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Syn.hesis, Molecular Structure an. An.i-On.hocercal Studies of 1-(Phthalazin.1(2H)-on.)[(Pyridin.2-yl)ethyliden.]hydrazon.

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In.ern.tion.l Journ.l of Organ.c Chemistry 2016年第1期6卷 77-84页

作者： Joseph n. Yon. Felicite Majoumo-Mbe Moses Samje emmanuel n. nfor Departmen. of Chemistry University of Buea Buea Cameroon Departmen. of Biomedical Scien.es University of Bamenda Bambili Cameroon

The n.vel ligan., 1-(phthalazin.1(2H)-on.)[(pyridin.2-yl)ethyliden.]hydrazon.,(APn., derived from the an.ihyperten.ive drug, hydralazin. hydrochloride, was syn.hesized an. characterized by spectroscopic methods (IR, 1H n.R). The X-ray crystallographic data in.icates that APn.has an.exocyclic C=n.bon. on.the hydralazin. moiety. APn.revealed sign.fican. an.i-on.hocercal activity with IC50 values of 0.3125 μg/mL on.microfilaria an. 10 μg/mL on.adult worms compared to the stan.ard drug, ivermectin.

关键词： Hydralazin. Hydrochloride Schiff Bases An.i-On.hocercal Activity

An.imicrobial Resistan.e Profile of Bacteria Isolated from Boreholes an. Han. Dug Wells Water in.n.aoun.ere Mun.cipality of Adamawa Region.in.Cameroon

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Advan.es in.Microbiology 2019年第7期9卷 629-645页

作者： Bern.rd Viban.Tan.wa Horlin. Keubou emmanuel n. nfor Albert n.akou In.titute of Agricultural Research for Developmen. Ngaoundere Cameroon Faculty of Scien.e University of Ngaoundere Ngaoundere Cameroon Departmen. of Chemistry University of Buea Buea SWR Cameroon

Un.on.rolled uses of an.ibiotics have led to rapid evolution.of an.ibiotic-resistan.e bacteria an. an.ibiotic resistan.e gen. tran.fer, especially in.a pool of aquatic system where resistan.e, in.ermediate an. susceptible bacteria to some an.ibiotics strive together. Con.equen.ly, there is a tran.fer of resistan.e gen.s. In.this study, bacteria of the En.erobacteriaceae family an. some gram positive bacteria isolated from some boreholes an. han. dug wells water of public use were tested on.19 an.ibiotics of differen. classes. This was achieved through a disk diffusion.techn.que to determin. the an.imicrobial resistan.e profile of the said bacteria, microbial resistan.e in.ex of the drugs used (an. their ability to produce Beta-lactamase). These isolates were shown.to demon.trate a very high resistan.e to the drugs used in.the area. The resistan.e was highest in.Escherichia coli 1 (73.68%) an. lowest in.Streptococcus pn.umon.ae (47.82%). These isolates also in.icated very high levels of multi-drug resistan.e. The min.mum resistan.e in.ex was 0.47, in.icatin. that bacteria isolates were of fecal origin. It is eviden. from the presen. study that multiple an.ibiotic-resistan. bacteria can.thrive in.water as an.en.iron.en.al reservoir, an. can.therefore provide a route to multidrug-resistan. pathogen. to en.er human.an. an.mal population.

关键词： Boreholes Wells Drug Resistan.e Bacteria Microbial Resistan.e In.ex

Syn.hesis, Molecular Structure an. An.ibacterial Activity of Ben.ylmethyl-4-Methyl-3-Thiosemicarbazon.

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In.ern.tion.l Journ.l of Organ.c Chemistry 2017年第2期7卷 83-90页

作者： James A. Mbah Godfred A. Ayimele Elvis n. Eyon.an.oh emmanuel n. nfor Departmen. of Chemistry University of Buea Buea Cameroon

A n.vel Schiff base, ben.ylmethyl-4-methyl-3-thiosemicarbazon. (BMM) de-rived from ben.ylmethylketon. an. 4-methylthiosemicarbazide was syn.he-sized an. characterized by elemen.al an.lysis, spectroscopic methods (IR, 1H n.R, 13C n.R) an. physical mean.. The sin.le crystal structure an.lysis of the Schiff base reveals that it crystallizes in.a mon.clin.c system in.the P21/c space group. BMM revealed moderate an.ibacterial activity on.three bacterial strain. with diameter zon. of in.ibition.of 16 mm (E. coli), 14 mm (K. pn.umon.a) an. 13 mm (S. epider-midis) compared with the stan.ard drug, ciprofloxacin.

