scholarly journals SYNTHETIC DYES IN MEDICINE

2021 ◽  
Vol 297 (3) ◽  
pp. 168-172
Author(s):  
O. HARANINA ◽  
YA. RED’KO ◽  
M. PROSKURKA ◽  
R. VATAN ◽  

Synthetic dyes and intermediates for their synthesis are widely used in dyeing textile materials. The presence of the necessary functional groups in the structure of the dyes provides their biocidal properties. When using dyes with biocidal properties, the surface of textile materials is seized from destruction. Separate representative dyes protect the human body from the action of pathogenic microflora. It is necessary to create conditions for a timely attack by the textile material on bacteria and fungi. A sufficient number of natural and synthetic compounds exhibit antimicrobial activity. Many of these compounds are hazardous to humans and animals. Only a few chemical compounds can be recommended for practical use as antiseptic preparations. The inclusion of even a small fraction of antibacterial fibers in the structure of textile materials can provide the desired properties. The biostability of fibrous materials is influenced by the choice of dye. Not all dyes that have bactericidal activity in their pure form exhibit it when applied to textile material. For the manifestation of these functions, dyes must have groups responsible for their bacteriological activity. In developed countries, attempts are being made to uniform dyeing and bioprotective processing of textile materials. The combination of these processes is not only theoretical but also a promising area of ​​research. When creating antibacterial textile materials, nanotechnology is being actively introduced. The use of nanotechnology reduces the cost of raw materials and materials. At the same time, the most promising for use in medicine are nanomaterials that meet the following requirements, such as biocompatibility and programmability of a positive effect on a biological object. Thus, the article analyzes the scientific literature in the field of dyes with biocidal properties.

2020 ◽  
Vol 12 (2) ◽  
pp. 719
Author(s):  
Ali Amiri ◽  
Juudit Ottelin ◽  
Jaana Sorvari ◽  
Seppo Junnila

Buildings use 30–40% of all energy resources and are thus the main consumers in modern society. Moreover, buildings require a vast amount of different raw materials. During the last two decades, several green building certifications have been created in order to consider the social, economic, and environmental aspects of the sustainability of buildings. One of the most famous and widely used of these certifications is Leadership in Energy and Environmental Design (LEED). So far, the use of LEED has concentrated in the US and other developed countries. One reason that restricts the use of this point-based system certification in developing countries is the limited data about its costs. In this study, the extra cost of the certification process were evaluated, besides the changes needed in the design of the building to reach the points required by LEED. At the first stage, the number of points the case study earns in its current format (Scenario 1) were assessed, then the cost difference of getting either the Certified (Scenario 2) or Silver (Scenario 3) level LEED certification for the building was studied. It was found that besides some technical considerations, filling the criteria of the Certified and Silver level increases the total costs of construction by 3.4% and 5.9%, respectively. Further improvement of the building’s energy efficiency would enable the attainment of a higher-level certification. The results of the study could help to promote the use of green building certifications in Western Asia.


PEDIATRICS ◽  
1975 ◽  
Vol 56 (1) ◽  
pp. 81-81

Recent statements argue that we in the developed countries are in effect in a lifeboat, well supplied with resources, while many other countries are in other lifeboats without resources such as food. They argue that we should withhold these resources or risk future destruction from depletion of our own resources. As grim as this policy seems, it has many advocates today. What should the passengers on the rich lifeboat do? In answer Callahan argues that we cannot turn away from the needs of the developing countries no matter how seductive that course may seem now. For one thing, we are dependent on raw materials from them. But, more important, he points out that to bequeath a civilization of morality to our children is an even greater need, and we cannot do that by selfish isolation. "If we are to worry about our duty to posterity, it would not hurt to ask what kind of moral legacy we should bequeath. One in which we won our own survival at the cost of outright cruelty and callousness would be tawdry and vile."


Author(s):  
Ali Amiri ◽  
Juudit Ottelin ◽  
Jaana Sorvari ◽  
Seppo Junnila

Buildings use 30-40 % of all energy resources and are thus their main consumers in modern society. Moreover, buildings require a vast amount of different raw materials. During the last two decades, several green building certifications have been created in order to consider social, economic and environmental aspects of sustainability of buildings. One of the most famous and widely used of these certifications is Leadership in Energy and Environmental Design (LEED). So far, the use of LEED has concentrated in the US and other developed countries. One reason that restricts the use of this point-based system certification in developing countries is the limited data about its costs. In this study, the extra cost of the certification process will be evaluated besides the changes needed in the design of the building to reach the points required by LEED. At the first stage, the number of points the case study earns in its current format (Scenario 1) were found out, then the cost difference of getting either the Certified (Scenario 2) or Silver (Scenario 3) level LEED certification for the building was studied. It was found that besides some technical considerations, filling the criteria of the Certified and Silver level increases the total costs of construction by 3.4% and 5.9%. Further improvement of the building’s energy efficiency would enable the attainment of a higher-level certification. The results of the study could help to promote the use of green building certifications in Western Asia.


