Search results for: Hongzhi Zhang

Items from 1 to 20 out of 112 results

article

Cold storage of Spodoptera litura eggs and Telenomus remus adults for improving mass‐rearing efficiency

Wanbin Chen, Hongzhi Zhang, Xiaoyu Jing, Yuyan Li, more

Journal of Applied Entomology > 146 > 5 > 626 - 635

Telenomus remus (Nixon) has shown promising potential as a biological control agent for the major invasive agricultural pest, Spodoptera frugiperda (J. E. Smith). Application of biological control programmes in the field requires an efficient mass‐rearing system to provide sufficient numbers of beneficial insects. The short longevity of parasitoid adults and limited period of availability of host...

article

Modeling of microstructural effects on the creep of hardened cement paste using an experimentally informed lattice model

Yidong Gan, Claudia Romero Rodriguez, Hongzhi Zhang, Erik Schlangen, more

Computer‐Aided Civil and Infrastructure Engineering > 36 > 5 > 560 - 576

This paper presents a method to numerically investigate the microstructural effect on the creep behavior of cement paste at the microscale. The lattice fracture model is extended to consider local time‐dependent deformations of calcium‐silicate‐hydrate phases in the cement paste by imposing local forces. The term “experimentally informed model” is used herein as the heterogeneous microstructures of...

article

Online non-negative discriminative dictionary learning for tracking

Weisong Wang, Fei Yang, Hongzhi Zhang

EURASIP Journal on Advances in Signal Processing > 2019 > 2019 > 1 > 1-12

In this paper, online non-negative discriminative dictionary learning for tracking is proposed, which combines the advantages of the global dictionary learning model and the class-specific dictionary learning model. The previous algorithm based on general dictionary learning does not take into account the inter-class relations between classes and make full use of tag information. In order to improve...

article

Improving ferroelectricity and ferromagnetism of PVDF‐CoFe₂O₄ thick films: Effect of Ethyl acetate and Temperature

Libo Wang, Yuchang Su, Jing Zhang, Hongzhi Zhang, more

Journal of Applied Polymer Science > 137 > 6 > n/a - n/a

PVDF‐CoFe₂O₄(CFO) thick membranes were synthesized by solvent casting method. The mixed organic solvents consist of N‐methyl‐2‐pyrrolidone (NMP) and Ethyl acetate (EA), in which the mass ratios of NMP and EA (NMP:EA = 1:0, 1:1, and 1:2) and the temperature of solvent evaporation (range from 50 to 80 °C) has been considered. The phase structure, β‐PVDF phase content, and electrical and magnetic properties...

article

Bi-phase metallic cobalt with efficient broadband absorption in X and Ku bands

Jing Zhang, Yuchang Su, Hongzhi Zhang, Libo Wang, more

Journal of Materials Science: Materials in Electronics > 2019 > 30 > 19 > 18268- 18279

Broadband and lightweight microwave absorbers have gained considerable research interest in overcoming electromagnetic interference pollution. Here, mixture of two phase (fcc and hcp) metallic cobalt powders with broadband absorption was synthesized through solvothermal method using ethylene glycol as the reducing agent. The effect of NaOH content on the structure and morphology of the prepared Co...

article

Automated hazard escaping trajectory planning/tracking control framework for vehicles subject to tire blowout on expressway

Ming Yue, Lu Yang, Hongzhi Zhang, Gang Xu

Nonlinear Dynamics > 2019 > 98 > 1 > 61-74

This paper proposes an automated hazard escaping trajectory planning/tracking control framework for the vehicle subject to tire blowout on expressway by hierarchically introducing detector, planner, controller. Firstly, a detector is presented for seeking the hazard escaping opportunity by collecting and processing the information from onboard sensor, vehicle-to-vehicle and vehicle-to-infrastructure...

article

Nitrogen deposition suppresses fungal biomass and oxidase activity in faeces of the millipede Spirobolus formosae in a temperate forest

Mengru Wang, Shenglei Fu, Hongzhi Zhang, Meina Wang, more

Soil Ecology Letters > 2019 > 1 > 1-2 > 42-49

Atmospheric nitrogen (N) deposition has increased dramatically since the industrial revolution due to humanactivities. Interrestrial ecosystems, excess nitrogeninputs cangreatly affectsoil chemical properties, plant growth, and activities of soil microbes and fauna. Millipedes can fragment and consume large quantities of litter, and they regulate nutrient cycling and affect soil fertility through...

article

Intercultural challenges, intracultural practices: how Chinese and Australian students understand and experience intercultural communication at an Australian university

Yu Tim God, Hongzhi Zhang

Higher Education > 2019 > 78 > 2 > 305-322

In recent years, over half a million Chinese students travelled abroad to study, making China the largest source of international students in the global higher education market. A large Chinese population on campus does not, however, generate prolific interactions between them and local students. Language barriers and cultural distance are frequently cited in the literature as factors that hinder...

article

Photoluminescence properties and site-preferable distribution of Ce3+ in Na2Ca1-xSrxSi2O6 (x = 0–1) blue-emitting phosphors

