1,720,960 research outputs found
PERANCANGAN COLD STORAGE UNTUK PRODUK REAGEN
Full text linkCold Storage merupakan suatu mesin refrigerasi yang digunakan untuk menyimpan suatu produk dalam suhutertentu, sehingga kualitas produk tetap terjaga. Dalam perancangan cold storage ini dilatar belakangi olehbeberapa permasalahan, antara lain bahwa saat ini produk reagen disimpan pada unit refrigerator berdayatampung kecil, yaitu sekitar 300 kit. Sedang untuk kedepannya produk reagen akan diproduksi dalam jumlahyang banyak sekitar yaitu sekitar 1500 kit. Oleh karena itu, untuk mengatasi permasalahan itu maka penulisakan merancang suatu alat pendingin yang bisa menampung jumlah produk reagen dalam kapasitas besar yaitucold storage. Suhu yang diperlukan oleh produk reagen berkisar 2–8°C. Saat beroperasi cold storage harusdapat mengatasi beban pendinginan dari produk yang didinginkan, beban transmisi, beban infiltrasi dan bebantambahan. Dengan menggunakan rumus perpindahan panas, diagram tekanan-entalpi dan tabel dapat dihitungbeban pendinginan, laju aliran massa, daya kompresor dan koefisien prestasi (COP) dari daur kompresi uap.Dari hasil perancangan didapat beban pendinginan total 5248,7 Watt atau 1,49 TR, laju aliran massarefrigeran sebesar 0,035 kg/det, daya compressor yang dibutuhkan 1,29 kW dan koefisien prestasi kerja (COP)sebesar 3,97
PERANCANGAN DAN PEMBUATAN TUNGKU HEAT TREATMENT
Full text linkHeat treatment adalah suatu proses pemanasan dan pendinginan logam dalam keadaan padat untuk mengubahsifat-sifat fisis logam. Dalam Heat Treatment dibutuhkan Tungku Heat Treatmeant untuk pemanasannya.Tungku Heat Treatment adalah ruang dimana didalamnya dilakukan pemanasan pada benda kerja, padatemperatur tertentu dan ditahan selama selang waktu tertentu. Agar pemanasan terjadi secara optimal,diperlukan Tungku Heat Treatment yang mampu menahan panas agar tetap berada didalam ruang tungku.Dalam penelitian ini dibuat Tungku Heat Treatmen dengan dinding dari bahan Refraktori (batu tahan ap).Refraktori adalah bahan anorganik bukan logam yang sukar leleh pada temperatur tingg
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
PENGARUH LEDAKAN POPULASI IKAN SAPU-SAPU (PTERYGOPLICHTHYS SPP) TERHADAP PRODUKSI HASIL TANGKAPAN JARING INSANG DI PERAIRAN DANAU SIDENRENG
Get PDFIkan sapu-sapu merupakan salah satu jenis ikan yang termasuk dalam invasive species. Terjadinya ledakan populasi ikan sapu-sapu di perairan Danau Sidenreng memberikan dampak terhadap keberlanjutan biodiversitas perairan juga memberikan dampak terhadap produksi hasil tangkapan nelayan. Penelitian ini bertujuan untuk mengetahui pengaruh ledakan populasi ikan sapu-sapu terhadap volume hasil tangkapan nelayan jaring insang. Penelitian ini dilaksanakan selama tiga bulan yaitu dari bulan Juni hingga Agustus 2020 di Desa Teteaji dan Kelurahan Wette’e, Kab. Sidenreng Rappang. Berdasarkan perbandingan jumlah hasil tangkapan (jumlah ekor) diperoleh persentase jumlah hasil tangkapan ikan target dalam 9 kali trip penangkapan yaitu 53,81% dan 46,19% untuk tangkapan buangan (ikan sapu-sapu). Sedangkan berdasarkan hasil analisis uji Mann-Whitney didapatkan nilai Asympe sig (2 tailed) sebesar 0.000 yang artinya p value < 0,05 maka h0 ditolak. Hal ini menandakan terdapat perbedaan volume hasil tangkapan nelayan sebelum adanya ledakan populasi ikan sapu-sapu dan saat terjadi ledakan populasi ikan sapu-sapu di Perairan Danau Sidenreng.
Kata kunci: ikan sapu-sapu, invasive spesies, jaring insang, ledakan populas
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
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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