1,720,961 research outputs found
Strip tillage water movement in clay loam soil to fulfill plant water requirement
No full textDry land is one of the land resources having the possibility for the development of food crop agriculture especially on lands with light and medium technical constraints. The development of technology for the utilization of marginal land by turning it into productive land is still a big opportunity in agricultural development in Indonesia. Improvement of planting media by means of soil tillage method and appropriate plant irrigation technology is one of the efforts in solving the problem in clay loam land. The objective of this research was to develop water movement model in clay loam soil with minimum tillage and subsurface irrigation. Concept used in the model development was minimum tillage method with subsurface irrigation at the base of the tillage and irrigation method to fulfill crop water requirement. The concept was part of the dissertation research strengthened by scientific analyses as the basis for advanced research development. The analyses among others resulted in data of soil physical properties and making of interface for measurement together with a set of water movement testing apparatus. At the final stage this dissertation research was supported by analysis of water movement in a laboratory test and field validation on the performance of subsurface irrigation as well as test of cultivation technique on chili plant (Capsicum annuum L.) growth. The results showed that the movement pattern displayed on the contour indicated that the wetting process could reach a depth of -5 cm for the rooting zone of annual crop seedling. The result of the irrigation performance showed that effective wetting by using minimum strip tillage could only be developed by means of short irrigation path of less than 5 cm; so that it was suitable to be applied on limited land management or improvement in traditional form. The test result of cultivation technique on annual crop (Capsicum annuum L.) using minimum strip tillage with subsurface irrigation showed that the soil moisture for plant growth could be maintained where the plant was able to grow in accordance with the treatment used until the end of the research period. The developed model showed that the wetting pattern required time for distributing balanced moisture. This confirmed that the system developed in the form of research novelty was subsurface water movement to maintain the moisture at the strip tillage soil in order to give water availability for plant.Penelitian ini merupakan pengembangan konsep alternatif teknik budidaya tanaman pada lahan kering dengan tanah bertekstur lempung liat berdebu. Konsep berupa metode olah tanah terbatas beririgasi bawah permukaan pada dasar olahannya serta cara pemberian air untuk kebutuhan air tanaman. Konsep yang dikembangkan dibagi menjadi tiga bagian utama, yaitu: (a) tanaman semusim dan media tanam; (b) parit atau strip; dan (c) sistem pengairan (irigasi) dan drainase. Konsep tersebut merupakan bagian dari penelitian disertasi ini yang dikuatkan dengan analisa-analisa ilmiah sebagai dasar pengembangan penelitian lanjutan. Analisa-analisa tersebut di antaranya pembangunan model pergerakan air pada suatu tanah liat yang diolah terbatas dengan irigasi bawah permukaan. Sejalan dengan hal tersebut dihasilkan informasi data-data analisa sifat fisik tanah serta pembuatan suatu alat ukur (interface) beserta rangkaian apparatus uji pergerakan air. Penelitian ini pada tahapan akhir dikuatkan dengan penelitian analisa pergerakan air dalam suatu pengujian di laboratorium serta validasi di lapangan terhadap kinerja irigasi bawah permukaan di lapangan dan pengujian teknik budidaya terhadap pertumbuhan tanaman uji. Penelitian utama ditujukan guna merealisasikan pendekatan novelti penelitian dengan konsep pengembangan teknik budidaya tanaman merupakan pengelolaan kelembaban tanah di zona perakaran. Hal tersebut dimaksudkan untuk mempertahankan kelembaban atau kadar air tanah agar tersedia pada saat dibutuhkan oleh tanaman. Hasil fitting by eyes terhadap grafik difusifitas dan kadar air didapatkan nilai-nilai parameter yang dibutuhkan dalam memenuhi sifat fisik tanah penelitian yang selanjutnya disimulasikan pada model pergerakan air horizontal pada strip olah tanah terbatas beririgasi bawah permukaan. Data yang dihasilkan tersebut diaplikasikan pada pembangunan konsep simulasi pergerakan air pada strip olah tanah terbatas beririgasi bawah permukaan menggunakan konsep untuk kuantifikasi jumlah air dalam tanah, yang terdiri dari 2 pendekatan yaitu volumetric water content, θ (volume air) dan besaran hisapan matriks (matrix suction (cm)) atau pressure head, h (-cm). Langkah selanjutnya mengkonversi data hasil simulasi ke bentuk kontur setelah diolah menggunakan software Surfer 8 menjadikan tampilan lebih mudah dipelajari pola pergerakan yang terjadi
