scholarly journals Comparative quality assessment of traditional vs. improved dried Bombay duck ( Harpodon nehereus ) under different storage conditions: Solar chimney dryer a low‐cost improved approach for nutritional dried fish

2021 ◽  
Author(s):  
Biplob Dey Mithun ◽  
Md. Sazedul Hoque ◽  
Martin Louis Van Brakel ◽  
Md. Mahmudul Hasan ◽  
Shaida Akter ◽  
...  
Keyword(s):  
Quality Assessment ◽  
Low Cost ◽  
Storage Conditions ◽  
Solar Chimney ◽  
Dried Fish ◽  
Bombay Duck

scholarly journals Experimental Studies on an Inclined Collector Divergent Chimney Pilot Plant

2021 ◽  
Vol 850 (1) ◽  
pp. 012008
Author(s):  
N Rajamurugu
Keyword(s):  
Renewable Energy ◽  
Fossil Fuels ◽  
Low Cost ◽  
Renewable Energy Sources ◽  
Experimental Studies ◽  
High Mass ◽  
Energy Sources ◽  
Solar Pv ◽  
Solar Chimney ◽  
Energy Agency

Abstract Renewable energy sources become suitable valid options to reduce the dependency on fossil fuels or petroleum products. The International Renewable Energy Agency reports that the world will harvest 40% of energy from renewable energy sources by 2030. Conventional technologies such as solar PV technology, consumes higher capital per unit (kWh) of electricity generation cost significantly higher than the traditional sources. Hence, solar chimney power generation system can be suitable option for generating low cost energy. Solar chimneys are developed and tested by different researchers in enhancing the performance of the system. Studies on the geometric modifications of the collector, and chimney are limited. The aim of this paper is to analyse the experimental data obtained from a divergent solar chimney. Experimentation is carried under sunlight in an open atmosphere. The airflow rates in the chimneys are tested under different collector outlet height. The experimental results showed that a chimney with higher collector openings was performed well than other models. The computational analysis is also carried out using ANSYS Fluent software package which shows that the collector opening of 2.5m is recommended for higher high mass flow rate and system efficiency.

scholarly journals EVALUATION OF PHOTOGRAMMETRIC BLOCK ORIENTATION USING QUALITY DESCRIPTORS FROM STATISTICALLY FILTERED TIE POINTS

2018 ◽  
Vol XLII-2 ◽  
pp. 185-191 ◽  
Author(s):  
A. Calantropio ◽  
M. P. Deseilligny ◽  
F. Rinaudo ◽  
E. Rupnik
Keyword(s):  
Best Practices ◽  
Quality Assessment ◽  
Graphical User Interface ◽  
3D Model ◽  
Low Cost ◽  
Relative Orientation ◽  
Model Reconstruction ◽  
Future Directions ◽  
3D Model Reconstruction ◽  
Data Quality Assessment

Due to the increasing number of low-cost sensors, widely accessible on the market, and because of the supposed granted correctness of the semi-automatic workflow for 3D reconstruction, highly implemented in the recent commercial software, more and more users operate nowadays without following the rigorousness of classical photogrammetric methods. This behaviour often naively leads to 3D products that lacks metric quality assessment. This paper proposes and analyses an approach that gives the users the possibility to preserve the trustworthiness of the metric information inherent in the 3D model, without sacrificing the automation offered by modern photogrammetry software. At the beginning, the importance of Data Quality Assessment is outlined, together with some recall of photogrammetry best practices. With the purpose of guiding the user through a correct pipeline for a certified 3D model reconstruction, an operative workflow is proposed, focusing on the first part of the object reconstruction steps (tie-points extraction, camera calibration, and relative orientation). A new GUI (Graphical User Interface) developed for the open source MicMac suite is then presented, and a sample dataset is used for the evaluation of the photogrammetric block orientation using statistically obtained quality descriptors. The results and the future directions are then presented and discussed.

scholarly journals Organoleptic, physiochemical and microbiological qualities of dried fish, tengra (Mystus tengara) with different levels of salt and turmeric powder

