bluuebunny/crossref_metadata_2025_split huggingface dataset:
Testing the validity of organic and inorganic thermal indicators in different tectonic settings from continental subduction to collision: the case history of the Calabria–Lucania border (southern Apennines, Italy)
Authors: Corrado S. , Invernizzi C. , Aldega L. , D'Errico M. , Di Leo P. , Mazzoli S. , Zattin M. 
Published: August 2010

Abstract:

This paper investigates the applicability of organic and inorganic thermal parameters in a range of thermal conditions, from diagenesis to epizone, and in HP–LT settings within the framework of continental subduction and exhumation in the southern Apennines, where independent thermobarometric constraints are available. Two juxtaposed tectonic units, the HP–LT Lungro–Verbicaro Unit (in the hanging wall) and the non-metamorphic Pollino–Ciagola Unit (in the footwall) have been analysed. For the Lungro–Verbicaro Unit, clay mineral thermal parameters and vitrinite reflectance underestimate metamorphic conditions (constrained by petrology), suggesting that, in relatively HP units, these indicators are ‘retarded' and strongly depend on
P
–
T
evolution through time. On the other hand, the K-white mica
b
cell dimension provides a robust estimate of peak pressure. Fluid inclusion textures indicate a fast isothermal decompression during exhumation. Two-phase inclusions from early stage syntectonic veins were trapped after isothermal exhumation at a pressure of 0.3 GPa. For the Pollino–Ciagola Unit, the correlation of analysed parameters effectively unravels the thermal evolution, with maximum palaeotemperatures of
c
. 150 °C. Apatite fission tracks provide details of the final stages of exhumation, indicating that both units were coherently exhumed in the Late Miocene, following the tectonic emplacement of the Lungro–Verbicaro Unit on top of the Pollino–Ciagola Unit.

Supplementary material:

X-ray diffraction data (whole-rock composition, quantitative analysis of the <2 μm grain-size fraction, mica polytypes, illite content in mixed layer illite–smectite (I–S), Kübler and Árkai data, and
b
cell dimension) are available at
http://www.geolsoc.org.uk/SUP18416
.
Pb–Pb age, stable isotope and chemical composition of Archaean magnesite, Barberton Greenstone Belt, South Africa
Authors: Toulkeridis T. , Peucker-Ehrenbrink B. , Clauer N. , Kröner A. , Schidlowski M. , Todt W. 
Published: August 2010

Abstract:

Trace-element, carbon, oxygen and lead-isotope analyses were carried out to determine the formation mode and crystallization age of magnesite from the Budd ultramafic complex of the Archaean Barberton Greenstone Belt, South Africa. Its significantly high Ti contents probably relate to a soluble Ti-rich accessory mineral, probably dissolved during magnesite precipitation. Primitive mantle-normalized REE patterns of the magnesite show negative Ce and Eu anomalies induced by two events: (1) the Eu anomaly indicates reducing conditions probably induced by the emplacement of the ultramafic source rock; (2) the Ce anomaly implies oxidizing conditions, probably during a hydrothermal event that favoured the precipitation of magnesite in veins of the rock. This Ce anomaly is among the oldest in Earth history. Negative δ
13
C (−2.9 to −3.3‰ PDB) and high δ
18
O (30.5–31.2‰ SMOW) suggest low-temperature precipitation in a near-surface Kraubath-type epithermal system. The magnesite contains considerable amounts of radiogenic lead (
206
Pb/
204
Pb is 125.5–153.7 and
207
Pb/
204
Pb is 41.3–47.7). The resulting Pb–Pb age of 3043 ± 59 Ma is interpreted as dating a hydrothermal event related to the extensive plutonism episode that has been reported in the Barberton area at about 3.1 Ga. Previous models that proposed formation of the magnesite under recent climatic conditions can be discarded.
Milankovitch-scale palynological turnover across the Triassic–Jurassic transition at St. Audrie's Bay, SW UK
Authors: Bonis Nina R. , Ruhl Micha , Kürschner Wolfram M. 
Published: August 2010

