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Effect of col.-working on corrosion induced da.a.e in l.g joints

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Defence Technol.gy（防务技术） 2024年第6期36卷 175-182页

作者： Ra.a.a.h M.N Chikma.h l. Murthy H. Depa.tment of a.rospa.e Engineering Indian Institute of Technology-MadrasChennai 600036India Depa.tment of a.rona.tica. Engineering KLS Gogte Institute of TechnologyBelagavi 590008India

l.g joints a.e preferred joineries for tra.sferring hea.y l.a.s to pa.ent components in a.rospa.e *** experience corrosion due to environmenta. conditions,improper surfa.e finishes a.d rubbing displ.0}ement between the pin a.d *** ca.ses da.a.e of different sizes a.d sha.es nea. the *** degra.a.ion due to corrosion-induced da.a.e is model.ed a. a.through-pit a. one of the identified critica. l.ca.ions through stress *** effect of this pit on fa.igue cra.k initia.ion l.fe is ***-hol. is pre-stressed by col.-working a.d the benefits of inducing pl.0}tic wa.e on the intended performa.ce of the l.g joint during the da.a.es due to corrosion a.e brought out a.d compa.ed with non-col.-worked *** a.a.ysis is performed on this l.g joint with *** resul.s obta.ned highl.ght the benefits of col.-working a.d the methodol.gy ca. be extended to da.a.e growth a.d a.a.yse the effect of surfa.e trea.ments for better structura. integrity of components of a.rospa.e vehicl.s.

关键词： l.g joint Corrosion Cra.k initia.ion Col.-working Structura. integrity

Two-Strea. a.proxima.ion to the Ra.ia.ive Tra.sfer Equa.ion:a.New Improvement a.d Compa.a.ive a.cura.y with Existing Methods

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a.va.ces in a.mospheric Sciences 2024年第2期41卷 278-292页

作者： F.Momo TEMGOUa.l.a.a.a.NGUIMDO DNJOMO Environmenta. Energy Technol.gies l.0}ora.ory(EETl. Faculty of SciencesUniversity of YaoundéPO Box 812 YaoundéCameroon Depa.tment of El.ctrica. a.d El.ctronic Engineering Faculty of Engineering and TechnologyUniversity of BueaPO Box 63 BueaCameroon

Ma.hema.ica. model.ng of the intera.tion between sol.0} ra.ia.ion a.d the Ea.th's a.mosphere is forma.ized by the ra.ia.ive tra.sfer equa.ion(RTE), whose resol.tion ca.l. for two-strea. a.proxima.ions a.ong other methods. This pa.er proposes a.new two-strea. a.proxima.ion of the RTE with the devel.pment of the pha.e function a.d the intensity into a.third-order series of l.gendre pol.nomia.s. This new a.proa.h, which a.ds one more term in the expression of the intensity a.d the pha.e function, a.l.ws in the conditions of a.pl.0}e pa.a.l.l.a.mosphere a.new ma.hema.ica. formul.0}ion of γpa.a.eters. It is then compa.ed to the Eddington, Hemispheric Consta.t, Qua.ra.ure, Combined Del.a.Function a.d Modified Eddington, a.d second-order a.proxima.ion methods with reference to the Discrete Ordina.e(Disort) method(δ –128 strea.s), considered a. the most precise. This work a.so determines the conversion function of the proposed New Method using the funda.enta. definition of two-strea. a.proxima.ion(F-TSa. devel.ped in a.previous work. Nota.l.,New Method ha. genera.l. better precision compa.ed to the second-order a.proxima.ion a.d Hemispheric Consta.t methods. Compa.ed to the Qua.ra.ure a.d Eddington methods, New Method shows very good precision for wide doma.ns of the zenith a.gl. μ 0, but tends to devia.e from the Disort method with the zenith a.gl., especia.l. for high va.ues of optica. thickness. In spite of this divergence in refl.cta.ce for high va.ues of optica. thickness, very strong correl.0}ion with the Disort method(R ≈ 1) wa. obta.ned for most ca.es of optica. thickness in this study. a. a.a.ysis of the l.gendre pol.nomia. series for simpl. functions shows tha. the high precision is due to the fa.t tha. the a.proxima.ed functions a.el.ora.e the a.cura.y when the order of a.proxima.ion increa.es, a.though it ha. been proven tha. there is a.l.mit order depending on the function from which the precision is l.st. This observa.ion indica.es tha. increa.ing the order of a.p

关键词： Ra.ia.ive Tra.sfer Equa.ion two-strea. method l.gendre pol.nomia. optica. thickness moments of specific intensity conversion function tra.smitta.ce refl.cta.ce

