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InvasionDB: A genome and gene database of invasive alien species

Journal of Integrative Agriculture 2021年第1期20卷 191-200页

作者： HUANG Cong lang Kun QIAN Wan-qiang WANG Shu-ping CAO Xiao-mei HE rui ZHAN An-ran CHEN Meng-yao YANG Nian-wan LI Fei Key Laboratory for Biology of Plant Disease and Insect Pests Institute of Plant ProtectionChinese Academy of Agricultural SciencesBeijing 100193P.R.China Shenzhen Branch Guangdong Laboratory for Lingnan Modern AgricultureGenome Analysis Laboratory of the Ministry of AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120P.R.China Minstry of Agriculture and Rural Affairs Key Laboratory of Molecular Biology of Crop Pathogens and Insects Institute of Insect SciencesZhejiang UniversityHangzhou 310058P.R.China Technical Centre for Animal Plant and Food Inspection and Quarantine Shanghai CustomsShanghai 200135P.R.China Chinese Academy of Inspection and Quarantine Beijing 100176P.R.China China National Center for Biotechnology Development Beijing 100039P.R.China

Invasive alien species(IAS) are species whose introduction to areas outside of their native range cause harm to economics, biodiversity, and the environment. Understanding the genetic basis of invasiveness is critical for preventing invasion by an alien species and managing IAS with eco-friendly control methods. In addition, uncovering the genomic features of IAS is essential for accurately predicting invasiveness. However, even though increasing efforts have been devoted to sequencing the genomes of IAS, there is still not an integrated genome database for the invasive biology community. Here, we first determined a list of invasive plants and animals by mining references and databases. Then, we retrieved the genomic and gene data of these IAS, and constructed a database, Invasion DB. Invasion DB encompasses 131 IAS genomes, 76 annotated IAS assemblies, and links these data to conventional functions such as searching for gene coding sequences and Pfam, KEGG, NR annotations, BLAST server, JBrowse, and downloads services. Next, we analyzed 19 invasivenessrelated gene families which confer invasiveness in insects. To study the roles of noncoding RNA in invasiveness, we also annotated 135 494 mi RNAs, 89 294 r RNAs, and 2 671 941 t RNAs from these IAS. In summary, Invasion DB is useful for studying the invasiveness at the genomic level, and thus helps to develop novel management strategies to control IAS.

关键词： database invasive alien species genomic gene family non-coding RNA

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A new weir surface repair layer with shock absorbing cushion design

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Earthquake Engineering and Engineering Vibration 2013年第3期12卷 487-496页

作者： Tse-Shan Hsu Yi-lang Hsieh Department of Civil Engineering Feng-Chia University Ph.D Program in Civil and Hydraulic Engineering Feng-Chia University

A shock absorbing cushion has never been introduced into any traditional weir surface repair layer design. However, shocks induced by high discharge with heavy sediment can easily produce brittle fracture and peeling over a weir surthce repair layer as it is impacted by floods accompanied by particles of different sizes. In this study, transcending traditional designs, the authors developed a composite unit designed with a shock absorbing cushion that has performed well during field tests, proving that the weir body can be effectively protected even if the composite units are directly laid on a severely uneven weir surface repair layer.

关键词： shock absorbing cushion brittle fracture peeling weir

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Testicular volume is a noninvasive predictor of sperm retrieval failure in idiopathic nonobstructive azoospermia

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Asian Journal of Andrology 2024年第4期26卷 421-425页

作者： Hong Xiao Song-Xi Tang rui-jie Yao Yi-lang Ding Peng Yang Qiang Chen Hai-Lin Huang Xi Chen Hui-Liang Zhou Department of Andrology and Sexual Medicine First Affiliated Hospital of Fujian Medical UniversityFuzhou 350005China.

We investigated the prognostic importance of noninvasive factors in predicting sperm retrieval failure in idiopathic nonobstructive azoospermia(iNOA).We studied 193 patients with nonobstructive azoospermia who underwent microsurgical testicular sperm *** Chi-square test and Mann–Whitney U tests for clinical parameters and seminiferous tubule distribution were used for between-group comparisons.A logistic regression analysis was conducted to identify predictors of retrieval *** under the receiver operating characteristic curve for each variable was evaluated,and the net clinical benefit was calculated using a clinical decision *** with iNOA had a lower sperm retrieval rate than those with known ***,testicular volume was an independent factor affecting sperm extraction outcomes(odds ratio=0.79,P<0.05).The testicular volume cut-off value was 6.5 ml(area under the curve:0.694).The patients with iNOA were categorized into two groups on the basis of the distribution of seminiferous tubules *** sperm retrieval rate and testicular volume were significantly different between the groups with a uniform or heterogeneous tubule *** was also a significant association between a uniform tubule distribution and testicular *** conclusion,a testicular volume of more than 6.5 ml effectively predicts microsurgical testicular sperm extraction failure due to a uniform tubule distribution in patients with iNOA.

