scholarly journals Physicochemical characterization of copper slag and alternatives of friendly environmental management

2013 ◽  
Vol 49 (2) ◽  
pp. 161-168 ◽  
Author(s):  
M. Sánchez ◽  
M. Sudbury
Keyword(s):  
New Technologies ◽  
Physicochemical Characterization ◽  
Mining Industry ◽  
Chemical Characterization ◽  
Copper Slag ◽  
Experimental Laboratory ◽  
Commercial Applications ◽  
Ultimate Objective ◽  
Classical Perception ◽  
Work Done

Copper slags are usually considered a waste and characterized only by the final copper content. Large and increasing quantities are being produced and disposed of by stockpiling near the metallurgical plants. This paper stresses the importance of physico-chemical characterization when considering uses for slags and the possibility of recovering the valuable metals still remaining in this phase. The purpose of this work is to support and encourage a change in the classical perception of slag from a ?waste? to a ?resource?; promote the development of new technologies for treatment to recover residual values and encourage a search for new uses; with the ultimate objective of eliminating slag stockpiles thereby diminishing the environmental impact of smelting operations. Some of the results of experimental laboratory work done by the authors and examples of commercial applications will be shown. A promising future for valorization and utilization of slags is expected and will provide an example when considering the use of all the other large quantities of wastes generated by the mining industry.

scholarly journals Freshness Monitoring of Packaged Vegetables

2020 ◽  
Vol 10 (21) ◽  
pp. 7937
Author(s):  
Heba Beshai ◽  
Gursimran Sarabha ◽  
Pranali Rathi ◽  
Arif Alam ◽  
M. Deen
Keyword(s):  
Intelligent Systems ◽  
Food Packaging ◽  
Fruits And Vegetables ◽  
New Technologies ◽  
Legal Aspects ◽  
Smart Packaging ◽  
Factors Affecting ◽  
New Concepts ◽  
Market Needs ◽  
Commercial Applications

Smart packaging is an emerging technology that has a great potential in solving conventional food packaging problems and in meeting the evolving packaged vegetables market needs. The advantages of using such a system lies in extending the shelf life of products, ensuring the safety and the compliance of these packages while reducing the food waste; hence, lessening the negative environmental impacts. Many new concepts were developed to serve this purpose, especially in the meat and fish industry with less focus on fruits and vegetables. However, making use of these evolving technologies in packaging of vegetables will yield in many positive outcomes. In this review, we discuss the new technologies and approaches used, or have the potential to be used, in smart packaging of vegetables. We describe the technical aspects and the commercial applications of the techniques used to monitor the quality and the freshness of vegetables. Factors affecting the freshness and the spoilage of vegetables are summarized. Then, some of the technologies used in smart packaging such as sensors, indicators, and data carriers that are integrated with sensors, to monitor and provide a dynamic output about the quality and safety of the packaged produce are discussed. Comparison between various intelligent systems is provided followed by a brief review of active packaging systems. Finally, challenges, legal aspects, and limitations facing this smart packaging industry are discussed together with outlook and future improvements.

scholarly journals Physicochemical characterization and nutritional composition analysis of pineapple guava at three different ripening stages

2016 ◽  
Vol 34 (2) ◽  
pp. 217-227 ◽  
Author(s):  
Lina María García-Rivera ◽  
Henry Alexander Váquiro-Herrera ◽  
José Fernando Solanilla-Duque
Keyword(s):  
Vitamin A ◽  
Physicochemical Characterization ◽  
Chemical Characterization ◽  
Nutritional Composition ◽  
Neutral Detergent Fiber ◽  
Composition Analysis ◽  
Current Consumption ◽  
Total Carbohydrates ◽  
Pineapple Guava ◽  
Acca Sellowiana

