bluuebunny/crossref_metadata_2025 huggingface dataset:
Synthesis and Optical Properties of Sb-Doped CdS Photocatalysts and Their Use in Methylene Blue (MB) Degradation
Authors: Ertis Irem Firtina , Boz Ismail
Published: December 2016

Sb-CdS catalysts with good crystalline structure were prepared by chemical precipitation and hydrothermal method. The results showed that hydrothermal treatment is an effective method to prepare CdS based catalysts of hexagonal structure. Single Sb2S3 catalyst has spherical and Sb doped CdS catalysts have hexagonal structure. Sb doped CdS which is prepared by Na2S with chemical precipitation, has cubic structure. The band gap energies of Sb doped CdS photocatalysts were estimated using UV-visible reflectance spectra to be about the range of 2.35–2.57 eV. In particular, the photoluminescence (PL) spectra show enhancing emission peaks that strongly decrease with a doping Sb where the catalyst was prepared with ethylenediamine (EDA) and thioacetamide (TAA), has shown the lowest luminescence intensity. Photocatalytic degradation of methylene blue was carried out using Sb doped and Sb2S3-CdS binary catalysts under a 400 W medium-pressure mercury lamp of visible light irradiation (λ>420 nm). Higher photocatalytic degradation was achieved by adding Sb to CdS catalyst with using hydrothermal method and EDA as coordinating agent compare with the other catalysts. In this case the photocatalytic degradation of the Sb-CdS-EDA-TAA photocatalyst after 4 h irradiation time was about 84 %.
Plasma concentrations of osteocalcin are associated with the timing of pubertal progress in boys
Authors: Schündeln Michael M. , Bäder Lena , Kiewert Cordula , Herrmann Ralf , Führer Dagmar , Hauffa Berthold P. , Grasemann Corinna
Published: December 2016

Background:

Animal models have shown that the skeletal hormone osteocalcin stimulates testicular testosterone synthesis. To assess whether osteocalcin might be a useful marker to detect pubertal development disorders, we examined osteocalcin plasma concentrations in children and adolescents with and without disorders of pubertal development.

Methods:

Osteocalcin concentrations were investigated in a total of 244 patients with endocrine disorders (122 males, mean age: 11.87+3.77 years), including patients with precocious puberty and constitutional delay of puberty.

Results:

Osteocalcin concentrations were highest among adolescents with precocious puberty and advanced pubertal development (120.60±45.22 ng/mL), while the concentrations were lowest among patients with constitutional delay of puberty (102.20±37.13 ng/mL). Overall, osteocalcin concentrations were strongly correlated with markers of bone metabolism.

Conclusions:

Although plasma osteocalcin concentrations are associated with pubertal development in boys, it does not appear to be a useful diagnostic marker for altered pubertal development.
Differential toxicities of albendazole and its two main metabolites to Balb/c 3T3, HepG2, and FaO lines and rat hepatocytes
Authors: Radko Lidia , Minta Maria , Stypuła-Trębas Sylwia
Published: December 2016

Introduction: The cytotoxicity of anthelmintic agent, albendazole (ABZ) and its two major metabolites, sulfoxide (ABZSO) and sulfone (ABZ-SO2), on non-hepatic Balb/c 3T3 line, two hepatoma cell lines (FaO, HepG2), and isolated rat hepatocytes was investigated. Material and Methods: Cell cultures were exposed for 24, 48, and 72 h to eight concentrations of the compounds ranging from 0.05 to 100 μg/mL (ABZ) and from 0.78 to 100 μg/mL (ABZ-SO and ABZ-SO2). Three different assays were applied in which various biochemical endpoints were assessed: lysosomal activity - neutral red uptake (NRU) assay, proliferation - total protein contents (TPC) assay and lactate dehydrogenase (LDH) leakage assay. Results: The most toxic was albendazole whose EC50 values calculated from the concentration effect curves ranged from 0.2 to 0.5 μg/mL (Balb/c 3T3 ) and from 0.4 to 73.3 μg/mL (HepG2). Rat hepatoma line and isolated rat hepatocytes were less sensitive to the impact of ABZ. Toxic action expressed as EC50 was recorded after 72 h exposure only in LDH release assay at 0.8 μg/mL and 9.7 μg/mL respectively. The toxicity of metabolites was much lower. The most sensitive to ABZ-SO were fibroblasts and EC50-72h values were similar in all three assays used, i.e. NRU (14.1 μg/mL), TPC (15.8 μg/mL), and LDH (20.9 μg/mL). In the case of ABZ-SO2 the mean effective concentrations were the highest, and could be reached only in one LDH assay. These values (μg/mL) were as follows: 65.3 (FaO), 65.4 (HepG2), 75.8 (hepatocytes), and 77.4 (Balb/c 3T3). Conclusion: The differences in in vitro toxicity of albendazole depend on metabolic ability of the cellular models. Primary cultured rat hepatocytes represent a valuable tool to study the impact of biotransformation on the cytotoxicity of drugs.
The comparative analysis of selected interactive data presentation techniques on the example of the land use structure in the commune of Tomice
Authors: Król Karol , Prus Barbara
Published: December 2016

The authors present the results of a comparative analysis of selected techniques and programming tools for building interactive data presentation in the form of diagrams and maps generated in the browser.

The results of an inventory of land use structure, which are a part of a geographic information system database of the commune of Tomice in district of Wadowice, were employed as input data.

