How to measure temperature and humidity in a gel environment?

One of my project requirements is to measure temperature and humidity in the growing environment of plant. The plant will be grown inside a petri dish with nutrient gel. A waterproof temperature...

28 January 2021 9,415 2 View

How to combine multiple LEDs with different wavelengths to create a uniform illumination?

Hello, I'm a university student who is currently doing a plant incubator project, which requires LED grow light system. One of the project objectives is to provide a wavelength-tunable light...

25 November 2020 5,508 6 View

Can nonanol be directly oxidized into nonanal by O2 under ambient conditoions without any catalysts or additives?

Can nonanol be directly oxidized into nonanal by O2 under ambient conditoions without any catalysts or additives? any comments and literature would be appreciated.

09 November 2020 6,744 5 View

How do I apply a constant load with same velocity to reach desire deformation in ANSYS Workbench?

I'm currently working on my academic project and it is required to perform a simulation about ASTM D575-91 (Method B) using ANSYS. I'm totally new to ANSYS, hoping someone can help me out. "The...

28 October 2020 8,764 3 View

What is the physical meaning of the cross term of the index performance of LQR ?

Dear All : I have a curious question. Among the index performance of the LQR, X' Q X and u' R u have the physical meaning. Now, my question what is the physical meaning of the cross term X' S...

02 August 2020 1,780 1 View

Extracting surface area, volume and cortical thickness from multiple groups using FreeSurfer?

Hello everyone, I'm new to FreeSurfer and this question might sound a bit stupid: I'm trying to get the volumetric measures, surface area and cortical thickness of brain regions of three groups...

29 July 2020 8,574 3 View

What is the function of sucrose or mannitol in buffer for cell lysis?

In the subcellular isolation experiment, sucrose and mannitol is present in buffers for resuspending cell pellet after centrifugation. For example, Isolation buffer (IB): 220 mM d-mannitol, 70 mM...

28 May 2020 4,608 3 View

UPLC-MS problem after MS was accidentally powered off ?

Dear everyone: We have an Acquity-UPLC coupled to Synapt g2-si MS system. Recently, the MS was powered off because the electricity supply failed. When I restart the MS, and then run LCMS samples....

09 March 2020 9,496 1 View

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If the mass and volume of the oil droplet are known, and the oil droplet is formed from nonanoic acid, how to calculate the cross-sectional area and thickness of the oil droplet on the water...

28 December 2019 705 3 View

How to purify organic compound?

Both recrystallization and sublimation have been tried, and i took the Mass Spectra after the aforementioned purification methods, the molecular weight is right and from the Mass Spectra i can...

02 September 2019 7,453 5 View

Binary Logistic Generalized Linear Mixed model in SPSS. Is it doable?

I want to analyses the proportion of swimming sperm of three species of fish in two salinities. To analyse the proportion of swimming sperm in a Generalized Linear Model, I would use a Binary...

03 March 2021 2,297 3 View

Do I need to do linear regression before running mediation analysis using PROCESS MACRO by Hayes ?

I just wanted to check if I need to run a linear regression separately if I am using PROCESS MACRO to run mediation analysis. Thank you.

02 March 2021 4,359 3 View

How to repeat an operation on an atom selection for multiple times in PyMol?

Hi, I am trying to construct a multi-layer fibril structure from a single layer in PyMol by translating the layer along the fibril axis. For now, I am able to use the Translate command in PyMol...

02 March 2021 4,569 4 View

What analysis to choose with a large neste dataset and clearly skewed or kurtotic distributions?

Hello! I have a dataset of n=3000 nested within 8 countries with approximately 200 or 400 responses in each country. I originally planned to perform multilevel modelling with 4 dependent variables...

02 March 2021 6,865 1 View

How optimize the Size Exclusion Chromatography?

Hello! I'll do a size exclusion chromatography, but I only have an open column, and I'll perform the peptide extraction from yeast, using buffer lysis (sodium phosphate 50 mM/NaCl 30 mM/DNAse and...

01 March 2021 2,215 2 View

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01 March 2021 3,905 5 View

What test should I use to compare two or three means, if data is not normally distributed but sample size is > 30 in each group?

I personally feel this as a most confusing question. As per my understanding, if sample size is > 30, and sample is skewed, we can still use paramteric approach, as it will follow Z...

01 March 2021 1,587 6 View

Is it necessary to report effect size (ES) in statistics of biomedical research given that we already report p values routinely?

Pls share your thoughts

01 March 2021 7,330 4 View

How can we simulate an hyperelastic-viscoelastic behavor with Ansys APDL?

I am working on modeling and simulation of biomecanical material behaviour, I have succeded on simulating skin using anisotropic hyperelastic material, on APDL and in our lab's finite element...

28 February 2021 552 3 View

How to plot the probability paper of Gumbel distribution using R programing?

In R-studio, there are many commands of Gumbel package. Arguments are also different. I`m asking about the alpha parameter of the Copula which must be greater than 1. If this is the one used to...

25 February 2021 5,229 3 View