Pineapple guava (Acca sellowiana [O. Berg] Burret) is a fruit with export and production potential in Colombia. However, there are few reports about its composition concerning physiological behavior throughout the different ripening phases. Intending to confront this situation, a study was proposed in order to evaluate the physicochemical properties and the nutritional composition of pineapple guava fruits in three different phases of ripening, determined by the weeks elapsed after anthesis, considering it undeveloped for week 17 (W17), ripe for week 20 (W20) and overripe from week 21 (W21). Pineapple guava fruits were preliminarily characterized, they underwent a bromatological analysis and their content of vitamin A and C content was established. The results showed a significant content of crude fiber and total carbohydrates in the three evaluated phases. There was also a decrease in the neutral detergent fiber of 38% between W17 and W21. The highest level of vitamin C was reported in W17 (67.82 mg ascorbic acid/g dry sample), as well as for vitamin A (12.65 mg β-carotene/g dry sample). In a physical-chemical characterization, the existence of a particular physiological behavior is possible because of the development in size and mass of the fruit after physiological ripening. Additionally, the calcium and reducing carbohydrate content can be associated with the pulp browning phenomenon. Clearly, pineapple guava is a promising fruit thanks to its nutritional properties, according to the current consumption tendencies.

Nano-Mg/Al hydrotalcite: Physicochemical Characterization and Removal of As(III) from Aqueous solutions

2014 ◽  
Vol 1616 ◽  
Author(s):  
E. Ramos-Ramírez ◽  
N. L. Gutiérrez-Ortega ◽  
G. Rangel-Porras ◽  
G. Herrera-Pérez
Keyword(s):  
Adsorption Isotherm ◽  
Aqueous Solutions ◽  
Natural Waters ◽  
Arsenic Removal ◽  
Sol Gel ◽  
Physicochemical Characterization ◽  
Chemical Characterization ◽  
Kinetic Studies ◽  
Isotherm Models ◽  
Ionic Exchange

ABSTRACTArsenic is one of the most toxic elements that can be found. Arsenic is mainly emitted by the copper, lead and zinc production, in agriculture as pesticides and herbicides. Two forms of arsenic are common in natural waters: arsenite (AsO33−) and arseniate (AsO43−), referred to as As(III) and As(V). The nano-Mg/Al-hydrotalcites present ionic exchange and adsorbent capacities. In this work, the physic-chemical characterization of nano-Mg/Al-hydrotalcites and his arsenic removal capacityis described. The solids were synthesized by the sol-gel method with Mg/Al=2 and 3 ratio. The solids and their thermal treated products were characterized by XRD, FTIR, DTA, TGA and N2 adsorption. The solids were used as adsorbents As(III) in aqueous solutions. Adsorption isotherm studies of As(III) from aqueous solution are described. The adsorbent capacity was determined using the Langmuir, Freundlich and Dubinin–Radushkevich adsorption isotherm models. The As(III) adsorption isotherm data fit best to the isotherm Freundlich model. The maximum As(III) uptake capacity by nano-Mg/Al-hydrotalcites and the heated solids were determined using the Freundlich equation and were found to 547.46, 660.15, 799.88 and 739.12 mg As(III)/g HT-Mg/Al=2, HT-Mg/Al=3, HT-Mg/Al=2 at 350°C and HT-Mg/Al=3 at 350°C respectively. In the kinetic studies using 40 mg/L concentration of As(III) solutions was obtained an excellent removal capacity in contact times less at one minute.