The research has shown that the tested tools have a similar design capacity; which makes it difficult to determine which of them is the best. Different factors contribute to choosing a particular tool. They include technical specification, project budget, license conditions, technical support and visualization possibilities.
Effect of Folk Dance Training on Blood Oxidative Stress Level, Lipids, and Lipoproteins
Authors: Okdan Bora , Nalcakan Gulbin Rudarli , Onur Ece , Oran Arzu , Nalcakan Mesut
Published: December 2016

Introduction. Folk dance is a form of physical activity which helps develop the ability to use the whole body in a coordinated way with music, and folk dancers’ characteristics vary according to the particular type of dance practised in a given geographic region. The aims of the study were to evaluate the effects of 12-week folk dance training on blood oxidative stress level, lipids, lipoproteins, as well as muscle damage markers and to define some physical and physiological properties of folk dancers. Material and methods. Thirty-eight healthy male folk dancers aged 21-28 years having an average of 11 years of dance training experience voluntarily participated in the study. All of the physical and physiological measurements and the blood analysis were performed twice, before and after the training period which focused on different regional dances (Caucasus, Bar, Zeybek, Spoon Dance, Thracian dances, and Horon). The training was done 2 hours per day (a total of 10 hours a week), during a 12-week-long period. Results. All the blood parameters were found to be within the specified reference ranges. The training programme had no significant effect on the blood lipid profile, whereas it was found to have positive effects on body fat (p ≤ 0.012), peak oxygen consumption (VO2peak; p = 0.000), muscle damage markers (creatine kinase, Δ% = −19.6), and total antioxidant capacity (p ≤ 0.002). Conclusions. Regular folk dance training was found to have positive effects on body fat, VO2peak, blood total antioxidant capacity, and muscle damage markers. Based on these results, the community should be encouraged to perform folk dance as a recreational physical activity, and public awareness should be raised about the health benefits of practising folk dances.
Pharmacokinetic problems in peritoneal drug administration: an update after 20 years
Authors: Flessner Michael F.
Published: December 2016

Intraperitoneal chemotherapy has demonstrated significant pharmacologic and clinical advantage over traditional intravenous administration for cancers that are restricted to the peritoneal cavity. The combination of cytoreductive surgery with hyperthermic intraperitoneal chemotherapy (HIPEC) has become the standard technique used to fight ovarian and gastrointestinal cancers in many centers. However, challenges remain for HIPEC to contact the entire peritoneal surface, penetrate the tumor tissue, and transport to the lymphatics and other metastatic sites. New innovations in delivery technique, such as heated aerosol, and in delivery molecules, such as microparticles, nanoparticles, nanogels, and tumor-penetrating peptides are being tested in animal models and will likely soon be in human trials. Improvements in overall care, such as the recent clinical trial of an oral agent for maintenance therapy in ovarian carcinoma, will continue in this field for the next 20 years.
Synroc tailored waste forms for actinide immobilization
Authors: Gregg Daniel J. , Vance Eric R.
Published: December 2016

Since the end of the 1970s, Synroc at the Australian Nuclear Science and Technology Organisation (ANSTO) has evolved from a focus on titanate ceramics directed at PUREX waste to a platform waste treatment technology to fabricate tailored glass–ceramic and ceramic waste forms for different types of actinide, high- and intermediate level wastes. The particular emphasis for Synroc is on wastes which are problematic for glass matrices or existing vitrification process technologies. In particular, nuclear wastes containing actinides, notably plutonium, pose a unique set of requirements for a waste form, which Synroc ceramic and glass-ceramic waste forms can be tailored to meet. Key aspects to waste form design include maximising the waste loading, producing a chemically durable product, maintaining flexibility to accommodate waste variations, a proliferation resistance to prevent theft and diversion, and appropriate process technology to produce waste forms that meet requirements for actinide waste streams. Synroc waste forms incorporate the actinides within mineral phases, producing products which are much more durable in water than baseline borosilicate glasses. Further, Synroc waste forms can incorporate neutron absorbers and238U which provide criticality control both during processing and whilst within the repository. Synroc waste forms offer proliferation resistance advantages over baseline borosilicate glasses as it is much more difficult to retrieve the actinide and they can reduce the radiation dose to workers compared to borosilicate glasses. Major research and development into Synroc at ANSTO over the past 40 years has included the development of waste forms for excess weapons plutonium immobilization in collaboration with the US and for impure plutonium residues in collaboration with the UK, as examples. With a waste loading of 40–50 wt.%, Synroc would also be considered a strong candidate as an engineered waste form for used nuclear fuel and highly enriched uranium-rich wastes.
Radiolytic syntheses of hollow UO2 nanospheres in Triton X-100-based lyotropic liquid crystals
Authors: Wang Yongming , Chen Qingde , Shen Xinghai
Published: December 2016

Hollow nanospheres (ϕ: 60–80 nm, wall thickness: 10–20 nm), consisted of UO2 nanoparticles (ϕ: 3–5 nm), were successfully prepared in a Triton X-100-water (50:50, w/w) hexagonal lyotropic liquid crystal (LLC) by γ-irradiation, where water soluble ammonium uranyl tricarbonate was added as precursor. The product was stable at least up to 300°C. Furthermore, whether the nanospheres were hollow or not, and the wall thickness of the hollow nanospheres could be easily controlled via adjusting dose rate. While in the Triton X-100 based micellar systems, only solid nanospheres were obtained. At last, a possible combination mechanism containing adsorption, aggregation and fracturing processes was proposed.
Developing methodologies for source attribution: glass phase separation in Trinitite using NF3
Authors: Koeman Elizabeth C. , McNamara Bruce K. , Smith Frances N. , Simonetti Antonio , Burns Peter C.
Published: December 2016

