检索结果-南通市图书馆

在线全文

学校读者我要写书评

暂无评论

Editorial

Journal of Rock Mechanics and Geotechnical Engineering 2015年第4期7卷 359-360页

作者： E.T.Brown Golder Associates pty. ltd.

The writer is pleased to have been given this opportunity to offer an Editorial to Issue 4, Volume 7, 2015, of our journal, for the first time. The major focus of this Editorial is on the paper, ＂A theoretical derivation of the Hoek-Brown failure criterion for rock materials＂ by Jianping Zuo, Huihai Liu and Hongtao Li, pub- lished in this Issue. In the following, this paper will be referred to as Zuo et al. （2015）. Using this paper as a vehicle, some comments will be offered on this journal＇s important peer review system.

关键词： rock Editorial

在线全文

学校读者我要写书评

暂无评论

Editorial

Journal of Rock Mechanics and Geotechnical Engineering 2017年第2期9卷 195-196页

作者： E.T. Brown Golder Associates pty. ltd. P.O. Box 1734 Milton QLD 4064 Australia

The Aims and Scope of the Journal of Rock Mechanics and Geotechnical Engineering(JRMGE)indicate that it"is concerned with the latest research achievements in rock mechanics and geotechnical engineering The topics covered by the JRMGE include new theories,new technologies,new methods and experiences,in-situ and laboratory tests,new developments,case studies and timely reviews on selected subjects in rock mechanics and geotechnical engineering."

关键词： AIMS SCOPE MECHANICS

利用多中心合成方法同步合成含N-取代甘氨酸的类肽化合物(英文)

在线全文

学校读者我要写书评

暂无评论

有机化学 1996年第5期16卷 445-449页

作者：刘刚王建新丁振闿军事医学科学院毒物药物研究所北京100850 chiron mimotopes pty. ltd. Clayton Victoria Australia

N-取代甘氨酸聚合体是一类新的聚合体化合物,同多肽相比,N-取代甘氨酸聚合体具有抗酶解稳定性,同时使用市售的伯胺作为构建单元(building block)大大地扩展了天然多肽分子结构的多样性,本文报道了利用多中心多肽合成方法合成了九个含N-... 详细信息

N-取代甘氨酸聚合体是一类新的聚合体化合物,同多肽相比,N-取代甘氨酸聚合体具有抗酶解稳定性,同时使用市售的伯胺作为构建单元(building block)大大地扩展了天然多肽分子结构的多样性,本文报道了利用多中心多肽合成方法合成了九个含N-取代甘氨酸聚合体多肽杂合休,由于此类聚合体具有抗酶的能力,因此可用于蛋白酶抑制剂的研究。

关键词：类肽甘氨酸组合化学多中心多肽抗酶

A holistic examination of the load rating design of longwall shields after more than half a century of mechanised longwall mining

在线全文

学校读者我要写书评

暂无评论

International Journal of Mining Science and Technology 2015年第5期25卷 687-706页

作者： Frith Russell C. Mine Advice pty.ltd.

It is a commonly asked question:how big should the longwall shields be? The answer is a key aspect of a longwall mining feasibility study when the consequences of inadequately rated shields are *** paper addresses this question based on the measured nature of the loading environment in which shields are required to operate,the various geological and geometrical controls of that environment and the various links between their load rating,a range of other relevant shield design factors and the loss event they are required to prevent a major roof collapse on the longwall *** paper concludes that despite the tremendous advances that have been made in shield design and load rating over the past50 years,the same drivers that caused longwall miners of the past to seek improved roof control on the longwall face via the use of ever-higher rated shields,are still as relevant *** at the current time,the limits of the largest available longwall shields have yet to be tested,therefore industry focus for the foreseeable future should possibly be in achieving the maximum level of roof control on the face via their optimum operational use rather than considering further shield rating increases and incurring the inevitable downsides in terms of capital cost and shield weight.

关键词： Longwall genmechanics Longwall face instability Longwall shield design Periodic weighting of massive strata Longwall panel geometry

Visualizing traumatic brain injury:ocular clues for diagnosis and assessment

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第5期20卷 1399-1400页

作者： Morteza Abyadeh Vivek Gupta Yuyi You Joao A.Paulo Mehdi Mirzaei ProGene Technologies pty.ltd SydneyNSWAustralia Department of Clinical Medicine Faculty of MedicineHealth and Human SciencesMacquarie Medical SchoolMacquarie UniversityMacquarie ParkNorth RydeSydneyNSWAustralia Department of Cell Biology Harvard Medical SchoolBostonMAUSA

Traumatic brain injury (TBI) is defined as damage to the brain resulting from an external sudden physical force or shock to the *** is considered a silent public health epidemic causing significant death and disability *** were 64,000 TBI related deaths reported in the USA in 2020,with about US$76 billion in direct and indirect medical costs annually.

关键词： diagnosis ocular injury

Rock engineering design of post-tensioned anchors for dams-A review

在线全文

学校读者我要写书评

暂无评论

岩石力学与工程学报 2015年第1期34卷 1-13页

作者： E.T.Brown Golder Associates pty.ltd.

