Essays on Concentrations

Abstract

The aim of the experiment is to plot the calibration curve for deteremination of antigen 4D5 by performing ELISA experiment. The primary antibody was blocked by bovine serum albumin, then it reacted with IgG (secondary antibody). Then, the system was washed with carbonate, blocking and substrate buffers. Three replicate experiments were performed, and the experiment was performed with the serial dilutions. By measuring the optical density of the diluted solutions, the calibration line was obtained and the region with the linear dependence “concentration – optical density” was determined. The callibaraion line can be used for the practical tasks: for detecting ...

It is a big debate as to whether global warming is natural or caused by debilitating human activities. With literature demonstrating both sets of opinions with strong arguments, boiling down to a conclusion seems a harder haul. Still, this paper explores the reasons to highlight that global warming does have a natural cause, but it's too small compared to anthropogenic activities. Clearly, the world has witnessed rapid warming in the last decade, and a fleet of surface instruments and satellites have recorded a host of signs that pinpoint catastrophic actions by humans. The clear outcome of these activities in ...

Aims and Objectives of the Experiment

The main objective of this experiment is to determine the concentration of different substances. This is achieved by determining the end point(s) of different titrations using the automated potentiometric titrator. These points are known as equivalence points. The units of measurement are the standard units used in titrations i.e. Molarity (moles/liter) of substances used while the quantities of these substances are measured in mL (milliliter).

Theory and Principles

Potentiometric titration is a volumetric method which measures the potential between two electrodes, namely reference and indicator, with the change in the volume of the reagent that is added, known as the titrant. ...

Research Question

The effect of increasing the concentration of two reactants, i.e. Calcium Chloride solution and Sodium Carbonate solution, on the percentage yield of Calcium Carbonate is to be studied in this experiment. The efficiency analysis for the production of Calcium Carbonate (also known as chalk) is to be carried out. The dependent variable in this experiment is the percentage yield of Calcium Carbonate, expressed as percentage (%). The independent variable is the concentration of the reactants, i.e. Calcium Chloride solution and Sodium Carbonate solution. The concentrations are expressed in moles/liter or moles/dm3. While the control variable is the mass of the ...

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 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 ...

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 ...

Abstract

In the last century, the knowledge of molecular biology has increased, opening new opportunities for addressing different diseases that have been affecting all populations. Before, genome and proteomic studies were seen as complicated field due to inability to get significance understanding of disease components at the molecular level. However, with the expansion of molecular biology, different techniques and tools have been developed to aid diagnosis and treatment of diseases. In this study, these tools have been investigated to understand how the knowledge on molecular diagnosis helps in detection and treatment of diseases. This study focused on the application of ...

Application– Chronic Kidney Disease

(Author, Department, University,

Chronic Kidney Disease Chronic kidney disease is related to a decrease in kidney function or damage to the kidney function for a minimum of 3 months. Actually, it is an ongoing process in which nephrons’ functioning decrease, glomeruli are destroyed, and glomerular stress is increased as a result of more work by surviving glomeruli to increase glomerular filtration rate (GFR); thereby, resulting in predictable steady decline of the function of kidneys (Buttaro, 2013). Chronic kidney disease is usually difficult to detect or grasp, and symptoms may not appear with a GFR more than 35%. However, when ...

<Instructor>

Groundwater contamination by toxic metals and organic compounds is a serious environmental and public health problem (Crini 39). Many of the common contaminants in wastewater are known to be toxic or carcinogenic. Common groundwater contaminants include heavy metal ions, aromatic compounds, and dyes. Additionally, heavy metals are not biodegradable and tend to bioaccumulate, leading to various diseases and disorders. Mercury and cadmium are among the most toxic metals and are very damaging to the environment. Additionally, chromium (VI) is a wide-spectrum toxin, as it is toxic to bacteria, plants, animals, and humans. Organic compounds in groundwater are ...

Gold Nanoparticles Article Summaries.

