I am looking for diesel generator protection system in a solar hybrid system?

For hybrid solar project I am looking for a diesel generator protection system.. The solar system runs normally connected to the grid and excess power is normally exported to the grid. My...

07 November 2020 9,642 5 View

What are the cost differences between Tuned Liquid Dampers versus (Active) Tuned Mass Dampers in large structures?

I am doing research on the application of (Active) Tuned Mass Dampers and Tuned Liquid Dampers in wind turbines. One of my interests is the cost of these two technologies, especially the...

26 April 2020 7,613 4 View

How long does Apex Taq RED Master Mix, 2X remain viable after opening?

The manufacturer's data sheet says the unopened vial lasts for 2 years at -20 C and that the mix is stable at 4 C for at least six months. The dye we are using has been opened and has been kept at...

10 June 2018 3,902 3 View

Does anyone know how I can measure if anyone is alert (opportunity recognition/entrepreneurial alertness)?

Does anyone know how I can measure if anyone is alert (opportunity recognition / entrepreneurial alertness)? In other words is there a measurement tool available, preferable questionnaire, that...

06 December 2017 4,820 1 View

Who likes to participate in the development of evaluation instrument for social agents?

01 January 1970 3,428 3 View

Are there already serological tests available that accurately differentiate between abs generated against SARS, MERS and SARS-CoV-2?

I would like to analyse some serum samples for presence of antibodies specific for the different coronaviruses SARS, MERS and SARS-CoV-2. Given the potential for cross-reactivity between...

01 January 1970 2,657 5 View

Does the pressure(-600 mmHg) affects pH?

When I conducted the degassing experiment using decompression under anaerobic condition(and I used ferrous based chelating agent), the oxidized ferric were observerd. So, could you tell me the...

03 March 2021 4,892 5 View

Irradiation data for JAPAN?

Hi, Could you help me to get the latest (2019, 2020) solar resource data for a particular site in JAPAN? PV GIS and NSRDB data are not in reach to JAPAN, I'm looking for some other database for...

03 March 2021 961 3 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Why are the velocities so high in my Boussinesq approximation Fluent simulation?

Hello, I have a mechanism where air rises due to convective flows. In this simulation, nothing is driving the air except this. I understand that the Boussinesq approximation only works for small...

02 March 2021 4,910 3 View

12% ledeburitic cold work tool steel, etched for revealing retained austenite, any help for clarifying?

Hello everyone. Given microstructure image belongs to a 12% ledeburitic cold work tool steel (annealed and tempered). The sample was etched with picral (100 mL ethanol and 4 g picric acid). I...

02 March 2021 4,119 3 View

Why Austenite grains in steel show much more twinning than ferrite grains?

It is oftentimes said to be a distinctive metallographic trait that differentiates a fully austenitic and a fully felly ferritic steel without etching that might distinguish between two. Why...

02 March 2021 728 2 View

Help request in CST microwave?

im working now on TPV solar cells and metamaterials and i realy need our help in CST microwave i have a tpv cell simulation and i want to extract particullarly the absorbtion of only the active...

02 March 2021 2,246 2 View

How Can I bring as much common elements in steel as possible to calculate stable phase(s) in OpenCalphad?

As I was tweaking step-by-step OpenCalphad6 Macros step1.ocm involving phase and thermal property calculation of a High-speed steel, I could not incorporate more than 6 elements in the steel...

01 March 2021 8,840 1 View

I need to accelerate corrosion in steel parts that are used in a salt-water environment. Is there a technique for doing so?

I have a structure that employs d-ring swiveling tie-downs that corrode during use and become "frozen". I have sample swivel assemblies that I wish to corrode to see if I can free them using one...

01 March 2021 3,739 3 View

Anyone found any research papers on solar furnace design calculations (for solar concentration)?

I am thinking about working on solar furnace with heliostats that concentrate sunlight and heat molten salt, but currently no luck with research. Not a lot of papers based on the subject. (check...

01 March 2021 5,023 5 View