Chemical Literature Reviews Samples For Students

Abstract

As the majority of the people are becoming more aware of the adverse effects of petroleum-based products consumption and of the continued diminishing of natural fuel oil reserves all over the world, the search for more environmentally friendly and renewable substitute is becoming the focus of many studies. Such substitute products include the soybean-based adhesives, and soybean-based adhesive bonded wood composites and particle boards. In this study, a “literature review” was conducted in order to identify the many issues associated with the search for a replacement for petroleum-based adhesives. Accordingly, the issues identified are (1) environmental friendliness, such as the biodegradability ...

Introduction

One of the byproducts of urban growth and development is the waste production. As per the report of the World Bank (2013), OECD countries produce almost half of the world's waste, while South Asia and Africa are listed as the regions producing the least amount of waste. The Basel Convention defines 'wastes' as substances or objects that need to be disposed of in accordance with the provisions of national law. European Waste Catalogue shows 850 types of wastes out of which 420 types of wastes have been classified as hazardous waste. Hazardous wastes are those wastes considered to be ...

Introduction

The paper presents the literature review on everyday chemistry and covers the following areas:
Food molecules.
Chemistry using kitchen chemicals.
Food safety from rotten products.
The paper used Google Scholar, WorldCat, Science Direct for literature search, and the key words were: food molecules, food chemistry, kitchen chemicals, food safety and rotten.

Types of Food Molecules

Every individual knows that food contains proteins, lipids and carbohydrates. These substances are the main nutrients and are responsible for energy supply for the body. There are numerous types, some are more complicated, some are simple; some are found in nature, and some are fully artificial. However, they ...

Introduction:

Clean non-polluted water is a major basic requirement for all the living things. Nowadays, its availability becomes a major problem in the ecosystem. This problem is expected to increase in the future due to population growth and industrialization processes. The processes discharge of domestic, industrial and agricultural wastes contribute largely to the contamination of existing natural waters in the environment. Therefore, at the present moment, it is important that the pathogens and pollutants are completely removed from the waste water to cater for the needs of domestic use, industrial use, and irrigation purposes. This paper discusses two processes of oxidation and ...

LITERATURE REVIEW: WATER TREATMENT

1.0 Literature Review: Water Treatment.
1.1 Water Quality:
Water quality is the measure of water condition in relation to the requirements of various biotic species, the environment, and/or any human needs and purposes. Water quality is determined by measuring and analyzing it chemical, biological, physical and radiological characteristics. Both natural and human activities influence water quality. Natural influences that affect water quality are mainly climatic, geological and hydrological since they affect both the quality and quantity of water available (Diersing 2009). The highest influence on water quality occurs when its quantity is low, yet the limited resource must be ...

Literature Review on Carbon Fibers

This paper sums up a literature review on a unique and astounding development in the field of Science, known as carbon fibers. Although, they were discovered during late 1800s for the first time, their true potential was not realized until mid 20th century, and even today, researchers are experimenting over new areas of application for carbon fibers. The paper will further discuss; different areas of application, the composition, structure and characteristics of the carbon fibers used, along with a list of merits and demerits of using carbon fiber in place of a traditional alternative in modern engineering.

Carbon fibers have molded into many ...

Applying the precautionary principle to consumer household cleaning product

Development.
Summary
Precautionary principle, which can be summarized as when an activity raises the threat of harm to human and the environment, preventive actions should be taken even if some cause and effect relationship are not fully established scientifically, is the common principle used to guide in managing scientific uncertainty in ingredient safety assessment (Cara , 2011). The available registered disinfectants in the consumer market are quaternary ammonium, sodium hypochlorite and Triclosan. However, there is a possibility of existence of the relation between these disinfectants and human health and environmental issues.
Triclosan is a spectrum anti-microbial found in anti-bacterial ...

Abstract- Literature 1

Edible oil refinement is one of the major problems faced by the developing countries across the world as edible oil effluents are a major source of environmental pollution. Owing to this, it is essential to ensure that the effluents are treated prior to its disposal. The composition, characteristics and quantity of the waste water generated depends on the operating conditions and processes followed and can vary from different organizations in the same industry. An investigative method comprising of an in-depth study of unit operations, monitoring, measurement and analysis of parameters affecting environment, and performance evaluation of utilities and pollution ...

