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Energy Geoscience 2024年第1期5卷 72-88页

作者： Ramin Soltanmohammadi Shohreh Iraji Tales Rodrigues de Almeida Mateus Basso Eddy Ruidiaz munoz Alexandre Campane Vidal Ingram School of Engineering Texas State UniversitySan MarcosTX78666USA Department of Mechanical Engineering(FEM) State University of Campinas(UNICAMP)CampinasSP13083-855Brazil Department of Geology and Natural Resources Geosciences Institute(IG)State University of Campinas(UNICAMP)CampinasSP13083-855Brazil Center of Energy and Petroleum Study(CEPETRO) State University of Campinas(UNICAMP)CampinasSP13083-855Brazil

Brazilian pre-salt reservoirs are renowned for their intricate pore networks and vuggy nature,posing significant challenges in modeling and simulating fluid flow within these carbonate *** possessing excellent petrophysical properties,such as high porosity and permeability,these reservoirs typically exhibit a notably low recovery factor,sometimes falling below 10%.Previous research has indicated that various enhanced oil recovery(EOR)methods,such as water alternating gas(WAG),can substantially augment the recovery factor in pre-salt reservoirs,resulting in improvements of up to 20%.Nevertheless,the fluid flow mechanism within Brazilian carbonate reservoirs,characterized by complex pore geometry,remains *** study examines the behavior of fluid flow in a similar heterogeneous porous material,utilizing a plug sample obtained from a vugular segment of a Brazilian stromatolite outcrop,known to share analogies with certain pre-salt *** conducted single-phase and multi-phase core flooding experiments,complemented by medical-CT scanning,to generate flow streamlines and evaluate the efficiency of water ***,micro-CT scanning of the core sample was performed,and two cross-sections from horizontal and vertical plates were *** cross-sections were then employed as geometries in a numerical simulator,enabling us to investigate the impact of pore geometry on fluid *** of the pore-scale modeling and experimental data unveiled that the presence of dead-end pores and vugs results in a significant portion of the fluid remaining stagnant within these ***,the injected fluid exhibits channeling-like behavior,leading to rapid breakthrough and low areal swept ***,the numerical simulation results demonstrated that,irrespective of the size of the dead-end regions,the pressure variation within the dead-end vugs and pores is *** the stromatolite's favorable petrophysica

关键词： Pore-scale modeling Pore geometry Flow streamlines Computational modeling Digital rock analysis

The relationship between fire severity and burning efficiency for estimating wildfire emissions in Mediterranean forests

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林业研究:英文版 2023年第5期34卷 1195-1206页

作者： Bountouraby Balde Cristina Vega-garcia Pere Joan Gelabert Aitor Ameztegui marcos Rodrigues Department of Agriculture and Forest Engineering University of LleidaAv.Alcalde Rovira Roure19125198 LleidaSpain Department of Geography and Land Management University of ZaragozaPedro Cerbuna 1250009 SaragossaSpain

Forests are exposed to changing climatic conditions reflected by increasing drought and heat waves that increase the risk of wildfire ignition and *** variables such as rain and wind as well as vegetation structure,land configuration and forest management practices are all factors that determine the burning potential of *** assessment of emissions released by vegetation combustion is essential for determining greenhouse gases and air *** estimation of wildfire-related emissions depends on factors such as the type and fraction of fuel(i.e.,live biomass,ground litter,dead wood)consumed by the fire in a given area,termed the burning *** approaches estimate live burning efficiency from optical remote sensing *** study used a data-driven method to estimate live burning efficiency in a Mediterranean *** severity estimations from Lands at imagery(dNBR),which relate to fuel consumption,and quantitative field data from three national forest inventory data were combined to establish the relationship between burning severity and live burning *** proxies explored these relationships based on dNBR interval classes,as well as regres sion *** correlation results between live burning efficiency and dNBR for conifers(R=0.63)and broad-leaved vegetation(R=0.95)indicated ways for improving emissions *** estimations by severity class(low,moderate-low,moderate-high,and high)are provided for conifers(0.44-0.81)and broad-leaves(0.64-0.86),and regression models for the live fraction of the tree canopy susceptible to burning(7 branches,and leaves).The live burning efficiency values by severity class were higher than previous studies.

