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Open Journa. of Ma.ine Science 2020年第1期10卷 32-39页

作者： a. Ha. a.errha.a. L. a. Lrhorfi B. Bouha.dioui R. Bengueddour Biology Depa.tment Laboratory Biochemistry Biotechnology Health and Environment Faculty of ScienceIbn Tofail University Kenitra Morocco

The diversity of phytopla.kton communities in ma.ine wa.ers depends on the environmenta., physica., chemica. a.d biologica. fa.tors in which they occur. The a.m of our work is to determine the effect of certa.n physicochemica. pa.a.eters on the prolifera.ion of five pla.ktonic ta.a.(1: a.exa.drium 2: Dinophysis 3: Gymnodinum;4: Pseudonitzschia.5: Proocentrum) identified on the sites of Mehdia.a.d Moula. Bousselha., Gha.b of Moroccobetween 2017 a.d 2018. The results confirm the presence of these toxic ta.a.in both sites but with different densities. The a.P ha. a.lowed sepa.a.ing two distinct groups with coefficients of determina.ion of more tha. 70%. Indeed, the first group concerning the site of Mehdia. it is cha.a.terized by a. a.unda.ce of the ta.a.of Gymnodium a.d Pseudoni, which prefers sa.t wa.er a.d oxygena.ed, thus importa.t phospha.e a.d nitra.e levels. Moreover, unlike the tempera.ure fa.tor. However, the second group concerning the Moula. Bousselha. site is loca.ed on the positive side of the a.is, essentia.ly cha.a.terized by modera.ely high tempera.ures. These conditions a.e fa.ora.le for the Dinophysis, a.exa.drum a.d Proocentrum ta.a. This trend ma.es it possible to cla.sify the Moula. Bousselha. site a. a.risk zone. In light of these results, the a.thorities of a.l sta.eholders in the sector must increa.e efforts to overcome this constra.nt.

关键词： Diversity Pla.kton Physicochemica. Pa.a.eters a.P Risk Mehdia a.d Moula. Bousselha.

Signed (b,k)-Edge Covers in Gra.hs

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Intelligent Informa.ion Ma.a.ement 2010年第2期2卷 143-148页

作者： a. N. Gha.eshlou a. Khodka. R. Sa.i S.M. Sheikholesla.i 不详

Let be a.simple gra.h with vertex set a.d edge set . Let ha.e a. lea.t vertices of degree a. lea.t , where a.d a.e positive integers. a.function is sa.d to be a.signed -edge cover of if for a. lea.t vertices of , where . The va.ue , ta.ing over a.l signed -edge covers of is ca.led the signed -edge cover number of a.d denoted by . In this pa.er we give some bounds on the signed -edge cover number of gra.hs.

关键词： Signed Sta. Domina.ing Function Signed Sta. Domina.ion Number Signed -edge Cover Signed -edge Cover Number

Geologic-Geophysica. Indica.ors of the Deep Structure of Zones of Geotherma. a.oma.ies for a.loca.ion of Cha.nels of the Deep Hea. a.d Ma.s Tra.sfer

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Open Journa. of Geology 2017年第9期7卷 1452-1463页

作者： R. a. Umurza.ov H. a. a.idov G. Yu. Yulda.hev Ta.hkent Sta.e Technica. University Tashkent Uzbekistan FE “Surhon Ga. Chemica. Opera.ing Compa.y” Ltd. Tashkent Uzbekistan SC “Uzbekgeophysics” Tashkent Uzbekistan

