Search results for: Jian‐Hua Cheng

Items from 1 to 20 out of 21 results

article

Contrastive removal of oxytetracycline and chlortetracycline from aqueous solution on Al-MOF/GO granules

Lin-ling Yu, Zi-fen Luo, Ying-ying Zhang, Shi-chuan Wu, more

Environmental Science and Pollution Research > 2019 > 26 > 4 > 3685-3696

The presence of tetracycline antibiotics (TCS) in the water and wastewater has raised growing concern due to its potential environmental impacts; thus, their removal is of high importance. In this study, a novel aluminum-based MOF/graphite oxide (Al-MOF/GO) granule was prepared as an adsorbent for the removal of TCS including oxytetracycline (OTC) and chlortetracycline (CTC). The adsorbent was characterized...

article

Synthesis of phosphotungstic acid-supported bimodal mesoporous silica-based catalyst for defluorination of aqueous perfluorooctanoic acid under vacuum UV irradiation

Xia You, Lin-ling Yu, Fang-fang Xiao, Shi-chuan Wu, more

Chemical Engineering Journal > 2018 > 335 > C > 812-821

Phosphotungstic acid (H₃PW₁₂O₄₀, HPW)/bimodal mesoporous silica (BMS) multifunctional catalysts were prepared and employed as photocatalyst for perfluorooctanoic acid (PFOA) degradation under vacuum ultraviolet light (VUV). Lower PFOA concentration, appropriate HPW/BMS dosage (0.2 g·L⁻¹) and acidic condition (pH = 3–4) were more favorable for PFOA defluorination in VUV/HPW/BMS system. Furthermore,...

article

Synthesis of aluminum-based MOF/graphite oxide composite and enhanced removal of methyl orange

Shi-chuan Wu, Lin-ling Yu, Fang-fang Xiao, Xia You, more

Journal of Alloys and Compounds > 2017 > 724 > C > 625-632

An aluminum-based MOF/graphite oxide composite, MIL-68(Al)/GO, was synthesized and used to explore its adsorption performance toward methyl orange (MO). The products were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS) and N₂ adsorption-desorption. Compared to parent material, the composite...

article

Preparation and properties of octenyl succinate β-cyclodextrin and its application as an emulsion stabilizer

Jian-hua Cheng, Yan-na Hu, Zhi-gang Luo, Weijun Chen, more

Food Chemistry > 2017 > 218 > C > 116-121

The aim of this study was to synthesize and characterize the octenyl succinic-β-cyclodextrin (OS-β-CD) and assess its application as a potential emulsion stabilizer. OS-β-CD was prepared by esterifying β-CD with OSA under alkaline conditions. The properties of OS-β-CD were characterized by Fourier transform infrared, ¹³C and ¹H NMR spectroscopy, X-ray diffraction (XRD), which demonstrated that OS...

article

Properties of flocs in sludge conditioning by a novel amphoteric polymer with different anionic degrees

Liang Qi, Xia You, Jian‐Hua Cheng, Yong‐You Hu

Polymer Engineering & Science > 57 > 2 > 197 - 205

This paper aimed to examine how the amphoteric conditioner poly (acrylamide‐′acryloyloxyethyl trimethyl ammonium chloride −2‐acrylamido‐2‐methyl‐propane sulfonate) (PADA) with different anionic degrees (AD) affected the properties of sludge flocs in the conditioning. The floc properties were characterized by morphological parameters (floc size distribution, fractal dimension, specific surface area,...

article

The Effects of Physicochemical Properties of Sludge on Dewaterability Under Chemical Conditioning with Amphoteric Polymer

Liang Qi, Shi-chuan Wu, Jian-hua Cheng, Yong-you Hu

Journal of Polymers and the Environment > 2017 > 25 > 4 > 1262-1272

This study investigated the effects of chemical conditioning with amphoteric terpolymer poly (acrylamide-’acryloyloxyethyl trimethyl ammonium chloride -2-acrylamido-2-methyl-propane sulfonate) (PADA) on sludge dewaterability. Particle size, fractal dimension, surface charge, extracellular polymeric substances (EPS) and trivalent metal ions (Al³⁺ and Fe³⁺) of sludge were monitored and Pearson statistical...

