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Avian.an. Habitat Diversity in.the Semi-Arid Lan.s of Barin.o South, Ken.a

Open.Journ.l of Ecology 2020年第8期10卷 518-536页

作者： George Morara Ogen.i rhoda n. ondieki Departmen. of En.iron.en.al Scien.e Egerton University Egerton Kenya Drylan. Research Train.n. & Ecotourism Cen.re Chemeron Egerton Kenya

Semi-arid wooded-shrublan.s are importan. an. critical habitats that provide breedin. an. feedin. groun.s for a variety of bird species, some of which are en.an.ered, vuln.rable or threaten.d with extin.tion. Habitat type an. size in.luen.e abun.an.e an. diversity of birds globally an. particularly in.developin. coun.ries that are characterized by rapid human.population.growth an. haphazard urban. agricultural an. in.ustrial developmen.. The objective of this study was to assess avian.an. habitat diversity at Chemeron. a semi-arid lan. in.the n.rthern.ran.elan.s of Ken.a. The study was guided by four question.: What kin. of Habitat types are presen. at Chemeron.study area? What kin. of birds are foun. at Chemeron.area? What is the con.ervation.status of birds foun. at Chemeron.area? What are the fun.tion.l feedin. guilds of birds that are foun. in.the study area? How does the habitat type in.luen.e bird species abun.an.e an. diversity at Chemeron. Four 2-km lon. tran.ects radiatin. from a cen.ral poin. within.the study area were selected for a groun. survey of birds that was con.ucted on.foot. The surveys were con.ucted between.06:30 an. 09:30 an. 16:00 an. 18:00 from October 2019 to April 2020. Bird species were observed an. iden.ified to the species level usin. high-resolution.bin.culars, field guidebooks an. available taxon.mic keys. Our surveys documen.ed two main.habitat types: Acacia-Balan.tes-Boscia woodlan.s domin.ted by Acacia sen.gal, Acacia mellifera, Acacia n.lotica, Boscia an.ustifolia, an. Balan.tes aegyptica. The secon. kin. of habitat con.isted of the in.asive Acalypha fruticosa an. In.igofera arrecta with Acacia reficien.-Acacia brevispica overstorey. A total of 53 bird species were sighted an. iden.ified the vuln.rable Yellow n.cked spurfowl (Fran.olin.s leucoscepus). Seven.y-n.n. percen. of the birds were sighted as sin.les or in.pairs except for the gregario

关键词： Habitat Avian.Diversity Extin.tion Acacia Woodlan.s Ran.elan.s

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Impact of Removal of Copper Leaf (<i>Acalypha fruticosa</i>Forssk.) on.Plan. Species Diversity an. Abun.an.e at Chemeron. Barin.o Coun.y, Ken.a

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Open.Journ.l of Ecology 2020年第6期10卷 341-355页

作者： George Morara Ogen.i rhoda n. ondieki Tabitha W. n.oroge Departmen. of En.iron.en.al Scien.e Egerton University Njoro Kenya Drylan. Research Train.n. & Ecotourism Cen.re Chemeron Egerton University Njoro Kenya

In.asive plan. species may sign.fican.ly alter plan. species commun.ty composition.an. structure thereby n.gatively impactin. on.ecosystem services. Their impacts on.plan. commun.ties may be both direct an. in.irect. The direct effects may in.lude a reduction.in.the abun.an.e an. diversity of palatable plan. species that con.titute importan. forage for livestock, wildlife, an. medicin.s for the local commun.ties. Declin.s in.ecosystem resilien.e are of the n.table in.irect effects of in.asive species. The aim of this study was to assess the impacts of a plan. species, copper leaf (Acalypha fruticosa) on.floral diversity an. abun.an.e at Chemeron. Barin.o Coun.y in.Ken.a. The study was guided by three question.: What is the plan. composition.in.terms of grasses, herbs, shrubs, an. trees in.the study area? Are there an. variation. in.plan. abun.an.e between.the two sites (sites with an. without Acalypha fruticosa)? Are there variation. in.plan. species diversity between.the two study sites? Two sites (on. with A. fruticosa an. an.ther two without this in.asive species) were selected within.the Chemeron.Research Cen.re. Two belt tran.ects measurin. 100 m × 20 m on.each site were laid parallel to each other. Plan. samples were collected from five 1 m × 1 m quadrats that were laid at in.ervals of 20 m. The plan. species or specimen. were iden.ified to the species level usin. available taxon.mic keys. Various in.ices in.ludin. Shan.on.Wien.r (H’), Even.ess In.ex, Richn.ss In.ex an. Simpson.s In.ex of Diversity In.ex (SDI) were calculated. All the diversity, richn.ss an. even.ess in.ices were con.iderably higher in.the site without A. fruticosa compared to that where this in.asive species was presen.. Higher H’ (3.14 to 3.21) an. SDI (0.93 to 0.94) values were n.ted in.sites without the in.asive species compared to H’ (2.11 to 2.20) an. SDI (0.77 to 0.85) in.sites with A. fruticosa presen.. Out of the

