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Constructive Robust Steganography Algorithm Based on Style Transfer

Computers, Materials and Continua 2024年第1期81卷 1433-1448页

作者： Zhang, xiong Zhang, Minqing Wang, Xu'an huang, Siyuan Di, Fuqiang College of Cryptography Engineering Engineering University of People's Armed Police Xi'an 710086 China Key Laboratory of People's Armed Police for Cryptology and Information Security Engineering University of People's Armed Police Xi'an 710086 China Key Laboratory of CTC & Information Engineering Ministry of Education Engineering University of People's Armed Police Xi'an 710086 China

Traditional information hiding techniques achieve information hiding by modifying carrier data, which can easily leave detectable traces thatmay be detected by steganalysis tools. Especially in image transmission, both geometric and non-geometric attacks can cause subtle changes in the pixels of the image during transmission. To overcome these challenges, we propose a constructive robust image steganography technique based on style transformation. Unlike traditional steganography, our algorithm does not involve any direct modifications to the carrier data. In this study, we constructed a mapping dictionary by setting the correspondence between binary codes and image categories and then used the mapping dictionary to map secret information to secret images. Through image semantic segmentation and style transfer techniques, we combined the style of secret images with the content of public images to generate stego images. This type of stego image can resist interference during public channel transmission, ensuring the secure transmission of information. At the receiving end, we input the stego image into a trained secret image reconstruction network, which can effectively reconstruct the original secret image and further recover the secret information through a mapping dictionary to ensure the security, accuracy, and efficient decoding of the information. The experimental results show that this constructive information hiding method based on style transfer improves the security of information hiding, enhances the robustness of the algorithm to various attacks, and ensures information security. © 2024 The Authors. Published by Tech Science Press.

关键词： Binary codes

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Role of adhesion molecules in cancer and targeted therapy

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Science China(Life Sciences) 2024年第5期67卷 940-957页

作者： Chunmei Fan Fang xiong Shanshan Zhang Zhaojian Gong Qianjin Liao Guiyuan Li Can Guo Wei xiong He huang Zhaoyang Zeng NHC Key Laboratory of Carcinogenesis and Hunan Key Laboratory of Cancer Metabolism Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of MedicineCentral South UniversityChangsha 410000China Department of Histology and Embryology Xiangya School of MedicineCentral South UniversityChangsha410013China Department of Stomatology Xiangya HospitalCentral South UniversityChangsha 410078China Department of Oral and Maxillofacial Surgery The Second Xiangya HospitalCentral South UniversityChangsha 410011China Key Laboratory of Carcinogenesis and Cancer Invasion of the Chinese Ministry of Education Cancer Research InstituteCentral South UniversityChangsha 410078China

Adhesion molecules mediate cell-to-cell and cell-to-extracellular matrix interactions and transmit mechanical and chemical signals among *** mechanisms deregulate adhesion molecules in cancer,enabling tumor cells to proliferate without restraint,invade through tissue boundaries,escape from immune surveillance,and survive in the tumor *** studies have revealed that adhesion molecules also drive angiogenesis,reshape metabolism,and are involved in stem cell *** this review,we summarize the functions and mechanisms of adhesion molecules in cancer and the tumor microenvironment,as well as the therapeutic strategies targeting adhesion *** studies have implications for furthering our understanding of adhesion molecules in cancer and providing a paradigm for exploring novel therapeutic approaches.

关键词： adhesion molecules tumor microenvironment invasion and metastasis reshaping metabolism angiogenesis immune evasion tumor stemness therapeutic strategy

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Efficient Polytelluride Anchoring for Ultralong-Life Potassium Storage: Combined Physical Barrier and Chemisorption in Nanogrid-in-Nanofiber

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Nano-Micro Letters 2024年第4期16卷 364-378页

