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目的评估基于部分相干干涉测量原理的新型眼生物测量仪Myopia Master用于测量眼轴、角膜曲率的重复性和再现性，比较其与IOL Master 500的一致性。方法同一名操作者随机先后顺序使用新型眼球生物测量仪Myopia Master和IOL Master 500采集屈光不正儿童右眼数据，以评估两仪器间一致性。其中部分儿童接受了Myopia Master重复性、再现性评估。数据包括眼轴（AL）、平坦角膜曲率（Kf）、陡峭角膜曲率（Ks）、平均角膜曲率（Km）、J0、J45。结果136人纳入一致性研究，其中58人纳入重复性和再现性研究。Myopia Master在AL测量中显示出高重复性、再现性（重复性Sw=0.02 mm， ICC=0.999；再现性Sw=0.04 mm， ICC=0.998），在角膜曲率测量显示中等的重复性［Sw范围：（0.04~0.12） D，ICC：（0.861~0.991）］和再现性［Sw范围：（0.06~0.20）D，ICC范围：（0.835~0.992）］。Myopia Master与IOL Master 500测量平均差异为AL（-0.01±0.04）mm、Kf（-0.09±0.15）D、Ks（-0.47±0.40）D、Km（-0.28±0.23）D、 J0（0.18±0.20）D和J45（-0.01±0.12）D。结论在儿童近视筛查中AL和角膜曲率测量中显示出高重复性和再现性，但临床上AL和角膜曲率在Myopia Master和IOL Master 500之间不可互换使用。

中国粮油学会科学技术奖（简称“粮油科技奖”）是我国粮食行业唯一的科技奖励。为促进粮油科技奖持续健康发展，更好地发挥粮油科技奖的激励导向作用，简要回顾梳理了近二十年（2005—2023年）来粮油科技奖概况，总结分析了粮油科技奖的特点和实效，提出了奖励工作面临的挑战与建议。2005—2023年，共受理项目1 055项，获奖项目609项，其中特等奖6项，一等奖96项，二等奖212项，三等奖295项。粮油科技奖励工作具有奖励机制不断完善，注重发挥示范引领作用，扎实推进科技兴粮兴储，提高企业自主创新能力等特点。为了提高新时期粮油科技奖励工作的质量和水平，提出注重成果转化，促进科技与经济深度融合，强化品牌效应，提升奖励价值，以及推动国际化，扩大奖励影响力等建议。The Chinese Cereals and Oil Association Science and Technology Award(referred to as "Cereals and Oils Science and Technology Award") is the only science and technology award in China′s grain industry. In order to promote the sustainable and healthy development of the Cereals and Oils Science and Technology Awards, and better play the incentive and guiding role of the Cereals and Oils Science and Technology Awards, the Cereals and Oils Science and Technology Awards in the past nearly two decades(2005—2023) were briefly reviewed, the characteristics and effectiveness of the Cereals and Oils Science and Technology Awards were summarized and analyzed, and the challenges and suggestions faced by the award work were put forward. From 2005 to 2023, a total of 1 055 projects were accepted and 609 award-winning projects were awarded, including 6 special prizes, 96 first prizes, 212 second prizes and 295 third prizes. The cereals and oils science and technology award work had the characteristics of continuous improvement of the reward mechanism, paying attention to the demonstration and leading role, promotion of science and technology grain storage, and improving the independent innovation ability of enterprises. Some suggestion, such as paying attention to the transformation of achievements to promote the deep integration of science and technology and economy, strengthening the brand effect to enhance the value of reward, promoting internationalization to expand the influence of reward were put forward so as to improve the quality and level of cereals and oils science and technology reward work in the new era.

