Gotowa bibliografia na temat „Colas Products Limited”

Coke is used in the blast furnace as a fuel. To produce the coke, metallurgical coals are blended in the coal blend. But the reserves of the coking coals are limited in India. Hence, there is a need to use the non-coking coals in the blast furnace. However, there is a limitation for use of non-coking coals in the coal blend for coke making. So, an attempt was made in this study to increase the amount of non-coking coals in the coal blends. In the present work, briquetting technique was used for producing briquettes having non-coking coal up to 40%, and rest is slightly coking coal along with reactive materials and binders. Those samples were compressed in a hydraulic press to form briquettes which were then carbonized. The strength and reactivity tests of those coal briquettes were carried out to determine the optimum addition proportion of reactive materials and binders. It was found that 10% of reactive material was optimum for briquette making. The use of coal tar pitch and petroleum pitch binders were also studied, and their optimum values were obtained as 3%. It was also found that coal briquettes comprising of LD (Linz-Donawitz) slag and iron oxide exhibited higher reactivity as compared to other reactive materials.

Hepatitis C virus (HCV) infection can be cured with pan-genotypic direct-acting antiviral agents. However, identifying individuals with current hepatitis C remains a major challenge, especially in resource-limited settings where access to or availability of molecular tests is still limited. The goal of this study was to develop and validate a molecular assay for the rapid detection of HCV RNA in resource-limited settings. It is based on a combination of reverse transcription loop-mediated isothermal amplification (RT-LAMP) with the clustered regularly interspaced short palindromic repeats–CRISPR-associated protein 12a (CRISPR–Cas12a) cleavage assay that allows the recognition of specific HCV nucleic acid sequences. Amplified products after the cleavage reactions can be visualized on lateral flow strips or measured with a fluorescence detector. When tested on clinical samples from individuals infected with HCV, HIV, or HBV, or from healthy donors, the RT-LAMP-coupled CRISPR–Cas12 assay yielded 96% sensitivity, 100% specificity, and 97% agreement as compared to the reference method (Roche COBAS AmpliPrep/COBAS TaqMan HCV Test). This assay could detect HCV RNA concentrations as low as 10 ng/µL (an estimated 2.38 Log10 IU/mL). Therefore, this sensitive and specific assay may represent an affordable and reliable point-of-care test for the identification of individuals with active hepatitis C in low-resource settings.

Critics have long accused food and beverage companies of trying to exonerate their products from blame for obesity by funding organisations that highlight alternative causes. Yet, conclusions about the intentions of food and beverage companies in funding scientific organisations have been prevented by limited access to industry’s internal documents. Here we allow the words of Coca-Cola employees to speak about how the corporation intended to advance its interests by funding the Global Energy Balance Network (GEBN). The documents reveal that Coca-Cola funded and supported the GEBN because it would serve as a ‘weapon’ to ‘change the conversation’ about obesity amidst a ‘growing war between the public health community and private industry’. Despite its close links to the Coca-Cola company, the GEBN was to be portrayed as an ‘honest broker’ in this ‘war’. The GEBN’s message was to be promoted via an extensive advocacy campaign linking researchers, policy-makers, health professionals, journalists and the general public. Ultimately, these activities were intended to advance Coca-Cola’s corporate interests: as they note, their purpose was to ‘promote practices that are effective in terms of both policy and profit’. Coca-Cola’s proposal for establishing the GEBN corroborates concerns about food and beverage corporations’ involvement in scientific organisations and their similarities with Big Tobacco.

The paper presents the method of selection of hard coals applied in reducing mixtures used in ferroalloy production technologies. The graphical relationship between reflectivity and reactivity towards SiO as well as reflectivity and the content of hard carbon Cfix has been presented. The use of hard coal in place of coke is associated with the release of significant amounts of volatiles contained in the coal. Increasing the amount of volatile matter may favor the increased generation of NOx from the fuel mechanism due to the nitrogen content in the organic matter of coal. The influence of the thermal mechanism of NOx generation may be limited due to contradictory phenomena. On the one hand, it is possible to have a higher calorimetric combustion temperature of post-reaction gases (due to the content of coal degassing products), and on the other hand, reducing the amount of energy released from SiO afterburning (less SiO due to higher silicon yields). The higher yield of silicon is related to the higher reactivity of appropriately selected hard coals. The mechanisms of NOx formation were presented together with measurements made during the production of the most popular ferroalloy FeSi75. Measurements were carried out along the two axes P1 and P2 in the furnace hood at three distances from the center of the pitch diameter of the electrodes.

Various methods of laser pyrolysis have been used by researchers to investigate at a molecular level the chemistry of dispersed organic matter. An understanding of molecular composition is important for evaluations of oil generation potential and maturation levels of source rocks. Laser-based pyrolysis-mass spectrometry studies as applied to petroleum source rocks and coals are reviewed. Experiments undertaken to date involve three main techniques: (i) laser ionisation-mass spectrometry; (ii) laser pyrolysis-gas chromatography-mass spectrometry; and (iii) laser desorption-electron im-pact-mass spectrometry. These techniques have had variable degrees of success for detecting structurally significant hydrocarbon products. Typically assessed through comparison with conventional flash pyrolysis data, the relative merits of the different techniques are described.The most powerful analysis is obtained through the combined use of chromatographic separation and mass spectrometry. The emergence of the laser pyrolysis-gas chromatography-mass spectrometry technique offers enormous potential for various geochemical applications. Laser pyrolysis in conjunction with a microscope (micropyrolysis) allows analysis of specific organic entities, thereby avoiding the masking of individual properties through bulk analysis. However, laser micropyrolysis-gas chromatography-mass spectrometry has not been widely accepted because of the complexities inherent in interfacing the required hardware devices and the high cost of laser instruments compared with conventional pyrolysers. Chromatography also adds cost with regard to both instrumentation and analysis time. Unfortunately, the ability of laser ionisation to provide insights into molecular structure is severely limited by a predominance of carbon cluster ions from highly carbonaceous materials.In contrast, the laser desorption-electron impact ionisation routine yields large ion concentrations of aliphatic and aromatic products. Sufficient information has been obtained with this method to distinguish source rocks and coals of different organic composition.

