Search results for: H. Ma

Items from 1 to 20 out of 1,033 results

article

Mathematical interpretation of Brownian motor model: Limit cycles and directed transport phenomena

J. Yang, H. Ma, S. Zhong

Communications in Nonlinear Science and Numerical Simulation > 2018 > 56 > Complete > 467-480

In this article, we first suggest that the attractor of Brownian motor model is one of the reasons for the directed transport phenomenon of Brownian particle. We take the classical Smoluchowski-Feynman (SF) ratchet model as an example to investigate the relationship between limit cycles and directed transport phenomenon of the Brownian particle. We study the existence and variation rule of limit cycles...

article

Ni(OH)₂/NGQDs-based electrochemiluminescence immunosensor for prostate specific antigen detection by coupling resonance energy transfer with Fe₃O₄♂nO₂ composites

W. Zhu, M. Saddam Khan, W. Cao, X. Sun, more

Biosensors and Bioelectronics > 2018 > 99 > Complete > 346-352

An efficient quenching electrochemiluminescence (ECL) immunosensor based on ECL resonance energy transfer (ECL-RET) was studied for sensitive analysis of prostate specific antigen (PSA). In this protocol, nitrogen-doped graphene quantum dots (NGQDs) which could produce excellent ECL emission, were loaded onto Ni(OH)₂ with the three-dimensional (3D) hierarchical and stacked lamellar structure. Taking...

article

Effects of ultrasound-assisted α-amylase degradation treatment with multiple modes on the extraction of rice protein

X. Yang, Y. Li, S. Li, A.O. Oladejo, more

Ultrasonics - Sonochemistry > 2018 > 40 > Part A > 890-899

The effects of ultrasound-assisted α-amylase degradation (UAD) treatment with multiple modes on the extraction of rice protein (RP) from rice dreg powder were studied. The results showed that UAD treatment increased protein extraction rate significantly (p<0.05) compared to that of α-amylase degradation treatment and control. Among all the ultrasound mode treatments researched in this paper, sequential...

article

Automatic detection of false positive RFID readings using machine learning algorithms

H. Ma, Y. Wang, K. Wang

Expert Systems With Applications > 2018 > 91 > Complete > 442-451

Radio frequency identification (RFID) has been widely used for the automatic identification, tracking and tracing of goods throughout the supply chain from the manufacturer to the customer. However, one technological problem that impedes the productive and reliable use of RFID is the constraint of false positive readings, which refers to tags that are detected accidentally by the reader but not the...

article

Dynamic assembly of molecularly imprinted polymer nanoparticles

H. Gong, S. Hajizadeh, L. Jiang, H. Ma, more

Journal of Colloid And Interface Science > 2018 > 509 > Complete > 463-471

Manipulation of specific binding and recycling of materials are two important aspects for practical applications of molecularly imprinted polymers. In this work, we developed a new approach to control the dynamic assembly of molecularly imprinted nanoparticles by surface functionalization. Molecularly imprinted polymer nanoparticles with a well-controlled core-shell structure were synthesized using...

article

Thermal and mechanical properties of high-performance fiber-reinforced cementitious composites after exposure to high temperatures

X. Li, Y. Bao, L. Wu, Q. Yan, more

Construction and Building Materials > 2017 > 157 > Complete > 829-838

This paper investigates residual thermal and mechanical properties of high-performance fiber-reinforced cementitious composites (HPFRCCs) proportioned with high-volume fly ash after exposure to 200, 400, 600, and 800^oC. The investigated thermal and mechanical properties include the thermal conductivity, specific heat, compressive strength, tensile strength, tensile ductility, and density. The effects...

article

Spectral negentropy based sidebands and demodulation analysis for planet bearing fault diagnosis

Z. Feng, H. Ma, M.J. Zuo

Journal of Sound and Vibration > 2017 > 410 > Complete > 124-150

Planet bearing vibration signals are highly complex due to intricate kinematics (involving both revolution and spinning) and strong multiple modulations (including not only the fault induced amplitude modulation and frequency modulation, but also additional amplitude modulations due to load zone passing, time-varying vibration transfer path, and time-varying angle between the gear pair mesh lines...

article

The electronic and mechanical properties of tetragonal YB₂C as explored by first-principles methods

H. Ma, G. Mi, X. Cheng, C. Liu, more

Journal of Alloys and Compounds > 2017 > 726 > Complete > 173-178

By means of the first-principles calculations, the lattice parameters, electronic structures, phonon dispersions, and mechanical properties of the rare earth metal borocarbide YB₂C have been theoretically investigated. The dynamically stability of the layered tetragonal YB₂C has been evidenced based on the frozen phonon method. We have found that the covalent bonding between B-2p, C-2p and Y-5d orbitals...

