bluuebunny/crossref_metadata_2025_split huggingface dataset:
An improved space vector modulation strategy for common-mode voltage reduction in matrix rectifier
Authors: Liu Xiao , Zhang Qingfan , Hou Dianli 
Published: March 2014

Abstract
The matrix rectifier modulated by the classical space vector modulation (SVM) strategy generates common-mode voltage (CMV). The high magnitude and high du/dt of the CMV causes serious problems such as motor damage, electromagnetic noise and many others. In this paper, an improved SVM strategy is proposed by replacing the zero vectors with suitable couple of active ones that substantially eliminate the CMV. Theoretical analysis proves that the proposed strategy can reduce the amplitude of the CMV to half of the original value. In addition, the quality of the input and output waveforms is not affected by extra active vectors. Simulation and experimental results demonstrate the feasibility and effectiveness of the proposed strategy are shown
FINITE ELEMENT ANALYSIS OF THERMAL STRESSES IN A PAD-DISC BRAKE SYSTEM (A REVIEW)
Authors: Adamowicz Adam , Grzes Piotr 
Published: March 2014

Abstract
Rapid temperature change in components of the sliding systems induces thermal stresses due to thermal expansion. This effect is particularly evident in disc brakes working under high thermal loads. This paper deals with the finite element modelling of frictional heating process in disc brakes and clutches to study the temperature and stress distributions during operation
DYNAMIC TESTING OF COPPER MATERIAL – NUMERICAL APPROACH
Authors: Baranowski Paweł , Małachowski Jerzy , Mazurkiewicz Łukasz , Damaziak Krzysztof 
Published: March 2014

Abstract
Split Hopkinson pressure bar (SHPB) is one of the most important and recognisable apparatus used for characterizing the dynamic behaviour of various materials. Incident pulse generated one the incident bar usually have a rectangular shape, which is proper for some materials but for others is not. Therefore, several methods of shaping the incident pulse are used for obtaining constant strain rate conditions during tests. Very often pulse shapers made of copper or similar material are implemented due to its softness properties. In this paper such material was investigated using the FE model of SHPB. Its mechanical behaviour was characterised with and without copper disc between the striker and incident bar. Numerical simulations were carried out using explicit LS-DYNA code. Two different methods were used for modelling the copper sample: typical finite Lagrangian elements and meshless Smoothed Particle Hydrodynamics (SPH) method. As a result of two techniques used axial stress-strain characteristics were compared for three different striker’s velocity with an influence of the copper pulse shaper taking into account. Finally, FE and SPH method was compared with taking into consideration: the efficiency, computer memory and power requirements, complexity of methods and time of simulation
IMAGE OF THE SURFACE OF GAS TURBINE BLADE AS A DIAGNOSTIC SIGNAL
Authors: Błachnio Józef , Zabrocka Iwona 
Published: March 2014

Abstract
This paper outlines a non-destructive method that is suitable for evaluation of condition demonstrated by gas turbine blades and is based on digital processing of images acquired from the blade surface in visible light. To enable high clearness of these images the particular attention is paid to the problem of how to provide optimum conditions for investigations and mitigate geometrical distortions of images acquired from maintenance operations. The paper demonstrates that there are relationships between operation lifetime of blades and discoloration of their surfaces due to overheating of the blade material. These relationships are revealed by digital analysis of images acquired for the blade surfaces and expressed as statistical parameter of the first and second order. To improve unambiguity of the analysis results a low-pass filter was applied. It was demonstrated that these relationships are suitable for evaluation how much the status of the blade material microstructure is altered
STRENGTH AND FRACTURE TOUGHNESS OF THE WELDED JOINTS MADE OF HIGH-STRENGTH FERRITIC STEEL
Authors: Dzioba Ihor , Pała Tadeusz , Valkonen Ilkka 
Published: March 2014

Abstract
The paper presents experimental results of the characteristics of strength and fracture toughness of the material from the different zones of welded joints made of different participation of the linear welding energy. Strength characteristics and fracture toughness were determined in the weld material, in the area of fusion line, in the material of the heat affected zone and in the base material
CONTACT INTERACTION OF RIGID STAMP AND INFINITE ORTHOTROPIC PLATE WITH CLOSE TO ELLIPTICAL HOLE
Authors: Kotsyuba Andriy 
Published: March 2014

