52 articles for “Factorial Design”

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Research ArticleOpen accessPhrase in the titleOptimization of Biodiesel Production from Spent Palm Cooking Oil Using Fractional Factorial Design Combined with the Response Surface MethodologyS.M. Zakir Hossain, Nahid Sultana, Muhammad Faisal Irfan et al.Fractional Factorial Design (FFD) of the experiments combined with the response surface methodology was used to determine the optimum conditions for the production of biodiesel from Used Cooking Oil (UCO) in a batch reactor. Spent palm olein cooking oil was used as a raw material for biodiesel production as it is commonly used in most of the restaurants in Bahrain. … …American Journal of Applied Sciences, Vol. 13, Issue 11 · 22 Nov 2016 · 8,443 accessesView PDF Cite

Research ArticleOpen accessPhrase in the titleA COMPARISON BETWEEN CLASSICAL AND ROBUST METHOD IN A FACTORIAL DESIGN IN THE PRESENCE OF OUTLIERAnwar Fitrianto, Habshah MidiAnalysis of Variance (ANOVA) techniques which is based on classical Least Squares (LS) method requires several assumptions, such as normality, constant variances and independency. Those assumptions can be violated due to several causes, such as the presence of an outlying observation. There are many evident in literatures that the LS estimate is easily affected by outliers. To remedy this problem, … …Journal of Mathematics and Statistics, Vol. 9, Issue 3 · 11 Jul 2013 · 7,503 accessesView PDF Cite

Research ArticleOpen accessIn the keywordsIMPROVED PREDICTION FOR MEDIUM OPTIMIZATION USING FACTORIAL SCREENING FOR DOCOSAHEXAENOIC ACID PRODUCTION BY SCHIZOCHYTRIUM SP. SW1Vidyah Manikan, Mohd Sahaid Kalil, Mohd Hafez Mohd Isa, Aidil Abdul HamidDocosa Hexaenoic Acid (DHA) is an essential fatty acid that plays major role in human health. It is typically extracted from fatty fish and this puts pressure on global fish stock. DHA obtained from fish is also prone to contamination. Schizochytrium is a potential alternative source, having the ability of accumulating considerable amounts of DHA. Modification of medium components and … …American Journal of Applied Sciences, Vol. 11, Issue 3 · 15 Jan 2014 · 7,837 accessesView PDF Cite

Research ArticleOpen accessIn the abstractSynergistic Effects of Wheat Bran and Inoculants on Fermentation and Nutritional Quality of Soybean Straw SilageLie Yang, Rundong Qin, Jiahuan Liu et al.The efficient valorisation of lignocellulosic biomass from soybean straw into high-quality silage remains a pressing challenge for sustainable livestock production. This study employed a 3×3 factorial design to systematically investigate the interactive effects between wheat bran additions (0%, 10%, 20% of fresh weight) and microbial inoculant regimes (control, Effective Microorganisms, EM+Trichoderma longibrachiatum) on soybean straw silage quality. Two-way ANOVA revealed … …American Journal of Biochemistry and Biotechnology, Vol. 22, Issue 2 · 1 Jul 2026 · 1,109 accessesView PDF Cite

Research ArticleOpen accessIn the abstractEffect of Bokashi and Water Deficiency on the Growth of Kailan (Brassica Oleracea Var. Acephala) in East Nusa Tenggara, IndonesiaLaurensius Lehar, Suryawati, Tri Luchi Proklamita et al.Water scarcity poses a critical challenge to vegetable production in semi-arid regions such as East Nusa Tenggara, Indonesia, where sustainable soil amendment strategies are essential for maintaining crop productivity. This study investigated the interaction between water stress and coconut coir charcoal bokashi application on the growth and yield of kailan (Brassica oleracea var. alboglabra). The experiment was conducted at the … …OnLine Journal of Biological Sciences, Vol. 26, Issue 1 · 31 Mar 2026 · 1,263 accessesView PDF Cite

