What is the Commercial purification method for Levulinic Acid?

Levulinic acid produced from wheat straw biomass through acid (HCl) catalysed hydrolysis. Please suggest an economical and commercial method for the purification of levulinic acid.

23 September 2020 4,976 1 View

I would like to conduct a research on the Impact of Facebook usage to the Character Building of Grade 10. What question/s do you suggest?

The study will be conducted to grade 10 students in the Philippines

17 July 2019 2,788 3 View

How extract information of molecular chains from .xtc file (gromacs)?

I barely discover Gromacs and I have to use it to study trajectory results, so I wanted to know if it was possible from an xtc file to generate several xtc files, one for each chain of the...

25 March 2019 2,945 5 View

No title

23 October 2016 5,023 3 View

Due to the drastic price reduction of PV modules, do you think high concentration PV systems are still cost-effective?

The price of PVmodule in about 15 years is 1/10, whereas the price of PV systems is halved [1], it implies that the impact of PV modules on the cost of the whole systems is decreasing more and...

08 November 2013 5,020 4 View

Does anyone have experience with XLSTAT Tukey test (one-way ANOVA results)?

Any reason why there is inconsistency between significant table (contrast) and grouping table (category) in the Tukey test?

02 September 2013 1,666 8 View

Is the reactivity of a functional group affected by the type of molecule that carries it?

Is there a possibility to predict or estimate the reactivity of an epoxy functional group, by means of a comparison whether it is bond to aromatic or aliphatic molecules, respectively?

30 August 2013 8,831 10 View

Protoplast storage conditions

Does anyone have an idea if maize protoplasts could be stored? If yes, do you know the conditions and the efficiency of the protoplast after storage?

11 July 2013 8,671 1 View

Opinions on the morphological changes of these cells.

These cells are from an osteosarcoma cell line. They have been treated with a chemotherapeutic agent for 72 hours in a Co2 incubator at a concentration which has been found to induce apoptosis and...

31 January 2013 8,336 26 View

How can I get an even spread of cells in a 24 well plate?

Does anyone else have an issue with evenly spreading cells in a 24 well plate? No matter how careful I am, the cells (MG-63) huddle mostly in the middle of the well in the outside wells of the...

20 November 2012 3,913 31 View

Sample dilution for quantitative analysis using ELISA?

If the detection range is in ng/ml but the reference range is in ug/ml for a molecule or protein in serum or plasma .how to dilute and what is the initial volume to be taken for quantitative analysis

02 March 2021 7,670 3 View

Does anyone know how to plot my station to a section plot on Ocean Data View (ODV)?

I made a vertical section plot with WOA .nc file on ODV, and now I want to plot my stations (csv. file) in it. Does anyone know how to import my points to the section? They are two different...

01 March 2021 3,610 1 View

Does anyone know an alternative product for cardiac Troponin T antibody for Immunofluorescence (Thermo # MA512960)?

We have been using Thermo Fisher anti-cardiac Troponin T antibody for immunofluorescence staining in FFPE mouse heart sections but it was recently discontinued. The literature shows it to be the...

01 March 2021 4,937 1 View

How to assign different material properties to each element in Abaqus ?

Hello, I am writing a python script to generate my model and write the input file. The problem is I have 1000 elements in my mesh and I want to assign different material properties to each...

01 March 2021 9,511 3 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

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

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

IF troubleshooting: looking at an intracellular protein that localizes to the cell's and how to reduce increase in signal due to cell ruffles?

I am currently trying to stain for PI3KBeta in MDA-MB-231 cells. My current issue is that 1) beta stains all over the cell and 2) there is an increase in signal at the edge of the cell and this...

24 February 2021 8,582 1 View

Is it efficient to do liquid biopsy to investigate the gene expressions of the tumor?

To do liquid biopsy and look for specific gene expressions there are so many published papers. Thera are different protocols and procedures used to isolate circulating cell free RNA or mRNA from...

23 February 2021 7,326 5 View

Which microtomy technique do you suggest for thin and delicate root sectioning ?And, how to preserve and process the roots before sectioning?

We have thin roots of from 1 year old different species of plants. We are looking into anatomical details of the roots. What's the best method to preserve and process the roots once they are...

23 February 2021 1,898 1 View