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中长期 1

任务调度 1

发电供应能力 1

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手写识别；隐马尔科夫模型；深度学习；深度置信网络；串联方法 1

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智联计算网络；多样化协议；“网 ‒ 算 ‒ 存”一体化；服务功能智能编排；内生安全 1

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Alluvial channel hydrodynamics around tandem piers with downward seepage

Rutuja CHAVAN, Wenxin HUAI, Bimlesh KUMAR

《结构与土木工程前沿（英文）》 2020年 第14卷 第6期   页码 1445-1461 doi: 10.1007/s11709-020-0648-x

摘要： In this paper, we report the turbulent flow structures and the scour geometry around two piers with different diameters. An experiment was conducted on a non-uniform sand bed with two types of tandem arrangements, namely, pier (T1) with a 75 mm front and 90 mm rear, and pier (T2) with a 90 mm front and 75 mm rear, with and without-seepage flows, respectively. A strong wake region was observed behind the piers, but the vortex strength diminished with downward seepage. Streamwise velocity was found to be maximum near the bed downstream of the piers and at the edge of the scour hole upstream of the piers. Quadrant analysis was used to recognize the susceptible region for sediment entrainment and deposition. Upstream of the piers near the bed, the moments, turbulent kinetic energy (TKE), and TKE fluxes were found to decrease with downward seepage, in contrast to those in a plane mobile bed without piers. The reduction percentages of scour depth at the rear pier compared with the front one were approximately 40% for T1 and 60% for T2. Downward seepage also resulted in restrained growth of scouring with time.

关键词： scour     seepage     Strouhal number     tandem arrangement     turbulent characteristics    

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Design of tandem genes cluster for isoflavone engineering

Xunli XIA PhD , Guangxiao YANG PhD , Guangyuan HE PhD ,

《医学前沿（英文）》 2009年 第3卷 第3期   页码 292-296 doi: 10.1007/s11684-009-0057-y

摘要： In this paper, a universal effective novel method of constructing tandem genes cluster for isoflavone engineering was reported. A tandem genes cluster () of secondary metabolites of plant isoflavones was constructed by using the chalcone synthase (CHS), chalcone isomerase (CHI), and isoflavone synthase (IFS) (GenBank accession numbers EU526827, EU526829, EU526830) in only one recombination with the pET22b vector. The resulting expression vector pET- was heterogeneously expressed and co-incubated with barrenwort extractions, and the genistein-like component was detected.

关键词： isoflavones engineering     secondary metabolism     tandem genes cluster    

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Available energy analysis of new tandem double-capillary tube refrigeration system for refrigerator-freezers

HE Maogang, ZHANG Ying, SONG Xinzhou, ZHANG Jiantao

《能源前沿（英文）》 2008年 第2卷 第1期   页码 36-42 doi: 10.1007/s11708-008-0013-6

摘要： A new tandem double-capillary tube refrigeration system for refrigerator-freezers is proposed. A capillary tube was added between the two evaporators in the fresh and frozen food storage chests to raise the evaporation temperature of the refrigerating chamber, and reduce the heat exchange temperature difference and the available energy loss. Peng-Robinson (P-R) equation of state was adopted to calculate the thermodynamic properties of the refrigerants, and the available energy analysis of the vapor compression refrigeration cycle was programmed to calculate the thermodynamic performances of the new and the conventional refrigeration cycle of the refrigerator-freezer. The calculation results show that the available energy efficiency of the conventional refrigeration cycle of the refrigerator-freezer is 21.20% and 20.57%, respectively when the refrigerant is R12 and R134a, while that of the double-capillary tube refrigeration cycle of the refrigerator-freezer is 23.97% and 23.44%, respectively. By comparison, the available energy efficiency of the new refrigeration system increases by 13.07% and 13.95%, respectively.
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Conserved gene arrangement in the mitochondrial genomes of barklouse families Stenopsocidae and Psocidae

