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Questions related to Chemistry
For preparing PVA thin films I've tried dissolving PVA in various solvents in all suitable temperature conditions. Even stirring overnight, it still has not dissolved. Kindly suggest the possible...
19 September 2023 3,141 3 View
What type of reaction always has oxygen as a reactant and type of chemical reaction where a substance and oxygen react during burning to form a new product?
17 September 2023 5,936 0 View
Which energy is the energy needed to start a reaction and substance that speeds up a chemical reaction by lowering the activation energy?
03 September 2023 9,561 5 View
We have a problem with Diltiazem 60 tablets. We have the Dissolution profile of Diltiazem tablet cores according to the USP monograph (Diltiazem Hydrochloride Tablets). Tablet cores passed the...
02 September 2023 8,278 1 View
Is pressure the only factor that affects the solubility of a substance and why does pressure have no effect on solubility?
02 September 2023 6,998 3 View
Hello everyone I am in urgent need of an electronic copy of this technical report: (A REVIEW OF SOIL CORROSIVENESS WITH PARTICULAR REFERENCE TO REINFORCED EARTH). Help me, please!
31 August 2023 828 2 View
biotechnology
28 August 2023 2,128 1 View
Is there any solver available in MATLAB, MATHEMATICA or PYTHON PACKAGE?
22 August 2023 6,139 4 View
Lab scaled biofilm reactor are operated for treatment of wastewater with initial pH = 7.44, the pH of effluent after treatment from reactor increased to 8.15. The percentage removal of COD is...
22 August 2023 3,529 6 View
because both will act as to improve organic carbon in soil
21 August 2023 8,126 1 View
How does green technology reduce pollution and how can green technology be applied to overcome the effects of global warming?
16 August 2023 5,584 5 View
The density of filler is 5g/cm3 and that of polymer is 1g/cm3. I need to prepare a composite with 45 vol% of filler.
16 August 2023 1,450 6 View
I did TGA of a LiFePO4 (LFP) sample and obtained a 3% of weight increase (heating rate of 10ºC/min till 700ºC and cooling down at 10ºC/min). I repeated the analysis several times, both in argon...
11 August 2023 4,646 4 View
Greetings, Recently, I synthesized magnetite (Fe3O4) nanoparticles, and I want to find out the Youngs modulus as well as uniform stress deformation mode (USDM). To calculate those, I need the...
09 August 2023 247 0 View
Hello. I've synthesized a copolymer hydrogel using acrylamide and gelatin, following the method described in many studies. During this process, I placed the monomer precursor solution between...
03 August 2023 2,661 3 View
I am using isothermal titration calorimetry to measure the binding affinity and stoichiometry between a small molecular weight poly(amino acid) (3500 - 4500 Da) (SYRINGE) and high molecular weight...
03 August 2023 6,547 8 View
Dear Researches I have a some doubt,recently I am working on fabrication of PDMS-based composites. My question is when I mix MXene and SrTiO3 like particles with PDMS and make a cast film....
02 August 2023 1,911 2 View
Should I test for unit root the variables when I estimate the parameters with Bayesian technique ?
27 July 2023 2,260 2 View
After had been removed BOD and TSS, the amonia removal is required biologically. Are there problems to growing nitrifying bacteria for nitrification and difficult to settle it in sedimentation tank?
27 July 2023 2,344 4 View
Write your thought...
25 July 2023 9,857 6 View
Message for volcanologists. There was an unusual anomaly yesterday afternoon. I recommend that you check for local signs of a future nearby (in time) volcanic eruption. (not later than 1 - 7...
19 July 2023 2,832 1 View
Hi everyone, Does anyone know a technique to make PPS or PEI more flexible. I mean reaching at least 300-400% elongation at break. suggesting any rubber or TPE to blend with this material would...
17 July 2023 4,042 2 View
The fiber content in an E-glass fiber-reinforced polypropylene is 30% by volume. How many kilograms of E-glass fibers are in the composite for every 100 kg of polypropylene?
17 July 2023 5,375 3 View
Please in an experiment using foliar Zinc fertilizer and rice I obtained soil from a depth of 20cm and placed 5kg of the soil in pots of 29cm in height, diameter 32.5 cm, radius 16.25 cm and...
03 July 2023 9,600 1 View