für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Basil (Ocimum basilicum) is known locally in Sudan as rihan . The plant is aromatic and exists in Sudan as a wild plant, widely spread, as well as cultivated for ornamental purposes. There is no use for basil herb in Sudan. The main objectives of this study, to analyze the chemical constituents of basils especially essential oil components accordingly, it will be possible to classify Sudanese basils according to the world-wide known classifications and to investigate some biological activities of basil oils. The seed (fixed) oil is another economic product from basil plants since this oil has potential industrial uses. However, Sudanese basils have so far not been chemically evaluated or investigated to determine essential oil composition and subsequently classify Sudanese basils into chemical groups or profiles in order to suit world market requirements especially if ever basil is to be commercially produced in Sudan as an agricultural crop for export. Such classification will help in selecting the right cultivar to grow for a specific market and knowing the oil constituents will help to identify the end use of the oil, as food flavours or for biological activity. ····· 10361133786
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This book is an introduction to carbon nanotube synthesis and properties working principles of supercapacitor and lithium-ion battery as well as the applications of carbon nanotube film in various electrochemical energy storage devices. In Chapter 2, a simple method to fabricate tandem structure of porous silicon film on carbon nanotube film to significantly improve cycling stability of silicon film as lithium-ion battery anode material was demonstrated. With the new structure, both reversible specific capacity and cycling stability are remarkably improved. Carbon nanotube films also exhibit a promising application in stretchable supercapacitors based on buckled carbon nanotube film electrodes for unusual power source applications in Chapter 3. The stretchability depends on the level of pre-stain applied on the PDMS substrate, which could be as high as 30%. This stretchable supercapacitor just enlightens a broad area of stretchable energy storage devices, which are naturally compatible with the developed stretchable electronics. ····· 10361133713
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Zeolites are microporous crystalline materials essentially formed from corner sharing SiO4 and TO4 (T= Al, Ga, B, Ti, etc.,) tetrahedra and owing to their structural features these materials find wide range of commercial uses such as adsorbents, ion exchangers, and catalysts. The broad range of applications has attracted significant interest in microscopic and macroscopic aspects of the sorption and chemical transformations in this class of catalysts. So it is obligatory to have the structural knowledge of these materials in hydrated and dehydrated state in order to better understand the performance of these materials. The understanding of the structural behavior of these materials upon heating is of great importance, because only in the dehydrated state and under operating conditions (high temperature), the molecular sieve effects are observed. ····· 10361133636
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Reaction system of acetylene ,Ammonia and water vapor on heating for varying periods under wetting drying conditions of primitive sea in presence and absence of Montmorillonite clay with or without divalent cations showed the formation of purine and pyrimidine bases in aprreciable ammount.Formation of nucleic acid bases seem to depend on the duration of heating as well as on the presence and absence of Montmorillonite clay in presence and absence of divalent cations. ····· 10361133547
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray When from last few decades the world is facing the problem of water pollution and scarcity of conventional fuel. A new approach is required to produce the new alternate sources of fuel and check on water pollution. This research provides an alternate pathway of formation of fuel by treating the industrial effluents. In the developing countries the industrial waste water dumping is the main problem. This coloured water is the main cause of water pollution in these countries. The government spends millions of rupees every year to control this type of pollution. This research full fill both concerns, one is the pollution control and second is the formation of organic fuels. This work requires a great attention of those environmental fellows and chemists which really want to check the pollution causes by these industries. The main emphasis is taken to reduce the carbonates by the use of industrial waste water having dyes and convert into low molecular weight hydrocarbons. ····· 10361133483
