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Rainfall partitioning in young clonal plantations eucalyptus species in a subtropical environment,and implications for water and forest management

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International Soil and Water Conservation Research 2021年第3期9卷 474-484页

作者： Decio oscar Cardoso Ferreto JoséMiguel Reichert Rosane Barbosa Lopes Cavalcante Raghavan Srinivasan Soils Department Universidade Federal de Santa Maria(UFSM).Avenida Romima 1000Santa MariaRSBrazil Instituto Tecnoldgico Vale.Rua Boaventura da Silva 955UmarizalBelemPABrazil Department of ecology and Conservation Biology Texas A&M University(TAMU)534 John Kimbrough Blvd.Room 305College StationTXUSA

Different canopy characteristics of industrial eucalyptus may lead to differences in water evaporation and availability to *** study aims to understand rainfall partitioning in a young clonal plantation(age of 2-4.5 years)of three eucalyptus species by relating tree.parameters:diameter at breast height,total height,and leaf area *** measured rainfall,throughfall,stemflow and litter interception,along with the tree *** eucalyptus trees had rainfall interception varying between 22 mm(for 178 mm of rainfall)and 42 mm(for 87 mm of te rainfall),throughfall between 106 mm(for 186 mm of rainfall)and 44 mm(for 74 mm of rainfall),and stemflow between 0.5 mm(for 92 mm of rainfall)and 1.4 mm(for 24 mm of rainfall).For the three species,rainfall interception varied between 12 and 48%,throughfall between 57 and 90%,and stemflow between 0.3 and 5.4%.The coefficient of determination between interception and rainfall was 0.76,indicating interception depends on other variables,possibly including antecedent rainfall,rainfall intensity,and *** decreased with a reduction in leaf area index caused by eucalyptus *** *** had 0.75 mm of throughfall per 1 mm of rainfall,whereas in *** and e saligna,these ratios were 0.71 and 0.68,*** in *** and *** had a higher positive relationship with the diameter at breast height of the trees,whereas in *** the highest relationship was with the *** results contribute to establishing management strategies,such as choosing suitable eucalyptus species to local climate,and to improve the synchronization of crop-demand versus soil-water-supply while maintaining streamflow to fulfill ecological and production needs.

关键词： Water balance Blue-green water Forest hydrology Rainfall interception Rainfall throughfall

Drought Tolerance and Recovery of the Sedge Carex planostachys (Cyperaceae) from Central Texas Woodlands

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American Journal of plant Sciences 2024年第9期15卷 746-765页

作者： e. Rob Wayne oscar William Van Auken Natural Sciences Department St. Philips College San Antonio USA Department of Integrative Biology The University of Texas at San Antonio San Antonio USA

Carex planostachys Kunze (Cyperaceae, Cedar sedge) is an herbaceous species in a genus commonly inhabiting mesic or hydric habitats. Carex planostachys is found in arid and semi-arid Juniperus woodlands. Arid conditions impose survival challenges to plants in dry areas. Some.plants have.plasticity re.ponses to soil water content and continued normal though reduced functions through droughts, but most herbaceous plants do not survive. Limited previous studies have suggested C. planostachys is tolerant of drought. physiological re.ponses of C. planostachys from Juniperus woodlands was examined is this study to determine how long plants could survive without water and if they are capable of recovery from very negative water potentials beyond what is considered the.permanent wilting point for most herbaceous plants. plants were.placed in pots in partial shade in this e.periment. Water loss from the soil with plants was an inverse 2nd order polynomial function with soil water decreasing from 32% to 8% by day 28 of the study. Leaf water potential was also an inverse 2nd order polynomial function but did not decline significantly until 14 days without watering. Leaf water potential was −10.0 Mpa after 35 days without watering. Non-watered plants Anet, (photosynthetic rate) was significantly lower compared to the water treatment by day 21 as was stomatal conductance and transpiration. When non-watered plants were watered after 21, 28 or 35 days, full recovery of physiological re.ponses occurred within 7 days. The length of time that C. planostachys was able to withstand drought was greater than the annual trends in lack of precipitation during springtime in this area. Carex planostachys can photosynthesize at water stress between −8 and −10 Mpa. Carex planostachys drought and shade tolerance enables it to occupy an understory niche devoid of other herbaceous plants.

