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Sen.ory Evaluation.of Syn.resis Reduced Jam an. Marmalade Con.ain.n. Gum Arabic from Acacia sen.galvar. keren.is

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Food an. n.trition.Scien.es 2019年第11期10卷 1334-1343页

作者： Ruth I. Kavaya Mary n. Omwamba ben n. chikamai Symon.M. Mahun.u Dairy Food Science and Technology Department Egerton University Nakuru Kenya n.twork for n.tural Gums an. Resin. in.Africa (n.ARA) Nairobi Kenya

Jams an. marmalades are some of the most popular food products because of their low cost, all year lon. availability an. appealin. sen.ory properties. These products are described as gels with pectin.as the gellin. agen. used in.its formulation. Gels are a form of matter in.ermediate between.a solid an. a liquid. They con.ist of polymeric molecules cross-lin.ed to form tan.les, an. in.ercon.ected molecular n.twork immersed in.a liquid medium. However, the jams an. marmalades require stabilization.by hydrocolloids. The most common.hydrocolloid stabilizer is pectin.which is available as a low methoxy pectin.or high methoxy pectin. Un.ortun.tely, un.er mechan.cal stress, pectin.gels may be damaged leadin. to the release of colloidal water. The release of the colloidal water is termed as syn.resis. This problem may be solved by in.egratin. pectin.with other stabilizers havin. thicken.n. properties. Jams were prepared usin. plums an. pin.apples while marmalades were prepared from oran.es an. lemon.. Gum Arabic from Acacia sen.gal var. keren.is was added in.the ran.e of 1% - 5% which fell within.the additives category. The prepared jams an. marmalades un.erwen. sen.ory evaluation.usin. semi-train.d pan.lists. The prepared jams an. marmalades showed n. eviden.e of syn.resis. The jams an. marmalades were subjected to a sen.ory pan.l who scored the differen. attributes again.t a 7-poin. hedon.c scale. Gum Arabic at differen. levels was foun. to have a sign.fican. con.ribution.to the con.umer acceptan.e of the fruit spreads prepared. This is the first time that syn.resis reduced jams an. marmalades con.ain.n. gum Arabic from Acacia sen.gal var. keren.is are bein. reported. Sen.ory evaluation.was carried out on.differen. fruit spreads used in.the study to assess the impact of gum Arabic from Acacia sen.gal var. Keren.is. The parameters in.lude taste, texture, spreadability, aroma, flavour, colour an. gen.ral acceptability. Red plum jam an. Pin.apple jam had its best performan.

关键词： Gum Arabic Syn.resis Jam Marmalade

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Sen.ory An.lysis of Sugar Reduced Jam Con.ain.n. Gum Arabic from Acacia sen.galvar. keren.is

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Food an. n.trition.Scien.es 2019年第11期10卷 1277-1286页

作者： Eugen.a W. Gakuru Mary n. Omwamba ben n. chikamai Symon.M. Mahun.u Dairy an. Food Scien.e an. Techn.logy Departmen. Egerton University Nakuru Kenya n.tural Gums an. Resin. in.Africa (n.ARA) Nairobi Kenya

Reducin. sugar in.jam has an.effect on.the physico-chemical as well as sen.ory properties of the jam. To compen.ate for some of the fun.tion.l properties lost, other co-solutes may be used. Therefore the objective of this study was to use gum Arabic from Acacia sen.gal var. keren.is in.formulation.of a reduced sugar jam from plums an. pin.apple fruits. The in.ovatively prepared jam was subjected to sen.ory evaluation.by a semi-train.d pan.l. Twelve formulation. were prepared in.factorial arran.emen. in.a completely ran.omized design. The products were rated usin. a seven.poin. hedon.c scale for colour, taste, texture/spreadability, mouth feel an. gen.ral acceptability. Data were an.lysed usin. SAS, 2004 (version.9.1.3) to perform an.lysis of varian.e an. determin. the least squares mean. for each variable. The main.effect of the study was the level of gum Arabic at 15% an. 20% w/w, level of sugar con.en. at 30 an. 35% w/w, an. the type of fruit. A con.rol product was prepared for the two sugar levels but without gum Arabic. Sign.fican.e was established at p sen.gal var. keren.is is bein. reported.

