scholarly journals Development and Regression Modeling of Dirt Resistive Latex Façade Paint

Coatings ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 150 ◽  
Author(s):  
Sheraz Ahmed Qureshi ◽  
Amir Shafeeq ◽  
Aamir Ijaz ◽  
Muhammad Moeen Butt
Keyword(s):  
Regression Model ◽  
Natural Environment ◽  
Computer Programming ◽  
Raw Materials ◽  
Target Population ◽  
Pigment Volume Concentration ◽  
Laboratory Equipment ◽  
Temperature And Humidity ◽  
Paint Formulation ◽  
Available Technology

A highly dirt-resistant paint for building façades without chemicals harmful to nature and the environment would resolve the unattractive disfigurement of building walls caused by dirt. The current ranking of Pakistan in terms of air pollution is 139th. A set of dirt-resistant paint formulae was constructed with the aid of computer programming. From this set, the best dirt-resistant paint formula was explored and identified. The final determination of the optimum formulation was based on statistically planned experiments conducted in the laboratory and in a natural environment. In order to achieve high-quality results, the best available laboratory equipment were used. The results obtained were analyzed and conclusions were drawn using appropriate statistical techniques. The procedure started with the selection of appropriate raw materials and generation of a target population of 543,143 paint formulations by adopting Basic Language computer programming. The average pigment volume concentration (PVC) percentage was computed using theory and found to be 54.98% for the target population paint formulations, verifying the literature results. Experimentation and statistical analysis were performed to compare the classical conventional agitator with the latest lab equipment such as a nano mill, and it was concluded that the nano mill performs better on average than the conventional agitator in the preparation of paint formulations. Hence, the sample of paint formulations was prepared on a nano mill and tested in the laboratory using advanced available technology for the analysis and comparison of paint properties to determine the best paint formulation. The results were analyzed using the Analysis of Variance (ANOVA) technique, and it was concluded that the newly developed paint has the highest dirt resistance on average. The final selected formula, No. 50 (the newly developed paint), was compared with the three best conventional paints available in the Pakistan market in a natural environment for a period of almost one year. A regression model was also constructed to study the effect of environmental factors like time, temperature, and humidity on the dirt resistance of paints. It was found that the newly developed paint formulation is the most environmentally friendly. It performs equally well as one conventional paint and has higher dirt resistance than two other conventional paint formulations containing harmful chemicals. The regression model of dirt resistance involving variables including time, temperature, and humidity shows that these factors significantly affect the dirt resistance of a given paint at a 5% level of significance. For a given paint, 95.34% of the variation in the dirt resistance is due to and explained by the given factors. The regression model is useful for predicting the average dirt resistance of a given paint with a certain level of confidence. The project exemplifies the work of applied research from conceptualization to successful commercialization in the paint industry.

scholarly journals Development and Statistical Modeling of Dirt Resistive Latex Façade Paint

2019 ◽  
Author(s):  
Sheraz Ahmad Qureshi ◽  
Amir Shafeeq ◽  
Aamir Ijaz ◽  
Muhammad Moeen Butt
Keyword(s):  
Regression Model ◽  
Computer Programming ◽  
Raw Materials ◽  
Target Population ◽  
Temperature And Humidity ◽  
Paint Formulation ◽  
Available Technology ◽  
One Year ◽  
Level Of Significance ◽  
Building Walls