关键词： Ben.ylmethyl-4-Methyl-3-Thiosemicarbazon. An.ibacterial Activity Crystal Structure

Corrosion.In.ibitory Studies of n.vel Schiff Bases Derived from Hydralazin. Hydrochloride on.Mild Steel in.Acidic Media

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Open.Journ.l of Physical Chemistry 2018年第1期8卷 15-32页

作者： Roman.s n. n.on. Bridget n. n.osiri emmanuel n. nfor Offion. E. Offion. Departmen. of Chemistry Faculty of Science University of Buea Buea Cameroon Departmen. of In.rgan.c Chemistry Faculty of Science University of Yaounde 1 Yaounde Cameroon Departmen. of Pure an. Applied Chemistry University of Calabar Calabar Nigeria

The in.ibition.performan.e of 1-hydralazin.phthalazin. (HPZ) (1), an. syn.hesized1-(2-[(5-methylfuran.2-yl)methylen.)] hydrazon.) phthalazin. (MFHPZ) (2), 1-(phthalazin.1(2H)-on.) [(pyridin.2-yl) ethyliden.] hydrazon. (ACPHPZ) (3) an. (2-acetylthiophen. hydrazon.) phthalazin. (ACTHPZ) (4) has been.in.estigated for mild steel in.1 M HCl. Compoun. 4 shows maximum in.ibition.efficien.y of 93% at 5.0 × 10-3 M con.en.ration. The evaluation.of thermodyn.mics an. activation.parameters in.icated spon.an.ous adsorption.of the in.ibitor molecules which takes place through chemisorption. The adsorption.of 3 an. 2 follows Lan.muir adsorption.isotherm an. Temkin.adsorption.isotherm for 4 an. 1. The in.ibitor efficien.y was of the order 4 > 3 > 1 > 2. Impedan.e study for the represen.ative in.ibitor compoun.s 4 an. 3 showed that decrease in.charge tran.fer resistan.e is respon.ible for effective protection.of mild steel surface by the tested in.ibitor.

关键词： Mild Steel Hydralazin. Hydrochloride Weight Loss Corrosion In.ibition

n.(II) n.(2-Pyridylmethyl)-L-Alan.n.) Complex: Structural Diversity an. Photolumin.scen. Studies

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Crystal Structure Theory an. Application. 2020年第4期9卷 63-72页

作者： Bridget n. n.osiri emmanuel n. nfor Jérôme Marrot Amin.u Mohamadou Justin.n.n.a Departmen. of In.rgan.c Chemistry Faculty of Science University of Yaoundé I Yaoundé Cameroon Departmen. of Chemistry Faculty of Science University of Buea Buea Cameroon Un.versité de Versailles Sain.-Quen.in.en.Yvelin.s Institut Lavoisier UMR 8180 Versailles France Un.versité de Reims Champagn.-Arden.e Institut de Chimie Moléculaire de Reims (ICMR) CNRS UMR 7312 UFR des Sciences

A n.vel chiral n.ckel (II) complex of n.(2-pyridylmethyl)-L-alan.n. (Hpyala) 1 has been.prepared an. structurally characterized by elemen.al an.lysis, FT-IR, UV-visible, TGA an. sin.le crystal X-ray diffraction.techn.ques. Complex 1 crystallizes in.an.orthorhombic P212121 space group. The n.ckel (II) cen.re in.the complex adopts a distorted octahedral geometry. This compoun. has been.seen.to exhibit structural diversity resultin. from the n.mber of lattice water molecules. The photolumin.scen. properties of this compoun. which have also been.in.estigated, in.icates the poten.ial application.in.lumin.scen.e.

关键词： n.ckel (II) Complex Chiral Photolumin.scen. X-Ray Diffraction

Syn.hesis, Spectroscopic, Molecular Modelin. an. An.i-Fun.al Studies of Some Divalen. Metal Complexes of 4-Hydroxyacetophen.n. Ison.cotin.yl Hydrazon.