Data Mining Architecture System Expansion

2014 ◽  
Vol 926-930 ◽  
pp. 1898-1901
Author(s):  
Jing Zhu Li ◽  
Hui Ling Wu ◽  
Tai Yu Liu
Keyword(s):  
Data Mining ◽  
Data Warehouse ◽  
Traditional Method ◽  
New Technologies ◽  
System Expansion ◽  
New Development ◽  
Design Selection ◽  
Commercial Applications ◽  
Technical Features ◽  
Enterprise Data Warehouse

How to build a data warehouse and data mining is constantly worth exploring and optimization, not only technically, in commercial applications as well. This article discusses the introduction of new technologies and concepts, the traditional method of data warehouse technology has changed dramatically, based on data warehouse applications are a new development. Each enterprise data warehouse based on the characteristics of different companies, you can use a very flexible method of selection and design selection, implementation. According to some relatively new technical features, talk about data warehousing and data mining architecture.

scholarly journals Priority Directions Development of the Regions Social and Economic Activity

2019 ◽  
Vol 29 (1) ◽  
pp. 166-172 ◽  
Author(s):  
Maria Vikhoreva ◽  
Tatyana Kirillova
Keyword(s):  
Development Strategy ◽  
Economic Activity ◽  
New Technologies ◽  
Mining Industry ◽  
Spatial Approach ◽  
Regional Development Strategy ◽  
Irkutsk Region ◽  
Territorial Structure ◽  
Expert Assessments

The socio-economic activity of the region is studied using the Irkutsk region as an example. The analysis of the dynamics of the main socio-economic indicators revealed important features of its territorial structure. In order to implement the assessment and qualitative analysis to form the directions of preparation of the regional development strategy, it was proposed to apply a spatial approach, taking into account all of the above. Expert assessments have shown that the region has a very high environmental risk, so it is necessary to introduce measures related to the greening of the economic structure as a kind of diversification. Geographically, the region is proposed to develop in different directions, taking into account the identified features. The southern part is promising for the implementation of tourism and recreational potential and services, as it has appropriate infrastructure and resources. The implementation of this direction requires significant investment, but it pays off quickly in comparison with the development of industry. As for the northern territory of the region, the presence of significant natural resources creates prospects for their deeper processing and for introduction of new technologies in the mining industry. Expansion of the direction is possible due to the long-term development of scientific and educational activities.

scholarly journals Physical characterization of the fruit and nutritional value and microbiology quality of the Pentadesma butyracea fruit pulp collected from various parks in Benin

2021 ◽  
Author(s):  
Bernolde Paul Ayegnon ◽  
Ifagbémi Bienvenue Chabi ◽  
Folachodé Ulrich Gildas Akogou ◽  
Adéchola Pierre Polycarpe Kayodé
Keyword(s):  
Nutritional Value ◽  
Average Length ◽  
Physicochemical Characterization ◽  
Chemical Characterization ◽  
Physical Aspect ◽  
Fruit Pulp ◽  
Crude Lipid ◽  
Post Harvest Loss ◽  
Pentadesma Butyracea

Abstract In Benin, Pentadesma butyracea fruit pulp undergoes significant post-harvest loss due to its low valorization. The collected fruits in five parklands from a survey of transformer's perception were characterized through their visual observations, the determination of their dimensions and pulp proportions. The nutritional value of pulp was evaluated through its chemical characterization. The results of this study revealed that four shapes (ellipsoid, globular, ovoid, ellipsoid twisted) identify the physical aspect of P. butyracea fruits in the P. butyracea parklands. The average length, diameter at the equator, mass and pulp proportion of fruits were 130.93 mm, 86.98 mm, 125.63 g and 35.79%, respectively. The physicochemical characterization showed that the P. butyracea fruit pulp contained 3.37-3.41 pH, 3.33-4.61% protein, 20.37 – 20.78% fiber, 2.78-3.57% ash, 6.31-6.51% crude lipid, 85.77-86.47% moisture, 21.54-23.22 mg/ml total phenolics, 0.73-1.03% acidity titratable, 65.10 – 66.94% carbohydrates, 335.75-338.99 kcal calorie and minerals (Ca, Fe, Zn, Mn). The antioxidant activity result showed that the P. butyracea fruit pulp is a valuable source of antioxidant pigments. Faecal coliforms are not detected in pulps and the aerobic mesophilic bacteria, yeasts and moulds, and Staphylococcus aureus were below detection level in P. butyracea fruit pulps.

