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Sample records for cesitlerinin elde edilmesi

  1. Collection and protection of digital evidences in audit processesDenetim süreçlerinde dijital delillerin elde edilmesi ve korunması

    Directory of Open Access Journals (Sweden)

    İlker Koç

    2015-11-01

    Full Text Available Wide usage of information technologies in banking, finance, health and other commercial sectors requires performing of audit of these sectors through information systems. Collecting and protecting electronic evidence is critically important for both judicial process and results of audit activities. Gathering electronic evidences from an information system is a subject for computer forensics and requires special expertise and equipment. Conversely, in Turkey, most of the  institutions responsible for  supervision of financial and other relevant sectors have not enough knowledge and experience about forensic audit. Due to the absence of technical knowledge and tools, there would be deficiencies in collecting electronic evidence in accurate manner. In order to prevent these deficiencies, some alternative solutions are offered in this study. These solutions are adapting the computer forensic techniques to audit processes, providing appropriate training to auditors, establishing a legal environment, sharing of information system audit resource and outsourcing of forensic audit activities.   Özet Bankacılık, finans, sağlık ve diğer ticari sektörlerde bilgi teknolojilerinin kullanımının artması, denetim faaliyetlerinin de bilgi sistemleri üzerinden gerçekleştirilmesi gereksinimini doğurmaktadır. Elektronik ortamlardan dijital delil elde edilmesi ve korunması hem denetim faaliyetinin sonuçları hem de adli süreç açısından önem taşımaktadır. Dijital delillerin elde edilmesi ve korunması adli bilişim faaliyeti kapsamına girmektedir. Adli bilişim faaliyeti uzmanlık ve özel donanımların kullanımını gerektirmektedir. Ancak, Türkiye’de dış denetimle görevli kurumların faaliyetlerinde, adli bilişim yöntemlerine ilişkin yeterli teknik bilgi ve donanım bulunmamaktadır. Bu durum nedeniyle kamu denetim faaliyetlerinde dijital ortamlardan delil elde edilmesi ve korunmasında çeşitli eksiklikler söz konusudur

  2. Cosmological magnetic fields

    Indian Academy of Sciences (India)

    Roy Maartens

    2000-10-01

    Magnetic fields are observed not only in stars, but in galaxies, clusters, and even high redshift Lyman- systems. In principle, these fields could play an important role in structure formation and also affect the anisotropies in the cosmic microwave background radiation (CMB). The study of cosmological magnetic fields aims not only to quantify these effects on large-scale structure and the CMB, but also to answer one of the outstanding puzzles of modern cosmology: when and how do magnetic fields originate? They are either primordial, i.e. created before the onset of structure formation, or they are generated during the process of structure formation itself.

  3. Kırmızı Üzüm Cibresinden Boyar Bileşiklerin Elde Edilmesi

    OpenAIRE

    Peker, İbrahim

    1993-01-01

    In this study, production of red color pigment from the red grape pomace which is a waste of wine factories and various experiments were made on analytical properties of concentrated red grape color pigments. The amount of pigment in red grape pomace was determined and the yield calculated. According to the results the pigment obtained from red grape pomace can be used in food industry and is a natural pigment having no carcinogen effect. It is possible to produce 10.000 tons Per year natur...

  4. Concept of multipole magnetic field rotation in ECRIS

    Indian Academy of Sciences (India)

    M H Rashid; R K Bhandari

    2002-11-01

    The conventional type of magnetic well is formed by superposition of two types of magnetic field, axial bumpy field and radial multipole field. It is used to contain plasma that consists of neutrals, ions and electrons. These particles are in constant motion in the well and energetic electrons create plasma by violent collisions with neutrals and ions. The confined electrons are constantly heated by ECR technique in the presence of magnetic field. In this paper it has been shown theoretically that how the electron motion is influenced in terms of heating, containment and azimuthal uniformity of plasma, by the axial rotation of the multipole magnetic field [1,2]. Afterwards, the feasibility of achieving a rotating magnetic multipole field is discussed to some extent. And it is seen that it is not beyond the capability of the scientific community in the present scenario of the advanced technology. Presently, it can be achieved for lesser field and slightly larger size of the multipole electromagnet and can be used for improvement of the ECR ion source (ECRIS).

  5. On the invariance properties of the Klein–Gordon equation with external electromagnetic field

    Indian Academy of Sciences (India)

    N D Sen Gupta

    2003-09-01

    Here we attempt to find the nature of the external electromagnetic field such that the KG equation with external electromagnetic field is invariant. Lie’s extended group method is applied to obtain the class of external electromagnetic field which admits the invariance of the KG equation. Though, the field potential only explicitly appears in the equation, the constraints for the invariance are only on the electromagnetic field.

  6. Magnetic field modulation spectroscopy of rubidium atoms

    Indian Academy of Sciences (India)

    S Pradhan; R Behera; A K Das

    2012-04-01

    The magnetically modulated saturation absorption profile is studied for a wide range of external DC magnetic field. The salient features of Doppler-free signal generated by laser frequency modulation and atomic energy level modulation are compared. The DC offset of the signal profile is found to be unstable as the external DC magnetic field is changed. The technical difficulty of tuning laser frequency under locked condition over a large frequency span is discussed along with possible solutions.

  7. Strong eld ionization of naphthalene: angular shifts and molecular potential

    DEFF Research Database (Denmark)

    Dimitrovski, Darko; Maurer, Jochen; Christensen, Lauge;

    We analyze the photoelectron momentum distributions from strong eld ionization of xed-in-space naphthalene molecules by circularly polarized laser pulses. By direct comparison between experiment and theory, we show that the angular shifts in the photoelectron momentum distributions are very...

  8. High-order harmonic generation from eld-distorted orbitals

    DEFF Research Database (Denmark)

    Spiewanowski, Maciek; Etches, Adam; Madsen, Lars Bojer

    We investigate the eect on high-order harmonic generation of the distortion of molecular orbitals by the driving laser eld. Calculations for high-order harmonic generation including orbital distortion are performed for N2 (high polarizability). Our results allow us to suggest that field...

  9. Invariance properties of the Dirac equation with external electro-magnetic field

    Indian Academy of Sciences (India)

    N D Sen Gupta

    2003-01-01

    In this paper, we attempt to obtain the nature of the external field such that the Dirac equation with external electro-magnetic field is invariant. The Poincar´e group, which is the maximal symmetry group for field free case, is constrained by the presence of the external field. Introducing infinitesimal transformation of x andψ, we apply Lie’s extended group method to obtain the class of external field which admit of the invariance of the equation. It is important to note that the constraints for the existence of invariance are explicity on the electric and magnetic field, though only potentials explicity appears in the equation.

  10. Radial oscillations of neutron stars in strong magnetic fields

    Indian Academy of Sciences (India)

    V K Gupta; Vinita Tuli; S Singh; J D Anand; Ashok Goyal

    2002-09-01

    The eigen frequencies of radial pulsations of neutron stars are calculated in a strong magnetic field. At low densities we use the magnetic BPS equation of state (EOS) similar to that obtained by Lai and Shapiro while at high densities the EOS obtained from the relativistic nuclear mean field theory is taken and extended to include strong magnetic field. It is found that magnetized neutron stars support higher maximum mass whereas the effect of magnetic field on radial stability for observed neutron star masses is minimal.

  11. On Bianchi-I cosmic strings coupled with Maxwell fields in bimetric relativity

    Indian Academy of Sciences (India)

    V Mahurpawar; S D Deo

    2003-10-01

    Axially symmetric Bianchi-I model is studied with source cosmic cloud strings coupled with electromagnetic field in Rosen’s bimetric theory of relativity and observed that there is no contribution from cosmic strings and Maxwell fields in this theory.

  12. Topological field patterns in the Yang–Mills theory

    Indian Academy of Sciences (India)

    E Harikumar; Indrajit Mitra; H S Sharatchandra

    2003-11-01

    We present a formalism where the topological configurations of pure Yang–Mills theory are characterised using gauge fields alone. Here, we obtain an expression for the charges of these topological (3) gauge field configurations in terms of the Abelian vector potentials. In this formalism we analyse the ’t Hooft–Polyakov monopole solution.

  13. Generation and measurement of multi megagauss fields in inertial magnets

    Indian Academy of Sciences (India)

    N Nalini; T C Kaushik; S C Gupta

    2010-10-01

    We present here the development of a facility to generate high (multi megagauss) magnetic field of 4 to 5 s rise time, using inertial magnets. The facility includes a low inductance, high current capacitor bank (280 kJ/40 kV) and an inertial magnet, which is a copper disk machined to have a keyhole in it. As the high current from the capacitor bank is discharged through the copper disk, a high magnetic field is produced along its axis, before it is destroyed by the combined effect of the dynamic loading and skin effect. A maximum peak magnetic field of 257 T is realized, when the magnet with 3·6 mm inner diameter, 35 mm outer diameter and 5 mm length, is powered by the capacitor bank charged to 28 kV (134 kJ). The transient magnetic field is measured using a B dot probe with an error of ±25 T. The probe in most of high field shots (> 200 T) got destroyed before recording the peak field and the trailing edge of the magnetic field. Experimental evidence of enhancement of the probe survival for longer time in copper disks using spatial non-uniform conductivity with 1 mm thick SS brazed to the inner wall of the inertial magnet is also reported.

  14. Combined full field stress and strain measurement methods for granular materials

    Directory of Open Access Journals (Sweden)

    Broere W.

    2010-06-01

    Full Text Available The current paper re-introduces the photoelastic measurement method in experimental geomechanics. A full-field phase stepping polariscope suitable for geomechanical model tests has been developed. Additional constraints on the measurement and mechanical setup arising from geomechanical test conditions are outlined as well as the opportunity to measure the displacement fields in the sample with digital image correlation. The capability of the current setup in retrieving the stress and strain field in a granular material is demonstrated.

  15. Dynamics of cascade three-level system interacting with the classical and quantized field

    Indian Academy of Sciences (India)

    Mihir Ranjan Nath; Surajit Sen; Gautam Gangopadhyay

    2003-12-01

    We study the exact solutions of the cascade three-level atom interacting with a single mode classical and quantized field with different initial conditions ofthe atom. For the semiclassical model, it is found that if the atom is initially in the middle level, the time-dependent populations of the upper and lower levels are always equal. This dynamical symmetry exhibited by the classical field is spoiled on quantization of the field mode. To reveal this non-classical effect, a Euler matrix formalism is developed to solve the dressed states of the cascade Jaynes–Cummings model (JCM). Possible modification of such an effect on the collapse and revival phenomenon is also discussed by taking the quantized field in a coherent state.

  16. Tokamak Plasmas : Internal magnetic field measurement in tokamak plasmas using a Zeeman polarimeter

    Indian Academy of Sciences (India)

    M Jagadeeshwari; J Govindarajan

    2000-11-01

    In a tokamak plasma, the poloidal magnetic field profile closely depends on the current density profile. We can deduce the internal magnetic field from the analysis of circular polarization of the spectral lines emitted by the plasma. The theory of the measurement and a detailed design of the Zeeman polarimeter constructed to measure the poloidal field profile in the ADITYA tokamak are presented. The Fabry-Perot which we have employed in our design, with photodiode arrays followed by lock-in detection of the polarization signal, allows the measurement of the fractional circular polarization. In this system He-II line with wavelength 4686 Å is adopted as the monitoring spectral line. The line emission used in the present measurement is not well localized in the plasma, necessiating the use of a spatial inversion procedure to obtain the local values of the field.

  17. The Diffuse Approximation: a derivative tool dedicated to full-field measurements

    Directory of Open Access Journals (Sweden)

    Villon P.

    2010-06-01

    Full Text Available This study proposes a filtering tool based on the diffuse approximation, in order to reconstruct strain fields from full-field displacement measurements. The question of the filtering of the noise is adressed and an alternative approach based on space-time filtering is proposed. The methods are then applied to the detection of early damage detection on a tensile test on an interlock composite.

  18. The influence of a transverse magnetic field on a subnormal glow discharge in air

    Indian Academy of Sciences (India)

    D C Jana; S S Pradhan

    2001-01-01

    In subnormal glow discharge under d.c. excitation at different pressure in a varying transverse magnetic field (0 to 30 G) some measurements have been carried out for various initial average tube currents. The voltage across the discharge increases and average tube current and residual current decreases in the magnetic field. With the help of Beckman’s expression [4] for the axial field and the electron density distribution in a transverse magnetic field the observed variation of current and voltage can be satisfactorily explained. The variation of axial electric field with transverse magnetic field can be represented to a fair degree of accuracy by the derived equation. The behaviour of residual current with magnetic field has been observed in these oscillations.

  19. On a new formulation of microphenomena: Basic principles, stationary fields and beyond

    Indian Academy of Sciences (India)

    Afshin Shafiee

    2011-06-01

    In a series of essays, beginning with this article, we are going to develop a new formulation of microphenomena based on the principles of reality and causality. The new theory provides us with a new depiction of microphenomena assuming a unified concept of information, matter and energy. So, we suppose that in a definite microphysical context (including other interacting particles), each particle is enfolded by a probability field whose existence is contingent on the existence of the particle, but it can locally affect the physical status of the particle in a context-dependent manner. The dynamics of the whole particle-field system obeys deterministic equations in a manner such that when the particle is subjected to a conservative force, the field also experiences a conservative complex force, the form of which is determined by the dynamics of the particle. So, the field is endowed with a given amount of energy, but its value is contingent on the physical conditions the particle is subjected to. Based on the energy balance of the particle and its associated field, we argue why the field has a probabilistic objective nature. The basic elements of this new formulation, its application for some stationary states and its nonlinear generalization for conservative systems are discussed here.

  20. Complex seismic wavefi eld interpolation based on the Bregman iteration method in the sparse transform domain

    Institute of Scientific and Technical Information of China (English)

    Gou Fu-Yan; Liu Cai; Liu Yang; Feng Xuan; Cui Fang-Zi

    2014-01-01

    In seismic prospecting,fi eld conditions and other factors hamper the recording of the complete seismic wavefi eld; thus, data interpolation is critical in seismic data processing. Especially, in complex conditions, prestack missing data affect the subsequent high-precision data processing workfl ow. Compressive sensing is an effective strategy for seismic data interpolation by optimally representing the complex seismic wavefi eld and using fast and accurate iterative algorithms. The seislet transform is a sparse multiscale transform well suited for representing the seismic wavefield, as it can effectively compress seismic events. Furthermore, the Bregman iterative algorithm is an efficient algorithm for sparse representation in compressive sensing. Seismic data interpolation methods can be developed by combining seismic dynamic prediction, image transform, and compressive sensing. In this study, we link seismic data interpolation and constrained optimization. We selected the OC-seislet sparse transform to represent complex wavefields and used the Bregman iteration method to solve the hybrid norm inverse problem under the compressed sensing framework. In addition, we used an H-curve method to choose the threshold parameter in the Bregman iteration method. Thus, we achieved fast and accurate reconstruction of the seismic wavefi eld. Model andfi eld data tests demonstrate that the Bregman iteration method based on the H-curve norm in the sparse transform domain can effectively reconstruct missing complex wavefi eld data.

  1. The origin of the strongest magnetic fields in dwarfs

    Indian Academy of Sciences (India)

    Christopher A Tout

    2011-07-01

    White dwarfs have frozen in magnetic fields ranging from below the measurable limit of about 3 × 103 to 109 G. White dwarfs with surface magnetic fields in excess of 1 MG are found as isolated single stars and relatively more often in magnetic cataclysmic variables. Some 1253 white dwarfs with a detached low-mass main-sequence companion have been identified in the Sloan Digital Sky Survey (SDSS) but none of these shows sufficient evidence for Zeeman splitting of hydrogen lines for a magnetic field in excess of 1 MG. If such high magnetic fields in white dwarfs result from the isolated evolution of a single star then there should be the same fraction of high field white dwarfs among this SDSS binary sample as among single stars. Thus, we deduce that the origin of such high magnetic fields must be intimately tied to the formation of cataclysmic variables (CVs). The formation of a CV must involve orbital shrinkage from giant star to main-sequence star dimensions. It is believed that this shrinkage occurs as the low-mass companion and the white dwarf spiral together inside a common envelope. CVs emerge as very close but detached binary stars that are then brought together by magnetic braking or gravitational radiation. We propose that the smaller the orbital separation at the end of the common envelope phase, the stronger the magnetic field. The magnetic cataclysmic variables (MCVs) originate from those common envelope systems that almost merge. Those common envelope systems that do merge are the progenitors of the single high field white dwarfs. Thus all highly magnetic white dwarfs, be they single stars or the components of MCVs, have a binary origin. This accounts for the relative dearth of single white dwarfs with fields of 104 – 106 G. Such intermediate-field white dwarfs are found preferentially in cataclysmic variables. The bias towards higher masses for highly magnetic white dwarfs is expected if a fraction of these form when two degenerate cores

  2. Evanescent magnetic field effects on entropy generation at the onset of natural convection

    Indian Academy of Sciences (India)

    Mourad Magherbi; Atef El Jery; Nejib Hidouri; Ammar Ben Brahim

    2010-04-01

    This paper numerically investigates the effect of an externally evanescent magnetic field on total entropy generation in a fluid enclosed in a square cavity by using a control volume finite element method to solve the conservation equations at Prandtl number of 0·71. The values of relaxation time of the magnetic field are chosen, so that the Lorentz force acts only in the transient state of entropy generation in natural convection. The total entropy generation was calculated for, fixed value of irreversibility distribution ratio, different relaxation time varying from 0 to 1/5 and Grashof number varying from 104 to 105. The effects of the Hartman number and the magnetic field inclination angle on the evolution of total entropy generation throughout the transient regime were investigated. Results show that the application of evanescent magnetic field not only suppresses the fluctuation of the total entropy generation in the transient state, but also reduces the gap for magnetic field relaxation time less than 1/10.

