bluuebunny/crossref_metadata_2025_split huggingface dataset:
Long-Term Prognostic Value of Dobutamine Stress Echocardiography in Diabetic Patients With Limited Exercise Capability
Authors: van der Sijde Jors N. , Boiten Henk J. , Sozzi Fabiola B. , Elhendy Abdou , van Domburg Ron T. , Schinkel Arend F.L. 
Published: January 2012

OBJECTIVE
To determine the incremental prognostic value of dobutamine stress echocardiography (DSE) at 13-year follow-up (SD 3.2 years) for predicting mortality and cardiac events in diabetic patients.

RESEARCH DESIGN AND METHODS
A total of 396 diabetic patients (mean age 61 ± 11 years; 252 men [64%]) with limited exercise capacity who underwent DSE for evaluation of ischemia were studied. End points were all causes of mortality, cardiac death, and hard cardiac events (cardiac death and nonfatal myocardial infarction).

RESULTS
During a mean follow-up of 13 years, 230 patients (58%) died (121 cardiac deaths), and 30 patients had nonfatal myocardial infarction. Cumulative survival in patients with an abnormal DSE at 5, 10, and 15 years was 68, 49, and 41%, respectively. In patients with a normal DSE, these respective numbers were 74, 57, and 44%. Multivariate analyses showed that DSE provided incremental value over clinical characteristics and stress test parameters for prediction of mortality and cardiac events. Survival analysis showed that DSE provided optimal risk stratification up to 7 years after initial testing; after that period, the risk of adverse outcome increased comparably in both normal and abnormal DSE patients.

CONCLUSIONS
DSE provided restricted predictive value of adverse outcome in patients with diabetes who were unable to perform an adequate exercise stress test. DSE provided optimal risk stratification up to 7 years after initial testing. Repeated DSE at that time might add to its prognostic value.
Potential Implications of Coronary Artery Calcium Testing for Guiding Aspirin Use Among Asymptomatic Individuals With Diabetes
Authors: Silverman Michael Gordon , Blaha Michael J. , Budoff Matthew J. , Rivera Juan J. , Raggi Paolo , Shaw Leslee J. , Berman Daniel , Callister Tracy , Rumberger John A. , Rana Jamal S. , Blumenthal Roger S. , Nasir Khurram 
Published: January 2012

OBJECTIVE
It is unclear whether coronary artery calcium (CAC) is effective for risk stratifying patients with diabetes in whom treatment decisions are uncertain.

RESEARCH DESIGN AND METHODS
Of 44,052 asymptomatic individuals referred for CAC testing, we studied 2,384 individuals with diabetes. Subjects were followed for a mean of 5.6 ± 2.6 years for the end point of all-cause mortality.

RESULTS
There were 162 deaths (6.8%) in the population. CAC was a strong predictor of mortality across age-groups (age &lt;50, 50–59, ≥60), sex, and risk factor burden (0 vs. ≥1 additional risk factor). In individuals without a clear indication for aspirin per current guidelines, CAC stratified risk, identifying patients above and below the 10% risk threshold of presumed aspirin benefit.

CONCLUSIONS
CAC can help risk stratify individuals with diabetes and may aid in selection of patients who may benefit from therapies such as low-dose aspirin for primary prevention.
Eigensystem of an L
2-perturbed harmonic oscillator is an unconditional basis
Authors: Adduci James , Mityagin Boris 
Published: January 2012

Abstract
For any complex valued L
p-function b(x), 2 ≤ p < ∞, or L
∞-function with the norm ‖b↾L
∞‖ < 1, the spectrum of a perturbed harmonic oscillator operator L = −d
2/dx
2 + x
2 + b(x) in L
2(ℝ1) is discrete and eventually simple. Its SEAF (system of eigen- and associated functions) is an unconditional basis in L
2(ℝ).
Reflecting topological properties in continuous images
Authors: Tkachuk Vladimir 
Published: January 2012

