracellular enzymes activity on isolates of Bnt 2, Wsb 3, Lmp 3, Kjg 3, and control but not for isolates of Bnt 1 and Btu 3. The six isolates have protein variation both amount and type that is probably related to its patogenisity. The result of SDS-PAGE showed that the six isolates of Foc have same protein pattern at 55,6 kDa. Protein pattern of Bnt 1, Bnt 2, Btu 3, Wsb 3, and Lmp 3 is laid on 42.84 kDa. Isolate of Bnt 2 has protein pattern at 36.5 kDa and Btu 3 has protein pattern at 20 kDa. The protein pattern that approaches to the pattern of polygalacturonase is Bnt 2 at 36.5 kDa molecule wight
Analisis Manfaat Ekonomi, Ekologi, dan Sosial pada Integrasi Padi-Itik (Studi Kasus Pertanian Terpadu Pakkampi Kabupaten Sidenreng Rappang)
Full text linkSustainable farming systems are a solution to overcome the challenges of conventional rice cultivation which still relies on chemicals and has high production costs. One sustainable approach is rice-duck integration, which combines rice cultivation with duck rearing to increase productivity and efficiency of farming businesses. This research aims to analyze the economic, ecological and social benefits of the rice-duck integration system in Pakkampi Farming Enterprises, Panca Rijang District, Sidenreng Rappang Regency. This research uses a quantitative descriptive method with purposive sampling technique. Data was collected through interviews and secondary data analysis from the local Agriculture Service. Data analysis was carried out descriptively. For the economic aspect, descriptive analysis is used to calculate business efficiency using the R/C ratio (Revenue to Cost Ratio). Meanwhile, the ecological aspect uses quantitative soil testing using a soil testing device (PUTS) and the social aspect is analyzed using quantitative descriptive methods. The research results show that the rice-duck integration system provides significant economic benefits with an R/C ratio of 5.7, indicating that this business is very profitable. From an ecological aspect, this system reduces the use of chemical pesticides through natural pest control by ducks and increases soil fertility with duck droppings as organic fertilizer. Socially, this integration strengthens cooperation between farmers, improves farmer welfare, and provides healthier food products. Thus, the rice-duck integration system has proven to be a sustainable, efficient and effective agricultural model for local farmers.
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
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
Implikasi Model Desa Konservasi Terhadap Kesejahteraan Masyarakat Sekitar Kawasan Konservasi KPA/KSA Kunyi
Full text linkProgram Model Desa Konservasi (MDK) merupakan model konservasi yang memberi peluang kepada masyarakat untuk terlibat aktif dan mendapat akses yang aman dalam pemanfaatan jangka panjang dalam mendukung konservasi kawasan hutan. Model akses pemanfaatan ini dapat berbeda-beda dari satu kawasan dengan kawasan lain tergantung pada kesepakatan pihak yang berwenang dalam pengelolaan kawasan. Penelitian ini bertujuan untuk mendeskripsikan implikasi program tersebut terhadap kesejahteraan masyarakat Desa Kunyi. Respons masyarakat berdasarkan 3 indikator, yaitu pengetahuan, sikap, dan keterampilan yang ditabulasi secara deskriptif kemudian dinilai dengan skala Likert dalam penilaian quisioner, dan pengukuran kategori data yang diperoleh menggunakan rumus Sturges. Hasil penelitian ini menyimpulkan bahwa program Model Desa Konservasi (MDK) dianggap berimplikasi positif terhadap kesejahteraan masyarakat di Desa Kunyi telah mampu memberi nilai tambah ekonomi masyarakat. namun nilai pendapatan ini pada dasarnya masih relatif kecil bila dibandingkan dengan kebutuhan masyarakat. Nilai pendapatan masyarakat sangat berpeluang untuk ditingkatkan dengan memanfaatkan potensi dan peluang yang ada, tentunya harus dibarengi dengan keberlanjutan peningkatan sumberdaya masyarakat dan fasilitasi oleh pihak BBKSDA terutama dalam pembukaan peluang pasar ataupun mitra/jaringan kerja
Strategi Pengembangan dan Peningkatan Produksi Sektor Basis pada Tanaman Hortikultura di Kabupaten Sidenreng Rappang
Full text linkKabupaten Sidenreng Rappang memiliki potensi pertanian lain selain tanaman pangan yang memerlukan upaya optimalisasi untuk meningkatkan produksi pertanian pada sektor hortikultura. Komoditas hortikultura yang sedang dikembangkan di Kabupaten Sidenreng Rappang yaitu cabai besar, sawi, tomat, kacang panjang, terung, mentimun, kangkung, bayam dan cabai rawit. Penentuan komoditas sektor basis khususnya di sektor hortikultura belum dilakukan secara mendalam sehingga belum diketahui komoditi yang menjadi basis untuk difokuskan. Penelitian ini bertujuan untuk mengidentifikasi sektor basis tanaman hortikultura serta merumuskan strategi yang dapat diterapkan untuk mengembangkan dan meningkatkan produksi sektor basis tersebut di Kabupaten Sidenreng Rappang. Penelitian ini telah dilaksanakan pada bulan Mei sampai Juli 2024 di Kabupaten Sidenreng Rappang. Metode analisis data yang digunakan ada dua yaitu analisis Location Quotient (LQ) dan analisis Interpretive Structural Modeling (ISM). Hasil penelitian menunjukkan bahwa komoditas hortikultura yang menjadi sektor basis yaitu cabai rawit dan kacang panjang. Komoditas yang menjadi fokus pada strategi pengembangan adalah cabai rawit karena memiliki nilai LQ lebih besar dari pada komoditi kacang panjang meskipun sama-sama berada pada sektor basis yaitu 2,87 dan 2,76. Strategi pengembangan dan peningkatan produksi komoditas cabai rawit berdasarkan hasil analisis ISM menghasilkan rekomendasi praktis yang sesuai dengan kondisi lokal yaitu pendidikan dan pelatihan penyuluh pertanian, pembinaan kelompok tani, pelatihan petani, dan penggunaan benih bermutu. Penelitian memberikan solusi spesifik pengembangan ekonomi di Kabupaten Sidenreng Rappang dengan menyesuaikan strategi berdasarkan kondisi geografis, sumber daya, dan permintaan lokal serta internasional
- …