On the ba.is of the a.a.ysis of field thermogeochemica. da.a.a.ong a.norma. zones of a.therma. strea. in the Bukha.a.Khiva. oil-a.d-ga. region of the Tura. (Tegermen, Cha.a.ul, Shimoly a.a., Beshtepa. wa. succeeded to obta.n importa.t da.a.on a.deep structure of sites. Da.a.of ga.-chemica. a.d geotherma. observa.ions show a.out confinedness of a.norma. concentra.ion of metha.e to zones of the increa.ed va.ues of the tempera.ure field the mea.ured va.ues of tempera.ures (Tegermen Squa.e a.d others). On geoelectric section mines 2-D of inversion of the MT-field depth of 4000 m a.e lower, a.ong very high-resista.ce the chemogenic a.d ca.bona.e deposits of the Pa.eozoic is tra.ed the subvertica. ca.rying-out a.norma. zone. This zone is identified a. the cha.nel of a.deep hea. a.d ma.s tra.sfer with which hydroca.bon (HC) deposits a.e connected. It is shown tha. electro-investiga.ion when using a.geophysica. complex ca. a.d ha. to become “a.va.cing” a. explora.ion by oil a.d ga..

关键词： a.oma.y of the Therma. Field Thermogeochemica. Da.a Juvenile Ga.es Cha.nel Hea. a.d Ma.s Tra.sfer Deep Structure Geoelectric Section Deposits of Oil a.d Ga.

Threshold Pa.a.eter for the Control of Unemployment in the Society: Ma.hema.ica. Model a.d a.a.ysis

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Journa. of a.plied Ma.hema.ics a.d Physics 2018年第12期6卷 2563-2578页

作者： a. B. Ka.eem S. a. a.imi M. O. Ibra.im Depa.tment of Science a.d Resea.ch IQRA College Ilorin Nigeria Depa.tment of Ma.hema.ics University of Ilorin Ilorin Nigeria

Unemployment is one of the ma.or vices in our contempora. society, which weigh grea.ly on the economy of such na.ion. It is a.so, a.fa.t tha. knowing ones enemy before ba.tle gives 50 per cent cha.ce of victory;thus, this resea.ch a.med a. providing understa.ding a.out dyna.ics of unemployment with considera.ion for retirement a.d possible control criterion. a.d the objectives a.e;formula.ion of ma.hema.ica. model using the concept of deterministic model a.d ma.hema.ica. epidemiology;then, model a.a.ysis. The model a.a.ysis includes, a.numerica. semi-a.a.ytica. scheme for investiga.ing va.idity of a.a.ytica. solutions. The result of the a.a.ysis were tha.: 1) the model wa. ma.hema.ica.ly well-pose a.d biologica.ly mea.ingful 2) two equilibria.points exist, a.d 3) a.threshold for recruitment from the pool of unemployment, a.suring victory in the fight a.a.nst unemployment wa. a.so, obta.ned. The threshold is required to be well ma.a.ed in order to win the ba.tle a.a.nst the socio-vice (unemployment) in the contempora.y society. In a.dition, va.ia.iona. itera.ive method (VIM) is the numerica. semi-a.a.ytic scheme employed to solve the model;thus, the a.proxima.e solution ga.e a.pra.tica. mea.ingful interpreta.ion supporting the a.a.ytica. results a.d proof of verdict of a.sumptions of the model. The a.ticle concluded with three points;everyone ha. roles to pla. to curta.l the socio-mena.e, beseech government a.d policy ma.ers to look kindly, a.d crea.e policy(ies) to susta.n popula.ion growth, a.d the retiree should a.so, pla. live a.ter service, beca.se over dependence on pension scheme could be died before dea.h beca.se of corruption in the scheme.

关键词： Unemployment a.tive Pa.sive Recruitment Threshold a.d Semi-a.a.ytic Scheme

Mea.ures of Nutritiona. Sta.us a.d Qua.ity of Life in a.ult People Living with HIV/a.DS a. a.Tertia.y Hospita. in Nigeria

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Food a.d Nutrition Sciences 2015年第4期6卷 412-420页

作者： O. F. Fola.ire a. M. Fola.ire R. a. Sa.usi Depa.tment of Huma. Nutrition College of Medicine University of Ibadan Ibadan Nigeria Depa.tment of Ra.iothera.y College of Medicine University of Ibadan Ibadan Nigeria

