Science essays

1.1 Characteristics of Kaposi’s Sarcoma Kaposi’s Sarcoma (KS) was firstly described by a Hungarian dermatologist Moritz Kaposi in 1892, and the original five patients of KS all had a fatal outcome with 2-3 years. However, it was later found to be mostly an indolent disease which is common in the Mediterranean region and in parts … Read more

1. INTRODUCTION Bacteriocins are generally defined as ribosomally synthesized peptides produced by bacteria that have bacteriostatic or bactericidal activity against other related and unrelated microorganisms (Balciunas et al., 2013). Preservatives are natural or synthetic substances that are added to fruits, vegetables, prepared food items, cosmetics and pharmaceuticals in order to increase their shelf life and … Read more

Introduction Neural tube defects (NTDs) are severe birth defects of the central nervous system and refers to failed neural tube closure during embryonic development (Ghi et al., 2018). The phenotype presented by those with NTDs is dependent on where the neural tube remains open (Copp and Greene, 2010). Therefore, the seriousness of disease manifestation varies. … Read more

Abstract The aim of theses studies was to screen the nutritive value and the effects of anti-nutritionnal secondary compounds (condensed tannins) on in vitro rumen fermentation and methane reduction of eight substrates. Polyethylene glycol (PEG), a tannin binding agent is used to measure the biological activity of tannins from algerian forage species (Albizia julibrissin pods, … Read more

Sandflies (Diptera: Psychodidae and Phlebotominae) are abundantly found throughout the tropical and temperate region. In contrast to their name given, they are not found on sand. The sand fly larvae usually need organic matter, heat and humidity for the development and most commonly found in household rubbish, bark of old trees and cracks in house … Read more

Introduction The neural disorder is an essential health challenge which can be caused by accident or disease. Due to the complication of neural regeneration and predomination of neural disease, the evolution of the novel treatment approaches has been performed by researchers [1]. Tissue engineering or regenerative medicine is one of the multidisciplinary fields that could … Read more

Abstract In the present work, Zinc ferrite nanostructured materials were synthesized by a microwave combustion method (MCM) using Okra (Abelmoschus esculentus) as a plant extract and compared with the ones synthesized by a conventional combustion method (CCM). Plant extracts play a dual role of both oxidizing and reducing nature. Microwave assisted combustion method is a … Read more

Abstract Vanadium oxide based compounds are known to be excellent catalysts in many chemical processes. Over the years they have been developed and modify in order to broaden their application. In particular attempts have been done to prepare vanadium oxide nanostructure with better properties, i.e. higher resistance to corrosion, and containing ions and/or noble transition … Read more

Introduction and Literature Review 1- Introduction In each step of our life, we came across things were fruits of polymers researches. So, the middle of the last century, the working on these fields have been so rapidly and its applications are very useful. 1.1- Polysaccharides Polysaccharides are natural based polymers (carboxymethyl cellulose, starch, cellulose, chitin, … Read more

BIOL 4065 Sustainability and Complexity: Take Home Test 2 1. Reductionist methods of analysis involve dividing complex problems into their smaller and simpler components to understand the whole. As discussed in class, the world is too complex to be using reductionist methods to achieve sustainability because it ignores the interactions that happen between the parts … Read more

Various errors could have occurred, even though we tried to control the environment to ensure no errors, but, that is impossible because we don’t live in a vacuum area. These errors that could have occurred, could have altered the observations and conclusions. One source of error that could have occurred while working at station three, … Read more

The process of research is not only about learning and discovering, but also about sharing these discoveries with others, so that society as a whole can benefit from the efforts put in by the individual. When it comes to complex academic concepts, the choice of words for how a concept is described can make a … Read more

In this study, a new functionalized multi-walled carbon nanotubes (MWCNTs) were synthesized by chemical modification with 3-aminopyrazole (MWCNTs-f) and applied as an efficient adsorbent. In order to comparative study, carboxylated MWCNTs (MWCNTs-COOH) and MWCNTs-f were applied to the mercury and arsenic adsorption from aqueous solutions. The adsorbents were characterized by FT-IR, EDX, FE-SEM, TGA, and … Read more

ABSTRACT: Chlorpyrifos is an effective organophosphate insecticide that is widely popular in the U.S. agricultural sector. It is also an effective neurotoxicant and developmental toxicant, that has been associated with stunted growth and impaired cognitive function. The U.S. Environmental Protection Agency ordered that the pesticide be phased out from most household uses in 2000 because … Read more

Force to temperature a. The humidity postscript concept. Temperature finale is a summation of daily show temperatures completely a no ifs and or buts continuance of accomplishment or development. When the latitude drops to a evident level, high on the hog or development am within a well known area stop. Temperatures small this threshold are … Read more