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Trade-offs between ecosystem service provision and the predisposition to disturbances: a NFI-based scenario analysis

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Forest Ecosystems 2020年第3期7卷 349-365页

作者： Christian Temperli Clemens Blattert Golo Stadelmann Urs-Beat Brändli Esther thürig Swiss Federal Institute for Forest Snow and Landscape Research WSL8903BirmensdorfSwitzerland University of Jyväskylä FI-40014JyväskyläFinland

Background: Scenario analyses that evaluate management effects on the long-term provision and sustainability of forest ecosystem services and biodiversity(ESB) also need to account for disturbances. the objectives of this study were to reveal potential trade-offs and synergies between ESB provision and disturbance predisposition at the scale of a whole ***: the empirical scenario model MASSIMO was used to simulate forest development and management from years 2016 to 2106 on 5086 sample plots of the Swiss National Forest Inventory(NFI). We included a businessas-usual(BAU) scenario and four scenarios of increased timber harvesting. Model output was evaluated with indicators for 1) ESB provision including a) timber production, b) old-growth forest characteristics as biodiversity proxies and c) protection against rockfall and avalanches and 2) for a) storm and b) bark beetle ***: the predisposition indicators corresponded well(AUC: 0.71–0.86) to storm and insect(mostly bark beetle)damage observations in logistic regression models. Increased timber production was generally accompanied with decreased predisposition(storm: >-11%, beetle: >-37%, depending on region and scenario), except for a scenario that promoted conifers where beetle predisposition increased(e.g. + 61% in the Southern Alps). Decreased disturbance predisposition and decreases in old-growth forest indicators in scenarios of increased timber production revealed a trade-off situation. In contrast, growing stock increased under BAU management along with a reduction in conifer proportions, resulting in a reduction of beetle predisposition that in turn was accompanied by increasing old-growth forest indicators. Disturbance predisposition was elevated in NFI plots with high avalanche and rockfall protection ***: By evaluating ESB and disturbance predisposition based on single-tree data at a national scale we bridged a gap between detailed, stand-scale assessments and

关键词： Disturbance Ecosystem services Empirical model Forest inventory Scenario analysis

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Potential generated by a massive inhomogeneous straight segment

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Research in Astronomy and Astrophysics 2011年第3期11卷 345-352页

作者： Nour-Eddine Najid el Haj elourabi Mohamed Zegoumou Equipe Mécanique Statistique et Astronomie-Laboratoire de Physique théorique et Appliquée Université Hassan Ⅱ Ain Chock-Faculté des Sciences Ain Chock BP 5366 Maarif Casablanca Morocco

the discoveries of binary asteroids have opened an important new field of research concerning the calculation of potential generated by irregular *** of them have an elongated shape.A simple model to describe the motion of a test particle in that kind of potential requires consideration of a finite homogeneous straight *** construct this model by adding an inhomogeneous distribution of mass. To be consistent with the geometrical shape of the asteroid,we explore a parabolic profile of the *** establish the closed analytical form of the potential generated by this inhomogeneous massive *** study of the dynamical behavior is fulfilled by the use of Lagrangian formulation,which allows us to calculate some two and three dimensional orbits.

关键词： asteroids—potential—inhomogeneous distribution

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Experimental Study on Deoxidization of Bariumand Barium Alloy

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Journal of Materials Science & Technology 1999年第5期15卷 400-404页

作者： Shi, YF Chen, BP Fu, J el Gammal, T Univ Sci & Technol Beijing Met Sch Beijing 100083 Peoples R China Rhein Westfal th Aachen Inst Eisenhuttenkunde Aachen Germany

Based on the review of latest papers related to the application of barium alloy, the deoxidization effects of barium and barium alloy, and the dynamic characteristics of molten bath have been systematically studied by means of the convection free bath, natural convection bath, air and vacuum induction melting experiments. It was found that both the total oxygen content and soluble oxygen content in molten bath decreased rapidly. the results obtained provided practical and theoretical basis for further synthetic applications of barium alloy in metallurgical industry.

