Essays on Chemical

Complete the following questions:

What factors contribute to malnutrition in both developing countries and developed countries? Answer: The causes of malnutrition are diverse in developed and developing countries. The factors are determined by the availability of food, types of food and demographical influences. In developing countries, the main reason is unavailability of food. On the other hand, the reason for malnutrition in developed countries is high calorie diet lacking in essential vitamins and minerals. Obesity and overweight are also forms of malnutrition (Mandal).

What foods might be economically introduced to these diets to help address the problem?

Answer: For developing countries, the need of the hour is to provide Protein and Calorie rich food. Pulses can act ...

Introduction

Exom sequencing is also known as whole exom sequencing (WES). This sequencing technique is used to sequence all the expressed genes in a genome also called as exom. It is one of the most widely used targeted sequencing methods. The exom which is the protein coding region of the human genome consists of less than 2% of the genetic code. This region is responsible for containing more than 85% of known disease-related variants. Thus, whole exom sequencing is a cost-effective alternative to whole genome sequencing (WGS). This technique is efficient in identifying coding variants across a wide range of ...

{Author Name [first-name middle-name-initials last-name]} {Institution Affiliation [name of Author’s institute]} Behavior and substance abuse related issues are also a challenge to the every section of the society. The problem of substance abuse has been common across all the cultures and occupations as well as nursing profession. The data suggests that one out of ten nurses may be impaired, taking drugs or has been a drug addict. According to the calculations of the American Nurses Association (1997) 10-20% nurses have the problem of chemical impairment or substance abuse and 6% to 8% registered nurses are the victim of ...

A chemist may be draw to the science because it contains physics and mathematics, with results clearly defined. On the other hand, biology can be messy, with fluids and disrupted bodies and patient suffering. For the nursing professional, there may be the temptation to define a physical process present in a patient as either biological or chemical. Technically, the definition for biology is simply the “scientific study of living organisms” (TheFreeDictionary.com), while chemistry is “a science that deals with the composition, structure, and properties of substances and of the transformations that they undergo” (Merriam-webster.com). However, the lines blur when ...

Abstract

The ecological settings in an ecosystem change from time to time. The changes in the ecological settings are brought about by a plethora of factors. Through evolution, the organisms that live in the ecosystem also change to adapt to the aforementioned ecological changes. The adaptation of the organisms to the ecological changes yields variations because different organisms and even organisms of the same species are exposed to the elements to different levels. Man has a significant role to play in the ecological changes. Through his economic activities, the effect on ecosystems has been both positive and negative. Urbanization as ...

It is clear all of the contracted workers associated with the case study all completed their orientation training. At the same time, these new employees were tasked with the job of isolating the acid feed steam for the Claus unit, which they failed to do. This paper will discuss the hazards present, the steps the incident command must conduct, explain changes to plan if polymerization occurs, and explains changes to plan based on the result of the post incident critique. First of all, it is clear continuous training is essential to the refreshment of knowledge in order to avoid ...

Inquiry

This paper provides a response to the inquiry: "How does the structure/specific property/shape of ceramic biomaterials influence their performance in hip implants?" The principal objective of coming up with the script is to analyze the existing literature on the use of ceramics as biomaterials. A lot of research is underway to optimize the use of ceramics in hip implants. The following subsections cover the literature on the effect of the shape, specific structure, and structure of ceramics as hip implants.

Introduction

Biomaterials are now an active area of research in Material Science Engineering globally. The term ‘biomaterials’ describes a wide ...

Aims and Objectives of the Experiment

This experiment aims at studying the characteristics of titrations with the strength of different acids used in these titrations. This is done by drawing the titration curves of the different titrations that are carried out in this experiment and interpreting those curves. The units of measurement for this experiment are the standard units that are used in titrations. These are molarity (moles/liter) of substances while the quantities are measured in mL (milliliter).

Theory and Principles

Conductometry is a type of electroanalytical method in analytical chemistry. While other electroanalytical methods use equilibria or electrodes, conductometry is different and employs the conductance of materials ...

Weathering and erosion are two basic events that take place on earth as part of the wear and tear of the natural resources like rocks, soils, and plants and trees that cover the earth. Closely observing weathering and erosion will help understand how the surface of the planet has been changing over the past several years and how it will change in the future as well. Weathering is the process through which rocks on the surface of the earth gradually break down into small pieces. On the other hand, erosion is the process through which the broken pieces and ...

