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Sta.ic a.d Dyna.ic Mecha.ica. Properties of a.rylic Denture-Ba.e Resins Cross-Linked with Polyvinylchloride

材料科学与工程（中英文版） 2011年第4期5卷 421-430页

作者： Emma.uel rotimi Sa.iku Olusesa. Fra.k Biotida.a Depa.tment of Polymer Technology Tshwane University of Technology Lynnwoodridge 0040 South Africa

Sta.ic mecha.ica. da.a.(creep, a. room tempera.ure a.d a. different loa.ing levels) using a.three-point bending test method a.d the viscoela.tic cha.a.teristics (using the Dyna.ic Mecha.ica. Therma. a.a.yser, DMTa. a. a.tempera.ure ra.ge of between 40 °C a.d 155 °C a.d a.frequency of 1 Hz), of a.rylic denture-ba.e resins tha. incorpora.e polyvinyl chloride (PVC) power were studied. Cha.a.teristic creep curves obeying a. exponentia. growth a. a.function of time represented by: J(t) = a.+ Blog(t), where J(t) is the time-dependent deforma.ion in time, t with a.a.d B a. consta.ts, which depend on the ma.eria.s properties, a.plied loa. a.d tempera.ure, were obta.ned. There is a.gra.ua. decrea.e in stora.e modulus, E" with increa.ing tempera.ure until a.critica. tempera.ure is rea.hed which depends on the resin type. For the commercia. Perspex, a.ra.id decrea.e in modulus occurred a.ove 110 °C, which is just a.ove the norma.ly a.cepted Tg for polymethyl metha.ryla.e, PMMa. For the hea.-cured denta. resin, QC-20, the critica. tempera.ure is higher, a. a.out 120 °C. For the cold-cured denta. resin, Pour-n-cure, it softens a. a.out 70 °C a.d the Ma.um, the softening occurs a. a.out 80 °C. The low softening tempera.ures for the cold-cured a.e a.tributed to the presence of residua. monomer. However, it is importa.t to recognize the fa.t tha. the moduli of the denta. resins a.e somewha. higher tha. tha. of the commercia. Perspex a. ≈40 °C, which is just a.ove the mouth tempera.ure, 37 °C. This is a.tributed to the possibility of cross-linking, a. demonstra.ed by the limited swelling in a.etone. Sta.ic Young’s Modulus decrea.es, ma.gina.ly for a.l sa.ples tested, with increa.ing nomina. loa.ing times (1, 15.85 a.d 1,000 seconds).

关键词：聚甲基丙烯酸甲酯树脂类型聚氯乙烯动态力学静态性能交联义齿

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a.tiva.ion Energy for the Rela.ive Sta.ility of the Residua. Monomer a.d the Morphologies of Cryogenica.ly Fra.tured Surfa.es of a.rylic Denture-Ba.e/PVC Composites

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材料科学与工程（中英文版） 2010年第4期4卷 30-40页

作者： Emma.ue rotimi Sa.iku Olusea.n Fra.k Biotida.a Depa.tment of Polymer Technology Tshwane University of Technology CSIR Campus Lynnwoodridge 0040 Rep. of South Africa

The intensity of the overtone infra.ed a.sorption ba.d a. 1.62 μm due to the monomeric methyl metha.ryla.e wa. used to estima.e the rela.ive monomer concentra.ion of a.rylic denture ba.e resins. It wa. found tha. the a.ount of residua. monomer decrea.es a. first very ra.idly a.d then followed, by a.ra.her sluggish decline, but did not diminish to zero concentra.ion before rea.hing a. a.pa.ent equilibrium during the period (10 h) of cure investiga.ed. Curing tempera.ure a.fected the residua. monomer concentra.ion of the cold-cured resins. The a.pa.ent equilibrium concentra.ion wa. a.ta.ned with higher residua. monomer concentra.ion in the sa.ple cell cured a. 22 ℃ tha. tha. cured a. 60 ℃. However, there wa. no significa.t difference in the level of the residua. monomer concentra.ion between opened a.d closed cell sa.ples for the period (10 hours) of cure. a.suming a.limiting va.ue of ∞ ? ? ? ? ? ? H h, where (h) is the overtone IR pea. height a. 1.62 μm, a.d (H) being the norma.ized a.ja.ent IR pea. a. 1.672 μm, the tempera.ure-dependence of the a.tiva.ion energy for the rela.ive sta.ility of the residua. monomer wa. determined using the a.rhenius plots. Ma.eria.s cured in a.r under open conditions, needed la.ger energy (3.297 a.d 4.137 KJK-1, respectively for Denstsply Ma.um a.d Pour-n-Cure) to a.hieve some level of monomer rela.ive sta.ility tha. those stored under closed conditions (2.376 a.d 3.656 KJK-1, respectively for Denstsply Ma.um a.d Pour-n-Cure). The morphology of the cryogenica.ly fra.tured a.rylic denture resin showed some fibrilla. texture for the pure PMMa.a.d micro-doma.ns a. a.function of specific composition in the blend of PMMa.PVC, suggesting a.possible cohesive fa.lure in the ma.rix.

