Search results for: Yuanpeng Li

Items from 1 to 20 out of 25 results

article

Rapid detection of hepatitis B virus DNA level based on interval‐point data fusion of infrared spectra

Jiaze Chen, Jinfang Ma, Xueqin Han, Yongxin Zhou, more

Journal of Biophotonics > 16 > 3 > n/a - n/a

Hepatitis B is an infectious disease cause by the hepatitis B virus (HBV). In recent years, HBV‐DNA level clinically gets more attention for its detailed information than other serological markers. Unfortunately, common clinical method for HBV‐DNA level detection is limited for its hours consuming. This study combined infrared spectroscopy with machine learning to investigate the feasibility of near‐infrared...

article

Rapid identification of flaxseed oil based on portable fiber optic Raman spectroscopy combined with an oil microscopy method

Yuancui Su, Yuanpeng Li, Chengsen Tan, Rui Zeng, more

Journal of Food Science > 87 > 8 > 3407 - 3418

Abstract To explore a fast, simple, and accurate method to identify adulteration in flaxseed oil, the Raman spectral data of 130 samples containing flaxseed, canola, cottonseed, and adulterated oils were obtained using a portable fiber optic Raman spectrometer. The Raman spectral results showed that the Raman spectra of the flaxseed and canola oils had noticeable peak shifts, whereas the peak positions...

article

Large Terahertz Phase Shift Induced by Photothermal Effect of Gold Nanoparticles Incorporated with Toluene

Yuanpeng Li, Dainan Zhang, Yulong Liao, Zhiyong Zhong, more

Annalen der Physik > 534 > 5 > n/a - n/a

Phase and amplitude modulation of propagating terahertz (THz) waves in free space is essential for many rapidly developing THz technologies. Herein, an all‐optical, high‐performance, and ultra‐broadband THz phase shifter is demonstrated. Tunable phase shift is achieved by the photothermal effect of plasmonic gold nanoparticles in toluene, which can induce variations in the THz refractive index of...

article

Determination of 10‐Hydroxy‐2‐Decenoic Acid of Royal Jelly Using Near‐Infrared Spectroscopy Combined with Chemometrics

Xinhao Yang, Yuanpeng Li, Lei Wang, Liqun Li, more

Journal of Food Science > 84 > 9 > 2458 - 2466

A rapid quantitative analysis model for determining the hydroxy‐2‐decenoic acid (10‐HDA) content of royal jelly based on near‐infrared spectroscopy combining with PLS has been developed. Firstly, near‐infrared spectra of 232 royal jelly samples with different 10‐HDA concentrations (0.35% to 2.44%) were be collected. Second‐order derivative processing of the spectra was carried out to construct a full‐spectrum...

article

Hydrogen evolution promotion of Au‐nanoparticles‐decorated TiO₂ nanotube arrays prepared by dip‐loading approach

Dainan Zhang, Jiahui Chen, Peng Deng, Xiaoyi Wang, more

Journal of the American Ceramic Society > 102 > 10 > 5873 - 5880

Au nanoparticle (NPs)@TiO₂nanotube arrays (NTAs) heterostructured films with enhanced H₂ generation rate under full spectrum were synthesized, by using a controllable and facile dip‐loading approach. Size of the Au NPs was well‐distributed around 7 nm, and the TiO₂ NTAs were found vertically aligned. Due to LSPR effect and Schottky contact, the as‐prepared Au NPs@TiO₂ NTAs heterostructured films...

article

High-Performance All-Optical Terahertz Modulator Based on Graphene/TiO₂/Si Trilayer Heterojunctions

Miaoqing Wei, Dainan Zhang, Yuanpeng Li, Lei Zhang, more

Nanoscale Research Letters > 2019 > 14 > 1 > 1-6

In this paper, we demonstrate a trilayer hybrid terahertz (THz) modulator made by combining a p-type silicon (p-Si) substrate, TiO₂ interlayer, and single-layer graphene. The interface between Si and TiO₂ introduced a built-in electric field, which drove the photoelectrons from Si to TiO₂, and then the electrons injected into the graphene layer, causing the Fermi level of graphene to shift into a...

article

Diagnosis of early gastric cancer based on fluorescence hyperspectral imaging technology combined with partial‐least‐square discriminant analysis and support vector machine

Yuanpeng Li, Xiaojuan Xie, Xinhao Yang, Liu Guo, more

Journal of Biophotonics > 12 > 5 > n/a - n/a

This study investigated the feasibility of using fluorescence hyperspectral imaging technology to diagnose of early‐stage gastric cancer. Fluorescence spectral images of 76 patients who were pathologically diagnosed as non‐atrophic gastritis, premalignant lesions and gastric cancer were collected. Fluorescence spectra at 100‐pixel points were randomly extracted after binarization. Diagnostic models...

