Any evidence showing human eggs undergo stress in vitro?

Well, we read a lot about how in vitro manipulation of oocytes can induce stress and therefore reduce their potential or as people call it "quality". I've been looking into the studies mostly,...

04 May 2018 1,179 3 View

What is the best solvent to disperse zincoxide nanopartices for antibacterial activity?

02 March 2017 5,120 2 View

How we can stabilize and increase the zeta potential of bio-synthesized silver nanoparticles?

my samples agglomerates and show low zeta potential after a week from the synthesis? I use 50 ml of 1mM AgnO3 + 5 ml of bacterial supernatant ( PH adjusted to 9)

31 December 2016 7,902 14 View

By which mean I can increase the temperature of the AgNO3, bacterial supernatant mixture?

I do not have microwave reactor (100W 2.45 GHz ) in the lab. So, any alternatives please?

11 December 2016 8,112 2 View

What are the most actual issues in the teaching process of middle east universities?

specially for graduate programs.

02 March 2016 8,897 0 View

What do you think about MBEC assay as a method for susceptibility testing of biofilms?

Any further techniques you recommend?

01 February 2016 6,849 2 View

How to make a ready use kit for measuring a new protein found in the serum in mg/dl levels from A to Z?

My professor asked me this question and we had a long discussion about it, any Ideas? I'm thinking about how to separate and purify the protein from the serum, then make monoclonal antibodies...

31 December 2015 1,098 1 View

After synthesis of silver nanoparticles how to concentrate and wash your colloida SNPs?

How I can concentrate my particles and wash them for further testing like for TEM and EDX?

01 January 1970 3,997 4 View

What is the best concentration and volume of PVP to use it as a capping agent in silver nanoparticles biosynthesis?

01 January 1970 7,257 5 View

Why my bio-synthesized colloidal silver nanoparticles do not show any antibacterial activity?

I have synthesized silver nanoparticles by using bacterial extracellular components as the reducing agent. After confirming the presence of AgNPs in our samples I'v tested the resulted colloid in...

01 January 1970 540 9 View

Does any one know how i can prepare liver tissue with transmission electron microscope with good fixation?

i have problem in preparation of liver tissue with bad cell organelles and how i can adjust osmolarity

03 March 2021 8,890 1 View

I need to image mesoporous silica nanoparticles that are in ~100 nm size and do high resolution TEM to look at mesopores. what grids should I use?

Need to image mesoporous silica nanoparticles using the TEM. Also, need high resolution TEM images to see the mesoporous structure. Kindly suggest what kind of grids to use. Thanks, Shatadru

02 March 2021 1,787 2 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

New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before?

Question to you and THEM, the New Journal, "Integrative Psychological and Behavioral Science" -- do you not know, and have you not seen, this done before? There appears to be a core problem for...

02 March 2021 3,024 2 View

How Relativistic effects is one reason for lanthanide contraction?

The Lanthanide contraction which is the decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, is due to poor shielding of the 4f...

01 March 2021 2,272 4 View

Shall I skip the measurement model in SmartPLS?

Hello everyone, I had run a mediation model in SmartPLS using questionnaires that were already validated among my statistical population. A professor who edited my paper -though she is not...

01 March 2021 3,052 3 View

Does anyone know HRM channel in a 2 plex QIAGEN Rotor- Gene Q qPCR can be used as a separate channel?

I am going to have 3 different probes in my qPCR work that I am going to do. But I realized that the machine we have in the lab is a Rotor-Gene Q 2plex HRM Platform, saying it has green, yellow,...

01 March 2021 8,544 1 View

In Molecular Dynamics Simulation, how do I make changes to the force field according to my protein?

Hi In Molecular Dynamics Simulation, how do I make changes to the force field according to my protein? I got this error in the add-ion stage: Fatal error "./ amber99sb-ildn-HHH.ff / force...

01 March 2021 8,747 4 View

SEM or Multiple Regression for an analysis without Latent Variables?

Hello, I have three hypothesis to test, all with the same IV. I am testing if the effect of the IV on the first DV is mediated by awe. I am then measuring whether the effect of the IV on a...

26 February 2021 8,399 5 View

Why initial concentration of Pb not the same as calculated one when testing using AAS?

I am currently doing research on the adsorption of heavy metal using magnetic reduce graphene oxide. I use AAS to determine the concentration of the heavy metal. I prepare the Pb solution with...

26 February 2021 9,580 4 View