scholarly journals Post-harvest quality model of pineapple guava fruit according to storage and weather conditions of cultivation

2017 ◽  
Vol 21 (9) ◽  
pp. 634-639
Author(s):  
Alfonso Parra-Coronado ◽  
Gerhard Fischer ◽  
Jesús H. Camacho-Tamayo
Keyword(s):  
San Francisco ◽  
Weather Conditions ◽  
Quality Characteristics ◽  
Quality Model ◽  
Ripe Fruit ◽  
Post Harvest ◽  
Guava Fruit ◽  
Pineapple Guava ◽  
Growing Region

ABSTRACT The post-harvest quality of pineapple guava fruit is determined by the storage and prevailing weather conditions during growth and development. This study proposes a model for post-harvest fruit quality according to the storage and weather conditions in the pineapple guava growing region. Physiologically ripe fruit were collected during two harvests from two locations within the Department of Cundinamarca (Colombia): Tenjo and San Francisco de Sales. The fruits were stored at 18 ± 1 °C (76 ± 5% relative humidity (RH), over 11 days) and at 5 ± 1 °C (87 ± 5% RH, over 31 days), and the quality attributes were evaluated every two days. Models of the most significant physio-chemical quality characteristics of the post-harvest fruit were developed by using the Excel® Solver tool for all data obtained in the two crop periods. The results showed that storage and prevailing weather conditions, which differed according to the altitude of the growing site, had considerable impacts on the physio-chemical characteristics of the fruit throughout the post-harvest ripening process.

scholarly journals Post-harvest quality of pineapple guava [Acca sellowiana (O. Berg) Burret] fruits produced in two locations at different altitudes in Cundinamarca, Colombia

2018 ◽  
Vol 36 (1) ◽  
pp. 68-78
Author(s):  
Alfonso Parra-Coronado ◽  
Gerhard Fischer ◽  
Jesús Camacho-Tamayo
Keyword(s):  
San Francisco ◽  
Fruit Quality ◽  
Climatic Conditions ◽  
Solid Content ◽  
Annual Precipitation ◽  
Soluble Solid Content ◽  
Post Harvest ◽  
Pineapple Guava ◽  
Average Annual Precipitation

The quality of pineapple guava fruits during post-harvest storage depends directly on their quality at harvest and is influenced by climatic conditions during growth. The aim of this study was to determine the influence of climatic conditions on certain parameters of fruit quality during post-harvest storage. Twenty trees were tagged in two locations within the department of Cundinamarca (Colombia), recording the climatic conditions during fruit growth until harvest. The fruits were differentiated by place of origin and stored at 18 ± 1ºC (76 ± 5% relative humidity, RH) for 11 d or 5 ± 1ºC (87 ± 5% RH) for 31 d, evaluating several quality attributes every two d. The places of origin were San Francisco de Sales (1,800 m a.s.l., 20.6oC, 63-97% RH, with an average annual precipitation of 1,493 mm) and Tenjo (2,580 m a.s.l., 12.5oC, 74-86% RH, with an average annual precipitation of 765 mm). The results indicated that the fruits stored at the highest temperature were sweeter and had reduced weight and firmness, lower acidity, and faster postharvest senescence (lower post-harvest durability). The postharvestN fruit characteristics were determined by considering the fruit quality during growth and the influence of climatic conditions during cultivation in each location. At the higher altitudes, the total soluble solid content in the fruits was higher and firmness decreased, and the total titratable acidity and weight loss were lower. For fruit color, significant differences were not observed that would demonstrate the effect of climatic conditions during the post-harvest period.

scholarly journals Model of pre-harvest quality of pineapple guava fruits (Acca sellowiana (O. berg) burret) as a function of weather conditions of the crops

Bragantia ◽  
2017 ◽  
Vol 76 (1) ◽  
pp. 177-186 ◽  
Author(s):  
Alfonso Parra-Coronado ◽  
Gerhard Fischer ◽  
Jesús Hernán Camacho-Tamayo
Keyword(s):  
Weather Conditions ◽  
Pineapple Guava ◽  
Acca Sellowiana

scholarly journals Development and quality of pineapple guava fruit in two locations with different altitudes in Cundinamarca, Colombia

Bragantia ◽  
2015 ◽  
Vol 74 (3) ◽  
pp. 359-366 ◽  
Author(s):  
Alfonso Parra-Coronado ◽  
Gerhard Fischer ◽  
Jesús Hernán Camacho-Tamayo
Keyword(s):  
Guava Fruit ◽  
Pineapple Guava ◽  
Different Altitudes

scholarly journals Effects of Sanitizers on the Control of Alternaria sp. Fungus for ‘Palmer’ Mango Conservation

2020 ◽  
Vol 12 (9) ◽  
pp. 216
Author(s):  
E. P. da Silva ◽  
A. Figueiredo Neto ◽  
J. C. Silva ◽  
V. P. Donzeli ◽  
M. S. Costa ◽  
...  
Keyword(s):  
Shelf Life ◽  
Factorial Design ◽  
San Francisco ◽  
Chlorine Dioxide ◽  
Post Harvest ◽  
Full Development ◽  
Alternaria Sp ◽  
Ozonated Water

