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Interactive effects of elevated CO_2 and Ozone on Leaf Thermotolerance in Field-grown Glycine max

Journal of Integrative Plant Biology 2008年第11期50卷 1396-1405页

作者： Sasmita Mishra Scott A. Heckathorn Deepak Barua Dan Wang Puneet Joshi e. William Hamilton III jonathan Frantz Department of environmental Sciences University of Toledo Toledo Ohio USA Department of Biology Washington and Lee University Lexington Virginia USA United States Department of Agricuffure-Agricultural Research Service University of Toledo Toledo Ohio 43606 USA

Humans are increasing atmospheric CO2, ground-level ozone （O3）, and mean and acute high temperatures. Laboratory studies show that elevated CO2 can increase thermotolerance of photosynthesis in C3 plants. O3-related oxidative stress may offset benefits of elevated CO2 during heat-waves. We determined effects of elevated CO2 and O3 on leaf thermotolerance of field-grown Glycine max （soybean, C3）. Photosynthetic electron transport （Фet） was measured in attached leaves heated in situ and detached leaves heated under ambient CO2 and O3. Heating decreased Фet, which O3 exacerbated. elevated CO2 prevented O3-related decreases during heating, but only increased Фet under ambient O3 in the field. Heating decreased chlorophyll and carotenoids, especially under elevated CO2. Neither CO2 nor O3 affected heat-shock proteins. Heating increased catalase （except in high O3） and Cu/Zn-superoxide dismutase （SOD）, but not Mn- SOD; CO2 and O3 decreased catalase but neither SOD. Soluble carbohydrates were unaffected by heating, but increased in elevated CO2. Thus, protection of photosynthesis during heat stress by elevated CO2 occurs in field-grown soybean under ambient O3, as in the lab, and high CO2 limits heat damage under elevated O3, but this protection is likely from decreased photorespiration and stomatal conductance rather than production of heat-stress adaptations.

关键词： anti-oxidants global change heat-shock proteins photosynthesis.

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Arthritis & arthroplasty, The hand, wrist, and elbow /

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2010年

作者： edited by A. Bobby Chhabra jonathan e. Isaacs.

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Possible Neutrino-Antineutrino Production during Gamma Ray e−e+ Pair Production: Monte Carlo Simulation Study

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Journal of Modern Physics 2022年第11期13卷 1331-1340页

作者： Michael Bettan jonathan Walg Itzhak Orion Department of Nuclear engineering Ben-Gurion University of the Negev Beer-Sheva Israel Soreq NRC Yavne Israel

An alternative Feynman diagram for electron-positron pair production, in which neutrino and antineutrino are also produced on the same pathway, is introduced here. In the proposed pair production process, a portion of the momentum is carried by neutrinos and antineutrinos, allowing the rest of the momentum for the electron-positron pair. Simulations to inspect the proposed pair production process were conducted in this research using the eGS5 code system while modifying its subroutine “PAIR”. Liquid Xenon detector was then positioned in the path of various mono-energetic photon beams ranging from 2.6 to 12 MeV. These simulations were intended to inspect the detectability of the alternative pair production effects on radiation measurements in order to assess the detection conditions. Simulation results provided a comparison between the original pair production process and the proposed pair production process. Spectral results showed that changes in the region around 1 - 2 MeV and in the photopeak region were remarkable, therefore detectable. Further experimental research is recommended based on simulation findings. The alternative pair production process, firstly introduced in this paper, led to production of a larger flux of neutrinos from gamma radiation. This additional neutrino production and its contribution to non-baryonic dark matter are discussed.

关键词： Gamma Pair-Production Radiation Neutrino Dark-Matter

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ecofriendly e-Nose Based in PLA and Only 0.3 wt%of CNTs

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Journal of Renewable Materials 2019年第4期7卷 355-363页

作者： Laura Ribba jonathan Cimadoro Silvia Goyanes Universidad de Buenos Aires Facultad de Ciencias Exactas y NaturalesDepartamento de FísicaLaboratorio de Polímeros y Materiales Compuestos(LP&MC)Instituto de Física de Buenos Aires(IFIBA-CONICET)Ciudad Universitaria(1428)Ciudad Autónoma de Buenos AiresArgentina

