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A scale-integrated exploration model for orogenic gold deposits based on a mineral system approach

Geoscience Frontiers 2020年第3期11卷 719-738页

作者： David I.Groves m.Santosh Liang Zhang Orebusters Pty Ltd Gwelup6018WAAustralia State Key Laboratory of Geological Processes and mineral Resources China University of Geosciences(Beijing)Beijing100083China Dept.of Earth Sciences University of AdelaideSA5005Australia Yonsei Frontier Lab Yonsei UniversitySeoul120-749Republic of Korea

Concept-based orogenic gold exploration requires a scale-integrated approach using a robust mineral system *** genetic hypotheses for orogenic gold deposits that involve near-surface or magmatic-hydrothermal fluids are now negated in terms of a global mineral system *** models involve metamorphic fluids,but the fluid source has been *** metamorphic-fluid models are most widely-accepted but there are serious problems for Archean deposits,and numerous Chinese provinces,including Jiaodong,where the only feasible fluid source is *** all orogenic gold deposits define a coherent mineral system,there are only two realistic sources of fluid and gold,based on their syn-mineralization geodynamic *** are from devolatilization of a subducted oceanic slab with its overlying gold-bearing sulfide-rich sedimentary package,or release from mantle lithosphere that was metasomatized and fertilized during a subduction event,particularly adjacent to craton *** this model,CO_2 is generated during decarbonation and S and ore-related elements released from transformation of pyrite to pyrrhotite at about 500 ℃.This orogenic gold mineral system can be applied to conceptual exploration by first identifying the required settings at geodynamic to deposit *** these settings,it is then possible to define the critical gold mineralization processes in the system:fertility,architecture,and *** geological parameters that define these processes,and the geological,geophysical and geochemical proxies and responses for these critical parameters can then be *** the geodynamic to province scales,critical processes include a tectonic thermal engine and deep,effective,fluid plumbing system driven by seismic swarms up lithosphere-scale faults in an oblique-slip regime during uplift late in the orogenic cycle of a convergent *** the district to deposit scale,the important processes are fluid focussing into regio

关键词： mineral systems Orogenic gold Sub-crustal fluids Convergent margins Gold exploration

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人呼吸道合胞病毒兰州株全基因组序列测定及分析

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中国生物制品学杂志 2019年第7期32卷 735-741页

作者：朱传凤瓦晓霞傅生芳马超兰州生物制品研究所有限责任公司

目的为了解人呼吸道合胞病毒(human respiratory syncytium virus,HRSV)兰州株(HRSV LZ01/09)的遗传特征及分子进化规律,进一步丰富RSV基因组数据库,对HRSV LZ01/09的全基因组序列进行测定及分析。方法通过RT-PCR法对HRSV LZ01/09全基... 详细信息

目的为了解人呼吸道合胞病毒(human respiratory syncytium virus,HRSV)兰州株(HRSV LZ01/09)的遗传特征及分子进化规律,进一步丰富RSV基因组数据库,对HRSV LZ01/09的全基因组序列进行测定及分析。方法通过RT-PCR法对HRSV LZ01/09全基因组片段进行扩增及序列测定,利用分子生物学软件对测序结果进行拼接,并与GenBank登录的RSV实验参比株和各基因型代表株进行分子进化分析。结果 HRSV LZ01/09全基因组全长为15204 bp,基因组的结构为NS1-NS2-N-P-m-SH-G-F-m2-1-m2-2-L,与报道的RSV实验参比株相同;全基因组序列比对分析表明,HRSV LZ01/09兰州株基因组序列与RSV RSS2株的同源性最高,为96. 7%,与其他RSV-A亚型毒株同源性次之,为94. 9%~95. 2%,与RSV-B亚型9320株同源性最低,为80.9%;依据RSV-G基因的第2个可变区进行系统进化树分析,HRSV LZ01/09兰州株基因组与NA1病毒分离株属于同一个分支。结论HRSV LZ01/09兰州株病毒基因组具有RSV的遗传特征,属于RSV-A亚型,基因型属于NA1型。

关键词：呼吸道合胞病毒全基因组序列测定同源性系统进化树分析

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形状记忆合金-摩擦串联复合阻尼器对偏心结构振动控制的研究

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振动与冲击 2015年第8期34卷 112-116页

作者：任文杰姚会哲马志成宋娃丽河北工业大学土木工程学院天津300401 河北省土木工程技术研究中心天津300401

采用自行研制的SmA-摩擦串联复合阻尼器控制偏心结构的平扭耦联振动。SmA-摩擦串联复合阻尼器能根据结构的地震响应自动调节耗能单元工作状态,且构造简单、经济实用。建立了SmA-摩擦串联复合阻尼器控制下偏心结构在双向水平地震作用下... 详细信息

