bluuebunny/crossref_metadata_2025_split huggingface dataset:
Overexpression of a directed mutant of 14-3-3ω in Arabidopsis leaves affects phosphorylation and protein content of nitrate reductaseThis paper is one of a selection published in a Special Issue comprising papers presented at the 50th Annual Meeting of the Canadian Society of Plant Physiologists (CSPP) held at the University of Ottawa, Ontario, in June 2008.
Authors: Oh Man-Ho , Huber Joan L. , Shen Wei , Athwal Gurdeep S. , Wu Xia , Huber Steven C. 
Published: August 2009

The 14-3-3 family of proteins are highly conserved signaling proteins in eukaryotes that bind to their client proteins, usually through specific phosphorylated target sequences. While the 14-3-3 proteins are thought to interact with a wide array of cellular proteins, there have been few studies addressing the in-vivo role of 14-3-3. As one approach to study this in-vivo role, we generated transgenic Arabidopsis plants constitutively overexpressing a directed mutant of 14-3-3 isoform ω that inhibits phosphorylated nitrate reductase (pNR) in a largely divalent-cation-independent manner in vitro. The transgenic plants had increased relative phosphorylation of NR at the regulatory Ser-534 site and decreased NR activity measured in the presence of 5 mmol·L–1 MgCl2 relative to nontransgenic plants. In addition, total NR protein was increased and the protein half-life was increased about two-fold. Two-dimensional difference gel electrophoresis analysis of proteins extracted from leaves of plants expressing the mutant 14-3-3 identified numerous cellular proteins that were altered in abundance. In particular, several β-glucosidase and glutathione S-transferase isoforms were decreased in abundance relative to wild type plants suggesting a possible alteration in stress or defense responses.
“Genealogy” of plant physiology research in Canada and the founding of the Canadian Society of Plant PhysiologistsThis paper is one of a selection published in a Special Issue comprising papers presented at the 50th Annual Meeting of the Canadian Society of Plant Physiologists (CSPP) held at the University of Ottawa, Ontario, in June 2008.
Authors: Nozzolillo Constance 
Published: August 2009

Two men were leaders in the development of plant physiology research in Canada: Professor G.W. Scarth at McGill University and Professor G.H. Duff at the University of Toronto. The latter was the driving force behind the formation of the CSPP in 1958. The contributions of these two men and their graduate students to plant physiology research in Canada are briefly summarized.
Hypobaria, hypoxia, and light affect gas exchange and the CO2compensation and saturation points of lettuce (Lactuca sativa)This paper is one of a selection published in a Special Issue comprising papers presented at the 50th Annual Meeting of the Canadian Society of Plant Physiologists (CSPP) held at the University of Ottawa, Ontario, in June 2008.
Authors: He Chuanjiu , Davies Fred T. , Lacey Ronald E. 
Published: August 2009

There are important engineering and crop production advantages in growing plants under hypobaric (reduced atmospheric pressure) conditions for extraterrestrial base or spaceflight environments. The objectives of this research were to determine the influence of hypobaria and reduced partial pressure of oxygen (pO2) (hypoxia) under low and high light irradiance on carbon dioxide (CO2) assimilation (CA), dark-period respiration (DPR), and the CO2compensation and CO2saturation points of lettuce (Lactuca sativa L. ‘Buttercrunch’). Plants were grown under variable total gas pressures [25 and 101 kPa (ambient)] at 6, 12, or 21 kPa pO2(approximately the partial pressure in air at normal pressure). Light irradiance at canopy level of the low-pressure plant growth system (LPPG) was at 240 (low) or 600 (high) µmol·m–2·s–1. While hypobaria (25 kPa) had no effect on CAor the CO2compensation point, it reduced the DPR and the CO2saturation point, and increased the CA / DPR ratio. Hypoxia (6 kPa pO2) and low light reduced CA, DPR, and the CA / DPR ratio. Hypoxia decreased the CO2compensation point regardless of total pressure. Hypoxia also decreased the the CO2saturation point of ambient-pressure plants, but had no effect on hypobaric plants. While low light reduced the CO2saturation point, it increased the CO2compensation point, compared with high-light plants. The results show that hypobaric conditions of 25 kPa do not adversely affect gas exchange compared with ambient-pressure plants, and may be advantageous during hypoxic stress.
Geochemistry, geochronology, and geodynamic setting of Ni–Cu ± PGE mineral prospects hosted by mafic and ultramafic intrusions in the Portneuf–Mauricie Domain, Grenville Province, QuebecGéologie Québec Contribution 8439-2008-2009-5. Geological Survey of Canada Contribution 20080511.
Authors: Sappin A.-A. , Constantin M. , Clark T. , van Breemen O. 
Published: August 2009