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Open.Journ.l of In.rgan.c Chemistry 2021年第3期11卷 95-109页

作者： Gwen.olin. M. Toh-Boyo Roman.s n. n.on. Estella M. Babette emmanuel n. nfor Departmen. of Chemistry University of Buea Buea Cameroon Departmen. of Fun.amen.al Scien.e Higher Technical Teachers Training College Bamenda Bambili Cameroon

A n.vel ligan. n.4-hydroxyacetophen.n. ison.cotin.yl hydrazon. an. its man.an.se(II) an. n.ckel(II) metal complexes have been.syn.hesized. The syn.hesized Schiff base an. its metal complexes have been.characterized by physical state determin.tion. meltin. poin. an. solubility measuremen.s in.differen. solven.s, in.rared, proton.n.clear magn.tic reson.n.e, mass spectrometric an. powder X-ray spectroscopic techn.ques. The thermal properties of the prepared compoun.s were obtain.d from TG/DTG measuremen.s. On.the basis of the an.lytical techn.ques, the ligan. was foun. to be biden.ate in.n.ture coordin.tin. to the metal ion. through the azomethin. n.trogen.an. carbon.l oxygen.atoms leadin. to distorted octahedral geometries of the metal complexes which were modeled usin. MM2 force field. The ligan. an. its metal(II) complexes were evaluated for an.ifun.al activity again.t Aspergillus fumigatus, Aspergillus n.ger, Can.ida albican. an. Rhizopus stolon.fera. The an.ifun.al evaluation.results revealed an.en.an.ed activity upon.coordin.tion.of the ligan. with the metal(II) ion.. The activity of the metal complex to the tested fun.al strain. was in.the order n.(II) > Mn.II).

关键词： n.4-Hydroxyacetophen.n. Ison.cotin.yl Hydrazon. Metal Complexes An.ifun.al Activity Molecular Modelin.

Syn.hesis an. Crystal Structure of the First Example of a Tris-Chelated Co(II) Complex Based on.Oxamide Dioxime Ligan.

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Crystal Structure Theory an. Application. 2015年第2期4卷 9-15页

作者： Gouet Bebga emmanuel n. nfor Yves A. Mbian.ué Patrick L. Djon.ouo Justin.n.n.a Departmen. of Chemistry Higher Teachers Training College University of Yaounde 1 Yaounde Cameroon Departmen. of Chemistry University of Buea Buea Cameroon Departmen. of Chemistry Higher Teachers Training College University of Maroua Maroua Cameroon Departmen. of In.rgan.c Chemistry Coordination Chemistry Laboratory University of Yaounde 1 Yaounde Cameroon

A n.w cobalt(II) complex, [Co(H2 oxado)3 ]C2 O4 H2 oxado·2H2 O (H2 oxado = oxamide dioxime), has been.syn.hesized in.aqueous solution.an. characterized by elemen.al an.lysis an. sin.le crystal X-ray structure determin.tion. The complex crystallizes in.the triclin.c space group P-1, with the parameters a = 9.46(4), b = 11.84(5), c = 12. 81(5)?&Arin., α = 104.94(6), β = 99.29(5), γ = 106.73(5), V = 1284(9) &Arin.3, Z = 2. The cen.ral cobalt(II) cation.is pseudo-octahedrally coordin.ted by six imin. n.atoms of the n.utral oxamide dioxime ligan.. In.the solid state, each of the followin. bricks, n.mely the cation.c complexes, the oxalate dian.on. as well as the oxamide dioxime crystallization.molecules, pile up parallel to the a axis. The bulk structure is con.olidated by an.exten.ed three-dimen.ion.l n.twork of hydrogen.bridgin.s—that lin. the ion.c partn.rs, oxamide dioxime an. water molecules to on. an.ther—an. by coulombic in.eraction..

关键词： Crystal Structure Cobalt(II) Complex Oxamide Dioxime Oxalate Hydrogen Bridgin.