关键词： CO2 Uptake Conductance Gas exchange photosynthesis Re.piration Transpiration Water Stress Water potential.

effect of reaction and post-treatment conditions on physico-chemical properties of magnetic iron oxide nano-particles Author links open overlay panel

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particuology 2024年第8期91卷 155-167页

作者： Masome Moeni Mohamed edokali Matthew Rogers oscar Ce.pedes Louey Tliba Tamseela Habib Robert Menzel Ali Hassanpour School of Chemical and process engineering Faculty of Engineering and Physical ScienceUniversity of LeedsLeedsLS29JTUK School of physics and Astronomy Faculty of Engineering and Physical ScienceUniversity of LeedsLeedsLS29JTUK Mechanical engineering Department University of Engineering&TechnologyLahorePakistan School of Chemistry Faculty of Engineering and Physical ScienceUniversity of LeedsLeedsLS29JTUK

poor stability and dispersibility,as well as aggregation are considered as major challenges in clinical application of iron oxide nanoparticles(IONps).Several studies have shown that the synthesis parameters and post-synthesis treatments e.g.,drying methods,have the capability to improve the.particles'***,we investigate the combined effect of synthesis and post-treatment parameters on the.particle size,stability and magnetism of ***(Fe_(3)O_(4))Nps were.prepared via co-precipitation and post-treated using different methods,i.e.(i)freeze dried at-53℃,0.133 mbar for 48 h(liquid nitrogen frozen(LFD)and freezer frozen(FFD)),(ii)vacuum oven dried(VOD)at 60℃for 24 h,and(iii)kept wet colloidal(WeT),dispersed in deionized *** Fe_(3)O_(4)Nps’chemical functional groups,size,shape,crystallinity,stability,aggregation,porosity,and magnetic properties were further analysed using different characterisation *** results showed that,while the WeT sample had the best stability and significantly less aggregation at different te.peratures,amongst post-treated Fe_(3)O_(4)Nps,LFD sample exhibited the best stability(up to 37℃),dispersion and smallest polydispersity ***,all dried Nps had supe.paramagnetic characteristics,while,LFD Fe_(3)O_(4)Nps had better magnetic properties and stability than other drying methods.

关键词： Iron oxide nanoparticles Co-precipitation Stability Aggregation Magnetic properties

Three-dimensional organ modeling based on deformable surfaces applied to radio-oncology

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Journal of Zhejiang University-Science C(Computers and electronics) 2010年第6期11卷 407-417页

作者： Gloria BUeNO oscar DéNIZ Jesús SALIDO Carmen CARRASCOSA José M. DeLGADO Grupo de Visióny Sistemas Inteligentes Universidad de Castilla-La Mancha E.T.S. Ingenieros Industriales Avda. Camilo José Cela 3. 13071 Ciudad Real Spain Hospital General de Ciudad Real Tomelloso s/n. 13005 Ciudad Real Spain Instituto Oncológico (Grupo IMO) Modesto Lafuente 14 28010 Madrid Spain

This paper describes a method based on an energy minimizing deformable model applied to the 3D biomechanical modeling of a set of organs considered as regions of interest (ROI) for radiotherapy. The initial model consists of a quadratic surface that is deformed to the exact contour of the ROI by means of the.physical properties of a mass-spring system. The exact contour of each ROI is first obtained using a geodesic active contour model. The ROI is then parameterized by the vibration modes resulting from the deformation process. Once each structure has been defined, the method provides a 3D global model including the whole set of ROIs. This model allows one to describe statistically the most significant variations among its structures. Statistical ROI variations among a set of patients or through time can be analyzed. e.perimental results are.presented using the.pelvic zone to simulate anatomical variations among structures and its application in radiotherapy treatment planning.

关键词： 3D biomechanical organ modeling energy minimizing deformable model Finite element model Geodesic active contour Radiotherapy treatment planning

Computer vision based eyewear selector

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Journal of Zhejiang University-Science C(Computers and electronics) 2010年第2期11卷 79-91页

作者： oscar DéNIZ Modesto CASTRILLóN Javier LOReNZO Luis ANTóN Mario HeRNANDeZ Gloria BUeNO Instituto Universitario de Sistemas Inteligentes y Aplicaciones Numéricas en Ingeniería Universidad de Las Palmas deGran CanariaEdificio Central del Parque Científico-Tecnológico 35017 Las Palmas e.T.S. Ingenieros Industriales Universidad de Castilla-La Mancha Campus UniversitarioAvda. Camilo José Cela

The wide.pread availability of portable computing power and ine.pensive digital cameras are opening up new possibilities for retailers in some markets. One example is in optical shops,where a number of systems exist that facilitate eyeglassess election. These systems are now more necessary as the market is saturated with an increasingly complex array of lenses,frames,coatings,tints,photochromic and polarizing treatments,etc. Research challenges encompass Computer Vision,Multimedia andHuman-Computer Interaction. Cost factors are also of importance for wide.pread product acceptance. This paper describes alow-cost system that allows the user to visualize different glasses models in live video. The user can also move the glasses toadjust its position on the face. The system,which runs at 9.5 frames/s on general-purpose hardware,has a homeostatic modulethat ke.ps image.parameters controlled. This is achieved by using a camera with motorized zoom,iris,white balance,etc. Thisfeature can be specially useful in environments with changing illumination and shadows,like in an optical shop. The system alsoincludes a face and eye detection module and a glasses management module.

