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.

View More On Wikipedia.org
Recent contents Top users
  1. silvermane

    Finding a Transformation Matrix to yield the basis

    Homework Statement The solutions to the linear differential equation d^2u/dt^2 = u for a vector space. Find two independent solutions, to give a basis for that solution space. The Attempt at a Solution I want to understand this question. I feel that there's something I'm missing. I...
  2. S

    Fitting the Potato Yield Model with Superphosphate Fertiliser

    Homework Statement Suppose (Y1, Y2, Y3, Y4) = (5.2, 6.8, 11.9, 17.0) are the average yields (in tonne/ha) of potato grown in soil with 4 different levels of superphosphate fertiliser, x1 = 1.20, x2 = 1.75, x3 = 2.30, x4 = 2.85. We want to fit the model E[Yi] = \beta1 + \beta2xi + \beta3zi...
  3. R

    Calculating percentage yield labi really ?

    In this lab we saw the reaction of lead (II) nitrate with potassium iodide to form a lead (II) iodide precipitate and aqueous potassium nitrate. Pb(NO3)2 + 2KI ----> PbI2 + 2KNO3(aq) There was 3.31 grams Lead Nitrate, 1.66 grams Potassium Iodide, and 0.48 grams lead (II) iodide...
  4. S

    What causes some materials to have upper and lower yield points?

    Hey, Just wondering how to explain the yield point run-off for low carbon steel. Why does LCS have an upper yield point, followed directly by a lower yield point? Thanks, -Spoon
  5. G

    Calculating Yield Strength using a Load vs. Displacement Curve

    Hi, This question came up on my midterm and I had no idea how to answer it without redrawing the entire curve as a stress vs. strain curve (which obviously took too long to do). Anyway, I'm just requesting a general procedure, not a numerical answer. If you had a Load (y-axis) vs...
  6. T

    Reasons why % yield would be so low, synthesis of zinc iodide

    Homework Statement In my Chem lab we synthesized zinc iodide. To 1g granulated zinc, 2ml distilled water and 4 drops of 2 M acetic acid was added. Then 1g of iodide. The mixture was agitated and several minutes later the reaction completed. There was some excess zinc, so we set up a...
  7. S

    :Sources of Error that Impact the Percentage Yield

    URGENT:Sources of Error that Impact the Percentage Yield So my question is: 1. What sources of error in the experiment would affect the percentage yield of reaction? 2. In what ways this experiment could be improved...
  8. P

    CHEM: Calculate the volume of water expected if the yield of ester were 100%.

    Homework Statement Calculate the volume of water expected if the yield of ester were 100%. 19.0mL of n-propanol (0.25 Mol) 18.5mL(0.25 Mol) propanoic acid. 5 drops concentrated sulfuric acid Homework Equations The Attempt at a Solution C3H7OH + C3H5COOH ---> C6H12O2 + H2O (...
  9. 5

    Effect of Temp on yield stress and fracture toughness

    Homework Statement I am given the trends for yield stress and fracture toughness as functions of temperature for steel. I need to explain the trends Homework Equations none The Attempt at a Solution I am guessing the yield stress is the stress that the material can withstand...
  10. F

    Fission yield of fission products

    Does anyone know where to find fission products' fission yield data of APWR and PBMR?
  11. C

    What is the Correct Calculation for Percentage Yield of Alkene from Alcohol?

    We were preparing Alkene from Alcohol & were asked to calculate percentage yield. We used 13.5 ml Cyclohexanol with 13.5 ml water & 7ml Sulfuric acid. To calculate % yield,i need theoretical mass.. So i was calculating no.of moles of cyclohexanol & cyclohexene (the product) to get the...
  12. I

    When does a SN1 reaction only yield one enantiomer, and not a racemic mixture?