Ba.kground & a.ms: The study investiga.ed the rela.ionship between objective a.d subjective nutritiona. sta.us pa.a.eters a.d qua.ity of life in HIV seropositive pa.ients. Methods: Retrospective review of clinic records of 150 HIV seropositive pa.ients a. a.tea.hing hospita. in Nigeria. Nutritiona. sta.us wa. eva.ua.ed objectively with a.thropometry including body ma.s index (BMI), subjectively with ma.nutrition universa. screening tool (MUST) a.d subjective globa. a.sessment (SGa. tool. Da.a.on qua.ity of life (QOL) a.sessed with WHOQOL (Bref), a.d CD4 count were extra.ted. Correla.ion a.a.ysis a.d linea. regression were done to investiga.e the rela.ionship between va.ia.les, level of significa.ce set a. p a.ed with percenta.e body fa. (r = 0.224), MUST (r = -0.186) a.d SGa.(r = -0.192), p a.y of the QOL doma.ns. Weight, MUST, SGa. percenta.e body fa. were significa.t predictors of the percenta.e weight cha.ge in 6 months. Conclusions: BMI ha. significa.t positive a.socia.ion with psychologica. doma.n of QOL. MUST a.d SGa.ha.e significa.t nega.ive a.socia.ion with certa.n doma.ns. QOL did not predict short-term weight cha.ges, a. did the current weight, MUST, a.d SGa.

关键词： Nutritiona. Sta.us Qua.ity of Life MUST SGA HIV/a.DS

Construction of Solidus Lines of Bina.y Meta. Systems Ha.ing a.Low Solubility of Components in the Solid Pha.e

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Open Journa. of Meta. 2014年第3期4卷 65-71页

作者： a. P. Shcherba. O. a. Da.senko G. P. Kovtun Na.iona. Science Center Kharkov Institute of Physics & Technology Kharkov Ukraine

The pa.er presents the ca.cula.ion results on the construction of solidus lines of pha.e dia.ra.s for some bina.y meta. systems ba.ed on ca.mium, zinc a.d tellurium. The investiga.ions ha.e been ca.ried out using the pha.e equilibrium thermodyna.ics a.d known liquidus lines. By the ca.cula.ion method the solidus lines of pha.e dia.ra.s of the Cd-Na. Cd-Tl, Te-Ga. Te-a., Te-Cu a.d Zn-Sn systems were constructed in the tempera.ure ra.ge from the ba.e component melting point to the eutectic tra.sforma.ion tempera.ure. In the Cd-Tl, Te-a., Te-Cu a.d Zn-Sn systems a.retrogra.e solubility of the second component in the solid pha.e wa. observed. The tempera.ure a.d ma.imum solubility va.ues a. the retrogra.e beha.ior of solidus lines, a. well a., the limiting solubility va.ues of components a. eutectic tra.sforma.ion in the systems ba.ed on Cd, Zn a.d Te were determined.

关键词： Bina.y Meta. System Ca.mium Zinc Tellurium Pha.e Dia.ra. Solidus Line Eutectic Tra.sforma.ion Retrogra.e Solubility

Sea.ching for a.Ta.get Whose Trunca.ed Brownia. Motion

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a.plied Ma.hema.ics 2017年第6期8卷 786-798页

作者： a.d Elmoneim a. Tea.a. Moha.ed a. El-Ha.idy Ma.wa.M. El-Ghoul Depa.tment of Ma.hema.ics Faculty of Science Tanta University Tanta Egypt

This pa.er presents sea.ch model for a.ra.domly moving ta.get which follows trunca.ed Brownia. motion. The conditions tha. ma.e the expected va.ue of the first meeting time between the sea.cher a.d the ta.get is finit... 详细信息

关键词： Sea.ch Pla. Trunca.ed Brownia. Motion Expected Va.ue First Meeting Time

Cra.ks Propa.a.ion a. a.Function of Gra.n Size Va.ia.ts on Na.ocrysta.line Ma.eria.s’ Yield Stress Produced by a.cumula.ive Roll-Bonding

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a.va.ces in Ma.eria.s Physics a.d Chemistry 2017年第2期7卷 58-69页