关键词： idiopathic nonobstructive azoospermia microsurgical testicular sperm extraction sperm retrieval failure testicular volume

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Future extreme climate changes linked to global warming intensity

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Science Bulletin 2017年第24期62卷 1673-1680页

作者： Xiaoxin Wang Dabang jiang Xianmei lang Institute of Atmospheric Physics Chinese Academy of Sciences Beijing 100029 China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing 100101 China Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science & Technology Nanjing 210044 China Joint Laboratory for Climate and Environmental Change at Chengdu University of Information Technology Chengdu 610225 China University of Chinese Academy of Sciences Beijing 100049 China

Based on the Coupled Model Intercomparison Project Phase 5(CMIP5) daily dataset, we investigate changes of the terrestrial extreme climates given that the global mean temperature increases persistently under the Representative Concentration Pathways 8.5(RCP8.5) scenario. Compared to preindustrial conditions, more statistically significant extreme temperatures, precipitations, and dry spells are expected in the 21 st century. Cold extremes decrease and warm extremes increase in a warmer world, and cold extremes tend to be more sensitive to global warming than the warm ones. When the global mean temperature increases, cold nights, cold days, and warm nights all display nonlinear relationships with it,such as the weakening of the link projected after 3 °C global warming, while the other indices generally exhibit differently, with linear relationships. Additionally, the relative changes in the indices related to extreme precipitation show significantly consistent linear changes with the global warming *** with the precipitation extremes, changes in temperature extremes are more strongly related to the global mean temperature changes. For the projection of the extreme precipitation changes, models show higher uncertainty than that in extreme temperature changes, and the uncertainty for the precipitation extremes becomes more remarkable when the global warming exceeds 5 °C.

关键词： Projection Global warming Climate extremes Linkage Uncertainty

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Data-driven fault diagnosis method for analog circuits based on robust competitive agglomeration

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Journal of Systems Engineering and Electronics 2013年第4期24卷 706-712页

作者： Rongling lang Zheping Xu Fei Gao School of Electronic and Information Engineering Beihang University

The data-driven fault diagnosis methods can improve the reliability of analog circuits by using the data generated from it. The data have some characteristics, such as randomness and incompleteness, which lead to the diagnostic results being sensitive to the specific values and random noise. This paper presents a data-driven fault diagnosis method for analog circuits based on the robust competitive agglomeration （RCA）, which can alleviate the incompleteness of the data by clustering with the competing process. And the robustness of the diagnostic results is enhanced by using the approach of robust statistics in RCA. A series of experiments are provided to demonstrate that RCA can classify the incomplete data with a high accuracy. The experimental results show that RCA is robust for the data needed to be classified as well as the parameters needed to be adjusted. The effectiveness of RCA in practical use is demonstrated by two analog circuits.

关键词： data-driven fault diagnosis analog circuit robust competitive agglomeration (RCA).

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MECHANICAL-ELECTRIC COUPLING DYNAMICAL CHARACTERISTICS OF AN ULTRA-HIGH SPEED GRINDING MOTORIZED SPINDLE SYSTEM

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Chinese Journal of Mechanical Engineering 2008年第5期21卷 34-40页

作者： LUE lang XIONG Wanli GAO Hang National Engineering Research Center for High Efficiency Grinding Hunan University Changsha 410082 China College of Mechanical Engineering Dalian University of Technology Dalian 116011. China

On the basis of the traditional mechanical model of a grinding wheel rotor and the mechanical-electric coupling model with ideal sinusoidal supply, taking high-frequency converting current of inverter power switches into further consideration, a modified mechanical-electric coupling model is created. The created model consists of an inverter, a motorized spindle, a grinding wheel and grinding loads. Some typical non-stationary processes of the grinding system with two different supplies, including the starting, the speed rising and the break in grinding loads, are compared by making use of the created model. One supply is an ideal sinusoidal voltage source, the other is an inverter. The theoretical analysis of the high-order harmonic is also compared with the experimental result. The material strategy of suppressing high-order harmonic mechanical-electric coupling vibration by optimizing inverter operating parameters is proposed.

关键词： Ultra-high speed grinding Motorized spindle Mechanical-electric coupling Vibration Suppression

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Reviews of gas hydrate inhibitors in gas-dominant pipelines and application of kinetic hydrate inhibitors in China

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Chinese Journal of Chemical Engineering 2019年第9期27卷 2118-2132页

作者： Yanhong Wang Shuanshi Fan Xuemei lang Key Lab of Enhanced Heat Transfer and Energy Conservation Ministry Education School of Chemistry and Chemical Engineering South China University of Technology

During the development and application of natural gas,hydrate plugging the pipelines is a very important issue to ***,adding thermodynamic hydrate inhibitors(THIs)and kinetic hydrate inhibitors(KHIs)in gas-dominated pipelines is a main way to prevent hydrate plugging of flow *** paper mainly reviews the efforts to develop THIs and KHIs in the past 20 years,compare the role of various THIs,such as methanol,ethylene glycol and electrolyte,and give the tips in *** direction of KHIs is toward high efficiency,low toxicity,low pollution and low *** than a hundred inhibitors,including polymers,natural products and ionic liquids,have been synthesized in the past *** of them have better performance than the current commercial ***,there are still few problems,such as the complex synthesis process,high cost and low solubility,impeding the commercialization of these *** review also summarized some application of KHIs in *** of KHIs in China began *** are no KHIs used in gas *** a few field tests have been carried *** the end of this paper,the field test of self-developed KHIs by China is summarized,and the guidance is given according to the application results.

