bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ambulatory care connections of Medicaid‐insured children with sickle cell disease
Authors: Bundy David G. , Muschelli John , Clemens Gwendolyn D. , Strouse John J. , Thompson Richard E. , Casella James F. , Miller Marlene R. 
Published: March 2012

AbstractBackgroundSickle cell disease (SCD) requires coordinated ambulatory care from generalists and hematologists. We examined when children with SCD establish ambulatory care connections, whether these connections are maintained, and how these connections are used before and after hospitalizations.ProcedureWe conducted a retrospective cohort study of Medicaid‐insured Maryland children with SCD from 2002 to 2008. For children enrolled from birth, time to first, second, and third generalist and first hematologist visits was plotted. For all children, we analyzed ambulatory visits by age group, by emergency department (ED) and hospital use, and before and after hospitalizations.ResultsThe overall study cohort comprised 851 children; 178 provided data from birth. Ambulatory care connections to generalists were made rapidly; connections to hematologists occurred more slowly, if at all (38% of children had not seen a hematologist by age 2 years). Visits with generalists decreased as patients aged, as did visits with hematologists (54% of children in the 12–17 year age group had no hematology visits in 2 years). Children with higher numbers of ED visits or hospitalizations also had higher numbers of ambulatory visits (generalist and hematologist). Most children had visits with neither generalists nor hematologists in the 30 days before and after hospitalizations.ConclusionsMedicaid‐insured children with SCD rapidly connect with generalists after birth; connections to hematologists occur more slowly. The observation that connections to generalists and hematologists diminish with time and are infrequently used around hospitalizations suggests that the ambulatory care of many Medicaid‐insured children with SCD may be inadequate. Pediatr Blood Cancer 2012; 59: 888–894. © 2012 Wiley Periodicals, Inc.
Cardiovascular outcomes in women with advanced breast cancer exposed to chemotherapy
Authors: Yood Marianne Ulcickas , Wells Karen E. , Alford Sharon Hensley , Dakki Heather , Beiderbeck Annette B. , Hurria Arti , Gross Cary P. , Oliveria Susan A. 
Published: March 2012

ABSTRACTPurposeTo quantify incidence of cardiovascular outcomes in patients with advanced breast cancer receiving cardiotoxic and non‐cardiotoxic chemotherapy.MethodsThis study identified all women at a Midwestern health system with initial diagnosis of American Joint Commission on Cancer Stage III/IV breast cancer (1995–2003) and random sample of 50 women initially diagnosed with Stage I/II who progressed to Stage III/IV. The rate of new cardiovascular outcomes (heart failure, dysrhythmia, and ischemia events) for cardiotoxic (anthracycline or trastuzumab) and non‐cardiotoxic agents was calculated.ResultsOf 315 patients, 90.5% (n = 285) received systemic cancer therapy; 67.7% (n = 193) received cardiotoxic drugs. Older patients were less likely to receive cardiotoxic agents (86.4%, ≤59 years vs. 31.9%, 70+ years). Adjusting for age, race, stage, surgery/radiation, estrogen receptor/progesterone receptor status, and diagnosis year, rate of new cardiac events was higher in patients exposed to cardiotoxic drugs compared with those exposed to non‐cardiotoxic drugs (adjusted hazard ratio = 2.5, 95%CI = 0.9–7.2). Patients with cardiac event history (relative risk = 3.2, 95%CI = 2.0–5.1) and those with heart failure history (relative risk = 5.9, 95%CI = 2.4–14.6) were more likely to receive non‐cardiotoxic treatment. Heart failure events occurred steadily over time; after 3 years of follow‐up, 16% exposed to cardiotoxic drugs experienced an event, and 8% of those exposed to non‐cardiotoxic drugs experienced an event.ConclusionsPatients with cardiac comorbidity are less likely to receive cardiotoxic agents. Use of cardiotoxic agents is common; treatment is related to patient and tumor characteristics and is associated with substantial risk of cardiotoxicity that persists during patients' remaining lifespan. Copyright © 2012 John Wiley & Sons, Ltd.
Resistance risk assessment within herbicide authorisation – a call for sensitivity data
Authors: Ulber Lena , Nordmeyer Henning , Zwerger Peter 
Published: March 2012

