Hello everyone, does anyone have this attached map as a shapefile?

- I did georeferencing and digitizing for it, but it will be more accurate to have the original one.

19 October 2020 9,550 7 View

Can anyone suggest me how to prepare TEM sample for carbon dots?

I dissolve the solid sample in ethanol and then apply it to the carbon grid and dried it but I am not getting satisfactory results..

02 August 2020 9,014 13 View

What are some of the useful books\articles that explain Voygotsky sociocultural theory in language learning?

I am in the process of writing my MA thesis and I want to consult some easy-to-understand books that are important to understand the theory.

07 July 2020 6,189 6 View

Can anyone help me know if I can get Amman-Zarqa basin as polygon shapefile?

Dear connections, I hope you all have a happy day Can anyone help me know if I can get Amman-Zarqa basin as polygon shapefile? I really need it. Thanks in advance. #Amman_Zarqa #ArcGIS

06 July 2020 6,150 3 View

Source of contamination in my plant tissue culture?

For the past 4 weeks I have been experiencing the growth of mould in my plant tissue culture plates. I have ensured that I am being "extra clean", I clean the flow hood with 70% ethanol three...

09 March 2020 8,688 19 View

Can we program MSP430FR5994 launchpad in contiki?

I want to program MSP430FR5994 launchpad in Contiki but there is no example to start with. I have used a cc2560 sensortag example code and it is working correctly. Can anyone guide me in this regard?

13 January 2020 300 2 View

How to select a suitable protein for a certain ligand?

hi. I am synthetic organic chemist and working on synthesis of biologically active natural products and derivatives. I am new in the field of molecular docking. please guide me how can i select...

10 December 2019 3,730 7 View

How to analyse amino acid chromatogram?

14 August 2019 4,280 7 View

Do companies have an ethical obligation to inform candidates they will be reviewing their social media accounts?

I discuss this topic in my class and want to write a paper on this subject. Given that 70% of employers view candidates' social media accounts, are companies obligated to disclose this to...

27 January 2019 3,604 8 View

Research proposal, research design, data analysis. Could you be so kind and check my methodology and provide suggestions and data analysis method ?

Could you be so kind and help with my research proposal. Is my methodology allow me answer to research question? research question: The relatively importantance of factors in students choise of...

16 January 2019 8,418 3 View

Chlorinated organic formation in odor control scrubbers using hypochlorite?

I'm involved in a study of odor control technologies for municipal wastewater treatment plant. One of the control options involves a chemical 2-stage (acid/alkaline) packed bed scrubber. The...

03 March 2021 3,661 2 View

What solvent can I used for Paal Knorr reaction between 6-amino hexanoic acid and 2.5 hexanedione?

I am try to make the Paal Knorr reaction between 2.5 hexnedione and 6-amino hexanoic acid, my problem is type of solvent to use, because 6-hexaminohexanoic acid is soluble in water but I am not...

02 March 2021 4,443 2 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

What is the most reliable source to get Impact factor of journals?

Source to get Impact factor of journals

01 March 2021 6,654 2 View

How to remove DCU and HOBT from my reaction?

I am doing a acid and a chiral amino alcohol reaction using DCC and HOBT in DCM or THF? Can anyone suggest me how to remove DCU and HOBT from a reaction mixture??

28 February 2021 2,153 1 View

What is the most common number of epitopes in an multi-epitope Vaccine?

hi everyone, I'm interested in the field of vaccine design specifically multi-epitope cancer vaccines , I want to know if there is a minimum and maximum number of epitopes we could use in a...

27 February 2021 3,882 3 View

Which index or sites are reliable in determining of plant species?

There are many indexes when determining plant species: Plants of the World Online (POWO), International Plants Names Index (www.ipni.org), The Plant List (www.theplantlist.org) and others. But...

26 February 2021 3,404 10 View

How to increase solubility of Poly acrylic acid in Dioxane solvent?

I am working with Polyacrylic acid (100.000Da) and instead of water, I need to use another solvent (dioxane) to dissolve PAA. However, because of the high molecular weight, it's quite hard to...

25 February 2021 2,225 5 View

Why is NH4OH added in heavy metals limit test?

The limit test I'm referring to is USP method II. In this procedure you need to dropwise add 6N of NH4OH to the sample until it the pH is alkali. After that you need to dilute and add HOAc until...

23 February 2021 2,049 3 View

Is it efficient to do liquid biopsy to investigate the gene expressions of the tumor?

To do liquid biopsy and look for specific gene expressions there are so many published papers. Thera are different protocols and procedures used to isolate circulating cell free RNA or mRNA from...

23 February 2021 7,326 5 View