Original Article Summary: Turkevich, Stevenson, & Hillier, 1951. In their 1951 article, Turkevich, Stevenson, and Hillier explore the nucleation processes and growth of colloidal gold nanoparticles during synthesis under different methods. The paper explores the standard preparation methods of colloidal gold which all use a nucleating agent which usually comprises reducing agents that later form a mixed polymer with a chloroauric ion before reduction to the nucleus occurs. The authors of this paper explore gold colloids synthesis methods such as Bredig’s electrical arc synthesis, the Faraday method, and reduction methods using acetone, tannin gold solution, oxalic acid, Hydroxylamine hydrochloride, ...

BOP Assignment

A firm’s internal and external environment affects its performance in the market. It is worth noting that there are several tools of analysis used to determine the manner in which a given organization performs in its environment. Business operations take place within an environment. The environment factors are classified into internal and external factors depending on the type and ability of the firm to control. In this case, BHS is an example of an enterprise that was bought by an investor and merged into his wider business. After a while, it was on the verge of collapse, and ...

Drugs can have many differing affects on people, whether their consumption leads to a positive or adverse response. All of this depends on the levels of enzymes in the body and how the variations of expression lead to these possible outcomes. The major theme of the two sources on this topic relate to the specific enzyme, CYP3A. CYP3A is a subfamily of cytochrome P450 enzymes, which serve to catalyze the addition of oxygen into molecules. Their ultimate role serves two spectrums: to convert foreign substances into less toxic products that can be eliminated from the body, or to convert ...

Overview

The significant outcome related to the over prescription of antibiotics by the physicians attributes to the pattern of antimicrobial resistance that develops inside the patients who consume extra doses or combination of antibiotics for treating their sore throat manifestation . The antibiotics resistance across the patient population is effectively determined by the measurement of their minimum inhibitory concentrations (MIC) through laboratory analysis . The configuration of dilution solution of antibiotics stock and interpretation of the MIC findings through the analysis of bacterial growth over agar plates provides an insight regarding the MIC of antibiotics and the corresponding resistance of the developed ...

Introduction

The large production of bisphenol A (BPA) in the world has been documented because of the increased usage of the same in various industries. The most critical industries that have been using this BPA include those manufacturing containers for foods and beverages, cigarette filters, thermal receipts as well as paper currency. With such a huge provision, it is critical that the basis of such developments only emanates from making the right choices over its uses because its production to a total of 2.7 million tons could be disastrous to the body. The main reasoning here is that the chemical ...

Abstract 3

Carbon Monoxide (CO) Properties and Uses 4

Sources of CO Emission and Toxicokinetics 4

Exposure Limits for CO, Sampling and Analysis 6 Protocols for Industrial CO Sampling and Analysis 6 Carbon Monoxide in Substance Priority List (SPL) 7 CO Contaminated Superfund Site 8 Carbon Monoxide Explosion Case Study with Recommendations 8 References 10 Abstract Carbon Monoxide (CO) is a colorless, odorless gas, which results from incomplete combustion of carbon containing fuels, and has several applications such as effective reducing agent and manufacture of various hydrocarbons. CO is a major indoor air pollutant, and is released when combustion is carried out in confined spaces such as mines ...

1.Diaphoresis is a medical condition of the body that an individual often sweats because of a drug side effect or symptom of a disease. Motor dysfunction has associations with the nerve and muscle center responsible for movement; this term defines the improper functioning of the muscle. Cyanosis is a condition related to the low supply of oxygen in the blood where the skin color of an individual as well as mucous membranes appears to have purple or blue coloration. The peripheral nerve connects the central nervous system and the brain to the entire body neurons; any damage or pressure ...

Vid30 complex participation in the degradation of CDC25 in yeast and their role in Ras/ cAMP/ PKA pathway

Background: Unicellular organisms such as Saccharomyces cerevisiae in its total life cycle is exposed to diverse and changing nutrient conditions. Thus, in order to survive and achieve a competitive advantage, it has adapted itself such that it not only uses the wide range of available nutrient sources but also the sources that are nutrient rich. It mainly uses fructose and glucose by rapidly fermenting to alcohol. In response to these nutrient conditions, the intracellular trafficking transcription and turnover of protein from nutrient transporters (e.g. Hxts) get regulated. Therefore, when the availability of the glucose increases, the expression of low- ...

