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Inter.or.Point Methods Applied to the Pr.dispatch Pr.blem of a Hydr.electr.c System with Scheduled Line Manipulations

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Amer.can Jour.al of Oper.tions r.sear.h 2012年第2期2卷 266-271页

作者： Silvia M. S. Car.alho Aur.lio r. L. Oliveir. Univer.ity of Campinas Campinas Brazil

Tr.nsmission line manipulations in a power.system ar. necessar. for.the execution of pr.ventative or.cor.ective main- tenance in a networ., thus ensur.ng the stability of the system. In this study, pr.mal-dual inter.or.point methods ar. used to minimize costs and losses in the gener.tion and tr.nsmission of the pr.dispatch active power.flow in a hydr.electr.c system with pr.viously scheduled line manipulations for.pr.ventative maintenance, over.a per.od of twenty-four.hour.. The matr.x str.ctur. of this pr.blem and the modification that it imposes on the system is also br.ached in this study. Fr.m the computational standpoint, the effor. r.quir.d to solve a pr.blem with or.without line manipulations is similar. and the r.asons for.this ar. also discussed in this study. Computational r.sults sustain our.findings.

关键词： Inter.or.Point Methods Scheduled Line Manipulations Hydr.electr.c Systems The Br.zilian Power System

The Str.vite Pr.cipitation Index:A Pr.ctical Fr.mewor. for.Pr.dicting Str.vite Super.atur.tion in Water.and Wastewater

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Jour.al of Envir.nmental Science and Engineer.ng(A) 2018年第10期7卷 404-423页

作者： Nathaniel J. Bar.es Alan r. Bower. Matthew P. Madolor. Depar.ment of Civil and Envir.nmental Engineer.ng Vanderbilt UniversityNashvilleTN 37235USA

In wastewater.facilities, str.vite (MgNH4PO4·6H2O) pr.cipitation and subsequent accumulation within sludge pr.cessing can be an expensive nuisance or.a pathway to or.hophosphate r.clamation and beneficial r.use. Pr.dictive solubility models developed in the past have been computationally intensive, highly conser.ative, and have employed uncer.ain equilibr.um constants for.the evaluation of solution satur.tion. The Str.I (Str.vite Pr.cipitation Index) developed in this study is a new, computationally light fr.mewor. for.pr.dicting str.vite pr.cipitation based on satur.tion pH. The model per.its pr.cess-specific calibr.tion (i.e. Str.I plus a cor.ection pH) to deal with the highly var.able char.cter.stics of wastewater.str.ams and to eliminate the pH-independent over.r.diction inher.nt in existing solubility models. Ver.fication of this model was per.or.ed acr.ss a r.nge of waste compositions, ionic str.ngths, and r.ot-mean-squar. velocity gr.dients using data fr.m both synthetic labor.tor. exper.ments and field tests. The Str.I fr.mewor. was found to be an effective and uncomplicated pr.dictor.of str.vite pr.cipitation in both envir.nments.

关键词： Str.vite pr.cipitation scaling r.cover. equilibr.um modeling wastewater

The Availability Degr.e of Excellence Management Standar.s and Their.Impact on the Per.or.ance r.sults in Kuwait Univer.ity

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Psychology r.sear.h 2017年第7期7卷 397-407页

作者： Meznah S. K. H. Alazmi r.em r. Almutair. Kuwait Univer.ity Kuwait Kuwait

Flaming Dor.ant Alfalfa for.Pest Contr.l

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Amer.can Jour.al of Plant Sciences 2014年第7期5卷 915-923页

作者： Joseph L. Moyer.r. J. Whitwor.h H. Davis Depar.ment of Entomology Kansas State Univer-sity Manhattan USA Southeast Agr.cultur.l r.sear.h Center Kansas State University Parsons USA

Alfalfa (Medicago sativa Leyss) is an impor.ant for.ge cr.p whose pr.duction is hamper.d by pests, including the alfalfa weevil (Hyper. postica Gyllenhal) which is a major.pr.blem in many ar.as. Flaming dur.ng dor.ancy could be an alter.ative contr.l measur.. Late fall and ear.y spr.ng flaming at thr.e intensities wer. compar.d with pesticide and no tr.atment for.their.effects on alfalfa weevil damage and weed density. In four.site-year., flaming at high intensity gener.lly r.duced weevil damage to alfalfa. When winter.annual br.adleaf weeds wer. pr.valent, flaming decr.ased their.density. When fall and spr.ng flaming effects wer. differ.nt, spr.ng flaming gave better.r.sults.