目的探索一种新的小鼠光学离焦性近视 （LIM） 模型的构建方法，揭示其屈光度与眼生物学参数的变化。方法27只21日龄C57BL／6小鼠分为3组：LIM组、平光镜 （PL） 组和空白对照 （N） 组，比例为5：1：3。以右眼为干预眼，左眼作为自身对照。于实验开始前，干预后第1、2、3和4周，复方托吡卡胺散瞳后检影检测屈光度，光学相干断层扫描在体测量眼轴。各组内，左右眼进行配对t检验。3组间比较，采用Welch's ANOVA，差异有统计学意义时，采用Dunnett's T3法校正P值进行两两比较。结果离焦诱导2周，LIM组内干预眼屈光度比对侧眼向近视漂移约（-2.55±1.54） D（t=6.430， P＜0.000 1）， 伴眼轴较对侧增长约（0.051 ±0.024） mm（t=7.837， P＜0.000 1）；组间比较，LIM组屈光度较PL组或N组近视漂移的均值分别为-2.30 D （P=0.014），-2.55 D （P＜0.000 1），LIM组眼轴较PL组或N组增长的均值分别为0.048 mm （PP＜0.000 1）。随干预时间延长，近视漂移程度增加。结论本研究构建了一种基于搭扣设计的可拆卸式小鼠LIM模型并进行验证，通过2周诱导，屈光度显著向近视漂移，眼轴显著增长。该LIM模型搭建简易，可为近视研究的动物实验的模型构建提供参考。

目的评估睫状肌麻痹下多光谱屈光地形图（MRT） 在儿童视网膜屈光测量的可重复性和一致性。方法纳入8～10岁的学龄儿童，睫状肌麻痹后进行客观验光和眼轴长度测量；由同一检查者采用MRT重复进行两次视网膜屈光测量。视网膜屈光度和相对屈光度用视网膜偏差值（RDV）和相对视网膜偏差值（RRDV）表示。采用秩和检验，组内相关系数（ICC）和95%一致性极限（LoA）比较测量间的重复性和一致性。结果本研究共纳入146名儿童，平均年龄（9.22±0.61）岁。MRT与自动验光仪中央测量重复性ICC=0.94 （95%CI= ［0.92， 0.96］）；周边视网膜偏差值（RDV）从中央到周边各区域重复性良好，最小ICC=0.93 （95%CI= ［0.91， 0.95］），测量差异均无统计学意义（所有P＞0.05）。相对视网膜偏差值（RRDV）在中央30°内可重复性下降，最小ICC=0.37 （95%CI= ［0.12， 0.54］），30°以外可重复性有所提高，最小ICC=0.87 （95%CI= ［0.81， 0.90］）。RRDV所有参数连续两次测量结果差异均没有统计学意义（所有P>0.05）。结论在低度屈光不正的学龄儿童中，采用MRT测量视网膜周边屈光在同一检查者连续两次测量值具有极佳的可重复性，中央屈光与客观电脑验光仪有良好且稳定的一致性。

为了同时精确求解输电塔整体响应和节点局部响应,对输电塔结构进行串并行混合多尺度建模。首先,根据提出的近似影响性判断方法对节点进行分级,并根据影响性级别综合确定节点的串行、并行多尺度模拟方式;其次,在整体刚架模型的基础上,采用子结构法对串行节点建模,并直接对并行节点进行精细化实体建模;再次,通过建立约束方程的方式连接不同尺度的模型;最后,通过对比输电塔刚架模型、多尺度模型的模态分析结果及瞬态分析结果,验证了多尺度模型在整体响应上的有效性,同时也对比了串并行多尺度模型的模拟效果。

