bluuebunny/crossref_metadata_2025_split huggingface dataset:
Atmospheric influence on the deuterium excess signal in polar firn: implications for ice-core interpretation
Authors: Schlosser Elisabeth , Oerter Hans , Masson-Delmotte Valerie , Reijmer Carleen 
Published: May 2008

AbstractThe seasonal deuterium excess signal of fresh snow samples from Neumayer station, coastal Dronning Maud Land, Antarctica, was studied to investigate the relationship between deuterium excess and precipitation origin. An isotope model was combined with a trajectory model to determine the relative influence of different moisture sources on the mean annual course of the deuterium excess, focusing on the phase lag between δ18O and excess d. Whereas the annual course of δ18O always shows an austral summer maximum, which clearly depends on local temperature and the annual course of moisture source-area parameters, the deuterium excess of the fresh snow samples shows maximum values already in spring. There can be many different reasons for the time lag between δ18O and deuterium excess in an ice core, including post-depositional processes and changes in the moisture source of precipitation. The use of fresh snow samples enabled us to exclude post-depositional processes and study solely the influence of precipitation origin. Changes in the moisture source connected to systematic changes in the general atmospheric circulation can have a strong influence on the phase lag between deuterium excess and δ18O, which has to be taken into account for climatic interpretation of stable-isotope profiles from ice cores.
Climate reconstruction since the Little Ice Age by modelling Koryto glacier, Kamchatka Peninsula, Russia
Authors: Yamaguchi Satoru , Naruse Renji , Shiraiwa Takayuki 
Published: May 2008

AbstractBased on the field data at Koryto glacier, Kamchatka Peninsula, Russia, we constructed a one-dimensional numerical glacier model which fits the behaviour of the glacier. The analysis of meteorological data from the nearby station suggests that the recent rapid retreat of the glacier since the mid-20th century is likely to be due to a decrease in winter precipitation. Using the geographical data of the glacier terminus variations from 1711 to 1930, we reconstructed the fluctuation in the equilibrium-line altitude by means of the glacier model. With summer temperatures inferred from tree-ring data, the model suggests that the winter precipitation from the mid-19th to the early 20th century was about 10% less than that at present. This trend is close to consistent with ice-core results from the nearby ice cap in the central Kamchatka Peninsula.
Microseismic activity within a serac zone in an alpine glacier (Glacier d’Argentière, Mont Blanc, France)
Authors: Roux Pierre-François , Marsan David , Métaxian Jean-Philippe , O’Brien Gareth , Moreau Luc 
Published: May 2008

AbstractA passive seismic study was carried out underneath Glacier d’Argentière, Mont Blanc, France, where an array of seismometers was installed in a subglacial access tunnel. The data show a very high emissivity from the glacier. Fracturing can be discriminated from serac falls using the signal characteristics. We apply seismic array methods to locate the sources of these signals, using a two-step grid search in the parameter space. Four clusters of activity are found close to the network, showing that this fracturing does not take place uniformly over the glacier, but rather in isolated small zones. We compute a local magnitude using regional earthquakes for calibration. The magnitudes follow a classical Gutenberg–Richter law in the rangeML= −3 to 0.15, showing that no characteristic size events dominate the process. We suggest that those spatial clusters of icequakes could reveal the heterogeneous nature of the friction at the base of the glacier, with patches of high frictional stresses locally generating intense fracturing within the ice mass.
Model investigations of inland migration of fast-flowing outlet glaciers and ice streams
Authors: Price Stephen F. , Conway Howard , Waddington Edwin D. , Bindschadler Robert A. 
Published: May 2008

AbstractRecent observations of increased discharge through fast-flowing outlet glaciers and ice streams motivate questions concerning the inland migration of regions of fast flow, which could increase drawdown of the ice-sheet interior. To investigate one process that could lead to inland migration we conduct experiments with a two-dimensional, full-stress, transient ice-flow model. An initial steady state is perturbed by initiating a jump in sliding speed over a fraction of the model domain. As a result, longitudinal-stress gradients increase frictional melting upstream from the slow-to-fast sliding transition, and a positive feedback between longitudinal-stress gradients, basal meltwater production and basal sliding causes the sliding transition to migrate upstream over time. The distance and speed of migration depend on the magnitude of the perturbation and on the degree of non-linearity assumed in the link between basal stress and basal sliding: larger perturbations and/or higher degrees of non-linearity lead to farther and faster upstream migration. Migration of the sliding transition causes the ice sheet to thin over time and this change in geometry limits the effects of the positive feedback, ultimately serving to impede continued upstream migration.
Internal accumulation on Storglaciären, Sweden, in a multi-layer snow model coupled to a distributed energy- and mass-balance model
Authors: Reijmer Carleen H. , Hock Regine 
Published: May 2008

