How should I compute a new variable with z-scores?

I would like to create a new variable using 4 different measures: hIndex (range: 1-47), # of publications (range: 0-111), and 2 other measures (range: 1-7). I changed all of these variables into...

09 February 2021 4,866 3 View

How can you confirm new liquid FTIR cell fits calibration?

We have an FTIR instrument which was calibrated in transmission/absorption mode using a set of cells for different ranges of D2O concentration. One of the cells at high range broke and the new one...

16 January 2021 4,791 2 View

NMR-SIM not installed on TopSpin 3.6.2?

I have recently installed TopSpin 3.6.2 in a Windows 10 where I had already TopSpin 3.6.1 working correctly. After several attempts in installing and uninstalling I am still unable to use NMR-SIM....

18 November 2020 1,688 2 View

Is there any possibalities of PDMS coating on Biochar Powder?

Hello, I'm doing a research regarding gas adsorption on hydrophoobic biochar. Is there any way to coat PDMS on the biochar powder?

05 October 2020 5,610 1 View

Would you indicate treatment by intralesional injection for bone metastasis?

Hello people! I would like to understand if oncologists and doctors in general would be interested and indicate treatment for bone metastasis originating in breast cancer, ER +, PR +, HER-2 - with...

14 September 2019 4,322 3 View

Is my new measure "more valid" than existing measures?

How do I determine whether a new measure I'm developing is "more valid" than existing measures of the same construct? I'm proposing to develop a new measure that is more inclusive of the...

15 May 2019 9,893 4 View

DGGE. Does anyone have had problems with the separation of fungal bands on acrylamide gels?

24 October 2018 8,251 6 View

DGGE. Does anyone have had problems with the separation of fungal bands on acrylamide gels?

09 October 2018 8,651 7 View

qPCR melt curve peak doesn't correspond to gel, why?

I'm having an issue with non specific binding of my primers. I've tried many primers and this is the least messy primer pair but I am still getting a second melt curve peak when doing serial...

19 September 2018 3,940 3 View

Recommendation for molarity of Citrate buffer to use with C2C12 myotubes?

I am planning an experiment using TTX on C2C12 myotubes. The TTX should be reconstituted in citrate buffer pH4.8. I am now trying to find out which molarity of citrate buffer can be used for C2C12...

05 July 2018 2,754 1 View

Can we distinguish the type of free fluid inside the pelvic and abdominal cavities whether blood or serous fluid using the ultrasound?

during ultrasound examination of acute abdomen, sometimes we see free fluid , can we know the type of fluid ,whether blood or not , using ultrasound only? if yes , what are the sonographic...

01 March 2021 7,476 4 View

Can anyone help me with the administration of the "Mind the Gap" Scale for satisfaction with transition to adult care?

We are working on a study focused on adolescents' transition to adult care and are looking for a validated measure for satisfaction with the transition. So far the only measure that we have came...

28 February 2021 2,338 1 View

How to calculate Ligand-active site distance in a ligand-protein complex from MD simulation?

I have run a MD simulation of a ligand-protein complex in GROMACS using CHARMM forcefield. Reviewer has asked me to calculate Ligand-activesite distance and binding free energy of ligand with...

27 February 2021 4,703 1 View

Is there an open source free software for text mining and sentiment analysis?

I am looking for a free software for text mining and sentiment analysis for my research on customer review mining (it involves calculating polarity of attributes,opinion oriented information...

25 February 2021 1,920 6 View

Which are the journals for free paper publication?

A bunch of flower for everybody. I would like to ask about the list of journals which we can publish our paper for free. Thanks in advance. Sincerely Walid

25 February 2021 9,790 3 View

Suggestions for occupational stress surveys?

I am currently writing a masters thesis on reasons for occupational stress in the early childhood classroom, and want to include a short survey assessing participants work-related stress levels. I...

24 February 2021 8,678 2 View

Is it efficient to do liquid biopsy to investigate the gene expressions of the tumor?

To do liquid biopsy and look for specific gene expressions there are so many published papers. Thera are different protocols and procedures used to isolate circulating cell free RNA or mRNA from...

23 February 2021 7,326 5 View

Hello, does any one know a free medical text dataset?

a free multi label clinical text dataset , containing text as entry and several labels as classes. Best regards

22 February 2021 5,988 2 View

Protocol for membrane extraction E. coli?

Hello! I am interested in determining whether a poly-unsaturated fatty acid I have engineered E. coli to produce is being incorporated into the membrane of the cells or if it is simply a free...

21 February 2021 7,447 2 View

Can anyone recommend which is the best free questionnaire software please?

Hello, I am looking to send out links to an online survey. My previous research project used a paid for survey software. I am now looking for something that's free but straight forward to...

19 February 2021 5,641 3 View