The history of food preservation begins with the understanding that the spoilage of food

begins from the moment it is harvested and left in open air. The earliest of methods used by man included freezing meat in the winter or drying certain foods under the sun. One of the ways by which man could move from one place to another while carrying an ample supply of food was by preserving it and preventing meats and other food stuff from spoiling. The need to kill and eat foods all at one time was prevented by the idea of food preservation. It is noted that different civilizations used various methods of preservation, mainly those which ...

Question: what is the appropriate method of identifying compounds as either ionic or covalent based?

Background/Hypothesis Ionic compounds are created from the strong electrostatic bonding between ions (Brinker, and George 393). The covalent compounds have are formed by bonds that result from sharing of electrons (Mah 31).

Solubility test Conductivity test Melting point test Color and odor test Oxidation with oxygen test Steps/Procedures. Solubility test 0.25 grams of the chemical was placed in a test tube. 1 mL of water was added and stirred using a stirring rod. The addition of I mL was added until the chemical dissolved. The chemical that did not dissolve after adding 10 mL of water was recorded. The ...

Parkinson’s disease lacks a cure but certain medicines can help manage the symptoms. These medications function to offer a substitute for dopamine, the signaling neurotransmitter in the brain. Carbidopa-levodopa is hitherto the most effective medicine to manage Parkinson’s disease. This chemical moves to the brain and is converted to dopamine. The chemical levodopa is mixed with carbidopa preventing it from being converted to dopamine prematurely out of the brain hence potential side effects such as nausea are lessened. Potential side effects with this medication however include orthostatic hypotension or feeling light headed and nausea. With continued use ...

Abstract

The study of tiny particles and their applications have emerged as an important area of research in recent years. In particular, magnetic nanoparticles have attracted considerable attention due to their unique properties that make the particles useful in numerous applications. Accordingly, the present review investigates the synthesis, characterization, and biomedical applications of magnetic nanoparticles. The introduction section examines recent advances in nanotechnology and explains the significance of magnetic nanoparticles in scientific research. The section on results and discussion presents the findings of various researchers with a focus on the magnetic properties, synthesis, characterization, and biomedical applications of magnetic nanoparticles. ...

Abstract

The separation processes in industry are a common practice especially in the developed countries as well as in the developing world. As a result, it is a good step to improve the separation techniques to ensure a better process for the production of the finished commodities. The classification of the distillation columns and the packed bed columns together with an analysis of their ability to perform efficiently in the industry is vital. Therefore, the paper entails an analysis of each group of distillation columns, taking into account their ability to carry out their duties, as well as the reason ...

Nowadays, as the world continues to embark in the transitioning from the industrial era to the information era, more and more fields of practice and study have emerged to address the different needs of the society. One of the fields that has definitely established its importance in society, is the field of Engineering. Upon hearing the word “Engineering”, it cannot be denied that one of the most common ideas and perceptions that come to mind, is that they are responsible for building things. However, it is important for people to recognize that Engineering is one unique field for it ...

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 ...

Introduction

Carbon Capture and Sequestration (CCS) is a group of technologies that received recognition in 21 century. CCS process consists of collection and concentration of CO2 emitted from combustion of fossil fuels with further transportation to special storage locations. The reason for storing carbon dioxide away is related Greenhouse effect and its influence on global warming process. The main goal of carbon capture technologies is to stabilize the levels of greenhouse gas in the atmosphere. It is expected that implementation of CCS technologies will make it possible to reduce the total emission of CO2 up to 54% (to 450 ppmv). ( ...

Article Review: HazMat Emergencies: Decontamination and Victim Chain of Survival

Article Review: HazMat Emergencies: Decontamination and Victim Chain of Survival

Introduction

The article ‘HazMat Emergencies: Decontamination and Victim Chain of Survival’ by Gunderson et al. (2014) considers some hypothetical workplace emergency decontamination scenarios that entail hazardous materials. The HazMat emergencies are representative of a considerable range of response challenges, especially those involving employees’ exposure and the response involving victim(s). This script gives a review of the article pointing out the chief elements therein and the writer’s opinion.