One of the main problems faced by mango growers in the San Francisco Valley, Brazil, is caused by fungi. Among them, the genus Alternaria, Lasodiploida and Colletotrichum stand out. Sanitization methods have been studied in order to control the proliferation of these microorganisms and increase the shelf life of the fruits. Thus, two methods of sanitization were evaluated: Ozone and chlorine dioxide, in the control of fungi of the genus Alternaria and in the increase of post-harvest quality of Palmer mango fruits. We used a 3 × 5 factorial design with three treatments applied to fruits previously inoculated with fungi, five evaluation periods and five replications, totaling 75 experimental units. The treatments consisted of ozonated water at 3 ppm, chlorine dioxide at 12 ppm, and a control without sanitization. We noted the full development of fungi from the 10th day after contamination, more significantly for the control and to a lesser extent for the treatment with ozone. The methods of conservation with ozone and chlorine dioxide proved efficient in the conservation of fruits. The treatment with chlorine dioxide shows a significant efficiency in the control of penetration of fungi of the genus Alternaria inside the fruits.

scholarly journals Growth model of the pineapple guava fruit as a function of thermal time and altitude

2016 ◽  
Vol 36 (3) ◽  
pp. 6 ◽  
Author(s):  
Alfonso Parra-Coronado ◽  
Gerhard Fischer ◽  
Gerhard Fischer ◽  
Jesus Hernan Camacho-Tamayo ◽  
Jesus Hernan Camacho-Tamayo
Keyword(s):  
Regression Analysis ◽  
San Francisco ◽  
Growth Model ◽  
Cross Validation ◽  
Thermal Time ◽  
Logistic Growth ◽  
Guava Fruit ◽  
Pineapple Guava ◽  
Production Area ◽  
Logistic Growth Model

The growth of the pineapple guava fruit is primarily stimulated by temperature but is also influenced by other climactic factors, such as altitude. The goal of this study was to develop a growth model for the pineapple guava fruit as a function of thermal time (GDD, growing-degree day) and altitude (H) of the production area. Twenty trees per farm were marked in two sites in the Cundinamarca department (Colombia) during the 2012 and 2014 seasons. The measurements were performed every seven days after day 96 and 99 post-anthesis until harvest in the sites of Tenjo (2,580 m.a.s.l.) and San Francisco de Sales (1,800 m.a.s.l.), respectively. A growth model was produced for weight as a function of fruit length and diameter as well as for the weight of the fruit as a function of GDD and H, with this last measure adjusted to a sigmoidal logistic growth model. The parameters for the regression analysis showed that the models satisfactorily predicted fruit growth for both of the sites, with a high determination coefficient. The cross-validation showed good statistical fit between the predicted and observed models; the intercept was not significantly different than zero, and the slope was statistically equal to one.

scholarly journals Design Patterns as Laws of Quality

2011 ◽  
pp. 104-142 ◽  
Author(s):  
Yann-Gaël Gueheneuc ◽  
Jean-Yves Guyomarc’h ◽  
Khashayar Khosravi ◽  
Hourari Sahraoui
Keyword(s):  
Software Quality ◽  
Design Patterns ◽  
Object Oriented ◽  
Quality Characteristics ◽  
Quality Model ◽  
Quality Models ◽  
First Case ◽  
Software Quality Models

Software quality models link internal attributes of programs with external quality characteristics. They help in understanding relationships among internal attributes and between internal attributes and quality characteristics. Object-oriented software quality models usually use metrics on classes (such as number of methods) or on relationships between classes (for example coupling) to measure internal attributes of programs. However, the quality of object-oriented programs does not depend on classes solely: it depends on the organisation of classes also. We propose an approach to build quality models using patterns to consider program architectures. We justify the use of patterns to build quality models, describe the advantages and limitations of such an approach, and introduce a first case study in building and in applying a quality model using design patterns on the JHotDraw, JUnit, and Lexi programs. We conclude on the advantages of using patterns to build software quality models and on the difficulty of doing so.

scholarly journals Measurement of software quality based on international standards

Radiotekhnika ◽  
2021 ◽  
pp. 152-157
Author(s):  
O. Zaporozhets ◽  
N. Shtefan
Keyword(s):  
Software Quality ◽  
Main Tool ◽  
Quality Characteristics ◽  
International Standards ◽  
Quality Model ◽  
Model Quality ◽  
Measurement Systems ◽  
Software Products ◽  
Potential Benefits

