I have to make lacZ- revertants of E. coli MG1655. I first need a strain which is lacZ-. How can I find a strain with this genotype on the Coli Genetic Stock Center (CGSC)?
I am looking for anti-nuclear antibody (ANA) and anti-Phospholipid antibody ELISA kit for Non Human Primate serum samples. Any suggestions highly appreciated. Thank you.
28 February 2021 6,512 3 View
While performing the Linear regression analysis in SPSS version 26.0.0. my intermediate/mediation variable goes to the excluded section. Please share your valuable suggestion "How to restrain the...
25 February 2021 4,591 5 View
Dear All, I am working on estimating Debt-Growth Threshold but confused about some points. My questions are; - How do we calculate initial GDP Per Capita? Shall we do it in STATA or excel file?...
15 February 2021 2,677 2 View
I am designing a DAB DC DC Converter and when I am connecting a battery block in Matlab and fix its specification lets say 350 V and 25 A, when I am giving input as 600V, Battery would charge to...
11 February 2021 3,110 1 View
I am trying to model a DAB converter and I need to observe the power transfeered to the load side on varying the phase shift between two bridges, hence I couldnt take a constant load e.g...
09 February 2021 6,489 3 View
The parameters of the curve all seem acceptable, typically reactions results are above 0.9852, -3.1 to -3.6 slope, and 90-110% reaction efficiency. The results seem to be what I would expect from...
04 February 2021 1,138 3 View
I used methylcyclohexane/ ethylcyclohexane / n-butyl acetate mixed solvent to dissolve thermoplastic SBS & terpene resin. The mixture is then poured onto a glass substrate. After solvent...
24 January 2021 8,306 3 View
I am separating the AuCNs, which are Au nanoclusters. I used the 3% stacking and 30% resolving polyacrylamide from the reference. Eachtime when the resolving gel is polymerizing, plenty of heat...
22 January 2021 8,522 3 View
Purified G actin and got 42kda band and an additional band just below it. While performing G actin polymerization and labeling with rhodamine-phalloidin I didn't observe filaments under the...
20 January 2021 3,751 2 View
I want to plot the distribution curve of dipole moment as a function of angles between dipole vector and solid surface in the presence of external electric field. My system is consisting a...
17 January 2021 1,508 4 View
We have HUVEC bought from Invitrogen. Cat no -C-003-5c. while first plating the cells we have bought the protocol suggests not to centrifuge the cell with media to remove the DMSO. Should we...
02 March 2021 3,713 2 View
I need help using the equation C1V1=C2V2 figuring out how much antibody to add to use for a western blot. The stock was origianlly 3.45 ng/ul but diluted 1:10 so now its 0.345 ng/ul. I need to run...
22 February 2021 9,901 3 View
Hello everybody In our iPSC-derived neuronal culture we use Maturationmedium, supplemented with B27+. As Thermo Fisher run out of stock and can deliver earliest in May, I wanted to ask whether...
16 February 2021 3,348 1 View
11 February 2021 3,524 2 View
Hi there, I would like to determine the unknown concentration of human insulin in my sample during crystallisation (the concentration range is roughly 0.5 -2 mg/ml, whereas the initial...
06 February 2021 9,370 7 View
I want to measure volume of Pinus roxburghii in the Jammu region of India to calculate the carbon stocks of Pinus roxburghii.
31 January 2021 2,311 3 View
I am doing research about the in-use stock of iron and steel in Japan. I need the report about annual yield of steel final production. I found some information in the webpage of Japan Iron and...
25 January 2021 3,867 2 View
19 January 2021 7,025 4 View
I need to prepare a stock of 10 mg / ml erythromycin to check the mic value. I am trying to dissolve 0.1g/10 ml of water but i can't dissolve erythromycin in water. How can i prepare 10 mg/ml...
03 January 2021 9,947 3 View
The solubility of tryptophan and tyrosine in water is low. Is there a very highly soluble structurally similar or derivatives of these amino acids I can use? it doesn't matter if it is...
20 December 2020 3,157 3 View