A highly dirt resistant paint for building facades without chemicals harmful to nature and environment, is developed which resolves the unattractive disfigurement of building walls caused by dirt. The experimentation is scientifically and statistically planned with the aid of computer programming. It consists of a sequence of phases which include the selection of appropriate raw materials, adopting of Basic Language computer programming to generate a target population of paint formulations. The average PVC percentage is computed using theory and found to be 54.98% for the target population of 543143 paint formulations hence verifies the literature results. Experimentation and statistical analysis are performed to compare the classical conventional agitator with latest lab equipment like Nano mill and it is concluded that Nano mill performs better on the average than conventional agitator in preparation of paint formulations. Hence the sample of paint formulations is prepared on Nano mill and tested in laboratory using advanced available technology for the analysis and comparison of paint properties to determine the best paint formulation. The results are analyzed using Analysis Of Variance Technique (ANOVA) and it is concluded that the paint formulation named “O3” has the highest dirt resistance on the average. The final selected formula O3 is compared with three other competitor paints in market under natural environment for a period of almost one year. A regression model is also constructed to study the effect of environmental factors like time, temperature and humidity on dirt resistance of paints. It is found that O3 formulation is the best environment friendly which performs equally well with one competitor paint and has higher dirt resistance than two other competitor paint formulations containing harmful chemicals. The regression model of dirt resistance on variables including time, temperature and humidity shows that these factors are significantly affecting the dirt resistance of a given paint at 5% level of significance. 95.34% variation in the dirt resistance of a given paint is due to and explained by the given factors. The regression model is useful to predict the average dirt resistance of a given paint with a certain level of confidence. The project exemplifies the work of an applied research from conceptualization to successful commercialization for the paint industry.

scholarly journals МЕТОДЫ СТАБИЛЬНЫХ ИЗОТОПОВ В ИССЛЕДОВАНИЯХ АРХЕОЛОГИЧЕСКИХ ОБЪЕКТОВ

2020 ◽  
Author(s):  
S. Rishko ◽  
◽  
G. Zaitseva ◽  
N. Burova ◽  
A. Sementsov ◽  
...  
Keyword(s):  
Elemental Analysis ◽  
Natural Environment ◽  
Raw Materials ◽  
High Accuracy ◽  
Trade Routes ◽  
Instrumental Technique ◽  
Technological Methods

Currently, many of the key archeology issues, including the questions of origin, relationships, migration and trade routes, sources of raw materials, technological methods in the processing of metals, etc., are difficult to solve by ar- cheology means alone. Progress in the field of instrumental technique regarding the advent of the latest-generation devices allows not only to perform elemental analysis of samples but also to measure with high accuracy different isotopes, which are often certain markers that characterize some components of the natural environment, provinces of habitation, diet and other important aspects of the ancient people’s habitat.

Consideration of Demographics and Variance in Regression Approaches to Estimating Body Dimensions for Spatial Analysis of Design

2010 ◽  
Vol 132 (2) ◽  
Author(s):  
Gopal Nadadur ◽  
Matthew B. Parkinson
Keyword(s):  
Regression Model ◽  
Target Population ◽  
Residual Variance ◽  
Use Of Data ◽  
Target User ◽  
Digital Human Models ◽  
And Performance ◽  
Marginal Improvement ◽  
The Military ◽  
Digital Human

A common objective in designing for human variability is to consider the variability in body size and shape of the target user population. Since anthropometric data specific to the user population of interest are seldom available, the variability is approximated. This is done in a number of ways, including the use of data from populations that are well-documented (e.g., the military), proportionality constants, and digital human models. These approaches have specific limitations, including a failure to consider the effects of lifestyle and demography, resulting in products, tasks, and environments that are inappropriately sized for the actual user population, causing problems with safety, fit, and performance. This paper explores a regression-based approach in a context where the demographic distributions of descriptors (e.g., race/ethnicity, age, and fitness) are dissimilar for the database and target population. Also examined is a stratified regression model involving the development of independent anthropometry-estimation models for each racial group. When using regression with residual variance, stratification on the predictor demographics to obtain estimates of gender, stature, and BMI distributions is shown to be sufficiently robust for usual database-target population combinations. Consideration of demographic variables in development of the regression model provides marginal improvement, but could be appropriate in specific situations.

