Scanning electron microscope

Abstract. In this work investigation for the effect of compressed CO2 on the morphology of the produced Polyaniline (PANI) was carried out. The conventional oxidative polymerization using ammonium peroxydisulfate as oxidizing agent was used with and without compressed CO2. The results showed that different morphologies of PANI nanorods and PANI nanoparticles were produced using the conventional polymerization with and without compressed CO2 respectively. Molecular characterization of the…

Introduction: The ultimate goal of this laboratory experiment was to have a better understanding of phagocytosis and how certain factors may affect the rate of phagocytosis. The first part of the experiment was to test the effects of both concentrations of India ink, and feeding status on the rate of phagocytosis. Through this testing one can identify the conditions necessary to obtain the highest rate of phagocytosis. The second part of this lab was taking the variables that maximize the rate…

sample in order to examine whether there is semen contaminated by using the acid phosphatase enzyme method. (Mcewen & Regoeczi 2015). In order for a forensic expert to confirm the results, they would need to analyse the bodily fluids sample under a microscope. Phenolphthalein is used to test blood, it is a colourless substance which shows whether blood is present, and luminal is another test used by forensics as it is able to detect even the smallest drops of blood. The phadebas amylase test is…

They used a CAT scan to calculate brain volume, eye size, and different spots on the teeth. Scientists also used scanning electron microscopes to photograph the fossil’s teeth. It was determined that these monkeys were fruit/leaf eaters like most tropical monkeys. Scientists also studied the hominid’s DNA. The average number of chromosomes a monkey has is 42 to 54. The number…

ABSTRACT Solubility is the phenomenon of dissolution of solid in liquid phase to give a homogenous system.Solubility is one of the important parameter to achieve desired concentration of drug in systemic circulation for pharmacological response to be shown. Poor watersolubledrugs often require high doses in order to reach therapeutic plasma concentrations after oral administration. Low aqueoussolubility is the major problem encountered with formulation development of new chemical entities. Any…

Sample is slowly and carefully placed on the mixture to avoid air bubbles. Sample is clamped for 24 hours to allow it to stick. Sample is removed and is now grinded down to 30 m to become translucent and therefore become visible under microscope. 5.2.2 Preparation of a dyed sample Sample is cleaned and cut into a square of size 2X2 cm. Dye is prepared using 95 mg epoxy Resin, 0.3 mg blue Dye, 12.5 ml thickener, 12.5 ml thinner Epoxy and hardener mixture is prepared (used to glue samples…

shown in (Table 1). The solution pH was measured using digital pH meter (Hanna instrument model HI 8519, Italy). Fourier transform infrared (FT-IR) spectra were measured on Nicolet is 10 FTIR spectrometer in the range of (4000 to 400 cm-1). Scanning electron microscope (SEM, Quanta 250 FEG, FEI Company, USA) at an accelerating voltage of 30 kV was used for evaluation of surface morphology and particle size determination. The specific surface area of the HAPNRs was measured by the BET-method…

The plasma membrane also known as the cell membrane is found in every cell. The cell membrane is around 7-10nm, making it difficult to view even with a transmission scanning electron microscope (it only shows a double black line), this means that no one knows exactly what the membrane looks like. All membranes have the same basic structure made up from phospholipids (fats). The membrane is made up of a phospholipid bilayer; consisting of a polar phosphate head and two fatty acid tails. The head…

direction. As natural material, the shale rock samples are not homogenous, so for each sample, at least 12 tests are done on the sample and averaged to get a result to be statistically correct. The indentation points are chosen carefully using the microscope before each test with the setting conditions shown in table above. Figure below shows the example of the shale sample, indentation line profile and single indentation mark on the sample surface Figure 2: Example of…

A forensic Anthropology studies dead bodies and determines who the person is and they determines the cause of the person death. When someone dies they call a forensic Anthropology to finger out why this is person dead. When skeletonized remains are discovered, the first step to determine whether the bones is human remains. If so, the sex, race, age, stature, of the skeleton in order to established the identification of the remains, determine manner and cause of death and, if homicide, forensics…