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| Registros recuperados: 1.540 | |
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| Azimi Mahalleh, Afsaneh; Sharayei, Parvin; Mortazavi, Seyed Ali; Azarpazhooh, Elham; Niazmand, Razieh. |
| Pulsed electric field (PEF) treatment was used for extracting effective components from Nepeta (Nepeta binaludensis Jamzad). A response surface method was used to investigate the effects of independent process variables (voltage of pulsed electric field (VPEF): 2, 4 and 6 KV/cm and number of pulsed electric field (NPEF): 20, 40 and 60 n) on the yield (Y) and antioxidant characteristics: total phenolic compounds (TPC), 1,1- diphenyl -2- picrylhydrazyl free radical scavenging (DPPHsc), ferric reducing-antioxidant power (FRAP), half maximal of radical-scavenging activity (IC50) of Nepeta extract (aerial parts). According to Derringer’s desired function approach, the optimal conditions based on both individual and combinations of all process variables were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phenolic compounds; Nepeta binaludensis; Response Surface Methodology; Pulsed electric field; Antimicrobial activity. |
| Ano: 2019 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5391 |
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| Flores, Edgar Dulay. |
| The study determined the postproduction handling systems, losses and the needed intervention to improve the fresh sweet potato chain. Surveys were conducted among 350 sweet potato farmers in four major sweet potato producing provinces supplemented by the key informant interviews, focus group discussion and on-line search of secondary data. Actual loss assessments were undertaken adapting the tracing method and following two commercial marketing channels replicated 6 times for each marketing channel. The total average postharvest loss was 32.09 percent. Among the postproduction operations, quantity losses during harvesting were the highest at 15.96 and 17.94 percent for Bataan and Tarlac, respectively. Along the fresh sweet potato market chain, the farmer... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2018 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4233 |
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| Nils Bjugstad; Petter Hermansen. |
| The pesticide exposure of the operator during the spraying application in strawberry and raspberry was measured due to a tunnel or conventional ’open field’ cultivating system. A quick and easy passive sampling method was developed consisting of the use of transparent overhead sheets cut to a 10 x 10 cm2 WHO-standard size. The operator exposure when carrying out the spraying application was mainly significantly higher for a tunnel system compared with the conventional open field system for strawberry as well as raspberry. However, the drift of pesticide to the environment is expected to be higher for an open field system. This is due to the documented higher influence of the wind vector in an open area. Additionally, the operator exposure is more dependent... |
| Ano: 2009 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/1049 |
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| Francesco Barreca; Mediterranean University of Reggio Calabria, Faculty of Agricultural Sciences. |
| One of the most common causes of accidents in food industry buildings is slipping caused, in particular, by the spilling of liquid substances on the floor, which reduces the coefficient of friction between floor and sole. The aim of this study was to assess the performance of the most common types of flooring used in the food industry, where, owing to the characteristics of the manufacturing stages, the probability of liquid spilling is higher. Five different types of flooring, usually utilized in the food industry, were tested: two unglazed gres tiles and three resin floors. The tiles were different in surface shape: one was flat (gres A), the other was a tile with embossed surface (gres B). The surface of the resin used was made up of a three-component... |
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Palavras-chave: AGRI FOOD BUILDING DESIGN Floor; Slip; Worker safety; Food industry buildings; Dynamic Friction Coefficient. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3209 |
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| najafi, payam; marzban, afshin; hormozi, mohammad ali. |
| Evaluation of maintenance strategies is an issue which must widely be considered. This paper describes failure rate, mean time between failures (MTBF) and availability analysis for Austoft 7000 sugarcane harvesters series used in agro-industries in southwestern Iran. Sugarcane harvester was divided into three subsystems and the failures were studied for 1800 working hours. The failure rate of subsystems including hydraulic, mechanical and electrical were calculated 0.087, 0.052 and 0.012 h-1, respectively and the total failure rate was 0.15 h-1. MTBF after 1800 working hours were obtained 11.46 h, 19.35 h and 85.71 h for the aforementioned subsystems and machine MTBF was 6.64 h. Among the three studied subsystems, hydraulic with maximum failure rate and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Availability; Failure rate; MTBF; Sugarcane harvester. |
| Ano: 2015 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3101 |
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| Ekaputra, Eri Gas; Irsyad, Fadli; Yanti, Delvi. |
| Soil water conservation with how water infiltration through recharge wells is very important considering the land use changes in the earth's surface as a consequence of the growth in population and economy, society, decrease the rate of erosion runoff will decline. If the surface flow decreased, soils eroded and drift would be reduced. The impact of rainwater runoff and erosion too small to be small. This research was conducted in June to August 2016 in West Pasaman PTPN VI. This study aims to determine the number of recharge wells, dimensions, distribution of recharge wells and reduce the volume of runoff that occurs. This research was conducted through the following steps: (1) Analysis of Intensity Rain, (2) Determination of the coefficient of runoff,... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2020 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5913 |
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| YUNUSA, SULEIMAN USMAN. |