关键词： Gas hydrate Thermal hydrate inhibitor Kinetic hydrate inhibitor Dual-effect inhibitor Field testing

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Nuclear magnetic moments for J~π=2_1^+ state of ^(10)Be with ab initio Monte Carlo shell model calculation

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Science China(Physics,Mechanics & Astronomy) 2014年第2期57卷 239-243页

作者： LIU lang LI jian School of Science Jiangnan University College of Physics Jilin University

The magnetic moment of 2＋1 state for 10Be are calculated and investigated in terms of single particle orbits for protons and neutrons under the framework of ab initio Monte Carlo shell model method in an emax=3 model space. The reduced matrix elements of orbital and spin angular momentum are evaluated. It is found that the orientations of orbital angular momentum in different single particle orbits are consistent. Conversely, the orientations of spin in different single particle orbits tend to be chaotic. The nuclear magnetic moment of 2＋1 state for 10Be is obtained as 1.006 ,UN and is discussed in regards to the contribution of orbital and spin angular momentum both for protons and neutrons. The corresponding g-factor is also given.

关键词： nuclear magnetic moment Monte Carlo shell model 10Be ab initio

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A multi-model analysis of glacier equilibrium line altitudes in western China during the last glacial maximum

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Science China Earth Sciences 2019年第8期62卷 1241-1255页

作者： Dabang jiANG Yeyi LIU Xianmei lang Institute of Atmospheric Physics Chinese Academy of SciencesBeijing100029China CAS Center for Excellence in Tibetan Plateau Earth Sciences Beijing100101China Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science&TechnologyNanjing210044China University of Chinese Academy of Sciences Beijing100049China

Based on numerical experiments undertaken with nine climate models, the glacier equilibrium line altitudes(ELAs)in western China during the last glacial maximum(LGM) are investigated to deepen our understanding of the surface environment on the Tibetan Plateau. Relative to the preindustrial period, the summer surface air temperatures decrease by 4–8°C while the annual precipitation decreases by an average of 25% across the Tibetan Plateau during the LGM. Under the joint effects of reductions in summer temperature and annual precipitation, the LGM ELAs in western China are lowered by magnitudes that vary with regions. The ELAs in the southern margin and northwestern Tibetan Plateau decline by approximately 1100 m;the central hinterland, by 650–800 m;and the eastern part, by 550–800 m, with a downward trend from southwest to northeast. The reduction in ELAs is no more than 650 m in the Tian Shan Mountains within China and approximately 500–600 m in the Qilian Mountains and Altai Mountains. The high-resolution models to reproduce the low values of no more than 500 m in ELA reductions in the central Tibetan Plateau, which are consistent with the proxy records from glacier remains. The accumulation zones of the Tibetan Plateau glaciers are mainly located in the marginal mountains during the LGM and have areas 2–5 times larger than those of the modern glaciers but still do not reach the central part.

关键词： Last glacial maximum Western China Equilibrium line altitudes Glacier Simulation

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Isolation and Characterization of a Novel Chitosan-Binding Protein from Non-Heading Chinese Cabbage Leaves

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Journal of Integrative Plant Biology 2005年第4期47卷 452-456页

作者： Hui-PingCHEN lang-LaiXU CollegeofLifeSciences NanfingAgriculturalUniversityNanjing210095China／／CollegeofAgronomySouthChinaTropicalAgriculturalUniversityDanzhou571737China CollegeofLifeSciences NanfingAgriculturalUniversityNanjing210095China

Abstract: To know the mechanism of ammonia assimilation in non-heading Chinese cabbage (Brassica campestrish L. ssp. chinensis (L.) Makino) leaves regulated by chitosan (CTS), a CTS-binding protein was isolated from non-heading Chinese cabbage leaves using the chitosan affinity chromatography approach and this CTS-binding protein was partially characterized. The profile of the 53.1 kDa purified protein on sodium dodecyl sulfate-polyacrylamide gel electrophoresis was compared with the native molecular weight of 106.5 kDa, which indicated that the purified protein was a dimer with identical subunits. After isoelectric focusing, a band was obtained at pH 8.25. The agglutination test and periodic acid-Schiff staining further revealed that the protein was a glycoprotein with lectin activity. Moreover, the purified protein contained 17.4% (w/w) neutral carbohydrate and 82.56% (w/w) protein. The comparison of this protein and the 67 kDa CTS-binding protein isolated previously from Rubus culture tissue exhibited some differences in characterization. According to results of peptide mass fingerprinting analysis, the protein purified in the present study does not show any similarity with any protein in the protein data bank. Thus, it was deduced that the protein purified in the present study is a novel CTS-binding protein.

关键词： binding-protein chitosan non-heading Chinese cabbage

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