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a.sessing the Va.ia.ility of Extreme Wea.her Events a.d Its Influence on Ma.ine a.cidents a.ong the Northern Coa.t of Ta.za.ia

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a.erica. Journa. of Clima.e Cha.ge 2024年第3期13卷 499-521页

作者： Fa.i a. a.i Kombo Ha.a. Ka. Sa.a.a.da.la.Kha.is Za.ziba. Office Tanzania Meteorlogical Authority (TMA) Zanzibar Tanzania Depa.tment of Na.ura. Science State University of Zanzibar (SUZA) Zanzibar Tanzania

The ma.ine a.cidents a.e a.ong the ma.n components of the Za.ziba. Disa.ter Ma.a.ement Policy (2011) a.d the Za.ziba. Blue Economy Policy (2020). These policies a.med to institute lega. fra.e works a.d procedures for reducing both the frequency of ma.ine a.cidents a.d their a.socia.ed fa.a.ities. These fa.a.ities include dea.hs, perma.ent disa.ilities a.d loss of properties which ma. result into increa.ed poverty levels a. per the susta.na.le development goa. one (SDG1) which stipula.es on ending the poverty in a.l its forms everywhere. Thus, in the wa. to support these Government efforts, the influence of clima.e a.d wea.her on ma.ine a.cidents a.ong Za.ziba. a.d Pemba.Cha.nels wa. investiga.ed. The study used the 10 yea.s (2013-2022) records of da.ly ra.nfa.l a.d hourly wind speed a.quired from Ta.za.ia.Meteorologica. a.thority (TMa. (for the observa.ion sta.ions of Za.ziba., Pemba. Da.es Sa.a.m a.d Ta.ga., a.d the significa.t wa.e heights da.a. which wa. freely downloa.ed from Globa.ly Foreca.ting System (GFS-World model of 13 km resolution). The ma.ine a.cident records were collected from Ta.a. a.d Za.ziba. Ma.itime a.thority (ZMa., a.d the a.ecdota. informa.ion wa. collected from hea.s of qua. a.d boa. ca.ta.ns in different a.ea. of Za.ziba.. The Ma.n Kenda. test, wa. used to determine the slopes a.d trends direction of used wea.her pa.a.eters, while the Pea.son correla.ions a.a.ysis a.d t-tests were used to understa.d the significa.ce of the underlying rela.ionship between the wea.her a.d ma.ine a.cidents. The pa.red t-test wa. used to eva.ua.e the extent to which wea.her pa.a.eters a.fect the ma.ine a.cidents. Results revea.ed tha. the va.ia.ility of extreme wea.her events (ra.nfa.l, ocea. wa.es a.d wind speed) wa. seen to be a.ong the key fa.tors for most of the recorded ma.ine a.cidents. For insta.ce, in Pemba.high ra.nfa.l showed a. increa.ing trend of extreme ra.nfa.l events, while Za.ziba. ha. shown a.decrea.ing trend of these events. a. for extreme wind

关键词： Ma.ine a.cidents Ba. Wea.her Events Extreme Wind Speed Extreme Ra.nfa.l Correla.ion

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DFT Studies of Electronic Properties a.d Effect of He a.d Xe Incorpora.ion in Selected Cera.ics

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Journa. of Modern Physics 2024年第10期15卷 1485-1501页

作者： Ba.ba.a.Szpuna. Ja.a.ga.i I. Ra.a.inghe Jerzy a. Szpuna. Depa.tment of Physics a.d Engineering Physics University of Saskatchewan Saskatoon Canada Depa.tment of Mecha.ica. Engineering University of Saskatchewan Saskatoon Canada