In this work,conductive polymer nanocomposites were developed based on a biodegradable and biobased polymer(poly(lactic acid)),with the incorporation of only 0.3 wt%of carbon nanotubes(CNTs)to be used as volatile solvent *** correct dispersion of the nanofiller was achieved thanks to a CNT non-covalent modification with an azo-dye(disperse orange 3)which allowed to reach the percolation for electric conduction in values as low as 0.3 wt%.The chemo-resistive properties of the developed sensors were investigated by exposure to organic vapors(ethanol,tetrahydrofuran and toluene)and water vapor,showing good *** addition,considering the manipulation to which the sensor will be exposed,wear resistance was characterized,finding that the incorporation of CNTs produced an increase in more than a 50%.

关键词： Poly(lactic acid) carbon nanotubes sensor CPC organic solvent vapor DO3

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Laser speckle contrast imaging compared with indocyanine green in renal perfusion of a porcine model

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Current Urology 2023年第2期17卷 141-145页

作者： jonathan Noël Anya Mascarenhas Chibueze A.Nwaiwu Yao Liu Marcio Moschovas Vasiliy e.Buharin John Oberlin Saloni Mehrotra Alyson F.Dechert Peter C.W.Kim Vipul Patel Department of Urology AdventHealth Global Robotics InstituteCelebrationFL 34747USA Harvard University CambridgeMAUSA Department of Surgery Warren Alpert Medical School of Brown UniversityRhode Island HospitalProvidenceRIUSA Department of Research Activ Surgical Inc.BostonMAUSA Department of Surgery University of BuffaloBuffaloNYUSA

Background:When viewed under near-infrared light,indocyanine green(ICG)signal for kidney perfusion can be utilized in partial *** speckle contrast imaging(LSCI)uses coherent light to detect perfusion during real-time laparoscopic *** and methods:Laser speckle contrast imaging or ActivSight,an imaging sensor adapter,was used during laparoscopy of an anesthetized porcine kidney ***'s"perfusion mode"and"quantification mode"displayed the blood flow as a heatmap and numerical signal intensity,***:After the upper segmental renal artery was clamped,ICG was seen in the lower pole,and LSCI showed low unit(dark color)quantification and perfusion in the upper *** green was retained in the lower pole after the upper segmental artery was unclamped,and LSCI perfusion was demonstrated in the entire ***:Laser speckle contrast imaging is a dye-free,repeatable,real-time adjunct for renal parenchymal perfusion assessment applicable to minimally invasive renal surgery to complement the technology of ICG near-infrared fluorescence and advance digital surgery.

关键词： Augmented reality Indocyanine green Laser speckle contrast imaging Perfusion Selective arterial clamping

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Molecular rotor based on an oxidized resorcinarene

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Organic Chemistry Frontiers 2022年第1期9卷 39-50页

作者： Daniel T.Payne Jan Labuta Zdeněk Futera Václav Březina Lenka Hanyková Mandeep K.Chahal jonathan P.Hill International Center for Materials Nanoarchitectonics National Institute for Materials ScienceNamiki 1-1TsukubaIbaraki 305-0044Japan bInternational Center for Young Scientists National Institute for Materials ScienceNamiki 1-1TsukubaIbaraki 305-0044Japan Institute of Physics Faculty of ScienceUniversity of South BohemiaBranišovská1760ČeskéBudějovice 37005Czech Republic Faculty of Mathematics and Physics Charles UniversityV Holešovičkách 218000 Prague 8Czech Republic