  3. Magnetic-field-induced valence transition in rare-earth systems

    Indian Academy of Sciences (India)

    G Gangadhar Reddy; A Ramakanth; S K Ghatak

    2002-05-01

    The magnetic-field-induced valence transition in rare-earth systems has been investigated using the periodic Anderson model supplemented by the Falicov–Kimball term. This model has been solved by first decoupling the Falicov–Kimball term as proposed by Khomskii and Koharjan and then taking the limit of infinite intra-site Coulomb repulsion. The valence transition both in the absence and in the presence of magnetic field as a function of temperature is studied. It has been found that the system makes transition from non-magnetic to magnetic state when the magnetic field increases beyond a critical value c. The phase boundary defined in terms of reduced field c()/c(0) and reduced temperature /v (v being the valence transition temperature in the absence of field) is almost independent of the position of the localized level. The results are in qualitative agreement with experimental observations in Yb- and Eu-compounds.

  4. Time-resolved Measurement of Quadrupole Wake?elds in Corrugated Structures

    CERN Document Server

    Lu, Chao; Jiang, Tao; Liu, Shengguang; Shi, Libin; Wang, Rui; Zhao, Lingrong; Zhu, Pengfei; Zhang, Zhen; Xiang, Dao

    2016-01-01

    Corrugated structures have recently been widely used for manipulating electron beam longitudinal phase space and for producing THz radiation. Here we report on time-resolved measurements of the quadrupole wake?elds in planar corrugated structures. It is shown that while the time- dependent quadrupole wake?eld produced by a planar corrugated structure causes signi?cant growth in beam transverse emittance, it can be e?ectively canceled with a second corrugated structure with orthogonal orientation. The strengths of the time-dependent quadrupole wake?elds for various corrugated structure gaps are also measured and found to be in good agreement with theories. Our work should forward the applications of corrugated structures in many accelerator based scienti?c facilities.

  5. Laser Plasmas : Density oscillations in laser produced plasma decelerated by external magnetic field

    Indian Academy of Sciences (India)

    V N Rai; M Shukla; H C Pant

    2000-11-01

    This paper presents the dynamics as well as the stability of laser produced plasma expanding across the magnetic field. Observation of some high frequency fluctuations superimposed on ion saturation current along with structuring in the pin hole images of x-ray emitting plasma plume indicate the presence of instability in the plasma. Two type of slope in the variation of x-ray emission with laser intensity in the absence and presence of magnetic field shows appearance of different threshold intensity of laser corresponding to each magnetic field at which this instability or density fluctuation sets on. This instability has been identified as a large Larmor radius instability instead of classical Rayleigh-Taylor (R-T) instability.

  6. Semileptonic ( → ) decay in a field theoretic quark model

    Indian Academy of Sciences (India)

    R K Das; A R Panda; R K Sahoo; M R Swain

    2002-03-01

    The semileptonic decay width of heavy baryons such as ( → ) has been estimated in the framework of a nonrelativistic field theoretic quark model where four component quark field operators along with a harmonic oscillator wave function are used to describe translationally invariant hadronic states. The present estimation does not make an explicit use of heavy quark symmetry and has a reasonable agreement with the experimentally measured decay width, polarisation ratio and form factors with the harmonic oscillator radii and quark momentum distribution inside the hadron as free parameters.

  7. Cosmological model of interacting phantom and Yang–Mills fields

    Indian Academy of Sciences (India)

    V K Shchigolev

    2012-05-01

    In this paper, we consider a model of interacting phantom and Yang–Mills (YM) fields by assuming dilaton-type coupling. Using the specific solution for YM equation previously found by the author, we obtain simple exact solutions for the accelerated expansion of the Friedmann–Robertson–Walker (FRW) cosmological model. Besides, we derive induced potentials of phantom field corresponding to some given regimes of expansion. The effective equations of state (EoS) have been reconstructed for all types of models considered here.

  8. Siyanobakteriden elde edilen fikosiyaninin saflaştırılması ve karakterizasyonu

    OpenAIRE

    Akoğlu, Aylin

    2012-01-01

    Bu çalışmada yüksek fikosiyanin verimine sahip siyanobakteri suşunun seçimi, suşun fikosiyanin veriminin artırılması, ekstrakte edilen fikosiyaninin stabilitesinin belirlenmesi, saflaştırılması ve karakterize edilmesi amaçlanmıştır.

     Çalışmanın ilk aşamasında çeşitli siyanobakteri suşları fikosiyanin verimleri açısından karşılaştırılmış ve Anabaena affinis suşu 110 mg/g fikosiyanin miktarı ile en verimli suş...

  9. Gravitational field of spherical domain wall in higher dimension

    Indian Academy of Sciences (India)

    Farook Rahaman; Mehedi Kalam

    2002-01-01

    An exact solution of Einstein’s equations is found describing the gravitational field of a spherical domain wall with nonvanishing stress component in the direction perpendicular to the plane of the wall. Also we have studied the motion of test particle around the domain wall.

  10. Types of two-dimensional = 4 superconformal field theories

    Indian Academy of Sciences (India)

    Abbas Ali

    2003-12-01

    Various types of = 4 superconformal symmetries in two dimensions are considered. It is proposed that apart from the well-known cases of (2) and (2)× (2)× (1), their Kac–Moody symmetry can also be (2)× ((1))4. Operator product expansions for the last case are derived. A complete free field realization for the same is obtained.

  11. Metal–insulator crossover in high c cuprates: A gauge field approach

    Indian Academy of Sciences (India)

    P A Marchetti; Z B Su; L Yu

    2002-05-01

    A metal–insulator crossover appears in the experimental data for in-plane resistivity of underdoped cuprates and a range of superconducting cuprates in the presence of a strong magnetic field suppressing superconductivity. We propose an explanation for this phenomenon based on a gauge field theory approach to the t-J model. In this approach, based on a formal spin-charge separation, the low energy effective action describes gapful spinons (with a theoretically derived doping dependence of the gap $m^{2}_{s}∼|{\\rm ln }|$) and holons with finite Fermi surface (F ∼ ) interacting via a gauge field whose basic effect on the spinons is to bind them into overdamped spin waves, shifting their gap by a damping term linear in , which causes the metal–insulator crossover. The presence of a magnetic field perpendicular to the plane acts by increasing the damping, in turn producing a big positive transverse in-plane magnetoresistance at low , as experimentally observed.

  12. Self-field effects on small-signal gain in two-stage free-electron lasers

    Indian Academy of Sciences (India)

    S Jafari; H Mehdian; A Hasanbeigi

    2011-03-01

    Self-field effects, induced by charge and current densities of the electron beam, on gain in two-stage free-electron laser with nonuniform guide magnetic field is presented. The gain equation for small-signal has been derived analytically. The results of numerical calculations show a gain decrement for group I orbits and a gain enhancement for group II orbits, due to the self-field effects. The wiggler-induced self-magnetic field has a diamagnetic effect for group I orbits, whereas for group II, it has a paramagnetic effect. It is also found that using a nonuniform guide field, rather than a uniform one, causes the gain to increase.

  13. Cryptococcus Neoformans Kokenlerinin In Vitro Fenol Oksidaz Etkinliginin Belirlenmesi ve C. Neoformansı ın Candida Albicans Kolonilerinden Ay1rt Edilmesi i~in Pal Agar ve Niger Seed Agar Besiyerlerinin Karşılaştırılması

    OpenAIRE

    KANTARCIOĞLU, A. SERDA; YÜCEL, Ayhan; Vidottto, Valerio

    2008-01-01

    Cryptococcus Neoformans Kokenlerinin In Vitro Fenol Oksidaz Etkinliginin Belirlenmesi ve C. Neoformans11n Candida Albicans Kolonilerinden Ay1rt Edilmesi i~in Pal Agar ve Niger Seed Agar Besiyerlerinin Karfllaft1r1lmas1

  14. Long-term monitoring of nitrate transport to drainage from three agricultural clayey till fields

    DEFF Research Database (Denmark)

    Ernstsen, Vibeke; Olsen, Preben; Rosenbom, Annette E.

    2015-01-01

    The application of nitrogen (N) fertilisers to crops grown on tile-drained fields is required to sustain most mod-ern crop production, but it poses a risk to the aquatic envi-ronment since tile drains facilitate rapid transport pathways with no significant reduction in nitrate. To maintain the water...... concentration of nitrate-N and long-term high intensity drainage at air tem-peratures above 5 ◦C. For each type, on-field water manage-ment actions, such as the selection of crop types and in-troduction of catch crops, appeared relevant, whereas off-field actions only seemed relevant for the latter two field types...... quality of the aquatic environment and the provision of food from highly efficient agriculture in line with the EU’s Wa-ter Framework Directive and Nitrates Directive, field-scale knowledge is essential for introducing water management ac-tions on-field or off-field and producing an optimal differen-tiated N...

  15. Simulations of the electromagnetic calorimeter in the presence of magnetic eld for the FCChh

    CERN Document Server

    Matas, Marek

    2016-01-01

    This work was focused on studying the properties of the electromagnetic calorimeter for the Future Circular Collider (FCC) [1]. FCC is an accelerator that will possibly be built in the 2040s-2050s. Its circumference would be 100 km with the center of mass energy ps=100TeV in proton-proton collisions. Detectors used to record FCC collisions will consist of the tracker, cryostat, electromagnetic calorimeter (EMCal), hadronic calorimeter (HCal) and muon chambers. In this work, we shall study the EMCal and its properties. One of the properties of the environment that this particular detector will have to face is the presence of a strong magnetic eld in the volume of the calorimeter. Studies carried out in this work are preliminary studies focused on addressing the eects that the magnetic eld will have on the electromagnetic shower evolution.

  16. Phenomenology of a realistic accelerating universe using tracker fields

    Indian Academy of Sciences (India)

    Vinod B Johri

    2002-09-01

    We present a realistic scenario of tracking of scalar fields with varying equation of state. The astrophysical constraints on the evolution of scalar fields in the physical universe are discussed. The nucleosynthesis and the galaxy formation constraints have been used to put limits on and estimate during cosmic evolution. Interpolation techniques have been applied to estimate ≃ 0.772 at the present epoch. The epoch of transition from matter to quintessence dominated era and consequent onset of acceleration in cosmic expansion is calculated and taking the lower limit $^{0}_{n} = 0.2$ as estimated from data, it is shown that the supernova observations beyond redshift = 1 would reveal deceleration in cosmic expansion.

  17. Magnetization curves for non-elliptic cylindrical samples in a transverse field

    Indian Academy of Sciences (India)

    Debjani Karmakar; K V Bhagwat

    2001-01-01

    Using recent results for the surface current density on cylindrical surfaces of arbitrary cross-section producing uniform interior magnetic field and an assumed set of flux-fronts, solutions of Bean’s critical state model for cylindrical samples with non-elliptic cross-section are presented. Magnetization hysteresis loops for two cross-sections with different aspect ratios are obtained. A comparison with some exact results shows the limitations of this approach.

  18. Computation of flow and thermal fields in a model CVD reactor

    Indian Academy of Sciences (India)

    Vishwadeep Saxena; K Muralidhar; V Eswaran

    2002-12-01

    Mixing of coaxial jets within a tube in the presence of blockage has been numerically studied. This configuration is encountered during the modelling of flow and heat transfer in CVD (chemical vapour deposition) reactors. For the conditions prevailing in the reactor, the Reynolds numbers are low and flow can be taken to be laminar and incompressible. The unsteady forms of the governing equations have been solved by a finite volume method that can treat complex three-dimensional geometries. The algorithm is a two-step procedure, wherein the first step predicts the velocity field using an assumed pressure field. The second step corrects the fields using a Poisson equation to obtain the pressure corrections. Advection terms have been treated by a hybrid upwind-central difference technique. The computer code developed is fully three-dimensional, though most computations of the present study have been carried out for two-dimensional geometry. Results have been obtained in the form of velocity vector plots, wall shear stress variation on the block and the tube wall, isotherms and temperature profiles. The flow and heat transfer characteristics of jet mixing have been explored in terms of the Reynolds number, the jet velocity ratio, the axial position of the block, and the blockage ratio. The results obtained show that a proper combination of the process parameters can lead to an improved performance of the CVD reactor.

  19. Low-field vortex dynamics in various high-c thin films

    Indian Academy of Sciences (India)

    Johan J Åkerman; K V Rao

    2002-05-01

    We present a novel ac susceptibility technique for the study of vortex creep in superconducting thin films. With this technique we study the dynamics of dilute vortices in -axis oriented Y-123, Hg-1212, and Tl-1212 thin films, as well as -axis oriented Hg-1212 thin films. Results on the Hg-1212 and Tl-1212 thin films indicate that dislocation-mediated plastic flux creep of single vortices dominates at low temperatures and fields. As the temperature (or the field) is increased, the increasing vortex–vortex interactions promote a collective behavior, which can be characterized by elastic creep with a non-zero exponent. Also, in some of these samples effects of thermally assisted quantum creep are visible up to 45 K in some of these samples. In Y-123 thin films, creep is found to be collective down to the lowest temperatures and fields investigated, while the quantum creep persists only up to 10–11 K.

  20. Mechanical properties of low density polymeric foams obtained from full-field measurements

    Directory of Open Access Journals (Sweden)

    Pierron F.

    2010-06-01

    Full Text Available This exploratory paper presents some preliminary results on the use of fullfield deformation measurements on low density polymeric foams to identify the evolution of Poisson’s ratio with compressive strain. Two types of foams were tested: a standard low density polyurethane foam and an auxetic foam manufactured from a similar precursor. 2D digital image correlation was used to measure the strain field at the specimens surfaces. Then, Poisson’s ratios were identified using a dedicated inverse method called the Virtual Fields Method (VFM and the results compared with the standard approaches. The results illustrate the advantages of the VFM compared to the standard procedure. It was also found that for the standard foam, very strong localization effects resulted in biased Poisson’s ratio evaluation. It was shown that this could be corrected by taking into account these localization effects thanks to the full-field information.

  1. RÜZGAR TÜRBİNLERİ İLE ENERJİ ELDE EDİLMESİ

    Directory of Open Access Journals (Sweden)

    H. RIZA GÜVEN

    2005-01-01

    Full Text Available Ulkemizde ve dünyada hızla artan enerji ihtiyacı karşısında mevcut tükenir enerji kaynaklarındaki azalma ve bazı kaynaklann yol açtığı çevresel sorunlar yeni ve yenilenebilir enerji kaynaklarını gündeme getirmiştir. Dünyada konvensiyonel kaynaklardan elektrik üretiminin yarattığı çevre sorunları nedeniyle artan hassasiyet, bu sorunların en aza indirilınesi için uygulanan teknolojiterin getirdiği maliyetler ve kullanılan kaynakların yenilenemez oluşu, çevre dostu sıfır yakıt maliyetli olan yeni ve yenilenebilir enerji kaynaklanndan elektrik üretimini arttırmıştır. Bu çalışmada rüzgar türbinleri teknolojileri üzerinde durulmuş, bir rüzgar santrali kurarken dikkat edilmesi ve incelenmesi gereken hususlar araştınlmıştır.

  2. On the effect of a longitudinal magnetic field on oscillatory characteristics of a subnormal region in discharge in argon

    Indian Academy of Sciences (India)

    D C Jana; S S Pradhan

    2003-06-01

    Oscillating nature of current pulses under d.c. excitation in subnormal region with longitudinal magnetic field at pressure range 0.20 torr to 0.85 torr have been studied. The frequency, bandwidth, peak–peak voltage, cut-off current and rise time of the current pulses have been observed with pressure, average tube current and magnetic field. A study of these oscillograms in magnetic field, average tube current and pressure are presented. The probable mechanism for the generation of oscillation based on space-charge field modification with magnetic field is discussed.

  3. Mössbauer studies of hyperfine fields in disordered Fe2CrAl

    Indian Academy of Sciences (India)

    N Lakshmi; K Venugopalan; J Varma

    2002-09-01

    Heusler-like alloy Fe2CrAl was prepared and studied. Structure determination was done by X-ray. The structure was found to conform to the B2 type. Magnetic hyperfine fields in this sample were studied by the Mössbauer effect. The Mössbauer spectra were recorded over a range of temperature from 40 to 296 K. The Mössbauer spectra showed the co-existence of a paramagnetic part with a magnetic hyperfine portion at all recorded temperatures. Even with the distribution in the magnetic hyperfine field, the average hyperfine field follows the $(T=T_{c})^{3/2}$ law. The paramagnetic part of the hyperfine field is explained in terms of the clustering of Cr atoms.

  4. Numerical investigation of space charge electric field for a sheet electron beam between two conducting planes

    Indian Academy of Sciences (India)

    Arti Gokhale; Preeti Vyas; J Panikar; Y Choyal; K P Maheshwari

    2002-01-01

    Analytical and numerical study of the stability of sheet electron beam in periodically cusped magnetic field (PCM) is made. The beam has been considered as having diffused density profile. The conditions for beam focusing are discussed.

