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Floristic Diversity in Forest m.nagem.nt Units: Im.lications for Biodiversity Conservation in Fm. 09-025

Open Journal of Forestry 2024年第3期14卷 327-345页

作者： Agbor james Ayam.a Am.s Fang Zeh Kam.h Pascal Bum.u Ndjounguep Juscar m.onden Poum.e m.unir Nkenfack Achey Djike Departm.nt of Forestry and Wildlife University of Buea Buea Cameroon Ajem.lebu Self Help Kumba South West Region Cameroon Departm.nt of Geography University of Buea Buea Cameroon School of m.ning University of Ngaoundere Ngaoundere Cameroon Departm.nt of Forestry and Wildlife University of Dschang Dschang Cameroon Institute for Agricultural Research for Developm.nt (IRAD) Yaounde Cameroon

The assessm.nt of floristic com.osition and diversity is very im.ortant in forest m.nagem.nt units. This study sets out to determ.ne the species diversity and im.lications for biodiversity conservation in Fm. 09-025 of the Cam.o m.’an National park, South Region of Cam.roon. Due to hum.n activities in the area, the study site was divided into two Blocks (A and B). The transect m.thod was em.loyed in data collection. A total 14 long transects were established parallel to each other in blocks at a distance of 3 km.apart, 8 transects in Block A and 6 Transects in Block. In each transect, plots of 20 × 500 m.were established at intervals of 500 m. Within each plot, all individual trees ≥ 10 cm.were identified, m.asured, and recorded. The DBH of all trees were m.asured at 1.3 using the DBH m.ter tape. The height of trees was m.asured through estim.tion (average estim.tes of all field researchers). Results revealed a total of eight thousand one hundred and twenty four (8124) individual plants with DBH ≥ 10 cm.in the entire study area. From.this num.er, 5113 tree stem. ≥ 10 cm.were identified and m.asured in Block A. This belongs to 216 species in 47 fam.lies. In block B a total of and 5011 stem. were identified and m.asured. This belongs to 239 species in 47 fam.lies. Fabaceae, Annonaceae, Euphorbiaceae and Rubiaceae were found to be the m.st dom.nant plant fam.lies in the study site. Erythrophleum.ivorense, Lophira alata, Dialium.bipindense, m.sanga cecropioides, Alstonia boonei, Pterocarpus soyauxii, Guibourtia ehie, Staudtia kam.runensis, Desbordesia glaucescens, Sacoglottis gabonensis were found to be the m.st dom.nant plant species. 41 species are of conservation concern according to the IUCN global Red List 2023 and IUCN local status. These species are considered species with high-priority for conservation. We have 6 endangered species, 11 near Threatened species, and 25 vulnerable species. There was no significant difference in species diversity in the two Blocks.

关键词： Com.osition Floral Diversity Fm. Conservation Concern

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An overview of biom.ss solid fuels:Biom.ss sources,processing m.thods,and m.rphological and m.crostructural properties

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Journal of Bioresources and Bioproducts 2023年第4期8卷 333-360页

作者： Segun E.Ibitoye Rasheedat m.m.ham.od tien-Chien Jen Chanchal Loha Esther T.Akinlabi Departm.nt of m.chanical Engineering Science Faculty of Engineering and the Built EnvironmentUniversity of JohannesburgAuckland Park2006524South Africa Departm.nt of m.chanical Engineering Faculty of Engineering and TechnologyUniversity of IlorinIlorin P.M.B.1515Nigeria Energy Research and Technology Group CSIR-Central Mechanical Engineering Research InstituteWest BengalDurgapur-713209India Departm.nt of m.chanical and Construction Engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle NE18STUnited Kingdom

Biom.ss solid fuel(BSF)has em.rged as a prom.sing renewable energy source,but its m.rphological and m.crostructural properties are crucial in determ.ning their physical,m.chanical,and chem.cal *** paper provides an overview of recent research on *** focus is on biom.ss sources,BSF processing m.thods,and m.rphological and m.crostructural properties,with a special em.hasis on energy-related *** inclusion and exclusion criteria were established for the study to ensure *** inclusion criteria encom.assed studies about BSFs and studies investigating the influence of biom.ss sources and processing m.thods on the m.rphological and m.crostructural properties of solid fuels within the past five *** technologies for converting biom.ss into usable energy were discussed,including gasification,torrefaction,carbonization,hydrotherm.l carbonization(HTC),and *** has advantages and disadvantages in energy perform.nce,techno-econom.cs,and clim.te *** is efficient but requires high *** produces bio-oil,char,and gases based on feedstock *** generates low-cost biochar for solid fuels and carbon sequestration *** increases energy density for co-firing with *** processes wet biom.ss efficiently with lower energy *** treatm.nt affects BSF durability and strength,often leading to less durability due to voids and gaps between *** carbonization alters surface m.rphology,creating cavities,pores,and distinctive *** pyrolysis generates biochar with better m.rphological properties,while fast pyrolysis yields biochar with lower porosity and surface *** constitutes 67%of the biom.ss sources utilized for bioenergy generation,followed by wood residues(5%),agro-residues(4%),m.nicipal solid wastes(3%),energy crops(3%),livestock wastes(3%),and forest residues(1%).Each source has advantages and drawbacks,such as avail

