How to purify gallic acid to get white crystals?

I have isolated gallic acid from triphala churna but it is light brown in colour.

11 January 2021 8,737 1 View

What is virtual photon field , how is it helpfull to explain the Lamb shift on hydrogen atom ?

It is known that the Lamb shift is the consequence of the interaction of the electron with its virtual photon field. What is the meaning of virtual photon field? And how is it helpful to explain...

03 December 2020 535 3 View

How to decide Courant number as solution progresses?

Hello, ##ANSYS, ##Fluent. I am using pressure based solver, implicit scheme, VOF method (solving steady state open channel flow), k-e-RNG, and Coupled algo. Initially, I assigned...

22 June 2020 3,591 21 View

Why olmesartan is not synthesized using enzymatic route???

is there any enzymatic route for synthesis of olmesartan??

15 April 2020 6,244 3 View

How to preform coarse grained MD simulation in Gromacs?

Hello everyone, I want to perform coarse-grained MD simulations in Gromacs, this is the first time I am doing this. so, I need guidance regard Gromacs usage and how to perform coarse-grained MD...

24 November 2019 2,793 5 View

Can anybody help me in finding dataset of plant disease?

I am doing my phd work on plant disease identification using deep learning. So i am searching for data set of plant leaves of soybean and wheat please help me.

19 September 2019 9,653 6 View

Rapid Publication Journals in the Field of Wastewater and Environment Engineering ?

Please Suggest The SCI Journals with rapid publication in the field of wastewater and environmental engineering.

17 January 2019 2,594 6 View

How to add a graphical data in MATLAB simulink?

i have some part of the data from which i can plat the graph. for example in the mean time of calculation i need a particular value from the graph i can retrieve it. so how can i insert a graph in...

19 September 2018 2,399 1 View

How much minimum enrich ChIP DNA is required to proceed ChIP-seq?

How much minimum enrich ChIP DNA is required to proceed ChIP-seq?

26 April 2018 8,191 5 View

Why do elastomers swell more than other polymers during the extrusion?

I performed some experiments on ABS and EVA and observed more swelling in the case of EVA material during the extrusion. Can anyone explain why it is happening?

04 May 2017 1,403 1 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

Grid connected inverter using virtual synchronous machine?

Hi everybody, currently, I am working on the grid-connected inverter. I want to make my grid-connected PV system a PLL-less system. I have studied some reachers are implementing a virtual...

07 February 2021 6,078 2 View

Can we model an Arima (0,0,0)(0,0,0) with pulse intervention?

Hello, i got trouble when i try identify a intervention analysis about disaster impact on night time light intensity. i have 65 month data from January 2015 until may 2020. based on...

06 February 2021 10,018 4 View

Can anyone elaborate the method to measure arterial pulse wave velocity in research studies involving Sphygmocor??

Sphygmocor is the tonometry based instrument which is used to record generally radial pulse waves and then calculating various variables like Augmentation Index, SEVR etc. It is also used to...

02 February 2021 7,546 3 View

Can't run my IPMSM drive system with DC-supply higher than 125 V. Have anyone had similar problem?

Hey, I try to run my 4 pole IPMSM with PWSVM and use a typical controller with PI-controller with a current loop and speed loop. When I run my system with DC-supply 100 V with a steady-state speed...

28 January 2021 7,354 8 View

What are some properties of a proton in a static B-field?

I have some basic questions about the behavior of a charged particle in a static B-field. 1. Without a B-field, the particle has spin, with random orientation and spin frequency. a) What...

24 January 2021 1,389 3 View

How to improve my BrdU immunostaining?

24 January 2021 414 3 View

I am facing problem with integration of boost converter with single phase offgrid inverter?

i tested boost converter with MPPT and single phase offgrid inverter with close loop control separately. They work fine but when i connect them boost converter doesn't give the output as it did...

17 January 2021 6,428 6 View

"The following block is not supported in Phasor simulation?

I am designing a control system for Hybrid renewable energy systems using Matlab/simulink/simscape, but currently having a problem. Whenever I run the simulation, I get the error shown below. "The...

12 January 2021 2,142 5 View

Why do the Dual Central Inverter one is star connected and the other one is delta connected to the 12-pulse transformers?

It's hard to understand for me. And I need answers really quick. Hope you can help me.

21 December 2020 8,140 2 View