The rising emphasis on self-care and wellness has led the beverage industry to witness substantial growth, reaching $95.44 million in revenue by 2024, with an annual growth rate of 10.79%. To stay competitive, companies are compelled to focus not only on product innovation but also on effective pricing strategies for new products. The research examines the impact of new product pricing strategies on customer patronage in Nigeria's beverage market, specifically targeting Coca-Cola's Starlight and Coffee Mocha products. By adopting an exploratory research design, online survey data was gathered from 400 Coca-Cola consumers through structured questionnaires measured by a five-Likert rating scale, resulting in a 96.75% response rate. Statistical analyses, including descriptive statistics, ANOVA, and linear regression, were conducted using the SPSS version with an R2 of 64.7% (for customer loyalty) and 51.4% (for brand image), respectively, underscoring the statistical relationship between the research variables. The findings revealed a positive correlation between new product pricing strategies and customer patronage using game and naïve pricing theories, with a p-value of 0.803 (for customer loyalty) and 3.341 (for brand image), respectively exceeding the benchmark of 0.50 as a significant level. The research concludes that companies should strike a balance between skimming and penetration pricing strategies to ensure long-term success, which in turn shapes customer loyalty and fosters a positive brand image. The research recommends that Coca-Cola should use skimming and penetration pricing strategies as a tool to optimise consumer satisfaction and market objectives by conducting regular market research to understand consumer perceptions and tailoring skimming and penetration pricing strategies to specific market segments based on their purchasing power and preferences. The research recognises the potential for biases in data collection arising from unequal online access among Coca-Cola consumers in Nigeria. This may result in a limited representation of diverse consumer behaviours, as varied cultural, economic, and social dynamics influence purchasing behaviours across Africa and other continents in the world.

Coalbed methane (CBM) is going to be an important facet of the nation’s energy mix. It is expected to contribute in importance energy back up for the future. CBM is natural gas, a clean-burning energy source that is reservoired in a coal seam. CBM is formed during the coal maturation process and may in a free or adsorbed state in coal seams in adjacent formations. CBM is dominantly methane but lesser concentrations of carbon dioxide and nitrogen, compare to conventional natural gas. However, in most cases, CBM is of sufficient quality for sale directly into natural gas transmission lines with a limited amount of moisture removal.CBM as natural gas has numerous benefits to include direct selling, well suited as city gas, electricity generation, boiler fuel, transportation fuel, and for many types of chemical industries feed. Beside CBM replaces coal to be greatly reduces the production of acid rain and other forms of air pollution, the development of CBM has benefitial for coal miners. It can contribute to improved mining safety as well as it can help reduce construction costs.CBM is probably one of the promising alternative fuel energy resources in Indonesia that its presence is actual and comparable with the existing coal resources in any potential basin. Unlike some well in developed countries where commercialization of methane production from coal seam has been developed, coals direct mined in Indonesia seem to be more attractive and preferable technique to supply the consumer demand of energy. This is because coal mines serve direct products, less complicated technology, low exploration risks, easy recovery, relatively low cost but quick yields and already have wide market. Consequently, people have overlooked the existence of consisting huge potential methane gas in coals.However, petroleum exploration data throughout Indonesia suggest that increasing coal rank occurs rapidly with depth in many basins and that gas kicks are almost common associated with some coal seams below 200 m depth. In addition, world CBM exploration now has shifted towards lower rank settings (i.e, vitrinite reflectance between 0.3% and 0.6% Ro). In Indonesia, thick coals generally are found at greater depth, higher in rank and therefore are expected to be more productive (Saghafi and Hadiyanto, 2000).LEMIGAS is currently conducting a drilling program to study the feasibility of CBM production in South Sumatra. The domain of the work is in the Muaraenim Formation (Upper – Middle Palembang). The coal sequences were deposited during Late Miocene. We believe that a big effort is extremely essential to establish the reserve and economic potential of CBM in South Sumatra to later extent to Indonesia.

Introduction. Sulfur is found in the organic and mineral parts of all types of solid fuels, and its concentration determines the extent of the hazardous characteristics of mine seams. Therefore, research on the determination of sulfur content in fossil fuels has not lost its relevance. The total sulfur content and its varieties has been studied in most cases in terms of the efficiency of fuel processing processes, the quality and environmental safety of coal products. Less attention was paid to the hazardous properties of mine seams, forecasting and developing preventive measures for endogenous fires in coal mines. This work aims to develop an engineering method to calculate the elemental sulfur content in the mineral mass of coal to predict the hazardous properties of mine seams.Materials and Methods. According to the results of the correlation analysis, we established how the sulfur content in the combustible part of the fuel depended on the total sulfur. We analyzed data on coals from almost all mine seams of the Donetsk and Lviv-Volyn coal basins. We presented the ash ratios for the formation and basin samples, as well as the information about the total sulfur and sulfur content in the combustible part. This allowed us to estimate the sulfur content in mineral impurities by calculation. The initial data for developing the method were taken from reference and regulatory documents.Results. Seven sets were considered, which included from 149 to 1827 mine seams. For each, reference and calculation data were summarized:- sulfur content — total (Std) and in the combustible part of the fuel (Sг);- conditional points for adjusting the indicators to avoid obtaining negative average values;- empirical equations that describe the calculated and corrected dependencies based on the ratio of Std and Sг;- correlation of these indicators;- ranges of change in ash yield.All this information was presented for clean and raw coals, for ash yields of more and less than 10%. In one case, satisfactory results were noted for determining the calculated sulfur content in a conditionally non-combustible mass. This was a set of 149 mine layers. For 13 of them, the difference in indicators (Std – Sг) was greater than or equal to zero. For 136 — less than zero. For 81, the sulfur content in the conditionally non-combustible part of the fuel Sн was less than zero. At the same time, there was a sufficient level of correlation (0.79) and a limited range of changes in ash yield (2.4–10). The empirical equation corresponding to this set was recommended for predicting the hazardous properties of mine seams with an ash yield of less than 10%.Discussion and Conclusion. The results of this study can be used to improve regulations for the safe conduct of mining activities, taking into account sulfur content in organic matter and in mineral impurities of fossil coal.