scholarly journals FORMATION OF ADDITIONAL WORKING COMPETENCE AT BACHELOR STUDENTS IN TECHNICAL UNIVERSITIES

2020 ◽  
pp. 220-229
Author(s):  
Шамиль Рашидович Хасанов
Keyword(s):  
Labor Market ◽  
New Technologies ◽  
Training Programs ◽  
Necessary Condition ◽  
Practical Training ◽  
University Graduates ◽  
Regional Labor Market ◽  
Industrial Companies ◽  
Regional Labor ◽  
Work Done

Актуальность статьи обусловлена необходимостью формирования дополнительной рабочей компетенции у бакалавров в технических вузах. По мнению работодателей, бакалавры, освоившие рабочие профессии и имеющие соответствующий документ - удостоверение, подтверждающее квалификацию рабочего (служащего), наиболее конкурентоспособны на региональном рынке труда. Выпускники вузов, которые решили начать карьеру на предприятии с профессии рабочего, не боятся сложностей и новых технологий, способны выполнять необходимую работу, стремятся совершенствовать свои профессиональные навыки. Проведенный анализ литературных источников, посвященных вопросам современной промышленности, рынка труда и трудоустройства, позволил автору выделить проблемы профессиональной адаптации бакалавров технических вузов. Обоснована необходимость формирования у бакалавров рабочей компетенции - квалификации рабочего для повышения эффективности прохождения производственной практики и дальнейшего трудоустройства. В статье рассмотрена возможность формирования дополнительной рабочей компетенции у бакалавров на примере Казанского государственного энергетического университета (КГЭУ). В результате выработаны рекомендации по проектированию программ подготовки рабочих и их интеграции с программами подготовки бакалавров, а также созданию специализированных центров практической подготовки совместно с промышленными компаниями. Показана значимость подготовки студентов по рабочей профессии как необходимое условие для институционализации полученной прикладной квалификации. The relevance of the article is due to the need to form additional working competence at bachelor students in technical universities. According to employers, bachelors who have mastered working professions and have a corresponding document - a certificate confirming the qualifications of a worker (employee) are the most competitive in the regional labor market. University graduates who have chosen career growth in an enterprise as a worker are not afraid of difficulties and are ready to master new technologies, they are able to perform the necessary work and strive to improve their professional skills. The analysis of the works on the issue of modern industry, the labor market and employment allowed the author to highlight the problems of professional adaptation of bachelors of technical universities. The article substantiates the need for the formation of bachelor students’ working competence - the qualifications of the worker - in order to increase the efficiency of industrial placement and further employment. The article considers the possibility of formation of additional working competence at bachelor students as exemplified by the Kazan State Power Engineering University (KSPEU). As a result of the work done, the author developed the recommendations on designing training programs for workers, and their integration with bachelor training programs, as well as the creation of specialized centers for practical training in conjunction with industrial companies. The importance of training students in the working profession is shown as a necessary condition for formalizing the qualifications.

scholarly journals Physicochemical Characterization, Stability and Cytotoxicity of a Blue Dye Obtained from Genipap Fruit (Genipa americana L.)

2021 ◽  
Vol 59 (1) ◽  
Author(s):  
Camila Verly de Miranda Sabino ◽  
Bárbara Janaína Paula da Silva ◽  
Danielle Lima Bezerra de Menezes ◽  
Felipe Moura Araújo da Silva ◽  
Tatiane Pereira de Souza ◽  
...  
Keyword(s):  
Physicochemical Characterization ◽  
Chemical Characterization ◽  
Physicochemical Characteristics ◽  
Biological Properties ◽  
Natural Dyes ◽  
Blue Dye ◽  
Synthetic Dyes ◽  
Main Compound ◽  
Electron Microscopy Analysis ◽  
The Stability

