Analytical Reflective Essay

Spectrophotometry is the process by which the light energy absorbed by colored compounds, is determined and used for quantitative and qualitative analyses. We use this process to often produce a standard curve, and use that to compare absorbance with different factors. In Experiment 3.1-3.4, spectrophotometry is used to produce the absorbance spectrums for the basic and acidic forms of PNP, to determine the pKa of PNP, and to develop standard curves for determination of unknown concentration and

Carl Gustav Jung, a Swiss psychiatrist and psychoanalyst who was the founder analytical psychology, once stated: “The contents of the collective unconscious are archetypes, primordial images that reflect basic patterns that are common to us all, and which have existed universally since the dawn of time” (Carl Gustav Jung). Originally published in 1597, William Shakespeare devised a renowned play about two star-crossed lovers, Romeo and Juliet. Most can argue that a prominent factor behind the choice

The speciation of WO3 species and the effect of B2O3 on the coordination states of WO3 species were surveyed by the UV–vis DRS technique, and the results are shown in Fig 6. All the spectra were obtained by deducting the spectrum of the support UiO-66. For comparison, the UV–vis DRS spectrum of bulk WO3 is also presented, exhibiting a strong absorption band at 450 nm with a weak shoulder at 360 nm, accompanied by relatively weaker bands at 230 and 280 nm (Fig. 6A-a), and these bands are attributed

interpretation of absorbed radiation in atomic level. 70 different elements in solution or solid samples practically used in pharmacology, biophysics and toxicology research can be found by ASS. [1] Atomic absorption spectroscopy was initiate as an analytical technique, and Robert Wilhelm Bunsen and Gustav Robert Kirchhoff who was professors in University of Heidelberg, Germany proposed the hidden principles were created in the second half of the 19th century. [2] The new form of AAS was widely developed

Vertigo is a psychological thriller film directed by Alfred Hitchcock, with a key theme of voyeuristic fetish and erotic obsession. The male protagonist, Scottie is depicted as the dominator in a heterosexual relationship with two female characters: Judy, who fakes Madeleine to seduce Scottie and deceive him to make false testimony for a planned murder, and Midge, the confidante of Scottie who is secretly in love with him. Through the interactions with Scottie, Judy and Midge are portrayed as submissive

Summarized Results To construct a calibration curve, five standard caffeine solutions are prepared and their retention times and peak areas are obtained from the High Performance Liquid Chromatography (HPLC) (Table 1). A graph of peak area versus concentration of caffeine standard solution is plotted (Figure 1). The slope of best fit line and intercept of the calibration curve are 97160384 and -3134906.6 (equation 1 and 2). The standard deviation of slope is 45811392.43 (equation 3). The standard

The English Curriculum (2014) values the position speaking, listening, reading and writing have as independent lessons. However, all four sectors combined are recognised as a positive developmental factor in the intellectual growth of students. It is expressed within the English curriculum how significant spoken language is; in relation to child development and also in terms of student’s progression throughout the wider curriculum. Researchers such as Owen and Burnett (2014) state that spoken language

In Rosemary Jolly's class, students performed the hot plate procedure in order to evaporate the water from the unknown hydrate.  The equipment that the students used were two 100-mL beakers, an analytical balance, a hot plate, and a clean glass rod to stir the substance.  Students obtained about 1 or 2 g of the unknown hydrate into one of their 100-mL beakers.  They determined the combined mass of the sample and the beaker.  After doing this, they

Chromatography is a technique used to separate a mixture of compounds for analytical or preparative purposes. In liquid chromatography, the mixture of compounds is dissolved in a liquid mobile phase and then travels through a stationary phase, which acts as the adsorbent. Solute molecules interact with the stationary phase through adsorption and desorption. A compound which has stronger interactions with the stationary phase will move slower than a compound with weaker interaction with the stationary

Methods Preparing Spin Labels R5 spin labels were placed within a “kink-turn motif” site where the internal loop between nucleotides that are not base paired (Figure 2). This site was held constant throughout the study in both the 20-nucleotide RNA study and the 232-nucleotide mRNA study. Both the synthetic 20-nucleotide long mRNA and the R5 spin label precursor were purchased from lab companies; the mRNA was purchased from Dharmacon, and the R5 spin labels were purchased from Toronto Research Chemicals