The Portneuf–Mauricie Domain in the Grenville Province consists of the Montauban group rocks (1.45 Ga), intruded by the La Bostonnais complex plutons (1.40–1.37 Ga). This assemblage was formed in a magmatic arc setting. The sequence was intruded by mafic–ultramafic tholeiitic plutons, some of which host Ni–Cu ± PGE (platinum group element) prospects. U–Pb zircon ages determined from these plutons indicate that the mineralized intrusions were emplaced between 1.40 and 1.39 Ga and that they are coeval with the La Bostonnais complex plutons. The Ni–Cu ± PGE-bearing intrusions have mature island-arc trace element signatures, with strong chemical evidence for differentiation (Mg# and Cr content; MgO and TiO2 contents) and crustal contamination (enrichments in K2O, Rb, Ba, Th, and light rare-earth elements; Th/Yb and Ta/Yb ratios). However, one intrusion displays a back-arc trace element signature associated with evidence for weak crust assimilation. The evolution of the Portneuf–Mauricie Domain is interpreted as follows: (1) 1.45 Ga — Northwesterly directed Andean-type subduction beneath the Laurentian craton margin. Furthermore, northwest-dipping intraoceanic subduction offshore from the continent formed the Montauban island arc. (2) 1.45 to 1.40 Ga — Andean-type subduction led to the formation of a back-arc basin behind the Montauban arc. (3) 1.40 Ga — Emplacement of the La Bostonnais complex plutons, some hosting Ni–Cu ± PGE prospects, into the Montauban arc. (4) 1.39 Ga — Subduction beneath Laurentia led to arc–continent collision and to closure of the back-arc basin. Intrusion of the Ni–Cu ± PGE-bearing plutons ceased. (5) 1.37 Ga — Intrusion of all La Bostonnais complex plutons ceased.
A combined telemetry – tag return approach to estimate fishing and natural mortality rates of an estuarine fish
Authors: Bacheler Nathan M. , Buckel Jeffrey A. , Hightower Joseph E. , Paramore Lee M. , Pollock Kenneth H. 
Published: August 2009

A joint analysis of tag return and telemetry data should improve estimates of mortality rates for exploited fishes; however, the combined approach has thus far only been tested in terrestrial systems. We tagged subadult red drum ( Sciaenops ocellatus ) with conventional tags and ultrasonic transmitters over 3 years in coastal North Carolina, USA, to test the efficacy of the combined telemetry – tag return approach. There was a strong seasonal pattern to monthly fishing mortality rate (F) estimates from both conventional and telemetry tags; highest F values occurred in fall months and lowest levels occurred during winter. Although monthly F values were similar in pattern and magnitude between conventional tagging and telemetry, information on F in the combined model came primarily from conventional tags. The estimated natural mortality rate (M) in the combined model was low (estimated annual rate ± standard error: 0.04 ± 0.04) and was based primarily upon the telemetry approach. Using high-reward tagging, we estimated different tag reporting rates for state agency and university tagging programs. The combined telemetry – tag return approach can be an effective approach for estimating F and M as long as several key assumptions of the model are met.
Model for predicting displacement-dependent lateral earth pressure
Authors: Mei Guoxiong , Chen Qiming , Song Linhui 
Published: August 2009

A model for predicting displacement-dependent lateral earth pressure was proposed based on an earth pressure – displacement relationship commonly observed in practice. The proposed model is a monotonically increasing and bounded function, with an inflection point at the displacement of s = 0 at which the earth pressure changes from the intermediate active state (the state between active and at-rest) to the intermediate passive state (the state between at-rest and passive). The proposed model can predict the relationship between earth pressure and retaining structure movement for any condition intermediate to the active and passive states, which was verified by the experimental data reported in published literature. The predicted lateral earth pressure coefficients are in good agreement with the test results of model tests reported in the literature.
A test of various computational solvation models on a set of “difficult” organic compounds
Authors: Guthrie J. Peter , Povar Igor 
Published: August 2009