Abstract:
A high-resolution palynological study of the Triassic–Jurassic boundary in the St. Audrie's Bay section revealed a palynofloral transition interval with four pronounced spore peaks in the Lilstock Formation. Regular cyclic increases in palynomorph concentrations can be linked with periods of increased runoff, and correspond to the orbital eccentricity cycle. Spore peaks can be related to precession-induced variations in monsoon strength. An implication is that the initial carbon isotope excursion lasted for at least 20 ka. Emergence during deposition of the Cotham Member had an influence on one of the peaks, which is dominated by spore-producing pioneer plants (e.g. horsetails and liverworts). There is no compelling evidence of a global end-Triassic spore spike that, by analogy with the K–T boundary fern spike, could be related to a catastrophic mass extinction event. Climate change is a more plausible mechanism to explain the increased amount of spores.

Supplementary material:

An alphabetical list of palynomorphs identified in the St. Audrie's Bay section is available at
http://www.geolsoc.org.uk/SUP18406
.
A Laurentian provenance for the Dalradian rocks of north Mayo, Ireland, and evidence for an original basement–cover contact with the underlying Annagh Gneiss Complex
Authors: McAteer Claire A. , Daly J.Stephen , Flowerdew Michael J. , Whitehouse Martin J. , Kirkland Chris L. 
Published: August 2010

Abstract:

Metasediments of the early Dalradian Grampian Group (Erris Group) and probable equivalents (Inishkea Division) structurally overlie Palaeoproterozoic to Neoproterozoic Annagh Gneiss Complex orthogneisses in NW Mayo, Ireland. Sm–Nd isotopic data suggest a Palaeoproterozoic source for the metasediments. K-feldspar and granitoid clasts from the Doonamo Formation, Erris Group, record U–Pb zircon ages of
c
. 1740 Ma and
c
. 980 Ma, respectively. These ages are within error of the
c
. 1730–1750 Ma Mullet gneisses and
c
. 990 Ma Grenvillian migmatitic leucosomes in the underlying Annagh Gneiss Complex. U–Pb detrital zircon data reveal that the Erris Group was deposited after
c
. 955 Ma, with predominant input from
c
. 1640,
c
. 1500 and
c
. 990 Ma interpreted Laurentian sources (Labradorian, Pinwarian and Grenvillian terranes, respectively). Limited detrital zircon data from the Inishkea Division yield similarly aged detritus and a tentative maximum depositional age of
c
. 1005 Ma. Correlation of both sequences with the Scottish Dalradian Grampian Group is considered valid based on detrital zircon U–Pb and whole-rock Sm–Nd data. The clast ages support the hypothesis that the Dalradian unconformably overlies the Annagh Gneiss Complex in north Mayo, whereas the detrital zircon data imply more distal Laurentian sources. Dalradian deposition is thereby tied to the margins of Laurentia.

Supplementary material:

U–Pb zircon (secondary ion mass spectrometry) data and descriptions of dated zircon grains are available at
http://www.geolsoc.org.uk/SUP18414
.
Constraining the post-emplacement evolution of the Hebridean Igneous Province (HIP) using low-temperature thermochronology: how long has the HIP been cool?
Authors: Dobson Katherine J. , Stuart Finlay M. , Dempster Tim J. 
Published: August 2010

Abstract:

The thermal history of the Hebridean Igneous Province has been determined through the application of low-temperature thermochronology to the four central complexes in the province. The zircon (U–Th)/He age (59.4 ± 3.3 Ma, 1σ,
n
= 18) and the ages from each complex (60.7 ± 2.3 Ma for Skye; 58.0 ± 0.4 Ma for Mull; 55.9 ± 3.2 Ma for Ardnamurchan; 55.6 ± 2.7 Ma for Rum) are indistinguishable from the crystallization ages. Apatite fission-track ages (61.2–57.2 Ma, mean of 59.3 ± 3.4 Ma) from the major plutonic units also overlap crystallization ages, implying that on a regional scale the Hebridean Igneous Province cooled rapidly to near-surface temperatures immediately after emplacement. However, apatite fission-track ages and track lengths and apatite (U–Th)/He ages from some small-volume intrusions in the Skye and Rum central complexes identify localized mid-Eocene (45–47 Ma) cooling. Forward and inverse modelling suggests a discrete heating–cooling event at
c
. 47 Ma, which may have been caused by structurally controlled localized advection of heat above shallow emplacement. This is the first suggestion of Eocene magmatism in the Hebridean Igneous Province.
Redistribution of the lithosphere deformation by the emplacement of underplated mafic bodies: implications for microcontinent formation
Authors: Yamasaki Tadashi , Gernigon Laurent 
Published: August 2010

Abstract:
Sedimentary basin migration and microcontinent formation could be the result of deformation redistribution, in which the emplacement of an underplated mafic body (UPMB) may play an important role. In this study, a 2D finite-element model is used to examine the redistribution of the deformation that can be triggered by a UPMB. It is shown that three modes of deformation redistribution can exist: (1) a shift-completed mode where the deformation is completely redistributed into the newly weakened region; (2) a transition mode where the deformation is redistributed, but extension is accommodated by thinning in both regions; (3) a shift-failed mode where the deformation is not redistributed. Whether or not the deformation is redistributed depends on the configuration of the UPMB and on the initial rheological heterogeneity in the initially deformed region. However, it becomes difficult for any UPMB to initiate the redistribution of the deformation once the stretching factor in the first deformed region exceeds a critical value. The microcontinent formations observed in the Indian Ocean, in the Norwegian–Greenland Sea, in the Red Sea–Afar region and in the western Mediterranean are particularly discussed in relation to the transition mode, providing some important geodynamic implications.
Erratum to "Fixed Points of Maps of a Nonaspherical Wedge"
Authors: Kim Seungwon , Brown RobertF , Ericksen Adam , Khamsemanan Nirattaya , Merrill Keith 
Published: August 2010

AbstractIn the original paper, it was assumed that a selfmap of "Equation missing", the wedge of a real projective space "Equation missing" and a circle "Equation missing", is homotopic to a map that takes "Equation missing" to itself. An example is presented of a selfmap of "Equation missing" that fails to have this property. However, all the results of the paper are correct for maps of the pair "Equation missing".
Major haemorrhage related to surgery in patients with type 1 and possible type 1 von Willebrand disease
Authors: Blanco Alicia , Chuit Roberto , Meschengieser Susana , Kempfer Ana , Farías Cristina , Lazzari María , Woods Adriana 
Published: August 2010

SummaryPatients with von Willebrand disease (VWD) frequently bleed under a challenge. The aim of our study was to identify predictive markers of perioperative major haemorrhage in type 1 (VWF:RCo = 15–30 IU dl-1) and possible type 1 (VWF:RCo = 31–49 IU dl-1)VWD patients. We recorded perioperative bleeding complications previous to diagnosis and laboratory parameters in 311 patients with 498 surgical procedures. The patients were grouped according to the absence (A) or presence (B) of perioperative major haemorrhages. Eighty-one patients (26%) and 87 surgical procedures (17.5%) presented major haemorrhages associated with surgeries. There was no difference between the percentage of type 1 and possible type 1 VWD patients who had major haemorrhages (32.6% and 24.8% respectively; p=ns). No difference in the prevalence of O blood group, age, gender, positive family history and laboratory test results (FVIII and VWF) was observed, independent of the haemorrhagic tendency. Bleeding after tooth extraction was the most frequent clinical feature observed in patients with perioperative major haemorrhages. The bleeding score and the number of bleeding sites (≥3) were not predictors of major haemorrhage associated with surgery. Caesarean section and adenotonsillectomy showed the highest frequency of major haemorrhages (24.6% and 22.3%, respectively). In conclusion, type 1 and possible type 1VWD patients showed similar incidence of perioperative major haemorrhages. Laboratory tests and positive family history did not prove to be effective at predicting major haemorrhages in patients that had either type 1 or possible type 1 VWD. The history of bleeding after tooth extraction could define risk factors of major haemorrhage.
Characterization of platelet-specific mRNA by real-time PCR after laser-assisted microdissection
Authors: Kwapiszewska Grazyna , Prakash Muyal Jai , Lengemann Björn , Bohle Rainer , Fink Ludger , Hölschermann Hans , Santoso Sentot 
Published: August 2010

