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| 1 | Chromatographic fingerprinting and quantitative analysis for the quality evaluation of Xinkeshu tablet显示文摘A simple, sensitive and accurate method based on high performance liquid chromatography (HPLC) with diode array detector (DAD) was developed and validated for systematic quality evaluation of one type of traditional Chinese medicine preparations named Xinkeshu (XKS) tablet. In this study, the chromatographic fingerprints of XKS tablet were developed first, 23 peaks were selected as the common peaks to evaluate the similarities among different batches of XKS samples, which were manufactured in a long time span of three years. Additionally, simultaneous quantification of six markers in XKS tablet, including Danshensu, Protocatechuic aldehyde, Puerarin, Daidzin, Salvianolic acid B and Daidzein, was performed. The validation results showed that the developed method was specific, accurate, precise and robust. The preliminary explanation on why a close similarity between fingerprints did not exactly mean similar contents of chemical components in samples was given. The contribution of each chromatographic peak to similarity was also evaluated. The developed method offers an efficient, reliable and practical approach for systematic quality evaluation of XKS tablet. | Pei Wang Lian Li Hailong Yang Shijuan Cheng Yingzi Zeng Lei Nie Hengchang Zang | 2012 | Journal of Pharmaceutical Analysis2012，2，6： | 5 |
| 2 | Recent advances in two-photon imaging: technology developments and biomedical applications显示文摘In the past two decades, two-photon microscopy (TPM) transforms biomedicalresearch, allowing nondestructive high-resolution fluorescent molecular imaging and label-free imaging in vivo and in real time. Here we review the recent advances of TPM technologyincluding novel laser sources, new image acquisition paradiams, and microendoscopicimaging systems. Then, we survey the capabilities of TPM imagingof biological relevant molecules such as nicotinamideadenine dinucleotide (NADH), flavin adenine dinucleotide (FAD),and reactive oxygen species (ROS). Biomedical applications of TPM in neuroscience and cancer detection are demonstrated. | Yu Chen Hengchang Guo Wei Gong Luye Qin Hossein Aleyasin Rajiv R Ratan Sunghee Cho Jianxin Chen Shusen Xie | 2013 | Chinese Optics Letters2013，11，1： | 2 |
| 3 | Tailoring thermal conductivity of bulk graphene oxide by tuning the oxidation degree显示文摘Bulk graphene oxide(GO) shows great potential in a variety of applications, such as sensors,photodetectors, supercapacitors, lithium ion batteries and catalysts. However, its thermal conductivity,one of the most important and fundamental physical properties, is still less known. Herein, we have systematically investigated the thermal conductivity of bulk GOs and find that it can be tailored by tuning their oxidation degree during preparation process. Notably, the cross-plane thermal conductivity of bulk GO, in comparison with its precursor graphite, exhibits more than 100 times decrease at room temperature. The dependence of thermal conductivity of GO on oxidation degree is attributed to the chemical and structural changes by introducing oxygen atoms and oxygen-containing functional groups,which can lead to a significant enhancement in atomic-and nano-scale phonon scattering. Furthermore,we reveal that the thermal conductivity of bulk GOs exhibits evident anisotropic behavior. These results provide fundamental understanding and valuable information on thermal transport properties of bulk GOs for various practical applications. | Qing-Long Meng Hengchang Liu Zhiwei Huang Shuang Kong Peng Jiang Xinhe Bao | 2018 | Chinese Chemical Letters2018，29，5： | 2 |
