In this section you’ll find free example science essays to inspire your own work. One of our biggest essay categories, our science section includes essays on physics, chemistry, botany, biology, palaeontology, genetics, geology and more. Find more science essays here. We also have a separate section for zoology essays.
Literature Review: Nausea is a condition described in various ways, depending on the individual describing the condition.2 Emesis is a hallmark standard for measuring degree of nausea, however many people experience debilitating nausea while lacking emesis. There are many different stimuli prompting nausea including, unexpected motion signals, toxins, migraines, gastrointestinal diseases, pregnancy, and psychological triggers.1 … Read more
Abstract: Drechslera teres, the causal agent of net blotch of barley (Hordeum vulgare L.), is a seed-borne and foliar pathogen. In the present study, six fungicides (Epoxiconazole, Azoxystrobin, Iprodion, Propiconazole, Thiophanate methyl and Mancozeb) were tested in vitro for their inhibitory effects against D. teres. Fungicidal toxicity was expressed as a percentage inhibition of mycelial … Read more
Power and privilege in psychedelic science: A call for cultural humility Psychedelic science is gaining momentum and increased recognition in the United States. Promises of psychedelic science include the opportunity to transform consciousness itself, to creatively generate new solutions to old problems, to elicit deep healing through self-reflection. Several private organizations and donors are funding … Read more
For over a century, paleontologists have been collecting abundant dinosaur fossils from the Western Interior of North America, with many of these fossils found in rocks dating back to the final stages of the Cretaceous Period. Only recently, however, have we learned that most of these dinosaurs existed on a “lost continent” today referred to … Read more
Introduction: The nature vs. nurture debate has interested scientists throughout history. The debate goes back as far as the Greek classical period in which Plato favoured nature, whilst Aristotle sided with nurture. The argument developed among ancient psychologists because of their interest in how individuals obtained their knowledge. In 1869 however, English Polymath, Francis Galton, … Read more
In studying the origin of modern human beings, anthropologists have assumed the science of modeling to determine this origin. Johanson (2001) estimates that about one hundred years ago, different hominid groups occupied the vast areas of Africa, Asia, and Europe; where Africa was occupied by Homo sapiens, Asia by Homo erectus and the Homo neanderthals … Read more
Suspended animation is “the temporary cessation of most vital functions without death”, essentially putting life on hold. First thought to be just a work of fiction, suspended animation has been brought into reality, specifically in the field of medicine. But, scientists are hoping to bring this technique to space. Space travel is long and harsh … Read more
Plan: Introduction: – Thesis statement (state position and argument w/ evidence and combine sources) – What is scientific management? – Why is Taylorism a controversial issue – Thesis: Scientific management approach is highly problematic, out of date and not relevant in a modern business environment – Use case studies to back this up Paragraph 1: … Read more
Copper is an interesting metal with nearly unlimited uses and potential. I am sure you have heard about the basics of copper, such as the fact that its atomic number is 29, it has a reddish-gold color, it is malleable, ductile, and a good heat/electricity conductor, and so forth. You also probably know that copper … Read more
ROV stands for remotely-operated-vehicle. ROVs were designed for military use to gaze over mountains to spot enemy trouble but they were also introduced and adopted by the offshore energy industries to support deepwater operations in the mid-1970s. ROVs were first mainly used by the navy to conduct various tasks. Today they are not only used … Read more
Does the prospective cohort study “Migraine and risk of cardiovascular disease in women”, demonstrate good quality science? What is good science? To properly evaluate the quality of a scientific study, it is important to highlight the guiding principles for proper scientific inquiry. The book “3 Guiding Principles for Scientific Inquiry”, which includes one chapter highlighting … Read more
Photo-catalysis is a promising method for the removal of organic pollutants, harmful chemicals and dyestuff from water and air. The activity of a photo-catalyst greatly depends on its ability to create electron-hole pairs, which generates free radicals that undergoes further reactions to rich the effluent degradation. An ideal material should combine: high efficiency in solar … Read more
Due to the fast reduction of fossil fuels and greater environmental pollution caused by automobiles, more attention has been focused on electric vehicles (EVs) or hybrid electric vehicles (HEVs). Lithium-ion batteries (LIBs) are the fundamental power source for the EVs or HEVs. The reversible capacity of the LIBs greatly appertains the cathode material. Olivine-type LiFePO4 … Read more
Introduction Circular dichroism (CD) is form of light absorption spectroscopy that measures the difference in absorbance of right- and left-circularly polarized light (rather than the commonly used absorbance of isotropic light) by a substance. It is applicable for molecules have one or more chiral chromophores [1]. Circular dichroism = ”A(”) = A(”)LCPL – A(”)RCPL, where … Read more
Abstract: DABCO-CuCl complex, efficiently catalyze the one-pot, three component reaction of an aromatic aldehyde, malonitrile and ‘ or ”-naphthol to yield 2-amino-4H-chromenes in very good yields. Keywords: DABCO-CuCl complex, 2-Amino-4H-chromenes, One-pot Introduction 2-amino-4H-chromenes and their derivatives are of considerable interest as they possess a wide range of biological properties,1 such as spasmolytic, diuretic, anticoagulant, anticancer … Read more
