检索结果-南通市图书馆

the effect of white noise on behavioral and flight responses of blue-tailed skinks

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Current Zoology 2021年第1期67卷 125-126页

作者： Connor KELLIGREW Sarah tIAN Marcus WeISS Dana M.WILLIAMS Daniel t.BLUMStEIN Department of Ecology and Evolutionary Biology University of CaliforniaLos AngelesCA90095-1606USA

As human development expands,environments are increasingly exposed to anthropogenic noise which may disrupt animals in a variety of *** noise can be disruptive both as a source of auditory masking,which prevents animals from acquiring acoustic information(Brumm and Slabbekoorn 2005),or as a source of distraction,reallocating an individual's attention and impairing an animal's ability to engage in critical behaviors such as prey risk assessment(Chan et al.2010).

关键词： locating effect critical

Non-Fullerene-Based Inverted Organic Photovoltaic Device with Long-term Stability

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2023年第3期6卷 214-221页

作者： Do Hui Kim Febrian t.A.Wibowo Dongchan Lee Narra V.Krishna Sujung Park Shinuk Cho Sung-Yeon Jang Department of Physics and Energy Harvest Storage Research Center University of UlsanUlsan 44610Republic of Korea School of Energy and Chemical Engineering Ulsan National Institute of Science and Technology(UNIST)50 UNIST-gilUlsan 44919Republic of Korea

In this work,we developed the PM6:Y6-based inverted structure organic photovoltaic(i-OPV)with improved power conversion efficiency(PCE)and long-term stability by resolving the origins of the performance *** deep defects between the metal oxide-based electron transport layer and bulk-heterojunction photoactive layer interface were responsible for suboptimal PCE and facilitated degradation of *** the density of deep traps is increased during the storage of i-OPV,the penetrative oxygen-containing defects additionally generated shallow traps below the band-edge of Y6,causing an additional loss in the open-circuit *** suppression of interfacial defects by chemical modification effectively improved the PCE and long-term stability of *** modified i-OPV(mi-OPV)achieved a PCE of 17.42%,which is the highest value among the reported PM6:Y6-based i-OPV ***,long-term stability was significantly improved:~90%and~80%retention of its initial PCE after 1200 h of air storage and illumination,respectively.

关键词： deep trap inverted structure long-term stability organic photovoltaic power conversion efficiency

DFt Calculations for Electron transfer Bond-breakingReaction of CH_3-X

在线全文

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2001年第4期12卷 347-350页

作者： yu Mei XING Zheng yu ZHOU Ben Ni DU Department of Chemistry Qufu Normal UniversityShandong Qufu 273165 Department of Chemistry Nankai UniversityTianjin 300071 State Key Laboratory of Crystal Materials Shandong UniversityShandongJinan 250100

DFt/6-311 + g** level calculations are performed tp study the electron transfer bond-breaking reaction of CH3-X. the calculated values are in good agreement with the experimental results or the empirical model. through analyzing the change of the energy and the charge densilty along hte reaction path, the bond-breaking in Et reaction for CH3X is investigated.

关键词： electron transfer bond-breaking reaction density functional theory (DFt) CH_(3)X

tailoring the degradation rate of magnesium through biomedical nano-porous titanate coatings

在线全文

学校读者我要写书评

暂无评论

Journal of Magnesium and Alloys 2021年第1期9卷 336-350页

作者： Matthew D.Wadge Jamie McGuire Benjamin V.t.Hanby Reda M.Felfel Ifty Ahmed David M.Grant Advanced Materials Research Group Faculty of EngineeringUniversity of NottinghamNG72RD United Kingdom Physics Department Faculty of ScienceMansoura UniversityMansoura 35516Egyp