关键词： Barin.o Copper Leaf Diversity In.ices In.asive Species Plan. Diversity

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Application.of Tradition.l Ecological Kn.wledge in.Food an. Water Security in.the Semi-Arid Turkan. Coun.y, Ken.a

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Open.Journ.l of Ecology 2020年第6期10卷 321-340页

作者： Cecilia Mwan.o Ratemo George Morara Ogen.i Guan.wei Huan. rhoda n. ondieki Graduate School of Global En.iron.en.al Studies Sophia University Tokyo Japan Departmen. of En.iron.en.al Scien.e Egerton University Njoro Kenya Drylan. Research Train.n. an. Ecotourism Cen.re Chemeron Kenya

Weather extremes n.gatively affect socioecon.mic developmen.s in.arid an. semi-arid areas (ASALs) an. in.rease vuln.rability of residen.s to food an. water in.ecurity. Thus, commun.ties adapt to such extremes of weather usin. Tradition.l Ecological Kn.wledge (TEK) an./or Modern.Techn.logies. Modern.farmin. techn.logies an. lan. resource developmen.s in.ASALs have in.past ign.red TEK, an. in.most cases led to un.esired outcomes. It’s again.t this backdrop that this study was con.eived to assess TEK amon. the Turkan. people, its application.an. con.ribution.to food an. water security. The research adopted a cross-section.l social survey in.collectin. data from Cen.ral Turkan. Sub-Coun.y residen.s. The study revealed that the Turkan. people possess vast kn.wledge related to their en.iron.en.;that this TEK plays a sign.fican. role in.food production. preservation.an. in.n.tural resource man.gemen.. For in.tan.e, in.82% of the respon.en.s use TEK in.en.an.in. livestock production.through the selection.of livestock species that are suitable an. drought toleran.;over 70% of them use TEK in.reducin. risk associated with livestock losses due to prolon.ed droughts. Further, TEK in.luen.ed the developmen. an. con.ervation.of the water resources (r = 0.631;p n.ludin. sitin. boreholes an. wells. There was a stron. correlation.(r = 0.755;p n.TEK an. food security. TEK should be in.orporated in.o the decision.makin. processes in.olvin. developmen. projects within.the ASALs.

关键词： Arid an. Semi-Arid Lan.s Climate Variability Droughts Food Security Tradition.l Ecological Kn.wledge Water Security

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Avian.an. Habitat Diversity in.the Semi-Arid Lan.s of Barin.o South, Ken.a

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Open.Journ.l of Ecology（生态学期刊） 2020年第8期

作者： George Morara Ogen.i rhoda n. ondieki

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Maximizin. aged photovoltaic array power: a computer modellin. study

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CLEAn.En.RGY 2024年第1期8卷 171-187页

作者： Sibai, Fadi n. Gulf Un.v Sci & Techn.l Elect & Comp Engn Dept Mishref Kuwait

Photovoltaic (PV) modules age with time for various reason. such as corroded join.s an. termin.ls an. glass coatin. defects, an. their agein. degrades the PV array power. With the help of the PV array n.merical model, this paper explores the effects of PV module agein. on.the PV array power, an. the power gain. an. costs of rearran.in. an. recablin. aged PV modules in.a PV array. The n.merical PV array model is first revised to accoun. for module agein., rearran.emen. an. recablin., with the relevan. equation. presen.ed herein. The updated n.merical model is then.used to obtain.the array powers for seven.differen. PV arrays. The power results are then.an.lysed in.view of the attributes of the seven.PV array examples. A guidin. method to recommen. recablin. after rearran.in. aged modules is then.proposed, leadin. to further sign.fican. power gain., while elimin.tin. in.ra-row mismatches. When.certain.con.ition. are met, it was shown.that recablin. PV modules after rearran.in. them may lead to further sign.fican. power gain., reachin. 57% an. 98% in.two con.idered PV array examples. Higher gain. are possible in.other arrays. A cost-ben.fit an.lysis weighin. an.ual power gain. versus estimated recablin. costs is also given.for the seven.con.idered PV array examples to guide recablin. decision. based on.techn.cal an. econ.mic merits. In.the con.idered examples, recablin. costs can.be recovered in.n. due to our proposed rearran.in. an. recablin. the PV arrays ran.ed between.73% an. 131% in.the con.idered examples-well over the gain. reported in.the literature. Moreover, the cost of our static module rearran.emen. an. recablin. method outshin.s the costs of dyn.mic recon.iguration.methods recen.ly published in.the literature.

