Article
Chemistry, Physical
Yongpeng Zhao, Hao Zhang, Xuan Yang, Hui Huang, Guolin Zhao, Tianze Cong, Xueqing Zuo, Zeng Fan, Shuaitao Yang, Lujun Pan
Summary: In this study, a novel composite of helical carbon nanocoils (CNCs) and Fe3O4@C core-shell structures was successfully synthesized, with different morphologies and multilevel heterostructural interfaces obtained by controlling the preparation process parameters. The composite exhibited excellent microwave absorption performance at a relatively thin thickness, and expanded the effective frequency range.
Article
Chemistry, Physical
Juan Ding, Ligang Cheng
Summary: The Fe3O4@SiO2@PANI ternary nanocomposite, prepared through a three-step method, demonstrates excellent microwave absorption properties with high RLmax and absorption bandwidth, making it a promising material for microwave absorbers in the field of electromagnetic waves.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Characterization & Testing
Hengqian Jin, Shufei Wei, Xinping Zhang, Huarong Nie, Aihua He
Summary: This study successfully fabricated novel hydrophilic multi-heterostructure composites (Mag@J/MWCNT), which combined nanostructured Fe3O4 covered snowman-like Janus nano-particles (Mag@J) with MWCNTs to enhance microwave absorption. The composites demonstrated good hydrophilicity, low reflection loss (RL), strong absorption intensity (RL = -38.98 dB), wide bandwidth (6.04-8.23 GHz), and low thickness (3.5 mm). The excellent microwave absorption properties were attributed to the strong dielectric loss, magnetic loss, and good impedance matching of different components, as well as multiple reflection absorption of microwave in the Janus particle's hollow sphere.
Article
Chemistry, Physical
Tao Jiang, Zhide Wang, Zhentao Luo, Jinghua He, Congcong Hu, Xueyu Xiang, Yufang Cao, Gang Fang, Kangsen Peng, Chuyang Liu
Summary: The study proposes the core-shell structured Ag@Fe3O4 composites for effective microwave absorption in a multi-band electromagnetic environment. By adjusting the core radius and shell thickness, a broad absorption bandwidth can be achieved. The composites have potential for practical applications.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Kang Zhang, Rui Qin, Siyao Chen, Xiangyang Liu, Yang Liu
Summary: Constructing magnetic-dielectric composites is an effective approach to prepare high-performance MWCNTs-based microwave absorbers. This study investigates the effect of different fluorination depths on the MWCNTs structure and microwave absorption performance, and finds that MWCNTs with deeper fluorination exhibit better absorption performance with defects on both inner and outer tubes.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Bochong Wang, Ying Ji, Congpu Mu, Yingjie Huo, Jianyong Xiang, Anmin Nie, Tianyu Xue, Kun Zhai, Zhongyuan Liu, Fusheng Wen
Summary: In this study, Fe3O4@polyaniline (Fe3O4@PANI) core-shell nanospheres were synthesized via a facile method and showed excellent microwave absorption properties. The conductive PANI coating significantly enhanced the microwave absorption ability of Fe3O4 nanospheres, leading to strong reflection loss and wide effective absorption bandwidth.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Yichen Wang, Wei Zhou, Guilin Zeng, Han Chen, Heng Luo, Xiaomeng Fan, Yang Li
Summary: The multi-shell hollow carbon submicrospheres (CSs) were designed to enhance microwave absorption performance, achieved through a combination of hydrothermal method, calcination, and etching process. The multi-shell CSs exhibited improved complex permittivity and tangent loss, with enhanced polarization occurring on the interfaces among different shells. This unique structure of multi-shell hollow CSs resulted in promising high-performance microwave absorbers, as indicated by the reflection loss (RL) reaching -48.5 dB with a wide effective absorption bandwidth of 4.2 GHz in the study.
