I need some suggestions for the determination of total nitrogen in biomass/ solid samples.
Could you please provide me any procedure for nitrogen analysis with Vario TOC cube?
I want to model the following: DV: Y at time 3 IVs: X at time 1, X at time 2, change of X from time 1 to time 2 Which is the most appropriate way (preferably in SPSS). I am afraid I cannot use...
10 December 2020 264 3 View
Dear researcher, I need to compare different linear mixed-effects models. I use the same data set. Sometimes the corporation is between two positive and negative AIC. I do not know if that...
12 November 2020 3,253 6 View
Hi. I have slight experience in searching phylogenetic trees, normaly I use TreeBASE or Dryad but some papers that I found doesn't have the resulting trees in these databases or there are genetic...
26 October 2020 582 3 View
I am preparing reduced graphene oxide by using plant extracts...I was thinking if I could use TLC (in addition to UV and IR) to detect the reduction reaction by the increase of hydrophobicity...
24 August 2020 9,644 6 View
Hello all, I hope you can help me with these questions. I am developing a mediation analysis using the mediation package in R. I need to analyze the influence of perceived learning (Mediating...
18 August 2020 7,521 9 View
Due to the lack of access to my university's laboratories and equipment I'm exploring the efficiency of FTIR in the characterisation of bone samples from reviewing literature as opposed to...
15 July 2020 2,017 1 View
I'm currently working on ecotoxicology and I'd like to know what my colleagues from the same area think, especially in South America. Too much of microplastics in my opinion, but few studies...
18 May 2020 1,064 2 View
I've been running an analysis for Pb with 5 standards, blank and a CRM; the results have had extremely poor linearity (i.e. standard 1 is a positive, standard 2 is a low negative number, and so...
31 March 2020 8,307 7 View
I am not an epidemiologist, nor am I studying epidemiology, this is a question born of sheer curiosity due to current events. I understand (more or less) the principle behind the basic...
19 March 2020 9,458 3 View
hallo every one, i need a protocol to measure glucose production in HepG2 cells, actually I need a detailed Protocol that I can based on as a starting point for my research, thank you in advance,
10 March 2020 4,620 4 View
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
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
Hi everyone How to model Supercritical water gasification (SCWG) process in Homer software?
25 February 2021 4,075 1 View
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
Hi every one Is it possible to define biogas as a fuel in the reformer process(scwg) in Homer software? Biogas fuel is not available in the options thanks
23 February 2021 6,518 3 View
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? devarda alloy is reducing the nitrate to ammonium
15 February 2021 8,838 3 View
Activated carbon is prepared from biomass using KOH as the activating agent. What is the possible reaction between KOH and the biomass?
14 February 2021 8,095 4 View
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
What is differentiate between these two states? And what's the reason for formation of these charge states?
26 January 2021 6,937 3 View