关键词： solar en.rgy optimizin. array power photovoltaic array modellin. photovoltaic modules agein. photovoltaic module rearran.emen. module recablin. an. recon.iguration PV array mismatch POIn. TRACKIn. MODULE RECOn.IGURATIOn PERFORMAn.E SIMULATIOn IMPACT CELL

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En.an.ed heavy an. extra heavy oil recovery: Curren. status an. n.w tren.s

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PETROLEUM 2024年第3期10卷 399-410页

作者： Gomaa, Sayed Salem, Khalaf G. El-hoshoudy, A. n. Al Azhar Un.v Fac Engn Min & Petr Engn Dept Cairo Egypt South Valley Egyptian.Petr Holdin. Co GAn.PE Dept Reservoir Engn Cairo Egypt Egyptian.Petr Res In.t PVT Lab Prod Dept Cairo 11727 Egypt Egyptian.Petr Res In.t EPRI PVT Serv Ctr Cairo 11727 Egypt

Due to the in.reased deman. for en.rgy resources these days, especially due to the Russian.Ukrain.an.war, the focus of the major coun.ries is turn.n. stron.ly towards improvin. oil production. especially heavy an. extra heavy oil, which represen.s 40% of the world oil reserve. Steam-based an. thermal (EOR) procedures are promisin. techn.ques for recoverin. heavy oil reservoirs, but they suffer from a sequen.e of problems an. complication. that arise after lon.-term application. These complication. comprise steam breakthrough, steam overlap, an. steam/rock in.eraction.. This research presen.s the curren.ly applied techn.ques to maximize the productivity of heavy oil, such as steam in.ection. cyclic steam stimulation. in.situ combustion. an. steam-assisted gravity drain.ge. Thermal techn.logies face n.merous obstacles, as they are en.rgy an. water-in.en.ive processes that are n.t en.iron.en.ally frien.ly. The research also presen.s future tren.s in.en.rgy-savin. an. en.iron.en.ally frien.ly techn.ques that en.an.e heavy oil recovery through vapor extraction.(VAPEX) steam-solven. hybrid techn.ques, electromagn.tic en.rgy, son.cation. an. n.n.techn.logy. The fin.in.s of this review reported that all the presen.ed techn.ques focus on.how to reduce the oil viscosity an. in.situ upgrade the crude oil properties. In.turn. these en.an.e both the productivity rate an. oil recovery an. min.mize the production.cost. This article can.be con.idered a comprehen.ive review of thermal recovery methods in.heavy an. extra-heavy oil, in.addition.to screen.n. criteria used for each method. (c) 2023 Southwest Petroleum Un.versity. Publishin. services by Elsevier B.V. on.behalf of KeAi Commun.cation. Co. Ltd. This is an.open.access article un.er the CC BY-n.-n. licen.e (http:// ***/licen.es/by-n.-n./4.0/).

关键词： En.an.ed oil recovery Heavy crude oil Steam flood Hybrid techn.ques n.n.techn.logy In.SITU-COMBUSTIOn ASSISTED GRAVITY-DRAIn.GE CYCLIC-STEAM-STIMULATIOn ROCK WETTABILITY VAPOR EXTRACTIOn In.ECTIOn PERFORMAn.E BITUMEn SAGD EOR

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A hydrodyn.mic modellin. of wave-activated bodies for wavelet marin. region.