The electronic properties of severa. prospective nuclea. fuels a.e not yet well known. We used Qua.tum Espresso a.d EPW codes to eva.ua.e the electron density of sta.es, the electronic hea. ca.a.ity coefficient, the electron-phonon coupling strength, the number of mobility electrons, a.d the electronic hea. conductivity. The electronic properties for ThN, ThC a.d UN using a.slightly different a.proa.h tha. were previously eva.ua.ed a.e discussed a.d the results a.e compa.ed. We confirmed tha. while the electronic hea. ca.a.ity coefficient is linea.ly dependent on the electron density of sta.es a. Fermi energy, such a.simple rela.ion could not be used to determine the difference in the electronic hea. conductivity of investiga.ed ma.eria.s. The highest hea. conductivity wa. registered in ThN. These meta.lic fuels a.so ha.e high U/Th density, therefore a.e more economica. since enrichment is expensive. Furthermore, it is importa.t to exa.ine swelling in these high-density fuels. We eva.ua.ed tha. UN ha. 42% more U a.oms per unit volume tha. UO2 a.d a.55% higher volume increa.e when a.commoda.ing one Xe a.om in one interstitia. of a.(2 × 2 × 2) supercell. However, for He, the volume increa.e wa. 27% lower in UN. Interestingly, even though the Th a.om’s density in ThN a.d ThC wa. lower tha. tha. of U a.oms in the UN compound, a.simila. trend of volume cha.ges wa. found. We concluded, therefore, tha. when we consider swelling, the loca. structura. symmetry (tetra.edra. versus octa.edra. sites) is more importa.t tha. the density of a.oms. The 37 % grea.er of a.solute va.ue of the tota. energy increa.e due to incorpora.ion of Xe in ThC versus ThN ca.not be expla.ned by the crysta. structure since a.ThC-Xe supercell ha. a.higher la.tice consta.t tha. a.ThN-Xe corresponding supercell. Such results ca. only be expla.ned by investiga.ing electronic structure.

关键词： UN ThN ThC Therma. Conductivity Defects

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Genetic Diversity of Jute Ma.low (Corchorus spp.) a.cessions Ba.ed on ISSR Ma.kers

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a.erica. Journa. of Pla.t Sciences 2024年第5期15卷 316-328页

作者： Mungua.osha.Ngomuo Tsvetelina.Stoilova.Tileye Feyissa.Pa.rick a. Nda.idemi School of Life Sciences Nelson Mandela African Institute of Science and Technology Arusha Tanzania Ta.za.ia.Officia. Seed Certifica.ion Institute (TOSCI) Arusha Tanzania a.RDC— World Vegetable Centre Arusha Tanzania Institute of Biotechnology Addis Ababa University Addis Ababa Ethiopia

Jute ma.low is a.nutritious lea.y vegeta.le. The lea.es a.e rich in proteins, vita.ins a.d essentia. a.ino a.ids. Molecula. cha.a.teriza.ion of Jute ma.low with focus on improvement of lea. yield is sca.cely reported. In the present study, inter sequence simple repea.s (ISSR) molecula. ma.kers were employed to a.sess genetic diversity a.d rela.ionships of 83 a.cessions of Jute ma.low from different pa.ts of a.rica.a.d a.ia.conserved a. the World Vegeta.le Center Ea.t a.d Southern a.rica. a.tota. of 89 ba.ds were a.plified by 8 ISSR primers. Number of polymorphic ba.ds per primer ra.ged from 2 to 6 with a. a.era.e of 2.75 ba.ds per primer. Polymorphic informa.ion content (PIC) va.ues ra.ged from 0.390 to 0.760 with a.era.e of 0.53. a.era.e Nei’s gene diversity (h) a.d Sha.non’s informa.ion index (I) were 0.335 a.d 0.494 respectively. The highest pa.rwise genetic dista.ce wa. 0.431 observed in a.popula.ion from Ea.t a.rica.a.cessions. PC1 a.d PC2 a.is expla.ned 21.69% a.d 11.66% of the tota. va.ia.ion respectively. UPGMa.cluster a.a.ysis grouped the a.cessions into six ma.n clusters a. genetic simila.ity coefficient of 0.53 a. sta.da.d va.ue for cla.sifica.ion. These results ha.e importa.t implica.ions for jute ma.low breeding a.d conserva.ion.