  5. Time-reversal symmetry breaking by ac field: Effect of commensurability in the frequency domain

    Indian Academy of Sciences (India)

    V E Kravtsov

    2002-02-01

    It is shown that the variance of the linear dc conductance fluctuations in an open quantum dot under high-frequency ac pumping depends significantly on the spectral content of the ac field. For a sufficiently strong ac field the dc conductance fluctuations are much stronger for the periodic pumping than in the case of the noise ac field of the same intensity. The reduction factor in a static magnetic field takes the universal value of 2 only for the white-noise pumping. In general may deviate from 2 thus signalling on the time-reversal breaking by the ac field. For the bi-harmonic ac field of the form () = 0 [cos(1 ) + cos(2 )] we predict the enchancement of effects of -symmetry breaking at commensurate frequencies 2/1 = /. In the high-temperature limit there is also the parity effect: the enchancement is only present if either or is even.

  6. Triploid karpuz tohumlarının çimlenme kapasitesinin tohum uygulamaları ile teşvik edilmesi

    OpenAIRE

    KİREMİT, Merve

    2015-01-01

    Bu araştırma, triploid karpuz tohumlarına (Citrullus lanatus (Thunb.) Matsum. & Nakai) ait Bonny, Pixie ve Estel Deluxe çeşitlerinin çimlenme kapasitelerinin tohum uygulamaları ile teşvik edilmesi amacıyla 2014-2015 yılları arasında Ankara Üniversitesi Bahçe Bitkileri Bölümü Tohum Bilimi Laboratuvarında yürütülmüştür.Araştırmanın 3 aşaması bulunmaktadır. İlk aşamada tüm çeşitlere, tohum kabuğunu aşındırmak ve/veya tohumda O₂ miktarını artırmak amaçlarıyla çeşitli uygulama kom...

  7. Copulatory pattern and behavior in a semi-captive population of Eld's deer

    Institute of Scientific and Technical Information of China (English)

    Zhigao ZENG; Yan-Ling SONG; Qiong ZHANG

    2011-01-01

    Male copulatory patterns, female multiple copulation and male post-copulatory guarding were studied in Eld's deer Cervus eldi in Datian National Nature Reserve, China. Mating behavior in 18 females and 11 males from a group of 61 semi-captive Eld's deer were observed. The majority (55.8%) of copulations occurred between 15:00-19:00 h. The ejaculatory mount was preceded by an average of 5.1 prior mounts. Successful copulation consisted of a single thrust with ejaculation during one intromission, with no lock. This copulatory pattern is classified as pattern No. 15 (no lock, no intravaginal thrusting, single intromission, and multiple ejaculation) and No. 16 (no lock, no intravaginal thrusting, single intromission, and single ejaculation) under Dewsbury's scheme (1972) and as No. 16 (no lock, no thrusting, single and brief intromission) under Dixson's classification (1998). Copulation frequency was 1.5 0.9 times for males/ females with the same female/male per day. The duration of the final mount, which included ejaculation, was brief (3.4±1.3 s), and ejaculation usually terminated copulation. Eleven females copulated more than once in this study: three of them copulated with several males (multi-male copulations) and the remainder copulated with a single male (repeated copulations). Our results indicate that some female Eld's deer may seek multiple copulations to be a strategy to improve the genetic quality of their offspring or to avoid harassment. Post-copulatory guarding of females by males followed all copulations, with dominant males guarding for significantly longer than subordinate males. Dominant males appear to be more effective at post-copulatory guarding than subordinate males. Subordinate males engaged in a quicker pre-copulatory phase to improve their chances of finishing copulation before being forced to accede to dominant males.

  8. Quasi-static crack tip fields in rate-sensitive FCC single crystals

    Indian Academy of Sciences (India)

    P Biswas; R Narasimhan

    2012-02-01

    In this work, the effects of loading rate, material rate sensitivity and constraint level on quasi-static crack tip fields in a FCC single crystal are studied. Finite element simulations are performed within a mode I, plane strain modified boundary layer framework by prescribing the two term $(K −T)$ elastic crack tip field as remote boundary conditions. The material is assumed to obey a rate-dependent crystal plasticity theory. The orientation of the single crystal is chosen so that the crack surface coincides with the crystallographic (010) plane and the crack front lies along $[10\\bar{1}]$ direction. Solutions corresponding to different stress intensity rates $\\dot{K}$, -stress values and strain rate exponents are obtained. The results show that the stress levels ahead of the crack tip increase with $\\dot{K}$ which is accompanied by gradual shrinking of the plastic zone size. However, the nature of the shear band patterns around the crack tip is not affected by the loading rate. Further, it is found that while positive -stress enhances the opening and hydrostatic stress levels ahead of crack tip, they are considerably reduced with imposition of negative -stress. Also, negative -stress promotes formation of shear bands in the forward sector ahead of the crack tip and suppresses them behind the tip.

  9. Design, fabrication, and characterization of a solenoid system to generate magnetic field for an ECR proton source

    Indian Academy of Sciences (India)

    S K Jain; P A Naik; P R Hannurkar

    2010-08-01

    Solenoid coils with iron jacket (electromagnets) have been designed and developed for generation and confinement of the plasma produced by an electron cyclotron resonance source operating at 2450 MHz frequency. The magnetic field configurations designed using the solenoid coils are off-resonance, mirror, and flat, satisfying electron cyclotron resonance condition along the axis of the plasma chamber. 2D Poisson software was used for designing. Details of design, fabrication, and magnetic field mapping of the solenoid coils are presented in this paper.

  10. Strain field due to self-interstitial impurity in Ni

    Indian Academy of Sciences (India)

    Hitesh Sharma; S Prakash

    2003-01-01

    The embedded-atom method have been applied to study the strain field produced by the self-interstitial impurity at the octahedral site in Ni. The calculation have been carried out consistently on the basis of discrete lattice theory, using Kanzaki method. The atomic force constants are evaluated using Wills and Harrison interatomic potential. The dynamical matrix and external force are evaluated considering the interaction up to first nearest neighbors. The atomic displacements are tabulated up to 20NN’s. These displacements are of oscillatory nature and of decreasing magnitude with NN’s distance. The physical properties such as self-interstitial formation energy and volume change calculated using atomic displacements are in accordance with the earlier studies.

  11. Magnetization curves for general cylindrical samples in a transverse field

    Indian Academy of Sciences (India)

    K V Bhagwat; Debjani Karmakar

    2001-10-01

    Using the recent results for the surface current density on cylindrical surfaces of arbitrary cross-section producing uniform interior magnetic field we propose a method for obtaining solutions of Bean’s critical state model for general cylindrical samples. The method uses the technique of conformal mapping to express the sample surface and the flux-fronts in terms of a set of coefficients that depend on a parameter. The flux-fronts are to be determined by solving a system of nonlinear ordinary differential equations for the coefficients. Retaining only a certain finite number of leading coefficients we get an approximate solution. The procedure is illustrated by considering two cylindrical samples – one with an elliptical cross-section and the other with a non-elliptical cross-section. The virgin curve and small and large magnetization hysteresis loops for the two samples are obtained.

  12. Habitat selection by Eld's deer following relocation to a patchy landscape.

    Directory of Open Access Journals (Sweden)

    Duo Pan

    Full Text Available An emerging issue in wildlife conservation is the re-establishment of viable populations of endangered species in suitable habitats. Here, we studied habitat selection by a population of Hainan Eld's deer (Cervus eldi relocated to a patchy landscape of farmland and forest. Hainan Eld's deer were pushed to the brink of extinction in the 1970s, but their population expanded rapidly from 26 to more than 1000 individuals by 2003 through effective reserve protection. As part of a wider relocation and population management strategy, 131 deer were removed from the reserve and reintroduced into a farmland-forest landscape in 2005. Habitat use under a context of human disturbance was surveyed by monitoring 19 radio-collared animals. The majority of deer locations (77% were within 0.6-2 km of villages. Annual home ranges of these collared deer averaged 725 ha (SD 436, which was 55% of the size of the reserve from which they had originated. The annual home ranges contained 54% shrub-grassland, 26% forest and 15% farmland. The relocated deer population selected landscape comprising slash-and-burn agriculture and forest, and avoided both intensively farmed areas and areas containing only forest. Within the selected landscape, deer preferred swiddens and shrub-grasslands. Forests above 300 m in elevation were avoided, whereas forests below 300 m in elevation were overrepresented during the dry season and randomly used during the wet season. Our findings show that reintroduced deer can utilize disturbed habitats, and further demonstrate that subsistence agroforest ecosystems have the capacity to sustain endangered ungulates.

  13. Dielectric relaxation phenomena of rigid polar liquid molecules under giga hertz electric field

    Indian Academy of Sciences (India)

    K Dutta; S K Sit; S Acharyya

    2001-10-01

    The dielectric relaxation phenomena of rigid polar liquid molecules chloral and ethyltrichloroacetate () in benzene, -hexane and -heptane () under 4.2, 9.8 and 24.6 GHz electric fields at 30°C are studied to show the possible existence of double relaxation times 2 and 1 for rotations of the whole and the flexible parts of molecules. The probability of showing double relaxation is more in aliphatic solvents indicating their nonrigidity. The symmetric and asymmetric distribution parameters and are obtained from $'_{ij}/_{0ij}$ and $''_{ij}/_{0ij}$ at $w_{j}→ 0$ where $'_{ij}$ and $''_{ij}$ are real and imaginary parts of the complex orientational susceptibility $^{*}_{ij}$ and $_{0ij}$ is the low frequency susceptibility which is real. $_{ij}$’s are involved with the measured dielectric relative permittivities $'_{ij}$, $''_{ij}$, $_{0ij}$ and $_{∞ ij}$ of solutions. The theoretical weighted contributions $c_{1}$ and $c_{2}$ towards dielectric dispersions by Fröhlich’s method are compared with the experimental ones obtained from the graphical variation of $'_{ij}/_{0ij}$ and $''_{ij}/_{0ij}$ with weight fractions $w_{j}$’s at $w_{j}→ 0$. The measured dipole moments $_{2}$ and $_{1}$ of the whole and the flexible part of a polar molecule in terms of the linear coefficients 's of $'_{ij}$’s with $w_{j}$’s and the estimated $_{2}$ and $_{1}$ reveal their associations with aliphatic solvents. The theoretical dipole moments $_{\\text{theo}}$’s from the available bond angles and bond moments of the substituent polar groups of the molecules with the estimated ’s suggest the mesomeric, inductive and electromeric effects in them under GHz electric field.

  14. Habitat selection by Eld's deer following relocation to a patchy landscape.

    Science.gov (United States)

    Pan, Duo; Song, Yan-Ling; Zeng, Zhi-Gao; Bravery, Benjamin D

    2014-01-01

    An emerging issue in wildlife conservation is the re-establishment of viable populations of endangered species in suitable habitats. Here, we studied habitat selection by a population of Hainan Eld's deer (Cervus eldi) relocated to a patchy landscape of farmland and forest. Hainan Eld's deer were pushed to the brink of extinction in the 1970s, but their population expanded rapidly from 26 to more than 1000 individuals by 2003 through effective reserve protection. As part of a wider relocation and population management strategy, 131 deer were removed from the reserve and reintroduced into a farmland-forest landscape in 2005. Habitat use under a context of human disturbance was surveyed by monitoring 19 radio-collared animals. The majority of deer locations (77%) were within 0.6-2 km of villages. Annual home ranges of these collared deer averaged 725 ha (SD 436), which was 55% of the size of the reserve from which they had originated. The annual home ranges contained 54% shrub-grassland, 26% forest and 15% farmland. The relocated deer population selected landscape comprising slash-and-burn agriculture and forest, and avoided both intensively farmed areas and areas containing only forest. Within the selected landscape, deer preferred swiddens and shrub-grasslands. Forests above 300 m in elevation were avoided, whereas forests below 300 m in elevation were overrepresented during the dry season and randomly used during the wet season. Our findings show that reintroduced deer can utilize disturbed habitats, and further demonstrate that subsistence agroforest ecosystems have the capacity to sustain endangered ungulates. PMID:24614039

  15. Analytic methods for field induced tunneling in quantum wells with arbitrary potential profiles

    Indian Academy of Sciences (India)

    S Panda; B K Panda

    2001-06-01

    Electric field induced tunneling is studied in three different types of quantum wells by solving time-independent effective mass equation in analytic methods based on three different Airy function approaches. Comparison of different Airy function methods indicates that they are identical and connected to each other by the Breit–Wigner formula.

  16. Remarks on quantum field theory on de Sitter and anti-de Sitter space-times

    Indian Academy of Sciences (India)

    Henri Epstein

    2012-06-01

    This is a short review of work done in common with Jacques Bros, Michel Gaudin, Ugo Moschella, and Vincent Pasquier. Among results are explicit Källén–Lehmann representations for products of two free-field two-point functions in the de Sitter and the anti-de Sitter spaces and applications to particle decay.

  17. Viscoelastic material properties’ identification using high speed full field measurements on vibrating plates

    Directory of Open Access Journals (Sweden)

    Pierron F.

    2010-06-01

    Full Text Available The paper presents an experimental application of a method leading to the identification of the elastic and damping material properties of isotropic vibrating plates. The theory assumes that the searched parameters can be extracted from curvature and deflection fields measured on the whole surface of the plate at two particular instants of the vibrating motion. The experimental application consists in an original excitation fixture, a particular adaptation of an optical full-field measurement technique, a data preprocessing giving the curvature and deflection fields and finally in the identification process using the Virtual Fields Method (VFM. The principle of the deflectometry technique used for the measurements is presented. First results of identification on an acrylic plate are presented and compared to reference values. Details about a new experimental arrangement, currently in progress, is presented. It uses a high speed digital camera to over sample the full-field measurements.

  18. Electric field generated solitons, disclinations and vortical flows in freely suspended nematic 8CB

    Indian Academy of Sciences (India)

    K S Krishnamurthy; R Balakrishnan

    2003-08-01

    We present the results of optical studies on the instabilities in a substrate-free nematic 8CB film, subject to an in-plane electric field. The initial director field involves a -1/2 strength disclination loop, separating the central pseudoisotropic zone from the splay-bend (SB) birefringent boundary. Three regimes of sample thickness are distinguishable on the basis of field-induced instabilities. Thick (∼ 75 m) films display growth of SB zones (independently of disclination movement), wall-formation, and reversible transition between walls and disclinations. Moderately thick films, a few m in the central part, exhibit distinctive undulations at the border of advancing SB layers. Submicron thin films, with smectic-like homeotropic central plateau, show spectacular isotropic vortex-pairs at either end of this plateau. Further, the end regions of the birefringent zone exhibit both electro-convective flows and reorientational effects. The latter are associated with the formation of open and closed walls, and loop-wall emission. The final high field instability involves jet-like flows at the two ends of the film.

  19. Simplified and Expanded Input in a Focused Stimulation Program for a Child with Expressive Language Delay (ELD)

    Science.gov (United States)

    Wolfe, Donna L.; Heilmann, John

    2010-01-01

    There is considerable debate regarding the simplification of adults' language when talking to young children with expressive language delays (ELD). While simplified input, also called telegraphic speech, is used by many parents and clinicians working with young children, its use has been discouraged in much of the clinical literature. In addition…

  20. Instability of quark matter core in a compact newborn neutron star with moderately strong magnetic field

    Indian Academy of Sciences (India)

    Sutapa Ghosh; Somenath Chakrabarty

    2003-05-01

    It is explicitly shown that if phase transition occurs at the core of a newborn neutron star with moderately strong magnetic field strength, which populates only the electron’s Landau levels, then in the -equilibrium condition, the quark core is energetically much more unstable than the neutron matter of identical physical condition.

  1. Strain field due to transition metal impurities in Ni and Pd

    Indian Academy of Sciences (India)

    Hitesh Sharma; S Prakash

    2003-01-01

    The strain field due to body centered substitutional transition metal impurities in Ni and Pd metals are investigated. The calculations are carried out in the discrete lattice model of the metal using Kanzaki lattice static method. The effective ion–ion interaction potential due to Wills and Harrison is used to evaluate dynamical matrix and the impurity-induced forces. The results for atomic displacements due to 3d, 4d and 5d impurities (Fe, Co, Cu, Nb, Mo, Pd, Pt and Au) in Ni and (Fe, Co, Cu, Ni, Nb, Mo, Pt and Au) impurities in Pd are given up to 25 NN’s of impurity and these are compared with the available experimental data. The maximum displacements of 4.6% and 3.8% of 1NN distance are found for NiNb and PdNb alloys respectively, while the minimum displacements of 0.63% and 0.23% of 1NN distance are found for NiFe and PdFe alloys respectively. Except for Cu, the atomic displacements are found to be proportional to the core radii and d state radius. The relaxation energies for 3d impurities are found less than those for 4d and 5d impurities in Ni and Pd metals. Therefore, 3d impurities may easily be solvable in these metals.

  2. Dynamical interplay between fluctuations, electric fields and transport in fusion plasmas

    Indian Academy of Sciences (India)

    C Hidalgo; B Gonçalves; M A Pedrosa

    2003-12-01

    A view of recent experimental results and progress in the characterization of the statistical properties of electrostatic turbulence in magnetically confined devices is given. An empirical similarity in the scaling properties of the probability distribution function (PDF) of turbulent transport has been observed in the plasma edge region in fusion plasmas. The investigation of the dynamical interplay between fluctuation in gradients, turbulent transport and radial electric fields has shown that these parameters are strongly coupled both in tokamak and stellarator plasmas. The bursty behaviour of turbulent transport is linked with a departure from the most probable radial gradient. The dynamical relation between fluctuations in gradients and transport is strongly affected by the presence of sheared poloidal flows which organized themselves near marginal stability. These results emphasize the importance of the statistical description of transport processes in fusion plasmas as an alternative approach to the traditional way to characterize transport based on the computation of effective transport coefficients.