目的本研究旨在探讨癌相关成纤维细胞（CAFs）对胃癌细胞迁移与侵袭能力的影响及作用机制。方法采用酶消化法分离培养正常成纤维细胞（NFs）及癌相关成纤维细胞（CAFs）并进行特征指标鉴定。收集两种细胞的条件培养基（NFs-CM、 CAFs-CM），分别作用于胃癌细胞系AGS及MGC803，利用细胞划痕实验检测胃癌细胞迁移能力；Transwell小室迁移及侵袭实验评价胃癌细胞迁移与侵袭能力；光学显微镜观察胃癌细胞形态变化；荧光定量PCR检测胃癌细胞中“上皮-间质”转化（EMT）相关指标的表达变化。结果我们成功分离培养NFs及CAFs；与NFs-CM 组相比，CAFs-CM组胃癌细胞的迁移与侵袭能力均增强（P < 0.05），胃癌细胞形态由扁圆的上皮细胞形态演变为梭形的间质细胞形态，胃癌细胞中上皮细胞标志E-钙粘蛋白（E-cadherin）表达降低，间质细胞标志波形蛋白（Vimentin）和 N-钙粘蛋白（N-cadherin）表达上升（P < 0.05）。结论CAFs可通过调节EMT进程促进胃癌细胞迁移与侵袭。

文章针对基于拉曼散射的分布式光纤测温系统（DTS）实际应用于监测光缆温度过程中可能对测温结果产生影响的几种因素进行了研究,并为如何提高DTS在实际监测光缆温度过程中的精度提供了可行性建议。首先,对裸纤和光缆测温进行了对比实验,实验结果表明,若将裸纤获得的定标参数直接用于现场光缆,会导致在同样的温度下,光缆和裸纤测温结果之间总是存在一定的差值,因此可通过对裸纤定标参数修正或光缆直接定标获得更高测温精度;其次,对架空光缆在实际工况下存在的弧垂和振动对测温精度影响进行了研究,实验结果表明,弧垂和振动对测温精度的影响较小,但相比于振动,弧垂对测温结果的影响更大,即光缆的动态应变比静态应变对测温影响更明显。

35kV交流汇集是目前海上风电场集电系统的通用集电方案。随着对海上风场单位成本降低的追求和技术的发展，海上风机单机容量越来越大。然而，由于35kV海底电缆热极限和通流能力的限制，单机容量的增大使得单根海缆上可连接的风机数目随之减少。随着海上风电场规模的扩大和单机容量的增加，如果仍采用35kV交流集电方案，海底电缆的数目势必增加，电缆投资及相应工程费用和难度也将增大。据此，提出了66kV交流集电方案，并基于一组典型案例，对35kV和66kV海上风电交流集电方案进行了技术经济性比对。进一步结合未来海上风电的发展趋势讨论了66kV海上风电集电方案的适用性。

突发事件是指包含自然灾害、公共卫生事件等在内的造成严重社会危害，需要应急应对的事件。医疗救援队伍是突发事件的主力救援队伍，他们在进行救援任务的同时，由于救援环境不适应，防护物资不足、过度工作等原因，身心都承受着巨大的压力，常出现恐惧、紧张、焦虑、悲观、自责，甚至出现急性应激障碍。若得不到及时有效的心理支持，在事件结束后仍会遗留如创伤后应激障碍等长期的心理问题。全方位的心理支持包括救援全程的心理测量，救援前的队伍组建和详尽的心理支持干预培训，救援期间的自我放松、基本的生活和安全保障、药物治疗、在线心理援助和救援后的撤离应激源、重建生活方式等。

箱式模块建筑是一种工厂化程度很高的预制装配式建筑体系。它具有施工速度快、生产效率高、建造过程环保等优点,符合目前国家提倡的工业化建造政策导向,具有良好的市场前景。然而传统模块建筑通常采用方钢管柱,存在连接不便的问题,为此,提出一种采用槽形截面钢作为模块梁柱的型钢模块建筑体系,可较方便地用高强度螺栓进行模块间的连接。首先,以一栋普通住宅为例,将其改造为采用槽形截面钢作为主体结构构件的箱式模块化钢结构,提出了模块建筑的结构设计与建模方法,通过调整不同布置方案和楼层数,来考察该种模块建筑及其设计方法的适用性。然后,为验证等效设计方案的适用性,分别对梁柱构件进行受力分析对比。最后,针对梁进行等代设计的不足,对箱体拼接后形成的组合梁的等效刚度进行了理论分析和实例验证。