This study details thermal reactions between glasses, common minerals, and Trinitite post-detonation material with the fluorinating agent nitrogen trifluoride (NF3). The ultimate goal of our investigation is to develop a relatively rapid method for the effective separation of bomb components from complex matrices resulting from a nuclear explosion. Trinitite samples, silicate minerals (quartz; plagioclase and microcline), amorphous SiO2, calcite, a natural glass (obsidian), and two synthetic glasses were characterized extensively before and after the fluorination to fully understand the effects of the NF3 thermal treatment. Samples were reacted with NF3 using a combined thermogravimetric (TG) differential thermal analysis (DTA) unit, as well as in a stainless steel bomb reactor connected to a fluorination line. Subsequent to the NF3 treatment, samples were imaged by scanning electron microscopy in order to document changes in grain size and morphology. Energy dispersive spectroscopy was performed to determine changes in major element abundances. Results demonstrate that rates of reaction are dependent on grain size, temperature, pressure, and time of fluorination. All mineral samples experienced mass loss during fluorination. Specifically, amorphous SiO2 (~90% mass loss) experienced the most while calcite experienced the least (~18%). Major element analysis reveals that mass loss is attributable to the volatilization of silica (SiO2) in Si-bearing phases, or sample decomposition in calcite due to fluorination. Results for fluorinated samples of Trinitite demonstrate that mass loss occurs at different rates for each sample, but each sample experienced an expected large decrease in Si content (resulting from volatilization of SiF4). Hence, the concentration of metals in the residual material increased due to the volatilization of Si. These results validate that this thermal-fluorination technique allows the separation of silica from minerals (i.e. naturally occurring crystalline materials) and glasses (i.e. amorphous materials), leaving behind non-volatile fluorinated species and refractory phases. The results from our investigation clearly indicate that the NF3 treatment of nuclear materials is a technique that provides effective separation of bomb components from complex matrices (e.g. post-detonation samples), which will aid with rapid and accurate source attribution.
Epilepsy and vitamin D: a comprehensive review of current knowledge
Authors: Miratashi Yazdi Seyed Amir , Abbasi Mehdi , Miratashi Yazdi Seyed Masoud
Published: December 2016

Vitamin D has been considered as neurosteroid, and its pivotal role in neuroprotection, brain development, and immunomodulation has been noticed in studies; however, our knowledge regarding its role in neurological disorders is still developing. The potential role of vitamin D in the pathophysiology and treatment of epilepsy, as one the most prevalent neurological disorders, has received less attention in recent years. In this article, we review the possible relationship between vitamin D and epilepsy from different aspects, including the action mechanism of vitamin D in the central nervous system and ecological and epidemiological findings. We also present the outcome of studies that evaluated the level of vitamin D and the impact of administrating vitamin D in epileptic patients or animal subjects. We also review the current evidence on interactions between vitamin D and antiepileptic drugs.
Reaching the Objectives of Sustainable Development on the Basis of the Creative Industries – A South and Eastern European Analysis
Authors: Mihai Costică , Borza Mioara , Talmaciu Mihai
Published: December 2016

The reduction of the development gap of South and East European economy compared with the rest of the developed countries represent an important condition to achieve the goal of „healthy development“ of European Union. High level of competitiveness in West European industries as well as new policy of sustainable development causes a rethinking of strategy of individual countries. Creative industries may contribute to the efficient utilization of local resources and individual characteristics. Using the culture like an “engine” of regional development, in South and Eastern Europe, countries can generate many positive and lasting effects on these economies. This article presents the role and evolution of creative goods and industries in South and Eastern European countries, and aims to prefigure their impact on sustainable development of these regions. The involvement of these goods in international trade may improve or rehabilitate the position of different economies at European level.
The Effect of Landslide on Gas Pipeline
Authors: Valkovič Vojtech , Jančo Roland , Frydrýšek Karel
Published: December 2016

The present paper deals with the calculation of stresses on the pipeline system embedded on a flexible substrate which is burdened by a landslide. As well as taking into account the probability of the influences acting on the pipe as wall thickness, and others.
La « sémantique de corpus », le programme inachevé de Sémantique structurale
Authors: Ablali Driss
Published: December 2016

Cette contribution porte exclusivement sur la spécificité du projet sémiotique développé dans
La sémiotique de Greimas : un projet scientifique de long terme
Authors: Fontanille Jacques
Published: December 2016

Greimas définissait sa sémiotique comme un « projet scientifique », mettant ainsi l’accent sur une construction en cours. Il nous faut donc comprendre pourquoi elle se présente comme un programme ouvert dans de multiples directions. La sémiotique de Greimas définit une série de problèmes à traiter, et pose des jalons au très long terme. Greimas lui-même ne traite qu’une partie de ces problèmes, et les autres restent en attente des réponses que ses successeurs peuvent apporter. Dans cette perspective, il avait lui-même encouragé ses collaborateurs à se répartir les différentes voies ouvertes dans son programme. Ces différentes évolutions sont connues : la sémiotique subjectale, la sémiotique tensive, la sémiotique morpho-dynamique, la sociosémiotique, la sémiotique de la perception, notamment. Il est donc possible aujourd’hui d’évaluer les effets de ces parcours de recherche. Mais de nombreux problèmes restent encore ouverts : le parcours génératif de l’expression, la diversité, les conditions et l’instabilité des sémioses, le dialogue avec les autres « sciences du sens ». Et enfin, le projet lui-même doit être reconfiguré et mis à jour sous toutes les dimensions de son ancrage dans le monde d’aujourd’hui, près de soixante ans après sa conception.
Language and the game of chess
Authors: Ducard Dominique
Published: December 2016