  3. Relaxation phenomena of polar non-polar liquid mixtures under low and high frequency electric field

    Indian Academy of Sciences (India)

    K Dutta; S K Sit; S Acharyya

    2003-10-01

    Simultaneous calculation of the dipole moment and the relaxation time of a certain number of non-spherical rigid aliphatic polar liquid molecules () in non-polar solvents () under 9.8 GHz electric field is possible from real $'$ and imaginary $''$ parts of the complex relative permittivity $^{*}_{}$. The low frequency and infinite frequency permittivities 0 and ∞ measured by Purohit et al [1,2] and Srivastava and Srivastava [3] at 25, 35 and 30°C respectively are used to obtain static . The ratio of the individual slopes of imaginary and real $'$ parts of high frequency (hf) complex conductivity $^{*}_{}$ with weight fractions at → 0 and the slopes of $''_{}-'_{}$ curves for different s [4] are employed to obtain s. The former method is better in comparison to the existing one as it eliminates polar–polar interaction. The hf s in Coulomb metre (C m) when compared with static and reported s indicate that ss favour the monomer formations which combine to form dimers in the hf electric field. The comparison among s shows that a part of the molecule is rotating under X-band electric field [5]. The theoretical theos from available bond angles and bond moments of the substituent polar groups attached to the parent molecules differ from the measured s and s to establish the possible existence of mesomeric, inductive and electromeric effects in polar liquid molecules.

  4. A normalized wavefi eld separation cross-correlation imaging condition for reverse time migration based on Poynting vector

    Institute of Scientific and Technical Information of China (English)

    Chen Ting; He Bing-Shou

    2014-01-01

    Prestack reverse time migration (PSTM) is a common imaging method; however low-frequency noises reduce the structural imaging precision. Thus, the suppression of migration noises must be considered. The generation mechanism of low-frequency noises is analyzed and the up-, down-, left-, and right-going waves are separated using the Poynting vector of the acoustic wave equation. The computational complexity and memory capacitance of the proposed method are far smaller than that required when using the conventional separation algorithm of 2D Fourier transform. The normalized wavefield separation cross-correlation imaging condition is used to suppress low-frequency noises in reverse time migration and improve the imaging precision. Numerical experiments using the Marmousi model are performed and the results show that the up-, down-, left-, and right-going waves are well separated in the continuation of the wavefi eld using the Poynting vector. We compared the imaging results with the conventional method, Laplacianfi ltering, and wavefi eld separation with the 2D Fourier transform. The comparison shows that the migration noises are well suppressed using the normalized wavefi eld separation cross-correlation imaging condition and higher precision imaging results are obtained.

  5. Effect of magnetic field on the propagation of quasi-transverse waves in a nonhomogeneous conducting medium under the theory of nonlinear elasticity

    Indian Academy of Sciences (India)

    D P Acharya; Asit Kumar Mondal

    2006-06-01

    The object of the present paper is to investigate the propagation of quasi-transverse waves in a nonlinear perfectly conducting nonhomogeneous elastic medium in the presence of a uniform magnetic field transverse to the direction of wave propagation. Different types of figures have been drawn to exhibit the distortion of waves due to the presence of magnetic field and the nonhomogeneous nature of the medium. Formation of shocks has also been numerically discussed.

  6. The second Born approximation of electron–argon elastic scattering in a bichromatic laser field

    Indian Academy of Sciences (India)

    Bin Zhou; Ming-Yang Zheng; Da-Yong Wen

    2012-03-01

    We study the elastic scattering of atomic argon by electron in the presence of a bichromatic laser field in the second Born approximation. The target atom is approximated by a simple screening potential and the continuum states of the impinging and emitting electrons are described as Volkov states. We evaluate the S-matrix elements numerically. The dependence of differential cross-section on the relative phase between the two laser components is presented. The results obtained in the first and second Born approximations are compared and analysed.

  7. Rut-induced changes in the activity budgets of male tropical ungulates: Eld's deer on Hainan Island

    Institute of Scientific and Technical Information of China (English)

    Jianhua DING; Zhitao LIU; Yanling SONG; Zhigao ZENG; Qiong ZHANG; Benjamin D.BRAVERY

    2012-01-01

    Aspects of time budgets,activity patterns and rut-related changes in behavior are well documented in temperate ungulates; however,the application of this understanding to tropical and sub-tropical ungulate species has attracted less attention and remains an area that may re-shape our knowledge of ungulate behavior.Eld's deer Cervus eldi hainanus has a tropical and sub-tropical distribution on Hainan Island,China,and males have an extended rut exceeding five months during which they do not maintain harems or defend resources.We studied males from the only remaining population on Hainan Island,and describe rut-related changes in behavior by collecting data on time budgets and activity patterns.We show that male Eld's deer do not follow a strict crepuscular activity pattern,do not spend the majority of their time foraging and do not increase foraging nor display rut-induced hypophagia during rut,in obvious contrast to temperate ungulates.These results are discussed in light of current hypotheses explaining the proximate mechanisms governing feeding time in ungulates,while appreciating the need for further research.

  8. International validation of the EORTC QLQ-ELD14 questionnaire for assessment of health-related quality of life elderly patients with cancer

    Science.gov (United States)

    Wheelwright, S; Darlington, A-S; Fitzsimmons, D; Fayers, P; Arraras, J I; Bonnetain, F; Brain, E; Bredart, A; Chie, W-C; Giesinger, J; Hammerlid, E; O'Connor, S J; Oerlemans, S; Pallis, A; Reed, M; Singhal, N; Vassiliou, V; Young, T; Johnson, C

    2013-01-01

    Background: Older people represent the majority of cancer patients but their specific needs are often ignored in the development of health-related quality of life (HRQOL) instruments. The European Organisation for Research and Treatment of Cancer (EORTC) QLQ-ELD15 was developed to supplement the EORTC's core questionnaire, the QLQ-C30, for measuring HRQOL in patients aged >70 years in oncology studies. Methods: Patients (n=518) from 10 countries completed the QLQ-C30, QLQ-ELD15 and a debriefing interview. Eighty two clinically stable patients repeated the questionnaires 1 week later (test–retest analysis) and 107 others, with an expected change in clinical status, repeated the questionnaires 3 months later (response to change analysis, RCA). Results: Information from the debriefing interview, factor analysis and item response theory analysis resulted in the removal of one item (QLQ-ELD15→QLQ-ELD14) and revision of the proposed scale structure to five scales (mobility, worries about others, future worries, maintaining purpose and illness burden) and two single items (joint stiffness and family support). Convergent validity was good. In known-group comparisons, the QLQ-ELD14 differentiated between patients with different disease stage, treatment intention, number of comorbidities, performance status and geriatric screening scores. Test–retest and RCA analyses were equivocal. Conclusion: The QLQ-ELD14 is a validated HRQOL questionnaire for cancer patients aged ⩾70 years. Changes in elderly patients' self-reported HRQOL may be related to both cancer evolution and non-clinical events. PMID:23868003

  9. International validation of the EORTC QLQ-ELD14 questionnaire for assessment of health-related quality of life elderly patients with cancer

    OpenAIRE

    Wheelwright, S; Darlington, A-S.; Fitzsimmons, D; Fayers, P.; Arraras, J.I.; Bonnetain, F.; Brain, E; Bredart, A; Chie, W-C; Giesinger, J; Hammerlid, E; O'Connor, S. J.; Oerlemans, S; Pallis, A; Reed, M

    2013-01-01

    Background: Older people represent the majority of cancer patients but their specific needs are often ignored in the development of health-related quality of life (HRQOL) instruments. The European Organisation for Research and Treatment of Cancer (EORTC) QLQ-ELD15 was developed to supplement the EORTC's core questionnaire, the QLQ-C30, for measuring HRQOL in patients aged >70 years in oncology studies. Methods: Patients (n=518) from 10 countries completed the QLQ-C30, QLQ-ELD15 and a debriefi...

  10. Dielectric relaxation studies in 5CB nematic liquid crystal at 9 GHz under the influence of external magnetic field using microwave cavity spectrometer

    Indian Academy of Sciences (India)

    Manoj Johri; Abhay Saxena; S Johri; S Saxena; D P Singh

    2011-04-01

    Resonance width, shift in resonance frequency, relaxation time and activation energy of 5CB nematic liquid crystal are measured using microwave cavity technique under the influence of an external magnetic field at 9 GHz and at different temperatures. The dielectric response in liquid crystal at different temperatures and the effects of applied magnetic field on transition temperatures are studied in the present work. The technique needs a small quantity (< 0.001 cm3) of the sample and provides fruitful information about the macroscopic structure of the liquid crystal.

  11. Dielectric behaviour of some amides and formamides dissolved in nonpolar solvents under static electric field

    Indian Academy of Sciences (India)

    S Sahoo; S K Sit

    2011-08-01

    Structural and associational aspects of polar amides () like formamide, acetamide, Nmethyl acetamide (NMA), N,N-dimethyl formamide (DMF), N,N-dimethyl acetamide (DMA) and acetanilide dissolved in the nonpolar solvent () benzene or 1,4-dioxan have been estimated from the measured static relative permittivity 0 and high-frequency permittivity ∞ at different weight fractions s of polar solute at 35°C under static electric field using Debye model of polar liquid molecule. The static dipole moments s are compared with s reported from conductivity method and theoretical theos to get exact cal $\\cdot$ theos of the molecules are predicted from the available bond angles and bond moments where difference in electron affinity exists between two adjacent atoms of a polar group due to inductive, mesomeric and electromeric effects in them. Solute–solute molecular association for NMA in benzene and solute–solvent association for other amides are ascertained to arrive at their conformational structures.

  12. A relativistic mean-field study of magic numbers in light nuclei from neutron to proton drip-lines

    Indian Academy of Sciences (India)

    T K Jha; M S Mehta; S K Patra; B K Raj; Raj K Gupta

    2003-09-01

    In an axially deformed relativistic mean-field calculation of single-particle energy spectra of = 8 (Li–Mg) and = 14, 16 (C–Mg) isotonic chain and the one- and two-neutron separation energies of various isotopes of Li–Mg, new magic numbers are found to exist at = 6 and = 16 and/or = 14, which are in addition to the = 8 and = 20 magic numbers. In neutron-rich nuclei, the shell gap at = 6 is larger than at = 8 and a large gap is observed for = 16 or 14 for the neutron-rich and = 14 for proton-rich nuclei. Large shell gaps are also found to exist at = 14 and 16 or = 16 alone for nuclei near the -stability line. The above results are independent of the parameter sets TM2, NL3 and NL–SH used here. Similarly, new large shell gaps are predicted at = 6, 16 and/or 14 for protons.

  13. Effect of conduction band nonparabolicity on the optical properties in a single quantum well under hydrostatic pressure and electric field

    Indian Academy of Sciences (India)

    S Panda; B Panda

    2012-05-01

    The effect of conduction band nonparabolicity on the linear and nonlinear optical properties such as absorption coefficients, and changes in the refractive index are calculated in the Al0.3Ga0.7As/GaAs heterostructure-based symmetric rectangular quantum well under applied hydrostatic pressure and electric field. The electron envelope functions and energies are calculated in the effective mass equation including the conduction band nonparabolicity. The linear and nonlinear optical properties have been calculated in the density matrix formalism with two-level approximation. The conduction band nonparabolicity shifts the positions of the optical properties and decreases their strength compared to those without this correction. Both the optical properties are enhanced with the applied hydrostatic pressure. While the absorption coefficients are bleached under the combined effect of high pressure and electric field, the bleaching effect is reduced when nonparabolicity is included.

  14. MEMS-based contact stress field measurements at a rough elastomeric layer: local test of Amontons’ friction law in static and steady sliding regimes

    Directory of Open Access Journals (Sweden)

    Debrégeas G.

    2010-06-01

    Full Text Available We present the results of recent friction experiments in which a MEMS-based sensing device is used to measure both the normal and tangential stress fields at the base of a rough elastomer film in frictional contact with smooth, rigid, glass indentors. We consider successively multicontacts under (i static normal loading by a spherical indentor and (ii frictional steady sliding conditions against a cylindrical indentor, for an increasing normal load. In both cases, the measured fields are compared to elastic calculations assuming (i a smooth interface and (ii Amontons’ friction law. In the static case, significant deviations are observed which decrease with increasing load and which vanish when a lubricant is used. In the steady sliding case, Amontons’ law reproduces rather satisfactorily the experiments provided that the normal/tangential coupling at the contact interface is taken into account. We discuss the origin of the difference between the Amontons fields and the measured ones, in particular the effect of the finite normal and tangential compliances of the multicontact interface.

  15. Role of magnetic shear on the electrostatic current driven ion-cyclotron instability in the presence of parallel electric field

    Indian Academy of Sciences (India)

    Harsha Jalori; A K Gwal

    2001-06-01

    Recent observation and theoretical investigations have led to the significance of electrostatic ion cyclotron (EIC) waves in the electrodynamics of acceleration process. The instability is one of the fundamental of a current carrying magnetized plasma. The EIC instability has the lowest threshold current among the current driven instabilities. On the basis of local analysis where inhomogeneities like the magnetic shear and the finite width current channel, have been ignored which is prevalent in the magnetospheric environment. On the basis of non-local analysis interesting modification has been incorporated by the inclusion of magnetic shear. In this paper we provide an analytical approach for the non-local treatment of current driven electrostatic waves in presence of parallel electric field. The growth rate is significantly influenced by the field aligned electron drift. The presence of electric field enhances the growth of EIC waves while magnetic shear stabilizes the system.

  16. Surface critical magnetic field c3() of a bulk superconductor MgB2 using two-band Ginzburg–Landau theory

    Indian Academy of Sciences (India)

    I N Askerzade

    2003-09-01

    Two-band Ginzburg–Landau (TB G–L) equations for a bulk MgB2 were solved analytically to determine the temperature dependence of surface critical magnetic field Hc3(). It is shown that c3() has the same temperature dependence with c2(), similar to the case of a single-band superconductor, c3()=1.66 c2(). We use an elimination procedure for the decoupling of G–L equations of two-band superconductivity, which eases the calculations. It is expected that the temperature dependence for c3() gives positive curvature near c.

  17. Resonant spin-flavor precession constraints on the neutrino parameters and the twisting structure of the solar magnetic fields from the solar neutrino data

    Indian Academy of Sciences (India)

    S Dev; Jyoti Dhar Sharma; U C Pandey; S P Sud; B C Chauhan

    2003-07-01

    Resonant spin-flavor precession (RSFP) scenario with twisting solar magnetic fields has been confronted with the solar neutrino data from various ongoing experiments. The anticorrelation apparent in the Homestake solar neutrino data has been taken seriously to constrain ( 2,') parameter space and the twisting profiles of the magnetic field in the convective zone of the Sun. The twisting profiles, thus derived, have been used to calculate the variation of the neutrino detection rates with the solar magnetic activity for the Homestake, Super-Kamiokande and the gallium experiments. It is found that the presence of twisting reduces the degree of anticorrelation in all the solar neutrino experiments. However, the anticorrelation in the Homestake experiment is expected to be more pronounced in this scenario. Moreover, the anticorrelation of the solar neutrino flux emerging from the southern solar hemisphere is expected to be stronger than that for the neutrinos emerging from the northern solar hemispheres.

  18. Analysis the outcome of proximal humeral fracture in eld treated with locking plates%锁定钢板治疗老年肱骨近端骨折

    Institute of Scientific and Technical Information of China (English)

    张虎; 张凯宁; 任延军

    2011-01-01

    ObjectiveTo observe the clinical effect of proximal humeral fracture in eld treated with locking plates. Method From March 2007 to September 2009, 34 patients with proximal humeral fracture were all treated with locking plates.The average age of patients was 69.5 years(range 60~81).According to Neer classification :2 parts fracture 9cases, 3 parts fracture 19cases, 4 parts fracture 6 cases. Result All patients were all followed up for 8~ 18 months(average 9 months), all fractures occurred bone union, the average time for fracture healing was 3~5 months.The shoulder joint function was evaluated by Neer functional assessment system:excellent 25 cases, good 9 cases. Conclusion Locking plate in treating proximal humeral fracture in eld can obtain satisfactic result and is a good method internal fixation of proximal humeral fracture in eld at present.%目的 探讨应用肱骨近端锁定钢板治疗老年人肱骨近端骨折的疗效.方法 2007年3月~2009年9月使用肱骨近端锁定钢板治疗肱骨近端骨折34例,年龄60~81岁,平均69.5岁.骨折按Neer分型:2部分骨折9例、3部分骨折19例、4部分骨折6例.结果 34例均获随访,随访8~18个月,平均(7.5+1.5)个月.均获骨性愈合,平均愈合时间3~5月.肩关节功能按Neer疗效评分系统评定,优25例、良9例.结论 锁定加压钢板治疗老年人骨折疗效满意,是目前治疗肱骨近端骨折较理想的内固定方法.同时重视肩袖损伤的修复,术后能早期进行功能锻炼,功能恢复良好.

