Sl2-triple - Revision history

en>BG19bot: WP:CHECKWIKI error fix for #98. Broken sub tag. Do general fixes if a problem exists. -, replaced: _{0 → ₀ using AWB (9957)}

2014-03-01T09:17:00Z

WP:CHECKWIKI error fix for #98. Broken sub tag. Do general fixes if a problem exists. -, replaced: 0 → 0 using AWB (9957)

← Older revision		Revision as of 11:17, 1 March 2014
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	The '''Universal Soil Loss Equation''' (USLE) is a widely used [[mathematical model]] that describes [[soil]] [[erosion]] processes.<ref>{{cite book\|author=Hudson, Norman\|title=Field Measurement of Soil Erosion and Runoff, Issue 68\|publisher=Food and Agriculture Organization of the United Nations\|year=1993\|isbn=9789251034064\|pages=121-126\|url=http://books.google.com/books?id=rS1fiFU3rOwC&pg=PA121}}</ref>		Im Emely and was born on 6 May 1986. My hobbies are Canoeing and Seashell Collecting.<br><br>my page; [http://www.charlie911.com/uggboots.html discount ugg boots]

	~~Erosion models play critical roles in soil and [[water]] resource [[conservation ethic\|conservation]]~~ and [[nonpoint source pollution]] assessments, including: [[sediment]] load assessment and inventory, conservation planning and design for [[sediment control]], and for the advancement of scientific understanding. The USLE or one of its derivatives are main models used by [[United States]] government agencies to measure water erosion.<ref>National Resources Conservation Service, U.S. Department of Agriculture. Washington, DC. {{USFR\|61\|27998}} "Technical Assistance." 1996-06-04.</ref>

	~~The USLE~~ was ~~developed in the U.S. based~~ on ~~soil erosion data collected beginning in the 1930s by the [[USDA]] Soil Conservation Service (now the USDA [[Natural Resources Conservation Service]]).<ref>Wischmeier, W~~.H. and D.D. Smith. 1978. [http://www.ars.usda.gov/SP2UserFiles/ad_hoc/36021500USLEDatabase/AH_537.pdf "Predicting Rainfall Erosion Losses: A Guide to Conservation Planning."] Agriculture Handbook No. 537. USDA/Science and Education Administration, US. Govt. Printing Office, Washington, DC. 58pp.</ref> <ref>Wischmeier, W. H., and D. D. Smith, 1960. "A universal soil-loss equation to guide conservation farm planning." ''Trans. Int. Congr. Soil Sci.,'' 7th, p. 418-425.</ref> The model has been used for decades for purposes of conservation planning both in the United States where it originated and around the world, and has been used to help implement the United States' multi-billion dollar conservation program. The '''Revised Universal Soil Loss Equation''' (RUSLE) and the '''Modified Universal Soil Equation''' (MUSLE) continue to be used for similar purposes.

	~~==Overview of erosion models==~~
	~~The two primary types of erosion models~~ are process-based models and [[empirical model\|empirically]] based models. Process-based (physically based) models mathematically describe the erosion processes of detachment, transport, and [[Deposition (chemistry)\|deposition]] and through the solutions of the equations describing those processes provide estimates of [[soil loss]] and [[sediment yield]]s from specified land surface areas. Erosion science is not sufficiently advanced for there to exist completely process-based models which do not include empirical aspects. The primary indicator, perhaps, for differentiating process-based from other types of erosion models is the use of the sediment continuity equation discussed below. Empirical models relate management and environmental factors directly to soil loss and/or sedimentary yields through statistical relationships. Lane et al.<ref>Lane, L.J., E.D. Shirley, and ~~V.P. Singh. 1988. "Modeling erosion on hillslopes." p.287-308. In: M.G. Anderson (ed.) "Modeling Geomorphological Systems." John Wiley, Publ., NY~~.</ref> provided a detailed discussion regarding the nature of process-based and empirical erosion models, as well as a discussion of what they termed [[conceptual model]]s, which lie somewhere between the process-based and purely empirical models. Current research effort involving erosion modeling is weighted toward the development of process-based erosion models. On the other hand, the standard model for most erosion assessment and conservation planning is the empirically based USLE, and there continues to be active research and development of USLE-based [[erosion prediction]] technology.