关键词： Forest wildfires Emissions Greenhouse gases Satellite images

Environmental Factors that Affect Primary Plant Succession Trajectories on Lahars(Popocatépetl Volcano,Mexico)

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Journal of Mountain Science 2015年第5期12卷 1254-1266页

作者： garcia-ROMERO Arturo ALANIS-ANAYA Rocío Marisol munoz-JIMENEZ Julio Departamento de Geografía Física Instituto de GeografíaUniversidad Nacional Autónoma de México.Circuitoexterior s/nCiudad Universitaria04510 MexicoDistrito FederalMexico Laboratorio de Análisis Geoespacial Instituto de GeografíaUniversidad Nacional Autónoma de México.Circuitoexterior s/nCiudad Universitaria04510 MexicoDistrito FederalMexico Departamento de A.G.R.y Geografía Física Facultad de Geografía e HistoriaUniversidad Complutense de Madrid.Calle Profesor Aranguren s/nCiudad Universitaria28040MadridSpain

The earliest stages of plant succession on severely disturbed sites usually follow highly unpredictable trajectories. However, in the Popocatépetl volcano area(50 km SE of Mexico City),the development of physiognomically distinct primary plant communities suggests the occurrence of various successional trajectories only 10 years after the onset of colonization of a temperate forest on lahars. To characterize plant communities and determine the environmental factors that drive the differences observed between plant communities and their successional trajectories, we monitored 64 circular sample plots(3.14 m2) from 2002 to 2011. We examined the plant communities' composition and structure in terms of their species richness and abundance, plant cover, and maximum stem height,and recorded 13 environmental factors related to the volcanic deposit characteristics, microclimate, soil,flow dynamics and gravitational processes. A cluster analysis of the species abundance data showed that,by 2011, six plant community types(CT's) had established, including grasslands, and open, dense and very dense shrub lands. As these communities developed over the same period of time and within the same overall ecosystem, then these plant community types were interpreted as different stages of the same successional trajectory. Two sequential main stages that drive regeneration were identified from this successional trajectory: a) the first four years are characterized by a steady increase in species richness and physiognomic development(plant size and coverage), mostly dominated by Baccharis conferta, Eupatorium glabratum and Senecio barbajohannis; b) from the sixth year onwards, a continued increase in the abundance of those same species led to the development of the dense shrubland *** in the availability of soil resources and disturbances linked to recent lahar flows were the main factors accounting for such differences.

关键词： Ecosystem regeneration Plantcolonization Primary succession Temperate forest Light exposure Elevation Soil Slope aspect

Development of Extraction and Detection Method for a Chemotherapeutic Drug with Phenytoin in Biological Samples

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Advances in Biological Chemistry 2024年第4期14卷 103-110页

作者： Michael Arnot Nicolas Brice Adan garcia Victor Lomeli My Phuong Vu Karno Ng Department of Chemistry & Biochemistry California State University San Marcos San Marcos CA U.S.A.

Dexamethasone is classified as a corticosteroid and is commonly used among cancer patients to decrease the amount of swelling around the tumor. Among patients with cancer, in particular brain tumors, seizures can become a daily routine in their everyday lives. To counteract the seizures, an antiepileptic drug such as phenytoin is administered to act as an anticonvulsant. Phenytoin and dexamethasone are frequently administrated concurrently to brain cancer patients. A previous study has shown that phenytoin serum concentration decreases when administrated concurrently with dexamethasone. Thus, it is important to monitor the concentration of these two drugs in biological samples to ensure that the proper dosages are administrated to the patients. This study aims to develop an effective extraction and detection method for dexamethasone and phenytoin. A reverse-phase high-performance liquid chromatography (HPLC) method with UV/Vis detection has been developed to separate phenytoin and dexamethasone at 219 nm and 241 nm respectively from urine samples. The mobile phase consists of a mixture of 0.01 M KH2PO4, acetonitrile, and methanol adjusted to pH 5.6 (48:32:20) and is pumped at a flow rate of 1.0 mL/min. Calibration curves were prepared for phenytoin and dexamethasone (r2 > 0.99). An efficient solid-phase extraction (SPE) method for the extraction of dexamethasone and phenytoin from urine samples was developed with the use of C-18 cartridges. The percent recovery for phenytoin and dexamethasone is 95.4% (RSD = 1.15%) and 81.1% (RSD = 3.56%) respectively.