Summaries

Goel, Reema et al. 2015. Highly Reactive Free Radicals in Electronic Cigarette Aerosols. Chemical Research in Toxicology 28:9 (1675-1677). In this reported scientific study, a group of researchers from the Pennsylvania State University investigated whether the aerosol produced by an e-cigarette contains reactive, short-lived free radicals. Initially, the researchers proposed that the e-cigarette vapor may contain high concentrations of free radicals, presumably from the presence of high concentrations of free radicals from conventional cigarette smoke. It must be pointed out that reactive, short-lived free radicals, such as reactive oxygen species and reactive nitrogen species, are potentially toxic to organisms, ...

Abstract

Pinto bean is a popular plant in the United States and Mexico, so knowing how it grows is an important topic in the field of botany. One of the factors that influence plant growth is the soil condition in which the seeds are planted on. Based from the many studies conducted on pinto bean, as well as soil condition and plant growth, the amount of water in the soil is an important factor in the quality and production rate of the plant. Lack of water can negatively impact the growth of pinto bean, but some varieties of the plant ...

Abstract

The research is dedicated to studies of activated carbons performance in the wastewater treatment process of dye removal. The experiment was performed to assess the efficiency of the commercial activated carbons (F100, F600, F820, SGL 8×30, CAL, AP4-60, OLC12×30) in adsorption process for Dylon Burlesque Red removal. The effect of pH, type of activated carbon, dye, contact time, and salinity was studied. The experiments were performed by measuring the absorbances of the solutions before and after contact with the activated carbon. The absorbance was evaluated with UV-vis spectrometry. The adsorption of the dye took place on all ...

Chapter 1

Introduction

XX century was characterized with the significant technological progress, which has improved the life of people. Numerous products and services became available, labor and domestic life became easier and more comfortable. However, waste problem is the other side of the technological progress. The solid, liquid and gas waste are formed, and thus land, natural water and air quality degrade. Therefore, in XXI century the research efforts are dedicated to development of methods for sustainable use of water, gas, and solid resources. Wastewater polluted with dye residuals originate from textile, leather and food industry. These industries produce goods that ...

XX century was characterized with the significant technological progress, which has improved the life of people. Numerous products and services became available, labor and domestic life became easier and more comfortable. However, waste problem is the other side of the technological progress. The solid, liquid and gas waste are formed, and thus land, natural water and air quality degrade. Therefore, in XXI century the research efforts are dedicated to development of methods for sustainable use of water, gas, and solid resources. Wastewater polluted with dye residuals originate from textile, leather and food industry. These industries produce goods that are ...

Should Junk Food Be Sold In Public Schools

Issue: Some public schools say that sugar and salt have no significant effect to our health, and keep selling junk food. Research institutes say that sugar and salt lead to higher chances of obesity and other health problems. Thesis: We will argue that public schools should stop selling junk food; the results will be serious health problems for students in these schools. If junk food keeps being sold in public schools (s), then serious health problems are bound to arise. (o). s → o

If serious health problems arise (o), then fewer children will come to school (m).

If junk food is still sold in public schools (s), then fewer children will come to ...

Introduction

Much recent publicity surrounding climate change has focused mostly on global warming, but little direct correlation has been given in the media with regard to the impacts that environmental pollution has on climate change, and also on human health. Although studies of pollution and the environment have been carried out since the time of the Industrial Revolution, it only relatively recently that attempts to measure environmental on a global scale have been undertaken. Environmental pollution is a major cause of global concern, not only for the effects that it has on the physical environments, but also for its potential ...

Abstract

This essay briefly describes the meanings of the first law and the second law of thermodynamics. Thermodynamics, as the name illustrates, is the field of science where the dynamics of quantities including but not limited to heat and temperature and their relationship with energy, work, entropy etc are dealt with. The first law of thermodynamics is a version of the principle of conservation of energy. It establishes a theoretical limit on how much work can be output when a certain amount of energy is available and vice versa. The second law of thermodynamics is a bit more subtle and ...

Abstract

Continuous exposure to a wide spectrum of natural light has constructive impacts to not only one’s health but also their moods. The production of hormones such as serotonin and melatonin based on the intensity of light has a large impact on the distribution of an individual’s emotions. This study seeks to validate the role of sunlight in the distribution of a person’s mood and whether a lack thereof has a negative impact on their emotional balance. The paper utilizes similar researches conducted on this issue to establish an argument about the constructive impacts of sunlight on ...