Global development and scientific and technological progress are intensifying the use of mineralraw materials (MRMs)—the necessary basis for the production of high-tech products. The advanced producing countries of these products are in dire need of various raw materials, which are critical and, as a rule, are supplied from third countries. Strategic is a mineral raw material, which is of particular importance for ensuring the economic development of the country, its defense and security. Due to the complex structure of extraction, processing and consumption of raw materials, many of its types are in short supply. In the world literature, the concept of “deficient MRMs” in its content most closely corresponds to “critical MRMs,” that is, raw materials that are critically needed for industry and are characterized by a significant risk of their supplies. Most critical raw materials are needed for production promising high-tech industrial products and new materials and, in particular, for “green technologies” in connection with the course of decarbonization of the economy actively pursued by world powers. In the production of such products, the consumption of MRMs is growing rapidly, especially rare-earth elements (REEs), V, Li and platinum-group elements (PGEs). From the list of 61 kinds of MRMs that are strategic for Russia, the extraction of oil, gas, Cu, Au, PGEs, Ni, apatite ores, K salts, and diamonds (as well as nonlisted coals, Fe ores, Na salts, V, B ores, magnesite, and chrysotile asbestos) fully covers their current domestic consumption in the Russian Federation and the achieved level of export. U, Mn, and Cr ores; Zr; high-purity quartz raw materials (SiO2); bauxite (Al); graphite; fluorite and nonstrategic barite; kaolin; and bentonite are deficient; their exploitation only partially provides domestic consumption, which is largely dependent on imports; it is carried out in insufficient volumes in the presence of significant reserves of relatively low quality. The most deficient in this list are Ti, Li, Ta, Nb, and REEs (usually, there are groups of heavy and light rare earths (HREEs and LREEs, respectively)): their domestic consumption is provided mainly by imports with very limited production (despite large reserves, including low quality ores). Re, Be, Nb, Ta, HREEs, Y, Sc, LREEs, Ge, Ga, Li, Hf, and Co, and, of nonstrategic MRMs, Bi and Sr, should be considered critical MRMs in the Russian Federation. The most important source of dispersed/ associated elements is represented by raw materials of mining enterprises of nonferrous metallurgy: Cu and Zn subsectors, In, Ge, Ga, Cd, Tl, Se, Te, Sb, Bi, etc.; Al subsectors, Ga; for Au and Au–Ag deposits, Sb, As, Te, Se, Bi, Tl. An associated source of lithium is represented by brines of gas-condensate fields. The issues of assessing complex raw materials for high-tech industry are considered using the example of pyrite, porphyry, and gold-ore deposits of the Ural folded region, which play an important role in its overall metallogenic potential.

Introduction. Currently, despite the intensive development of high-performance mining equipment, significant coal reserves remain in the subsurface, which are impractical to extract using existing technologies and methods of mining them. At the same time, underground and especially open-pit mining operations are significantly inferior to the technologies of thermochemical mining of reserves in their place of occurrence due to the combined influence of negative factors (dust and gas emissions, seismic effects, etc.) at all stages of extraction, transportation and processing. The purpose of the research. Assessment of the possibilities of using thermochemical technologies to involve coal reserves left in the subsurface for mining geological and mining engineering factors in the field of industrial production. Methodology. To substantiate the choice of promising areas for the development of technical solutions for the integrated use and energy-efficient development of unprofitable coal reserves using traditional technologies, an analysis of factors that reduce their effectiveness and negatively affect the environmental situation in coal-mining regions was carried out. Within the framework of this analysis, the possibilities of mining reserves using alternative technologies are considered. For these purposes, an assessment of the effectiveness of thermochemical technologies (underground gasification of coal seams (UCG) and underground combustion (UCC)), tested in a wide range of mining and geological conditions and acceptable for processing thermal coal, was carried out. Results and discussions. An analysis of research in the field of UCG technologies has shown that, depending on the quality and composition of the blast, the heat of combustion of gasification products can vary widely, providing the required parameters. At the same time, the quality of coals significantly affects the efficiency of the technology, so during the gasification of hard and brown coals, the heat of combustion of gas differs by an average of 20%. Along with the significant positive factors of the UCG technology, it should be noted the high requirements for the tightness of the underground gas generator and the entire aerodynamic network and the loss of coal in the safety pillars and in the area of the gas generator. The elimination of these shortcomings is ensured by the consistent application of the UCC technology - the proposed combined technology of phased mining of prepared reserves, effective at depths up to 300 m. One of the most promising areas of implementation of such technology is distributed (small) energy. Conclusion. Traditional technologies of open-pit and underground mining of coal deposits require human participation in the implementation of basic technological processes. The development of the field’s reserves is accompanied by a number of concomitant negative environmental factors, one of the most significant is gas and dust emission during drilling and blasting operations. An alternative way of mining coal deposits is the use of thermochemical methods for mining coal reserves at the place of its occurrence, but their implementation in conditions of large-scale energy consumption is limited by the presence of large enterprises of a similar profile in the immediate vicinity. There is a steady positive trend in the development of small (distributed) energy in Russia. The proposed combined technology, which reduces environmental harm, can be used for mining deposits with limited reserves and in difficult mining and geological conditions and used for these purposes. Resume. 1. The article presents the results of research on the possibilities of using thermochemical technologies to increase the efficiency of extracting coal reserves. 2. It has been established that coal mining in modern conditions is accompanied by significant losses of reserves in the subsurface due to the requirements for the manufacturability of reserves when using high-performance equipment. The advantages of shaft-free thermochemical methods of mining coal seams are determined and the relevance of developing technical solutions for their practical implementation is substantiated. It is shown that the use of these technologies leads not only to an increase in the efficiency and completeness of coal reserves extraction, but also to a reduction in the environmental burden on the environment by eliminating blasting operations, as well as technological procedures related to the transportation and preparation of coal for use. A basic technological scheme for mining coal reserves based on the joint use of underground gasification and underground combustion technologies is presented. 3. The results of the research may be useful for assessing the possibilities of creating distributed energy facilities involving, among other things, coal reserves left behind as a result of mining with traditional technologies, especially in remote decentralized areas.