Development of Innovative Technology for Cryogenic Grape Powders and Drinks

2021 ◽  
pp. 24-28
Author(s):  
Зоя Алиевна Яралиева
Keyword(s):  
Raw Materials ◽  
Food Additives ◽  
Climatic Conditions ◽  
Innovative Technology ◽  
High Quality ◽  
Laboratory Equipment ◽  
Scientific Center ◽  
Analytical Instruments ◽  
Organoleptic Characteristics ◽  
The Republic

Климатические условия на большей части территории Российской Федерации не позволяют выращивать виноград в открытом грунте, поэтому его завозят из южных районов страны. Производство виноградных напитков обычно сосредоточено в местах выращивания винограда, так как доставка готовой продукции в северные регионы сопряжена со значительными финансовыми затратами. В Республике Дагестан выращивают около 30% винограда в масштабах всей страны, а площадь плодоносящих виноградников занимает более 20 тыс. га. Возникла необходимость переработать виноград таким образом, чтобы полуфабрикат для изготовления напитков выдерживал длительные сроки хранения и транспортировку, отличался высоким качеством и имел небольшую массу. Разработана технология получения виноградных криопорошков, которые можно использовать в качестве пищевых добавок, для изготовления восстановленных соков и напитков. Целью исследования было создание инновационной технологии производства криопорошков для получения безалкогольных напитков. Объектом исследования стал виноград дагестанских технических, столовых и изюмных сортов. Алгоритм получения криопорошков соответствовал предложенной автором схеме: доставка винограда, отделение гребней, инспекция, мойка, дробление, замораживание жидким азотом, обезвоживание в вакуумной СВЧ-установке, криоизмельчение и фасовка. При выполнении работы определяли качественный состав сырья и криопорошков с использованием аналитических приборов и лабораторного оборудования кафедры технологии продуктов питания и учреждений Дагестанского научного Центра РАН. Определен химический состав криопорошков, полученных из винограда, выращенного в горно-долинной зоне Дагестана. Приведены физико-химические показатели напитка из криопорошка винограда. Органолептические показатели изготовленных виноградных напитков подтвердили их высокие качественные показатели. Climatic conditions in most of the Russian Federation do not allow growing grapes in the open field, therefore they are imported from the southern regions of the country. The production of grape drinks is usually concentrated in places where grapes are grown, since the delivery of finished products to the northern regions is associated with significant financial costs. Winegrowers of the Republic of Dagestan grow about 30% of grapes throughout the country, and the area of fruit-bearing vineyards occupies more than 20 thousand hectares. There was a problem to process grapes in such a way that the semi-finished product for the production of drinks withstands long storage and transportation periods, is of high quality and has a small weight. A technology has been developed for producing grape cryopowders, which can be used as food additives, for the production of reconstituted juices and drinks. The aim of the study was to create an innovative technology for the production of cryopowders for the production of soft drinks. The objects of the study were Dagestan common and raisin grapes. The algorithm for obtaining cryopowders corresponded to the scheme proposed by the author: delivery of grapes, separation of ridges, inspection, washing, crushing, freezing with liquid nitrogen, dehydration in a vacuum microwave unit, cryo-grinding and packaging. When performing the work, the qualitative composition of raw materials and cryopowders was determined using analytical instruments and laboratory equipment of the Department of Food Technology and institutions of the Dagestan Scientific Center of the Russian Academy of Sciences. The chemical composition of cryopowders obtained from grapes grown in the mountain-valley zone of Dagestan has been determined. The physical and chemical parameters of a wine drink made from grape cryopowder are given. The organoleptic characteristics of the produced wine drinks confirmed their high quality indicators.

scholarly journals A new paradigm of development as a modern challenge in agriculture

Management ◽  
2014 ◽  
Vol 18 (1) ◽  
pp. 460-472 ◽  
Author(s):  
Andrzej Czyżewski ◽  
Bazyli Czyżewski
Keyword(s):  
Natural Environment ◽  
Industrial Development ◽  
Agricultural Development ◽  
Agricultural Land ◽  
Raw Materials ◽  
Agricultural Economics ◽  
New Paradigm ◽  
Land Rent ◽  
Public Character ◽  
Development Paradigm

