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A Multiresponsive Transformation between Surfactant-Based Coacervates and Vesicles

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CCS Chemistry 2021年第12期3卷 358-366页

作者： Lili Zhou Yaxun Fan Zhang Liu Lina Chen evan Spruijt Yilin Wang CAS Key Laboratory of Colloid Interface and Chemical ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesBeijing National Laboratory for Molecular ScienceInstitute of ChemistryChinese Academy of SciencesBeijing 100190 University of Chinese Academy of Sciences Beijing 100049 Institute for Molecules and Materials Radboud University6525 AJ Nijmegen

Low-molecular weight surfactants have significant potential as building blocks for prebiotic ***,reports about surfactant-based coacervates as protocell models capable of reversible transformation are ***,we develop a simple system made of a surfactant(-)-n-dodecyln-methylephedrinium bromide(DMEB)and inorganic salts that is capable of spontaneous formation of vesicles,coacervates,and the reversible transformation between the two states.

关键词： coacervates sequestration microreactors reversible transformation vesicles

Pulse Laser Deposition of HfO_(2)nanoporous-Like Structure,Physical Properties for Device Fabrication

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Journal of Renewable Materials 2022年第11期10卷 2819-2834页

作者： Shams B.Ali Sarmad Fawzi Hamza Alhasan evan T.Salim Forat H.Alsultany Omar S.Dahham Laser and Optoelectronic Engineering Department University of TechnologyBaghdadIraq Applied Science Department University of TechnologyBaghdadIraq Al-Mustaqbal University College Department of Medical PhysicsHillahIraq Center of Excellence Geopolymer and Green Technology Faculty of Engineering TechnologyUniversiti Malaysia PerlisPerlisMalaysia Department of Civil Engineering College of EngineeringCihan University-ErbilKurdistan RegionIraq

The pulsed laser deposition(PLD)technology was used to effectively create conductive nano and micro hafnium oxide with great purity and transparency for(HfO_(2))*** many optoelectronics devices and their applications,the presence of a high dielectric substance like a nano HfO2,between the metal contacts and the substrates was *** used the Pulsed Laser Deposition method to fabricate an Al/HfO_(2)/p-Si Schottky barrier diode where the nanostructured HfO2 films as an intermediate layer and varied substrate *** optical result reveals a high degree of transparency(93%).The optical bandgap of deposited HfO2 films was observed to vary between 4.9 and 5.3 eV,with a value of roughly 5.3 eV at the optimal preparation *** morphology of the surface shows a high homogeneous nano structure with the average values of the roughness about(0.3 nm).With regard to substrate temperature,the produced factor ideality for fabricated diode was determined to be lowering and the associated values of the barrier height rose based on *** regard to substrate temperature,the produced factor ideality for fabricated diode was determined to be lowering and the associated values of the barrier height rose based on I-V *** diode manufactured at 600℃,in particular,had a higher ideality factor value(n=3.2).

关键词： Pulse laser deposition nano films optoelectronics HfO_(2) optical device

Weave geometry generation avoiding interferences for mesoscale RVEs

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Journal of Materials Science & Technology 2019年第12期35卷 2869-2882页

作者： Daniel Höwer Shengkai Yu Trenton M.Ricks Brett A.Bednarcyk evan J.Pineda Bertram Stier Stefanie Reese Jaan-Willem Simon Institute of Applied Mechanics RWTH Aachen University52074 AachenGermany nASA Glenn Research Center ClevelandOH 44135USA Collier Research and Development Corporation Newport NewsVA 23606USA

An algorithm which allows the generation of representative volume elements(RVEs) for complex woven and warp-interlaced fiber-reinforced composite topologies while avoiding unphysical tow intersections is presented. This is achieved by extending an existing RVE generation strategy in two significant ways:(1) the local cross section shape of the tow is adjusted depending on the local tow curvature in a way that preserves the cross sectional area of the tow, and(2) the elementary crimp interval is separated into a planar and a transition region. The modifications facilitate the generation of a wide range of elaborate textile topologies without tow intersections, which are present without the proposed modifications unless complex tow to tow contact models are introduced. The mechanical properties of plain weaves were predicted based on the topology generated with the proposed algorithm as well as based on RVEs which were constructed based on actual micrographs, i.e. a "digital twin" of the actual microstructure. A comparison of the predicted mechanical properties based on finite element and Multiscale Generalized Method of Cells techniques shows close agreement. However, some differences exist with respect to experimentally determined material parameters due to the finite dimensions of the specimens. Lastly,mechanical properties of multilayered weaves are predicted with the finite element method. The considered material systems are carbon fiber in epoxy matrix as well as C/C-SiC. However, the procedure is applicable to a wide range of material systems.