AbstractIn most European countries, the risk of herbicide resistance is assessed as part of the authorisation of herbicides in accordance with EPPO Standard PP 1/213(2). Because the susceptibility of weed populations to a certain herbicide may vary greatly, one part of resistance risk assessment is the testing for sensitivity variation among different populations of target weed species with a high resistance risk. This paper emphasises the importance of sensitivity data provision with regard to the recent EU Regulation (EC) 1107/2009 concerning the placing of plant protection products on the market and outlines the main technical requirements for sensitivity data. A useful principle is that sensitivity data should be provided for all herbicides with a high resistance risk regardless of whether resistance has already evolved against the herbicidal substance. Methodical details regarding the generation of sensitivity data are discussed, together with remaining questions that will need to be addressed if a harmonised assessment of herbicide resistance risk is to be achieved. Copyright © 2012 Society of Chemical Industry
Influence of plasma treatments on the properties of GaN/AlGaN/GaN HEMT structures
Authors: Linkohr Stefanie , Pletschen Wilfried , Polyakov Vladimir , Himmerlich Marcel , Lorenz Pierre , Krischok Stefan , Kirste Lutz , Müller Stefan , Ambacher Oliver , Cimalla Volker 
Published: March 2012

AbstractWe investigated the impact of fluorine and nitrogen plasma treatments on the electronic transport properties of GaN/AlGaN/GaN heterostructures by employing different plasma processes and subsequent annealing in nitrogen atmosphere at 425 °C. It is demonstrated that the plasma treatments affect the 2‐dimensional electron gas (2DEG) properties of the HEMT structure resulting in a decrease of the surface potential. In order to understand the physical mechanisms we have undertaken an extensive study of the influence of plasma processing on the 2DEG properties.The electrical properties of the 2DEG are characterized by Hall measurements while X‐ray photoelectron spectroscopy (XPS) is used to investigate changes in surface chemical composition. Changes of the DC bias voltage have a strong effect on the mobility presumably by incorporation of fluorine and nitrogen close to the channel. To confirm this assumption, Monte Carlo simulations were carried out, taking into account surface potential and negatively charged fluorine acceptors acting as additional scattering centers within the 2DEG (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Theory of photoinduced melting of charge order in Et2Me2Sb[Pd(dmit)2]2
Authors: Nishioka Keita , Yonemitsu Kenji 
Published: March 2012

AbstractWe have theoretically studied photoinduced melting in a charge‐separated (CS) phase of the dimeric radical anion salt, Et2Me2Sb[Pd(dmit)2]2, by using an extended Peierls‐Hubbard model with intra‐molecular degrees of freedom and the mean‐field approximation. Model parameters are determined to reproduce the ground‐state properties of neutral, monovalent, and divalent dimers, as well as their crystallized states.We have calculated the dynamics of a photoexcited state in the CS phase by solving the time‐dependent Schrödinger equation. Neutral and divalent dimers are changed into a monovalent state after photoexcitation, resulting in the melting of charge order. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Electronic properties and charge order transition in (TMTTF)2X under c *‐direction pressure
Authors: Nagasawa Mitsuharu , Nagasawa Tokiko , Ichimura Koichi , Nomura Kazushige 
Published: March 2012

AbstractWe measured the electrical conductance along the adirection σa of (TMTTF)2SbF6 under anisotropic external pressure PEc which is parallel to the c *‐direction. It is expected that PEc achieves the uniaxial strain along the c *‐direction to the sample. We found that σ a is strongly influenced by applying PEc and the charge order (CO) transition temperature TCO decreases with increasing PEc.The tendencies of the PEc dependence of σ a and TCO is different from that of the anisotropic external pressures which are parallel to the a ‐ and the b ‐directions. We discuss the PEc effects on both σa and the CO transition. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
New copper thiophenedithiolenes for single component molecular metals
Authors: Neves Ana I. S. , Lopes Elsa B. , Almeida Manuel , Belo Dulce 
Published: March 2012

AbstractThe copper bisdithiolene complexes based on highly extended ligands incorporating fused TTF and thiophene moieties (α‐tdt = tiophenetetrathiafulvalenedithiolate and dtdt = dihydro‐thiophenetetrathiafulvalenedithiolate), were prepared and characterised by cyclic voltammetry and electrical transport measurements. The anionic complexes, (nBu4N)x[Cu(dtdt)2] (1) and (nBu4N)x[Cu(α‐tdt)2] (2), (1<x<2), obtained under anaerobic conditions, can be easily oxidised to the stable neutral state, [Cu(dtdt)2]0 (3) and [Cu(α‐tdt)2]0 (4), just by air or iodine exposure. Although no suitable single crystals of the neutral complexes could be obtained, room temperature conductivities measured in compressed powder pellets show values of σRT in the range of 0.10‐0.40 S/cm, a reasonable high electrical conductivity, for a powder compacted sample (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Theory of nonlinear conduction for charge‐ordered states in quasi‐two‐dimensional organic conductors
Authors: Tanaka Yasuhiro , Yonemitsu Kenji 
Published: March 2012