Summary The authors of the paper propose a thesis of a necessary change of an industrial development paradigm of agriculture to a socially sustainable one. They present the mechanism of functioning of the first one proving that by stimulating the growth of production of agricultural raw materials it leads to a decreasing marginal productivity and, as a result, to lower incomes of farmers in the conditions of incomplete internalisation of costs. The pressure on natural environment leads to the deterioration of the natural environment welfare. Therefore, the change of that paradigm to the socially sustainable one is necessary. The effects of that model, which exceed the productive and economic sphere, were presented. They take into account the fact that agriculture is also a supplier of public goods. In that case a new concept of a land rent was included, assuming that the agricultural land independently creates a part of a land utility which is subject to market or institutional valorisation if it is limited to some extent of intensity of agricultural economics. However, there must be a declaration of a social demand for that utility of a public character. That process has already started and it determines the evolutionary change of the paradigm of the agricultural development.

Multiple Fortification of Beverages

1998 ◽  
Vol 19 (2) ◽  
pp. 168-171 ◽  
Author(s):  
Denis Barclay
Keyword(s):  
Vitamin A ◽  
Raw Materials ◽  
Cost Effective ◽  
Target Population ◽  
Micronutrient Deficiencies ◽  
Organoleptic Characteristics ◽  
Multiple Micronutrient ◽  
Materials Used ◽  
Processing And Storage ◽  
And Storage

Diet-related micronutrient deficiencies rarely occur in isolation; deficiencies of iodine and vitamin A or of iron and vitamin A or zinc are often observed in the same populations. In addition, widespread deficiencies of some micronutrients, for example, zinc and calcium, may often go undiagnosed because of the absence of specific and sensitive status indicators. Multiple micronutrient supplementation can be more effective in improving nutritional status than supplementation with single key micronutrients; therefore, the multiple fortification of appropriate food vectors, including beverages, is of interest from the nutritional standpoint. Beverages fortified with multiple micronutrients include dairy products, chocolate beverages, fruit juices, and soya-based drinks. As well as the documented or estimated micronutrient deficiencies and the requirements of the target population or consumer group, the conception of such a multiply fortified beverage must take into account a number of other important factors. The choice of the chemical form of the fortification micronutrients should be made with consideration of bioavailability, the effects on the organoleptic characteristics of the particular beverage, and cost. The initial calculation of the composition of the micronutrient premix should include the levels of micronutrients in the raw materials used and the estimated losses of specific micronutrients during processing and storage. Preliminary production and storage trials are then needed to determine the actual losses. The composition of the micronutrient premix may then be finalized. Interactions, both positive and negative, between fortification micronutrients may also need to be considered. For example, the bioavailability of iron may be enhanced by the addition of vitamin C, whereas mineral–vitamin and vitamin–vitamin interactions can accelerate the destruction of some vitamins. To render quality control procedures simple and cost-effective, only a limited number of fortification micronutrients, which are especially sensitive to losses and which are easy to measure, may be analysed. Simple, inexpensive, and rigorous analytical methods for such measurements are now available.

scholarly journals Penanganan berbagai Tingkat Kelengketan pada Alat gelas di Laboratorium dari Pengaruh Basa kuat Larutan NaOH beserta Ujinya

2020 ◽  
Vol 2 (1) ◽  
pp. 19-25
Author(s):  
Sri Harjanto ◽  
Indra Gunawan
Keyword(s):  
Raw Materials ◽  
Detergent Solution ◽  
Test Results ◽  
Immersion Method ◽  
Laboratory Equipment ◽  
Laboratory Personnel ◽  
Daily Work ◽  
Base Solution ◽  
Naoh Solution ◽  
Time Periods

As PLP (Educational Laboratory Institution) or other laboratory personnel for their daily work, they are very closely related to the tools and materials in the laboratory scope, and cannot be separated from laboratory equipment in the form of instruments or glassware. The problem here is that there are times when we encounter glassware in the scope of a laboratory whose faucet is closed or the faucet cannot be opened because it is sticky, and on average it is used after using NaOH base solution. That is why we are here to try to do a test to find out how much the stickiness of a device made from glass raw materials. By using variable various levels of concentration of NaOH solution with different time periods. As a decay the detergent solution is also used in various levels of concentration and heating. . From the data of the stickiness level test results using variable concentrations of NaOH solution and detergent solution will get the results that with the increasing concentration of NaOH solution, the stickiness will also be stronger. Likewise with the passage of time the longer the NaOH solution comes into contact with materials made of glass, the harder it will become and the stickiness will also be stronger so that it will be more difficult to be released. while on a strong adhesiveness will be more effective when using the immersion method at a temperature of 60-70 ° C.

