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

How to define and get results (stresses) for certain points of a model in abaqus, using python? When the size of the model changes?

I want to do a parameter study of a aixsymmetric cylinder in Abaqus. I want to create several jobs where I get the stresses for 3 different points in my model. These points are defined. I wrote a...

01 March 2021 10,078 1 View

LOAD DISPLACEMENT CURVES Stiffness increasing in ANSYS non linear analysis. HOW CAN I CORRECT IT?

Hi. I am doing non linear FE analysis using a new material beam under flexural 2 point loading using ANSYS. I have defined a bilinear material model. The solution has converged. In results I am...

01 March 2021 9,911 3 View

Joint behaviour in Abaqus is not captured well?

I am working on roof joint and trying to simulate the behaviour in Abaqus. I am successful in running the model but the final graph does not follow the experimental curve in the negative direction...

01 March 2021 6,661 3 View

Concrete compressive strength databases?

I am looking for datasets similar to this one: http://archive.ics.uci.edu/ml/datasets/Concrete+Compressive+Strength I am looking for concretes with different types of aggregates (Recycled,...

27 February 2021 6,801 3 View

How relevant is Mini slump cone?

for all the rheology researchers, my question is, how relevant is a mini slump cone (smaller than a standard 50 cent rheometer). currently based on testing, the thickness of slumped material is...

26 February 2021 3,668 1 View

Stress/strain tensors decomposition ???

25 February 2021 6,760 1 View

How to reduce residual stresses in MD simulation?

I am working on a preparation of representative polymeric structures of some popular polymers, such as polyimide or PTFE for MD simulation, during which a single nitrogen or oxygen atom will be...

24 February 2021 8,105 3 View

Suggestions for occupational stress surveys?

I am currently writing a masters thesis on reasons for occupational stress in the early childhood classroom, and want to include a short survey assessing participants work-related stress levels. I...

24 February 2021 8,678 2 View

What are effects of steel jacketing on flexural strength?

Dear all, If steel jacketing is used to retrofit a reinforced-concrete (RC) column, can we use it to improve flexural strength? I understand that we leave gaps between the ends of the jacket and...

22 February 2021 1,906 5 View

The most suitable method to calculate the stress intensity factor in the presence of contact between the crack lips?

I'm trying to study cracked structures under a compressive load taking into account contact between the crack lips. I would like to know if the method of extrapolation by displacement remains...

21 February 2021 8,694 4 View