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KCl:Eu^(2+) as a solar Uv-C radiation dosimeter. Optically stimulated luminescence and thermoluminescence analyses

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Journal of Rare Earths 2009年第4期27卷 579-583页

作者： I.Aguirre de Cárcer h.L.D'Antoni M.Barboza-flores v.Correcher f.Jaque Departamento física de Materiales Universidad Autónoma Madrid Spain NASA Ames Research Center Moffett Field California USA Centro de Investig ción en física Universidad de Sonora México Centro Investigaciones Energía y Medioambientales (CIEMAT) Madrid Spain

The KCI：Eu2＋ system response to Uv-C was investigated by analyzing the optically stimulated luminescence （OSL） and ther- mo-luminescence （TL） signal produced by ultraviolet light exposure at room temperature. It was found that after Uv-C ***, OSL was produced on a wide band of visible wavelengths with decay time that varied by several orders of magnitude depending on the Eu2＋ aggregation state. In spite of the low intensity of solar Uv-C reaching the Earth＇s surface in Madrid （40° N, 700 m a.s.1.）, it was possible to measure the Uv-C radiation dose at 6：48 solar time by using the TL response of the KCI：Eu2＋ system and differentiate it from the ambient beta radiation dose.

关键词： thermo-luminescence rare-earth-doped alkali halides solar ultraviolet dosimeter environmental radiation

Investigation of crack segmentation and fast evaluation of crack propagation, based on deep learning

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frontiers of Structural and Civil Engineering 2024年第4期18卷 516-535页

作者： Than v.TRAN h.NGUYEN-XUAN Xiaoying ZhUANG Institute of Photonics Leibniz University HannoverHannover 30167Germany CIRTech Institute HUTECH UniversityHo Chi Minh City 700000Vietnam College of Civil Engineering Tongji UniversityShanghai 200092China

Identifying crack and predicting crack propagation are critical processes for the risk assessment of engineering *** traditional approaches to crack modeling are faced with issues of high computational costs and excessive computing *** address this issue,we explore the potential of deep learning(DL)to increase the efficiency of crack detection and forecasting crack ***,there is no single algorithm that can fit all data sets well or can apply in all cases since specific tasks *** the paper,we present DL models for identifying cracks,especially on concrete surface images,and for predicting crack ***,SegNet and U-Net networks are used to identify concrete *** gradient descent(SGD)and adaptive moment estimation(Adam)algorithms are applied to minimize loss function during ***,time series algorithms including gated recurrent unit(GRU)and long short-term memory(LSTM)are used to predict crack *** experimental findings indicate that the U-Net is more robust and efficient than the SegNet for identifying crack segmentation and achieves the most outstanding *** evaluation of crack propagation,GRU and LSTM are used as DL models and results show good agreement with the experimental data.

关键词： deep learning crack segmentation crack propagation encoder−decoder recurrent neural network

Effects of Low Anisotropy on Generalized Ghost Dark Energy in Galileon Gravity

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Communications in Theoretical Physics 2018年第4期69卷 467-476页

作者： h.hossienkhani v.fayaz A.Jafari h.Yousefi Department of Physics Hamedan Branch Islamic Azad University Department of Science Hamedan University of Technology

The definition of the Galileon gravity form is extended to the Brans-Dicke theory. Given, the framework of the Galileon theory, the generalized ghost dark energy model in an anisotropic universe is investigated. We study the cosmological implications of this model. In particular, we obtain the equation of state and the deceleration parameters and a differential equation governing the evolution of this dark energy in Bianchi type I model. We also probe observational constraints by using the latest observational data on the generalized ghost dark energy models as the unification of dark matter and dark energy. In order to do so, we focus on observational determinations of the hubble expansion rate(namely, the expansion history) h(z). As a result, we show the influence of the anisotropy(although low) on the evolution of the universe in the statefinder diagrams for Galileon gravity.