作者： Qinghua Li Dandan Yu Jian Peng Wei Zhang Jianlian huang Zhixin Liang Junling Wang Zeyu Lin Shiyun xiong Jiazhao Wang Shaoming huang Guangzhou Key Laboratory of Low‑Dimensional Materials and Energy Storage Devices School of Materials and EnergyGuangdong University of TechnologyGuangzhou 510006People’s Republic of China College of Materials and Chemistry China Jiliang UniversityHangzhou 310018People’s Republic of China Institute for Superconducting and Electronic Materials Australian Institute for Innovative MaterialsUniversity of WollongongInnovation CampusSquires WayNorth WollongongNSW 2522Australia

Metal tellurides(MTes) are highly attractive as promising anodes for high-performance potassium-ion batteries. The capacity attenuation of most reported MTe anodes is attributed to their poor electrical conductivity and large volume variation. The evolution mechanisms, dissolution properties, and corresponding manipulation strategies of intermediates(K-polytellurides, K-pTe_(x)) are rarely mentioned. Herein,we propose a novel structural engineering strategy to confine ultrafine CoTe_(2) nanodots in hierarchical nanogrid-in-nanofiber carbon substrates(CoTe_(2)@NC@NSPCNFs) for smooth immobilization of K-pTe_(x) and highly reversible conversion of CoTe_(2) by manipulating the intense electrochemical reaction process. Various in situ/ex situ techniques and density functional theory calculations have been performed to clarify the formation, transformation, and dissolution of K-pTe_(x)(K_(5)Te_(3) and K_(2)Te), as well as verifying the robust physical barrier and the strong chemisorption of K_(5)Te_(3) and K_(2)Te on S, N co-doped dual-type carbon substrates. Additionally, the hierarchical nanogrid-in-nanofiber nanostructure increases the chemical anchoring sites for K-pTe_(x), provides sufficient volume buffer space, and constructs highly interconnected conductive microcircuits, further propelling the battery reaction to new heights(3500 cycles at 2.0 A g^(-1)). Furthermore, the full cells further demonstrate the potential for practical applications. This work provides new insights into manipulating K-pTe_(x) in the design of ultralong-cycling MTe anodes for advanced PIBs.

关键词： Polytelluride dissolution Nanogrid-in-nanofiber structure Physicochemical adsorption Reaction mechanism Ultralonglife potassium storage

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Sustainable all-weather CO2 utilization by mimicking natural photosynthesis in a single material

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National Science Review 2024年第2期11卷 177-187页

作者： Xianjin Shi Yu huang Ran Long Zhenyu Wang Liqin Wang Junji Cao Gangqiang Zhu Yujie xiong State Key Laboratory of Loess and Quaternary Geology(SKLLQG) Key Laboratory of Aerosol Chemistry and Physics Institute of Earth EnvironmentChinese Academy of Sciences Center of Excellence in Quaternary Science and Global Change Chinese Academy of Sciences University of Chinese Academy of Sciences Hefei National Research Center for Physical Sciences at the Microscale School of Chemistry and Materials Science and National Synchrotron Radiation Laboratory University of Science and Technology of China Institute of Atmospheric Physics Chinese Academy of Sciences School of Physics and Information Technology Shaanxi Normal University

Solar-driven CO2conversion into hydrocarbon fuels is a sustainable approach to synchronously alleviating the energy crisis and achieving net ***,the dependence of the conversion process on solar illumination hinders its practical application due to the intermittent availability of sunlight at night and on cloudy or rainy ***,we report a model material of Pt-loaded hexagonal tungsten trioxide（Pt/h-WO3） for decoupling light and dark reaction processes,demonstrating the sustainable CO2conversion under dark conditions for the first *** such a material system,hydrogen atoms can be produced by photocatalytic water splitting under solar illumination,stored together with electrons in the h-WO3through the transition of W6+to W5+and spontaneously released to trigger catalytic CO2reduction under dark ***,we demonstrate using natural light that CH4production can persist at night and on rainy days,proving the accomplishment of all-weather CO2conversion via a sustainable way.

