# What is Yield: Definition and 222 Discussions

In viticulture, the yield is a measure of the amount of grapes or wine that is produced per unit surface of vineyard, and is therefore a type of crop yield. Two different types of yield measures are commonly used, mass of grapes per vineyard surface, or volume of wine per vineyard surface.The yield is often seen as a quality factor, with lower yields associated with wines with more concentrated flavours, and the maximum allowed yield is therefore regulated for many wine appellations.

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1. ### I Finding yield strength with a load/displacement curve

Hi! I have done a simulation where I got out the load/displacement curve of a steel beam that is simply supported with an equally distributed load across the whole length (10 m). I want to field the point at which the steel yields. I am used to use the 0,2% value on a stress/strain curve, but...
2. ### I Having problems finding an equation for radioisotope production yield

I am trying to get a plot, or a result for target like this: I've found some equations for my requested results, but they are from the same person's articles and I couldn't find another source. I've searched for EOB and TTY calculations but couldn't really do something. Could you give me an...
3. ### Small yield of tactical nuclear weapons

Uranium fission bombs have explosive power ofabout 10 000 tons of TNT. I understand that you can't make a uranium bomb with explosive power of 5 megatons of TNT brcause of the critical mass of U-235. Similarly you can't make an atomic fission weapon with explosive power of 10 tons of TNT...
4. ### Determining the Yield strength and Ultimate tensile strength of HDPE

Help would very appreciated. Also I am new to this website so if something seems wrong please tell me :)
5. ### Question about elastic limit and yield point

Point B is elastic limit and point C is yield point. From this link: https://en.m.wikipedia.org/wiki/Yield_(engineering)#Definition The definition given is: Both seems to refer to same definition, it is the point where the elastic deformation ends and plastic deformation begins. But from...
6. ### I What would a hypothetical quark-quark collision yield?

As seen in the summary, my question is purely hypothetical and I understand that it would most likely be impossible to happen (or I just haven't read enough). The concept that quarks and leptons are the fundamental particles of the universe has existed for a while now - therefore we know that...
7. ### Invariants of the stress tensor (von Mises yield criterion)

Hello all, I am trying to understand the von Mises yield criterion and stumbled across two equations for the second stress invariant. Although the only difference is a difference in signs (negative and positive), it has been bothering me. Attached are the two versions. Which one is correct and...
8. ### Is percent yield based on grams or moles?

Is percent yield based on grams or moles? Thanks.
9. ### What is the minimum gyroscope speed to yield force precession?

Does anyone know what the minimum speed of a gyro to make it so a force at 0deg will yield a movement at 90deg... or even better, what the angle is wrt speed... see http://www.copters.com/aero/gyro.html for pictures. -thx, rich
10. ### Chemistry Calculate the theoretical yield percentage for this reaction

Conversion: 1.0 t = 1.0x10^6 g impure Si Conversion: 2.33 t = 2.33x10^6 g SiCl4 Atomic Mass Si = 28.085 g/mol Atomic Mass Cl2 = (2 x 35.453) = 70.906 g/mol Mass SiCl4 = 28.085 + (4x35.453) = 169.897 g/molI got all this part down, however, I'm not quite sure where I am supposed to go from there...
11. ### Percentage yield in a reaction problem

Summary:: We are given a description of a reaction and the masses of two reactants and are initially asked to calculate which of two is the excess reagent and how much of the excess reagent would be left over if we have 100% completion. Then we are given a final mass (after purification) of the...
12. ### Software for nuclear cross-section measurement and Irradiation yield

I work in research paper on medical isotope production. I need a software where i can measure the cross section and Irradiation Yield like TALYS and EMPIRE. If you ask me why i don't use TALYS then the reply is I can't install it on my PC. so i am looking for alternate software where i can do...
13. ### B Why does a U-238 tamper increase nuclear yield of nuclear bomb?

Why does U-238 tamper increase nuclear yield of nuclear bomb? I mean it is not fissile.
14. ### Calculating Capacity of Steel Rack: Yield Stress Issues

Hi guys. Recently I've been assigned to know / calculate the capacity of the racks in our section. Our racks has layered steel pipes that are carrying the loads. After actual testing it can carry a load around 25 tons after yielding or having a bend. So my next step was to calculate for its...
15. ### Chemistry Adjust the volume to maximize the product yield

The answer given for (2) is " lower pressure" , isn't increase pressure, the reaction will proceed towards fewer moles of gas, therefore increase the product yield for this question.
16. ### Actual yield determination by experiment

Hi just one question. Can someone point to me some resources on how to calculate the actual yield under experimental conditions? thanks.Adrian
17. ### Actual yield of a chemical reaction

As in the summary, my question is : has the actual yield of the above reaction being determined experimentally?Thanks.Adrian Tudini
18. ### A Does Bohmian Mechanics yield the existence of a multiverse?

David Deutsch, a theoretical physicist, talks about David Bohm in his book "the Fabric of Reality": "[w]orking out what Bohm’s invisible wave will do requires the same computations as working out what trillions of shadow photons will do. Some parts of the wave describe us, the observers...
19. ### Work related problem: Yield strength as well as max load

Summary: Yield Strength value as well as maximum load capacity. Need equations and possibly a break down on how to solve the issue. So let's say I have a Wooden Street pole and I want to mount a steel bracket using metal bands to the street pole. The bracket will be mounted to the beam using 4...
20. ### How to calculate flexural yield strength?

I'm trying to learn some new engineering, so if something I ask doesn't make sense -- remember I'm new to this. I need to calculate how much force a part can take before breaking. Material: resin (Flexural Yield Strength: 6752 psi) - (Tensile Strength: 3390 psi) - (Density [lbs/gal]: 9.64) -...

48. ### Engineering Stress increases after yield stress?

I need to know why the Engineering stress increases after reaching the yield stress point, and continues to increase until reaching the UTS. Am I correct when I remember that there is strain hardening that occurs along the region from Yield stress to the Ultimate tensile stress? Engineering...
49. ### Use Raman microscope to measure quantum yield

We have a Renishaw inVia confocal Raman microscope. Currently I am using it to study photoluminescence. I have a very thin film with certain thickness (e.g. 60nm and 120nm). It turns out that they (60nm and 120nm) have different emission spectra. Here comes the question: Can I divide the...
50. ### How can a volume integral yield a vector field?

I'm using the textbook Electricity and Magnetism by Purcell. In the section about continuous charge distributions I found the following formula \mathbf{E}(x,y,z)= \frac{1}{4\pi\epsilon_0 } \int \frac{\rho(x',y',z')\boldsymbol{\hat r} dx'dy'dz'}{r^{2}} . It's stated that (x,y,z) is fixed...