AbstractTo investigate the internal accumulation on Storglaciären, Sweden, we couple a multi-layer snow model to a distributed energy- and mass-balance model. The snow model describes the temperature, density and water-content evolution of the snow/ice pack and includes the processes of percolation and refreezing of water. The model is run for the period 9 May–2 September 1999 and validated against weather station and mass-balance observations on the glacier. The model performs reasonably well, with an average summer mass balance for the location of stake observations of –1.56 m w.e. compared to –1.59 m w.e. observed. However, the amount of melt is overestimated in the higher parts of the accumulation area and underestimated in the lower parts of the ablation area. The modelled mass balance is most sensitive to the albedo parameterization, the chosen momentum and scalar roughness lengths and all parameters related to snowfall. The modelled internal accumulation is +0.25 m w.e., which amounts to about 20% of the winter accumulation and results in a positive net balance for 1999 of +0.23 m w.e. The modelled internal accumulation is most sensitive to the initial subsurface temperature profile and the irreducible water content.
Solutions of linear and semilinear distributed parameter equations with a fractional Brownian motion
Authors: Duncan T. E. , Maslowski B. , Pasik‐Duncan B. 
Published: May 2008

AbstractIn this paper, some linear and semilinear distributed parameter equations (equations in a Hilbert space) with a (cylindrical) fractional Brownian motion are considered. Solutions and sample path properties of these solutions are given for the stochastic distributed parameter equations. The fractional Brownian motions are indexed by the Hurst parameter H ∈ (0, 1). For H = ½ the process is Brownian motion. Solutions of these linear and semilinear equations are given for each H ∈ (0, 1) with the assumptions differing for the cases H ∈ (0, ½) and H ∈ (½, 1). For the linear equations, the solutions are mild solutions and limiting Gaussian measures are characterized. For the semilinear equations, the solutions are either mild or weak. The weak solutions are obtained by transforming the measure of the associated linear equation by a Radon–Nikodym derivative (likelihood function). An application to identification is given by obtaining a strongly consistent family of estimators for an unknown parameter in a linear equation with distributed noise or boundary noise. Copyright © 2008 John Wiley & Sons, Ltd.
Light‐off location and front diffusion in a catalytic monolith reactor
Authors: Ramanathan Karthik , Gopinath Ashok 
Published: May 2008

AbstractA one‐dimensional solid–gas model has been used to study the light‐off behavior in a reactor system. Techniques from nonlinear analysis are applied to first arrive at an analytical expression to estimate the light‐off location in the reactor. The model is then extended to estimate the thickening of the light‐off front in the vicinity of the light‐off location due to heat diffusion effects in the solid substrate. Both these results are expressed in terms of all the important operating and design variables of the monolith reactor and also the reaction specific variables such as the kinetic parameters and heats of reaction. A specific case of a three‐way catalyst (TWC) is numerically treated in detail to illustrate the application of this work. Finally, we focus on using the insight obtained from this study to suggest design guidelines to optimize the performance of automotive catalytic monolith reactors. © 2008 American Institute of Chemical Engineers AIChE J, 2008
Physical characteristics of fluidized beds via pressure fluctuation analysis
Authors: Hartman Miloslav , Trnka Otakar 
Published: May 2008

AbstractDuring various applications of gas fluidized units, the state/quality of the fluidized bed of solids can change due to changes in operation conditions or variations in the gas or solid feed. An analysis method is developed and applied which employs spectra of the fast Fourier transform of measured pressure fluctuations within the fluidized bed. The procedure is based upon the spectral analysis of successive time series of pressure fluctuations reflecting the actual hydrodynamic state (regime) of the bed. Practical application of the method is illustrated for fluidization at ambient temperature and pressure of spherical particles (glass beads) as well as irregularly shaped particles (limestone, sulfated limestone, and dried sewage sludge), in an 8‐cm‐ID fluidized bed. Using air, experiments were conducted with different fractions of the materials spanning a very wide range of 0.28–4.5 mm. The evolution was explored of bed behavior from the onset of fluidization to the pneumatic transport (elutriation) of solids from the bed. The method recognizes alterations of the hydrodynamic state of the bed caused by minor changes in the bed mass and/or in the granularity of the bed material. © 2008 American Institute of Chemical Engineers AIChE J, 2008
Polymorphisms in the GRIA1 gene region in psychotic bipolar disorder
Authors: Kerner Berit , Jasinska Anna J. , DeYoung Joseph , Almonte Maricel , Choi Oi‐Wa , Freimer Nelson B. 
Published: May 2008