Article
Materials Science, Multidisciplinary
Qiong Zhu, Xiaoxue Zhang, Xiaodong Wang, Xueling Wu, Zhihua Zhang, Jun Shen
Summary: In this study, carbon aerogel and Fe3O4 nanoparticle composites with core-shell structure were successfully prepared, showing strong microwave absorption and broad absorption bandwidth. The composite material exhibited a very low reflection loss value at 4.80 GHz and a wide effective absorption bandwidth.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Songyan Li, Xiaoxia Tian, Jiafu Wang, Lisi Ma, Chenchen Li, Zhe Qin, Shaobo Qu
Summary: This study successfully improved the microwave absorption performances of carbonyl iron powder by constructing a heterogeneous core-shell structure using multiwalled carbon nanotubes and binder Polypyrrole. By changing the thickness of the shell, the microwave absorption performances of the composites can be adjusted effectively, showing excellent microwave reflection loss and absorption bandwidth, which makes it a promising candidate for microwave absorption materials.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Physical
Huanhuan Zhu, Jie Liang, Jinfeng Chen, Hao Chang, Xiaoguang Jiao, Qingze Jiao, Caihong Feng, Hansheng Li, Yaoyuan Zhang, Yun Zhao
Summary: The construction of yolk-shell composites with dielectric/magnetic multiple loss mechanisms has shown promising results in obtaining high-efficiency microwave absorbing materials. The designed and synthesized CoFe2O4@carbon and Co3Fe7/FeO@carbon composites with yolk-shell structures exhibit improved microwave absorption behaviors and wider effective absorption bandwidth.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Meng Wu, Lei Rao, Lu Liu, Yuexia Li, Yuan Zhang, Ziying Ji, Guobing Ying
Summary: The development of lightweight microwave stealth materials for aerospace flying vehicles requires the use of lightweight absorbers with low density and high thermal stability. In this study, a hollow spherical structure with a uniform carbon shell around the urchin-like Fe3O4 core was synthesized. The Fe3O4@C absorber showed strong reflection loss and a maximum effective absorption bandwidth. The proposed core-shell structure provided good impedance matching and electromagnetic loss ability, and the urchin-like structure improved polarization, relaxation, and multiple scattering attenuations of electromagnetic waves.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Yujing Zhang, Yilin Zhang, Yuping Li, Minhao Yao, Xuefei Miao, Chuyang Liu, Huikun Zhao, Yanyan Shao, Feng Xu
Summary: BaTiO(3)pC nanoparticles with a core-shell nanostructure were successfully synthesized through a facile hydrothermal and dopamine carbonization process, demonstrating excellent microwave absorption properties. The formation of dense heterogeneous interfaces and conductive carbon shells on the nanoparticle surfaces enhanced the interfacial polarization, dipole polarization, and conductive loss, resulting in improved microwave absorption performance. This work provides a feasible approach for the efficient production of core-shell-structured nanoparticles with excellent absorption properties.
ACS APPLIED NANO MATERIALS
(2021)
Article
Engineering, Environmental
Wenjun Ma, Peng He, Tianyi Wang, Jian Xu, Xiaoyun Liu, Qixin Zhuang, Zhong-Kai Cui, Shaoliang Lin
Summary: The paper describes the fabrication and performance of a double-cavity yolk-shell hollow Fe3O4@C microwave absorber, which exhibits outstanding electromagnetic wave absorbing properties due to its unique structure and composition.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Yuanyuan Zhang, Xueyin Sun, Yong Yuan, Wenzhu Shao, Liang Zhen, Jiantang Jiang
Summary: Fe/Fe3O4 composite particles with mesoporous silica (mSiO2) shells were prepared via solvothermal reaction combined with hydrogen-thermal reduction. The addition of mSiO2 created a well-ventilated framework that maintained the dispersion of fine Fe particles. The conversion of Fe3O4 to Fe nanoparticles enhanced the ferromagnetic loss, while the interface of Fe3O4/Fe/mSiO2 induced an intensified dielectric loss. The Fe/Fe3O4@mSiO2 showed excellent electromagnetic wave-absorbing performances as fillers for electromagnetic absorption materials.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Yuanyuan Zhang, Yange Yu, Yong Yuan, Xueyin Sun, Wenzhu Shao, Liang Zhen, Jiantang Jiang
Summary: The Fe/Fe3O4 nanocomposite with mesoporous silica shell was successfully prepared, and further, reduced graphene oxide was introduced to obtain Fe-Fe3O4@mSiO(2)@RGO hollow core-shell composites. The introduction of mSiO(2) and RGO improved the electromagnetic wave absorption properties of the composites. The hollow core-shell structure demonstrated a promising approach for the design of lightweight and high-performance electromagnetic absorption materials.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Agriculture, Dairy & Animal Science
Kangshu Lan, Chenglong Shen, Jie Li, Shaowei Zhang, Xinrui Lan, Chuanying Pan, Yongsheng Wang
Summary: The ovary is crucial for animal fertility and livestock breeding industry. SEPT7 is a gene related to ovarian development, and it may affect ovarian traits through the regulation of miR-202. A novel indel locus of SEPT7 was found to be associated with ovarian length.