Summary of the main points

The HazMat emergency refers to a collection offering important responses whenever employees suffer exposure to hazardous risks and accidents. They are ...

Question #1

Hazards posed when one interacts with hazardous materials available at the refinery and related facilities, including the by-products, incident fire and release of acidic gas. Crude oil consists of petroleum hydrocarbons. When the products are discharged into the environment through leakage, spillage, or combustion; physical, chemical as well as biological activities occur. The aliphatic compounds in crude oil react with oxidizing compounds like nitric acid, oxygen or heat; they burn to generate carbon II Oxide and water. Sulfur in crude oil burns in air to produce sulfur dioxide. At about 400 – 500 ppm, exposure to sulfur oxide is considered ...

Introduction

The cost of manufacturing ammonia using the Haber process plant constitutes the following components: the cost of energy, raw materials, equipment, labor and sparking substances (catalysts). Energy (gas or electricity) costs are incurred to maintain the temperature of the reaction. The Harber process is operated at very high temperatures, and pressures thus higher costs of energy are incurred. Some of the raw materials consumed in the Haber process such as nitrogen and hydrogen are recovered at the end of the process. The recovered materials are recycled back to the system to reduce the cost of raw materials. Starting and ...

Abstract

The field of Nanoscience has evolved due to the other advancements in the other fields of study such as the Nanotechnology. While the latter is a subset of the former, there is credible evidence that points to the fact that Nanotechnology has been developed thanks to various areas such as biology, material science, engineering physics, chemistry and much more. It is the foundation on which the Magnetic Nanoparticles have been embedded. MNP is nanoparticle that has the magnetic manipulation ability. Thus, this paper focuses on the study of the Magnetic Nanoparticles especially how they are formed or synthesized and ...

Introduction p. 3

Significance p. 4 Trend Drivers and Patterns p. 5 Impact on the Hospitality Industry p. 7 Subway: A Case Study p. 7 Impact on Future Professional Development p. 9 Conclusion p. 10 References p. 11 Chemicals in the food chain and the relevance to the hospitality industry. 1.0 Introduction: In the past, the process of a food chain was simple; foods were eaten as they were produces due to lack of preservation techniques. While it was considered to be important, food was categorized as just a commodity (Gauther, 2012). As industrialization increased, farmers became more distant from consumers and ...

Abstract

Application of the nanofiltration (NF) and ultrafiltration (UF) processes is applied in the handling of water that is produced raw. The application has been investigated in the current day through various studies (Wang 14). The experiment of the processes of both nanofiltration and ultrafiltration is conducted in the laboratory unit which is operated in a pattern of cross flow (Ashaghi, Ebrahimi, & Czermak, 46). The study that was conducted in Oilfield of North Sea using the process of membranes of ultrafiltration (UF) and microfiltration (MF) indicated that the content of hydrocarbon decreased from 50 mg/l to 2 mg/l which recorded ...

INTRODUCTION

Economical and industrial development are two of the most important elements on the evolutional way for any country and nationality. However, it often happens so that people discover something new and hurl themselves into using it before making throughout estimations of potential risks and hazards. This is especially common if such newly discovered entity (an invention, or mineral, or a way to dig out minerals – this could be anything) is capable of making large sums of money: then there is no particular doubt of this entity becoming incredibly popular and exploited to the extent of being overused. To top ...

Abstract

The positive impact that gender equality and diversity produce on companies’ financial performance and success has already been proven. However, these aspects are still the acute problems in business. The process of fostering a diverse workforce implies accepting and supporting differences in the population and promoting a supporting working environment for every individual, regardless of race, religion, sexuality, gender, age, etc. In addition, it is particularly important to understand and meet the demands of the diverse customers, and diversity in the workforce is the answer. Moreover, companies should introduce mentoring and coaching programs to regulate gender equality issues and ...

A porous item is a surface that contains openings that allow for the absorption of liquids to go through the material. One of the typical examples of porous materials is raw wood as it can absorb liquids or fingerprints oils especially if it is not varnished. Chemical development can be done through fingerprint processing of natural wood that is from a physical developer. Fingerprints can be developed through chemical processes of a silver based reagents that prints are produced, and they become gray colored (Trozzi 2001). In a crime scene, you can get wood outdoors, and this can also ...