Abstract
Numerical method of finding the contact stresses under the stamp of complex shape for the case of orthotropic plates with close to an elliptical hole, which based on constructed in Bozhydarnik et al., (2007) algorithm, is developed. The distribution of contact stresses under the stamp, which shape matches the shape of the hole, is investigated
EXPERIMENTAL SETUP FOR TESTING ROTARY MR DAMPERS WITH ENERGY HARVESTING CAPABILITY
Authors: Sapiński Bogdan , Węgrzynowski Marcin 
Published: March 2014

Abstract
The experimental setup has been developed for laboratory testing of electromechanical energy transducers and rotary magnetorheological (MR) dampers. The design objectives are outlined and the parameters of the key elements of the setup are summarised. The structure of the mechanical and measurement and control systems is presented. Results of functional testing of a newly developed transducer and a MR rotary damper are summarised
Learning to Take Scripture Seriously
Authors: Garner Evan D. 
Published: March 2014

Abstract
This paper is mainly the product of an international conference on sexuality and scripture that was held in Limuru, Kenya, during the summer of 2013. For almost two-thousand years, Christians have held different views on the role and authority of scripture in the Church. Those differences were made manifest by the participants in this conference. Largely because of their diverse cultural backgrounds, leaders from different parts of the global Christian community continue to use the Bible in the debates over human sexuality in remarkably different ways. This paper identifies the Contextual Bible Study method as a promising hermeneutical tool for finding agreement in the interpretation of scripture among individuals from such diverse backgrounds and from competing theological positions. After reviewing the Contextual Bible Study method and its applicability to the issue of human sexuality, the paper suggests the benefits of leaving behind familiar arguments over those passages of scripture most often cited in these debates in favour of a robust discussion of yet largely unexplored theological arguments.
Learning From Indaba: Some Lessons For Post-Pilling Conversations
Authors: Bridger Francis , Goddard Andrew 
Published: March 2014

Abstract
The Church of England’s Pilling Report recommends a series of ‘facilitated conversations at a national and diocesan level’ on the subject of human sexuality, similar to the Continuing Indaba Project in the Anglican Communion. In this article Goddard and Bridger, who were members of an independent ecumenical team that observed at first hand the work of Continuing Indaba over a period of three years, trace the history and working of the project. They offer a critical assessment of its strengths and weaknesses, drawing upon conflict resolution theories and setting indaba in the context of these. They argue that although indaba undoubtedly offers valuable insights and practices, it must learn from a wider body of knowledge and resolution approaches, and must be complemented by methodologies that give a sufficient place to theology. This is necessary in order to address fundamental questions involved in dealing with theological and cultural diversity. They conclude that only this will offer an adequate basis for the post-Pilling process to move forward.
Some Ostrowski’S Type Inequalities For Functions Whose Second Derivatives Are S-Convex In The Second Sense
Authors: Set Erhan , Sarikaya, Mehmet Zeki , Ozdemir M. Emin 
Published: March 2014

AbstractSome new inequalities of the Ostrowski type for twice differentiable mappings whose derivatives in absolute value are s-convex in the second sense are given
Maximal Classes For Lower And Upper Semicontinuous Strong Świątkowski Functions
Authors: Szczuka Paulina 
Published: March 2014

AbstractIn this paper, we characterize the maximal additive and multiplicative classes for lower and upper semicontinuous strong Świątkowsk functions and lower and upper semicontinuous extra strong Świątkowski functions. Moreover, we characterize the maximal class with respect to maximums for lower semicontinuous strong Świątkowski functions and lower and upper semicontinuous extra strong Świątkowski functions.
Uniformly Continuous Superposition Operators In The Space Of Functions Of Bounded n-Dimensional Φ-Variation
Authors: Bracamonte Mireya , Ereú Jurancy , Giménez José , Merentes Nelson 
Published: March 2014

AbstractWe prove that if a superposition operator maps a subset of the space of all metric-vector-space-valued-functions of bounded n-dimensional Φ-variation into another such space, and is uniformly continuous, then the generating function of the operator is an affine function in the functional variable
The Explicit Determinations Of Dual Plane Curves And Dual Helices In Terms Of Its Dual Curvature And Dual Torsion
Authors: Lee Jae Won , Choi Jin Ho , Jin Dae Ho 
Published: March 2014