LT（卢比变换）码是第一个能够实际应用的数字喷泉码。尽管采用BP（置信）译码算法的LT码的编译码复杂度已接近线性,但依然会增加较大的时延。文章提出了一种DRE（分解重组编码）算法,对所有信息包分解后重新组合,分成多组并行编码,有效地降低了编码时间和译码的操作数,减少了数据传输时延。该编码方法可适用于不同度分布函数。仿真结果表明,当信息包数量K=1 000和2 000时,采用同样的度分布可以达到NRE（非重复编码）的性能,并能够减少约75%的编码时间和大量的译码操作数。

小尺寸闭口截面柱的螺栓拼接技术国内外研究较少,提出了一种新型的以内套筒作为连接件,以高强度螺栓和对穿螺栓作为紧固件的拼接节点形式。通过轴压破坏试验分析节点的受力特性、承载力和破坏方式,提出节点强度设计建议。结果表明,节点连接安全可靠,但由于存在螺栓滑移,适用于承受静力荷载和间接承受动力荷载的连接中。

随着我国城市化进程的高速推进,多高层工业化住宅已成为建筑工程界的发展热点。对一种新型住宅结构体系——标准化束柱住宅钢结构体系进行了研究,以实现模数化和标准化设计为原则,通过应用该体系对不同建筑方案进行试设计,具体确定了其构件组成。同时,通过技术经济对比分析,考察了标准化束柱住宅钢结构体系应用于多高层住宅的可行性。验证了标准化束柱住宅钢结构体系是一种适应住宅产业化需求、极具推广价值和发展潜力的新型钢结构住宅体系。

利用有限元软件ABAQUS对腹板开孔的轻钢龙骨在均布荷载作用下的抗弯性能进行了分析。将有限元分析结果与有限条分析软件CUFSM的分析结果及试验结果进行对比分析,验证了ABAQUS在分析腹板开孔轻钢龙骨抗弯性能时的可靠性。在此基础上,考虑腹板开孔排数、钢板厚度、腹板高度等参数的影响,研究了轻钢龙骨在均布荷载作用下的抗弯性能及龙骨的破坏模式,并确定影响墙体抗弯性能的主要因素。根据分析结果,建议龙骨腹板通长开孔,以方便实现工业化批量生产。

研究了H形梁和H形柱弱轴单板简支连接的受力性能。为了研究节点连接对于H形柱腹板的影响以及单板在节点受力过程中扭转问题,对H形梁与H形柱腹板的单板简支连接进行了试验研究。提出了节点部位H形柱腹板的抗弯和抗冲剪承载力计算方法;给出了提高节点单板抗扭转能力的构造要求。最后将理论计算、试验和有限元分析结果进行对比,验证了计算方法的准确性。

钢结构梁柱节点有多种形式,国内外学者研究多侧重在H形梁和H形柱的连接上,对于H形梁和矩形钢管柱（RHS柱）的连接研究则很少。由于矩形钢管柱是封闭截面,节点难以采用普通螺栓连接,采用对拉螺栓连接是这种节点的一种构造解决方案。基于理论模型、结合试验和有限元方法对矩形钢管柱与H形梁端板对拉螺栓连接的滞回性能进行研究,探讨该种连接形式的滞回特性。在试验滞回曲线的基础上,提出了节点的恢复力模型,该模型对钢框架的抗震设计具有较好的参考价值。

对于带地下室的高层及超高层结构,如何确定结构的嵌固端位置和考虑地基回填土的侧向约束作用是结构设计人员应关注的重要问题。本文首先提出了带地下室高层结构的力学模型,然后根据经典的弹性理论推导了结构的侧移及内力计算公式,并利用该公式分析了地基回填土约束作用与地下室高度对地下室底板反力M（0）和Q（0）、地下室顶板处位移y（h）以及结构顶点位移y（H）的影响。本文提出的公式以严密理论为基础,其计算结果可靠,可供科研人员和设计人员参考和应用。

