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.
According to Kail, (1993) as children grow, their analogical reasoning performance increases since the concept is dependent on neurological maturation and therefore canto process information quicker. The nature of this developmental trend was clearly verified in a study by Hale (1990) who tested four age groups (10, 12, 15, and 19 year olds) on a … Read more
Abstract Identifying a good site for groundwater exploitation in hard-rock terrains is a challenging task. In Sinai, Egypt, groundwater is the only source of water for local inhabitants. Interpretation of satellite data for delineation of lithological units and weathered zones, and for mapping of lineament density and their trends, provides a valuable aid for the … Read more
Viruses are tiny agents that can infect a variety of living organisms, including bacteria, plants, and animals. Like other viruses, the dengue virus has a microscopic structure that replicate inside a host organism (Halstead, 2008). Dengue viruses belong to the genus flavivirus within the Flaviviridae family. DENV-1–4 evolved in non-human primates from a common ancestor … Read more
NORMAL HEMOGLOBIN STRUCTURE: Hemoglobin is present in erythrocytes and is important for normal oxygen delivery to tissues. Hemoglobinopathies are disorders affecting the structure, function or production of hemoglobin. Different hemoglobins are produced during embryonic, fetal and adult life. Each consists of a tetramer of globin polypeptide chains: a pair of ”-like chains 141 amino acids … Read more
Oxygen-free radicals are known to be reactive oxygen species (ROS) with the reactive nitrogen species (RNS) which play important role in deleterious and beneficial species. The redox active metals are like iron (Fe), copper (Cu), chromium (Cr), cobalt (Co) and other metals which have an ability to produce reactive radicals like superoxide anion radical and … Read more
Human immunodeficiency virus (HIV-1) is the causative agent of acquired immunodeficiency syndrome (AIDS). In 2015 36.7 million people were living with HIV/AIDS worldwide, 1.1 million of which died of AIDS related illnesses (WHO factsheet, 2016 ). In sub-Saharan Africa, the most affected region, 25.6 million people were living with HIV in 2015. Current treatment of … Read more
1.1 Endoplasmic Reticulum Stress Pathway The Endoplasmic Reticulum (ER) is a membrane-bound, intracellular organelle responsible for the proper folding, posttranslational modifications, and trafficking of transmembrane and extracellular proteins as well as maintenance of calcium homeostasis[1]. Perturbations of the specialized environment of the ER due to numerous stressors, including glucose deprivation, aberrant calcium regulation, or increased … Read more
Abstract Recent research has shown that deep learning methods have performed well on supervised machine learning, image classification tasks. The purpose of this study is to apply deep learning methods to classify brain images with different tumor types: meningioma, glioma, and pituitary. A dataset was publicly released containing 3,064 T1-weighted contrast enhanced MRI (CE-MRI) brain … Read more
INTRODUCTION 1.1 Background of the study Complications associated with Human Immunodeficiency Virus (HIV) infection since it was first reported has become a global issue worthy of research (Leao et al., 2009; Frezzini et al., 2005; Nath, 2015). Newer complications are emerging frequently (Nath, 2015); which may be due to immune reorganisation, opportunistic infection, or the … Read more
Abstract: This study focus on to the change of the execution of polyamide (PA) thin-film composite (TFC) reverse osmosis (RO) membrane utilizing surface alteration by MgSiO3 nanoparticles. This has been an expert by means of holding of the practical grafting of PA layer with magnesium silicate nanoparticles (MgSiO3) in the presence of 2-acylamido 2-methyl propane … Read more
Ethnopharmacological relevance: Ardisia colorata (AC) is being used as a folk medicine to treat liver diseases, cough, diarrhoea and diabetes mellitus in Asia especially in North-eastern India. Materials and Methods: In this study, we investigated (1) the abundance of phytochemicals present in the methanol extract of AC (ACME) by GC-MS analysis, and (2) gonado modulatory … Read more
INTRODUCTION Endometriosis is a benign, estrogen-dependent, inflammatory disease that affects women during their reproductive age. It is defined as the presence of endometrial glands and stroma outside the uterine cavity; the lesions are typically located in the pelvis but can occur at multiple sites, including bowel, diaphragm, and pleural cavity1. Endometriosis is one of the … Read more
The first step of translation is called initiation. In this step, mRNA, a tRNA containing the first amino acid of the polypeptide, and two ribosomal subunits come together to start the process. The small subunit then binds to both mRNA and a specific initiator tRNA, which contains the amino acid methionine (MET). Next, the subunit … Read more
Abstract Vaccines need to have high affinity B cells to neutralize and stop the spread of viral infections. Monitoring follicular T cells, as they are key members in vaccination, helps one to predict their ability to elicit humoral responses leading to protection against harmful microbes, and preventing said microbes from replicating. Production of high affinity … Read more
In the Indo-Gangetic Plains (IGP) of India, rice (Oryza sativa L.) is taken by conventional tilled puddled transplanted (CT-PTR) method. CT-PTR requires a lot of water (2000-2500 mm) which comes mainly from groundwater. Due to declining water table and changing climate, the sustainability of CT-PTR rice is under immense pressure. The alternative to CT-PTR could … Read more