Introduction

The production line refers to a set of sequential operations launched in a factory whereby the raw materials are passed via the refining process to produce tissue that is suitable to be used in institutions, households, and industries. The article by Ishakawa and Hirasawa (2012) describes how printing and aqueous lotion chemicals can be applied to improve the quality of tissue papers. Furthermore, the article by Abdulmalek and Rajgopal (2007) look deep on the benefits accrued from lean manufacturing and how they can benefit manufacturing companies. The paper will comprehensively address the production line, its ways, and advantages as ...

Abstract

PEBAX (Polyether Block Amide) is essentially a copolymer that offers the most comprehensive range of advantages among the several thermoplastic elastometers (TPE) that are available today. TPE is popular by the trade names of Vestamid E and Pebax as they are manufactured by two companies namely Evonik Industries and Arkema respectively. There are a number of favorable properties that Pebax use and because of such properties, it is currently being extensively used in a plethora of applications like industrial and medical as well. . Remarkable elastomeric properties, a wide range of service temperature, and in several cases, exceptionally great resistance ...

Raman spectroscopy is dependent on scattering of light. When light interacts with matter, energy exchange can take place through absorption, simulated emission, Raman scattering or spontaneous emission. In Raman scattering, the emitted photons have less energy and lower frequency in comparison with the absorbed photons. Some energy of the emitted photons is transferred to the molecules. Raman spectroscopy is a method which collects the chemical fingerprints associated with molecules. Every molecule has different levels of vibrational energy and the emitted photons experience shift in their wavelengths. The wavelength shifts are collected,examined and analyzed for sample identification. Raman spectroscopy ...

Literature Review

Abstract
Innovations and modifications that produce cost reductions and enhance performance have driven the evolution of the classic solid rocket and the liquid bipropellant rocket into hybrid models that integrate the predominant solid and liquid model features into more sensical, more economical fabrications of design. The commercial spacecraft demands for aerospace propulsion have also evolved to include a market for environmentally sustainable hybrid rocket engines that has yet to fully mature to the Technology Readiness Level (TRL). Numerical modeling has been used as a tool to test the feasibility of new solid fuel types. ABS has been considered as ...

in the industrial and infrastructure sector

Abstract

In most parts of the Arab countries, the limited resources of water pose adverse constraints to both the social and economic development, while also threatening the people’s livelihood. The available surface water keeps on declining, and the ground water over-pumping that goes beyond the natural recharge rates has continued to cause great negative impact in the lowering of water table. Over-pumping of ground water also increases ground water salinity, ground water depletion, and ecological degradation (SCENR 5). The outcome prompted the Qatar government to start regulating its water resources as a measure ...

Microfiltration ceramic and polymeric membrane filters have been used for the last century in the treatment of safe drinking water. Customers everywhere have been comparing which between the two types is cost friendly regarding capital, maintenance and operation cost in general. Research has as well been done to find washing and chemical cleaning efficiencies for the two membranes. For instance, ceramic microfiltration filters cost between US$32.56 to US$69.56 depending on the size, color, and manufacturer. Polymeric membrane filters cost about US$ 8.99 to US$ 15.45 in Amazon online shops. This shows that initial cost for polymeric filters ...

Needless to say that having a phobia is normal for every sane person, as everybody with a healthy mind is afraid of something. He or she could be afraid of some creature (fictional and/or real), of some event, some situation etc. Every fear or phobia of something is a kind of anxiety disorder, which is generally being defined as uncontrollable and prevalent fear of a situation or an object, which is needed to be avoided by a person. It is identified by the person’s mind as a real danger to his/her existence, even when a situation or an object appears to be objectively safe; therefore, ...

In order to allow for free movement of electrons, graphitic carbon materials have a tendency of sharing crystalline domain (Fitzer & Köchling, 1992) for increased conductivity (Walker, P. L., 1973). In the study carried out by (Novoselov, et al.; Bazaroz & Nikolaev, 1989; Liu et al., 2004; Harfanist et al., 2004; Coleman et al., 2006), the use of graphitic carbon in several applications including the next generation electronics, composite materials (Coleman et al., 2006; Chen, I.-H., Chen, C.-Y., & Wang, 2010), activated carbon fibers, fuel cells (Wang, Zhao, & Niu, 2007; Marta, et al, 2008), sensors and batteries (Besenhard, 1999; Hess, Lebraud & Levasseur, ...