关键词： RVE generation Multiscale analysis Composites

Safety and Immunogenicity of SARS-CoV-2 mRnA-1273 Vaccine in Older Adults

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四川生理科学杂志 2020年第4期42卷 468-468页

作者： evan J Anderson From the Center for Childhood Infections and Vaccines of Children’s Healthcare of Atlanta and the Department of Pediatrics Emory University School of Medicine (E.J.A. V.V.E. K.F. M.S.S. C.A.R.) and Emory Vaccine Center Yerkes National Primate Research Center Emory University (M.S.S.) Atlanta and Hope Clinic Department of Medicine Emory University School of Medicine Decatur (E.J.A. N.G.R. V.K.P.) — both in Georgia the Vaccine Research Center (A.T.W. A.B.M. B.F. B.C.L. N.A.D.-R. S.O. S.D.S. K.S.C. P.A.S. M.P. J.E.L. B.S.G.) and the Division of Microbiology and Infectious Diseases (P.C.R. M. Makhene W.B. C.J.L. J.H.B.) National Institute of Allergy and Infectious Diseases National Institutes of Health Bethesda the University of Maryland School of Medicine Baltimore (K.M.N.) and the Emmes Company Rockville (M. Makowski J.A. K.C.) — all in Maryland Kaiser Permanente Washington Health Research Institute Seattle (L.A.J.) the Department of Pediatrics (J.D.C. M.R.D. L.J.S. A.J.P.) the Vanderbilt Institute for Infection Immunology and Inflammation (J.D.C. M.R.D. A.J.P.) and the Departments of Pathology Microbiology and Immunology (M.R.D.) Vanderbilt University Medical Center Nashville Moderna Cambridge MA (H.B. B.L.) and the Departments of Epidemiology and Microbiology and Immunology University of North Carolina at Chapel Hill Chapel Hill (D.R.M. R.B.).

Background:Testing of vaccine candidates to prevent infection with severe acute respiratory syndrome coronavirus 2(SARS-CoV-2)in an older population is important,since increased incidences of illness and death from co... 详细信息

关键词： vaccine acute respiratory

Dupilumab in Adults and Adolescents with Eosinophilic Esophagitis

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四川生理科学杂志 2022年第12期44卷 2116-2116页

作者： evan S Dellon From the Center for Esophageal Diseases and Swallowing University of North Carolina School of Medicine Chapel Hill (E.S.D.) Cincinnati Children’s Hospital Medical Center and University of Cincinnati College of Medicine Cincinnati (M.E.R. M.H.C.) northwestern University Feinberg School of Medicine Chicago (I.H.) Mount Sinai Center for Eosinophilic Disorders Icahn School of Medicine at Mount Sinai New York (M.C.) and Regeneron Pharmaceuticals Tarrytown (X.S. M.P.K. M.A.K. J.D.H. B.B. E.M. B.A. N.A. W.K.L. M.F.W. M.R. D.R.W. G.D.Y. B.S. J.M. A.G. A.S.) — both in New York Amsterdam University Medical Center Amsterdam (A.J.B.) Hospital General de Tomelloso Centro de Investigación Biomédica en Red en Enfermedades Hepáticas y Digestivas Madrid and Instituto de Investigación Sanitaria de Castilla–La Mancha Toledo — both in Spain (A.J.L.) Children’s Hospital of Philadelphia Philadelphia (J.M.S.) University of California San Diego La Jolla and Rady Children’s Hospital San Diego — both in California (S.A.) Sanofi Bridgewater NJ (K.P. E.L.) Sanofi Chilly-Mazarin France (L.P.M.) and Sanofi Cambridge MA (N.P.).