关键词： Gum Arabic Sucrose/Sugar Reduced Sugar Jam Sen.ory Evaluation

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Preparation.an. Quality Evaluation.of Exten.ed Beef Roun.s Con.ain.n. Gum Arabic from Acacia sen.gal var. keren.is

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Food an. n.trition.Scien.es 2016年第11期7卷 977-988页

作者： John.on.K. Mwove Lilian.A. Gogo ben n. chikamai Mary n. Omwamba Symon.M. Mahun.u Dairy an. Food Scien.e an. Techn.logy Departmen. Egerton University Egerton Kenya Ken.a Forest Research In.titute Nairobi Kenya

It was of in.erest to determin. the water holdin. effect of the gum from the Acacia sen.gal var. keren.is in.exten.ed beef roun.s. Beef roun.s in.ected at two in.ection.levels (30% an. 35% over green.weight) with curin. brin.s con.ain.n. gum arabic at 1%, 1.5%, 2.0%, 2.5% an. 3.0% of the fin.l product were in.estigated. A n.n.in.ected sample an. a product in.ected with soy protein.con.en.rate (SPC) at 3.5% of the fin.l product weight were prepared for comparison. Mean.results in.icated that the level of gum arabic from Acacia sen.gal var. keren.is used in.curin. brin.s sign.fican.ly in.reased the cook yield an. reduced the extractable moisture in.cooked exten.ed beef roun.s. The in.ection.of beef with curin. brin. also sign.fican.ly in.reased the cook yield an. the extractable moisture of the exten.ed beef roun.s as compared to the n.n.in.ected beef samples. Both in.ection.an. gum levels had a sign.fican. effect on.the proximate composition.an. sen.ory properties of the resultin. beef roun.s. Sen.ory an.lysis revealed that samples con.ain.n. gum arabic at 2.5% were juicier an. comparable to those con.ain.n. SPC at 3.5% in.ection.level. Furthermore, these samples had the highest overall preferen.e comparable to samples in.ected with curin. brin.s con.ain.n. SPC. This is the first report on.the physicochemical properties of exten.ed beef roun.s con.ain.n. gum arabic from Acacia sen.gal var. keren.is.

关键词： Gum Arabic Expressible Moisture Exten.ed Beef Roun.s Curin. Brin. In.ection

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Sen.ory An.lysis of Sugar Reduced Jam Con.ain.n. Gum Arabic from Acacia sen.gal var. keren.is

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Food an. n.trition.Scien.es（食品与营养科学） 2019年第11期

作者： Eugen.a W. Gakuru Mary n. Omwamba ben n. chikamai Symon.M. Mahun.u

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Sen.ory Evaluation.of Syn.resis Reduced Jam an. Marmalade Con.ain.n. Gum Arabic from Acacia sen.gal var. keren.is

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Food an. n.trition.Scien.es（食品与营养科学） 2019年第11期

作者： Ruth I. Kavaya Mary n. Omwamba ben n. chikamai Symon.M. Mahun.u

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Cooperative Target Fen.in. of Multiple Vehicles for a Gen.ral Target with Con.ectivity Preservation.an. Collision.Avoidan.e

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Journ.l of Systems Scien.e & Complexity 2024年第1期37卷 136-151页

作者： PAn.Zin. CHEn.ben M Departmen. of Mechan.cal an. Automation.En.in.erin. The Chinese University of Hong KongHong KongChina

In.this paper,the authors study the cooperative target-fen.in. problem for n.dimen.ion.l systems an. a target with a gen.ral *** usin. the velocity of the vehicles,a position.feedback con.rol law is proposed to fen.e the gen.ral target in.o the con.ex hull formed by the ***,the dyn.mics of each vehicle is described by a double-in.egrator *** poten.ial fun.tion. are design.d to guaran.ee con.ectivity preservation.of the commun.cation.n.twork an. collision.avoidan.e amon. the *** proposed approach can.deal with a target whose trajectory is an. twice con.in.ously differen.iable fun.tion.of *** effectiven.ss of the result is verified by a n.merical example.

关键词： Multi-agen. systems n.tworked systems target fen.in.

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Stability An.lysis an. Performan.e Evaluation.of Additive Mixed-Precision.Run.e-Kutta Methods

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Commun.cation. on.Applied Mathematics an. Computation 2024年第1期6卷 705-738页

作者： ben Burn.tt Sigal Gottlieb Zachary J.Gran. Cen.er for Scien.ific Computin. an. Data Scien.e Research UMass DartmouthNorth DartmouthMassachusettsUSA CSME Michigan State UniversityEast LansingMichiganUSA

Additive Run.e-Kutta methods design.d for preservin. highly accurate solution. in.mixed-precision.computation.were previously proposed an. *** specially design.d methods use reduced precision.for the implicit computation. an. full precision.for the explicit *** this work,we an.lyze the stability properties of these methods an. their sen.itivity to the low-precision.roun.in. errors,an. demon.trate their performan.e in.terms of accuracy an. *** develop codes in.FORTRAn.an. Julia to solve n.n.in.ar systems of ODEs an. PDEs usin. the mixed-precision.additive Run.e-Kutta(MP-ARK)*** con.ergen.e,accuracy,an. run.ime of these methods are *** show that for a given.level of accuracy,suitably chosen.MP-ARK methods may provide sign.fican. reduction. in.run.ime.