AbstractIn this paper, we give the explicit determinations of dual plane curves, general dual helices and dual slant helices in terms of its dual curvature and dual torsion as a fundamental theory of dual curves in a dual 3-space
Some Fixed Point Results For Mappings In G-Metric Spaces
Authors: Mohanta S. K. , Mohanta Srikanta 
Published: March 2014

AbstractWe prove a common fixed point theorem for a pair of self mappings satisfying a generalized contractive type condition in a complete G-metric space. We also deal with other fixed point results for a self mapping in the setting of generalized metric space. Our results generalize some recent results in the literature
Paleocene sedimentary record of ridge geodynamics in Outer Carpathian basins (Subsilesian Unit)
Authors: Waśkowska Anna , Cieszkowski Marek , Golonka Jan , Kowal-Kasprzyk Justyna 
Published: March 2014

Abstract
The stratigraphic position of the Goryczkowiec Sandstone reflects the Paleocene ridge geodynamics in the Outer Carpathian basins. The Goryczkowiec Sandstone was deposited on the slope of a ridge, known as the Subsilesian Sedimentary Area that originated during reorganization of the Outer Carpathian realm. A Paleocene age of this sandstone, documented clearly by autochthonous foraminiferal and algal assemblages indicates the time of the final formation of the Subsilesian Ridge. Abundant calcareous material of biogenic origin was transported by turbidity currents into deeper zones. This material includes fragments of carbonate buildups represented by algae, bryozoans and other organisms growing in the shallower part of the ridge. The Goryczkowiec Sandstone, previously known as the Szydłowiec Sandstone, is here redefined as a new lithostratigraphic unit within the Subsilesian Sedimentary Area in the marginal Outer Carpathians in Poland. The new name clarifies the ambivalence in the lithostratigraphic nomenclature
Glyphosate, pathways to modern diseases II: Celiac sprue and gluten intolerance
Authors: Samsel Anthony , Seneff Stephanie 
Published: March 2014

ABSTRACT
Celiac disease, and, more generally, gluten intolerance, is a growing problem worldwide, but especially in North America and Europe, where an estimated 5% of the population now suffers from it. Symptoms include nausea, diarrhea, skin rashes, macrocytic anemia and depression. It is a multifactorial disease associated with numerous nutritional deficiencies as well as reproductive issues and increased risk to thyroid disease, kidney failure and cancer. Here, we propose that glyphosate, the active ingredient in the herbicide, Roundup®, is the most important causal factor in this epidemic. Fish exposed to glyphosate develop digestive problems that are reminiscent of celiac disease. Celiac disease is associated with imbalances in gut bacteria that can be fully explained by the known effects of glyphosate on gut bacteria. Characteristics of celiac disease point to impairment in many cytochrome P450 enzymes, which are involved with detoxifying environmental toxins, activating vitamin D3, catabolizing vitamin A, and maintaining bile acid production and sulfate supplies to the gut. Glyphosate is known to inhibit cytochrome P450 enzymes. Deficiencies in iron, cobalt, molybdenum, copper and other rare metals associated with celiac disease can be attributed to glyphosate’s strong ability to chelate these elements. Deficiencies in tryptophan, tyrosine, methionine and selenomethionine associated with celiac disease match glyphosate’s known depletion of these amino acids. Celiac disease patients have an increased risk to non-Hodgkin’s lymphoma, which has also been implicated in glyphosate exposure. Reproductive issues associated with celiac disease, such as infertility, miscarriages, and birth defects, can also be explained by glyphosate. Glyphosate residues in wheat and other crops are likely increasing recently due to the growing practice of crop desiccation just prior to the harvest. We argue that the practice of "ripening" sugar cane with glyphosate may explain the recent surge in kidney failure among agricultural workers in Central America. We conclude with a plea to governments to reconsider policies regarding the safety of glyphosate residues in foods
Sulfur mustard induced oxidative stress and its alteration using asoxime (HI-6)
Authors: Pohanka Miroslav , Sobotka Jakub , Svobodova Hana , Stetina Rudolf 
Published: March 2014