Abstract
Given a topological property P, we study when it reflects in small continuous images, i.e., when for some infinite cardinal κ, a space X has P if and only if all its continuous images of weight less or equal to κ have P. We say that a cardinal invariant η reflects in continuous images of weight κ
+ if η(X) ≤ κ provided that η(Y) ≤ κ whenever Y is a continuous image of X of weight less or equal to κ
+. We establish that, for any infinite cardinal κ, the spread, character, pseudocharacter and Souslin number reflect in continuous images of weight κ
+ for arbitrary Tychonoff spaces. We also show that the tightness reflects in continuous images of weight κ
+ for compact spaces.
We present examples showing that separability, countable extent and normality do not reflect in continuous images of weight ω
1. Besides, under MA + ¬ CH, the Fréchet-Urysohn property does not reflect in continuous images of weight ω
1 even for compact spaces. An application of our techniques gives a solution of an open problem published by Ramírez-Páramo.
If Jensen’s κ
+-Axiom
$$\left( {\diamondsuit _{\kappa ^ + } } \right)$$
holds for an infinite cardinal κ, then for an arbitrary space X with no G
κ-points there exists a continuous surjective map f: X → Y such that w(Y) = κ
+ and Y has no G
tk-points. We apply this result to solve a problem of Kalenda.
Hilbert volume in metric spaces. Part 1
Authors: Gromov Misha 
Published: January 2012

Abstract
We introduce a notion of Hilbertian n-volume in metric spaces with Besicovitch-type inequalities built-in into the definitions. The present Part 1 of the article is, for the most part, dedicated to the reformulation of known results in our terms with proofs being reduced to (almost) pure tautologies. If there is any novelty in the paper, this is in forging certain terminology which, ultimately, may turn useful in an Alexandrov kind of approach to singular spaces with positive scalar curvature [Gromov M., Plateau-hedra, Scalar Curvature and Dirac Billiards, in preparation].
Solitary quotients of finite groups
Authors: Tărnăuceanu Marius 
Published: January 2012

Abstract
We introduce and study the lattice of normal subgroups of a group G that determine solitary quotients. It is closely connected to the well-known lattice of solitary subgroups of G, see [Kaplan G., Levy D., Solitary subgroups, Comm. Algebra, 2009, 37(6), 1873–1883]. A precise description of this lattice is given for some particular classes of finite groups.
On the structure vector field of a real hypersurface in complex two-plane Grassmannians
Authors: Machado Carlos , Pérez Juan 
Published: January 2012

Abstract
Considering the notion of Jacobi type vector fields for a real hypersurface in a complex two-plane Grassmannian, we prove that if a structure vector field is of Jacobi type it is Killing. As a consequence we classify real hypersurfaces whose structure vector field is of Jacobi type.
Approximate κ-state solutions to the Dirac-Yukawa problem based on the spin and pseudospin symmetry
Authors: Ikhdair Sameer 
Published: January 2012

Abstract
Using an approximation scheme to deal with the centrifugal (pseudo-centrifugal) term, we solve the Dirac equation with the screened Coulomb (Yukawa) potential for any arbitrary spin-orbit quantum number κ. Based on the spin and pseudospin symmetry, analytic bound state energy spectrum formulas and their corresponding upper- and lower-spinor components of two Dirac particles are obtained using a shortcut of the Nikiforov-Uvarov method. We find a wide range of permissible values for the spin symmetry constant C
s from the valence energy spectrum of particle and also for pseudospin symmetry constant C
ps from the hole energy spectrum of antiparticle. Further, we show that the present potential interaction becomes less (more) attractive for a long (short) range screening parameter α. To remove the degeneracies in energy levels we consider the spin and pseudospin solution of Dirac equation for Yukawa potential plus a centrifugal-like term. A few special cases such as the exact spin (pseudospin) symmetry Dirac-Yukawa, the Yukawa plus centrifugal-like potentials, the limit when α becomes zero (Coulomb potential field) and the non-relativistic limit of our solution are studied. The nonrelativistic solutions are compared with those obtained by other methods.
Neutrophil to lymphocyte count ratio as a biomarker of bacterial infections
Authors: Holub Michal , Beran Ondřej , Kaspříková Nikola , Chalupa Pavel 
Published: January 2012

