What are the main problems associated with LDPE recycling or valorization compared to other polymers such as HDPE and PET?

In most developing countries like Nigeria, low to medium-income earners consume packaged water coming from sachet water. Sachet water is made from LDPE. I am looking at each packaging holistically...

13 October 2020 5,044 3 View

Negative Lift from flow over a vane using profile inlet boundary condition?

I did an analysis in fluent for a flow over vanes with a constant inlet boundary condition (Mass flowrate). With this, I got positive lift, drag and moment. Thereafter, I perform the analysis...

23 August 2019 4,937 1 View

QPCR contamination - how to solve my problem?

I am having a terrible time with qPCR contamination on fish genes. I have ordered new primers, only used filter tips, sprayed my pipettes and work area with 10% bleach , tried to complete inside a...

18 September 2018 4,572 3 View

How do you decide what species to include in phylogenetic tree for paml positive selection analysis?

Hi, I am trying to test if one copy of a duplicated gene is under positive selection in 1 particular fish species. The other copy of the duplicated gene has been observed to be under positive...

04 September 2018 1,489 1 View

How do I define a non constant (velocity profile) inlet boundary condition in fluent simulation?

I am simulating flow over vanes and the air flow is from a propeller which the flow velocity varies across the length of the prop. The velocity is zero at the tip then increases to maximum at the...

09 August 2018 6,083 2 View

CFD convergence problem: My simulation monitored parameters does not converge completely. Can anyone tell me why?

In my simulation of analyzing the effect of vane deflection of air pushed by a propeller in a shroud, I set up some variables (like cd, cl, force, moment) to monitor. After running up to 10000...

20 March 2018 7,771 4 View

I have been performing simultaneous TGA/DSC runs on a polymer. I am getting a 60% mass loss but no exo/endothermic reaction to accompany. Any ideas?

The reaction takes place routinely at 550C with no change in energy. Has anyone experienced this before?

18 December 2017 4,207 13 View

Can I reuse primary and secondary antibodies for immunohistochemistry?

In a lab I rotated in, we always reused primary antibody but never reused secondary. In the lab I've chosen to remain in, it is considered okay to reuse secondary antibodies. I am a bit hesitant...

27 September 2017 3,822 7 View

Literature on Knowledge Management in Educational Institutions

Hi all, I'm currently working on my dissertation and I'm looking for more leads on different journals, books, websites on knowledge management in educational institutions. Your help will be...

01 January 1970 4,599 3 View

What is the clear distinction between cac and cmc as used interchangeably in polymer/surfactant systems?

01 January 1970 606 2 View

Do we need to write protocol for a second study of a systematic review that has been registered and published?

I have conducted and published a systematic review and meta-analysis research with the topic related to public health and health pomotion (protocol was registed in PROSPERO). Now we want to...

03 March 2021 8,920 3 View

Ideas for Phd's Thesis on pricing (Marketing)?

Hi everyone, I'm studying Marketing and I would like to write my PhD thesis on the topic of pricing. Any specific ideas?

02 March 2021 9,706 5 View

Good sites to recruit survey participants on a grad school student budget?

Any good recommendations for participant recruitment for online surveys on a grad school student budget?

02 March 2021 4,293 4 View

How to write a scientific report?

We are analysing scientific reports at University in great detail, so I wanted to find a scientific report about how to write a scientific report. Including detail such as what information to put...

02 March 2021 7,602 4 View

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

Which is a lucid standard comprehensive book to guide on psychological scale construction and its standardization?

02 March 2021 7,082 3 View

Could any one guide me, to write research proposal for grant? ?

We have one plant, the local people using this for controlling blood sugar, the toxicity and antidiabetic activity of the plant is not reported yet, please guide from whag should be the process ?...

02 March 2021 2,300 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

Energy minimization in LAMMPS using NVT ?

How do I do energy minimization in lammps with NVT ensemble ? I am using the following command and it does not seem to work. It stops at extremely high energy and gives me the error zero search...

01 March 2021 2,294 3 View

No title

01 March 2021 3,905 5 View