El sector automotriz de motocicletas creció sostenidamente dentro del período 2016 al 2018, con crecimientos de ventas acumuladas del 3.42%, mayor al sector de automóviles que decreció en el mismo período. En el marco global existe tendencias de generar eficiencias y ofrecer servicios de valor mediante la digitalización, donde el concepto IoT (Internet de las cosas, siglas en inglés) ofrece soluciones que mejoran experiencias de uso tanto para usuarios finales de motocicletas como para quien las vende. Por ello, se considera usar dispositivos inteligentes, que permiten al usuario ubicar su vehículo, el recorrido histórico, compartimiento de rutas, cortar combustible, entre otros; cubriendo la necesidad de seguridad que requiere alguien que compra una motocicleta, sabiendo que el índice de robo vehicular crece constantemente, y una solución como ésta permite actuar inmediatamente para recuperar el vehículo. En esta situación, es lógico plantear soluciones IoT para que usuarios finales cuenten con alternativas que mejoren su seguridad vehicular, sin embargo, la realidad es que éstas no son tan populares como el mercado indica; debido a fallas de mercado que impiden masificar la venta de motocicletas con esta solución, y sólo está disponible para quienes explícitamente lo soliciten, debido a que la relación valor de la solución frente al valor ticket de motocicleta es alta. Bajo situaciones parecidas, aunque no iguales, el mercado de automóviles tiene normativas que condiciona la venta de principales marcas y modelos al uso de dispositivos inteligentes complementarios al seguro vehicular, y permite recuperar vehículos con menor riesgo ante un robo.
The motorcycle automotive sector grew steadily from 2016 to 2018, with accumulated sales growth of 3.42%, higher than the automobile sector, which decreased in the same period. In the global framework, there are trends to generate efficiencies and offer value services through digitization, where the IoT (Internet of Things) concept offers solutions that improve user experiences both for end users of motorcycles and for those who sell them. Therefore, it is considered to use smart devices, which allow the user to locate their vehicle, the historical route, route sharing, cut fuel, among others; covering the security need required by someone who buys a motorcycle, knowing that the rate of vehicular theft is constantly growing, and a solution like this allows to act immediately to recover the vehicle. In this situation, it is logical to propose IoT solutions so that end users have alternatives that improve their vehicle safety, however, the reality is that these are not as popular as the market indicates; Due to market failures that prevent the mass sale of motorcycles with this solution, and it is only available to those who explicitly request it, because the value of the solution versus the value of the motorcycle ticket is high. Under similar, although not equal, situations, the car market has regulations that condition the sale of main brands and models to the use of intelligent devices complementary to vehicle insurance, and allow to recover vehicles with less risk in the event of theft
Tesis

<p>A pesar de los numerosos estudios que se han generado como producto del impacto ocasionado por la década progresista latinoamericana y habiendo variado enormemente el contexto subcontinental cuyo ciclo se vio interrumpido por la victoria de Mauricio Macri en Argentina, lo que dio paso a un avance neoconservador que, a pesar de posicionarse con bastante rapidez, hoy se encuentra nuevamente cuestionado, sigue siendo un enigma la naturaleza de los procesos que se desplegaron en dicho período. Principalmente, porque al no existir un acuerdo académico acerca de cómo deben ser categorizados, muchos de dichos trabajos poseen una fuerte carga normativa que limita su alcance analítico.</p><p>Así las cosas, lo que se pretende con la presente investigación es contribuir a la comprensión del proceso político que se desplegó en Venezuela con el triunfo electoral de Hugo Chávez en 1998 hasta su fallecimiento en el 2013, específicamente en lo que se refiere a las Misiones Sociales, entendidas como el centro de toda la política social chavista. Para conseguirlo, se recurrió a una noción postestructuralista de populismo que permite articular al juego ambivalente que se produjo entre el chavismo como identidad política hegemónica y las resultantes transformaciones ocasionadas en el Estado, utilizando a la ciudadanía social como un vehículo que comunica los momentos de ruptura e institucionalización.</p>

