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Nano-Micro Letters 2020年第9期12卷 136-146页

作者： Aniruddha BPatil Zhaohui Meng Ronghui Wu Liyun Ma zijie xu Chenyang Shi Wu Qiu Qiang Liu Yifan Zhang Youhui Lin Naibo Lin Xiang Yang Liu Research Institute for Soft Matter and Biomimetics Fujian Provincial Key Laboratory for Soft Functional Materials ResearchDepartment of PhysicsCollege of MaterialsXiamen UniversityXiamen 361005People’s Republic of China Department of Chemistry M.D.CollegeParelMumbai 400012India Department of Physics National University of Singapore2 Science Drive 3Singapore 117542Singapore

Flexible biosensors with high accuracy and reliable operation in detecting pH and uric acid levels in body fluids are fabricated using well-engineered metaldoped porous carbon as electrode material.The gold nanoparticles@N-doped carbon in situ are prepared using wool keratin as both a novel carbon precursor and a stabilizer.The conducting electrode material is fabricated at 500℃ under customized parameters,which mimics A-B type(two different repeating units) polymeric material and displays excellent deprotonation performance(pH sensitivity).The obtained pH sensor exhibits high pH sensitivity of 57 mV/pH unit and insignificant relative standard deviation of 0.088%.Conversely,the composite carbon material with sp^2 structure prepared at 700℃ is doped with nitrogen and gold nanoparticles,which exhibits good conductivity and electrocatalytic activity for uric acid oxidation.The uric acid sensor has linear response over a range of 1-150 μM and a limit of detection 0.1 μM.These results will provide new avenues where biological material will be the best start,which can be useful to target contradictory applications through molecular engineering at mesoscale.

关键词： Wool keratin Structure engineering Metal nanoparticle carbon composite Health monitoring Flexible biosensor

基于蓝光TADF材料的敏化白光OLED特性

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发光学报 2024年第6期45卷 1005-1014页

作者：徐子杰王文军李淑红刘云龙聊城大学物理科学与信息工程学院山东聊城252059 聊城大学山东省光通信科学与技术重点实验室山东聊城252059

白光有机发光二极管(WOLEDs)由于面光源、可柔性、轻薄、自发光等优势而广泛应用于显示和照明领域。目前,高效溶液处理的混合白光有机发光二极管很少被报道。本文选择蓝色热致延迟荧光材料DMAC-DPS作为传统橙色磷光材料PO-01-TB的敏化主... 详细信息

白光有机发光二极管(WOLEDs)由于面光源、可柔性、轻薄、自发光等优势而广泛应用于显示和照明领域。目前,高效溶液处理的混合白光有机发光二极管很少被报道。本文选择蓝色热致延迟荧光材料DMAC-DPS作为传统橙色磷光材料PO-01-TB的敏化主体,制备了热活化敏化的杂化单发光层有机发光二极管白光器件,分析了器件能量传递机制。通过主客体掺杂浓度调控,实现了外部量子效率最高为8.00%、电流效率为22.32 cd/A、对应CIE坐标(0.405,0.497)及色温为4059 K的暖白光OLED器件,增加空穴阻挡层DPEPO有效地提高了器件的光谱稳定性,实现了更小的ΔCIE(0.017,0.016)。

关键词：白光有机发光二极管热致延迟荧光材料溶液处理能量转移

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价值认知与实践决策——工业建筑遗产更新中当代建筑师的话语思考

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建筑遗产 2024年第1期 8-16页

作者：赵子杰徐苏斌田甜 [日]青木信夫天津大学建筑学院天津300072 天津大学中国文化遗产保护国际研究中心太原理工大学建筑学院

遗产的价值认知与保护是一个多维度的议题,受到不同认知主体背景差异的影响,可能引发争议,进而影响保护决策的制定。作为工业建筑遗产更新实践的直接策划者与执行者,建筑师的价值认知与实践决策会直接影响实践效果。文章旨在从建筑师的... 详细信息

遗产的价值认知与保护是一个多维度的议题,受到不同认知主体背景差异的影响,可能引发争议,进而影响保护决策的制定。作为工业建筑遗产更新实践的直接策划者与执行者,建筑师的价值认知与实践决策会直接影响实践效果。文章旨在从建筑师的价值认知视角出发,记录这一群体对价值认知与保护决策的思考,以探究建筑师群体对于遗产保护与再利用的当代思考。文章发现,建筑师群体普遍认为工业建筑遗产要走入当代生活,并对工业建筑遗产及其环境的保护利用和干预持正面态度。

