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共享内存结构OpenMP并行程序的自动生成

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计算机科学 2004年第12期31卷 189-191页

作者：张平赵荣彩李清宝董春丽解放军信息工程大学信息工程学院郑州450002

有效的程序自动并行化系统能帮助用户充分利用并行计算机的硬件资源和提高并行程序设计的效率。OpenMP作为共享内存结构的编程标准,具有良好的性能和可移植性。本文介绍了基于SUIF的OpenMP并行程序自动生成工具OAGT的设计和实现,重点讨... 详细信息

有效的程序自动并行化系统能帮助用户充分利用并行计算机的硬件资源和提高并行程序设计的效率。OpenMP作为共享内存结构的编程标准,具有良好的性能和可移植性。本文介绍了基于SUIF的OpenMP并行程序自动生成工具OAGT的设计和实现,重点讨论了其中所涉及的几个主要技术问题:循环分析、流水并行、归约操作、同步优化等。

关键词：并行程序设计共享内存自动生成流水并行并行计算机可移植性编程 MP 问题操作

Transforming waste particles into valuable adsorbents via amyloid-mediated molecular engineering

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Science China Chemistry 2025年第01期 317-328页

作者： Qingmin Yang Jian zhao Yujia zhang Xingyu Zhou Hao Ren Bowen Hu Zhongli Lei Lixin Chen Peng Yang School of Material and Chemical Engineering Bengbu University Anhui Provincial Engineering Laboratory of Silicon-Based Materials School of Chemistry and Chemical Engineering Northwestern Polytechnical University Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical EngineeringShaanxi Normal University Xi'an Key Laboratory of Polymeric Soft Matter School of Chemistry and Chemical Engineering Shaanxi Normal University International Joint Research Center on Functional Fiber and Soft Smart Textile School of Chemistry and Chemical EngineeringShaanxi Normal University

The high-value utilization of industrial solid waste using a facile and eco-friendly process is of great interest and significance in reducing environmental pollution and developing a green circular economy. Herein, we propose an amyloid-mediated molecular engineering strategy to transform particulate waste into valuable adsorbents for metal ions. Our method has the advantage of aqueous solution fabrication under mild conditions without the use of high-temperature hydrothermal methods and toxic chemical reagents. Amyloid-mediated molecular engineering manipulates the phase transition of bovine serum albumin(BSA)on particulate waste surfaces, resulting in a remarkable ～3.1 times improvement in the adsorption capacity of fly ash, a typical industrial solid waste for gold ions after modification with the phase-transitioned BSA(PTB). The resultant adsorption ability was 69–1,980 times higher than those of conventional and emerging adsorbent materials such as ion exchange resins, activated carbon(AC), covalent organic frameworks(COFs), and metal-organic frameworks(MOFs). We further demonstrated the application of our PTB-modified materials in the recovery of precious metals from low-grade gold ore and electronic waste leachates. Consequently, this strategy could increase the value of waste materials nearly 27 times. In addition, this method is generally extendable to other conventional industrial adsorbents such as resin, clay, and Al2O3, and enhances their adsorption capabilities at least twofold. Overall, this work provides a simple and green approach for improving the adsorption performance of solid particles, and is expected to develop into a universal strategy for transforming waste particles into high-value-added products.

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氮磷钾肥对茎瘤芥产量和硝酸盐的影响

西南农业学报 2009年第3期22卷 712-715页

作者：张召荣李昌满刘义华范永红赵守忠肖莉重庆市涪陵区农业科学研究所重庆涪陵408000 长江师范学院生命科学系重庆涪陵408000

采用田间试验和化验分析的方法,研究了不同氮、磷、钾施用水平下,茎瘤芥各器官产量和硝酸盐含量变化特征。结果表明,瘤茎产量与氮、磷、钾施用量均呈极显著二次回归关系;瘤茎硝酸盐含量与施氮量呈极显著正相关,施磷量(P2O5)在55.8 kg/hm... 详细信息

采用田间试验和化验分析的方法,研究了不同氮、磷、钾施用水平下,茎瘤芥各器官产量和硝酸盐含量变化特征。结果表明,瘤茎产量与氮、磷、钾施用量均呈极显著二次回归关系;瘤茎硝酸盐含量与施氮量呈极显著正相关,施磷量(P2O5)在55.8 kg/hm2、施钾量(K2O)在133.5 kg/hm2范围内,增施磷、钾肥可提高瘤茎产量而降低硝酸盐含量。茎瘤芥无公害生产上,应控制氮、磷用量,适当增施钾肥。

关键词：茎瘤芥氮磷钾产量硝酸盐

茎瘤芥(榨菜)数量性状的相关遗传力与选择指数分析

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中国蔬菜 2009年第16期 36-40页

作者：刘义华张召荣冷蓉周光凡范永红肖丽李娟重庆市涪陵农业科学研究所重庆408000

以23份茎瘤芥代表性品种资源为试材,利用相关遗传力研究了茎瘤芥数量性状的相关遗传关系,并计算分析瘤茎产量和与产量关系较密切的田间易选性状所组合的各种选择指数。结果表明:各性状与瘤茎产量的相关遗传力均低于瘤茎产量的遗传力,进... 详细信息