采用自行研制的SmA-摩擦串联复合阻尼器控制偏心结构的平扭耦联振动。SmA-摩擦串联复合阻尼器能根据结构的地震响应自动调节耗能单元工作状态,且构造简单、经济实用。建立了SmA-摩擦串联复合阻尼器控制下偏心结构在双向水平地震作用下的运动方程,并编写程序计算结构的时程响应。以一六层剪切型偏心钢框架为例,计算结果表明:合理布置的阻尼器能有效抑制结构质心位移和质心层间位移,且对扭转振动的控制效果更佳;阻尼器对结构质心平移加速度的影响不大,但显著改变了扭转加速度。

关键词：形状记忆合金-摩擦串联复合阻尼器偏心结构振动控制

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A Secured message Transmission Protocol for Vehicular Ad Hoc Networks

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Computers, materials & Continua 2021年第7期68卷 229-246页

作者： A.F.m.Suaib Akhter A.F.m.Shahen Shah mohiuddin Ahmed Nour moustafa UnalÇavu¸soglu Ahmet Zengin Department of Computer Engineering Sakarya UniversitySakarya54050Turkey Department of Electrical and Electronics Engineering Istanbul Gelisim UniversityIstanbulTurkey School of Science Edith Cowan UniversityPerthWA6027Australia School of Engineering and Information Technology UNSWCanberra BC2610Australia

Vehicular Ad hoc Networks(VANETs)become a very crucial addition in the Intelligent Transportation System(ITS).It is challenging for a VANET system to provide security services and parallelly maintain high throughput by utilizing limited *** overcome these challenges,we propose a blockchain-based Secured Cluster-based mAC(SCB-mAC)*** nearby vehicles heading towards the same direction will form a cluster and each of the clusters has its blockchain to store and distribute the safety *** message which contains emergency information and requires Strict Delay Requirement(SDR)for transmission are called safety messages(Sm).Cluster members(Cms)sign Sms with their private keys while sending them to the blockchain to confirm authentication,integrity,and confidentiality of the message.A Certificate Authority(CA)is responsible for physical verification,key generation,and privacy preservation of the *** implemented a test scenario as proof of concept and tested the safety message transmission(SmT)protocol in a real-world *** and storage overhead analysis shows that the proposed protocol for SmT implements security,authentication,integrity,robustness,non-repudiation,*** maintaining the *** that are less important compared to the Sms are called non-safety messages(NSm)and vehicles use RTS/CTS mechanism for NSm *** studies show that the proposed NSm transmission method maintains 6 times more throughput,2 times less delay and 125%less Packet Dropping Rate(PDR)than traditional mAC *** results prove that the proposed protocol outperforms the traditional mAC protocols.

关键词： Ad hoc networks data security digital signatures distributed storage intelligent vehicles vehicular ad hoc networks wireless communication

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CurveNet:Curvature-Based multitask Learning Deep Networks for 3D Object Recognition

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IEEE/CAA Journal of Automatica Sinica 2021年第6期8卷 1177-1187页

作者： A.A.m.muzahid wanggen wan Ferdous Sohel Lianyao Wu Li Hou School of Communications and Information Engineering Institute of Smart CityShanghai UniversityShanghai 200444China Discipline of Information Technology Murdoch UniversityMurdoch WA 6150Australia School of Information Engineering Huangshan UniversityHuangshan 245041China

In computer vision fields,3D object recognition is one of the most important tasks for many real-world ***-dimensional convolutional neural networks(CNNs)have demonstrated their advantages in 3D object *** this paper,we propose to use the principal curvature directions of 3D objects(using a CAD model)to represent the geometric features as inputs for the 3D *** framework,namely CurveNet,learns perceptually relevant salient features and predicts object class *** directions incorporate complex surface information of a 3D object,which helps our framework to produce more precise and discriminative features for object *** learning is inspired by sharing features between two related tasks,where we consider pose classification as an auxiliary task to enable our CurveNet to better generalize object label *** results show that our proposed framework using curvature vectors performs better than voxels as an input for 3D object *** further improved the performance of CurveNet by combining two networks with both curvature direction and voxels of a 3D object as the inputs.A Cross-Stitch module was adopted to learn effective shared features across multiple *** evaluated our methods using three publicly available datasets and achieved competitive performance in the 3D object recognition task.