关键词： Barium

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the Challenging Place of Natural Hazards in Disaster Risk Reduction Conceptual Models:Insights from Central Africa and the European Alps

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International Journal of Disaster Risk Science 2020年第3期11卷 316-332页

作者： Caroline michellier Patrick Pigeon André Paillet théodore Trefon Olivier Dewitte Francois Kervyn Natural Hazards Service Royal Museum for Central Africa3080 TervurenBelgium EDYTEM Laboratory Universite de Savoie-Mont-Blanc73376 Le Bourget du lacFrance Geodynamics and Mineral Resources Service Royal Museum for Central Africa3080 TervurenBelgium

Based on a literature review and two case studies,this article presents the difficulties inherent in the main disaster risk reduction conceptual *** method used to highlight such evidence is to compare two programs on disaster risk reduction with mainstream conceptual *** authors participated in these programs,which were confronted with the need to integrate contributions and insights from both earth and social *** analysis found that the existing main conceptual models were unable to do justice to disaster risk reduction *** finding encouraged us to critique these *** effort led us to present possible solutions to compensate for the shortcomings of current models while taking into account the contextualization and dynamics of phenomena,as well as grappling with the more explicit integration of hazards and hazard risk into model design.

关键词： Central Africa Conceptual models Disaster risk reduction Natural hazards Northern French Alps

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Epidemiology and inflammatory bowel diseases

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World Journal of Gastroenterology 2013年第10期19卷 1505-1507页

作者： Ahmed Mahmoud el-Tawil Department of Surgery University Hospital BirminghamEast CorridorGround FloorBirmingham B15 2THUnited Kingdom

the role of alcohol in causing or aggravating the pathogenesis of inflammatory bowel disease is *** finding a conclusive answer for this valuable question we conducted this *** two studies were identified that successfully fulfilled our inclusive *** consumption of alcohol reduced the risk compared with less frequent use(odds ratio = 0.57,95%CI:0.37-0.86).Light alcoholic drinking has protective effects against development of ulcerative *** this inverse association disappeared when smoking was included.

关键词： Epidemiology Inflammatory bowel diseases Crohn’s diseases Ulcerative colitis Alcohol

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Smart prediction of liquefaction-induced lateral spreading

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第6期16卷 2310-2325页

作者： Muhammad Nouman Amjad Raja Tarek Abdoun Waleed el-Sekelly New York University(NYU)Abu Dhabi Abu Dhabi129188United Arab Emirates University of Management and Technology Lahore54372Pakistan Department of Civil and Environmental Eng. Rensselaer Polytechnic Institute(RPI)1108th StreetJEC 4049TroyNY12180USA Department of Structural Engineering Mansoura UniversityMansoura35516Egypt

the prediction of liquefaction-induced lateral spreading/displacement(Dh)is a challenging task for civil/geotechnical *** this study,a new approach is proposed to predict Dh using gene expression programming(GEP).Based on statistical reasoning,individual models were developed for two topographies:free-face and gently sloping *** with a comparison with conventional approaches for predicting the Dh,four additional regression-based soft computing models,*** process regression(GPR),relevance vector machine(RVM),sequential minimal optimization regression(SMOR),and M5-tree,were developed and compared with the GEP *** results indicate that the GEP models predict Dh with less bias,as evidenced by the root mean square error(RMSE)and mean absolute error(MAE)for training(i.e.1.092 and 0.815;and 0.643 and 0.526)and for testing(i.e.0.89 and 0.705;and 0.773 and 0.573)in free-face and gently sloping ground topographies,*** overall performance for the free-face topology was ranked as follows:GEP>RVM>M5-tree>GPR>SMOR,with a total score of 40,32,24,15,and 10,*** the gently sloping condition,the performance was ranked as follows:GEP>RVM>GPR>M5-tree>SMOR with a total score of 40,32,21,19,and 8,***,the results of the sensitivity analysis showed that for both free-face and gently sloping ground,the liquefiable layer thickness(T_(15))was the major parameter with percentage deterioration(%D)value of 99.15 and 90.72,respectively.