Author(s):  
Nibedita Naha ◽  
Gokul Manickavachagam

Textile industry is one of the primarily concerned industries in the world generating huge revenues where both the skilled and unskilled labours are employed. Raw materials are mainly synthetic chemicals rather than the natural one. Several bleaching agents, additives are also used to get sufficiently high and uniform degree of whiteness in the textile materials. Environmental contamination is also common by the textile effluents. All these substances are mutagenic and carcinogenic, and cause enormous health hazards to humans, animals, and aquatic lives. Infertility, implantation failure, and miscarriage due to exposure to dyes, dye intermediates, and other raw materials are major concern worldwide as integrity of both the male and female gametes are massively affected by them. However, little or no attention has been paid in real life scenario, mainly in the developing and under developed countries including adaptation of successful and advanced mitigation strategies. Therefore, the chapter highlights the common issues and possible remedial measures of the textile industry exposure with respect to fertility potential and pregnancy outcome.


Tekstilec ◽  
2021 ◽  
Vol 64 (1) ◽  
pp. 32-46
Author(s):  
Thomas Grethe ◽  

Biodegradable polymers are currently discussed for applications in different fields and are becoming of increasing interest in textile research. While a plethora of work has been done for PLA in medical textiles, other biodegradable polymers and their textile application fields are studied less often, presumably due to higher costs and fewer market opportunities. However, some are emerging from research to pilot scale, and are already utilized commercially in packaging and other sectors but not, unfortunately, in textiles. The commercialisation of such polymers is fuelled by improved biotechnological production processes, show¬ing that textile applications are increasingly conceivable for the future. Additionally, commonly accepted definitions for biodegradability are probably misleading, if they are used to estimate the environmental burden of waste management or recycling of such materials. In this review, the current state of research in the field of biodegradable polymers for the application in textile materials is presented to identify emerging developments for new textile applications. It was clearly seen that PLA is most dominant in that field, while others facilitate new options in the future. The production costs of raw materials and the current patent situation are also evaluated. A special focus is placed on fibre raw materials, coatings, and additives for clothing and technical textiles. Fibre-reinforced composites are excluded, since polymers applied for the matrix component require very different properties compared to the textile materials. This represents a topic to be discussed separately. As a result, these new biodegradable polymers might serve as interesting coating materials for textiles that seem to sneak on to the textile market, as the patent search for such coating formulations suggests. Moreover, new biodegradable fibrous materials for clothing applications can be suggested, but some material properties must be addressed to render them processable on common textile machines.


2019 ◽  
Vol 16 (3) ◽  
pp. 334-351
Author(s):  
A. S. Mavlyanov ◽  
E. K. Sardarbekova

Introduction. The objective of the research is to study the effect of the complex activation of the alumina raw material on the rheological properties of the ceramic mass. In addition, the authors investigate solutions for the application of optimal coagulation structures based on loams and ash together with plastic certificates.Materials and methods. The authors used the local forest like reserves of clay loams at the BashKarasu, ash fields of the Bishkek Central Heating Centre (BTEC) and plasticizer (sodium naphthenate obtained from alkaline chemical production wastes) as fibrous materials. Moreover, the authors defined technological properties of raw materials within standard laboratory methodology in accordance with current GOSTs.Results. The researchers tested plastic durability on variously prepared masses for the choice of optimal structures. The paper demonstrated the plastic durability of complexly activated compounds comparing with non-activated and mechanically activated compounds. The sensitivity coefficient increased the amount of clay loams by mechanically and complexly activated, which predetermined the possibility of intensifying the process of drying samples based on complexly activated masses.Discussion and conclusions. However, mechanical activation of clay material reduces the period of relaxation and increases the elasticity coefficient of ceramic masses by 1.8–3.4 times, meanwhile decreases elasticity, viscosity and the conventional power during molding, which generally worsens the molding properties of the masses. Сomplex activation of ash-clay material decreases the period of relaxation and provides an increase in elasticity, plasticity of ceramic masses by 46–47%, reduction in viscosity by 1.5–2 times, conventional power on molding by 37–122% in comparison with MA clay loams. Ceramic masses based on spacecraft alumina raw materials belong to the SMT with improved rheological properties; products based on them pass through the mouthpiece for 5–7 seconds.