The excellence of the air around us is referred as ‘air quality'. In the case when the area is given good air quality credit, then it means that the air around the area is clean and most of all, unpolluted. Clean air is the most important aspects required for all living creatures on this planet. There are variant factors that causing poor air quality or pollute the air. The emissions from factories and vehicles used to play a major role in air pollution toxins. When the concentration of the pollutants reaches beyond the mark and can affect the health of ...

Introduction

Tensile testing is usually conducted to select a material for its application, quality control, and to forecast how the material is likely to react on deployment of different types of forces. The properties evaluated through the tensile test include the ultimate tensile strength, the maximum elongation, X-area reduction and so forth. These evaluations facilitate determination of such properties as Young’s Modulus, yield strength, Poisson’s ratio, and the characteristics of strain hardening [1. 2]. Tensile testing on glass fibre is, thus, performed to determine the quality of the material it contains, and to ascertain its suitability for various applications.

History of Fibre Glass

...

The Bhopal disaster

- Causes
The Bhopal disaster, was an industrial accident that occurred on the night of the night of the 2-3 of December at a pesticide plant in Bhopal India .[1] The company that owned the plant was the Union Carbide India Limited (UCIL), a subsidiary of the American company Union Carbide Cooperation (UCC).Over 500,000 people were exposed to methyl isocyanate gas (MIC) and other chemicals leading to the instant death of more than 3,800 people and causing significant health problems to thousands of people who lived around the plant.
The manufacturing process employed in the plant ...

Introduction

Membrane filtration is a technique used to separate a liquid from any particles present in it. In membrane filtration, a liquid is passed through a semi-permeable membrane. The size of the pores on the membrane determines its permeability thereby enabling the membrane to act as a barrier to all particles larger than the pore sizes. Different approaches and systems can be employed in membrane filtration depending on the type and capacity of the liquid being purified but the overall goal is to obtain a clean liquid. Membrane filtration can be used in the treatment of wastewater, filtering milk during its processing among other applications. This ...

Introduction

There are numerous descriptions of drowning that are available and actually, all of them bear some weight. According to Lunette, G., et.al death by drowning is the consequence of a obstruction of respiration by impediment of mouth and nose by a liquid medium which is more often than not water (2004). Actually, there are many other drowning definitions wherein all have some accuracy. In regards to true drowning, there are relatively no considerable disagreements, since there is a general conduit, which involves the water inhalation, which could eventually pass through the alveolo-capillary membrane thus eventually reaching the general circulation ultimately. Characteristically, a difference ...

Literature review

In the history of the construction of sea structures in oil exploration, load and corrosion together with how those structures will be maintained have always posed a scientific nightmare. Chamberlain, Adam and other authors in a scientific journal illustrate that for a good design of an onshore structure, there should be a right proportion of the ingredients in order for the structure to give maximum life service. They all agreed that in order to achieve this, keen interest should be paid to the permeability, strength, and durability of the mixture. Finally, they added that for effective control of corrosion, ...

Introduction

Nanotechnology is a new venture for engineering field and has been seen as a breakthrough regarding materials thus providing a greater opportunity in enhancing both innovations as well as discovery in engineering and science fields. The primary application within the engineering sector have been; to create room for new nanofabrication technologies to improve nanostructures designing and construction which have by-passed the current technology. Additionally, it provides a chance to apply nanostructures in various devices such as magnets, optics, electronics and biotechnology devices (Dvir et al., 13-22). The opportunity is significant because the technology enhances innovation of materials as well ...

Introduction

The above quote alludes to the pliability and the malleability of plastic. Plastic is defined by the online version of the Merriam-Webster Dictionary as a synthetic material which is comprised of a variety of organic polymers which can be moulded into a shape while soft, and then set into a rigid, yet slightly flexible form. Glass fibre reinforced plastic (GFRP) is plastic which has been reinforced or strengthened by the use of glass fibres. This composite material has been used in the construction of large-scale items such as luxury boats, missiles, and tanks, and small-scale items, such as tubs, fans, hoods and scrubbers [ ...