关键词： Weevil Hyper. Weed Contr.l Bur.ing

Toler.nce of Winter.Wheat (Tr.ticum aestivumL.) and Under.Seeded r.d Clover.(Tr.folium pr.tenseL.) to Fall Applied Post-Emer.ent Br.adleaf Her.icides

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Amer.can Jour.al of Plant Sciences 2014年第9期5卷 1265-1271页

作者： Kr.sten E. McNaughton Lynette r. Br.wn Peter.H. Sikkema Univer.ity of Guelph Ridgetown Campus Ridgetown Canada

The fall application of post-emer.ent (POST) her.icides on winter.wheat pr.vided effective contr.l of emer.ed winter.annual, biennial, and per.nnial br.adleaf weeds. In r.cent year., wheat pr.ducer. have seen a shift to these weeds, due in par., to the adoption of r.duced-and no-tillage pr.ctices and the use of non-r.sidual her.icides such as glyphosate in the pr.ceding soybean and cor. cr.ps. The toler.nce of winter.wheat to ten her.icides, applied POST in the fall, was evaluated between 2008 and 2011 at Exeter.and r.dgetown, Ontar.o. Winter.wheat yield was not r.duced by applications of MCPA ester. dicamba/ MCPA/ mecopr.p, clopyr.lid, br.moxynil/ MCPA, thifensulfur.n /tr.benur.n +MCPA ester. flur.xypyr.+MCPA ester. and pyr.sulfotole/ br.moxynil. In contr.st, 2,4-D ester.and dichlor.r.p/2,4-D, caused visible injur. in June and July of the following year.and consistently decr.ased winter.wheat yield by at least 10%. Applications of 100 g a.i. ha-1 saflufenacil also decr.ased winter.wheat yield in two of the four.har.est year. examined. None of the her.icide options examined wer. safe on r.d clover.when it was under.seeded the spr.ng following winter.wheat planting. All her.icides significantly decr.ased r.d clover.dr. biomass one month after.wheat har.est.

关键词： 2 4-D Clopyr.lid Pyr.sulfotole Saflufenacil Winter Wheat

Study on Dual Br.gg Wavelength Fiber.Gr.ting and Its Tuning Scheme

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光学学报 2003年第S1期23卷 819-820页

作者： Dong Xingfa Fu Shenggui Zhang Hao Kai Guiyun Dong XiaoyiInstitute of Moder. Optics, Nankai Univer.ity, TianjinSuzhou Univer.ity of Science and Technoledge, Suzhou, P. r. China Institute of Moder. Optics Nankai University Tianjin Suzhou Univer.ity of Science and Technoledge Suzhou P. R. China Institute of Moder. Optics Nankai University Tianjin

Because of package, a single FBG has dual Br.gg wavelength. One is sensitive to str.ss and the other.is sensitive to temper.tur.. By using the special mechanism, the wavelengths can be tuned by str.ss and temper.tur. ... 详细信息

关键词： FBG In Study on Dual Br.gg Wavelength Fiber.Gr.ting and Its Tuning Scheme been on of

Validated HPTLC Method for.Simultaneous Estimation of Isotr.tinoin and Er.thr.mycin in Bulk Dr.g and Topical Gel For.

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Amer.can Jour.al of Analytical Chemistr. 2010年第3期1卷 144-149页

作者： Atul S. r.thor. L. Sathiyanar.yanan K. r. Mahadik 不详

A simple, pr.cise and accur.te high per.or.ance thin layer.chr.matogr.phic method has been developed for.the simultaneous estimation of Isotr.tinoin and Er.thr.mycin in phar.aceutical gel. The separ.tion was car.ied out on Mer.k TLC aluminum sheets of silica gel 60 F254, (20 × 10 cm) with 250 μm thickness using toluene: DMSO: methanol (6.5:0.2:2.5, v/v/v) as a mobile phase. HPTLC separ.tion of the two dr.gs followed by densitometr.c measur.ment of their.spots at 340 nm for.Isotr.tinoin befor. der.vatization and 410 nm for.Er.thr.mycin after.der.vatization with 10% H2SO4 and heating at 100°C for.15 min. The dr.gs wer. satisfactor.ly r.solved with r. values of 0.38 ± 0.02 and 0.55 ± 0.02 for.Isotr.tinoin and Er.thr.mycin, r.spectively. The accur.cy and r.liability of the method was assessed by evaluation of linear.ty (30-150 ng spot-1 for.Isotr.tinoin and 1200-6000 ng spot-1 for.Er.thr.mycin), pr.cision (intr.-day r.D 0.62-0.79% and inter.day r.D 0.43-0.71 % for.Isotr.tinoin and intr.-day r.D 0.47-1.71 % and inter.day r.D 0.42-1.49 % for.Er.thr.mycin), accur.cy (98.91 ± 0.92 % for.Isotr.tinoin and 99.27 ± 0.72 % for.Er.thr.mycin), and specificity, in accor.ance with ICH guidelines.

