scholarly journals Modeling of the structure and properties of a mineral wool cylinders

2019 ◽  
Vol 298 ◽  
pp. 00096
Author(s):  
Kazbek Ivanov ◽  
Boris Efimov
Keyword(s):  
Food Industry ◽  
Small Diameter ◽  
Operational Reliability ◽  
Mineral Wool ◽  
Technical Equipment ◽  
Shopping Centers ◽  
Structure And Properties ◽  
Safety Requirements ◽  
Private Housing ◽  
Almost All

Thermal insulation is used in almost all industries, providing technological requirements, operational reliability and trouble-free operation of facilities, many of which are classified as explosive and fire hazardous or pose a danger to human health and the environment. Mineral wool cylinders are used to insulation of pipelines in all industries. The main segment is pipeline insulation in various industries for a pipe with small diameter of 12 to 273 mm. When insulating pipes of a larger diameter, segments (half-cylinders) or mats are used. It is widely used at all facilities without restriction, such as: multifunctional shopping centers, private housing, apartment buildings, factories and pipelines of technical equipment, food industry (at the food industry plants apply high fire safety requirements, as well as cleanliness in the workspace), hospitals, kindergartens, schools.

Subsea Cable Stability on Rocky Seabeds: Comparison of Field Observations Against Conventional and Novel Design Methods

2018 ◽  
Author(s):  
Terry Griffiths ◽  
Scott Draper ◽  
Liang Cheng ◽  
Feifei Tong ◽  
Antonino Fogliani ◽  
...  
Keyword(s):  
Oil And Gas ◽  
Power Transmission ◽  
Small Diameter ◽  
Oil And Gas Industry ◽  
Operational Reliability ◽  
Design Methods ◽  
Gas Industry ◽  
Integrity Management ◽  
Tidal Stream ◽  
Almost All

As offshore renewable energy projects progress from concept demonstration to commercial-scale developments there is a need for improved approaches beyond conventional cable engineering design methods that have evolved from larger diameter pipelines for the oil and gas industry. New approaches are needed to capture the relevant physics for small diameter cables on rocky seabeds to reduce the costs and risks of power transmission and increase operational reliability. This paper reports on subsea cables that MeyGen installed for Phase 1a of the Pentland Firth Inner Sound tidal stream energy project. These cables are located on rocky seabeds in an area where severe metocean conditions occur. ROV field observation of these cables shows them to be stable on the seabed with little or no movement occurring over almost all of the cable routes, despite conventional engineering methods predicting significant dynamic movement. We cite recent research undertaken by the University of Western Australia (UWA) to more accurately assess the hydrodynamic forces and geotechnical interaction of cables on rocky seabeds. We quantify the conformity between the cables and the undulating rocky seabed, and the distributions of cable-seabed contact and spanning via simulations of the centimetric-scale seabed bathymetry. This analysis leads to calculated profiles of lift, drag and seabed friction along the cable, which show that all of these load and reaction components are modelled in an over-conservative way by conventional pipeline engineering techniques. Overall, our analysis highlights that current cable stability design can be unnecessarily conservative on rocky seabeds. Our work foreshadows a new design approach that offers more efficient cable design to reduce project capex and enhance through-life integrity management.

Role of Socio-Technical Assistance (STA) in Private Housing Reconstruction for Vulnerable Community (A case study of Okhaldhunga District, Nepal)

2020 ◽  
Vol 3 (3) ◽  
pp. 106-114
Author(s):  
Tej Bahadur Karki ◽  
Rita Lamsal ◽  
Namita Poudel
Keyword(s):  
Technical Assistance ◽  
Economic Status ◽  
Single Women ◽  
Great Earthquake ◽  
Private Housing ◽  
Vulnerable Households ◽  
Housing Reconstruction ◽  
Almost All

Vulnerability is such stage when such people and group can be easily harmed physically or emotionally. They are always in risk in natural or man-made disaster so such people and groups should be cared and supported by all concerns. Great earthquake of August 2015, many old age people, poor, single women, child-headed family and disable family become vulnerable in earthquake affected districts of Nepal. So, Nepal Government had deployed the Socio-Technical Assistance (STA) team to support the vulnerable households. The main objective of this study was to identify the role of STA in private housing reconstruction of vulnerable household. The study was conducted in Okhaldhunga district among the 35 vulnerable households. The study was based on the mixed method so both quantitative and qualitative method was used to collect the data. The findings show that majority of ethnic group who were more than 70 years old were in urgent need of support who were fully supported by STA. almost all beneficiaries were happy with the support and behaviour of STA. economically, 44.1% household had spent more than 3 Lakh to build the house so they had to manage the additional amount. They had taken loan from relative and neighbor so Nepal Government should provide livelihood support to such household to improve their socio-economic status.

