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Investigation of hydrolysis conditions and properties on protein hydrolysates from flatfish skin

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Frontiers of Chemical Science and Engineering 2013年第3期7卷 303-311页

作者： Hua ZHANG Hongji ZHU shipeng wang Weihua wang Key Laboratory of Systems Bioengineering (Ministry of Education) School of Chemical Engineering and Technology Tianjin University Tianjin 300072 China

Response surface method （RSM）, based on Box-Behnken design, was used to optimize the enzymatic hydrolysis conditions of flatfish skin protein hydrolysates （FSPH）. Among the tested proteases, the combination of nutrase and trypsin was selected. The optimal hydrolysis conditions were as follows： pH 7.3, temperature 51.8℃, and the enzyme/substrate （E/S） ratio 2.5; under these conditions, the maximum peptide yield （PY） was 69.41 =1：0.43%. The physiochemical analysis showed that the amino acids （His, Asp and Glu） of FSPH accounted for 18.15%, and FSPH was a mixture of polypeptides mostly distributed among 900-2000 Da. FSPH could exhibit a 93% chelating effect on ferrous ion at a concentration of 400 gg/mL, and also a notable reducing power. This study showed bioprocess for the production of FSPH for the first time, which had a good potential for valuable ingredients in the food, cosmetic and medicine industries.

关键词： flatfish skin protein hydrolysates metal chelating activity reducing power

Silicon-based on-chip hybrid(de)multiplexers

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Science China(Information Sciences) 2018年第8期61卷 90-103页

作者： Chenlei LI Hao WU Ying TAN shipeng wang Daoxin DAI Centre for Optical and Electromagnetic Research State Key Laboratory for Modern Optical InstrumentationCollege of Optical Science and Engineering Zhejiang University

A review is given on the recent progress of silicon-based on-chip hybrid multiplexers, which are the key elements to enable more than one(de)multiplexing techniques simultaneously, including wavelengthdivision-multiplexing(WDM), polarization-division-multiplexing(PDM), and mode-division-multiplexing(MDM). This helps enhance the link capacity of optical interconnects multiplexed with many *** first part gives a review on the recent developed silicon-based hybrid WDM-PDM(de)multiplexers enabling WDM and PDM simultaneously, which helps achieve 2 N channels by introducing N wavelengths and dual polarizations. The recent progress of silicon-based hybrid WDM-MDM(de)multiplexers developed is reviewed in the second part. With the hybrid WDM-MDM(de)multiplexers, one can achieve N × M channels by using N wavelengths and M guided-modes. Finally, the silicon-based hybrid MDM-PDM(de)multiplexers are presented as the key to enhance the link capacity for a single wavelength carrier.

关键词： silicon photonics (de)multiplexing wavelength mode polarization waveguide

Formation behaviors of rod-like reactive shaped charge penetrator and their effects on damage capability

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Defence Technology（防务技术） 2024年第2期32卷 242-253页

作者： Tao Sun Haifu wang shipeng wang Chao Ge Die Hu Pengwan Chen Yuanfeng Zheng Beijing Institute of Technology State Key Laboratory of Explosion Science and TechnologyBeijing100081China Xi'an Institute of Electromechanical Information Technology Xi'an710065China

Formation behaviors of rod-like reactive shaped charge penetrator(RRSCP)and their effects on damage capability are investigated by experiments and numerical *** pulsed X-ray technology and a spaced aluminum/steel plate with the thicknesses of 5 mm/100 mm are *** types of sphericalsegment aluminum-polytetrafluoroethylene-copper(Al-PTFE-Cu)reactive liners with Cu contents of 0%,46.6%,and 66%are fabricated and *** experimental results show that the reactive liners can form excellent rod-shaped penetrators with tail skirts under the shaped charge effect,but the tail skirts disappear over ***,rupturing damage to the aluminum plate and penetration to the steel plate are caused by the RRSCP *** simulation analysis,the RRSCP is formed by a mechanically and chemically coupled response with the reactive liner activated by shock in its outer walls and bottom and then backward overturning,forming a leading reactive penetrator and a following chemical energy *** unique formation structure determines the damage modes of the aluminum plate and the steel *** analysis indicates that the formation behaviors and damage capability of Al-PTFE-Cu RRSCP strongly depend on Cu *** increasing Cu content,the velocity,activation extent,and reaction extent of Al-PTFE-Cu RRSCP decrease,which contribute to elongation and alleviate the negative effects of chemical reactions on elongation,significantly increasing the length-diameter ratio and thus enhancing the capability of steel plate ***,the lower activation extent and energetic density will weaken the RRSCP's capability of causing rupturing damage to the aluminum plate.