	~~==Description of USLE==~~
	The USLE was developed from erosion plot and rainfall simulator experiments. The USLE is composed of six factors to predict the long-term average annual soil loss (A). The equation includes the [[rainfall]] erosivity factor (R), the soil erodibility factor (K), the [[topographic]] factors (L and S) and the cropping management factors (C and P). The equation takes the simple product form:<br />
	~~:<math>A = R K L S C P</math>~~
	The USLE has another concept of experimental importance, the unit plot concept. The unit plot is defined as the standard plot condition to determine the soil's [[erodibility]]. These conditions are when the LS factor = 1 (slope = 9% and length = 72.6 feet) where the plot is [[fallow]] and [[tillage]] is up and down slope and no conservation practices are applied (CP=1). In this state:<br />
	~~:<math>K = A/R</math~~>
	A simpler method to predict K was presented by Wischmeier et al.<ref>Wischmeier, W.H., C.B. Johnson, and B.V. Cross. 1971. "A soil erodibility nomograph for farmland and construction sites." ''[[Journal of Soil and Water Conservation]]'' 26:189-193. {{issn\|1941-3300}}</ref> which includes the particle size of the soil, organic matter content, soil structure and profile permeability. The soil erodibility factor K can be approximated from a [[nomograph]] if this information is known. The LS factors can easily be determined from a slope effect chart by knowing the length and gradient of the slope. The cropping management factor (C) and conservation practices factor (P) are more difficult to obtain and must be determined empirically from plot data. They are described in soil loss ratios (C or P with / C or P without).

	~~==See also==~~
	* Modified Universal Soil Loss Equation (MUSLE)
	* Certified Professional in Erosion and Sediment Control ([[CPESC]])
	*[[Erosion control]]

	~~==References==~~
	~~{{reflist}}~~

	~~==External links==~~
	*[http://www.~~ars~~.~~usda.gov~~/~~Research//docs~~.~~htm?docid=10626 "About the Universal Soil Loss Equation"] - USDA~~
	*[http://fargo.nserl.purdue.edu/rusle2_dataweb RUSLE2 - Official site] - USDA

	~~[[Category:Environmental soil science]]~~
	~~[[Category:Water pollution]~~]