  19. Asymptotic stability of linearly evolving non-stationary modes in a uniform hydromagnetic field over a rotating-disk flow with suction and injection

    Indian Academy of Sciences (India)

    M Turkyilmazoglu

    2009-12-01

    In this paper the linear stability properties of the magnetohydro-dynamic flow of an incompressible, viscous and electrically conducting fluid are investigated for the boundary-layer due to an infinite permeable rotating-disk. The fluid is subjected to an external magnetic field perpendicular to the disk. The interest lies also in finding out the effects of uniform suction or injection. In place of the traditional linear stability method, a theoretical approach is adopted here based on the high-Reynolds-number triple-deck theory. It is demonstrated that the nonstationary perturbations evolve in accordance with an eigenrelation analytically obtained.

  20. Gemlik Zeytin Çeşidinden Elde Edilen Natürel Zeytinyağında Fenol Bileşiklerinin ve Antioksidan Kapasitenin Belirlenmesi

    OpenAIRE

    Kelebek, Haşim; Kesen, Songül; Selli, Çiğdem Sabbağ Serkan

    2012-01-01

    Bu çalışmada, Gemlik zeytin çeşidinden elde edilen zeytinyağının fenol bileşikleri içerikleri ve antioksidan kapasiteleri incelenmiştir. Fenol bileşiklerinin analizleri zıt fazlı, diyot array detektörlü HPLC-MS cihazıyla ve tanımlamaları ise sıvı kromatografisi-kütle spektrometrisi (LC-MS) ile gerçekleştirilmiştir. Araştırmada, hidroksitirozol, 4-hidroksibenzoik asit, tirozol, 2,3-dihidroksibenzoik asit,  kafeik asit, vanilik asit, vanilin, sirinjik asit, p-kumarik asit, ferulik asit, sinamik...

  1. Hindiba (Cichorium intybus L. Bitkisinden Myrosinaz Enziminin Saflaştırılması, Karakterize Edilmesi ve Kozmetik Alanında Kullanılabilirliğinin İncelenmesi

    Directory of Open Access Journals (Sweden)

    Nazan DEMİR

    2014-07-01

    Full Text Available Myrosinaz glukosinolatların hidrolizinden sorumlu bir enzimdir (E.C: 3.2.3.2 β-thioglucosidase, β-thioglucoside glucohydrolase olarak da bilinir. Kanserle mücadele için umut verici bileşikler olarak kabul edilen sinigrin, glukoraphanin (GRA ve glukoraphenin (GRE gibi ara yıkım ürünlerinden dolayı bazı alifatik glukosinolatlar oldukça ilgi çekmiş ve myrosinaz enziminin bu tümör küçültücü etkisi son yıllarda önem kazanmıştır. Bu çalışmada, myrosinaz amonyum sülfat çöktürmesi, Q-sepharose, Konkanavalin A sepharose afinite kromatografisi ile Hindiba'dan (Cichorium intybus'un L. homojen olarak saflaştırıldı. Saflaştırılan protein SDS- poliakrilamid jel elektroforezinde 35 kDa ağırlığında tek bir bant olarak gözlenmiştir. Enzim pH 8,0'de ve 70 °C' de maksimum aktivite göstermiştir. Saflaştırılmış enzim 1 yıldan fazla süreyle 4° C de sabit kalmıştır. Substrat olarak sinigrin kullanılarak, saflaştırılmış enzim için KM ve Vmax değerleri sırasıyla 0,02 ve 0,074 μmol glukoz. min–1.mg–1 olarak belirlenmiştir. Enzim askorbik asit (AA, EDTA, SDS ve β-merkaptoethanol tarafından güçlü bir şekilde aktive edilmiştir. Buna ek olarak, bazı iyonların myrosinaz enzim aktivitesi üzerine 10, 1 ve 0,1 mM'lık konsantrasyonlardaki etkileri (Cu2+, Ni2+, Ca2+ incelenmiş ve enzim aktivitesini önemli ölçüde etkiledikleri belirlenmiştir. Hindiba (Cichorium intybus'un L.'dan elde edilen myrosinaz enziminin kozmetikte kullanılabilirliliği araştırılmıştır. Çalışmada saf myrosinaz enzimi içeren krem oluşturulmuş ve karışım güneş lekesi ve benzeri cilt sorunları olan 10 gönüllü denek üzerinde 20 gün süreyle uygulanmıştır. Belirlenen gün sonunda deneklerde mevcut olan lekelerin şiddetinde kısmi azalmalar gözlenmiştir.

  2. 海南坡鹿栖息地的外来植物调查%Field Survey of Alien Plants in Habitats of Hainan Eld's Deer ( Cervus eldi hainanus )

    Institute of Scientific and Technical Information of China (English)

    符明利; 吴琳琳; 侯荣; 林思亮

    2012-01-01

    Hainan Eld's deer ( Cervus eldi hainanus ) is a national - level protected species and endemic to China. The stability and development of Eld's deer habitats play a significant role in population growth. Alien invasive plants can affect habitats ir- reversibly over long time periods. We surveyed the alien plants in Hainan Datian National Nature Reserve, where Hainan Eld's deer occur, using line transects and quadrats from 2009 to 2011. We recorded 115 alien plant species of 40 families and 95 genera. Among these, 80 herbs accounted for 70% and most are tropical species, 50% were introduced from the Americas and were mainly distributed in grasslands. The widely distributed alien plants impact the abundance and distribution of native spe- cies and may have a negative effect on Eld's deer food resource in future. We make several recommendations for effective man- agement and conservation. Our survey results can provide a basis for maintaining the stability of Hainan Eld's deer habitat.%海南坡鹿是中国特有的国家Ⅰ级重点保护野生动物,其栖息地的稳定和发展对该物种种群有重要意义。潜在的外来入侵植物会对栖息地产生长期不可恢复的影响。因此,我们于2009—2011年采用样方调查和线路调查相结合的方法对海南坡鹿的栖息地海南大田国家级自然保护区内的外来植物进行了调查,共记录外来植物40科95属115种。其中,草本植物80种,占总物种数的69.6%;不论从科区系还是属区系上看,外来植物的区系分布都具有热带性;50.4%的外来植物产自美洲,在草地中分布最多。保护区内分布广泛的外来植物已对乡土物种产生一定的影响,也将可能对坡鹿的食物资源产生不利影响。根据调查结果,我们提出了一些保护管理建议。

  3. From research to field action: example of the fight against cholera in the Democratic Republic of Congo

    Directory of Open Access Journals (Sweden)

    R. Piarroux

    2010-09-01

    Full Text Available The Democratic Republic of Congo (DRC is the country in the world which reported the highest number of cholera cases to WHO from 2002 to 2007 (128 936 cases out of a worldwide 902 071 cases. We, therefore, implemented research work which intends to understand the epidemiology of cholera in the DRC and to ensure improvements in the strategy to fight against cholera. This broad study enabled us to accurately determine the cholera epidemic’s mechanisms on different scales; to identify the source zones of the disease, and the groups of populations acting as vectors of the spread. It was then possible to demonstrate the role of “sanctuary”, played by some suburbs of lakeside cities. A collaborative network, including several scientific institutions in Europe and in the DRC, local and national government administrations in the field of public health and sanitation, international agencies, NGOs and private foundations, was progressively set up. Following the conclusions of our epidemiological studies, a drastic change of strategy was proposed: the limited curative approach on the one hand, the few existing water/sanitation programs on the other hand, have been merged in a global approach involving a larger scale water and sanitation infrastructure improvement, environmental protection, hygiene awareness and medical surveys targeting a few focus areas playing a central role in the epidemics. In conclusion, by better targeting intervention zones, one can gather human and technical resources previously scattered on the vast territory of the DRC. The strategy presented here revives the hope to eliminate cholera in the DRC.La République Démocratique du Congo (RDC est le pays qui a déclaré le plus grand nombre de cas de choléra à l’OMS entre 2002 et 2007 (128 936 cas sur un nombre total de 902 071 de cas dans le monde. Face à cette situation, nous avons mis en œuvre un travail de recherche qui vise à comprendre l’épidémiologie du

  4. Öküzgözü ve Boğazkere Üzümlerinden Elde Edilen Şaraplardaki Fenol Bileşikleri Üzerine Cibre Fermentasyonu Süresinin Etkisi

    OpenAIRE

    Deryaoğlu, Ahmet; Colin, Jean Luc; CANBAŞ, Ahmet

    1997-01-01

    Bu çalışmada, Elazığ yöresinde yetiştirilen şaraplık siyah Öküzgözü ve Boğazkere üzümlerinden elde edilen şaraplardaki fenol bileşikleri üzerine cibre fermentasyonu süresinin etkisi incelenmiştir. Şaraplarda fenol bileşikleri ile ilgili olarak, toplam fenol bileşikleri (gallik asit cinsinden), D280 indisi, antosiyan, renk yoğunluğu ve renk tonu analizleri yapılmıştır. Analiz sonuçlarına göre, cibre fermentasyonu süresi arttıkça, şaraplarda toplam fenol bileşikleri ve antosiyan miktarları artm...

  5. The Early Diagnostic Value of Serum Procalcitonin in Eldely Patients with Severe Pneumonia%降钙素原对老年性重症肺炎早期诊断的价值

    Institute of Scientific and Technical Information of China (English)

    高萌萌; 崔丽

    2014-01-01

    目的评价血清降钙素原(procalcitonin,PCT)对老年性重症肺炎早期诊断的价值及临床意义。方法入院24 h内抽取30例老年性重症肺炎患者及30例轻症老年肺炎患者血液,检测PCT、C反应蛋白、白细胞计数、血沉,并对比。结果 PCT与其他指标相比,具有较高的灵敏性及特异性。结论 PCT对肺炎的诊断有一定的价值,对老年性重症肺炎早期诊断及病情评估价值更大,与肺炎的严重程度具有相关性。%Objective To investigate the early diagnostic value and clinical significanca of serum procalcitonin in eldely patients with severe pneumonia. Methods Drawed blood from 30 eldely patients with severe pneumonia and mild pneumonia respectively within 24h admission,simultaneously determined and compared procalcitonin,c-reactive protein levels,white blood cellcount,erythrocyte-sedimentation rate. Results Compared with other index, the procalcitonin has high sensitivity and specificity. Conclusion The procalcitonin has diagnosis value to roentgenodiagnosis of pneumonia.It has great value in diagnosis early and estimation prognosis diagnosis,and has positive correlation with the disease severity.

  6. Evsel Atıklardan Elde Edilen Kompostun Mısır ve Biberin Gelişimi ve Besin Elementi İçeriğine Etkisi

    Directory of Open Access Journals (Sweden)

    Derviş AYNACI

    2016-04-01

    Full Text Available Araştırmada, 1 ay süre ile 10 ayrı haneden mutfak atıkları toplanmış, toplanan evsel atıklardan elde edilen kompostun sera koşullarında mısır ve biber bitkilerinin gelişimi ve besin elementi içeriğine etkisi araştırılmıştır. Deneme 2 kg toprak alan saksılarda yürütülmüş olup, kompostun 6 (0, 0.25, 0.50, 1.00, 2.00 ve 4.00 ton/da dozu uygulanmıştır. Araştırma, 4 paralelli olarak, tesadüf parselleri deneme desenine göre planlanmış ve 2 ay süreyle yürütülmüştür. Araştırma sonunda hasat edilen bitkilerde kuru ağırlık değerleriyle N, P, K, Ca, Mg, Fe, Cu, Zn ve Mn konsantrasyonları belirlenmiştir. Uygulanan kompost miktarı arttıkça bitki kuru ağırlığı artmış, biber bitkisinin N konsantrasyonunda 2-2.4 kat arasında artışlar görülmüştür. Mısır bitkisi N konsantrasyonları da kompost dozlarından olumlu etkilenmiş fakat burada dozlar arası fark önemli olmamıştır. Bitkilerde P, K ve Ca konsantrasyonları kompost miktarı arttıkça olumlu yönde etkilenmiş, biberde Fe, Zn ve Mn konsantrasyonları, mısırda ise Mn konsantrasyonu etkisi istatistiksel anlamda önemli bulunmuştur.

  7. ATIK KIZARTMA YAĞINDAN ELDE EDİLEN METİL ESTERİN ÖN YANMA ODALI BİR DİZEL MOTORDA KULLANIMININ PERFORMANS VE EMİSYONLARA ETKİSİNİN İNCELENMESİ

    OpenAIRE

    ÖZSEZEN, Ahmet Necati; Mustafa ÇANAKÇI

    2013-01-01

    Bu çalışmada, palmiye yağı kökenli atık kızartma yağından elde edilen metil ester, dört silindirli, doğal emişli, ön yanma odalı bir dizel motorda alternatif dizel yakıtı olarak kullanılmıştır. Elde edilen motor test sonuçları, petrol kökenli dizel yakıt (PKDY) ile yapılan ölçümler referans alınarak karşılaştırılmıştır. Motor performansı ve egzoz emisyon seviyelerini belirlemek amacıyla, motor tam yük-değişik devir testlerine tabi tutulmuştur. Deneyler sonucunda, metil ester kullanımı ile mot...

  8. Süt Fabrikası Atık Sularından İzole Edilen Mikroorganizmalardan Elde Edilen Biyosürfektanların Bitki Patojeni Fusarium Türleri Üzerine Antifungal Etkilerinin Araştırılması

    Directory of Open Access Journals (Sweden)

    Fadime YILMAZ

    2014-02-01

    Full Text Available Bu çalışmada süt fabrikası atık sularından izole edilen farklı mikroorganizmalardan biyosürfektanlar elde edilmiş ve bu maddelerin antifungal aktiviteleri test edilmiştir. Bu amaçla Ankara Atatürk Orman Çiftliği Süt ve Süt Mamulleri Fabrikası atık su örneklerinden beş farklı mikroorganizma izole edilmiştir. Sadece üç izolatın biyosürfektan ürettiği belirlenmiştir. Biyosürfektan üreten izolatlar, identifikasyon testleri sonucunda Yarrowia lipolytica, Micrococcus luteus ve Burkholderia cepacia olarak tanımlanmışlardır. Y. lipolytica, M. luteus ve B. cepacia'dan üretilen ve sırasıyla BS-I, BS-II ve BS-III olarak kodlanmıştır. Elde edilen biyosürfektanların, bitki patojeni olan Fusarim cinsine ait Fusarium avenaceum ATCC 200466, Fusarium graminearum ATCC 15624, Fusarium inflexum ATCC 32211 ve Fusarium heterosporium ATCC 15625 türleri üzerine antifungal etkileri tespit edilmiştir. Tüm biyosürfektanların denenen funguslara karşı farklı antifungal aktivite sergiledikleri saptanmıştır. BS-III'ün en yüksek ve düşük misel inhibisyon oranları sırasıyla, % 71 oranında F. graminearum' da ve % 39 oranında F. heterosporium'da belirlenmiştir. Anahtar kelimeler: Süt Fabrikası Atık Suları, Biyosürfektan, Antifungal Etki, Fusarium

  9. Effects of psychological intervention on the mental health and coping style of perinatal eld gravida and puerpera%心理干预对围产期高龄孕产妇心理健康及应对方式的影响

    Institute of Scientific and Technical Information of China (English)

    邝云航; 赵莉; 张健平

    2009-01-01

    目的 探讨心理干预对围产期高龄孕产妇心理健康状况及应对方式的影响. 方法 将围产期高龄孕妇随机分为干预组141例和对照组145例,两组均进行常规的产前教育,干预组施以心理干预.观察时间为孕28 w~产后1 w.于心理干预前后(孕28 w及产后1 w)采用症状自评量表及应对方式问卷进行评定分析. 结果 心理干预后,干预组人际关系敏感、焦虑、强迫、抑郁、敌对分较干预前显著降低(P<0.05或0.01);其解决问题、求助等积极应对因子分较干预前显著提高(P<0.05),而自责、幻想、退避等消极应对因子分较干预前显著性降低(P<0.05).对照组仅抑郁因子和幻想因子得分有显著性变化(P<0.05). 结论 心理干预有助于提高围产期高龄孕产妇的心理健康水平和改善应对方式.%Objective To explore the effects of psychological intervention on the mental health and coping style of perinatal eld gravida and puerpera. Methods Perinatal eld gravida and puerpera were randomly divided into intervention(n=141) and control group(n=145), assessments and control study were conducted with the Symptom Checklist-90(SCL-90) and Coping Style Questionnaire(CSQ) before and after intervention(week 28 of pregnancy and 1 week after childbirth). Results After intervention, the score of interpersonal relation sensitiveness,anxiety,coercion,depression and hostility were significantly lower compared with pre-intervention in the intervention group(P<0.05 or 0.01); their active coping factors such as problem solving and help score were significantly higher(P<0.05) and inactive factors as self-reproach, illusion and avoidance lower(P<0.05). In control group, depression and illusion score had obvious changes only(P<0.05). Conclusion Psychological intervention is helpful to improving mental health level and coping style for perinatal eld gravida and puerpera.

