How to calculate the percentage of atomic composition for concrete ?

I want to to calculate the percentage of atomic composition for concrete like that: H=2, O=50, Na=15

11 December 2018 4,970 3 View

There are any ASTM or British standards of porosity measurement for the hardened concrete?

I have searched about any standards of porosity measurement for the hardened concrete, but I didn't find any thing.

08 September 2018 3,350 3 View

How to calculate the serpentinization degree % in the serpentine?

I want to calculate the degree of serpentinization in more than one type of serpentine

08 September 2018 477 0 View

Until now there are not any papers explaining the relation between crushing value of aggregate and compressive strength of concrete, I'm right?

I didn't find any papers explaining the relation between crushing value of aggregate and compressive strength of concrete

05 June 2018 2,347 15 View

Are there any suggestions for references about the relation between porosity and void ratio in concrete?

I want references about the relation between porosity and void ratio in concrete.

04 May 2018 5,441 6 View

What is the interpretation of presence of CH3 functional group in the IR ?

what is the interpretation of presence of CH3 functional group in the IR in treated silicate material with NaOH although the ore (original material before treating) did not contain any carbon ?

03 April 2018 6,745 6 View

Are these ingredients of concrete indicated right?

This is an SEM image of concrete and I want to know if I indicated the components right or wrong?

03 April 2018 1,009 0 View

Is the aggregate crushing value (ACV) test is a an indicating method for aggregate strength?

I want papers about ACV is indicating method for aggregate strength

01 February 2018 5,270 7 View

There is a calculation method for finding the the void ratio knowing the porosity and water absorption in concrete?

I want to theoretically calculate the void ratio knowing the porosity and water absorption?....except for ASTM CODES?

01 February 2018 4,049 0 View

Is it possible for turquoise to have a violet color?

Turquoise has a blue and green colors, but I see some have a violet and other colors, so it is possible ?

31 December 2017 5,255 0 View

Is CD44 degraded in lysosome together with hyaluronan after CD44 mediated endocytosis of hyaluronic acid?

Also when RHAMM binds hyaluronic acid, they get internalized, will RHAMM also be degraded? Or both CD44 and RHAMM will be transferred back to the cell membrane? Asking for breast cancer cell line...

01 March 2021 8,169 2 View

LEDs on Vis Light photo degradation of MB water sol via N doped TiO2 in a mini flume?

Good day to all, I have no experience with light emitting diodes. I am building a glass mini flume to demonstrate the photo degradation of Methylene Blue in water running over self cleaning...

26 February 2021 4,026 5 View

Why do a weight decrease for thermal degradation in nitrogen gas condition?

Hi all The question is related to TGA(Thermogravimetric analysis). Thermal degradation easily understood but why do samples weight decrease? altough just binding is broked, the weight of...

26 February 2021 1,100 5 View

Steps to calculate activation energy by coats & redfern method?

I'm a chemistry student and I'm researching the kinetic degradation of mixed plastic waste. I'm having trouble calculating the activation energy by the coats & Redfern method. The data that...

24 February 2021 974 1 View

RNA degraded after good nanodrop readings?

23 February 2021 8,850 2 View

How to calculate the fraction metabolized of a drug by an enzyme using clearance(ml/min) values of the metabolite formed?

I am trying to find the fraction metabolized of a drug by CYP and UGT enzymes. I am unable to get the values of fraction metabolized (Fm) directly from the literature. Can we calculate the Fm of a...

21 February 2021 5,379 2 View

Mixture neutralization after Boc deprotection ?

I am performing a Boc-deprotection with HCl in organic solvent (dioxane or Ethylacetate) but would like to isolate the free amine. Several problems: - Neutralizing with inorganic base as NEt3...

18 February 2021 3,366 3 View

Onset of Photo Oxidation in Polymers?

Hi! I am looking for some specific information in regards to the minimum amount of UV intensity required to begin the photo degradation process in polymers. I understand each polymer is...

15 February 2021 7,703 4 View

How long does it take to design and validate transition state analogue inhibitors?

Hi, I'm asking from the point of view of designing a research plan: How long (approximately) can it take to determine the transition state structure of an enzyme substrate using kinetic isotope...

14 February 2021 2,610 1 View

Kinetics of Enzyme production in Recombinant E Coli?

Hello, I am trying to find kinetic information (such as rate of enzyme production etc.) on the expression of taq polymerase in E-Coli after inserting a recombinant plasmid. Any help would be...

12 February 2021 1,386 3 View