en>David Eppstein: /* References */ Vladimir L. Popov

2013-11-17T20:10:09Z

References: Vladimir L. Popov

← Older revision		Revision as of 22:10, 17 November 2013
Line 1:		Line 1:
	~~If you have discovered on your own dealing with a legitimate subject you certainly need to look into obtaining a attorney.~~ The ~~ideal legal representative isn~~'~~t constantly very easy to locate, but you~~'~~ve got to get it done~~. ~~Take advantage~~ of the ~~tips on this page to help you out in [~~http://~~photo~~.~~net~~/~~gallery/tag-search/search~~?~~query_string~~=~~acquiring acquiring~~] the ~~very best rep for those who have a legitimate issue~~ to ~~cope with~~.<br><br>~~Ensure that your attorney places every little thing on~~ the ~~dinner table with regards to your options available~~. ~~When going into a suit, it is advisable to know all the choices that you may have and if there is a plea bargain offered~~. ~~This will not just assist you~~ in ~~getting finest outcome, and definitely will simplicity your assurance~~.<~~br><br~~>~~When you are getting a legal professional~~, ~~be sure that you will find a talk in regards to the payment plan that you might want to instill~~. ~~Occasionally, you might not have each of the funds beforehand, so you should workout a regular monthly strategy that best suits you comfortably~~. ~~Get this accomplished beforehand which means you don't need to worry about it later~~.~~<br><br>In case your courtroom scenario concerns real estate property like selling or~~ [http://www.~~youtube~~.~~com~~/~~watch?v=EFq8Vu4YIj0 car accident attorney indianapolis~~] ~~buying a house or being prosecuted by way of a former landlord~~, ~~you will need a real-estate lawyer~~. ~~You will definately get far better final results should you employ a lawyer that has substantial experience with relevant situations~~.<br><br>~~It is important~~ to ~~look at~~ the ~~area~~ of ~~expertise~~ of ~~a legal representative your~~ are ~~selecting~~. ~~You need to make sure you work with~~ the ~~legal professional you need~~. ~~You~~ do not ~~desire to engage a legal representative that are experts in legal law to complete your real estate preparing~~. ~~Choosing a legal representative that focuses on no matter what section~~ of ~~law you require, will guarantee you receive someone that provides extensive experience~~ of ~~that place~~ and ~~may conduct a excellent job~~.<br><br>~~An excellent hint to remember when employing~~ a ~~legal professional is usually to be extremely cautious about any attorney who appears more interested in obtaining paid than successful your case. There are lots~~ of ~~unethical lawyers around that will consider to get you to cover~~ a ~~contingency charge~~, ~~or perhaps enable you to get to mortgage your house~~.~~<br><br>Shop around prior to using~~ the ~~services~~ of ~~any legal representative~~. ~~You may get~~ the ~~itching~~ to ~~get it more than with~~ and ~~just pick someone through~~ the ~~Classifieds~~. ~~Don't get it done! You won't be happy with~~ the ~~result. Instead~~, ~~research legal professionals who could execute most effective for you. Locate some testimonials~~ (~~they could be on~~ the ~~internet~~) and ~~obtain a perception about her or his individuality~~ and ~~history. It'll make your situation far better~~.<br><br>~~If you require a attorney~~, ~~you need to make sure you locate one that is incorporated in~~ the ~~suitable jurisdiction~~. ~~Usually it will be possible to discover a lawyer that~~ is ~~licensed~~ to ~~rehearse in~~ the ~~status you live in~~. ~~Make sure they~~ are ~~capable to process law inside your~~ state.<br><br>~~Acquire created notices whenever you are getting together with with your legal representative~~. ~~Yes~~, ~~your attorney is in your favor~~, ~~however you are nonetheless responsible for any things that are promised~~, ~~predicted, or neglected~~. ~~This is especially true in economic interactions~~. ~~You~~'~~ll need to have as much paperwork as possible in the event that you will find any problems~~.<br>~~<br>Prior to deciding to work with~~ a ~~attorney to adopt your situation, make sure that you consider their accreditations~~. ~~Inquire what rules college they finished~~ from and ~~also the claims they had taken~~ the ~~pub in~~. ~~This will likely establish where by they can practice rules~~. ~~You may also consider previous cases they may have won~~ or ~~shed~~.~~<br><br>There exists not many delight found~~ in ~~legal process~~. ~~They are able to rapidly move from awful to more serious when you don't have adequate representation~~. ~~We hope that this article has been useful in expressing information that will enable you to find~~ the ~~greatest legal professional to handle your case in the courtroom~~.		The '''Universal Soil Loss Equation''' (USLE) is a widely used [[mathematical model]] that describes [[soil]] [[erosion]] processes.<ref>{{cite book\|author=Hudson, Norman\|title=Field Measurement of Soil Erosion and Runoff, Issue 68\|publisher=Food and Agriculture Organization of the United Nations\|year=1993\|isbn=9789251034064\|pages=121-126\|url=http://books.google.com/books?id=rS1fiFU3rOwC&pg=PA121}}</ref>

			Erosion models play critical roles in soil and [[water]] resource [[conservation ethic\|conservation]] and [[nonpoint source pollution]] assessments, including: [[sediment]] load assessment and inventory, conservation planning and design for [[sediment control]], and for the advancement of scientific understanding. The USLE or one of its derivatives are main models used by [[United States]] government agencies to measure water erosion.<ref>National Resources Conservation Service, U.S. Department of Agriculture. Washington, DC. {{USFR\|61\|27998}} "Technical Assistance." 1996-06-04.</ref>