Xiaochen LIU, Hu LI, Yao CAI, Fan SONG, John-James WILSON, Wanzhi CAI

《农业科学与工程前沿（英文）》 2017年 第4卷 第3期   页码 358-365 doi: 10.15302/J-FASE-2017158

摘要： Substantial variation in gene organization and arrangement has been reported for sequenced mitochondrial (mt) genomes from the suborders of the insect order Psocoptera. In this study we sequenced the complete mt genome of , the first representative of the family Stenopsocidae from the suborder Psocomorpha. Relative to the ancestral pattern, rearrangements of a protein-coding gene ( ) and five tRNA genes ( , , , , ) were found. This pattern was similar to that of two barklice from the family Psocidae, with the exception of the translocation of , and Based on comparisons of pairwise breakpoint distances of gene rearrangements, gene number and chromosome number, it was concluded that mt genomes of Stenopsocidae and Psocidae share a relatively conserved pattern of gene rearrangements; mt genomes within the Psocomorpha have been generally stable over long evolutionary history; and mt gene rearrangement has been substantially faster in the booklice (suborder Troctomorpha) than in the barklice (suborders Trogiomorpha and Psocomorpha). It is speculated that the change of life history and persistence of unusual reproductive systems with maternal inheritance contributed to the contrasting rates in mt genome evolution between the barklice and booklice.

关键词： gene rearrangement     mitochondrial genome     Psocoptera     Stenopsocidae     TDRL model    

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集成产品开发规划的任务调度

鲁建厦,陈呈频,兰秀菊,陈勇,谢列卫

《中国工程科学》 2004年 第6卷 第5期   页码 56-60

摘要：

在阐述集成产品开发（IPD）任务特点的基础上，研究了集成产品开发任务的耦合性和层次性，建立了分层分布式规划的策略，并引入代价矩阵概念，给出了任务调度模型和相应的匈牙利算法，并用实例演示了计算过程。

关键词： 集成产品开发     任务调度     过程规划     目标决策    

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Exhaust hood for steam turbines-single-flow arrangement

Michal HOZNEDL , Ladislav TAJC , Jaroslav KREJCIK , Lukas BEDNAR , Kamil SEDLAK , Jiri LINHART ,

《能源前沿（英文）》 2009年 第3卷 第3期   页码 321-329 doi: 10.1007/s11708-009-0039-4

摘要： In the past, increased attention was given to the development of an optimal shape for the inlet part of LP turbine casings in SKODA POWER. A double-flow design is typically used for high power output turbines. An optimized shape for the internal diffuser has been found, which transforms the kinetic energy of steam into increased pressure, thus effectively increasing the thermodynamic efficiency of the stage. Some conclusions have been drawn from laboratory experiments, others derived directly from on-site measurements at power plants. The conclusions from the development of double-flow turbines form the basis for the design of the single-flow turbine arrangement. Single-flow design is typically used for lower output turbines. There are still some limitations in applying this arrangement. The designer needs to resolve the bearing position and how to ensure access to them. Reinforcing the ribs and supports are used, therefore, to ensure the rigidity of the entire casing. The optimization of the single-flow diffuser shape is therefore the subject of the study presented below.

关键词： exhaust hood     steam turbines     single-flow arrangement    

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quantification of several classes of antibiotics in water, sediments, and fish muscles by liquid chromatography–tandem

WEI Yimei,ZHANG Yuan,XU Jian,GUO Changsheng,LI Lei,FAN Wenhong

《环境科学与工程前沿（英文）》 2014年 第8卷 第3期   页码 357-371 doi: 10.1007/s11783-013-0580-6

摘要： Precise and sensitive methods for the simultaneous determination of different classes of antibiotics, including sulphonamides, fluoroquinolones, macrolides, tetracyclines, and trimethoprim in surface water, sediments, and fish muscles were developed. In water samples, drugs were extracted with solid-phase extraction (SPE) by passing 1000 mL of water through hydrophilic lipophilic balanced (HLB) SPE cartridges. Sediment samples were solvent-extracted, followed by tandem SPE (strong anion exchange (SAX) + HLB) clean-ups. Fish muscles were extracted by a mixture of acetonitrile and citric buffer (80:20, v/v) solution, and cleaned by SPE. Liquid chromatography–tandem mass spectrometry (LC-MS/MS) with multiple reaction monitoring (MRM) detection was employed to quantify all compounds. The recoveries for the antibiotics in the spiked water, sediment, and fish samples were 60.2%–95.8%, 48.1%–105.3%, and 59.8%–103.4%, respectively. The methods were applied to samples taken from Dianchi Lake, China. It showed that concentrations of the detected antibiotics ranged from limits of quantification (LOQ) to 713.6 ng·L (ofloxacin) in surface water and from less than LOQ to 344.8 μg·kg (sulphamethoxazole) in sediments. The number of detected antibiotics and the overall antibiotic concentrations were higher in the urban area than the rural area, indicating the probable role of livestock and human activities as important sources of antibiotic contamination. In fish muscles, the concentration of norfloxacin was the highest (up to 38.5 μg·kg ), but tetracyclines and macrolides were relatively low. Results showed that the methods were rapid and sensitive, and capable of determining several classes of antibiotics from each of the water, sediment, and fish matrices in a single run.