The comparison between a game, in particular the game of chess, and language, has a long tradition in philosophy and in language sciences. Greimas was thus following in the wake of his predecessors Saussure, Hjelmslev, and Wittgenstein when he put forward a semiotic view of this analogy. I shall review and comment on the texts of these three earlier thinkers as a way of introducing the views of Greimas and examining the shift in his thinking and the position he adopts. An interpretative reading of the brief article he devoted to the question enables us, moreover, to underline what the semiotic action of theorising language actually consisted of, in its method and epistemology, and also to show that underneath the demand for scientificity lies a “quête inquiète”

The expression belongs to Denis Bertrand, who very rightly states: “This is why the formalism of Greimas cannot be separated from an ethic. The articulation of significations is inseparable from an unquiet quest for meaning” (Bertrand 1993: 16).

(unquiet quest) regarding the “paraître imparfait” (imperfect appearance) of meaning.
Cognitive rhetoric of effect: energy flow as a means of persuasion in inaugurals
Authors: Potapenko Serhiy
Published: December 2016

Cognitive rhetoric of effect deals with creating a referent’s favourable image throughout four text-forming stages: invention (looking for arguments); disposition (argument arrangement); elocution (verbal ornamentation); and performance, combining the ancient canons of memory and delivery. The cognitive procedures of rhetoric of effect rest on conceptual structures of sensory-motor origin: image schemas, i.e. recurring dynamic patterns of our perceptual interactions and motor programmes (Johnson, 1987, p.xiv), and force dynamics, i.e. a semantic category in the realm of physical force generalized into domains of internal psychological relationships and social interactions (Talmy, 2000, p.409). The embedding of sensory-motor structures into the text-forming stages reveals that cognitive rhetorical effects are created by managing the energy flow, which consists of force and motion transformations denoted by particular linguistic units. The phenomenon is exemplified by the analysis of the way impressions of freedom celebration and freedom defence are formed in the inaugurals of J.F. Kennedy (1961) and G.W. Bush (2005) respectively.
Review of Parasitic Copepods Recorded in Fish from Turkey
Authors: Alaş Ali , Öktener Ahmet , Çakir Türker Dilek
Published: December 2016

This review presents the occurrence of 62 parasitic copepod species from 72 different fish species (64 wild, two cultured, seven from aquarium) from Turkey.

The parasite species list is arranged by providing parasite species name, host fish, location of host fish capture and author, date of published record.

All parasites and their hosts are confirmed with the recent systematic accounts and full taxonomic account according to literature and internet database. Siphonostomatoida with 47 species and Caligidae with 12 species are the dominant order and family among parasitic copepoda with regard to species diversity, host distribution and location.
Food and Feeding of Fishes. What Do We Need to Know?
Authors: Saikia Surjya Kumar
Published: December 2016

Unrevealing food and feeding habits of fishes is the centre of research in aquatic biology, ecology, conservation biology and fisheries. The current practice in feeding ecology of fish accredits it as descriptive ecology, relying primarily on the information of their diet, directly through gut analysis or indirectly by computing some diet based indices. Such methods often mislead in the understanding of the true feeding behaviour of organisms need for more reliable and functional approach. The main objective of feeding ecology is to evaluate feeding behaviour of fish. Recent developments in tools and techniques of analytical research is an opportunity to take up more reliable details by formulating affordable methodical design for recording, modulating and designing suitable approaches for better explanation of the feeding biology in fish.
Neimark-Sacker Bifurcation and Chaotic Behaviour of a Modified Host–Parasitoid Model
Authors: Din Qamar , Gümüş Özlem Ak , Khalil Hammad
Published: December 2016

We study some qualitative behaviour of a modified discrete-time host–parasitoid model. Modification of classical Nicholson–Bailey model is considered by introducing Pennycuick growth function for the host population. Furthermore, the existence and uniqueness of positive equilibrium point of proposed system is investigated. We prove that the positive solutions of modified system are uniformly bounded and the unique positive equilibrium point is locally asymptotically stable under certain parametric conditions. Moreover, it is also investigated that system undergoes Neimark–Sacker bifurcation by using standard mathematical techniques of bifurcation theory. Complexity and chaotic behaviour are confirmed through the plots of maximum Lyapunov exponents. In order to stabilise the unstable steady state, the feedback control strategy is introduced. Finally, in order to support theoretical discussions, numerical simulations are provided.
Synthesis and structural characterization of Mn(II) and Cu(II) complexes with bis(4-(1H-imidazol-1-yl)phenyl)methanone ligands
Authors: Wang Gao-Feng , Zhang Xiao , Liu Zhao-Rong , Wang Yu-Chun , Jiang Hong-Shi , Li Mei-Zhuan , Jiao Jiao , Ma Hui-Xuan , Jiang Xiu-Ping , Han Qiu-Ping
Published: December 2016