    I'm curious about how a SN1 reaction can yield only one product (if it can, at all), rather than two (ultimately leading to a retention of stereochemistry). Would sterical reasons and/or its orbitals also have any play into this? Thanks!
  13. J

    Yield Stress/Endurance Limit

    Does anyone know or know of a good resource where I can find the yield stress and endurance limit of ASTM A513 steel?
  14. C

    Three vectors A, B, and C add together to yield zero

    Homework Statement Three vectors A, B, and C add together to yield zero: A + B + C = 0. The vectors A and C point in opposite directions and their magnitudes are related by the expression: A = 2C. Which one of the following conclusions is correct. A. B and C have equal magnitudes and...
  15. L

    Shockwaves: Exploring Explosive Yield and Blast Radius

    Hi could someone tell me a little more about shockwaves? I have looked everywhere but cannot find anywhere that shows explosive yield to blast radius and the dangers to human of being at different proximities to a blast. I know the closer you are to one the more likely you are to suffer internal...
  16. R

    Temperature related to yield or type of explosion? Nuclear vs conventional.

    Are the temperatures produced from a nuclear reaction special in anyway? If a 20 kiloton nuke is producing hundreds of thousands of degrees at it's center, would the same ballpark be true of 20,000 tons of TNT, which is roughly equal in yield?
  17. K

    Theoretical Yield Calc: Asprin (C9H8O4)

    Homework Statement Calculate the theoretical yield of aspirin (C9H8O4). C7H6O3 + C4H6O3 --> C9H8O4 +C2H4O2 Mass C7H6O3 = 2g Volume C4H6O3 = 4mL Homework Equations The Attempt at a Solution I am not sure where to go with this prolem at all. I can't just assume that the density...
  18. D

    What whould intigration of this result yield?

    I got a function - \frac {v - v_c}{cr} = \frac {dv_c}{dt} Suppose I integrate this so as to get the original function...apparently the original function seems vc...so I should get this function after integrating; since we have dt in the denominator, it means the original function vc was...
  19. S

    Calculating Effective Yield on Discount Loan

    Find the effective yield on a discount loan with the given discount rate r and the time. (Round your answer to two decimal places.) r = 2.7%, 11 months I tried using the equation r=(1+i/t)^t, but could not come up with the exact correct answer. I know the answer should be about 2.8 or...
  20. C

    Theoretical Yield, Molar Mass, and Percent Yield

    Hi, I have a few questions that I am struggling with. Any help would be greatly appreciated. Question 1 Calculate the molar mass of calcium chloride dihydrate, CaCl2 • 2H2O. Please use the Periodic Table values rounded to the hundredths place for your calculation and round your answer to...
  21. P

    Ski pole three point bending-calculation of load at yield

    Homework Statement A ski pole is bent(plastic deformation) in three point bending by applying a load 2F perpendicularly to the ski pole. The forces at the end points are of magnitude F. If the pole yields due to plastic deformation at the mid point longitudinal span of the ski pole which is...
  22. T

    Crystallization Report - What is a Good Yield?

    Homework Statement I did my lab work a week ago and in the lab report I am to discuss my results, and how successful. If not successful, then why not. Our Organic Chem. lab was on crystallization and we had to obtain pure Benzoic Acid crystals from 2 grams of a crude material. My question...
  23. P

    Weight percent of Ge needed to yield alloy with x atoms/cm3

    Homework Statement Germanium forms a substitutional solid solution with silicon. Compute the weight percent of germanium that must be added to silicon to yield an alloy that contains 2.43e21 Ge atoms per cubic centimeter. The densities of pure Ge and Si are 5.32 and 2.33 g/cm3 respectively...
  24. P

    Stoichiometry: yield of reaction between hydrochloric acid and calcium carbonate

    Thank you in advance for the correction of the resolution. Homework Statement By reacting 225 g of hydrochloric acid with 300 g of calcium carbonate with 80% of purity, 34 L (litres) of gas were obtained, measured at 37oC and a pression of 0.82 atm. What is the yield of this reaction and what...
  25. P