Various dielectric continuum models in Gaussian 03, based on the SCRF approach, PCM, CPCM, DPCM, IEFPCM, IPCM, and SCIPCM, have been tested on a set of 54 highly polar, generally polyfunctional compounds for which experimental solvation energies are available. These compounds span a range of 13 kcal/mol in ΔGt. The root-mean-square (RMS) errors for the full set of compounds range from 2.48 for DPCM to 1.77 for IPCM. For each method, classes of compounds which were not handled well could be identified. If these classes of compounds were omitted, the performance improved, and ranged from 1.58 (PCM, 39 compounds) to 1.02 (IPCM, 42 compounds). Models in the PCM family (PCM, CPCM, DPCM, and IEFPCM) with the recommended UAHF or UAKS sets of radii rely on a highly parameterized definition of the solvent cavity. Where this parameterization was inadequate, the calculated solvation energies were less reliable. This has been demonstrated by devising a new parameterization for PCM and halogen compounds, which markedly improves performance for polyhalogen compounds. The effective radius for the portion of the cavity centered on a halogen atom was assumed to be linear in the electron-withdrawing or -donating properties of the rest of the molecule as measured by Hammett σ (for halogens on aromatic rings) or Taft σ* (for halogens on aliphatic carbons). This new parameterization for PCM was tested on a set of 45 aliphatic and 22 aromatic polyhalogen compounds and shown to do well. IPCM, which was already the best of the methods in Gaussian, can be considerably improved by a parameterization to allow for cavitation, dispersion, and hydrogen bonding. A large set of compounds was used for the parameterization to have multiple examples for each parameter and as far as possible to have molecules with multiple instances of each structural feature. In the end, 15 parameters were found to be defined by the data for 241 compounds. With this parameter set, the RMS error for the set used for fitting was 0.81 kcal/mol, and the RMS error for the original set of 54 compounds was 0.85. With this new parameterization, IPCM is clearly the best of the methods available in Gaussian 03.
The hydration and alteration of perlite and rhyolite
Authors: Denton J.S. , Tuffen H. , Gilbert J.S. , Odling N. 
Published: August 2009

Abstract:The volatile concentrations and thermal characteristics of hydrothermally altered rhyolitic deposits erupted under Icelandic glaciers have been studied by combined differential scanning calorimetry–thermogravimetric analysis–mass spectrometry (DSC–TGA–MS) and X-ray diffraction (XRD). Samples range from pristine obsidians to strongly perlitized and altered fragmental deposits. Four types of samples are determined to have notable differences in total volatile concentrations: obsidians (0.44–3.04 wt%), perlites (2.15–8.15 wt%), obsidian-breccias (8.49–9.41 wt%) and hyaloclastites (3.23–7.78 wt%). DSC–TGA–MS and textural data indicate that the volatile concentration of the perlitic samples increases as the amount of perlitization increases. XRD data show that the volatile-rich samples are rich in the low-temperature zeolite minerals heulandite and mordenite. The temperature at which volatile exsolution occurs is shown to decrease as the volatile concentration increases, reflecting the speciation of water as well as zeolite mineral growth.Supplementary material:Detailed grain-size fraction analysis data in table and histogram form are available athttp://www.geolsoc.org.uk/SUP18366.
Evolution and chronology of the Pangong Metamorphic Complex adjacent to the Karakoram Fault, Ladakh: constraints from thermobarometry, metamorphic modelling and U–Pb geochronology
Authors: Streule M.J. , Phillips R.J. , Searle M.P. , Waters D.J. , Horstwood M.S.A. 
Published: August 2009

Abstract:

Sillimanite- and staurolite-grade metamorphic rocks exhumed along the Pangong fault, the NE branch of the right-lateral Karakoram strike-slip fault in northern Ladakh, NW India, show multiple episodes of metamorphism and fabric development. Debate has centred on whether these metamorphic rocks were formed as a result of shear heating during strike-slip faulting, or whether they are exhumed earlier metamorphic rocks unrelated to movement on the Karakoram fault. Here we constrain the burial and exhumation history of the Pangong Metamorphic Complex combining the pressure–temperature evolution with accessory phase geochronology. Sillimanite-grade metamorphism in graphitic pelites was superseded by the preserved
P
–
T
conditions of a Bt + Ms + St + Grt + Qtz + Fsp assemblage at 585–605 °C and 6.05–7.25 kbar, equivalent to
c
. 20–25 km of burial. Laser ablation monazite U–Pb geochronology reveals that sillimanite-grade metamorphism occurred at 108.0 ± 0.6 Ma in rocks immediately adjacent to the Pangong strand of the Karakoram fault, implying that most metamorphic rocks along the Karakoram fault were not formed by shear heating during Miocene strike-slip faulting. This age correlates closely with the ages of the Hunza granite–granodiorite batholith, and the K2 orthogneiss in northern Pakistan, and confirms that some high-grade metamorphism occurred before collision and accretion of the Kohistan arc and the Indian plate to Asia; protracted high-grade metamorphism, and accompanying crustal thickening lasted at least 100 Ma along the South Asian plate margin. Our
P
–
T
and geochronology results also demonstrate the continuity of Cretaceous metamorphism across the Karakoram fault.
Petrophysically determined lithofacies at the Nankai Trough Accretionary Prism: NanTroSEIZE, IODP Expedition 314
Authors: Tudge J. , Lovell M.A. , Davies S.J. , Harvey P.K. , Saito S. ,   Expedition 314 Scientists
Published: August 2009