| An improved natural-draft double burner biomass cookstove was developed. The study became imperative to minimize the increasing rate of deforestation, harmful gas accumulation as well as excessive fuel consumption and heat loss experienced in the use of the inefficient and traditional cooking method. The study was conducted in the Department of Agricultural and Bio-resources Engineering, Ahmadu Bello University, Zaria, Nigeria. The cookstove was designed based on performance, affordability, and usability, and it was constructed purely from locally available materials. Stainless steel was used to construct the stove cladding; it possesses lesser thermal conductivity of 14.9 W/mk as compared to aluminum and mild steel which have 174.6 W/mk and 80.2 W/mk,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biomass; Cookstove; Traditional; Improved; Natural-draft. |
| Ano: 2022 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/7279 |
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| Obajemihi, Obafemi Ibitayo; Asipa, Adeola Akorede. |
| The aim of this study was to investigate the effect of osmotic dehydration on effective moisture diffusivity and rehydration characteristics of osmo-air dehydrated tomato. Sliced tomato samples of Hausa variety of uniform 10 mm thickness were deseeded, blanched at 90oC and immersed in an honey and sugar hypertonic solution under different levels of osmotic concentrations of 20, 30, 40, 50 and 60oBx, temperature of 10, 20, 30, 40 and 50oC and duration of 10, 20, 30, 40, and 50 min. Samples were dried in a hot-air cabinet dryer at 65oC for 10 hours to reach an equilibrium moisture content of 3-5%, which is considered safe for long term storage. The experiment was designed using central composite design (CCD) of response surface methodology (RSM) of Design... |
| Tipo: Info:eu-repo/semantics/article |
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| Ano: 2020 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5887 |
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| Kaur, Kulwinder; Kumar, Satish; Alam, Mohammad Shafiq. |
| The study on osmotic pretreatment of oyster mushrooms was carried out in order to remove the moisture prior to further mechanical drying. Three salt concentration level (10, 15 and 20 g/100 g), two temperature levels of osmotic solution (30 and 45°C) and constant solution to mushroom ratio of 10 (w/v) were selected and the observations on water loss and solid gain were taken at an interval of 30 min up to 300 min. The osmotically pretreated samples were further dried up to its equilibrium moisture content in a tray drier at 60°C and experimental data were fitted successfully using Page and Henderson & Pabis model. The osmo-convective dehydrated samples were evaluated for its quality parameters i.e. color (L, a, b, ∆E, C* and h°), rehydration ratio... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oyster mushrooms; Osmotic dehydration; Water loss; Solid gain; Drying; Quality. |
| Ano: 2014 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2831 |
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| charee, singrun; Sudajan, Somposh; Junsiri, Chaiyan; Laloon, Kittipong; Oupathum, Chanin. |
| The objective of this study was to determine the effects of moisture content and blade cutting speed on the chopping and size distribution of sugarcane leaves. The experiments were conducted using 4 different moisture content percentages of 19.74, 30.97, 44.52 and 50.12 % w.b. and at the blade cutting speeds of 380, 630 and 880 rpm. The results revealed that moisture content and blade cutting speed significantly affected working capacity, weight and geometric mean particle length of the sugarcane leaves, and the results were statistically significant with confidence levels of 95%. The interaction of the two factors had a significant effect on the working capacity but did not affect the percent weight and geometric mean particle length of the sugarcane... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sugarcane leaves; Chopper; Size distribution; Fuel biomass. |
| Ano: 2021 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/6351 |
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| Sadin, Rasool; Chegini, Gholamreza; Khodadadi, Mehdi. |
| In this study tomato slices were dried with three thicknesses (3, 5 and 7 mm), three temperatures (60°C, 70°Cand 80°C) and air speed of 1.1 ms-1 in a combined infrared-hot air dryer. Distance from infrared source was 70 cm, while, input air temperature was 60°C. The experiment was conducted as factorial based on a completely randomized design. Results showed that energy consumption reduced along with the increase in temperature and slice thickness. Decrease in the slice thickness from 7 to 3 mm resulted in a significant decrease in drying time. Maximum diffusion coefficient was related to the thickness of 7 mm and the temperature of 80°C, while, the minimum value was related to the thickness of 3 mm and the temperature of 60°C. Effective diffusion... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Drying time of tomato; Diffusion coefficient; Effective diffusion coefficient; Activation energy; Tomato thin-layer drying; Infrared-hot air dryer. |
| Ano: 2017 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3780 |
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| KUMAR, VISHAL. |
| The production of high-quality Osmo freeze-dried strawberry slices was studied by response surface methodology. The osmotic treatment and experiment were conducted according to Box-Bohnken Design. The low and high levels of the process variables were 40% (w/w) and 60% (w/w) for sucrose concentration of osmotic solution; 2 and 4 mm for slice thickness and - 10 and -30 0C for operating temperatures in freeze dryer. Responses studied comprised final moisture content (M), colour Index (L), water activity (aw), rehydration ratio (RR) and overall acceptability (Oa). It was found that effects of all the process variables were significant on all responses. Optimum conditions (desirability = 0.692) obtained by numerical optimization were 51% sucrose concentration;... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Osmotic; Freeze; Rehydration; Hardness; Colour; Water activity. |
| Ano: 2020 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5587 |
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| Registros recuperados: 1.540 | |
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