关键词： 3D shape analysis convolutional neural network DNNs object classification volumetric CNN

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The Relationship between the Wintertime Blocking over Greenland and the Sea Ice Distribution over North Atlantic

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Advances in Atmospheric Sciences 1993年第4期10卷 453-464页

作者： John m.W allace Department of Atmospheric Sciences University of Washington Seattle WA 98195

The sea-ice concentration in the Northern Hemisphere, 500 hPa height, sea-level pressure and 1000-500 hPa thickness of monthly mean data are examined for the period 1953-1989, with emphasis on the winter *** between large-scale patterns of atmospheric variability and sea-ice variability are investigated, making use of the correlation method. The analysis is conducted for the Atlantic sectors. In agreement with earlier studies based upon monthly mean data on sea-ice concentration, the strongest sea-ice pattern is composed of a dipole with opposing centers of action in the Davis Straits / Labrador Sea region and the Greenland and Barents Seas. Its temporal variability is strongly coupled to the atmospheric North Atlantic Oscillation (NAO). The relationship between the two patterns is strongest with the atmosphere leading the ocean. The polarity of the NAO is associated with Greenland blocking episodes, during which the influence of the atmosphere is strong enough to temporarily halt the climatological mean advance of the ice edge in some regions and substantially accelerate it in *** relationships between the fields are indicative of local forcing of sea-ice in most regions, with wind stress and thermodynamic fluxes at the air-sea interface both contributing.

关键词： Sea-ice index Sea-ice distribution North Atlantic Oscillation Greenland Blocking Auto-correlation Correlation method

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粒度组成对高体积分数SiC_p/Al复合材料性能的影响

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材料热处理学报 2011年第3期32卷 14-18页

作者：刘君武李青鑫吴金方丁锋郑治祥合肥工业大学材料科学与工程学院安徽合肥230009

采用凝胶注模法制备SiC预制件用于无压熔渗液态铝合金实现60～67 vol%SiCp/Al复合材料的近净成形制备,研究了碳化硅颗粒级配及热处理对复合材料力学和热学性能的影响。结果表明:不同粒度的SiC粉体在铝基体中分布均匀,无明显偏聚现象;采... 详细信息

采用凝胶注模法制备SiC预制件用于无压熔渗液态铝合金实现60～67 vol%SiCp/Al复合材料的近净成形制备,研究了碳化硅颗粒级配及热处理对复合材料力学和热学性能的影响。结果表明:不同粒度的SiC粉体在铝基体中分布均匀,无明显偏聚现象;采用较细的SiC颗粒级配和退火处理都能有效提高复合材料强度;粗颗粒级配能增大SiC在复合材料中的体积分数,有利于导热性能的提高和热膨胀系数的降低;SiCp/Al复合材料抗弯强度介于240～365 mPa,室温时热导率介于122～175 W.m-1.℃-1之间,室温至250℃的平均线热膨胀系数小于7.5×10-6℃-1,满足电子封装的性能要求。

关键词： SiCp/Al 凝胶注模粒度级配热导率热膨胀系数

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机器人辅助腹腔镜下根治性膀胱切除加尿流改道术的临床分析

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中华泌尿外科杂志 2012年第10期33卷 744-748页

作者：陈光富张旭史立新马鑫郭刚许勇瓦斯里江·瓦哈甫解放军总医院泌尿外科北京100853

目的探讨采用da VinciS机器人系统完成机器人辅助腹腔镜下根治性膀胱切除（ro—*** laparoscopic radical cystectomy，RARC）加尿流改道术的临床可行性，并总结技术特点和临床效果。方法2007年12月至2012年3月膀胱尿路上皮癌患者22例，... 详细信息

目的探讨采用da VinciS机器人系统完成机器人辅助腹腔镜下根治性膀胱切除（ro—*** laparoscopic radical cystectomy，RARC）加尿流改道术的临床可行性，并总结技术特点和临床效果。方法2007年12月至2012年3月膀胱尿路上皮癌患者22例，男20例，女2例。年龄37～72岁，平均62岁。体质指数22．5～30．1kg／in。，平均26．1kg／m2。麻醉评分1～2分。术前肿瘤活检病理诊断为浸润性或高危的非肌层浸润性膀胱尿路上皮癌，术前检查均未发现有其他邻近脏器浸润、盆腔淋巴结转移或远处转移，临床分期均低于T2N。m。。全麻下行RARC加尿流改道术，其中行体外尿流改道术15例（原位新膀胱2例，回肠膀胱术13例），行完全腹腔镜下尿流改道术7例（回肠膀胱术2例，原位新膀胱5例）。结果本组22例手术均获得成功。手术时间300～667min，平均480min；出血量100～1200ml，平均550ml；淋巴结清扫数目6～25枚，平均15枚。术后2～3d下地活动，3～4d肠功能恢复，术后住院时间8～35d，平均16d。行原位新膀胱的患者术后1个月行膀胱造影确定无吻合口漏后拔除尿管和双侧输尿管支架管。术后随访4～49个月，平均32个月，复发2例，死亡1例，出现。肾积水2例，其余病例肾功能均正常，尿控较满意。结论根据初期的手术操作过程和随访结果，RARC加尿流改道术在临床上是可行的。更多的操作经验、长期和随机的对照研究将有助于对这一技术进行评估和推广。