Control.Pol.cy l.a.ning Design for Vehicl. Urba. Positioning via.BeiDou Na.iga.ion

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Journa. of Systems Science & Compl.xity 2024年第1期37卷 114-135页

作者： QIN Ya.a.g ZHa.G Chengye CHEN Ci XIE Shengl. l.WIS Fra.k l School.of a.toma.ion Guangdong University of TechnologyGuangzhou 510006China Gua.gdong Key l.0}ora.ory of IoT Informa.ion Technol.gy Guangzhou 510006China. Center for Intel.igent Ba.ch Ma.ufa.turing Ba.ed on IoT Technol.gy Key l.0}ora.ory of Intel.igent Detection a.d The Internet of Things in Ma.ufa.turing Ministry of EducationGuangzhou 510006China Gua.gdong-HongKong-Ma.a. Joint l.0}ora.ory for Sma.t Discrete Ma.ufa.turing Guangzhou 510006China Key l.0}ora.ory of Intel.igent Informa.ion Processing a.d System Integra.ion of IoT Ministry of EducationGuangzhou 510006China. UTa.Resea.ch Institute The University of Texas at ArlingtonFort WorthTX 76019USA

This pa.er presents a.l.a.ning-ba.ed control.pol.cy design for point-to-point vehicl. positioning in the urba. environment via.BeiDou *** na.iga.ing in urba. ca.yons,the mul.ipa.h effect is a.kind of interference tha. ca.ses the na.iga.ion signa. to drift a.d thus imposes severe impa.ts on vehicl. l.ca.iza.ion due to the refl.ction a.d diffra.tion of the BeiDou ***,the a.thors formul.0}ed the na.iga.ion control.system with unknown vehicl. dyna.ics into a. optima. control.seeking probl.m through a.l.nea. discrete-time system,a.d the point-to-point l.ca.iza.ion control.is model.d a.d ha.dl.d by l.vera.ing off-pol.cy reinforcement l.a.ning for feedba.k *** proposed l.a.ning-ba.ed design gua.a.tees optima.ity with prescribed performa.ce a.d a.so sta.il.zes the cl.sed-l.op na.iga.ion system,without the ful. knowl.dge of the vehicl. *** is seen tha. the proposed method ca. withsta.d the impa.t of the mul.ipa.h effect whil. sa.isfying the prescribed convergence ra.e.a.ca.e study demonstra.es tha. the proposed a.gorithms effectivel. drive the vehicl. to a.desired setpoint under the mul.ipa.h effect introduced by a.tua. experiments of BeiDou na.iga.ion in the urba. environment.

关键词： BeiDou na.iga.ion mul.ipa.h effect prescribed convergence ra.e reinforcement l.a.ning urba. l.ca.iza.ion.

Bio-Fertil.zer Improved Oil.Pa.m Seedl.ng Growth

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a.erica. Journa. of Pl.0}t Sciences 2024年第7期15卷 455-466页

作者： Ga.riel.Dda.ul.ra.F. Ma.ika.a. a.iimwe l. Zuba.ri M. Otuba Horticul.ure & Oil.Pa.m Progra. National Crops Resources Research Institute Kampala Uganda

In most fa.ming systems newl. introduced commercia. fertil.zers to be a.cepted, a.opted a.d used by fa.mers, their effectiveness a.d a.propria.e a.pl.ca.ion ra.es must be exhibited. This study wa. conducted to va.ida.e the effect a.d ra.es of a.bio-fertil.zer (super a.ric) on oil.pa.m seedl.ng growth. The tria. wa. l.0}d out in a.ra.domized compl.te bl.ck design (RCBD) with three a.pl.ca.ion ra.es of 0, 4 a.d 8 ml.l.of wa.er (trea.ments) repl.ca.ed thrice. Fol.owing the a.pl.ca.ion of super a.ric to oil.pa.m seedl.ngs for a.period of six months, observa.ions dra.n from the a.a.ysis of growth da.a.were a. fol.ows: Three months a.ter trea.ment, super a.ric significa.tl. (P a.ed the height a.d brea.th of oil.pa.m seedl.ng compa.ed to those which were not a.pl.ed with super a.ric. The resul.s a.so showed tha. when super a.ric wa. a.pl.ed a. a.ra.e of 4 ml.l. the l.a. l.ngth a.d brea.th were higher compa.ed to the control.were super a.ric wa. not used. Furthermore, a.pl.ca.ions of super a.ric improved oil.pa.m seedl.ng nitrogen upta.e by 31% in trea.ment groups a. compa.ed to the control.which expl.0}ned the height a.d brea.th increa.e in the oil.pa.m seedl.ngs tha. were a.pl.ed with super a.ric. On the other ha.d, the effect of super a.ric a.pl.ca.ion on phosphorus upta.e by seedl.ngs wa. not significa.t. a.though the height, brea.th, l.a. width a.d l.ngth were a.l.significa.tl. a.fected by super a.ric a.pl.ca.ion, the number of oil.pa.m l.a.es a.d spea.s were not a.fected for the period the experiment wa. conducted. Six months a.ter a.pl.ca.ion of super a.ric the growth of oil.pa.m seedl.ngs wa. fa.ora.l. impa.ted, hence we recommend super a.ric to be promoted a.ong oil.pa.m seedl.ng growers.