SummaryCirculating anucleate platelets contain minute amounts of residual megakaryocytic-derived mRNA. To study cell type-specific gene expression in platelets, an accurate and sensitive method to detect and quantify platelet mRNA that excludes contamination with leukocyte RNA is mandatory. Applying laser-assisted microdissection and manipulation (LMM) we could isolate platelets from hemalaun-stained cytospins under permanent visual control and after laser-photolysis of nucleated blood cells. For mRNA quantification, the platelet-specific mRNAs were subsequently measured by real time RT-PCR. High-copy β3 integrin and low-copy α2 integrin as well as tissue factor (TF) transcripts were analyzed in LMM-harvested platelets. In 91.2% (83/91) β3 integrin was detectable with a mean threshold cycle (CT) value of 32.5 ± 3.2 (≤ 50,000 cells). The low-copy α2 integrin mRNA was positive in 84.4% (38/45) with CT mean value of 36.9 ± 1.3, indicating that the relative expression of α2 integrin mRNA in platelets was about 130 times lower than β3.The TF transcript was undetectable in all samples. Comparing platelet mRNA from LMM isolation to that from limiting dilution series resulted in a high accordance for β3 integrin transcript in both, recovery (91.2% vs. 95.2%) and CT value (32.5 vs.32.8).These results demonstrate that the combination of LMM and real-time RT-PCR is a valuable tool for precise, platelet-specific mRNA analysis without contamination of other cells.
Protective effect of ischaemic preconditioning on ischaemia/reper-fusion-induced microvascular obstruction determined by online measurements of coronary pressure and blood flow in pigs
Authors: Posa Aniko , Pavo Noemi , Hemetsberger Rayyan , Csonka Csaba , Csont Tamas , Ferdinandy Peter , Petrasi Zsolt , Varga Csaba , Pavo Imre , Laszlo jr Ferenc , Huber Kurt , Gyöngyösi Mariann 
Published: August 2010

SummaryWe investigated the protective effect of ischaemic preconditioning (IP) on the maintenance of coronary patency using online measurements of coronary pressures and blood flow in a closed-chest reperfused acute myocardial infarction (MI) model in pigs. Catheter-based 90-min occlusion followed by 60-min reperfusion of the left anterior descending coronary artery (LAD) was performed in anesthetised pigs (MI group). IP was applied (IP group) through two cycles of 5-min occlusion and 5-min reperfusion of the LAD before MI induction. Coronary patency was determined by measurements of coronary wedge pressure, collateral fractional flow reserve (FFRcoll), collateral pressure index (CPI) and absolute coronary blood flow (CBF). Inducible and constitutive nitric oxide synthase (iNOS/cNOS) activities and expressions were determined in the myocardium. Plasma levels of myeloperoxidase (MPO, index of activated leukocytes) and mean platelet volume (MPV, index of activated platelets) were measured. IP resulted in significantly lower levels of MPO (0.52 ± 0.19 vs. 1.05 ± 0.24 U/l, p<0.001) and MPV (9.1 ± 0.6 vs. 9.6 ± 1.0 fl, p=0.04), higher FFRcoll (0.17 ± 0.05 vs. 0.04 ± 0.05, p<0.001), CPI (0.13 ± 0.05 vs. 0.02 ± 0.05, p<0.001) and CBF (70.7 ± 4.2 vs. 50.8 ± 4.8 m/min, p<0.001) post-reperfusion as compared with the MI group. IP resulted in significantly higher cNOS activity and eNOS expression. Significant negative correlation was found between MPO and measures of coronary patency (FFRcoll, CPI and CBF) and cNOS activity. Moreover, cNOS activity correlated significantly with FFRcoll, CPI and CBF. In conclusion, IP attenuates the release of MPO and platelet activation, thereby contributing to the maintenance of vessel patency at microvascular level after reperfusion of the infarct-related artery.
The Roles of Surface-Observation Ensemble Assimilation and Model Complexity for Nowcasting of PBL Profiles: A Factor Separation Analysis
Authors: Rostkier-Edelstein Dorita , Hacker Joshua P. 
Published: August 2010