The ubiquitous climate change and the attendant consequences in the forms of flash floods, earthquakes, tsunamis etc has further intensified efforts at seeking alternative sources of energy to the currently used fossil fuels that contribute so much to the deterioration of the environment and the menace of climate change. The alternative forms of energy, termed green energy are renewable sources of energy e.g. solar energy. Theses green sources of energy do not contribute to the deterioration of the environment. The industrial production of hydrogen gas H2 is dependent on heavy use of fossil fuel-generated electricity to power the process ...

Lehn defines the concept of Supramolecular chemistry as 'chemistry beyond the molecule'; chemistry of the intermolecular bond that includes the functions and structures of the entities resulting from the bonding between multiple chemical species. According to Vogtle and Alfter (1991), supramolecular chemistry, contrary to molecular chemistry, is based on intermolecular bonding or interactions, while the later is predominantly based on the covalent bonding of atoms. In other words, supramolecular chemistry deals with the bonding between two or more building blocks that are bound together by means of intermolecular bonds.
The aforesaid concept bears on the organized entities of ...

Introduction

Cigarette collection systems comprise of the major ways that several companies including Tobacco manufacturing industries that help as one of the strategies in managing effect of cigarette butts in littering bins that is currently a big challenge in urban areas.
According to Riutta, (2012), it is imperative to address this topic of issues concerning cigarette butts in our daily city lives because of the high negative impact they have on our environment, and thus health being one of the leading causes of preventable deaths. According to health analysts, cigarette butts are made from a fibrous material that is essential ...

Hansch Analysis

Hansch analysis is used widely in the field of medicinal chemistry. It is the analysis that investigates the quantitative relationship and correlation between the compound’s biological activities with their physicochemical substituents. The global parameters considered in this method include the electronic, steric, hydrophobic, and other effects that use multiple correlation methodology (IUPAC). Application of the Hansch analysis includes the Quantitative Structure-Activity Relationship (QSAR). This application develops correlations between activity of the ligands and their properties. As a rule of the thumb, the Hansch model “gives information about the number of parameters to be selected for regression analysis in ...

Introduction

Many countries across the world are faced with the problem of water and soil contamination. The contaminations are caused by industrial effluents, military actions and agricultural activities among others. Human carelessness and ignorance also contribute significantly to water contamination. As a result, new biological, chemical and natural activities have been invented in order to control water contamination. One of the most successful measures used in control of water contamination is phytoremediation. It involves the use of plants to absorb pollutants from contaminated water found on the surface of the land and in the soil. This paper discusses the biological ...

Kathyann

Abstract
Dental care substances with stannous fluoride as an active ingredient may be helpful in allowing re-hardening or in increasing the resistance of teeth surfaces to further acidic or mechanical impacts. However, stannous fluorides are applied together with brushing and depending on how and when tooth-brushing occurs. This research focuses on the potential harmful and helpful effects associated with the use of stannous concerning erosive wear. Active ingredients like fluorides or agents that have unique anti-erosive properties were shown to offer protection against erosion and combined erosion and abrasion to some extent. The abrasive effects of dentifrices may ...

1.1 Overview
Quantum mechanics is a branch of Physics that deals with the behaviors of energy and matter in the smallest perspective such as the nuclear, atomic, and microscopic levels. Quantum, meaning “how much”, refers to the quantifiable units to energy and matter as observed and predicted through physics. This branch of studies stated with mathematical reasoning of certain experiments that are non-explainable through the classical mathematical methods. Physics revolutionized during the early 20th century (Coolman, 2014). Various models has been developed by scientists since them to help them in their experiments in studying particular behaviors of reaction mechanisms ...

Abstract

Gum inflammation is a gingival disorder which is characterized by soreness, reddening and pain in gums. The source of such inflammation is an auto-immune reaction of the body within the oral cavity as a response to a negative impact of bacterial, chemical, physical or other nature. Apart from the most popular form of gingival inflammation due to decay, which is perceived as the prevalent form of gingivitis and may lead to subsequent periodontitis, there are several other factors that can contribute to gum inflammation of seemingly healthy people. These factors have uncommon origin and may require different methods of treatment. The aim ...