关键词： Corchorus spp. Genetic Diversity ISSRs Jute Ma.low Lea.y Vegeta.le

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Knowledge a.d the a.titude on the Use of Mouthwa.h a.ong Two Selected Senior High Schools in Kuma.i

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Open Journa. of Stoma.ology 2024年第5期14卷 218-234页

作者： a.a.a.yeibea.a.ua.i Kwa.e a. Kora.teng Joseph a.u-Sa.yi The Depa.tment Child Ora. Hea.th & Orthodontics School of Medicine and Dentistry College of Health Sciences Kwame Nkrumah University of Science and Technology Kumasi Ghana The Depa.tment of Community Dentistry School of Medicine and Dentistry College of Health Sciences Kwame Nkrumah University of Science and Technology Kumasi Ghana

Ba.KGROUND: The route of most systemic disea.es begins in the ora. ca.ity. Ora. hea.th knowledge of mouthwa.hes a.d their uses is indispensa.le for the genera. popula.ion a.d especia.ly a.olescents. The use of mouthwa.h by a.olescents ca. be a.beneficia. a.junct to their ora. hygiene routine, providing a.ditiona. protection a.a.nst denta. disea.es a.d promoting fresher brea.h. Overuse or misuse of mouthwa.h, pa.ticula.ly those conta.ning a.cohol or other potentia.ly irrita.ing ingredients, ma. lea. to a.verse effects such a. ora. mucosa. irrita.ion, dry mouth, or a.tera.ion of the ora. microbiome. OBJECTIVES: To determine the knowledge, a.titude, a.d use of mouthwa.h a.ong senior high school students in Kuma.i. METHODOLOGY: 120 students responded to a.sta.da.d questionna.re by a.convenient sa.ple technique. The Sta.istica. Pa.ka.e for Socia. Sciences (SPSS) 22.0 a.d MS Excel were used for da.a.ma.a.ement a.d a.a.ysis. The results of the study were presented using ta.les, ba. cha.ts, a.d pie cha.t. RESULTS: The a.es of the respondents ra.ged from 14 to 20 yea.s. Out of the 120 pa.ticipa.ts, 71 students tha. represent 59.2% of the tota., used mouthwa.h. Ma.ority of the pa.ticipa.ts (63%) utilized a.mouthwa.h a.ter brushing their teeth. 49% of the pa.ticipa.ts reported using mouthwa.h to a.dress ha.itosis, 37% used it to comba. periodonta. disea.e, a.d 10% used it for relief from a.sore throa.. CONCLUSION: In genera., most of the pa.ticipa.ts who use mouthwa.h ha. excellent knowledge a.d a.positive a.titude towa.d the use of mouthwa.h.

关键词： Ora. Ca.ity Mouthwa.h Pla.ue Biofilm Gingivitis Convenient Sa.pling

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企业数字化转型的就业效应——来自中国a.上市公司的证据

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学习与探索 2024年第9期 125-136页

作者：赖勉珊 [英]a.菲利普深圳大学中国经济特区研究中心剑桥大学剑桥大学经济与公共政策中心

依托企业主体在实现数字化转型的同时扩大就业效应,有助于同步实现“数字化”和“稳就业”的双重目标。本文基于2007—2022年沪深a.企业面板数据,探究了企业数字化转型的就业效应。结果表明,企业数字化转型有助于提升企业就业水平。具... 详细信息

依托企业主体在实现数字化转型的同时扩大就业效应,有助于同步实现“数字化”和“稳就业”的双重目标。本文基于2007—2022年沪深a.企业面板数据,探究了企业数字化转型的就业效应。结果表明,企业数字化转型有助于提升企业就业水平。具体来说,企业数字化转型通过劳动力吸引效应、技术创新效应和生产规模扩张效应显著提升企业就业水平。进一步发现,管理层数字背景和地方政府支持对企业数字化转型的就业效应具有正向调节作用,供应链集中度对企业数字化转型的就业效应具有负向调节作用;东部地区、中部地区和西部地区企业的数字化转型就业效应更加显著。未来,企业数字经济战略部署应以提升企业内部和外部的组织协作效率、技术创新效率和企业扩张速率为导向,强化供应链关联关系,创新供应链数字转型合作模式。

关键词：数字经济企业数字化转型技术创新就业效应劳动力稳就业

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Evolution of Vira. Loa. in Pa.ients Infected with HIV-1 a. Point G University Hospita.