ABSTRACT
Sulfur mustard (SM) is a blister agent with cytotoxic mechanism of action. There is no suitable treatment based on administration of an antidote. In this study, Wistar rats were exposed to SM in doses of 0-40 mg/kg body weight and treated with the compound HI-6. The treatment provided no significant effect on ferric reducing antioxidant power of blood and plasma. However, HI-6 caused an increase in the level of thiobarbituric acid reactive substances. This stressogenic response was presumably the cause of the significant elevation of the blood level of both glutathione reductase and reduced glutathione. HI-6 appears to be suitable for enhancing prophylactically oxidative stress protection from small oxidative insult
Antioxidant action and cytotoxicity on HeLa and NIH-3T3 cells of new quercetin derivatives
Authors: Danihelová Martina , Veverka Miroslav , Šturdík Ernest , Jantová Soňa 
Published: March 2014

ABSTRACT
Quercetin is a natural polyphenol with proven health beneficial activities. In this study 15 new quercetin derivatives were prepared with the aim to enhance their bioavailability. Modification of their physicochemical properties could herewith improve the action in cells. The prepared compounds were tested for their antioxidant and cytotoxic activity. The ability to scavenge free radicals as well as ferric reducing antioxidant power of the new derivatives was not better than that of unmodified quercetin. But for acetylated esters a better cytotoxic activity was found on human cervical cancer cells HeLa than for the initial molecule. The best effect revealed chloronaphtoquinone quercetin (IC50=13.2 μM). For this compound comparable cytotoxic action on non-cancer murine fibroblast cells was detected (IC50=16.5 μM). The obtained results indicate that appropriate lipophilization of the quercetin molecule could improve its cytotoxic action in cells, probably due to its enhanced bioavailability
A Comparative Analysis of the Price Index in Transition Countries in the Time of Globalisation
Authors: Pejović Igor 
Published: March 2014

Abstract
Globalisation with all its features can be divided in two segments - good and bad. When we look at the good side of globalisation, it is obvious that it has erased boundaries between countries in terms of trade, education, knowledge sharing, and other new technologies, while on the other hand, the bad side is that it has created a considerable gap between developed and developing countries, then different types of commercial, political and other conditioning, and dependence on strong, developed states. A great contribution to the negative part of globalisation was of economic instability that occurred at the beginning of this century and which consequences are still present in the world. In this article, we presented the impact of economic instability on the price index trough a comparative analysis of transition countries such as Montenegro, Serbia and Croatia over a period of five years (Croatia has just recently become a member of the European Union and due to that fact it was included in this study). The survey covered price indices relating to the prices of industrial products for the domestic markets, consumer price indices, indices of the hospitality services and the prices of the agricultural products.
Distribution and phenological data of some bird species of Uganda
Authors: Bankovics Attila , Török János , Michl Gábor , Péczely Péter , Csörgő Tibor 
Published: March 2014

Abstract
During a twenty five days trip in Uganda a brief faunistic survey of birds, mammals and reptiles was performed. Altogether 380 bird species were observed in six National Parks and some other protected areas in the summer of 2012. From these 64 bird species are discussed here selected according the following criteria: rarity, occurrence in a new habitat or geographic area, and emergence of novel breeding phenological data of certain species. Our new records of House Sparrow (Passer domesticus) along the Kazinga Channel (between Lake Edward and Lake George) are outside the current distribution range of the species. The House sparrow expanded its area about 800 km toward west from their first record in Nairobi in 1992. Our new records on White-tailed Ant-thrush (Neocossyphus poensis), Red-tailed Ant-thrush (Neocossyphus rufus), Papyrus Yellow Warbler (Chloropeta gracilirostris), Shelley’s Rufous Sparrow (Passer shelley) and Streaky Seedeater (Serinus striolatus) also require the correction of distribution maps of this species in Uganda. In addition we give some remarks on the breeding phenology of Mountain Wagtail (Motacilla clara), Cassin’s Grey Flycatcher (Muscicapa cassini) and Northern Red Bishop (Euplectes franciscanus). Our recent observational data of African Skimmer (Rynchops flavirostris) may have importance for the Bonn Convention. These observations might be important from conservation and ecotouristic point of views
Treatment of tongue cavernous haemangioma with direct puncture and sclerotization with ethanol
Authors: Seruga Tomaz , Lucev Jernej , Jevsek Marko 
Published: March 2014

