Chemistry Free Essay Examples And Topic Ideas

Neuroscience of Addictions – Brain Chemistry in Action

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Prescription stimulants belong to Schedule II drugs as per the Drug Enforcement Administration (DEA) classification. They are highly abused because they are easily accessible. This leads to the emergence of substance abuse disorder. Drug abuse denotes using prescription stimulants or any other drug for reasons other than the intended one. Non-medical use of prescription stimulants increases annually and now ranks second after marijuana among other illicit drugs. Sedative-hypnotics are drugs used to sustain sleep (Schmiedl et al., 2014). Additionally, they […]

Neuroscience and Brian Chemistry of Addictions

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Introduction Stimulants are either natural, refined or synthetic. They can be legal or illegal. Stimulants are drugs which can increase mental alertness, inflate physical energy, influences brain chemicals (cause excitement) and brings about euphoria. They stimulate the central nervous system. Some of the medicinal stimulants include amphetamines and methylphenidate, and they are mostly prescribed to both kids and adults diagnosed with attention-deficit hyperactivity disorder (ADHD). Sedative/hypnotic drugs are commonly called depressants. They slow down brain activity. Some of the sedative/hypnotic […]

What is Photosynthesis?

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Photosynthesis is the process that transforms organisms from light energy into chemical energy. In order for photosynthesis to take place, it needs these three things: Water, carbon dioxide, and sunlight. As humans, in order to live plants, must take in gases. Plants are known as ""autotrophs, which means organisms that can make their own food. The process of photosynthesis was created and developed Jan Ingenhousz, a British physician and scientist. Joseph Priestley was another scientist who contributed to the discovery […]

Effect of Exercise on the Rate of Respiration and the Heart Rate

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How does increase the number of jumping jacks affect the rate of respiration and the heart rate per minute in teenagers aged 17-18? Background Information: Different types of activity will have a different effect on the rate of respiration as well as the heart rate because of certain factors. These include the level of intensity and difficulty of the exercise, as well as determining whether it is an aerobic or anaerobic activity. Aerobic respiration requires the presence of oxygen. (Haldane, […]

Photosynthesis Vs. Cellular Respiration the Major Processess in a Global Balance

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There are two key processes that occur in nature to obtain energy, they are photosynthesis and cellular respiration. The derivative of the word photosynthesis is the process in which energy of sunlight is converted by plants to store chemical energy in carbohydrate bonds. Photosynthesis is known to be performed by plants, as is cellular respiration. Cellular respiration is organisms obtaining energy from a conversation that releases energy when oxygen is present. These two processes work together hand in hand as […]

Should Fracking be Allowed in the US?

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Should fracking be allowed in the US? Fracking is the process of injecting liquid at high pressure into subterranean rocks, boreholes, etc., so as to force open existing fissures and extract oil or gas. Fracking has many benefits to but it also has some environmental concerns as well. Fracking has a low chance of it going bad but the when it does go wrong it is a disaster. It affects many of its surroundings and has many chemicals that are […]

Characterization of Melba Beals

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Rosa Parks once proclaimed, I would like to be known as a person who is concerned about freedom and equality and justice and prosperity for all people. These same ideas could be spoken about Melba Pattillo Beals, a black girl who lived in Little Rock, Arkansas, an extremely segregated town. She was chosen as one of The Little Rock Nine to integrate Central High School and help the town evolve with freedom and equality. She eventually understands that this is […]

Development of Science in 17th and 18th Century

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Science is defined as intellectual and practical actives that involve systematic organization of knowledge obtained through observations and experiment. 17th and 18th centuries are periods where we see human being conducting thorough scientific research which has seen been tested and proven real. It is also through these sessions that technological changes were significantly observed ranging from Revolution of Ideas, a discovery of new machines, widespread of scientific knowledge through learning institutions, improvement in speed work and Institutionalization of well discussed […]

Process of Photosynthesis

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Presentation Photosynthesis, process by which green plants and certain different living beings utilize the vitality of light to change over carbon dioxide and water into the basic sugar glucose. In this manner, photosynthesis gives the fundamental vitality source to basically all life forms. A critical result of photosynthesis is oxygen, on which most living beings depend. Photosynthesis happens in green plants, ocean growth, green growth, and certain microscopic organisms. These living beings are veritable sugar plants, creating a huge number […]

Idea of Photosynthesis by Jan Ingenhousz

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To begin, the idea of photosynthesis was created by, according to Encyclopaedia Britannica, ""A Dutch scientist, Jan Ingenhousz. (Ingenhousz 1.) He was born in the Netherlands on December 8, 1730. Ingenhousz, is most known for his discovery of photosynthesis. According, to Encyclopedia Britannica, ""Ingenhousz discovered that light is necessary for photosynthesis, only the green parts of the plant perform photosynthesis, and all living parts of the plant can potentially damage the air."" (Ingenhousz 1.) Photosynthesis occurs in two steps inside […]