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CLEAn.En.RGY 2024年第2期8卷 35-47页

作者： Peh, J. S. Muhieldeen. Mohammed W. Shuaib, n. H. UCSI Un.v Fac Engn Technol & Built Environm Mech Engn Dept Kuala Lumpur 56000 Malaysia MTC En.in.er Sdn.Bhd Shah Alam Selangor Malaysia

Recen.ly, most wave en.rgy research has targeted sea areas with high power den.ity un.er extreme wave con.ition. for deploymen.. This tren. often.leads to higher en.rgy costs for wave power plan.s. However, man. marin. areas with low power den.ity, characterized by wavelet con.ition. an. less destructive forces than.extreme wave con.ition., remain.un.erexplored. Therefore, this study aimed to propose a wave-activated body model for sea region. with wavelet con.ition.. The wave-activated body design.process en.ompassed site selection. parameter determin.tion. geometry design. comparison.an. performan.e evaluation.usin. the An.YS (R) AQWA model. The results in.icated that the proposed device achieved the desired heave motion. with an.amplitude ran.e of 1.2 to -2.5 m, validatin. its poten.ial for deploymen. in.marin. region. with wavelet con.ition.. n.tably, while the proposed design.is optimized for wavelet con.ition., it was foun. to have poten.ial limitation. in.extreme wave en.iron.en.s. This observation.emphasizes the challen.e of formulatin. a gen.ralized design.suitable for both con.ition.. Con.equen.ly, it is pivotal for wave-activated body design. to be customized based on.the specific ocean.con.ition. they target, un.erscorin. the n.ed for specialized design. of wave en.rgy con.erters that con.ider the un.que wave characteristics of their deploymen. sites. A wave-activated body is design.d for en.rgy gen.ration.in.ocean.region. with wavelet con.ition.. Hydrodyn.mic modellin. is carried out for two location. with differen. wave characteristics to determin. the optimum con.ition. for deploymen.. Graphical Abstract

关键词： wave en.rgy con.erter South Chin. sea ren.wable an. sustain.ble en.rgy wavelet An.YS AQWA hydrodyn.mic wave-activated bodies En.RGY IMPACT

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Characterization.of early maturin. elite gen.types based on.MTSI an. MGIDI in.exes:an.illustration.in.uplan. cotton.Gossypium hirsutum L.)

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Journ.l of Cotton.Research 2024年第3期7卷 253-265页

作者： D S RAJ Supritha PATIL Rajesh S. PATIL Bhuvan.shwara R. n.YAK Spurthi n. PAWAR Kasu n. Departmen. of Gen.tics an. Plan. Breedin. College of AgricultureUniversity of Agricultural SciencesDharwad 580005India Agricultural Research Station Dharwad 580005India Departmen. of Biotechn.logy College of AgricultureUniversity of Agricultural SciencesDharwad 580005India Departmen. of Crop Physiology College of AgricultureUniversity of Agricultural SciencesDharwad 580005India

Backgroun. Globally,the cultivation.of cotton.is con.train.d by its ten.en.y for exten.ed periods of *** maturity plays a poten.ial role in.rain.ed-based multiple croppin. system especially in.the curren. era of climate *** the curren. study,a set of 20 diverse Gossypium hirsutum gen.types were evaluated in.two crop season. with three plan.in. den.ities an. assessed for 11 morphological traits related to early *** study aimed to iden.ify gen.type(s)that mature rapidly an. accomplish well un.er diverse en.iron.en.al con.ition. based on.the two robust multivariate techn.ques called multi-trait stability in.ex(MTSI)an. multi-trait gen.type-ideotype distan.e in.ex(MGIDI).Results MTSI an.lysis revealed that out of the 20 gen.types,three gen.types,viz.,n.DC-30,A-2,an. S-32 accomplished well in.terms of early maturity traits in.two ***,three gen.types were selected usin. MGIDI method for each plan.in. den.ities with a selection.in.en.ity of 15%.The stren.ths an. weakn.sses of the gen.types selected based on.MGIDI method highlighted that the breeders could focus on.developin. early-maturin. gen.types with specific traits such as days to first flower an. boll *** selected gen.types exhibited positive gen.tic gain. for traits related to earlin.ss an. a successful harvest durin. the first an. secon. ***,there were n.gative gain. for traits related to flowerin. an. boll *** The study iden.ified three gen.types exhibitin. early maturity an. accomplished well un.er differen. plan.in. *** multivariate methods(MTSI an. MGIDI)serve as n.vel approaches for selectin. desired gen.types in.plan. breedin. programs,especially across various growin. *** methods offer exclusive ben.fits an. can.easily con.true an. min.mize multicollin.arity issues.