2018 ◽  
Author(s):  
J. K. Jakhar ◽  
H. K. Vardia ◽  
Neelmani Chandravanshi ◽  
Rohit Kumar Painkra ◽  
Shabir Mir ◽  
...  
Keyword(s):  
Low Cost ◽  
Salt Content ◽  
Plate Count ◽  
Human Consumption ◽  
Sensory Assessment ◽  
Salted Fish ◽  
Hot Air ◽  
Dried Fish ◽  
Aerobic Plate Count ◽  
Different Levels

Fresh tengra fish (Mystus tengara) samples were collected from fish market, Kawardha and different levels of salt and turmeric powder were added (0% salt and 0% turmeric powder, T0; 2% salt with 0.2% turmeric, T1; 4% salt with 0.2% turmeric, T2; 8% salt with 0% turmeric powder, T3 and 12% salt with 0% turmeric powder, T4). The processed and salted fish were dried in hot air oven at 60°C for 20 hours. Carcass yield (%), salt content (%), pH and moisture content of cured fish were respectively 39.06 - 43.87%, 3.15 - 4.59%, 6.52- 6.90 and 4.91 – 6.84 %. The sensory assessment showed that treatment T2 had the highest score for texture 5.70; appearance 8.30, odor 8.02 and taste 8.05 while T0 and T1 had least sensory scores. Aerobic plate count of various treatments were found significantly different (p Lass Than 0.05) with the lowest in treatment T4 (3.3 x 103 cfu/g) followed by treatment T2 (3.7 x 103 cfu/g) and highest in treatment T0 (5.4 x 103 cfu/g). Tengra fish cured with 4% salt and 0.2% turmeric powder (T2) found to be the best in yield, microbial load and sensory attributes. The dry salted fish processed with low level of salt and turmeric powder are best for human consumption, particularly for the patients of blood pressure and diabetes.Therefore, preparation of dried products from low-cost fish will help in increasing the employment opportunities and also reduce post-harvest losses.

scholarly journals Optimization and sensitivity analysis of fast ethanol assay in maize seeds

2019 ◽  
Vol 41 (1) ◽  
pp. 97-107 ◽  
Author(s):  
Damrongvudhi Onwimol ◽  
Thunyapuk Rongsangchaicharean ◽  
Pitipong Thobunluepop ◽  
Tanapon Chaisan ◽  
Wanchai Chanprasert
Keyword(s):  
Quality Assessment ◽  
Ethanol Production ◽  
Seed Quality ◽  
Storage Conditions ◽  
Ambient Conditions ◽  
Maize Seed ◽  
Seed Deterioration ◽  
Maize Seeds ◽  
Hermetic Seal

Abstract: The evaluation of seed deterioration is very important to control the quality of the seeds stored. This study aimed to investigate the potential of fast ethanol assay for seed quality assessment of maize stored under different conditions. The first experiment was to determine the incubating temperature, incubating time, and amount of seed used in the assay. The results showed that the best protocol for the detection of headspace ethanol was incubation of 3 g of maize seed with 20% moisture content (wet basis) in a 20 mL gas chromatography vial at 70 °C for 1.5 h. The assay induced approximately 200-700 µg.L-1 of headspace ethanol, which was sufficient to identify seeds with different vigour levels. In the second experiment, the optimal conditions were used for quality assessment in aged maize seed stored for 12 months under different storage conditions. The increase in the ethanol production of stored maize seed under the controlled conditions (15 °C and 20% RH in the hermetic seal) was lower than under ambient conditions. The ethanol production levels of maize seed samples at the start of storage was significantly lesser than at six months storage (p < 0.05). The test limitations in deteriorated seed with different cultivars and ages will be discussed.