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Identification of new biochemical compounds from plants or microorganisms is a great target that serves different fields of science. For example in the agricultural field, identification of a new inhibitory compound against a plant pathogen (microorganism, insect, parasitic weed or nematodes) can be used for control of this pathogen by biotechnological means. On other hand, identification of a new antimicrobial agent against human or animal pathogens is also a noble target. Methods for extraction, purification and chemical structure elucidation of both organic and proteineous bio-active compounds against different types of plant or human pathogens, from different sample types (plant, root exudates, microorganisms and algae) are described in detail in this book.This book will be a helpful guide for the researchers in the agricultural, human and animal health and environmental fields. ····· 10361133467
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Horse gram is one of the lesser known legumes. In India it is grown to be used as food and fodder. The traditional healers specialized in the treatment of kidney stone, grow kulthi crop for their patients. The most important features of horse gram are that it can be grown in scanty supply of water and extreme weather conditions. Species of horse gram are been cultivated in some parts of India, however these species are completely unnoticed for their nutritional value. The present study should help shed some light on nutritional as well as medicinal value of kulthi. The analysis should be useful in the areas of nutrition, pharmacy, and agriculture and can have an effect on the economy in the long run if its cultivation is taken seriously. Considerable nutritional value, low cultivation cost can be advantages in the unprivileged areas to overcome malnutrition. ····· 10361133418
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This book investigates the water pollution due to Water-soluble chemical waste by multivariate statistical analysis. Also explains the different statistical methods for water quality assessment, including latest concepts and developments in the field with global and user-friendly approach. This features a systematic introduction to the types of water resources, contamination due to waste, origin of water pollutants, their effects on the environment and methods available to measure them. It also suggests statistical principles for controlling and monitoring of pollution-causing chemical waste in reference to highly populated city. Statistical Model capable to be formulated for estimating the location wise pollution load generation and pollution level forecasting and provide as a decision support system for better management of water resources and control of water pollution. The overall variation in the chemical parameters has been demonstrated in form of a seasonal assessment for different samples. Results were given by Complete statistical evaluation containing descriptive statistics, Correlation matrix, Principal Component Analysis, Factor analysis and Cluster analysis. ····· 10361133412
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The industrial use of agricultural commodities has been an issue generating a signi cant amount of interest. As the cost of petroleum-derived products increases, the need to change to a more biobased economy can be clearly seen. In addition to food uses, plant oils have found their way into industrial products in the plastics, pharmaceutical, inks, adhesives, coatings, and many other industries. The advantages of plant oil-derived industrial products can be illustrated by several of the 12 principles of green chemistry including the call for the use of renewable feedstock, the minimization of hazards, and the generation of substances with as little toxicity as possible. Because of their biobased nature, products formed from plant oil are often biodegradable, and because the CO2 generated from their degradation can be incorporated into the next year s crop, they can be nearly CO2 neutral. ····· 10361133363
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray There is a general perception that there are too many accidents near schools. The main objective of this book is to investigate the accident situation near schools in Newcastle and Gateshead. Five years of accident data from 2004 to 2009 in 500 meter radius of each school is used for this study. This data is obtained from TADU database and no data has been obtained from hospital and insurance companies. An aggregated approach of accident analysis is used in this study. GIS techniques along with statistical software are used to carry out the analysis. A more specific objective is to scrutinise the impacts of school safety zone on accidents in Newcastle. The analysis evaluated the frequency of accidents before and after the implementation of safety zone of 64 schools in Newcastle. It was found against the perception of people that there are not too many accidents directly outside the schools. ····· 10361133259