Two complexes, {Mn(hfac)2(BIPMO)}
n
(1), {Cu(hfac)2(BIPMO)}
n
(2) [hfac=1,1,1,5,5,5-hexafluoro-pentane-2,4-dionato(–), BIPMO=bis(4-(1H-imidazol-1-yl)phenyl)methanone], with the V-shaped ligands were synthesized and characterized by infrared spectroscopy, elemental analyses, along with single-crystal X-ray diffraction analyses. The X-ray diffraction studies have shown that the metal ions in 1 and 2 are both six-coordinated to two nitrogen atoms of two BIPMO ligands and four oxygen atoms of two hfac ligands to form a distorted octahedral geometry. Each BIPMO ligand acts as a bridging ligand to link two adjacent metal(II) atoms to form a helical chain in the crystal structure.
Synthesis and crystal structure of a cyanido-bridged copper(II)–silver(I) bimetallic complex containing a trimeric {[Ag(CN)2]−}3 anion, [Cu(Dach)2-Ag(CN)2-Cu(Dach)2][Ag(CN)2]3 (Dach=cis-1,2-diaminocyclohexane)
Authors: Nawaz Sidra , Ghaffar Abdul , Monim-ul-Mehboob Muhammad , Tahir Muhammad Nawaz , Alotaibi Mshari A. , Isab Anvarhusein A. , Ahmad Saeed
Published: December 2016

A new cyanido-bridged bimetallic copper(II)–silver(I) complex, [Cu(Dach)2-Ag(CN)2-Cu(Dach)2][Ag(CN)2]3 (1) (Dach=cis-1,2-diaminocyclohexane), has been prepared and characterized by IR spectroscopy and single crystal X-ray analysis. The crystal structure of complex 1 consists of a centrosymmetric trinuclear cation and three non-coordinated [Ag(CN)2]− ions assembled in the form of a trimer, {[Ag(CN)2]−}3. The complex ion is made up of two [Cu(Dach)2]2+ units connected by a bridging [Ag(CN)2]− anion. The copper atom in the complex ion assumes a distorted square pyramidal geometry with CN− nitrogen atoms occupying the apical position. The trinuclear units are joined by hydrogen bonding to form irregular chains.
Biologically active recombinant carp LH as a spawning-inducing agent for carp
Authors: Aizen Joseph , Hollander-Cohen Lian , Shpilman Michal , Levavi-Sivan Berta
Published: December 2016

Currently, spawning is induced in carp species by carp pituitary extract (CPE) and a combination of synthetic agonist of GnRH combined with a dopamine antagonist. The main goal of this study was the production of recombinant gonadotropins (GtHs) on a large scale to serve as an alternative to currently used agents. We produced carp (c) recombinant (r) Lh as a single chain in the methylotrophic yeast Pichia pastoris. Lha subunit was joined with Lhb subunit with a flexible linker of three glycine–serine repeats and six Histidines to form a mature protein, the β-subunit formed the N-terminal part and the α-subunit formed the C-terminal part. The ability of the rcLh to elicit biological response was tested by in vivo stimulation of estradiol (E2) and 17α,20β-dihydroxy-4-pregnen-3-one (DHP) and by its in vivo potency to induce ovulation and spawning induction. rcLh tested in this work significantly enhanced both E2 and DHP secretion in a dose-dependent manner similar to the results obtained with CPE. E2 levels showed a moderate rise following the priming injection and a subsequent decrease during the rest of the trial. DHP levels were only increased after the resolving injection, approximately 5 h before spawning. At the highest dose of rcLh (350 µg/kg BW), the recombinant protein was more efficient than CPE in terms of both spawning success and fertilization rate. It is shown here that rcLh can elicit the secretion of DHP in vivo and actually trigger spawning. These novel findings introduce the potential of utilizing recombinant gonadotropins in aquaculture.
An existence result for a class of nonlinear integral equations of fractional orders
Authors: Agarwala Ravi P. P. , Samet Bessem
Published: December 2016

Using a measure of non-compactness argument, we study in this paper the existence of solutions for a class of functional equations involving a fractional integral with respect to another function. Some examples are presented to illustrate the obtained results.
Unified linear time-invariant model predictive control for strong nonlinear chaotic systems
Authors: Zhang Yuan , Sun Mingwei , Chen Zengqiang
Published: December 2016

It is well known that an alone linear controller is difficult to control a chaotic system, because intensive nonlinearities exist in such system. Meanwhile, depending closely on a precise mathematical modeling of the system and high computational complexity, model predictive control has its inherent drawback in controlling nonlinear systems. In this paper, a unified linear time-invariant model predictive control for intensive nonlinear chaotic systems is presented. The presented model predictive control algorithm is based on an extended state observer, and the precise mathematical modeling is not required. Through this method, not only the required coefficient matrix of impulse response can be derived analytically, but also the future output prediction is explicitly calculated by only using the current output sample. Therefore, the computational complexity can be reduced sufficiently. The merits of this method include, the Diophantine equation needing no calculation, and independence of precise mathematical modeling. According to the variation of the cost function, the order of the controller can be reduced, and the system stability is enhanced. Finally, numerical simulations of three kinds of chaotic systems confirm the effectiveness of the proposed method.
New fixed point results in b-rectangular metric spaces
Authors: Roshan Jamal Rezaei Rezaei , Parvaneh Vahid , Kadelburg Zoran
Published: December 2016