High-capacity, post-tensioned anchors have found wide-spread use, originally in initial dam design and construction, and more recently in the strengthening and rehabilitation of concrete dams to meet modern design and safety standards. Despite the advances that have been made in rock mechanics and rock engineering during the last 80 years in which post-tensioned anchors have been used in dam engineering, some aspects of the rock engineering design of high-capacity rock anchors for dams have changed relatively little over the last 30 or 40 years. This applies, in particular, to the calculations usually carried out to establish the grouted embedment lengths required for deep, post-tensioned *** calculations usually make simpli fi ed assumptions about the distribution and values of rock e grout interface shear strengths, the shape of the volume of rock likely to be involved in uplift failure under the in fl uence of a system of post-tensioned anchors, and the mechanism of that failure. The resulting designs are generally conservative. It is concluded that these aspects of the rock engineering design of large, posttensioned rock anchors for dams can be significantly improved by making greater use of modern,comprehensive, numerical analyses in conjunction with three-dimensional(3D) models of the rock mass structure, realistic rock and rock mass properties, and the results of prototype anchor tests in the rock mass concerned.

关键词： Dam engineering Post-tensioned anchors Rock engineering design Groutetendon bond Rockegrout bond Rock mass uplift failure

Rock mechanics for design of Brisbane tunnels and implications of recent thinking in relation to rock mass strength

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Rock Mechanics and Geotechnical Engineering 2019年第3期11卷 676-683页

作者： L.B.McQueen A.Purwodihardjo S.V.L.Barrett Golder Associates pty.ltd. 124 Pacific HighwaySt.LeonardsNSW2065Australia Golder Associates pty.ltd. 147 Coronation DriveMiltonQueensland4064Australia Golder Associates pty.ltd. Building 7Botanicca Corporate Park570 e 588 Swan StreetRichmondVictoria3121Australia

This paper explores the potential implications of recent thinking in relation to rock mass strength for future tunnelling projects in Brisbane,Australia,particularly as they are constructed within deep horizons where the in situ stress magnitudes is *** mass failure mechanisms for the current tunnels in Brisbane are generally discontinuity controlled and the potential for stress-induced failure is relatively *** the road tunnels which have been constructed in Brisbane over the last 12 years,the strength of the more massive rock masses for continuum analysis has been estimated by the application of the Hoek-Brown(H-B)failure criterion using the geological strength index(GSI)to determine the H-B parameters mb,s and *** the last few years,alternative approaches to estimating rock mass strength for‘massive to moderately jointed hard rock masses’have been proposed by others,which are built on the work completed by *** and *** in this area over their joint *** paper explores one of these alternative approaches to estimating rock mass strength for one of the geological units(the Brisbane Tuff),which is often encountered in tunnelling projects in *** potential implications of these strength forecasts for future tunnelling projects are discussed along with the additional work which will need to be undertaken to confirm the applicability of such alternative strength criteria for this rock mass.

关键词： Rock mass strength Hoek-Brown(H-B)failure criterion Triaxial testing Brittle failure Brisbane Tuff

CLGA Net:Cross Layer Gated Attention Network for Image Dehazing

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2023年第3期74卷 4667-4684页

作者： Shengchun Wang Baoxuan Huang Tsz Ho Wong Jingui Huang Hong Deng Hunan Normal University Changsha410006China Z-emotion pty.ltd. Victoria3178Australia

In this paper,we propose an end-to-end cross-layer gated attention network(CLGA-Net)to directly restore fog-free *** with the previous dehazing network,the dehazing model presented in this paper uses the smooth cavity convolution and local residual module as the feature extractor,combined with the channel attention mechanism,to better extract the restored features.A large amount of experimental data proves that the defogging model proposed in this paper is superior to previous defogging technologies in terms of structure similarity index(SSIM),peak signal to noise ratio(PSNR)and subjective visual *** order to improve the efficiency of decoding and encoding,we also describe a fusion residualmodule and conduct ablation experiments,which prove that the fusion residual is suitable for the dehazing ***,we use fusion residual as a fixed module for encoding and *** addition,we found that the traditional defogging model based on the U-net network may cause some information losses in *** have achieved effective maintenance of low-level feature information through the cross-layer gating structure that better takes into account global and subtle *** also present the application of our CLGA-Net in challenging scenarios where the best results in both quantity and quality can be *** results indicate that the present cross-layer gating module can be widely used in the same type of network.

关键词： Deep learning dehazing image restoration end to end

Mechanics of rib deformation—Observations and monitoring in Australian coal mines

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

International Journal of Mining Science and Technology 2019年第1期29卷 119-129页

作者： Yvette Heritage SCT Operations pty.ltd

The risk of fatalities from rib failure is still prevalent in the coal mining industry. This risk has prompted further research to be conducted on rib deformation in order to understand the mechanisms of rib failure,with the long-term objective being to improve rib support design. This paper presents the results of ACARP research project C25057, which investigated the mechanics and drivers of rib failure. The results of rib deformation monitoring at three different mines in Australia provide rib deformation characteristics for overburden depths ranging from 160 to 530 m. Monitoring includes deformation during development drivage conditions and during the longwall retreat abutment stress environment. The rib deformation monitoring covered three different seams: the Goonyella Middle Seam, Ulan Seam, and Bulli Seam in the Bowen Basin, Western Coalfield, and Southern Coalfield, respectively. The observed mechanisms driving the rib deformation ranged from bedding shear failure along weak claystone bands to vertical shear fractures to kinematic failures driven by shear failure dilation. The variation in mechanisms of rib failure, together with the seemingly consistent method of rib support design, prompts the question: what exactly is the role of rib support?

关键词： Coal Rib Deformation Monitoring Measurement