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Questions related to Mass
Simulations based on Newtonian gravitational theory predict the perihelion advance or precession of Mercury’s orbit to be approximately 532 arc seconds per century [see reference 3 below]....
22 November 2022 5,279 22 View
The last Monday, my assessor received these cells in a T-75 flask with RPMI media with 10% FBS and 1% antibiotic, but in the lab only have DMEM media, and we were culture the cells with this...
19 November 2022 403 0 View
Dear Colleagues, Please give me a hint how to expand the process window of laser paint etching on painted plastic parts? The task is to reduce the sensitivity of the laser process to variations in...
28 October 2022 5,515 2 View
I usually just calibrate in the 300 to 1800 amu range in Positive Ion mode, and mostly run samples in Positve Ion mode. Sometimes I will double check a result in negative ion mode but get...
18 October 2022 6,361 5 View
I do not find many astrophysicists and cosmologists engaging themselves with the question of the probable origin or origins of the cosmos. Even when a work is purportedly to be on this theme, the...
14 October 2022 287 93 View
Hi, I have few photochromic powder in crystal, and some of them are photochromic, some are not. I want to correlate the photochromicity with the way of crystal packing. Therefore, I ran a...
10 October 2022 5,207 0 View
Hello Can anyone help me how to read nitrate absorption by crosslinked pva nanofibers in uv-visible? The nanofibers prepared by crosslinking glutaraldehyde, however, the absorption value at 220...
21 September 2022 221 1 View
I have read a few papers where the O 1s energy loss was used determine the band gap of the material. However, will the measured band gap be electrical or optical band gap of the material?
06 September 2022 6,245 4 View
Is it possible the chelation formation (complexation) reaction between boric acid (H3BO3) and calcium citrate (Ca3(C6H5O7)2).? If so; - How do I observe - How do I characterize - What is the ratio...
02 August 2022 7,943 0 View
I have been facing this problem for a while. The gold nanorods/nanoparticles and silver nanoparticles stick to the magnetic stirrer while stirring. The stirrers were cleaned with aqua regia, still...
17 June 2022 2,432 4 View
I am trying to simulate methane combustion in an industrial high-pressure gas turbine combustor using the species transport model in fluent with detailed GRI mech 3 mechanism but I get no...
30 May 2022 810 3 View
Can anyone help me to get standard mass spectral graph for estrogen and its compounds ?
17 February 2022 1,195 1 View
Suppose a particle mass is m=m_{0}[ 1+ i\beta x] where \beta
11 February 2022 2,359 25 View
Mass (m) becomes Energy (E) as E = mc^2. But if the speed of light depends on the density of vacuum space (dvs), it would impact the speed like this: 'the speed of photons' / 'the density of...
06 February 2022 6,115 11 View
Dear all, Im running an Inject & recover experiment on Biacore T200. I have a couple of different analytes to inject on sensor and then recover for mass spec analysis, each analyte to...
04 February 2022 4,805 3 View
If qt increases with increased dosage, what could be the reasons? Secondly, how adsorbate mass affects qt?
27 January 2022 2,905 1 View
Secondary Structure of a protein is a parameter of its compactness. For example, if by any perturbation, helicity decreases, size (volume) of the protein increases. Except secondary structure,...
27 January 2022 3,811 3 View
Years back high pressure chemicals are introduced for the breakage of rock mass instead of explosives. The chemical takes some time to expand within the rock mass and also have definate effect on...
25 January 2022 2,831 0 View
Hi, I am working on PBI membranes for FC applications. I have prepared a PBI polymer using the monomers 3,3-diaminobenzidine and isophthalic acid. When I try to cast it as a membrane the polymer...
23 January 2022 6,899 3 View
Land masses were not like today all the time. They changed with time, so if we extrapolate past distribution we have to map it in accordance past land-mass distribution. GPlate is one option but...
20 January 2022 7,958 4 View
Actually, I am simulating a problem having cuboid shape geometry. It contains two inlets and one outlet. No. 1 inlet = hydrogen is flowing inside the geometry with a known value of mass flow...
17 January 2022 6,841 3 View
Hi All, My final aim is to synthesize Hexapeptide VVVVVV(Valine-6). This is the third time I am synthesizing, but I am not getting my target product checked by Mass Spectroscopy. I micro cleaved...
14 January 2022 2,905 0 View
The gel mass fraction is an important indicator for the preparation of the hydrogel
09 January 2022 783 3 View
-The atomic radius of lanthanum is approximately 0.35 nm, as opposed to 0.3 nm for water molecules. -Seawater sample also contain organic contaminants such as Mg, Na, etc. some of them with the...
03 January 2022 6,488 4 View