Esta obra se debruça sobre diálogos entre políticas públicas e direito, trazendo artigos científicos de diversos autores brasileiros acerca da participação e da sua efetividade na sociedade contemporânea. O livro apresenta um olhar interdisciplinar, sendo composto por capítulos escritos por pesquisadores não só da área jurídica, como também de Psicologia, Biologia, Odontologia e Pedagogia. A divisão dos capítulos parte de temas mais relacionados à participação política por diferentes vias, passando pelas demandas por efetivação dos direitos humanos, sem retrocesso social. Em seguida, transita por violações específicas no âmbito dos direitos a educação, igualdade racial e de gênero, moradia, dignidade física, psíquica e sexual, segurança pública e saúde. O primeiro capítulo discute em que medida foi eficaz a participação popular na tramitação da reforma política na Câmara dos Deputados do Brasil. Descreve as vias de participação popular nesse âmbito e discute seus efeitos na tramitação da referida reforma, a partir dos procedimentos metodológicos de revisão bibliográfica, análise de documentos, estudo de caso e process tracing com elite interviewing, em abordagem qualitativa. Os resultados indicam que, embora tenha havido aumento da participação popular institucional no período sob enfoque, o parlamento aplicou não decisões em relação à reforma política intencionada pelas entidades da sociedade civil que organizaram as provocações ao Poder Legislativo. Em seguida, o segundo capítulo tem como principal objetivo a análise acerca do Portal e-Democracia e o seu papel para uma maior democracia participativa de, principalmente, inclusão das minorias sociais. Estuda a relação entre a democracia brasileira e a participação popular, investiga o porquê do Portal e-Democracia ser tão necessário para a defesa dos direitos das minorias sociais, bem como explica a importância da participação popular legislativa das minorias sociais. Esta pesquisa parte de fontes bibliográficas primárias e secundárias, com revisão bibliográfica e análise do próprio portal em estudo. O estudo conclui que é essencial a criação de políticas públicas para a participação política das minorias sociais, sendo uma delas o mencionado portal eletrônico, porém esta medida isolada não resolve a presente questão, sendo necessárias políticas públicas de fácil acesso a todos e todas. O terceiro capítulo aborda as relações que conectam o princípio da vedação ao retrocesso social com as manifestações que apoiam o movimento de retorno da ditadura militar no Brasil no século XXI. Para tanto, no primeiro momento, os autores elucidam os conceitos de vedação ao retrocesso social, bem como o significado do chamado efeito cliquet, o qual corrobora com os ditames fixados do respectivo princípio, haja vista que, no alpinismo, significa que quando atingida uma determinada altura, não se pode mais voltar. Contextualizam, ademais, as heranças e as consequências da ditadura militar no Brasil, além de analisarem as manifestações que têm ocorrido na atualidade em prol de um retrocesso ao período ditatorial. O trabalho comprova que a volta da ditadura militar seria uma afronta ao princípio da vedação ao retrocesso social, uma vez que extinguiria e revogaria direitos fundamentais já consolidados no ordenamento jurídico brasileiro e regressaria a um período autoritário, que não se coaduna com o Estado Democrático de Direito. Conectando-se à discussão acerca de retrocessos e inefetividade de direitos, o quarto capítulo mergulha no debate democrático acerca da expansão da educação superior brasileira e das políticas de acesso que promoveram um significativo acréscimo de ingressantes nos cursos de graduação no Brasil. O trabalho atende a pesquisa bibliográfica e fundamenta-se na revisão de literatura com o suporte teórico de autores e legislações da área afim, refletindo sobre o processo de evolução e inclusão mediante a implementação de programas e ações afirmativas para a educação superior que corroboraram para dirimir o caráter elitista impregnado no perfil deste nível de ensino. Embora distante de reparar as injustiças sociais no Brasil, tais políticas geraram um número maior de ingressantes das camadas menos favorecidas da sociedade e, com isso, a representatividade dos grupos denominados de minorias aumentou, ainda que de modo tímido, mas refletindo na redução do déficit de acesso ao ensino superior. Ainda sobre desigualdades na educação no país, no quinto capítulo as autoras investigam como a discussão sobre o mito da democracia racial no Brasil impulsionou práticas racistas ao longo do tempo e como, a partir de um viés multiculturalista, se assentam as políticas afirmativas, com destaque para a política de cotas para ingresso de negros e pardos nas Universidades, implementadas a partir de 2012. Apontam, para tanto, que a construção deste mito não se coaduna com questões mais modernas e de relevo econômico e social que pautaram a promoção de políticas afirmativas no Brasil. Nesta senda, as políticas sociais afirmativas de cotas são medidas tomadas pelo Estado, de cunho temporário ou especial, com o objetivo de assegurar igualdade de oportunidades e que foram negadas historicamente para a população afro. Para embasar este artigo, foi utilizada a metodologia de revisão bibliográfica e a análise documental das políticas afirmativas de cotas. O capítulo seguinte aventa que as relações sociais são produtos da vida em sociedade e caracterizam-se, essencialmente, pela interação que há entre seus componentes considerando territórios, culturas, identidade e ideias. Contudo, é da natureza dessa dinâmica social que alguns grupos sociais se sobressaiam sobre os demais e imponham seus interesses pessoais acima dos interesses públicos, prejudicando, assim, a concretização de interesses gerais. Dessa maneira, com o intuito de explicar como essas relações de poder e de domínio influenciam na concretização de políticas públicas, o trabalho se propôs a analisar qual o protagonismo que os agentes sociais têm nessa fase. Como exemplo prático dessa discussão acadêmica, analisa-se como a elite governante brasileira busca conciliar seus interesses com a efetivação de políticas públicas habitacionais. Em outro aspecto de violação de direitos através de deficiências de políticas públicas, o sétimo capítulo analisa a evolução da taxa de homicídios no Brasil, verificando grande heterogeneidade entre os estados. Isso constitui uma deficiência estrutural grave, que compromete as bases do desenvolvimento no país. Assim, o propõe-se o entendimento da correlação das taxas de homicídios no Brasil em um período de 10 anos, verificando que os estados do Rio Grande do Norte, Goiás, Maranhão e Piauí se correlacionaram positivamente, apresentando um aumento na taxa de homicídios, enquanto Espírito Santo e Paraíba obtiveram redução. Diante dos resultados, destaca-se a atenção às políticas de segurança pública e conclui-se que é possível identificar padrões estruturais das distintas dinâmicas de homicídios contribuindo para e informações relevantes que possam subsidiar a implantação e efetividade das políticas públicas no país. Na seara das violências, o oitavo capítulo destaca aquelas cometidas contra mulheres no ambiente doméstico no bairro de Narandiba, em Salvador-BA. O artigo tem como objetivo geral analisar a possibilidade ou não de ampliação no atendimento às mulheres que sofrem violência doméstica através da unidade do Centro Judiciário de Solução Consensual de Conflitos (CEJUSC), órgão vinculado ao Tribunal de Justiça da Bahia, localizado no bairro de Narandiba, em Salvador. Como primeiro objetivo específico, examina se o acolhimento dessas vítimas estaria em conformidade com o regulamento e a missão que fundamenta o trabalho do CEJUSC. Como segundo objetivo específico, reflete sobre a demanda de mulheres, vítimas de