29 Questions 101 Answers 0 Followers
Questions related from Clement O. Ogunkunle
Apart from the endocrine distruption of PAE in humans, does it have any toxic effect on plant tissues? I would also appreciate if some can provide a brief protocol to determine PAE content in...
12 December 2017 6,324 0 View
I have noticed that some requests for scholarly articles from colleagues on RG and some by private emails (though published mostly not on open access status), are always turned down stating that...
10 October 2017 3,175 4 View
I have two XRD patterns of Cu nanoparticles of different sizes (
08 August 2017 9,041 18 View
Does PCA actually make sense, if you can get two different answers for the same data set using either the covariance or correlation matrix, when both matrices are trying to achieve the same goal? ...
06 June 2017 4,747 9 View
Please colleagues, I need to know how to convert the measure of enzyme activities in plants (Ascorbate peroxidase and Glutathione reductase) from the SI unit of U/L to umol/L. I found that most...
06 June 2017 988 2 View
Firstly, I want to know the role of carbon black in soil restoration, perhaps it is effective in soil conditioning (fertility increase etc). Also, i would like to know if there is any empirical...
01 January 2017 9,347 13 View
I want to know the precise range of particle sizes that are considered appropriate when determining total and bio-available metal concentrations in agricultural soils. I understand most scholarly...
01 January 2016 9,085 16 View
I want to determine the activity of extractable Cu (pCu2+) and Pb (pPb2+) in the soil to evaluate their toxicity potential after some period of aging. Can someone provide a detail protocol to go...
11 November 2015 6,113 5 View
Recently in developing countries, there have been series of debate on the measure of productivity of researchers/academics. Many advocate the use of metric method like impact factor of...
06 June 2015 1,170 1 View
I want to know the main differences between canonical correspondence and Detrended correspondence in term of their applications to data in statistics.
06 June 2015 2,408 0 View
I want to choose some commercially manufactured biochars as soil amendment to immobilized heavy metal. The biochars are already characterized. I want to know what features are important to be...
03 March 2015 3,627 5 View
I want to reduce metal contents of soil by introducing certain microbes in order to precipitate out metals and quantify. But I dont know how to go about it. Can someone help me out!!!!
12 December 2014 5,193 6 View
Has anyone worked on nanoparticles using either X-ray absorption near edge structure (XANES) or Synchrotron radiation? I would appreciate an enlightenment on better techniques out of the two to...
11 November 2014 6,011 6 View
I have some ecological data and after checking for Normality, found out that there are outliers which need to be removed. But I want to ask if the removal of the outlier values and subsequent...
10 October 2014 6,860 19 View
I intend to find the toxicity potential of certain metal nanoparticles on plant metabolism. Is it important to analyze the purity of the nanoparticle especially by XRD before use or not? What is...
09 September 2014 9,135 17 View
I want to know if nano-particles like nanosilver can be quantified in samples exposed. And if it is possible, what is the technology and procedures?
09 September 2014 5,950 7 View
I want to know the difference in the application of Scanning electron microscopy and Transmission electron microscopy. I intend using either of these applications to view plant matrix for...
09 September 2014 5,243 16 View
Recently, there has been much discussion on so-called predatory journals that post untrue information about their journal on their website. Many claim they are in America and publish in America....
12 December 2013 3,588 2 View
There seems to be a standard range of the level of organic matter in the soil in order to refer to a soil as fertile. For instance, according to Metson (1961) as adapted from Booker Tropical Soil...
06 June 2013 2,579 14 View
I think using a part of your already published work should not be an issue without referencing it since the work belonged to you in the first instance. Why must it be referenced? Referencing...
06 June 2013 4,075 39 View
There is a recent report that cockroaches are now refusing eating poison-laden food, specially containing-sugar substrates. And the explanation was that they have developed a kind of genetic...
05 May 2013 5,864 4 View
I want to know which is better for decomposition of matrix before Spectrophotometry analysis between dry ashing and wet ashing of samples.
04 April 2013 8,617 12 View
Uptake and transfer of heavy metals by plants are often dependent on the soil pH, organic matter, CEC etc. Do you think root mycorrhiza of plants have roles to play too?
04 April 2013 3,594 1 View
I need some authentic procedures for the determination of PAH in soil and plant samples, possibly some recent referenced methodologies.
03 March 2013 6,659 4 View
I once used the Inverse Distance Weighted (IDW) technique in Arc GIS 10 to depict the spread of metal depositions around a factory. But in all the similar works I have reviewed, they all used...
02 February 2013 1,436 1 View
Is the effect of allelopathy of phanerophytes on ephemerals and other chaemeophyes always negative? Can't the effects be advantageous to other biotic components?
12 December 2012 8,099 7 View
I understand that pH is a factor in metal speciation but does the grain size of soil particles have any influence in speciation of metal like Cr into Cr(III) and Cr(VI) because this dictate stheir...
12 December 2012 3,499 5 View
Just discovered that tomatoes have the potential to accumulate more Zn from soil contents than other vegetables like amaranth, even at reduced soil Zn contents.
11 November 2012 6,067 2 View
I understand that variogram can be employed to describe the geochemistry of soil in a large area, possibly regional. Can this variogram can be used for localized polluted areas, like industrial...
10 October 2012 3,083 6 View