    Stoichiometry: finding the yield in reaction of sodium azide with iron oxide

    Thank you in advance. Homework Statement Nitrogen gas can be obtained from the reaction between sodium azide and iron oxide. 6NaN_3_{(s)}+Fe_2O_3_{(s)} \rightarrow 3Na_2O_{(s)}+2Fe_{(s)}+9N_2_{(g)} a) What is the yield of this reaction, knowing that, from 390 g of azide and 400 g of...
  26. C

    Calculating theoretical yield of resulting alum from water dissolving help asap

    calculating theoretical yield of resulting alum from water dissolving...help asap! a mass of 13.02g (NH4)2SO4 is dissolved in water. After the solution is heated, 27.22g of Al2(SO4)3*18H2O is added. calculate the theoretical yield of the resulting alum (formula is...
  27. Saladsamurai

    Difference between Yield stress and Proportional Limit

    Is there a difference, when looking at the stress-strain diagram, between the "Proportional Limit stress" and the "Yield Stress" ? Thanks!
  28. L

    Is ductility associated with the manifestation of yield phenomenon?

    Hi everybody, I have a doubt about a question on my future exam of Materials Science. Is ductility associated with the manifestation of yield phenomenon? * TRUE *FALSE I have doubts because I think I could answer this question in both ways... Any help will be more than welcome!
  29. M

    Callable bonds & Yield to call date word problem

    Homework Statement A corporation sold a 20-year, 10% semi-annual coupon bond issue 2 years ago. The bonds are callable at 108 ( percent of face value) 5 years after issue and at 104 (percent of face value) 10 years after issue. If the bonds are currently priced at 102.5 (percent of face...
  30. T

    [Something descriptive here will yield more responses]

    Homework Statement In the flgure below, the incline has mass M and is fastened to the stationary horizontal tabletop. The block of mass m is placed near the bottom of the incline and is released with a quick push that sets it sliding upward. It stops near the top of the incline, as shown in the...
  31. Y

    [Something descriptive here will yield more responses]

    I try to find the solution of the integrals below for more than a week. \int_{p>0}^{\infty}\frac{\exp[-ap]}{p}dp can anyone give me a hint about how to solve it?
  32. V

    Yield Point and Temparature relationship of High Tensile Steel

    I have a steel material that has a yield strength of 515 mpa and a tensile strength of 615 mpa at zero degrees. What i need to know is will the tensile strength and yield strength be higher than 293 mpa at 80 degrees. The steel is ahigh tensile grade steel from china (Q390C).
  33. B

    Estimating the expected yield of a chemical reaction

    Scenario: Suppose that a pump creates a partial vacuum, which is used to input air (gas) from the environment into a long tube. At a certain point within this tube, diatomic hydrogen and oxygen (gases) are also inputted into the tube. The tube outputs back into the environment. I have...
  34. S

    Financial mathematics - estimating a yield curve

    The problem is to estimate a zero-coupon yield curve for up to 5 years ahead, knowing (for time t=0) the following: bond 1: coupon 6.5, maturity - 1 year, price = 103 bond 2: coupon 5, maturity - 2 years, price = 102 bond 3: coupon 4.2, maturity - 3 years, price = 100 bond 4: coupon 6.5...
  35. L

    Decay Energy & Thermal Yield of Light Water Reactor Waste

    Assuming a Light Water Reactor, what would be the decay energy of the fission products of the reactor's nuclear waste and it's thermal yield? What I am getting at is that instead of just storing the waste, i want to know how much electricity the waste emits. I have very little information...
  36. F

    Debunking Yield Stress Myths: The Truth About Fluid Properties

    Is Yield Stress for a fluid a real property? Or is it a time dependent illusion we are measuring? For example - some glass materials are referred to as super-cooled fluids and yet behave and appear like solids. In reality though these super cooled fluids flow - very slowly. Some old...
  37. N

    FInd a simple expression for the vector potential which will yield this field

    em Homework Statement In a certain region, the magnetic field as a linear function of time is given by B = Bo \frac{t}{/tau} z hat Bo and tau constants. A)FInd a simple expression for the vector potential which will yield this field. B)Assuming the scalar potential is a constant, find E...
  38. I

    Chemistry Calculating Percent Yield in Moles: Is It Different?

