How to compute the internal consistency of a scale with ordinal items?

Hi community, I am trying to determine what is the best way to calculate the internal consistency of a newly developed self-esteem scale. I am working together with two other researchers on the...

28 February 2021 1,369 5 View

Calculating volume of DNA required from DNA concentration?

Hi I am a bit confused. They are asking me to find out the volume of DNA required in ul (a total of 30-100 ng for genomic DNA) from the DNA concentration in the nanodrop reading which was 404.8...

26 February 2021 5,029 2 View

What is th needed sample size for a one-factor convergent validity check?

Hi all, I recently posted a question about how to conduct a convergent validity analysis for a self-developed self-esteem scale. I got some very useful responses! However, something I am stuck...

01 December 2020 4,370 6 View

Is there other related study about the impact on COVID-19 on Kindergarten Academic activities?

Kindergarten learners with internet connectivity at home are also encouraged to access enrichment activities. How mdifficult the new normal is, if connection is not possible, worst if there is no...

10 May 2020 10,019 3 View

How many mice are needed for long term potentiation?

As above, we are trying to do the Long-term potentiation test using mice hippocampal slices. How many mice are needed or how many slices are needed for LTP? Can anyone help me with that?

15 February 2020 7,073 3 View

My next study will be in a child autism class course what are some of the basic questions I will see on text and test papers?

Reason I ask is because I can find people that may be interested in the subject I have submitted my self to a fund raiser for autism on the Facebook network. any people interested in donating to...

27 December 2018 5,917 1 View

Gaussian optimization terminating without error message?

Hey, I have been trying to optimize the structure of what I guess I would call a lignin derivative. The system contains 63 atoms and has no charge. I have tried using DFT and HF using a 6-31g(d)...

06 November 2018 2,781 3 View

Model 8 Hayes' PROCESS Macro SPSS Output 2?

Hi, I would welcome some advise regarding the importance of the value of the coefficient in Hayes PROCESS Macro SPSS. In output 2, of the model, the mediator effect looks significant i.e.: (B =...

07 July 2018 8,116 2 View

Any suggestions on how I can inhibit secretion of cytokines by a cancer cell line without killing the cells?

These 'secretion-inhibited' cancer cells would then be co-cultured together with myeloid cells so I am hoping the environment would not be toxic to both cell types.

23 April 2018 7,624 8 View

How to acquire dielectric constant with LAMMPS?

I'm using LAMMPS to get polymer material properties, but I can't find a command to output information corresponding to dielectric constant. Is there any way to realize that ? A thousand thanks!!!

18 January 2018 8,127 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

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

Is there any effect of different colours of light (white, red, yellow, blue etc.) on the rate of photosynthesis? If yes, why?

Light is inevitable for the process of photosynthesis reaction. Naturally sunlight plays the vital role for this process. Light may be of different colours like white, red, yellow, blue etc....

02 March 2021 7,890 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

Precipitate after adding laemmli buffer to protein solution containing Potassium Acetate?

Hi, I am running a size exclusion chromatography experiment with a buffer containing Potassium Acetate as a salt. I analyse these fractions through SDS-PAGE. After boiling my SEC fractions in...

01 March 2021 2,622 3 View

How to make fractions of chloroform extract of plant, using seperating funnel?

28 February 2021 8,466 2 View

In an eye with Tyndall, does each dot correspond to an individual cell?

When you observe the presence of Tyndall in an inflamed eye: Does each of the small floating dots correspond to an individual cell or to an aggregate of cells? Does a conventional slit lamp have...

27 February 2021 6,326 2 View

How can we theoretically calculate Elemental analysis(percentage) of atoms in covalent organic framework?

For example in one research article the Elemental analysis values of COF-TpPa-1 ( Triformylphloroglucinol (Tp) (63 mg, 0.3 mmol), Paraphenylenediamine (Pa-1) (48 mg, 0.45 mmol) are as follows...

24 February 2021 1,265 6 View

How to Control Whiteflies in coconut leaves?

24 February 2021 1,005 1 View

How can I obtain time series data by country on night-time light (brightness) ?

Hi everyone, Please, how can I obtain time series data by country on night-time light (brightness) ? I've tried, but so far all I can find are maps. I am looking for numerical data, especially in...

24 February 2021 8,625 4 View