Abstract:
Characterizing the physical properties and identifying boundaries within active accretionary prisms is necessary in understanding their behaviour and recent movement. In such unstable conditions core recovery is not always reliable, especially around fault zones. Integrated Ocean Drilling Program (IODP) Expedition 314 was the first stage of the Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE), and used logging-while-drilling (LWD) technology to record continuous physical property data. We use iterative non-hierarchical cluster analysis (INCA) to quantitatively define the characteristics of the slope sediments and sediments within the accretionary prism at Sites C0001 and C0004. A new and detailed log-based lithostratigraphy is developed, and positions of major boundaries, defined by 3D seismic profiles and initial interpretation of log responses, are refined. The results produce clusters that clearly distinguish the slope sediments and characterize formations within the accretionary prism. Boundaries that correlate to the seismic-defined unconformity between the slope sediments and the accretionary prism, and a boundary within the accretionary prism that corresponds to a megasplay fault previously unresolved by log analysis and borehole images, are identified. Our study demonstrates that INCA analysis of LWD data can accurately define boundaries and characterize sediments in environments where core recovery may be incomplete.
Fold patterns and multilayer rheology of the Lurestan Province, Zagros Simply Folded Belt (Iran)
Authors: Casciello E. , Vergés J. , Saura E. , Casini G. , Fernández N. , Blanc E. , Homke S. , Hunt D.W. 
Published: August 2009

Abstract:
Anticlines of the Lurestan Province in the Zagros fold–thrust belt have been studied by integrating field-based analysis with the use of high-resolution satellite images and data available from the literature. The distribution of folds in the southeastern Lurestan Province, expressed in terms of axial length and wavelength distribution, shows a direct link with the characteristics of the sedimentary multilayer in which the folds developed. Within the carbonate deposits of the Late Cretaceous Bangestan Group the transition from pelagic to neritic facies determines a threefold increase in anticline spacing and promotes the development of thrust structures in the forelimb of anticlines. The Oligocene–Miocene Shahbazan–Asmari unit folds harmonically with the Bangestan Group, except in the areas where the Palaeogene deposits interposed between the two units exceed 1300 m of thickness. In these areas the Shahbazan–Asmari carbonates display short-wavelength folds indicating a complete decoupling from the underlying folds of the Bangestan Group. It is suggested that this decoupling occurs because the summed thickness of the incompetent units separating the two carbonate units exceeds the extension of the zone of effective contact strain of the Bangestan Group folds.
A critical analysis of the structure and tectonic significance of rift-oblique lineaments (‘transfer zones') in the Mesozoic–Cenozoic succession of the Faroe–Shetland Basin, NE Atlantic margin
Authors: Moy D.J. , Imber J. 
Published: August 2009

Abstract:
NW–SE-trending rift-oblique lineaments (‘transfer zones') occur along the length of the NE Atlantic margin. Previous workers have suggested that these lineaments played an important role in providing conduits and/or barriers to sedimentation during the Cretaceous and Palaeocene; it has also been suggested that they were active as discrete, basin-wide strike-slip faults. This study uses a well-calibrated 3D seismic survey of regional extent to critically assess the structural and stratigraphic evidence for three rift-oblique lineaments in the UK sector of the Faroe–Shetland Basin (Victory, Clair and Judd Lineaments). Structures previously attributed to basin-wide strike-slip deformation can be more simply explained as igneous intrusions, hydrothermal vent complexes, gas chimneys and/or faults that transfer extensional strain between en echelon rift segments. There is little evidence to suggest that activity along discrete, basin-wide lineaments controlled Palaeocene sedimentation within the Faroe–Shetland Basin. Rather, sediment transport and deposition at this time are likely to have been controlled by along- and across-strike variations in the magnitude of thermal subsidence, which in turn reflect the 3D nature of the underlying Mesozoic rift architecture.
Rocky coast: geological constraints for hazard assessment
Authors: Violante Crescenzo 
Published: August 2009