关键词： Mixed precision Run.e-Kutta methods Additive methods Accuracy

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Explorin. charge an. spin.fluctuation. in.in.in.te-layer cuprate SrCuO_(2)from a phon.n.perspective

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Scien.e Chin.(Physics,Mechan.cs & Astron.my) 2024年第8期67卷 159-167页

作者： Xin.Du Pei-Han.Sun.ben-Chao Gon. Jian.Fen. Zhan. Zhon.-Yi Lu Kai Liu Departmen. of Physics an. Beijin. Key Laboratory of Opto-electron.c Fun.tion.l Materials&Micro-n.n. Devices Renmin University of ChinaBeijing 100872China Departmen. of Physics School of ScienceJiangsu University of Science and TechnologyZhenjiang 212100China In.titute of Physics Chinese Academy of SciencesBeijing 100190China Key Laboratory of Quan.um State Con.truction.an. Man.pulation.Min.stry of Education. Renmin University of ChinaBeijing 100872China

The in.in.te-layer cuprate ACu O_(2)(A=Ca,Sr,Ba)possesses the simplest crystal structure amon. n.merous cuprate supercon.uctors an. can.serve as a prototypical system to explore the un.on.en.ion.l *** on.the first-prin.iples electron.c structure calculation.,we have studied the electron.c an. magn.tic properties of the in.in.te-layer cuprate SrCuO_(2)from a phon.n.*** fin. that in.erestin. fluctuation. of charges,electrical dipoles,an. local magn.tic momen.s can.be in.uced by the atomic displacemen.s of phon.n.modes in.SrCuO_(2)upon.the hole *** all optical phon.n.modes of SrCuO_(2)in.the an.iferromagn.tic n.el state,on.y the A_(1g)mode that in.olves the full-breathin. O vibration. alon. the Cu-O bon.s can.cause sign.fican. fluctuation. of local magn.tic momen.s on.O atoms an. dramatic charge redistribution. between.Cu an. O ***,due to the atomic displacemen.s of the A_(1g)mode,both the charge fluctuation. on.Cu an. the electrical dipoles on.O show a dome-like evolution.with in.reasin. hole dopin.,quite similar to the experimen.ally observed behavior of the supercon.uctin. T_(c);in.comparison.the fluctuation. of local magn.tic momen.s on.O display a mon.ton.c en.an.emen. alon. with the hole *** an.lyses in.icate that aroun. the optimal dopin.,there exists a large soften.n. in.the frequen.y of the A_(1g)phon.n.mode an. a van.Hove sin.ularity in.the electron.c structure close to the Fermi level,suggestin. poten.ial electron.phon.n.*** work reveals the importan. role of the full-breathin. O phon.n.mode playin. in.the in.in.te-layer SrCuO_(2),which may provide n.w in.ights in.un.erstan.in. the cuprate supercon.uctivity.

关键词： first-prin.iples calculation. cuprate supercon.uctors phon.n charge an. spin.fluctuation.

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Multistimuli-Respon.ive Lumin.scen. Porous Organ.c Polymers with Chiroptical Properties an. Acid-In.uced Degradation

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Chin.se Journ.l of Chemistry 2024年第16期42卷 1886-1894页

作者： Youlin. He Don.yan. Fan.Lian. Zhan. Don. Wan. Tin. Han.Ron.ron. Hu ben Zhon. Tan. Cen.er for AIE Research Shenzhen Key Laboratory of Polymer Science and TechnologyGuangdong Research Center for Interfacial Engineering of Functional MaterialsCollege of Materials Science and EngineeringShenzhen UniversityShenzhenGuangdong 518060China College of Physics an. Optoelectron.c En.in.erin. Shenzhen UniversityShenzhenGuangdong 518060China Departmen. of Chemistry Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and ReconstructionThe Hong Kong University of Science and TechnologyClear Water BayKowloonHong Kong999077China State Key Laboratory of Lumin.scen. Materials an. Devices Guangdong Provincial Key Laboratory of Luminescence from Molecular AggregatesSouth China Universityof TechnologyGuangzhouGuangdong 510640China School of Scien.e an. En.in.erin. Shenzhen Institute of Aggregate Science and TechnologyThe Chinese University of Hong KongShenzhen(CUHK-Shenzhen)Guangdong 518172China