关键词： Face detection. eve detection perceptual user interfaces Human-computer interaction

Biometric and ICL-related risk factors associated to sub-optimal vaults in eyes implanted with implantable collamer lenses

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eye and Vision 2021年第5期8卷 253-262页

作者： Santiago Ce.pa Manito Angel Sánchez Trancón oscar Torrado Sierra António Manuel Baptista pedro Miguel Serra Research and Development Department Ophthalmology Clinic Vista Sánchez TrancónBuilding TecnolaserRoom 14 Calle La Violeta06005 BadajozSpain Center of physics University of MinhoBragaPortugal Optics and Optometry Department Instituto Superior de Educação e CiênciasLisbonPortugal

Background:To identify biometric and implantable collamer lens(ICL)-related risk factors associated with suboptimal postoperative vault in eyes implanted with phakic ***:This study reports a retrospective case series of the first operated eye in 360 patients implanted with myopic spherical or toric ***,white-to-white(WTW),central keratometry(Kc)and central corneal thickness(CCT)were measured using the ***-segment optical coherence tomography(AS-OCT,Visante)was applied pre.peratively for measuring the horizontal anterior-chamber angle-to-angle distance(ATA),internal anterior chamber depth(ACD),crystalline lens rise(CLR),anterior-chamber angle(ACA)and postoperatively the *** were divided into three vault groups:low(LVG:≤250μm),optimal(OVG:>250 andegression(MLR)was used to find the sub-optimal vault ***:MLR showed that CLR,ICL size minus the ATA(ICL size-ATA),age,ICL spherical equivalent(ICLSe)and ICL size as contributing factors for sub-optimal vaults(pseudo-R2=0.40).Increased CLR(OR:1.01,CI:1.00-1.01)and less myopic ICLSe(OR:1.22,CI:1.07-1.40)were risk factors for low *** ICL size-ATA(OR:41.29,CI:10.57-161.22)and the 13.7mm ICL(OR:7.08,CI:3.16-15.89)were risk factors for high vaults,whereas less myopic ICLSe(OR:0.85,CI:0.76-0.95)and older age(OR:0.92,CI:0.88-0.98)were.protective ***:High CLR and low ICLSe were the major risk factors in eyes presenting low *** the opposite direction,ICL size-ATA was the major contributor for high *** relationship was more critical in higher myopic ICLSe,younger eyes and when 13.7mm ICL were *** findings show that factors influencing the vault have differentiated weight of influence depending on the type of vault(low,optimal or high).

关键词： Implantable collamer lens Refractive surgery Vault Risk factors

Highly defective graphene： A key prototype of two- dimensional Anderson insulators

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Nano Research 2013年第5期6卷 326-334页

作者： Aurelien Lherbier Stephan Roche oscar A. Restrepo Yann-Michel Niquet Arnaud Delcorte Jean-Christophe Charlier Universite catholique de Louvain (UCL) Institute of Condensed Matter and Nanoscience (IMCN) NAPS-ETSF Chemin des ~toiles 8 1348 Louvain-la-Neuve Belgium CIN2 (ICN-CSIC) and Universitat Autonoma de Barcelona Catalan Institute of Nanotechnology Campus UAB 08193 Bellaterra (Barcelona) Spain ICReA Institucio Catalana de Recerca i Estudis Avancats 08070 Barcelona Spain Universite catholique de Louvain (UCL) Institute of Condensed Matter and Nanoscience (IMCN) BSMA Place Croix du Sud 1 (Boltzmann) 1348 Louvain-la-Neuve Belgium L_Sim SP2M UMR-E CEA/UJF-Grenoble 1 INAC 17 rue des Martyrs 38054 Grenoble Cedex 9 France

electronic structure and transport properties of highly defective two-dimensional （2D） sp2 graphene are investigated theoretically. Classical molecular dynamics are used to generate large graphene.planes containing a considerable amount of defects. Then, a tight-binding Hamiltonian validated by ab initio calculations is constructed in order to compute quantum transport within a real-space order-N Kubo-Greenwood approach. In contrast to pristine graphene, the highly defective sp2 carbon sheets exhibit a high density of states at the charge neutrality point raising challenging questions concerning the electronic transport of associated charge carriers. The analysis of the electronic wavepacket dynamics actually reveals extremely strong multiple scattering effects giving rise to mean free.paths as low as 1 nm and localization phenomena. Consequently, highly defective graphene is envisioned as a remarkable.prototype of 2D Anderson insulating materials.

