Response surface methodology

In electro-discharge machining (EDM) with mixing powder, it is called powder mixed electro-discharge machining (PMEDM), then machining performances- i.e. material removal rate (MRR) and tool wear rate (TWR) has great significance in evaluating the effectiveness and machining accuracy of the machining method.

14p vibecca 01-10-2024 2 1   Download

In this study, the extraction of chlorogenic acid from Vietnamese green coffee beans was optimized using the response surface methodology. A second-order polynomial model with three important variables (liquid-to-solid ratio, temperature, and extraction time) was used.

11p vibecca 01-10-2024 2 2   Download

In Vietnam, a tea-producing country, the tea buds and top three leaves are normally used for tea production while older leaves are pruned and discarded as agricultural waste in the winter. The present study aimed to exploit catechins from pruned tea leaves and use them as natural antioxidants for applications in the food industry.

12p vibecca 01-10-2024 4 2   Download

The purpose of this study was to find the optimal conditions for extracting polyphenols from Vietnamese tropical almond leaves (Terminalia catappa L.) and to assess the anti-diabetic activities of the resulting extract. The polyphenol extraction from Vietnamese tropical almond leaves was optimized using the response surface methodology.

12p vibecca 01-10-2024 3 2   Download

Avocado peel has been considered as a potential source of natural antioxidants in which phenolics are among the most important compounds. Therefore, this study aims to optimize the extraction process of phenolics using response surface methodology and evaluate the corresponding antioxidant activity.

11p vifaye 20-09-2024 2 1   Download

Treating dredged sediment is a complex processing and ongoing challenge. To utilize dredged sediment for the landfill or construction purposes, a material fabricated from a mixture of dredged sediment, Portland cement, and fly ash, was cured under room temperature and hydrothermal condition at 180 °C and 0.9 MPa pressure for 16 hours. The response surface methodology was used to evaluate the compressive strength of the material, with the range of factors investigated being the dredged sediments/solid ratio (0.3 - 0.9), cement/fly ash ratio (2 - 4), and water/solid ratio (0.45 - 0.55).

13p xuanphongdacy06 18-09-2024 3 1   Download

The effect of machining parameters on the surface roughness in dry-turning Ti6Al4V alloy using an experimental design method was investigated. A mathematical equation based on the response surface methodology was established to fully understand the influence of machining parameters (cutting speed, feed rate, and depth of cut) on the surface roughness.

9p viwarmachine 01-07-2023 11 3   Download

Waste from Jackfruit has little economic value and often causes serious environmental problems. The conversion of jackfruit waste will help reduce waste treatment costs, provide a potential source of raw materials for the activated carbon (AC) and increase economic value. In this study, the ACs from the Jackfruit shell and pulp were synthesized by microwave assistance for removing organic dyes.

13p vidoctorstrange 06-05-2023 10 2   Download

Optimization techniques predict the conditions required to increase the efficacy of azo dyes degradation by microbial sources and also decrease the number of experimental runs to achieve the maximum percentage of degradation. Interaction of variables such as medium components and process parameters can be determined using optimization tools.

8p mudbound 10-12-2021 8 2   Download

Response surface methodology was applied to optimize the extraction of phenolic compounds from fresh Pouzolzia zeylanica plant using hot water as a solvent. A central composite design (CCD) in form (23+star) was used to investigate the effects of two independent variables, namely, extraction temperature (70 to 90oC) and extraction time (20 to 40 min).

10p larachdumlanat129 19-01-2021 19 2   Download

Deproteinated cheese whey was used for biomass production of probiotic strain Lactobacillus helveticus MTCC 5463 in a biofermenter. Optimization of growth parameters such as temperature, pH and time of incubation as well as nutrient supplementation of cheese whey was carried out using response surface methodology (RSM). Cheese whey supplemented with 0.95% yeast extract and 0.95% proteose peptone, inoculated with 6% (v/v) active culture of L. helveticus MTCC 5463 and fermented for 24 h at optimized temperature of 40ºC and pH 6.25 yielded 3.25 g/L dry cell biomass and 14.

14p chauchaungayxua6 26-06-2020 25 3   Download

This study aimed to optimize additional carrier concentration for spray drying of Pouzolzia zeylanica extract. Response Surface Methodology (RSM) with central composite design (CCD) was applied for optimization and investigation of the influence of maltodextrin (5ö15%, w/v) and carrageenan gum (0.06ö1.0%, w/v) concentration on the physicochemical characteristics of spray dried powder (bioactive compounds, moisture content as well as particle size distribution).

9p tomhiddleston 27-05-2020 21 2   Download

In this study, in-vitro experiments were performed using a total of 24 porcine motion segments. The harvested specimens were assigned to prolong and 2 different cyclic loadings. Both disc deformations and water contents were measured to investigate how the mode and rate of loading affect the response of intervertebral disc.

8p tohitohi 19-05-2020 8 1   Download

Natural precious products such as aroma compounds, essential oils, and bio-activated materials are usually extracted from about 30,000 botanical species. These extracts are often high competitive market due to their small content (less than 1 %) in plants and high purification cost. Thus, development of a modeling for the optimization of the crude oil extraction is highly paid attention. In this work, a modeling of Vietnam lemongrass oil extraction using steam distillation is developed and the optimization of the process parameters is performed using response surface methodology (RSM).

6p abcxyz123_02 03-03-2020 31 2   Download

In this study, the effect of extraction conditions on the antioxidant activity of Vernonia amygdalina Del. (Asteraceae) was evaluated by Response surface methodology and central composite design (RSM-CCD) to predict the content of phenolic compounds with maximum antioxidant activity.

10p quilen 30-11-2019 23 2   Download

Phương pháp đáp ứng bề mặt (Response Surface Methodology - RSM) được sử dụng hiệu quả để tối ưu hóa các điều kiện của quá trình phản ứng xà phòng hóa (nồng độ dung dịch kiềm (%), nhiệt độ (oC) và thời gian phản ứng (giờ)). Độ tạo bọt và thời gian bền nhũ từ sản phẩm của phản ứng xà phòng hóa là 2 yếu tố đáp ứng để đánh giá quá trình tối ưu bằng RSM.

7p vihercules2711 26-03-2019 163 5   Download

Collagen của da cá hồi đã được tách chiết bằng phương pháp hóa học. Dung môi tách chiết là axit axetic. Hàm mục tiêu của các thí nghiệm tách chiết là độ nhớt – đo bằng nhớt kế OSVAL. Điều kiện của quá trình tách chiết được tối ưu hóa bằng phương pháp bề mặt đáp ứng (Response Surface Methodology).

10p quaymax4 05-09-2018 104 5   Download

Seed of rambutan as a waste of products from the canned fruit industry and was extracted by supercritical carbon dioxide (ScCO2) using CO2 as a solvent, maceration and soxhlet extraction using ethanol as the solvent,... Invite you to consult the documentation

4p cnguyena1 25-03-2018 62 1   Download

The optimum conditions obtained from response surface analysis was 4.99 g/100 g moisture, 1.05 mm particle size and 9.2 h extraction time. Under these optimum conditions, the maximum fat yield was 37.35 g/100 g. The extracted fat was a white solid at room temperature. The physical and chemical characteristics of the extracted fat compared well with those of conventional fats,...Invite you to consult the documentation.

6p cnguyena1 25-03-2018 41 1   Download

(BQ) In this paper, attempts have been made to model and optimize process parameters in Electro-Discharge Machining (EDM) of tungsten carbide-cobalt composite (Iso grade: K10) using cylindrical copper tool electrodes in planing machining mode based on statistical techniques.

6p xuanphuongdhts 27-03-2017 34 2   Download