			The USLE was developed in the U.S. based on soil erosion data collected beginning in the 1930s by the [[USDA]] Soil Conservation Service (now the USDA [[Natural Resources Conservation Service]]).<ref>Wischmeier, W.H. and D.D. Smith. 1978. [http://www.ars.usda.gov/SP2UserFiles/ad_hoc/36021500USLEDatabase/AH_537.pdf "Predicting Rainfall Erosion Losses: A Guide to Conservation Planning."] Agriculture Handbook No. 537. USDA/Science and Education Administration, US. Govt. Printing Office, Washington, DC. 58pp.</ref> <ref>Wischmeier, W. H., and D. D. Smith, 1960. "A universal soil-loss equation to guide conservation farm planning." ''Trans. Int. Congr. Soil Sci.,'' 7th, p. 418-425.</ref> The model has been used for decades for purposes of conservation planning both in the United States where it originated and around the world, and has been used to help implement the United States' multi-billion dollar conservation program. The '''Revised Universal Soil Loss Equation''' (RUSLE) and the '''Modified Universal Soil Equation''' (MUSLE) continue to be used for similar purposes.

			==Overview of erosion models==
			The two primary types of erosion models are process-based models and [[empirical model\|empirically]] based models. Process-based (physically based) models mathematically describe the erosion processes of detachment, transport, and [[Deposition (chemistry)\|deposition]] and through the solutions of the equations describing those processes provide estimates of [[soil loss]] and [[sediment yield]]s from specified land surface areas. Erosion science is not sufficiently advanced for there to exist completely process-based models which do not include empirical aspects. The primary indicator, perhaps, for differentiating process-based from other types of erosion models is the use of the sediment continuity equation discussed below. Empirical models relate management and environmental factors directly to soil loss and/or sedimentary yields through statistical relationships. Lane et al.<ref>Lane, L.J., E.D. Shirley, and V.P. Singh. 1988. "Modeling erosion on hillslopes." p.287-308. In: M.G. Anderson (ed.) "Modeling Geomorphological Systems." John Wiley, Publ., NY.</ref> provided a detailed discussion regarding the nature of process-based and empirical erosion models, as well as a discussion of what they termed [[conceptual model]]s, which lie somewhere between the process-based and purely empirical models. Current research effort involving erosion modeling is weighted toward the development of process-based erosion models. On the other hand, the standard model for most erosion assessment and conservation planning is the empirically based USLE, and there continues to be active research and development of USLE-based [[erosion prediction]] technology.

			==Description of USLE==
			The USLE was developed from erosion plot and rainfall simulator experiments. The USLE is composed of six factors to predict the long-term average annual soil loss (A). The equation includes the [[rainfall]] erosivity factor (R), the soil erodibility factor (K), the [[topographic]] factors (L and S) and the cropping management factors (C and P). The equation takes the simple product form:<br />
			:<math>A = R K L S C P</math>
			The USLE has another concept of experimental importance, the unit plot concept. The unit plot is defined as the standard plot condition to determine the soil's [[erodibility]]. These conditions are when the LS factor = 1 (slope = 9% and length = 72.6 feet) where the plot is [[fallow]] and [[tillage]] is up and down slope and no conservation practices are applied (CP=1). In this state:<br />
			:<math>K = A/R</math>
			A simpler method to predict K was presented by Wischmeier et al.<ref>Wischmeier, W.H., C.B. Johnson, and B.V. Cross. 1971. "A soil erodibility nomograph for farmland and construction sites." ''[[Journal of Soil and Water Conservation]]'' 26:189-193. {{issn\|1941-3300}}</ref> which includes the particle size of the soil, organic matter content, soil structure and profile permeability. The soil erodibility factor K can be approximated from a [[nomograph]] if this information is known. The LS factors can easily be determined from a slope effect chart by knowing the length and gradient of the slope. The cropping management factor (C) and conservation practices factor (P) are more difficult to obtain and must be determined empirically from plot data. They are described in soil loss ratios (C or P with / C or P without).

