What pH condition required to coat APTES on silica coated Fe3O4?

It's a hydrolysis reaction, which may produce by either acid or base-catalyzed reaction. so can anybody help me with this, which condition is suitable for this reaction?

26 February 2021 1,760 8 View

What condition required for coating of Fe3O4@SiO2 by using APTES?

I tried coating Fe3O4@ SiO2 by using APTES in 5% water-ethanol but it is not coated. Kindly suggest a solution for it. Thanks

24 February 2021 5,992 4 View

How to Control Whiteflies in coconut leaves?

24 February 2021 1,005 1 View

Is it possible to design digital all pass filter for specific frequency range of the system?

I would like to know, Is it possible to design digital all pass filter for specific frequency range of the system to alter the phase of the system in that specific range of frequency? If yes how...

26 November 2020 1,402 5 View

How to purify Plasmid DNA after RNAse treatments and Restriction enzyme digestion for high yield Capped RNA Transcription ?

I tried phenol/chloroform purification method with 2 microgram DNA after RNAse and Restriction enzyme digestion but I am not getting enough quantity of plasmid DNA at the end. I am just getting...

25 September 2020 7,591 4 View

I am doing for Protein-ligand MD simulation using Gromacs but facing some problem during Ligand Topology step. How to resolve it ?

after running python3 cgenff_charmm2gmx_py3_nx2.py LIG lig_fix.mol2 lig.str charmm36-jul2020.ff I am getting following error: error in atomgroup.py: read_mol2_coor_only: no. of atoms in mol2 (44)...

30 August 2020 4,546 3 View

In some CP patch design the polarization changes for LHCP to RHCP, What should be the possible reasons?

I have designed a dual print dual cp antenna, identical patch on both side of the substrate (placed side by side), on analysis, it is found it is showing LHCP in one band and RHCP in another band....

04 August 2020 5,136 3 View

In dual band antenna why the gain in upper band decreases?

In some printed antenna designs, generally, the gain in the upper band is larger than the lower band. However, in some cases (in my design having printed circle on both side of the substrate like...

03 August 2020 5,802 5 View

How to cap the maximum amount of reinforcement addition to make a polymer to be thermally conductive?

Addition of reinforcement with very high thermal conductivity (ex. graphene) would enhance the thermal conductive value of the developed polymer composites. How would one cap the maximum weight...

21 June 2020 9,303 11 View

We are facing rotten problem in kesar mango near mouth of it. What may be reason for that?

We are doing natural farming of kesar mango. This year we are facing rotten problem in mango near mouth of it. Last year it seems good. For this reason we are facing problem in selling if it....

02 June 2020 5,277 7 View

Any research paper call for publication related to management or finance or economics?

It should be standard journal (Indexed)

01 March 2021 8,379 1 View

Most appropriate fit of a standard curve in an enzym-linked lectin assay?

Dear all, I have a question regarding the most appropriate fit of a standard curve in an enzyme-linked lectin assay set-up to quantify the amount of mucin secretion in conjunctival explant...

03 January 2021 1,010 6 View

Will automated killing diminish the error rate by police?

10 December 2020 5,548 3 View

Any suggestions of a free Questionnaire that measures the parent-child relationship?

Hello, I am looking for a questionnaire to use for my dissertation on the impact of parental mobile phone usage on the parent-child relationship. Does anyone have any suggestions of a...

07 November 2020 3,303 3 View

Why do some apply skills learned from soft skills training and others do not?

Be it resilience, communications, leadership, diversity & inclusion, etc., many of us have been provided soft skills training. Some of which we used and some of which we did not. If you are over...

06 November 2020 208 3 View

What does it mean to be a digital bystander in the world of learning, teaching and education?

Consider this vignette: during the COVID-19 pandemic a family are living in a big city where access to stable digital streams and affordable data bundles is not a problem. Confined to long periods...

22 October 2020 6,220 3 View

No title

18 August 2020 3,955 11 View

Can I use only a sub-scale of a questionnaire for latent class analysis? in this case each item is considered as an observed variable?

I am going to define relationship profile for my sample. This is a secondary analysis so I have to pick a a representative variable for this goal. Data is collected via Strength and difficulty...

19 July 2020 7,007 2 View

Looking for literature?

I am currently looking for relevant literature concerning international competition as I interested in the effects it may have on science diplomacy.

07 July 2020 9,713 1 View

How can i extract large dateset from social media related to Covid_19?

I want to work with social media datasets related to COVID-19. How can I extract large dataset from Facebook or twitter that contain posts related to COVID-19?

22 June 2020 8,555 5 View