摘要：Bismuth‐based photocatalysts are a class of excellent visible‐light photocatalysts;however,their redox activity is relatively poor and the efficiency of photogenerated carrier separation is low,limiting their development and application in the field of *** address these issues,a series of polyoxometalate PW_(12)O_(40)^(3–)‐doped Bi_(2)O_(3–x)/Bi Schottky photocatalysts PW_(12)@Bi_(2)O_(3–x)/Bi‐n(PBOB‐n,where n is the amount of NaBH4,i.e.,6,12,18,24,and 48 mg)were prepared by a simple electrospinning/calcination/in‐situ NaBH4 reduction *** this composite photocatalyst,the doping of PW_(12) could effectively adjust the electronic structure of Bi_(2)O_(3–x) and improve its redox *** a shallow electron trap,PW_(12) promoted the separation of the photogenerated ***,desirable Schottky junction between the metal Bi nanoparticles and PW_(12)@Bi_(2)O_(3–x) further accelerated the separation of the photogenerated *** synergistic effect of the aforementioned factors endowed PBOB‐n with excellent photocatalytic *** the samples,PBOB‐18 exhibited superior photocatalytic *** visible‐light irradiation,93.7%(20 mg catalyst)of 20 ppm tetrabromobisphenol A(TBBPA,20 mL)was degraded in 60 *** activity was 4.4 times higher than that of Bi_(2)O_(3).PBOB‐18 also exhibited an ultrahigh photocatalytic performance for the removal of *** removal rate(600 ppb)reached 83.3%in 30 min,making it one of the most active Bi‐based ***,the photocatalytic mechanisms of PBOB‐18 for TBBPA and NO have been *** work provides a new direction and reference for the design of low‐cost,efficient,stable,and versatile photocatalysts.

摘要：本研究分析了防水卷材、防水涂料、水泥基防水材料等3种外设防水层防水机理。按照GB 55030—2022《建筑与市政工程防水通用规范》规定,依据“皮肤式”防水理念,从材料性能、防水机理等方面依次分析了明挖法地下结构底板、侧墙、顶板不同外设防水作法的优点和不足,提出了对应推荐方案,以供业内人员讨论、参照。

摘要：The rational design and construction of novel two-dimensional(2D)carbon nitrides(CNs)beyond g-C_(3)N_(4) is a hot topic in the fields of chemistry and *** by the polymerisation of urea,we have prepared a series of novel C-C bridged heptazine CNs UO_(x)(where x is the ratio of urea to oxamide,x=1,1.5,2,2.5,and 3),which are similar to(C_(6)N_(7))n,upon the introduction of *** predicted using density functional theory(DFT)calculations,the conjugated structure of UO_(x) was effectively extended from an individual heptazine to the entire ***,its bandgap was reduced to 2.05 eV,and its absorption band edge was significantly extended to 600 ***,its carrier transfer and separation were significantly enhanced,establishing its superior photocatalytic *** optimised UO_(2) exhibits a superior photocatalytic hydrogen production rate about 108.59 lmol h^(-1)(using 10 mg of catalyst)with an apparent quantum efficiency(AQE)of 36.12%and 0.33%at 420 and 600 nm,respectively,which is one of the most active novel CNs reported to ***,UO_(2) exhibits excellent photocatalytic activity toward the oxidation of diphenylhydrazine to azobenzene with conversion and selectivity reaching~100%,which represents a promising highly efficient 2D CN *** phenols degradation,UO_(2) also displayed significantly higher activity and durability during the degradation of phenol when compared to traditional g-C_(3)N_(4),highlighting its significant potential for application in energy,environment and photocatalytic organic reactions.

摘要：基于midas Gen软件模型,在不同应力比下对实体工程金属网壳模型进行分析,获得了工程实体金属网壳模型静力荷载下铸钢铰支座反力、罕遇地震时铸钢铰支座反力、静力荷载销轴反力、罕遇地震销轴反力分布情况。将设计模型得到的实体工程金属网壳荷载–位移曲线与有关设计模型网壳荷载–位移曲线进行对比,通过实体工程金属网壳模型设计实例,分析了不同应力下的杆件位移情况,从而证明了实体工程金属网壳模型设计的准确性及合理性。