scholarly journals The Profile of Carotenoids and Other Bioactive Molecules in Various Pumpkin Fruits (Cucurbita maxima Duchesne) Cultivars

Molecules ◽  
2019 ◽  
Vol 24 (18) ◽  
pp. 3212 ◽  
Author(s):  
Bartosz Kulczyński ◽  
Anna Gramza-Michałowska
Keyword(s):  
Chemical Composition ◽  
Bioactive Compounds ◽  
Food Industry ◽  
Complex Analysis ◽  
Bioactive Molecules ◽  
Cucurbita Maxima ◽  
Baked Goods ◽  
Number Of Publications ◽  
Almost All ◽  
Available Information

Bioactive compounds are significant to human nutrition. They are beneficial to health as they inhibit the development of numerous diseases of affluence. Scientists continuously search for natural sources of these components. At present, the chemical composition of various plants is under investigation. Many researchers are interested in pumpkin (Cucurbita L. spp.). Different organs of this plant (pulp, seeds, flowers, leaves, shoots, roots) are consumed almost all over the world. They contain large amounts of bioactive compounds. Pumpkin pulp is used to prepare various dishes. It is also widely used in the food industry for the production of pastries, baked goods, juices, jams, marinades, and baby food. The content of carotenoids in the pumpkin has been documented in a large number of publications. However, so far there has been no complex analysis of the profile of other bioactive compounds. This article analyses 11 pumpkin cultivars of the Cucurbita maxima Duchesne species. It compares the chemical composition of the pulp and analyses the content of bioactive compounds such as carotenoids, polyphenols (flavonols and phenolic acids), tocopherols, minerals (K, Ca, Mg, Na, Fe, Zn, Cu, Mn), vitamins (C, B1, folates). In view of available information, the study provides an innovative approach. The analysis showed high diversity in the concentration of individual components between the cultivars. The research proved that pumpkin pulp was not only a source of carotenoids but also other bioactive compounds.

Hydrodynamic Forces on Near-Bed Small Diameter Cables and Pipelines in Currents, Waves and Combined Flow

2019 ◽  
Author(s):  
Terry Griffiths ◽  
Yunfei Teng ◽  
Liang Cheng ◽  
Hongwei An ◽  
Scott Draper ◽  
...  
Keyword(s):  
Renewable Energy ◽  
Oil And Gas ◽  
Experimental Testing ◽  
Small Diameter ◽  
Preliminary Test ◽  
High Energy ◽  
Operational Reliability ◽  
Hydrodynamic Forces ◽  
Design Data ◽  
Energy Projects

Abstract The on-bottom stability design of subsea pipelines and cables is important to ensure safety and reliability but can be challenging to achieve, particularly for renewable energy projects which are preferentially located in high energy metocean environments. Often these conditions lead to the seabed being stripped of all loose sediment, leaving the cables to rest on exposed bedrock where roughness features can be similar in size to the cables. As offshore renewable energy projects progress from concept demonstration to commercial-scale developments, new approaches are needed to capture the relevant physics for small diameter cables on rocky seabeds to reduce the costs and risks of export power transmission and increase operational reliability. These same considerations also apply to the cables and small diameter pipes — such as umbilicals — required by oil and gas projects located on rocky seabeds. Recent experimental testing using the University of Western Australia’s unique Large O-tube has enabled the experimental measurement of hydrodynamic forces on small diameter cables and pipes in proximity to smooth and rough beds. The tested conditions extend well beyond the existing published parameter range including much higher KC conditions together with seabed roughness which is comparable in size to the diameter. The results provide design data of great relevance to the ongoing development of marine renewable and conventional oil and gas projects, especially on rocky seabeds. This paper presents a summary of the existing knowledge on the subject as a preface to preliminary test results and gives tentative conclusions on the likely outcomes from this work.

scholarly journals System Analysis of Biogas Production—Part II Application in Food Industry Systems

Energies ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 412 ◽  
Author(s):  
Emma Lindkvist ◽  
Magnus Karlsson ◽  
Jenny Ivner
Keyword(s):  
Food Industry ◽  
System Analysis ◽  
Animal Feed ◽  
Biogas Production ◽  
Treatment Method ◽  
Energy And Environment ◽  
Efficient Alternative ◽  
Almost All ◽  
Business As Usual ◽  
By Products

