Electrocardiogram (ECG) Images available?

We are looking for a database or a data set with ECG images. We have already found some that contain the ECG data, but we need the images to evaluate them with AI methods.

01 October 2020 3,688 3 View

Indoor and outdoor coronavirus concentrations in aerosols?

I have been wondering why there are so few studies that measure the concentration of coronavirus in the air, especially outdoor studies, so I started searching for reliable scientific...

28 September 2020 5,695 5 View

Troubleshooting rAb expression?

Hi All, I'm trying to express a rAb in CHO or HEK293 cells and I am having an issue getting functional antibody. WB shows bands for HC and LC under reducing conditions and non-reduced shows a...

10 July 2019 8,613 4 View

Method for the extraction of insect melanin?

Dear colleagues, does anyone know a reliable method for the extraction of melanin (from both cuticle and formed by immune activated phenoloxidase in the body cavity) from whole insects? Thank...

24 May 2019 962 3 View

Tips for extracting DNA from clotted, frozen avian red blood cells?

I have clotted, frozen avian red blood cells that I am attempting to extract DNA from (for eventual micro satellite sequencing). I am using the Qiagen DNeasy Blood and Tissue Kit. The protocol was...

18 March 2019 8,656 3 View

How can one measure the image of a city? Are there studies dealing with a comparison of city image (especailly for German cities)?

I'm dealing with the question whether the image of a city is a relevant factor to explain the economic performance of that city and I'm searching relvant literature.

11 September 2018 8,895 4 View

I search studies analyzing social media (instagram) accounts of different types of criminal offenders??

11 August 2018 1,531 1 View

Is there a way to select Google Scholars entries by journal?

Hello, I have a general question concerning the usage of Google Scholar. Does anybody know, whether it is possible (after searching for a certain topic) to select specific journals from the...

09 August 2018 2,924 1 View

How can I implement a backpropagation routine?

We are currently developing our own machine learning platform with an emphasis on text mining and we are looking for a reproducible methodology to implement backpropagation. Where can I find a...

21 May 2018 3,250 4 View

How to study mesenteric adipocytes?

I would be interested in learning what research tools are out there to study mesenteric adipocytes? Either in cell culture, animal models (e.g. mouse) or in human tissue? I would be happy for any...

16 February 2017 6,633 1 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

How the parameters (such as Mw, Chemical bonds, polymer bland and so on) affect the mechanic property of polymer (such as storage, loss modulus) ?

Anyone can recommend any books on such topics? Thanks in advance.

02 March 2021 8,457 2 View

Which is the most efficient etching solution for nickel based alloys?

Which solution reveals the microstructure and features of nickel-based alloys?

02 March 2021 2,221 3 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

How Relativistic effects is one reason for lanthanide contraction?

The Lanthanide contraction which is the decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, is due to poor shielding of the 4f...

01 March 2021 2,272 4 View

Ester cleavage conditions?

Hi all, I need to cleave the ester in Ethyl 2-amino-1H-imidazole-5-carboxylate to make the carboxylic acid and retrieve the product from solution to use in downstream applications of linking to...

01 March 2021 8,766 3 View

Which reagent is best among 'Dimethylglyoxime" and "Dithiothreitol" for spectroscopic determination of Nickel ?

What I think is Dithiothreitol. As it is water-soluble and does not form a precipitate. But, the thing is it contains sulphur which is quite hazardous to aquatic animals.

01 March 2021 8,374 4 View

What is the indication of the absence of peaks in Methanol electrooxidation CV curves ?

I have several question regarding the MOR; hope anyone help me better understand. 1- in CV using (KOH+MEOH) what is the indication of absence of the redox peaks? shouldn't they exist as a sign...

28 February 2021 4,851 8 View

What is the error of the Txy diagram?

Hi, I know the attached Txy diagram has an error but can't figure it out. Could you please look at the diagrams and explain it to me?

23 February 2021 4,239 1 View