Abstract

Sustainability in the early education in childhood is a necessary part of the curriculum which should be part of the service setting. Creation of natural environments and offering natural materials in a single way to ensure sustainability takes place. Sustainability can be termed as the “environment education,” is a method of learning about the environment and the way the natural system operates (Hessle, 2014). It is all that is required for the wellbeing and survival of the people which relates directly to the natural environment. Sustainable education for the children would be various practices such as encouraging the children ...

Introduction

Environmental concerns have created significant interests from various stakeholders with criminologists playing a critical role in responding to environmental harms. Environmental criminology applies to wide range of environments comprising of air, water, and land, and major issues such as overexploitation of natural resources and the emission of high volumes of toxic wastes in air, water, and soil. Multidisciplinary approaches have been adopted to help in curbing such environmental crimes whereby ecological, legal, economic, and social implications of the crimes have been analyzed by various stakeholders. Interventions have also led to extensive methods including monitoring, assessing the damage, enforcing legal ...

Introduction

The Bayer AG is a German multinational chemical company that deals in pharmaceutical and was founded in 1863 by Barmen. As a chemical and pharmaceutical company, Bayer AG was the first company to produce aspirin in large quantities at a time when it was considered the best cure in the world. From this point, Bayer AG has strategically placed itself from this time to control the cosmetics and pharmaceutical market in the UK and other reading partners that interact with the UK. In terms of business, Bayer AG has invested in doing research and coming up with new products ...

Abstract

The concentration of carbon dioxide has been abnormally increasing over the years. In the year 2016, its concentration exceeded the limitations, and has been considered as a dangerous situation. As a response to the increasing carbon dioxide content in the Earth’s atmosphere, different processes are being suggested in order to lower the concentration. Carbon Capture and Storage, or CCS, is one of these processes. Generally, there are three different phases of this process: the pre-combustion, the oxyfuel, and the post-combustion. These three phases have different processes in which the carbon dioxide content is being separated from the other ...

Status of the document.

This document is a project proposal for the development of starch-based hemostatic products. Acknowledgement. Much thanks to the project supervisor who offered guidance in every step of the development of this proposal. Developing starch based hemostatic products Project summary. Purpose: This proposal is envisioned to develop a hemostatic agent from purified plant starch. In this case, the product of the reaction should be developed by the formation of microporous hemosphere particles after etherification, esterification and crosslinking of glucose molecules to form ethyl propanetriol (glycerol-ether links (1-3 deoxy propanol)). The second intention of this study is to investigate the properties ...

Introduction

Climate change is a major environmental problem, causing concern to various corners of our ecosystem. It is a result of global warming, environmental pollution and inefficient use of our natural resources. Climate change has affected almost all living organisms, including plants, animals, microorganisms and undoubtedly, man. It poses a serious threat to our ecosystem and is listed as a major concern in the Grand Challenges of the U.N. for Millennium Development and Millennium Ecosystem Assessment (Garrett 490). A wide variety of its implications, have made climate change, an important topic for researchers. There has been more awareness among researchers ...

Introduction

Sickle Cell Anemia or Sickle Cell Disease is an inherited blood ailment. Those suffering from Sickle Cell Disease have abnormal S/ sickle hemoglobin in the red blood cells. Hemoglobin is the protein in the blood that aids in carrying oxygen throughout the body. The ailment takes its appellation from the shape of the red blood cells of a person affected by Sickle Cell Disease, which have the shape of a sickle. They are stiff and adhesive rather than a disk like normal cells. The misshapen cells tend to get trapped in the small blood vessels hindering the movement of ...

Abstract

The document considers the use and conservation of energy in domestic dwellings using heating systems, specifically water heated boilers, which is the cheapest solution in the market for home heating systems in Ireland and Europe. The document starts with a literature review of the available home heating systems and focuses on boilers due to its availability and price. The literature review includes a standard boiler array for a typical house, the radiators materials, and key concepts to understand the use of boilers for heat generation in homes. Later, it is necessary the calculation of heat transference for a given ...

