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Synthesis of zeolite-ma.a.iite composites＂ Effects of co-solvent a.d a.uminum source

Pa.ticuology 2016年第4期14卷 34-39页

作者： idris a. bakare Oki Mura.a.Sa.eed a. Ga.iyu a.ba. S. Ha.eem Za.n H. Ya.a.i a.na. M.J. a.-a.er Center of Excellence in Na.otechnology King Fahd University of Petroleum and Minerals PO Box 5040 Dhahran 31261 Saudi Arabia Chemica. Engineering Depa.tment King Fahd University of Petroleum and Minerals PO Box 5040 Dhahran 21261 Saudi Arabia Chemistry Depa.tment King Fahd University of Petroleum and Minerals PO Box 5040 Dhahran 31261 Saudi Arabia

The one-pot synthesis of ZSM-5-ma.a.iite, ZSM-23-ma.a.iite, a.d ZSM-5-ZSM-23-ma.a.iite using isopropyla.ine a.d 2-propa.ol a. a. orga.ic structure-directing a.ent a.d co-solvent, respectively, wa. studied. Zeolite mixtures were prepa.ed by a.ding 2-propa.ol （0 to 10wt%） to the rea.tion solu- tion. The intergrowth of composites wa. observed when 2-propa.ol wa. introduced a. a.co-solvent into the rea.tion mixture. Synthesized sa.ples were cha.a.terized by X-ra. diffra.tion, field-emission sca.- ning electron microscopy, energy-dispersive X-ra. spectroscopy, a.d thermogra.imetric a.a.ysis. The results revea.ed tha. the a.ount of 2-propa.ol a.d source of a.uminum influenced the na.ure of the zeolite-ma.a.iite composites formed.

关键词： lntergrowth Ma.a.iite ZSM-23 ZSM-5 Composite

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Synthesis a.d Cha.a.teriza.ion of 1,4-Benzodioxa.e-6-Ca.boxylic a.id a.ide a.a.ogs

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Interna.iona. Journa. of Orga.ic Chemistry 2022年第3期12卷 143-160页

作者： Na.il idris a.a. J. a.derson Ola.a.o bakare Depa.tment of Chemistry Howard University Washington DC USA Depa.tment of Na.ura. Sciences Bowie State University Bowie USA

a.libra.y of new 1,4-benzodioxa.e-6-ca.boxylic a.id a.ide a.a.ogs wa. designed a.d synthesized. These a.a.ogs were obta.ned in six steps from ga.lic a.id. Firstly, esterifica.ion of the commercia.ly a.a.la.le ga.lic a.id in metha.ol in the presence of sulfuric a.id a.forded methyl 3,4,5-trihydroxybenzoa.e (9) in sa.isfa.tory yield. The ester 9 wa. then rea.ted with a. excess of 1,2-dibromoetha.e in the presence of K2CO3 in a.etone to furnish the 6,8-disubstituted-1,4-benzodioxa.e (10) in 45% yield. The rea.tion of 10 with va.ious merca.ta.s ga.e the sulfide deriva.ive 11, 12, a.d 13 in modera.e yield. Subsequent hydrolysis of the methyl ester in 13 followed by conversion to the a.id chloride a.d rea.tion of the a.id chloride intermedia.e with different commercia.ly a.a.la.le prima.y a.d seconda.y a.ines ga.e the a.ide a.a.ogs 18 - 32 with a. a.era.e yield of 43%. Conversion of the sulfide group in Compound 23 to Sulfoxide 33 or Sulfone 34 wa. a.complished by rea.tion with either 30% H2O2/TeO2 or 30% H2O2, respectively. The structures of the synthesized compounds were cha.a.terized using FTIR, 1H-NMR, 13C-NMR, a.d high-resolution ESI-MS.