AbstractWe reported previously a significant linkage signal between psychotic bipolar disorder (BP) and microsatellite markers on chromosome 5q31–34 in the National Institute of Mental Health Bipolar Genetics Initiative (NIMH‐BPGI) data set, Wave 1. In an attempt to fine‐map this linkage signal we genotyped 1,134 single nucleotide polymorphisms (SNPs) under the linkage peak in 23 informative families (131 individuals) with evidence of linkage. We tested family based association in the presence of linkage with the computer software package FBAT. The most significant association in these families was with a SNP in the second intron of GRIA1 (α‐amino‐3‐hydroxy‐5‐methyl‐4‐isoxazole proprionic acid (AMPA) subunit 1 receptor gene) (rs490922, Z‐score = 3.3, P = 0.001). The analysis of 37 additional families with psychotic BP from NIMH‐BPGI data sets, Waves 2, 3, and 4 revealed a signal at a SNP in intron 5 of the GRIA1 gene (rs4385264, Z‐score = 3.2, P‐value = 0.002). A combined analysis of all 60 families continued to support evidence for association of GRIA1 with psychotic BP; however, individual SNPs could not be replicated across datasets. The AMPA1 receptor has been shown to influence cognitive function, such as working memory and reward learning. Our findings suggest that variations in this receptor may contribute to the pathophysiology of BP with psychotic features in some families. © 2008 Wiley‐Liss, Inc.
First homo‐peptides undergoing a reversible 310‐helix/α‐helix transition: Critical main‐chain length
Authors: Moretto Alessandro , Formaggio Fernando , Kaptein Bernard , Broxterman Quirinus B. , Wu Ling , Keiderling Timothy A. , Toniolo Claudio 
Published: May 2008

AbstractThe difference in length between the more elongated peptide 310‐helix and the more compact α‐helix is about 0.4 Å/residue. This property makes the 310‐/α‐helix reversible conversion very promising as a molecular switching tool between the N‐ and C‐terminal functions of a peptide backbone. In this work, using homo‐peptides of various main‐chain length, all based on the strongly helicogenic, Cα‐tetrasubstituted α‐amino acid Cα‐methyl‐L‐valine, we show that a well defined, solvent controlled, reversible 310‐/α‐helix transition takes place even in a homo‐oligomer as short as a terminally blocked hexapeptide. Homo‐peptide sequences blocked as a urethane or an acetamide at the N‐terminus and as a methyl ester or an N‐alkyl amide at the C‐terminus are all appropriate. The nature of the occurring helical species in the various solvents tested was assessed by electronic or vibrational circular dichroism. © 2008 Wiley Periodicals, Inc. Biopolymers (Pept Sci) 90: 567–574, 2008.This article was originally published online as an accepted preprint. The “Published Online” date corresponds to the preprint version. You can request a copy of the preprint by emailing the Biopolymers editorial office at biopolymers@wiley.com
The characterization of a novel dendritic system for gene delivery by isothermal titration calorimetry
Authors: Coles Daniel J. , Yang Shu , Minchin Rodney F. , Toth Istvan 
Published: May 2008

AbstractUnderstanding the nature of binding of polycationic dendrimers to DNA provides useful information on their role in gene delivery. In the present study, we have characterized the interaction of several peptide‐based polycationic dendrimers with salmon sperm DNA using isothermal titration calorimetry. The dendrimers consisted of the cell penetrating peptide TAT, a nuclear localization signal peptide and dendritic polylysine. The binding affinity and thermodynamic parameters were found to increase as the number of positive charges on the dendrimer increased, indicating that ionic interactions were the major binding forces between the two molecules. The effect of acidic pH (3.2) compared to a more neutral pH (7.2) was also examined. The binding affinity was stronger at the lower pH but precipitation of the complex was more prominent at pH 7.2 which was shown by large enthalpies. The results indicate that our dendrimers are forming stable complexes with DNA. © 2008 Wiley Periodicals, Inc. Biopolymers (Pept Sci) 90: 651–654, 2008.This article was originally published online as an accepted preprint. The “Published Online” date corresponds to the preprint version. You can request a copy of the preprint by emailing the Biopolymers editorial office at biopolymers@wiley.com
‘Failure to thrive’ revisited
Authors: Batchelor Jane 
Published: May 2008