以23份茎瘤芥代表性品种资源为试材,利用相关遗传力研究了茎瘤芥数量性状的相关遗传关系,并计算分析瘤茎产量和与产量关系较密切的田间易选性状所组合的各种选择指数。结果表明:各性状与瘤茎产量的相关遗传力均低于瘤茎产量的遗传力,进一步分析表明茎瘤芥育种进行综合间接选择效果并不十分理想,但在营养生长期作间接选择的效率与对瘤茎产量作直接选择的效率相当,育种时加强营养生长期的选择并辅助考虑瘤茎横径或茎/叶,既可做到不破坏中选种株又能基本实现茎瘤芥丰产、优质和生态适应性较强的同步改良。

关键词：茎瘤芥数量性状相关遗传力选择指数

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茎瘤芥(榨菜)生育期的基因效应分析

西南农业学报 2009年第2期22卷 433-436页

作者：刘义华冷蓉张召荣周光凡范永红肖丽李娟重庆市涪陵农业科学研究所重庆涪陵408000

以6个茎瘤芥杂交组合的P1、P2、F1、F2、B1、B2世代为试材,采用世代平均数分析的多元回归法,对茎瘤芥生育期的基因效应进行了分析。结果表明:杂种F1代生育期基本没有超亲现象,双亲生育期的表现制约着F1代的表现;遗传以加性效应占绝对优... 详细信息

以6个茎瘤芥杂交组合的P1、P2、F1、F2、B1、B2世代为试材,采用世代平均数分析的多元回归法,对茎瘤芥生育期的基因效应进行了分析。结果表明:杂种F1代生育期基本没有超亲现象,双亲生育期的表现制约着F1代的表现;遗传以加性效应占绝对优势;显性效应在某些组合显著存在,并显得重要;上位性效应较为普遍,其主要是加性与加性的互作;加性类效应明显大于非加性类效应;生育期的遗传改良宜累加选择。

关键词：茎瘤芥生育期基因效应

IDSSCNN-XgBoost:Improved Dual-Stream Shallow Convolutional Neural Network Based on Extreme Gradient Boosting Algorithm for Micro Expression Recognition

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Computers, Materials & Continua 2025年第1期82卷 729-749页

作者： Adnan Ahmad zhao Li Irfan Tariq Zhengran He School of Information Science and Engineering Southeast UniversityNanjing210016China

Micro-expressions(ME)recognition is a complex task that requires advanced techniques to extract informative features fromfacial *** deep neural networks(DNNs)with convolutional structures have been ***,unlike DNNs,shallow convolutional neural networks often outperform deeper models in mitigating overfitting,particularly with small ***,many of these methods rely on a single feature for recognition,resulting in an insufficient ability to extract highly effective *** address this limitation,in this paper,an Improved Dual-stream Shallow Convolutional Neural Network based on an Extreme Gradient Boosting Algorithm(IDSSCNN-XgBoost)is introduced for ME *** proposed method utilizes a dual-stream architecture where motion vectors(temporal features)are extracted using Optical Flow TV-L1 and amplify subtle changes(spatial features)via EulerianVideoMagnification(EVM).These features are processed by IDSSCNN,with an attention mechanism applied to refine the extracted effective *** outputs are then fused,concatenated,and classified using the XgBoost *** comprehensive approach significantly improves recognition accuracy by leveraging the strengths of both temporal and spatial information,supported by the robust classification power of *** proposed method is evaluated on three publicly available ME databases named Chinese Academy of Sciences Micro-expression Database(CASMEII),Spontaneous Micro-Expression Database(SMICHS),and Spontaneous Actions and Micro-Movements(SAMM).Experimental results indicate that the proposed model can achieve outstanding results compared to recent *** accuracy results are 79.01%,69.22%,and 68.99%on CASMEII,SMIC-HS,and SAMM,and the F1-score are 75.47%,68.91%,and 63.84%,*** proposed method has the advantage of operational efficiency and less computational time.

关键词： ME recognition dual stream shallow convolutional neural network euler video magnification TV-L1 XgBoost

沙丁胺醇联合无创呼吸机对慢性阻塞性肺病合并呼吸衰竭患者TNF-α、IL-6、IL-8及血清CK-MB活性影响研究

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中国生化药物杂志 2015年第12期35卷 136-138页

作者：林贻照王芳张荣照魏松青福建中医药大学附属康复医院呼吸科福建福州350003 福建省康复技术重点实验室福建福州350003

目的探讨沙丁胺醇联合无创呼吸机对慢性阻塞性肺病合并呼吸衰竭患者TNF-α、IL-6、IL-8及血清CK-MB活性的影响。方法收集慢性阻塞性肺病合并呼吸衰竭患者60例,随机分为对照组和实验组,每组各30例,对照组患者给予无创呼吸机治疗,实验组... 详细信息