AbstractNonlinear conduction in quasi‐two‐dimensional organic conductors θ ‐(BEDT‐TTF)2X [BEDT‐TTF=bis(ethylenedithio)tetrathiafulvalene] is investigated theoretically. By using a nonequilibrium Green's function method, an extended Peierls‐Hubbard model attached to metallic electrodes is studied within the mean‐field approximation.We show that in a coexistent state of stripe‐type and nonstripe 3‐fold charge orders, the former charge order is completely suppressed by the applied bias, whereas the latter charge order survives. This leads to selective melting of charge order of different origins. The disappearance of the stripe‐type charge order largely alters the conduction behavior, which is consistent with the experimental findings. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Instability of charge ordered states probed in mesoscopic θ ‐(BEDT‐TTF)2RbZn(SCN)4 crystals
Authors: Kobayashi Kaya , Uchida Naoki 
Published: March 2012

AbstractWe developed a technique to grow organic crystals in nanoliter cells compatible with subsequent electrical transport measurements. The crystals grown in this technique have thickness less than 1 µm due to the confined growth condition. Here, a q2D organic conductor that shows a metal‐insulator transition in low temperature is grown. Resistivity (ϱ) measurements as a function of temperature (T) showed no discontinuity in dϱ /dT in contrast to the reported behavior in bulk crystals. Instead, ϱ displays a broad increase in the vicinity of 150 K. The nonlinear behavior of IV curves observed obeys a power law for most of the T range. A high bias voltage did not change the broad increase of resistivity between 140 and 160 K. The color plot demonstrates that the CO state is stable against biasing by an electric field. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Specific heat study of massless Dirac fermion system α‐(BEDT‐TTF)2I3 under pressure
Authors: Konoike Takako , Uchida Kazuhito , Osada Toshihito 
Published: March 2012

AbstractThe specific heat of massless Dirac fermion system α‐(BEDT‐TTF)2I3 was measured under pressure. In low temperature, the temperature dependence of the specific heat is almost quadratic reflecting the massless Dirac dispersion. In magnetic field, the specific heat shows anomalous behavior which can be understood by assuming the existence of the zero‐mode Landau level characteristic of the Dirac fermions system and its spin splitting. These results are consistent with the reported magnetoresistance. (© 2012 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Mineralogy and Origin of Dumortierite from Girola Area, Bhandara District, Eastern Maharashtra
Authors: Meshram Rajkumar R. , Ingle Kunal B. 
Published: March 2012

Abstract
Dumortierite an aluminium borosilicate mineral occurring as aggregates of fibrous, nodular and displaying variable colours is found at Girola hill of Bhandara district. It is associated with kyanite, sillimanite, andalusite, muscovite (sericite), quartz, topaz, rutile, tourmaline and pyrophyllite. It is pink, violet and blue (indigo blue) in colour associated with quartz veins. It shows strong pleochroism from colourless to light pink and pale blue to violet (azure blue).
The structural formula of dumortierite is calculated as Si2.98Al6.81B0.98O18 on the basis of X-ray analysis. Its origin is related to late stage pneumatolytic activity or due to interaction of hydrothermal solution rich in boric acid and titanium dioxide with alumina rich rocks.
Some Foraminiferal Taxa in the Middle to Late Jurassic Sediments of Kaiya Dome, Kutch
Authors: Talib A. , Gaur K. N. , Singh Y. P. , Wasim S. M. , Anjum Shabana 
Published: March 2012

Abstract
The Chari Formation exposed at Kaiya Dome, Kutch yielded a foraminiferal assemblage comprising 41 species dominated by the family Vaginulinidae. A systematic account of 11 species, reported for the first time form the Indian subcontinent, is presented. The foraminiferal assemblage is employed for preliminary interpretations regarding age, palaeoecology, and palaeobiogeography. The assemblage suggests a Callovian to Oxfordian age for the exposed sequence at Kaiya Dome. A near shore, open marine environment ranging from mid to outer shelf with fluctuating strandline is interpreted on the basis of the recovered foraminiferal assemblage. The Kaiya Dome foraminiferal assemblage exhibits a Tethyan affinity and suggests that the Kutch region, along with neighbouring regions, was engulfed by a shallow southwestern arm of Tethys during Middle to Late Jurassic times.
A New Cynodont Record from the Lower Triassic Panchet Formation, Damodar Valley
Authors: Das D. P. , Gupta Abir 
Published: March 2012