关键词： Dexamethasone Phenytoin Cancer Drug Interaction Solid Phase Extraction

Unveiling the controversial mechanism of reversible Na storage in TiO2 nanotube arrays： Amorphous versus anatase TiO2

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Nano Research 2017年第8期10卷 2891-2903页

作者： Federico Bella Ana B. munoz-garcia Giuseppina Meligrana Andrea Lamberti Matteo Destro Michele Pavone Claudio Gerbaldi GAME Lab CHENERGY Group Department of Applied Science and Technology - DISAT Politecnico di Torino Corso Duca degli Abruzzi 24 10129 Torino Italy Department of Chemical Sciences University of Naples Fedefico II Via Cintia 21 University Campus of Monte Sant'Angelo 80126 Napoli Italy MPMNT Group Department of Applied Science and Technology - DISAT Politecnico di Torino Corso Duca degli Abruzzi 24 10129 Torino Italy LITHOPS S.r.l. Strada del Portone 61 10137 Torino Italy

Due to their inherent safety, low cost, and structural stability, TiO2 nanostructures represent a suitable choice as anode materials in sodiumion batteries. In the recent years, various hypotheses have been proposed regarding the actual mechanism of the reversible insertion of sodium ions in the TiO2 structure, and previous reports are often controversial in this respect. Interestingly, when tested as binder- and conducting additive-free electrodes in laboratory-scale sodium cells, amorphous and crystalline （anatase） TiO2 nanotubular arrays obtained by simple anodic oxidation exhibit peculiar and intrinsically different electrochemical responses. In particular, after the initial electrochemical activation, anatase TiO2 shows excellent rate capability and very stable long-term cycling performance with larger specific capacities, and thus a clearly superior response compared with the amorphous counterpart. To obtain deeper insight, the present materials are thoroughly characterized by scanning electron microscopy and ex situ X-ray diffraction, and the insertion of sodium ions in the TiO2 bulk phases is systematically modeled by density functional theory calculations. The present results may contribute to the development of more systematic screening approaches to identify suitable active materials for highly efficient sodium-based energy storage systems.

关键词： sodium battery TiO2 nanotube array anode modeling insertion mechanism

Validity of automated refraction after segmented refractive multifocal intraocular lens implantation

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International Journal of Ophthalmology(English edition) 2017年第11期10卷 1728-1733页

作者： Cesar Albarran-Diego Gonzalo munoz Stephanie Rohrweck Satiago garcia-Lazaro Jose Ricardo Albero Clinica Baviera Castellon Castellon de la Plana 12001 Spain Optics Optometry and Vision Sciences Department University of Valencia Burjassot 46100 Spain

AIM： To evaluate the clinical utility of automated refraction（AR） and keratometry（KR） compared with subjective or manifest refraction（MR） after cataract or refractive lens exchange surgery with implantation of Lentis Mplus X（Oculentis GmbH） refractive multifocal intraocular lens（IOL）.METHODS： Eighty-six eyes implanted with the Lentis Mplus X multifocal IOL were included. MR was performed in all patients followed by three consecutive AR measurements using the Topcon KR-8000 autorefractor. Assessment of repeatability of consecutive AR before and after dilation with phenylephrine 10%, and comparison of the AR and KR with MR using vector analysis were performed at 3 mo ***： Analysis showed excellent repeatability of the AR measurements. Linear regression of AR versus MR showed good correlation for sphere and spherical equivalent, whereas the correlation for astigmatism was low. The mean difference AR-MR was-1.28±0.29 diopters（D） for sphere. Astigmatism showed better correlation between KR and MR. CONCLUSION： We suggest AR sphere plus 1.25 D and the KR cylinder as the starting point for MR in eyes with a Lentis Mplus X multifocal IOL. If AR measurements are equal to MR, decentration of the IOL should be suspected.

关键词： autorefraction vector analysis agreement multifocal intraocular lenses

利用采光井进行建筑通风的新型应用模型:基于案例研究评估的建议（英文）

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2018年第10期19卷 796-810页

作者： Miguel Angel PADILLA-marcos Alberto MEISS Jesus FEIJO-munoz Research Group of Architecture&Energy Universidad de ValladolidValladolid 47014Spain

目的:1.探究如何在有限的室外空间下简便地计算换气质量;2.建立利用采光井进行建筑通风的应用模型。创新点:1.案例研究评估的成熟方法论应用;2.得到采光井对室内空气通风促进度的速算图表。方法:1.采用风洞分析的两步确认法;2.对实际采... 详细信息

