Resultados de Pesquisa

INGLÊS

Sustainability In Chemical Processes Through Digitalization And Green Chemistry Approaches

~~304,75€~~ 274,28€ 10% IMEDIATO

DISPONIBILIDADE IMEDIATA

 The sustainability of chemical processes extends beyond the physical and chemical sciences to include the biological sciences - reflected by bio and green modifiers, and other resources like alternate energy, alternate feedstock, green processes with minimal footprint and minimal environmental impact, process intensification, recycling etc. Digitalization has transformed the chemical industry rapidly across its entire value chain through predictive maintenance and process automation. There are applications of artificial intelligence in the chemical engineering field, such as modeling, optimization, process control, reaction engineering, fault detection and diagnosis. Artificial Intelligence (AI) could provide a significant impact in problem-solving, mathematical analysis and information technology by optimizing processes in chemical industries. AI has promising applications in new areas that include materials designs such as catalysts, nanostructures, pharmaceuticals, additives, polymeric composites, rubber compounds and alloys. Also, machine learning is an area of AI that has been used to integrate physical models and computational techniques for autonomous molecular design in the chemical and pharmaceutical industries, especially in the manufacturing of soft bio-inspired materials. AI can make industrial processes safer and cleaner, and help invent new molecules for specific customer needs, including the increased circularity of materials. Over the next few years it will be critical for the chemical sector to find the right applications of AI technologies that can bring benefits in terms of reducing energy consumption, the reduction of environmental pollution, the realization of a full circular economy, cost reductions and product quality improvements. Sustainability chemistry focuses on the design of products and processes that eliminate the use and generation of hazardous substances and make the global environment clean and safe. Increased drive for sustainable products and technologies, enhanced customer specifications, new performance requirements and the ground-breaking integration of mass data technologies is creating a vibrant and evolving landscape of opportunities and challenges. This book will provide an excellent opportunity to all the stake holders in the industries, consumer interest organizations, regulatory agencies, policy implementers and research organizations by providing future directions in the areas of soaps and detergents; vegetable oils; food and beverages; paints and coatings; bimolecular and bioprocesses technologies; packaging; leather products; petrochemicals and polymers; essential oils and cosmetics, and biofuels and lubricants.
INGLÊS

Properties And Applications Of Nanocomposite Membranes

~~125,88€~~ 113,29€ 10% IMEDIATO

DISPONIBILIDADE IMEDIATA

 This book contains six chapters that detail the properties and applications of nanocomposite membranes. Chapter One provides an overview of the nanocomposite membrane, preparation methods, and gas transport mechanisms. Then, properties and applications of nanocomposite membranes in gas separation are reviewed. Chapter Two focuses on the overview of fuel cell technology, especially proton-exchange membrane fuel cells. Chapter Three introduces nanocomposite polymer electrolyte membranes and their advantages for Li batteries application. Chapter Four covers the topic of nanocomposite membranes and their wide range of applications. In Chapter Five, the development of nanocomposite membranes as the latest developed generation of reverse osmosis and nanofiltration membranes for desalination and water purification applications is reviewed. Lastly, Chapter Six discusses how nanocomposites have been involved in the development of novel concepts with the great potential for plant disease management.
INGLÊS

Triazoles And Their Uses

258,38€ + 10% EM CARTÃO

DISPONIBILIDADE IMEDIATA

 This book focuses on the latest research on triazoles and their applications.
INGLÊS

Chromophores With Nonlinear Optical Properties And Their Applications

de Maria Marinescu

125,88€ + 10% EM CARTÃO

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 This book is intended to be a useful tool for academia and researchers interested in the chemistry and applications of organic chromophores with nonlinear optical properties (NLO). This book aims to review the various types of organic chromophores reported in literature with NLO properties, such as alkynes, tetraenes, azo dyes, chalcones, heterocyclic compounds, fullerenes, perylenes, ferrocenes and polymers, their structural features, properties and their nonlinear optics. parameters. 380 chromophores with NLO properties are presented in this book. The various applications of organic NLO chromophores, in medicine as luminescent materials, molecular switches, laser technology, spectroscopic and electrochemical sensors, microfabrication and imaging, data storage, optical signal modulation, telecommunications, make this field highly sought after and explored by researchers in the last decade.
INGLÊS

