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地震速度预测岩性和孔隙度的硅屑岩物性分类

国外油气勘探 1993年第2期 174-187页

作者： Lev Vernik amos nur 朱起煌

为了研究硅屑岩的物性分类并设计可描述这类岩石物性参数之间关系的新模式,对于碎屑沉积层序中存在的各类岩石进行了大量的、高有效压力下的物性测量,建立了内容广泛的数据库。在光学显微镜、扫描电镜(SEM)和实验数据的基础上,划分了四... 详细信息

为了研究硅屑岩的物性分类并设计可描述这类岩石物性参数之间关系的新模式,对于碎屑沉积层序中存在的各类岩石进行了大量的、高有效压力下的物性测量,建立了内容广泛的数据库。在光学显微镜、扫描电镜(SEM)和实验数据的基础上,划分了四个重要的物性组:(1)纯净的砂屑岩;(2)蚀变的砂屑岩和长石砂岩;(3)瓦克岩;(4)砂质页岩。每个物性组都由不同的矿物组成、结构和粘土的构造位置来表征。第二组中的粘土矿物主要是不稳定硅酸盐矿物和岩屑的成岩分解产物,由此导致了这些颗粒支撑的岩石的弹性模量的急剧变小。另外页岩为基质支撑的岩性,在较低程度上瓦克岩也是如此,这就是在类似的孔隙度下它们的弹性模量低于前两组岩石的原因。据发现,每组岩石都有线性的纵波速度—孔隙度关系,且有很高的相关系数。与时间平均方程和线性回归法相比,这种方法可根据声波测井曲线得出相当准确的孔隙度估算或岩性预测,因为前两者都没有考虑岩石的矿物和结构因素。此外还发现,体现各物性组线性趋势特征的孔隙度—速度曲线,主要反映了成岩作用的过程。砂岩和页岩的初始岩化(固结作用),基本上表现为小规模的局部接触粘结,因为在颗粒界面发生了化学作用,因而具有切变模量急剧增大的特征。虽然这一成岩阶段的孔隙度缩减十分有限,但速度有明显增加。进一步的成岩作用表现为较为平缓的线性趋势,反映了相当可观的孔隙度缩减,其原因在于在温度作用下,颗粒支撑的岩石发生了溶解—沉淀,而基质支撑的岩石发生了粘土的相转化。

关键词：地震波速岩性预测孔隙度硅质岩物性分类

四维地震学和（真正的）直接炭氢检测：岩石物理的基础

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石油物探快讯 1990年第1期7卷 27-36页

作者：林林 nur,amos 地矿部石油物探研究所

含流体岩石弹性形变状态下的精确有效应力定理

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油气地球物理 2018年第1期16卷 59-62页

作者： amos nur 王鸿升胜利油田分公司物探研究院山东东营257022

有效应力σ_(ij)的精确表达式,特别是导致有孔隙流体材料的弹性应变的应力P(有效应力)是基于假设之上的,仅对Hook定律有效,即σ_(ij)=σ_(ij)-αPδ_(ij)和P=P_c-P_p,这里α=1-(K/K_s),P_c和P_p是围压和孔隙压力,K和K_s分别是干燥岩石(... 详细信息

有效应力σ_(ij)的精确表达式,特别是导致有孔隙流体材料的弹性应变的应力P(有效应力)是基于假设之上的,仅对Hook定律有效,即σ_(ij)=σ_(ij)-αPδ_(ij)和P=P_c-P_p,这里α=1-(K/K_s),P_c和P_p是围压和孔隙压力,K和K_s分别是干燥岩石(排水状态下)和岩石基质(岩石固体部分)的体积模量。Geertsma(1957年)和Skempton(1960年)在实验的基础上首次提出关于P的方程。该表达式虽然不直接依赖于孔隙度,但是当有效应力P等于围压时孔隙消失,因此K=Ks。如果使用σ_(ij)方程中的有效应力定理,那么可根据没有孔隙压力的固体弹性模量确定一个具有孔隙压力的多孔固体的应变。有效应力表达式非常准确地描述了砂岩和花岗岩样品在围压和孔隙压力达到2.5kb(250MPa)时的应变。结果表明,该有效应力定理不适用于非弹性过程(如断裂)。