关键词： sustainable CO2 utilization artificial photosynthesis all-weather application charge storage

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Bioinspired Closed-loop CPG-based Control of a Robotic Manta for Autonomous Swimming

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Journal of Bionic Engineering 2024年第1期21卷 177-191页

作者： Yiwei Hao Yonghui Cao Yingzhuo Cao xiong Mo Qiaogao huang Lei Gong Guang Pan Yong Cao School of Marine Science and Technology Northwestern Polytechnical UniversityXi'an 710072China Unmanned Vehicle Innovation Center Ningbo Institute of NPUNingbo 315103China Key Laboratory of Unmanned Underwater Vehicle Technology of Ministry of Industry and Information Technology Xi'an 710072China

Fish in nature exhibit a variety of swimming modes such as forward swimming,backward swimming,turning,pitching,etc.,enabling them to swim in complex scenes such as coral *** is still difficult for a robotic fish to swim autonomously in a confined area as a real ***,we develop an untethered robotic manta as an experimental platform,which consists of two flexible pectoral fins and a tail fin,with three infrared sensors installed on the front,left,and right sides of the head to sense the surrounding *** generate multiple swimming modes of the robotic manta and online switching of different modes,we design a closed-loop Central Pattern Generator(CPG)controller based on distance information and use a combination of phase difference and amplitude of the CPG model to achieve stable and rapid adjustment of yaw *** verify the autonomous swimming ability of the robotic manta in complex scenes,we design an experimental scenario with a concave *** experimental results show that the robotic manta can achieve forward swimming,backward swimming,in situ turning within the concave obstacle,and finally exit from the area safely while relying on the perception of external obstacles,which can provide insight into the autonomous exploration of complex scenes by the biomimetic robotic ***,the swimming ability of the robotic manta is verified by field tests.

关键词： Biomimetic robotic manta Central Pattern Generator Closed-loop control Backward swimming

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Comparative analysis of primate and pig cells reveals primate-specific PINK1 expression and phosphorylation

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Zoological Research 2024年第2期45卷 242-252页

作者： Xiu-Sheng Chen Rui han Yan-Ting Liu Wei huang Qi Wang Xin xiong Ying Zhang Jian-Guo Zhao Shi-Hua Li Xiao-Jiang Li Wei-Li Yang Guangdong Key Laboratory of Non-human Primate Research Key Laboratory of CNS Regeneration(Ministry of Education)GHM Institute of CNS RegenerationJinan UniversityGuangzhouGuangdong 510632China State Key Laboratory of Stem Cell and Reproductive Biology Institute of ZoologyChinese Academy of SciencesBeijing 100101China Beijing Institute for Stem Cell and Regenerative Medicine Beijing 100101China University of Chinese Academy of Sciences Beijing 100049China

PTEN-induced putative kinase 1(PINK1),a mitochondrial kinase that phosphorylates Parkin and other proteins,plays a crucial role in mitophagy and protection against *** in PINK1 and Parkin can lead to loss of function and early onset Parkinson's ***,there is a lack of strong in vivo evidence in rodent models to support the theory that loss of PINK1 affects mitophagy and induces ***,PINK1 knockout pigs(Sus scrofa)do not appear to exhibit *** our recent work involving non-human primates,we found that PINK1 is selectively expressed in primate brains,while absent in rodent *** extend this to other species,we used multiple antibodies to examine the expression of PINK1 in pig *** contrast to tissues from cynomolgus monkeys(Macaca fascicularis),our data did not convincingly demonstrate detectable PINK1expression in pig *** of PINK1 in cultured pig cells did not result in altered Parkin and BAD phosphorylation,as observed in cultured monkey cells.A comparison of monkey and pig striatum revealed more PINK1-phosphorylated substrates in the monkey ***,PINK1 knockout in pigs did not lead to obvious changes in the phosphorylation of Parkin and *** findings provide new evidence that PINK1expression is specific to primates,underscoring the importance of non-human primates in investigating PINK1function and pathology related to PINK1 deficiency.

