What is the meaning of negative value of sigma dc in dielectric spectroscopy?

More Nishkala Rao's questions See All

What are the natural background values of Major,Trace and REE elements in sediments deposited by Indian rivers?

We are working on geochemical analysis of sediments derived from eastern and western ghats of India.

20 January 2021 8,963 6 View

Is it desktop SLA 3d printer works with different resins or blended resins or nano reinforced resins?

I want to start my research work on nano reinforced polymer composites, for that i am choosing desktop SLA additive manufacturing process for preparing the component. My doubt is that, is it...

28 November 2020 978 4 View

Is there any software for calculating hit bias (HB), missed precipitation (MP), and false precipitation (FP)?

I have a time series of two rainfall products. For error decomposition analysis, I have to calculate HB, MB and FB. Is there any software for calculating these variables.

27 November 2020 980 2 View

How we can measure the Salt level/concentration in the field? or how we can measure the pH of soil in field?

I am visiting different high salt effective areas to collect plant leaves and soil samples. Before sample collect i must want to know the pH on soil. Is their any rapid fast and reliable method to...

25 October 2020 3,732 2 View

Do Acetonitrile type (gradient grade or non gradient grade) affects the HPLC results?

Trying to develop the HILIC-RID method for sugar analyte but getting very different results between two-run of the same sample. Tried 60 minute washing between two-run. The mobile phase is 75:25...

11 June 2020 8,385 3 View

Why is COD removal more in biological anaerobic treatment?

Answer related to metabolism of bacteria would be appreciated.

23 May 2020 4,050 2 View

Conducting a survey to understand the response to work from home during the covid-19 lockdown?

Greetings, We are conducting a survey on work from home and its impact, please fill the questionnaire and contribute to the growth of academic understanding of the concepts and for policy...

03 May 2020 3,758 22 View

Can you please attempt this survey on online e-learning platforms?

Hello All We are conducting a survey on 'Assessing the usage of online e-learning platforms. The data collected through the survey is used only for academic research purposes. Thanks for the...

22 April 2020 4,567 2 View

What is the impact of COVID-19 on WEF-Nexus?

Hi Everyone, I understand that, COVID-19 will strong impact health and also on Nexus components of Water-Energy-Food (WEF). I want to understand more from collective inputs from all the corners...

17 April 2020 1,471 26 View

Can you please tell me what your specialisation is?

Dear Saad Can you please tell me your specialisation and area of interest? I suggest you please go through my research papers which were written on various topics and the ideas are innovative....

22 February 2020 5,088 5 View

Is There Any Feasible Method To Test Fluorescent Compounds Other Than Fluorescence Spectrometers ??

Is There Any Feasible Method To Test The Efficiency Of Fluorescent Compounds Other Than UV Spectrometers ? Suggestions Would Be Appreciated !

02 March 2021 5,785 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 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

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

How to call both UMAT and UEL together in Abaqus?

I have a model with bulk material (matrix) and inclusions and cohesive interface elements between both. For the bulk material, I have implemented a UMAT and for the cohesive interface elements, I...

20 February 2021 1,286 2 View

Unusually Busy Raman Background?

Hello, I am observing a nearly periodic background spectrum for a wide variety of SERS substrates. I see this response (attached below) for bare Au films, Cu films, and Au nanoparticles on...

15 February 2021 9,922 5 View

How to determine the drug loading and the drug release capacity of a polymer micelle using UV spectroscopy?

Currently, I am working on PLA-PEG copolymer micelle for the drug delivery system. I have seen several papers where some researcher talks to centrifuge the drug-loaded micelle to separate the...

13 February 2021 5,822 7 View

Measurement of water retention in organic substrates without a pressure plate?

Hello, I'm trying to measure the physical and hydrological properties of organic substrate media. Currently, I'm referring The book Soil sampling and Methods of Analysis by Carter and Gregorich....

09 February 2021 3,233 8 View

Please how can i write a proposal on the methodolgies of AAS to determine heavy metalsin water?

Please I want to write a proposal on the methodologies of AAS to determine heavy metals in water. please any link can help.

08 February 2021 3,587 7 View

Handheld Portable Raman spectroscopy systems - recommendations and experience?

Hi all, I am looking for some general feedback and information from those that have experience using handheld/portable systems? I am looking at the prospects of using an off the shelf system from...

07 February 2021 9,691 3 View

Souvik Bhattacharjee

The following articles might help.

1. Article Temperature and voltage dependence C–V and G/ω–V characteris...

2. Article Negative conductance in semiconductors

3. Article Negative capacitance switching in size-modulated Fe3O4 nanop...

4. https://www.sciencedirect.com/science/article/pii/B9780080210445500106

Ali A. Al-Allaq

Please see the following research, I hope it is useful