关键词：工业建筑遗产更新建筑师价值认知

Resource allocation for sum-rate maximization in NOMA-based generalized spatial modulation

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Digital Communications and Networks 2022年第6期8卷 1077-1084页

作者： Guoquan Li zijie Hong Yu Pang Yongjun xu Zhengwen Huang School of Communication and Information Engineering Chongqing University of Posts and TelecommunicationsChongqing400065China Chongqing Key Laboratory of Photoelectronic Information Sensing and Transmitting Technology Chongqing400065China Department of Electronic and Electrical Engineering Brunel University LondonLondonUB8-3PHUK

The Multiple-Input Multiple-Output(MIMO)Non-Orthogonal Multiple Access(NOMA)based on Spatial Modulation(SM-MIMO-NOMA)system has been proposed to achieve better spectral efficiency with reduced radio frequency chains comparing to the traditional MIMO-NOMA system.To improve the performance of SM-MIMO-NOMA systems,we extend them to generalized spatial modulation scenarios while maintaining moderate complexity and fairness.In this paper,system spectral efficiency and transmission quality improvements are proposed by investigating a sum-rate maximization resource allocation problem that is subject to the total transmitted power,user grouping,and resource block constraints.To solve this non-convex and difficult problem,a graph-based user grouping strategy is proposed initially to maximize the mutual gains of intragroup users.An auxiliary-variable approach is then adopted to transform the power allocation subproblem into a convex one.Simulation results demonstrate that the proposed algorithm has better performance in terms of bit error rate and sum rates.

关键词： Resource allocati on NOMA Spatial modulati on Power allocation User grouping

Diets enriched with finely ground wheat bran alter digesta passage rate and composition of the gut microbiome in sows

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Animal Nutrition 2023年第1期12卷 32-41页

作者： zijie Wang Wenhui Wang Song xu Jian Ding Xiangfang Zeng Hu Liu Fenglai Wang State Key Lab of Animal Nutrition College of Animal Science&TechnologyChina Agricultural UniversityBeijing 100193China National Animal Husbandry Service Ministry of Agriculture and Rural Affairs of the People's Republic of ChinaBeijing 100000China

We investigated the effects of finely ground wheat bran on the nutrient digestibility, digesta passage rate,and gut microbiota structure in sows. A 3 × 3 Latin square design with 3 test periods and 3 experimental diets was used. Six non-pregnant sows(parity: 5 to 7) were randomly assigned to 3 experimental diets with 2 replicates per treatment in each period. Each period lasted 19 d(12 d for adaptation and 7 d for experiment). The experimental diets included(a) a basal corn and soybean meal diet(CON),(b) a basal diet with 20% coarse wheat bran(CWB;particle size: 605 μm), and(c) a basal diet with 20% fine wheat bran(FWB;particle size: 438 μm). The results demonstrated that the apparent total tract digestibility of neutral detergent fiber, acid detergent fiber and energy were reduced(P < 0.05) in the FWB and CWB groups compared with those in the CON group. Viscosity of digesta increased(P < 0.001) in FWB-fed sows. The passage rate of digesta from the mouth to the ileum decreased(P < 0.001) in FWB-fed sows. Peptide YY(PYY) concentration increased(P = 0.01) in FWB-fed sows after 30 min of feeding.In the FWB group, the relative abundance of Lactobacillaceae at the family level increased(P < 0.05) in the ileal digesta. At the class level, the relative abundance of Clostridia in feces decreased(P < 0.05) in FWB-fed sows. FWB enhanced the concentration of butyrate in feces compared with CON and CWB(P = 0.04). These results suggest that dietary supplementation with finely ground wheat bran reduces the passage rate of digesta, increases the abundance of beneficial microorganisms, and elevates the concentration of short-chain fatty acids and PYY in sows. These findings indicate that the addition of finelyground wheat bran to the diets of sows is more effective than using coarse wheat bran for improving their satiety and intestinal microbial composition.