Introduction

In 2006, an apartment complex that included a playground was built on a piece of land that was the site of a metal processing plant that operated between 1930’s and 1950’s before going out of business. Due the above reason, the land had to be assessed for any carcinogenic heavy metals. There are so many potential heavy metals that could have hazardous effects on people’s health, but the assessment mainly focused on cadmium. This is because cadmium was the most common metal used in the plant while it was operational and the metal has both carcinogenic ...

Ivermectin

Abstract Ivermectin is a group of medicinal drugs under the larger group of avermectins. It was first discovered in the early 1970’s and accepted for use in the 1980’s in veterinary medicine applications and later for human conditions treatment. Biosynthesis of ivermectin is done from the primary compound avermectin and was discovered by a group of scientists who were led by Professor Satoshi Omura (Eng). The results of their research were later forwarded to the MSD research laboratories which isolated the compound avermectin from the sampled soil that was studied. Synthesis of avermectin results into eight main ...

Introduction

Quinine is a basic organic amine which is found in the bark of cinchona tree. It has a long history of relationship with humanity. The extracts from the bark containing quinine were used to treat malaria from the 17th century but as a pure chemical substance, it was isolated from the bark only in 1820 (Achan et al. 144). Its chemical formula is C20H24N2O2, according to IUPAC its systematic name is (R)-(6-Methoxyquinolin-4-yl)((2S,4S,8R)-8-vinylquinuclidin-2-yl)methanol. Its structure is shown in Fig. 1. Quinine is used for a variety of purposes. It is still used for ...

Smoking is one of the most harmful habits dangerous to the health of not only smokers but also others. Currently, smoking has become a massive "epidemic" common among men, women and even children. The fact that smoking is harmful to health know everyone, but not all realize the true extent of its impact. Damage to health damage is delayed in time and not immediate, but gradual, usually after 10-20 years after the onset of smoking. Therefore, many smokers at first do not notice changes in their health status and believe that nothing will happen to them in the future, ...

Introduction

Stainless steel is an important component in the modern industry having various uses in the industry. This has forced new developments in its manufacturing especially in terms of its composition. This can be the steel made from aluminum, manganese, and iron. All these materials makes the finished stainless steel product unique in terms of its composition, physical metallurgy, and other factors. This paper is going to discuss the development in stainless steel technology with regards to its composition in terms of the materials used. The materials that are going to be discusses are Al, Mn, and Fe. The paper ...

Assumptions in Molecular Weight Determination and their impact on MW determination

DSC measures the quantity of required heat necessary to melt a sample where the heat of fusion is calculated based on a percentage of crystallinity. Therefore, the methods used to measure crystallinity, weight determination such as DSC must be detailed to retrieve valuable results. However, in most of the molecular weight determination methods, there are certain assumptions undertaken but those assumptions also have a certain impact on results. In DSC profile, three types of distinct probabilities of uncertainty exist. The first is natural uncertainty that may be linked to equipment such as uncertainty of weight measurements of the sample. ...

The patient presented in this case suffers from metabolic syndrome. The metabolic syndrome is a cluster of health problems that is associated with the presence of obesity and tissues resistance to insulin. The metabolic syndrome is a condition that causes a myriad of problems in the body such that the body becomes incapable of maintaining the circulation of the useful energy molecules such as glucose and lipids in the right quantities in the bloodstream (Huang, 2009). Other associated disorders of metabolic syndrome include high blood pressure and dyslipidemia. The lipid problem is characterized by elevated levels of triglycerides and ...

Introduction

In 2014 Flint Michigan found itself captured in the national headlines after high levels of trihalomethanes (THMs) and lead concentrations were found in the water system. This was after a terrible decision was made by the Flint Michigan city council of switching the water supply from a Detroit plant treated water system to the local Flint River water supply. The decision was made because the city council officials believed that the new proposed water system would assist in saving a lot of money little did they know that they would cause a significant problem to the society. Soon after ...

