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| 1 | Flexible design of gradient multilayer nanofilms coated on carbon nanofibers by atomic layer deposition for enhanced microwave absorption performance显示文摘阻抗匹配为完成高效率的微波吸收器是重要的。象纯金属和碳 nanomaterials 那样的绝缘的损失材料的高传导性通常由于在吸收器和表情之间匹配的低阻抗导致差的吸收。因为他们的吸引人的特征,碳 nanostructures 很包括低密度,高表面区域,和好稳定性为高效率的吸收正在答应候选人。此处,新策略被建议改进作为一个例子用 electrospun 碳 nanofibers 绝缘的损失材料匹配的阻抗。碳 nanofibers 与明确地设计的坡度是涂的有逐渐地增加 electroconductibility 的多层的 nanofilms 由与不同艾尔 2 O 3 内容(偶氮) 旁边原子层免职。也就是,坡度 nanofilms 由绝缘的电影的五层组成纯艾尔 2 O 3, 偶氮(5:1,到艾尔 2 O 3), 纯 ZnO,偶氮(10:1 ) ,并且偶氮(20:1 ) 。万用的坡度电影用作中间的层调节在空气和碳 nanofiber 表面之间匹配的阻抗。因此,与讲道理地选择的厚度的电影显著地展出的坡度涂的碳 nanofibers 提高了微波吸收性能,和最佳的思考损失活动范围在有仅仅 1.8 公里的厚度的 16.2 GHz 的 58.5 dB。这个工作能进一步帮助理解阻抗匹配到微波吸收的贡献。我们的策略是一般的并且能被使用在新窗户中在另外的 fields.Open | Shichao Zhao Lili Yan Xiaodong Tian Yequn Liu Chaoqiu Chen Yunqin Li Jiankang Zhang Yan Song Yong Qin | 2018 | Nano Research2018，11，1： | 8 |
| 2 | Activating interfacial S sites of MoS_(2) boosts hydrogen evolution electrocatalysis显示文摘The hydrogen evolution reaction(HER)of molybdenum disulfide(MoS_(2))is limited in alkaline and acid solution because the active sites are on the finite edge with extended basal plane remaining inert.Herein,we activated the interfacial S sites by coupling with Ru nanoparticles on the inert basal plane of MoS_(2)nanosheets.The density functional theory(DFT)calculation and experimental results show that the interfacial S electronic structure was modulated.And the results of∆G H*demonstrate that the adsorption of H on the MoS_(2)was also optimized.With the advantage of interfacial S sites activation,the Ru-MoS_(2)needs only overpotential of 110 and 98 mV to achieve 10 mA·cm^(–2)in both 0.5 M H_(2)SO_(4)and ^(1) M KOH solution,respectively.This strategy paves a new way for activating the basal plane of other transition metal sulfide electrocatalysts for improving the HER performance. | Shuo Geng Fenyang Tian Menggang Li Yequn Liu Jie Sheng Weiwei Yang Yongsheng Yu Yanglong Hou | 2022 | Nano Research2022，15，3： | 5 |
| 3 | A feedback-retransmission based asynchronous frequency hopping MAC protocol for military aeronautical ad hoc networks显示文摘Attacking time-sensitive targets has rigid demands for the timeliness and reliability of information transmission, while typical Media Access Control(MAC) designed for this application works well only in very light-load scenarios; as a consequence, the performances of system throughput and channel utilization are degraded. For this problem, a feedback-retransmission based asynchronous FRequency hopping Media Access(FRMA) control protocol is proposed. Burst communication, asynchronous Frequency Hopping(FH), channel coding, and feedback retransmission are utilized in FRMA. With the mechanism of asynchronous FH, immediate packet transmission and multi-packet reception can be realized, and thus the timeliness is improved.Furthermore, reliability can be achieved via channel coding and feedback retransmission. With theories of queuing theory, Markov model, packets collision model, and discrete Laplace transformation, the formulas of packet success probability, system throughput, average packet end-to-end delay, and delay distribution are obtained. The approximation accuracy of theoretical derivation is verified by experimental results. Within a light-load network, the proposed FRMA has the ability of millisecond delay and 99% reliability as well as outperforms the non-feedback-retransmission based asynchronous frequency hopping media access control protocol. | Jinhui TANG Yequn WANG Shufu DONG Qilu SUN Guoce HUANG | 2018 | Chinese Journal of Aeronautics2018，31，5： | 4 |
