Why does a lettuce plant grown under low light intensity conditions have high transpiration and low photosynthetic rate?

10 November 2018 7,303 3 View

What is the right PPFD and nutrient solution for cultivationg Valeriana?

Greetings I am looking for a nutrient slolutions recipe for growing Hydroponic Valeriana. Does the solution need to be different when growing valeriana for its leaves rather than its roots? What...

02 March 2018 3,172 2 View

Every how many days need to pass until we can harvest and what is the production in kg/year of lettuce, peppers, kale, piny cichory?

In an NFT or Floating system(depending on the crop)How many days need to pass until harvest?After the first harvest how many dayw need to pass to harvest again?How many kgs/year we can...

04 May 2016 3,403 2 View

What amount of water should be evaporated daily from a hot desert such as sahara in order to minimize temperature fluctuations of night and day?

What amount of water should be evaporated daily from a desert location such as Sahara, in order to minimize temperature fluctuations of night and day?In theory, how much water should be evaporated...

31 December 2015 647 2 View

What is the right amount of solar energy a plant needs to grow regarding light flux intensity, uniformity, PAR, IR, UV and how can someone measure it?

Apart from the PAR a plant needs some UV and IR, how much? (regardless of species). How can i measure if the light emmited from a source is right for plant growth(light flux intensity, uniformity,...

10 November 2015 1,536 4 View

Physics: Why do we describe light by referring to its wavelength, but microwaves and radar pulses by referring to their frequency?

In physics, the description of the properties of light generally refers to its wavelength (nm), while in the range of microwaves and radio waves we refer to the frequency of a signal (e.g. kHz or...

03 March 2021 1,682 3 View

What is the production process of CaFe ferroalloys?

I looking for ferro calcium production process

03 March 2021 1,755 4 View

Is there any effect of different colours of light (white, red, yellow, blue etc.) on the rate of photosynthesis? If yes, why?

Light is inevitable for the process of photosynthesis reaction. Naturally sunlight plays the vital role for this process. Light may be of different colours like white, red, yellow, blue etc....

02 March 2021 7,890 2 View

In an eye with Tyndall, does each dot correspond to an individual cell?

When you observe the presence of Tyndall in an inflamed eye: Does each of the small floating dots correspond to an individual cell or to an aggregate of cells? Does a conventional slit lamp have...

27 February 2021 6,326 2 View

How can I obtain time series data by country on night-time light (brightness) ?

Hi everyone, Please, how can I obtain time series data by country on night-time light (brightness) ? I've tried, but so far all I can find are maps. I am looking for numerical data, especially in...

24 February 2021 8,625 4 View

What are difference between laser diodes, simple light emitting diodes and power light emitting diodes when operated in the visible spectrum ?

I want to illuminate a scene (small space) using LED to capture photographs or videos of some tiny objects inside the space. But am not sure if I should use a Laser LED, or simple LED or power...

22 February 2021 4,240 4 View

How to interpret this FTIR spectrum of pyrolyzed hydrochar?

20 February 2021 2,840 3 View

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The regenerated cellulose film was prepared by zinc chloride/H2O system. The zinc chloride had been washed away in the regeneration process, and the wet film which was not dried had uniform...

18 February 2021 9,538 1 View

How do I plot Pressure against crank angle degree in Fluent?

18 February 2021 8,390 3 View

How to get rough estimation of the concentrations of Oxygen and moisture inside the glove box?

Dear colleagues, I was just wondering if you can suggest a good method to get a rough estimation to the concentration of O2 and H2O inside the glove box as unfortunately, our glove box doesn't...

17 February 2021 1,012 3 View