Labour Force of Ireland

A close look into the labour force of Ireland, in accordance to the Census of 2011, shows that total count of labour force as noted in April 2011 has been estimated as 2,232,203, which is an increase assessed to be 122,705, or to be more precise 5.8% since the year 2006. Therefore, a straight statement can be declared about the annual average growth to be 1.1 % that is notably lesser than former intercensal duration of growth that has been declared to have an average of 4% per annum. A detailed declaration made by CSO (2012) is as ...

Mitochondria are important organelles found in all nucleated cells contained in both plants and animals. It is because they are the sites in which organic substrates are oxidized to generate adenosine triphosphate (ATP), a substance normally used as a provider of chemical power. This energy produced is used up in most intercellular processes (Pon & Schon, 2011). This discourse will analyze the difference that exists in mitochondrial movement, in plants and animals.
Notable differences between plant mitochondria movements and animal mitochondria movements do occur mainly because of the physical and integral distinctions that are found between the two organisms. To execute ...

Perhaps the most important advance in using new building materials is the development of concrete which is more durable. New- age concrete is flexible and endows all kinds of structures, buildings, roads, sewers and bridges which last for a very long time. The construction industry in the world is becoming modern and advance, however, there is still the problem of building defects which need to be addressed.
Defects to concrete facades of different buildings pose safety danger to the public; hence there is a need and formidable challenge to rethink on the issue. Successful remediation requires an adequate understanding of ...

Introduction

A comparative literature review was conducted as the first phase of our research projected and it main goals focused on the effects of terrorism in developing countries. The study area of literature review was carried out in Portland. The main aim was to determine the outcomes that the communities and effect of terrorism in one’s country. The study reveals that fire service agencies in the United States are facing new and more difficulties challenges in regulating. According to the review it is noted that terrorism creates fear and causes instability hence negative impact on the economy of Portland ( ...

Introduction

Pharmaceutical companies should create and follow a standard operating procedure by implementing a cleaning validation to ensure future patient safety. Validation has received great attention by the FDA in recent inspections. Manufacturers must validate their cleaning process to ensure compliance with GMP regulations 1. One of the main keys in the manufacturing of dosage formulation is to develop cleaning procedures that will remove all types of residues from the equipment and containers. The goal of Cleaning Validation is to ensure effectiveness in cleaning equipment, and to prevent pollution and cross contamination of drug products to ensure the quality, safety; efficacy and ...

Abstract

Methamphetamine, known to the world in various names such as “crank” or simply “meth”, is notable for having severe effects similar to that of marijuana. While it is reported and proven to be capable of treating several psychological and physical disorders, the known stimulant is capable of producing heavy complications in terms of a users’ physical, neurological, psychological and social nature that may be difficult to heal. In terms of its effects to children, parents and pregnant women; the effects of methamphetamine vary. However, heavy physical, behavioral and social disorders would be visible to these groups since methamphetamine can cause ...

Patient Situation and Literature Review

Patients receiving chemotherapy treatment for cancer experience a great deal of extremely unpleasant and severe side effects. These include immunosuppression, anemia, thrombocytopenia, gastrointestinal symptoms, peripheral neuropathy, alopecia and fatigue (Chemotherapy side effects, n.d.). Effectively managing these symptoms increases patient quality of life despite serious and potentially terminal illness and promotes compliance with treatment in order to optimize the benefits (Perwitasari et al., 2012). Nausea and vomiting are particularly distressing symptoms among patients and nurses working in the oncology ward must be knowledgeable regarding the range of pharmacologic and nonpharmacologic techniques which can be used for control. This paper presents the ...

British Petroleum – Perspectives on Gulf of Mexico’s Oil Spill

Introduction
The Deep Horizon oil spill caused by British Petrouleum’s improper operations in the Gulf of Mexico on April 20, 2010, marked an environmental catastrophe, although BP has tried to minimize its effects and its outcomes. In her article, “BP’s Deep Secrets”, Julia Whitty investigates precisely the outcomes of the oil spill on a long term, focusing mostly on the Gulf ecosystem and following how are the flora and fauna from this area are affected by this catastrophe.
The current essay, based on Julia Whitty’s article will be supported by other sources that have treated ...