Abstract
This paper reports the find of a new non-mammalian cynodont from the Lower Triassic Panchet Formation of the Damodar valley, West Bengal, India. The fossil, recovered from a clay pellet rich calcareous sandstone bed, is a part of left lower jaw having five post canines that are damaged to various extents. A combination of mammal-like advanced characters such as much enlarged dentary, reduced post dentary bones, high coronoid process, large masseteric fossa, each post canine with a large central cusp flanked by a distal and a mesial accessory cusps with two additional lingually positioned cingular cusps, incipient root division and clearly demarcated crown–root juncture prompted to erect a new taxon Panchetocynodon damodarensis gen. et sp. nov.
Lattice Preferred Orientation Analysis of Deformed Quartz: An Advanced Application of High Resolution X-ray Diffractometer
Authors: Pandit Dinesh 
Published: March 2012

Abstract
The lattice preferred orientation analysis of quartz c-axis has been used to study the fabric elements in deformed quartz. Application of X-ray texture goniometer attached with high resolution X-ray diffractometer is used to improve the quality of the studies related to texture analysis, which is difficult to observe under conventional optical microscopic method. A comparison is made in between the conventional optical microscope and XTG method using a quartz sample from Malanjkhand reef is used to demonstrate the difference obtained within fabric elements. In photomicrograph, only one fabric component is observed while pole figure analysis using XTG method depicts three components of deformation. This technique is also very useful in the study of polymineralic rocks as well as deformation induced in synthetic materials.
Tectonostratigraphic Status of the Proterozoic Babarmal Pink Marble from the Aravalli Supergroup
Authors: Purohit Ritesh , Bhu Harsh , Mehta Prakshal , Avadich P. C. 
Published: March 2012

Abstract
Present study reviews the tectono-stratigraphic status of Babarmal pink marble from the Aravalli Supergroup through mapping and petrographic study of marble as well as associated lithologies. The pink marble is predominantly calcitic and characteristically different from dolomitic carbonate rocks of the Jhamarkotra Formation, the Lower Aravalli Group. The marble is devoid of organic matter and phosphate content unlike the Jhamarkotra dolomite. The pink marble is underlain by quartz-pebble rich conglomerate. This assemblage represents a rare lithological association which has not been reported so far from the Aravalli Supergroup.
Besides the above differences between the Babarmal pink marble and the Jhamarkotra dolomite we also noted significant similarities between the two with respect to greenschist facies metamorphism and three phases of deformational history. Similarities in both these aspects imply that the pink marble like the Jhamarkotra dolomite can be corroborated with the Aravalli orogenic cycle. While on the basis of distinguishing lithological and petrographic features the pink marble-pebbly conglomerate, the lithoassemblage is suggested to be designated as “Babarmal Formation” as a modification to the Babarmal Formation of Gupta et al. (1997) which constituted of pink marble.
The outcrop patterns on the high resolution map shows that the Babarmal litho-assemblages are sandwiched between the Barytes bearing meta-volcanics (that represent the underlying Delwara Formation) and the dolomite-quartzite-phyllite (that represent the overlying Jhamarkotra Formation) of the Lower Aravalli Group (Roy and Jakhar, 2002). Hence we suggest to place the Babarmal Formation as the middle stratigraphic unit of the Lower Aravalli Group of the Aravalli Supergroup.
Marine ice sheet stability
Authors: Schoof Christian 
Published: March 2012

AbstractWe examine the stability of two-dimensional marine ice sheets in steady state. The dynamics of marine ice sheets is described by a viscous thin-film model with two Stefan-type boundary conditions at the moving boundary or ‘grounding line’ that marks the transition from grounded to floating ice. One of these boundary conditions constrains ice thickness to be at a local critical value for flotation, which depends on depth to bedrock at the grounding line. The other condition sets ice flux as a function of ice thickness at the grounding line. Depending on the shape of the bedrock, multiple equilibria may be possible. Using a linear stability analysis, we confirm a long-standing heuristic argument that asserts that the stability of these equilibria is determined by a simple mass balance consideration. If an advance in the grounding line away from its steady-state position leads to a net mass gain, the steady state is unstable, and stable otherwise. This also confirms that grounding lines can only be stable in positions where bedrock slopes downwards sufficiently steeply.
Prevalence of serological markers and risk factors for bloodborne pathogens in Salvador, Bahia state, Brazil
Authors: MATOS S. B. , JESUS A. L. S. R. , PEDROZA K. C. M. C. , SODRE H. R. S. , FERREIRA T. L. H. , LIMA F. W. M. 
Published: March 2012

