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The Special Column of Aquatic Invasive Species Science

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Current Zoology 2011年第6期57卷 816-817页

作者： Gerard van der Velde rob S.E.w. Leuven Guest Editors Radboud University Nijmegen Institute for Water and Wetland Research P.O. Box 9010 6500 GL Nijmegen The Netherlands

we were delighted when Zhi-Yun Jia, Executive Editor of Current Zoology, approached us with a proposal to engage in a special column on invasive species science. Six papers have been written for this special column, all containing new information and approaches in the field of aquatic invasive species science. Each paper has gone through the rigorous peer review process used at Current Zoology, and Zhi-Yun Jia was very helpful by contacting reviewers and improving the manuscripts.

关键词：外来入侵物种科学水生同行评议动物

In-situ stress measurements and stress change monitoring to monitor overburden caving behaviour and hydraulic fracture pre-conditioning

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International Journal of Mining Science and Technology 2016年第1期26卷 103-110页

作者： Puller Jesse w. Mills Ken w. Jeffrey rob G. walker Rick J. Strata Control Technology Wollongong NSW 2500 Australia CSIRO Energy Melbourne. Vic 3000 Australia

A coal mine in New South wales is longwall mining 300 m wide panels at a depth of 160–180 m directly below a 16–20 m thick conglomerate strata. As part of a strategy to use hydraulic fracturing to manage potential windblast and periodic caving hazards associated with these conglomerate strata,the in-situ stresses in the conglomerate were measured using ANZI strain cells and the overcoring method of stress relief. Changes in stress associated with abutment loading and placement of hydraulic fractures were also measured using ANZI strain cells installed from the surface and from underground. Overcore stress measurements have indicated that the vertical stress is the lowest principal stress so that hydraulic fractures placed ahead of mining form horizontally and so provide effective pre-conditioning to promote caving of the conglomerate strata. Monitoring of stress changes in the overburden strata during longwall retreat was undertaken at two different locations at the mine. The monitoring indicated stress changes were evident 150 m ahead of the longwall face and abutment loading reached a maximum increase of about7.5 MPa. The stresses ahead of mining change gradually with distance to the approaching longwall and in a direction consistent with the horizontal in-situ stresses. There was no evidence in the stress change monitoring results to indicate significant cyclical forward abutment loading ahead of the face. The forward abutment load determined from the stress change monitoring is consistent with the weight of overburden strata overhanging the goaf indicated by subsidence monitoring.

关键词： Stress measurementOverburdenHydraulic fracturing Longwall

Computer systems architecture : a networking approach /

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2001年

作者： williams rob

Includes bibliographical references (p. [645]-646) and index.

ISBN: (纸本)0201648598

Includes bibliographical references (p. [645]-646) and index.

关键词： Computer architecture. Computer network architectures.

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Listening /

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Recycling of Aluminum from Fibre Metal Laminates

1987年

作者： Nolasco rob

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Journal of Shanghai Jiaotong university(Science) 2012年第3期17卷 263-267页

作者：祝国梁肖艳萍杨永祥王俊孙宝德 BOOM rob Department of Materials Science and Engineering Delft University of Technology2628 CD DelftThe Netherlands State Key Laboratory of Metal Matrix Composites Shanghai Jiaotong University Department of Metallurgical Engineering Anhui University of Technology Institute of Ferrous Metallurgy Northeastern University

Recycling of aluminum alloy scrap obtained from delaminated fibre metal laminates （FMLs） was studied through high temperature refining in the presence of a salt flux. The aluminum alloy scrap contains approximately mass fraction w（Cu） = 4.4%, w（Mg） = 1.1% and w（Mn） = 0.6% （2024 aluminum alloy）. The main objective of this research is to obtain a high metal yield, while maintaining its original alloy compositions. The work focuses on the metal yield and quality of recycled A1 alloy under different refining conditions. The NaCI-KC1 salt system was selected as the major components of flux in the A1 alloy recycling. Two different flux compositions were employed at NaC1 to KC1 mass ratios of 44：56 and 70：30 respectively, based on either the euteetic composition, or the European preference. Different additives were introduced into the NaCI-KC1 system to study the effect of flux component on recycling result. Although burning and oxidation loss of the alloying elements during re-melting and refining take place as the drawbacks of conventional refining process, the problems can be solved to a large extent by using an appropriate salt flux. Experimental results indicate that Mg in the alloy gets lost when adding cryolite in the NaCI-KC1 salt system, though the metal yield can reach as high as 98%. However, by adding w（MgF2） = 5% into the NaCI-KC1 salt system （instead of using cryolite） all alloying elements were well controlled to its original composition with a metal yield of almost 98%.