Research ArticleOpen accessIn the abstractEfficacy of Murraya paniculata Leaf Flour in Reducing Subclinical Mastitis in Dairy Goats Fed Date Pulp-Based DietsDwierra Evvyernie, Endah Yuniarti, Rika Zahera, Anuraga JayanegaraSubclinical mastitis is a major concern in dairy production, leading to economic losses and antibiotic dependence, which poses risks of milk residue contamination. As a natural alternative, orange jasmine (Murraya paniculata) leaves, rich in flavonoids, exhibit antimicrobial and anti-inflammatory properties. This study investigated the effects of incorporating date pulp and orange jasmine leaf flour (OLF) into the diets of lactating … …American Journal of Animal and Veterinary Sciences, Vol. 20, Issue 4 · 21 Feb 2026 · 1,590 accessesView PDF Cite

Research ArticleOpen accessIn the abstractEnhancing Sweet Corn Growth and Yield through the Integrated Application of Bioneensis Biofertilizer and Rice Husk BiocharSumihar Hutapea, Saipul Sihotang, Adi Fathul Qohar et al.Sweet corn is an essential agricultural product in Indonesia and contributes to national food security. Consequently, numerous strategies can be implemented to increase the yield of sweet corn, such as intensified fertilization. While organic fertilizers like biofertilizers and biochar have shown potential to enhance crop growth, their combined effects on sweet corn, particularly under Indonesian conditions, are understudied. This study … …OnLine Journal of Biological Sciences, Vol. 25, Issue 4 · 6 Feb 2026 · 1,929 accessesView PDF Cite

Research ArticleOpen accessIn the abstractEnhanced Immunity of Hybrid Grouper (Epinephelus sp.) Against Viral Nervous Necrosis Using a Recombinant Protein Nanovaccine from Chlorella VulgarisUun Yanuhar, Herly Evanuarini, Heru Suryanto et al.Hybrid Grouper (Epinephelus sp.) is an important export commodity in marine aquaculture, yet Viral Nervous Necrosis (VNN) remains a major threat. Nanovaccines are a type of vaccine developed by combining vaccine ingredients with silver nanoparticles and recombinant protein from Chlorella vulgaris. These formulations are designed to effectively boost the body's immune system response to prevent disease infection and destroy pathogenic … …OnLine Journal of Biological Sciences, Vol. 25, Issue 3 · 22 Nov 2025 · 2,154 accessesView PDF Cite

Research ArticleOpen accessIn the abstractCombination of Organic, Chemical and Biological Fertilizers to Accelerate Mangrove Growth on the East Coast of Sumatra, IndonesiaBudi Utomo, Yuda Ilham Ramadhan, Yunasfi et al.Efforts to rehabilitate mangroves often do not yield satisfactory planting results. Low maintenance measures due to the tidal situation of the area make it difficult for rehabilitation actors to carry out fertilization and insertion. This study aims to increase the growth of Rhizophora mucronata with fertilization treatment during planting with various biological fertilizers. The study was designed using a completely … …OnLine Journal of Biological Sciences, Vol. 25, Issue 3 · 24 Oct 2025 · 2,498 accessesView PDF Cite

Research ArticleOpen accessIn the abstractYield and Nutritional Value of Oats Associated With Vicia in High Andean Conditions of Puno, PeruMarcial Enciso Altamirano, Jimny Nuñez Delgado, Alexandrina Sotelo Méndez et al.The objective of the study was to determine the yield (Kg/ha) and nutritional value of the associated cultivation of oats (Avena sativa) and vicia (Vicia sativa) using different varieties and sowing proportions in high Andean conditions in the Puno region. Three oat varieties were selected: Tayko, Africana and Vilcanota I, and were sown in association with vicia in two proportions: … …OnLine Journal of Biological Sciences, Vol. 25, Issue 3 · 1 Sep 2025 · 5,471 accessesView PDF Cite