How to do regression analysis in SPSS when the independent variables are manipulated (I only measuring the dependent variables in the survey)?

So in my research the independent variables are manipulated online review content (manipulated valence, platform, etc). There are 6 different groups with different manipulations (conditions). And...

14 July 2019 3,996 3 View

What is the best instrument to check on elements of lubricating additives? Using types of chromatography or any engine test?

To know the elements in PIBSI one of the additives for lubricants

08 May 2019 1,111 3 View

How to do miRNA isolation from hematopoietic stem cell with good purity?

Hi, currently I am isolating miRNA from hematopoietic stem cell using miRNeasy Qiagen kit. However, I didnt get good purity for both A260/280 and A260/230 plus low concentration as well. According...

14 October 2018 6,123 1 View

Can someone help me with sample size?

Here is the case: comparing systolic blood pressure (in mmHg) in a trial of new drug and placebo. Now I know that the formula of minimum sample size for this case is: 2.((Za + Zb).SD/d)2 Red: 2...

18 January 2017 8,525 5 View

How to determine the optimum voltage and time for a better separation in gel electrophoresis?

28 July 2016 4,436 3 View

Is no problem if I do Ethanol precipitation with composition glicogen, Na-asetat, before and after phosphorylation PCR product by T4 PNK ?

Dear all, Is there anyone have experience do ethanol precipitation PCR product prior to phosphorylation by T4 polynucleotide kinase? According literature ethanol precipitation by ammonium asetat...

26 July 2016 1,035 3 View

How to design phosphorylation PCR product ?

Dear ALL I want to phosphorylate my PCR product, please give me sugestion how to calculate p mol PCR product.., is there any protocol without converse.., is there any link or literature I can use...

21 July 2016 6,551 1 View

How do I grow single cell become colonies after sorting by FACS in mcf7 cells?

I have already prepared knock out cell by using px459 for knock out mcf7 cell then shorting by using FACS to get single clone, one day after FACS I get around 10 single clone/well ( positive EGFP...

20 December 2015 7,935 6 View

Is there a possibility that the virus accepted by the cells after several days was rejected from the cells, in a stable transfection of a cell line?

I had injected retrovirus containing pBabe.puro.cmv and pcl ampho to the F1 B16 and then after 24 hours and 48 hours I did puromycin selection, The First days and second days the cell decrease...

01 April 2015 3,936 12 View

How to compare two groups with only two measurements?

Hiiiii everyone! I have an enquiry on statistical analysis. I was looking for many forum and it's still cannot solve my problem. I want to compare means of two groups of data but only with two...

03 March 2021 8,796 3 View

Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence?

I am on the lookout for the Enhanced Yellow Fluorescent Protein (Aequorea victoria) DNA sequence. Does anyone know where I can find it? Thank you in advance

03 March 2021 3,568 1 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10?

What's the best way to measure growth rates in House sparrow chicks from day 2 to day 10? Since, the growth curve from day 2 to 10 won't be like the "Logistic curve" it might not follow logistic...

03 March 2021 1,401 3 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 3 View

How to calculate average trend in maximum annual NDVI from MODIS?

I am wanting to calculate the average trend in maximum annual NDVI in Iceland from 2010-2020 using MODIS MYD13Q1 V6. How would I do this? I have currently inserted the NDVI bands from the MODIS...

02 March 2021 752 2 View