07th of April 2016

Air pollution impacts the human health and the environment in various ways - by direct and immediate threat (smog, etc.) to the slow and gradual destruction of the body's various life-support systems. In many cases, air pollution negatively affects the structural components of the ecosystem to such an extent that the regulatory processes are not able to return to their original state and thus the homeostasis mechanism fails. The atmosphere is the air shell of the Earth. Air quality involves the totality of its properties, reflecting the level of exposure to physical, chemical and biological factors on humans, plant ...

Abstract

Handwashing is an important process in controlling microorganism transmission and infectious diseases. The purpose of this experiment was to determine the effectiveness of different antibacterial hand cleaners (soap, alcohol hand sanitizer and ethanol soaked wipes) on killing bacteria. Hands were sampled without cleaning with antibacterial hand cleaner (control), and after cleaning with antibacterial soap, alcohol sanitizer, and ethanol soaked wipes. Samples were taken with a sterile cotton swab and inoculated on agar plates. Each experiment was done three times. Colonies were counted, mean values and standard deviation were calculated, and data was reported. Alcohol and sanitizer and ethanol soaked ...

INTRODUTION

Catechol-O-methyl transferase (COMT) is an enzyme that plays a significant role in the metabolism of dopamine (DA) and amounts to approximately 60% or more of DA breakdown in the frontal cortex . The gene expressing the COMT enzyme could affect cognition and functioning of the brain via its action on dopaminergic function. A polymorphic variation occurs in the coding area of the COMT gene (a Guanine to Adenine replacement), changing the amino acid from valine (Val) to methionine (Met) at the codon position 158 (Val158Met) and consequently influencing the thermal tolerance and stability of the enzyme. Allelic discrepancies in enzyme ...

Introduction

Air pollution involves the introduction of particulates and other biological molecules in the atmosphere, resulting in the death of humans, other living things and damage to other resources such as crops. It involves the interaction of different pollutants which eventually affect the environment, health, and even the climate. These pollutants are emitted almost from all economic and social activities. The most cases of air pollutants are; Sulphur Dioxide, Nitrogen Oxides, Particulate Matter, Ozone, Ammonia, Non-methane volatile organic compounds, carbon dioxide, lead, heterocyclic, chlorinated hydrocarbons, phenol and Methane amongst others. Emission of many air pollutants has decreased across Europe as ...

Increasing concentrations of nitrogen in the environment, a phenomenon called as nitrogen saturation occurs when the inorganic nitrogen levels exceeds the demand by organisms and plants. Increased concentrations of nitrogen have detrimental impact on the air quality, owing to the oxidizing capacity of nitrogen oxides and their function in the formation of ozone layer . Excessive nitrogen deposition causes an increase in foliar nitrogen content, which subsequently leads to increase in tree growth . Other negative effects on the ecosystem are frost-hardiness in conifer trees in the presence of large doses of nitrogen. Excessive nitrogen concentrations may also lead to tree ...

The objective of this experiment was to get acquainted and study galvanic cells, Nernst equation, and electrochemical reactions and determine the experimental value for the Ecell vs. log Q for Cu/Zn cell. Galvanic cells are the systems which can produce electric current due to reactions occurring in them. In our common understanding these cells are the batteries. In these cells, the processes of electron transfer and corresponding chemical reactions occur due to the difference in tendency of different substances to gain electrons. The galvanic cell typically consists of two half-cells and a junction between them which is often a ...

Nursing:

Purpose The goal of this investigation was to ascertain whether there would be an increase or a decrease in global CO2 emission over the next 40 years and provide possible reasons for the same.

Introduction

Carbon dioxide (CO2) is one of the primary Greenhouses gasses (GHGs) alongside such gasses as Methane, Ozone (O3), Nitrous oxide, and Sulfur Dioxide (SO4) that are actively driving global warming and the planetary greenhouse effect. However, to understand the effects of GHGs it is paramount to comprehend the concept of the greenhouse effect. The light from the sun is not only used to light the ...