Solar Chimney Power Plant Performance for Different Seasons Under Varying Solar Irradiance and Temperature Distribution

2020 ◽  
Vol 143 (6) ◽  
Author(s):  
Ulku Ece Ayli ◽  
Ekin Özgirgin ◽  
Maısarh Tareq
Keyword(s):  
Solar Radiation ◽  
Solar Energy ◽  
Ambient Temperature ◽  
Solar Irradiance ◽  
Power Plants ◽  
Low Cost ◽  
Renewable Energy Sources ◽  
Three Dimensional ◽  
Plant Performance ◽  
Solar Chimney

Abstract One of the most promising renewable energy sources is solar energy due to low cost and low harmful emissions, and from the 1980s, one of the most beneficial applications of solar energy is the utilization of solar chimney power plants (SCPP). Recently, with the advancement in computer technology, the use of computational fluid dynamics (CFD) methodology for studying SCPP has become an extensive, robust, and powerful technique. In light of the above, in this study, numerical simulations of an SCPP through three-dimensional axisymmetric modeling is performed. A numerical model is created using CFD software, and the results are verified with an experimental study from the literature. The amount of solar radiation and surrounding weather (ambient temperature) were analyzed, and the effects of the irradiance and air temperature on the output power of the SCPP were studied. Ambient temperature is considered as one of the most important factors that influence collector efficiency in a negative or a positive manner. Solar irradiance is considered to be the most important factor that has an impact on SCPP performance. The investigation includes the study of the relationship between solar insolation and ambient temperatures during the daytime since the difference between the minimum and maximum power values and the performance are very important considering seasonal changes. According to the results, power values are dependent on the amount of solar radiation as well as the ambient temperature, and the importance of selection of location thus climate for an SCPP is found to affect the design of the SCPP.

Freshness Classification of Horse Mackerels with E-Nose System Using Hybrid Binary Decision Tree Structure

2019 ◽  
Vol 34 (03) ◽  
pp. 2050003
Author(s):  
Selda Güney ◽  
Ayten Atasoy
Keyword(s):  
Decision Tree ◽  
Electronic Nose ◽  
Low Cost ◽  
Storage Conditions ◽  
Tree Structure ◽  
Training Dataset ◽  
Support Vector ◽  
Binary Decision ◽  
Linear Discriminant ◽  
Binary Decision Tree

The aim of this study is to test the freshness of horse mackerels by using a low cost electronic nose system composed of eight different metal oxide sensors. The process of freshness evaluation covers a scala of seven different classes corresponding to 1, 3, 5, 7, 9, 11, and 13 storage days. These seven classes are categorized according to six different classifiers in the proposed binary decision tree structure. Classifiers at each particular node of the tree are individually trained with the training dataset. To increase success in determining the level of fish freshness, one of the k-Nearest Neighbors (k-NN), Support Vector Machines (SVM), Linear Discriminant Analysis (LDA) and Bayes methods is selected for every classifier and the feature spaces change in every node. The significance of this study among the others in the literature is that this proposed decision tree structure has never been applied to determine fish freshness before. Because the freshness of fish is observed under actual market storage conditions, the classification is more difficult. The results show that the electronic nose designed with the proposed decision tree structure is able to determine the freshness of horse mackerels with 85.71% accuracy for the test data obtained one year after the training process. Also, the performances of the proposed methods are compared against conventional methods such as Bayes, k-NN, and LDA.

scholarly journals A Low-Cost pH Sensor Based on RuO2 Resistor Material

Nano Hybrids ◽  
2013 ◽  
Vol 5 ◽  
pp. 1-15 ◽  
Author(s):  
Libu Manjakkal ◽  
Katarina Cvejin ◽  
Jan Kulawik ◽  
Krzysztof Zaraska ◽  
Dorota Szwagierczak
Keyword(s):  
Sensor Networks ◽  
Fresh Water ◽  
Low Cost ◽  
Unit Cost ◽  
Ph Sensor ◽  
Storage Conditions ◽  
Conducting Layer ◽  
Large Area ◽  
Sensing Material ◽  
Safety Of Drinking Water

Fresh water deficiency caused by climate change calls for employing novel measures to ensure safety of drinking water supply. Wireless sensor networks can be used for monitoring hydrological conditions across wide area, allowing flow forecasting and early detection of pollutants. While there are no fundamental technological obstacles to implementation of large area sensor networks, their feasibility is constrained by unit cost of sensing nodes. This paper describes a low-cost pH sensor, intended for use in fresh water monitoring. The sensor was fabricated in a standard thick film process, and an off-the-shelf resistive paste was used as a sensing material. For the fabrication of sensor, RuO2 resistive paste was screen printed on the alumina substrate with silver conducting layer. Test solutions with pH ranging from 2 to 10 were prepared from HCl or KOH solutions. The potential difference between reference and sensing electrode (electromotive force emf of an electrochemical cell) should be proportional to the pH of a solution according to the Nernst equation. The fabricated sensor exhibits Nernstian response to pH. Influence of storage conditions on sensing performance was also investigated.