关键词： antibiotics     liquid chromatography–tandem mass spectrometry (LC-MS/MS)     water     sediment     fish muscle    

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water using liquid-liquid microextraction coupled with gas chromatography—positive chemical ionization-tandem

Jian LU,Paul S. WILLS,P. CHRIS WILSON

《环境科学与工程前沿（英文）》 2016年 第10卷 第3期   页码 477-481 doi: 10.1007/s11783-015-0820-z

摘要： A rapid, inexpensive and laboratory friendly method was developed for analysis of off-flavor/odor compounds in fresh and salt water using gas chromatography with chemical ionization-tandem mass spectrometry. Off-flavor/odor compounds included geosmin, 2-methylisoborneol (MIB), 2-isobutyl-3-methyoxypyrazine (IBMP), and 2-isopropyl-3-methoxypyrazine (IPMP). Using this method, a single sample can be extracted within minutes using only 1 mL of organic solvent. The ion transitions for IPMP, IBMP, MIB, and geosmin were 153>121, 167>125, 152>95, and 165>109, respectively. The linearity of this method for analyzing MIB ranged from 4 to 200 ng·L , and from 0.8 to 200 ng·L for the other analytes. Method recoveries ranged from 97% to 111% and percent relative standard deviations ranged from 3% to 9%, indicating that the method is accurate, precise, and reliable.

关键词： off-flavor/odor compounds     liquid-liquid microextraction     gas chromatography-tandem mass spectrometry    

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Ultrathin microcrystalline hydrogenated Si/Ge alloyed tandem solar cells towards full solar spectrum

Yu Cao, Xinyun Zhu, Xingyu Tong, Jing Zhou, Jian Ni, Jianjun Zhang, Jinbo Pang

《化学科学与工程前沿（英文）》 2020年 第14卷 第6期   页码 997-1005 doi: 10.1007/s11705-019-1906-0

摘要： Thin film solar cells have been proved the next generation photovoltaic devices due to their low cost, less material consumption and easy mass production. Among them, micro-crystalline Si and Ge based thin film solar cells have advantages of high efficiency and ultrathin absorber layers. Yet individual junction devices are limited in photoelectric conversion efficiency because of the restricted solar spectrum range for its specific absorber. In this work, we designed and simulated a multi-junction solar cell with its four sub-cells selectively absorbing the full solar spectrum including the ultraviolet, green, red as well as near infrared range, respectively. By tuning the Ge content, the record efficiency of 24.80% has been realized with the typical quadruple junction structure of a-Si:H/a-Si Ge :H/µc-Si:H/µc-Si Ge :H. To further reduce the material cost, thickness dependent device performances have been conducted. It can be found that the design of total thickness of 4 m is the optimal device design in balancing the thickness and the . While the design of ultrathin quadruple junction device with total thickness of 2 m is the optimized device design regarding cost and long-term stability with a little bit more reduction in . These results indicated that our solar cells combine the advantages of low cost and high stability. Our work may provide a general guidance rule of utilizing the full solar spectrum for developing high efficiency and ultrathin multi-junction solar cells.

