Is there a way to use waveguide ports for circular antenna design in CST?

Hi, whenever i use circular array i get this error "Waveguide ports must be aligned with Cartesian coordinate planes for the transient solver" Does anyone use circular array with waveguide ports?...

09 February 2021 3,609 8 View

[JAVA]How to fix exception in thread error when using array of objects?

I am doing atm gui for my project in java. In my opinion using array of objects is the best option to store customer data. When i try to access it in an ActionListener method, i get this error:...

06 January 2021 6,975 4 View

How to simulate circular array of antennas in CST?

02 January 2021 7,530 6 View

How can i measure Qmax values of methylene blue adsoprtion correctly?

Hi everyone, I am studying on the adsorption of methylene blue using inorganic based adsorbents. As a result of my study, although the amount of adsorbed dye is approximately 95%, I found that the...

09 September 2020 7,644 4 View

How to understand if CPU is thorttling back?

Hello everyone, When I have tried to solve quick example on Ansys, iterations took too much time and I think my CPU behaved strangely. The frequency is stable but the CPU %use is waving between...

16 March 2019 7,055 3 View

How to prevent carbon cloth/carbon fabric from fraying?

Carbon cloth/carbon fabrics may expose to washing, mixing, hydrothermal and/or high temprature treatments and and consequently they fraying easily. How can i prevent them fraying? Or is there...

19 December 2018 7,083 4 View

Does the ambient temperature (temperature of the lab) affect HPLC operation?

HPLC that I am working with operates in a laboratory which doesn't have any air conditioner and thus, at a temperature of 31 degrees Celsius. Besides, the equipment is exposed to direct sunlight...

30 August 2018 5,086 6 View

Anybody used MethylEdge Bisulfite Conversion System, Promega?

05 December 2016 407 1 View

What are the factors affecting the adhesion strength between metal/oxide and metal/nitride layers?

Microstructure, roughness, the enthalpy of formation of an oxide compared to the adjacent layer are some of the factors affecting the adhesion strength. Is there a specific variable for...

25 September 2014 549 7 View

Is anybody familiar with water removal from nanoporous thin films in the glovebox (N2) by heating? The H2O and O2 content is <1 ppm? The min T needed?

I assume it should be less than in ambient conditions. Since glovebox atmosphere contains trace amounts of O2 and H2O, thermodynamically the temperature needed to evaporate H2O should be less. Do...

21 February 2013 5,731 5 View

What kind of fluid could I use for a pitfall trap that also does not invalidate molecular testing?

Hi, I want to start testing pitfall trap to obtain ants samples, but I need to conduct molecular analysis on those insects. So, what kind of fluid can I use? Ethanol expires too early and I need...

03 March 2021 5,978 5 View

Does Napabucasin soluble in dichloromethane and in ethanol?

I need to prepare a solution of Napabucasin (inhibitor of cancer cell stemness) in dichloromethane. The drug is expensive, so maybe somebody already tried to do it. If it is soluble, what is the...

02 March 2021 9,945 3 View

How can i resolve the "final solutuin is not converged" error in Comsol for my heat transfer simulation??

I have been trying to simulate heat transfer problem in Comsol 5.5 for long time but it always throw an error stating: "Failed to find a solution. Maximum number of Newton iterations...

28 February 2021 8,626 3 View

Why am i not getting solid after reacting APTES with salicylaldehyde?

The reaction of APTES with salicylaldehyde in ethanol leads to the formation of imine compound yellow solid which is mention in literature, but I am not getting yellow solid I don't know why? when...

28 February 2021 2,955 2 View

How to best wash a 96-well plate containing microplastic?

I am planning my protocol for my dissertation for an experiment quantifying bacterial (E. coli) biofilm formation on micro-plastic (5mm discs of polyethylene bags) by conducting a crystal violet...

23 February 2021 7,868 2 View

Are there any known solvothermal methods to synthesize MoS2 nanosheets using solvents other than water (like ethanol/ethanol-water mixture) ?

I need to synthesize MoS2 nanosheets by alternate methods without pure water as a solvent.

22 February 2021 9,246 1 View

What is the best etching method for Mg-Ca alloy?

I have used Picral etchant (4.2 g Picric acid, 10 mL Acetic acid, 70 mL Ethanol, 10 mL distilled water) but it didn't work. Is there any alternative?

21 February 2021 2,558 5 View

Can ethanol be used as an analgesic?

If ethanol has analgesic properties, why isn't it used for clinical purposes?

18 February 2021 8,227 4 View

What is the best way to isolate Hydrolysable tannins on Sephadex column?

I am currently preparing to isolate polyphenolics (Hydrolysable tannins) from aqueous extract of a plant. I want to set up a small sephadex column to guide the major isolation on a laerge...

18 February 2021 1,455 3 View

Can any suggest me good method of GC MS for the separation of Flavonoids?

I prepared the ethyl acetate, ethanol and butanol fraction from the ethanol extract of seed for isolation of Flavonoids. Amongst them ethanol fraction showing shinoda test positive for polar...

13 February 2021 8,263 3 View