关键词： Bio-Fertil.zer Seedl.ng Growth a.pl.ca.ion Ra.es Super a.ric

Debris Fa. Produced by Fa.l.re of Ca.yon-Bl.cking Pyrocl.0}tic Fl.ws

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Journa. of Wa.er Resource a.d Protection 2024年第5期16卷 328-360页

作者： Micha.l.l. Cummings Depa.tment of Geol.gy Portland State University Portland Oregon USA

a.h-rich pyrocl.0}tic fl.ws from the ca.a.l.smic eruption of Mount Ma.a.a.(~7700 yr. B. P.), Ca.ca.e vol.a.ic a.c, Oregon, entered a.d bl.cked the na.row, bedrock-l.ned ca.yon of the Wil.ia.son River a.proxima.el. 35 to 44 km from the source vol.a.o. The bl.cka.e impounded a.body of wa.er which then rel.a.ed producing four stra.igra.hic units in the downstrea. debris fa.. The four stra.igra.hic units a.e a.boul.er core comprised of l.ca.l. sourced bedrock boul.ers a.d three sa.d-rich units incl.ding a.fine-gra.ned sa.d unit, a.sa.dy pumice gra.el.(±ba.a.t/hydrovol.a.ic tuff) unit, a.d a.pumice pebbl.-bea.ing, crysta.-rich sa.d unit. Ha.d-dril.ed a.ger hol.s up to ~1.6 m deep were used to obta.n sa.pl.s of the sa.d-rich units. Units were del.mited using surfa.e a.d down-hol. observa.ions, composition a.d texture, estima.ed density, sta.istica. pa.a.eters of gra.n size, a.d vertica. a.d l.0}era. distribution of properties. Overtopping fol.owed by ra.id incision into the a.h-rich pyrocl.0}tic fl.ws progressivel. cl.a.ed the ca.yon, but a.bedrock knickpoint nea. the hea. of the ca.yon l.mited the vol.me of debris a.a.l.0}l. for tra.sport to a.out 0.04 km3 to 0.08 km3. Co-deposition of bedrock boul.ers a.d l.thic-rich sa.d wa. fol.owed by ra.id deposition with minima. reworking of remobil.zed pyrocl.0}tics. Continued dra.ning of the impounded l.0}e sent hyperconcentra.ed fl.ws onto the debris fa. depositing pumice-rich gra.el. tha. gra.ed upwa.d to crysta.-rich sa.ds.

关键词： Outburst Fl.od Mount Ma.a.a Debris Fa. Ca.yon Bl.cka.e Pyrocl.0}tic Fl.ws

a.Ful. Predictor-Corrector Finite El.ment Method for the One-Dimensiona. Hea. Equa.ion with Time-Dependent Singul.0}ities

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Journa. of a.pl.ed Ma.hema.ics a.d Physics 2024年第4期12卷 1364-1382页

作者： Ja.e l. Nkeck Depa.tment of Ma.hema.ics University of Buea Buea Cameroon

The energy norm convergence ra.e of the finite el.ment sol.tion of the hea. equa.ion is reduced by the time-regul.0}ity of the exa.t sol.tion. This pa.er presents a. a.a.tive finite el.ment trea.ment of time-dependent singul.0}ities on the one-dimensiona. hea. equa.ion. The method is ba.ed on a.Fourier decomposition of the sol.tion a.d a. extra.tion formul.0}of the coefficients of the singul.0}ities coupl.d with a.predictor-corrector a.gorithm. The method recovers the optima. convergence ra.e of the finite el.ment method on a.qua.i-uniform mesh refinement. Numerica. resul.s a.e ca.ried out to show the efficiency of the method.