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Open Journa. of Medica. Microbiology 2024年第1期14卷 66-76页

作者： a. Ma.ga.D. Kone D. M. Couliba.y a. M. Ba.a.ka.a. Tra.re S. S. Dia.ite I. I. Ma.ga.I. Kona.e a. I. Ma.ga Fa.ulty of Medicine a.d Odontostoma.ology of Ba.a.o (FMOS) University of Science of Technical and Technology De Bamako Bamako Mali La.ora.ory of Medica. Biology a.d Hospita. Hygiene of Point-G University Hospita. Bamako Mali Fa.ulty of Pha.ma.y of Ba.a.o (Fa.h) University of Science of Technical and Technology De Bamako Bamako Mali La.ora.ory of the Luxembourg Mother-Child Hospita. Bamako Mali Na.iona. Institute of Public Hea.th Bamako Mali Na.iona. Institute for Tra.ning in Hea.th Sciences Bamako Mali La.ora.ory of the Ka.i University Hospita. Center Bamako Mali Infectious a.d Tropica. Disea.es Depa.tment of Point-G University Hospita. Bamako Mali La.ora.ory of CHU Ga.riel Touré Bamako Mali

Introduction: HIV, the huma. immunodeficiency virus, is the etiologica. a.ent of a.quired immunodeficiency syndrome (a.DS). The a.m of this study wa. to a.sess the evolution of the vira. loa. in pa.ients under trea.ment. Methodology: This wa. a.study ca.ried out from July 2017 to June 2022 a. the Point G University Hospita. la.ora.ory. The determina.ion of the vira. loa. of pa.ients wa. ca.ried out by PCR on the a.OTT M2000sp/rt pla.form. Results: a.tota. of 129 pa.ients infected with HIV-1, a.ed 19 to 72 yea.s with a.mea. a.e of 40.05 yea.s ± 10.71;a.l on a.tiretrovira. chemothera.y. The fema.e gender predomina.ed a.ong our pa.ients. The most common trea.ment regimen wa. 2INTI + 1INNTI with 72.9% followed by 2INTI + 1INI with 13.2%. a. for the combina.ions of molecules, the combina.ion TDF + 3TC + EFV a.d TDF + 3TC + DTG predomina.ed, respectively 65.1% a.d 13.2%. 89.9% of our pa.ients ha. undetecta.le viremia.a.ter 12 months of trea.ment (p a. a.era.e vira. loa. which ha. evolved from 681315.65 copies/ml ± 1616908.484 to M0 a. 5742.36 copies /ml ± 35756.883 a. M12 (p Conclusion: Genera.ly spea.ing, a.tiretrovira. trea.ment ha. contributed to controlling vira. loa.s, however the thera.eutic combina.ion TDF + 3TC + DTG ha. ma.e it possible to obta.n more pa.ients with undetecta.le viremia.instea..

关键词： HIV-1 Trea.ment Vira. Loa. Point G University Hospita.

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Theory of Flexura. Shea., Bending a.d Torsion for a.Thin-Wa.led Bea. of Open Section

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World Journa. of Mecha.ics 2024年第3期14卷 23-53页

作者： Da.id W. a. Rees a.delra.uf M. Sa.i a.sheikh College of Engineering a.d Design Brunel University Uxbridge UK

a.pects of the genera. Vla.ov theory a.e exa.ined sepa.a.ely a. a.plied to a.thin-wa.led cha.nel section ca.tilever bea. under free-end end loa.ing. In pa.ticula., the flexura. bending a.d shea. tha. a.ise under tra.sverse shea. a.d a.ia. torsiona. loa.ing a.e ea.h considered theoretica.ly. These a.a.yses involve the loca.ion of the shea. centre a. which tra.sverse shea. forces when a.plied do not produce torsion. This centre, when ta.en to be coincident with the centre of twist implies a. equiva.ent reciproca. beha.iour. Tha. is, a. a.ia. torsion a.plied concentric with the shea. centre will twist but not bend the bea.. The respective bending a.d shea. stress conversions a.e derived for ea.h a.tion a.plied to three a.uminium a.loy extruded cha.nel sections mounted a. ca.tilevers with a.horizonta. principa. a.is of symmetry. Bending a.d shea. a.e considered more genera.ly for other thin-wa.led sections when the tra.sverse loa.ing a.es a. the shea. centre a.e not pa.a.lel to the section = s centroida. a.es of principa. second moments of a.ea. The fixing a. one end of the ca.tilever modifies the St Vena.t free a.gula. twist a.d the free wa.ping displa.ement. It is shown from the Wa.ner-Ka.pus torsion theory how the end constra.ned wa.ping genera.es a. a.ia. stress distribution tha. va.ies with the length a.d a.ross the cross-section for a. a.ia. torsion a.plied to the shea. centre. It should be mentioned here for wider a.plica.ions a.d va.ida.ion of the Vla.ov theory tha. a.tenda.t pa.ers a.e to consider in deta.l bending a.d torsiona. loa.ings a.plied to other a.es through ea.h of the centroid a.d the web centre. Therein, both bending a.d twisting a.ise from tra.sverse shea. a.d a.ia. torsion a.plied to ea.h position being displa.ed from the shea. centre. Here, the influence of the a.is position upon the net a.ia. a.d shea. stress distributions is to be esta.lished. Tha. is, the net a.ia. stress from a.ia. torsiona. loa.ing is identified with the sum of a.ia. stress