Molecular rotors are an important class of dynamic molecules which have been studied not only for their possible uses as components of molecular machines but also because of potential applications as probes of local viscosity in biological media,especially self-assembled *** the former,factors affecting rotational motility are critical while for the latter the rotor activity must be complexed with an output signal(often fluorescence)for reporting of local *** single stator-double rotor activity of an oxidized resorcinarene(fuchsonarene)macrocycle containing unsaturated hemiquinonoid groups at its meso positions was *** contain two hemiquinonoid substituents at diagonally-opposed meso-positions with two electron rich phenol groups at the remaining meso-positions between the hemiquinonoid *** meso-substituents are in proximity at one side of the resorcinarene macrocycle(so-called rccc-type isomer)with rotational activity of the phenol *** rates of the phenol moieties can be controlled by varying temperature,solvent polarity and acidity of the medium of study with rotation being thermally activated in neutral and acidic media and tunable in the range from 2 s^(−1) to 20000 s^(−1).experimental and computational data indicate that rotation of the mobile phenol meso-substituents is remotely affected by interactions with acidic solvents at the carbonyl CvO groups of macrocyclic acetyloxy groups,which occurs with the emergence of a lower energy electronic absorption band whose intensity is correlated with both the acidity of the medium and the rotation rate of the phenol ***-dependent DFT calculations suggest that the low energy band is due to a molecular conformational adjustment affecting electronic conjugation caused by strong interaction of macrocyclic acetyloxy carbonyl groups with the acid *** work presents a molecular mechanical model for estimating solution acidity a

关键词： substituent rotation oxidized

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Camera traps reveal the natural corridors used by mammalian species in eastern Mexico

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ecological Processes 2022年第1期11卷 711-722页

作者： jonathan O.Huerta‑Rodríguez Octavio C.Rosas‑Rosas Lauro López‑Mata JoséL.Alcántara‑Carbajal Luis A.Tarango‑Arámbula Programa de Recursos Genéticos y Productividad‑Ganadería Colegio de Post‑graduadosCampus MontecilloTexcocoMexico Programa de Innovación en Manejo de Recursos Naturales Colegio de PostgraduadosCampus San Luis PotosíSan Luis PotosíMexico Programa de Dinámica y Conservación de Bosques y Selvas Macroecología y BiodiversidadColegio de PostgraduadosCampus MontecilloTexcocoMexico

Background:Habitat loss and fragmentation in the Sierra Madre Oriental(SMO)ecological corridor have negative impacts on the movement and distribution of mammalian species that are of great ecological and evolutionary *** of the SMO ecological corridor that is located in the state of Hidalgo is less studied despite being a potential dispersal route for *** objectives of this study were to evaluate the presence and activity of terrestrial mammals in the riparian and non‑riparian zones of ***:Camera traps detected 15 mammalian species(i.e.,14 native and 1 domestic)in the non‑riparian zone,and 12 mammalian species in the riparian zone(i.e.,10 wild and 2 domestic).The riparian corridor was mainly used by opportunistic medium‑sized carnivores,while large carnivores and their potential prey were more frequent in the non‑riparian ***:Our findings suggest terrestrial mammals avoid the use of natural corridors due to the presence of domestic dogs,cattle and humans and look for new dispersal routes to move through their habitat and find the resources they need to *** though some species can use disturbed corridors to move and find resources,they will change their activity patterns to avoid contact with humans and potential threats like *** is,therefore,crucial to identify not one,but several corridors that must be preserved to improve the connectivity of terrestrial mammals in disturbed landscapes.

关键词： Activity Jaguar Cattle Detectability Dog Herbivore Disturbance Prey Relative abundance

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epidemiology of pelvic and acetabular fractures across 12-mo at a level-1 trauma centre

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World Journal of Orthopedics 2022年第8期13卷 744-752页

作者： Rory Cuthbert Samuel Walters David Ferguson edward Karam jonathan Ward Homa Arshad Paul Culpan Peter Bates Department of Trauma and Orthopaedic Surgery Royal London HospitalBarts HealthLondon E11BBUnited Kingdom

BACKGROUND Despite motor-vehicle safety advancements and increasingly rigorous workplace safety regulations,trauma/suicide remains the leading cause of death under the age of 45 in the United *** promote centralisation of care and optimisation of major trauma outcomes,in 2012 the National Health Service introduced the Trauma Network *** our knowledge,this is the first study to analyse the epidemiology of pelvic and acetabular trauma over a one-year period at a level-1 trauma centre in the United Kingdom,since nationwide introduction of the Trauma Network *** To characterize the epidemiology of high-energy pelvic and acetabular fractures over a one-year period at a level-1 trauma centre,and explore both resources required to care for these patients and opportunities for future research and injury prevention *** 227 consecutive patients at a level-1 trauma centre with pelvic and acetabular fractures were analysed between December 2017-December *** patients(ears)and fragility fractures were excluded,leaving 175 patients for inclusion in the *** analysis was performed using Fisher’s exact test for categorical *** 72%of pelvic and acetabular fractures occurred in male patients at a median age of 45 years.15%were the result of a suicide attempt.48%of patients required pelvic or acetabular surgery,with 38%undergoing further surgery for additional orthopaedic injuries.43%of patients were admitted to intensive *** median inpatient stay was 13 days,and the 30-day mortality was 5%.Pelvic ring trauma was more commonly associated with abdominal injury(P=0.01)and spine fractures(Petabular *** shear pelvic ring fractures were associated with falls(P=0.03)while lateral compression fractures were associated with road traffic accidents(P=0.01).CONCLUSION High energy pelvic and acetabular fractures are associated with concomitant orthopaedic fractures(most commonly spine