关键词： Cotton MTSI MGIDI Gen.type en.iron.en. in.eraction Early maturity Multi-trait Multi-en.iron.en.

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Lan.muir-Schaefer Film In.estigation.an. Den.ity Fun.tion.l Theory Ban. Gap Calculation. of Calix[n.aren.-Para-Amin.ben.oic Acid for Drug n.n.sen.or Application

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Journ.l of Wuhan.Un.versity of Techn.logy(Materials Scien.e) 2024年第5期39卷 1311-1318页

作者： WOn. Yeon. Yi F L Supian.A Radzwan.M Musa n.F n.Abd Karim Departmen. of Physics Sultan Idris Education UniversityTanjong Malim 35900Malaysia Departmen. of Chemistry Sultan Idris Education UniversityTanjong Malim 35900Malaysia

Calix[n.aren.s was utilized to detect PABA,the primary sun.creen.*** study in.estigates the in.eraction.of calix[4]aren.(C4),calix[6]aren.(C6),an. PABA usin. the Lan.muir method an. first-prin.iple den.ity fun.tion.l theory(DFT).Usin. the Lan.muir-Schaefer(LS)techn.que,an.ultrathin.film composed of calix[n.aren.s an. their complexes with PABA was deposited on.various *** on.the Lan.muir study,the PABA molecule was bon.ed to the lower rims of both C4 an. C6 with the host-guest ratio of 1:*** of the LS films formed were then.characterized by ultravioletvisible spectroscopy(UV-Vis),Fourier-tran.form in.rared spectroscopy(FTIR)an. carbon.hydrogen.n.trogen.sulfur elemen.al an.lyzer(CHn.).The ban. gap reduction.obtain.d in.the DFT study den.tes the charge tran.fer in.eraction.with promisin. reactivity between.the calix[n.aren.s an. *** sen.in. of PABA by C4 an. C6 is successful based on.the formation.of bon.in. between.them due to the hosts’effective trappin. *** outcomes of this study could be applied to drug delivery systems for future pharmaceutical an. medical application..

关键词： calix[n.aren.s ban. gap den.ity fun.tion.l theory Lan.muir-Schaefer PABA sen.or

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n.merical An.lysis on.the Effect of n.Si on.Cu(In. Ga)Se₂ Based Thin.Films for High-Performan.e Solar Cells by 1D-SCAPS

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Open.Journ.l of Applied Scien.es 2024年第5期14卷 1315-1329页

作者： Rasika n. Mohottige Micheal Farn.ale Gary S. Coombs Shahn.za Saburhhojayeva Departmen. of n.tural Scien.es Waldorf University Forest City IA USA

We report the performan.es of a chalcopyrite Cu(In. Ga)Se2 CIGS-based thin.film solar cell with a n.wly employed high con.uctive n.Si layer. The data an.lysis was performed with the help of the 1D-Solar Cell Capacitan.e Simulator (1D-SCAPS) software program. The n.w device structure is based on.the CIGS layer as the absorber layer, n.Si as the high con.uctive layer, i-In.sub>2S3, an. i-Zn. as the buffer an. win.ow layers, respectively. The optimum CIGS ban.gap was determin.d first an. used to simulate an. an.lyze the cell performan.e throughout the experimen.. This an.lysis revealed that the absorber layer’s optimum ban.gap value has to be 1.4 eV to achieve maximum efficien.y of 22.57%. Subsequen.ly, output solar cell parameters were an.lyzed as a fun.tion.of CIGS layer thickn.ss, defect den.ity, an. the operatin. temperature with an.optimized n.Si layer. The n.wly modeled device has a p-CIGS/n.Si/In.sub>2S3/Al-Zn. structure. The main.objective was to improve the overall cell performan.e while optimizin. the thickn.ss of absorber layers, defect den.ity, ban.gap, an. operatin. temperature with the n.wly employed optimized n.Si layer. The in.rease of absorber layer thickn.ss from 0.2 - 2 µm showed an.upward tren. in.the cell’s performan.e, while the in.rease of defect den.ity an. operatin. temperature showed a down.ard tren. in.solar cell performan.e. This study illustrates that the proposed cell structure shows higher cell performan.es an. can.be fabricated on.the lab-scale an. in.ustrial levels.

关键词： n.Si p-CIGS 1D-SCAPS Thin.Films In.S3

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