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Due to changes in land use patterns and increased application of agrochemicals in Kenya, there is concern of the fate of pesticide residues in the catchments. Residues of pesticides which are applied in the farms find their way into nearby rivers and pose a threat to aquatic ecosystems and to human beings. Metribuzin (4-amino-6-tert-butyl-4, 5-dinylthio 1, 2, 4 triazin-5-one) is a systematic and contact herbicide with a broad spectrum of activity against many agricultural pests. Large quantities of metribuzin are used to control weeds in Nzoia sugarcane fields, Mumias Sugar belt, Sony sugarcane fields as well as in wheat and maize farming in Eldoret and tea farming in Kericho. This book presents theory as a background to the facts of the herbicide metribuzin as an agrochemical used extensively in Kenyan farming practices and its fate from the point of application with the influence of adsorption, desorption, leaching and dissipation properties studied under standard methods. ····· 10361133254
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Uncaria gambir, a native Southeast Asia herbal plant has been characterized and studied as a mild steel corrosion inhibitor in acidic media. It was revealed that ethyl acetate gambir extract gave the highest condensed tannin, phenol and flavonoid content compared with other solvent extracts. Quantification studies by means of HPLC have shown that more than 80 % (wt) of gambir extract consists mainly of catechin. The effect of both ethyl acetate gambir extract and (+)-catechin hydrate as corrosion inhibitors for mild steel in 1 M HCl solution was done using various techniques such as weight loss, potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) measurements. It was revealed that inhibition was concentration dependent as inhibition efficiency (IE) increases with the increase in the inhibitor concentration. Potentiodynamic polarization measurement indicated that the inhibitors act as mixed-type inhibitors with predominant anodic inhibition. EIS measurement indicated that the corrosion of mild steel in the absence and presence of inhibitor was mainly controlled by charge transfer process. ····· 10361133213
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Angiogenesis can be explained as the growth of new blood vessels from pre-existing vasculature. It has an important and vital role in growth and development, as well as in wound healing. Anti-angiogenic substances suppress the growth of new blood vessels so prevent nutrients and oxygen needed for the growing of tumor cells. It is proposed that tumor angiogenesis could serve as a potential target for anticancer therapy. Combretastatin (CA-4) is an anti-angiogenesis agent that inhibits the tubulin polymerization. CA-4 exhibits anti-tumor effects through the well-organized therapeutic mechanism of tumor blood supply disabling. By affecting selectively and blocking tumor vasculature, CA-4 reduces the blood supply needed for tumor growth and survival. As a result of oxygen poverty and build-up of tumor metabolic by-products causes the death of the cancer cells within the central core of the tumor. In this thesis, covalent modification of CA-4 has been investigated. Variety of CA-4 analogs which involved blocking the free alcohol group has been synthesized. ····· 10361133192
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This book deals with the Introduction to various types of Environmental Pollution and diverse effects of Metal ion pollution. A fair Introduction was given about different kinds of Currents and their application in Analytical Chemistry. Production of Simple Catalytic & Catalytic Hydrogen Currents were explained with examples. Dithiocarbamte Chemistry was mentioned and two ligands such as Ammonium Piperidine Dithiocarbamate and Ammonium Morpholine Dithiocarbamate were synthesized and applied for the Estimation of Copper concentration in various Matrices of Environmental Importance at Dropping Mercury Electrode. The Results obtaines were compared with DIfferential Pulse Polarography in terems of Student-`t`-test and Variance Ratio `f`-test which indicated the statistical soundness of the Chapter. The developed was facile, sensitive, rapid and economical for the analysis of copper. This can also employed in commercial laboratories for routine quality control analysis. ····· 10361133185
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray The result and discussion part of this book monitors a detailed in-depth mechanistic study with respect to the controlling effect of steric as well as electronic factors on photo-reactivity of mixed enones confined within semi cyclic framework. Proper justification in this area has been strongly supported by the exploratory research work exemplified by the author. In the review part of this book reader will also find a point to point discussion on photochemistry of enones, particularly in terms of alpha, bata- and beta, gamma-counterparts, in a very comprehensive manner starting from the very basic level to the advanced stage. Puckering of the geometry within this semi cyclic framework also becomes a constitutional factor to impose regio- as well as chemo-selectivity for the Wiitig reactions carried out on such kind of mixed enones. Content of the second chapter of this book has been purely focused on the effect of concentration on quantum yield. This typical uncommon effect has its selectiveness for a particular type of photo-product, the formation of which is very much dependent on the nature of the substitute pattern embedded with the substrate enone molecules. ····· 10361133067