Abstract
Geological hazard along rocky coasts is basically associated with processes of rapid sediment transfers. Massive transport of rock, regolith, sedimentary cover and soil occur episodically, accounting for cliff recession, sudden increase in solid load in short coastal rivers, and flank collapse of volcanic structures and rocky slopes. In geohazard terms, rocky coasts operate as transfer zones that deliver sediment directly from slopes to the coast and open sea at intermittent time intervals. Erosion and transport of material causes major physical changes and exposes coastal communities and human activity to hazard with potential damage to property and infrastructure, and loss of life. This paper focuses on geological processes that regulate rapid sediment transfers in rocky coastal areas, with examples drawn mostly from the Italian coasts. It is stressed that proper comprehension of coastal mass wasting hazard has to include marine and historical investigations. As a main delivery area, the submerged part of rocky coasts preserves reliable sedimentary records of past geological events occurring on land, which are often only partly detectable along subaerial rocky slopes and commonly reported in historical sources.
Insights into flood-dominated fan-deltas: very high-resolution seismic examples off the Amalfi cliffed coasts, eastern Tyrrhenian Sea
Authors: Sacchi M. , Molisso F. , Violante C. , Esposito E. , Insinga D. , Lubritto C. , Porfido S. , Tóth T. 
Published: August 2009

Abstract

A high-resolution (IKB-Seistec) seismic survey calibrated with gravity-core data, off the Amalfi coast, a rocky coastal area on the southern side of the Sorrento Peninsula (Italy), documents the internal stratigraphic architecture of a series of small fan-deltas that develop at the mouth of major bedrock streams. The fan-delta system mostly postdates the Plinian eruption of Vesuvius of
ad
79 and displays various phases of development associated with periods of high sediment supply from the adjacent river basins. During these periods landscape-mantling loose pyroclastic deposits (mostly air-fall tephra from Vesuvius) were quickly eroded and delivered to the continental shelf by sheet wash and flash flood events. Depositional processes on the foresets were dominated by sediment gravity flows originating from hyperpycnal river flow and pyroclastic fall deposits. This in turn created favourable conditions for sea-floor instability, soft sediment failure, slumping and sliding, which characterize the deltaic stratigraphic architecture. The intermittently increased sediment yield during the various phases of the evolution of the fan-delta system was probably influenced also by the morphoclimatic regime. This may have resulted in varying rates of progradation of the delta foresets, tentatively correlated with the main climatic oscillations of the last 2000 years. The Amalfi fan-delta system represents a small-scale analogue for larger flood-dominated fan-deltas of the world and may be regarded as a useful example for a better understanding of inner-shelf, mixed siliciclastic–volcaniclastic fan-delta systems in the stratigraphic record.
Catastrophic landslides off Ischia volcanic island (Italy) during prehistory
Authors: de Alteriis G. , Violante C. 
Published: August 2009

Abstract

Generally the evaluation of the geological hazards from active volcanoes chiefly concerns the prediction of eruptions whereas less attention is generally paid to other volcanic-related phenomena, such as avalanching–landsliding. This is the case for Ischia (Italy), an active volcanic complex, whose collapse behaviour is only now being evaluated and recognized following extensive marine geophysical and geological investigations. The island of Ischia represents the emerged section of a larger east–west-trending volcanic ridge. The central sector of the island, Mt. Epomeo, has risen to at least 800 m above sea level (a.s.l.) in the past
c
. 30 ka, at an average rate of 20 mm a
−1
. The major consequence of such volcano-tectonic uplift includes either sudden collapses, with attendant debris avalanches, or other mass movements in the form of mud-debris flows, debris slides and rock-falls, all radiating out from Mt. Epomeo and most of them entering the sea. During prehistoric times the island of Ischia underwent major catastrophic collapses resulting in debris avalanche deposits of >1 km
3
to <0.5 km
3
that have been recognized offshore both NW and south of the island. This study provides possible scenarios for the emplacement of these deposits, with particular reference to the resulting landslide-related tsunami hazard.