I found out there an instrument to measure the water potential HR-33T with psychrometers and as I am not so familiar with it, could someone please guide me in their experience to make some measurements of soil water potential.
Hello. I have a skewed elliptical coordinate system (I use alternative elliptical coordinates). And I need to determine connections between coordinates in order to fetch a covariance matrix of...
28 February 2021 364 3 View
Hello fellow researchers, I recently have a problem with an HPLC coupled to an Orbitrap mass analyzer. I usually use some protein mix to make sure the equipment is ready to separate and read...
09 February 2021 3,595 8 View
In my research related to monitoring the cow behavior with help of sensors I have a permanent and principal problem with the data for model validation. I tried to find some available open-source...
26 December 2020 8,197 2 View
Hello, For a project which studies how teens deal with social media and their interfaces, I'm interested in so-called "activity theory" (also know as cultural-historical activity theory). I know...
21 October 2020 2,364 4 View
Hi everyone! Does anybody know about a good website or place to get some guidance on Northern blotting? Also, advice on blotting the RNA ladder?
07 October 2020 739 3 View
I am trying to design a vector as compact as posible to test DNA transcriptional enhancer and/or repressor activity, I already have a compact bacbone (pICOz vector), minimal promoter, translation...
22 August 2020 1,083 1 View
Hi everybody! I need to amplify phage DNA so as to be able to produce restriction profiles using different restriction endonucleases. Can anyone recommend which primers should I use? I know random...
06 August 2020 1,194 3 View
My current research is about SPC and I'm interested in tuning strategies for these types of predictive control approaches. The cost function is on the photo and the tuning parameters are Np...
23 July 2020 1,176 1 View
On the role of aluminum in TWIP steels
22 July 2020 5,670 4 View
There are some theories, as Pelgrum and Law (2003) suggested that it is necessary to make a switch between the teacher and the student roles. I mean, the student should be also the active role in...
15 July 2020 5,169 15 View
I am currently doing my third year design project. I have been assigned to design a glycerol recovery column in vinyl acetate monomer production. The process unit before the recovery column is an...
01 March 2021 9,525 4 View
I am a little confuse with the mechanism of solid lipid nanoparticles (SLNs). The main point of encapsulating drugs into SLNs is because some drugs have low solubility in water. Therefore, SLNs...
01 March 2021 3,703 3 View
When explaining substitution models, the substitutions are expressed as Q matrix. Why is the sum of the elements in a row zero?
28 February 2021 3,864 3 View
We have always used the 96 welled plate, the 48 welled plate but apparently there is much evidence on the 24 welled plate and above all its benefits.It states it is the same you would use on ELISA...
28 February 2021 1,149 1 View
I have a sample of treated water sample & asked to obtain ammonia conc. in sample using a machine with 5-25 ppm detection range. However, upon testing with different dilution factors, all...
27 February 2021 8,483 3 View
Good day to all, I have no experience with light emitting diodes. I am building a glass mini flume to demonstrate the photo degradation of Methylene Blue in water running over self cleaning...
26 February 2021 4,026 5 View
The main studies are as follows: * regular and timely receipt of information about the state of the environment using automated systems (stationary and mobile); * operational analysis of the...
23 February 2021 912 5 View
How to do acid digestion of soil sample with 3:1 aquaregia in an open vessel?
23 February 2021 3,053 7 View
Hi, Some background to my question: I have fitted 1st order multinomial Markov models with covariates. Since all probabiilties (for each row of the transition matrix) sum to 1, I estimate only...
22 February 2021 2,541 4 View
Most developing countries are not ready for e-Commerce? What dimensions and indicators are there to measure e-commerce readiness of a nation? Please share framework or model and evaluation...
22 February 2021 8,132 6 View