article

Protein breakdown and release of antioxidant peptides during simulated gastrointestinal digestion and the absorption by everted intestinal sac of rapeseed proteins

C. Dai, W. Zhang, R. He, F. Xiong, more

LWT - Food Science and Technology > 2017 > 86 > Complete > 424-429

The main objective of the study was to evaluate the bioaccessibility of rapeseed soluble proteins (RSPs) by simulated gastrointestinal digestion and isolated intestine methods. In the gastric phase, the degree of hydrolysis (DH) of RSPs increased from 2.6% to 8.2%, while the surface hydrophobicity (H₀) decreased from 62.8% to 59.1%. Further digestion in the intestinal phase brought DH and H₀ to 18...

article

Improvement of nutritional value and bioactivity of soybean meal by solid-state fermentation with Bacillus subtilis

C. Dai, H. Ma, R. He, L. Huang, more

LWT - Food Science and Technology > 2017 > 86 > Complete > 1-7

The main objective of this research was to evaluate the nutritional quality and bioactivity of soybean meal (SBM) by solid-state fermentation (SSF) with Bacillus subtilis. The results indicated that the contents of crude and soluble proteins, total phenol and flavonoid all increased distinctly, while trypsin inhibitor (TI) content decreased after fermentation. There was a slight difference in the...

article

An assessment of heat transfer models of water flow in helically coiled tubes based on selected experimental datasets

J. Gou, H. Ma, Z. Yang, J. Shan

Annals of Nuclear Energy > 2017 > 110 > Complete > 648-667

This paper presents an assessment of the heat transfer models under different heat transfer modes for water flow in helically coiled tubes based on the compiled datasets from the reviewed literatures. For single phase flow, most of the correlations of the heat transfer coefficient can fit well to the experiments. The correlations of Xin-Ebadian, Dravid and Kalb-Seader for laminar flow and those of...

article

Triclosan (TCS) and triclocarban (TCC) induce systemic toxic effects in a model organism the nematode Caenorhabditis elegans

K.A. Lenz, C. Pattison, H. Ma

Environmental Pollution > 2017 > 231 > Part 1 > 462-470

The broad application of triclosan (TCS) and triclocarban (TCC) as antimicrobials in household and personal care products has led to the concerns regarding their human health risk and environmental impact. Although many studies have examined the toxicological effects of these compounds to a wide range of aquatic organisms from algae to fish, their potential toxicity to an important model organism...

article

Effect of anti-corrosive performance, roughness and chemical composition of pre-treatment layer on the overall performance of the paint system on cold-rolled steel

X. Gao, W. Li, H. Ma

Surface & Coatings Technology > 2017 > 329 > Complete > 19-28

Many fundamental researches about the effect of some basic properties of a pre-treatment layer, such as anti-corrosive performance, surface roughness and chemical composition on the overall performance of paint systems were investigated. Three kinds of pre-treatment layers: bare polyacrylic acid (PAA) layer, Mo based layer and Mo doped PAA layer were deposited on cold-rolled steel surfaces through...

article

One-step thermal synthesis of nickel nanoparticles modified graphene sheets for enzymeless glucose detection

Z. Ji, Y. Wang, Q. Yu, X. Shen, more

Journal of Colloid And Interface Science > 2017 > 506 > Complete > 678-684

The development of accurate, reliable and low cost devices for glucose detection is one of the most important scientific and technological hotspots. In this study, we proposed a unique one-step thermal synthesis strategy to synthesize nickel (Ni) nanoparticles modified graphene (GE) sheets by using metal-oleate complex as the precursor and sodium sulfate as a template. With the assistance of sodium...

article

Size effect in circular concrete-filled steel tubes with different diameter-to-thickness ratios under axial compression

W. Wang, H. Ma, Z. Li, Z. Tang

Engineering Structures > 2017 > 151 > Complete > 554-567

Axial compression tests of circular concrete-filled steel tubes with different diameters (219mm, 426mm, and 630mm) and ratios of tube diameter to steel thickness (55 and 88) were conducted to investigate the effect of size on the bearing capacity. The experimental results indicated that the peak nominal stress decreased as the size increased, and the decrease in the nominal stress due to the size...

article

Broadband aberration-free focusing reflector for acoustic waves

A. Wang, S. Qu, H. Ma, J. Wang, more

Physics Letters A > 2017 > 381 > 42 > 3599-3603

An aberration-free focusing reflector (AFR) for acoustic waves is proposed with the aim to eliminate spherical aberration and coma simultaneously. Meanwhile, the AFR can focus acoustic waves with low dispersion in a wide frequency range of 14-50 kHz. The broadband aberration-free focusing effect is originated from an elliptical reflection phase gradient profile, which is achieved by milling different...