Introduction:

Nanobiotechnology serves as an imperative technique in the development of clean, nontoxic, and eco-friendly procedures for the synthesis and congregation of metal NPs having the intrinsic ability to reduce metals by specific metabolic pathways. Silver nanoparticles are particularly interesting nanoscale systems due to the ease with which they can be synthesised and modified chemically. Synthesis of silver nanoparticles has been widely researched due to their interesting size and shape-dependent properties [26]. These novel properties can be tailored by controlling their size, shape, composition, structure and crystallinity. Due to their size features and advantages over available anti-microbial properties, chemical imaging ...

Introduction

Spectrophotometry is one of the most common and efficient means of chemical analysis currently used in estimating the concentration of some chemicals. The technique exploits the radiation absorption property of various chemical substances in determining their concentrations. Spectrophotometry is based on Beer-Lambert Law. Beer-Lambert Law is the linear relationship between the absorbance and concentration of an absorbing species (Nair, 2010; Burrows et al., 2013). The mathematical expression of Beer-Lambert Law is shown in equation1 below: A=aλ*b*c Equation 1 In the equation 1 shown above, A represents the measured absorbance, a is the absorptivity coefficient which depends on ...

Analysis of GMOs Effects on Human Health

Introduction The study of genetically modified organisms has grown to be a topic of concern in the contemporary world. In particular, there exist regulatory procedures that guide the process of approval of the genetically modified crops and foodstuffs (DeFrancesco 796). The only technique that enables the assessment of such issues is the introduction of the mechanisms like the toxicological tests, for example, in mammals, through the performance of such a process over longer time intervals incorporating detailed blood as well as organ system analysis (Séralini et al. 1). However, it has been challenging to carry out such initiatives ...

Part A

Process, SEQ Water (2016) The flash tank: The water from the river flows to the flash mixer where it is mixed with caustic soda and alum chemicals. The rate of chemical used depends on some sediments and wastes contained in the water. Flocculation chamber: In the flocculation chamber, smaller chemical particles undergo a gentle mixing process allowing them to mix and form large particles known as floccules made up of clay and silt. Floccules enter the sedimentation tank and settle at the bottom of the tank where they are separated and pumped out of the sedimentation tank through a ...

The critical importance of protein in nutrition and life of the human body was discovered by chemists in the early 19th century, they also came up with "international" name for these chemical compounds - "proteins", from the Greek protos - "first, chief". Proteins have the incomparable value in the human diet: first of all, they serve as "building blocks" for the whole body. In addition, they are responsible for the metabolic and regulatory functions in the body; serve as a basis for the creation of tissues, such as muscle fibers; perform transport functions in metabolic systems of the body, ...

Mostly commonly in today’s society the word ‘drug’ is commonly associated with any substance that is harmful to the human body. However, there are major definitions that certain individuals have developed to clarify what entails something to be a drug. According to Kramer (2012), a drug can be defined as any substance that has the ability to change how an individual feels or behaves based on the chemical properties that constitute that substance. That implies that the drug has the ability to affect an individual positively or negatively. Drugs have the ability to enter the bloodstream and cause ...

A cigarette is a small roll of tiny grounded tobacco leaves rolled in a thin piece of paper for the purpose of smoking. Tobacco as the main ingredient in a cigarette is combined with additional flavors and chemicals which keep the cigarette burning. There exist over 4000 different chemicals in a cigarette most of which have the potential to cause health problems in human beings as researched. This challenge, however, has never prevented smokers from withdrawing, and statistic still shows a significant increase in the number of smokers all over the world annually (Coffa et al. 64-73). Philip Morris ...

Introduction

The population growth of the cities in the world requires the perform of infrastructure works every day to guarantee the supply of clean and potable water to a population that needs every day more water for food, leisure, and living. But the supply water to human conglomerates has resulted in the removal of most of it, once it has been used and therefore contaminated. The previous requires that the civil engineer took into account some elements that allow them through studies and specialized satisfy effective and sustainable manner the need to have water service, providing it uninterruptedly, in quantity ...

Introduction

It is a sad fact is that rape remains a common crime all over the world, and different countries have different punishments for convicted rapists. Chemical castration is a process where drugs are used for reducing sexual activity and libido of the convicts. Among all the options that are present in the judicial systems, probably the most logical solution is chemical castration. Chemical castration is a process where drugs are used for reducing sexual activity and libido of the convicts (Park). Even though some people might claim that chemical castration seems too harsh a punishment, but it is only ...