A novel approach was developed to reduce the corrosion rate of magnesium(Mg)metal,utilising titanate *** sputtering was used to deposit ca.500 nm titanium(ti)coatings onto pure Mg discs,followed by hydrothermal conversion and ion exchange reactions to produce sodium and calcium titanate *** confirmed the characteristic nanoporous structure of sodium and calcium titanate,with thicknesses ranging from ca.0.8 to 1.4μ*** analysis confirmed the presence of ti^(4+)-O,Na-O,and Ca-O bonding,whilst Raman spectroscopy demonstrated characteristic vibrational modes(such as tiO 6 octahedral vibrations)of the sodium and calcium titanate perovskite ***,corrosion studies through potentiodynamic polarisation measurements demonstrated the NB/NH CatC samples to be superior in reducing Mg degradation,compared to other samples tested,through an increase in E_(corr)from-1.49 to-1.33 V,and the reduction in corrosion current density,i corr,from 0.31 to 0.06 mA/cm^(2)for Mg and NB/NH CatC samples,*** was a clear trend noted for the NB/NH samples,which showed an increase in E corr to more positive values in the following order:Mgti coatedtCtitanate coatings have potential to be applied onto degradable plates for bone fracture fixation,or other orthopaedic applications.

关键词： Magnesium degradation titanate Biodegradable Ion exchange Electrochemical corrosion Magnetron sputtering

Physics of porous materials under extreme laser-generated conditions

在线全文

学校读者我要写书评

暂无评论

Matter and Radiation at Extremes 2024年第3期9卷 1-3页

作者： V.t.tikhonchuk S.Weber Extreme Light Infrastructure ERIC ELI Beamlines Facility25241 DolníBrezanyCzech Republic CELIA University of Bordeaux33405 TalenceFrance

Porous materials offer unique possibilities for the production of plasmas with controlled density profiles for experiments on laser–matter *** are of growing relevance to many applications,such as inertial confinement fusion,fundamental research,and secondary *** the processes of transformation of a porous solid into a plasma is of fundamental interest and is needed for producing materials with desired properties.

关键词： interaction. properties. porous

thermo-Mechanical Influence on the Internal Friction of a 51CrV4 Shaft

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2012年第11期29卷 131-135页

作者： J.Göken I.S.Golovin t.S.Andrianova K.Steinhoff H.Brink Faculty of Maritime Studies University of Applied Sciences Emden-LeerBergmannstrasse 3626789 LeerGermany Department of Physical Metallurgy of Non-Ferrous Metals National Research Technological University'MISIS'119049MoscowLeninskiy Prospekt 4Russia Chair of Metal Forming technology University of KasselKurt-Wolters-Str.334125 KasselGermany

the influence of simultaneously applied mechanical and thermal treatment is used for producing a geometrically complex shaft from 51CrV4 steel resulting in widely differing formations of ***'properties such as internal friction(IF),hardness and electrical resistivity are affected by this change of microstructure *** Snoek–Koster peak is identified and analyzed in the actual steel structure.

关键词： 51CrV4 structure steel

Electrical measurement on individual multi-walled carbon nanotubes

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

中国有色金属学会会刊：英文版 2006年第B02期16卷 772-775页

作者：邹小平 H.ABE t.SHIMIZU A.ANDO H.OKUMOtO 朱申敏周豪慎 Research Center for Sensor technology Beijing Information technology Institute Beijing 100101China Beijing Key Laboratory for Sensor Beijing 100101 China Nanotechnology Research Institute National Institute of Advanced Industrial Science and Technology (AIST) 1-1-1 HigashiTsukubaIbalaki 305-8562Japan Energy Electronics Research Institute National Institute of Advanced Industrial Science and Technology (AIST)1-1-1 UmezonoTsukubaIbalaki 305-8568Japan Energy Electronics Research InstituteNational Institute of Advanced Industrial Science and technology (AISt) 1-1-1 UmezonoTsukubaIbalaki 305-8568Japan Nanotechnology Research InstituteNational Institute of Advanced Industrial Science and technology (AISt) 1-1-1 HigashiTsukubaIbalaki 305-8562Japan Nano-electronics Research Institute National Institute of Advanced Industrial Science and technology (AISt) 1-1-1 Umezono Tsukuba Ibalaki 305-8568 Japan Nanotechnology Research Center Research Institute for Electronic ScienceHokkaido UniversitySapporo 001-0021Japan Energy Electronics Research InstituteNational Institute of Advanced Industrial Science and technology (AISt) 1-1-1 UmezonoTsukubaIbalaki 305-8568Japan Energy Electronics Research Institute National Institute of Advanced Industrial Science and technology (AISt) 1-1-1 Umezono Tsukuba Ibalaki 305-8568Japan

