Is the relationship A=-Log T applicable for calculating the absorbance, in the case of thin layers?

More Dergham Driss's questions See All

Is there a relationship between working memory and consciousness?

In other words, can we talk about working memory (considering that it is the active part of human memory), independently of consciousness? Or is consciousness and working memory is the same?

20 October 2022 6,108 7 View

How to protect sensitive data in DL ?

Hello all, I hope you are doing well. I would like to know about effective and suggested approaches to protecting sensitive data used in Deep Learning models. Thanks for sharing your thoughts.

12 June 2021 6,789 3 View

Research papers' review: Tips and tricks ?

Hello all, Hope you are doing well and in a good shape. As a first experience in reviewing research papers, I want to know the efficient tips and tricks about how to efficiently review a...

06 April 2021 9,573 4 View

What is the best way to filter plasma/serum to use in cell culture treatments?

best means a filter that mimimise the sample lost and being efficient at the same time? Any recommendations?

04 April 2021 2,945 3 View

Is it possible to preserve dried microalgae at 4°C?

Hello, I am trying to store microalgae at 4°C and I want to know if this has no effect on the biochemical composition

30 March 2021 6,678 1 View

How can I convert the intensity of fluorescence into pigment concentration using a spectrofulorometer?

Hello Everyone, i'm actually using Shimadzu RF-6000 Spectrofluorophotometer and did not understand how to interpret the results and is it suitable to do a chlorophyll quantification?

02 March 2021 220 5 View

Which techniques are used to improve the accuracy of deep learning models by compressing neural networks?

Hi all, I am looking for enhancing the accuracy of a deep learning model using some techniques to compress neural networks. Could someone suggest to me some of the tools/techniques,...

29 January 2021 2,005 4 View

What is the best weight initialization technique for neural networks ?

Hello everybody, I am looking to study the optimal technique to initialize weights in a large neural network with multiple hidden layers. A comparative study will be more than appreciated. Many...

16 January 2021 9,477 2 View

What are the current and future research directions in AI related to healthcare systems?

I want to have an idea about the current issues and future challenges of AI in the medical area. For that, I need some technical suggestions on the following questions: 1. How can we combine Big...

23 September 2020 8,622 3 View

Optimized combination of ML & DL in medical area ?

Hello all, Could someone guide me in looking for an optimized combination of Machine Learning and Deep Learning methods/models to deal with medical data? Thanks in advance.

17 September 2020 6,906 8 View

Which type of compound does lamda max of 218 indicate in a uv-vis spectrum of a partially purified compound through column and TLC?

A crude extract of fungal culture using EtOH was subjected to column and TLC and partially purified compound was obtained. UV vis spectrum of the compound/s has max absorbance at 218nm. The...

11 August 2024 9,801 2 View

How can I measure the thickness of thin film by Uv-Vis?

06 August 2024 7,810 3 View

Why is TLC not a form of partition chromatography?

Why is TLC not a form of partition chromatography and paper chromatography not a form of absorption chromatography?

03 August 2024 7,035 3 View

Is there a good freeware software for photodocumentation of TLC?

I need something like Camag's VisionCat software for photodocumentation of TLCs. Could you recommend something?

31 July 2024 8,415 1 View

How to build my own lab made four point probe set up?

Hello, I'm trying to measure the conductivity of semiconductor films but since I don't have a commercial four point probe set up I would like to build one on my own in my lab. I have generators,...

30 July 2024 906 2 View

Does anybody know why my chitosan/pva/gelatin hydrogel dissolve in PBS?

My final research is about making chitosan/pva hydrogel for wound healing using gelatin as crosslinker. Last month, i made the thin film hydrogel and it turn well. It was okay. Last week, i make...

28 July 2024 2,794 6 View

Is it possible to manufacture polypropylene sheets using a biaxial process?

I know that films and other low-thickness laminated products are produced using biaxial orientation, but is there something similar for sheets with a thickness of around 6 mm? Or are they...

21 July 2024 1,559 1 View

How do you decide an optimal AC amplitude for non-faradaic electrochemical impedance spectroscopy?

I work with planar interdigitated electrodes (IDEs). The finger width and the spacing between the fingers are 5 micron. The surface of the IDEs is coated by a non-conductive polymer layer...

16 July 2024 5,031 1 View

Any suggestions to enhance the wettability and adhesion of fluorosilanes?

I am facing a difficulty to prepare the thin film which contains fluorine contained silica monomer, as we know F is highly reactive with low surface energy and it could be the reason of low...

09 July 2024 6,017 3 View

Can some indicate a technique - or approach - to measure the thickness of a 20µm film and thickness with water uptake?

Hi, I need to measure the real-time (or temporal intervals) thickness variation of a transparent material from dry to wet/humid conditions, however, I cannot use the following techniques: -...

08 July 2024 4,799 4 View

Alan F Rawle

Dergham Driss See: https://www.researchgate.net/post/How_can_I_calculate_the_Absorption_coefficient_from_Absorbance2

and especially the contributions from @Thomas Mayerhöfer

Rachid Baghdad

Hallo,

You canconsult these two docs:

D.K. Schroder, Semiconductor material and device characterisation, Wiley, New York, 1990.

J.I. Pankove, Optical processes in Semiconductors, Dover, New York, 1976.