Chemical Vapor Deposition (Cvd): Methods And Technologies

212,00€ + 10% EM CARTÃO

DISPONIBILIDADE IMEDIATA

 Chemical vapor deposition (CVD) refers to a vacuum deposition method used to produce high quality, high-performance, solid materials in a variety of manufacturing industries. Chapter One provides a critical review of published experimental data for thin films of silicon nitride deposited by thermal and plasma CVD, plasma CVD, high density plasma CVD, atomic layer-by-layer deposition, and hot-wire CVD. Chapter Two describes several aspects of the use of CVD for single-crystal diamond synthesis for electronics. Chapter Three describes the properties of graphene and its preparation by a number of methods with a focus on the classical CVD method on copper foil together with graphene transfer onto a dielectric substrate.
INGLÊS

Properties And Uses Of Calcium Silicate

212,00€ + 10% EM CARTÃO

DISPONIBILIDADE IMEDIATA

 Calcium silicate is a compound that can be derived from limestone and diatomaceous earth, and has applications as an anticaking agent in food preparation, as insulation, and more. The four chapters of this book explore the various characteristics and applications of calcium silicate. Chapter One examines the effectiveness of calcium-silicate cements in furcal perforation repair. Chapter Two investigates methods of producing cement with lower energy consumption by using calcium silicate. Chapter Three deals with the use of synthesized calcium silicates in compositions for the restoration of buildings. Lastly, Chapter Four evaluates and compares the effects of simulated tissue fluid on the Berkocivh microhardness of four calcium silicate cements.
INGLÊS

Fluidized Bed Reactors: Principles And Applications

108,65€ + 10% EM CARTÃO

DISPONIBILIDADE IMEDIATA

 This compilation presents the main results reported in literature regarding the application of the fluidized bed reactor in the fermentative production of hydrogen using different synthetic and complex substrates, such as: glucose, sucrose, xylose, sugarcane vinasse, cheese whey, cassava wastewater and glycerin. Additionally, the results of studies on the dry torrefaction process of various types of fluidized bed biomass in an inert gas medium are presented, as well as the results of studies on torrefaction in a fluidized bed in a gas medium, which produces a mixture of inert gas and oxygen. Using a fluidized bed reactor for activated carbon production, the effect of various process parameters such as particle size, fluidizing velocity, process time, static bed height, activation temperature and fluidizing medium are studied. The authors propose that the development and implementation of the suspended bed reactor is the most reasonable means to achieve promising catalytic hydrogenation.
INGLÊS

Study On Metal Catalysts For Liquid Phase Hydrogenation Of Aromatic Compounds In Diesel Fuel

108,65€ + 10% EM CARTÃO

DISPONIBILIDADE IMEDIATA

 The major aspects of aromatic hydrogenation are the production of aromatic-free diesel fuels. Health risks and diesel quality depend on the aromatic compounds that have insisted legislators to improve the quality of the diesel fuel and to reduce the aromatic content in the diesel. In diesel fuel, aromatic compounds are also responsible for particle emissions in exhaust gases. The major concern related to exhaust gases are particle emissions such as CO, SOx and NOx. This book represents the study on metal catalysts for liquid phase hydrogenation of aromatics in a high pressure catalytic reactor and kinetic study of the hydrogenation of aromatic compounds. The hydrogenation of benzene, toluene, naphthalene and mixtures of these on a synthesized platinum and nickel catalysts in a fixed bed reactor is discussed. The oil refinery industry today faces increasing production demands for diesel fuels, but the fuel specifications are being tightened day by day. Intensive study toward more efficient hydroprocessing reactor is therefore required. Hydrogenation of diesel fuel also comprises the removal of heteroatoms (S, N, O) and aromatic compounds. Aromatic compounds are converted to saturated hydrocarbons through hydrogenation reaction over metal catalysts in a continuous catalytic fixed bed reactor at high temperature and pressure. Regulations today allow total aromatics contents to 36 wt % in the U.S. and polyaromatics contents to 11 wt % in the EU. Stringent limitations are, however, forthcoming. The World Fuels Charter, issued by engine and vehicle manufacturers, specifies higher qualities for diesel fuel of the future. Among these qualities are total contents of aromatics and polyaromatics as low as 15 and 2 wt %, respectively.
INGLÊS

