What is the most suitable program for determine the state of synergesm, antagonism or addition of mixing two or more toxicants?

In a toxicology experiment the mixing pattern of two or more toxicants required for the physiological or lethal effect. what is the suitable program or equation that I can use?

06 January 2021 7,419 3 View

What are the conditions on projection operators in order to have optimal L^2 numerical estimates?

Mixed finite element methods employ numerical spaces that are, most of the time, something different than the full P^k spaces (polynomials with order up to k). For example, the BDM_k spaces for...

04 January 2021 2,009 2 View

What is the best way to use R to analyze keywords in articles ?

I would like to analyze the presence of certain keywords in several publications in order to appreciate how certain articles contribute to the achievement of the SDGs (The Sustainable Development...

16 October 2020 7,390 3 View

How can i measure traces of Hg2+ spectrophotometrecally, ?

I want to measure a low concentration of Hg2+ in a solution spectrophotometrically, ia there an indicator or something i can use as an indicator for Hg2+ to color it and make it easy to measure

14 September 2020 3,575 3 View

Jornal indexd with SCCI?

what is the best jornal indexed in SSCI and is free to punblish my ariticl about CSR?

19 July 2020 4,895 3 View

Expanding mouse T cells in serum-free medium?

Dear All, I would like to expand T cells in serum-free medium then inject without wash in mice? Is there is a special medium for that purpose? Thank you. Best, Hossam.

12 June 2020 6,112 4 View

How do I choose an appropriate statistical test in SPSS?

03 May 2020 1,018 3 View

How is triangulation used in qualitative data to validate results?

I just want to know your perception regarding the use of triangulation in qualitative research.

20 April 2020 4,441 8 View

How do you start a qualitative research question?

I just want to know what are your own practices in writing a qualitative research question.

10 April 2020 5,702 6 View

What is the reason why older students and teachers do not want e-learning in Arab countries?

What is the reason why older students and teachers do not want e-learning in Arab countries?

30 March 2020 7,545 14 View

Could the "incoming radiation (net radiation)" values be negative?

Could the "incoming solar radiation" values be negative? What is the difference between "global solar radiation" and "incoming solar radiation"? Which one might be measured negative values?

21 February 2021 7,726 9 View

Is the box plot of climatic indices better illustrate from daily data or annual data?

Hello, I hope you have a good time. I work on a research project about temperature indices. Due to the high number of indices, I only work on tables and maps on an annual time scale. In other...

19 February 2021 9,742 2 View

Spatial thinking and geographical reasoning: what are their conceptual differences and interrelations in teaching geography?

I am conducting a state-of-the-art analysis of these concepts. If you have contributions, please, send me.

17 January 2021 1,123 3 View

Nature will take care: How climate change problem will be fixed by nature without human interference?

Everyone knows, the fast changing climatic condition with altered physical factors due to various anthropologic activities. Humans are unable to handle the issue of climate change due to growing...

21 December 2020 9,283 14 View

Is there any chemical environment or parameters to define or explain the sediment and soil profiles, are they separated by chemical parameters?

Sediment is relatively younger than the soil in the depositional environment as the sediments are consequence of the accretion of particles transported either by waters or by winds, whereas, soil...

12 December 2020 4,822 18 View

Unlikely condition in the water inundation area after the cyclone?

I have done flood mapping with Sentinel 1 data for 3 districts of India (West Bengal) i.e. North Pargana, South pargana and East Medinipur. North and South Pargana are showing increasing trend in...

11 December 2020 4,714 3 View

How to do marking of reference year in urbanization up sprawl mapping ?

I am performing mapping of urban up sprawl for 5 cities in Pakistan using advanced geospatial methods with satellite imagery for 25 years (1995-2020) with a 5 year interval. Can someone enlighten...

19 October 2020 6,097 3 View

Do you agree with the just issued Great Barrington Declaration regarding the response to COVID-19?

The short and to-the-point text is here and I for one gladly co-signed this declaration, just as I also co-signed the balanced approach statement issued in July 2020 by 23 public health experts...

04 October 2020 8,795 11 View

How to calculate Aridity Index?

It's the measurement of degree of dryness but I'm bit confused with the values. Why is it lowest for hyperarid region and highest for sub-humid?

24 August 2020 8,920 11 View

I am keeping the Question for discussion, What is the role of Geography in the study of COVID-1 pandamic?

Please give your opinion and suggestions

10 August 2020 3,990 19 View