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Accuracy of tree mapping based on hand-held laser scanning comparing leaf-on and leaf-off conditions in mixed forests

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Journal of Forestry Research 2024年第5期35卷 14-25页

作者： Frederico Tupinambá-Simões Adrián Pascual Juan Guerra-Hernández cristóbal Ordóñez Tiago de Conto Felipe Bravo iuFOR Sustainable Forest Management Research InstituteUniversity of Valladolid&INIAValladolidSpain Department of Geographical Sciences University of MarylandCollege ParkMD 20742USA Forest Research Centre School of AgricultureUniversity of LisbonTapada da Ajuda1349‑017 LisbonPortugal

The use of mobile laser scanning to survey forest ecosystems is a promising,scalable technology to describe forest 3D structures at high *** confirm the con-sistency in the retrieval of forest structural parameters using hand-held laser scanning(HLS),before operationalizing the method,confirming the data is *** analyzed the per-formance of tree-level mapping based on HLS under differ-ent phenology conditions on a mixed forest in western Spain comprising Pinus pinaster and two deciduous species,Alnus glutinosa and Quercus *** area was surveyed twice during the growing season(July 2022)and once in the deciduous season(February 2022)using several scan-ning *** reference data(418 trees,15 snags)was used to calibrate the HLS data and to assess the influence of phenology when converting 3D data into tree-level attrib-utes(DBH,height and volume).The HLS-based workflow was robust at isolating tree positions and recognizing stems despite changes in ***-six percent of all pairs matched below 65 *** DBH,phenology barely altered *** observed a strong agreement when comparing HLS-based tree height *** values exceeded 2 m when comparing height measurements,confirming height data should be carefully used as reference in remote sensing-based inventories,especially for deciduous *** volume was more precise for pines(r=0.95,and rela-tive RMSE=21.3–23.8%)compared to deciduous species(r=0.91–0.96,and relative RMSE=27.3–30.5%).HLS data and the forest structural complexity tool performed remark-ably,especially in tree positioning considering mixed forests and mixed phenology conditions.

关键词： Precision forestry Forest monitoring Mobile laser scanning Forest inventory

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Local Phase Portraits through the Newton Diagram of a Vector Field

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Acta Mathematica Sinica,English Series 2015年第6期31卷 1015-1034页

作者： Antonio ALGABA Isabel CHECA cristóbal GARCIA Manuel REYES Department of Mathematics Faculty of Experimental Sciences

The Newton diagram and, in particular, the lowest-degree quasi-homogeneous terms of an analytic planar vector field allow us to determine the existence of characteristic orbits and separatrices of an isolated singular point. We give an easy algorithm for obtaining the local phase portrait near the origin of a bi-dimensional differential system and we provide several examples.

关键词： Monodromy separatrices phase portraits quasi-homogeneous vector field

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Schistosomiasis and the Philippine campaign

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Asian Pacific Journal of Tropical Medicine 2008年第2期1卷 41-60页

作者： cristóbal S.Berry-Cabá Womack Army Medical Center WAMC/IMD/Clinical Data Team Fort BraggNC 28310-5000

Schistosomiasis is an infection with one of a series of related trematode parasites that are endemic to at least 76 tropical and subtropical *** affects over 200 million people in tropical and subtropical regions of South America,Africa and *** paper reported more than 1500 soldiers of US troops and 560 men of Australian Air Force were affected schistosomiasis japonicum in the Leyte of the Philippines during the liberation of the Philippines from Octorber 1944 to the early months of *** troops there were affected by contaminated water with snail *** first,the medical corps knew little about the situations of the schistosomiasis japonica in the Leyte,no preventive measure was *** December 23,1944 CPT morris Goldberg discovered schistosomes first from the hospitalized soldiers while conducting a liver *** soldiers with markedly signs and symptoms were admitted to hospital for *** measure was taken *** US sent a lot of experts to Philippines for the research of schistosomiasis japonicum,including epidemiology, prevention,diagnosis,treatment and so *** chemicals were used to control snail hosts. In clinical,schistosomiasis has acute and chronic stages,the manifestations are plenty and various,the liver, intestine,veins,spleen and skin etc are common sites of *** extensive educational program was carried out in the troops through different means,which yielded remarkable effect,the new incidence of schistosomiasis *** hospitalized soldiers were a few,but there were scare and some morale and psychological problems among them and the other affected victims,they worried about their prognoses or being infected. Some patients were evacuated to United States for treatment after diagnosis,some patients were treated in *** World WarⅡ,schistosomiasis was treated generally with trivalent antimony compounds,Fuadin and tartar *** this event,no case died,relapses w

关键词： schistosomiasis epidemiology prevention treatment troop United States Leyte

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Physico-chemical properties of 3-methoxy-2-nitrobenzoates of some rare earth elements(Ⅲ)

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Journal of Rare Earths 2012年第3期30卷 262-268页