article

A new‐style poly(vinyl alcohol) gel prepared by automatic hydrolysis of poly(vinyl acetate) emulsion

Yuanpeng Li, Jianguo Deng, Junhua Zhang

Journal of Applied Polymer Science > 135 > 47 > n/a - n/a

Totally different from traditional poly(vinyl alcohol) (PVA) gel preparation methods, a new‐style PVA gel was prepared by automatic hydrolysis of a poly(vinyl acetate) (PVAc) emulsion during storage. First, a PVAc emulsion was obtained using potassium persulfate and sodium bisulfite as redox initiators in the presence of ferrous chloride. Ferrous chloride is helpful for reducing the redox polymerization...

article

Porous poly(vinyl formal) foam prepared using poly(vinyl alcohol) of low degree of polymerization

Yuanpeng Li, Jianguo Deng, Junhua Zhang

Polymer International > 67 > 10 > 1438 - 1444

Poly(vinyl formal) (PVF) foams are usually prepared using poly(vinyl alcohol) (PVA) of high degree of polymerization, the most reported degree of polymerization being 1700. In the work reported, PVA of low degree of polymerization of 500 was used to prepare PVF foams, which is a great challenge because of the weaker hydrogen bond interaction than that for a higher degree of polymerization. By changing...

article

Detection of olive oil adulteration with waste cooking oil via Raman spectroscopy combined with iPLS and SiPLS

Yuanpeng Li, Tao Fang, Siqi Zhu, Furong Huang, more

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy > 2018 > 189 > C > 37-43

Olive oil adulteration with waste cooking oil was detected and quantified by combining optical Raman scattering spectroscopy and chemometrics. Spectra of 96 olive oil samples with waste cooking oil (2.5%, 5%, 10%, 20%, 30% and 50%) were collected by the portable Raman spectroscopy system. iPLS and SiPLS quantitative analysis models were established. The results revealed that spectral data after SNV...

article

Manipulate the magnetic anisotropy of nanoparticle assemblies in arrays

Tianlong Wen, Yuanpeng Li, Dainan Zhang, Qingfeng Zhan, more

Journal of Colloid and Interface Science > 2017 > 497 > C > 14-22

Tuning the magnetic anisotropy of nanoparticle assemblies is critical for their applications such as on-chip magnetic electronic components and electromagnetic wave absorption. In this work, we developed a facile hierarchical self-assembly method to separately control the magnetic shape and magnetocrystalline anistropy of individual nanoparticle assemblies in arrays. Since magnetic nanoparticle assemblies...

article

An advanced wet method for simultaneous removal of SO2 and NO from coal-fired flue gas by utilizing a complex absorbent

Runlong Hao, Yaoyu Zhang, Zhaoyue Wang, Yuanpeng Li, more

Chemical Engineering Journal > 2017 > 307 > C > 562-571

SO₂ and NO are the main precursors for the haze. Since the combined system of SCR and WFGD is not suitable for treating the flue gas from industrial boiler, this paper proposes an integrated and effective wet method to simultaneously remove SO₂ and NO. A complex absorbent (CA) composing of sodium humate and sodium chlorite was prepared, the corresponding best mass concentration ratio was determined...

chapter

Improve optical modulation depth of terahertz wave by monolayers of plasmonic nanoparticles

Tianlong Wen, Chong Zhang, Qiye Wen, Yulan Jing, more

2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz) > 1 - 2

2016 41st International Conference on Infrared, Millimeter, and Terahertz waves (IRMMW-THz)

Monodisperse colloidal gold nanoparticles were self-assembled into ultra-large-area monolayers and used as coating films on intrinsic silicon to improve the optical modulation depth of terahertz (THz) waves. The monolayer does not attenuate the transmission of THz wave but largely boost the generation of electron-hole pairs in silicon. The THz modulation depth of silicon was improved by a factor of...

article

Identification of waste cooking oil and vegetable oil via Raman spectroscopy

Furong Huang, Yuanpeng Li, Huixian Guo, Jie Xu, more

Journal of Raman Spectroscopy > 47 > 7 > 860 - 864

This paper made a qualitative identification of ordinary vegetable oil and waste cooking oil based on Raman spectroscopy. Raman spectra of 73 samples of four varieties oil were acquired through the portable Raman spectrometer. Then, a partial least squares discriminant analysis (PLS‐DA) model and a discrimination model based on characteristic wave band ratio were established. A classification variable...

chapter

A Better Reading Tutor That Listens

Jack Mostow, Greg Aist, Juliet Bey, Wei Chen, more

Lecture Notes in Computer Science > Intelligent Tutoring Systems > Interactive Events > 451-451

Project LISTEN’s Reading Tutor listens to children read aloud, and helps them learn to read, as illustrated on the Videos page of our website. This Interactive Event encompasses both this basic interaction and new extensions we are developing.