    Is calculating the percent yield in moles different than calculating the percent yield in mass? I know that to calculate the percent yield in mass, you divide the actual over the theoretical and multiply by 100. There happens to be a side note in my homework saying that percent yiled can...
  39. T

    Finding Yield Strength, E, and TS

    Heres my given problem: Gauge Length = 2 in. Area = 0.5 in^2 The specimen yields under a load of 32,000 lb The corresponding gauge length is 2.0083 (the 0.2 yield point) Max load = 60,000 lb @ gage length = 2.60 in I need to determine the yield strength, modulus of elasticity, and...
  40. B

    Need Help with Yield Strength for FEA

    Hi, folks, I'm an aspiring Mechanical Engineer, & as such am very new to the subject of stress, strain, etc. I'm designing an assembly using a hi-performance polymer that has the following characteristics: Tensile Strength, 73°F 10.1 kpsi (10,100 psi) Tensile Modulus (E) 340 kpsi...
  41. R

    Difference between tensile and yield strength of a metal

    Homework Statement differance between tensile and yield strength. please help. Homework Equations The Attempt at a Solution
  42. A

    Solve 6-Month CD Yield Problem for Bank: USD 3M at 3.50% p.a.

    Homework Statement Assume that a bank wanted to issue a CD with a total face amount of USD 3,000,000 for 6 months (181 days). The coupon rate that the bank wanted to pay was 3.50% p.a. Currently the market is only demanding a 3.25% p.a. yield on a money market basis for 6-month CDs issued...
  43. A

    What would the explosive yield be?

    What would the explosive yield of a 100kg, 1 meter long, solid core titanium rod falling to the Earth from high-orbit be?
  44. P

    Understanding Yield: Does the Equation Need Breaking Down?

    Is this how it works? : BE(product) - BE(reactant#1) - BE(reactant#2) => Yield from fusion of product Easy enough, but what if reactant#1 and/or reactant#2 are also products of fusion?? Does the equation need to be broken down even further, or is the final BE for the final reactants...
  45. P

    Nuclear Yield Math: Find Fusion/Fission Yields for Elements

    Greetings---I would like to fool around with numbers, finding the fusion and/or fission yield (in MeV) for various combinations of elements. I can do the simple ones involving Hydrogen and it's isotopes, but figure I'll run into trouble with more complex nucleuses. Can anyone point me in right...
  46. R

    Yield (ROI = Return Of Investment) formula question

    [SOLVED] Yield (ROI = Return Of Investment) formula question The Calculation of simple yield: The Return* (Winnings) __________ X 100= ROI (%) Investment* (Stakes) so for example: I have 1000 bets with odds 2,00 500 of them are winning and 500 losing. So i am on 0 and my ROI is...
  47. S

    Theoretical Yield in Multi-Step Synthesis

    Homework Statement Exactly how do you find the theoretical yield of methyl m-nitrobenzoate from 10.0 g of benzoic acid? Homework Equations 1) Ph-COOH + CH3OH + H2SO4 --> Ph-COOCH3 2) Ph-COOCH3 + HNO3 + H2SO4 --> methyl m-nitrobenzoate The Attempt at a Solution 10.0 g...
  48. E

    How accurate is the offset yield point theory?

    How accurate is the offset yield point theory? http://www.princeton.edu/~humcomp/sophlab/m&mgl_7.htm
  49. F

    Solving Yield Gone Wrong in Chemistry Lab

    Yield gone wrong! Hi, I just have a question about some practical things in a chemistry lab and errors. :uhh: We carried out a recrystallization experiment of benzoic acid and napthalene :zzz: last week and during one of the steps where i was supposed to transfer my pure sample of benzoic...
  50. G

    Max Yield Phenolate Formation with Phenol

    under what circumstances phenol forms phenolate with max yield
Back
Top