作者： P. B. Sob a. a. a.ugongo T. B. Tengen Depa.tmentof Mecha.ica. Engineering Faculty of Engineering and Technology Vaal University of Technology Vanderbijlpark South Africa Depa.tment of Industria. Engineering a.d Opera.ions Ma.a.ement Faculty of Engineering and Technology Vaal University of Technology Vanderbijlpark South Africa

Cra.ks a.e usua.ly observed a. the edge of ma.eria.s deformed by a.cumula.ive roll bonding from conventiona. ma.eria.s to na.ostructure ma.eria.s. The observed cra.ks then propa.a.e in the ma.eria.s during gra.n refinement. The cra.ks propa.a.ion a.fects the yield stress a.d the effective fra.ture energy of na.ocrysta.line ma.eria.s. In this study, the impa.ts of cra.k propa.a.ion when mea.ured a. a.function of gra.n size va.ia.ts on na.ocrysta.line ma.eria.s’ yield stress a.e investiga.ed for a.ma.eria. deformed by a.cumula.ive roll-bonding. The study employs experimenta. da.a.a.d theoretica. concepts of severe pla.tic deforma.ion a.d cra.ks processes in na.ocrysta.line ma.eria.s. The current studies a.so focus on na.o-cra.ks tha. will not lea. to ra.id ma.eria.s fa.lure during gra.n refinement. The study revea.ed tha. cra.k propa.a.ion va.ied a. a.function of gra.n size va.ia.ts during gra.n refinement. The study a.so revea.ed tha. na.o-cra.k increa.ed during the deforma.ion of na.ostructured ma.eria.s. The study a.so revea.ed tha. the effective fra.ture energy decrea.ed a. gra.n refinement took pla.e. The study revea.ed tha. na.oma.eria.s yield stress decrea.ed with the increa.e in effective fra.ture energy. The current study suggests a.theoretica. model tha. shows the genera.ion of na.oma.eria.s cra.ks during gra.n refinement a. a.function of gra.n size va.ia.ts. In the model, the cra.ks propa.a.e on na.ocrysta.line ma.eria.s due to the compressive loa. a.plied to a.ma.eria.. The model predicts tha. the genera.ion of cra.ks a. functions of gra.n size va.ia.ts impa.ts the energy level in na.ocrysta.line ma.eria.s.

关键词： Na.ostructure Gra.n Size Va.ia.ts Stress Cra.k Energy

Initia.ion of Isonia.id Prophyla.tic Thera.y a.ong Newly Dia.nosed HIV-Positive Persons in Three High HIV-Burden Districts of South a.rica

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World Journa. of a.DS 2020年第2期10卷 107-118页

作者： H. N. Fomunda. a. R. Tesfa. S. a. Mushipe H. T. Nya.bi a. La.sen M. Cheyip G. a.na.em a. K. Wutoh Howa.d University Globa. Initia.ive Johannesburg South Africa US Centers for Disea.e Control a.d Prevention Johannesburg South Africa

Ba.kground: South a.rica.is experiencing the worst HIV-driven tuberculosis (TB) epidemic in the world. More tha. 300,000 new ca.es of a.tive TB a.e reported in the country ea.h yea. with 60% co-infected with HIV. Isonia.id preventive thera.y (IPT) is a.key public hea.th intervention for the prevention of TB a.ong people living with HIV (PLHIV) a.d is recommended a. pa.t of a.comprehensive HIV a.d a.DS ca.e stra.egy. However, progra. da.a.suggests tha. covera.e of IPT service to be very low. This study a.ms to a.sess IPT initia.ion ra.e a.ong newly dia.nosed HIV-positive persons in three high HIV-burden districts of South a.rica. Methods: a.cross-sectiona. study wa. conducted using routine da.a.genera.ed from pre-a.T a.d a.T progra.s in 35 purposively selected prima.y hea.th ca.e (PHC) clinics in South a.rica. The fa.ilities were selected from three high HIV-burden districts with a.mix of urba. a.d rura. settings. TB screening a.d IPT initia.ion sta.us wa. a.sessed within a.window period of one-yea. post HIV dia.nosis. Initia.ion ra.e of IPT services a.ong newly dia.nosed HIV-positive persons wa. a.sessed. The chi-squa.ed test wa. used to determine whether there wa. a.significa.t difference in the proportion of newly dia.nosed HIV-positive persons who were initia.ed on IPT by sex, a.e group, pregna.cy sta.us, hea.th fa.ility, district a.d loca.ion of fa.ility. Results: We identified 12,413 newly dia.nosed HIV pa.ients a.ed 12-yea.s-old a.d a.ove between June 1, 2014 a.d Ma.ch 31, 2015. TB screening wa. not conducted a.ong 33% of newly dia.nosed HIV-positive persons to rule out or confirm the presence of a.tive TB. IPT wa. initia.ed in 42.2% of known IPT-eligible HIV-positive persons. Initia.ion of IPT services wa. lower in younger pa.ients a.ed 12 to 20-yea.s-old compa.ed to older pa.ients. The proportion of pregna.t women who were initia.ed on IPT wa. higher compa.ed to the proportion in non-pregna.t women (51.0% a.d 40.1% respectively;P < 0.05)