关键词：流体形变孔隙度有效应力

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破裂与增生构造

地震地质译丛

地震地质译丛 1985年第6期 20-24页

作者： amos nur Zvi Ben-Avraham 郑剑东

世界上一些大山脉的构造复杂性似乎是主要板块碰撞的结果,而另一些山脉则是许多监列裂块形成的,通常称为"外来地体",它们的源地很远,例如北美西部的大山脉,均由这种外来地体组成的。现在许多类似的外来体可以是高原,它们约占现在海底的... 详细信息

世界上一些大山脉的构造复杂性似乎是主要板块碰撞的结果,而另一些山脉则是许多监列裂块形成的,通常称为"外来地体",它们的源地很远,例如北美西部的大山脉,均由这种外来地体组成的。现在许多类似的外来体可以是高原,它们约占现在海底的10%。这些高原镶嵌于海洋板块并随其迁移,最终要增生于大陆俯冲带之中。这种增生作用涉及这些问题:包括边缘活动带的火山空区,不规则的地震活动类型、蛇绿岩的侵位、造山变形,大陆通过这种过程增长以及边缘盆地的圈闭。

关键词：安第斯山脉安第斯山系冈瓦纳古陆环太平洋带中生代中生界地质年代纳兹卡古太平洋海岭洋脊地体蛇绿岩超基性岩地震空区地震空白区大陆地壳大陆型地壳二叠纪侵位造山带褶皱带构造带沉积物源火山活动

A Decentralized and TCAM-Aware Failure Recovery Model in Software Defined Data Center Networks

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Computers, Materials & Continua 2025年第1期82卷 1087-1107页

作者： Suheib Alhiyari Siti Hafizah AB Hamid nur Nasuha Daud Department of Computer System and Technology University of MalayaKuala Lumpur50603Malaysia

Link failure is a critical issue in large networks and must be effectively *** software-defined networks(SDN),link failure recovery schemes can be categorized into proactive and reactive *** schemes have longer recovery times while proactive schemes provide faster recovery but overwhelm the memory of switches by flow *** SDN adoption grows,ensuring efficient recovery from link failures in the data plane becomes *** particular,data center networks(DCNs)demand rapid recovery times and efficient resource utilization to meet carrier-grade *** paper proposes an efficient Decentralized Failure Recovery(DFR)model for SDNs,meeting recovery time requirements and optimizing switch memory resource *** DFR model enables switches to autonomously reroute traffic upon link failures without involving the controller,achieving fast recovery times while minimizing memory *** employs the Fast Failover Group in the OpenFlow standard for local recovery without requiring controller communication and utilizes the k-shortest path algorithm to proactively install backup paths,allowing immediate local recovery without controller intervention and enhancing overall network stability and *** employs flow entry aggregation techniques to reduce switch memory *** of matching flow entries to the destination host’s MAC address,DFR matches packets to the destination switch’s MAC *** reduces the switches’Ternary Content-Addressable Memory(TCAM)***,DFR modifies Address Resolution Protocol(ARP)replies to provide source hosts with the destination switch’s MAC address,facilitating flow entry aggregation without affecting normal network *** performance of DFR is evaluated through the network emulator Mininet 2.3.1 and Ryu 3.1 as SDN *** different number of active flows,number of hosts per edge switch,and different network sizes,the proposed model outperformed vario

关键词： Software defined networking failure detection failure recovery restoration protection TCAM size

A Survey of Link Failure Detection and Recovery in Software-Defined Networks

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Computers, Materials & Continua 2025年第1期82卷 103-137页

作者： Suheib Alhiyari Siti Hafizah AB Hamid nur Nasuha Daud Department of Software Engineering Universiti MalayaKuala Lumpur50603Malaysia

Software-defined networking(SDN)is an innovative paradigm that separates the control and data planes,introducing centralized network *** is increasingly being adopted by Carrier Grade networks,offering enhanced networkmanagement capabilities than those of traditional ***,because SDN is designed to ensure high-level service availability,it faces additional *** of themost critical challenges is ensuring efficient detection and recovery from link failures in the data *** failures can significantly impact network performance and lead to service outages,making resiliency a key concern for the effective adoption of *** the recovery process is intrinsically dependent on timely failure detection,this research surveys and analyzes the current literature on both failure detection and recovery approaches in *** survey provides a critical comparison of existing failure detection techniques,highlighting their advantages and ***,it examines the current failure recovery methods,categorized as either restoration-based or protection-based,and offers a comprehensive comparison of their strengths and ***,future research challenges and directions are discussed to address the shortcomings of existing failure recovery methods.