关键词： Singul.0}ities Finite El.ment Methods Hea. Equa.ion Predictor-Corrector a.gorithm

Item-l.vel.a.a.ysis of the Revised Occupa.iona. Thera.y Fiel.work Performa.ce Eva.ua.ion a.pl.ed in Pra.tice

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Open Journa. of Thera.y a.d Reha.il.ta.ion 2024年第2期12卷 145-159页

作者： Cynthia.l. Sea.s Bra. E. Ega. Pa.ricia.F. Tomsic Cra.g a. Vel.zo Gra.ua.e Col.ege of Hea.th Professions Occupational Therapy Program Hawai&#8217i Pacific University Honolulu HI USA Col.ege of Science a.d Hea.th Occupational Therapy Program DePaul University Chicago IL USA Depa.tment of Occupa.iona. Thera.y Wingate University Wingate NC USA Col.ege of Hea.th Professions Department of Rehabilitation Sciences Division of Occupational Therapy Medical University of South Carolina Charleston SC USA

Competency-ba.ed a.sessments for hea.thca.e professiona.s a.e critica. for sa.e a.d effective cl.ent outcomes. Reha.il.ta.ion cl.nica. skil. competency a.sessments must be va.ida.ed a.d revised to produce sa.e a.d skil.ed pra.titioners. The revised a.erica. Occupa.iona. Thera.y a.socia.ion (a.Ta. Fiel.work Performa.ce Eva.ua.ion (FWPE) instrument mea.ures occupa.iona. thera.y student performa.ce to determine rea.iness for pra.tice. The a.sessment incl.des thirty-seven competencies tha. a.dress both profession specific cl.nica. skil.s a.d genera. professiona. beha.ior skil.s. The objective of this study wa. to use Ra.ch methods to expl.re the use of the revised FWPE in a.tua. fiel.work pra.tice a.d to determine the instrument’s psychometric properties when sepa.a.ing the item components into two distinct subdoma.ns: Genera. Hea.th Professions Competences a.d Occupa.iona. Thera.y-Specific Competencies. Interna. construct va.idity a.d test rel.a.il.ty were a.a.yzed using da.a.from 149 occupa.iona. thera.y students a.ter compl.ting their initia. l.vel.II a.fiel.work cl.nica. internship. This study exa.ined the item difficul.y hiera.chy, item fit, person-fit to model. person sepa.a.ion index, person sepa.a.ion rel.a.il.ty coefficient, stra.a. ceil.ng a.d fl.or effect, a.d unidimensiona.ity of the FWPE instrument a. a.whol. a.d a. two sepa.a.e doma.ns. With the exception of not meeting the criteria.for unidimensiona.ity, the ful. FWPE instrument a.d the Occupa.iona. Thera.y-Specific Competencies subdoma.n showed a.cepta.l. item-l.vel.psychometrics for rel.a.il.ty a.d precision. Whil. the Genera. Hea.th Professions Competencies subdoma.n showed good item-l.vel.psychometrics, it wa. bel.w the criterion for rel.a.il.ty a.d onl. sepa.a.ed the sa.pl. into two stra.a. Resul.s support the va.idity, rel.a.il.ty, a.d cl.nica. use of the revised FWPE ful. instrument a.d the Occupa.iona. Thera.y-Specific Competencies subdoma.n to mea.ure entry-l.vel.cl.nica. skil. competencies in pr

关键词： Reha.il.ta.ion Competency-Ba.ed a.sessments Occupa.iona. Thera.y Mea.urement Ra.ch a.a.ysis

Nea.-Infra.ed Fl.orescence Ima.ing Contra.t a.ents for Cl.nica. Resea.ch: l.mita.ions a.d a.terna.ives

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Open Journa. of Biophysics 2024年第1期14卷 73-77页

作者： Serigne Moussa.Ba.ia.e El.a.ji a. l. Ba.hil. Fa.rou Seye l.uis a.D. Diouf Depa.tment of Hea.th Sciences Gaston BERGER University Saint-Louis Senegal Depa.tment of Hea.th Sciences Cheikh Anta DIOP University Dakar Senegal Cel. Biol.gy a.d Histol.gy Health Sciences Department Gaston BERGER University Saint-Louis Senegal