agressão doméstica, que passam pela unidade de Narandiba em busca de um apoio ou uma orientação jurídica. Em termos metodológicos, o artigo é qualitativo e analisa o tema proposto utilizando a revisão bibliográfica, a análise de documentos e a observação da autora durante o período de janeiro a outubro de 2019. As violências domésticas atingem, não raro, a dignidade sexual de crianças e adolescentes. Assim, a conexão para o nono capítulo apresenta as etapas da perícia psicológica nos casos de suspeita de abuso sexual, tendo como enfoque os instrumentos e testes psicológicos mais utilizados nestas avaliações. Os objetivos específicos englobam conceituar avaliação psicológica e abuso sexual, bem como trazer técnicas da Psicologia que melhor respaldem o psicólogo nesse processo de avaliação. O método deste estudo foi realizado por meio de pesquisa bibliográfica. A avaliação psicológica pericial difere de outros tipos de avaliação psicológica em função de sua meta final onde atua subsidiando decisões legais quando estas dependem de um entendimento de funcionamento psicológico do(s) envolvidos(s) nos casos de suspeita de abuso sexual de crianças e adolescentes. Abuso sexual é qualquer contato ou interação entre uma criança ou adolescente e alguém em estágio psicossexual mais avançado do desenvolvimento, na qual a criança ou adolescente estiver sendo usado para estimulação sexual do perpetrador. As avaliações psicológicas têm sido requisitadas em todas as fases de encaminhamento dos casos, da notificação ao processo judicial. Desde a fase inicial ou investigativa, a criança pode passar por inúmeras intervenções (entrevistas, aplicação de testes psicológicos, etc), inclusive de psicólogos que não atuam diretamente com a justiça, mas que acabam colaborando no processo quanto à veracidade da situação de abuso. Não obstante possam ser vítimas de diversas violações de direitos, por vezes crianças e adolescentes entram em conflito com a lei. Nesse contexto, o décimo capítulo investiga a contribuição da aplicabilidade da entrevista terapêutica no processo de avaliação psicológica de adolescentes em conflito com a lei, descrevendo as características de adolescentes, explicando a função da Psicologia e elucidando entrevista terapêutica como ferramenta diferencial na avaliação psicológica desses adolescentes. Como metodologia foi realizada uma revisão bibliográfica, com base em livros e artigos científicos, com tratamento particular de publicações da área de Psicologia e da legislação específica sobre os direitos do adolescente. Como resultados, os adolescentes em conflitos com a lei apresentam características que se fundamentam em aspectos históricos, sociais e culturais e a entrevista terapêutica mostrou-se como importante na contribuição da avaliação psicológica desses adolescentes, uma vez que se dispõe como uma técnica de analise aberta, capaz de se ajustar a diferentes situações clínicas, com possibilidades de descobrir as subjetividades, conhecer comportamentos, indicar encaminhamentos ou fazer intervenções. Diante de uma realidade vivencial complexa e aprisionadora, a avalição psicológica é uma prática relacional, que visa com alteridade contribuir para incluir socialmente os adolescentes. É certo que a mudança comportamental dos adolescentes infratores requer apoio familiar e um trabalho multidisciplinar, que não comporta apenas o papel do Psicólogo, mas, o envolvimento do Estado e da sociedade como um todo em ações conjuntas, para efetivamente produzir transformações. Conclui-se que o estudo produziu uma discussão importante, por dispor conhecimentos para área da Psicologia, profissionais que atuam e para a sociedade, que podem melhor conhecer os espaços de intervenção, meios de atuação e a importância da psicologia neste contexto. Nessa linha de discussão que abarca questões relacionadas à saúde, o capítulo seguinte analisa a judicialização do direito à saúde. Esse direito, conforme o artigo 196 da Constituição Federal, pertence a todos e é dever do Estado fornecê-lo por meio de políticas públicas. Entretanto, a possibilidade de exercício por todos do referido direito fica limitada aos recursos disponíveis e por ações judiciais no âmbito do Sistema Único de Saúde (SUS). O objetivo geral, portanto, é analisar se a judicialização da saúde é a solução mais adequada para se obter uma vaga de leito de UTI no SUS. Assim, o trabalho descreve como o SUS regula a distribuição de leitos e reflete sobre o fenômeno da judicialização e o seu potencial ou não de efetivar esse direito com isonomia. Para a sustentação metodológica, o estudo utilizou de uma pesquisa qualitativa, com método fundamentado em análise de documentos e revisão bibliográfica a respeito do tema. Os resultados mostram que, embora o SUS estabeleça a quantidade de leitos de UTIs, alguns hospitais carecem de mais ofertas de leitos. Desta forma, é relevante ter um políticas públicas que efetivem o direito à saúde, em cumprimento às previsões legais. Nesse contexto de inefetividade do direito à saúde, o capítulo seguinte descreve o perfil das demandas judiciais referentes a medicamentos no município de Cuiabá – Mato Grosso, realizado na Defensoria Pública, em 2013, utilizando indicadores de Pepe. Foram analisadas 135 ações judiciais relativas às solicitações de medicamentos e 166 medicamentos requeridos nas mesmas. Em quatro dimensões (sócio demográficas do autor da ação judicial; processuais das ações judiciais; médico sanitárias das ações judiciais; político-administrativas das ações judiciais). As informações obtidas e delineadas no capítulo expõem o cenário da saúde frente a judicialização de medicamentos e as características dos indivíduos que abriram demandas contra o Estado ou o Município. Em preocupação com a saúde e a segurança alimentar dos brasileiros, o décimo terceiro capítulo discute o cabimento de arguição de descumprimento de preceito fundamental (ADPF) contra a nova política brasileira de agrotóxicos. A evolução clássica da política brasileira de agrotóxicos foi marcada pela ótica da proteção. Todavia, novos desafios, hoje, contrariam a política até então vigente e faz surgir um movimento, cada vez mais forte, pela flexibilização de normas. Nesse cenário, percebe-se o surgimento de uma nova política sobre tema, mas desta vez, tendo o agronegócio como protagonista. Desse modo, os efeitos desta nova política já são tangíveis, o que nos leva a discutir a constitucionalidade de tais ações. Posto isso, este trabalho tem como objetivo promover um debate acerca da existência de uma nova política brasileira sobre agrotóxicos em suas principais questões. Para realizar este trabalho, foram utilizados os tipos de pesquisa bibliográfica e documental, através da abordagem qualitativa. Conclui-se que a nova política de agrotóxicos é inconstitucional e, por consequência, atacável por meio da ADPF. Avançando na busca de efetivação de direitos humanos através de políticas públicas, o último capítulo investiga a necessidade de ressignificação das bases da teoria da execução para efetivar ações civis públicas em que se discutem tais políticas. Para tanto, utiliza-se de procedimento monográfico e bibliográfico. O estudo expõe as razões que levaram à judicialização da política, bem como traça diretrizes gerais sobre o atual panorama da execução. Aborda, ainda, a crise de efetividade da execução, que insiste em se valer de multas pelo descumprimento – que vêm sendo inefetivas para o cumprimento. Após essa discussão, o trabalho traz instrumentos jurídicos hábeis a colaborar com a concretização dos direitos. Espera-se que esta seleção de artigos científicos contribua, como obra coletiva, para avanços no conhecimento sobre políticas públicas como efetivadoras de direitos humanos, bem como sobre as múltiplas formas de participação popular na luta por tais direitos na sociedade contemporânea.