| 4 | Abnormal Effective Connectivity of the Anterior Forebrain Regions in Disorders of Consciousness显示文摘A number of studies have indicated that disorders of consciousness result from multifocal injuries as well as from the impaired functional and anatomical connectivity between various anterior forebrain regions.However, the specific causal mechanism linking these regions remains unclear. In this study, we used spectral dynamic causal modeling to assess how the effective connections(ECs) between various regions differ between individuals. Next, we used connectome-based predictive modeling to evaluate the performance of the ECs in predicting the clinical scores of DOC patients. We found increased ECs from the striatum to the globus pallidus as well as from the globus pallidus to the posterior cingulate cortex, and decreased ECs from the globus pallidus to the thalamus and from the medial prefrontal cortex to the striatum in DOC patients as compared to healthy controls.Prediction of the patients' outcome was effective using the negative ECs as features. In summary, the present study highlights a key role of the thalamo-basal ganglia-cortical loop in DOCs and supports the anterior forebrain mesocircuit hypothesis. Furthermore, EC could be potentially used to assess the consciousness level. | Ping Chen Qiuyou Xie Xiaoyan Wu Huiyuan Huang Wei Lv Lixiang Chen Yequn Guo Shufei Zhang Huiqing Hu You Wang Yangang Nie Ronghao Yu Ruiwang Huang | 2018 | Neuroscience Bulletin2018，34，4： | 4 |
| 5 | Engineering defects and adjusting electronic structure on S doped MoO2 nanosheets toward highly active hydrogen evolution reaction显示文摘The electrocatalytic hydrogen evolution reaction(HER)is one of the most promising ways for low-cost hydrogen production in the future.In this work,hetero S atoms were introduced into the MoO2 to enhance the catalytic activity by simultaneously adjusting electron structure,engineering lattice defect,and increasing oxygen vacancies.And the S doped MoO2 nanosheets with proper S doping amount show the enhanced performance for HER.The optimized catalyst shows a small onset overpotential as low as 120 mV,a low overpotential of 176 mV at the current density of 10 mA/cm^2 which is decreased 166 mV compared to that of the pristine MoO2 nanosheets,a low Tafel slope of 57 mV/decade,and a high turnover frequency of 0.13 H2/s per active site at 150 mV.This finding proposes an effective strategy to prepare nonprecious metal oxide catalyst for enhancing HER performance by rationally doping hetero atoms. | Shuo Geng Yequn Liu Yong Sheng Yu Weiwei Yang Haibo Li | 2020 | Nano Research2020，13，1： | 3 |
| 6 | Homocysteine activates vascular smooth muscle cells by DNA demethylation of platelet-derived growth factor in endothelial cells显示文摘 | Donghong Zhang Yequn Chen Xina Xie Jianlan Liu Qingjie Wang Wei Kong Yi Zhu | 2012 | Journal of Molecular and Cellular Cardiology2012，，4： | 3 |
| 7 | Evaluation of four-dimensional nonbinary LDPC-coded modulation for next-generation long-haul optical transport networks显示文摘 | Zhang Yequn M Arabaci I B Djordjevic | 2012 | Opt Express2012，20，8： | 1 |
| 8 | NMR studies of stock process water and reaction pathways in hydrothermal carbonization of furfural residue显示文摘Hydrothermal carbonization(HTC) is a valuable approach to convert furfural residue(FR) into carbon material. The prepared biochars are usually characterized comprehensively, while the stock process water still remains to be studied in detail. Herein, a NMR study of the main components in stock process water generated at different HTC reaction conditions was reported. Various qualitative and quantitative NMR techniques(~1H and ^(13)C NMR,~1H-~1H COSY and ~1H-^(13)C HSQC etc.) especially 1D selective gradient total correlation spectroscopy(TOCSY NMR) were strategically applied in the analysis of HTC stock process water. Without separation and purification, it was demonstrated that the main detectable compounds are 5-hydroxymethylfurfural, formic acid, methanol, acetic acid, levulinic acid, glycerol, hydroxyacetone and acetaldehyde in this complicate mixture. Furthermore, the relationship between the concentration of major products and the reaction conditions(180-240 ℃ at 8 h, and 1-24 h at 240 ℃) was established. Finally, reasonable reaction pathways for hydrothermal conversion of FR were proposed based on this result and our previously obtained characteristics of biochars. The routine and challenging NMR methods utilized here would be an alternative other than HPLC or GC for biomass conversion research and can be extended to more studies. | Fen Yue Christian Marcus Pedersen Xiuyin Yan Yequn Liu Danlei Xiang Caifang Ning Yingxiong Wang Yan Qiao | 2018 | Green Energy & Environment2018，3，2： | 1 |