关键词： thin films     solar cells     quadruple junction solar cell     amorphous silicon     silicon germanium alloy     quantum efficiency    

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融合深度置信网络的串联隐马尔科夫模型及其在脱机手写识别中的应用 Article

Partha Pratim ROY, Guoqiang ZHONG, Mohamed CHERIET

《信息与电子工程前沿（英文）》 2017年 第18卷 第7期   页码 978-988 doi: 10.1631/FITEE.1600996

摘要： 在文档分析和模式识别领域，自由书写的脱机手写识别是一个非常具有挑战性的研究课题。近年来，为了充分探索隐藏在文档图像中的监督信息，许多研究工作试图将多层感知机以一种混合或串联的形式嵌入隐马尔科夫模型当中。然而，因为多层感知机学习能力的不足，学习到的特征对于后续的识别任务不一定是最优的。在本文中，我们针对自由书写的脱机手写识别提出一种基于深度结构的串联方法。在提出的模型中，深度置信网络被用于学习序列数据的紧致表示，隐马尔科夫模型被用于（子-）词的识别。我们在两个公开的数据集上验证了所提出的模型，这两个数据集是分别基于拉丁和阿拉伯语的RIMES和IFN/ENIT；我们还在Devanagari数据集上验证了所提出的模型，这个数据集是基于印度语的。大量的实验展示了所提出模型的优势，特别是相对于多层感知机-隐马尔科夫模型的串联方法。

关键词： 手写识别；隐马尔科夫模型；深度学习；深度置信网络；串联方法    

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Repeats in the transcribed regions: comprehensive characterization and comparison of

Manosh Kumar BISWAS, Christoph MAYER, Xiuxin DENG

《农业科学与工程前沿（英文）》 2017年 第4卷 第4期   页码 421-432 doi: 10.15302/J-FASE-2017160

摘要： A large number of expressed sequences tags are available for spp., which provides an opportunity to understand genomic organization of the transcribed regions. Here, we report a detailed analysis of repetitive elements including tandem repeats (TRs) and transposable elements (TEs) in the transcribed region of the spp. On average, 22% of the expressed sequence tags (ESTs) contain TRs. The relative density of TR classes is highly taxon-specific. For instance, has a high relative density of mononucleotide repeats, whereas dinucleotide repeats are rare. The proportions of 2–6, 7–30 and 31–50 bp repeats were almost identical in all studied species except for and . We found that<1% of the citrus ESTs have a similarity with transposable elements. Transcriptional activity of transposable element families varied even within the same class of elements. A high proportion of transcriptional activity was observed for -like TEs compare to other TE classes. While TEs are relatively rare, TRs are abundant elements in ESTs of citrus. The high proportion of TRs that have a unit size longer than 6 bp raises the question about a possible functional or evolutionary role of these elements.

关键词： Citrus spp.     tandem repeats     transcribed region     transposable elements    

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Detecting

Chengkun WANG, Xiaojian ZHANG, Jun WANG, Chao CHEN

《环境科学与工程前沿（英文）》 2012年 第6卷 第6期   页码 770-777 doi: 10.1007/s11783-012-0412-0

摘要： nitrosodimethylamine (NDMA) and several other nitrosamines have been detected as disinfection by-products in drinking waters in many countries around the world. An ultra-performance liquid chromatography-tandem mass spectrometry method with solid phase extraction sample preparation was developed to study the occurrence of nitrosamines in several water treatment plants and distribution systems in China. Isotope labeled nitrosodi- propylamine-d14 (NDPA-d14) was selected as the internal standard for quantification. The solid phase extraction procedures including pH, enrichment process and MS/MS parameters including capillary voltage, cone gas flow, cone voltage, collision energy were optimized to give average recoveries of 26% to 112% for nine nitrosamine species. The instrument detection limits were estimated to range from 0.5 to 5 μg·L for the nine nitrosamine species. NDMA and several other nitrosamines were found at fairly high concentrations in several water treatment plants and distribution systems. NDMA was found in all locations, and the highest concentrations in cities B, G, T, and W were 3.0, 35.7, 21.3, and 19.7 ng·L , respectively. A wide range of nitrosamines concentrations and species were observed in different locations. Higher concentrations of nitrosamines were detected in distribution systems that were further away from the treatment plants, suggesting that the contact time between the residual disinfectant and natural organic matter may play an important role in the formation of these compounds.