AbstractRecent results showed the ability of surface-observation assimilation with a single-column model (SCM) and an ensemble filter (EF) to skillfully estimate the vertical structure of the PBL when only climatological information is provided for initialization and forcing. The present study quantifies the relative benefits of model complexity, compared to surface-observation assimilation, for making 30-min SCM ensemble predictions (nowcasts). The SCM is initialized and forced by timely mesoscale forecasts, making it capable of providing flow-dependent probabilistic very short-range forecasts of PBL profiles wherever surface observations are available. Factor separation (FS) analysis measures the relative contributions to skill from EF surface assimilation compared to selected SCM components: parameterized radiation and objectively scaled horizontal advection. Here, the SCM–EF system is presented and its deterministic skill (as represented by ensemble-mean error) is analyzed with FS. Results show that surface assimilation can more meaningfully contribute to the skill levels of temperature, wind, and mixing-ratio nowcasts than model enhancements under a wide range of flow scenarios. However, in the convective PBL regime surface assimilation can enhance the moist bias often observed in parameterized PBL mixing ratio profiles due to poor covariances estimated from the ensemble. Then, the SCM–EF proves useful in revealing a model deficiency. Externally imposed horizontal advection is required to provide skillful ensemble-mean forecasts when not assimilating surface observations, but can offset the benefit realized from assimilation by quickly sweeping the updated state out of the domain. The radiation scheme has a minor effect on forecast performance. It improves the nowcast surface temperature at night, and can act synergistically with assimilation to improve low-level jet predictions, but the effect above the surface steeply decreases with height. The results suggest that an SCM–EF may be helpful in wind-power and pollutant dispersion applications.
Deep sequencing of the small RNA transcriptome of normal and malignant human B cells identifies hundreds of novel microRNAs
Authors: Jima Dereje D. , Zhang Jenny , Jacobs Cassandra , Richards Kristy L. , Dunphy Cherie H. , Choi William W. L. , Yan Au Wing , Srivastava Gopesh , Czader Magdalena B. , Rizzieri David A. , Lagoo Anand S. , Lugar Patricia L. , Mann Karen P. , Flowers Christopher R. , Bernal-Mizrachi Leon , Naresh Kikkeri N. , Evens Andrew M. , Gordon Leo I. , Luftig Micah , Friedman Daphne R. , Weinberg J. Brice , Thompson Michael A. , Gill Javed I. , Liu Qingquan , How Tam , Grubor Vladimir , Gao Yuan , Patel Amee , Wu Han , Zhu Jun , Blobe Gerard C. , Lipsky Peter E. , Chadburn Amy , Dave Sandeep S. ,   for the Hematologic Malignancies Research Consortium (HMRC)
Published: August 2010