关键词： Reactive materials Al-PTFE composites Reactive liner X-ray Penetration

A Novel Orthogonal LoRa Multiple Access Algorithm for Satellite Internet of Things

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China Communications 2022年第3期19卷 279-289页

作者： Chengwen Zhang Liankai wang Libin Jiao shipeng wang Jun Shi Jia Yue School of Electronics and Information Engineering Harbin Institute of TechnologyHarbin 150080China Science and Technology on Communication Networks Laboratory Shijiazhuang 050081China Key Laboratory of Police Wireless Digital Communication Ministry of Public SecurityHarbin 150001China

In recent years,LoRa has been extensively researched in the satellite Internet of Things(IoT).However,the multiple access technology of LoRa is still one of the bottlenecks of satellite *** improve the multiple access performance of LoRa satellite IoT,based on the orthogonality of LoRa symbols in the fractional domain,this paper proposes a low complexity Orthogonal LoRa Multiple Access(OLMA)algorithm for multiple LoRa users occupying the same frequency *** algorithm introduces the address code to divide the fractional bandwidth into multiple parts,and the OLMA users with different address codes occupy different parts to transmit the information code,thus avoiding mutual interference caused by collisions in the same frequency *** multiple access capability of OLMA can be flexibly configured only by simply adjusting the length of the address code according to the actual application requirements of data *** analysis and simulation results show that the OLMA algorithm can greatly improve the multiple access capability and the total transmission bit rate of LoRa IoT without changing the existing LoRa modulation parameters and process.

关键词： LoRa satellite Internet of Things multiple access fractional domain linear frequency modulation

Enhanced interfacial polarization of defective porous carbon confined CoP nanoparticles forming Mott-Schottky heterojunction for efficient electromagnetic wave absorption

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Nano Research 2023年第3期16卷 4160-4169页

作者： Baojun wang Fangzhi Huang Hao Wu Zijie Xu shipeng wang Qinghua Han Fenghua Liu Shikuo Li Hui Zhang School of Materials Science and Engineering Anhui UniversityHefei 230601China School of Chemistry and Chemical Engineering Anhui UniversityHefei 230601China Ningbo Institute of Materials Technology and Engineering Chinese Academy of ScienceNingbo 315201China Key Laboratory of Structure and Functional Regulation of Hybrid Materials(Anhui University) Ministry of EducationHefei 230601China

Integrating heterogeneous interface through nanostructure design and interfacial modification is essential to realize strengthened interfacial polarization relaxation in electromagnetic wave ***,an in-depth comprehension of the interfacial polarization behavior at hetero-junction/interface is highly desired but remains a great ***,a Mott-Schottky heterojunction consisting of honeycomb-like porous N-doped carbon confined CoP nanoparticles(CoP@HNC)is designed to elevate the interfacial polarization ***,corresponding electron migration and redistribution between the heterointerface of defective carbon and CoP nanoparticles are *** significant difference in the work function on both sides of heterogeneous interface boosts the interfacial polarization in high frequency ***,the relevant spectroscopic characterizations demonstrate that electron spontaneously migrates from CoP to N-doped carbon at the heterointerface,thereby contributing to the accumulation of electron on defective carbon side and the distribution of hole on CoP ***,benefitting from the synergistic effects of three-dimensional porous conductive carbon skeleton,foreign N heteroatoms,special CoP nanoparticles,and the resultant CoP/N-doped carbon Mott-Schottky heterojunction,the CoP@HNC exhibits remarkable electromagnetic wave absorption performances with minimum reflection loss up to−60.8 dB and the maximum effective absorption bandwidth of 4.96 GHz,which is superior to most of recently reported transition metal phosphides microwave absorbing *** present work opens a new avenue for designing heterogeneous interface to realize strengthened microwave absorption capability and also reveals the in-depth influence of interface structure on electromagnetic wave absorption.

关键词： honeycomb-like structure Mott-Schottky heterojunction interfacial polarization electron transfer microwave absorption

Promoting the microwave absorption performance of hierarchical CF@NiO/Ni composites via phase and morphology evolution

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International Journal of Minerals,Metallurgy and Materials 2023年第3期30卷 494-503页

作者： shipeng wang Ziyan Liu Qiangchun Liu Baojun wang Wei Wei Hao Wu Zijie Xu Shikuo Li Fangzhi Huang Hui Zhang School of Materials Science and Engineering Anhui UniversityHefei 230601China Key Laboratory of Structure and Functional Regulation of Hybrid Materials Ministry of EducationAnhui UniversityHefei 230601China School of Chemistry and Chemical Engineering Anhui UniversityHefei 230601China School of Physics and Electronic Information Huaibei Normal UniversityHuaibei 235000Chin