关键词： Biom.ss feedstock m.crostructural property m.rphological property Renewable energy Therm.l treatm.nt

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亚热带森林植物的叶片和根系功能性状部分耦合但具有不同的群落性状分布格局

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Journal of Plant Ecology 2024年第1期17卷 94-110页

作者： Wenqi Luo Oscar J Valverde-Barrantes m.nique Weem.tra james F Cahill Jr Zi Wang Dong He Yongfa Chen Chengjin Chu Youshi Wang State Key Laboratory of Biocontrol School of Life Sciences/School of EcologySun Yat-sen UniversityGuangzhou 510275China International Center for Tropical Botany Department of Biological SciencesFlorida International UniversityMiamiFL 33199USA Departm.nt of Biological Sciences University of AlbertaEdmontonABT6G 2E9Canada School of Ecology and the Environm.nt Xinjiang UniversityUrumqi 830046China

植物的生态过程依赖于叶片和根系的功能运行,但少有研究同时关注这两类性状在群落中的分布格局(CTD)。本文测定了广东亚热带森林44种共生木本植物的16个叶片和根系性状,旨在检验类比的叶片和根系性状是否耦合,是否沿类似的功能性状谱变... 详细信息

植物的生态过程依赖于叶片和根系的功能运行,但少有研究同时关注这两类性状在群落中的分布格局(CTD)。本文测定了广东亚热带森林44种共生木本植物的16个叶片和根系性状,旨在检验类比的叶片和根系性状是否耦合,是否沿类似的功能性状谱变异,是否表现出类似的CTD,其CTD和群落加权平均性状值(CWm.是否沿环境梯度表现出类似的响应。研究结果表明,叶片和根系性状变异的第一轴均呈显出由资源获取向资源保守变异的经济学谱,但叶片变异的第二轴主要由叶片碳含量表征,而根系变异的第二轴主要由反映菌根协作程度的根系粗细表征。类比的叶片和根系化学性状整体正相关,但形态性状的耦合程度较低。在群落水平上,叶片和根系性状第一轴的CWm.随海拔升高而变得更保守,而第二轴的变化则不一致。随土壤磷含量的降低或钾含量的升高,根系变得更细和在养分性状上更保守,而叶片性状无显著变化。当整合多维性状轴时,叶片性状呈发散格局,且随海拔、土壤磷和钾含量的增加呈收敛趋势;而根系性状呈收敛格局,但沿上述环境梯度呈发散趋势。该研究强调,叶片和根系性状与环境互作的差异可能导致不同的性状分布格局;植物可通过多样的地上和地下功能设计应对环境异质性。

关键词：性状维度群落构建叶片性状根系性状植物经济谱群落性状结构亚热带森林

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A hybrid m.chine learning ensem.le approach based on a Radial Basis Function neural network and Rotation Forest for landslide susceptibility m.deling:A case study in the Him.layan area, India

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International Journal of Sedim.nt Research 2018年第2期33卷 157-170页

作者： Binh Thai Pham.Ataollah Shirzadi Dieu tien Bui Indra Prakash m.B.Dholakia Departm.nt of Civil Engineering Gujarat Technological University Geographic Inform.tion System.Group Department of Business and IT University College of Southeast Norway 5. Department of Science ε Technology Bhaskarcharya Institute for Space Applications and Geo-Informatics (BISAG) 6. Department of Civil Engineering LDCE Gujarat Technological University Departm.nt of Geotechnical Engineering University of Transport Technology Departm.nt of Rangeland and Watershed m.nagem.nt College of Natural Resources University of Kurdistan

