Ping Hu

Wuhan University of Technology

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Liqiang Mai

Wuhan University of Technology

Liang Zhou

Wuhan University of Technology

Xuanpeng Wang

Wuhan University of Technology

Ting Zhu

Wuhan University of Technology

Congcong Cai

Wuhan University of Technology

Yong Liu

Beijing University of Chemical Technology

Ce Wang

Jilin University

Hao Fan

Wuhan University of Technology

Xiujuan Wei

Ji Hua Laboratory

Mengyu Yan

Wuhan University of Technology

Cooperative Institutions

Wuhan University of Technology

137

Chinese Academy of Sciences

Tsinghua University

Materials Science & Engineering

Zhejiang University

Beijing University of Chemical Technology

Sichuan University

University of Chinese Academy of Sciences

Huazhong University of Science and Technology

Shanghai Jiao Tong University

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Off-Line Coupling of High-Resolution Capillary Electrophoresis to MALDI-TOF and TOF/TOF MS

Journal of Proteome Research (2002)

Tomáš Rejtar Ping Hu Péter Juhász J. M. Campbell Marvin L. Vestal

High-resolution capillary electrophoresis has been coupled to MALDI-TOF and TOF/TOF MS through off-line vacuum deposition onto standard stainless steel MALDI targets. This off-line approach allowed the decoupling of the separation from the MS analysis, thus allowing each to be independently optimized in terms of time. Using BSA tryptic digest as a model sample, the deposited streaks, roughly 100-μm wide, were first analyzed in the MS mode, consuming only a fraction of the sample. After data analysis, segments of the deposited trace, containing unidentified peptides, as well as several species chosen for sequence confirmation, were reanalyzed in the MS/MS mode using MALDI-TOF/TOF MS. Additionally, it is shown that the shot-to-shot reproducibility of the vacuum-deposited trace (5% RSD) is 1 order of magnitude lower than that found for the standard dried droplet method. Moreover, a linear dependence of signal intensities (relative to an internal standard) over 3 orders of magnitude was found for a peptide sample with concentrations ranging from 1 to 1000 nM. This paper demonstrates the potential of off-line coupling of high-resolution separations to MALDI-MS and MALDI-MS/MS using vacuum deposition for the analysis of complex peptide mixtures from protein digests. Keywords: high-resolution separation • capillary electrophoresis • MALDI-TOF MS • MALDI-TOF/TOF MS

MALDI imaging

Capillary electrophoresis–mass spectrometry

Sample Preparation

10.1021/pr015519o

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Citations (114)

Highly Durable Na₂V₆O₁₆·1.63H₂O Nanowire Cathode for Aqueous Zinc-Ion Battery

Nano Letters (2018)

Ping Hu Ting Zhu Xuanpeng Wang Xiujuan Wei Mengyu Yan

Rechargeable aqueous zinc-ion batteries are highly desirable for grid-scale applications due to their low cost and high safety; however, the poor cycling stability hinders their widespread application. Herein, a highly durable zinc-ion battery system with a Na2V6O16·1.63H2O nanowire cathode and an aqueous Zn(CF3SO3)2 electrolyte has been developed. The Na2V6O16·1.63H2O nanowires deliver a high specific capacity of 352 mAh g-1 at 50 mA g-1 and exhibit a capacity retention of 90% over 6000 cycles at 5000 mA g-1, which represents the best cycling performance compared with all previous reports. In contrast, the NaV3O8 nanowires maintain only 17% of the initial capacity after 4000 cycles at 5000 mA g-1. A single-nanowire-based zinc-ion battery is assembled, which reveals the intrinsic Zn2+ storage mechanism at nanoscale. The remarkable electrochemical performance especially the long-term cycling stability makes Na2V6O16·1.63H2O a promising cathode for a low-cost and safe aqueous zinc-ion battery.

10.1021/acs.nanolett.7b04889

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Citations (626)

FEM simulation of thermoforming of aeronautic transparent component with PMMA

기타자료 (2008)

Zhengchun Fu Ping Hu Haipeng Liu Yue Yan

Thermoforming

Component (thermodynamics)

Source

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Citations (0)

Synthesis on Modified Chloroprene Rubber Adhesive Dedicated to Bonding UHMWPE and 45# Steel

Advanced materials research (2012)

Qin Luo Ping Hu Ting Yue Zhang Xian Jiang Xiong

Methyl methacrylaten (MMA) was used to solution graft onto and modify chloroprene rubber (CR) to improve its adhesive strength. And chlorinated polyethylene (CPE) and magnesium oxide (MgO) were added to the optimum formula system of CR/MMA adhesive to prepare a better adhesive effect of CR/MMA/CPE /MgO adhesive dedicated to bonding UHMWPE and 45# steel. The performance of adhesive film was analyzed by Infrared spectroscope (IR), X-ray diffraction (XRD) and Comprehensive thermal analysis (TG-DTG). The results show that CR being grafted and modified by MMA and adding CPE and MgO in the optimum formula of CR-MMA adhesive can improve itself bonding effect of glue solution and the wetting effect of glue solution onto bonding interface, and all helped to improve bonding strength. Adding 18% of CPE and 8% of MgO (in relation to CR) in the optimum formula of CR-MMA which bonding strength is up to 0.8013MPa could make the prepared composite adhesive’ s bonding strength reach 1.2048MPa and heat resistance temperature be up to about 200°C.