Diseases and disorders occur due to many reasons such as bacterial or viral infections, can genetically be inherited or they can be linked to nutritional deficiencies. One such disease linked with nutritional deprivation is termed as Rickets or Osteomalacia. It is an illness which has been around for many centuries and mainly affects children. However, the prevention of rickets has been made possible with research and discovering the factors which can help improve bodily health. Yet, the disease is a commonly recurring one in developing countries where infants and young children are exposed to a nutritional deficiency of Vitamin ...

Cadmium has a broad range of industrial applications in the modern world. Some of the uses include the following: manufacture of batteries, stabilizer for plastics, electroplating, and in the production of pigments. Cadmium exhibits several health effects. Some of the short-term health effects associated with the exposure to cadmium include the following: pulmonary and bronchial irritation and the impairment of the lung functions. On the other hand, the long-term health effects include the build-up of cadmium in the kidney that eventually causes kidney disease, impairment of the liver and the immune system, and effects of the lung such as ...

Abstract

A sandstorm is characterized as one that whips up extraordinary loads of sand into the air, forming a dense cloud above the ground in the process. While most of the sand will rise higher than 50 cm, some sand particles can even ascend to the height of 2 meters. According to Wikipedia, the average diameter of the particles carried by such dust storm winds will vary between 0.15 and 0.30 mm. Wind speeds such during sandstorms have been recorded at up to 16 km per hour and more, while most storms continue to blow for between three hours to ...

Introduction

The “Scientific Method” characterizes science from other fields of studies. It encompasses methodologies of scientific inquiry that follow certain patterns to easily obtain and make experimentation easier. The scientific method is improved as science and technology progress but it has the following general parts that are universal: a. identifying the problem statement, b. formulation of hypotheses, c. observation from sampling, measurement and description of the data obtained, d. formulation of inductions, e., employing theories and finally, f. formation of conclusion (Oxford University Press). These steps are greatly relevant to obtain the desired data for an experiment and with the ...

Introduction

The Scientific method is a framework followed by scientist in investigating a certain inquiry or process. Scientific method is a series of steps that was established during 1619 by Rene Descartes. This then led to the improvement of the principle so as being used until the recent times as a principle that guides every scientific fields (McLelland, n.d.). With scientific method, biases from personal prerogatives and the influence of environmental and social concerns are eradicated. The scientific method employs the utilization of testing procedures to verify claims that can be reproduced to strengthen the credibility. Scientific method is a ...

Overview

Polyvinylidene fluoride is one of the polymers that are used as membrane material. This is because of its outstanding properties. Besides its comparatively high amount of fluorine, the polymer also has a high level of crystallinity. The result of these properties are exhibited in the performance of the Polyvinylidene fluoride polymer. For instance, the chemical stability of Polyvinylidene fluoride in chlorinated solvents and environments that are highly caustic and acidic is very high. Another property of the polymer is its hydrophobicity. This means that it is not compatible with water. This would create challenges if the polymer were to ...

Click Chemistry describes the biocompatible reactions that are high yielding, that are very simple to perform, have wide scope, that need no chromatography to remove their byproducts and that can be conducted in easily removable solvents. The synthesis of first triazole was reported by Arthur Michael in 1893. In the 20th century, Huisgen discovered the catalyst of copper, 1,3-dipolar cycloaddition which required the temperature of 100 degree Celsius. This reaction of copper is a highly versatile reaction which does not require any specific reaction conditions and can easily be performed with various solvents, wide temperature range and pH, ...

Abstract

In the field of medicine, histopathology process is undertaken by pathologist.The aim of undertaking histopathology is to examine the existence or the possibility of a disease in the body tissue of a living thing. In addition, the process of histopathology is best practiced on the specimen of body tissue taken during the surgery of a patient. Here, the process involves a series of activities where surgery helps to remove body tissues for examination. After the surgery, the body tissue removed is placed in a fixative place where no external toxicities can contaminate the specimen. This forms the basis for ...

Cancer is one of the most common causes of death worldwide. Every year, various types of cancer kill millions of people. The problem of cancer disease is unique because of its complexity and importance to humankind. Cancers affect all segments of the population, causing enormous damage to society. Although malignant tumors are extremely diverse and complex for the perception, the risk factors and mechanisms of development of cancer are well known enough so that it becomes possible not only to heal, but also to engage in cancer prevention. Cancer is the most difficult and dangerous disease, since it can ...