Biogas production from organic by-products is a way to recover energy and nutrients. However, biogas production is not the only possible conversion alternative for these by-products, and hence there is interest in studying how organic by-products are treated today and which alternatives for conversion are the most resource efficient from a systems perspective. This paper investigates if biogas production is a resource efficient alternative, compared to business as usual, to treat food industry by-products, and if so, under what circumstances. Five different cases of food industries were studied, all with different prerequisites. For all cases, three different scenarios were analysed. The first scenario is the business as usual (Scenario BAU), where the by-products currently are either incinerated, used as animal feed or compost. The second and third scenarios are potential biogas scenarios where biogas is either used as vehicle fuel (Scenario Vehicle) or to produce heat and power (Scenario CHP). All scenarios, and consequently, all cases have been analysed from three different perspectives: Economy, energy, and environment. The environmental perspective was divided into Global Warming Potential (GWP), Acidification Potential (AP), and Eutrophication Potential (EP). The results show, in almost all the systems, that it would be more resource efficient to change the treatment method from Scenario BAU to one of the biogas scenarios. This paper concludes that both the perspective in focus and the case at hand are vital for deciding whether biogas production is the best option to treat industrial organic by-products. The results suggest that the food industry should not be the only actor involved in deciding how to treat its by-products.

EVALUATION OF PROCESSES OF CONCENTRATION BUSINESS ENTITIES IN PROCESSING OF ANIMAL-BASED PRODUCTS IN POLAND

2018 ◽  
Vol XIX (6) ◽  
pp. 62-67 ◽  
Author(s):  
Piotr Chechelski
Keyword(s):  
Food Industry ◽  
Technical Equipment ◽  
The European Union ◽  
Work Efficiency ◽  
Animal Products ◽  
Animal Product ◽  
Business Entities ◽  
Stable Employment ◽  
The Impact ◽  
The Eu

The aim of the article is to assess the level and directions of changes in the subjective structures of animal products processing in the food industry in Poland in 2004 -2015. Considerations were started from the comparison of changes in the subjective structures of the food industry in Poland and the European Union. In the following, changes in the share of individual groups of enterprises were presented, both in the total number of entities, average employment, and in the value of sold production, and the impact of these changes on labor productivity in the analyzed groups of enterprises. Based on the analysis, it can be concluded that the integration processes with the EU and globalization have had a significant impact on the concentration processes in the animal product industries (investments in modernization and adjustment of production to Community requirements). The process of changes in entity structures in this segment was faster than in the entire food industry and was diversified in the industry. The improvement of work efficiency was the result of more production, with relatively stable employment, but also the increase in the technical equipment of work.

scholarly journals Food Allergen Labeling: A Latin American Approach

2018 ◽  
Vol 101 (1) ◽  
pp. 14-16 ◽  
Author(s):  
Maria Cristina Lopez
Keyword(s):  
Latin American ◽  
Food Industry ◽  
Food Hypersensitivity ◽  
Health Concern ◽  
Food Allergens ◽  
Public And Private ◽  
Prepackaged Foods ◽  
Almost All ◽  
Diverse Data ◽  
And Control

Abstract Food allergy is a public health concern almost all over the world. Although most of the countries that regulate the declaration of allergens in prepackaged foods include the list recommended by the Codex Alimentarius, some countries have added other allergens to this list due to prevalence data and regional incidence, whereas others have incorporated exceptions for some products derived from allergenic foods. Within this context, the situation in Latin America regarding these regulations is diverse. Data about prevalence of food hypersensitivity are very limited in the region. The countries that have established regulations are Brazil, Colombia, Costa Rica, Guatemala, Honduras, El Salvador, Nicaragua, Chile, Mexico, and Venezuela. Argentina has approved a regulation for the labeling of food allergens in November 2016. It only needs to be published in the Official Bulletin to go into effect. All countries follow the Codex list that includes latex and excludes sulfites, except Brazil. On the other hand, Argentina is the only country that includes exceptions. As for the methodologies for the detection of allergens in foods, this issue is a serious problem for both the food industry and control laboratories. Available methodologies are based mainly on commercial ELISA kits; currently, there are no Latin American companies that produce them, so ELISA kits are expensive and their acquisition is complicated. There is an initiative in Argentina to address all these gaps in the region through the Platform of Food Allergens (PFA), a nonprofit organization that integrates health professionals, patients, representatives of the food industry, government, and scientists. The different actions carried out by the PFA have made it possible to contact different scientific groups from other Latin American countries in order to expand this initiative and thereby promote and strengthen both public and private capacities in the region.

scholarly journals COMPOSITE MATERIALS BASED ON CEMENT BINDERS MODIFIED WITH SiO2 NANOADDITIVES

