In DFT or HF, is it more expensive to calculate the H matrix or to diagonalize it?

I was wondering: in common DFT (or Hartree-Fock) algorithms/codes, and in particular in solving the Roothan equation, what is the most computationally expensive part: 1- evaluate all the terms of...

01 February 2021 396 2 View

Suggestions for transfecting plasmids in ME-1 cells?

Hello everybody, I am currently working with recently purchased ME-1 cells. I was wondering if anyone that has experience transfecting this cell line, or even lines that are similar, would be...

08 October 2020 9,943 2 View

How to run a statistical comparison of same group and 2 conditions in fMRI?

Hi everyone, I have some doubts about which statistical test to apply in order to test the probability of eventA to happen at the same time of non-eventB. Basically I have my fMRI group with...

14 September 2020 1,887 3 View

Is there a difference between using potassium lactate or sodium lactate as preservatives in a product which will be used as intervaginal device?

If anybody could advise from medical or chemical prospector

23 March 2020 9,971 3 View

How can I effectively inoculate Pseudomonas syringae pv. actinidiae in young kiwi plants?

Hi everyone. I have to start a trial of efficacy of bacteriophages against the kiwi bacterial canker, but before I need an effective method to inoculate my 15 6 months old kiwi plants with...

24 November 2019 383 3 View

Is there a device which can dillute a gas-sample before it enters a continious-flow gas-analysator?

I want to measure gaseous NH3 emitted from slurry with the gas-analysator G2508 from Picarro. I expect the concentration to be ten and more times higher than the operating range of the...

02 October 2019 8,276 3 View

How to test single hypothesis with various observation samples?

Hello, I'm conducting OLS regression in order to find value drivers for abnormal returns. My model includes 6 different independent variables, and i'm forming 20 subsamples (observations). My...

03 April 2019 272 1 View

What statistical test can I use to test hypotheses with a limited sample size?

For my bachelor thesis, I'm seeking to prove that the degree of adoption of value based pricing strategy has a positive effect on the innovation performance of SMEs. At first, I thought to use a...

05 June 2018 8,364 17 View

Any interested in mixed cryoghlobulinemia in Egypt ?

I am interested in the epidemiology of mixed cryoglobulinemia (MC). Japanese people infected by HCV do not develop MC, therefore MC seems to be confined to caucasians. Nobody knows what happens in...

22 July 2017 782 3 View

Which is a correct stainless steel for a vessel with maximum stress of 380 MPa, decent corrosion resistance and good machinability?

04 July 2017 6,719 5 View

After a reference from Int J Body Compos Res, can any body help?

Hi, I am after the reference below, my library says it cannot obtain a copy either locally or internationally, any help appreciated! Chris Wang ZM, Heshka S, Wielopolski L, Pi-Sunyer FX, Pierson...

03 March 2021 6,193 1 View

How to increase a model accuracy ?

dear community, my model is based feature extraction from non stationary signals using discrete Wavelet Transform and then using statistical features then machine learning classifiers in order to...

03 March 2021 6,994 5 View

What are the most reliable approaches to extract key continuous frames from a video, with complete automation?

I have an input video, of skin (from a microscope that means it is magnified such that blood capillaries are visible). The idea is to extract 15 sec of continuous frames from a video of 1 min,...

02 March 2021 2,735 2 View

How to quantify carbon deposition on CuZnAl catalyst?

Dear All, I want to quantify carbon deposition on the surface of the CuZnAl catalyst. I have tried thermogravimetric analysis, but I've got weight gain as the active Cu- get oxidised. Does anyone...

01 March 2021 1,907 3 View

Why Trivalent chromium start precipitating above PH 5 ? Moreover discuss difference between adsorption of chromium and precipitation of chromium ?

I am a student of MS Environmental Engineering and started my research phase. I am working on metal removal ( chromium iii ) by using activated carbon prepared from the agricultural feedstock. So...

01 March 2021 5,475 2 View

How can extract ciprofloxacin hydrochloride disolve in water er to organic solvent such as dichloromethan or any other solvent?

I need a procedure to extract the ciprofloxacin hydrochloride from aqueous solution by using dichloromethane in detail,. I thank you very much.

01 March 2021 4,306 1 View

Which bacteria are suitable for quorum sensing screening?

I want to find a quorum sensing inhibitor from plant extracts. Klebsiella pneumoniae, Moraxella catarrhalis, Staphylococcus aureus, and Streptococcus pneumoniae. I looked for these strains...

01 March 2021 7,675 3 View

How to perform statistical analysis of coefficients extracted from transform techniques?

I am studying the potential of DCT and FFT coefficients extracted from a signal to classify the different objects that emit the signal. I applied the Shapiro-Wilk to confirm that data was not...

01 March 2021 8,079 2 View

Any research papers for extraction of nutrient deprivation on macroalgae? Analysed by HPLC-UV and GC/MS. Possibly from macroalgae genus Rhizoclonium?

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

How to remove fatty material from plant extract?

The resultant solid was partitioned three times with 250 ml of petroleum ether (40-60/c) to remove any fatty material and evaporated to dryness.

28 February 2021 9,464 2 View