Lightweight and efficient carbon-based microwave absorbents are significant in addressing the increasing severity of electromagnetic *** this study,hierarchical NiO/Ni nanosheets with a tuneable phase and morphology supported on a carbon fiber substrate(CF@NiO/Ni)were fabricated using a hydrothermal approach and post-annealing *** the annealing temperature increases,more metallic Ni is formed,and an apparent porosity appears on the sheet *** from the advantages of a three-dimensional(3D)conducting network,hierarchical porous structure,reinforced dipole/interface polarization,multiple scattering,and good impedance matching,the CF@NiO/Ni-500 composite exhibits an excellent microwave absorption performance even at a filling rate of only 3wt%.Specifically,its minimal reflection loss is-43.92 dB,and the qualified bandwidth is up to 5.64 *** addition,the low radar cross-section area of the CF@NiO/Ni composite coating confirms its strong ability to suppress electromagnetic wave *** expect that this work could contribute to a deeper understanding of the phase and morphology evolution in enhancing microwave absorption.

关键词： carbon fiber nickel nickel oxide interfacial polarization microwave absorption

Asymmetric directional couplers based on silicon nanophotonic waveguides and applications

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Frontiers of Optoelectronics 2016年第3期9卷 450-465页

作者： Daoxin DAI shipeng wang State Key Laboratory for Modem Optical Instrumentation Centre for Optical and Electromagnetic ResearchZhejiang Provincial Key Laboratory for Sensing Technologies Zhejiang University Hangzhou 310058 China

Directional couplers （DCs） have been playing an important role as a basic element for realizing power exchange. Previously most work was focused on symmetric DCs and little work was reported for asymmetric directional couplers （ADCs）. In recently years, silicon nanophotonie waveguides with ultra-high index contrast and ultra-small cross section have been developed very well and it has been shown that ADCs based on silicon-oninsulator （SOI） nanophotonic waveguides have some unique ability for polarization-selective coupling as well as mode-selective coupling, which are respectively very important for polarization-related systems and mode-division-mulitplexing systems. In this paper, a review is given for the recent progresses on silicon-based ADCs and the applications for power splitting, polarization beam splitting, as well as mode conversion/（de）multiplexing.

关键词： silicon photonics asymmetric directional couplers (ADCs) polarization-division multiplexing (PDM) mode-division multiplexing (MDM) polarization beam splitter (PBSs)

Functionalization of Magnetic Titanium Dioxide for Targeted Drug Delivery and UV-induced Release

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Chemical Research in Chinese Universities 2017年第2期33卷 294-297页

作者： CAI Linjun LI Junbo wang shipeng ZHAO Mengzhe ZHAO Bing JIANG Chunlai KONG Wei National Engineering Laboratory for AIDS Vaccine College of Life Sciences Jilin University Changchun 130012 P. R. China State Key Laboratory of Supramolecular Structure and Materials College of Chemistry Jilin University Changchun 130012 R R. China

Magnetic titanium dioxide core-shell nanoparticles（Fe3O4@TiO2 NPs） were synthesized as particles withappropriate size for intravenous injection. They subsequently were functionalized with p-aminothiophenol（PATP） tofacilitate the covalent attachment of target drugs through azo coupling reaction, which can be universally observed ina variety of drugs containing phenols, anilines, and imidazoles. The proposed drug nanocarrier was designed to po-ssess the ability to release drugs upon UV irradiation because of the photocatalytic property of the TiO2 shells. All theresults indicate the potential application of the Fe3O4@TiO2 NPs in targeted drug delivery with greater chemical sta-bility and universality.

关键词： Magnetic titanium dioxide Targeted drug delivery Azo coupling

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人工智能可能性的“双重参照”

江汉论坛 2022年第2期 24-31页

作者：王世鹏华中师范大学马克思主义学院哲学系湖北武汉430079

人工智能可能性问题是关于人工智能的所有哲学研究的核心和枢纽。追问人工智能可能性的一个前提是追问“人工智能”这个概念的可能性。“人工智能”概念含有其自身无法摆脱的范畴错误(category mistake),并不断有各种在用法上相互矛盾... 详细信息

人工智能可能性问题是关于人工智能的所有哲学研究的核心和枢纽。追问人工智能可能性的一个前提是追问“人工智能”这个概念的可能性。“人工智能”概念含有其自身无法摆脱的范畴错误(category mistake),并不断有各种在用法上相互矛盾的新的意义被赋予到这个概念当中。人工智能概念范畴错误的根源在于对人工智能可能性的追问中隐含着一个“双重参照”:一方面,人永远以自身为参照来追问人工智能的可能性;另一方面,人以永远处于可能状态中的人工智能为参照来追问人自身。作为哲学问题的人工智能可能性,有其独特的提问方式,它与心灵观问题、心身关系问题和人的同一性问题交织在一起,显示出人与人工智能的一致性和差异性。人工智能可以看作是人自身的一个镜像,把人的样子投射于其中,而且将处在人工智能可能性限度之外的意义、体验和错误这三种独属于人的能力呈现出来。

关键词：人工智能可能性 “双重参照”

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