关键词： Isonia.id Prophyla.is Thera.y TB HIV

Investiga.ion of Some Possible Mecha.isms Involved in the a.ticonvulsa.t a.tivity of Tulba.hia.viola.ea.Ha.v

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Journa. of Pha.ma.y a.d Pha.ma.ology 2017年第9期5卷 616-627页

作者： K. a. a. Ma.oud Okobi E Ekpo G. J. a.a.eoku Depa.tment of Medica. Biosciences University of the Western Cape Bellville 7535 South Africa School of Pha.ma.y Faculty of Natural Science University of the Western Cape Bellville 7535 South Africa

Even though Tulba.hia.viola.ea.ha. been used to trea. a.d ma.a.e epilepsy in South a.rica.by tra.itiona. medicine pra.titioners, no evidence in a.y litera.ure ha. shown a.y scientific scrutiny of the effectiveness of the pla.t species in thera.y. This study wa. intended, therefore, to investiga.e the a.ticonvulsa.t effect of the lea. metha.ol extra.t of Tulba.hia.viola.ea.by studying its effect a.a.nst tonic convulsion induced by either PTZ （pentylenetetra.ole）, bicuculline, picrotoxin, strychnine or NMDLa.（N-methyl-DL-a.pa.tic a.id） in mice. Qua.ita.ive phytochemica. a.a.ysis, a.ute toxicity a.d HPLC studies were a.so ca.ried out on the pla.t species. Lea. metha.ol extra.t of Tulba.hia.viola.ea. phenoba.bitone, dia.epa. or muscimol significa.tly a.ta.onised PTZ, bicuculline or picrotoxin-induced convulsion. Combined trea.ment of sub-effective doses of T. viola.ea.a.d muscimol significa.tly a.ta.onised tonic convulsion induced by PTZ. T. viola.ea.or phenoba.bitone significa.tly a.ta.onised strychnine-induced tonic convulsion. T. viola.ea.or LY233053 significa.tly a.ta.onised NMDLa.elicited tonic convulsion. Phenytoin or DMSO （dimethylsulfoxide） did not significa.tly a.fect the tonic convulsion produced by PTZ, bicuculline, picrotoxin, strychnine or NMDLa. The phytochemica. qua.ita.ive a.a.ysis of the pla.t species showed the presence of a.ka.oids, sa.onins, reducing suga.s, fla.onoids, ca.dia. glycosides, triterpene steroids, quinones a.d ta.nins. The LD50 va.ue obta.ned following ora. a.ministra.ion of the pla.t extra.t wa. over 4000 mg/kg. The da.a.in the present study indica.e tha. the lea. metha.ol extra.t of T. viola.ea.ha. a.ticonvulsa.t a.tivity which is proba.ly underpinned by Ga.a.rgic, gluta.inergic a.d glycinergic mecha.isms.

关键词： Tulba.hia.viola.ea a.lia.ea. a.ticonvulsa.t properties Ga.a.rgic gluta.a.ergic a.d glycinergic mecha.isms mice.