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Showing 1 to 20 of 22 for “"response surface design"”.
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Response Surface Design and Analysis in the Presence of Restricted Randomization
… costly-to-change factors. Employing a split-plot design structure minimizes the number of required experimental settings for the hard-to-change factors. In this research, we propose classes of equivalent estimation second-order response surface split-plot designs for which the ordinary least …
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Competitive interactions and community influences among invasive and native fishes at different spatial scales
… carpio). In the first experiment, I used a response surface design to independently vary the densities of bighead carp and bluegill in mesocosms. This design allowed for the investigation of inter- and intra-specific competitive interactions for both species, as well as the influences of the …
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Optimal experimental designs for estimating the slope of a response surface
Optimality criteria for the selection of a response surface design have been presented by many authors. For the most part these criteria have led to optimal designs for predicting response. In many applications of response surface methodology, however, the primary experimental objective can best be …
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Experimental design issues in impaired reproduction applications
… and more common, yet methods for efficiently designing experiments for these studies have received little attention. In this research, response surface design criteria are applied to four models for impaired reproduction data. The important role of control observations in impairment studies is …
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Analysis and design of composite curved frames
In this work, methods for rapid analysis and design of composite curved C-section frames subjected to axial tensile loading are developed. Failure is predicted using polynomial in-plane and interlaminar failure criteria. Interlaminar stresses can be directly computed only from three-dimensional …
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Neural networks as a tool for statistical modeling
… the SHLFNN is being used more frequently is in response surface modeling based on designed experiments. Due to the small sample sizes typically employed by response surface designs, the ability of the SHLFNN to accurately approximate the underlying model is questionable. The results of a …
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Size-structured competition and predation in red-eyed treefrog tadpoles
… proportion of large and hatchling tadpoles in a response surface design and quantified growth. We then observed the effect of a dragonfly larvae predator (Anax amazili) on tadpole growth and survival at different size-structured treatments. Large tadpoles were greater per individual competitors …
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Fate of Omega-3 Fatty Acids from Algae in Mozzarella Cheese
… combination of those tested was found, using a response surface design, to be 3% algal oil with 110ppm mixed tocopherols for maximum DHA and minimum oxidation over 2 weeks. This algal oil/antioxidant combination in mozzarella cheese successfully prevented oxidation and DHA degradation over 3 …
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An Investigation of Copper Recovery from a Sulphide-Oxide Ore with a Mixed Collector System
… and xanthate respectively. A Box-Behnken response surface design was used to determine collector dosages that provide an optimum flotation response for the natural ore. The collectors were: potassium amyl xanthate (PAX), Cytec Promoter 6494 hydroxamate and DETA. The copper recovery, …
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Lysozyme Separation from Tobacco Extract by Aqueous Two-Phase Extraction
… respectively. Two level fractional factorial designs were used to study the effects of factors such as PEG molecular weight, PEG concentration, the concentration of phase forming salt, sodium chloride concentration, and pH on protein partitioning. The results showed that PEG/sodium sulfate …
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Constant current electronarcosis of market poultry
… turkeys. A prototype constant current stunner designed at the Department of Electrical Engineering of Virginia Polytechnic Institute and State University was used. Broilers were electrically stunned with 8, 29 and 50 mA per bird. Turkeys were electrically stunned with 10, 30 and 50 mA per bird. …
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Phycoremediation of wet market wastewater using microalgae scenedesmus sp. For biomass production
… established by using statistical analysis by response surface design (RSM) in terms of biomass productivity with 6% error for the validation experiment with the value of biomass production of 68.32 mg/L/d. Besides that, the total protein and lipid content in the biomass yield produced in WMW …
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Second-order sub-array Cartesian product split-plot design
… (1926) laid down the fundamental principles of design of experiments: factorization, replication, randomization, and local control of error. In industrial experiments, however, departure from these principles is commonplace. Many industrial experiments involve situations in which complete …
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Varying rumen available carbohydrate and rumen available protein in diets of lactating cattle
… in lactating cows. The first study was a response surface design utilizing nine dietary combinations of RAC and RAP. The response surfaces of all milk variables were saddle-shaped. Because of the saddle-shaped surfaces, an optimum combination of RAP and RAC for milk production variables …
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Part I: Effect of Nanomicelle Size on Trans-scleral Permeability of Dexamethasone and Part II: Strategies to Minimize Octreotide Acylation during Sustained Release from Biodegradable Polymers
… micelle core, an exploratory 2-factors 3-level response surface methodology was generated using SAS 9.02 (exploratory model). The independent factors were polymer amount (X1) and DEX amount (X2). Solubility of DEX in micelle solution was taken as response variable (Y). Micelle preparation method …
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Intake, growth and rate of digesta passage in ruminating calves fed sodium bicarbonate and disodium phosphate
A five point radial response surface design supplemented with a control group and several single factor points was utilized to investigate the effects of sodium bicarbonate and disodium phosphate on animal performance, ruminal fermentation, ration digestibility and rate of passage of liquid and …
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Insects as a Sustainable Food Ingredient – Utilization of Carrot Pomace, Identification of Early Adopters, and Evaluation of Mealworm Acceptability
… mealworms with early adopters.</p> <p>A response surface design was used to evaluate the use of carrot pomace in various percentages in the substrate and as the moisture source in a mealworm growing system. Mealworms were grown under controlled conditions in a climate chamber until they …
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High performance damper optimization using computer simulation and design of experiments
Design of experiments has become an increasingly popular tool used by racing teams in professional motorsports. A race car has literally hundreds of adjustable parameters associated with it. Specialized racing engineers are in a constant search to find the optimal combination of settings for these …
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Reduction of Pink Color Development in Cooked,Uncured Ground Turkey Breast by the Addition of Dairy Proteins
… dry milk at various levels. A simplex lattice response surface design enabled prediction of these proteins' effects on red color at combinations of up to and including 3.0% added dairy protein. Sodium nitrate did not appear to increase redness of control samples and therefore was not discussed …
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Optimisation of quality and nutritional value of reformed/restructured meat products for older adults developed using plant proteins
… in the beef pattie formulation using a mixture design approach. An optimised formulation was predicted consisting of; (LF; 6.22% and 6.05%) and (RP; 3.63% and 3.95%). An optimised beef pattie formulation with enhanced protein and acceptable textural parameters was produced. Sensory analysis …
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