关键词： anisotropic universe generalized ghost dark energy galileon gravity Bianchi type I statefinder diagrams

Stability of Macroscopic Binary Systems

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Communications in Theoretical Physics 2019年第11期71卷 1335-1340页

作者： G.G.Adamian N.v.Antonenko h.Lenske v.v.Sargsyan Joint Institu te for Nuclear Research 141980 DubnaRussia Ins titut fur Theore tische Physik der Jus tus-Liebig—Uni versit Nt D-35392 GiessenGermany

The Darwin instability effect in the binary systems(di-planets, di-stars, and di-galaxies) is analyzed within the model based on the Regge-like laws. All possible binary stars are found satisfying the Darwin instability condition that requires to search for other mechanism triggering the merger of the contact binary objects. New analytical formulas are obtained for the orbital rotation period and the relative distance between components of the binary system. The decreasing and increasing periods as functions of mass asymmetry are related, respectively, with the non-overlapping and overlapping stage of the binary object evolution.

关键词： Regge laws binary stars and galaxies Darwin instability effect

ferrofluid nucleus phase transitions in an external uniform magnetic field

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Chinese Physics B 2015年第10期24卷 322-330页

作者： B.M.Tanygin S.I.Shulyma v.f.Kovalenko M.v.Petrychuk faculty of Radiophysics Taras Shevchenko National University of Kyiv

The phase transition between a massive dense phase and a diluted superparamagnetic phase has been studied by means of a direct molecular dynamics simulation. The equilibrium structures of the ferrofluid aggregate nucleus are obtained for different values of a temperature and an external magnetic field magnitude. An approximate match of experiment and simulation has been shown for the ferrofluid phase diagram coordinates ＂field-temperature＂. The provided phase coexistence curve has an opposite trend comparing to some of known theoretical results. This contradiction has been discussed. for given experimental parameters, it has been concluded that the present results describe more precisely the transition from linear chains to a dense globes phase. The theoretical concepts which provide the opposite binodal curve dependency trend match other experimental conditions： a diluted ferrofluid, a high particle coating rate, a high temperature,and/or a less particles coupling constant value.

关键词： ferrofluid aggregate phase diagram molecular dynamics

Quantification of phenolic compounds and antioxidant capacity of an underutilized Indian fruit:Rayan[Manilkara hexandra(Roxb.)Dubard]

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food Science and human Wellness 2017年第1期6卷 10-19页

作者： Bhumi Parikh v.h.Patel Laboratory of foods and Nutrition P.G.Department of Home ScienceSardar Patel UniversityVallabh Vidyanagar388120 GujaratIndia

The fruit of Manilkara hexandra(Roxb.)Dubard is one of the most underutilized fruits of India and in Gujarat *** is popularly known as‘Rayan’.The fruit and seed of Rayan were analysed for their total phenolic and flavonoid content,phenolic compounds and total antioxidant capacity with six different assay *** results indicated that the methanolic extract of Rayan fruit being a good source of phenolic(811.3 mg GAE/100 g fw)and flavonoid(485.56 mg RE/100 g fw)***,eleven known phenolic compounds were tentatively identified for the first time from the fruit and seed of *** LC–MS/MS analysis of fruit revealed the presence of major phenolic compounds such as gallic acid,quercetin and kaempferol,while quercetin,gallic acid and vanillic acid in *** presence of quercetin suggests health *** fruit of Rayan was also proved to be a better source of antioxidants as measured by fRAP,RPA,DPPhRSA,ABTSRSA and hRSA except NORSA in comparison with that of *** current study explains that *** is a relatively good source of antioxidants such as phenols and flavonoids for diet.

关键词： Manilkara hexandra(Roxb.)Dubard Underutilized fruit high performance liquid chromatography–mass spectrometry Phenolic compounds Total antioxidant capacity

Effects of Silicon Nanoparticles on the Transient Liquid Phase Bonding of 304 Stainless Steel

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Journal of Materials Science & Technology 2014年第3期30卷 259-262页

作者： h.M.hdz-García A.I.Martinez R.Mu?oz-Arroyo J.L.Acevedo-Dávila f.García-vázquez f.A.Reyes-valdes Corporación Mexicana de Investigación en Materiales S.A.de C.v. Ciencia y Tecnología No.790 Fracc.Saltillo 400 Saltillo Coah.CP.25290 Mexico Centro de Investigación y de Estudios Avanzados del IPN Carr.Mty-Saltillo km.13 Ramos Arizpe Coah.CP.25900 Mexico

Transient liquid phase （TLP） bonding of 304 stainless steel with nickel based filler metal, BNi-9, was performed to study the influence of silicon nanoparticles （NPs） on the mechanical and structural properties of the bonding area. It was found that silicon NPs act as a melting point depressant in the brazing process; the formation of silicon TLP induces the dissolution of elements of the metal filler and promotes a uniform distribution in the bonding area. Silicon NPs induce the development of smaller eutectic structures in the melting zone; it has been related to microhardness measurements, which are lower when the silicon NPs are used in the brazing process.

