What is the top ten scientific journals in the world, and how quality is evaluated?

Do quality is evaluated just depends on the impact factor (IF)? what is the greatest number of the IF?

18 July 2020 6,135 44 View

What is the main reason of global warming? Do CO2 is responsible only? Do wildfire an auto event?

The average temperature of the Earth is rising at nearly twice the rate it was 50 years ago. This rapid warming trend cannot be explained by natural cycles alone, scientists have concluded. The...

08 June 2020 3,764 38 View

Transfection_large plasmid_HEK cells?

Does anyone have any experience with transfecting 12Kb plasmid in HEK cell line using jet prime?

07 November 2019 1,450 3 View

Who can help me by giving some lectures about Agriculture projects?

I really need to some lectures are relationship to agriculture projects, it will be by PPT, PDF and any thing.

03 October 2019 766 5 View

How to get data from a tree node for wavelet package in matlab?

I use the function (wpdec2) in wavelet packet

28 April 2019 1,672 2 View

Do I have the appropriate sonicator?

I am following the catalyst preparation procedure expressed in the attached paper [Applied Catalysis B: Environmental 239 (2018) 280-289]. The procedure requires sonicating

14 October 2018 8,513 2 View

Can I use the enzyme 6PGD Kit that purified from mice for determination the 6PGD in human?

Estimation of enzyme activity

14 August 2018 3,460 2 View

What are the major problems related to computer networks to simulate and resolve by using OPNET

OPNET Simulator , I need a problem to make a PhD proposal by using OPNET please?

31 July 2017 2,558 2 View

Hello How to get a producer to dissolve cellulose fiber by carbon disulfide ?

11 April 2017 9,899 2 View

Hi Everyone. i wanted to ask about extraction of proteins from cell lines for SDS PAGE and further western blotting?

I take the cells trypsinize the cells and wash them with cold PBS two times. Then i use RIPA lysis buffer according to the pellet and add protease inhibitors 1/20th volume of lysis buffer. Pipet...

16 March 2017 3,517 2 View

What is the best way to keep an anaerobic chamber anoxic in the absence of hydrogen?

I'm a graduate student who works with an anaerobe, so I often work in an anaerobic chamber. I've been working on an assay that involves the steady-state of the quinone/ quinol pool. Anoxic...

03 March 2021 2,971 1 View

Good sites to recruit survey participants on a grad school student budget?

Any good recommendations for participant recruitment for online surveys on a grad school student budget?

02 March 2021 4,293 4 View

Is there a recitation score bank system for fair evaluation and assessment of student recitation?

In actual and virtual class, even if there is rubric for recitation, students may still fail to receive fair grades or scores. Others are active in recitation and others are not or others may fail...

26 February 2021 8,387 3 View

Do you think there is cognitive oversaturation in the current pandemic? What impact can this have? And other manifestations?

Dear colleagues, Do you think there is cognitive oversaturation in the current pandemic? What impact can this have? And other manifestations? The question is mainly aimed at adolescents (pupils,...

23 February 2021 7,796 4 View

Must a control group to be in the same semester that a experimental group for a study in education?

Hi everyone, I'm researching about mobile learning in higher education. Due to the small number of the students in the semesters, I cannot have a experimental and control group together. I'm...

22 February 2021 3,653 11 View

Latent profile analysis based on two variables/sources of data?

Hello, for my master project, I would like to conduct a latent profile analysis about self-regulated learning skills. I would like to take two different measures into account when creating the...

21 February 2021 2,326 3 View

Where can I find raw quantitative datasets on ecosystem services?

I'm an Undergraduate student on the search for a research topic which has to involve any ecosystem service(s) and a response to environmental change. I'm looking for raw quantitative data sets (I...

19 February 2021 5,911 2 View

Person-Codes for questionnaires in longitudinal studies: Is there an easy solution for better matching-rates?

Hi, I have a problem regarding matching of longitudinal data in my field of research (university students). We have a Person-Code for matching data measured in different time points, but 30%+ of...

17 February 2021 3,075 4 View

Level 1 pre-post multilevel regression: Panel data or ANOVA approach?

Dear colleagues, I am currently teaching myself in multilevel analysis using educational data. I found few to zero literature on basic analysis methods. In my context we frequently use level-1...

17 February 2021 9,378 5 View

What are the available keys and descriptions for the identification of lice and fleas in domesticated animals?

I am an undergraduate student at the University of Peradeniya Sri Lanka, currently working on ecto-parasites in domesticated animals. I found difficulties in the identification due to a lack of a...

15 February 2021 277 1 View