AbstractThe implementation of new markers of bacterial infection into clinical practice is hindered by their costs. We assessed the potential use of the neutrophil to lymphocyte count ratio (NLCR) to discriminate between bacterial and viral infections. NLCR was evaluated in 45 patients with bacterial infections: 24 patients with viral infections and 18 healthy adults. The medians of NLCR were 11.73 in bacterial infections, 2.86 in viral infections and 1.86 in controls. The NLCR cut-off value of 6.2 exhibited a sensitivity value of 0.91 and a specificity value of 0.96 for bacterial infection. These results suggest a diagnostic potential for NLCR.
Musculoskeletal manifestations of mucopolysaccharidosis type VI and effects of enzyme replacement therapy
Authors: Marucha Jolanta , Jurecka Agnieszka , Różdżyńska-Świątkowska Agnieszka , Tylki-Szymańska Anna 
Published: January 2012

AbstractThe aim of this study was to describe the musculoskeletal manifestations of mucopolysaccharidosis VI and to assess the effectiveness of enzyme replacement therapy (ERT) with recombinant human arylsulfatase B on the bone and joint involvement in a patient with a severe phenotype of the disease. Before the initiation of ERT, the patient presented with significant range of motion (ROM) limitations at multiple joints. Flexion contractures were noticeable in all joints. After 48 weeks of ERT, improvement in active and passive shoulder flexion, as well as passive elbow and wrist flexion, was noticed. ROM improvements were reflected in patient’s enhanced self-care.
An Experimental and Numerical Study of Tip Vortex Cavitation
Authors: Szantyr J. , Flaszyński P. , Tesch K. , Suchecki W. , Alabrudziński S. 
Published: January 2012

An Experimental and Numerical Study of Tip Vortex Cavitation
The article presents the results of the research project concerning tip vortex cavitation. This form of cavitation is very important in operation of many types of rotary hydraulic machines, including pumps, turbines and marine propellers. Tip vortex cavitation generates noise, vibration and erosion. It should be eliminated or significantly limited during the design of these types of machines. The objective of the project was to develop an accurate and reliable method for numerical prediction of tip vortex cavitation, which could serve this purpose. The project consisted of the laboratory experiments and numerical calculations. In the laboratory experiments tip vortex cavitation was generated behind a hydrofoil in the cavitation tunnel and the velocity field around the cavitating kernel was measured using the Particle Image Velocimetry method. Measurements were conducted in three cross-sections of the cavitating tip vortex for a number of angles of attack of the hydrofoil and for several values of the cavitation index. In the course of numerical calculations two commercial CFD codes were used: Fluent and CFX. Several available approaches to numerical modeling of tip vortex cavitation were applied and tested, attempting to reproduce the experimental conditions. The results of calculations were compared with the collected experimental data. The most promising computational approach was identified.
Vibration Analysis of Grid-Stiffened Circular Cylindrical Shells with Full Free Edges
Authors: Jam J. , Zadeh M. , Taghavian H. , Eftari B. 
Published: January 2012

Vibration Analysis of Grid-Stiffened Circular Cylindrical Shells with Full Free Edges
Free vibration of grid stiffened circular cylindrical shells is investigated based on the first Love's approximation theory using Galerkin method. Full free edges are considered for boundary conditions. An equivalent stiffness model (ESM) is used to develop the analytical solution of the grid stiffened circular cylindrical shell. The effect of helical stiffeners orientation and some of the geometric parameters of the structure have been shown. The accuracy of the analysis has been examined by comparing results with those available in the literature and finite element approach.
Comparing combined gas tubrine/steam turbine and marine low speed piston engine/steam turbine systems in naval applications
Authors: Dzida Marek , Olszewski Wojciech 
Published: January 2012

Comparing combined gas tubrine/steam turbine and marine low speed piston engine/steam turbine systems in naval applications
The article compares combined systems in naval applications. The object of the analysis is the combined gas turbine/steam turbine system which is compared to the combined marine low-speed Diesel engine/steam turbine system. The comparison refers to the additional power and efficiency increase resulting from the use of the heat in the exhaust gas leaving the piston engine or the gas turbine. In the analysis a number of types of gas turbines with different exhaust gas temperatures and two large-power low-speed piston engines have been taken into account. The comparison bases on the assumption about comparable power ranges of the main engine.
Exhaust gas temperature measurements in diagnostic examination of naval gas turbine engines
Authors: Korczewski Zbigniew 
Published: January 2012