Microfiltration: Principles, Process And Applications

212,00€ + 10% EM CARTÃO

DISPONIBILIDADE IMEDIATA

 This book titled "Microfiltration: Principle, Process and Applications" is formed of 6 chapters covering many research aspects on microfiltration. These aspects include reviews and original research dealing mainly with fouling and cleaning of microfiltration membranes. In Chapter 1, mechanisms of fouling and factors affecting the fouling are presented. Also, it deals with techniques that assist mitigation of membrane fouling that occurs in microfiltration. The aim of Chapter 2 was the modelling and optimization by artificial neural network and genetic algorithm of yeast suspensions turbulence promoter assisted cross-flow microfiltration in concentration operation mode. Chapter 3 focuses on the principles, developments, implementation and application of microfiltration in wastewater treatment. In addition, the integration of microfiltration with other water and wastewater treatment technique is also included as well as the advantages and disadvantage of the microfiltration. The Chapter 4 objective is to introduce the most commonly used turbulence promoters’ types. Furthermore, congenial studies on the turbulence promoters’ application in the cross-flow MF regarding food industry streams and products are also presented within the chapter. In Chapter 5, the microfiltration process was used in order to obtain concentrated papaya (Carica papaya L.) pulp, evaluating the flux permeate from papaya treated pulp with enzyme pectinase and using different nominal mass molecular weights and different membranes materials. Chapter 6 discusses the performances and the quality of treated water of a Tunisian textile industry through a low-cost tubular ceramic membrane prepared by extrusion of a plastic paste prepared from clay powder mixed with organic additives and water.
INGLÊS

Heat Conduction: Methods, Applications And Research

212,00€ + 10% EM CARTÃO

DISPONIBILIDADE IMEDIATA

 Heat conduction plays an important role in energy transfer at the macro, micro and nano scales. This book collates research results developed by scientists from different countries but with common research interest in the modelling of heat conduction problems. The results reported encompass heat conduction problems related to the Stefan problem, phase change materials related to energy consumption in buildings, the porous media problem with Bingham plastic fluids, thermosolutal convection, rewetting problems and fractional models with singular and non-singular kernels. The variety of analytical and numerical techniques used includes the classical heat-balance integral method in its refined version, double-integration technique and variational formulation applied to the integer-order and fractional models with memories. This book cannot present the entire rich area of problems related to heat conduction, but allows readers to see some new trends and approaches in the modelling technologies. In this context, the fractional models with singular and non-singular kernels and the development of the integration techniques related to the integral-balance approach form fresh fluxes of ideas to this classical engineering area of research. The book is oriented to researchers, masters and PhD students involved in heat conduction problems with a variety of applications and could serve as a rich reference source and a collection of texts provoking new ideas.
INGLÊS

Metals And Metal-Based Electrocatalytic Materials For Alternative Energy Sources And Electronics

304,75€ + 10% EM CARTÃO

DISPONIBILIDADE IMEDIATA

 The important role of metals, their oxides and catalytically interactive supports in contemporary investigations related to rational construction of next-generation devices as alternative energy sources and hi-tech electronics is ambitiously presented throughout this book. The topics involve:Carbonaceous and non-typical platinum-based nanostructured electrode materials as promising candidates for anodic reactions in low-temperature fuel cells; Ruthenium oxide as electroactive material, presented through its innovative synthesis routes involving microwave heating and ultrasonic spray pyrolysis, with the focus on its performances as an electrochemical supercapacitor, but also as a part of multicomponent electrode coating in electrocatalysis of chlorine and oxygen evolution; Alkaline water electrolysis as the simplest method for hydrogen production especially when using renewable energy sources, offering the advantage of simplicity and environmentally clean technology with zero emission of greenhouse gases; New frontiers in electroconductive composite materials and biopolymers combined with noble metal nanoparticles that can be used in nanoelectronics and medical nanotechnologies; The possibilities for the operational improvement of an aluminum-air battery presented through alternative modifications of an Al-anode by alloying with magnesium and electromagnetic bulk structure homogenization; The improvements of copper-based materials as well as the research toward sustainable production of copper itself as an important component for further development of electronic devices.
INGLÊS

General Toxicology

184,18€ + 10% EM CARTÃO

DISPONIBILIDADE IMEDIATA

 Natural toxicants have been known from ancient times and man used them to gain various benefits by producing remedies, preserving goods or using them as a means for homicide. This book presents the vastness of the toxicological scope by outlining the encounter with toxicants of different origins, their fate in human body and the effects produced.
INGLÊS

Chromatography: Types, Techniques And Methods

523,38€ + 10% EM CARTÃO

DISPONIBILIDADE IMEDIATA

 Chromatography is the collective term for a set of laboratory techniques for the separation of mixtures. This book covers such topics as: analysis of veterinary drugs using chromatographic techniques, liquid chromatography for the determination of mycotoxins in foods, chromatography in the research of phenolic secondary metabolites and others.
INGLÊS

Oxford Student Texts: Robert Browning

de Robert Browning

ESGOTADO OU NÃO DISPONÍVEL

 One of a series, this one concentrating on the poetry of Robert Browning

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