ANIMAL BIOTECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Lixin Liu, Pengyu Li, Yinghe Zhao, Haiyang Song, Teng Liu, Huiqiao Li, Tianyou Zhai
Summary: This study identifies zeolite-like molecules as potential dielectric materials for 2D semiconductors. These molecules exhibit similar properties to SiO2, the commonly used dielectric material in the Si-based semiconductor industry, and can form ideal interfaces with 2D semiconductors while preserving their intrinsic semiconductor properties. Additionally, the molecules with a zeolite-like backbone demonstrate remarkable environmental stability.
SCIENCE CHINA-MATERIALS
(2023)
Article
Nuclear Science & Technology
YaoDi Li, Mei Huang, YanTing Cheng, Boxue Wang, Xiangyuan Meng
Summary: In this study, a 3D simulation of deformation using CFD was conducted, revealing the significant influence of deformation on fluid flow and temperature changes, including reduced axial flow, transverse flow variations, and temperature increase.
ANNALS OF NUCLEAR ENERGY
(2023)
Article
Construction & Building Technology
Zizhang Zhan, Wei Sun, Shuaishuai Zhang, Qingbo Wen, Hongbo Zhang, Xiang Xiong
Summary: The addition of ZrB2 can enhance the ablation and mechanical properties of magnesium phosphate cement (MPC). The high thermal conductivity of ZrB2 additive and the evaporation of boron-containing oxides are crucial for reducing the surface temperature.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Peripheral Vascular Disease
Yong-Jun Wu, Chao-Qiang Jiang, Tong Zhu, Ya-Li Jin, Feng Zhu, Bai-Jing Zhou, Lin Xu, Wei-Sen Zhang
Summary: This study quantitatively examined the mediation effects of various obesity indicators on the association between age at menopause and blood pressure values. The results showed that body mass index (BMI), waist circumference (WC), waist-to-hip ratio (WHR), and waist-to-height ratio (WHtR) significantly mediated the positive association between later age at menopause and higher blood pressure values.
HYPERTENSION RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Jinhong Mei, Yu Liu, Yiyun Sheng, Ying Liu, Limin Chen, Hailong Wang, Minzhang Cheng, Zhenyu Zhai, Linlin Xu
Summary: The study reveals that activating transcription factor 1 (ATF1) plays a critical role in the progression of lung adenocarcinoma by transcriptionally enhancing zinc finger protein 143 (ZNF143) expression, leading to increased proliferation and migration of lung adenocarcinoma cells. High expressions of ATF1 and ZNF143 are associated with poor disease-free survival in lung adenocarcinoma patients. This study provides a potential therapeutic candidate for the treatment of lung adenocarcinoma.
ACTA BIOCHIMICA ET BIOPHYSICA SINICA
(2023)
Article
Materials Science, Textiles
Rui Yang, Xinmei Li
Summary: The purpose of this study was to create a porous micro-surface with a rough tertiary structure and develop a long-term sustained-release antibacterial hydrophobic membrane for moist, multi-extreme environments. The membrane exhibited super-hydrophobicity with a contact angle increasing from 30.8 degrees to 156 degrees in aqueous solution at pH 11. Incorporating nanoparticles into the spray layer enhanced membrane surface area and improved the slow-release effect of PVA-coated silver nanoparticles. The antibacterial properties of the composite membrane were optimized when the silver nanoparticles were embedded in the PVA fiber layer, resulting in a 3.1 cm antibacterial circle and sustained-release durability.