In this work, the class of b-rectangular metric spaces is introduced, some fixed point results dealing with rational type contractions and almost generalized weakly contractive mappings are obtained. Certain examples are given to support the results.
Existence of positive solutions for singular fractional differential equations with infinite-point boundary conditions
Authors: Guo Limin , Liu Lishan , Wu Yonghong
Published: December 2016

In this paper, we investigate the existence of at least three positive solutions to a singular boundary value problem of Caputo's fractional differential equations with a boundary condition involving values at infinite number of points. Firstly, we establish Green's function and its properties. Then, the existence of multiple positive solutions is obtained by Avery–Peterson's fixed point theorem. Finally, an example is given to demonstrate the application of our main results.
On the effect of alpha-admissibility and theta-contractivity to the existence of fixed points of multivalued mappings
Authors: Mınak Gülhan , Altun Ishak
Published: December 2016

In this study, we give some fixed point results for multivalued mappings using α-admissibility and θ-contractivity of multivalued mappings on complete metric spaces. Our results are proper generalizations of some fixed point results related to multivalued contraction. We also provide an example showing this fact. Finally, we obtain some ordered fixed point results for multivalued mappings as corollary.
On a differential system arising in the network control theory
Authors: Brokan Eduard , Sadyrbaev Felix
Published: December 2016

We investigate the three-dimensional dynamical system occurring in the network regulatory systems theory for specific choices of regulatory matrix { { 0, 1, 1 } { 1, 0, 1 } { 1, 1, 0 } } and sigmoidal regulatory function f(z) = 1 / (1 + e-μz), where z = ∑ Wij xj - θ. The description of attracting sets is provided. The attracting sets consist of respectively one, two or three critical points. This depends on whether the parameters (μ,θ) belong to a set Ω or to the complement of Ω or to the boundary of Ω, where Ω is fully defined set.
Bogdanov–Takens and triple zero bifurcations in general differential systems with m delays
Authors: Liu Xia , Wang Jingling
Published: December 2016

This paper mainly concerns the derivation of the normal forms of the Bogdanov–Takens (BT) and triple zero bifurcations for differential systems with m discrete delays. The feasible algorithms to determine the existence of the corresponding bifurcations of the system at the origin are given. By using center manifold reduction and normal form theory, the coefficient formulas of normal forms are derived and some examples are presented to illustrate our main results.
Approximate controllability of a second-order neutral stochastic differential equation with state dependent delay
Authors: Das Sanjukta , Pandey Dwijendra N. , Sukavanam Nagarajan
Published: December 2016

In this paper, the existence and uniqueness of mild solution is initially obtained by use of measure of noncompactness and simple growth conditions. Then the conditions for approximate controllability are investigated for the distributed second-order neutral stochastic differential system with respect to the approximate controllability of the corresponding linear system in a Hilbert space. We construct controllability operators by using simple and fundamental assumptions on the system components. We use the lemma, which implies the approximate controllability of the associated linear system. This lemma is also described as a geometrical relation between the range of the operator B and the subspaces Ni⊥, i = 1, 2, 3, associated with sine and cosine operators in L2([0, a], X) and L2([0, a], LQ). Eventually, we show that the reachable set of the stochastic control system lies in the reachable set of its associated linear control system. An example is provided to illustrate the presented theory.
On new chaotic and hyperchaotic systems: A literature survey
Authors: Lassoued Abir , Boubaker Olfa
Published: December 2016

This paper provides a thorough survey of new chaotic and hyperchaotic systems. An analysis of the dynamic behavior of these complex systems is presented by pointing out their originality and elementary characteristics. Recently, such systems have been increasingly used in various fields such as secure communication, encryption and finance and so on. In practice, each field requires specific performances with peculiar complexity. A particular classification is then proposed in this paper based on the Lyapunov exponent, the equilibriums points and the attractor forms.
Best proximity points of p-cyclic orbital Meir–Keeler contraction maps
Authors: Karpagam Saravanan , Zlatanov Boyan
Published: December 2016

Let (X,d) be a metric space and A1, A2, ..., Ap be nonempty subsets of X. We introduce a self map T on X, called p-cyclic orbital contraction map on the union of A1, A2, ..., Ap and obtain a unique best proximity point of T. That is, a point x ∈ ∪i=1pAi such that d(x,Tx) = dist(Ai, Ai+1), 1 ≤ i ≤ p, where dist(Ai, Ai+1) = inf d(x,y: x ∈ Ai, y ∈ Ai+1).
Common fixed point theorems for cyclic contractive mappings in partial cone b-metric spaces and applications to integral equations
Authors: Zhu Chuanxi , Xu Wenqing , Došenovič Tatjana , Golubovic Zorana
Published: December 2016

In this paper, we introduce the concept of partial cone b-metric spaces as a generalization of partial metric, cone metric and b-metric spaces and establish some topological properties of partial cone b-metric spaces. Moreover, we also prove some common fixed point theorems for cyclic contractive mappings in such spaces. Our results generalize and extend the main results of Huang and Zhang [Cone metric spaces and fixed point theorems of contractive mappings, J. Math. Anal. Appl., 332:1468–1476, 2007], Stanić et al. [Common fixed point under contractive condition of Ćirić's type on cone metric type spaces, Fixed Point Theory Appl., 2012:35, 2012] and Latif et al. [Fixed point results for generalized (α,ψ)‐Meir–Keeler contractive mappings and applications, J. Inequal. Appl., 2014:68, 2014]. Some examples and an application are given to support the usability of the obtained results.
An almost learning curve model for manual assembly performance improvement
Authors: Kleiza Vytautas , Tilindis Justinas
Published: December 2016