  10. 沐舒坦雾化吸入治疗老年慢性支气管炎急性发作临床观察%Clinical observation of mucosolvan atomizing inhalation in the treatment of acute exacerbations of chronic bronchitis in eldly patients

    Institute of Scientific and Technical Information of China (English)

    孟蕾; 朱剑

    2015-01-01

    目的:观察沐舒坦雾化吸入治疗老年慢性支气管炎急性发作患者的临床疗效。方法:收治老年慢性支气管炎急性发作患者106例,分为雾化吸入组和静脉滴注组,雾化吸入组给予沐舒坦雾化吸入治疗,静脉滴注组给予沐舒坦静脉滴注治疗,比较两组疗效。结果:雾化吸入组的临床治疗总有效率明显高于静脉滴注组,咳嗽缓解时间、喘息缓解时间明显早于静脉滴注组,住院时间明显短于静脉滴注组(P<0.05)。结论:沐舒坦雾化吸入治疗老年慢性支气管炎急性发作患者起效更快,临床治疗效果更确切。%Objective:To explore the clinical effect of mucosolvan aerosol inhalation in the treatment of acute exacerbations of chronic bronchitis in eldly patients.Methods:106 elderly patients with acute exacerbation of chronic bronchitis patients were selected.They were divided into the atomizing inhalation group and intravenous infusion group.The atomizing inhalation group was given mucosolvan aerosol inhalation.The intravenous infusion group was given ambroxol intravenous drip treatment.We compared the efficacy of two groups.Results:In the atomizing inhalation group,the total efficiency of clinical treatment was significantly higher than that of intravenous infusion group;the remission time of cough,the remission time of breathing were significantly earlier than the intravenous infusion group;the hospitalization time was significantly shorter than the intravenous infusion group(P<0.05).Conclusion:The onset of mucosolvan aerosol inhalation in the treatment of acute exacerbations of chronic bronchitis in eldly patients was faster.Clinical therapeutic effect was more precise.

  11. Cibre Fermantasyonu Süresinin Öküzgözü ve Boğazkere Üzümlerinden Karıştırılarak Elde Edilen Şarapların Fenol Bileşikleri ve Kalitesi Üzerine Etkisi

    OpenAIRE

    Cabaroğlu, Turgut; ERTEN, Hüseyin; Ünal, M. Ümit; Bozdoğan, Adnan

    2006-01-01

    Farklı oranlarda karıştırılan Öküzgözü ve Boğazkere üzümlerinden kırmızı şarap üretimi sırasında, uygulanan cibre fermantasyonu süresinin, şaraptaki fenol bileşikleri ve şarap kalitesi üzerine etkisi araştırılmıştır. Öküzgözü ve Boğazkere üzümleri (1:1) ve (2:1) oranlarında karıştırılmıştır. Her karışım 3 eşit kısma ayrılmış ve sabit sıcaklıkta (25 °C) 3, 5 ve 7 gün cibre fermantasyonu uygulanarak şaraba işlenmiştir. Elde edilen şaraplar üzerinde genel analizler, fenol bileşikleri analizleri ...

  12. Yağ Gülü (Rosa damascena Mill.’nde Tepe Boşluğu Katı Faz Mikro Ekstraksiyonu (HS-SPME ve Konvansiyonel Su Distilasyonu Yöntemleri ile Elde Edilen Uçucu Bileşenlerin Karşılaştırılması

    Directory of Open Access Journals (Sweden)

    Hasan BAYDAR

    2016-04-01

    Full Text Available Yağ gülü (Rosa damascena Mill., kendine özgü doğal koku bileşenleri nedeniyle parfüm ve kozmetik endüstrisinde değerlendirilen en önemli kokulu gül türüdür. Bu araştırmada, taze yağ gülü çiçeklerinin sepal (çanak yaprak, petal (taç yaprak, stamen (erkek organ ve pistil (dişi organ olarak ayrılan kısımlarının uçucu bileşenleri gaz kromatografisi/kütle spektrometresi (GC-MS ile kombine edilmiş Tepe Boşluğu-Katı Faz Mikro Ekstraksiyon (HS-SPME tekniği ile tespit edilmiştir. Ayrıca taze yağ gülü çiçekleri konvansiyonel hidro-Clevenger su distilasyonu yöntemi ile damıtılmış, elde edilen uçucu yağların bileşenleri GC-MS ile belirlendikten sonra HS-SPME sonuçları ile karşılaştırılmıştır. HS-SPME yönteminin yağ gülünde uçucu bileşenleri analizinde oldukça hassas ve etkili olduğu anlaşılmış, bir yağ gülü çiçeğinin farklı kısımların farklı koku bileşenlerine sahip olduğu belirlenmiştir. Ayrıca su distilasyonu ile elde edilen gül yağının uçucu yağ bileşenlerinin çiçeğin doğal koku bileşenlerinden farklı olduğu ve distilasyon sürecinde önemli bazı bileşenlerde değişimler ve kayıplar olduğu tespit edilmiştir. Taze gül çiçeğinin en önemli bileşeni olan feniletil alkol çiçeğin en fazla pembe renkli petallerinde (taç yapraklarında, gül yağında varlığı istenmeyen metil öjenol ise çiçeğin en fazla stamenlerinde (erkek organlarında bulunduğu belirlenmiştir.

  13. Fing Art fair (c)eld in september

    Institute of Scientific and Technical Information of China (English)

    Guo Yan

    2011-01-01

    The Art Beijing 2011 · Fine Art Fair was held at the National Agricultural Exhibition Center in Beijing from September 15 to 18,2011.Bringing together over 40 galleries and art institutions,this year's Fine Art Beijing offers a strong lineup.It presented an extraordinary exhibition of both classical and modem art from West and East.Compared with previous fairs,the exhibits at the Fine Art Beijing 2011 are richer in form and more diversified in style.Attending the fair,you would be able to travel from the ancient pastto the contemporary art world,enjoying classical Western paintings,modem Chinese paintings,modem and contemporary oil paintings,Japanese paintings,and Russian oil paintings,all of which havehad an enormous impact on contemporary Chinese art.

  14. Gıdaların ve Biyolojik Maddelerin Süperkritik Akışkanlarla İşlenmesi: II. Kristalizasyon, Ekstrüzyon, Mikrobiyal İnaktivasyon

    OpenAIRE

    Yener, Meryem Esra

    2001-01-01

    Gıdaların ve biyolojik maddelerin süperkritik akışkanlar ile işlenmesi, fonksiyonel ve yüksek değerli ürünler elde edilmesi için önem­li bir araçtır. Ekstraksiyon, fraksiyonasyon ve reaksiyonun yanı sıra, kristalizasyon ve ekstrüzyon ile değerli ürünler elde edilebilmekte, mikrobiyal inaktivasyon yapılabilmektedir. Bu derleme, son gelişmeleri, potansiyel uygulamaları ve araştırma gereksinimlerini içermektedir.  

  15. Düsük Kalorili Konya Linyitlerinin Azotlu Gübre Olarak Kullanılması

    OpenAIRE

    Hüseyin DEVECİ; KURBANLI, Refika

    2009-01-01

    Bu çalısmada, Türkiye'nin genç linyitlerinden olan Konya çevresindeki düsük kalori degerli Beysehir, Ilgın ve Ermenek linyitlerinin hümik asit (HA) ve azot içerikleri belirlenmistir. Linyitlerden maksimum azot içerikli organo-mineral gübre elde edilmesi için optimum deney sartları tespit edilmistir. Linyit ve HA'lerden elde edilen organo-mineral gübrelerin sera sartlarında uygulanabilirligi arastırılmıs ve tarımda kullanılabilecegi sonucuna varılmıstır.

  16. Düsük Kalorili Konya Linyitlerinin Azotlu Gübre Olarak Kullanılması

    Directory of Open Access Journals (Sweden)

    Hüseyin DEVECİ

    2009-04-01

    Full Text Available Bu çalısmada, Türkiye'nin genç linyitlerinden olan Konya çevresindeki düsük kalori degerli Beysehir, Ilgın ve Ermenek linyitlerinin hümik asit (HA ve azot içerikleri belirlenmistir. Linyitlerden maksimum azot içerikli organo-mineral gübre elde edilmesi için optimum deney sartları tespit edilmistir. Linyit ve HA'lerden elde edilen organo-mineral gübrelerin sera sartlarında uygulanabilirligi arastırılmıs ve tarımda kullanılabilecegi sonucuna varılmıstır.

  17. Dolgu Maddelerinin Dentin ve Pulpa Dokularına Etkilerinin İncelenmesinde Dikkat Edilmesi Gereken Esaslar

    OpenAIRE

    ÜÇOK, Mete

    2013-01-01

    ÖZETBu makalede, bir dolgu maddesinin dentin ve pulpaya etkilerinin incelenmesinde etkili olabilecek faktörler üzerinde duruldu. Bu faktörler incelenen hastaların yaşı, inceleme yapılan dişlerin durumu, kavitelerin açılma şekli ve özellikleri, kavite tabanı ile pulpa arasında kalan dentin kalınlığı, dolgu maddesinin seçimi ve uygulanması, inceleme süresi ve histolojik kesitlerin alınmasıdır. Sonuç olarak bu faktörlerin etkilerinin en alt düzeye indirilmesi halinde, gerçeğe en uygun bulguların...

  18. Hisse Senedi Piyasasında Teknik Analiz Yönteminin Güvenilirliğinin Test Edilmesi

    OpenAIRE

    Akça, Önder

    2005-01-01

    Çalışmada teknik analiz yöntemiyle hisse senedi getirilerinin analizi teorik olarak incelenmiş ve konular İMKB uygulamaları ile açıklanmaya çalışılmıştır. Teknik analizin tanımı,doğuşu, tarihsel gelişimi, temel prensipleri ve varsayımları açıklanmıştır. Teknik analiz yönteminde kullanımı, anlaşılabilirliği kolay, en çok kullanılan ve bilinen teknik analiz araç ve yöntemleri açıklanmış, İMKB uygulamaları ile konu incelenmiştir. Çalışmada farklı yöntemler ve uygulamalar ile oluşturulan sisteml...

  19. The validity and reliability of motivational factors scale and the benefits scale of participating in trekking activities for Turkish populationBireyleri doğa yürüyüşü yapmaya motive eden faktörler ölçeği ve bu faaliyetlere katılarak elde edilen faydalar ölçeğinin Türk popülasyonu için geçerlilik güvenirlilik çalışması

    Directory of Open Access Journals (Sweden)

    Faik Ardahan

    2013-09-01

    Full Text Available There are two main aims of this study; first; define the validity and reliability of “the Motivational Factors Scale for participating in recreational Trekking activities -MFST”; and “the Benefits Scale of participating in Trekking activities - BST”; second; find out the impacts of MFST on BST.As a result, the Motivational Factors Scale for participating recreational Trekking activities, the Benefits Scale of participating in Trekking activities were reliable and valid in the estimation of the motivational factors and benefits of participating in trekking for the Turkish population. ÖzetBu çalışmanın iki temel amacı vardır, ilki; bireyleri “Doğa Yürüyüşü Yapmaya Motive Eden Faktörler Ölçeği-MFST” ve bu faaliyetlere katılarak “Elde Edilen Faydalar Ölçeğinin- BST” Türk popülasyonu için geçerlilik güvenirlilik çalışması yapmak, ikincisi de, MFST ile BST arasındaki ilişkiyi gösterir regresyon modelinin ortaya konulmasıdır. Araştırma tanımlayıcı bir araştırmadır ve bu çalışma sadece doğa yürüyüşçüleri ile sınırlıdır.Araştırma sonucuna göre, MFST’nin bireyi doğa yürüyüşü etkinliklerine motive eden faktörlerin açıklanmasında, BST’nin de bireylerin doğa yürüyüşünden elde ettikleri faydaların açıklanmasında Türk popülasyonu için yeterli oldukları sonucuna varılmıştır.    Neden-Sonuç ilişkisi açısından, Nedenlerin Faydalar üzerine etkileri de araştırmanın temel yapılma gerekçesini açıklamaktadır.

  20. Ürün Kategorileri Arasındaki Satış İlişkisinin Birliktelik Kuralları ve Kümeleme Analizi ile Belirlenmesi ve Perakende Sektöründe Bir Uygulama

    OpenAIRE

    Ergün, Ertuğrul

    2008-01-01

    Günümüzde birçok işletme, müşterileri ile ilgili çok miktarda ve çok çeşitli veriye sahiptir. Bu verilerin çeşitli analiz teknikleriyle işlenerek anlamlı ve işletmenin işine yarayacak bilgilerin elde edilmesi, işletmenin daha etkin kararlar vermesini sağlayacak ve küreselleşen, rekabetin arttığı dünyada işletmenin rekabet etme gücünü arttıracaktır. Veri madenciliği, matematiksel ve istatistiksel teknikler yardımı ile veri seti içindeki gizli bağlantıları tespit ederek, işletmelere karar verme...

  1. Çeşitli kalsiyum boratların sentezi, karakterizasyonu ve alev geciktirici etkinliklerinin incelenmesi

    OpenAIRE

    DURĞUN, Zeynep Gülşah

    2010-01-01


      Türkiye sahip olduğu bor rezervleri ve cevherlerinin kalitesi ile dünyanın önde gelen ülkelerinden biri olmasına rağmen minerallerin çeşitliliği ve işlenebilirliği yetersizdir. Bu nedenle değişik endüstriyel uygulamalara yönelik sentetik bor bileşiklerinin elde edilmesi önemli bir ihtiyaçtır. Bilinen yaklaşık 230 çeşit bor bileşiği mevcuttur ve bir kalsiyum hekzaborat türevi olan Nobleit de bunlardan bir tanesidir. Yangınlarda can ve mal kaybın...

  2. KOJENERASYON VE KEMERBURGAZ ÇÖP ARITMA TESİSİNDEKİ UYGULAMASI

    OpenAIRE

    ÇALLI, İSMAİL; BALA, HACI

    2002-01-01

    Bu makalede, kojenerasyoo (birleşik ısı- güç) sistemleri, kullanılan yakıt türleri ve bu yakıtlardan biri olan Landfill gazın kojenerasyonda yakılarak elektrik ve ısı elde edilmesi konuları ele alınmıştır. Bununla birlikte bu yöntemin uygulamalarından biri olan Kemerburgaz Çöp Arıtma Tesisi hakkında ve bu tesiste atık ısımn kullanılabilirliği ile ilgili değerlendirmeler de yer almaktadır

  3. KOJENERASYON VE KEMERBURGAZ ÇÖP ARITMA TESİSİNDEKİ UYGULAMASI

    Directory of Open Access Journals (Sweden)

    İSMAİL ÇALLI

    2002-09-01

    Full Text Available Bu makalede, kojenerasyoo (birleşik ısı- güç sistemleri, kullanılan yakıt türleri ve bu yakıtlardan biri olan Landfill gazın kojenerasyonda yakılarak elektrik ve ısı elde edilmesi konuları ele alınmıştır. Bununla birlikte bu yöntemin uygulamalarından biri olan Kemerburgaz Çöp Arıtma Tesisi hakkında ve bu tesiste atık ısımn kullanılabilirliği ile ilgili değerlendirmeler de yer almaktadır

  4. Mikrokalorimetrinin Hububat Teknolojisinde Kullanım İmkanları I. Differential Scanning Calorimetry (DSC) ve Yöntemin Genel Karakteristikleri

    OpenAIRE

    Certel, Muharrem; Ertugay, Zeki

    1991-01-01

    Hububat teknolojisinde, özellikle hububat ve ürünlerinden kalite kontrollerinde, basit ve hızlı bir ölçüm tekniği ile elde edilen sonuçların çok yönlülüğü nedeniyle, mikrokalorimetri günden güne artan bir önem arz etmektedir. Differential Scanning Calorimetry (DSC), gıdalardaki karbonhidrat, protein ve yağ komponentlerinin fonksiyonel özelliklerinin karakterize edilmesi ve bunların gıda teknolojisinde, özellikle de gıda işlem mühendisliğinde amaca yönelik olarak kullanımına imkan tanıyacak gü...

  5. Localized strain field measurement on laminography data with mechanical regularization

    OpenAIRE

    Taillandier-Thomas, Thibault; Roux, Stéphane; Morgeneyer, Thilo F.; Hild, François

    2014-01-01

    For an in-depth understanding of the failure of structural materials the study of deformation mechanisms in the material bulk is fundamental. In situ synchrotron computed laminography provides 3D images of sheet samples and digital volume correlation yields the displacement and strain fields between each step of experimental loading by using the natural contrast of the material. Difficulties arise from the lack of data, which is intrinsic to laminography and leads to several artifacts, and th...

  6. Groundwater Dynamics in Drained Soils of the Biđ-fi eld District

    Directory of Open Access Journals (Sweden)

    Ivan Mustać

    2011-03-01

    Full Text Available The main goal of five-year stationary investigations (2001-2006 was to assess groundwater dynamics in the Biđ-field district, as well as the type of soil moistening of agricultural soils spreading over 5838 ha. Detailed hydropedological investigations were carried out in 2000 and a soil map of the region was produced (scale = 1:10000 using universal kriging. Soil investigations identified six pedosystematic units: alluvial-gley, semigley-pseudogley, eugley hypogley, humogley, eugley amphigley and drained soils. Based on permanent monitoring of piezometer groundwater (piezometer depth up to 4.0 m in the period from 2001 to 2006, the following major soil moistening types and subtypes of the separated soil units were determined: semigley-pseudogely, hypogley, humogley, amphigley and drained. Using the correlation method, more intensive groundwater communication was determined in the studied soil profiles with the River Biđ water (r = 0.65-0.69 than with the River Sava water (r = 0.23-0.69, notably in hypogley soils, which cover 54.3% of the studied area. Analysis of the obtained piezometer water level curves indicated a very strong mutual correlation between the groundwater level dynamics in monitored hydrogeological piezometers of 9 m depth (r = 0.87-0.98, as well as a strong correlation (r = 0.75-0.94 between hydrogeological and hydropedological piezometers of 4 m depth. A particularly strong correlation (r = 0.85-0.94 was recorded between hydrogeological and hydropedological piezometers installed in hypogley soil. These data confirm marked vertical communication of groundwater in the deep aquifer with water of the shallow soil aquifer, indicating that the surface layer of the studied area, mainly made up of silty clay loams to silty clays, is not impervious.