关键词： Lateral spreading Intelligent modeling Gene expression programming(GEP) Closed-form solution Feature importance

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Iterative signal reconstruction of deliberately clipped SMT signals

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Science China(Information Sciences) 2014年第2期57卷 5-17页

作者： KOLLR Zsolt GAZDA Juraj HORVth Pter VARGA Lajos KOCUR Duan Budapest University of Technology and Economics Technical University of Koice

Staggered MultiTone(SMT)is a modulation technique showing significantly reduced Adjacent Channel Leakage Ratio(ACLR)resulting in a more compact Power Spectrum Density(PSD)for the transmitted signal,than the well-known and already widely adopted Orthogonal Frequency Division Multiple Access(OFDMA)***,the unique spectral properties of an SMT signal could be degraded by a non-linear element(e.g.a Power Amplifier(PA))in the *** baseband clipping can be applied to the transmitted signal,reducing the notable high Peak-to-Average Power Ratio(PAPR).the objective of this paper is to give a brief introduction to the SMT scheme,with a special emphasis on deliberate clipping efects and their *** paper introduces two receiver-oriented iterative methods aiming at the restoration of the baseband Bit Error Rate(BER)performance of a non-clipped *** methods are evaluated and compared based on numerical *** paper concludes with the selection of a possible candidate for use in systems applying deliberately clipped SMT signals.

关键词： clipping SMT iterative decoding nonlinear distortion PAPR

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Evolutionary history and phylogeography of Scots pine (Pinus sylvestris L.) in Europe based on molecular markers

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Journal of Forestry Research 2017年第4期28卷 637-651页

作者： Endre Gy. To′th Zolta′n A. Kobolkuti Andrzej Pedryc Ma′ria Hohn Department of Botany Szent Istva′n University Me′nesi u′t 44Budapest 1118 Hungary Department of Genetics and Plant Breeding Szent Istva′n UniversityMe′nesi u′t 44Budapest 1118Hungary

In this review we summarized recent historical records and molecular studies on evolutionary history and phylogeography of Scots pine with focus on the European highly fragmented distribution area of the species. Fossilized pollen, plant micro- and macrofossil records provided evidences on the large-scale species’ range shifts and demographic changes during the Quaternary. Populations of Scots pine were documented both in the glacial (incl. full glaciation) and interglacial periods. Recolonization of Europe after the glaciation originated from the (Sub) Mediterranean areas like the Balkan Peninsula but also from around the Eastern Alps and the surroundings of the Danube plain. Fennoscandia and northern European Baltic regions were most probably colonized from two main directions, from Western Europe and from the Russian Plain. Modern history of Scots pine was hardly affected by anthropogenic activities that started to strengthen in the Bronze and Iron Age. Along with the fossil records, molecular genetic tools were used to infer the origin and putative history including migration, differentiation and demography of the species. In this paper we compiled the major publications (30) of molecular genetic studies of the past 20 years derived from distinctly inherited organelle genomes (mitochondrial, chloroplast, nuclear) revealed by different marker systems (mtDNA-cox1, -nad1, -nad3, -nad7, ISSR, cpSSR, nSSR, B-SAP, SNP). It is important to consider that different phylogeographic patterns can be drawn by the analysis of different DNA marker types. Accordingly the use of more than one marker simultaneously outlines the most sophisticated phylogeographical pattern on the genetic lineages and can reveal high differentiation of the European distribution. Combined marker systems and markers derived from coding sequences have also been used to detect species’ phylogeographic patterns, but these were rarely applied to Scots pine. Although new molecular techniques can provide h

关键词： Molecular genetic markers Phylogeography Pinus sylvestris Quaternary history Refugia

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Depositional Environment,Petrophysical Evaluation and electrical Properties of Zeit Formation,Northwestern Shore of Gulf of Suez,Egypt