关键词：机器人膀胱切除术尿流改道

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A pilot study of the association between genetic polymorphisms involved in estrogen signaling and infant male genital phenotypes

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Asian Journal of Andrology 2012年第5期14卷 766-772页

作者： Sheela Sathyanarayana Shanna H Swan Federico m Farin Hui-Wen Wilkerson michael Bamshad Richard Grady Chuan Zhou Stephen m Schwartzy Department of Pediatrics University of WashingtonSeattleWA 98195USA Center for Child Health Behaviorand DevelopmentSeattle Children's Research InstituteSeattleWA 98105USA Department of Preventive medicine Mount Sinai School of MedicineNew YorkNY 10029USA Department of Environmental and Occupational Health Sciences University of WashingtonSeattleWA 98195USA Department of Genome Sciences University of WashingtonSeattleWA 98195USA Division of Pediatric Urology Seattle Children's HospitalSeattleWA 98105USA Department of Epidemiology University of WashingtonSeattleWA 98195USA Epidemiology Program Fred Hutchinson Cancer Research CenterSeattleWA 98109USA

Single nucleotide polymorphisms （SNPs） in genes that influence development of the male reproductive tract have been associated with male genitourinary abnormalities. However, no studies have tested the relationship between SNPs and intermediate phenotypes such as anogenital distance （AGD）, anoscrotal distance （ASD） and penile width （PW）. We tested whether 24 common SNPs in eight genes that influence male genital development were associated with intermediate phenotypes in 106 healthy male infants from the Study for Future Families. We used DNA from buccal smears and linear regression models to assess the relationship between anogenital measurements and SNP genotypes with adjustment for covariates. We found that the rs2077647 G allele, located in the coding region of estrogen receptor alpha （ESR1）, was associated with a shorter AGD （P=0.02; -7.3 mm, 95% confidence interval （CI）： -11.6 to -3.1）, and the rs10475 T allele, located in the 3＇ untranslated region of activating transcription factor 3 （ATF3）, was associated with a shorter ASD （-4.3 mm, 95% Ch -7.2 to -1.4）, although this result was not significant （P=0.07） after controlling for multiple comparisons. We observed no association between PW and the SNPs tested. minor alleles for two SNPs in genes that regulate estrogen signaling during male genital development were associated with AGD and ASD, although the significance of the association was marginal. Our findings suggest that AGD and ASD are influenced by heritable factors in genes known to be associated with frank male genital abnormalities such as hvpospadias and crvotorchidism.

关键词： gene hypospadias male phenotype polymorphism reproductive

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Self-centering steel plate shear walls for improving seismic resilience

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Frontiers of Structural and Civil Engineering 2016年第3期10卷 283-290页

作者： Patricia m. CLAYTON Daniel m. DOWDEN Chao-Hsien LI Jeffrey W. BERmAN michel BRUNEAU Laura N. LOWES Keh-Chuan TSAI Department of Civil Architectural and Environmental Engineering University of Texas at Austin Austin TX 78705 USA Department of Civil Structural and Environmental Engineering University at Buffalo New York 14260-1660 USA National Center for Research on Earthquake Engineering Taipei Taiwan China Department of Civil and Environmental Engineering University of Washington Seattle WA 98195-2700 USA Department of Civil Structural and Environmental Engineering Taiwan University Taipei Taiwan China

As part of a Network for Earthquake Engineering Simulation research project led by researchers at the University of washington with collaborators at University at Buffalo, and Taiwan National Center for Research on Earthquake Engineering, a self-centering steel plate shear wall （SC-SPSW） system has been developed to achieve enhanced seismic performance objectives, including recentering. The SC-SPSW consists of thin steel infill panels, referred to as web plates that serve as the primary lateral load-resisting and energy dissipating element of the system. Post- tensioned （PT） beam-to-column connections provide system recentering capabilities. A performance-based design procedure has been developed for the SC-SPSW, and a series of nonlinear response history analyses have been conducted to verify intended seismic performance at multiple hazard levels. Quasi-static subassembly tests, quasi-static and shake table tests of scaled three-story specimens, and pseudo-dynamic tests of two full-scale two-story SC-SPSWs have been conducted. As a culmination of this multi-year, multi-institutional project, this paper will present an overview of the SC- SPSW numerical and experimental research programs. This paper will also discuss innovative PT connection and web plate designs that were investigated to improve constructability, resilience, and seismic performance and that can be applied to other self-centering and steel plate shear wall systems.

关键词： self-centering steel plate shear walls large-scale experiment post-tensioned connections performance-baseddesign

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