article

Five-year experience of 101 adult patients with moyamoya disease at a single institution in Eastern China

Jian-Hua Cheng, Qiang Ye, Zu-sen Ye, Ze-qun Li, more

Journal of Clinical Neuroscience > 2016 > 32 > Complete > 30-34

This retrospective study included 101 adult moyamoya disease (MMD) patients of whom 58 were females and 43 were males in Wenzhou, China. Clinical and diagnostic features, surgical treatment, follow-up information and outcomes constitute this review. The modified Rankin Scale (mRS) was used to determine the neurological functional outcome. The Kaplan–Meier method was used to estimate recurrent stroke...

article

Ruin probabilities for a two-dimensional perturbed risk model with stochastic premiums

Jian-hua Cheng, De-hui Wang

Acta Mathematicae Applicatae Sinica, English Series > 2016 > 32 > 4 > 1053-1066

In this paper, we consider a two-dimensional perturbed risk model with stochastic premiums and certain dependence between the two marginal surplus processes. We obtain the Lundberg-type upper bound for the infinite-time ruin probability by martingale approach, discuss how the dependence affects the obtained upper bound and give some numerical examples to illustrate our results. For the heavy-tailed...

article

A 52-week safety study in cynomolgus macaques for genetically modified rice expressing Cry1Ab/1Ac protein

Jie Mao, Xing Sun, Jian-Hua Cheng, Yong-Jie Shi, more

Food and Chemical Toxicology > 2016 > 95 > C > 1-11

A 52-week feeding study in cynomolgus macaques was carried out to evaluate the safety of Bt rice Huahui 1 (HH1), a transgenic rice line expressing Cry1Ab/1Ac protein. Monkeys were fed a diet with 20% or 60% HH1 rice, 20% or 60% parental rice (Minghui 63, MH63), normal diet, normal diet spiked with purified recombinant Cry1Ab/1Ac fusion protein or bovine serum albumin (BSA) respectively. During the...

article

Failure Mechanism of Soil Nail—Prestressed Anchor Composite Retaining Structure

Hui Wang, Jian-hua Cheng, Yuan-cheng Guo, Xin-jun Gao

Geotechnical and Geological Engineering > 2016 > 34 > 6 > 1889-1898

Enhancing the strength of retaining structure with soil nails and prestressed anchors is a new technique that can be used in the excavation of deep foundation pit. Finite element analysis (FEA) based on ABAQUS is presented in this paper to investigate the failure mechanism of such retaining structure. The model used in the FEA is firstly validated by comparing the modelled results with field measurements...

article

Synthesis and characterization of a novel terpolymer and the effect of its amphoteric property on the sludge flocculation

Liang Qi, Jian‐Hua Cheng, Xiao‐Yan Liang, Yong‐You Hu

Polymer Engineering & Science > 56 > 2 > 158 - 169

An amphoteric polymer, poly(acrylamide‐acryloyloxyethyl trimethyl ammonium chloride‐2‐acrylamido‐2‐methyl‐propane sulfonate) (PADA) was developed for use as a sludge flocculant. It was synthesized in aqueous solution by ternary free radical copolymerization from acrylamide (AM), acryloyloxyethyl trimethyl ammonium chloride (DAC) and 2‐acrylamido‐2‐methyl‐propane sulfonate (AMPS) in redox/azo initiation...

article

Photochemical defluorination of aqueous perfluorooctanoic acid (PFOA) by Fe⁰/GAC micro-electrolysis and VUV-Fenton photolysis

