How to size battery banks?

I am designing a small grid connected solar PV power-plant. As the battery's capacity is specified in Ah and demand in kWh. What is the best way to size the battery bank? I have battery price in...

28 February 2021 1,638 3 View

Do you think there is cognitive oversaturation in the current pandemic? What impact can this have? And other manifestations?

Dear colleagues, Do you think there is cognitive oversaturation in the current pandemic? What impact can this have? And other manifestations? The question is mainly aimed at adolescents (pupils,...

23 February 2021 7,796 4 View

What is the standard protocol in doing replicates for C. elegans lifespan assay on solid media (thru worm picking)?

I would like to know what is the standard protocol in the number of worms per plate and number of plates per concentration of extract X in a lifespan assay done in solid media and not automated...

23 February 2021 9,933 1 View

What is the possible cause of MSCs low growing?

Hello Everyone, We are inexperienced in culture of MSCs trying to grow a sample from BM of a mare. It is the second time that after preparation of new medium (DMEM-F12 with high glucose - 10% Hy...

07 February 2021 9,989 7 View

What is better to buy a real-time pcr machine or an endpoint?

Hello everyone, we are acquiring a new molecular biology laboratory with the fundamental objective of identifying species of microalgae and cyanobacteria. Perhaps you could help us decide if it is...

24 January 2021 8,320 4 View

How to improve the yield for the reaction below?

I am trying to increase the yield for the reaction below. I did the column and I saw that the major side-product is the symmetric dimer formed by 4-bromobenzyl bromide. I imagine that NaH is...

20 January 2021 7,874 4 View

Is it possible to calculate the energy stored (kWh) in a EV battery by knowing the cathode discharge potential and specific capacity properties?

For example, if I have the following data for a LiNi0,8Co0,15Al0,05O2 compound used in the cathode: - Specific capacity = 200 mAh/g - Average voltage = 3,7 V I have no information about the...

16 January 2021 3,038 2 View

PCR used to work, now it doesn't, why?

I recently did a PCR with certain primers, and the reaction went well for two gels, but when I repeated the exact same reaction a third time it suddenly didnt work, then I did it a 4th time and it...

12 December 2020 364 5 View

Can you suggest a sub-problem and possible objectives regarding to this thesis/research study?

03 November 2020 8,155 3 View

DNA disappears from gel, whats going on?

Recently I've been doing some PCRs and the primes used to work a month ago, but now that we want to repeat the experiment, they are not working anymore. I have noticed something in my gels, and it...

28 October 2020 4,427 4 View

Can you realize "top-down" and "bottom-up" ARE THE SAME THINGS at important junctures IN ONTOGENY (child development)?

Can you realize "top-down" and "bottom-up" ARE [ or certainly can, if not MUST, be ] THE SAME THINGS at important junctures IN ONTOGENY (child development)? This Question is NOT addressing YOU...

09 February 2021 5,289 1 View

Carbon takes interstitial position in ferrite or austenite phase. Does it goes on octahedral site or tetrahedral site?

There two types of voids i.e., tetrahedral and octahedral site. My question is at which site C atoms preferer to go in Fe for (ferrite phase) BCC structure and (austenite phase) FCC structure, and...

26 November 2020 8,263 4 View

Should agricultural research move towards bio-fortified products of various crops ?

To tackle the problem of various micronutrient deficiencies (Zn, Fe, Pro VitaminA, quality protein, etc.) when certain foods are consumed as a staple.

26 November 2020 9,725 13 View

Why the theoretical calculation of percentage atom varies from measured data from EDX study?

I am wondering why there is a variation in the theoretical atomic percentage in Ni-Cu ferrites and the percentage atom values found from EDX spectra. In the case of Fe and O, there exists this...

25 November 2020 2,470 3 View

Is it correct for me to use metals such as Pb, Cd, Fe, and Mn as parameters with TDS and pH included to calculate WQI?

Hi everyone, I have results for the water samples that I ran over the last few seasons. I want to evaluate the water quality using Weighted Arithmetic Index Method developed by Brown et al.,...

26 October 2020 8,634 3 View

It is said that Faith and Science are frontally confronted, a good Scientist cannot be a Believer or practice any Religion or Religious Belief?

The relationships between Science, Beliefs and Faith have always generated a heated debate (which has reached popular opinion) leading to think that they are irreconcilable concepts and that a...

26 October 2020 2,389 99 View

How to keep students engaged in online learning?

Dear RG members, In response to the ongoing outbreak of coronavirus, all face to face classes have been suspended. in this regard, how to keep students engaged in online learning? especially...

12 October 2020 2,795 48 View

What is the recommended maximum length of listening tasks for primary school children?

I would like to know if there are studies that investigated how long primary-school children are able to concentrate on a listening task. Are there official recommendations for a maximum task length?

20 September 2020 1,934 7 View

Is there a monotectic reaction in Fe-Cu system?

Hi all, In Munitz's paper attached, it is explained on Page 9 that there is a monotectic reaction in Fe-Cu alloys (Fe based alloys), but I cannot see where on the phase diagram the monotectic...

15 September 2020 5,358 4 View

How to estimate magnetic permeability of composite materials (Fe and paramagnetic materials)?

Do works exist about magnetic permeability calculation of ferromagnetic composite materials such as SMC or mixe of iron powder and epoxy at lower density of iron than SMC?

14 September 2020 5,591 1 View