PEMANFAATAN SALURAN IRIGASI SAWAH DESA RINDU HATI BENGKULU TENGAH MELALUI TEKNOLOGI TEPAT GUNA MIKROHIDRO
Full text linkThe need for electrical energy is increasing in every area and year. However, not all sites can be fulfilled - incredibly outlandish locations. At the same time, the natural potential in there, such as river irrigation flows, can be used as an additional source of electricity for the area. This paper describes the science and technology-based community service activities by applying appropriate micro-hydro technology to produce electrical energy. This service aims to optimize natural potential in the form of rice field irrigation channels as street lighting in Rindu Hati Village, Central Bengkulu Regency. The methods are socialization and design of micro hydro systems with service participants. The service implementation consists of equipment preparation, socialization, and installation of a micro-hydro system with service participants from members of a group ‘Pokdarwis’ of the Rindu Hati Village. The involvement of participants with the service team made this activity possible to carry out properly so that street lighting with energy sources from irrigation channels could be realized. Monitoring the condition of the sustainability of the micro-hydro system was still carried out by appointing one of the service participants as the person in charge of the micro-hydro system. --- Kebutuhan masyarakat terhadap energi listrik setiap tahun terus meningkat. Namun tidak semua daerah dapat tercukupi kebutuhan listriknya, terutama untuk daerah yang terpencil, sedangkan potensi alam di daerah terpencil seperti aliran irigasi sungai dapat dimanfaatkan sebagai sumber listrik tambahan bagi daerah tersebut . Tulisan ini memaparkan kegiatan pengabdian masyarakat berbasis iptek melalui penerapan teknologi tepat guna mikrohidro dalam upaya menghasilkan energi listrik. Tujuan pengabdian ini untuk mengoptimalkan potensi alam berupa saluran irigasi sawah sebagai penerangan jalan Desa Rindu Hati, Kabupaten Bengkulu Tengah. Metode yang digunakan adalah sosialisasi dan rancang bangun sistem mikrohidro dengan peserta pengabdian. Pelaksanaan pengabdian terdiri dari tahapan persiapan perangkat, sosialisasi dan instalasi skistem mikrohidro dengan peserta pengabdian yang berasal dari anggota Pokdarwis Desa Rindu Hati. Hasil dari kegiatan ini adalah terbentuknya sistem mikrohidro yang memanfaatkan aliran irigasi sungai sehingga dapat dimanfaatkan sebagai sumber penerangan lampu jalan di lokasi tersebut.Pemantauan kondisi keberlangsungan sistem mikrohidro tetap dilakukan dengan penunjukkan salah seorang peserta pengabdian sebagai penanggung jawab sistem mikrohidro
Pengendalian Mutu Selai Kecombrang Melalui Perbaikan Pengolahan Pada Koperasi Perempuan Pelestari Hutan (KPPH) di Rejang Lebong
Full text linkTarget community of this activity was forest conservative women who produced various food products including jam, syrup, “dodol” cake, and sticks whose qualities needed to be improved. It was observed that the “kecombrang” jam and syrup brought up different colors for each production run. The unpleasant taste was identified in the dodol cake. The jackfruit stick lacked crunchiness which might be due to improper drying. The objective of this community service activity was a technology transfer consisting of three topics: (1) Quality control in material handling to avoid browning of raw material (2) Quality control of food processing to improve the quality of resulting products, and (3) Introduction of food drying utilizing a YSD-UNIB12 solar dryer. The activity included: meeting coordination and material preparation, counseling, and interactive dialogue. The result indicated that 70% mastered the delivery topics and 30% understood some parts of them. Participants were very enthusiastic in participating in the counseling conducted by the team.Target community of this activity was forest