Introduction:

Occupational exposure to silica crystals has long been identified and recognized in most of the industries. There are various industries that involved the silica dusts, where some are highly exposed beyond the threshold limits for the substances. The problem with the occupational exposure of workers to silica crystals are often not taken seriously be employer and employee alike. Exposure to silica in the occupational environment results to health effects such as silicosis and other related diseases. People who are working with these crystals are prone to respiratory effects as well. There is a problem in the safety and health ...

Dr. 1

Define the term probiotic. (Make sure you include the three components of this definition and use your own words—DO NOT copy the statement from the slide).

Probiotic is a term used to define microorganisms that are believed to have health benefits to humans when consumed.

When did the NIH human microbiome project begin and what were its two major objectives? NIH human microbiome project began in the year 2005. Its two major objectives are to identify microbes present human body and identify their role in human health and disease

Which different mechanisms were suggested through which microbiota may contribute to colorectal cancer?

Microbiome can contribute to colorectal cancer by the production of toxic and genotoxic bacterial metabolites that can lead to mutations by binding specific cell surface receptors and affect ...

Magnesium is an essential nutrient

Magnesium is a mineral which is of great abundance in the human body. Along with enzymes, it is important for protein synthesis, muscle regulation and a host of other important cellular factors such as oxidative phosporylation, energy production which involves production and utilization of ATP and glycolysis. Additionally, Magnesium is required to assist in different cellular processes such as DNA replication and transcription and RNA translation(Barbagallo, 2012). Magnesium is found usually in the bones and or in the soft tissues of humans. Next to Potassium, it is the most abundant ion in the body. The plasma actually contains ...

In the case of López Ostra v. Spain (Council of Europe), Lopez lodged an application seeking protection of fundamental rights. Lopez had tried to engage the municipal authority in search of a solution to the nuisance and risks posed by the waste-treatment plant. However, the municipal authorities maintained a passive attitude. This prompted Lopez to seek the intervention of the court. In her application, Lopez complained that the industries operating within the vicinity of her residence were not only unlawfully interfering with her home but also her ability to enjoy peace of it. To her, this constituted a ...

Introduction

H2S or hydrogen sulfide is a gas that naturally occurs in hot springs, crude petroleum, and even natural gas. Hydrogen sulfide is also known as sewer gas, swamp gas, manure gas, or stink damp. This gas is usually produced by the breakdown of organic materials commonly found in wastes of human and animals by bacteria. Some of the activities that commonly result to the production of hydrogen sulfide gas include treatment of wastewater, drilling and even refining of petroleum or natural gas, and kraft paper mills (Occupational Safety and Health Administration). Aside from being a gas in form, hydrogen ...

The current growth of higher education has increased the concentrations of students in residential areas in urban centers (Smith, 2005). Most of higher learning institutions have open doors policy for both the local and international students that translate into the influx of students from different cultural backgrounds in residential areas. The firms owning residential buildings interpret studentification as a benefit to their business (Sage, Smith, & Hubbard, 2012). These companies usually inflate the rental charges to match the increased housing demand. The social cohesion in the residential communities has also been adversely affected by the growing number of students in ...

07th of April 2016

Air pollution impacts the human health and the environment in various ways - by direct and immediate threat (smog, etc.) to the slow and gradual destruction of the body's various life-support systems. In many cases, air pollution negatively affects the structural components of the ecosystem to such an extent that the regulatory processes are not able to return to their original state and thus the homeostasis mechanism fails. The atmosphere is the air shell of the Earth. Air quality involves the totality of its properties, reflecting the level of exposure to physical, chemical and biological factors on humans, plant ...

The debate on the negative effects of global warming on the weather has been gaining momentum over the past few decades. Many scientists firmly believe that global warming is transforming the world, and with time, it will cause significant disruptions to the ecological setup. Such fears inform the calls for a reduction in the greenhouse gas emissions, especially carbon dioxide, across the globe. However, many scientists have disputed these claims. They argue that carbon dioxide is not a pollutant. In fact, some scholars indicate that it does not have anything to do with global warming. Moreover, some scientists dispute ...

Introduction

The nationwide pipeline system in the USA has been constructed to transport the natural gas, oil, and refined petroleum products. This constitutes about 71% of the refined products and oils are being transported with about 100% natural gas of the consumption in the USA. The three sectors that are involved in the transportation of these energy products are; operators of the gas transmission pipelines, operators of hazardous liquids in the pipeline and the distributors of gas utilities. An approximate of 299,000 miles and 171,000 miles are offshore gas transmission and liquid onshore pipelines respectively. This operates in ...