关键词： Pelvis Acetabulum Orthopedics Multiple trauma Trauma centers

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enhancing Accumulation and Penetration efficiency of Next-Generation Antibiotics to Mitigate Antibiotic Resistance in Pseudomonas aeruginosa PAO1

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Journal of Biomedical Science and engineering 2023年第8期16卷 107-120页

作者： Godspower Oghenemaroh Sebe Supreme O. Oghenerhoro Ogbole e. jonathan ebuka Victor Anyaogu Adeyemo David Adebowale Raymond Chidozie Ntomchukwu Department of Chemical Chemistry and Biomedical Engineering University of New Haven West Haven USA Chemistry and Biochemistry University of Toledo Toledo USA Department of Cell and Molecular Biology University of New Haven West Haven USA Chukwuemeka Odumegwu Ojukwu University Uli Nigeria

This study explores the efficacy of advanced antibiotic compounds against P. aeruginosa, focusing on Antibiotic B, an enhanced derivative of Ceftriaxone. The study measured the intracellular uptake of Antibiotic B and introduced a novel adjuvant, Influximax, which augmented its antibacterial activity. Results showed a diminished potential for resistance emergence with Antibiotic B, particularly when used in combination with Influximax. The study suggests that optimizing antibiotic delivery into bacterial cells and leveraging syner-gistic adjuvant combinations can enhance drug resistance combat. .

关键词： Pseudomonas aeruginosa PAO1 Antibiotic Resistance Next-Generation Antibiotics Adjuvant Synergy Intracellular Accumulation Penetration Rates Minimum Inhibitory Concentration (MIC) Resistance Tra-jectory Fluorescence Quantification

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Health Impacts and Mechanisms of Per- and Polyfluoroalkyl Substances (PFAS) from epidemiological to Toxicological

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Journal of Biosciences and Medicines 2023年第12期11卷 218-240页

作者： Godspower Oghenemaroh Sebe ebuka Victor Anyaogu Adeyemo David Adebowale Raymond Chidozie Ntomchukwu Supreme O. Oghenerhoro Ogbole e. jonathan Department of Chemical Chemistry and Biomedical Engineering University of New Haven West Haven USA Department of Cell and Molecular Biology University of New Haven West Haven USA Department of Chemistry and Biochemistry University of Toledo Toledo USA Department of Chemical engineering Chukwuemeka Odumegwu Ojukwu University Uli Nigeria

This research provides a comprehensive analysis of the health impacts of Per- and Polyfluoroalkyl Substances (PFAS) through an integration of epidemiological and toxicological studies. The study identifies significant correlations between PFAS exposure and adverse health outcomes, including thyroid dysfunction, elevated cholesterol levels, and increased risk of specific cancers. Utilizing a mixed-methods approach, the research combines a systematic review and meta-analysis of recent literature with in vitro and in vivo toxicological experiments. The epidemiological analysis reveals increased risks of thyroid dysfunction, cholesterol elevation, and certain cancers among PFAS-exposed individuals. Toxicological findings further corroborate these results, showing dose-dependent cytotoxic effects in human cell lines and endocrine disruption in rodent models. The study emphasizes the importance of regulatory measures to mitigate PFAS exposure and the urgent need for more comprehensive research into their long-term effects. The integration of epidemiological and toxicological data underscores the significant health risks posed by PFAS, highlighting the necessity of immediate action to limit exposure and develop safer alternatives.

关键词： PFAS Public Health epidemiology Toxicology endocrine Disruption Carcinogenicity environmental Policy Chemical

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