I want to performe MALDI-TOF MS for bacterial identification, I would appreciate it if anyone can tell me the matrix solution preparation protocol ?

based on what I've studied on multiple papers, for peptide and protein identification Alpha-cyano-4-hydroxycinnamic acid (CHCA) is an appropriate matrix to use, I also know that the CHCA powder...

26 February 2021 6,799 3 View

How to achieve the sensitivity diagram of a sensor in CST?

I wanna design a sensor in CST 2021 for the first time and I don't know how to achieve the sensitivity diagram of the sensor in CST. Could you plz help me to do that? I appreciate your response...

26 January 2021 6,864 1 View

What kinds of potential genes could be expressed in frogs exposed to chytrid fungus in different environmental conditions ?

I need an applicable molecular biomarker like expressing the genes in frogs who expose to chytrid fungus in different environmental stressors. Indeed, what kinds of genes I should notice in frog's...

25 January 2021 7,718 2 View

How to select the most non-correlated samples within a dateset?

Dear researchers How to select the most non-correlated samples within a dateset? Considering that the samples are time-series of length l within m different time-series. To more clarify the...

13 January 2021 741 6 View

DSC test- Glass transition temperature of the electrospun PA66 nanofibers?

Hello Everyone, I did several DSC tests on the electrospun PA66 nanofibers to obtain the glass transition temperature. According to the material datasheet, the Tg point of PA66, as cast, is around...

13 December 2020 1,506 2 View

How to create a sag and swell detection in the DVR applications?

I have created a three-phase cascaded h-bridge inverter at Simulink with the SHE-PWM technique, and I want to test it in the DVR applications. How can I design a controller for that in the DVR...

13 December 2020 735 3 View

Degenerated semiconductor (Burstein Moss effect) with unchanged band-gap?

Is it possible to produce a degenerate semiconductor using a dopant agent that results in increasing the electrical conductivity, but the optical band-gap remains unchanged? In such a situation...

11 December 2020 8,338 13 View

Which statistic software can give me a relationship for multivariate function?

Hi friend I have some data and they influence on each others and I draw their graph in excel but excel can't give me a relationship for multivariate function. the regression of these data in excel...

29 November 2020 9,371 9 View

A paper may be rejected because of several reasons?

In my case, I have received rejection after seven months from submission to journal without reason or editor comments (decline). Moreover, without being reviewed by an expert scientist reviewer,...

29 October 2020 5,437 4 View

Do scalar-tensor-vector gravity theories violate the Bekenstein-Hawking area law to compute the entropy of black holes?

I am looking for the thermodynamics of the cosmological black hole in scalar-tensor-vector gravity theories. I know how should I write and find the thermodynamical quantities and equations for...

26 September 2020 6,383 3 View

Does different dilution factors affect negatively on NH3 reading ?

I have a sample of treated water sample & asked to obtain ammonia conc. in sample using a machine with 5-25 ppm detection range. However, upon testing with different dilution factors, all...

27 February 2021 8,483 3 View

By which mechanism does potassium hyrdoxide works as an activator in the preparation of activated carbon?

Activated carbon is prepared from biomass using KOH as the activating agent. What is the possible reaction between KOH and the biomass?

14 February 2021 8,095 4 View

Can I simply dilute 25% NH3 solution to 10% solution by pouring water in tank and circulating with pump?

Is there any heat of dilution which I need to take care by putting some circulation cooler? Will there be any significant ammonia emission in the process?

09 February 2021 5,943 2 View

PEG coated Fe3O4 nanoparticles in aqueous NH3?

Hello, I synthesized PEG coated Fe3O4 nanoparticles by coprecipitation methods and I would like to ask whether they can be dispersed in aqueous NH3 since they have a PEG coating and theoretically...

06 February 2021 5,217 4 View

How does a pH 13 buffer solution containing NaOH/KCl work?

pH 13 Buffer solution is prepared from a strong base sodium hydroxide and potassium chloride salt. However a buffer contain a weak base or weak acid with their salts. What is the purpose of the...

26 January 2021 9,154 1 View

Does anyone know the pH-differential method?

I use the water method to extract the anthocyanidin from Peristrophe bivalvis (L.) Merr leave, then dilute 20 times with 0.025M potassium chloride, pH1.0 and 0.4M sodium acetate buffer, pH4.5...

20 January 2021 8,305 4 View

How we can isolated MnO2 from solid organic product ?

The compound 1,4-dihydro pyridine oxidized in the presence of potassium permanganate and microwave. After oxidation, the organic product and manganese dioxide are formed, and the two substances...

09 January 2021 5,358 4 View

What is the Role of temperature In Hummers method for the preparation of graphene oxide?

04 January 2021 5,033 2 View

Can one eat Muriate of Potash Fertilizer?

What is edibility safety of fertilizer-grade Muriate of potash? Muriate of Potash (MOP) is essentially KCl with often red rust from iron oxides. In order to balance excess Na and deficit K...

25 December 2020 6,179 6 View

Best Way to Preserve Nitrifying Bacteria in Liquid Culture?

I have a heterogeneous culture of nitrifying bacteria that was originally isolated from the field. It has been kept alive for several months in a bioreactor. I want to pull some of this...

18 December 2020 5,411 4 View