目的探讨沙丁胺醇联合无创呼吸机对慢性阻塞性肺病合并呼吸衰竭患者TNF-α、IL-6、IL-8及血清CK-MB活性的影响。方法收集慢性阻塞性肺病合并呼吸衰竭患者60例,随机分为对照组和实验组,每组各30例,对照组患者给予无创呼吸机治疗,实验组在对照组基础上给予沙丁胺醇治疗,治疗结束后,对所有患者的血清肿瘤坏死因子-α(tumor necrosis factor-α,TNF-α)、白细胞介素-6(interleukin-6,IL-6)、白细胞介素-8(interleukin-8,IL-8)水平及血清肌酸激酶同工酶(creatine kinase isoenzyme,CK-MB)活性进行检测。结果治疗后,与对照组比较,实验组患者的血清TNF-α水平较低,差异具有统计学意义(P<0.05);实验组患者的血清IL-6、IL-8水平较低(P<0.05);实验组患者的血清CK-MB活性较低(P<0.05)。结论沙丁胺醇联合无创呼吸机能够显著降低慢性阻塞性肺病合并呼吸衰竭患者血清TNF-α、IL-6、IL-8水平及血清CK-MB活性,减轻炎症反应,减少心肌损害。

关键词：沙丁胺醇无创呼吸机慢性阻塞性肺病合并呼吸衰竭 TNF-α IL-6 IL-8 CK-MB

基于多源数据的禹城农田生态系统冬小麦生育期识别方法比较研究

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遥感技术与应用 2016年第5期31卷 958-965页

作者：冯艾琳何洪林刘利民任小丽张黎葛蓉赵凤华中国气象局气象干部培训学院辽宁分院辽宁沈阳110166 中国科学院地理科学与资源研究所生态系统网络观测与模拟重点实验室北京100101 中国科学院大学北京100049

多源数据与其技术方法逐渐被应用于植被物候的研究当中,但基于多源数据物候识别方法间的差异性比较及定量化评估工作还有待加强。以山东禹城农田生态系统为例,探讨了基于多源数据,NDVI、EVI、数字相机图片、碳通量数据(NEE)以及人工实... 详细信息

多源数据与其技术方法逐渐被应用于植被物候的研究当中,但基于多源数据物候识别方法间的差异性比较及定量化评估工作还有待加强。以山东禹城农田生态系统为例,探讨了基于多源数据,NDVI、EVI、数字相机图片、碳通量数据(NEE)以及人工实测数据获取的冬小麦主要生育日期的结果进行差异比较及定量化评估。结果表明:(1)通过碳通量数据获取的主要生育日期的计算结果与人工实测结果最接近,各阶段差异均<3d;通过数字相机图片获取的结果仅次于通过碳通量数据获取的结果,而通过遥感数据NDVI、EVI获取的结果与人工实测结果差距最大;(2)通过NDVI、EVI两种数据获取的冬小麦主要生育期结果具有极显著的相关性,最高达到R2=0.857(P<0.001);(3)基于多源数据获取的冬小麦主要生育期的计算结果,均显示出禹城站冬小麦返青期提前,蜡熟期推迟,生长季长度变长的年际变化特征。

关键词：遥感数字相机净生态系统碳交换量(NEE) 冬小麦物候期

Synthesis of chiral phosphine derivatives through a copper（I）-catalyzed desymmetric SNAr reaction

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Science China Chemistry 2025年

作者： Shuai zhang Pei-Zhi Liu Yan-Bo Li Qi zhang Jun-zhao Xiao Yi-Fan Wang Tian-Yu Wei Jia-Wei Jiang Ye Wang Qian Peng Liang Yin Key Laboratory of Fluorine and Nitrogen Chemistry and Advanced Materials Shanghai Institute of Organic Chemistry University of Chinese Academy of Sciences Chinese Academy of Sciences State Key Laboratory of Elemento-Organic Chemistry and Tianjin Key Laboratory of Biosensing and Molecular Recognition College of Chemistry Frontiers Science Center for New Organic Matter Nankai University Haihe Laboratory of Sustainable Chemical Transformations

Axially chiral phosphines are a class of extremely important ligands in asymmetric catalysis. Herein, an unprecedented copper（I）-catalyzed asymmetric SNAr reaction with HP（S）R2is uncovered, which delivers a series of axially chiral phosphine derivatives in high yields with excellent enantioselectivity. Furthermore, the diastereoselective reaction with the kinetic resolution of racemic HP（S）ArR proceeds smoothly, providing the products with moderate diastereoselectivity and excellent enantioselectivity. Control experiments indicate that HP（S）Ph2is much more active than HPPh2and HP（O）Ph2as the pronucleophile in the present reaction. It is found that the SNAr reaction （the first SNAr） proceeds in a desymmetric manner, providing the desired chiral products while a continued SNAr reaction （the second SNAr） slightly occurs in a kinetic resolution manner in the present catalytic system, which enhances the ee of the desired chiral products. DFTcalculations support a concerted reaction pathway rather than a step-wise mechanism. Finally, axially chiral olefin-phosphines produced by the present method work as suitable ligands in Pdcatalyzed asymmetric allylic substitution with C-, N-, and O-nucleophiles and Rh-catalyzed asymmetric addition of arylboronic acid to benzil.

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