关键词： graphene electronic transport Anderson insulators localization

Mixed vitamin C and zinc diet supplements co-administered with artemether drug improved haematological profile and survival of mice infected with plasmodium berghei

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Food Science and Human Wellness 2019年第3期8卷 275-282页

作者： Felicia N.ekeh Nkiru e.ekechukwu Chimdinma F.Chukwuma Ifeanyi oscar N.Aguzie Chinenye M.Ohanu Chike ebido Stanley N.Oluah Department of Zoology and environmental Biology University of NigeriaNsukkaEnugu StateNigeria Center for parasitology and entomology School of Life SciencesHuxley BuildingKeele UniversityST55BG KeeleUK

Iron and zinc deficiencies is common in malaria endemic areas and contributes to *** C and zinc combined supplements have been hypothesized as a *** study evaluated the effect of different combinations of vitamin C and zinc on haematological parameters and mortality of plasmodium berghei-infected mice(Mus musculus).A three-week trial was carried out to assess haematological changes and mortality of mice after 3-day artemether treatment co-administered with vitamin C-zinc *** was based on combinations of vitamin C and ***,packed cell volume.pCV),white blood cell count(WBC),red blood cell count(RBC),haemoglobin concentration(HB),and mortality were assayed *** supplement improved pCV,HB,mean cell volume(MCV)and mean cell haemoglobin(MCH).Mice mortality was higher in the absence of the supplement,though the difference was not significant(x^2=5.214,p=0.5167).parasitaemia was not reduced by the supplement.A 30:70 vitamin C-zinc supplement performed better than other combinations ***,vitamin C-zinc supplement play roles in the management of malaria,since they improved pCV and HB,and lowered mortality rate,complementing the therapeutic effect of artemether.

关键词： Dietary supplement Food supplement Micronutrient Zinc Vitamin C Malaria Nutritional medicine

Bile-acid-induced cell injury and protection

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World Journal of Gastroenterology 2009年第14期15卷 1677-1689页

作者： Maria J perez oscar Briz Research Unit University Hospital of Salamanca Laboratory of e.perimental Hepatology and Drug Targeting CIBERehd University of Salamanca E.D. 129 37007 Salamanca Spain

Several studies have characterized the cellular and molecular mechanisms of hepatocyte injury caused by the retention of hydrophobic bile acids （BAs） in cholestatic diseases. BAs may disrupt cell membranes through their detergent action on lipid components and can promote the generation of reactive oxygen species that, in turn, oxidatively modify lipids, proteins, and nucleic acids, and eventually cause hepatocyte necrosis and apoptosis. Several pathways are involved in triggering hepatocyte apoptosis. Toxic BAs can activate hepatocyte death receptors directly and induce oxidative damage, thereby causing mitochondrial dysfunction, and induce endoplasmic reticulum stress. When these compounds are taken up and accumulate inside biliary cells, they can also cause apoptosis. Regarding extrahepatic tissues, the accumulation of BAs in the systemic circulation may contribute to endothelial injury in the kidney and lungs. In gastrointestinal cells, BAs may behave as cancer promoters through an indirect mechanism involving oxidative stress and DNA damage, as well as acting as selection agents for apoptosis-resistant cells. The accumulation of BAs may have also deleterious effects on placental and fetal cells. However, other BAs, such as ursodeoxycholic acid, have been shown to modulate BA-induced injury in hepatocytes. The major beneficial effects of treatment with ursodeoxycholic acid are.protection against cytotoxicity due to more toxic BAs; the stimulation of hepatobiliary secretion; antioxidant activity, due in part to an enhancement in glutathione levels; and the inhibition of liver cell apoptosis. Other natural BAs or their derivatives, such as cholyI-N- methylglycine or pharmacological properties. cholylsarcosine, interest owing have also aroused to their protective

关键词： Apoptosis Cholestasis Liver Necrosis Oxidative stress Ursodeoxycholic acid