SUMMARYThis study aimed to determine the prevalence of serological markers for HIV-1/2, HBV, HCV,Treponema cruziandT. palliduminfections. The association of these infections with risk factors in a population from Salvador, Bahia, Brazil was also analysed. Of the 780 enrolled individuals, 545 (70%) were female and 235 (30%) were male. Seroprevalence of 0·8% (6/702), 1·3% (9/678), 1·5% (10/684), 3·5% (23/663) and 11·5% (77/668) for HIV-1/2, HBV, HCV,T. cruziandT. palliduminfections, respectively, was observed. The seroprevalence ofT. pallidumwas higher in males 20% (43/210) than in females 7% (34/458) (P < 0·01). An association between age and seroprevalence forT. cruzi(P = 0·02) andT. pallidum(P < 0·01) was observed. HBsAg was associated with having tattoos (3/37vs. 6/623,P = 0·01) and not having a steady sexual partner (5/141vs. 4/473,P = 0·04), while anti-HIV-1/2 was associated with having tattoos (2/39vs. 4/647,P = 0·04); however, larger studies are needed to categorically state the relationship of these risk factors with infectious agents. The prevalence of serological markers for HIV-1/2, HBV, HCV andT. cruziwas consistent with other studies.
Management and outcome of Ebstein's anomaly in children
Authors: Oxenius Angela , Attenhofer Jost Christine H. , Prêtre René , Dave Hitendu , Bauersfeld Urs , Kretschmar Oliver , Seifert Burkhardt , Balmer Christian , Valsangiacomo Buechel Emanuela R. 
Published: March 2012

AbstractObjectivesTo assess clinical presentation, treatment, and outcome of children with Ebstein's anomaly.BackgroundData on long-term outcome of children with Ebstein's anomaly are scarce.MethodsRetrospective analysis of all children with Ebstein's anomaly treated between February, 1979 and January, 2009 in a single tertiary institution. Primary outcomes included patient survival and need for intervention, either cardiac surgery or catheter intervention.ResultsA total of 42 patients were diagnosed with Ebstein's anomaly at a median age of 5 days ranging from 1 day to 11.7 years. Symptoms included cyanosis, heart murmur, and/or dyspnoea. Associated cardiac anomalies occurred in 90% of the patients. Average follow-up was 9.5 plus or minus 7.0 years. The overall mortality rate was 14%. Of the six patients, three died postnatally before treatment. Cardiac surgery and/or catheter-guided interventions were required in 33 patients (79%). Cardiac surgery was performed in 21 (50%) patients at a median age of 9.1 years (range 0.1–16.5 years), including biventricular repair in 13 (62%), one-and-a-half chamber repair in seven (33%), and a staged single-ventricle repair in one. Peri-operative mortality was 4%. Catheter-guided interventions consisted of device closure of an atrial septal defect in three cases and radiofrequency ablation of accessory pathways in nine patients. The estimated 10-year survival was 85.3 plus or minus 5.6%.ConclusionIn children, Ebstein's anomaly is usually diagnosed in the first year of age. Even though children with Ebstein's anomaly often require an intervention, their peri-operative mortality is low and long-term survival is good. Symptomatic newborns requiring an intervention may have a worse outcome.
Equity between with-profits policyholders and shareholders
Authors: O'Brien C. D. 
Published: March 2012

AbstractThis paper considers equity, or fairness, as being based on with-profits life insurers acting in accordance with their contracts. It uses the principles of with-profits business in conjunction with a legal approach to derive implied terms in with-profits contracts. The author examines certain situations of conflict between with-profits policyholders and shareholders. The paper does not regard all concerns put forward on behalf of policyholders’ interests as justified in practice: actuaries and regulators have been alert to issues and in many cases have taken appropriate action. However, it does suggest a number of practices that may be unfair. The paper also suggests that the current process for the reattribution of an inherited estate may favour shareholder interests over policyholder interests.