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Journal of Earth Science 2024年第5期35卷 1720-1737页

作者： Mohamed M.Gomaa Emad A.Abd el Aziz Geophysical Sciences Department National Research CentreEl-Behoos St.DokkiCairo 12622Egypt

the Zeit sand reservoir is one of the most prolific formations at Northwestern side of the Gulf of *** this research we will try to coordinate between electrical,petrophysical properties,depositional environment and facies discrimination in order to evaluate the hydrocarbon potentiality of studied Zeit *** statistical parameters for potassium(K),thorium(th)and th/U ratio contents have a general increase towards northwestern parts,whereas uranium(U)content has a general increase towards southeastern *** sandstone facies is distinguished from the other facies by its thorium content>4 ppm.U has high carbonate content(U≥1 ppm).Rocks'electrical properties vary greatly depending on a number of *** measurements were taken at frequencies range of(5×10^(-4)Hz-100 kHz)for fully saturated samples(clayey sandstone)with NaCl(20 gm/L).As salinity,clay content,and frequency increase,consequently does the electrical *** continental condition are present in northwestern part(back-sea)which is distinguished by high K percent,high th,high th/U ratio,and low U *** K,th,and th/U ratio contents,with high U contents,characterize the marine depositional environment that existed around the east and southeastern parts(foresea coincide with the dipping of strata).Furthermore,the studied Zeit Formation has good petrophysical properties that coincide with marine *** middle and eastern parts(around ISS-94 and CSS-288)is a good reservoir(porosity 36%-39%,shale contentthickness 17-63 feet).

关键词： Zeit Formation petrophysical evaluation depositional environment Spectral Gamma Ray electrical properties gulf of Suez sedimentology

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Spectrofluorimetric and Spectrophotometric Stability- Iwndicating Methods for the Analysis of Veralipride in Presence of Its Degradants and in Spiked Human Plasma

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Chinese Journal of Chemistry 2012年第1期30卷 183-189页

作者： Salama,Nahla Nour el Din Ahmed Salem,Maissa Yacoub Abd el Halim,Lobna Mohammed Abdel Fattah,Laila EI-Sayed National Organization for Drug Control and Research(NODCAR) 6 Abu Hazem StreetPyramids AveP.O.Box 29GizaEgypt Analytical Chemistry Department Faculty of PharmacyCairo UniversityCairoEgypt Analytical Chemistry Department Faculty of PharmacyMisr University for Science and Technology6th of OctoberEgypt

Spectrofluorimetric and spectrophotometric stability-indicating methods were developed and validated for analysis of veralipride （Ver） in presence of its hydrolytic and oxidative degradants. the spectrofluorimetric method was based on direct measurement of the intrinsic fluorescence of Ver at 366 nm after excitation at 299 nm using sodium lauryl sulfate （SLS） as micelle enhancer. the fluorescence intensity plot was linear over the concentration range 1.0-10.0 ***-1. the high sensitivity of the method allowed its successful application to the analysis of Ver in spiked human plasma. Two other methods were developed. they are based on the oxidative coupling reac- tion of Vet with 3-methyl benzothiazolin-2-one hydrazone （MBth） hydrochloride in presence of ceric ammonium sulphate in an acidic medium. the first method depends on spectrophotometric measurement of the stable green colored oxidative coupling product at 660 nm. the different experimental parameters affecting the reaction were optimized. Linearity range is 10.0--100.0 ~tgomL-1. the second method depends on a fluorescence quenching effect of Vet on the fluorescence of Ce3＋. the difference in fluorescence intensity was measured at 380 nm after excitation at 300 nm. this method is applicable over the concentration ranges 0.25-2.50 pg-mL-1. the methods were validated according to the ICH guidelines. they were successfully applied for the analysis of Ver in drug substance, drug product and in laboratory prepared mixtures containing different percentages of hydrolytic and oxidative degradants.

关键词： veralipride micelle-enhanced fluorescence MBth validation stability fluorescence quenching Ce3+

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