How to remove the species data from rda data frame in R (only remain the sites/samples point)?

Dear everyone, When I using the rda function in r, I met this question. As you can see in the figure, there are a lot of deep blue points which refers to the species. But I would like remain...

15 February 2021 8,982 2 View

Does anyone knows about a comercial software to record pressure and temperature during reaction in an Autoclave?

Dear all: Currently I am working with polymerization reaction in a reactor. For this, I need to control temperature, pressure, agitation speed etc. For calculation of rate of polymerization, I...

07 February 2021 355 2 View

How to obtain the plot of frequency shift w.r.t. pressure in a micro resonator (cc beam) based MEMS pressure sensor in COMSOL?

I need to know how to plot the impact of pressure (0 - 100 kPa) (which is applied on the back side of diaphragm) on the frequency shift caused in the cc beam supported on the diaphragm with...

01 February 2021 5,805 17 View

Whether L version and D version peptidesshould have identical NMR, especially in the state of self-assembly?

Whether L version and D version peptides should have identical NMR, especially in the state of self-assembly have to have identical NMR? How to use HRMS to confirm L version or D version...

01 February 2021 6,756 4 View

What are possible factors influencing the isotope-based hydrograph separation in river confluences?

When performing hydrograph separation (EMMA method) with isotope tracers in river confluences (natural large basin), we found that the contribution of each end member sometimes exceeds the...

20 January 2021 8,403 5 View

Can you have pressure inlet and velocity inlet at the same time?

I was reading a reference (Reitz-A Photographic Study of Flash Boiling Atomization). In his experiment, his boundary condition is delta p and constant velocity. The liquid injection pressure was...

18 January 2021 842 9 View

What is the simplest way to implement data encryption for Arduino project that communicate through Bluetooth ?

I have developed a project based on Arduino that communicates through Bluetooth with Android application, I want to enhance its privacy through encryption so that data should be prevented up to...

07 January 2021 7,933 5 View

How to configure wifi password and SSID on NodeMCU ESP8266 through wifi direct instead on hardcoded credentials?

While working on IoT projects I mostly use NodeMCU ESP8266 firmware for IoT Implementation. For coding, I use Arduino IDE in which for connectivity with wifi router we define hardcoded variable...

07 January 2021 6,688 3 View

What's the reasonable loading control of nuclear protein in acute injury?

What's the reasonable loading control of nuclear protein in acute injury? Is HDAC1 or Histone H3 a resonable loading control of nuclear protein in acute injury model? How to explain total my total...

06 January 2021 1,607 2 View

How to increase the attachment of the HEK293t cells to the glass coverslips or cell dishes?

Hey guys, I always have problems with the attachment of HEK293t cells to glass coverslips while doing IFA. They are so easy to detach from the coverslips while washing. The coverslips are already...

30 December 2020 8,381 3 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

Can anyone help with an Accurate Diffuser Expansion Loss formula for rectangular shaped diffusers in turbulent flow regime?

I have tried Idelchik's Handbook of Hydraulic Resistance 4th Edition (2007 page 300) formulas and across some range the formulas are reported valid for, the law of conservation of energy is...

20 February 2021 2,504 1 View

Is there any effective FEM solver to perform simulation of balloon inflation with large deformation (e.g. 300% strain)?

Hi! Thank you for your time, attention, and support. I am currently using FEM solver Abaqus to perform a set of balloon inflation simulations, trying to understand the deformation shape, stress,...

14 February 2021 2,524 4 View

What are backpropagation formulas for residual neural networks?

14 February 2021 4,194 3 View

Why would one go up and then down with gradient during HPLC?

I think I've seen it previously, but the current example is from this publication https://www.mdpi.com/1420-3049/14/5/1825 where they used the following gradient on HPLC: min ... % MeOH 0 ... 2 20...

09 February 2021 5,422 3 View

Coupled hydric and mechanical equation COMSOL?

hello i am trying to study the mechanical deformation due to the humidity on a 3d volume formed of 2 phases. my equation are dw/dt =grad(Dm*div(w)) and the mecanical is sigma=E*beta*nabla(w)....

27 January 2021 5,201 1 View

Difficulties purifying Outer Membrane Vesicles using a Sucrose Density Gradient: Unable to detect any protein after this process?

I'm currently trying to purify Outer Membrane Vesicles (OMVs) following their extraction from the bacteria I'm working with. After the initial extraction the concentration of protein seems good...

27 January 2021 6,852 3 View

PCR primers bind to specific DNA at specific temperatures but not other temperatures?

I ran PCR in order to analyze a P-element excision on a mutant drosophila line. My results were not conclusive, however that is beside the point. I ran a temperature gradient in order to optimize...

25 January 2021 9,164 11 View

What time and speed should the centrifuge be set at in order for cell debris and clumped proteins to form a pellet?

- The Eppendorf tube was then placed in a microcentrifuge. Notice how it is balanced with another tube placed opposite it in the centrifuge drum to ensure smooth rotation. Other information...

24 January 2021 2,547 3 View

Just face a Comsol issue dealing with magnetically hyperelastic material?

Hello all, I am just newly doing a simulation to test the deformation status of a magnetized rubber-like material, which is in-compressible, under a shifting magnetic field. Try to find the...

22 January 2021 7,427 2 View