Exhaust gas temperature measurements in diagnostic examination of naval gas turbine engines
The third part of the article presents a method for detecting failures of the automatic engine control system with the aid of an exhaust gas temperature setter, specially designed and machined for this purpose. It also presents a procedure of identifying the operating tolerances and determining the diagnostic tolerances for the exhaust gas temperature recorded in the naval turbine engine during the start-up and acceleration processes. The diagnostic tolerances were determined using the statistic inference, based on the hypothesis about the normal distribution of the starting exhaust gas temperature dispersion at the initial time of engine operation. The above hypothesis was verified using the non-parametric statistic test χ2 for examining the consistency of the empirical distribution with the assumed normal distribution. As a result of the examination, satisfactory convergence of the compared distributions was obtained which made the basis for assuming the three-sigma limits of the diagnostic tolerance for the analysed engine control parameter.
The Effect of Beauveria Bassiana on Brazilian Poplar Moth Condylorrhiza Vestigialis (Lepidoptera: Crambidae)
Authors: do Amaral Dal Pogetto Mário , Wilcken Carlos 
Published: January 2012

The Effect ofBeauveria Bassianaon Brazilian Poplar MothCondylorrhiza Vestigialis(Lepidoptera: Crambidae)The Brazilian poplar moth is the most important pest of poplar plantations in Brazil. This research evaluated the effect ofBeauveria bassianaBals. (Vuill.) on the mortality and development ofCondylorrhiza vestigialisGuen. (Lepidoptera: Crambidae). The aim was to develop alternative methods for management of this pest. The pathogens were sprayed on poplar leaves and consequently, the pathogens reached the caterpillars.Bacillus thuringiensisvar.kurstakiBerliner was sprayed as the standard treatment. The spray for the control was distilled water. Both pathogensB. bassianaandB. thuringiensisaffected insect development with increase mortality at each stage of the insect cycle, reaching a satisfactory control level. Microbial control of Brazilian poplar moth withB. bassianais promising. Tests with other strains and species of pathogens, mainly under field conditions, were also encouraging. This is the first report about the action ofB. bassianaagainstC. vestigialis.
Influences of Botanical Pesticides and Biological Agents on Orius Laevigatus - Frankliniella Occidentalis Dynamics Under Greenhouse Conditions
Authors: Bonsignore Carmelo , Vacante Vincenzo 
Published: January 2012

Influences of Botanical Pesticides and Biological Agents onOrius Laevigatus - Frankliniella OccidentalisDynamics Under Greenhouse ConditionsWe assessed the influence of nine biopesticides on adults and larvae of western flower thrips (WFT),Frankliniella occidentalis(Pergande) and its predator, the anthocoridOrius laevigatus(Fieber) under Mediterranean greenhouse conditions. Trials were carried out in a strawberry crop where both species had naturally established. Foliar sprays were applied weekly for one month. Treatments did not provide sufficient control of larval and adultF. occidentalis. The negative effects on the dynamics of the predator were evident only with the use of some specific products. The botanical insecticides rotenone and neem, and the nematodeSteinernema feltiae(Filipjev) reducedO. laevigatusnumbers, and these effect are evident in the adult stage ofO. laevigatus. Such products have determined a reduction of the population of the predator from the first treatments even if the incidence was not very high. We conclude that the use of some botanical pesticides and nematodes against WFT is uneconomical and possibly disadvantageous where there is an established predator-prey population.
The Integration Between Trichogramma Evanescens West. (Hymenoptera: Trichogrammatidae) and Selected Bioinsecticides for Controlling the Potato Tuber Moth Phthorimaea Operculella (Zell.) (Lepidoptera: Gelechiidae) of Stored Potatoes
Authors: Mandour Nasser , Sarhan Awad , Atwa Dina 
Published: January 2012