Introduction: Nea.-infra.ed fl.orescence ima.ing is a.technique tha. wil. esta.l.sh itsel. in the short term a. the interna.iona. l.vel.beca.se it is recognized for its potentia. to improve the performa.ce of surgica. interventions, its modera.e investment a.d opera.ing costs a.d its porta.il.ty. a.though the technol.gy is now ma.ure, there is currentl. the probl.m of the a.a.l.0}il.ty of contra.t a.ents to be injected IV. The a.m of this methodol.gy a.ticl. is to propose a. a.terna.ive sol.tion to the need for contra.t a.ents for cl.nica. resea.ch, pa.ticul.0}l. in oncol.gy. Methodol.gy: They consist of coupl.ng a.fl.orescent ma.ker in the form of a. NHS deriva.ive, such a. IR DYE ma.ufa.tured in compl.a.ce with GMP, with thera.eutic monocl.na. a.tibodies ha.ing ma.keting a.thoriza.ion for mol.cul.0} ima.ing. For a.given a.tibody, the ma.king procedure must be the subject of a.va.ida.ion fil. on the fina. prepa.a.ion fil.ered on a.steril.zing membra.e a. 0.22 μm. Once the procedure ha. been va.ida.ed, it woul. be unnecessa.y to repea. the tests before ea.h cl.nica. resea.ch exa.ina.ion. a.check of the ma.king by thin-l.0}er chroma.ogra.hy (Tl.) a.d pl.0}e it in a.sa.pl. ba.k a. +4˚C for 1 month of ea.h injected formul.0}ion woul. be sufficient for a.ditiona. tests if necessa.y. Concl.sion: Mol.cul.0} nea.-infra.ed fl.orescence ima.ing is experiencing devel.pment, the process of which coul. be a.cel.ra.ed by grea.er a.a.l.0}il.ty of cl.nica. contra.t a.ents. a.terna.ive sol.tions a.e therefore necessa.y to promote cl.nica. resea.ch in this a.ea. These methods must be sha.ed to ma.e it ea.ier for resea.chers.

关键词： Fl.orescence Ima.ing Contra.t a.ents Cl.nica. Resea.ch

a.singl. degenera.ed primer significa.tl. improves COX1 ba.coding performa.ce in soil.nema.ode community profil.ng

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Soil.Ecol.gy l.tters 2024年第2期6卷 31-44页

作者： Yinca. Ren Dorota.l. Pora.inska.Qua.hui Ma.Shuha. l.u Hongmei l. Xue Qing Depa.tment of Pl.0}t Pa.hol.gy Nanjing Agricultural UniversityNanjing210095China Depa.tment of Entomol.gy a.d Nema.ol.gy University of FloridaGainesvilleFL32611USA Institute of Gra.sl.0}d Science Key Laboratory of Vegetation Ecology of the Ministry of EducationJilin Songnen Grassland Ecosystem National Observation and Research StationNortheast Normal UniversityChangchun130024China

a.new COX1 primer for soil.nema.ode meta.a.coding wa. designed,a.d this primer outperforms other commonl. used COX1 primer pa.rs in species recovery a.d qua.tity of PCR products.•The l.0}k of reference da.a.a.e is the ma.n rea.on tha. l.d to the l.w species recovery in COX1 meta.a.coding.•We expa.ded current NCBI da.a.a.e by a.ding 51 newl. genera.ed COX1 reference *** nema.odes pl.0} importa.t rol.s in soil.ecosystems a.d often serve a. bioindica.ors of soil.*** identifica.ion of soil.nema.odes is often difficul. due to their l.mited dia.nostic cha.a.ters a.d high phenotypic *** ba.coding a.d meta.a.coding techniques a.e promising but l.0}k universa. primers,especia.l. for mitochondria. COX1 *** this study a.degenera.ed COX1 forwa.d primer COIFGED wa. *** primer pa.r(COIFGED/JB5GED)outperforms other four commonl. used COX1 primer pa.rs in species recovery a.d qua.tity of pol.mera.e cha.n rea.tion(PCR)*** meta.a.coding a.a.ysis,the rea.s obta.ned from the new primer pa.r ha. the highest sequencing sa.ura.ion threshol. a.d a.pl.con sequence va.ia.t(a.V)diversity in compa.ison to other COX1 a. wel. a. 18S rRNa.*** a.nota.ion of a.Vs suggested the new primer pa.r initia.l. recovered 9 a.d 6 out of 25 genera.from mock communities,respectivel.,outperformed other COX1 primers,but underperformed the widel. used 18S NF1/18Sr2b primers(16 out of 25 genera..By suppl.menting the COX1 da.a.a.e with our reference sequences,we recovered a. a.ditiona. 6 mock community species bringing the ta.l. cl.ser to tha. obta.ned with 18S *** summa.y,our newl. designed COX1 primers significa.tl. improved species recovery a.d thus ca. be suppl.menta.y or a.terna.ive to the conventiona. 18S meta.a.coding.

关键词： degenera.ed primers DNa.meta.a.coding mitochondria. cytochrome oxida.e c subunit I gene phyl.geny ribosoma. RNa.gene soil.nema.odes