Potential Application of the Electronic Nose for Quality Assessment of Salmon Fillets Under Various Storage Conditions

2002 ◽  
Vol 67 (1) ◽  
pp. 307-313 ◽  
Author(s):  
W-X. Du ◽  
C-M. Lin ◽  
T. Huang ◽  
J. Kim ◽  
M. Marshall ◽  
...  
Keyword(s):  
Quality Assessment ◽  
Electronic Nose ◽  
Potential Application ◽  
Storage Conditions

scholarly journals Effects of Shell and Low Moisture Content on Peanut Seed Longevity

2002 ◽  
Vol 29 (2) ◽  
pp. 122-125 ◽  
Author(s):  
N. Kameswara Rao ◽  
D. V. S. S. R. Sastry ◽  
P. J. Bramel
Keyword(s):  
Moisture Content ◽  
Low Cost ◽  
Seed Storage ◽  
Cost Effective ◽  
Storage Conditions ◽  
Medium Term ◽  
Short Term ◽  
Effective Strategies ◽  
Arachis Hypogaea L ◽  
High Germination

Abstract Peanut (Arachis hypogaea L.) germplasm accessions in ICRISAT genebank are conserved as pods under medium-term conditions (4 C and 30% RH). Pod storage requires far greater space than seed storage and is more likely to be expensive, especially in a controlled environment. With the objective to evolve cost effective strategies for conservation, the survival of in-shell and shelled seeds of two peanut cultivars, ICGS 76 (virginia bunch) and JL24 (spanish), was studied under three different storage conditions— ambient (20-40 C and 30-80% RH), short term (23-25 C and 40-50% RH), and medium term (4 C and 30% RH). In-shell seeds had marginally greater longevity than shelled seed in all storage conditions. The differences in time for regeneration of in-shell and shelled seeds stored under medium term conditions were estimated to be less than 4 mo for both the cultivars. Because of the much reduced volume required for storage and the insignificant differences in regeneration interval, conservation of shelled seeds would be highly cost-effective under the controlled environmental conditions, as compared to in-shell seeds. Since storage at very low moisture contents was suggested as a simple and low cost option for conservation of seed lots required for short-term use, the longevity of peanut seeds (cv. ICGS 76) hermetically sealed with 3.6% moisture content was studied in comparison with seeds held at 5.8% moisture. The studies showed that peanut seeds hermetically stored at room temperature (23-25 C) with low moisture content (below 4%) could retain high germination (&gt; 85%) for up to 8 yr.

scholarly journals Engineering Educators Pedagogical Training and System of Pedagogical Education Quality Assessment Based on Multi-Criteria Approach

2020 ◽  
Vol 35 ◽  
pp. 08002
Author(s):  
Elena S. Mischenko ◽  
José Carlos Quadrado
Keyword(s):  
Quality Assessment ◽  
Lifelong Learning ◽  
Low Cost ◽  
Educational Programs ◽  
Learning Technologies ◽  
Assessment System ◽  
Education Quality ◽  
Post Graduate ◽  
Pedagogical Training ◽  
E Learning

The EngineeriNg educaTors pEdagogical tRaining (ENTER) project aims at creating a novel multicultural and international approach for formal post-graduate professional and pedagogical education for engineering educators. It is focused on low cost and convenience, thus strongly based on e-learning technologies, whenever feasible, and designed with the objective of being internationally recognized and accredited. It is proposed a hierarchy of 3 structured educational programs for engineering educators, in the context of the European Qualifications Framework for Lifelong Learning. The methodology and quality assessment system of the developed programs are based on a multi-criteria approach and provide an adequate level of engineering educators training.

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