How much amount of DNA (ligation mix) should I use for transformation?

Hi Fellow Scientists! I am trying to clone my 300 bp insert into a 6 kb vector. I run a few different ligation reactions using (1:3 vector: insert molar ratios) 10, 20,30, and 40 ng/ul vector...

15 February 2021 9,563 6 View

Are negative valued indicators allowed in SEM?

Hello, Using secondary and continuous data, i am trying to run a SEM with two latents. One indicator has both negative and positive values. Is it wrong? (I am gonna run the model in AMOS) Thx on...

14 February 2021 2,801 8 View

How to de-clump HEK293 suspension cells?

I have a problem with clumping of HEK293 suspension cells, and this clumping problem decreases the cell viability. I will transfect the cells if I were to reach a favorable cell count. What can I...

17 January 2021 354 4 View

How post-hoc test should I perform for two way repeated measures ANOVA for 3 groups?

Hello everyone, I have 3 groups and 4 measurements so, I performed two-way repeated measures ANOVA. How can I detect the difference (which groups and which measurements) when there is significant...

27 October 2020 4,503 3 View

How to estimate dichotomous variables in SEM?

14 October 2020 5,912 3 View

How do We Maintain Appropriate Cell microenvironment with 3D Cell Culture Method?

3D Cell Culture is newly optimized and promising discovery in cell organization research and other researches that needs evindences in cell culture (in vitro) level. Are 3D Cell Cultures mimic...

23 September 2020 7,109 4 View

How do We Clarify the Effects of Drugs on DNA Replication?

DNA Replication and its components are common targets in discovering new drugs as antimicrobial therapeutic agents especially while dealing with antibiotic-resistant species and other diseases...

21 September 2020 6,172 4 View

Can you give information about how to calculate the molarity of MEA?

Hi, I am trying to produce CZTS films by sol-gel spin technique. Can you give information about how to calculate the molarity of MEA? Did you calculate the MEA molarity separately for each metal...

11 July 2020 3,415 1 View

Do weak contribution equations within a module use the module's boundary condition in COMSOL?

I am trying to solve a partial wave equation for scattered quasi-TE waves. I found the COMSOL built-in Helmholtz equation module very close to my problem. The bottleneck was that, I couldn't...

03 June 2020 8,937 1 View

How Can I find a reverse primer with good rating, if I need to amplify entire gene?

I need to amplify the KCNA1 gene. I could not design the reverse primer with GC content ~50%, G/C content between 40-60%, rating 100, and no secondary structure. Any help much appreciated!

25 May 2020 7,276 9 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

Logistical regression using SPSS for a dichotomous dependent variable, with an independent variable of 1, 2, 5 and 10 seconds?

I have an experiment with 28 participants The independent variable is the times 1, 2, 5, and 10 used as the cross hairs during a task These 4 times were tested using 4 different blocks, each...

03 March 2021 9,692 2 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

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature)?

1. What is the impact of having different scales in a survey? and how can we solve this problem before and after data collection (Literature-based reflection)? Thank you for your time and for...

03 March 2021 2,870 3 View

What degree of missing data in a particular case/participant results in Expectation-Maximisation no longer working?

I'm dealing with a mediation model and am using the PROCESS module in SPSS. Due to SPSS and PROCESS being limited in the imputation methods - being unable to handle multiple imputation - the other...

02 March 2021 4,362 1 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