关键词： PINK1 Parkin Mitochondria Phosphorylation Non-human primates Pigs

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Nano-flower spherical SnS2 combined with a special lithium storage mechanism as a multifunctional separator for lithium-sulfur batteries contributes to ultra-high initial discharge specific capacity

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Science China(Technological Sciences) 2024年第2期67卷 509-519页

作者： LIU HuaZhong xiong YaPing huang MouZhi CHEN ZongMin YANG Xiao ZhanG Ze YANG ZhenYu CAI JianXin School of Chemistry&Chemical Engineering Nanchang UniversityNanchang 330031China

The critical factors that limit the electrochemical performance of lithium-sulfur(Li-S)batteries are mainly the“shuttle effect”of polysulfides and the slow redox reaction between lithium polysulfides(LiPSs).Herein,a nano-sphere-type material selfassembled from tin disulfide nanosheets is designed and applied to the Li-S cell separator in this *** SnS_(2)@PP modified separator not only acts as a dual restriction for LiPSs by chemisorption and physical *** the same time,it improves the catalytic activity of the redox reaction between *** SnS_(2)has extremely high electrochemical ***,a portion of the lithium ions can be inserted into SnS_(2)to form Li_(x)SnS_(2)and contribute to the capacity during the first discharge of the *** addition,Li_(x)SnS_(2)possesses a high degree of stability,and it does not undergo further de-alloying reactions even at the high potential of the Li-S *** benefit is that the steady-state Li_(x)SnS_(2)acts as a lithium-containing *** can form special Li^(+)channels on the surface of the separator,thus greatly improving the efficiency of Li+*** results showed that the SnS_(2)@PP-based cell exhibited extremely high initial discharge specific capacity(1477 m Ah g^(-1)at 0.1 C)and excellent rate performance(631 m Ah g^(-1)at 5 C).Even after 1000 cycles at 2 C,the cell exhibited a low decay rate of 0.06%per cycle on *** addition,the superior electrochemical performance was obtained even with a high sulfur loading of 5.1 mg cm^(-2)and low electrolyte of E/S=8μL mg^(-1).

关键词： Li-S batteries modified separators polysulfides catalytic conversion high electrochemical activity

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RpUGT344J7 is involved in the reproduction switch of Rhopalosiphum padi with holocyclic life cycle

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Insect Science 2024年第4期31卷 1073-1089页

作者： Suji Wang Wenjie huang Mengtian Li Ni Wang Xi Liu Maohua Chen xiong Peng State Key Laboratory of Crop Stress Biology for Arid Areas Key Laboratory of Plant Protection Resources and Pest Management of Ministry of EducationKey Laboratory of Integrated Pest Management on the Loess Plateau of Ministry of Agriculture and Rural AffairsCollege of Plant ProtectionNorthwest A&F UniversityYanglingShaanxi ProvinceChina

Many aphid species exhibit both cyclical parthenogenesis(CP)and the obligate parthenogenesis(OP)life history,which are genetically *** CP aphid lineages,the parthenogenetic individuals can switch from asexual to sexual reproduction quickly in response to environmental factors such as changes in photoperiod and ***,the OP aphid lineages do not undergo sexual reproduction under any *** far,mechanisms underlying the reproduction switch in CP aphids have not been fully *** padi,a serious worldwide insect pest of wheat,has both CP and OP *** diphosphate-glycosyltransferases(UGTs)are enzymes that participate in the metabolic detoxification of ***,we identified 43 RpUGT genes from *** genome and transcriptome sequences,and found that:(1)the UGT content of the CP lineage was significantly higher than that in the OP lineage at the key time points when CP lineage mainly produce virginoparae,gynoparae,and males under inducing condition,while there were no significant difference under normal conditions;(2)RpUGT344J7 gene was highly expressed during the time points when CP lineages produce gynopara and males;(3)the critical time points for CP lineages to produce virginoparaee,gynoparae,and males were affected when the CP lineages were injected with dsRpUGT344J7;(4)the knockdown of RpUGT344J7 caused a significant reduction in the total number of virginoparae,gynoparae,and males in the offspring under inducing *** findings contribute to our understanding of the molecular mechanisms underlying the quick shift from asexual to sexual reproduction in aphid species.