			==See also==
			* Modified Universal Soil Loss Equation (MUSLE)
			* Certified Professional in Erosion and Sediment Control ([[CPESC]])
			*[[Erosion control]]

			==References==
			{{reflist}}

			==External links==
			*[http://www.ars.usda.gov/Research//docs.htm?docid=10626 "About the Universal Soil Loss Equation"] - USDA
			*[http://fargo.nserl.purdue.edu/rusle2_dataweb RUSLE2 - Official site] - USDA

			[[Category:Environmental soil science]]
			[[Category:Water pollution]]

46.73.188.163 at 11:56, 26 May 2012

2012-05-26T11:56:07Z

New page

If you have discovered on your own dealing with a legitimate subject you certainly need to look into obtaining a attorney. The ideal legal representative isn't constantly very easy to locate, but you've got to get it done. Take advantage of the tips on this page to help you out in [http://photo.net/gallery/tag-search/search?query_string=acquiring acquiring] the very best rep for those who have a legitimate issue to cope with. Ensure that your attorney places every little thing on the dinner table with regards to your options available. When going into a suit, it is advisable to know all the choices that you may have and if there is a plea bargain offered. This will not just assist you in getting finest outcome, and definitely will simplicity your assurance. When you are getting a legal professional, be sure that you will find a talk in regards to the payment plan that you might want to instill. Occasionally, you might not have each of the funds beforehand, so you should workout a regular monthly strategy that best suits you comfortably. Get this accomplished beforehand which means you don't need to worry about it later. In case your courtroom scenario concerns real estate property like selling or [http://www.youtube.com/watch?v=EFq8Vu4YIj0 car accident attorney indianapolis] buying a house or being prosecuted by way of a former landlord, you will need a real-estate lawyer. You will definately get far better final results should you employ a lawyer that has substantial experience with relevant situations. It is important to look at the area of expertise of a legal representative your are selecting. You need to make sure you work with the legal professional you need. You do not desire to engage a legal representative that are experts in legal law to complete your real estate preparing. Choosing a legal representative that focuses on no matter what section of law you require, will guarantee you receive someone that provides extensive experience of that place and may conduct a excellent job. An excellent hint to remember when employing a legal professional is usually to be extremely cautious about any attorney who appears more interested in obtaining paid than successful your case. There are lots of unethical lawyers around that will consider to get you to cover a contingency charge, or perhaps enable you to get to mortgage your house. Shop around prior to using the services of any legal representative. You may get the itching to get it more than with and just pick someone through the Classifieds. Don't get it done! You won't be happy with the result. Instead, research legal professionals who could execute most effective for you. Locate some testimonials (they could be on the internet) and obtain a perception about her or his individuality and history. It'll make your situation far better. If you require a attorney, you need to make sure you locate one that is incorporated in the suitable jurisdiction. Usually it will be possible to discover a lawyer that is licensed to rehearse in the status you live in. Make sure they are capable to process law inside your state. Acquire created notices whenever you are getting together with with your legal representative. Yes, your attorney is in your favor, however you are nonetheless responsible for any things that are promised, predicted, or neglected. This is especially true in economic interactions. You'll need to have as much paperwork as possible in the event that you will find any problems. Prior to deciding to work with a attorney to adopt your situation, make sure that you consider their accreditations. Inquire what rules college they finished from and also the claims they had taken the pub in. This will likely establish where by they can practice rules. You may also consider previous cases they may have won or shed. There exists not many delight found in legal process. They are able to rapidly move from awful to more serious when you don't have adequate representation. We hope that this article has been useful in expressing information that will enable you to find the greatest legal professional to handle your case in the courtroom.

Sl2-triple - Revision history

en>BG19bot: WP:CHECKWIKI error fix for #98. Broken sub tag. Do general fixes if a problem exists. -, replaced: 0 → 0 using AWB (9957)

en>David Eppstein: /* References */ Vladimir L. Popov

46.73.188.163 at 11:56, 26 May 2012

en>BG19bot: WP:CHECKWIKI error fix for #98. Broken sub tag. Do general fixes if a problem exists. -, replaced: _{0 → ₀ using AWB (9957)}