article

Fatigue behavior of a harmonic structure designed austenitic stainless steel under uniaxial stress loading

Z. Zhang, H. Ma, R. Zheng, Q. Hu, more

Materials Science & Engineering A > 2017 > 707 > Complete > 287-294

Harmonic structured materials present a good balance of high strength and high ductility due to their peculiar network structure topology. Since long-term durability is critical for their practical applications, so the present work investigated the fatigue properties of a harmonic structured austenitic stainless steel at room temperature under uniaxial stress loading. The harmonic structure designed...

article

Sympatric occurrence and population dynamics of Scylla spp. in equatorial climate: Effects of rainfall, temperature and lunar phase

H. Fazhan, K. Waiho, M.F. Darin Azri, I. Al-Hafiz, more

Estuarine, Coastal and Shelf Science > 2017 > 198 > Part A > 299-310

Mud crabs (Scylla spp.) are known to exist sympatrically in the wild. However, information on their population dynamics and the influence of climate parameters and lunar phase, especially along the equatorial region, are limited. Four sampling stations representing three seas (the Strait of Malacca, South China Sea and Sulu Sea) along the equator were selected. Mud crabs were collected using baited...

article

Changes on lipid peroxidation,enzymatic activities and gene expression in planarian (Dugesia japonica) following exposure to perfluorooctanoic acid

Z. Yuan, Z. Miao, X. Gong, B. Zhao, more

Ecotoxicology and Environmental Safety > 2017 > 145 > Complete > 564-568

We investigated perfluorooctanoic acid (PFOA)-induced stress response in planarians. We administered different concentrations of PFOA to planarians for up to 10 d. PFOA exposure resulted in significant concentration-dependent elevations in lipid peroxidation, glutathione S-transferase and caspase-3 protease activities, and a significant decline in glutathione peroxidase activities compared with control...

article

Formation mechanism of anodic titanium oxide in mixed electrolytes

M. Liao, H. Ma, D. Yu, H. Han, more

Materials Research Bulletin > 2017 > 95 > Complete > 539-545

The formation mechanism of anodic TiO₂ nanotubes (ATNTs) remains mysterious and complicated. Usually, ATNTs are fabricated in pure NH₄F electrolytes rather than mixed electrolytes and Ti anodizations are carried out under potentiostatic rather than galvanostatic conditions. In this work, anodizations under the potentiostatic and galvanostatic conditions are conducted. The formation processes of titanium...

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INFONA - science communication portal

Search results for: H. Ma

Mathematical interpretation of Brownian motor model: Limit cycles and directed transport phenomena

Ni(OH)₂/NGQDs-based electrochemiluminescence immunosensor for prostate specific antigen detection by coupling resonance energy transfer with Fe₃O₄♂nO₂ composites

Effects of ultrasound-assisted α-amylase degradation treatment with multiple modes on the extraction of rice protein

Automatic detection of false positive RFID readings using machine learning algorithms

Dynamic assembly of molecularly imprinted polymer nanoparticles

Thermal and mechanical properties of high-performance fiber-reinforced cementitious composites after exposure to high temperatures

Spectral negentropy based sidebands and demodulation analysis for planet bearing fault diagnosis

The electronic and mechanical properties of tetragonal YB₂C as explored by first-principles methods

Protein breakdown and release of antioxidant peptides during simulated gastrointestinal digestion and the absorption by everted intestinal sac of rapeseed proteins

Improvement of nutritional value and bioactivity of soybean meal by solid-state fermentation with Bacillus subtilis

An assessment of heat transfer models of water flow in helically coiled tubes based on selected experimental datasets

Triclosan (TCS) and triclocarban (TCC) induce systemic toxic effects in a model organism the nematode Caenorhabditis elegans

Effect of anti-corrosive performance, roughness and chemical composition of pre-treatment layer on the overall performance of the paint system on cold-rolled steel

One-step thermal synthesis of nickel nanoparticles modified graphene sheets for enzymeless glucose detection

Size effect in circular concrete-filled steel tubes with different diameter-to-thickness ratios under axial compression

Broadband aberration-free focusing reflector for acoustic waves

Fatigue behavior of a harmonic structure designed austenitic stainless steel under uniaxial stress loading

Sympatric occurrence and population dynamics of Scylla spp. in equatorial climate: Effects of rainfall, temperature and lunar phase

Changes on lipid peroxidation,enzymatic activities and gene expression in planarian (Dugesia japonica) following exposure to perfluorooctanoic acid

Formation mechanism of anodic titanium oxide in mixed electrolytes

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