People had become increasingly aware of the need to conserve and preserve the environment. The irresponsible dumping and mismanagement of wastes inevitably causes various kinds of pollution in the environment, especially air pollution. In fact, air pollution was recently identified as a global health concern and the leading environmental risk factor that allegedly causes the fourth leading cause of deaths worldwide . Due to the reported urgency in addressing alarming levels of air pollution, various studies have been published which scrutinized the causes and effects of air pollution. The current discourse hereby aims to expound on the three (3) major ...

Given the recent request to assist a local chemical manufacturer with OSHA compliance, one of the major issues to tackle will be whether the company is required to comply with OSHA Methylene Chloride standard. The company uses Methylene Chloride (MC) chemical to manufacture a special paint stripper for the Department of Defense (DOD). Methylene Chloride is a colorless, volatile solvent, with a chloroform-like odor. Exposure to this chemical increases the risk of developing cancer, and diseases of the liver, heart and CNS (central nervous system). Exposure occurs via inhalation, and direct contact and absorption through the skin. The immediate ...

The Effects of Climate Change on Allergies and Asthma Cases

Since the discovery of global warming or climate change, scientists have been warning the public of the possible implications this phenomenon could bring. They highlight erratic and severe weather patterns, changing ecosystems and the persistence of diseases that cannot easily be treated. While skeptics remain ignorant over these warnings and governments trying to make amends over their national policies, statistics show that these warnings should be taken seriously especially with regards to respiratory diseases such as asthma and allergies. However, it is a question as to what impacts climate change has towards the prevalence on allergies and asthma cases ...

Abstract

In the following case-study, Joshua is a newborn infant presented by his parents Samuel and Rachel to the pediatric outpatient unit of Robertsbridge, Sussex for screening and medical advice for sporadic vomiting at the time of breast feeding and seizure-like episodes. Samuel and Racheal also report sweet odor in the urine and loss of weight. Blood tests demonstrated increased concentrations of leucine and isoleucine. Genetic testing on the skin biopsies reveal mutation at Exon 6, c.659C>T of the of BCKDHA gene with a protein level p. A220V and Joshua exhibits about 1.5 % lesser than normal deficiency in the ...

Introduction

Air pollution involves the introduction of particulates and other biological molecules into the atmosphere thereby resulting in the death of humans, other living things and damage to other resources like crops. It involves the interaction of different pollutants which eventually affect the environment, health and even the climate. These pollutants are emitted almost from all economic and social activities. The most cases of air pollutants are; Sulphur Dioxide, Nitrogen Oxides, Particulate Matter, Ozone, Ammonia, Non-methane volatile organic compounds, carbon dioxide, lead, heterocyclic, chlorinated hydrocarbons, phenol and Methane amongst others. Emission of many air pollutants has decreased across Europe as ...

RESULTS

Section 1 All samples were found to be positive for the anti-Ro antibody with higher than 240 IU/ml, except Sample ID # 13 and 32, which showed lower concentrations (Figure 1.). These samples also exhibited occurrence of Smd and Dn respectively, albeit at low concentrations. Sample Id# 12 and 20 also showed presence of anti-La antibody. The autosera of Patient Id # 32 suffering from SS displays a faint 52kd IgM band, which is representative of 52kd anti-Ro antibody and is fainter in ethanol treatment sample. Patient ID # 42 expressing a higher than 240 IU/L of anti-Ro antibody in the clinical ...

Introduction:

Corrosion refers to the partial and gradual dissolution of materials used in water treatment and supply systems, pumps, pipes, tanks and valves. In most circumstances, almost all water is corrosive and this may lead to structural failure, water leaks, capacity losses and deterioration of the microbial and chemical water quality (WHO 2011). The pipes used in water distribution are made of different materials such as plastic, metals (galvanized steel, copper, lead and iron), and even concrete. Pipes made from concrete and plastic tend to be corrosion resistant. In piping systems, however, there are several water quality factors working singly ...