实现了前向两波长泵浦及3波长泵浦拉曼光纤放大器（RFA）.实验中所用的信号为符合ITU T建议的C波段20信道波分复用信号,波长为1537.377～1560.605nm,信号传输距离分别为100和75km.其中,3波长泵浦的增益波动

突发竞争是OBS（光突发交换）网络需要解决的关键问题,偏射路由作为一种有效的竞争解决方案而被广泛研究。文章提出了一种基于拥塞避免的提前偏射路由算法,利用周期性反馈的网络拥塞信息按一定概率提前偏射部分突发包。与传统的最短偏射路由算法相比,本算法达到了避免拥塞以及均衡网络负载的目的。仿真结果表明:文章所提算法在突发丢失率、吞吐量以及平均链路利用率方面性能都有所提高。

文章提出了两种利用SOA（半导体光放大器）的XGM（交叉增益调制）和FBG（光纤布拉格光栅）光学生成对称型UWB（超宽带）信号的新方法。分析了该方法的工作原理并进行了仿真实验,分别得到了符合FCC（美国联邦通信委员会）标准的中心频率为5.35 GHz、相对带宽为114%以及中心频率为4.7 GHz、相对带宽为132%的对称型UWB信号,仿真结果验证了该方法的可行性。文章还分析了这两种方法存在的问题。

文章设计了一个基于频率间插复用的DWDM-ROF（密集波分复用-光载无线）系统,使每个信道载波与边带之间的空闲频段得到利用,从而提高了DWDM-ROF系统的频谱利用率。同时,为该系统设计了一种基于FBG（光纤布拉格光栅）的新颖的解复用器。数据传输的仿真实验不仅验证了该方法的可行性,还显示出了该系统具有良好的抗信道串扰能力。

分布拉曼放大器（DRA）的增益轮廓平坦度是衡量放大器性能的一个重要指标。文章通过实验验证了泵浦方式及入射信号功率对增益轮廓的重要影响作用。实验采用20信道符合ITU-T建议的波分复用（WDM）信号,波长从1537.377（信道1）～1560.605nm（信道20）,每一信道用2.5Gbit/s、码长27-1的非归零码通过电吸收调制器（EA）进行外调制。实验结果对分布拉曼放大器的增益轮廓平坦优化具有实际参考价值。

【: 目的】研究低剂量三氯乙烯对人 L-02 肝细胞蛋白质表达谱的影响, 以助于阐明三氯乙烯引起细 胞早期应答反应的分子机制。【方法】L-02 肝细胞暴露于低剂量( 3 μmol/L) 三氯乙烯24 h 后, 提取细胞总蛋 白, 双向电泳分离蛋白质, 软件分析凝胶图像, 基质辅助激光解吸电离飞行时间串联质谱(MALDI-TOF-TOFMS) 对相关异常变化斑点进行鉴定。【结果】和对照组比较, 低剂量三氯乙烯处理后L-02 肝细胞蛋白质表达发 生改变, 初步鉴定出7 个差异蛋白。低剂量三氯乙烯刺激后, 上调的蛋白有核糖体样蛋白( similar to ribosomal protein) 和SET protein, 下调的蛋白有异柠檬酸脱氢酶( isocitrate dehydrogenase, NADP) 和腺苷二磷酸- 核糖基 化因子鸟苷酸因子6 ( ADP-ribosylation factor guanine nucleotide factor 6) , 微管- 肌动蛋白交叉连接因子1 (microtubule-actin crosslinking factor 1) 特异表达, 肽基脯氨酰顺- 反异构酶PPI ( peptidyl prolyl cis/trans isomerase) 缺失。【结论】低剂量的三氯乙烯处理后, L-02 肝细胞中的蛋白表达谱发生明显变化, 这为三氯乙烯 毒作用机制的进一步研究提供了线索。