Hongzhi Zhang, Xinmin Zhang, Zhe Cheng, Yang Xu, more

Journal of Alloys and Compounds > 2018 > 764 > C > 853-860

Two Ce³⁺ doped sodium strontium (calcium) silicates, Na₂SrSi₂O₆:Ce³⁺ and Na₂CaSi₂O₆:Ce³⁺, were prepared by high temperature solid state reaction. They both crystallize in trigonal crystal system with space group R3¯m. Substitution of three independent Ca²⁺ sites for Ce³⁺ ions yields blue emission when excited by UV light (λ_ex = 352 nm). Accordingly, Ce³⁺ ions occupying two distinct Sr²⁺ sites generate...

article

Towards understanding stochastic fracture performance of cement paste at micro length scale based on numerical simulation

Hongzhi Zhang, Branko Šavija, Erik Schlangen

Construction and Building Materials > 2018 > 183 > C > 189-201

This work presents a study of stochastic fracture properties of cement paste at the micro length scale based on a combination of X-ray computed tomography (XCT) technique and discrete lattice type fracture model. Thirty virtual specimens consisting of pore, outer hydration products, inner hydration products and anhydrous cement particles were extracted from 3D images obtained through XCT from real...

article

Improved lithium storage properties of Co3O4 nanoparticles via laser irradiation treatment

Haicheng Wan, Yanguo Liu, Hongzhi Zhang, Wanxing Zhang, more

Electrochimica Acta > 2018 > 281 > C > 31-38

Transition metal oxides have attracted considerable attention as possible electrode materials for lithium-ion batteries. However, poor electrical conductivity and volume change during cycling result in low rate capacity and rapid capacity fading, which hinder the practical applications of those electrodes. In this work, we report a facile approach to modify Co₃O₄ nanoparticles (NPs) by laser irradiation...

article

DNA Block Macromolecules Based on Rolling Circle Amplification Act as Scaffolds to Build Large‐Scale Origami Nanostructures

Zhiqing Zhang, Hongzhi Zhang, Fang Wang, Guodong Zhang, more

Macromolecular Rapid Communications > 39 > 15 > n/a - n/a

A simplified origami strategy to create large‐scale complex DNA nanostructures based on the rolling circle amplification (RCA) is developed. The long repetitive block single strand DNA (ssDNA) synthesized from RCA with a few staple strands are used to fabricate DNA origami, which can be assembled into the first level assemblies of micro‐scale length mono‐nanoladders. Depending on base pairing among...

article

Knockdown of long non-coding RNA XIST inhibits cell viability and invasion by regulating miR-137/PXN axis in non-small cell lung cancer

Huijuan Jiang, Hongzhi Zhang, Xigang Hu, Wenbo Li

International Journal of Biological Macromolecules > 2018 > 111 > C > 623-631

Long non-coding RNAs (lncRNAs) may serve as miRNA sponges to modulate the expressions of miRNA target genes. LncRNA X-inactive specific transcript (XIST) has been demonstrated to be upregulated and act as an oncogene in non-small cell lung cancer (NSCLC). However, the sponge role of XIST in NSCLC progression remains largely unknown. In this study, we demonstrated that XIST was substantially upregulated...

article

Analyses of Effects of Process Parameters on Laser Bending of Stiffened Panels

Shouchong Fu, Lijun Yang, Hongzhi Zhang, Yang Wang, more

International Journal of Precision Engineering and Manufacturing > 2018 > 19 > 4 > 593-604

In this paper, laser forming technology was extended to form the stiffened panels. Compared with the plate with constant thickness, the stiffened panel was a type of panel with complicated structure and was hard to form. In order to gain a profound insight into the deformation characteristics of the stiffened panel under laser forming, a finite element model was established. The effects of process...

article

Arsenic concentrations and speciation in wild birds from an abandoned realgar mine in China

Fen Yang, Shaowen Xie, Jinxin Liu, Chaoyang Wei, more

Chemosphere > 2018 > 193 > C > 777-784

Birds are at a higher level in the food chain; however, the potential bioaccumulation and biotransformation of arsenic (As) in birds in As mines has rarely been studied. In this study, four passerine bird species (tree sparrow [Passer montanus], light-vented bulbul [Pycnonotus sinensis], Garrulax canorus [Leucodioptron canorus], and magpie [Pica pica]) were collected from an abandoned As mine in China...

article

Tunable luminescence of K2MgSi3O8:Ce3+, Tb3+ phosphors through energy transfer

Hongzhi Zhang, Xinmin Zhang, Zhe Cheng, Yang Xu, more

Ceramics International > 2018 > 44 > 2 > 2547-2551

A series of K₂MgSi₃O₈:xCe³⁺ (x = 0.01–0.09), K₂MgSi₃O₈:0.05Ce³⁺, yTb³⁺ (y = 0–0.09) phosphors was prepared by solid-state method. X-ray diffraction was used to determine the crystal phase. Luminescence properties were characterized by photoluminescence (PL), photoluminescence excitation (PLE) spectra at room temperature. K₂MgSi₃O₈:xCe³⁺ series emits blue light when excited by UV-light (λ_ex = 350nm)...