| 9 | Microstructure difference between core and skin of T700 carbon fibers in heat-treated carbon/carbon composites显示文摘 | Gengheng Zhou Yequn Liu Lianlong He Quangui Guo Hengqiang Ye | 2011 | Carbon2011，，9： | 1 |
| 10 | Electrospun gelatin/chitosan nanofibers containing curcumin for multifunctional food packaging显示文摘Recently,food grade nanofiber-based materials have received growing attentions in food packaging.In this work,novel active and intelligent packaging nanofibers based on gelatin/chitosan with curcumin(GA/CS/CUR)were developed via electrospinning technique.Effects of the incorporation of CUR content(0.1%-0.3%,m/m)on the microstructure and functional properties of the electrospun nanofibers were investigated.Morphological studies using scanning electron microscopy indicated that loading CUR can affect the average diameter of nanofiber mats,which remained around 160-180 nm.The addition of an appropriate level CUR(0.2%,m/m)led to a stronger intermolecular interaction,and thus enhanced the thermal stability and tensile strength of the obtained nanofibers.Meanwhile,the incorporation of CUR significantly improved antioxidant activity and the antimicrobial activity of GA/CS/CUR nanofibers.Moreover,the sensitivity of nanofibers to ammonia results indicated that GA/CS nanofibers containing 0.2%CUR(GA/CS/CURⅡ)presented high sensitivity of colorimetric behavior to ammonia(within 3 min).These results suggest GA/CS/CURⅡnanofibers has great potential as a multifunctional packaging to protect and monitor the freshness of proteinrich animal foods,such as meat and seafood. | Mengxia Duan Jishuai Sun Yequn Huang Haixin Jiang Yaqin Hu Jie Pang Chunhua Wu | 2023 | Food Science and Human Wellness2023，12，2： | 1 |
| 11 | Multiple transformation analysis for interference separation in TDCS显示文摘Various types of interference signals limit the practical application of transform domain communication systems(TDCSs)in the severe electromagnetic field,an orthogonal basis learning method of transformation analysis(OBL-TA)is proposed to effectively address the problem of obtaining an optimal transform domain based on sparse representation.Then,the sparse availability is utilized to obtain the optimal transformation analysis by the iterative methods,which yields the sparse representation for transform domain(SRTD)in unrestricted form.In addition,the iterative version of SRTD(I-SRTD)in unrestricted form is obtained by decomposing the SRTD problem into three sub-problems and each sub-problem is iteratively solved by learning the best orthogonal basis.Furthermore,orthogonal basis learning via cost function minimization process is conducted by stochastic descent,which is assured to converge to a local minimum at least.Finally,the optimal transformation analysis is developed by the effectiveness of different transform domains according to the accuracy of the sparse representation and an optimal transformation analysis separately(OPTAS)is applied to the synthesized signal forms with conic alternatives,dualization,and smoothing.Simulation results demonstrate that the superiorities of the proposed methods achieve the optimal recovery and separation more rapidly and accurately than conventional methods. | WANG Guisheng WANG Yequn DONG Shufu HUANG Guoce | 2022 | Journal of Systems Engineering and Electronics2022，33，5： | 0 |
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