8. What should be approximate wavelength of the depletion laser in a STED microscope for imaging of Rhod-2: SOLUTION: 9. What is the actual resolution (in nm) of electron microscope operating at accelerating voltage of 70 kV with a magnetic lens operating at aperture angle of 0.5°?
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- Given: The used ocular objective while taking this image, has magnifying power of 6x The used objective while taking this image, has a magnifying power of 100x The used stage micrometer has spaces graduation of 01 mm each Ten (10) graduations pn the ocular micrometer conincided with two (2) graduations on the stage micrometer Question: What is the total magnification of the image under microscope? Show your solution.(b) Table Q1 below provides optical measurements of samples with known concentrations of analyte (ten samples were measured and the average and standard deviation are presented). They are also represented graphically in Figure Q1, below the table. Analyte concentration (nM) 0.1 0.2 0.5 1 2 5 10 15 fluorescence intensity 300000 250000 200000 150000 100000 50000 0 0 Table Q1 Fluorescence intensity (average) 9300 9200 10800 19600 37200 90000 178000 224000 5 [Analyte]/nM 10 Standard deviation 2000 1200 1000 2000 10000 30000 25000 40000 15 Figure Q1. Signal intensity for different analyte concentrations. Error bars are standard deviation. (ii) Calculate the limit of detection (LOD) for this sensor. (iii) A patient sample measured using this biosensor in the diagnostic laboratory generates a signal of 142800. The coefficient of variation of the device is 5%. Explain whether the diagnostic lab would have the confidence to report that the sample has a concentration in analyte of 8 nM or…In UV/Visible spectrophotometer analysis for a multicomponent system, there are only two dyes used in the mixture, the two proportions should be totalled to 1.0. but on finding You got 0.6 in total. Explain the reasons for the difference.
- Given: The used ocular objective while taking this image, has magnifying power of 6x The used objective while taking this image, has a magnifying power of 100x The used stage micrometer has spaces graduation of 01 mm each Ten (10) graduations pn the ocular micrometer conincided with two (2) graduations on the stage micrometer Questions: What is the total magnification of the image under microscope? Show your solution. What is the distance of one ocular division? Show your solution. What is approximate cell length of Cell A, Cell B, and Cell C? What is approximate combine cell length of Cell A and Cell B? Show your solution. Remember: Always measure the cell length on the longest middle section of the cell!the optical density of your cell culture is 0.92. How much of this culture should you add to 500 mL of LB to obtain a starting optical density of 0.1?A solution containing two different fluorescent compounds, Ben and Jerry, were analyzed for their individual concentrations in the mixture. Standards of pure Ben and pure Jerry were prepared at a concentration of 500.0 mM and were run in a UV-Vis Spectrophotometer to determine their absorption properties. Absorbance Wavelength Compound Ben 500 mM Compound Jerry 500 mM 400 nm 0.137 0.136 450 nm 0.312 0.113 500 nm 0.154 0.078 550 nm 0.076 0.079 600 nm 0.227 0.148 650 nm 0.230 0.230 700 nm 0.151 0.357 750 nm 0.157 0.246 800 nm 0.154 0.154 A standard curve of the standards was also prepared to help determine the concentration of each component in the solution. The solution produced an absorbance reading of 0.486 at the Amax of Ben, and 0.463 at the Amax of Jerry. STD CURVE BEN Amax Ben Amax Jerry STD CURVE JERRY Amax Ben Amax Jerry CONC (mM) ABS ABS CONC (mM) ABS ABS 100 0.074 0.025 100 0.037 0.074 200 0.148 0.057 200 0.081 0.148 400 0.284 0.103 400 0.164 0.284 800 0.607 0.218 800 0.287…
- Relative fluorescence at 603 nm 1.0 0.8 0.6 0.4 0.2 0.0 L 0.00 0.10 0.20 0.30 Time (s) 0.40 0.50 0.60 In this FRET data table, an antibiotic was added, but the type was not recorded. According to the results, could the buffer being used be either negamycin, tetracycline, rifamycin, or cycloheximide? Explain why based on the FRET data.Compare the two (or more) quantum dots emission at850 pbs/cds.. lnGaAs materials - which would be preferable for labeling certain molecules/organelles in biological samples for fluorescence microscopy? What were your considerations for this choice?The figure above depicts an agar cube with a side length of 13\, \text{mm}13mm13, start text, m, m, end text. In an experiment, students submerged the cube in red dye for 121212 hours. The red dye permeated 1\, \text{mm}1mm1, start text, m, m, end text on each side, as indicated by the shading in the figure. Volume of a rectangular solid: V = lwhV=lwhV, equals, l, w, h Calculate the volume of the agar cube that remained unpenetrated by the red dye.
- Consider a bi convex lens with radius of curvatures |R1| = 30 mm and |R2| = 180 mm, ct = 5 mm and glass is N-BK7. This is used as camera lens in order to image a man who is at 1 km away from the camera. We want to resolve 10 cm on his body. Assume that λ = 550 nm. Using zemax, determine the MTF value for the resolution of R = 80 lp / mm in image plane which is placed at paraxial focus. (Hint: First, find the diameter of the lens) Which one: a.32.1 % b.28.7 % c.12.3 % d.58.5 % e.46.8 % f.57.2 % g.20.9 % h.15.6 %You may want to use this resource for this problem. If you do, submit the output along with your solution.You have been given a confocal microscope equipped with the following lasers, excitation filters, andemission filters:Laser Emission filter355 nm 410-470 nm405 nm 470-500 nm488 nm 500-550 nm532 nm 570-610 nm561 nm 610-650 nm640 nm 660-700 nm808 nm 720-780 nmYour task is to design an experiment to visualize the following:1. Nuclei2. A fluorescent protein in the cytosol3. A cell membrane marker antibody conjugated with a fluorophore4. Actin filaments5. LysosomesYou may choose from the following fluorophores for each of the five channels:Nuclei Fluorescent protein Membrane marker Actin marker Lysosome trackerDAPI GFP FITC AF488 Phalloidin LysoTracker RedHoechst 33342 YFP WGA-TRITC AF568 Phalloidin LysoTracker DeepRedSYTO Deep Red RFP Cy7 AF594 Phalloidin LysoTracker Blue Part 3.1Choose appropriate fluorophores for each of the subcellular structures to be imaged, taking into…In confocal microscopy, what is the theoretical resolving power of the objective used (63X, NA 1.3, oil immersion noil=1.52)? Clearly show your calculations.