【目的】探讨nm23 基因m RNA 在乳腺癌组织、乳腺良性肿瘤组织、癌旁组织中的表达及其与临床的关系。【方 法】采用半定量RT-PCR 方法, 检测30 例乳腺癌组织、8 例配对癌旁组织、9 例慢性纤维囊性乳腺病和6 例乳腺纤维腺瘤组织 nm23H1 和nm23H2 mRNA 的表达。【结果】①淋巴结阳性的原发灶组织nm23H1 mRNA 表达明显低于淋巴结阴性的原发灶 组织, Ⅲ 期乳腺癌组织nm23H1 mRNA 水平较Ⅰ 、Ⅱ 期明显低。②多因素分析发现淋巴结转移与nm23H1 mRNA 表达有显著 性相关。③nm23H2 mRNA 与乳腺癌患者肿瘤大小、淋巴结状况、绝经状况、激素受体状况、TNM 分期之间无显著性相关。④ nm23 基因的两个亚型H1 和H2 的m RNA 在4 种不同乳腺组织中均有表达。【结论】nm23H1 基因m RNA 表达强度与淋巴结 转移呈负相关。在乳腺癌转移过程中, nm23H1 m RNA 较nm23H2 m RNA 起更重要的作用。nm23H1 和nm23H2 基因m RNA 在乳腺纤维腺瘤、慢性纤维囊性乳腺病和癌旁组织均有表达。

Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Inorganic Analytical Chemistry / Zhongguo Wuji Fenxi Huaxue is the property of Beijing Research Institute of Mining & Metallurgy Technology Group and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Food Research & Development is the property of Food Research & Development Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The synergistic coupling development of tourism and agriculture is an important channel to promote the implementation of the rural revitalization strategy, which points out the development direction for the development of rural economy. In studying the mutual synergistic development of tourism and agriculture, based on the review of domestic and foreign literature, the coupling model and indicators were used to analyze the agriculture and tourism industries, combined with the actual development of Urumqi City, and the comparison of the coupling degree and coordination was carried out with the cross-section data of Urumqi City for the years of 2016-2022, and categorized and analyzed based on the results of the measurements. The results show that the degree of coupling and coordination of these two industrial subsystems in Urumqi City is still in the primary stage, and the lack of depth in the integration of agriculture and tourism, the single tourism product, and the insufficient capital investment hinder the sustainable development of the local economy and the enhancement of the competitiveness of the tourism industry. To address the problem of agricultural and tourism integration in Urumqi City, it is necessary to improve the diversity and innovativeness of tourism products, enhance the level of agricultural technology and services, and strengthen capital investment and unified management, etc., so as to realize the coordinated development between agriculture and tourism, and to promote the in-depth integration of agricultural and tourism integration. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Materials Engineering / Cailiao Gongcheng is the property of Journal of Materials Engineering Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Bearing is the property of Bearing Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Agrometeorology is the property of Editorial Board of Chinese Journal of Agrometeorology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Food & Fermentation Industries is the property of Food & Fermentation Industries and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

In order to better allocate water resources and maintain sustainable development, we selected Jining City as a specific research area and used the coefficient of variation entropy weight GM (1,1) research method to systematically evaluate the water resource carrying capacity. The results showed that the water resource carrying capacity system in the Jining area exhibited and will exhibit obvious economic ecological characteristics during the two periods of 2016-2021 and 2022-2026. From 2016 to 2021, the ecological environment water consumption rate, agricultural value-added water consumption per 10000 yuan, and industrial value-added water consumption per 10 000 yuan had become strong influencing factors. From 2022 to 2026, the weight of per capita GDP and per capita domestic water consumption would increase, becoming strong influencing factors along with the top three. [ABSTRACT FROM AUTHOR]