Chloroprene

Adhesive Bonding

10.4028/www.scientific.net/amr.472-475.2868

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Citations (2)

Radiocarbon dating and calibration

Torbjörn E. Törnqvist B. E. Rosenheim Ping Hu Álvaro Fernández

This chapter discusses the role of 14C dating in sea-level research and includes a brief historical overview, an outline of the basic principles of 14C dating, and a discussion of the differences between the radiometric approach and accelerator mass spectrometry (AMS). Sources of error in 14C dating, specifically those relevant to sea-level studies, receive considerable attention. This includes uncertainties associated with isotopic fractionation and reservoir effects. The latter are of particular concern, especially in estuarine environments. Finally, 14C calibration and various widely used programs to convert 14C ages into calendar ages are discussed.

Radiometric dating

Accelerator mass spectrometry

Absolute dating

10.1002/9781118452547.ch23

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Citations (48)

Low energy oxygen ion beam modification of the surface morphology and chemical structure of polyurethane fibers

Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms (2005)

Kenneth Wong M. Zinke-Allmang W K Wan J.Z. Zhang Ping Hu

Surface Modification

Morphology

Chemical modification

Chemical structure

10.1016/j.nimb.2005.07.224

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Citations (15)

Mechanistic Insights of Zn‐Ion Storage in Synergistic Vanadium‐Based Composites

Advanced Functional Materials (2023)

Lingli Xing Xinyu Zhang Nuo Xu Ping Hu Kun Wang

Abstract A novel composite material Na 2 V 6 O 16 ·3H 2 O‐Al x V 2 O 5 (NVO‐AVO) is designed and synthesized for the first time in aqueous zinc ion battery cathode. The electrochemical behavior is elucidated in detail using in situ and ex situ techniques. The NVO‐AVO is simple, inexpensive, and safe to fabricate and contributes to the synergistic effect of orthorhombic Al x V 2 O 5 (AVO) and monoclinic Na 2 V 6 O 16 ·3H 2 O (NVO), the NVO‐AVO composites have fast Zn 2+ kinetics and exhibit good electrochemical properties. At 300 mA g −1 , the specific capacity is as high as 392.5 mA h g −1 , and even more excitingly, NVO‐AVO remains a specific capacity of 160.6 mA h g −1 even after 18 300 cycles at 5000 mA g −1 , which is significantly better than the stability of both NVO and AVO. The distinctive V 3 O 8 layered structure in Na 2 V 6 O 16 ·3H 2 O facilitates the diffusion of Zn 2+ , and structural water located between the V 3 O 8 layers facilitates rapid charge transfer by widening the gallery spacing and supposing more storage sites for Zn 2+ . In addition, Al x V 2 O 5 forms [AlO 6 ] octahedral units that enhance structural stability and play a crucial role in maintaining long‐term cycling stability. This work supports the theoretical basis and technical support for the development and extension studies of new vanadium‐based electrode materials.

Orthorhombic crystal system

Monoclinic crystal system

Structural Stability

10.1002/adfm.202312773

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Citations (9)

Determination of malachite green and crystal violet residues in aquatic products by high performance liquid chromatography

Ping Hu

Malachite green has been banned in aquaculture usage as drug in many countries,including China.In this paper,a better method for quantitative analyses of malachite green was developed using high performance liquid chromatography(HPLC).Based on this method,malachite green and leucomalachite green residues in aquatic products were determined.Its experimental operation was so simple that the test cost was reduced.The precision and recovery of the method were accord with the determination requirements.The results of random inspection of 526 samples of 15 kinds of aquatic products from major supermarkets and farmers markets in the city of Shenzhen showed that very few sample contained malachite green,the qualified rate being 93.5%.This indicates the supervision for the quality assurance of aquatic products has been obviously achieved by Shenzhen supervision departments in food safety.The method is helpful to food safety risk assessment.

Malachite green

Crystal violet

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File Encryption System Design Based on File System Filter Driver

Microelectronics & Computer (2009)

Ping Hu

The relation between file system driver and file system filter driver is described firstly. On the analysis of the procedure that the file system responds to the applications' requests,the way how to program the file system filter driver's main function is put forward,in addition,the methods to programming several important dispatch functions are brought forward. Furthermore,the means how the applications in user mode communicates with file system filter driver in kernel mode is described in detail.

Virtual file system

Mode (computer interface)

Source

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Citations (3)

Fabrication of a Novel Hybrid Heart Valve Leaflet for Tissue Engineering: An In Vitro Study

Artificial Organs (2009)

Hao Hong Nianguo Dong Jiawei Shi Si Chen Chao Guo

Abstract The objective of this study was to fabricate biomatrix/polymer hybrid heart valve leaflet scaffolds using an electrospinning technique and seeded by mesenchymal stem cells. Mesenchymal stem cells were obtained from rats. Porcine aortic heart valve leaflets were decellularized, coated with basic fibroblast growth factor/chitosan/poly‐4‐hydroxybutyrate using an electrospinning technique, reseeded, and cultured over a time period of 14 days. Controls were reseeded and cultured over an equivalent time period. Specimens were examined biochemically, histologically, and mechanically. Recellularization of the hybrid heart valve leaflet scaffolds was significantly improved compared to controls. Biochemical and mechanical analysis revealed a significant increase of cell mass, 4‐hydroxyproline, collagen, and strength in the hybrid heart valve leaflets compared to controls. This is the first attempt in tissue‐engineered heart valves to fabricate hybrid heart valve leaflets using mesenchymal stem cells combined with a slow release technique and an electrospinning technique.

Decellularization

Electrospinning

Hydroxyproline

10.1111/j.1525-1594.2009.00742.x

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Citations (55)