the characterization of electrical property of multi-walled carbon nanotubes (MWCNts) on a nanometer scale is essential for their potential application in nano-electronic devices. the MWCNts were synthesized on Fe2O3/SiO2/Si substrate and Pt plate substrate by simple thermal chemical vapor deposition (StCVD) technique and the electrical measurements of individual MWCNt grown on silicon substrate and Pt plate substrate were performed by home-made 'nano-manipulator', respectively. According to current-voltage curves obtained in the experiments the current density that the MWCNts can carry is calculated to be about 107 A/cm2, which is much larger than that of normal metals.

关键词：多壁碳纳米管电学测量简易热化学汽相沉积合成

Non-invasive transcutaneous electrical stimulation in the treatment of overactive bladder

在线全文

学校读者我要写书评

暂无评论

Asian Journal of Urology 2015年第2期2卷 92-101页

作者： Martin Slovak Christopher R.Chapple Anthony t.Barker Department of Medical Physics&Clinical Engineering Sheffield Teaching Hospitals NHS Foundation TrustSheffieldUK Department of Urology Sheffield Teaching Hospitals NHS Foundation TrustSheffieldUK

We reviewed the literature on transcutaneous electrical nerve stimulation(tENS)used as a therapy for overactive bladder(OAB)symptoms,with a particular focus on:stimulation site,stimuli parameters,neural structures thought to be targeted,and the clinical and urodynamic outcomes *** majority of studies used sacral or tibial nerve *** literature suggests that,whilst tENS therapy may have neuromodulation effects,patient are unlikely to benefit to a significant extent from a single application of tENS and indeed clear benefits from acute studies have not been *** long-term studies there were differences in the descriptions of stimulation intensity,strategy of the therapy,and positioning of the electrodes,as well as in the various symptoms and pathology of the ***,most studies were uncontrolled and hence did not evaluate the placebo *** is known about the underlying mechanism by which these therapies work and therefore exactly which structures need to be stimulated,and with what *** is promising evidence for the efficacy of a transcutaneous stimulation approach,but adequate standardisation of stimulation criteria and outcome measures will be necessary to define the best way to administer this therapy and document its efficacy.

关键词： Overactive bladder Posterior tibial nerve stimulation Sites of stimulation Sacral stimulation Sham stimulation methodology Surface electrodes transcutaneous electrical nerve stimulation

Controlling infection in predator-prey systems with transmission dynamics

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Infectious Disease Modelling 2020年第1期5卷 1-11页

作者： M.-G.Cojocaru t.Migot A.Jaber Department of Mathematics and Statistics University of GuelphGuelphONN1G 2W1Canada Department of Mathematics College of ScienceUniversity of Al-MustansiriyahBaghdadIraq

We propose in this paper a prophylactic treatment strategy for a predator-prey *** objective is to fight against the propagation of an infectious disease within two populations,one of which preys on the *** propagation is modeled by means of an SIS(susceptible-infectious-susceptible)epidemic model with vital dynamics and infection propagation in both species through contact and predation,including mortality rates in both populations due directly to the *** strategies are represented by new parameters modeling the uptake rates in the *** analyze the effect of various treatment strategy scenarios(prey only,predator only,or both)via their uptake rates and possible cost structures,on the size of the infected *** illustrate if and when applying such preventive treatments lead to a disease prevalence drop in both *** conduct our study using an optimal control model seeking to minimize the treatment cost(s),subject to the transmission dynamics and predator-prey dynamics.

关键词： dynamics. predator dynamics