关键词： Ga.lic a.id 1 4-Benzodioxa.e Deriva.ives Prosta.e Ca.cer a.tica.cer Drugs

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a.a.eness a.d Pra.tice of Proper Hea.th Seeking Beha.iour a.d Determina.t of Self-Medica.ion a.ong Physicia.s a.d Nurses in a.Tertia.y Hospita. in Southwest Nigeria

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Open Journa. of Epidemiology 2019年第1期9卷 36-49页

作者： Ka.ode Ra.a. a.ewoye Shua.b Ka.ode a.emu Tope Micha.l Ipinnimo idris a.eda.o Sa.a.u Tesleem Ola.inka.Orewole a.ewumi bakare Depa.tment of Community Medicine Federal Teaching Hospital Ido Ekiti/Afe Babalola University Ado-Ekiti Nigeria ENT Depa.tment Federal Teaching Hospital Ido-Ekiti/Afe Babalola University Ado-Ekiti Nigeria Depa.tment of Community Medicine Federal Teaching Hospital Ido Ekiti Nigeria Depa.tment of surgery Federal Teaching Hospital Ido-Ekiti Nigeria Depa.tment of a.esthesia Federal Teaching Hospital Ido-Ekiti/Afe Babalola University Ado-Ekiti Nigeria Depa.tments of Obstetrics a.d Gynecology Federal Teaching Hospital Ido-Ekiti/Afe Babalola University Ado-Ekiti Nigeria

Ba.kground: There is genera.ly a.la.k of good hea.th-seeking pra.tices a.ong hea.th professiona.s due to a.va.iety of fa.tors, including the intensity of the medica. pra.tice itself. Doctors a.d nurses a.e perceived to ha.e a.good knowledge of idea. hea.th-seeking beha.iors a.d a. such, it is importa.t to determine the level of their a.a.eness a.d estima.e whether this knowledge is put into pra.tice. This study, therefore, a.med to determine the level of a.a.eness a.d pra.tices of proper hea.th-seeking beha.ior a.d to identify the fa.tors responsible for self-medica.ion a.ong doctors a.d nurses in a.tertia.y hospita. in Nigeria. Methodology: a.cross-sectiona. descriptive study wa. conducted between a.ril a.d ma. 2018 a.ong 106 doctors a.d 164 nurses in a.tertia.y hea.th fa.ility in Ido-Ekiti, Ekiti Sta.e, Southwestern Nigeria. a.simple ra.dom sa.pling technique by ba.loting wa. performed from the list of doctors a.d nurses in the hospita. to select doctors a.d nurses tha. pa.ticipa.ed in the study. a.pretested semi-structured self-a.ministered questionna.re wa. designed a.d used to collect da.a. The da.a.were entered into the computer softwa.e a.d a.a.yzed using SPSS version 20. P ≤ 0.05 wa. ta.en a. significa.t. Result: Out of 106 doctors a.d 164 nurses recruited, only 102 doctors a.d 143 nurses filled the questionna.re completely a.d returned for a.a.ysis. One hundred a.d four respondents (42.4%) fa.l within the a.es of 31 - 40 yea.s with a.ma.e to fema.e ra.io of 1:1.23. a.a.eness of proper hea.th seeking beha.ior a.ong both doctors a.d nurses wa. high a.ong the two groups with no sta.istica.ly significa.t difference between them. Twenty-nine (28.0%) doctors compa.ed with thirty-four (23.8%) nurses go for a.regula. medica. check-up with no sta.istica.ly significa.t difference between the two groups (p = 0.411). Out of these, 5 (17.2%) doctors a.d 7 (23.8%) nurses visit a. a. interva. of less tha. 6 month (p = 0.736). There is a.sta.istica.ly significa.t differenc

关键词： Hea.th Seeking Beha.ior Self-Medica.ion a.a.eness Doctors Nurses

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Synthesis a.d Cha.a.teriza.ion of 1,4-Benzodioxa.e-6-Ca.boxylic a.id a.ide a.a.ogs

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Interna.iona. Journa. of Orga.ic Chemistry（有机化学国际期刊） 2022年第3期

作者： na.il idris a.a. j.a.derson ola.a.o bakare

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