What are some factors that would result in a small fEPSP?

Hi everyone, I'm consistently having small fEPSP's of approximately -0.01 mv. I've been moving the position of my electrodes and increasing the stimulation intensity but the response doesn't...

03 December 2020 7,125 7 View

What is an appropriate tip diameter size for a stimulating electrode?

I'm setting up an electrophysiology rig examining LTP in the CA1 region of the hippocampus. What is an appropriate tip diameter size for a stimulating electrode to generate fEPSP? Also, I'm...

01 December 2020 5,139 2 View

Acoustic shock wave from spark?

I'm working with an application where I'd like to detect a short sound from a distance up to 100 m. An ultrasonic chirp has been unreliable so far. I was contemplating the use of the snap of an...

30 September 2020 8,627 4 View

Can anyone direct me to where data may be obtained regarding the ecological imprint by the manufacture of products for renewable energy?

I want to understand the difference in the ecological imprint due to moving to renewable energy

14 April 2018 3,721 3 View

What are the ways to know whether or not the analysis with multiple imputations is a better estimate than the one with missing data?

I have a panel data set: 39 countries and 12 years (n = 468). My key variable of interest (Variable A) has missing data, along with other variables, and 387 cases are available out of 468. I have...

11 March 2018 6,448 3 View

Do social scientists in European have less preference in the use of statistical analysis than their counterparts in the United States do?

I am a social scientist (more accurately a criminologist) who works in the United States. A couple of years ago, I submitted my manuscript to a journal in Europe for a possible publication. The...

08 March 2018 549 4 View

Invasive devices are being used to stimulate organs in the body. What frequencies, voltages, and pulse lengths are being used?

There are a lot of invasive technologies in use today that are used to stimulate organs, the nervous system, the brain, and pain receptors in the body. One example, would be a device that...

03 March 2018 570 3 View

How can I create a damper/spring-foundation under a steel beam in dynamic explicit in Abaqus ?

Hi, I am new to abaqus. I am modelling a steel cantilever beam under impact loading in abaqus. I used solid-homogeneous as my section. I created a step "Dynamic-Explicit"(time period=0.01),...

25 February 2017 1,542 3 View

There are many antennas out there. I want to broadcast a signal that only one would receive. How can I do this?

07 May 2016 5,153 6 View

Is anyone doing research on the extraction of biological signals using atomic magnetometers positioned remotely (>10cm) from the body?

Recent research has enabled EEG readings with a sensor 4mm away from the skin: https://www.osapublishing.org/boe/abstract.cfm?uri=boe-3-5-981 In 2013, an extremely sensitive atomic magnetometer...

30 November 2015 6,483 3 View

How to check the uv-vis absorption of nanoparticle by surface plasmon resonance?

I try to check the uv-vis absorption of Indium nanoparticle. Now I am measuring in solution, can I measure it in the form of a film?

01 March 2021 930 3 View

Why initial concentration of Pb not the same as calculated one when testing using AAS?

I am currently doing research on the adsorption of heavy metal using magnetic reduce graphene oxide. I use AAS to determine the concentration of the heavy metal. I prepare the Pb solution with...

26 February 2021 9,580 4 View

Is it possible to have two luminescence bands of the same peak position but with different intensities in single spectrum??

Hi! If it is possible to have two luminescence bands of the same peak position in a spectrum, what is the reason behind formation of two separate bands instead of one? This phenomenon is related...

26 February 2021 4,963 5 View

Modeling viscosity using model of Chung?

Hello, As part of simulation of gases mixture and water, I need to calculate viscosity of the fluid components and I am using relationships proposed by Chung et al. (1988). The irony is while I...

25 February 2021 8,053 5 View

How can I find a Raman spectrum wavenumber corresponding to what compound?

I have several Raman spectra with very distinct peaks at certain wavenumbers, such as 277, 359, 466, 583, 623, 686, and 795cm-1. How can I identify them to what compound(s)? The RRUFF and others...

24 February 2021 363 3 View

Is this the write procedure for acid digestion of soil for heavy metal analysis using AAS?

How to do acid digestion of soil sample with 3:1 aquaregia in an open vessel?

23 February 2021 3,053 7 View

Can a semi-conductor material have different absorption coefficient?

Does the absorption coefficient of the semiconductor changes with the change in the structure of the semiconductor? If you have a thin film and nanowire of the same semiconductor, will the...

23 February 2021 9,799 4 View

What are difference between laser diodes, simple light emitting diodes and power light emitting diodes when operated in the visible spectrum ?

I want to illuminate a scene (small space) using LED to capture photographs or videos of some tiny objects inside the space. But am not sure if I should use a Laser LED, or simple LED or power...

22 February 2021 4,240 4 View

What low-cut filter (high Pass frequency) to be used for response spectrum (Tripartite plots) ?

What low-cut filter (high Pass frequency) to be used for the response spectrum (Tripartite plots)? I am currently working on differentiating between hard/soft site responses in Indo-Gangetic...

21 February 2021 9,273 2 View

How can I simulate the optical absorption spectrum of a biomaterial (like DNA or protein) in COMSOL?

I need to simulate the optical properties of a biomaterial, namely DNA, in COMSOL. Basically I need to simulate the IR absorption spectrum of a cylinder filled with a 'concentration' of DNA. I am...

21 February 2021 3,043 3 View