Which is the appropriate statistic test to examine the relation between students' affective state and academic performance?

Which test should I use to compare students' mood effects on academic performance? I want to compare mood measured on a likert scale (from point 1= very sad to point= 5 very happy) to three...

04 February 2021 1,907 5 View

How can you derive a and n parameters of the Van Genuchten equation for horticultural mediums?

Dear all, I am trying to figure out how to derive and n parameters of the Van Genuchten equation for compost samples taken from an urban farm. RETC has predefined values for these parameters for...

26 January 2020 7,843 3 View

I am trying to form microspheres with PCL and PVA using a mechanical stirrer but the polymers keeps forming clumps. What do i do to disperse them?

I prepared a 1% PVA, and dissolved 500 mg of PCL in 5 ml of DCM. Then I introduced the PCL solution into PVA while stirring at 2000 rpm for 2 hours, after which i place it on magnetic stirrer to...

15 April 2019 7,177 4 View

Can normal colon cell lines form spheroids?

I am growing spheroids from HT29 colon cancer cells, and I need some sort of control cells to be compared with the HT29. Now, I should grow the control cell into spheroids and then use these new...

30 October 2018 3,719 12 View

Please, can I get a research paper or an article on lipid extraction from ogbono and egusi using chloroform-methanol method ?

I am working on a project that involves lipid extraction using chloroform-methanol as solvents. I washed the product with water-methanol and about to use a rotary evaporator for evaporation. But...

10 May 2018 4,089 3 View

What is the effect of differentating 3T3-L1 preadipocytes in differentiation cocktail for 3 versus 7 days?

I noticed that some protocols use differentiation media for 2-3 days while others go for 5-7 days before changing to maintenance media. Why is that? Is an adipocyte grown in DM 3 days + MM 4 days...

08 December 2017 1,792 1 View

How to calculate sample size for a moderation study?

Hi, I am doing a study design and planning to do a moderation study. This is the simplest model. However, I am struggling with the calculation of sample size. How do I calculate the sample size...

23 April 2017 5,449 8 View

I want to take for the first time CHO cells in culture. How can I get 100% sterile glass Erlenmeyer flasks to use them again in the cell culture?

29 November 2015 9,661 3 View

How do I design primers that will distinguish between highly homologous transcripts?

10 August 2014 4,948 4 View

How can I get my ligation to work?

I've been attempting to subclone an insert from one vector to another by PCR amplification with primers that incorporate XhoI/EcoRI sites at the ends of the insert and then digesting the insert...

30 July 2014 4,230 6 View

Looking for Materials with high thermal expansion coefficient and high temperature resistance?

03 March 2021 8,272 1 View

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 View

Waters 2707 HPLC autosampler problem?

I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...

02 March 2021 1,408 1 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

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

Does anyone know HRM channel in a 2 plex QIAGEN Rotor- Gene Q qPCR can be used as a separate channel?

I am going to have 3 different probes in my qPCR work that I am going to do. But I realized that the machine we have in the lab is a Rotor-Gene Q 2plex HRM Platform, saying it has green, yellow,...

01 March 2021 8,544 1 View

I have designed reflectarray element and feeding it though Horn Antenna on HFSS. After full wave simulation, I am not getting desired results?

I have designed reflectarray element to generate OAM beams at 5.8GHz and feeding it though Horn Antenna on HFSS. After full wave simulation, i am not getting desired results i.e Radiation pattern...

01 March 2021 9,701 5 View

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 1 View

Microstrip antenna design tutorial of HFSS 3D layout module ?

I have designed a 24 GHz rectangular antenna on HFSS 3D model and got desired results while desing the same antenna with same dimensions I am getting resonance frequency at 27 GHz I am...

28 February 2021 4,426 2 View

How long does it take to get a modeller(for homology modelling) license?

I submitted my e-mail address on modeller website to get a license. The problem is that, the site cannot process my school e-mail (ewhain.net). I submitted my Lab website and school name so that...

25 February 2021 9,054 3 View