关键词： Finely ground wheat bran Digestive physiology Digesta passage rate Gut microbiota Sow

Wheat bran inclusion level impacts its net energy by shaping gut microbiota and regulating heat production in gestating sows

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Animal Nutrition 2023年第4期15卷 45-57页

作者： Song xu Zirou Yu Zongliang Li zijie Wang Chenyu Shi Jian Li Fenglai Wang Hu Liu State Key Lab of Animal Nutrition China Agricultural UniversityNo.2 Yuanmingyuan West RoadBeijing100193China

An accurate estimation of net energy(NE)of wheat bran is essential for precision feeding of sows.However,the effects of inclusion level on NE of wheat bran have not been reported.Inclusion level was hypothesized to impact NE of wheat bran by regulating gut microbiota and partitioning of heat production.Therefore,twelve multiparous sows(Yorkshire×Landrace;2 to 4 parity)were assigned to a replicated 3×6 Youden square with 3 successive periods and 6 diets in each square.The experiment included a corn-soybean meal diet(WB0)and five diets including 9.8%(WB10),19.5%(WB20),29.2%(WB30),39.0%(WB40)and 48.7%wheat bran(WB50),respectively.Each period included 6 d of adaptation to diets followed by 6 d for heat production measurement using open-circuit respiration chambers.Compared with other groups,WB30,WB40,and WB50 enriched different fiber-degrading bacteria genera(P<0.05).Apparent total tract digestibility of neutral detergent fiber and acid detergent fiber of wheat bran were greater in WB30 and WB40(P<0.05).Physical activity(standing and sitting)decreased as inclusion level increased(P=0.04),which tended to decrease related heat production(P=0.07).Thermic effect of feeding(TEF)was higher in WB50 than other treatments(P<0.01).Metabolizable energy of wheat bran was similar among treatment groups(except for WB10).NE of wheat bran conformed to a quadratic regression equation with inclusion level(R^(2)=0.99,P<0.01)and peaked at an inclusion level of 35.3%.In conclusion,increasing inclusion level decreased energy expenditure of sows on physical activity and promoted growth of fiber-degrading bacteria,which improved energy utilization of fiber.Fermentation of wheat bran fiber by Prevotellaceae_UCG-003 and norank_f_Paludibacteraceae might increase TEF.Consequently,sows utilized energy in wheat bran most efficiently at an inclusion level of 35.3%.

关键词： Gestating sow Gut microbiota Heat production Inclusion level Net energy Wheat bran

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B样条函数法的任意荷载近似计算方法

贵州大学学报（自然科学版） 2024年第2期41卷 26-33页

作者：张友华袁波徐子杰郑世宇贵州大学空间结构研究中心贵州贵阳550025 贵州大学贵州省结构工程重点实验室贵州贵阳550025

为优化B样条函数法数值计算流程,提升解决复杂荷载问题的能力。本文基于B样条函数法,通过与相关文献数值算例结果进行比较分析,研究任意荷载的新型计算方法。论文以解圆柱壳结构模型为数值算例,基于文中提出的计算方法,构建出三组不同... 详细信息

为优化B样条函数法数值计算流程,提升解决复杂荷载问题的能力。本文基于B样条函数法,通过与相关文献数值算例结果进行比较分析,研究任意荷载的新型计算方法。论文以解圆柱壳结构模型为数值算例,基于文中提出的计算方法,构建出三组不同的单方向荷载逼近函数,分别求解得到特殊点的位移、弯矩、轴力,以及位移和内力沿坐标轴方向的分布,与精确解(扁壳解法)进行比较研究,分析近似计算方法的精确性与实用性。结果显示,在特殊点处二次插值方法的相对误差均低于1.5%,三次、四次插值方法的相对误差均低于0.6%,沿坐标轴方向的分布与精确解均一致,表明本方法具有精度高、处理复杂荷载简便、易于程序编写、构造函数灵活等特点。本方法用逼近函数替代原函数便于数值积分的想法,为未来B样条函数法处理复杂荷载提供新思路。

关键词： B样条近似计算任意荷载 Lagrange插值法

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Luts法制备鹅骨髓源树突状细胞及其初步鉴定

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中国家禽 2024年第4期46卷 54-59页

作者：李睿婷祝博森郭子杰朱婷钟睿洪伟鸣徐海李玲江苏农牧科技职业学院江苏泰州225300

为制备鹅骨髓源树突状细胞(Dendritic cells,DCs),试验采用改良的Luts方法经粒细胞-巨噬细胞集落刺激因子(GM-CSF)和白细胞介素-4(IL-4)协同诱导骨髓单个核细胞分化成为DCs,通过形态观察、表面标志鉴定以及特征性生物功能分析初步鉴定... 详细信息