作者： Wiesawa Ferenc Beata cristóvao Jan Sarzyński Halina Guchowska Faculty of Chemistry Maria Curie-Skodowska University Institute of Physics Maria Curie-Skodowska University

The complexes of 3-methoxy-2-nitrobenzoates of Pr（Ⅲ）, Nd（Ⅲ）, Sm（Ⅲ）, Eu（Ⅲ）, Gd（Ⅲ）, Tb（Ⅲ）, Er（Ⅲ） and Tm（Ⅲ） with the formula： Ln（C8H6NO5）3·2H2O, where Ln=lanthanides（Ⅲ）, were synthesized and characterized by elemental analysis, Forier transform irtrared （FTIR） spectroscopy, magnetic and thermogravimetric studies and also by X-ray diffraction （XRD） measurements. The complexes had col- ours typical for Ln（Ⅲ） ions. The carboxylate groups bound as bidentate chelating. On heating to 1173 K in air they decomposed in the same way, at first, dehydrated in one step to anhydrous salts, and then decomposed to the oxides of respective metals with intermediate formation of the oxycarbonates. The enthalpy values of the dehydration process changed from 133.72 to 44.50 kJ/mol. Their solubility in water at 293 K was of the order of 10-4 mol/dm3. The magnetic moments of analysed complexes were determined by Gouy＇s method in the range of 76-303 K.

关键词： 3-methoxy-2-nitrobenzoates thermal stability magnetic properties rare earths

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Phase-field modeling of fracture for quasi-brittle materials

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Underground Space 2019年第1期4卷 10-21页

作者： Jacinto Ulloa Patricio Rodríguez cristóbal Samaniego Esteban Samaniego Department of Civil Engineering Katholieke Universiteit LeuvenB-3001 LeuvenBelgium Departamento de Recursos Hídricos y Ciencias Ambientales Universidad de CuencaCuenca 010151Ecuador Universidad de Cuenca Cuenca 010151Ecuador Institut für Kontinuumsmechanik Leibniz Universität HannoverHannover 30167Germany Inria Bordeaux-Sud-Ouest Research Center 200 Avenue de la Vieille TourTalence 33405France Facultad de Ingeniería Universidad de CuencaEcuador

This paper addresses the modeling of fracture in quasi-brittle materials using a phase-field approach to the description of crack *** the computational mechanics community,several studies have treated the issue of modeling fracture using phase *** of these studies have used an approach that implies the lack of a damage *** herein explore an alternative model that includes a damage threshold and study how it compares with the most popular *** formulation is systematically explained within a rigorous variational ***,we present the corresponding three-dimensional finite element discretization that leads to a straightforward numerical *** simulations in two dimensions and three dimensions are then *** results show that while an elastic stage and a damage threshold are ensured by the present model,good agreement with the results reported in the literature can be obtained,where such features are generally absent.

关键词： Quasi-brittle materials Fracture Variational formulation Phase fields Gradient damage

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Determination of the ground vibration attenuation law from a singleblast: A particular case of trench blasting

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Journal of Rock Mechanics and Geotechnical Engineering 2021年第5期13卷 1182-1192页

作者： Rafael Rodríguez Laura García de Marina Marc Bascompta cristóbal Lombardía Department of Mining Exploitation and Prospecting School of MiningEnergy and Materials EngineeringUniversity of OviedoIndependencia 13Oviedo33004Spain Department of Mining Industrial and ICT EngineeringPolytechnic University of Catalonia(UPC)ManresaAv.Bases de Manresa61-73Barcelona08242Spain Perforaciones Noroeste S.A Longoria Carbajal No.3Oviedo33004Spain

The general transmissivity law of ground vibrations was studied,and a user-friendly methodology for determining the behavior of vibrations generated in any rock mass is *** study was based on a single blast in a trench excavation,analyzing the vibration components recorded from two fixed *** attenuation law and the main variables according to the legal requirements,frequency and peak particle velocity(PPV),are defined with this novel method,achieving a high confidence level in a simple *** proposed approach can also have an important impact in terms of reducing the potential consequences of vibrations for the surrounding construction and achieving the required definition of rock *** the cost and time in many projects where blasting techniques are applied is particularly useful for the design of future blasts.

关键词： Empirical analysis Blasting Ground vibration Trenching Wave propagation

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Boron in Plants: Deficiency and Toxicity

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Journal of Integrative Plant Biology 2008年第10期50卷 1247-1255页

作者： Juan J. Camacho-cristóbal Jesús Rexach Agustín Gonzlez-Fontes Departamento de Fisiología Anatomía y Biología Celular Facultad de Ciencias Experimentales Universidad Pablo de OlavideE-41013 Sevilla Spain

Boron （B） is an essential nutrient for normal growth of higher plants, and B availability in soil and irrigation water is an important determinant of agricultural production. To date, a primordial function of B is undoubtedly its structural role in the ceil wall; however, there is increasing evidence for a possible role of B in other processes such as the maintenance of plasma membrane function and several metabolic pathways. In recent years, the knowledge of the molecular basis of B deficiency and toxicity responses in plants has advanced greatly. The aim of this review is to provide an update on recent findings related to these topics, which can contribute to a better understanding of the role of B in plants.

