Composition of HEPES buffer solution?

Hi All, I want to make HEPES buffer solution and when I search for the composition I could find two different types of it. Can anyone help me which one is the correct method of HEPES...

08 September 2020 450 4 View

Why my HaCaT cells die after thawed?

I tried to thaw my HaCaT cells several times but 99% of them died. They were frozen with 10% DMSO + 10% FBS + 80% DMEM. I also tried 10% DMSO + 90% FBS then they died less but still only 10-20%...

18 October 2019 1,762 2 View

What could be the factors for unreasonably high heat capacity values from DSC measurements?

I have been running DSC for porous materials but the results I got were quite ridiculous. For the solid porous materials, I obtained heat capacity above that of water, which I cannot reason at...

20 September 2019 2,211 3 View

Do you have training courses to make models for my thesis on climate change and food security in Senegal?

Currently I am a student in Master II at the Faculty of Economics and Management of the University Cheikh Anta Diop Dakar.I finish this higher level with a dissertation whose theme is "the impacts...

01 June 2018 8,422 4 View

Seaweed water content.

08 June 2017 5,789 3 View

How can I prepare an optimal nanoparticles suspension?

13 March 2017 2,927 3 View

POWER: For a longitudinal developmental study with 3 time-points, in order to discriminate between trajectories, what is the minimal sample size?

The study is designed to measure executive function in children in 3 consecutive years. The children will come into the lab annually with their parent. Since executive function is itself a highly...

04 October 2015 7,297 3 View

Does anyone have an answer and references materials on the cause of a short term rise in bottom hole pressure in an injection well?

The bottom hole pressure rise in injection wells.

11 August 2014 5,633 2 View

Could you please help me provide a reference that support the ability to use both instruments in such type of research?

Hi everyone My research examines the effect of using videos on English idiom learning. So, it is regarded a scientific research which means that i should use tests as research instrument....

01 January 1970 1,649 2 View

I really need your help

Could u plz help me in determining variables or criteria that should I depend on in analysing the following questionnaire since I can not analyse and discuss each items separately? Also, all the...

01 January 1970 3,679 4 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

No title

Hi, I have several doubts about one paper (Systematic Literature Review) that was rejected. The main topic is Single-Board Computers in engineering education during the period 2010-2020. The...

01 March 2021 9,015 3 View

Which software is better to write systematic review paper?

We have seen some authors use some software to write review paper. As obvious, the study of all published papers concerning our studying field is not possible and these software can help us to...

27 February 2021 6,296 1 View

Centrality measures computation in Biblioshiny/ Vosviewer?

26 February 2021 7,279 2 View

When to use different framework?

Hi, can I use both conceptual framework and theoretical framework in my systematic review? My future study plan is to use a theory. In this situation for my systematic review should I use both or...

18 February 2021 9,581 2 View

Do you know of an informal caregiver of a person who has recently received a bone marrow transplant?

We are conducting a pilot study of an intervention for informal caregivers of persons who have recently received a bone marrow transplant in the US. If you know of anyone who might be interested,...

13 February 2021 9,174 1 View

Can we have constructs of Cronbach alpha value with more than 0.9 in social science research? What is recommended in this problem?

My study consists of a conceptual framework with seven constructs measured in seven point Likert scale. According to pilot study, only three constructs have Cronbach alpha value more than 0.9...

12 February 2021 9,368 2 View

Do you know any reporting tool, guidelines for credibility assessment tool used for studies/publications with Artificial Intelligence?

I want to conduct a Systematic Review and assess the quality of methods used/proposed by researchers. I found out that scientists often utilize QUADAS for that...

05 February 2021 8,743 5 View

What will be the possible analysis plan for descriptive outcome?

Hi everyone I am busy with a Systematic review. Unfortunately, my protocol has been returned back because of my analysis plan that will not answer my question. Can you please advise on the...

02 February 2021 6,190 2 View

Can I use the result from a pilot study to decide the minimum sample size ?

Can I use the result from a pilot study to decide the minimum sample size required to compare the means using independent sample t-test ? Or any other way that can help me to determine the...

29 January 2021 7,677 6 View