AbstractThe term ‘non‐organic failure to thrive’ (FTT) has long been used in relation to young children with faltering growth for which no organic cause is found. In this paper, problems arising from dichotomised organic/non‐organic responses to FTT are explored and reasons for the assumption that non‐organic FTT was always due to emotional abuse or neglect are presented. The case is made that, except in a minority of cases, children fail to grow because they consume insufficient calories. Research studies on reasons for poor intake, from factors related to the child and their parents to the wider family and environment, are summarised. Following a brief reference to literature on outcomes, I argue that centile charts should be routinely completed for all young children. If faltering growth is identified, a multi‐factorial assessment should be undertaken. Such an assessment reduces the risk of interventions being based on outdated assumptions about non‐organic FTT and maximises the potential for successful resolution of poor growth. After briefly summarising the literature on interventions, I conclude with suggestions for improving practice in this field, including working in partnership with families and with health and social care professionals already known to them. Copyright © 2008 John Wiley & Sons, Ltd.
ChemInform Abstract: Ba2In2O4(OH)2: Proton Sites, Disorder and Vibrational Properties
Authors: Martinez Jean‐Raphael , Mohn Chris E. , Stoelen Svein , Allan Neil L. 
Published: May 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Icosahedral Li Clusters in the Structures of Li33.3Ba13.1Ca3 and Li18.9Na8.3Ba15.3.
Authors: Smetana Volodymyr , Babizhetskyy Volodymyr , Hoch Constantin , Simon Arndt 
Published: May 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Origin of Giant Dielectric Response in Nonferroelectric CaCu3Ti4O12: Inhomogeneous Conduction Nature Probed by Atomic Force Microscopy.
Authors: Fu Desheng , Taniguchi Hiroki , Taniyama Tomoyasu , Itoh Mitsuru , Koshihara Shin‐ya 
Published: May 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Thermodynamic Study of the Systems PrSe2.00—PrSe1.50 and GdSe1.875—GdSe1.50.
Authors: Chusova T. P. , Zelenina L. N. , Vasilyeva I. G. , Graf C. , Doert Th. 
Published: May 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Tellurium Tetrachloride: An Improved Method of Preparation.
Authors: Petragnani Nicola , Mendes Samuel R. , Silveira Claudio C. 
Published: May 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Indium(I) Heptachlorodigallate(III), InGa2Cl7.
Authors: Timofte Tudor , Mudring Anja‐Verena 
Published: May 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis, Structure, Magnetic and Optical Properties of Ternary Thio‐germanates: Ln4(GeS4)3 (Ln: Ce, Nd).
Authors: Choudhury Amitava , Dorhout Peter K. 
Published: May 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Bifunctional Enantioselective Ligands of Chiral BINOL Derivatives for Asymmetric Addition of Alkynylzinc to Aldehydes.
Authors: Zou Xiao‐Wei , Zheng Li‐Fei , Wu Ling‐Lin , Zong Li‐Li , Cheng Yi‐Xiang 
Published: May 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Organic Solvent‐Free, Enantio‐ and Diastereoselective, Direct Mannich Reaction in the Presence of Water.
Authors: Hayashi Yujiro , Urushima Tatsuya , Aratake Seiji , Okano Tsubasa , Obi Kazuki 
Published: May 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Synthesis of Multiply Functionalized Benzenes via Ruthenium‐Catalyzed Cycloaddition of Diiododiynes.
Authors: Yamamoto Yoshihiko , Hattori Kozo 
Published: May 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Immobilization of Ruthenium in Organic—Inorganic Hybrid Copolymers: A Reusable Heterogeneous Catalyst for Oxidation of Alcohols with Molecular Oxygen.
Authors: Matsumoto Tsutomu , Ueno Masaharu , Wang Naiwei , Kobayashi Shu 
Published: May 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Poly(diallyldimethylammonium chloride) as an Efficient Phase Transfer Catalyst in Solvent‐Free Reduction of Carbonyl Compounds with NaBH4.
Authors: Mahdavi Hossein , Haghani Ekram 
Published: May 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: A Ring Size Selective Reduction of Lactones Using SmI2 and H2O.
Authors: Duffy Lorna A. , Matsubara Hiroshi , Procter David J. 
Published: May 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
ChemInform Abstract: Methimazole‐Disulfide as an anti‐Thyroid Drug Metabolite Catalyzed the Highly Regioselective Conversion of Epoxides to Halohydrins with Elemental Halogens.
Authors: Eshghi H. , Tayyari S. F. , Rezvani‐Amin Z. , Roohi H. 
Published: May 2008

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.