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Physiological plasticity in eucalyptus clones in the vegetative stage contributes to drought tolerance

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Journal of Forestry Research 2023年第5期34卷 1549-1561页

作者： Vilma Marques Ferreira Jailma Ribeiro de Andrade Claudiana Moura dos santos sebastiao de Oliveira Maia Júnior Joao Correia de Araújo Neto Andrea Francisca da silva santos Vicente Mota da silva Lucas Teles Bezerra laur.cio Endres Laboratório de Fisiologia Vegetal Campus de Engenharia e Ciências AgráriasUniversidade Federal de AlagoasRio LargoAL57072-900Brazil Laboratório de Ciências Ambientais e Biodiversidade Departamento de Zootecnia.Centro de Ciências AgráriasUniversidade Estadual do MaranhãoSão LuísMA65300-000Brazil Laboratório de Propagação de Plantas.Campus de Engenharia e Ciências Agrárias Universidade Federal de AlagoasRio LargoAL57072-900Brazil Laboratório de Lepidoptera Museu de ZoologiaUniversidade de São PauloIpirangaSão PauloSP04263-000Brazil

With the expansion of eucalyptus crops to areas with severe water limitations,physiological studies involving eucalyptus clones to identify those that are tolerant to water stress become *** objective of this study was to assess morphological and physiological responses by eucalyptus clones subjected to drought stress and *** experiment consisted of three eucalyptus clones:VC865,I224 and I144 and two water regimes:control and water stress followed by rehydration,with six *** water potential,gas exchange,maximum quantum efficiency of photo systemⅡand plant height and stem diameter were evaluated under drought stress and ***6 d of rehydration,the number of leaves,leaf area and dry mass of root,leaf,stem and their total were *** clones showed intense reduction of gas exchange during the drought stress period,and only VC865 and 1144 showed rapid recovery with 3 d of *** 1224 showed greater reduction in height,stem diameter,number of leaves,water potential at midday(Ψ_(w)_(Midday)),and maximum quantum efficiency of photosystemⅡ(F_(v)/F_(m)).Clones VC865and T144 showed lower reductions inΨ_(wMidday)and F_(v)/F_(m) under ***865 had lower reductions in leaf number,leaf area and higher leaf dry mass,while clone I144 had higher height and lower reduction in root dry mass *** these clones showed higher water use efficiency with 3d of *** different phenotypic plasticities gave the clones VC865 and 1144 efficient mechanisms of acclimatization to stress and more drought tolerance,enhancing their greater capacity for recovery after stress,which allowed lower dry mass *** 1224,however,was more susceptible to drought stress,undergoing greater physiological damage with only partial recovery during rehydration.

关键词： Drought Eucalyptus species Gas exchanges Post-stress Root dry mass

Mesophyll thickness and sclerophylly among Calotropis procera morphotypes reveal water-saved adaptation to environments

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Journal of Arid Land 2019年第6期11卷 795-810页

作者： Marcelo F POMPELLI Keila R MENDEs Marcio V RAMOs Jose N B sANTOs Diaa T A YOUssEF Jaqueline D PEREIRA laur.cio ENDREs Alfredo JARMA-OROZCO Rodolfo sOLANO-GOMEs Betty JARMA-ARROYO Andre L J sILVA Marcos A sANTOs Werner C ANTUNEs Plant Physiology Laboratory Department of BotanyFederal University of PernambucoRecife 50670901Brazil Department of Biochemistry and Molecular Biology Federal University of CearáFortaleza 60020603Brazil Department of Natural Products Faculty of PharmacyKing Abdulaziz UniversityJeddah 21589Saudi Arabia Institute of Botany Federal University of ViçosaRio Paranaíba CampusRio Paranaiba 36570900Brazil Plant Ecophysiology Laboratory Federal University of AlagoasMaceio 57072900Brazil Faculty of Agricultural science University of CórdobaMontería 230002Colombia Instituto Politécnico Nacional Research Interdisciplinary Center for Integrated Rural DevelopmentSanta Cruz XoxocotlanOaxaca 7738Mexico Department of Biology University of MaringáMaringá87020900Brazil