Abstract No technical barriers limit today’s commercial uses of coals. The future use of coal in current applications faces many issues, economic, environmental, and societal. Mining costs are increasing. Less coal is required to produce a given amount of electricity or steel. Natural gas is capturing much of the market share lost by coal. Costs of wind and solar are steadily dropping. Less energy of all kinds is required to achieve a given level of economic growth. Economic strategies for carbon capture and storage are badly needed. The burgeoning world population, combined with recognition that there is no “one size fits all” energy strategy for every country, suggest that we will eventually have to mobilize all forms of energy to satisfy everyone’s needs. The potential of chemical products and carbon materials from coal adds more to the argument that we should not burn coal—we can use it more wisely in other applications.

Traditional coal-to-liquid processes use gasification with excess steam to obtain hydrogen-rich syngas for downstream manufacturing of methanol or Fischer-Tropsch liquids. Such processes are shown to produce very large amounts of CO2 directly by the Water-Gas-Shift (WGS) reaction or, indirectly, by combustion in raising steam. It is shown how any coal gasifier can operate under auto-thermal conditions with methane as source of hydrogen instead of steam. This co-gasification system produces syngas for a poly-generation facility while minimising the formation of process CO2. It is shown that minimal steam is required for the process and a limit on the maximum amount of H2:CO can be obtained. Co-gasification of coal is shown to have a major advantage in that a separate WGS reactor is not required, less CO2 is formed and methane is reformed non-catalytically within the gasification unit. Furthermore, regions of thermally balanced operations were identified that enabled a targeting approach for the design of co-gasification systems. The method will guide gasification practitioners to incorporate fossil fuels and renewable-H2 into coal-to-liquids processes that require syngas with H2:CO ratio of 2. An important result shows that low-grade coals can be co-gasified with methane to obtain CO2-free syngas ideal for power generation.