关键词： N-nitrosamines     water treatment plant     distribution system     ultra-performance liquid chromatography-tandem mass spectrometry    

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渤海海峡通道建设中需要进一步思考的几个问题

洪开荣

《中国工程科学》 2013年 第15卷 第12期   页码 80-84

摘要：

渤海海峡通道对于推动环渤海经济区，乃至我国东部的高层次发展具有重大作用，是一项战略性工程。本文基于老铁山水道段采用隧道方式修建的共识，进一步论证了整个通道的修建方式、工程纵断面、施工工法的选择与工程的整体筹划，提出了渤海海峡通道以全隧道方式、考虑填海造地的两地下站布局，采用敞开式tunnel boring machine（TBM）为主、钻爆法为辅的配套修建技术与工法。

关键词： 海峡隧道     施工方法     施工筹划     竖井布置    

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Characteristics and removal mechanism of the precursors of N-chloro-2,2-dichloroacetamide in a drinking water treatment process at Taihu Lake

《环境科学与工程前沿（英文）》 2021年 第15卷 第5期 doi: 10.1007/s11783-020-1338-6

摘要：

• N-Cl-DCAM, an emerging N-DBP in drinking water was investigated.

关键词： N-chloro-2     2-dichloroacetamide     Liquid chromatography with tandem mass spectrometry     Precursors     Removal efficiency     Ozonation integrated with biological activated carbon    

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我国中长期发电供应能力研究

白建华, 辛颂旭

《中国工程科学》 2011年 第13卷 第6期   页码 65-74

摘要：

结合我国能源资源储量、禀赋特点和能源发展相关政策，对我国中长期发电供应能力进行了全面的分析，包括燃煤发电、水电、核能发电、风力发电、太阳能发电、生物质能发电和天然气发电的供应能力。在此基础上，以社会总体成本最小为原则，对我国中长期电源结构调整进行了研究，同时研判了我国中长期电源发展布局。

关键词： 发电供应能力     中长期     电源结构     电源布局    

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标题 作者 时间 类型 操作

Alluvial channel hydrodynamics around tandem piers with downward seepage

Rutuja CHAVAN, Wenxin HUAI, Bimlesh KUMAR

期刊论文

Design of tandem genes cluster for isoflavone engineering

Xunli XIA PhD , Guangxiao YANG PhD , Guangyuan HE PhD ,

期刊论文

Available energy analysis of new tandem double-capillary tube refrigeration system for refrigerator-freezers

HE Maogang, ZHANG Ying, SONG Xinzhou, ZHANG Jiantao

期刊论文

Conserved gene arrangement in the mitochondrial genomes of barklouse families Stenopsocidae and Psocidae

Xiaochen LIU, Hu LI, Yao CAI, Fan SONG, John-James WILSON, Wanzhi CAI

期刊论文

集成产品开发规划的任务调度

鲁建厦,陈呈频,兰秀菊,陈勇,谢列卫

期刊论文

Exhaust hood for steam turbines-single-flow arrangement

Michal HOZNEDL , Ladislav TAJC , Jaroslav KREJCIK , Lukas BEDNAR , Kamil SEDLAK , Jiri LINHART ,

期刊论文

quantification of several classes of antibiotics in water, sediments, and fish muscles by liquid chromatography–tandem

WEI Yimei,ZHANG Yuan,XU Jian,GUO Changsheng,LI Lei,FAN Wenhong

期刊论文

water using liquid-liquid microextraction coupled with gas chromatography—positive chemical ionization-tandem

Jian LU,Paul S. WILLS,P. CHRIS WILSON

期刊论文

Ultrathin microcrystalline hydrogenated Si/Ge alloyed tandem solar cells towards full solar spectrum

Yu Cao, Xinyun Zhu, Xingyu Tong, Jing Zhou, Jian Ni, Jianjun Zhang, Jinbo Pang

期刊论文

融合深度置信网络的串联隐马尔科夫模型及其在脱机手写识别中的应用

Partha Pratim ROY, Guoqiang ZHONG, Mohamed CHERIET

期刊论文

Repeats in the transcribed regions: comprehensive characterization and comparison of

Manosh Kumar BISWAS, Christoph MAYER, Xiuxin DENG

期刊论文

Detecting

Chengkun WANG, Xiaojian ZHANG, Jun WANG, Chao CHEN

期刊论文

渤海海峡通道建设中需要进一步思考的几个问题

洪开荣

期刊论文

Characteristics and removal mechanism of the precursors of N-chloro-2,2-dichloroacetamide in a drinking water treatment process at Taihu Lake

期刊论文

我国中长期发电供应能力研究

白建华, 辛颂旭

期刊论文