Copyright of Journal of Academic Library & Information Science is the property of Anhui University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Chinese Journal of Tissue Engineering Research / Zhongguo Zuzhi Gongcheng Yanjiu is the property of Chinese Journal of Tissue Engineering Research and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Frost-heaving resistance of canals can be designated to evaluate the control parameters in cold regions. As proposed in the national standard of SL23-2006 "Design Code for Frost Heave Resistance of Canal System Engineering", the frostheaving deformation of the canal concrete lining structure can be expected to readily monitor and control in practice. However, the specification cannot provide the specific calculation of uneven frost-heaving deformation in the canal concrete lining. This study aims to facilitate the accurate and practical calculation for the frost-heaving deformation of concrete lining structures under uneven frost-heaving deformation conditions. The fluctuation of groundwater levels was considered across different points along the canal cross-section, together with the continuous deformation within the canal foundation soil. A calculation model was developed for the frost-heaving deformation and internal force of trapezoid concrete lining canal in cold regions under differential frost heave conditions, according to the two-parameter foundation beam of frozen soil. Taking the main trunk canal of Jinghui in Gansu Province as an example, the presented model degenerated into the Winkler model under uniform frost heave conditions. Comparative analysis showed that the traditional Winkler model was regarded as a special case within the proposed model. Some measuring points were simultaneously considered for the shady slope, sunny slope, and bottom of the canal. The Root Mean Square Error (RMSE) between the presented model and observed values was determined to be 0.23, with the Mean Relative Error (MRE) of 4.82%. Taking a trapezoidal concrete lining canal in the Tarim Irrigation area of Xinjiang Uygur Autonomous Region as the prototype, the frost-heaving deformation of the concrete lining structure was calculated at the same time. The results show that the better mechanical performance of the concrete lining canal was achieved in the improved model considering the frozen soil-structure interaction and diffusion of shear force in the frozen soil foundation under uneven frost heave conditions, compared with the material mechanics and traditional Winkler model. The calculated values of the improved model were more consistent with the observation, indicating the rationality and applicability of the model. The engineering example was combined to solve the improved model. The first was the conventional analytical, while the second involved the power series. Among them, the various distributions of free frost heave deformation were expanded into the power series using the comparison coefficient. A special solution with a homogeneous solution was then obtained to introduce the boundary conditions. The general solution was derived for the original control differential equation. The MRE between the frost-heaving deformation was calculated by the power series. Among them, the observed value was 4.31% with an RMSE of 0.17, indicating a reasonable calculation. The power series was utilized to represent the natural frost-heaving displacement of canal foundation soil. Therefore, the improved model effectively enhanced the applicability for the various differential frostheaving modes in foundation-frozen soil. The mechanical response of frost heave was found in the trapezoidal concrete lining canal under differential or uniform frost-heaving deformation. Then, some implication was gained to clarify the influence of transverse groundwater replenishment on the mechanical behavior of concrete lining structures under the frost-heaving deformation of foundation soil. In addition, the improved model can be expected to effectively capture the non-uniform and asymmetric distribution of tangential freezing force at the contact interface, due to the non-equilibrium axial force on both ends of the bottom plate that is caused by the difference between shady and sunny slopes. The finding can provide an effective computational model for the frost heave mechanics of trapezoidal canals in cold regions, especially on differential frost heave conditions. [ABSTRACT FROM AUTHOR]

Copyright of Computer Measurement & Control is the property of Magazine Agency of Computer Measurement & Control and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Nanjing Agricultural University / Nanjuing Nongye Daxue Xuebao is the property of Journal of Nanjing Agricultural University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Nanjing Agricultural University / Nanjuing Nongye Daxue Xuebao is the property of Journal of Nanjing Agricultural University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Nanjing Agricultural University / Nanjuing Nongye Daxue Xuebao is the property of Journal of Nanjing Agricultural University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)