| 4 | Power Consumption Model in Two-tiered Wireless Sensor Networks显示文摘 | ZHANG Wei LIU Hengchang ZHAO Baohua QU Yugui | 2006 | Chinese Journal of Electronics2006，15，1： | 2 |
| 5 | Role of the carrier gas flow rate in monolayer MoS2 growth by modified chemical vapor deposition显示文摘单层铝二硫化物(因为潜在的应用的变化,瞬间 2) 吸引了许多注意。然而,它的控制生长仍然是大挑战。这里,我们报导一个修改化学蒸汽免职方法种单层瞬间 2 。我们观察到瞬间 2 晶体的质量能被在加热阶段期间调节搬运人气体流动率极大地改进。这微妙的修正阻止在先锋之间的控制不了的反应,为高质量的单层瞬间 2 的生长的一个关键因素。基于优化煤气的流动率,瞬间 2 范围和薄片尺寸能被调整生长时间控制。 | Hengchang Liu Yuanhu Zhu Qinglong Meng Xiaowei Lu Shuang Kong Zhiwei Huang Peng Jiang Xinhe Bao | 2017 | Nano Research2017，10，2： | 1 |
| 6 | Simultaneous determination of losartan and EXV3174 in human plasma and urine utilizing liquid chromatography/tandem mass spectrometry 显示文摘 | MICHELLE P KERRY R HENGCHANG S | 2003 | J Pharm Biomed Anal2003，33，： | 1 |
| 7 | Structures and Properties Characterization of Acrylonitrile-butadiene-styrene /Organo-palygorskite Clay Composites显示文摘Palygorskite (PGS) and vinyl tris-(2-methoxyethoxy) silane (KH-172) modified palygorskite (OPGS) were used to prepare acrylonitrile-butadiene-styrene (ABS)/clay composites. Thermal stability of the composites was evaluated by using thermogravimetric analysis (TGA). The morphology of the fractured surface and the degree of dispersion of the clay in the ABS matrix were observed by scanning electron microscopy (SEM). X-ray diffraction (XRD) analysis results showed the variation of the crystal structure. Measurements of the tensile properties of the ABS/clay composites proved that the ABS/OPGS composited material represented the most excellent tensile property, because of good compatibility and dispersion of ABS with OPGS. | 张哲 CHANG Ying XU Jian WU Zhancui MA Hengchang 雷自强 | 2012 | Journal of Wuhan University of Technology(Materials Science)2012，27，6： | 1 |
| 8 | Determination of molecular weight of hyaluronic acid by near-infrared spectroscopy显示文摘 | DONG Qing ZANG Hengchang LIU Aihua | 2010 | Journal of Pharmaceutical and Biomedical Analysis2010，53，3： | 1 |
| 9 | Thermodynamic and Kinetic Analysis of Low-temperature Thermal Reduction of Graphene Oxide显示文摘The thermodynamic state and kinetic process of low-temperature deoxygenation reaction of graphene oxide(GO) have been investigated for better understanding on the reduction mechanism by using Differential Scanning Calorimetry(DSC), Thermogravimetry-Mass Spectrometry(TG-MS), and X-ray Photoelectron Spectroscopy(XPS). It is found that the thermal reduction reaction of GO is exothermic with degassing of CO_2, CO and H_2O. Graphene is thermodynamically more stable than GO. The deoxygenation reaction of GO is kinetically controlled and the activation energy for GO is calculated to be 167 k J/mol(1.73 e V/atom). | Kuibo Yin Haitao Li Yidong Xia Hengchang Bi Jun Sun Zhiguo Liu Litao Sun | 2011 | Nano-Micro Letters2011，3，1： | 1 |
| 10 | Rapid discrimination of geographical origin and evaluation of antioxidant activity of Salvia miltiorrhiza var. alba by Fourier transform near infrared spectroscopy显示文摘 | Xiaoju Duan Danlu Zhang Lei Nie Hengchang Zang | 2014 | Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy2014，，： | 1 |
| 11 | 显示文摘 | Yang Zhiwang Kang Qiaoxiang Ma Hengchang | 2004 | Journal of Molecular Catalysis A: Chemical2004，213，2： | 1 |
| 12 | Carbon fiber aerogel made from raw cotton: A novel, efficient and recyclable sorbent for oils and organic sol- vents显示文摘 | Bi Hengchang Yin Zongyou Cao Xiehong | 2013 | AdvMater2013，25，： | 1 |