关键词： boron-binding molecules boron transporter cell wall-related genes gene expression nitrogen metabolism,

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Red pigment production by Penicillium purpurogenum GH2 is influenced by pH and temperature

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2011年第12期12卷 961-968页

作者： Alejandro MéNDEZ Catalina PéREZ Julio Cesar MONTAéZ Gabriela MARTíNEZ cristóbal Noé AGUILAR Department of Food Science and Technology School of Chemistry Universidad Autónoma de Coahuila Saltillo 25280 Coahuila Mexico Department of Organic Chemistry School of Chemistry Universidad Autónoma de Coahuila Saltillo 25280 Coahuila Mexico Department of Chemical Engineering School of Chemistry Universidad Autónoma de Coahuila Saltillo 25280 Coahuila Mexico

The combined effects of pH and temperature on red pigment production and fungal morphology were evaluated in a submerged culture of Penicillium purpurogenum GH2, using Czapek-Dox media with D-xylose as a carbon source. An experimental design with a factorial fix was used: three pH values (5, 7, and 9) and two temperature levels (24 and 34 °C) were evaluated. The highest production of red pigment (2.46 g/L) was reached with a pH value of 5 and a temperature of 24 °C. Biomass and red pigment production were not directly associated. This study demon- strates that P. purpurogenum GH2 produces a pigment of potential interest to the food industry. It also shows the feasibility of producing and obtaining natural water-soluble pigments for potential use in food industries. A strong combined effect (p0.05) of pH and temperature was associated with maximal red pigment production (2.46 g/L).

关键词： Penicillium purpurogenum Food colorants Combined effects Water-soluble pigment

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Educating for Comprehensive Well-being

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ECNU Review of Education 2020年第3期3卷 406-436页

作者： Stanton Wortham Renata Love-Jones William Peters Stacy Morris Juan cristòbal García-Huidobro Lynch School of Education and Human Development Boston College

Purpose:Educational approaches that advocate“well-being,”the“whole child,”“social and emotional learning,”“character,”and the like emphasize human development beyond the acquisition of knowledge and *** approaches vary widely in their views of human nature,their visions of a good life,and their prescriptions for educational *** article maps out heterogeneous contemporary approaches to“well-being”and related constructs,thereby allowing researchers,educators,and policymakers to understand the divergent assumptions made by the proliferating approaches to education that go beyond ***/Approach/Methods:This article presents results from a 2-year project,which included interviews with advocates of different approaches and review of key literature about eleven educational approaches to“well-being,”the“whole child,”“social and emotional learning,”“character,”and similar noncognitive ***:The article argues that any educational approach to“well-being”and related constructs must respond to four questions:whether humans are bundles of discrete competencies or integrated wholes,what the appropriate relation is between individuals and society,the relative importance of instrumental and intrinsic goals,and the importance of an overarching purpose for one’s *** analysis reviews how eleven contemporary approaches address these four ***/Value:Despite the global proliferation of divergent approaches to“well-being,”the“whole child,”“social and emotional learning,”“character,”and related constructs in education,there are no comprehensive frameworks for understanding the alternatives and their key *** article organizes the globally proliferating educational movements that promote“well-being,”making sense of a confusing set of *** also argue that any comprehensive approach to education that goes beyond academics must consider the four questions that we identify.

关键词： Character education educational policy social emotional learning well-being whole person

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Hybrids of gold nanoparticles and oligo(p-phenyleneethynylene)s end-functionalized with alkynylruthenium groups:Outstanding two-photon absorption in the second biological window

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Nano Research 2020年第10期13卷 2755-2762页

作者： cristóbal Quintana Mahbod Morshedi Jun Du Joseph P.L.Morrall Jan K.Zaręba Marek Samoc Marie P.Cifuentes Mark G.Humphrey I Research School of Chemistry Australian National UnriversityCanberraACT 2601Australia Advanced Materials Engineering and Modelling Group Wroclaw University of Science and TechnologyWroclaw 50370Poland

Oligo(p-phenyleneethynylene)s(OPEs)end-capped with(alkynyl)bis(diphosphine)ruthenium and thiol/thiolate groups stabilize ca.2 nm diameter gold nanoparticles(AuNPs).The morphology,elemental composition and stability of the resultant organometallic OPE/AuNP hybrid materials have been defined using a combination of molecular-and nano-material chacterization *** hybrids display long-term stability in solution(more than a month),good solubility in organic solvents,reversible rutheniumcentered oxidation,and transparency beyond 800 nm,and possess very strong nonlinear absorption activity at the first biological window,and unprecedented two-photon absorption activity in the second biological window(σ2 up to 38,000 GM at 1,050 nm).

关键词： gold nanoparticles inorganic materials metal alkynyl complexes nonlinear optics organometallics

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