Evans Ehouman

28 Questions 48 Answers 0 Followers

Questions related from Evans Ehouman

How to explain Epi Info Population formula?

Dear, I am using EpiInfo to analysis survey data. However there some issues that I still do not know how to figure out. What is the formula used to compute the Population survey. I found one n =...

11 November 2019 2,094 2 View

How does one compute IC50 value?

How to compute IC50 value of a solution automatically I performed experimentation, determining the percentage of bacteria growth in presence of different plant extracts and at different...

08 August 2014 4,811 3 View

Which statistical analyzes choose?

I want to perform test about anti-tumoral activity of triple dozen of plant extracts, with reference compounds. I have been told that before doing anything, I better choose the statistical test...

06 June 2014 9,504 2 View

What is the appropriate procedure to publish your first research article?

I have finished the manuscript of a research paper in French, and I would like to publish in English. But have not targeted a publishing group yet. which one could I choose? Do you have any...

06 June 2014 9,046 4 View

What does the R square coefficient mean and why is there different value when computing with Excel?

Computing the correlation between the concentration of plants extracts and the inhibitory percentage, I used excel software. When I make the Logarithm graph, in dialogue box, it is asked me if I...

05 May 2014 1,609 15 View

Why are there so many different methodologies for the MTT test?

I want to carry out the MTT Test, but in the literature, there is no standard test. The methodologies vary a lot from one another. Some people talk about shaking before optical reading, some...

04 April 2014 10,037 0 View

In an MTT viability test, what is the concentration of plant extracts that should be used?

I would like to study anti proliferative activity of plant extracts using the MTT test. I wonder which concentration of plant extracts I should used. What parameters should I take into account to...

04 April 2014 2,357 4 View

Is there a way to determine the cytotoxicty of a substance after assessing its viability effect?

I want to carry out the MTT test to show the viability effect of plant extract on cells lines. Is there a way to reveal the cytotoxic effects of these same extracts?

04 April 2014 5,275 3 View

What are the more relevant tests for assessing the anticancer activity of medicinal plants?

Anticancer tests methodology.

03 March 2014 2,521 3 View

On a computer running Ubuntu 13.04 OS, how to perform an LHD Fisher/HSD statistical analyses with R?

Software procedures: Make ANOVA 1 Analysis data with R software. Find out "P" and "F" with values during an ANOVA 1 Analysis of experimental data.

01 January 2014 4,944 2 View

Where could I apply for presenting a research result ?

I want to apply for presenting a communication in a conference.

01 January 2014 5,675 3 View

Why do people use sometimes 'mL' rather than 'ml' in order to talk about milliliter ?

12 December 2013 7,642 19 View

Working on antioxidant properties of plants, what is useful to take into account : the Percentage of inhibition or the 50% inhibitory concentration?

50% inhibitory concentration of ABTS radical cation or percentage of inhibition.

11 November 2013 3,214 2 View

At the current state of research is it possible assert that oxidative stress is a causal factor of diabetes when glucouse overload is considered?

Researchers are looking for plants having anti diabetic properties. So they sometimes focus their studies on plants having antioxidant activities.

10 October 2013 8,633 4 View

Is it necessary to wash plant materials before making any microbiological test?

In a document of WHO on http://whqlibdoc.who.int/publications/2003/9241546271.pdf , they recommand to wash medicinal plants before air drying them. But most of the research articles that I find...

10 October 2013 9,375 8 View

In the human body, which form of iron is it better to have to prevent RO - reduced or oxidised?

ROs , iron, ferric ferrous

08 August 2013 9,586 0 View

What is the usefulness of making the ferric reducing antioxidant power test?

FRAP test And antioxidants plants

07 July 2013 6,101 2 View

The FRAP test is used to assess the antioxidant power of different materials. Why is it necessary to have iron into reduced form in the body?

Iron in the body, Ferric/ferrous

07 July 2013 2,463 1 View

How to set an English speaking group for PhD Student a a francophone country ?

I am a PhD Student in a Francophone University in Côte d'Ivoire (West Africa country). There, I am in charge of an English club dedicated to PhD student. It is more and more difficult to gather...

01 January 1970 210 0 View

How to make an ombrotermic curve with RStudio?

Hi dear, I am a new RStudio user. I would like, using ggplot graph an ombrothermic graph. On the same graphical, I would like to have Temperature with red line and precipitation with Histogram. Is...

01 January 1970 6,362 2 View

Is there any other web search engine for plants name apart from the world plant index Global Names Index beta I found out?

Looking for a world plant index, I found out Global Names Index beta that I really appreciate. I found almost all of the plants that I was looking for their spelling. I wish to know if there is...

01 January 1970 6,685 3 View

Is it possible to detect no difference in means with kruskal.test but find classification with LSD Fisher test?

I was conducting a statistical analysis with R. First of all, I checked the assumption of equality of normality, I found no equality : then checking the one of the variance, i found equality of...

01 January 1970 6,632 4 View

is it necessary to check assumption of normality of data prior performing ANOVA test?

When I was in undergraduate classes, I was advised to perform test of normality and equality of variance prior performing any test for means comparison (ANOVA) in the case of parametric test....

01 January 1970 7,734 6 View

What is the meaning of the apostroph (') in the shannon-Weaver index (H')?

Dear, I am interested in plant biodiversity. I am using Shannon-weaver or Shannon Index. I noticed that sometimes, it is added an apostrophe (H') and an other not (H). What is the meaning of this...

01 January 1970 3,895 1 View

How to interprete a Rstudio 2.4311 OR value?

Dear I am carry out a, experimental. I made an enquery and I am interested to know the variation of people infected by a disease according to their sex. I carried out a RStudio computing and I...

01 January 1970 8,720 1 View

How to run vegan package in RStudion Edition 2016?

Please, I need your help. I am using RStudio version Version 0.99.893 I would like to use the Vegan package. But each time I the run thescript, i have the following message : > library(vegan)...

01 January 1970 1,177 3 View

Can anyone help me to establish a TWINSPAN classification?

I am looking for tool to established among different sites what are the common plant species that these site have in common. I hear about TWINSPAN. Is there any free software dealing with this...

01 January 1970 7,616 1 View

Is there any web data base to have life form of plant from west Africa ?

Dear, I am interested in life form of plant that I recently collected in the frame of a field work. I use a Data base called Boissiera and the : theplantlist.org to check plants' names and life...

01 January 1970 2,474 1 View