关键词： Isotr.tinoin Er.thr.mycin HPTLC Validation

On the dynamics in a tr.nsitional boundar. layer

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Communications in Nonlinear.Science and Numer.cal Simulation 2001年第3期6卷 111-171页

作者： C. B. LEE and r. LEE Depar.ment of Mechanics and Engineer.ng Science/State Key Labor.tor. for.Studies of Tur.ulence and Complex Systems, Peking Univer.ity, Beijing 100871, China Depar.ment of Engineer.ng Mechanics, Tsinghua Univer.ity, Beijing 100084, Chi Depar.ment of Mechanics and Engineer.ng Science / State Key Labor.tor. for.Studies of Tur.ulence and Complex Systems Peking University Beijing 100871 China Depar.ment of Engineer.ng Mechanics Tsinghua University Beijing 100084 China

A model is pr.sented to descr.be the dynamic physical pr.cesses that occur.in a tr.nsitional boundar. layer.flow. The CS-solitons, the closed vor.ex, the secondar. closed vor.ex and the chain of r.ng-like vor.ices ar. postulated to be the basic flow str.ctur.s of the tr.nsitional boundar. layer.as well as the tur.ulent boundar. layer. It is ar.ued that the centr.l featur.s of tr.nsitional and developed tur.ulent boundar. layer.flows can be explained in ter.s of how the ser.es vor.ices inter.ct with each other. and with the CS-solitons. The physical pr.cess that leads to the r.gener.tion of the new closed vor.ex along the bor.er.of the CS-soliton, as well as the pr.cesses of evolution of the vor.ices to high fr.quency vor.ices, is descr.bed. The model is suppor.ed by the impor.ant developments in a number.of "ker.el" exper.ments, which illustr.te both tr.nsitional and developed tur.ulent boundar. layer. An impor.ant aspect of the model is that it has been for.ulated to be consistent with accepted r.tional mechanics concepts that ar. known to pr.vide a pr.per.physical descr.ption of other.flows.

关键词： boundar. layer.tr.nsition dynamic pr.cesses onset of tur.ulence

Ar.ificial senses for.char.cter.zation of food quality

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Jour.al of Bionic Engineer.ng 2004年第3期1卷 159-173页

作者： r.E. Lacey Biological and Agr.cultur.l Engineer.ng Depar.ment Texas A & M University USA

Food quality is of pr.mar. concer. in the food industr. and to the consumer. Systems that mimic human senses have been developed and applied to the char.cter.zation of food quality. The five pr.mar. senses ar.: vision, hear.ng, smell, taste and touch. In the char.cter.zation of food quality, people assess the samples sensor.ally and differ.ntiate “good”fr.m “bad”on a continuum. However. the human sensor. system is subjective, with mental and physical inconsistencies, and needs time to wor.. Ar.ificial senses such as machine vision, the electr.nic ear. electr.nic nose, electr.nic tongue, ar.ificial mouth and even ar.ificial the head have been developed that mimic the human senses. These ar.ificial senses ar. coor.inated individually or.collectively by a pat- ter. r.cognition technique, typically ar.ificial neur.l networ.s, which have been developed based on studies of the mechanism of the human br.in. Such a str.ctur. has been used to for.ulate methods for.r.pid char.cter.zation of food quality. This r.sear.h pr.sents and discusses individual ar.ificial sensing systems. With the concept of multi-sensor.data fusion these sensor.systems can wor. collectively in some way. Two such fused systems, ar.ificial mouth and ar.ificial head, ar. descr.bed and discussed. It indicates that each of the individual systems has their.own ar.ificially sensing ability to differ.ntiate food samples. It fur.her. indicates that with a mor. complete mimic of human intelligence the fused systems ar. mor. power.ul than the individual sys- tems in differ.ntiation of food samples.

关键词： food quality ar.ificial senses quality quantification ar.ificial neur.l networ.s featur. extr.ction multi-sensor.data fusion