For a 500 MW unit, a 1 % reduction in boiler efficiency equates to a coal cost in the order of $ 1/2 million/annum, while a 5 % unit derate, needed to meet emission compliance, can equate to an annual revenue loss of up to $ 12 million. Many software products are in use, which based on the present plant performance, identify and optimize the operational parameters for the best plant capacity, utilization and efficiency. While they are effective in tuning up the unit, they are applied to an operating plant firing a given coal for the given performance. But what if there were a means of predicting how a coal will perform with respect to slagging, fouling and every other single parameter involved in the use of that coal for capacity, efficiency maximization and emission control without firing even a lb of coal? This would enable the operator to know in advance what to expect and thereby, adjust the operating variables to get the best out of that coal. Such a software product – SCES (Steam Coal Evaluation & Services) has been developed based on the fundamental principles of combustion, mineral matter transformation and emission of particulates, NOx, SO2 and mercury, based on only the standard ASTM coal and ash analyses. The operational parameters evaluated are: Slagging and fouling as well as Grindability, Abrasion of the grinding elements; Combustibility & Unburnt carbon, Corrosion and Erosion; Emission of particulates, the oxides of sulfur and nitrogen (both primary and secondary DeNOx) as well as mercury when data are available. Its advantage over the existing products is its ability to predict, amongst others parameters, corrosion, erosion of convective tubes and the life of grinding elements none of which are discernible from the existing software products or from a limited test burn. These parameters however play important roles in the bottom line O & M costs. The implementation of SCES in providing meaningful rankings alerts the plant operators to the performance they can expect and any measures that need to be taken to be able the plant to operate at its highest load factor and efficiency while under emission compliance with minimum impact on O & M cost. No separate coal sample or small-scale laboratory evaluation work is required in the derivation of the rankings. Because of its simplicity of use and immediate availability of results, SCES can also be used as a routine analytical tool, accompanying the coal analyses by the plant or supplied with each delivery of coal. It is applicable to all coals irrespective of rank and country of origin, it has been used and validated on coals from the US, UK, Russia, Columbia and India. The paper describes the fundamental properties coal used in the development of the software and cites case histories of its validation on US (Bituminous & Sub-bituminous) coals.

Coal bound moisture is a key issue in pulverized coal fired power generation. Coal being hygroscopic, accumulates considerable surface moisture with seasonal variations. A few varieties of coals are having unusually high inherent as well as surface moisture that affects the pulverizer performance and results lower thermal efficiency of the plant. A proper coal drying is essential for effective pulverization and pneumatic conveyance of coal to furnace. But, the drying capacity is limited by available hot airflow and temperature of hot primary air. Even, use of high-grade coal for blending would not provide the entire useful heat value due to moisture, when used for matching power plant design coal parameters. Besides, the inefficient mining, transportation, stacking and associated coal fleet management deteriorates the “as fired” coal quality affecting cost while purchased on “total moisture and gross heat value” basis. Partial devolatilisation of coal in a controlled heating process, prior combustion in fuel-rich environment ensures better in-furnace flame stability and less residual carbon in product of combustion. It improves the opportunity of a lower flame zone temperature, delivering better control over thermal NOx formation from fuel bound nitrogen. The pulverized coal fired power plants use coal feeders in either gravimetric or volumetric mode of feeding that needs correction for moisture in coal which changes the coal throughput requirement. In this paper an integrated coal drying and partial coal gasification system model is discussed to improve the useful heat value for pulverized coal combustion of high moisture typical power coals so that related improvement in coal throughput can be carried out by application of suitable coal drying mechanism like Partial Flue Gas Recirculation through Pulverizer (PFGR©) for mitigating the coal throughput demand with optimizing available pulverizing capacity along NOx control opportunity without derating steam generation capacity of the boiler.

Solid fuels currently used for energy production in thermal power plants are characterized by a large variety ranging from different coals to biomasses and wastes. This manifold of fuels offers opportunities to the energy producers and nowadays many power plants do not fire single fuels but fuel mixtures. While this procedure may lead to overall economic and environmental advantages it is very demanding for the boiler operators to maintain boiler performance and availability and to meet emission limits. The development of mathematical models that are capable of predicting the combustion behavior of fuel mixtures and provide guidelines for operators and manufacturers has been a challenge over the last years. Since bubbling fluidized beds are frequently used for firing fuel mixtures and especially biomass mixtures, current CFD based BFB models, such as the A˚bo Akademi Furnace Model, have been used widely over the last years to predict emission tendencies and ash deposition behavior. However, due to the complexity of the processes during combustion of fuel mixtures and the combustion process in the bubbling fluidised bed itself, the models are characterized by strong simplifications. This is especially true for the description of the lower part of the furnace, the region of fuel intake and bubbling bed. Recently, the A˚bo Akademi Furnace Model has been extended by a more detailed description of the fuel conversion by considering the combustion of individual biomass particles and a first simplified approach describing heat and mass transfer processes between the bubbling bed and the freeboard. Both submodels guarantee a closed mass and energy balance over the bed-freeboard region. In the current study the new submodels have been used to investigate the combustion conditions in a 290 MW bubbling fluidized bed boiler firing peat and forest residue. Clear differences in the simulation results for the both fuels can be found with regard to the specific combustion characteristics, the location of the main combustion zone and the total heat generated during combustion.

En Colombia se han logrado importantes avances en el acceso a productos transaccionales ofrecidos por el sistema financiero, sin embargo, su uso aún es bajo, y las empresas y los consumidores continúan utilizando de manera intensiva el efectivo. Una de las razones por las cuales los colombianos prefieren el efectivo para realizar sus pagos cotidianos es la limitada aceptación de pagos electrónicos por parte de los comercios, lo que se explica en parte por la percepción que tienen éstos sobre los altos costos relativos de operar con pagos electrónicos versus operar con efectivo. Con el fin de tener una medición integral de los costos privados de los comercios en la aceptación y uso de diferentes instrumentos de pago, el Banco de la República realizó en 2018 una encuesta a comercios que aceptan tanto efectivo como tarjetas de pago. Este documento presenta los resultados de dicha encuesta. Las estimaciones muestran que el efectivo es significativamente menos costoso que las tarjetas débito y crédito a la hora de recibir pagos en los comercios. Dicha estructura de costos se replica para los pagos que realizan los comercios asociados con sus gastos de funcionamiento, para los cuales se encuentra que los costos de los pagos electrónicos llegan a ser más del doble que los de los pagos en efectivo. Así las cosas, para los comercios, operar con efectivo resulta más económico que operar con instrumentos de pago electrónicos.