article

Qualitative Identification of Fish Meal and Meat Bone Meal via Fluorescence Spectral Imaging

Yuanpeng Li, Furong Huang, Ruiyi Xian, Xiaoshu Lu, more

Food Analytical Methods > 2015 > 8 > 8 > 2150-2156

In order to improve feed safety, we investigated the feasibility of using fluorescence spectral imaging (FSI) technique to qualitatively detect meat and bone meal (MBM) mixed with fish meal (FM). Using the FSI system, the spectra of 90 FM and MBM samples from different regions were collected with denoising and binary processing to obtain images. The spectral data curves over the wavelength...

article

Influence of soaking duration on the selective oxidation and galvanizability of a high‐strength dual phase steel

Yuanpeng Li, Sheming Jiang, Xunhua Yuan, Binkai Chen, more

Surface and Interface Analysis > 44 > 4 > 472 - 477

High‐strength dual phase steels readily exhibit bad galvanizability and coating defects because of selective oxides formed on steel surface during the annealing process prior to galvanizing. To investigate selective oxidation of alloying elements and their effects on glavanizability, a high‐strength dual phase steel was annealed with soaking duration for 45, 90, and 120 s, respectively, and then galvanized...

article

Earnings Management and the Accrual Anomaly: Evidence from China

Yuanpeng Li, Jianjun Niu, Ran Zhang, James A. Largay

Journal of International Financial Management & Accounting > 22 > 3 > 205 - 245

Using the unique Chinese setting in which the “delisting regulation” is based on accounting numbers, we separate earnings management into (1) earnings management responding to regulation and (2) earnings management prompted by market pressures and further document that earnings management responding to market pressures produces the accrual anomaly (Sloan, 1996) and earnings management responding to...

chapter

A novel multi-band smart antenna with compact size for mobile phones

Yimin Zhao, Yuanpeng Li

2011 International Conference on Electrical and Control Engineering > 1917 - 1919

2011 International Conference on Electrical and Control Engineering (ICECE)

In this paper, a multi-band flat two element array smart antenna with compact size for mobile phone is proposed. The antenna is composed of a two element array antenna; the dimension of the proposed antenna element is only 28mm (length), 11mm (height), 0.1mm (thickness). Some important parts of radiation performance such as a LCD module, a PCB, antenna feed area, key board and EMI sheet are finely...

article

A Three-Layer Competition-Based Giant Magnetoresistive Assay for Direct Quantification of Endoglin from Human Urine