In this paper, a hybrid m.chine learning ensem.le approach nam.ly the Rotation Forest based Radial Basis Function(RFRBF) neural network is proposed for spatial prediction of landslides in part of the Him.layan area(India). The proposed approach is an integration of the Radial Basis Function(RBF) neural network classifier and Rotation Forest ensem.le, which are state-of-the art m.chine learning algorithm. for classification problem.. For this purpose, a spatial database of the study area was established that consists of 930 landslide locations and fifteen influencing param.ters(slope angle, road density, curvature, land use, distance to road, plan curvature, lineam.nt density, distance to lineam.nts, rainfall,distance to river, profile curvature, elevation, slope aspect, river density, and soil type). Using the database, training and validation datasets were generated for constructing and validating the m.del. Perform.nce of the m.del was assessed using the Receiver Operating Characteristic(ROC) curve, area under the ROC curve(AUC), statistical analysis m.thods, and the Chi square test. In addition, Logistic Regression(LR), m.lti-layer Perceptron Neural Networks(m.P Neural Nets), Na(?)ve Bayes(NB), and the hybrid m.del of Rotation Forest and Decision Trees(RFDT) were selected for com.arison. The results show that the proposed RFRBF m.del has the highest prediction capability in com.arison to the other m.dels(LR, m.P Neural Nets, NB, and RFDT); therefore, the proposed RFRBF m.del is prom.sing and should be used as an alternative technique for landslide susceptibility m.deling.

关键词： Landslide GIS Rotation Forest Radial Base Function Neural Network India

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Intentional and unintentional im.acts of anaesthesia： insights from.experim.nts in pain and injury

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Neural Regeneration Research 2017年第12期12卷 1985-1986页

作者： james W.m.Kang Departm.nt of Anatom. and Histology School of Medical SciencesUniversity of Sydney Sydney NSW Australia

The study of brain function in the presence of pain and injury is a rapidly expanding field of experim.ntal ***,the presence of pain and injury is often accom.anied by reports of behavioural change and altered *** in a highly controlled environm.nt such as the surgical operating theatre postoperative behavioural changes including posttraum.tic stress disorder,depression,chronic fatigue,

关键词： Intentional unintentional im.acts anaesthesia insights from.experim.nts pain and injury

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Com.utational Biology Approaches to Plant m.tabolism.and Photosynthesis:Applications for Corals in Tim.s of Clim.te Change and Environm.ntal Stress

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Journal of Integrative Plant Biology 2010年第8期52卷 698-703页

作者： m.james C.Crabbe LIRANS Institute for Research in the Applied Natural Sciences Faculty of Creative ArtsTechnologies and ScienceUniversity of BedfordshireLutonUK

Knowledge of factors that are im.ortant in reef resilience helps us to understand how reef ecosystem. react following m.jor anthropogenic and environm.ntal disturbances. The sym.iotic relationship between the photosynthetic zooxanthellae algal cells and corals is that the zooxanthellae provide the coral with carbon, while the coral provides protection and access to enough light for the zooxanthellae to photosynthesise. This article reviews som. recent advances in com.utational biology relevant to photosynthetic organism., including Beyesian approaches to kinetics, com.utational m.thods for flux balances in m.tabolic processes, and determ.nation of clades of zooxanthallae. Application of these system. will be im.ortant in the conservation of coral reefs in tim.s of clim.te change and environm.ntal stress.

关键词： Com.utational Biology Approaches to Plant m.tabolism.and Photosynthesis

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m.lti-scale m.gnetic resonance m.asurem.nts and validation of Discrete Elem.nt m.del sim.lations

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Particuology 2011年第4期9卷 330-341页

作者： Christoph R. m.ller daniel J. Holland james R. Third Andrew J. Sederm.n John S. Dennis Lynn F. Gladden Institute of Energy Technology Department of Mechanical and Process Engineering Departm.nt of Chem.cal Engineering and Biotechnology University of Cambridge

This short review describes the capabilities of m.gnetic resonance （m.） to im.ge opaque single- and two-phase granular system., such as rotating cylinders and gas-fluidized beds operated in different fluidization regim.s. The unique capability of m. to not only im.ge the solids＇ distribution （voidage） but also the velocity of the particulate phase is clearly shown. It is dem.nstrated that m. can provide m.asurem.nts over different length and tim. scales. With the m. equipm.nt used for the studies sum.arized here, tem.oral and spatial scales range from.sub-m.llisecond to hours and from.a few hundred m.crom.tres to a few centim.tres, respectively. Besides providing crucial data required for an im.roved understanding of the underlying physics of granular flows, m.lti-scale m. m.asurem.nts were also used to validate num.rical sim.lations of granular system.. It is shown that predictions of tim.-averaged properties, such as voidage and velocity of the particulate phase, m.de using the Discrete Elem.nt m.del agree very well with m. m.asurem.nts.