Research background. The current commercial scenario indicates an increase in the demand for natural dyes. Compared to synthetic dyes, natural ones have the advantage of being sustainable, making them of great interest for the food and cosmetic industries. The development of new natural dyes is necessary, as well as the carrying out of complementary research regarding the existing ones. Experimental approach. The present study aimed to characterize the chemical and physicochemical characteristics of the dehydrated endocarp of the genipap (Genipa americana) fruit, as well as performing the relevant stability and cytotoxicity tests. The chemical characterization was performed by LC/MS/MS analyses. The stability studies were carried out by spectrophotometry and cytotoxicity assays using cell culture and fluorometric methods. Results and conclusions. After dehydration and milling of the fruit's endocarp, a powder was obtained, which with 20 % water was used to extract the dye. Five compounds were elucidated using HPLC-MS and confirmed the presence of the geniposide as its main compound. Via the X-ray diffraction test and electron microscopy analysis, it was possible to describe the powder obtained as being amorphous and of porous structure with a variable size, respectively. The thermogravimetric analysis indicated a maximum loss of 61 % mass after exposure to a temperature range of 240 °C to 760 °C. The obtained blue dye showed to be stable in the absence of light, at room temperature and presented neutral pH. In the cytotoxicity assay, 95.05±1.33 % of viable human fibroblast were observed after exposure to this dye. The genipap fruit can be a viable alternative for the obtention of natural blue dye, since it is easy to obtain and has very low toxicity for food, pharmaceutical or cosmetic industries. Novelty and scientific contribution. This study demonstrates for the first time the physicochemical and biological properties of a natural blue dye from G. americana fruit.

LNG Regasification Integrated Within an Air-Separation Process

2014 ◽  
Author(s):  
T. Morosuk ◽  
M. Schult ◽  
G. Tsatsaronis
Keyword(s):  
New Technologies ◽  
Separation Process ◽  
Air Separation ◽  
Transfer Processes ◽  
Energy And Exergy ◽  
Industrial Complexes ◽  
Commercial Applications ◽  
Novel Concept ◽  
Large Groups ◽  
Exergy Analyses

The liquefied natural gas (LNG) market has grown significantly and the growth is expected to continue in the future. New technologies that lead to an increased efficiency in each step of the LNG chain are currently under consideration. The studies and the commercial applications associated with the LNG regasification processes can be divided into three large groups: (a) Direct and indirect heat transfer processes between water and LNG; (b) LNG-based co-generation systems, and (c) industrial complexes consisting of an LNG import terminal and an energy-conversion plant, or an energy-intensive chemical plant. In this paper a novel concept for integrating the LNG vaporization into an air separation process is presented. The simulation, energy and exergy analyses are discussed.

RFID tags: commercial applications v. privacy rights

2005 ◽  
Vol 105 (6) ◽  
pp. 703-713 ◽  
Author(s):  
Eileen P. Kelly ◽  
G. Scott Erickson
Keyword(s):  
Radio Frequency Identification ◽  
New Technologies ◽  
Civil Liberty ◽  
Economic Benefits ◽  
Privacy Rights ◽  
Rfid Technology ◽  
Economic Interests ◽  
Content Type ◽  
Consumer Privacy ◽  
Commercial Applications

PurposeThis article seeks to examine the use of radio frequency identification (RFID) technology in commercial applications and to discuss whether regulation is needed to balance commercial economic interests versus consumer privacy and libertarian concerns.Design/methodology/approachThis paper covers discussions and comparative studies of others' work and thinking.FindingsRFID technology provides enormous economic benefits for both business and consumers, while simultaneously potentially constituting one of the most invasive surveillance technologies threatening consumer privacy.Practical implicationsThe use of RFID technology has profound consumer privacy, civil liberty and security implications.Originality/valueRFID technology is at an embryonic stage. Like many new technologies, it poses both potential benefit and harm to society. The article recommends that legislation is needed to tip the balance enough to provide adequate privacy protection without unduly harming economic efficiency.

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