FIBERS AND POLYMERS
(2023)
Article
Engineering, Electrical & Electronic
Jiajia Chen, Jiacheng Xu, Zhi Gong, Jiani Gu, Xiao Yu, Chengji Jin, Yue Peng, Yan Liu, Bing Chen, Ran Cheng, Genquan Han
Summary: We have demonstrated experimentally for the first time that ferroelectricity can be controlled by injecting or extracting oxygen vacancies (V-o) reversibly from the interfacial layer (IL) to Hf0.5Zr0.5O2 (HZO). The IL, located between the TiN electrode and HZO thin film, acts as a crucial reservoir for Vo. By adjusting the electrical pre-stress time to modulate the concentration and distribution of V(o), HZO exhibits switchable multiferroelectricity. Additionally, the simulated results using a phase-field polarization switching model accurately reproduce the experimental multiferroelectricity, strongly supporting the mechanism of controlling multiferroelectricity through reversible modulation of V-o migration from IL into HZO.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Engineering, Industrial
Shuang Huang, Lidong Xu, Ming Lou, Hui Chen, Ke Zhang, Yongbing Li
Summary: An innovative 3D multi-phase numerical model was developed to study the pore formation mechanism in laser-MIG hybrid welding process. The model considered droplet transfer, metallic vapor, and molten pool dynamics, and successfully simulated the entire process of bubble generation, movement, merger, and shrinkage. The study revealed that counterclockwise and clockwise eddies occur in the upper and lower molten pool zones respectively, and a trap zone with near-zero flow velocity appears between them. The clockwise eddy in the lower zone tends to cause keyhole collapse and form bubbles, while the lower flow velocity of the clockwise eddy at high welding speed reduces pore formation.
JOURNAL OF MATERIALS PROCESSING TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Boyang Liu, Xiao Chen, Ning Huang, Shaoxiong Liu, Boyuan Shen, Fei Wei, Tiefeng Wang
Summary: Atomic details of Pt1@UiO-66 and Pd1@UiO-66-NH2 are revealed using low-dose integrated differential phase contrast scanning transmission electron microscopy (iDPCSTEM). Single Pt atoms locate on the benzene ring of p-benzenedicarboxylic acid (BDC) linkers in Pt@UiO-66, while single Pd atoms are adsorbed by the amino groups in Pd@UiO-66-NH2. However, Pt@UiO-66-NH2 and Pd@UiO-66 show obvious clusters. Therefore, amino groups do not always favor the formation of single atom catalysts (SACs), and density functional theory (DFT) calculations indicate that a moderate binding strength between metals and MOFs is preferred.
Article
Multidisciplinary Sciences
Huijuan Zhong, Shu Cheng, Xi Zhang, Bing Xu, Jiayi Chen, Xufeng Jiang, Jie Xiong, Yu Hu, Guohui Cui, Juying Wei, Wenbin Qian, Xiaobing Huang, Ming Hou, Feng Yan, Xin Wang, Yongping Song, Jianda Hu, Yuanhua Liu, Xuejun Ma, Fei Li, Chongyang Wu, Junmin Chen, Li Yu, Ou Bai, Jingyan Xu, Zunmin Zhu, Li Liu, Xin Zhou, Li Huang, Yin Tong, Ting Niu, Depei Wu, Hao Zhang, Chaofu Wang, Binshen Ouyang, Hongmei Yi, Qi Song, Gang Cai, Biao Li, Jia Liu, Zhifeng Li, Rong Xiao, Luqun Wang, Yujie Jiang, Yanyan Liu, Xiaoyun Zheng, Pengpeng Xu, Hengye Huang, Li Wang, Saijuan Chen, Weili Zhao
Summary: Reduced-intensity, non-intravenous ESA with sandwiched radiotherapy has been shown to be effective for early-stage nasal NKTCL, with a high overall response rate and low toxicity.
Article
Mechanics
Xingchen Luo, Jinliang Zhang, Fengwei Yang, Fei He, Yimin Xia
Summary: This study investigates the mechanisms of rock breaking using a disc cutter with front-mounted water jet precutting kerf. The effects of water jet kerf depth (H) and cutter spacing (S) on rock-breaking performance are studied through rock-cutting tests and numerical simulations. It is found that increasing H can reduce the vertical force and rolling force of the disc cutter, but it does not improve the internal crack expansion capacity of the rock. The optimal combination of S=80 mm and H=9 mm can promote main crack expansion and improve rock-cutting efficiency. Microscopic observation reveals that the fracture mechanism for the major crack is tensile type.