In this paper, an almost learning curve (ALC) model is presented. This provides a more accurate approximation of the production data than the traditional log-linear learning curve model. The proposed ALC model is based on the solution of differential equations and still has all the necessary log-linear learning curve function properties. The ALC model was tested on the wiring harness manufacturer production data. Findings suggest that the ALC model approximates data accurately and is superior to the classical learning curve (CLC) for various manufacturing situations. Moreover, the use of the ALC showed an additional insight into the analysis of learning and skill development.
On the stability and Hopf bifurcation of the non-zero uniform endemic equilibrium of a time-delayed malaria model
Authors: Ncube Israel
Published: December 2016

This article considers a time-delayed mathematical model of immune response to Plasmodium falciparum (Pf) malaria. Infected red blood cells display a wide variety of surface antigens to which the body in turn responds by mounting specific immune responses as well as cross-reactive immune responses. The model studied here tracks these infected red blood cells as well as the two types of immune responses. It is assumed that the immune responses are time-delayed, and hence a system of nonlinear delay differential equations is considered. The goal of the paper is to provide a vigorous analysis of the stability and Hopf bifurcation of the non-zero uniform endemic equilibrium of the mathematical model.
ICD Therapy for Primary Prevention in Hypertrophic Cardiomyopathy
Authors: Trivedi Amar ,   Division of Cardiology, Department of Medicine, Northwestern University, Chicago, IL, USA, Knight Bradley P ,   Division of Cardiology, Department of Medicine, Northwestern University, Chicago, IL, USA
Published: December 2016

Hypertrophic cardiomyopathy (HCM) is a common and heterogeneous disorder that increases an individual’s risk of sudden cardiac death (SCD). This review article discusses the relevant factors that are involved in the challenge of preventing SCD in patients with HCM. The epidemiology of SCD in patients is reviewed as well as the structural and genetic basis behind ventricular arrhythmias in HCM. The primary prevention of SCD with implantable cardioverter-defibrillator (ICD) therapy is the cornerstone of modern treatment for individuals at high risk of SCD. The focus here is on the current and emerging predictors of SCD as well as risk stratification recommendations from both North American and European guidelines. Issues related to ICD implantation, such as programming, complications and inappropriate therapies, are discussed. The emerging role of the fully subcutaneous ICD and the data regarding its implantation are reviewed.
O Trabalho em Marx como Antinaturalidade: sobre a oposição entre história e natureza
Authors: Araújo Vitor Vasconcelos
Published: December 2016

Este artigo tem como objetivo apresentar a forma do trabalho em Marx como oposição à dimensão vital da natureza organizada. Discutiremos em O capital a aparição da categoria trabalho como uma forma de transformação dos objetos físicos e naturais a partir do investimento de valor social nas formas imediatas da subsistência nativa dos objetos naturais. Em seguida, mostraremos que a apresentação marxiana se distingue da aparição da vida orgânica no pensamento de Hegel. Com essa apresentação, desejamos mostrar, sobretudo, que, para Hegel, a dimensão vital dos organismos vivos já configura uma forma mediata e sucessiva à mecânica e à física. Por esta razão, não pode haver, em Hegel, uma caracterização imediata da natureza na totalidade do sistema. A natureza só pode ser caracterizada como uma imediatez nos Princípios da filosofia do direito, com a importante ressalva de que essa imediaticidade é relativa ao Espírito e se apresenta muito mais como uma estratégia de discussão dos objetivos centrais desta obra do que a tentativa de imputar à natureza uma oposição em relação à vida espiritual. Concluímos, portanto, que Marx está mais próximo da restrição metodológica construída por Hegel para discutir a liberdade humana na sua filosofia do direito do que da totalidade construída no conjunto da Enciclopédia.
A melanoma malignum korai felismerését befolyásoló tényezők
Authors: Petrovszki Irén , Csányi Ildikó , Szűcs Mónika , Ócsai Henriette , Houshmand Nazanin , Kemény Lajos , Oláh Judit , Baltás Eszter
Published: December 2016

Abstract:

Introduction and aim: Melanoma is a highly aggressive tumour with often unpredictable outcome. Our aim with this study was to determine factors influencing early detection of melanoma. Method: We analyzed 139 questionnaires completed by patients diagnosed with melanoma. Results: We found that our patients are health-conscious regarding cardiovascular diseases and attend cancer screenings on recall. However, their knowledge about melanoma is insufficient. Most of them perform skin self-examination, but they do not know what to check. Melanoma is detected mostly by the patients themselves, but it takes more than one year to consult a doctor. Our study confirmed that patients’ attitude toward melanoma is an important factor influencing early detection. We found that physical examination and communication about skin cancer prevention is not part of the routine medical care. Conclusions: It is important to improve knowledge about melanoma among the general population and health care providers and to emphasize that early detection can save lives. Orv. Hetil., 2016, 157(51), 2028–2033.
Egészséges gyermek születése karyomapping eljárással történő preimplantációs genetikai diagnózist követően
Authors: Nánássy László , Téglás Gyöngyvér , Csenki Marianna , Vereczkey Attila
Published: December 2016

Abstract:

Preimplantation genetic diagnosis for single gene defects is a well established method in assisted reproductive technologies. Karyomapping is a genome wide parental haplotyping using a high density single nucleotide polymorphism array that allows the diagnosis of any single gene defects. A couple with an affected child with primary congenital glaucoma attended at our clinic. Six oocyte-cumulus-complex was retrieved and all three mature oocytes were inseminated. One zygote showed the signs of normal fertilization and was cultured for five days. Trophectoderm biopsy and karyomapping analysis were carried out. Result showed a heterozygous carrier for primary congenital glaucoma. Embryo was thawed and transferred and a healthy girl was delivered at term. Here we report the first live birth following in vitro fertilization combined with preimplantation genetic diagnosis using karyomapping in Hungary. Karyomapping is able to accurately detect single gene disorders from a limited amount of samples without a significant preclinical workup. Orv. Hetil., 2016, 157(51), 2048–2050.
A vér–agy gát működése, öregedése és diszfunkciója. Átjutás a barrieren
Authors: Erdő Franciska , Hutka Barbara , Dénes László
Published: December 2016

Abstract:

The blood–brain barrier is an interface between the circulation and brain. It is responsible for the homeostasis of central nervous system, protection and feeding of the brain and for providing the conditions for fine regulation of neurons. The coordinated function of different cell types and the regulated expression of molecular systems make possible the functionality of blood–brain barrier. However, this complex system can be broken due to different insults with a consequence of appearance of elevated levels of unwanted exogenous and endogenous molecules in the brain involved in the pathomechanisms of several disorders. The most important risk factor for the damage of blood–brain barrier is the aging itself, which causes disruption of the barrier through DNA mutation, oxidative stress and release of inflammatory mediators. Although the physiological aging is accompanied by morphological changes, the dysfunction of membrane transporters could also lead to neurodegenerative disorders. Structure, function and breakdown of the blood–brain barrier and the possibilities to cross it, are presented. Orv. Hetil., 2016, 157(51), 2019–2027.
A cross sectional study of nutritional status among a group of school children in relation with gingivitis and dental caries severity
Authors: Achmad Harun , Adam Andi M. , Satria Anni
Published: December 2016

To determine nutritional status among a school children of Barru Regency, South Sulawesi, Indonesia, in relation with gingivitis and dental caries severity. Cross-sectional study. A total of 127 school children in the age range of 9-12 years from Barru Regency were included in this study as a sample of simple random sampling. Nutritional status of children (BMI index), degree of gingival inflammation (using chi-square test statistic), and missing teeth (DMF-T index) were recorded. Additional information was collected using a questionnaire survey regarding knowledge about dental health, dietary habits, and oral health behaviors. The data were processed using the program Statistical Package for the Social Sciences (SPSS). A group of who severe underweight (102 children), had higher odds for mild gingivitis (GI 79.4%) than others group of who has an ideal weight (16 children), had mild gingivitis (GI 62.5%). Children, who severe underweight, had higher odds for moderate caries (38.2%) than others group of who has an ideal weight, had moderate caries (18.8%). Based on chi-square test, there are correlation of nutritional status and dental caries severity (p=0.000<p=0.05). There is a relationship of nutritional status with gingivitis and dental caries severity among a school children.
Detecting osteoporosis in elderly women with panoramic radiography technique
Authors: Yunus Barunawaty , Amalia Rezky
Published: December 2016

Osteoporosis is a systemic disease which characterized by a reduction in bone mass with deterioration microarchitecture of bone and degradation of bone tissue which can raise loss of bone. Osteoporosis is a problem related to the aging process. Osteoporosis process actually begin at the age 40-50 years. At this age, men and women will experience shrinkage process of bone mass. in women, this process faster after menopause and is more common in women than men. The technique can be used to detect osteoporosis by performing panoramic radiographic examination techniques. Panoramic radiography is a technique for generating photo of facial structures, including the maxillary bone, mandibular and other support structures. To detect the presence of osteoporosis in elderly women using Panoramic Radiography Techniques. The subjects of this study is image results of a panoramic radiography with vulnerable women aged 50-70> obtained from the Hospital Radiology section of Unhas, Mental Index measurement is then performed on image results of the panoramic radiographs. Overall regardless of age , the prevalence of osteoporosis reached 10 % per 100 population . ( P > 0.05). In detecting osteoporosis in elderly women, panoramic radiography can be applied. The index used is Mental Index, an index of panoramic radiography has been developed to detect osteoporosis.
Antioxidant effectivity to decrease coronal microleakage of composite resin restoration after intra-coronal bleaching
Authors: Yusri Yusri , Trilaksana Aries C. , Rovani Chiristine A.
Published: December 2016

This study aimed to compare the ability of the three antioxidant ingredients and a minimal application to decrease microleakage of composite resin restoration after intracoronal bleaching. Fifty maxillary first incisor that met the inclusion criteria were prepared endodontic treatment. They are divided into 10 groups: control group (no antioxidant), sodium ascorbate 10%, catalase 10% and sodium ascorbate 10% with Tween 80 0.2% and an application period of 1 hour, 24 hours and 48 hours. Applied hydrogen peroxide 35% for 5 days. Samples were restored with composite resin and coated with nail polish, placed China ink for 24 hours. Coronal microleakage was assessed using a stereomicroscope, which showed presented a significant different (ρ<0.05) in 48 hours. It was concluded that sodium ascorbate 10% with Tween 80 0.2% had a significant effect in decreasing coronal microleakage in 48 hours.