Abstract
A role for microRNA (miRNA) has been recognized in nearly every biologic system examined thus far. A complete delineation of their role must be preceded by the identification of all miRNAs present in any system. We elucidated the complete small RNA transcriptome of normal and malignant B cells through deep sequencing of 31 normal and malignant human B-cell samples that comprise the spectrum of B-cell differentiation and common malignant phenotypes. We identified the expression of 333 known miRNAs, which is more than twice the number previously recognized in any tissue type. We further identified the expression of 286 candidate novel miRNAs in normal and malignant B cells. These miRNAs were validated at a high rate (92%) using quantitative polymerase chain reaction, and we demonstrated their application in the distinction of clinically relevant subgroups of lymphoma. We further demonstrated that a novel miRNA cluster, previously annotated as a hypothetical gene LOC100130622, contains 6 novel miRNAs that regulate the transforming growth factor-β pathway. Thus, our work suggests that more than a third of the miRNAs present in most cellular types are currently unknown and that these miRNAs may regulate important cellular functions.
Kinetic Analysis for the Effect of Intramolecular Hydrogen Bonding on Photophysical Properties of N-Hydroxyalkyl-1,8-naphthalimides
Authors: Matsubayashi Kazuhiko , Kajimura Chisato , Shiratori Hideo , Kubo Yasuo , Yoshihara Toshitada , Tobita Seiji 
Published: August 2010

Abstract
N-Methyl-, N-(2-hydroxyethyl)-, N-(2-methoxyethyl)-, N-(3-hydroxypropyl)-, and N-(3-methoxypropyl)-1,8-naphthalimide (1, 2a, 2b, 3a, and 3b, respectively) were prepared and their photophysical properties examined. The UV and IR spectra of 2a and 3a in dichloromethane showed the presence of intramolecular hydrogen bonding between the carbonyl group and the hydroxy group. In addition, the fluorescence intensities of 2a and 3a in dichloromethane were found to be about two times larger than those of 1, 2b, and 3b. Furthermore, the fluorescence lifetimes of 2a and 3a, determined by picosecond single photon counting, were about two times longer than those of 1, 2b, and 3b. The rate constants of the intersystem crossing (kisc) for 2a and 3a, calculated based on the quantum yields of the intersystem crossing (Φisc) determined by the time-resolved thermal lensing technique, were about one half of those obtained for 1, 2b, and 3b, while the rate constants of fluorescence emission (kf) and internal conversion (kic) were minimally affected by the presence of intramolecular hydrogen bonding. Enhancement of the fluorescence quantum yield and the lifetime of 2a and 3a was thus explained by a decrease in the efficiency of the intersystem crossing from 1(ππ*) to 3(nπ*), that results from an increase in the energy of the 3(nπ*) level due to the presence of intramolecular hydrogen bonding.
Asymmetric Allylation of Aldehydes Catalyzed by Simple Dual Small Organic Molecules: l-Proline and l-Prolinol
Authors: Chen Guo-hong , Liu Ling-yan , Wei Xiao-ning , Chang Wei-xing , Li Jing 
Published: August 2010

Abstract
A novel and simple methodology for the asymmetric allylation of aldehydes was reported. Double small organic molecules such as l-proline and l-prolinol were first employed for providing a chiral environment so as to afford chiral homoallylic alcohols in high yields and moderate enantioselectivities in our protocol.
anti-Selective Vinylogous Aldol Reaction by Silylated Alkyldioxinone Dienolate
Authors: Yoshinari Tomohiro , Ohmori Ken , Suzuki Keisuke 
Published: August 2010

Abstract
Diastereoselective vinylogous aldol reaction is reported by exploiting a silylated dioxinone to give anti-adducts in high selectivity.
The burrow system of the common vole (M. arvalis, Rodentia) in Switzerland
Authors: Brügger Andrea , Nentwig Wolfgang , Airoldi Jean-Pierre 
Published: August 2010

Abstract
Fifty burrow systems of Microtus arvalis were excavated, from October 2006 to August 2007 in wildflower fields and quasi-natural habitats in five areas near Bern, Switzerland. They comprise an aboveground part, which is longer in spring/summer, and a subterranean part, which is longer in autumn/winter. Three main construction types exist: (a) linear burrows, (b) compact and tight networks, and (c) structures containing both a compact network around the nest and linear parts elsewhere. The subterranean length was on average 16.9 m (range: 0.5–70.2 m) and aboveground length 39.4 m (range: 0–95 m). Numbers of intersections, dead ends, and openings correlate significantly with subterranean burrow length. Nests and food caches were located at a maximal depth and mostly in a central position, as revealed by graph theory.