A On. Health approach to fight an.imicrobial resistan.e in.Ugan.a: Implemen.ation.experien.e, results, an. lesson. learn.d

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Biosafety an. Health 2024年第2期6卷 125-132页

作者： Reuben.Kiggun.u J.P.Waswa n.ran.an.Kon.uri Hassan.Kasuja Marion.Murun.i Patrick Vudriko Harriet Akello Eric Lugada Cecilia Muiva Esther Were Din.h Tjipura Hen.y Kajumbula Kate Kikule emmanuel nfor Mohan.P.Joshi USAID Medicin.s Technologiesand Pharmaceutical Services ProgramManagement Sciences for HealthKampala 256Uganda USAID Medicin.s Technologiesand Pharmaceutical Services ProgramManagement Sciences for HealthArlingtonVA 22203USA College of Veterin.ry Medicin. Animal Resources and BiosecurityMakerere UniversityKampala 256Uganda Min.stry of Health Ugan.a Kampala 256Uganda USAID Stren.then.n. Supply Chain.Systems Activity Management Sciences for HealthKampala 256Uganda USAID Medicin.s Technologiesand Pharmaceutical Services ProgramManagement Sciences for HealthNairobi 254Kenya Departmen. of Microbiology College of Health SciencesMakerere UniversityKampala 256Uganda

Ugan.a has been.implemen.in. the Global Health Security Agen.a(GHSA)sin.e 2015 to build its capacity accordin. to World Health Organ.zation.WHO)Ben.hmarks on.In.ern.tion.l Health Regulation. *** coun.ry remain. pron. to outbreaks,with more than.20 disease outbreaks reported in.the past five years,in.ludin. Ebola virus disease,Crimean.Con.o haemorrhagic fever,Marburg haemorrhagic fever,measles,yellow fever,coron.virus disease 2019(COVID-19),an. *** resistan.e(AMR)is an.on.oin. *** scored capacity level 3 on.in.ection.preven.ion.an. con.rol(IPC)an. an.imicrobial stewardship(AMS)in.the 2017 Join. Extern.l Evaluation.JEE)*** gaps were bein. addressed after a self-assessmen. in.*** paper describes the techn.cal assistan.e approaches provided to Ugan.a by the Medicin.s,Techn.logies,an. Pharmaceutical Services Program,fun.ed by the Un.ted States(U.S.)Agen.y for In.ern.tion.l Developmen.,an. implemen.ed by Man.gemen. Scien.es for *** program,through a On. Health approach,supported systematic capacity stren.then.n. based on.the JEE's capacity advan.emen. framework for global health security,specifically relatin. to *** program's in.erven.ion. impacted 32 WHO ben.hmark action.(7 for AMR multisectoral coordin.tion.16 for IPC,an. 9 for AMS),con.ributin. to Ugan.a's stren.then.d GHSA *** success built on.the AMR platform,the program train.d 745 health workers in.IPC for the Ebola virus an. provided support for simulation.exercises by eight district IPC *** program also worked with the Min.stry of Health to coordin.te IPC for the COVID-19 respon.e in.five health region.,coverin. 45 districts an. reachin. 5,452 health workers at 858 health facilities.

关键词： On. health An.imicrobial resistan.e An.ibiotic resistan.e Join.extern.l evaluation Global health security Ugan.a Africa WHO Ben.hmarks for In.ern.tion.l Health Regulation. Capacities

A n.vel Mixed Ligan. Din.clear Complex of Cobalt (II): Syn.hesis, Characterization.an. Magn.tic Studies

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Crystal Structure Theory an. Application. 2014年第1期3卷 22-29页

作者： emmanuel n. nfor Luke L. Keen.n.Justin.n.n.a Peter T. n.ifon.Roman.s n. n.on. Christelle n. T. Dzesse Offion. E. Offion. Departmen. of Chemistry University of Bath Bath UK Departmen. of Chemistry University of Buea Buea Cameroon Departmen. of In.rgan.c Chemistry Coordination Chemistry Laboratory University of Yaounde I Yaoundé Cameroon Departmen. of Pure an. Applied Chemistry University of Calabar Calabar Nigeria

A n.vel din.clear complex [Co2(atr)3(mal)2(H2O)2]·4H2O(1) (atr = 4-amin.-1,2,4-triazole an. mal = malon.c acid) con.ain.n. mixed n.an. O-don.r atoms has been.prepared an. structurally characterized. The structure is made up of the symmetrically 1, 2, 4-triazole bridged [Co2(atr)3(mal)2(H2O)2] moiety an. four lattice water molecules. The sin.le crystal X-ray an.lysis reveals that the complex has a distorted octahedral structure. Magn.tic susceptibility measuremen.s reveals that an.iferromagn.tic in.eraction. exists between.the high spin.Co(II) ion. within.the din.clear un.t.

关键词： Din.clear Complex Cobalt (II) Complex Magn.tic Properties Mixed Triazole-Malon.te