Background:Dupilumab,a fully human monoclonal antibody,blocks interleukin-4 and interleukin-13 signaling,which have key roles in eosinophilic ***:We conducted a three-part,phase 3 trial in which patients 12 years of age or older underwent randomization in a 1:1 ratio to receive subcutaneous dupilumab at a weekly dose of 300 mg or placebo(Part A)or in a 1:1:1 ratio to receive 300 mg of dupilumab either weekly or every 2 weeks or weekly placebo(Part B)up to week 24.

关键词： monoclonal placebo weekly

Two-color multiphoton in vivo imaging with a femtosecond diamond Raman laser

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Light(Science & Applications) 2017年第1期6卷 400-407页

作者： evan P Perillo Jeremy W Jarrett Yen-Liang Liu Ahmed Hassan Daniel C Fernée John R Goldak Andrei Bonteanu David J Spence Hsin-Chih Yeh Andrew K dunn Department of Biomedical Engineering The University of Texas at AustinTX 78712USA Department of Physics The University of Texas at AustinTX 78712USA MQ Photonics Department of Physics and AstronomyMacquarie UniversitySydneyNSW 2109Australia

Two-color multiphoton microscopy through wavelength mixing of synchronized lasers has been shown to increase the spectral window of excitable fluorophores without the need for wavelength ***,most currently available dual output laser sources rely on the costly and complicated optical parametric generation *** this report,we detail a relatively simple and low cost diamond Raman laser pumped by a ytterbium fiber amplifier emitting at 1055 nm,which generates a first Stokes emission centered at 1240 nm with a pulse width of 100 *** two excitation wavelengths of 1055 and 1240 nm,along with the effective two-color excitation wavelength of 1140 nm,provide an almost complete coverage of fluorophores excitable within the range of 1000–1300 *** compared with 1055 nm excitation,two-color excitation at 1140 nm offers a 90%increase in signal for many far-red emitting fluorescent proteins(for example,tdKatushka2).We demonstrate multicolor imaging of tdKatushka2 and Hoechst 33342 via simultaneous two-color two-photon,and two-color three-photon microscopy in engineered 3D multicellular *** further discuss potential benefits and applications for two-color three-photon *** addition,we show that this laser system is capable of in vivo imaging in mouse cortex to nearly 1 mm in depth with two-color excitation.

关键词： microscopy nonlinear processes three-dimensional imaging ultrafast lasers

Uniformly dispersed FeOx atomic clusters by pulsed arc plasma deposition： An efficient electrocatalyst for improving the performance of Li-O2 battery

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nano Research 2016年第7期9卷 1913-1920页

作者： Xiangyi Luo Jun Lu evan Sohm Lu Ma Tianpin Wu Jianguo Wen Dantong Qiu YunKai Xu Yang Ren Dean J. Miller Khalil Amine Material Sciences Division Argonne National Laboratory Argonne IL 60439 USA Chemical Sciences and Engineering Division Argonne National Laboratory Argonne IL 60439 USA ULVAC Technologies Inc. Methuen MA 01844 USA Center for n anoscale Materials Nanoscience and Technology Argonne National Laboratory Argonne IL 60439 USA Advanced Photon Source Argonne National Laboratory Argonne IL 60439 USA Center for nanoscale Materials Nanoscience and Technology Argonne Notional Laboratory Argonne IL 60439 USA

The present study explored a new method to improve the catalytic activity of non-precious metals, especially in electrochemical reactions. Highly ionized Fe plasma produced by arc discharge was uniformly deposited on a porous carbon substrate and formed atomic clusters on the carbon surface. The as-prepared FeO~/C material was tested as a cathode material in a rechargeable Li-02 battery under different current rates. The results showed significant improvement in battery performance in terms of both cycle life and reaction rate. Furthermore, X-ray diffraction （XRD） and scanning electron microscopy （SEM） results showed that the as-prepared cathode material stabilized the cathode and reduced side reactions and that the current rate was a critical factor in the nucleation of the discharge products.