目的:1.探究如何在有限的室外空间下简便地计算换气质量;2.建立利用采光井进行建筑通风的应用模型。创新点:1.案例研究评估的成熟方法论应用;2.得到采光井对室内空气通风促进度的速算图表。方法:1.采用风洞分析的两步确认法;2.对实际采光井模型进行计算流体动力学应用。结论:1.高长比小于3的采光井表现出了不错的换气能力;2.对空气质量要求更高的居住空间(如卧室和起居室)而言,室内通风口必须被设在高度低于24米的采光井的上半部分或者其他采光井中距离顶部12米以内的位置。

关键词：室外空气质量采光井自然通风计算流体动力学换气效率

Effects of 12 weeks of barefoot running on foot strike patterns,inversion-eversion and foot rotation in long-distance runners

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Journal of Sport and Health Science 2019年第6期8卷 579-584页

作者： Pedro ALatorre-Román Felipe García-Pinillos Víctor M.Soto-Hermoso marcos munoz-Jiménez Department of Didactics of Corporal Expression University of JaénJaen 23071Spain Department of Sports Sciences University of GranadaGranada 18071Spain

Purpose:The purpose of this study was to determine the effects of 12 weeks of barefoot running on foot strike patterns,inversion-eversion and foot rotation in long-distance ***:Thirty-one endurance runners with no experience in barefoot running were randomized into a control group and an experimental group who received barefoot *** pre-test and post-test,all subjects ran at low and high self-selected speeds on a *** were collected by systematic observation of lateral and back recordings at 240 ***:McNemar’s test indicated significant changes(p <0.05) in the experimental group at both high and low speed running in foot strike patterns,reducing the percentage of high rearfoot strikers and increasing the number of midfoot strikers.A significant increase(p <0.05) of external rotation of the foot and a decrease of inversion occurred at comfortable speed in the experimental ***:Twelve weeks of barefoot running,applied progressively,causes significant changes in foot strike pattern with a tendency toward midfoot or forefoot strikes,regardless of running speed and significant changes in foot rotation at low speed,while the inversion was reduced in left foot at low speed with a tendency toward centered strike.

关键词： Endurance Footwear Kinematics Training Unshod

Dog sperm head morphometry： its diversity and .=volution

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Asian Journal of Andrology 2017年第2期19卷 149-153页

作者： Caries Soler Ana Alambiaga Maria A Marti Almudena garcia-Molina Anthony Valverde Jesus Contell marcos Campos Department of Functional Biology and Physical Anthropology University of Valencia 46100 Burjassot Spain R+D Department Proiser R+D Scientific Park University of Valencia 46980 Paterna Spain 3Technological Institute of Costa Rica San Carlos Campus School of Agronomy 223-21001 Alajuela Costa Rica Department of Medicine and Animal Surgery University CardenaI-Herrera-CEU 46113 Moncada Valencia Spain Global Veterinaria (Reprovalcan) 46500 Sagunto Valencia Spain Clinica Veterinaria Sangueso 46009 Valencia Spain

Dogs have been under strong artificial selection as a consequence of their relationship with man. Differences between breeds are evident that could be reflected in seminal characteristics. The present study was to evaluate differences in sperm head morphometry between seven well-defined breeds of dog： the British Bulldog, Chihuahua, German Shepherd, Labrador Retriever, Spanish Mastiff, Staffordshire Terrier, and Valencian Rat Hunting dog. Semen samples were obtained by masturbation and smears stained with Diff-Quik. Morphometric analysis （CASA-Morph） produced four size and four shape parameters. Length, Ellipticity, and Elongation showed higher differences between breeds. MANOVA revealed differences among all breeds. Considering the whole dataset, principal component analysis （PCA） showed that PC1 was related to head shape and PC2 to size. Procluster analysis showed the British Bulldog to be the most isolated breed, followed by the German Shepherd. The PCA breed by breed showed the Chihuahua, Labrador Retriever, Spanish Mastiff, and Staffordshire Terrier to have PC1 related to shape and PC2 to size, whereas the British Bulldog, Valencia Rat Hunting dog, and German Shepherd had PC1 related to size and PC2 to shape. The dendrogram for cluster groupings and the distance between them showed the British Bulldog to be separated from the rest of the breeds. Future work on dog semen must take into account the large differences in the breeds＇ sperm characteristics. The results provide a base for future work on phylogenetic and evolutionary studies of dogs, based on their seminal characteristics.

关键词： Canis familiaris cluster analysis diversity sperm morphometry