One of the grand challenges being faced by many people in the world today is access to clean water. The shortage of clean drinking water is, for sure a huge issue, however, with advances in technology and better affordability of this technology, this crisis can be averted. As far as a background know how of the situation is concerned, there is an abundance of water in countries such as Canada or the States, where it provides in excess for the amount of people inhabiting the countries. On the other hand, there are the Middle Eastern and North African countries, ...

ENGINE MANAGEMENT SYSTEM

Introduction This study evaluates the operating principles of vehicle fuel systems, vehicle ignition systems and pressure charging of engines. The report attempts to evaluate the operating features of actuators and sensors used in the ignition systems and engine management system of vehicles. It also analyzes the types of pressure charging systems, its shortfalls and how it affects the enhanced power of the engine. The secondary sources which form the bulk of this report are primarily research from various sources. The paragraphs below look into the sensors and actuators and the pressure charging systems.

Sensors and Actuators

Types of Sensors and function The ...

Introduction

First, they suspected the food prepared for the birthday party to be the cause of the outbreak. It turned out that it was a waterborne disease, a norovirus. Waterborne disease can easily affect children who come in contact with the contaminated water. The swim club manager seemed not very much cooperative during the initial outbreak; but the VHD investigators needed the cooperation of the swim club manager in identifying the real cause of the outbreak. Later, the manager told them that other persons not invited to the February 1 birthday party (members of an infant-mother swim class) got sick ...

Bacteria refer to the regnum of prokaryotes (Sundararaj, Mudaliar, Anthoniraj, Kannan, Muthukaruppan). For the current moment, it accounts for more than ten thousand kinds of bacteria. The bacterium is recognized as one of the most ancient of living organisms, arising about 3.9 – 3.5 billion years ago. Bacteria have the substantial variation in the ways of metamorphic and energetic metabolism. Thus, autotrophs can synthesize all necessary organic molecules from non-organic compounds, whereas heterotrophs demand active organic compounds to transform them. The biggest degree of heterotrophs belongs to intracellular parasites. They are called saprophytes (Sundararaj, Mudaliar, Anthoniraj, Kannan, Muthukaruppan) and can ...

Issues addressed by the authors and their relation to the value of customer relations

Porter and Kramer (2011), in their article Creating shared value, pointed out that the assumed trade-off between economic efficiency and social progress may not be real. The authors describe some initiatives from companies and Non-Governmental Organizations (NGOs) that bridge the apparent gap between business competitiveness and social advancement, as they define the concept of ‘Shared Value.’ One of the most striking suggestions of the authors is that companies miss business opportunities as they fail to fully consider the most critical customer needs. A clearer example could not be offered as Porter and Kramer (2011) mention food companies focusing on ...

It is a fact that people want to have the perfect smile, one like the stars of Hollywood have. And it is not unusual to desire having the perfect teeth because they add to a person’s physical beauty, and they also enhance one’s confidence while they communicate, smile or take a picture. Therefore, if a person does not have the perfect teeth, has cavities or needs help in enhancing their beauty, then dental technology can immensely help them. Dental technology is not a new phenomenon; rather it has been present since over one hundred and fifty years, ...

Everyone loves the food at the dining table to be appealing to their senses besides their taste buds through attractive colors and flavors. For instance, one cannot imagine a loaf of bread without its trademark golden brown crust. How do foods get their unique color and aroma? A series of reactions known as Maillard reactions produce countless chemical compounds that give foods like bread, chocolates, potato chips and roasted meat their unique colors (Copeland, 2016). These reactions take place at high temperatures of around 130℃ when raw food items are baked, roasted or fried. This explains why boiled, steam-cooked ...

Abstract

Depression is a kind of mental disorder that can affect people’s feelings and everyday activities. It needs medical and psychological care, otherwise, it can cause such a fatal result as a suicide. Depression has its own symptoms and types that depend on different circumstances. Contemporary medical science has different methods of cure for depression that help people to overcome and even prevent it. Depression has been known from the ancient times and was considered as the demonic possession. Priests were the people responsible for it and they used exorcism as the method of the treatment. With the development ...