Li-hong Zhang, Jian-hua Cheng, Xia You, Xiao-yan Liang, more

Environmental Science and Pollution Research > 2016 > 23 > 13 > 13531- 13542

Perfluorooctanoic acid (PFOA) is extremely persistent and bioaccumulative in the environment; thus, it is very urgent to investigate an effective and moderate technology to treat the pollution of PFOA. In this study, a process combined iron and granular activated carbon (Fe⁰/GAC) micro-electrolysis with VUV-Fenton system is employed for the remediation of PFOA. Approximately 50 % PFOA (10 mg L⁻¹)...

article

Photochemical defluorination of aqueous perfluorooctanoic acid (PFOA) by VUV/Fe3+ system

Jian-hua Cheng, Xiao-yan Liang, She-wei Yang, Yong-you Hu

Chemical Engineering Journal > 2014 > 239 > Complete > 242-249

Perfluorooctanoic acid (PFOA), which is a typical perfluorinated acid, is bioaccumulative and extremely resistant to environmental degradation processes. In this study, a combined process using vacuum ultraviolet light (λ=185nm) and trivalent iron ions (VUV/Fe ³⁺ ) was used to defluorinate aqueous PFOA. PFOA could be efficiently defluorinated under acidic condition (pH=3–4), with a molar ratio...

article

Effect of vacuum ultraviolet on ultrasonic defluorination of aqueous perfluorooctanesulfonate

She-wei Yang, Jian Sun, Yong-you Hu, Jian-hua Cheng, more

Chemical Engineering Journal > 2013 > 234 > Complete > 106-114

This study represents the first use of ultraviolet (VUV, λ=185nm)-assisted ultrasound (US, f=600kHz) irradiation for the defluorination of aqueous perfluorooctanesulfonate (PFOS) under air atmosphere. The effects of reaction time, pH, temperature and initial PFOS concentration on the defluorination performance of VUV, US and VUV-assisted US systems were compared. The intermediates formed during PFOS...

article

Characteristics of heavy metals capturing agent dithiocarbamate (DTC) for treatment of ethylene diamine tetraacetic acid–Cu (EDTA–Cu) contaminated wastewater

Hao-bo Zhen, Qian Xu, Yong-you Hu, Jian-hua Cheng

Chemical Engineering Journal > 2012 > 209 > Complete > 547-557

An efficient and water-soluble (102g/kg at 293K) heavy metals capturing agent was developed for removal of copper in ethylene diamine tetraacetic acid–Cu (EDTA–Cu) wastewater. The agent was synthesized through nucleophilic reaction of carbon disulfide and hydrazine hydrate. Infra-red, ultraviolet and ¹³ C Nuclear Magnetic Resonance (NMR) spectra and elemental analysis demonstrated that the...

article

The effect of TiO2 doping on the catalytic properties of nano-Pd/SnO2 catalysts during the reduction of nitrate

Yan-ni Guo, Jian-hua Cheng, Yong-you Hu, De-hao Li

Applied Catalysis B: Environmental > 2012 > 125 > Complete > 21-27

The monometallic catalysts Pd/TiO ₂ –SnO ₂ and Pd/SnO ₂ prepared by impregnation method were investigated for their ability to catalyze the reduction of nitrate with formic acid as the reducing agent and were characterized by X-ray diffraction (XRD), BET surface area, transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS). Pd and TiO ₂ were...

chapter

On signal-axis rotation for SINS based on IMU rotation

Jian-Hua Cheng, Zhen-Jun Shen, Xin-Zhe Wang

Proceedings of the 30th Chinese Control Conference > 2026 - 2030

2011 30th Chinese Control Conference (CCC)

In order to improve the accuracy of strapdown inertial navigation system, this paper brought the rotation monitor technique to improve the SINS accuracy. Three schemes were analyzed respectively toward the modulation results of constant gyro drift and the gyro scale error. The new scheme is given by analyzing in this way. Computer simulation shows that the new scheme can modulate the inertial sensor...