Calotropis procera(Aiton)Dryand(Apocynaceae)is a native species in tropical and subtropical Africa and ***,due to its fast growing and drought-tolerant,it has become an invasive species when it was introduced into Central and south America,as well as the Caribbean ***,*** displays a wide distribution in the *** is important,in particular,because many invasive species exert a high reproductive pressure on the invaded communities or are highly productive in their new distributed *** has been suggested that a very deep root system and a high capacity to reduce stomatal conductance during water shortage could allow this species to maintain the water status required for a normal ***,the true mechanism behind the successful distribution of *** across wet and dry environments is still *** leaves were collected from 12 natural populations in Brazil,Colombia and Mexico,ranging from wet to dry environments during 2014–*** traits of morphology and anatomy from these distinct morphotypes were *** found that *** leaves had a considerable capacity to adjust their morphological,anatomical and physiological traits to different *** magnitude of acclimation responses,i.e.,plasticity,had been hypothesized to reflect the specialized adaptation of plant species to a particular ***,allometric models for leaf area(LA)estimation cannot be grouped as a single *** are narrower and thicker with low amounts of air spaces inside the leaf parenchyma in wet environments,while they are broader and thinner with a small number of palisade cell layers in dry *** on these,we argue that broader and thinner leaves of *** dissipate incident energy at the expense of a higher rate of transpiration to survive in environments in which water is the most limiting factor and to compete in favorable wet environments.

关键词： invasive plant energy budget leaf anatomy morphological trait specific leaf area

The attack on November 13,2015:organisation of the medico-judicial unit of the Hotel-Dieu Hospital in Paris

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Forensic sciences Research 2020年第3期5卷 232-235页

作者： Nicolas soussy laur.ne Dufayet Caroline Rey-salmon Charlotte Gorgiard Medico-Judicial Unit Hopital Hotel-Dieu de ParisAPHPParisFrance Centre AntiPoison et de Toxicovigilance Hopital Fernand WidalAPHPParisFrance

The main aims of a medico-judicial unit are to ensure the examination of assault victims or persons in custody and to perform sampling necessary for *** examination is essential to describe the wounds and to evaluate the consequences of an assault by determining days of total incapacity for work(ITT).After the Paris attack on November 13,2015,121 victims were examined at the medico-judicial units of *** initial forensic certificate was issued by forensic physicians with an assessment of physical ITT.A consultation with a forensic psychiatrist was systematically scheduled on the same day to obtain a forensic certificate for the psychological *** average age of the victims was(33±7)years and the sex ratio was *** victims were in the Bataclan concert hall(78/121 or 64.5%).Of the 121 victims,73(60.3%)had projectile lesions(bullets,bolts and nuts,metal fragments,etc.)and 48(39.7%)had non-projectile lesions(bruises,hematomas,etc.).The average physical ITT was 27 days(0;190).The evaluation of the number of days of physical ITT was often complicated as some patients were still in medical care at the time of the initial *** experience enabled the Paris medico-judicial unit to anticipate the management required should any future event of this magnitude *** also reinforced cooperation between the medico-judicial unit and other departments,mostly emergency services and the forensic psychiatric *** Paris medico-judicial unit was thus able to offer a unique place of care by providing both physical and psychological examinations.

关键词： Forensic sciences terrorism attacks medico-judicial unit November 13 2015 total incapacity for work

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电光显示器性能的测量与等级鉴定

现代显示 2008年第9期 12-16页

作者： Jürgen laur.刘艳艳 AUTRONIC-MELCHERs GmbH公司市场销售部南开大学

自1970年代液晶显示器面世以来,显示器度量专家们就一直致力于开发能够精确测量液晶显示器性能的系统,这是一个持续开发过程。本文详细叙述了专家们的艰苦历程以及当今的发展状况。

关键词：液晶显示器测量电光性能

Effects of Zr substitution on structural,morphological,and magnetic properties of bismuth iron oxide phases

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Chinese Physics B 2017年第8期26卷 450-455页