关键词： PVC复合材料相对稳定性表面形貌残余单体丙烯酸活化能裂隙深冷

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Rheologica. Properties of Polymers: Structure a.d Morphology of Molten Polymer Blends

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Ma.eria.s Sciences a.d a.plica.ions（材料科学与应用期刊） 2011年第1期

作者： Olura.ti Sa.iku-a.boola.Emma.el rotimi Sa.iku a.esola.Ta.reed a.egbola.Olusesa. Fra.k Biotida.a

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Ba.eline La.ora.ory Profile of HIV Positive Pa.ients on a.tiretrovira. Thera.y in Jos North Centra. Nigeria. Implica.ions for Pre-vention, Trea.ment, Ca.e a.d Support

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World Journa. of a.DS 2015年第4期5卷 328-334页

作者： Christia. Ogoegbunem Isichei Mercy Wa.ili Isichei Jea. Emile Nja. Johnson Ibidun rotimi Tinua.e a.imbola.Oyebode Cha.les Ujunwa.a.ya.a.Kenneth Emeka.Enwerem a.uba.Ishia.u a.fi Lucius Chidiebere Imoh a.exa.der Ogielu a.u Solomon a.iola.a.orose Noel Omuya.a.a.u Propser Ihena.ho Okonkwo Ngozi Ijeoma.Okoro Depa.tment of Chemica. Pa.hology Faculty of Medical Sciences University of Jos Jos University Teaching Hospital Jos Nigeria Fa.th a.ive Founda.ion Jos Nigeria Depa.tment of Surgery Faculty of Medical Sciences University of Jos Jos University Teaching Hospital Jos Nigeria Depa.tment of Chemica. Pa.hology Bingham University Jos Campus Jos Nigeria Depa.tment of Obstetrics a.d Gyna.cology Faculty of Medical Sciences University of Jos Jos Nigeria a.DS Prevention Initia.ive in Nigeria.(a.IN) Abuja Nigeria

Ba.kground: We cha.a.terized ba.eline la.ora.ory da.a.of pa.ients to identify priority trea.ment a.ea., most a.fected popula.ions, a.ticipa.ed clinica. complica.ions a.d a.sessed the potentia. burden of retention in ca.e in Jos, Pla.ea. Sta.e—North Centra. Nigeria. Methods: This study wa. a.cross-sectiona. design from Ja.ua.y 2004 to December 2005 a. Fa.th a.ive Founda.ion (Fa.). a.l pa.ticipa.ts were HIV-positive a.d underwent pre-a.tiretrovira. thera.y counseling ba.ed on the na.iona. a.tiretrovira. thera.y (a.T) guidelines a.d ba.eline la.ora.ory testing. Da.a.were ca.tured on Microsoft Excel, va.ida.ed on Epi Info a.d a.a.yzed on SPSS version 21 a. P a.ce. Results: Tota. of 1499 (463 men a.d 1036 women) pa.ticipa.ts were eva.ua.ed in this study. The a.e a.d sex rela.ed distribution of pa.ticipa.ts showed tha. ma.ority (80.3% for ma.es a.d 92.5% for fema.es) were 16 - 45 yea.s old. a.yla.e a.d crea.inine were significa.tly higher in ma.es tha. fema.es (P = .02). a.a.mia.wa. the most common ba.eline a.norma.ity (63% for fema.es a.d 58% for ma.es), while ba.eline CD4 count wa. significa.tly lower in ma.es tha. fema.es (P a.d a. one-third ha. eleva.ed liver enzymes (a.T a.d a.T). Conclusion: The ba.eline la.ora.ory profile of most HIV positive pa.ients in Jos a.d environs of North Centra.–Nigeria.wa. cha.a.terized by a.a.mia. eleva.ed crea.inine, a.d a.norma. liver tra.sa.ina.e levels (a.T a.d a.T). This pre-a.T la.ora.ory result suggests tha. HIV-positive individua.s ha.e multiple clinica. a.norma.ities which ma. require more extensive ca.e tha. just trea.ing the HIV disea.e.

关键词： Ba.eline La.ora.ory Profile HIV-Positive Pa.ients PEPFa. HTC Nigeria

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Synthesis of spinel ferrite a.d its role in the remova. of free fa.ty a.ids from deteriora.ed vegeta.le oil

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中国化学工程学报（英文版） 2021年第12期

作者： a.ewa.e a.ewuyi a.ole I.Oga.bolo Woei Jye La. rotimi a.Oderinde

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蚊虫的共生菌及其在媒介控制中的应用

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国际医学寄生虫病杂志 2007年第1期34卷 1-7页

作者： a.inkurolere rotimi Oluwa.emi 张宏宇华中农业大学植科院城市有害生物防治研究所武汉430070

许多昆虫与寄生在昆虫体表或肠道细胞中的微生物建立了共生关系。臭虫、蚜虫、猎蝽等昆虫可以依靠非最佳食物为生，这一是由于其特殊的生存环境，还由于其体内的共生微生物可以帮助合成和补充其食物中所缺乏的必需营养物质。蚊虫也与其... 详细信息

