How to extract polysaccharids from Aloe gel?

I 'm trying to extract polysacharides from Aloe leaf and tried ethanol percipitation, but after getting the pellet. I used the protocol from following reference following the steps, but I don't...

27 January 2021 7,049 5 View

How to visualise a journal issue?

Dear all, One of my friends is a editor in chief of a geospatial journal and he asked me to visualise the recent issue of the journal for publishing on the journal website. I have some ideas, for...

22 July 2020 6,275 4 View

Is it important the order of authors on scientific papers to apply for academic jobs?

Dear All, I have searched on the internet and read different pages with different views. If I want to summarize my investigations I can say that: Number of scientific papers which an applicant is...

21 November 2019 2,591 9 View

What are the recent HRM topics for research? And is research in change management field feasible if literature is there from quality journals?

Recent HRM topics for research

15 August 2019 1,286 10 View

Why AMOVA test is not active in Arlequin?

I entered the data to Arlequin and under Genetic structure, the AMOVA option is not active, is this related to input data? The other options are active and will run the analysis. I enclosed the file.

15 August 2019 4,564 4 View

How to interpret Stacks output?

10 July 2019 5,938 2 View

Is it necessary to perform Global Moran's before Local Moran's?

Dear All, I think the question is clear. Is it necessary to perform Global Moran's statistic before Anselin Local Moran's I to measure spatial autocorrelation? I mean is it true that always we...

10 June 2019 8,700 7 View

How to characterize insecticide resistance mechanism?

I have a question about investigating insecticide ( Neonicoitnoids) resistance mechanism. We have populations of insects that are resistant and susceptible to insecticide, and we are interested...

16 August 2018 8,782 2 View

Could you someone suggest the best book about principal of internal combustion engine?

06 March 2016 4,795 10 View

How do I simulate a WDCN based on 60 GHz wireless RF technology in MATLAB?

10 December 2015 7,475 1 View

Heat exchanger with liquid Nitrogen as coolant?

I want to cool Natural Gas from 195 Kelvin to 138 Klevin in a heat exchanger by using liquid nitrogen as the coolant medium. When entering the heat exchanger, the liquid nitrogen will have a...

01 March 2021 6,450 5 View

can I treat waste water containing solvents and alcohol with electrocoagulation?

there are solvents and alcohol in the waste water of a factory that produces disinfectants. Increasing this waste water requires very serious operations. Can I treat this waste water with...

27 February 2021 2,609 3 View

Why do a weight decrease for thermal degradation in nitrogen gas condition?

Hi all The question is related to TGA(Thermogravimetric analysis). Thermal degradation easily understood but why do samples weight decrease? altough just binding is broked, the weight of...

26 February 2021 1,100 5 View

How to increase solubility of Poly acrylic acid in Dioxane solvent?

I am working with Polyacrylic acid (100.000Da) and instead of water, I need to use another solvent (dioxane) to dissolve PAA. However, because of the high molecular weight, it's quite hard to...

25 February 2021 2,225 5 View

How vulnerable is water and wastewater infrastructure to cyber terrorism in an age of IoT?

Im looking for any papers, reports,articles, links etc on information on How vulnerable is water and wastewater infrastructure to cyber terrorism in an age of IoT.

24 February 2021 2,750 4 View

Steps to calculate activation energy by coats & redfern method?

I'm a chemistry student and I'm researching the kinetic degradation of mixed plastic waste. I'm having trouble calculating the activation energy by the coats & Redfern method. The data that...

24 February 2021 974 1 View

How to perform Kaplan-meier survival analysis in SPSS?

Hi everyone, This is my first time of attempting to run survival analysis. I have a data on patients with End-stage Kidney Diseases (ESKD). I would want to run survival probability by treatment...

16 February 2021 2,647 3 View

How much costs direct reduction of nitrogen on farmland in terms of lower crop yield?

Dear research fellows, I wonder if someone knows how much direct reduction of nitrogen on farmland costs in terms of lower crop yield expressed as EUR/kg nitrogen (or similar)? I understand that...

15 February 2021 1,323 3 View

Are there alternatives to the Devarda alloy when estimating nitrogen?

Are there alternatives to the Devarda alloy when estimating nitrogen? devarda alloy is reducing the nitrate to ammonium

15 February 2021 8,838 3 View

About XRD details of pristine and doped RGO?

Hi Can anyone please help me know the XRD details of reduced graphene oxide, Nitrogen doped reduced graphene oxide, Sulphur doped reduced graphene oxide, Nitrogen and Sulphur co-doped reduced...

08 February 2021 3,033 3 View