关键词： Brazing Nanoparticles Silicon Stainless steel

Rationale and design of Tenecteplase Reperfusion Therapy in Acute Ischaemic Cerebrovascular Events III (TRACE III): a randomised, phase III, open- label, controlled trial

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Stroke & vascular Neurology 2024年第1期9卷 82-89页

作者： Yunyun Xiong Bruce C v Campbell Marc fisher lee h Schwamm Mark Parsons hao Li Yuesong Pan Xia Meng Xingquan Zhao Yongjun Wang Neurology Beijing Tiantan HospitalBeijingChina China National Clinical Research Center for Neurological Diseases BeijingChina Department of Medicine and Neurology The University of MelbourneMelbourneVictoriaAustralia Neurology Beth Israel Deaconess Medical CenterBostonMassachusettsUSA Department of Neurology and Comprehensive Stroke Center Massachusetts General HospitalBostonMassachusettsUSA Department of Neurology University of New South Wales South Western Sydney Clinical SchoolLiverpoolNew South WalesAustralia

Background and purpose Recombinant human TNK tissue-type plasminogen activator(rhTNK-tPA)was not inferior to alteplase for ischaemic stroke within *** study aimed to investigate the efficacy and safety of rhTNK-tPA in patients who had an ischaemic stroke due to large vessel occlusion(LvO)of anterior circulation beyond *** and design Tenecteplase Reperfusion Therapy in Acute Ischaemic Cerebrovascular Events-III(TRACE III)is a multicentre,prospective,randomised,open-label,blind endpoint,controlled clinical *** who had an ischaemic stroke due to anterior circulation LvO(internal carotid artery,middle cerebral artery M1 and M2 segments)within 4.5–24hours from last known well(including wake-up stroke and no witness stroke)and with salvageable tissue(ischaemic core volumeh ratio≥1.8 and mismatch volume≥15mL)based on CT perfusion or MRI perfusion-weighted imaging(PWI)were included and randomised to rhTNK-tPA 0.25mg/kg(single bolus)to a maximum of 25mg or standard medical ***,we will exclude patients who are intended for direct *** will be followed up for 90 *** outcomes Primary efficacy outcome is modified Rankin Scale(mRS)score≤1 at 90 *** efficacy outcomes include ordinal distribution of mRS at 90 days,major neurological improvement defined by a decrease≥8 points compared with the initial deficit or a score≤1 on the National Institutes of health Stroke Scale(NIhSS)at 72 hours,mRS score≤2 at 90 days,the rate of improvement on Tmax>6s at 24 hours and NIhSS score change from baseline at *** outcomes are symptomatic intracerebral haemorrhage within 36 hours and mortality at 90 *** TRACE III will provide evidence for the efficacy and safety of rhTNK-tPA in patients who had an ischaemic strokes due to anterior circulation LvO beyond *** registration number NCT05141305.

关键词： Therapy random Rational

Large signal of h → μτ within the constraints of e_(i) → e_(j)γ decays in the 3-3-1 model with neutral leptons

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Chinese Physics C 2022年第12期46卷 106-125页

作者： h.T.hung D.T.Binh h.v.Quyet Department of Physics Hanoi Pedagogical University 2Phuc YenVinh Phuc 15000Vietnam Institute of Theoretical and Applied Research Duy Tan UniversityHanoi 10000Vietnam faculty of Natural Science Duy Tan UniversityDa Nang 50000Vietnam

In the framework of the 3-3-1 model with neutral leptons,we investigate lepton-flavor-violating sources based on the higgs mass spectrum,which has two neutral higgs identified with the corresponding ones of the two-higgs-doublet *** note that at the 13Tev scale of the LhC,the parameter space regions satisfy the experimental limits of e_(i)→e_(j)γ*** regions depend heavily on the mixing of exotic leptons but are predicted to have large h_(1)^(0)→μτ*** also show that Br(h_(1)^(0)→μτ)can reach a value of 10^(-4).

关键词： higgs boson electroweak interaction beyond the SM Lfv decays