1,721,056 research outputs found
Analisis Keragaman Morfometrik Ikan Kembung (Rastrelliger kanagurta Cuvier, 1816) di Perairan Utara Jawa sebagai Dasar Pengelolaan
No full textPengelolaan. Dibimbing oleh ZAIRION dan MOHAMMAD MUKHLIS KAMAL.
Ikan kembung (Rastrelliger kanagurta) tergolong kelompok ikan pelagis
kecil yang sangat potensial diWilayah Pengelolaan Perikanan (WPP) 712. Adapun
demikian informasi tentang unit stok nya masih minim, semetara itu pengetahuan
tentang unit stok penting sebagai dasar pengelolaan. Penelitian ini bertujuan
menganalisis keragaman morfometrik dan menduga unit stok ikan kembung
(Rastrelliger kanagurta), yang dilakukan pada tiga lokasi di perairan utara Jawa
yang meliputi perairan Laut Lampung Timur, Rembang, serta selatan Madura
menggunakan metode morfometrik baku dan truss network analysis. Analisis
hubungan panjang bobot yang dilakukan menunjukkan bahwa ikan kembung lelaki
memiliki pola pertumbuhan alometrik negatif. Hasil analisis kluster membagi ikan
kembung (Rastrelliger kanagurta) di perairan utara Jawa mejadi dua populasi yang
terpisah menggunakan metode Truss Network Analysis. Adapun analisis
diskriminan menunjukkan adanya populasi yang tumpang tindih di Perairan
Rembang dan Perairan Selat Madura. Adanya perbedaan karakter morfometrik dari
masing masing lokasi sehingga diduga terdapat potensi adanya lebih dari satu unit
stok ikan kembung lelaki
Memristive behavior of Ti02 thin film by RF magnetron sputtering / Mohammad Mukhlis Ramly
Get PDFThis project is on the fabrication and electrical characteristic of a memristive device with titanium dioxide (Ti02) as an active layer on two different substrates which are silicon (Si) and glass. Bottom electrodes of 60nm thick platinum were grown on the substrates before the TiC>2 deposition. Two layers of TiC>2 thin films were grown on the bottom electrode by radio frequency (RF) magnetron sputtering forming a memristive device. The first set of sample is a layer of T1O2 deposited on silicon substrate and exposed to plasma before the deposition of the second layer. The plasma treatment time was varied; for 0 minutes, 5 minutes and 10 minutes. The second set of sample is a Ti02 layer deposited on glass substrates and being etched by 1% hydrofluoric (HF) before deposition the second layer. The etching time was varied; for 5 seconds and 7 seconds. Current-voltage (I-V) curves of the samples were taken from the voltage loop ranging 0V to -5V, -5V to 5V then back to 0V and also from - 5V to 5V then back to -5V to show the bias dependent switching characteristics that match the electrical behavior reported for memristor. The second set of sample (etching method) gives better memristive behavior compared to the first set of sample (plasma treatment method). Beside, second loops which were measured from -5V to 5V then back to -5V, gives batter memristive behavior with less noise compared to the first loop
Fabrication and characterization of nickel silicide nanowire electrodes by solid-state diffusion controlled growth for supercapacitor / Mohammad Mukhlis Ramly
No full textThe growth of nickel silicide nanowires (Ni3Si2 NWs) using solid-phase diffusion controlled growth were studied in this work. The Ni3Si2 NWs were grown on Ni foil and Ni foam substrates coated with Ni film using a home-built chemical vapor deposition (CVD) system. The studies started with the effect of silane (SiH4) flow-rate and substrate temperature on the growth, structure, and electrochemical properties of the NWs. Ni3Si2 NWs were grown on Ni foil by optimizing SiH4 flow-rate (1 to 5 sccm) and substrate temperature (350 to 500°C). These variations produced a different type of Ni3Si2 NWs morphologies such as dendritic, ultra-thin, and root-tips. The ultra-thin NWs have an average diameter and length of 16 ± 3 nm and 6.5 ± 0.5 ?m respectively, with the aspect ratio of 406. Next, the optimization of the growth parameters to obtain high quality of Ni3Si2 NWs was carried out by varying Ni film thickness in between 90 ± 5 and 220 ± 5 nm. These NWs exhibited morphology of straight NWs with diameter and length between 16 to 23 nm and 2.9 to 3.9 ?m, respectively. Based on these three optimized parameters, the high-density Ni3Si2 NWs demonstrated the highest specific capacity value with a maximum value of 330.5 C/g at current density 1 A/g. In the last part of this thesis work, the optimum parameters from the three variations were selected to growth Ni3Si2 NW with high density and straight nanowire morphology, and high electrochemical performances, to fabricate a hybrid supercapacitor electrode. The supercapacitor performance of Ni3Si2 NW-based electrode on Ni foil and foam was evaluated and compared. This