关键词： Al-Cu-Mg alloy 2024 A1 recycling cryolite salt flux

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UNIX程序开发环境

UNIX程序开发环境

Cytosolic Ca^2＋ Signals Enhance the Vacuolar Ion Conductivity of Bulging Arabidopsis Root Hair Cells

1985年

作者： Brian w.Kernighan rob Pike 平镇中何爱芳编译

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Molecular Plant 2015年第11期8卷 1665-1674页

作者： Yi wang Julian Dindas Florian Rienmuller Melanie Krebs Rainer waadt Karin Schumacher wei-Hua wu Rainer Hedrichl M. rob G. Roelfsema Molecular Plant Physiology and Biophysics Julius-von-Sachs Institute for Biosciences Biocenter Werzburg University Julius-von-Sachs-Platz 2 97082Wurzburg Germany State Key Laboratory of Plant Physiology and Biochemistry (SKLPPB) College of Biological Sciences China Agricultural University Beijing 100193 China Centre for Organismal Studies Developmental Biology of Plants University of Heidelberg Im Neuenheimer Feld 230 69120 Heidelberg Germany College of Science King Saud University (KSU) Riyadh Saudi Arabia

Plant cell expansion depends on the uptake of solutes across the plasma membrane and their storage within the vacuole. In contrast to the well-studied plasma membrane, little is known about the regulation of ion transport at the vacuolar membrane. we therefore established an experimental approach to study vacuolar ion transport in intact Arabidopsis root cells, with multi-barreled microelectrodes. The subcellular position of electrodes was detected by imaging current-injected fluorescent dyes. Comparison of measurements with electrodes in the cytosol and vacuole revealed an average vacuolar membrane potential of -31 inV. Voltage clamp recordings of single vacuoles resolved the activity of voltage-independent and slowly deactivating channels. In bulging root hairs that express the Ca2＋ sensor R-GECO1, rapid elevation of the cytosolic Ca^2＋ concentration was observed, after impalement with microelectrodes, or injection of the Ca^2＋ chelator BAPTA. Elevation of the cytosolic Ca^2＋ level stimulated the activity of voltage- independent channels in the vacuolar membrane. Likewise, the vacuolar ion conductance was enhanced during a sudden increase of the cytosolic Ca^2＋ level in cells injected with fluorescent Ca^2＋ indicator FURA-2. These data thus show that cytosolic Ca^2＋ signals can rapidly activate vacuolar ion channels, which may prevent rupture of the vacuolar membrane, when facing mechanical forces.

关键词： electrophysiology ion channels calcium signaling/transport fluorescence imaging Arabidopsis,vacuolar membrane

Identification and Cloning of Resistance Gene Analogues (RGAs) Encoding NBS-LRR Proteins from Gossypium arboreum L.

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棉花学报 2008年第S1期20卷 42-页

作者： AZHAR Muhammad Tehseen BASHIR Aftab BRIDDON rob w MANSOOR Shahid Plant Biotechnology Division National Institute for Biotechnology and Genetic Engineering(NIBGE) P O Box.577 Faisalabad Pakistan

Plants have developed a complicated defense mechanism during evolution to resist the harmful pathogens they *** mechanism involves the interaction of the plant resistance(R)

关键词： NBS Encoding NBS-LRR Proteins from Gossypium arboreum L Identification and Cloning of Resistance Gene Analogues LRR RGAs

Structure of unliganded membrane-proxima domains FN4-FN5-FN6 of DCC

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Protein & Cell 2017年第9期8卷 701-705页

作者： Lorenzo I. Finci Jie Zhang Xiaqin Sun robert G. Smock rob Meijers Yan Zhang Junyu Xiao Jia-huai wang State Key Laboratory of Biomembrane and Membrane Biotechnology College of Life Sciences Peking University Dana-Farber Cancer Institute Harvard Medical School Boston MA 02215 USA European Molecular Biology Laboratory (EMBL) Hamburg Out-station Hamburg Germany PKU-IDG/McGovern Institute for Brain Research Peking University Beijing 100871 China State Key Laboratory of Protein and Plant Gene Research School of Life Sciences and Peking-Tsinghua Center for Life Sciences Peking University Beijing 100871 China Beijing Advanced Innovation Center for Struc tural Biology Tsinghua-Peking Center for Life Sciences School of Life Sciences and School of Medicine Tsinghua University Beijing 100084 China The Francis Crick Institute London NW12BE UK

Dear Editor, Deleted in colorectal cancer （DCC） is a single pass transmembrane glycoprotein that was originally identified in humans as a candidate tumor suppressor （Fearon et al., 1990）. DCC belongs to the immunoglobulin superfamily, and the extracellular fragment is composed of four immunoglobu- lin-like （Ig-like） domains followed by six fibronectin type III （FN） domains. DCC plays a pivotal role in axon guidance by mediating a combination of attractive and repulsive effects through interactions with the diffusible guidance cue,

关键词： AXON GUIDANCE RECEPTOR DCC NETRIN-1 ASSOCIATION MECHANISM INSIGHT DRAXIN GENE