If opposite charges attract each other, then why do neutrons and protons bind with each other, whereas electrons surround them in an atom?

According to science, like charges repel each other and opposite charges attract each other. But if you observe the structure of an atom, neutrons(neutral), and protons(positive) bind tightly with...

23 November 2020 8,881 7 View

What are the effects of chemical fertilizers on human health ?

Can any fertilizer causes cancer ?

06 September 2020 8,217 11 View

How can one determine the lifetime of a compound if quantum yield is known?

I determined the quantum yield of my compound from fluorescence instrument. So can i determine the total lifetime of my compound from this data?

19 August 2020 521 1 View

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04 July 2020 9,111 0 View

How can i ensure the complete oxidation of graphite before quenching the oxidation process by H2O2?

I am following KMnO4 -H2SO4 reaction media for the synthesis of graphene oxide(GO) by an improved process.

04 June 2020 508 3 View

Can anyone help me to know whether band gap of a semiconductor can be changed by loading dye sensitizer or not?

1- n-type semiconductor has an absorption spectra 2-Dye has an absorption spectra 3- Semiconductor+ Dye has an absorption spectra 4- Can I calculate the band gap of of SC, Dye and SC+Dye using...

27 March 2020 4,222 4 View

What is a multi-label classification and how to use it on classifying text documents?

I want to know how multi-label classification work in detail. At the same time, how does the confusion matrix for multi-label classification is constructed? How does the performance measures such...

28 December 2019 8,065 3 View

What are the Model fit parameters for multigroup analysis in AMOS?

I have used SEM with AMOS for my data for hypothesis testing and the model parameters came out good. I wanted to conduct a multigroup analysis with the same sample by categorizing them into two...

16 December 2019 7,453 3 View

Can I use XBridge C18 ( 3x150mm, 3.5 um) column in a Aquity UPLC system for method development?

I have a UPLC system and XBridge C18 ( 3x150mm, 3.5 um). I am running short of time and cant procure a UPLC compatible column for the time being.

15 December 2019 8,433 12 View

How many different origin of replication (ori) sequences can I have in a plasmid?

Multiple ori sequences pertaining to different hosts are usually present in a plasmid. But how many different ones can I have, without causing problems? If problems do get created, what kind of...

25 November 2019 400 2 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

Can we classify HV and LV lines based on line length?

I have dataset which shows the length of power lines. I need to classify the lines based on the line length. Is there a rule to classify the High voltage (HV) and low voltage (LV) lines based on...

03 March 2021 4,116 4 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

How to remove the residual PDMS on the silicon mold?

Incompletely cross-linked pdms are difficult to remove.

01 March 2021 798 3 View

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...

28 February 2021 6,477 1 View

Dapi fluorescence protocol for colon cell lines ?

28 February 2021 2,534 2 View

Necessary tube lenght to cool Natural gas in a dry-ice cooling bath?

I have a tank which contains natural gas at 250 Bar and 293 Kelvin. I want to cool the gas in a dry-ice cooling bath to about 195 Kelvin. The gas will flow in a copper-tube through the bath with a...

27 February 2021 8,128 1 View

Can impedance of antenna be less than 50 ohms?

I am simulating helix antenna in hfss, right now, giving excitation with 50 ohms port. When I see the results of Z parameter (real). It shows lower than 50 ohms. Do not understand, if it can be...

27 February 2021 4,218 7 View

Exit velocity of natural gas from pressurized tank?

Hi Guys. I'm a mechanical engineer and have a bit trouble, would be very glad if you could help me with my questions. I have a pressurized tank which contains Natural Gas at 200 Bar and 293...

26 February 2021 6,253 3 View