关键词： Software defined networking failure detection failure recovery restoration protection

A stable Cenozoic geologic time scale is indispensable

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Episodes 2006年第1期29卷 43-45页

作者： amos Salvador Department of Geological Sciences University of Texas at Austin Austin Texas 78712 USA.

A stable, standard geologic time scale is indispensable for the clear and precise communication among geologists; it is a basic tool of geologic work. Considerable progress has been made to achieve such a stable time scale. However, during the last few years several proposals have been made to modify the Cenozoic section of the geologic time scale that threaten to destabilize it. Seven articles published in Episodes since 2000 that could contribute to this destabilization are discussed. They provide excellent examples of the profusion of different terminologies, hierarchies, and stratigraphic relationships that have been proposed： to eliminate the Tertiary and the Quaternary or to raise their rank to suberathems; to extend the Neogene to the present; to make the Quaternary a formal subsystem of the Neogene, or consider it an informal stratigraphic unit; to eliminate the Holocene, and to decouple the base of the Pleistocene from the base of the Quaternary. If adopted, these proposals would cause nothing but great confusion and controversy. They disregard the clear preferences of geologists the world over as reflected by the terminology they have been using for many decades. Common sense would dictate the continued use of this terminology in its current, widely accepted form.

关键词：新生代地质时间比例尺地质工作

Non-Uniform Doo-Sabin Subdivision Surface via Eigen Polygon

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Journal of Systems Science & Complexity 2021年第1期34卷 3-20页

作者： ALAM Md nur LI Xin School of Mathematical Sciences University of Science and Technology of ChinaHefei 230026China

This paper constructs a new non-uniform Doo-Sabin subdivision scheme via eigen *** authors proved that the limit surface is always convergent and is G1 continuous for any valence and any positive knot intervals under a minor assumption, that λ is the second and third eigenvalues of the subdivision matrix. And then, a million of numerical experiments are tested with randomly selecting positive knot intervals, which verify that our new subdivision scheme satisfies the *** this is not true for the other two existing non-uniform Doo-Sabin schemes in Sederberg, et al.(1998), Huang and Wang(2013). In additional, numerical experiments indicate that the quality of the new limit surface can be improved.

关键词： Doo-Sabin non-uniform splines subdivision

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Tolerance and biosorption of copper (Cu) and lead (Pb) by filamentous fungi isolated from a freshwater ecosystem

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Journal of Environmental Sciences 2011年第5期23卷 824-830页

作者： nur Liyana Iskandar nur Ain Izzati Mohd Zainudin Soon Guan Tan Department of Biology Faculty of Science Universiti Putra Malaysia Department of Biology Faculty of ScienceUniversiti Putra Malaysia Department of Cell and Molecular Biology Faculty of Biotechnology and Biomolecular SciencesUniversiti Putra Malaysia

Filamentous fungi are able to accumulate significant amount of metals from their environment. The potential of fungal biomass as agents for biosorption of heavy metals from contaminated sediments is currently receiving attention. In the present study, a total of 41 isolates of filamentous fungi obtained from the sediment of the Langat River, Selangor, Malaysia were screened for their tolerance and uptake capability of copper （Cu） and lead （Pb）. The isolates were identified as Aspergillus niger, A. fumigatus, Trichoderma asperellum, Penicillium simplicissimurn and P. janthinellum. A. niger and P. simplicissimum, were able to survive at 1000 mg/L of Cu（Ⅱ） concentration on Potato Dextrose Agar （PDA） while for Pb, only A. niger survived at 5000 mg/L concentration. The results showed that A. niger, P. simplicissimum and T. asperellum have a better uptake capacity for Pb compared to Cu and the findings indicated promising biosorption of Cu and Pb by these filamentous fungi from aqueous solution. The present study was also determined the maximum removal of Cu（Ⅱ） and Pb（Ⅱ） that was performed by A. niger. The metal removal which occurred at Cu（Ⅱ） 200 mg/L was （20.910 ＋ 0.581） mg/g and at 250 mg/L of PbⅡ） was （54.046 ± 0.328） mg/g.

关键词： biosorption copper lead Aspergillus niger Penicillium simplicissimum Trichoderma asperellum

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