Air Pollution Scrubber

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Introduction Air pollution in urban areas has become an issue affecting human health to a degree unprecedented in human history. The World Health Organization (WHO) recently prioritized the reduction of air pollution, citing: An estimated 4.2 million premature deaths globally are linked to ambient air pollution, mainly from heart disease, stroke, chronic obstructive pulmonary disease, lung cancer, and acute respiratory infections in children. Worldwide ambient air pollution accounts for: 29% of all deaths and disease from lung cancer. (World Health […]

Green Synthesis of Silver Nanoparticles by Using Various Plants Leaves

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Abstract In the present experimental work, a rapid and simple method was applied for the synthesis of silver nanoparticles using different types of medicinal plants, viz. Sphagneticola trilobata, Catharanthus roseus, Azadirachta indica, and Dalbergia sissoo. The aqueous leaf extracts of these plants were used as both the reducing agent and the capping agent for silver nanoparticles synthesis. The green synthesis of silver nanoparticles (AgNPs) was characterized by UV-Visible spectroscopy. The UV-Visible spectrophotometer showed surface plasmon absorbance peaks in the range […]

Exploring the Intricacies of Genetics through DNA

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Introduction The hereditary molecule that is tasked with carrying genetic instructions that are used in all living things in development, growth, reproduction and functioning is referred to as deoxyribonucleic acid (DNA). DNA molecules consist of two strands which are bipolar and are mostly coiled near to one another to form a spiral. This strands are referred to as polynucleotides simply because they are made of small units known as nucleotides. The information of the DNA is stored in this nucleotides. […]

Photosynthesis and Energy

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Energy is very important and plays a substantial role in life itself, but where does energy come from, and how does energy work? Of course, the answer is simple: photosynthesis. With this reading, you will learn what photosynthesis is, how it works, the energy it creates, and how energy is stored and used. Finally, you will learn about different types of energy and the benefits those energy sources have. The process of photosynthesis begins when a plant receives carbon dioxide […]

The Unsustainability of Fracking

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Over the last ten years, America has experienced an energy revolution. Energy consumption has never been higher and the majority of this consumption is supplied by fossil fuels such as coal and oil or natural gas. In order to compensate the high energy demand, most conventional natural resources in the United States have been exhausted. Therefore, prices of natural gas and other fossil fuels are continuing to rise. In an attempt to increase oil and gas production and lower prices, […]

How to Relieve Global Warming by Carbon Dioxide Capture and Storage

Words: 1350 Pages: 5 4566

Introduction 'US President Donald Trump has cast doubt on a report by his own government warning of devastating effects from climate change.' (BBC News,26 November 2018) Several months ago, Donald Trump claims that the America exit 'Paris Agreement' because he think Global Warming is the lie of the scientists. Does he is true? The tables below show: 'On the Linearity of Local and Regional Temperature Changes from 1.5°C to 2°C of Global Warming.' Fig. 1. 30% rise in atmospheric CO2 […]

Environmental Heavy Metals on Diabetes Mellitus Type II

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ADVERSE HEALTH EFFECTS OF ENVIRONMENTAL HEAVY METALS ON DIABETES MELLITUS (TYPE II) AMONG TANNERY WORKERS IN VELLORE DISTRICT 1.0. INTRODUCTION Health is a vital aspect of life, determined by controlled lifestyle activities. These include cleanliness, appropriate nutrition, hygiene, and the overall environment. Disruptions in any of these factors can lead to ill-health. Independent or combined changes in lifestyle, genetic traits, heredity, and environment may result in a life-threatening disorder or metabolic syndrome called diabetes. Diabetes mellitus has undergone a notable […]

Characterization and Utilization of Bio-char

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1.1 Municipal Sewage Sludge (MSS) Sludge consists of various elements such as waste, organic and inorganic compounds, which are disposed into the atmosphere and are harmful to it. Sludge contains different pollutants and solid waste, including heavy metals, large organic solids, calcium, magnesium, metal sulphides, heavy metal organic complexes, precipitated soaps and detergents, biomass, and precipitated phosphates. Methods of sludge treatment involve stabilization and dewatering residue. Various types of unit processes and operations are used for the management of the […]

Long-Term Affects of Wastewater in Disposal Sites from Fracking

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Overview This article discusses a study done at Penn state into the long-term affects of wastewater in disposal sites from fracking. In 2011, water and sediment downstream of fracking disposal sites was discovered to still contain unsafe levels of some chemicals, despite the water being treated, and had become radioactive. This had contaminated drinking water and aquatic life in the river, causing die-off of some present species. Due to this discovery, fracking wastewater was no longer treated and released back […]

Characterization and Application of Protease Enzyme from Oceanobacillus Iheyensis KB7

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RESULTS Molecular identification of bacteria The 16S rRNA gene of the Oceanobacillus iheyensis strain was amplified using Polymerase Chain Reaction (PCR) with the help of 16S rRNA Universal primers. The 16S rRNA gene sequences were submitted to the BANK it and the ID number is (O. iheyensis _ MF192763). The Phylogenetic relationship was obtained using neighbor joining by pair wise comparison among the 16S rRNA gene sequence of selected isolate with species. The dendrogram was constructed for their Phylogenetic relationship […]