highly dense packed thin, straight, and long morphologies NWs on Ni foam have an average length and diameter of 12.5 ± 0.3 ?m and 13 ± 2 nm respectively, with a high aspect ratio of 961 owing to their extremely large surface area (5.184 x 1011 NWs/cm2). The fabricated Ni3Si2 NWs/activated carbon-based asymmetric supercapacitor exhibited a maximum specific capacity of 578.3 C/g, an energy and power density of 62.24 Wh/kg at 387.5 W/kg respectively, together with a good cyclic stability with 76 % capacity retention after 3000 cycles. The correlations of the electrochemical performances with their morphology, compositions, and structural properties of Ni3Si2 NWs are summarized at the end of the thesis
NIMS: MK Chocotub / Muhammad Kamal Ariffin Jamalluddin and Muhammad Muizzuddin Mohammad Mukhlis
Get PDFMK Chocotub is a sub business under Nims Chocotub and based on Shah Alam, Selangor. This business sells product call Crispy Choco Tub and well-known product in 21st century. It is because the product is a chocolate-based cereal in a tub. This brand start with the name Crispy Choco Jar because the origin is in the jar and 2 years later, the brand change into Crispy Choco Tub. This business is sole proprietorship and selling product as main activities. This business sells a total of 6 variety of chocotub starting from RM13-RM16. The ingredients use only premium chocolate and selected cereals. The platform that we use to promote this project using Facebook Page. By promoting in Facebook Page, we are using 3 main elements to promote our business which is teaser, copywriting hard sells and copywriting soft sells. Last but not least, our sales report was attaching as a prove of our selling activities. For this project, both of us have bought 5 tubs of Crispy Choco Tub from the stockist and were sold out, bringing the total sales to RM74. As a result, there is no remaining Crispy Choco Tubs stock
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe 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
Mikroplastik pada Saluran Pencernaan Ikan dari Teluk Palabuhanratu, Jawa Barat
No full textLimbah atau sampah yang dihasilkan dari berbagai aktivitas manusia
menimbulkan masalah pencemaran yang serius yaitu persebaran mikroplastik.
Mikroplastik merupakan plastik yang sudah menjadi partikel dan diameternya
berukuran kurang dari 5 mm. Bahaya dari masuknya mikroplastik pada ikan yaitu
menganggu proses-proses pencernaan ataupun menghalangi proses penyerapan pada
ikan. Tujuan penelitian ini adalah untuk identifikasi komposisi mikroplastik yang
terdapat pada ikan. Penelitian ini dilaksanakan pada bulan Oktober 2018 hingga
Februari 2019 di Teluk Palabuhanratu Sukabumi, Jawa Barat. Metode yang
digunakan dalam pengambilan ikan contoh adalah penarikan contoh acak sederhana.
Kelimpahan mikroplastik ditemukan pada saluran pencernaan ikan sebanyak 16381
partikel yang terdiri dari tipe fiber, fragmen, dan film. Mikroplastik yang ditemukan
pada saluran pencernaan ikan didominasi oleh ukuran 101-500 μm
Variations on the Author
Get PDF“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
Get PDFWe 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
Struktur Populasi ikan hiu paus (Rhincodon typus Smith,1828) di Perairan Pesisir Probolinggo Jawa Timur
No full textHiu paus di perairan pesisir Kabupaten Probolinggo muncul secara musiman
dari Desember hingga Mei setiap tahun. Ancaman terhadap hiu paus cukup tinggi
jika tidak dikelola dengan baik. Penelitian ini bertujuan untuk mengidentifikasi
individu dan struktur populasi ikan hiu paus yang muncul serta mengamati
tingkah laku kemunculan untuk pengelolaan pesisir Kabupaten Probolinggo, Jawa
Timur. Observasi lapang dilakasanakan pada bulan Maret dan April 2017 di
Pantai Bentar Probolinggo. Pengumpulan data dilakukan dengan metode
pemotretan sirip dada sebelah kiri dan kelaminnya. Pengamatan dilakukan
minimal oleh 2 orang pada jarak tertentu sehingga aman untuk pengambilan video.
Analisis ID dilakukan dengan menggunakan software I3S. Informasi yang
diperoleh dari pengamatan adalah ID, jenis kelamin, pendugaan ukuran, dan
kondisi keberadaan luka pada tubuh. Ikan hiu paus banyak ditemukan pada
kondisi cuaca cerah, di mana keberadaan hiu paus dipengaruhi kondisi
ketersediaan makanan. Jumlah hiu paus yang teridentifikasi sebanyak 57 individu
didominasi oleh ukuran 2-4 meter, terdiri atas 27 ekor jantan, 22 betina, dan 9
tidak dapat ditentukan. Rasio jenis kelamin jantan terhadap betina 1,22. Tanda
luka yang ditemukan tergolong kecil yaitu sebesar 7% pada individu yang
teridentifikasi. Tingkah laku hiu paus di Pesisir Probolinggo yang ditemukan
masih bersifat liar
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