Science essays

1 Introduction This report covers tasks 1-3 of the musculoskeletal system. Task 1 will cover the identification of the main parts of an adult skeleton, using diagrams and tables there will be details of a long bone and its structure. There will also include an explanation of the different properties of bone and cartilage, and … Read more

Amaranthus dubius leaf extract ( Muthukumar et al.,2015), used to synthesis iron nanoparticles because it contains various photochemicals like amaranthine, isoamaranthine, phenols, flavonoids, and lysine that are used as reducing agents(Yizhong et al., 2003; Jannathul et al., 2014). 20 gm of leaves were heated with 100 mL distilled water at 50 °C for 45 min … Read more

Introduction The activation energy of a chemical reaction is the amount of energy required to break apart the bonds of the reactants in order to bring them into a transition state, where they form new bonds to form products releasing energy. A catalyst, whether it is biological or not, provides an alternative route for the … Read more

After the research project was approved by the Research Ethics Committee of the Necmettin Erbakan University), 42 third molars were selected and cleaned with 4C distilled water. Reasons for the extractions were not related to the purpose of this study. Crowns were sectioned at the enamel–cement junction, using double-faced diamond discs (Isomet Low Speed Saw, … Read more

Introduction Cancer is a class of disease in which group of aberrant cells develop uncontrollably by neglecting the ordinary rules of cell division (Hejmadi, 2010). Cancer is noted to ensue in all communities and in all parts of the world. It disturbs animals and also man. In humans, cancer is recognised to have been present … Read more

An unknown compound was discovered in a local landfill. Investigation of the identity of the unknown compound served the purpose to determine the reactivity of the compound and its hazards to the environment to determine if it was safe or toxic for the environment and needed to be removed from the landfill. The goals included … Read more

Aggregation of aberrant proteins and inclusion bodies are hallmarks in most neurodegenerative diseases. Consequently, these aggregates within neurons lead to toxic effects, overproduction of ROS and oxidative stress leads to cell loss. Autophagy is a significant intracellular mechanism that removes damaged organelles and misfolded proteins in order to maintain cell homeostasis [41]. In recent years, … Read more

All proteins consist of amino acids, organic molecules made from Carbon, Hydrogen, Oxygen and Nitrogen. Collagen is the most ample protein in mammals, in fact collagen constitutes around 25 % of a mammals entire protein content, Collagen is more precisely a family of proteins rather than one particular protein. Fibroblasts are the cells that usually … Read more

Abstract Reactive carbonyl species (RCS) are a common within living organisms, and are primarily recognized for their damaging properties. The main reason they are formed, are through the oxidation of lipids, amino acids and carbohydrates. RCS creates cytotoxicity and mutagenicity, by the chemical modification of aminophospholipids, proteins and nucleic acids. A large number of cross … Read more

Abstract Water on Mars has been an on-going topic throughout planetary research and only recently has new evidence shown that it could be true in present day conditions. As technology advances, our knowledge on space exploration does also and technologies such as HiRISE, Curiosity and MRO have allowed us to gain an understanding of Mars … Read more

Iron is one of the most essential growth elements for all living organisms. PGPB produce low-molecular-weight compounds called siderophores in soil free from iron to acquire ferric ion (Raymond et al., 2003). Bacteria, fungi and grasses produce and secrete Siderophores which are small, low-molecular-weight compounds and high-affinity iron chelating compound. It is called “iron carrier” … Read more

SK-N-SH human neuroblastoma cell lines obtained from National Center for Cell Science (NCCS) Pune, India were cultured with Dulbecco’s modified Eagle’s medium (DMEM) containing 10 % fetal bovine serum (FBS) (Himedia), 2 mM glutamine and penicillin/streptomycin (100 U/ml) in an incubator humidified with 95 % air and 5 % CO2. The medium was changed for … Read more

MMP-2 plays an important role during tumor development and invasiveness in various human malignancies e.g. hepatocellular carcinoma, glioma, colorectal carcinoma. Scarce data are available on the role of MMP-2 in MF especially in the early stage. Sp-1 can mediate the oncogenic effect of MMP-2 through different signaling pathway (Hung et al., 2010; Sze et al., … Read more

The esophagus is not immune to disease, despite its superficial simplicity. The particular disease state of interest for my project addresses Barrett’s esophagus (BE). Barrett’s esophagus is defined as a change in replacing the normal squamous epithelium lining of the esophagus with specialized columnar epithelium that has goblet cells, typically in the distal esophagus. Metaplasia … Read more

Abstract: Groundwater in contact with ore deposits may acquire a chemical composition that could be used as a guide for exploration. Eight well-wa ter samples are collected from a known uranium- mineralized area near Abu Zenima, west central Sinai to examine the applicability of using the hydrogeochemical technique in the search for uran ium mineralization … Read more