Balasubramanian Srinivasan, Yuanpeng Li, Ying Jing, Chengguo Xing, more

Analytical Chemistry > 2011 > 83 > 8 > 2996 - 3002

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ADULTERATION (2)
IDENTIFICATION (2)
MAGNETIC NANOPARTICLES (2)
NANOPARTICLES (2)
OPTICAL MODULATION (2)
WASTE COOKING OIL (2)
10‐HYDROXY‐2‐DECENOIC ACID (1)
ADSORPTION (1)
ANTENNA ARRAYS (1)
ANTENNA RADIATION PATTERNS (1)
APPARENT DENSITY (1)
ARRAYS (1)
BIOMAGNETISM (1)
BIOMARKERS (1)
BIOMARKERS DETECTION (1)
BIOMARKERS IDENTIFICATION (1)
BIOSENSORS (1)
BROAD BAND (1)
BROADBAND MODULATION (1)
BUILT-IN ELECTRIC FIELD (1)
CANCER (1)
CANCER DETECTION (1)
CANCER PREVENTION (1)
CHEMOMETRIC ALGORITHMS (1)
CLOSED CELL (1)
COAL-FIRED FLUE GAS CLEANING (1)
COMPOSITES (1)
DIAGNOSIS (1)
DUAL PHASE STEEL (1)
EARLY GASTRIC CANCER (1)
EMULSION POLYMERIZATION (1)
FAMILY-BASED PERSONALIZED MEDICINE (1)
FISH MEAL (1)
FLAXSEED OIL (1)
FLUORESCENCE HYPERSPECTRAL IMAGING (1)
GALVANIZABILITY (1)
GELS (1)
GIANT MAGNETORESISTANCE (1)
GMR SENSOR (1)
GOLD (1)
GSM (1)
HBV‐DNA LEVEL (1)
HIERARCHICAL SELF-ASSEMBLY (1)
HIGH-Κ GATE DIELECTRIC (1)
HYBRID BEADS (1)
HYDROGEN EVOLUTION (1)
INFLORESCENCE SPECTRAL IMAGING (1)
INFRARED SPECTROSCOPY (1)
INTEGRATED CIRCUIT TECHNOLOGY (1)
INTERLEUKIN-6 (1)
INTERVAL‐POINT DATA FUSION (1)
LOW DEGREE OF POLYMERIZATION (1)
LUNG (1)
LUNG CANCER (1)
MACHINE LEARNING (1)
MAGNETIC ANISOTROPY (1)
MAGNETIC PARTICLES (1)
MAGNETIC SENSORS (1)
MAGNETIC TUNNELING (1)
MAGNETOCRYSTALLINE ANISOTROPY (1)
MAGNETORESISTIVE BIOSENSOR (1)
MEASUREMENT BY LASER BEAM (1)
MEAT AND BONE MEAL (1)
MICRO-TOTAL ANALYSIS SYSTEMS (1)
MOBILE ANTENNAS (1)
MOBILE HANDSETS (1)
MOBILE PHONE (1)
MOLECULAR BIOPHYSICS (1)
NANOBIOTECHNOLOGY (1)
NANOTUBES (1)
NIR (1)
NO (1)
OIL MICROSCOPY ANALYSIS (1)
OLIVE OIL (1)
OPEN CELL (1)
OPTICAL RAMAN SCATTERING SPECTRUM (1)
PARTIAL LEAST SQUARES DISCRIMINANT ANALYSIS (1)
PARTIAL LEAST SQUARES DISCRIMINANT ANALYSIS (PLS‐DA) (1)
PHASE SHIFTER (1)
PHOTOCATALYSIS (1)
PLASMONIC GOLD NANOPARTICLES (1)
PLS‐DA (1)
POLYMER BEADS (1)
POWER LASERS (1)
PSEUDO-COLOR IMAGE (1)
PULSED LASER DEPOSITION (1)
PVF FOAMS (1)
RAMAN SPECTROSCOPY (1)
RAMAN SPECTRUM (1)
RATIO METHOD (1)
ROYAL JELLY (1)
SELECTIVE OXIDATION (1)
SENSOR ARRAYS (1)
SHAPE ANISOTROPY (1)
SILICON (1)
SINGLE-LAYER GRAPHENE (1)
SMART ANTENNA (1)
SO2 (1)
SOAKING DURATION (1)
SODIUM CHLORITE (NACLO2) (1)
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Journal of Biophotonics (2)
Journal of Food Science (2)
Analytical Chemistry (1)
Annalen der Physik (1)
Chemical Engineering Journal (1)
Food Analytical Methods (1)
Journal of Applied Polymer Science (1)
Journal of Colloid and Interface Science (1)
Journal of International Financial Management & Accounting (1)
Journal of Raman Spectroscopy (1)
Journal of the American Ceramic Society (1)
Journal of the American Chemical Society (1)
Microelectronic Engineering (1)
Nanoscale Research Letters (1)
Polymer International (1)
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy (1)
Surface and Interface Analysis (1)
Talanta (1)
The Journal of Urology (1)
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INFONA - science communication portal

Search results for: Yuanpeng Li

Rapid detection of hepatitis B virus DNA level based on interval‐point data fusion of infrared spectra

Rapid identification of flaxseed oil based on portable fiber optic Raman spectroscopy combined with an oil microscopy method

Large Terahertz Phase Shift Induced by Photothermal Effect of Gold Nanoparticles Incorporated with Toluene

Determination of 10‐Hydroxy‐2‐Decenoic Acid of Royal Jelly Using Near‐Infrared Spectroscopy Combined with Chemometrics

Hydrogen evolution promotion of Au‐nanoparticles‐decorated TiO₂ nanotube arrays prepared by dip‐loading approach

High-Performance All-Optical Terahertz Modulator Based on Graphene/TiO₂/Si Trilayer Heterojunctions

Diagnosis of early gastric cancer based on fluorescence hyperspectral imaging technology combined with partial‐least‐square discriminant analysis and support vector machine

A new‐style poly(vinyl alcohol) gel prepared by automatic hydrolysis of poly(vinyl acetate) emulsion

Porous poly(vinyl formal) foam prepared using poly(vinyl alcohol) of low degree of polymerization

Detection of olive oil adulteration with waste cooking oil via Raman spectroscopy combined with iPLS and SiPLS

Manipulate the magnetic anisotropy of nanoparticle assemblies in arrays

An advanced wet method for simultaneous removal of SO2 and NO from coal-fired flue gas by utilizing a complex absorbent

Improve optical modulation depth of terahertz wave by monolayers of plasmonic nanoparticles

Identification of waste cooking oil and vegetable oil via Raman spectroscopy

A Better Reading Tutor That Listens

Qualitative Identification of Fish Meal and Meat Bone Meal via Fluorescence Spectral Imaging

Influence of soaking duration on the selective oxidation and galvanizability of a high‐strength dual phase steel

Earnings Management and the Accrual Anomaly: Evidence from China

A novel multi-band smart antenna with compact size for mobile phones

A Three-Layer Competition-Based Giant Magnetoresistive Assay for Direct Quantification of Endoglin from Human Urine

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