scholarly journals Mediating Effect of Students’ Perception in Programming on the Relationship Between Project Work and College Students’ Interest in Programming

2021 ◽  
Author(s):  
Isaac Ampofo Atta Senior
Keyword(s):  
College Students ◽  
Computer Programming ◽  
Survey Design ◽  
Target Population ◽  
Mediating Effect ◽  
Project Work ◽  
Cape Coast ◽  
Total Contribution ◽  
And Mathematics ◽  
The Relationship

Abstract Computer programming has been a subject of debate, whether students have an interest or not. Students' impressions of their own abilities to program and of programming in general are influenced by their early programming experiences, which play a role in encouraging or discouraging students' interest in computing areas. As a result, project work as a method of teaching has been adopted by many lecturers in teaching computer programming. However, the study sought to assess the mediating influence of students' perception in the relationship between project work and college students' interest in programming. The study used a descriptive survey design. The target population for the study included all Computer Science and Mathematics students at the University of Cape Coast, Ghana. The population for the study was 2,410 students with a sample size of 332. The researcher used a questionnaire to gather the data for studying the issue under investigation. Analysis of the data was done through the use of the PROCESS Macro. The results revealed that the mediating effect of students’ perception of programming on the relationship between project work and college students’ interest in programming accounts for only 0.34% of the total contribution of factors that influence college students’ interest in programming.

scholarly journals Assessing the possibility of using dry concentration for oxidized pegmatite and granites at the Kedrovoe feldspar deposit

2021 ◽  
Vol 1 (7) ◽  
pp. 45-54
Author(s):  
Tatiana A. Buzunova ◽  
◽  
Varvara N. Shigaeva ◽  
Keyword(s):  
Raw Materials ◽  
Raw Material ◽  
Processing Plant ◽  
Resource Saving ◽  
Laboratory Equipment ◽  
Flotation Reagents ◽  
Feldspar Concentrate ◽  
Silica Alumina ◽  
Concentration Methods ◽  
Tailings Ponds

Introduction. Feldspar raw material is a natural source of silica, alumina, and alkali metal oxides. Each type of feldspar is distinguished by its applications and concentration methods. The main effective method of feldspar raw material concentration is flotation in the course of which the majority of harmful impurities are separated. However, this method is rather costly due to flotation reagents purchase, tailings ponds organization and maintenance, etc. Research relevance. Feldspar dry concertation technologies are promising in terms of resource-saving but uncommon. So, the development of a dry concertation technology for feldspar raw materials seems highly relevant. Research objective is to study the possibility of employing dry concentration technology to process feldspar raw materials at the new Kedrovoe deposit Methods of research. Laboratory equipment of JSC Uralmekhanobr was used for the research, namely centrifugal crusher DC-0.5; centrifugal deflection mill; laboratory-scale cascade classifier; dry electromagnetic separator SMS-20M ITOMAK, and tribo electrostatic separator. Results. The trials confirmed that it is possible to process Kedrovoe feldspar raw materials by dry methods and effectively use centrifugal crushing and grinding as preparation of raw materials for concentration. Feldspar concentrate with a mass fraction of Fe2O3 – 0.30%; SiO2 – 69.42%; Al2O3 – 17.36%; K2O + Na2O – 11.84% has been obtained, which meets the specifications. Conclusions. The technological studies confirmed the possibility in principle of using feldspar raw material dry concentration for oxidized pegmatite and granites of the Kedrovoe deposit at the processing plant of Malyshevskoe Ore Management JSC. Saleable feldspar concentrate has been obtained.

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