  7. Groundwater Dynamics in Drained Soils of the Biđ-fi eld District

    OpenAIRE

    Ivan Mustać; Dragutin Petošić; Goran Gjetvaj; Vilim Filipović

    2011-01-01

    The main goal of five-year stationary investigations (2001-2006) was to assess groundwater dynamics in the Biđ-field district, as well as the type of soil moistening of agricultural soils spreading over 5838 ha. Detailed hydropedological investigations were carried out in 2000 and a soil map of the region was produced (scale = 1:10000) using universal kriging. Soil investigations identified six pedosystematic units: alluvial-gley, semigley-pseudogley, eugley hypogley, humogley, eugley amphigl...

  8. Quantum field theory of photons with orbital angular momentum

    OpenAIRE

    Fernández Calvo, Gabriel; Picón Álvarez, Antonio; Bagán Capella, Emili

    2006-01-01

    A quantum-field-theory approach is put forward to generalize the concept of classical spatial light beams carrying orbital angular momentum to the single-photon level. This quantization framework is carried out both in the paraxial and nonparaxial regimes. Upon extension to the optical phase space, closed-form expressions are found for a photon Wigner representation describing transformations on the orbital Poincaré sphere of unitarily related families of paraxial spatial modes.

  9. Carbon nanotube based field emitters in diode operating mode

    OpenAIRE

    Wenger, Daniela

    2015-01-01

    Im Rahmen des BMBF-Projektes CarboFEM wurde die Feldemission (FE) von Kohlenstoff-Nanoröhrchen (CNTs) und CNT/Graphen-Hybridstrukturen untersucht. Ziel des Projektes war es, eine Röntgenröhre mit einer Feldemitterkathode als Elektronenquelle zu bauen. In der vorliegenden Arbeit werden das Emittermaterial, die Vakuumdiode und die gemessene Feldemission sowie Einflussgrößen darauf beschrieben. Aufgrund ihrer nm-feinen Strukturen wurden CVD-gefertigte CNTs sowie eine lösungsprozessierte Dispersi...

  10. A comparative study of eld emission properties of Cu, Cr, and CrN

    CERN Document Server

    Muranaka, T; Leifer, K; Ziemann, V

    2012-01-01

    We investigated the field emission properties of Cu, Cr, and CrN by using the field emission measurement setup inside a scanning electron microscope at the Angstrom laboratory in Uppsala University, from 11th to 13th January 2012.

  11. Synthesis of studies on common ELD storage containers for the MA-VL wastes

    International Nuclear Information System (INIS)

    The aim of this document is to present the results of different studies realized on the common container during long time storage and during the deep underground disposal. These studies are realized in the framework of the 2 and 3 axis of the law on the radioactive wastes management of 1991. The common container is the external envelop collecting many primary wastes packages. The results are presented in eight chapters: the initial data, the main functions of the container, the based options for the sizing, the constitutive concrete, the functional demonstrations, the technological demonstrations, the old packages examinations, the transport analysis. (A.L.B.)

  12. ANALYSIS OF THE DETERMINANTS OF EXPORTING INTENSITY IN THE FI ELD OF INNOVATION

    Directory of Open Access Journals (Sweden)

    Suárez-Porto, Vanessa

    2014-05-01

    Full Text Available From a sample of Spanish manufacturing businesses, extracted from the 2005 Technological InnovationPanel (PITEC 2005, we suggest a lineal regression model in which we relate the exporting intensity withthe product innovation, the process innovation, the sectorial technological intensity, the business extentand the membership to a pool of businesses. In the descriptive and statistical analysis, we obtained thatall of these variables have a positive and significant influence on the exporting intensity. Regarding thismatter, we have checked that the main influence corresponds to businesses that develop product inno-vation strategies, are of medium extent, are assigned to sectors of medium-high technological intensityand belong to a foreign corporate group.

  13. Properties of unipolar magnetic field pulse trains generated by lightning discharges

    Czech Academy of Sciences Publication Activity Database

    Kolmašová, Ivana; Santolík, Ondřej

    2013-01-01

    Roč. 40, č. 8 (2013), 1637–1641. ISSN 0094-8276 R&D Projects: GA ČR GA205/09/1253 Grant ostatní: Rada Programu interní podpory projektů mezinárodní spolupráce AV ČR(CZ) M100421206 Institutional support: RVO:68378289 Keywords : train of pulses * dart-stepped leader * K change Subject RIV: BL - Plasma and Gas Discharge Physics Impact factor: 4.456, year: 2013 http://onlinelibrary.wiley.com/doi/10.1002/grl.50366/abstract

  14. Infrasound pulses from lightning and electrostatic field changes: Observation and discussion

    Czech Academy of Sciences Publication Activity Database

    Chum, Jaroslav; Diendorfer, G.; Šindelářová, Tereza; Baše, Jiří; Hruška, František

    2013-01-01

    Roč. 118, č. 19 (2013), s. 10653-10664. ISSN 2169-897X R&D Projects: GA ČR GA205/09/1253; GA ČR(CZ) GAP209/12/2440; GA MŠk 7E12020 Grant ostatní: RF EU(XE) ARISE 284387 Institutional support: RVO:68378289 Keywords : Infrasound * Lightning * Thunder * Slowness method * Electrostatic mechanism Subject RIV: BL - Plasma and Gas Discharge Physics Impact factor: 3.440, year: 2013 http://onlinelibrary.wiley.com/doi/10.1002/jgrd.50805/abstract

  15. RÜZGAR TÜRBİNLERİ İLE ENERJİ ELDE EDİLMESİ

    OpenAIRE

    GÜVEN, H. RIZA; ÖZARSLAN, İSMAİL

    2004-01-01

    Ulkemizde ve dünyada hızla artan enerji ihtiyacı karşısında mevcut tükenir enerji kaynaklarındaki azalma ve bazı kaynaklann yol açtığı çevresel sorunlar yeni ve yenilenebilir enerji kaynaklarını gündeme getirmiştir. Dünyada konvensiyonel kaynaklardan elektrik üretiminin yarattığı çevre sorunları nedeniyle artan hassasiyet, bu sorunların en aza indirilınesi için uygulanan teknolojiterin getirdiği maliyetler ve kullanılan kaynakların yenilenemez oluşu, çevre dostu sıfır yakıt maliyetli olan yen...

  16. New archaeointensity data from Italy and geomagnetic field intensity variation in the Italian Peninsula

    OpenAIRE

    Tema, Evdokia; Morales, Juan; Goguitchaishvili, Avto; Camps, Pierre

    2013-01-01

    We present new archaeointensity results from three Italian kilns situated at Ascoli Satriano, Vagnari and Fontanetto Po obtained with the Thellier modified by Coe double heating method. These data complement the directional results previously published. All sites are dated on the basis of archaeological information and/or thermoluminescence dating. The results are corrected for the anisotropy of the thermoremanent magnetization and the cooling rate effects. The new data are com...

  17. A verification of quantum field theory – measurement of Casimir force

    Indian Academy of Sciences (India)

    Anushree Roy; U Mohideen

    2001-02-01

    Here we review our work on measurement of the Casimir force between a large aluminum coated a sphere and flat plate using an atomic force microscope. The average statistical precision is 1% of the force measured at the closest separation. We have also shown nontrival boundary dependence of the Casimir force.

  18. Ekonomik Bir Nükleer İz Kazıma Ünitesinin Üretilmesi ve Performansının Test Edilmesi

    Directory of Open Access Journals (Sweden)

    Vahap KARAKILIÇ

    2014-03-01

    Full Text Available Since the inhalation of radon and radon progenies may cause serious health risks such as increase in the incidence of lung cancer, it is important to determine indoor radon concentrations. In the present study, the performance of the etching unit (track-matic, an automatic bath processing appliance for CR-39 nuclear track detectors that we designed as an alternative to conventional Radobath etching unit, was examined. Indoor radon measurements were performed for a 6-weeks period by using CR-39 detectors, which were placed in 10 measurement points in couples at the Süleyman Demirel University campus. At the end of the measurement period the CR-39 detectors were collected and the counting process of alpha traces (recorded by the detectors were fulfilled in the Health Physics Laboratory of Sarayköy Nuclear Research and Training Center (SANAEM in Ankara. At the stage of making the recorded alpha traces visible, for all the detector couples obtained from the measurement points, the film processing of one detector was performed by using the conventional Radobath etching unit in SANAEM laboratory and the bath process of the other CR-39 detector was performed by our device. Then the results of the analyses were compared to each other. Within the limitations of this study it may be concluded that, the track-matic device that we developed, which is approximately 65 times more economical than the current film processing unit Radobath, can be used for chemical etching process of CR-39 detectors

  19. Kutsal Değerlerin Siyasete Alet Edilmesi Bağlamında Abdullah b. Ali İsyanı

    OpenAIRE

    Güneş, Hüseyin

    2012-01-01

    Abdullah b. Ali had benefited on creation of the Abbasid state especially has attracted attention on him to defeat the last Umayyad caliph Marwan b. Muhammad in the battle of Zap and by his activities in the process of elimination the Umayyad house. Due to the success of the job was rewarded with the governorship of Damascus and in this process received pledges of hereditary from Abu’l-Abbas, the first caliph of the Abbasid state. But when, Abu Jafar al-Mansur emerged as the second caliph he ...

  20. Kırılgan Beşlide Satın Alma Gücü Paritesi (SAGP) Hipotezinin Test Edilmesi

    OpenAIRE

    CEVIS, Ismail; Resat CEYLAN

    2015-01-01

    Due to price stability has been a privileged macro-economic target, the validity of purchasing power parity (PPP) hypothesis attracted more attentions in recent studies. The aim of this study is to examine the validity of purchasing power parity hypothesis for emerging markets (India, Brazil, Indonesia, Turkey, and South Africa) which are called “fragile five” by using the method of co-integration in the the period of 2003:12013:8. Then, the data covers monthly series of nominal exchange rate...

  1. Effect of VATS Wedge Resection and Mediastinal Lymph Node Sampling 
in Eldly Patients with Early Peripheral Lung Cancer

    Directory of Open Access Journals (Sweden)

    Weihua LOU

    2012-01-01

    Full Text Available Background and objective The treatment for early-stage non-small cell lung cancer is primarily surgical. However, the optimal extent of mediastinal lymph node resection remains to be determined. The aim of the current study is to investigate the effect of a pulmonary wedge resection on aged patients with lung cancer. Methods A total of 15 lung cancer patients aged over 70 years were treated via video-assisted thoracoscopic surgery (VATS wedge resection and mediastinal lymph node sampling from June 2004 to February 2008. Mediastinal lymph node sampling included stations 2R, 4R, 8 and 9 for the right-sided cancers and stations 5, 6, 8 and 9 for the left-sided cancers. Results VATS wedge resection and mediastinal lymph node sampling for aged patients with peripheral lung cancer are minimally invasive treatments with a short operative time and low postoperative morbidity. The 1-year and 3-year survival rates were 100% and 86.6%, respectively. Conclusion VATS wedge resection and mediastinal lymph node sampling can be an alternative treatment for aged patients with early peripheral lung cancer.

  2. A case of polypharmacy in the eldly%老年人多重用药1例讨论

    Institute of Scientific and Technical Information of China (English)

    王秋梅; 张波; 刘晓红

    2011-01-01

    @@ 多重用药是指患者同时使用多种药物(通常≥5种药物),一种疾病采用复方用药或混杂给药.这里以一个典型病例,讨论如何进行老年人多重用药的管理. 1病历资料 患者男,87岁,因"意识不清2h"于2009年8月入院.诊治经过:CT提示右侧小脑出血约13mL,第四脑室受压变形.

  3. From Wasted Land to Megawatts: How to Convert Brownfi elds Into Solar Power Plants (the Case of the Czech Republic)

    Czech Academy of Sciences Publication Activity Database

    Klusáček, Petr; Havlíček, M.; Dvořák, Petr; Kunc, Josef; Martinát, Stanislav; Petr, T.

    2014-01-01

    Roč. 62, č. 3 (2014), s. 517-528. ISSN 1211-8516 R&D Projects: GA TA ČR(CZ) TD020259 Institutional support: RVO:68145535 Keywords : brownfields * solar energy * regeneration Subject RIV: DE - Earth Magnetism, Geodesy, Geography http://dx.doi.org/10.11118/actaun201462030517

  4. Coupled Higgs field equation and Hamiltonian amplitude equation: Lie classical approach and (′/)-expansion method

    Indian Academy of Sciences (India)

    Sachin Kumar; K Singh; R K Gupta

    2012-07-01

    In this paper, coupled Higgs field equation are studied using the Lie classical method. Symmetry reductions and exact solutions are reported for Higgs equation and Hamiltonian amplitude equation. We also establish the travelling wave solutions involving parameters of the coupled Higgs equation and Hamiltonian amplitude equation using (′/)-expansion methodc, where = () satisfies a second-order linear ordinary differential equation (ODE). The travelling wave solutions expressed by hyperbolic, trigonometric and the rational functions are obtained.

  5. Atık Azaltma Metotlarının Akü Üretimine Entegre Edilmesi: Metot Geliştirme Ve Uygulama / Integration of Waste Reduction and Battery Production: Method Development and Application

    Directory of Open Access Journals (Sweden)

    Sibel Uludağ Demirer

    2012-12-01

    Full Text Available Bu çalışma çevre yönetimi ile entegre edilmiş üretim sistemlerinin önemli çevresel ve ekonomik faydalar getireceği düşüncesini baz alarak üretim sistemine yeni bir yaklaşım önermeyi amaçlamıştır. Bu yaklaşım için izlenmesi gereken yol genel olarak belirlenmiş ve çevreye dost ve az madde kullanarak çok üretme felsefesinin karar verme mekanizmalarına taşınması gerektiği vurgulanmıştır. Bu yaklaşım üretim sisteminde var olan uygulamaları fark eder ve alternatif atık yönetimi çözümlerini de araştırarak en çok faydayı sağlayan çözümü bulmaya çalışır. Hazırlanan metodolojide veri toplama ve üretim sisteminin analizi atıkların oluşumu ve azaltma alternatifleri göz önünde tutularak yapılır. Atıkların yönetimine ilişkin alternatifler araştırıldıktan sonra kazanımlar karar verme aşamasına iletilir. Önerilen metodolojinin akü üretimi yapan bir fabrikada uygulaması belli bir aşamaya kadar yapılmış ve fabrika yöneticilerine sonuçlar hakkında bilgi verilmiştir. Integration of Waste Reduction and Battery Production: Method Development and Application This study presents an environmentally integrated manufacturing system analysis for companies looking for the benefits of environmental management in achieving high efficiency levels. The roadmap for such a management system is established and it is shown that the decision making should consider producing more using less and nonhazardous. This approach recognizes the already existing activities while investigating alternative waste management solutions. The methodology consists of data collection, operational analyses of the processes, identification of wastes and evaluation of waste reduction alternatives proposed both technically and economically. The proposed methodology is examined in a car battery manufacturing company and results are reported to the decision makers.

  6. Hindiba (Cichorium intybus L.) Bitkisinden Myrosinaz Enziminin Saflaştırılması, Karakterize Edilmesi ve Kozmetik Alanında Kullanılabilirliğinin İncelenmesi

    OpenAIRE

    DEMİR, Nazan; Esen TAŞGIN

    2014-01-01

    Myrosinaz glukosinolatların hidrolizinden sorumlu bir enzimdir (E.C: 3.2.3.2 β-thioglucosidase, β-thioglucoside glucohydrolase olarak da bilinir). Kanserle mücadele için umut verici bileşikler olarak kabul edilen sinigrin, glukoraphanin (GRA) ve glukoraphenin (GRE) gibi ara yıkım ürünlerinden dolayı bazı alifatik glukosinolatlar oldukça ilgi çekmiş ve myrosinaz enziminin bu tümör küçültücü etkisi son yıllarda önem kazanmıştır. Bu çalışmada, myrosinaz amonyum sülfat çöktürmesi, Q...

  7. Forecasting Daily and Sessional Returns of the ISE-100 Index with Neural Network Models = Yapay Sinir Ağları Modelleri ile İMKB-100 Endeksinin Günlük ve Seanslık Getirilerinin Tahmin Edilmesi

    Directory of Open Access Journals (Sweden)

    Emin AVCI

    2007-06-01

    Full Text Available Especially for the last decade, the neural network models have been applied to solve financial problems like portfolio construction and stock market forecasting. Among the alternative neural network models, the multilayer perceptron models are expected to be effective and widely applied in financial forecasting. This study examines the forecasting power multilayer perceptron models for daily and sessional returns of ISE-100 index. The findings imply that the multilayer perceptron models presented promising performance in forecasting the ISE-100 index returns. However, further emphasis should be placed on different input variables and model architectures in order to improve the forecasting performances.