Abstract
Background. Haemangiomas of tongue are rare type of malformations. They can be treated mostly conservatively but in some cases they need more aggressive treatment with preoperative intra arterial embolization and surgical resection. Lesions of tongue that are localized superficially can also be treated with direct puncture and injection of sclerosing agent (absolute ethanol).
Case report. We present a case of a 48 years old female patient, where we performed embolization of cavernous haemangioma with mixture of absolute ethanol and oil contrast. After the procedure the patient received analgetics and antioedematous therapy. After the sclerotization the planed surgery was abandoned. Control MRI examinations 6 and 12 months after the procedure showed only a small remnant of haemangioma and no signs of a larger relapse.
Conclusions. In our case the direct puncture of haemangioma and sclerotherapy with ethanol proved to be a safe and effective method to achieve preoperative devascularization of the lesion. Direct puncture of the lesion is not limited by the anatomy of the vessels or vasospasm, which can occur during the intra-arterial approach.
Solution of the Dirac equation with magnetic monopole and pseudoscalar potentials
Authors: Aghaei Sohrab , Chenaghlou Alireza 
Published: March 2014

AbstractThe Dirac equation in the presence of the Dirac magnetic monopole potential, the Aharonov-Bohm potential, a Coulomb potential and a pseudo-scalar potential, is solved by separation of variables using the spinweighted spherical harmonics. The energy spectrum and the form of the spinor functions are obtained. It is shown that the number j in spin-weighted spherical harmonics must be greater than $$\left| q \right| - \tfrac{1} {2}$$.
Event order generation using Reference Event based qualitative Temporal (REseT) relations in Time Event Ontology
Authors: Uma V. , Aghila G. 
Published: March 2014

AbstractOWL (Web Ontology Language) is the standard language for Semantic Web and is used in defining ontologies for Web. Temporal event data are ubiquitous in nature. Temporal data can be represented qualitatively using temporal relations in OWL, enabling temporal ordering of events which plays a vital role in task planners. The basic Allen’s temporal interval relations can be used to describe relations in OWL. Allen’s interval algebra is a well known formalism used to represent and reason the temporal knowledge. In this work, Allen’s interval algebra is extended by Reference Event based Temporal (REseT) relations to reduce the ambiguity in the before relation. The extended formalism is used in the representation of relations between time intervals and the viability of ordering of events in ontology is elucidated. This paper proposes a temporal knowledge representation and reasoning based event ordering system which helps in the temporal ordering of events. The advantage of this method is that it does not introduce any additional constructs in OWL and hence the existing reasoning tools and DL based query languages are capable of generating the linear order of events. The system is investigated experimentally using the COW (Correlates of War) dataset and has been evaluated using the Percent_ Similarity measure.
Skin Diseases and Sexually Transmitted Infections among Patients with HIV infection/AIDS referred at the City Institute for Skin and Venereal Diseases in Belgrade: a Case Series of 38 Patients
Authors: Bjekić Milan , Šipetić Sandra 
Published: March 2014

AbstractHuman immunodeficiency virus (HIV) infection may be associated with a wide spectrum of dermatological disorders. This study reports the prevalence of dermatologic diseases and sexually transmitted infections among 38 HIV-infected adults who consecutively sought treatment at the City Institute for Skin and Venereal Diseases in Belgrade. Patients were referred by their primary HIV providers between January 2011 and June 2012. More than 80% of patients were men who have sex with men. The most prevalent diseases were anogenital warts (36.8%) and syphilis (34.2%), followed by folliculitis and dermatophyte infections (7.9% each). Thirty-four patients (89.5%) were on highly active antiretroviral therapy (HAART) before the first visit to the dermatologist. Although, the pattern of skin disorders was consistent with literature data, high prevalence of sexually transmitted infections among our patients was rather peculiar. These facts point to the need for education of sexually active persons with HIV about the consequences of sexually transmitted infections, risks of transmission of drug resistant HIV strains, as well as safe sex practice and consistent condom use.