conservative women who produced various food products including jam, syrup, “dodol” cake, and sticks whose qualities needed to be improved. It was observed that the “kecombrang” jam and syrup brought up different colors for each production run. The unpleasant taste was identified in the dodol cake. The jackfruit stick lacked crunchiness which might be due to improper drying. The objective of this community service activity was a technology transfer consisting of three topics: (1) Quality control in material handling to avoid browning of raw material (2) Quality control of food processing to improve the quality of resulting products, and (3) Introduction of food drying utilizing a YSD-UNIB12 solar dryer. The activity included: meeting coordination and material preparation, counseling, and interactive dialogue. The result indicated that 70% mastered the delivery topics and 30% understood some parts of them. Participants were very enthusiastic in participating in the counseling conducted by the team
Jurnal Keteknikan Pertanian Vol.19 No.2, Agustus 2005
No full textPhysical and mechanical properties of parenchyma of leaf and fruits stem of palm oil are basic data in designing of harvesting machine of palm oil, which had never been provided yet. The output of this research were the mechanical properties (i.e. modulus of elasticity (E), tensile strength (a), poisson ratio (v) and coefficient of friction (p), which needed for analyses on specific cutting force of parenchyma of leaf and fruits sten? of palm oil
Strategi Pengembangan Industri Kecil Penggilingan Ikan di “Penggilingan Evi Tenggiri” Kota Bengkulu
No full textTujuan penelitian yakni mengidentifikasi dan menganalisis keadaan internal dan eksternal yang memberikan dampak pada pengembangan industri kecil “Penggilingan Evi Tenggiri” serta memperoleh alternatif strategi dalam mengembangkan industri kecil ini. Hasil penelitian diperoleh faktor strategis yang paling berpengaruh dalam pengembangan usaha penggilingan ikan yaitu rencana pemasaran (kekuatan), target jumlah produksi (kelemahan), suplai bahan baku (peluang) dan musim tidak menangkap ikan (ancaman). Hasil analisis matriks IFE menggambarkan pemberian bobot dan rating menghasilkan skor kekuatan sebesar 1,58 dan skor kelemahan sebesar 1,23. Poin tersebut menunjukkan bahwa faktor kekuatan memiliki tingkat signifikansi yang lebih tinggi daripada faktor kelemahan. Sementara itu, pada faktor eksternal, skor peluang sebesar 1,47 dan skor ancaman sebesar 1,28 mengindikasikan faktor peluang yang dimiliki oleh usaha ini memiliki dampak yang lebih besar daripada faktor ancaman. Pertimbangan ini menempatkan alternatif strategi pengembangan usaha dalam kuadran I, sehingga strategi yang relevan untuk diadopsi adalah Strategi SO (Strengths-Opportunities). "Penggilingan Evi Tenggiri" dapat memaksimalkan bahan baku yang memadai untuk memanfaatkan peluang, hubungan kerja sama yang kuat dengan konsumen, penyedia bahan baku, dan pemerintah selain itu juga dapat meningkatkan rencana pemasaran dengan melancarkan promosi melalui berbagai media untuk meningkatkan daya saing dan penguasaan pasar, serta memaksimalkan saluran distribusi yang lebih luas
Physical and Chemical Properties of Biscuits Fortified with Bee Pollen
Full text linkFunctional foods, such as bee pollen, contain nutrients and positively affect health. Bee pollen is a natural bee product with high antioxidant potential. Phenolic compounds are found in bee pollen as antioxidants. Other contents of bee pollen are protein, minerals, and ash. Bee pollen contains several essential amino acids required by the human body. Bee pollen has been used to fortify various food products, such as yoghurt, bread, and biscuits. The study aimed to evaluate bee pollen biscuits. The experimental design was a Completely Randomized Design (CRD) with one factor. The factor was substituted for bee pollen (0%, 5%, 10%, 15%, 20%) for wheat flour. The research revealed that the substitution of bee pollen had a significant impact on the total phenolic content, CIE Lab values (Lightness, a*, b*), hue angle, and chroma of the biscuits. In contrast, substituted bee pollen did not affect the protein and ash content. The results showed that bee pollen has a positive effect on the quality of the biscuit, indicating its potential as a functional food
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
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