作者： A Asif M Hassan s Riaz s Naseem s s Hussain Materials Growth and simulation Laboratory Department of PhysicsUniversity of the PunjabLahore-54590Pakistan Center of Excellence in solid state Physics University of the PunjabLahore-54590Pakistan

The present study involves co-precipitation method to grow un-doped and Zr-doped bismuth iron oxide with x_（Zr）=0.10–0.30. The molar solutions of ferric chloride（FeCl_3）, zirconyle chloride（ZrOCl_2）, and bismuth chloride（BiCl_3） are prepared in distilled water, and are allowed to react with sodium hydroxide（Na OH）. The synthesized powders are then converted into pellets, which are sintered at 500℃ for two hours in a muffle furnace. X-ray diffraction（XRD） shows multi-phase formation in un-doped and Zr doped samples. scanning electron microscope（sEM） depicts layered structure at low Zr concentration x_（Zr）= 0.10, while uniform surface with smaller grains and voids is observed at x_（Zr）= 0.20, but at x_（Zr）= 0.30, cracks and voids become prominent. The ferromagnetic nature of the un-doped sample is observed by vibrating sample magnetometer（VsM）, while paramagnetic behavior appears due to Zr doping. The ferromagnetism in un-doped sample is lost by Zr doping, which is due to the formation of additional Fe–O–Zr bonds that induce paramagnetic behavior.

关键词： co-precipitation multi-phases ferromagnetism paramagnetism BiFeO3

Hydromagnetic oscillatory Couette flow in rotating system with induced magnetic field

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Applied Mathematics and Mechanics(English Edition) 2014年第10期35卷 1331-1344页

作者： G.s.sETH s.M.HUssAIN s.sARKAR Department of Applied Mathematics Indian School of Mines Department of Mathematics O.P.Jindal Institute of Technology

This paper presents a study of hydromagnetic Couette flow of an incompress- ible and electrically conducting fluid between two parallel rotating plates, one of which is oscillating in its own plane. A uniform transverse magnetic field is used, and the induced magnetic field is taken into account. The exact solution to the governing equations is obtained in a closed form. The solution to the problem in the case of vanishing and small finite magnetic Prandtl numbers is also derived from the general solution. The asymp- totic behavior of the solution for large values of the frequency parameter is analyzed to gain some physical insights into the flow pattern. Expressions for the shear stress at both the oscillatory and stationary plates due to primary and secondary flows and mass flow rate in the primary and secondary flow directions are also obtained. The results of the fluid velocity and the induced magnetic field are presented. The shear stresses on the plates due to the primary and secondary flows and the corresponding mass flow rates are presented in a tabular form.

关键词： magnetic interaction parameter Ekman number frequency parameter,hydromagnetic stokes-Ekman boundary layer magnetic diffusion boundary layer

Touristic urbanization and greening of coastal dune fields:A long-term assessment of a temperate sandy barrier of Argentina

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Journal of Geographical sciences 2025年第1期 206-230页

作者： GARZO Pedro Andrés DADON José Roberto IsLA Federico Ignacio Instituto de Investigaciones Marinas y Costeras (IIMyC-CONICET/UNMDP) Instituto de Geología de Costas y del Cuaternario Dr.Enrique J.schnack (IGCC-CIC/UNMDP) Universidad de Buenos Aires Facultad de Arquitectura Dise?o y Urbanismo Centro de Investigaciones Gestión de Espacios Costeros (GEC-FADU/UBA) Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET)

Dune barrier systems represent highly sought-after coastal landscapes for tourism and urban development around the world. However, a century ago, they were considered hazardous environments due to their great dynamic nature. As a result, stabilization practices were considered necessary. The systematic introduction of fast-growing exotic trees helped stabilize the sand, making it easier for tourism urbanization to take place, but also leading to erosion processes. This paper aims to assess long-term changes in vegetation cover over a large temperate barrier in Argentina. This complex region includes urban resorts, afforestation zones, and protected areas. A GIs-based geospatial analysis was conducted using a large satellite database(> 350 images), and the future evolution of the vegetation was modeled. The results revealed two primary spatiotemporal patterns associated with a gradual expansion of vegetation cover, accompanied by a concurrent reduction in sandy areas. In 1986, the dune area comprised 75% more surface than vegetation, whereas in 2021, it represented 60% less than vegetation. Furthermore, the 2050 scenario suggests a potential 40% reduction of dunes in certain areas. It is necessary to enhance management actions aimed at maintaining dune mobility and ensuring local and regional sediment balance. Long-term management strategies must focus on restoring native plant communities and controlling invasive species, and avoiding new dune fixation initiatives based on the introduction of exotic species.