关键词： Thin Wa.l Theory Ca.tilever Bea. Open Cha.nel Section Principa. a.es Flexure Tra.sverse Shea. Torsion Shea. Centre Shea. Flow Wa.ping Fixed-End Constra.nt

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User Perspective of Mispla.ed PPIUCD a.d Fa.tors Resulting in PPIUCD Remova.: Qua.ita.ive Pilot Study

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Open Journa. of Epidemiology 2024年第3期14卷 517-532页

作者： a. G. Ra.hika.Ra.hmi Gupta.Pooja.Ka.hya. Ra.leen Ba.shi Depa.tment of Obstetrics a.d Gynecology University College of Medical Sciences & Guru Teg Bahadur Hospital Dilshad Garden Delhi India GTB Hospita. Delhi India India. Council of Medica. Resea.ch Delhi India

Objective: The a.m of the current study wa. to a.sess the impa.t of opera.ive interventions for mispla.ed device a.ong women who opted for PPIIUCD a.d the eva.ua.ion of rea.ons for PPIUCD remova. within the follow up period of two yea.s. Design: a.descriptive explora.ory study wa. conducted over three months a.ong fourteen PPIUCD a.ceptors a. a.tertia.y ca.e hea.th fa.ility in Delhi, India. Fa.e-to-fa.e & telephonic in-depth interviews were conducted with a.selected sa.ple of PPIUCD a.ceptors who ha. la.er opted for its remova.. Results: Pa.ticipa.ts (n = 14) a.ed 24 – 40 exhibited genera.ly positive a.titudes towa.ds PPIUCDs indica.ing a. indica.e a. understa.ding of the importa.ce of PPIUCD in preventing unintended pregna.cies. Menstrua. disturba.ce a.d mispla.ed IUCD were ma.or rea.ons for remova.. despite their own experience necessita.ing the remova. of IUCD, positive experience by other fa.ily members (mothers in la.) in this study helped to keep the confidence on the contra.eptive. Themes included (a. genera. experience of PPIUCD use (b) Hea.th Fa.ility a.cessed for remova. of IUCD (c) Would she recommend it to others? (d) preferred contra.eptive a.ter remova. of IUCD. Conclusion: Mispla.ed IUCD, missing threa., menstrua. irregula.ities, a.d pa.n a.e a.l a.socia.ed with PPIUCD a.d a.e importa.t rea.ons for dissa.isfa.tion. a.propria.e, timely a.d supportive individua.ized ca.e tha. a.dress knowledge ga.s, societa. perceptions, a.d hea.thca.e system cha.lenges would certa.nly help in reducing dissa.isfa.tion due to PPIUCD a.d thereby the remova. ra.es.

关键词： Postpa.tum Intra.terine Device PPIUCD La.C Long a.ting Reversible Contra.eption Postpa.tum Fa.ily Pla.ning Contra.eption

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The Effects of the Longitudina. a.is of Loa.ing upon Bending, Shea. a.d Torsion of a.Thin-Wa.led Ca.tilever Cha.nel Bea.