ENGINEERING FRACTURE MECHANICS
(2023)
Article
Environmental Sciences
Linlin Xu, Hu Yu, Linsheng Zhong
Summary: Tourism activities can interfere with landscape patterns and understanding their effects is crucial for decision-making in tourism development. This study investigated the influence of tourism activities on landscape patterns in the Xin'an River Basin. By comparing landscape pattern metrics and applying Morphological Spatial Pattern Analysis (MSPA), the response index (RI) was calculated. Results showed that scenic areas had a significantly higher RI (=-2.56) compared to other areas, indicating a stronger negative impact on the landscape pattern. The study also identified scenic area construction as a main factor contributing to landscape fragmentation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Physiology
Xinwei Wang, Jiulong Song, Peng Xia, Qiang Lin, Anliang Chen, Kai Cheng, Fane Kong, Yi Shi, Xueping Li
Summary: High-intensity interval training (HIIT) is a physical therapy that can alleviate osteoarthritis (OA)-associated hyperalgesia. Cacna2d1, a subunit protein of calcium channel, plays a crucial role in nerve cell activity. However, the effect of HIIT on OA hyperalgesia and the involvement of Cacna2d1 remains unclear. In this study, OA rat models were established using monosodium iodoacetate (MIA) injection, and different groups were compared. Pain threshold, cartilage analysis, Cacna2d1 expression, and pain neurotransmitters were measured. The results demonstrated that HIIT could attenuate OA-associated hyperalgesia, possibly through the down-regulation of Cacna2d1 expression.
JOURNAL OF PHYSIOLOGICAL SCIENCES
(2023)
Review
Chemistry, Inorganic & Nuclear
Yefei Jiang, Zhi-yong Zeng, Tongxia Jin, Zhiyong Peng, Lin Xu
Summary: Molecular necklaces (MNs) have attracted attention for their delicate structures and potential applications. However, complex synthetic routes have hindered further development. To overcome this challenge, coordination interactions have been employed to synthesize MNs. This review summarizes the progress in coordination-based MNs, focusing on design strategies and potential applications.
DALTON TRANSACTIONS
(2023)
Article
Materials Science, Multidisciplinary
Katerina Skopalova, Itana Nusa Bubanja, Dragomir Stanisavljev, Nikola Cvjeticanin, Vera Kasparkova, Eliska Dad'ova, Erika Pavlikova, Marek Koutny, Marija Gizdavic-Nikolaidis, Petr Humpolicek
Summary: This study compares the biological properties of PANI prepared by different synthesis methods and oxidizing agents, which improves its potential applications in the biomedical field.
Article
Materials Science, Multidisciplinary
Hui-Ping Li, Cai-Yan Gao, Zhi-Ping Chen, Xin-Heng Fan, Lian-Ming Yang
Summary: In this study, a novel type of D-A non-fused-ring copolymers was designed and synthesized to overcome the trade-off relationship between electrical conductivity and Seebeck coefficient in organic semiconductors. The incorporation of fluorine atoms into the polymer backbone effectively increased the ordered degree of molecular stacking and improved both the electrical conductivity and Seebeck coefficient. The bimodal orientation of polymers played a crucial role in decoupling the correlation between electrical conductivity and Seebeck coefficient.
Article
Materials Science, Multidisciplinary
Mansour A. S. Salem, Amjad Mumtaz Khan, Hatem A. M. Saleh, Khalil M. A. Qasem, Mizna Ahmed, Aadil Shafi Bhat, Abdulaziz Abdullah Qasem Ali, Younes S. A. Ghanem, Ali Alrabie, Abdel-Basit Al-Odayni, Waseem Sharaf Saeed, Basheer Al-Anesi
Summary: This research focuses on the versatile substance, polyaniline/layered double hydroxide (PANI@Nd-Co/LDH), under solvothermal conditions. A thorough analysis of its structure and morphology was conducted using various analytical methods. The findings showed that PANI@Nd-Co/LDH exhibited highly sensitive and specific fluorescence detection of Pb(II) and Al(III), outperforming other heavy metal ions. The sensor demonstrated a turn-off fluorescence response for Pb(II) ions and a turn-on fluorescence response for Al(III) ions. The minimum detectable limits (MDL) were determined to be 9.6 nM for Pb(II) and 220 nM for Al(III). PANI@Nd-Co/LDH could be easily regenerated and reused for multiple cycles. The detection mechanisms involved the inner filter effect (IFE) for Pb(II) and the chelation-enhanced fluorescence (CHEF) effect for Al(III). These results highlight the excellent potential of PANI@Nd-Co/LDH in the detection and recognition of Pb(II) and Al(III) ions.