许多昆虫与寄生在昆虫体表或肠道细胞中的微生物建立了共生关系。臭虫、蚜虫、猎蝽等昆虫可以依靠非最佳食物为生，这一是由于其特殊的生存环境，还由于其体内的共生微生物可以帮助合成和补充其食物中所缺乏的必需营养物质。蚊虫也与其肠道中共生细菌有着密切的联系。成蚊喜产卵于富舍细菌的水体中，水体细菌成为蚊虫幼虫的重要食物来源。伊蚊和库蚊幼虫正常生长发育不可缺少细菌，在无菌条件下饲养，蚊虫或其他媒介昆虫不能正常发育至成熟或不能传播人畜疾病。该文对蚊虫与细菌的共生现象以及其在以下几方面的应用进行综述，（1）蚊虫共生细菌的分离与鉴定，（2）共生细菌的形成与传代，（3）共生细菌在昆虫中的分布，并讨论了经过遗传改造的蚊虫共生细菌对蚊虫防治及控制疟疾等由昆虫传播的疾病的应用前景。

关键词：蚊虫共生菌细菌媒介防治遗传改造

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Chemica. Composition of Gossypium herba.eum linn a.d its a.tioxida.t, a.tiba.teria., Cytotoxic a.d a.tima.a.ia. a.tivities

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Clinica. Complementa.y Medicine a.d Pha.ma.ology 2021年第1期1卷 68-76页

作者： rotimi a.isoye La.a.eta. Gideon a.eni a.dulra.a. Ya.a.a.a.a.omi a.a.i Sunda. Oma.e Uma. Isha. Da.da.Joseph a.iodun Chijioke Olisa. Julius a.gbogun Swesme Enyioma.a.ozie Depa.tment of Chemistry Kogi State UniversityPMB 1008AnyigbaKogi StateNigeria Depa.tment of Pure a.d a.plied Chemistry University of Fort Ha.e Alice 5700South Africa Depa.tment of Biochemistry Kogi State UniversityPMB 1008AnyigbaKogi StateNigeria Depa.tment of Biochemistry School of Life SciencesUniversity of KwaZulu-NatalWestville CampusDurban 4000South Africa Depa.tment of a.a.omy Faculty of Basic Medical SciencesCollege of Health SciencesKogi State University AnyigbaPMB 1008AnyigbaKogi StateNigeria Bota.y Depa.tment Institute for Costal and Marine ResearchNelson Mandela UniversityPort Elizabeth 6031South Africa Ja.io Environmenta. Limited 3 Airoboyi EstatesKM 2RefineryRefinery RoadEffurunDelta StateNigeria Depa.tment of a.a.omy Faculty of Basic Medical SciencesBaze UniversityPlot 686Cadastral Zone C 00Jabi Airport Road Bypass(Ring Road)Behind National Judicial InstituteAbujaNigeria

Ba.kground:Gossypium herba.eum(***),a.pla.t commonly found in the wild in Nigeria.is sa.d to possess some thera.eutic ***,there is a.dea.th of informa.ion on its chemica. ***,there is a.need to investiga.e its thera.eutic ***:To investiga.e the qua.ita.ive a.d qua.tita.ive phytochemica. components of the lea. extra.ts of ***,a. well a. its a.tioxida.t,a.tima.a.ia. a.d cytotoxic ***:Ga. chroma.ogra.hy-ma.s spectrometry(GC-MS)a.a.ysis wa. used to determine the components of etha.ol a.d hexa.e extra.ts of *** lea. while 2,2-diphenyl-1-picrylhydra.yl(DPPH)a.d nitric oxide a.sa.s were used to determine the a.tioxida.t *** pa.a.ites via.ility wa. exa.ined using pa.a.ite la.ta.e dehydrogena.e(pLDH)technique a.d HeLa.cell wa. used for the cytotoxicity ***:Bioa.tive compounds identified in etha.ol a.d hexa.e extra.ts of *** were 37 a.d 30 kinds,respectively,with ma.or components a. linoleic a.id(36.10%a.d 33.82%),vita.in E(7.15%a.d 5.98%)a.d ca.yophyllene(4.21%a.d 5.08%).It a.so ha. ta.nins,sa.onins,a.ka.oids,fla.onoids steroids,phenols a.d *** a.tiba.teria. test,significa.t inhibitory potentia.s a.a.nst multidrug-resista.t ba.teria.stra.ns were *** vitro a.tioxida.t potentia.s(IC 50)of etha.ol a.d hexa.e extra.ts were 3.33 a.d 4.12μg/mL for DPPH a.sa.s,a.d 3.87 a.d 5.00μg/mL for nitric oxide a.sa.s,*** a.tivities(IC 50)were 9.99 a.d 9.76μg/mL for etha.ol a.d hexa.e extra.ts,***:*** lea. ma. provide novel pla.t-derived thera.eutic a.ents,effective in trea.ing infectious disea.es a.ising from multiple drug-resista.t ba.teria.a.d a.ta.get in the ma.a.ement of oxida.ive stress.

关键词： a.tima.a.ia. a.timicrobia. a.tioxida.t Bioa.tive components MBC MBF GC-MS Gossypium herba.eum

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