为制备鹅骨髓源树突状细胞(Dendritic cells,DCs),试验采用改良的Luts方法经粒细胞-巨噬细胞集落刺激因子(GM-CSF)和白细胞介素-4(IL-4)协同诱导骨髓单个核细胞分化成为DCs,通过形态观察、表面标志鉴定以及特征性生物功能分析初步鉴定培养获得的DCs。结果显示,培养至第10天细胞表面刺突、伪足明显,细胞集落生长,呈现典型树突状细胞形态;RT-qPCR检测到DCs成熟后表面标志物CD40、CD80和CD86转录水平的上调;培养至第8~10天细胞吞噬能力逐步达到峰值,至第12天细胞培养上清中IL-2和IFN-γ含量分别为(92.39±5.13)pg/mL和(1345.68±76.84)pg/mL;制备的DCs作为刺激细胞与淋巴细胞以1∶5混合培养时能显著刺激淋巴细胞增殖(P<0.05)。研究表明在体外成功诱导培养出鹅骨髓源DCs,制备的细胞表现出体内DCs所具备的部分生物学特性。

关键词： Luts法鹅树突状细胞体外培养鉴定

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鸭骨髓源树突状细胞的诱导培养及功能分析

畜牧与兽医 2024年第4期56卷 61-65页

作者：李玲祝博森朱婷钟睿郭子杰李睿婷洪伟鸣徐海江苏农牧科技职业学院江苏泰州225300

旨在建立鸭骨髓源树突状细胞(DC)体外诱导培养方法,分析DC基本生物学功能。在无菌条件下分离鸭骨髓单核细胞,优化粒细胞-巨噬细胞集落刺激因子(GM-CSF)和白细胞介素4(IL-4)工作浓度,在体外进行诱导培养,然后通过形态学观察、吞噬活性检... 详细信息

旨在建立鸭骨髓源树突状细胞(DC)体外诱导培养方法,分析DC基本生物学功能。在无菌条件下分离鸭骨髓单核细胞,优化粒细胞-巨噬细胞集落刺激因子(GM-CSF)和白细胞介素4(IL-4)工作浓度,在体外进行诱导培养,然后通过形态学观察、吞噬活性检测、表面标志物流式鉴定、分泌细胞因子和刺激淋巴细胞增殖能力的测定,对制备的DC进行形态和生物功能评价。结果:添加20 ng/mL的IL-4和40 ng/mL的GM-CSF可以诱导出高吞噬活性的DC,诱导培养后3 d可见菱形、有纤突的细胞;经脂多糖(LPS)刺激成熟的DC,呈现典型的树突状结构,细胞表面CD11c、CD80和MHCⅡ分子表达量分别为80.08%、81.27%和91.47%;DC培养体系中白细胞介素2(IL-2)、γ干扰素(IFN-γ)分泌量随着培养时间延长而增加,并在成熟后分泌量显著升高(P<0.05);CCK-8法检测结果显示成熟后的DC以1∶5比例与淋巴细胞混合培养,能够显著刺激淋巴细胞增殖。本试验成功建立鸭骨髓源DC体外诱导培养方法,制备细胞具备了树突状细胞的基本生物学功能。

关键词：鸭树突状细胞体外培养功能分析

Spatial modulation of nanopattern dimensions by combining interference lithography and grayscale-patterned secondary exposure

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Light(Science & Applications) 2022年第5期11卷 832-841页

作者： Zhuofei Gan Hongtao Feng Liyang Chen Siyi Min Chuwei Liang Menghong xu zijie Jiang Zhao Sun Chuying Sun Dehu Cui Wen-Di Li Department of Mechanical Engineering University of Hong KongHong KongChina School of Microelectronics Southern University of Science and TechnologyShenzhenChina

Functional nanostructures are exploited for a variety of cutting-edge fields including plasmonics,metasurfaces,and biosensors,just to name a few.Some applications require nanostructures with uniform feature sizes while others rely on spatially varying morphologies.However,fine manipulation of the feature size over a large area remains a substantial challenge because mainstream approaches to precise nanopatterning are based on low-throughput pixel-by-pixel processing,such as those utilizing focused beams of photons,electrons,or ions.In this work,we provide a solution toward wafer-scale,arbitrary modulation of feature size distribution by introducing a lithographic portfolio combining interference lithography(IL)and grayscale-patterned secondary exposure(SE).Employed after the high-throughput IL,a SE with patterned intensity distribution spatially modulates the dimensions of photoresist nanostructures.Based on this approach,we successfully fabricated 4-inch wafer-scale nanogratings with uniform linewidths of<5%variation,using grayscale-patterned SE to compensate for the linewidth difference caused by the Gaussian distribution of the laser beams in the IL.Besides,we also demonstrated a wafer-scale structural color painting by spatially modulating the filling ratio to achieve gradient grayscale color using SE.

关键词： lithography dimensions spatially