1982 ◽  
Vol 21 (4) ◽  
pp. 329-333
Author(s):  
Rashid Aziz

The book under review is a concise but fairly in-depth study of the prospects for export diversification from the Less Developed Countries (henceforth labeled as LDCs) particularly to Developed Countries (henceforth labeled as OCs). Given the multiple problems faced by the LOCs in exporting to the OCs - protectionist policies with regards to manufactured exports, volatility of prices obtained for raw material exports, etc. - the study analyses the potential for following an intermediate route. The important issues in the export of semi -processed and wholly processed raw materials are discussed. 111ese issues range from the problems and potentials for the location of processing facilities in the LOCs to the formulation of appropriate policies to encourage an export of processed goods rather than raw materials. Such policies will be useful both in solving the balance of-payments problems of the LDCs and in attaining the goal of the Lima Declaration and Plan of Action on Industrial Development and Co-operation, that called for 2S percent of world industrial production to be located in the LOCs by the year 2000.


Author(s):  
SAFITRI NURHIDAYATI ◽  
RIZKI AMELYA SYAM

This study aims to analyze whether the difference that occurs in the cost of raw materials, direct labor, and factory overhead costs between the standard costs and the actual costs in PLTU LATI is a difference that is favorable or unfavorable. Data collection techniques with field research and library research. The analytical tool used is the analysis of the difference in raw material costs, the difference in direct labor costs and the difference in factory overhead costs. The hypothesis in this study is that the difference allegedly occurs in the cost of raw materials, direct labor costs, and factory overhead costs at PT Indo Pusaka Berau Tanjung Redeb is a favorable difference. The results showed that the difference in the cost of producing MWh electricity at PT Indo Pusaka Berau Tanjung Redeb in 2018, namely the difference in the price of raw material costs Rp. 548,029.80, - is favorable, the difference in quantity of raw materials is Rp. 957,216,602, - is (favorable) , the difference in direct labor costs Rp 2,602,642,084, - is (unfavorable), and the difference in factory overhead costs Rp 8,807,051,422, - is (favorable) This shows that the difference in the overall production cost budget is favorable or profitable. This beneficial difference shows that the company is really able to reduce production costs optimally in 2018.  


Author(s):  
Mahesh K. Joshi ◽  
J.R. Klein

The twenty-first century is being touted as the Asian century. With its stable economy, good governance, education system, and above all the abundant natural resources, will Australia to take its place in the global economy by becoming more entrepreneurial and accelerating its rate of growth, or will it get infected with the so-called Dutch disease? It has been successful in managing trade ties with fast-developing economies like China and India as well as developed countries like the United States. It has participated in the growth of China by providing iron ore and coal. Because it is a low-risk country, it has enabled inflow of large foreign capital investments. A lot will depend on its capability and willingness to invest the capital available in entrepreneurial ventures, its ability to capture the full value chain of natural resources, and to export the finished products instead of raw materials, while building a robust manufacturing sector.


2019 ◽  
Vol 5 (3) ◽  
pp. 266-271
Author(s):  
Andre Lamy ◽  
Eva Lonn ◽  
Wesley Tong ◽  
Balakumar Swaminathan ◽  
Hyejung Jung ◽  
...  

Abstract Aims The Heart Outcomes Prevention Evaluation-3 (HOPE-3) found that rosuvastatin alone or with candesartan and hydrochlorothiazide (HCT) (in a subgroup with hypertension) significantly lowered cardiovascular events compared with placebo in 12 705 individuals from 21 countries at intermediate risk and without cardiovascular disease. We assessed the costs implications of implementation in primary prevention in countries at different economic levels. Methods and results Hospitalizations, procedures, study and non-study medications were documented. We applied country-specific costs to the healthcare resources consumed for each patient. We calculated the average cost per patient in US dollars for the duration of the study (5.6 years). Sensitivity analyses were also performed with cheapest equivalent substitutes. The combination of rosuvastatin with candesartan/HCT reduced total costs and was a cost-saving strategy in United States, Canada, Europe, and Australia. In contrast, the treatments were more expensive in developing countries even when cheapest equivalent substitutes were used. After adjustment for gross domestic product (GDP), the costs of cheapest equivalent substitutes in proportion to the health care costs were higher in developing countries in comparison to developed countries. Conclusion Rosuvastatin and candesartan/HCT in primary prevention is a cost-saving approach in developed countries, but not in developing countries as both drugs and their cheapest equivalent substitutes are relatively more expensive despite adjustment by GDP. Reductions in costs of these drugs in developing countries are essential to make statins and blood pressure lowering drugs affordable and ensure their use. Clinical trial registration HOPE-3 ClinicalTrials.gov number, NCT00468923.


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