摘要：试验旨在探讨中草药制剂对肉鸽生长性能、血清生化指标及免疫性能的影响。采用单因素试验设计,选择28日龄的健康肉鸽240只,随机分为4组,每组5个重复,每个重复12只肉鸽。CK组饲喂基础饲粮,A组、B组和C组分别在基础饲粮中添加0.010、0.025、0.050 g/kg中草药制剂。预试期7 d,正式试验期30 d。结果显示,B组肉鸽的末重显著高于CK组(P<0.05)。56日龄时,B组肉鸽血清中白蛋白(ALB)含量极显著高于A组(P<0.01),显著高于CK组(P<0.05);B组、C组血清总胆固醇(TC)含量显著高于A组(P<0.05);65日龄时,B组血清总蛋白(TP)含量显著高于CK组(P<0.05),显著高于A组(P<0.05);B组血清ALB含量极显著高于CK组(P<0.01),显著高于A组(P<0.05)。42日龄时,B组血清免疫球蛋白G(IgG)和C组免疫球蛋白M(IgM)含量均显著高于CK组(P<0.05);B组、C组血清补体C3、干扰素-γ (IFN-γ)含量显著高于CK组(P<0.05);65日龄时,B组血清免疫球蛋白A (IgA)、IgM、IgG、白细胞介素-2 (IL-2)含量显著高于CK组(P<0.05);B组血清补体C3、补体C4、IFN-γ、白细胞介素-4 (IL-4)、白细胞介素-6 (IL-6)含量极显著高于CK组(P<0.01)。研究表明,添加中草药制剂能有效改善肉鸽的生长性能和血清生化指标,促进免疫器官发育,增强免疫能力,以0.025 g/kg添加量效果较好。

摘要：Collision and security issues are considered as barriers to RFID *** this paper,a parallelizable anti-collision based on chaotic sequence combined dynamic frame slotted aloha to build a high-efficiency RFID system is *** the tags parallelizable identification,we design a Discrete Markov process to analyze the success identification *** a mutual authentication security protocol merging chaotic anti-collision is *** theoretical analysis and simulation results show that the proposed identification scheme has less than 45.1%of the identification time slots compared with the OVSF-system when the length of the chaos sequence is *** success identification rate of the proposed chaotic anti-collision can achieve 63%when the number of the tag *** test the energy consumption of the presented authentication protocol,which can simultaneously solve the anti-collision and security of the UHF RFID system.

摘要：《春满上塘》是一部富有前瞻性的反映农村现实生活的优秀剧作,其特点体现在三个方面:一是小剧本蕴藏的大内涵。在轻喜剧的背后,蕴含多层面的丰富的社会内容,间接回答了“时代之问”,以小见大,艺术地、圆满地、妥帖地回答了困扰人们许久的农村振兴方面的重大问题。二是小冲突背后的大张力。剧作在情感线、事业线、思想线方面设置戏剧冲突。情节的推进,既符合生活逻辑,满带着人间烟火气,又与时代精神相呼应,安排颇为巧妙。三是小剧种展现的大作为。艺人、编剧、作曲、舞美、灯光等,通力合作,倾力打造,推出了一出经得起观众检验的戏曲精品。

摘要：文物是不可再生的宝贵遗产,艺术品是不可多得的文化财富,对文物和艺术品进行分析时应尽可能避免对其造成损伤。光导纤维反射光谱法作为一种无损、快速的分析检测方法,具有无损检测、直接测量和远程分析的特点,在文物和艺术品研究中具有独特的优势。介绍了光导纤维反射光谱法在颜料及染料鉴定、胶结材料分析以及研究保护效果和保存条件方面的应用,探讨了光导纤维反射光谱方法的检出限、重现性和信号表征方法,并展望了光导纤维反射光谱法在文物和艺术品研究中的发展趋势。

摘要：让地方戏“活起来,传下去”,激发人们的文化自信,守住“精神家园”,文化主管部门重任在肩。应多多关注网络等环境变量,使地方戏的传播力得到多维提升。地方戏院团是地方戏振兴最主要的抓手,应针对存在的问题,深入思考破局之策,增强责任担当、坚定进取信念、拓宽发展路径、深拓文化市场,兼顾“雅”与“俗”、“大”与“小”、“演”与“创”、“出戏”与“出人”、“新点子”与“老玩意”,用匠心进行艺术传承、用初心进行艺术磨砺、用真心进行艺术改革,以最直接的努力迎接地方戏的下一个春天。地方性是地方戏的本质属性,厚重的地方文化乃是其赖以成长的肥沃土壤。唯有苦练内功,走进生活,拥抱大众,扎根基层,地方戏才会有源头活水,地方戏的振兴才有真正的希望。

摘要：随着社会的发展和人们认知水平的提高,早期人类对自然灾害的规避逐渐积累了一些经验,但对生与死的未知仍充满恐惧和假想。方士的出现,就顺应了这一思维。而他们求仙问道的社会活动,启迪着艺人努力拓宽伎艺发展的思维空间。他们为达到某种目的所采取的种种技巧,对艺术创造心理也产生积极的影响,在某些层面上助推了表演伎艺的生成与发展。汉武帝之时方士频出,其智术也得到全面提升,善于聚零为整,且更加注重个人包装和表演技术的含量,进而带给人们见多识广、无所不能的假象,诱使世人崇拜,以致转为模仿其行为。方士带有神秘色彩的伎艺表演,极具艺术真实性和现实欺骗性,本身就有较强的戏剧属性。由方术逐渐演化为伎艺表演,是自然而然之事。至东海黄公故事,既有了时间长度,又具备了空间维度,已大致具备了戏剧的雏形。而"拨头",结合文献资料和出土文物来考察,无疑乃是由"东海黄公"演化而来。