关键词： bird cherry-oat aphid cyclical parthenogenesis obligate parthenogenesis reproduction switch uridine diphosphate-glycosyltransferases(UGTs)

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Synthesis of Organic-Inorganic Hybrid Aluminum Hypophosphite Microspheres Flame Retardant and Its Flame Retardant Research on Thermoplastic Polyurethane

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Journal of Wuhan University of Technology(Materials Science) 2024年第1期39卷 221-233页

作者：刘生鹏 XU Zhi ZhanG Xinyuan WEI Huan xiong Yun DING Yigang huang Wenbo 许莉莉 Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Key Laboratory for Green Chemical Process of Ministry of EducationSchool of Chemical Engineering and PharmacyWuhan Institute of TechnologyWuhan 430205China Hubei Three Gorges Laboratory Yichang 443007China School of Technology Materials Science and Engineering Wuhan Institute of TechnologyWuhan 430205China

Aluminum hypophosphite microspheres(AHP) were synthesized by hydrothermal method using NaH2PO2·H2O and AlCl3·6H2O as raw materials, and then the AHP microspheres were polymerized by surface polymerization of micro-nanospheres with cyclic cross-linked poly(cyclotriphosphazene-co-4,4'-sulfonyldiphenol)(PZS). A new organic-inorganic poly(phosphonitrile)-modified aluminum hypophosphite microspheres(PZS-AHP) were synthesized by encapsulation and applied to flame retardant thermoplastic polyurethane(TPU). The microstructure and chemical composition of the PZS-AHP microsphere were characterized by scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy and X-ray spectroscopy. The thermal stability of PZS-AHP microsphere was explored with thermogravimetric analysis. Thermogravimetric data indicate that the PZS-AHP microspheres have excellent thermal stability. The thermal and flame-retarding properties of the TPU composites were evaluated by thermogravimetric(TG), limited oxygen index tests(LOI), and cone calorimeter test(CCT). The TPU composite achieved vertical burning(UL-94) V-0 grade and LOI value reached 29.2% when 10 wt% PZS-AHP was incorporated. Compared with those of pure TPU, the peak heat release rate(pHRR) and total heat release(THR) of TPU/10%PZS-AHP decreased by 82.2% and 42.5%, respectively. The results of CCT indicated that PZS-AHP microsphere could improve the flame retardancy of TPU composites.

关键词： polyphosphazene thermoplastic polyurethane flame retardancy aluminum hypophosphite surface polymerization

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超临界CO_2辅助挤出PLA/粘土纳米复合材料的流变-形态-力学性能

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高分子材料科学与工程 2010年第11期26卷 104-106页

作者：陈兆科蒋果黄汉雄华南理工大学机械与汽车工程学院塑料橡胶装备及智能化研究中心广东广州510640

采用超临界CO2辅助挤出的方法,在双螺杆挤出机上制备了聚乳酸(PLA)/粘土纳米复合材料。采用旋转流变仪、透射电镜和力学性能测试对复合材料的流变、结构和性能进行了表征,分析超临界CO2对流变、形态和性能的影响。流变测试结果表明,纳... 详细信息

采用超临界CO2辅助挤出的方法,在双螺杆挤出机上制备了聚乳酸(PLA)/粘土纳米复合材料。采用旋转流变仪、透射电镜和力学性能测试对复合材料的流变、结构和性能进行了表征,分析超临界CO2对流变、形态和性能的影响。流变测试结果表明,纳米复合材料的复数黏度和储能模量均高于纯PLA,且表现出类固行为。透射电镜照片显示在加工流场中引入超临界CO2可使粘土在PLA基体中分散得更均匀。复合材料在拉伸过程中表现出屈服行为,断裂伸长率和拉伸强度分别从纯PLA的9.29%、41.60MPa提高到气体注入量为7%(质量分数,下同)时的24.74%、51.70MPa;无缺口冲击强度比纯PLA稍高。

关键词：超临界CO2 聚乳酸/粘土动态流变性能微观形态力学性能

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