| 13 | Wavy Lines in Twophoton Photo-polymerization Micro-fabrication 显示文摘 | Fengjie Qi Yan Li Hengchang Guo | 2004 | Optics Express2004，12，20： | 1 |
| 14 | Parallel Processing of Prestack Kirchhoff Time Migration on a PC Cluster显示文摘 | Dai Hengchang | 2005 | Computers and Geosciences2005，31，7： | 1 |
| 15 | Phylogenetic patterns suggest frequent multiple origins of secondary metabolites across the seed-plant‘tree of life’显示文摘To evaluate the phylogenetic patterns of the distribution and evolution of plant secondary metabolites(PSMs),we selected 8 classes of PSMs and mapped them onto an updated phylogenetic tree including 437 families of seed plants.A significant phylogenetic signal was detected in 17 of the 18 tested seed-plant clades for at least 1 of the 8 PSM classes using the D statistic.The phylogenetic signal,nevertheless,indicated weak clustering of PSMs compared to a random distribution across all seed plants.The observed signal suggests strong diversifying selection during seed-plant evolution and/or relatively weak evolutionary constraints on the evolution of PSMs.In the survey of the current phylogenetic distributions of PSMs,we found that multiple origins of PSM biosynthesis due to external selective forces for diverse genetic pathways may have played important roles.In contrast,a single origin of PSMs seems rather uncommon.The distribution patterns for PSMs observed in this study may also be useful in the search for natural compounds for medicinal purposes. | Yongzeng Zhang Tao Deng Lu Sun Jacob B.Landis Michael J.Moore Hengchang Wang Yuehua Wang Xiaojiang Hao Jijun Chen Shenghong Li Maonian Xu Pema-Tenzin Puno Peter H.Raven Hang Sun | 2021 | National Science Review2021，8，4： | 1 |
| 16 | Effects of Learning Parameters on Learning Procedure and Performance of a BPNN显示文摘 | Dai Hengchang MacBeth C | 1997 | Neural Networks1997，10，8： | 1 |
| 17 | Facile fabrication of paper-based flexible thermoelectric generator显示文摘Paper,as a foldable,pollution-free,and low-cost material,has become a suitable support substrate for producing flexible thermoelectric(TE)generators to realize waste heat recycling and the application of human-powered electronic devices.We propose a facile fabrication method to modify cellulose paper with inorganic TE powders via vacuum filtration,making a modified paper that possesses good thermoelectric properties.By connecting the modified paper to copper foils,flexible paper-based TE generators(PTGs)are fabricated.The obtained PTG with three units of P–N modules can generate an output voltage of∼41.2 mV at a temperature difference of 50 K.Based on this modified paper,a thermal sensor that responds to heat sources,such as fingers,is proposed with a rapid response time of 0.25 s.This work offers a promising strategy for the simple fabrication of PTGs,paving the way for achieving the commercial application of self-powered wearable electronics. | Zuoyuan Dong Hua Liu Xin Yang Jichen Fan Hengchang Bi Chaolun Wang Yonghua Zhang Chen Luo Xinqian Chen Xing Wu | 2021 | npj Flexible Electronics2021，5，1： | 1 |
| 18 | Converted wave im aging in anisotropic media显示文摘 | Xiangyang Li Hengchang Dai Fabio Mancini | 2007 | Geophysical Prospecting2007，55，： | 1 |
| 19 | Velocity model updating in prestack Kirchhoff time migration for PS converted waves 显示文摘 | Hengchang Dai Xiangyang Li | 2007 | Geophysical Prospecting2007，55，： | 1 |
| 20 | Parallel processing of prestack Kirchhoff time migration on a PC cluster 显示文摘 | Dai Hengchang | 2005 | Computers Geosciences2005，31，7： | 1 |
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