I have an ethylene gas (1%) cylinder balanced with Nitrogen. Cylinder volume is 1.55 L. I want to make a standard curve with very low concentration of ethylene, in nano litres. How do I dilute the gas to reach this concentration?
I am conducting secondary research for my dissertation for undergraduation (Psychology) , what should I make sure my proposal consists of? Are there any tips I need to keep in mind?
22 February 2021 6,035 1 View
Till now i haven't got any PCR amplified vp2 gene bands on specific annealing temperature and in step up PCR.
08 February 2021 819 4 View
Greeting! For my MA dissertation, I am thinking of taking Work life balance scale by Hayman. However, I can't find the scoring procedure; also confused about the actual rating taken. If anyone...
23 January 2021 4,074 7 View
This is our first research paper and it is titled "Effect of Peer Connection on Attitude Towards School and Academic Motivation in Higher School Students During Pandemic". We aim to investigate...
30 December 2020 5,450 4 View
This is the first time I'm conducting research and I'm unsure about the result and scoring process, kindly help
27 December 2020 1,260 3 View
My plasmid (pJET1.2) contains an insert of around 2969bp. The total size of plasmid 5942 bp. I am cutting it with AhdI, SgrAI and BssHII. Desired bands are of 2969, 1632 and 1432bp. I want to...
15 November 2020 4,761 4 View
Hello, Does anyone have any idea of how this is scored? What would be the average scores? Would would be seen as very low/high? BEDEWY D & GABRIEL A. Examining perceptions of academic...
09 November 2020 2,040 1 View
The shannon wiener index and Simpson indices include the measurement of community heterogeneity. Shannon wiener index bapplied information theory. The main measuring object of information theory...
22 October 2020 1,053 7 View
I am trying to use Magnesium acetate [Mg(CH3COO)2] as the salt instead of Sodium chloride [NaCl] in my tleap. Are there any AMBER parameters for acetate ion that I can use?
12 October 2020 931 3 View
I want to know the SCI journals of Physics - Computational Physics, Soft Matter Physics, Condensed Matter Physics which provide a fast review process.
12 October 2020 8,911 2 View
I am using a 2707 waters HPLC device. When I try to inject a sample, it says missing plate or rack. I changed the needle and calibrated its position but I still get the same problem. I even get...
02 March 2021 1,408 1 View
Hello! I'll do a size exclusion chromatography, but I only have an open column, and I'll perform the peptide extraction from yeast, using buffer lysis (sodium phosphate 50 mM/NaCl 30 mM/DNAse and...
01 March 2021 2,215 2 View
Hi, I am running a size exclusion chromatography experiment with a buffer containing Potassium Acetate as a salt. I analyse these fractions through SDS-PAGE. After boiling my SEC fractions in...
01 March 2021 2,622 3 View
I am doing my thesis on the nutrient deprivation on the macroalgae Rhizoclonium sp. I will be analysing the levels over a period of roughly 5 days by HPLC-UV and GC/MS. I will be using seawater as...
28 February 2021 6,477 1 View
I have a tank which contains natural gas at 250 Bar and 293 Kelvin. I want to cool the gas in a dry-ice cooling bath to about 195 Kelvin. The gas will flow in a copper-tube through the bath with a...
27 February 2021 8,128 1 View
Hi Guys. I'm a mechanical engineer and have a bit trouble, would be very glad if you could help me with my questions. I have a pressurized tank which contains Natural Gas at 200 Bar and 293...
26 February 2021 6,253 3 View
I am trying to obtain the response and recovery times for my gas sensor device. It appears the the response/recovery times are primarily dependant on the flow rate of the gas I inject into the...
26 February 2021 1,511 3 View
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
Dear All, We are using Autodesk cfd to calculate the air flow in a single sided naturally ventilated room, where air flow depends only on buoyancy due to temperature difference between inside and...
25 February 2021 9,602 4 View
Hi, I am a chemistry undergraduate doing my dissertation project on HPLC. In my project, I need to predict the HPLC retention time of 20 aromatic molecules, the calibration set. To do this I will...
24 February 2021 2,602 1 View