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray There is an ever increasing demand for high energy density storage devices for pulse power applications. Polymer composites offers a solution as it incorporates the high charge storage capability of the filler particles with graceful failure mechanisms of the matrix polymer. A significant challenge in realizing the potential of these systems is the poor interaction between the filler particles and the polymer. This work attempts to develop a composite with novel mixed metal phosphonate fillers. These fillers have been observed to better disperse in the polymer matrix compared to unmodified and surface-modified fillers. In addition, an embedded-sphere method was developed to measure dielectric breakdown strength in composites. This technique helped in minimizing low-field breakdown events due to the deleterious effects of the surrounding medium. A combination of these approaches has resulted in a 3-fold increase in stored electrical energy in composites over plain polymer. ····· 10361133004
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Lycopersicon esculentum Mill belongs to family Solanaceae and is a very prominent vegetable of Malakand Division, Pakistan and is also a cash crop of the local community. The people of this region are fully involved in its production and are distributed throughout the country even outside the country also. The habitate of this plant is very fertile and the farmers used manure and synthetic fertilizers for the fulfillment of the nutrients requirements to the plant body. The farmers also using the pesticides for the killing of pest. Therefore the determination of pesticides fraction is another interesting area for exploration its nutritional status. For this purpose the samples of plant habitate and seeds were collected from village Gharri Swat District and were investigated for pH, micronutrients and macronutrients. Some of the parameters were found in trace quantities. However it fulfills the nutritional profile of the consumers. The role and chemistry of each nutrient in the soil and in the human body has been discussed for the public awareness. However the concentration of nutrients can vary from place to place and even from region to region. ····· 10361132661
für 71.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In present research, the combustion of CNG is simulated using the kinetic reaction mechanisms in Internal Combustion (IC) engines. These mechanisms are primarily investigated to predict the formation of gaseous pollutant such as Carbon monoxide (CO), Oxides nitrogen (NO & NO2) and ammonia (NH3) due to combustion of CNG in IC engine. In spite of the existence of some discrepancies among the simulation profiles, Mechanism-IV (consisting of 208 elementary reactions & 72 species) exhibits the closer agreement with the experimental data under the given engine operating conditions. This mechanism is containing the reactions feasible at range of temperature conditions of low (below 800 K) to high (1000 K). In this mechanism, major primary types of reactions include Unimolecular initiations, Bimolecular initiations, Beta-scissions, Oxidation, Branching, Metatheses, Combination and Dismutation. On the basis of this, it is concluded that Mechanism-IV is consisting of those kinds elementary reactions (both primary & secondary type) involved in the combustion of CNG in the automobile engine and is capable of predicting the formation of the selected criteria gaseous pollutants ····· 10361132521
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Charge transfer complexation between Rabeprazole and 2,3-dichloro-5,6-dicyano -1,4-benzoquinone (DDQ) as an acceptor has been investigated spectrophotometrically. Based on Job s method of continuous variation plots, the obtained results indicate the formation of 1:1 Charge transfer complex with general formula [(RA) (DDQ)] and Analyses carried out using literature data for backbone 15N NMR relaxation of 20 proteins that differ widely in their sequence, structure, and function show that the segments with defined secondary structural elements are generally stiff relative to less structured or unstructured regions. ····· 10361132475
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray Heterogeneous asymmetric catalysis remains as an exciting research field in chiral catalysis since the heterogeneous catalyst can be separated easily from the reaction mixture compare to conventional homogeneous catalyst. The aim of the research is to develop and investigate a novel heterogeneous asymmetric catalyst using amino acid as chiral promoter. The catalysts were synthesized by attachment of amino acids such as L-glutamic acid, L-leucine and L-phenylalanine onto the hydrophilic part of hydrolyzed octadecyltrichlorosilane (OTS). The amino acidhydrolyzed OTS materials were used as catalysts for the asymmetric hydration of epoxycyclohexene to yield two diastereoisomers, namely (1R,2R)-trans-1,2-cyclohexanediol, (1S,2S)-trans-1,2-cyclohexanediol and cis-1,2-cyclohexanediol. ····· 10361132413
