Existing methods for rice field classification have some limitations due to the large variety of land covers attributed to rice fields. This study used temporal variance analysis of daily Moderate Resolution Imaging Spectroradiometer (MODIS) satellite images to discriminate rice fields from other land uses. The classification result was then compared with the reference data. Regression analysis showed that regency and district comparisons produced coefficients of determination (R 2 ) of 0.97490 and 0.92298, whereas the root mean square errors (RMSEs) were 1570.70 and 551.36 ha, respectively. The overall accuracy of the method in this study was 87.91%, with commission and omission errors of 35.45% and 17.68%, respectively. Kappa analysis showed strong agreement between the results of the analysis of the MODIS data using the method developed in this study and the reference data, with a kappa coefficient value of 0.8371. The results of this study indicated that the algorithm for variance analysis of multitemporal MODIS images could potentially be applied for rice field mapping.
Penelitian ini bertujuan untuk mengetahui pengaruh level energi dan protein ransum terhadap penampilanayam kampung umur 0-10 minggu. Penelitian ini menggunakan rancangan acak lengkap (RAL) dengan empatperlakuan dan empat ulangan, setiap ulangan terdiri dari 3 ekor ayam. Ayam kampung yang digunakan tanpamembedakan jenis kelamin. Perlakuan yang diberikan adalah A: energi 3100 kkal/kg dan protein 22%; B: energi3000 kkal/kg dan protein 20%; C: energi 2900 kkal /kg dan protein 18%; dan D: energi 2800 kkal /kg dan protein16%. Varabel yang diamati adalah: berat badan awal, berat badan akhir, pertambahan berat badan, konsumsiransum, feed convertion ratio (FCR), kecernaan pakan, neraca energi, neraca protein, kebutuhan protein danenergi untuk hidup pokok dan pertumbuhan. Hasil penelitian menunjukkan bahwa pengaruh perlakuan energi3100 kkal dan 22% protein berbeda nyata lebih baik (P<0,05) untuk pertumbuhan dan untuk neraca protein danenergi dibanding perlakuan; level energi 3000 kkal dan 18 % protein; dan level energi 2900 kkal dan 16% protein.Dapat disimpulkan bahwa pertumbuhan ayam kampung yang mendapat energi-protein yang lebih tinggi lebih baikdaripada ayam kampung yang mendapat ransum dengan energi dan protein yang lebih rendah. Kebutuhan energiuntuk hidup pokok pada ayam kampung umur 0-10 minggu adalah 95,88 W 0,75 kkal/hari dan kebutuhan proteinuntuk hidup pokok sebesar 2,91 g/W0,75/hari. Kebutuhan energi untuk pertumbuhan adalah 2,73 kkal per satugram kenaikan berat badan, sedangkan kebutuhan protein untuk pertumbuhan adalah 0,31 protein setiap kenaikan1 g berat badan.
Penelitian ditujukan untuk menghitung kebutuhan energi dan protein untuk hidup pokok dan untuk pertumbuhan pada ayam kampung umur 10-20 minggu. Sembilan puluh enam ekor ayam kampung umur 10 minggu yang dibagi dalam 4 kelompok perlakuan yaitu ayam yang diberikan ransum mengandung 3100 k.kal ME/kg dan 22% protein (perlakuan A), ransum yang mengandung 3000 K.kal ME/kg dan 20% protein (perlakuan B), ransum yang mengandung 2900 K.kal ME/kg dan 18% protein (perlakuan C) dan ransum yang mengandung 2800 K.kal ME/kg dan 16% protein (perlakuan D). Penelitian menggunakan Rancangan Acak Lengkap (RAL) dengan 4 perlakuan dan 4 ulangan. Hasil penelitian ini mendapatkan bahwa kebutuhan energi untuk hidup pokok pada ayam kampung adalah: 138,77 W0,75 kcal/hari (W: berat badan ayam dalam kg), sedangkan kebutuhan protein untuk hidup pokok pada penelitian ini adalah 7,8 g/W0,75/hari. Kebutuhan energi untuk pertumbuhan atau kenaikan berat badan diperoleh 3,3 K.cal/1g kenaikan berat badan sedangkan kebutuhan protein untuk pertumbuhan adalah: 0,33 g protein setiap kenaikan 1g kenaikan berat badan.
This study was intended to determine the free testosterone levels and sperm quality of local rabbit that was given commercial feed supplemented cod fish liver oil. The experiment design that was used in this research was Complete Random Design (CRD) with four experiments of feed, i.e. commercial feed without cod fish liver oil (R-0) as control, commercial feed + 1,5% cod fish liver oil (R-1), commercial feed + cod fish liver oil 3% (R-2), commercial feed + cod fish liver oil 4,5% (R-3). The each experiment included eight rabbits and feed experiment was given starting by 13 weeks to 26 weeks years old. The variable that observed was free testosterone level and sperm quality of local rabbit. The data that was obtained to be analyzed with One Way Anova and if its contrast was done more test with Duncan's Multiple Range Test (DMRT). The result of this research was to show that supplementation of cod fish liver oil in commercial feed was to show the result that a real distinction of (P<0, 05) towards free testosterone level and sperm quality of local rabbit.
The textile industry is growing rapidly and as the result it’s producing waste that can harm the environment. One of which is rhodamine B. Rhodamine B is a synthetics dyes that have a form crystalline which an organic base containing amino groups, so it is difficult to degrade naturally by microorganism. Biofiltration system method is one of many ways in handling wastewater. Layered filtration unit of sand and rocks combine with the adsorption of plant and decomposition by microorganisms in rhizosphere so that wastewater can be reused. The aim of this study determined effectiveness and capacity of biofiltration system vegetation in reducing concentrate of rhodamine-B, total dissolved solid (TDS), total suspended solid (TSS) and the pH in wastewater. The result showed that biofiltration effectiveness in reducing rhodamine B, TDS and TSS concetrate were 51,70%; 47,60%; 50,44% while decreasing and stabilization of pH obtained at 30 hours treatment time with pH value is 7,5. Capacity of biofiltration system vegetation with volume 0,06 m3 can reduced rhodamine B, TDS and TSS by 0,2256 ppm; 278,0237 ppm and 9,4978 ppm respectively, while the optimum detention time of wastewater in the biosystem for reducing rhodamine B was 30 hours and for TSS and TDS was 36 hours. It can be concluded that biofiltration system vegetation was able to reduce rhodamine B, TDS, TSS and pH of wastewater
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