Characterization Testing and Applications of Composite Materials

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Composite materials, as the name indicates, is a combination of at least two different materials combined together in a unit that has various properties. Namely, if a composite material is made out of different materials, then each material will keep its specific and unique properties- and this is what makes composite materials versatile and applicable for various engineering projects. Composite materials can have their strength increased if they are additionally reinforced with particulates or fibers. Particulates reinforcement is not the […]

X-Ray Diffraction Characterization

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X-ray diffraction (X-RD) technique has been ever adapted to recognize structural properties of materials and to get information like crystal structure/phase, lattice parameters, crystallite size, orientation of single crystals, preferred orientation of polycrystals, defects, strains and so on. The technique has found to be employed to study the thin films, bulk and nanomaterials [50]. Principle of X-Ray Diffraction According to the Bragg’s law, diffraction occurs when light is scattered by a periodic array with long-range order, producing constructive interference at […]

Electrochamical Characterization of Bovine Serum Albumin on Phenoli Coated Nickel Titanium

Words: 909 Pages: 3 4733

Blood-material interactions are critical for the performance and biocompatibility of biomedical devices, implanted in thousands of patients every day. When an implant is introduced into the body, both protein adsorption and the activation of complement proteins occur [1-3]. A series of interactions happen [4], where firstly, water molecules reach the surface of the implant and build a water shell around it on a timescale that is of the order of nanoseconds. The interaction of the water molecules with the surface […]

Characterization of Amyloid Fibrils and Protective Effects of Silibinin

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Amyloid fibrils are abnormal, fibrous protein deposits that grow on the outer membrane of the cells. They are insoluble and do not function to provide structural support or motility in humans. Amyloids are known to show major impact on diseases like Alzheimer’s and type II diabetes which progress over a period of time and are associated with high mortality (1). There are no effective treatments known for amyloid-related diseases, therefore, searching for compounds that can effectively inhibit the formation of […]

What do you Know about Fracking?

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What do you know about fracking? Some oppose it and some think it is our solution for a better economy. Companies are trying to make it more popular for the economy, and for their company. In this essay, you will learn more about fracking and what it does. So, what is hydraulic fracturing? Hydraulic fracturing is also known as fracking. Fracking in a process in which oil and gas companies drill in to the ground. The drilling done is to […]

Large-Area Synthesis of Graphene Films Transfer Process

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Recently, much attention has turned to the structural and electronic properties of carbon-based materials. At present, especially, graphene is the hottest topics in condensed-matter physics and materials science. This is because graphene has not only unusual properties regarding extreme mechanical strength, thermal conductivity and 2-diemensional films, but also peculiar electronic characteristics such as Dirac-particles with a linear dispersion, transport energy gap and simply absorption coefficient of lights (Geim & Novoselov, 2007; Nair et al., 2008). These unique properties mean it […]

Applications of Large Scale Graphene

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Graphene for nanoelectronics Graphene shows a glaring ambipolar electric field effect such that charge carriers can be tuned continuously between electrons to holes. Single layer graphene atop a thermally grown SiO2 layer on a highly doped Si substrate may serve as a prototype of a field effect transistor. Under this configuration SiO2 serves as an insulating layer, so a back-gate voltage can be applied to vary carrier concentration (figure 11b). Early graphene FET devices demonstrated by Novoselov exhibited dopant concentrations […]

Transmission Electron Microscopy Techniques

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In this study, the researchers cultured 42GPA9 and HeLa cells on the cover slide for one day and transfected with Cx43-GFP. The researchers applied high-resolution microscopy to study the cells. Also, they used computer software to study the cells. The JEM-2100 Transmission Electron Microscope is a machine that provides the solution for a broad are of problems in the area of biological sciences, materials, and Nano electronics. The JEM-2100 is precisely very simple to use as it has a system […]

Air Quality and Climate Change Research

Words: 2081 Pages: 7 4348

Air pollution is a mixture of solid particles, such as car emissions and dust, and gases mixed in the air. It has many critical effects on a country as it may affect people’s health by causing severe asthma and heart disease. The principal cause of air pollution is the high emission of sulfur dioxide (SO2) which results from the burning of sulfur that contains fossil fuels such as coal and petroleum. Kuwait is extremely dependent on oil production thus that’s […]

A Novel Therapeutic Strategy for HER2 Breast Cancer by Nanoparticles Combined with Macrophages

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Abstract:In recent years, the cell membrane bionic nanoparticles as a new drug delivery system is widely used in small molecule drugs, vaccines and targeted delivery of macromolecular drugs, because of its inherited the specific receptors on the cell membrane and membrane proteins can be used to implement specific targeted delivery, and the tumor showed a good treatment effect on the disease such as model, this topic with a huge bite cell membrane of the role of tumor capture, chemical modification, […]

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