Quality is one of the factors that ensure the commercial success and safety of using the software. Quality is understood as conformity the explicit and implicit requirements of various stakeholders. It is necessary to ensure a joint understanding between developers and users, engineers need to understand the meaning of the concept of quality, characteristics and importance of quality for the developed or maintained software. Measurements are the basis for quality assurance. They are the main tool for managing the life cycle of software products, assessing the implementation of plans and monitoring. To quantify quality, it is necessary to measure the characteristics of the software. Standardization provides unification of requirements for quality, its measurement and assessment. The use of standards has many potential benefits for any organization, especially in key areas such as measuring the quality of software products, information and measurement systems. Recognized international standards organizations have published the ISO/IEC 25000 series of standards for systems and software quality requirements and evaluation (SQuaRE), which is gaining widespread practical application. The paper discusses a series of the SQuaRE international standards, analyzes the relationship between the quality model, quality characteristics, quality measures and a new concept, i.e., a quality measure element of the software, presents the measurement of quality based on these standards.

scholarly journals A Quality Communication Framework for Open Source Softwares

2019 ◽  
Vol 9 (1S3) ◽  
pp. 263-267
Keyword(s):  
Open Source ◽  
Open Source Software ◽  
Quality Characteristics ◽  
Technical Quality ◽  
Development Cost ◽  
Design Development ◽  
Quality Model ◽  
Communication Framework ◽  
Time To Delivery

Open Source Software (OSS) is an emerging technology of software development in present era, careful implementation and procurement can gives us more benefits for OSS- adapting organizations. But any failure in design, development and procurement will leads to major impact to OSSdeveloper organization (community) to stop their further release and completely destroy the adapted system. Success of any software’s based on it’s time to delivery, development cost and effectiveness. Open source software can fulfill these factors due to its availability of source code, openness and sustainability of Technical quality among development community. At the same time, more number of developers in a community of any OSS leads to delay in development. But it has chance to improve software effectiveness in terms of defect free, since software can be reviewed using various testing methodology, tools and plans in different perception. An OSS has more issues such as lack of architecture design, co-ordination, organizational structure and documentation, removing these issues will strengthen the quality of OSS. This paper includes the quality model and framework for organized communication the quality characteristics in an appropriate aspects is required since unorganized communications wherever people involved can leads to high quality risk.

scholarly journals Evaluating Quality Characteristics of Ubiquitous Application Through Means of Quality Models using Meta-metrics Approach

2021 ◽  
Vol 2120 (1) ◽  
pp. 012033
Author(s):  
N Hamzah ◽  
S Chuprat ◽  
D O Dwi Handayani ◽  
K Xiaoxi ◽  
S D Nagappan
Keyword(s):  
Comparative Analysis ◽  
Daily Life ◽  
Quality Characteristics ◽  
Preliminary Review ◽  
Quality Model ◽  
Quality Models ◽  
Value Assignment ◽  
Work Related ◽  
Measurement Function

Abstract Ubiquitous computing shifted the way how users interact with applications. The demand of information anytime and anywhere impacts the daily life of its users, be it work related or personal. Difficulty arises when determining the quality of ubiquitous application due to lack in appropriate metrics of quality models, which serves as the motivation behind this paper. The aim of this paper is to assess the quality of ubiquitous application using comparative analysis of quality model metrics via meta-metrics approach. Preliminary review mapping was conducted where distinctive quality characteristics of ubiquitous applications from AQUARIUM model are identified. Metrics mapping was then conducted to compare metrics characteristics with quality characteristics via value assignment using meta-metrics technique. Results shows that most of the metrics mapped are not of definitive derivation, providing opportunity to have a more structured and defined measurement function.

scholarly journals Post-harvest storage of ‘Paluma’ guavas produced by plants fertirrigated with nitrogen and biofertilizer

2020 ◽  
Vol 11 ◽  
pp. e3221
Author(s):  
Elisson Alves Santana ◽  
Deisiele Diniz Lima ◽  
Clériton Souza ◽  
Acácio Figueiredo Neto ◽  
Ítalo Herbert Lucena Cavalcante ◽  
...  
Keyword(s):  
Nitrogen Fertilization ◽  
Mineral Fertilizer ◽  
Titratable Acidity ◽  
Soluble Solids ◽  
Chemical Quality ◽  
Mineral Fertilization ◽  
Post Harvest ◽  
Guava Fruit ◽  
Physical Chemical

The association between mineral fertilizer and biofertilizers can contribute to guavas quality. An experiment was carried out in order to assess, over the days, 'Paluma' guavas physical-chemical quality in function of nitrogen fertilizer and biofertilizer doses. It was adopted a randomized blocks with treatments distributed in a factorial 5 x 2 x 5 referring to evaluation days post-harvest (0, 3, 6, 9 and 12), nitrogen fertilization (50 and 100% culture recommendation) and application of bovine biofertilizer doses by fertigation (0.0, 2.5, 5.0, 7.5 and 10.0%). The physical-chemical quality of 'Paluma' guava fruit was influenced by the association between liquid bovine biofertilizer and nitrogen fertilization. This combination increased soluble solids, titratable acidity, ratio, vitamin C, pH, firmness and loss of fresh mass, but did not affect the pulp percentage. The bovine biofertilizer, together with mineral fertilization, is important to increase the post-harvest quality of 'Paluma' guava.

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