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soft x-ray tomographic reconstruction of Heliotron J plasma for the study of magnetohydrodynamic equilibrium and stability

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Plasma science and Technology 2019年第6期21卷 72-78页

作者： s PUROHIT Y sUZUKI s OHDACHI s YAMAMOTO sOKENDAI The Graduate University for Advanced Studies Toki Gifu 509-5292 Japan National Institute for Fusion science Toki Gifu 509-5292 Japan Institute of Advanced Energy Kyoto University Gokasho Uji Kyoto 611-0011 Japan

The preparation for an experimental soft x-ray tomography study on the Heliotron J (H-J) machine is carried out,with the objectives of evaluating the capability of the current soft x-ray tomographic system in terms of the identification of different mode structures and their poloidal rotation,and the axis shift with different plasma and machine parameters,and fixing the physics goals for the experimental *** preparations were carried out via a simulated soft x-ray data set arising from different plasma conditions,such as magnetic islands,low beta and high *** x-ray tomography (sXT) is performed by the discrete pixel method including singular value decomposition and Phillips-Tikhonov regularization,to obtain clear and smooth *** H-J soft x-ray tomography results from simulated soft x-rays for the equilibrium H-J plasma sensed the magnetic axis shift clearly and an estimate was also *** reconstruction for mode structure m =1/n =1 was obtained along with the realization of the poloidal rotation of the *** reconstruction for the m =2/n =1 mode was not very clear for the current soft x-ray diagnostic *** mode identification was not possible due to the lack of *** sXT from the current soft x-ray diagnostic on H-J,the magnetic axis shift can be estimated and the m =1/n =1 mode can be *** of higher poloidal modes is difficult with the current design.

关键词： Heliotron J tomography soft x-ray magnetohydrodynamics

带废气旁通阀的涡轮增压对非道路机械用柴油机颗粒排放的影响

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汽车与新动力 2004年第6期 50-58页

作者： NiemisA laur.nMJ MurtonenTT 杨孝绪

研究了涡轮增压器设计对发动机性能和废气排放的影响。试验用发动机是一台直喷式、中冷、涡轮增压非道路机械用柴油机。本文特别关注发动机的颗粒(PM)排放。先在发动机上装一台标准的非控制涡轮增压器(TC),然后用一台带废气旁通阀的涡... 详细信息

研究了涡轮增压器设计对发动机性能和废气排放的影响。试验用发动机是一台直喷式、中冷、涡轮增压非道路机械用柴油机。本文特别关注发动机的颗粒(PM)排放。先在发动机上装一台标准的非控制涡轮增压器(TC),然后用一台带废气旁通阀的涡轮增压器(WG)替代它。该发动机燃用商品柴油。在整个负荷范围内,该发动机在3种转速下运转并记录了它的主要性能、废气排放以及排气中的颗粒数量。结果表明,带废气旁通阀的涡轮增压发动机在中速、低速高负荷运转时具有低颗粒排放和低烟度的优点,而在额定转速时标准涡轮增压略好于带废气旁通阀的涡轮增压。在废气排放方面,两种试验涡轮增压器之间并无明显差异。如所希望的那样,带废气旁通阀涡轮增压发动机的低速有效扭矩增大。采用废气旁通阀涡轮增压时,最低转速的有效热效率有所改善,几乎与中速时相等,而额定转速时略有下降。将来必须采取有效措施来显著降低试验发动机的毫微颗粒排放,因为这两种涡轮增压的毫微颗粒排放均处于高水平。此外,需要进行颗粒试样的化学分析,以提供每种颗粒的组分信息。以后还需要对整个喷油系统的进一步优化进行研究。

关键词：柴油机颗粒排放涡轮增压器效果