Does mineral and organic nitrogen fertilization modify essential oil content and chemical composition in Aromatic plants?

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Can we solate viable cells from frozen xenograft tissues?

I am planning to isolate cells from frozen xenograft tissues (stored in liquid nitrogen). The tissues are stored in 10% DMSO, 30%FBS and 60% RPMI with Penn/Strep. These tissues were frozen with a...

14 December 2020 3,910 1 View

Hello Everyone, Can anyone help me in the transfection procedure of plasmid into chicken spermatozoa by electroporation?

Hello everyone, I am doing an experiment in which, the plan of work is to electroporate a clone (plasmid form) into chicken spermatozoa, which will be used further for artificial insemination....

07 September 2020 7,855 2 View

CG relaxation with B3LYP in VASP?

I am trying to CG relax a amorphous GeSe system with B3LYP and single K-point (gamma). Even though I have a 250 atom model, the calculations seem to be extremely slow. Is there a way to speed up...

23 August 2020 8,848 4 View

Can I use XBridge C18 ( 3x150mm, 3.5 um) column in a Aquity UPLC system for method development?

I have a UPLC system and XBridge C18 ( 3x150mm, 3.5 um). I am running short of time and cant procure a UPLC compatible column for the time being.

15 December 2019 8,433 12 View

Can anybody share links of dorsal hand vein images data set to download?

I need a data set of dorsal hand vein images for experimental purpose.

07 October 2019 1,438 1 View

How to dissolve PtCl2 in water?

HI, I am finding difficulty with the solubility of Platinum (II) chloride. I wanted to prepare PtCl2 in water for electrochemical application.

21 August 2019 5,444 3 View

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We have derived from certain astrometric and cosmological observations how physical constants evolve in time (https://doi.org/10.3390/galaxies7020055). The theoretical basis used is rather...

25 May 2019 8,899 3 View

How to link an enzyme to nanoparticle?

Hi everyone, I am looking forward for a solution to my problem. I want to attach an enzyme covalently on gold nanoparticle surface. If i follow EDC-NHS chemistry, the enzyme-nanoparticle complex...

14 April 2019 7,238 2 View

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Tartaric acid content by HPLC

09 April 2019 3,675 10 View

I have been doing HPLC with 0.1%OPA/MeOH.....after a couple of runs..the pressure started increasing the maximum level @ 40% MeOH?

washed the column in the reverse direction also but the same problem persists. when flow rate is reduced to 0.8mL/min from 1 ml/min...the pressure reduced to 2800 psi apprx. what more can be done...

04 January 2019 7,935 13 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

what is the simplest definition of ion exchange capacity

What this unit identifies for the ion exchange capacity ca. 0.92 meq. g-1. I am a newcomer in the membrane area. I just started. I highly appreciate your help

08 May 2021 0 0 View

How the parameters (such as Mw, Chemical bonds, polymer bland and so on) affect the mechanic property of polymer (such as storage, loss modulus) ?

Anyone can recommend any books on such topics? Thanks in advance.

02 March 2021 8,457 2 View

Why almost every element would be metallized in sufficiently high pressure and low temperature?

(This statement is from wikipedia, BTW). What is so special about metallic bond that is limiting high-P low-T state of a matter (as long as individual atoms exist, not white dwarf of neutron star...

02 March 2021 3,309 2 View

How Relativistic effects is one reason for lanthanide contraction?

The Lanthanide contraction which is the decrease in ionic radii of the elements in the lanthanide series from atomic number 57, lanthanum, to 71, lutetium, is due to poor shielding of the 4f...

01 March 2021 2,272 4 View

Ester cleavage conditions?

Hi all, I need to cleave the ester in Ethyl 2-amino-1H-imidazole-5-carboxylate to make the carboxylic acid and retrieve the product from solution to use in downstream applications of linking to...

01 March 2021 8,766 3 View

Heat exchanger with liquid Nitrogen as coolant?

I want to cool Natural Gas from 195 Kelvin to 138 Klevin in a heat exchanger by using liquid nitrogen as the coolant medium. When entering the heat exchanger, the liquid nitrogen will have a...

01 March 2021 6,450 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

What is this fern?

Please help me to identify this fern species. Thank you in advance.

24 February 2021 2,435 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