for several days. FT-IR spectra of Fe3O4‚ mercaptosuccinic acid and mercaptosuccinic acid functionalized Fe3O4 are shown in Figure 1(a-c)‚ respectively. In Figure 1a‚ the sharp band at about 585 cm-1 corresponds to the characteristic Fe–O vibration peak and the bands at around 3420 cm-1 are due to the stretching vibrations of the hydroxyls (–OH) on the surface of the Fe3O4. In Figure 1c‚ the S-H stretching vibrations of mercaptosuccinic acid appears in 2800 cm−1، C-H stretching vibrations appears in
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Problem What do additives – like citric acid‚ sugar‚ salt‚ baking soda‚ cornstarch‚ and powdered milk – do to the strength ̸̸̸density of gelatin? Hypothesis I hypothesize that the higher the density of the additive is‚ the higher strength/density the gelatin will have. The materials you will need for this experiment are; • 2 packs of unflavoured Knox gelatin (1 box) • A pencil/pen and paper to record data • 3 tablespoons of citric acid • 3 tablespoons of sugar • 3 tablespoons of salt • 3 tablespoons
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et al Abstract: The purpose of this lab was to determine how light affected photosynthesis‚ specifically the production of O2 bubbles. It was predicted that when the light was more intense the O2 bubble production will be high. Conversely‚ when the light was less intense the O2 bubble production will be lower. Basically the plant that is closer to the light will produce more bubbles than the plant that is placed farther away from the light source. In this lab the independent variable is the light
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The analysis of reports through human PAX6 Allelic Variant Database (Brown et al.‚ 1998) suggests that more than two third of mutations are associated with congenital eye malformations. Mutations in the PD have been described well but on the HD and transactivation region
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FACULTY OF ENGINBERING AND BUILT ENVIRONMENT BEng (Hons) Civil Engineering Structure I Deflection Contents: Introduction 3 Objectives 3 Apparatus 4 Procedure 4 Results 4 Discussion 7 Conclusion 7 References 8 Introduction: The deflections of a beam are an engineering concern as they can create an unstable structure if they are large. People don’t want to work in a building in which the floor beams deflect an excessive amount
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that cigarettes release more then 20 carcinogens know to promote lung cancer into your body. (Hecht‚ 2010). When looking at the cilia exposed to cigarette smoke in this lab it is seen that they have been greatly slowed down when compared to the uncontaminated cilia‚ and parts of the cells are covered in tar from the tobacco. For this lab it was hypothesized that smoking will inhibit the ciliary action and lower the quality filter the greater affect will be exhibited by the effected cilia. The prediction
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Joshua Berkebile 8-26-10 1st period Density Lab The purpose of this lab was to find the mass‚ the length‚ the width and the height of 4 different cubes so we could calculate the volume and density of them. We also had to find the density of irregular shapes by dropping them into a graduated cylinder than subtracting the starting water volume by the ending water volume. Density is how much mass is in a certain volume of matter. Volume is the amount of room that an object
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Background Information Muscles in the human body can be classified into three different types- cardiac‚ smooth and skeletal muscles. The skeletal muscles are the muscles that can be controlled voluntarily‚ in things such walking and picking things up. The skeletal muscles are made up of bundles of muscle fibres (which are also known as myofibrils‚ as can be seen below). Each of the muscle fibres contain many sarcomeres‚ which is the most basic form of striated muscle tissue- they consist of two
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supports the general growth-enhancing effects of the substance‚ but does not conclusively demonstrate its mechanism. Unfortunately‚ the third experiment in which acrylic acid was used to inhibit the β-oxidation pathway did not clarify the origin of this effect. The absence of difference between growth of samples with acrylic acid‚ with and without squalane is ambiguous in its interpretation. This may mean that the
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Biology Laboratory Report MEASURING RATE OF WATER UPTAKE BY A PLANT SHOOT USING A POTOMETER Introduction All plants need salts minerals‚ water‚ CO2 and O2. To fulfill their requirements different plants use different ways. Lower plants use diffusion‚ however higher plants use vascular tissue that is located in the middle of the root and in the vascular bundles in the stem. The transpiration is the important process in the plant. The main reason is that transportation
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