article

Excellent catalytic and electrochemical properties of the mesoporous MnO2 nanospheres/nanosheets

Jian-Hua Cheng, Guang Shao, Hui-Juan Yu, Jie-Jun Xu

Journal of Alloys and Compounds > 2010 > 505 > 1 > 163-167

In this paper, we report the successful synthesis of mesoporous MnO ₂ nanospheres composed of nanosheets via a facile hydrothermal route without any template. The phase and morphology of the products were characterized by means of X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The reaction time played an important role in the formation...

chapter

Research of INS Simulation Technique Based on UnderWater Vehicle Motion Model

Jian-hua Cheng, Yu-shen Li, Jun-yu Shi

2009 International Conference on Computer Engineering and Technology > 1 > 510 - 514

2009 International Conference on Computer Engineering and Technology (ICCET 2009)

Considering the dynamic error of platform inertial navigation system (INS) caused by vehicle mobile movement, output information of underwater vehicle and input information of INS are deeply analyzed. This paper gives the transform relationship among geographical reference frame, fixed and reference frame which are used to describe movement of underwater vehicle. Then, logical join between vehicle...

chapter

Dynamic Graph Watermark Algorithm Based on the Threshold Scheme

Yang-Xia Luo, Jian-Hua Cheng, Ding-Yi Fang

2008 International Symposium on Information Science and Engineering > 2 > 689 - 693

2008 International Symposium on Information Science and Engineering (ISISE)

Aim at robustness and efficiency of traditional Dynamic Graph Watermark (DGW), a DGW-AB algorithm based on threshold scheme is proposed, in which the idea of secret sharing to the software watermarking is introduced. Experimental results have shown that the proposed method can make up the weakness of CT algorithm, and prevent invaders from getting the original watermark.

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Search results for: Jian‐Hua Cheng

Contrastive removal of oxytetracycline and chlortetracycline from aqueous solution on Al-MOF/GO granules

Synthesis of phosphotungstic acid-supported bimodal mesoporous silica-based catalyst for defluorination of aqueous perfluorooctanoic acid under vacuum UV irradiation

Synthesis of aluminum-based MOF/graphite oxide composite and enhanced removal of methyl orange

Preparation and properties of octenyl succinate β-cyclodextrin and its application as an emulsion stabilizer

Properties of flocs in sludge conditioning by a novel amphoteric polymer with different anionic degrees

The Effects of Physicochemical Properties of Sludge on Dewaterability Under Chemical Conditioning with Amphoteric Polymer

Five-year experience of 101 adult patients with moyamoya disease at a single institution in Eastern China

Ruin probabilities for a two-dimensional perturbed risk model with stochastic premiums

A 52-week safety study in cynomolgus macaques for genetically modified rice expressing Cry1Ab/1Ac protein

Failure Mechanism of Soil Nail—Prestressed Anchor Composite Retaining Structure

Synthesis and characterization of a novel terpolymer and the effect of its amphoteric property on the sludge flocculation

Photochemical defluorination of aqueous perfluorooctanoic acid (PFOA) by Fe⁰/GAC micro-electrolysis and VUV-Fenton photolysis

Photochemical defluorination of aqueous perfluorooctanoic acid (PFOA) by VUV/Fe3+ system

Effect of vacuum ultraviolet on ultrasonic defluorination of aqueous perfluorooctanesulfonate

Characteristics of heavy metals capturing agent dithiocarbamate (DTC) for treatment of ethylene diamine tetraacetic acid–Cu (EDTA–Cu) contaminated wastewater

The effect of TiO2 doping on the catalytic properties of nano-Pd/SnO2 catalysts during the reduction of nitrate

On signal-axis rotation for SINS based on IMU rotation

Excellent catalytic and electrochemical properties of the mesoporous MnO2 nanospheres/nanosheets

Research of INS Simulation Technique Based on UnderWater Vehicle Motion Model

Dynamic Graph Watermark Algorithm Based on the Threshold Scheme

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