article

Analysis of spring bread wheat varieties (Triticum aestivum L.) using microsatellite markers

A. G. Klykov, I. V. Konovalova, P. M. Bogdan, D. M. Shadrin, more

Russian Agricultural Sciences > 2017 > 43 > 6 > 445-449

The genetic polymorphism of 62 genotypes of spring bread wheat (Triticum aestivum L.) of different ecological and geographical origin has been studied for 13 microsatellite loci using SSR-markers. A cluster analysis has revealed samples for use in hybridization that are most genetically distant from the varieties of selection in Primorsky krai. Lines 161 and 168, which combine the resistance to spike...

article

Inhibition of Notch1/Hes1 signaling pathway improves radiosensitivity of colorectal cancer cells

Hongzhi Zhang, Huijuan Jiang, Lei Chen, Juncai Liu, more

European Journal of Pharmacology > 2018 > 818 > C > 364-370

Notch signaling pathway has been demonstrated to mediate radioresistance of several tumors. Our study aims to explore the function of Notch1/HES1 pathway in the radioresistance of colorectal cancer (CRC). The results demonstrated that expressions of Notch1 and Hes1 were up-regulated with the increasing irradiation dose. DAPT (N-[(3,5-difluorophenacetyl)acety1]-L-alanyl-2-phenyl]glycine-1,1-dimethylethyl...

article

Experimental and numerical study of crack behaviour for capsule-based self-healing cementitious materials

Le-Yang Lv, Hongzhi Zhang, Erik Schlangen, Zhengxian Yang, more

Construction and Building Materials > 2017 > 156 > C > 219-229

A 2D lattice model was constructed to simulate crack process of in shell-interlayer-cement paste zone. The simulated tensile strength was validated by an experimental uniaxial tensile test and used as the input for a 3D lattice model, which was constructed to perform mechanical analysis based on a series of 2D X-ray microtomography images. The fracture behaviour of the 3D lattice model with assigned...

article

Unusual luminescence and temperature dependent decay behavior of divalent europium ion in KBaBP2O8

Luyi Wu, Xinmin Zhang, Jiaxin Yang, Yang Xu, more

Journal of Luminescence > 2017 > 192 > C > 616-619

The unusual photoluminescence (PL) properties and temperature dependent decay behavior of Eu²⁺ in KBaBP₂O₈ are reported and discussed. The emission spectrum is so complicate that it can be deconvoluted into three fitting peaks. The emission bands peaking at 380 and 444nm can be assigned to the 4f⁶5d¹→4f⁷ transition of Eu²⁺ centers substituting for K⁺ and Ba²⁺ site, while the emission band at 497nm...

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INFONA - science communication portal

Search results for: Hongzhi Zhang

Cold storage of Spodoptera litura eggs and Telenomus remus adults for improving mass‐rearing efficiency

Modeling of microstructural effects on the creep of hardened cement paste using an experimentally informed lattice model

Online non-negative discriminative dictionary learning for tracking

Improving ferroelectricity and ferromagnetism of PVDF‐CoFe₂O₄ thick films: Effect of Ethyl acetate and Temperature

Bi-phase metallic cobalt with efficient broadband absorption in X and Ku bands

Automated hazard escaping trajectory planning/tracking control framework for vehicles subject to tire blowout on expressway

Nitrogen deposition suppresses fungal biomass and oxidase activity in faeces of the millipede Spirobolus formosae in a temperate forest

Intercultural challenges, intracultural practices: how Chinese and Australian students understand and experience intercultural communication at an Australian university

Photoluminescence properties and site-preferable distribution of Ce3+ in Na2Ca1-xSrxSi2O6 (x = 0–1) blue-emitting phosphors

Towards understanding stochastic fracture performance of cement paste at micro length scale based on numerical simulation

Improved lithium storage properties of Co3O4 nanoparticles via laser irradiation treatment

DNA Block Macromolecules Based on Rolling Circle Amplification Act as Scaffolds to Build Large‐Scale Origami Nanostructures

Knockdown of long non-coding RNA XIST inhibits cell viability and invasion by regulating miR-137/PXN axis in non-small cell lung cancer

Analyses of Effects of Process Parameters on Laser Bending of Stiffened Panels

Arsenic concentrations and speciation in wild birds from an abandoned realgar mine in China

Tunable luminescence of K2MgSi3O8:Ce3+, Tb3+ phosphors through energy transfer

Analysis of spring bread wheat varieties (Triticum aestivum L.) using microsatellite markers

Inhibition of Notch1/Hes1 signaling pathway improves radiosensitivity of colorectal cancer cells

Experimental and numerical study of crack behaviour for capsule-based self-healing cementitious materials

Unusual luminescence and temperature dependent decay behavior of divalent europium ion in KBaBP2O8

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