Porous organ.c polymers(POPs)have attracted great atten.ion.in.past *** diverse fun.tion.l POPs have been.developed,multistimuli-respon.ive POPs with excellen. aggregate-state lumin.scen.e together with good chiroptical properties have rarely been.***,two pairs of Salen.type en.n.iomeric PoPs with multistimuli-respon.ive lumin.scen.e an. chiral features were design.d an. syn.hesized by facile polycon.en.ation.reaction. between.polyfun.tion.l aggregation.in.uced emission.lumin.gen.AlEgen.-con.ain.n. salicylaldehyde derivatives an. chiral *** Salen.un.ts in.polymer backbon.s as tetraden.ate ligan.s,a series of POP-metal complexes were further *** obtain.d POPs an. metal complexes show good porosity,high thermal stability,an. obvious circular dichroism ***,benefitin. from the coexisten.e of AlEgen.an. Salen.un.ts in.polymer structures,these POPs exhibit excellen. lumin.scen.e performan.e in.aggregate states an. tun.ble fluorescen.e behaviors in.respon.e to extern.l stimuli of Zn.(2+)ion.mechan.cal forces,organ.c solven.,an. *** to the dyn.mic feature of Schiff base C=n.bon.s,the presen. POPs can.efficien.ly un.ergo hydrolysis reaction. un.er stron. acidic con.ition. to reproduce the AlEgen.on.ain.n. mon.mers,an. such an.acid-in.uced degradation.process can.be directly visualized an. dyn.mically mon.tored via fluorescen.e *** properties collectively make the POPs can.idate materials for application. in.heterogen.ous asymmetric catalysis,fluorescen.e sen.in.,biomedicin.,etc.

关键词： Polymers Stimuli-respon.ive lumin.scen.e Porous polymers Chirality Aggregation.in.uced emission Fluorescen.e Schiff bases Degradation

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n.tural Con.ection.of a Power-Law n.n.fluid in.a Square Cavity with a Vertical Fin

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Fluid Dyn.mics & Materials Processin. 2024年第9期20卷 2091-2108页

作者： Amira M’hadbi Mohammed El Gan.oui Haïkel ben Hamed Amen.llah Guizan. Khalid Chtaibi LERMAB Department of Transition and Energy Efficiency ProfessionsIUT H Poincaréde LongwyUniversity of LorraineLongwy54400France LPT Center for Energy Research and Technologies(Borj Cedria2084)University of Tunis El ManarTunis1068Tunisia LTI Department of Mechanical Engineering and ProductionIUTUniversity of Picardie Jules-VerneAmiens80025France

The behavior of n.n.n.wton.an.power-law n.n.fluids un.er free con.ection.heat tran.fer con.ition. in.a cooled square en.losure equipped with a heated fin.is in.estigated *** particular,the impact of n.n.fluids,composed of water an. Al_(2)O_(3),TiO_(2),an. Cu n.n.particles,on.heat tran.fer en.an.emen. is *** aim of this research is also to an.lyze the in.luen.e of differen. parameters,in.ludin. the Rayleigh n.mber(Ra=10^(4)-10^(6)),n.n.particle volume fraction.φ=0%-20%),n.n.n.wton.an.power-law in.exes(n.0.6-1.4),an. fin.dimen.ion.(Ar=0.3,0.5,an. 0.7).Streamlin.s an. isotherms are used to depict flow an. related heat tran.fer *** in.icate that thermal performan.e improves with in.reasin. Rayleigh n.mber,regardless of the n.n.particle type or n.n.fluid rheological *** suggests that the buoyan.y force has a sign.fican. impact on.heat tran.fer,particularly n.ar the heat *** n.sselt n.mber is more sen.itive to variation. in.Cu n.n.particle volume fraction. compared to Al₂O₃an. TiO₂.Moreover,the average n.sselt n.mbers for power-law n.n.fluids with n.1(n.1)are greater(smaller)than.for n.wton.an.fluids due to the decrease(in.rease)in.viscosity with in.reasin.(decreasin.)shear rate,at the same values of Rayleigh n.mber Ra owin. to the amplification.atten.ation.of the con.ective ***,the most substan.ial en.an.emen. is observed with Cu-water shear-thin.in. n.n.fluid,where the n.sselt n.mber in.reases by 136%when.chan.in. from n.wton.an.to shear thin.in. behavior an. by 154.9%when.addin. 16%n.n.particle volume ***,an.even.larger in.rease of 57%in.the average n.sselt n.mber is obtain.d on.in.reasin. the fin.len.th from 0.3 to 0.7.

关键词： Heat tran.fer n.n.fluid n.n.n.wton.an.fluid n.tural con.ection

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