关键词： Li-O2 battery FeOx atomic cluster electrocatalyst pulsed arc plasmadeposition (APD)

Effects of prepartal oronasal administration of lipopolysaccharide on milk composition and productivity of transition Holstein dairy cows

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Open Journal of Animal Sciences 2013年第3期3卷 200-209页

作者： Summera Iqbal Qendrim Zebeli Dominik A. Mansmann Suzanna M. dunn Burim n. Ametaj Department of Agricultural Food and Nutritional Science University of Alberta Edmonton Canada Institute of Animal nutrition and Functional Plant Compounds Department for Farm Animals and Veterinary Public Health Vetmeduni Vienna Vienna Austria

The aim of this study was to evaluate the effects of repeated oronasal administration of lipopolysaccharide (LPS) on milk composition and the overall productive performance of dairy cows. One hundred pregnant Holstein dairy cows were randomly assigned to two treatment groups (n = 50). 30 cows out of 100 were selected for intensive sampling (n = 15) starting at 28 d before parturition. Cows were administered orally and nasally with 2 and 1 mL of saline solution, respectively (control), or saline solution containing 3 doses of LPS from Escherichia coli 0111:B4 as follows: 1) 0.01 μg/kg body weight (BW) on d ﹣28, 2) 0.05 μg/kg BW on d ﹣25 and ﹣21, and 3) 0.1 μg/kg BW on d ﹣18 and ﹣14. Daily feed intake and milk production were recorded for each cow during the first 28 d postpartum. Milk samples were obtained once per week and analyzed for various milk components. Overall, results indicated that treatment did not affect feed intake, milk yield, milk efficiency, fat content, fat yield, protein content, protein yield, lactose content, lactose yield, milk urea nitrogen (MUn), total solid contents, fat-corrected milk (FCM), and energy-corrected milk (ECM;P > 0.05). However, milk somatic cell count (SCC) tended to be lower in the treated cows (P eek interaction for milk energy (P = 0.03), and tendencies for FCM, ECM, lactose content, and milk efficiency

关键词： Lipopolysaccharide Oronasal Milk Composition Dairy Cows

Oronasal administration of lipopolysaccharide prepartum modulated plasma metabolite patterns in periparturient dairy cows

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Open Journal of Animal Sciences 2013年第3期3卷 184-192页

作者： Summera Iqbal Qendrim Zebeli Dominik A. Mansmann Suzanna M. dunn Burim n. Ametaj Department for Farm Animals and Veterinary Public Health Institute of Animal Nutrition and Functional Plant Compounds Vienna Austria Department of Agricultural Food and Nutritional Science University of Alberta Edmonton Canada

The objective of this study was to evaluate whether repeated oronasal administration of LPS before parturition showed effects on metabolic and clinical responses in periparturient dairy cows. Hundred Holstein dairy cows were randomly allocated to two treatment groups (n = 50). Thirty cows out of 100 were randomly assigned for intensive sampling (n = 15) started at 28 d before the expected day of parturition. Cows received an oral and a nasal treatment of 2 mL and 1 mL of sterile saline solution (0.15 M of naCl), respectively, alone (control), or containing 3 increasing doses of LPS from Escherichia coli 0111:B4 as follows: 1) 0.01 μg/kg body weight (BW) on d ﹣28, 2) 0.05 μg/kg BW on d ﹣25, and ﹣21, and 3) 0.1 μg/kg BW on d ﹣18 and ﹣14. Blood samples were collected from coccygeal vein at different time points around parturition and analyzed for glucose, lactate, non-esterified fatty acids (nEFA), cholesterol, and betahydro-xybutyrate (BHBA). Clinical monitoring of animals was done throughout the experiment at different time points for overall health status, udder edema (UE), manure score, and body condition score (BCS). Results showed that oronasal administration of LPS increased concentrations of glucose and cholesterol in the serum compared to the control group (P 0.05). Oronasal LPS did not influence BCS, manure score or the incidence of UE (P > 0.05). Overall, repeated oronasal administration of LPS modulated some serum metabolites related to energy metabolism around parturition in the treated cows. Further research is warranted to elucidate the mechanisms behind greater glucose and cholesterol status in the serum and their potential effects on long-term metabolic health status of dairy cows.

关键词： Lipopolysaccharide Oronasal Dairy Cows