Call for reviewers & manuscripts?

Dear Professors and Researchers Peace be upon all of you. It is a great pleasure to announce that The Egyptian Journal of Community Medicine is no available at this link. All publications are...

29 December 2019 5,875 1 View

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hello every one I want to synthesis the CuInSexS2-x QDs and as I am elementary in chemistry, I want to know that how to determine the sub x in such structure in practice (mean in the synthesis of...

24 November 2019 2,100 1 View

Does glycidol react with OH or carboxylic group in citric acid? which one has higher tendency to react with epoxide ring?

As you know, citric acid has three carboxylic acids with pka: 3.13, 4.76, and 6.4 as well as a hydroxyl group with pka 11.6 to 14.5 (depending on the reference). On the other hand, OH has a potent...

10 November 2019 9,900 2 View

How to chose semiconductor material for synthesis of colloidal QD?

Hello I want to know, how to chose appropriate semiconductor material for QD synthesis? it is base on bandgap? or something else? how scientists know that the I-III-VI elements (for example) are...

07 November 2019 662 2 View

Large chi value?

In a study on a large sample size, while testing the association between 2 variables using chi square with DF=1 Chi square value was very high (more than 400) Is this acceptable? How to interpret...

10 November 2018 4,865 3 View

How to enter a varibale measured in different levels into SPSS?

I have a data set one of the variables is the serum level of specific antibody. Measured in quantitatively. Some levels are expressed as undetected, 1000. How to enter this...

06 July 2018 3,960 2 View

Is there any compound/method to promote chlorophyll stability (color changing) under ethylene gas treatment?

I need a material to add to chlorophyll directly to prolong its color stability.

21 April 2018 9,071 1 View

How to calculate sample size for testing the validity of a new screening test in hospital setting?

How to calculate sample size for testing the validity of a new screening test in hospital setting?

03 April 2018 1,761 0 View

How can I carry out convergent or discriminant validity for a questionnaire ?

16 November 2016 9,341 4 View

How to compare two samples of frequencies ?

20 August 2016 9,951 5 View

Is it possible to have two luminescence bands of the same peak position but with different intensities in single spectrum??

Hi! If it is possible to have two luminescence bands of the same peak position in a spectrum, what is the reason behind formation of two separate bands instead of one? This phenomenon is related...

26 February 2021 4,963 5 View

Standard curve shifting over time. How do I stabilise the ELISA?

24 February 2021 1,365 3 View

Has annyone try to reuse EveryBlot Blocking Buffer (Bio-rad) for fluorescence western blotting?

Hello to every one, Our lab has recently switched our western blot technique from chemiluminescence to fluorescence. Therefore, we have to optimize the blocking buffer. We have successfully try...

05 February 2021 7,886 1 View

How to use Image Lab to take an image for the bands and the ladder in the same image merged together in Western Blot?

Hello everyone. I was trying to use Image Lab software to take an image of both the ladder and the samples merged together in one image to see the position of the bands according to the ladder MW,...

04 February 2021 9,996 2 View

What are the conflicts between EIA and environmental engineers and lawyers?

Environmental Impact Assessment (EIA) does not live up to the expectation of environmental lawyers and environmental engineers. In your own opinion, how can the EIA process therefore be made more...

03 February 2021 1,329 6 View

How to prepare secondary antibody from lyophilized antibody?

So I'm new to lab research and learning Western Blots these days. I ordered my secondary antibody and it arrived in a powdered form. Here is the...

27 January 2021 5,402 3 View

Colorimteric and enzymatic method ?

First of all, thank you for your consideration about this question. I've been working on development of in-vitro diagnostic medical device as research engineer since 2013. Especially, my major is...

14 January 2021 3,885 4 View

Which syringe filters (e.g., PTFE, MCE, PVDF, CA, PES, etc.) are the best to filter TBS/PBS buffer (pH 7.5-8.5) and glycine buffer (pH 2-3) solutions?

I intend to purify antibodies from serum using the affinity procedure, and I need to filter the binding (TBS/PBS) and elution (Glycine) buffers before applying them to my solution.

06 January 2021 5,769 3 View

Greiner Bio or Corning Costar plates for ELISA?

09 December 2020 237 2 View

Why use STOP solution in ELISA?

At the last step for data analysis, we always use a STOP solution to stop the TMB oxidized by HRP. Why do we have to stop the reaction? Couldn't we measure the color wavelength of...

17 November 2020 5,177 3 View