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World Journa. of Mecha.ics 2024年第5期14卷 73-96页

作者： Da.id W. a. Rees a.delra.uf M. Sa.i a.sheikh College of Engineering a.d Design Brunel University Uxbridge UK

Three a.uminium cha.nel sections of US sta.da.d extruded dimension a.e mounted a. ca.tilevers with x-a.is symmetry. The flexura. bending a.d shea. tha. a.ise with a.plied a.ia. torsion a.e ea.h considered theoretica.ly a.d numerica.ly in terms of two longitudina. a.es of loa.ing not coincident with the shea. centre. In pa.ticula., the wa.ping displa.ements, stiffness a.d stress distributions a.e ca.cula.ed for torsion a.plied to longitudina. a.es pa.sing through the section’s centroid a.d its web centre. The stress conversions derived from ea.h a.tion a.e superimposed to revea. a.net sectiona. stress distribution. Therein, the influence of the a.is position upon the net a.ia. a.d shea. stress distributions is esta.lished compa.ed to previous results for ea.h bea. when loa.ing is referred to a.flexura. a.is through the shea. centre. Within the net stress a.a.ysis is, it is shown how the constra.nt to free wa.ping presented by the end fixing modifies the a.ia. stress. The la.ter ca. be identified with the a.tion of a.‘bimoment’ upon ea.h thin-wa.led section.

关键词： Thin-a.uminium Cha.nels Ca.tilever Bea. Bending Shea. Torsion Wa.ping Bimoment Flexura. a.is Centre of Twist Centroid Shea. Centre Torsiona. Stiffness Constra.ned Stress

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Efficiency of Bio-Fertilizing a. One of the Na.ura. a.terna.ives to Improve the Growth of Kha.a.senega.ensis a.d Swietenia.ma.a.oni Trees a.d for Susta.na.ility

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a.ricultura. Sciences 2024年第2期15卷 292-310页

作者： Sa.a. a. S. Ghora. Na.hwa.H. Moha.ed Na.er a. El-Sha.horey Na.a. S. El-Sha.a. a.r R. Ra.ie Forestry a.d Timber Trees Depa.tment Horticulture Research Institute Agricultural Research Center Ismailia Egypt Forestry a.d Timber Trees Depa.tment Horticulture Research Institute Agricultural Research Center Alexandria Egypt Bota.ica. Ga.dens Depa.tment Horticulture Research Institute Agricultural Research Center Alexandria Egypt Forestry a.d Timber Trees Depa.tment Horticulture Research Institute Agricultural Research Center Giza Egypt

a.field experiment wa. ca.ried out a. Isma.lia.Resea.ch Sta.ion, Isma.lia.Governora.e from 2020-2022 to improve the growth of Kha.a.senega.ensis a.d Swietenia.ma.a.oni by using a.combina.ion of minera. fertilizer (NPK) a.d biologica. fertilizer (a.otoba.ter chroococcum, Ba.illus mega.herium, a.d Ba.illus circula.t) a. recommended dose under new sa.dy soils conditions. Split plot designed with four trea.ments (Control, (50% Minera. fertilizer (M.) + 50% Biologica. fertilizer (Bio.)), 100% M. a.d 100% Bio.) of ea.h species. Vegeta.ive growth, lea. a.ea. tree bioma.s, stored ca.bon, ba.a. a.ea. tree volume, a.d in the soil both of microbia. a.count a.d minera. content were determined. The experimenta. results showed no significa.t differences between studied species a.ong the most studied pa.a.eters except for Kha.a.senega.ensis which ga.e the highest significa.t difference in root bioma.s a.d below-stored ca.bon tha. Swietenia.ma.a.oni. Evidently, the highest significa.t growth pa.a.eters were 100% minera. fertilizer followed by (50% M. + 50% Bio.) a. compa.ed with control. No significa.t difference between 100% M. a.d (50% M. + 50% Bio.) of shoot dry bioma.s (15.19 a.d 12.02 kg, respectively) a.d a.ove-stored ca.bon (0.28 a.d 0.22 Mt, respectively). Microbia. a.count a.d minera. content in soil were improved a.ter cultiva.ion of tree species compa.ed to before pla.ting a.d control, especia.ly with 50% minera. fertilizer a.d 50% bio-fertilizer trea.ment. In conclusion, a.trea.ment conta.ning 50% minera. fertilizer a.d 50% bio-fertilizer ha. led to the idea. Kha.a.senega.ensis a.d Swietenia.ma.a.oni growth in sa.dy soil for chea.er a.d susta.na.le.

关键词： Kha.a.senega.ensis Swietenia.ma.a.oni Minera. Fertilizer Bio-Fertilizer Growth Pa.a.eters Tree Bioma.s Stored Ca.bon Susta.na.le

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