für 44.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray When ionic anticancer drugs are used without drug delivery systems, they are absorbed in the entire body. This decreases the effectiveness of the drugs. In order to circumvent these demerits, micelles of AB and ABA diblock copolymer are used for the delivery of ionic drugs. But, most of these micelles get collapsed in the blood stream. Hence, these micelles are not effective for the delivery of ionic drugs. Hence, this book describes extensive research works on the frozen micelles based on the ABC triblock copolymers. This frozen micelle does not collapse immediately even it is diluted extremely in the blood stream. Hence, this micelle serves as a long-circulating drug carrier. This book also describes physicochemical properties of frozen micelles with drugs, polymers, surfactants, dyes and also describes mathematical modeling to predict the release kinetics of drugs from the micelle. It also describes the fabrication of nano-hybrids complexes because these complexes may give a new approach to nanotechnology. This book is useful for anyone who is interested in the formulation of drug, food, nanotechnology, polymer, colloid and surface chemistry. ····· 10361132403
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray This dissertation presents intensive survey of formose reaction (FR). Based on survey, strategies are discussed regard to synthesis of edible sugars. The reaction is crucial to the question of origin of life and is potential for regenerative life support systems in space flights. The FR is complex due to chain distribution of synthesized sugars including other products. Full conversion of HCHO is responsible for product complexity, whereas complexity is significantly lower under partial conversion. Hence, partial conversion with adjusted reaction conditions may represent a potential tool for production of edible sugars. This strategy requires development of corresponding separation methods (membrane techniques, process chromatography etc.) including closed cycle systems. Analysis of formose products is still problematic. In this work, attempts were made to improve the analysis in HPLC. The work served to better the current understanding of the reaction itself. Investigations were also conducted following the strategy for production of C3 or C6 carbohydrate with increased selectivity. The results are indicative to follow the time dependent development of the compounds precisely. ····· 10361132335
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray In recent years, the courses in chemistry have been considered extremely important for students desirous of pursuing basic science as well as technical education. Taking into consideration this trend, this book has been specially written for students who are interested in investigatory and innovative projects in chemistry. The unique feature of this book is that the basic, theory, procedure and conclusions for each project are given in comprehensive manner. In all 51 projects are included in this book from all the branches of chemistry viz. inorganic, organic, physical, analytical and general chemistry.some of them are: Antacid effectiveness analysis, Study of tea chemistry, study the foaming capacity of soaps, Study of constituents of brass and bronze, Preparation of potash alum from scrap aluminum, Extraction of essential oil from aniseed, preparation of pigments and poster paints using chemicals and reagents, Analysis of calcium, phosphate, chloride, magnesium and iron from bone ash, To Study the Setting of Cement, Comparative study and qualitative analysis of cold drinks, preparation of cuprammonium rayon threads from filter paper, Analysis of talcum powder etc. ····· 10361132258
für 53.10€ kaufen ···· Rheinberg-Buch.de - Bücher, eBooks, DVD & Blu-ray An intense research activity concentrated in the last decade has demonstrated that supercritical carbon dioxide can be used as an attractive alternative for the aqueous and organic solvents.This book presents an overview of the application of supercritical carbon dioxide, mainly focused on the synthesis of polymers such as vinyl polymers, conducting polymers, and biodegradable polymers. In addition, this book addresses the challenges for preparation of the polymeric nanoparticles by RESS and RESOLV methods. A small portion was also dedicated to carbon dioxide aided drug delivery and molecular encapsulation of drugs into different host materials. I believe that this book should be very helpful for scientists involved in multi-disciplinary research topics and industrial communities who are interested in the class of conducting polymers and biopolymers for drug delivery, and also the particle engineering with carbon dioxide for a wide range of applications. ····· 10361132147· 1 · ::::: · 6 ·· 7 ·· 8 ·· 9 ·· 10 ·· 11 ·· 12 · ::::: · 26 ·
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