The Integration BetweenTrichogramma EvanescensWest. (Hymenoptera: Trichogrammatidae) and Selected Bioinsecticides for Controlling the Potato Tuber MothPhthorimaea Operculella(Zell.) (Lepidoptera: Gelechiidae) of Stored PotatoesThe efficacy of the egg-egg parasitoidTrichogramma evanescens(Hymenoptera: Trichogrammatidae) and certain bioinsecticides (e.g., Neemix, Virotecto, Agerin, Dipel 2x and Spinosad) for controlling the potato tuber moth (PTM),Phthorimaea operculella(Zeller) (Lepidoptera: Gelechiidae) under storage conditions was studied. Single and combined treatments ofT. evanescensand the bioinsecticides were tested. Neemix and spinosad were evaluated as spray treatments. Virotecto, Agerin and Dipel 2x were evaluated as dust and spray treatments. Data were recorded in terms of rate of infestation, reduction of infestation, number ofP. operculellapupae, and number of mines per 20 tubers as well as percentage of edible parts. Data revealed that the percentage of infestation in the control treatment was as high as in the Neemix treatment being 96.67 and 90% after one and two months of storage, respectively. Obviously, Spinosad and Dipel 2x were the most effective bioinsecticides in reducing tuber infestation and number ofP. operculellarecovered pupae. Virotecto and Agerin reduced rate of infestation and number of recoveredP. operculellapupae over that of the control, but their effect was significantly lower than that of Spinosad or Dipel 2x. Moreover, there were significant differences among treatments in the form of the number ofP. operculellatunnels and percentages of edible parts after two months in storage. Data further indicated that the integration between the tested bioinsecticides andT. evanescensenhanced the control ofP. operculella.Significant differences in percentages of infestation, edible parts, number of recovered pupae as well as number of mines in stored potatoes existed between individual treatments (withoutTrichogramma) and combined treatments.
Prevalence of Races and Biotypes of Ralstonia Solanacearum in India
Authors: Chandrashekara Krishnappa , Prasannakumar Mothukapalli , Deepa Manthirachalam , Vani Akella , Khan Abdul 
Published: January 2012

Prevalence of Races and Biotypes ofRalstonia Solanacearumin IndiaBacterial wilt caused byRalstonia solanacearumis the most destructive disease of plants. Fifty-seven isolates ofR. solanacearumcausing wilt on different host plantsviz., tomato (Solanum lycopersicum), brinjal (S. melongena), potato (S. tuberosum), bird of paradise (Strelitzia reginae), ginger (Zingiber officinale), chili (Capsicum annuum), capsicum (Capsicum annuum), davana (Artemisia pallens) and coleus (Coleus forskohlii) were collected from the different agro climatic zones of Karnataka and other parts of India. In this study, 57 isolates were differentiated into race on the basis of their pathogenicity and their ability to infect different host. The isolates were established as race-1. None of the isolates infected mulberry and banana. Fifty-four isolates oxidized and utilized both the disaccharides and sugar alcohols. These isolates were positioned as biovars-3 according to Haywards classification system. Three isolates from Kerala, two ginger, and one tomato strain were not able to utilize dulcitol and lactose. Hence, they were categorized into a new taxo group within the system and designated as biovar-3B for the first time in India. There were 54 isolates which were confirmed as race-1, biovar-3, and 3 isolates were confirmed as race-1, biovar-3B by morphological, physiological, biochemical and pathogenicity studies. Two sets of primers (OLI1 & Y2 and Y1 & Y2) were used in this study to authenticate the organism. Furthermore, the identity of the isolates was confirmed by a serological diagnostic kit obtained from the International Potato Research Center, Lima, Peru, and single chain variable fragment antibody specific toR. solanacearum.
The Significance of Alien and Invasive Slug Species for Plant Communities in Agrocenoses
Authors: Kozłowski Jan 
Published: January 2012

The Significance of Alien and Invasive Slug Species for Plant Communities in AgrocenosesThis paper lists alien invasive species of slugs occurring on crops grown in the ground and under covers, as well as in adjacent habitats. It gives a description of their origin, distribution within Poland, frequency of occurrence in different habitats, and an evaluation of the danger to cultivated plants posed by particular slug species. Based on reports in the literature and the results of original research, basic data is presented concerning the biology and harmfulness of these slugs on crops. The potential risk of the spreading of invasive slug species is evaluated, as well as their adverse impact on crop plants. It has been concluded that a major risk to the biodiversity of agrocenoses and to cultivated plants is currently posed by the slugsArion lusitanicus, A. rufusandA. distinctus. These slugs are spreading rapidly within Poland, often occur in large numbers, and do significant damage to various species of plant.