2017 ◽  
Vol 16 (6) ◽  
pp. 459-465
Author(s):  
B. M. Khroustalev ◽  
S. N. Leonovich ◽  
V. V. Potapov ◽  
E. N. Grushevskaya
Keyword(s):  
Corrosion Resistance ◽  
Materials Science ◽  
Ionic Composition ◽  
Construction Materials ◽  
Operational Reliability ◽  
Strength Development ◽  
Ultrasonic Processing ◽  
Structure And Properties ◽  
Urgent Task ◽  
High Level

Development of nanotechnologies allows to solve a number of problems of construction materials science: increase in strength, durability, abrasion and corrosion resistance that determines operational reliability of building constructions. Generally it is achieved due to nanoparticles that modify the structure and properties of the existing materials or products and are entered into their volume or on a surface layer. It’s theoretically and experimentally proved that the modified water has the bigger activity owing to the change of the ionic composition influencing the рН size and other parameters. As nanoparticles have a high level of surface energy, they show the increased tendency to agglomeration, meanwhile the size of agglomerates can reach several micrometers. In this regard an urgent task is to equally distribute and disaggregate the nanoparticles in the volume of tempering water. The experiments on studying of influence of the nanoparticles of silica distributed in volume of liquid by means of ultrasonic processing on characteristics of cement and sand solution and heavy concrete have been conducted. Nanoadditive influence on density, speed of strength development, final strength under compression of materials on the basis of cement depending on nanoadditive mass percent has been established.

scholarly journals The function and importance of the DCT Gdańsk in terms of intermodal transportation development in Poland

2018 ◽  
Vol 19 (6) ◽  
pp. 1068-1073
Author(s):  
Daria Kubowicz
Keyword(s):  
System Development ◽  
Technical Condition ◽  
Quality Of Services ◽  
Technical Equipment ◽  
Intermodal Transportation ◽  
Railway Transportation ◽  
Road Transportation ◽  
Transportation Development ◽  
Almost All

Intermodal transportation is becoming more and more willingly used in the goods supply chain in view of its specific, flexible characteristics. In Poland, intermodal transportation is based primarily on land-sea and rail-road transportation, using mostly containers. The most frequently used containers in 2017 were the 40-feet containers which accounted for over 57% of all containers transported. Contribution of the railway transportation in intermodal transportation is increasing every year. Despite the slow growth, both, planned as well as already carried out investments in intermodal terminals, indicate continuous growing pattern. Many operators strive to improve the technical condition of nodal and linear infrastructure that leads to raising the quality of services provided. Large number of investments aimed at improving the functioning of intermodal transportation in Poland are made by PKP PLK S.A which is the conductor rail operator. The most important of them include improvement of the railway lines technical condition of the major routes, that would increase the average operational speed. The largest intermodal terminal in Poland is the DCT Gdańsk located in the Northern Port in Gdańsk. The annual transshipment ability of the terminal after the investments made is set at 3 million TEU. The terminal is connected with the hinterland by road and rail connections. Due to high quality technical equipment it is able to serve up to 9 trains a day which adds up to almost 300 trains per month. It provides railway connection to almost all overland intermodal terminals in the country. DCT Gdańsk gladly invests in development of the railway transportation and endeavour to achieve rail system development not only at the terminal, but also throughout Poland.

Optimization of High-Precision Reaming Holes with Small Diameters

2013 ◽  
Vol 10 (2) ◽  
pp. 18-21
Author(s):  
Stanislav Fiala ◽  
Karel Kouřil ◽  
Marek Pagáč
Keyword(s):  
Cutting Speed ◽  
Small Diameter ◽  
Operational Reliability ◽  
High Productivity ◽  
High Cutting Speed ◽  
Reduced Costs ◽  
Body Components ◽  
Process Fluid ◽  
Cutting Point ◽  
Cutting Speeds

Abstract In many applications, it is at the final machining precision holes, very advantageous to use a reamer whose cutting portion is made of a cermet, but also other performance materials (PCD, CBN). In these modern tools can be compared with the instruments of conventional cemented carbides apply significantly higher cutting speeds at longer blade life cutting edges. Specific problems and significant demands on the tech-nical design and implementation of these instruments arise from their use for reaming holes with small diameters. Especially in cases where it is required to have high productivity, a high cutting speed and feed. Especially for small diameter tools it is extre-mely difficult to supply the necessary amount of process fluid to the cutting point in real time. A sufficient quantity of liquid will not only provide cooling but also chip. The requirement is to achieve high operational reliability as well as reduced costs using intensive cutting conditions. This situation helps to solve the present structural design of composite reaming tools. Specifically, the optimization of the reamer for reaming holes ø 4,2 H8 with a depth of 8 mm in body components for the automotive industry .

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