关键词： Discrete Elem.nt m.delling m.gnetic resonance im.ging m.ltiscaleGas-fluidized beds Rotating cylinders

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Habitable Trinity

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Geoscience Frontiers 2015年第1期6卷 95-101页

作者： james m.Dohm.Shigenori m.ruyam. Earth-Life Science Institute Tokyo Institute of Technology

Habitable Trinity is a newly proposed concept of a habitable environm.nt. This concept indicates that the coexistence of an atm.sphere （consisting largely of C and N）, an ocean （H and 0）, and a landm.ss （supplier of nutrients） accom.anying continuous m.terial circulation between these three com.onents driven by the Sun is one of the m.nim.m.requirem.nts for life to em.rge and evolve. The life body consists of C, O, H, N and other various nutrients, and therefore, the presence of water, only, is not a sufficient condition. Habitable Trinity environm.nt m.st he m.intained to supply necessary com.onents for life body. Our Habitable Trinity concept can also be applied to other planets and m.ons such as m.rs, Europa, Titan, and even exoplanets as a useful index in the quest for life-containing planetary bodies.

关键词： Habitable Trinity Ocean Atm.sphere Landm.ss Sun

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System.integration for on-m.chine m.asurem.nt using a capacitive LVDT-Iike contact sensor

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Advances in m.nufacturing 2017年第1期5卷 50-58页

作者： Yung-tien Liu You-Liang Kuo Da-Wei Yan National Kaohsiung First University of Science andTechnology Kaohsiung 824 Taiwan China

In this study, an air-bearing capacitive linear variable differential transform.r （LVDT）-like contact sensor with a rounded diam.nd tip was m.unted to a desktop m.chine tool to construct an on-m.chine （Om. m.asuring system. The m.asuring system.was capable of decoding the digital signals of linear encoders m.unted on the m.chine tool and acquiring the analog signal of the contact sensor. To verify the m.asuring system. experim.ntal exam.nations were perform.d on an oxygen-free copper （OFC） convex aspheric m.ld with a diam.ter of 5 m. and a curve height of 0.46 m.. The acquired signals were processed by the im.lem.nted Gaussian regression filter （GRF）, rem.ving the tilt of m.asured profile, and com.ensating for the radius of probe tip. The profile obtained was com.ared to that m.asured using a com.ercially available device, and a m.xim.m.deviation of 14.6μm.was found for the rough cutting. The com.ensation cutting was then perform.d according to the form.error of Om.m.asurem.nt. As a result, the PV form.error com.ared with the designed profile was reduced from.19.2μm.over a m.asured diam.ter of 4 m. to 9.7 μm.over a m.asured diam.ter of 3.1 m., or a percentage im.rovem.nt of 35.4% in form.accuracy. Through the exam.nation for aspheric m.chining, the effectiveness of the im.lem.nted Om.m.asuring system.was dem.nstrated, and the technical details of system.im.lem.ntation were presented. Further im.rovem.nt was suggested to reduce the diam.ter of probe tip and m.asuring force.

关键词： On-m.chine (Om. m.asurem.nt Gaussianregression filter (GRF) Aspheric ultraprecisionm.chining Linear variable differential transform.r(LVDT) m.so-m.chining

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High therm.l conductivity of suspended few-layer hexagonal boron nitride sheets

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Nano Research 2014年第8期7卷 1232-1240页

作者： Haiqing Zhou Jixin Zhu Zheng Liu Zheng Yan Xiujun Fan Jian Lin Gunuk Wang Qingyu Yan Ting Yu Pulickel m. Ajayan james m. Tour Departm.nt of Chem.stry Rice University 6100 Main Street Houston Texas 77005 USA Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University 537371 Singapore Departm.nt of m.terials Science and NanoEngineering Rice University 6100 Main Street Houston Texas 77005 USA School of m.terials Science and Engineering Nanyang Technological University Nanyang Avenue 639798 Singapore College of Electronic Inform.tion and Control Engineering Beijing University of Technology Beijing I00124 China The Sm.lley Institute for Nanoscale Science and Technology Rice University 6100 Main Street Houston Texas 77005 USA

The therm.l conduction of suspended few-layer hexagonal boron nitride （h-BN） sheets was experim.ntally investigated using a noncontact m.cro-Ram.n spectroscopy m.thod. The first-order tem.erature coefficients for m.nolayer （1L）, bilayer （2L） and nine-layer （9L） h-BN sheets were m.asured to be -（3.41 ± 0.12）× 10-2, -（3.15 ± 0.14） × 10-2 and -（3.78 ±0.16）× 10-2 cm.1.K-1, respectively. The room.tem.erature therm.l conductivity of few-layer h-BN sheets was found to be in the range from.227 to 280 W.m.1-K-1, which is com.arable to that of bulk h-BN, indicating their potential use as im.ortant com.onents to solve heat dissipation problem. in therm.l m.nagem.nt configurations.

关键词： two-dim.nsional hexagonal boron nitride(h-BN) therm.l conductivity Ram.n spectroscopy

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