  8. Ücret Yapışkanlığı Hipotezi'nin Test Edilmesi: Türkiye'de Asgari Ücret ve Büyüme Üzerine Zaman Serileri Analizi (2005-2012)

    OpenAIRE

    KARGI, Bilal

    2013-01-01

    Classical economics envisaged to reach the subsistence level of wages in the long term. Keynes, however, argued that it would be sticky downward wages with trade union activities. Since the 1930s, governments have begun to phase out the laws of the minimum wage to support employees' income levels. Thus, the minimum wage has emerged as a wage stickiness. Although wages are rising long-term interest rates are still low production continue to receive. Economistic analysis suggests that the wages...

  9. Halka Açık Olmayan Şirketlerde Sistematik Risk Ölçütü Beta Katsayısının Tahmin Edilmesi(Forecasting Systematic Risk Measure Beta Coefficient For Private Companies

    Directory of Open Access Journals (Sweden)

    Mustafa KIRLI

    2006-01-01

    Full Text Available Systematic risk being insensitive to portfolio diversification affects all financial markets and all financial assets operated in these markets.Systematic risk measure beta coefficient shows the sensitivity of the securities’ returns to variations in the market return.Beta coefficient is forecasted by using regression model.For publicly traded firms, we know the historical market datas,thus there is no difficulty for estimating beta coefficients of these firms.On the other hand,private companies do not have a market price history.Consequently there are difficulties for estimating beta coefficients of private companies.In this study,to forecast beta coefficients for private firms,three models or approaches are suggested and with details analysed.These models or approaches are accounting betas,fundamental betas and comparable publicly traded firms betas.

  10. Maliyet Liderliği Stratejisi Kapsamında Değer Mühendisliği Tekniğinin Uygulanmasının Bir Model Vasıtasıyla Analiz Edilmesi

    OpenAIRE

    Altan AYAN

    2013-01-01

    In this study conducted, firstly, cost leadership strategy is examined. Then, in the second section, value engineering technique is explained in extensive detail. In the third section, the implementation of value engineering technique in company production process examined through a model under the cost leadership strategy. Thus, value engineering technique is seen appropriate and advantageous for cost leader company. In addition to, the cost leader company can be more effective and competiti...

  11. Gelişmekte Olan Piyasalarda Finansal Piyasa İstikrarının Kantil Regresyon Yöntemiyle Test Edilmesi = Tests for Financial Market Stability in Emerging Markets by Using Quantile Regression

    OpenAIRE

    Akar, Cüneyt

    2013-01-01

    In this study, the financial market stability is investigated for the emerging market countries of Morgan Stanley Capital International (MSCI), Europe, the Middle East and Africa index by using quantile regression based new empirical test proposed by Baur and Schulze (2009). The daily logarithmic return dataset covers the period of June 1, 2002 to February 17, 2011. The results show that Poland and Morocco exhibit financial market stability among the investigated countries.

  12. Asude Bahar Ülkesine Yolculuk Olan Ölümün Şair Biyografilerinde İfade Edilmesi In Poet Biographies Expression Of Death A Passage To The Peaceful Spring Country

    Directory of Open Access Journals (Sweden)

    Abdullah AYDIN

    2013-09-01

    Full Text Available Collection of biographies of poets the sources of Classic TurkishLiterature inform about the poets’ life, character, literal personality andworks. Though the number of collection of biographies in TurkishLiterature has risen to forty, it will increase in number by newresearches possibly. There are both books and articles about how somespecific subjects are held on these works that involve the biographies ofpoets. Along with the informations about the poet’s character, physicalappearance, family, educational background, job, marriage, children,date of birth, place of birth, place of death there are information abouthis poesy.In this study, how the death of the poets are expressed isresearched inspring especially from the writers’ acting responsiblytowards indicating the date of death. The distinctness is formed byexamining former published works and identifying the samples whichwill complete them. Apart from the cause and time of death the wordsand word groups preferred for death knell are examined in terms ofstyle. While the death of poets are expressed by some simple sentencesas “died, expired, slaughtered” sometimes it is expressed in moreartistic ways related to poet’s name, nickname, job and lifestyle.Especially the tenth topic with its under titles is important in terms ofrevealing new styles of expression.Death which we regard ordinary by saying “all livings born, liveand die” and which is expressed in wholy Koran as “Külli nefsinzâikatü'l-mevt”, namely “every soul shall have a taste of death” is holdsometimes sadly but mostly in terms of its beauty. The writers havedeveloped a literary pleasure on death. Klasik Türk Edebiyatının kaynak eserlerinden Şair Tezkireleri şairlerin hayatı, mizacı, edebî kişiliği ve eserleri hakkında bilgi vermektedir. Türk Edebiyatında tezkire sayısı kırka ulaşmış olmakla beraber yeni araştırmalarla bu sayının artması muhtemeldir. Şair biyografilerini kapsayan bu eserlerde hangi konuların nasıl anlatıldığı üzerine hem kitap hem de makale çalışmaları yapılmıştır. Bu eserlerde şairin karakteri, fizikî görünümü, ailesi, öğrenim durumu, mesleği, evliliği, çocukları, doğumu, doğum yeri, ölümü gibi bilgilerin yanında şairlikleriyle ilgili bilgiler de yer almaktadır.Bu makalede, biyografi yazarlarının özellikle vefat tarihlerini belirtmekte titiz davranmalarından hareketle şairlerin ölümünün hangi tarzlarda ifade edildiği üzerine araştırma yapıldı. Bu konuda daha önce yayımlanan çalışmalar incelenerek onları tamamlayacak örneklerin tespit edilmesiyle bir farklılık oluşturuldu. Ölüm şekli ve zamanından ziyade vefat haberinin verilmesinde tercih edilen kelime ve kelime grupları üslup özelliği bakımından incelendi. Şair ölümleri “Öldü, fevt oldu, katledildi.” gibi basit cümlelerle ifade edilirken bazen de şairin ismi, mahlası, mesleği ve hayat tarzıyla bağlantılı bir şekilde daha sanatkârane işlenmektedir. Özellikle onuncu madde, alt başlıklarıyla beraber yeni ifade şekillerini ortaya koyması bakımından önemlidir.“Her canlı doğar, yaşar, ölür.” diye sıradanlaştırdığımız, kutsal kitabımız Kur’an’ın ise “Külli nefsin zâikatü'l-mevt”, yani “Her nefis ölümü tadacaktır.” şeklinde ifade ettiği ölüm, tezkire yazarlarımız tarafından bazen acı çoğu zaman güzel yönleriyle ele alınmıştır. Yazarlar ölüme dair edebî bir zevk geliştirmişlerdir.

  13. TARIMSAL YAPILARDA ÖĞÜTÜLMÜŞ HAFİF AGREGANIN KULLANILABİLME OLANAKLARI ÜZERİNE BİR ARAŞTIRMA

    OpenAIRE

    ÖRÜNG, İbrahim

    2014-01-01

    ÖZET : Bu araştırmada, öğütülmüş hafif agreganın bağlayıcılık (puzzolanik) özelliğinden yararlanarak daha düşük maliyetli yapı malzemelerinin elde edilmesi olanakları araştırılmıştır. Bu amaçla belirli bir inceliğe kadar kolayca öğütülebilen hafif agreganın belirli oranlarda çimento, kireç ve normal ince agrega ile birlikte kullanılmasıyla üretilen hafif blokların önemli fiziksel ve mekanik  özellikleri incelenmiştir.                  Araştırmada, öğütülmüş hafif agreganın bağlayıcılık özelli...

  14. Cloning and expression of HSF1 cDNA from Hainan Eld's deer%海南坡鹿HSF1cDNA的克隆与表达

    Institute of Scientific and Technical Information of China (English)

    成鹰; 林杰材; 满初日嘎; 杜丽; 王凤阳; 刘涛; 李治深; 许世英; 符运南; 林贤梅; 吴科榜

    2009-01-01

    采用RT-PCR和RACE方法扩增海南坡鹿热休克转录调节因子1(Heat shock transcription factor 1,HSF1)cDNA全长,将扩增产物与pMD20-T载体连接,重组质粒经PCR、酶切鉴定后测序并进行生物信息学分析;构建pET28a-hdHSF1表达载体,经IPTG诱导表达后,进行SDS-PAGE和Western blot分析.结果显示,海南坡鹿HSF1cDNA全长为2 036 bp,含有1个1 578 bp的开放阅读框,编码525个氨基酸.经生物信息学分析,HSF1是一个等电点为4.93的亲水性蛋白.经IPTG诱导表达后,得到一个带组氨酸标签的约62 kD的融合蛋白,用抗His单克隆抗体进行Western blot,得到一条约62 kD特异性抗体结合带,表明海南坡鹿HSF1原核表达载体成功构建并表达.

  15. Typical interferences of ULF electricfi eld waveform data observed by DEMETER%DEMETER卫星观测的ULF电场波形干扰分析

    Institute of Scientific and Technical Information of China (English)

    欧阳新艳; 申旭辉

    2015-01-01

    This paper analyzes typical interferences of ULF waveform records based on ULF electric field waveform data observed by French DEMETER satellite. There are two kinds of typical interferences, regularly impulsive interference induced by calibration sequences and increased noise level during Burst mode. The time features of regular interferences show that regular interferences are observed every 4 minutes inside a mode and at the beginning of each Burst and Survey modes. Combined with VLF power spectra, we can confirm that this kind of interferences is caused by 625 Hz calibration signals. By obtaining ULF power spectra,it is found that the increased noise level of ULF waveform records during Burst mode is not generated by signals of single frequency or band. This type of ULF interferences does not much affect the analysis of real ULF disturbances in space. Understanding typical interferences of ULF electric field waveform data can provide references for future studies on the earthquake-related ULF disturbances based on ULF waveform data observed by DEMETER satellite and the interferences analysis of similar data recorded by China Seismo-electromagnetic Satellite (CSES).%分析由法国DEMETER卫星观测的ULF电场波形数据,发现两种典型干扰:由标定信号引起的脉冲式周期干扰及详查期间噪声水平增加.结果表明:①周期干扰特征表现为:在固定工作模式期间,干扰以约4 min周期出现;在详查和巡查模式开始时刻,干扰出现.结合VLF频段功率谱,可确认此干扰由625 Hz标定信号引起;②在详查模式期间噪声增加,获取ULF频段功率谱发现,此干扰并非来自单个频点或频段信号,对空间真实的ULF扰动分析影响不大.认识ULF电场波形数据的典型干扰特征,可为后续ULF电场扰动研究提供参考,为我国电磁监测试验卫星同类数据干扰分析提供借鉴.

  16. Breakup of 42 MeV 7Li projectiles in the fields of 12C and 197Au nuclei

    Indian Academy of Sciences (India)

    Dhruba Gupta; C Samanta; R Kanungo; P Basu; Subinit Roy; S Kailas; A Chatterjee; B J Roy; K Mahata; A Samant; A Shrivastava

    2001-07-01

    Inclusive cross sections of particles and tritons from the breakup of 42 MeV 7Li by 12C and 197Au targets are presented and analysed in the framework of the Serber model. Spectral distortions due to the targets and relevant reaction mechanisms are discussed.

  17. Relative efficiencies of the Burkard 7-Day, Rotorod and Burkard Personal samplers for Poaceae and Urticaceae pollen under field conditions

    DEFF Research Database (Denmark)

    Peel, Robert George; Kennedy, Roy; Smith, Matt;

    2014-01-01

    differences inter-sampler correction factors may be applied, however for many pollen samplers and pollen taxa such correction factors do not exist and cannot be derived from existing published work. Materials and methods: In this study the relative efficiencies of the Burkard 7-Day Recording Volumetric Spore...... collected during 2010 and 2011-12 respectively. Results: The three devices were found to record significantly different concentrations for both pollen taxa, with the exception of the 7-Day and Rotorod samplers for Poaceae pollen. Under the range of conditions present during the study wind speed was found to...

  18. Time-dependent restricted-active-space self-consistent eld theory: Formulation and application to laser-driven many-electron dynamics

    DEFF Research Database (Denmark)

    Miyagi, Haruhide; Madsen, Lars Bojer

    We have developed a new theoretical framework for time-dependent many-electron problems named time-dependent restricted-active-space self-consistent field (TD-RASSCF) theory. The theory generalizes the multicongurational time-dependent Hartree-Fock (MCTDHF) theory by truncating the expansion at a...... specific excitation level. In a numerical application to laser-driven electron dynamics of the one-dimensional beryllium atom, the TD-RASSCF method performs accurately while largely reducing the computational complexity compared to the MCTDHF method....

  19. RESEARCH ADVANCEMENT OF MICROEMULSIONS IN DRUG FlELD%微乳液在药物领域中的研究进展

    Institute of Scientific and Technical Information of China (English)

    刁兆玉; 李玲; 王仲妮

    2011-01-01

    In this paper, the structure and characteristics as drug carriers of microemulsion are described,and the recent progress on microemulsions as drug carders in different routes of administration have been reviewed and discussed. The broad prospects of research and development of microemulsions in the fields of drug have been expected.%作者介绍了微乳液的结构和作为药物载体的特点,综述了微乳液近年来作为药物载体在不同给药途径中的应用,并指出微乳在药品领域的研究和发展会有广阔的前景.

  20. Toprak Solucanlarından Elde Edilen Vermikompostun Bazı Bitki Patojenleri Üzerindeki Antimikrobiyal Aktivitelerinin Araştırılması

    OpenAIRE

    Tutar, Uğur

    2013-01-01

    It was determined that ‘vermicompost’ created by earthworms by breaking down and decomposting organic waste biologically was effective against some pathogenic bacteria and fungi. In this study, tests of “disc diffusion" and "MIC" tests were applied to identify effects against soil-borne pathogen nine species bacteria and nine species fungi that cause diseases in plants by using extracts obtained using choloroform and ethanol from Eisenia fetida type earthworm’s “vermicompost”. According to th...

  1. Pseudo information entropy of a three-level atom interaction with two-laser fields in -configuration

    Indian Academy of Sciences (India)

    A-S F Obada; T M El-Shahat; M Abdel-Aty

    2003-10-01

    In this report we investigate some aspects of the pseudo entropy of multi-level system in the language of quantum information theory. The influence of the non-linear interaction and detuning parameter on the properties of the pseudo information entropy is examined.

  2. Fonksiyonel Bir Gıda: “Şifalı Top ”

    Directory of Open Access Journals (Sweden)

    Sıdıka Nur Kıyak

    2014-06-01

    Full Text Available Sağlıklı beslenme bilincinin gelişmesiyle birlikte, tüketiciler gıdalardan beslenmenin yanı sıra sağlık açısından da faydalar beklemektedirler. Tüketicilerin yeni ürünlere olan bu beklentileri neticesinde fonksiyonel gıdalar, gıda sanayinin en hızlı gelişen sektörlerinden biri olmuştur. Bu çalışmada besin değeri yüksek ve sağlıklı beslenme açısından faydalı olan fakat günlük hayatta tüketilmesi özellikle çocuklar tarafından çok tercih edilmeyen brokoli, karnabahar ve kereviz sebzelerinin kullanıldığı ve çocukların severek tüketmek isteyecekleri fonksiyonel bir ürün elde edilmesi hedeflenmiştir. Ayrıca bayat ekmeklerin öğütülerek kullanıldığı bu ürün ile ekmek israfının önlenmesi de amaçlanmıştır. Yuvarlanıp minik top şekli verilen bu fonksiyonel gıdaya “Şifalı top” ismi verilmiş ve çikolata ve çilek sosu ile servis edilmiştir.

  3. Türkçe Öğretmeni Adaylarının Dinlerken Not Alma Stilleri / Turkish Language Teacher Candidates’ Note-Taking Styles while Listening

    Directory of Open Access Journals (Sweden)

    Gürkan TABAK

    2016-01-01

    Full Text Available Bu araştırma, Türkçe öğretmeni adaylarının dinlerken not alma stillerinin tespit edilmesi amacıyla gerçekleştirilmiştir. Bu araştırmada temel nitel çalışma deseni uygulanarak gerçekleştirilmiştir. Araştırmanın katılımcılarını, 2013–2014 eğitim-öğretim yılı güz döneminde Erciyes Üniversitesi Eğitim Fakültesi Türkçe öğretmenliği bölümü üçüncü sınıfa devam eden 22 Türkçe öğretmeni adayı oluşturmuştur. Katılımcıların belirlenmesinde kolay ulaşılabilir durum ve maksimum çeşitlilik örneklemelerinden yararlanılmıştır. Araştırmanın verileri, öğretmen adaylarının tuttuğu notlardan elde edilmiştir Elde edilen notlar, dokümanlar olarak araştırmada yer almış ve içerik analizi tekniği ile incelenmiştir. Araştırma sonucuna göre, adayların dinlerken farklı not alma stillerine sahip oldukları ortaya çıkmıştır. Adayların not alma tekniği kullanma, içerik belirtme, vurgulama, sınıflama ve kısaltma bakımından notlarının farklılaştığı tespit edilmiştir.

  4. Development of coping with stress scale based on Turkish proverbs-CSSTPTürk atasözlerine dayalı stresle başa çıkma ölçeğinin (TASBÖ geliştirilmesi

    Directory of Open Access Journals (Sweden)

    Kamile Bahar Aydın

    2014-08-01

    Full Text Available In this research, coping with stress scale was developed by utilizing Turkish proverbs. Data were collected in 2012 from 157 participants whose age average is 35,58, and have at least a bachelor’s degree. As a result of analyzing data through Explanatory Factor Analysis, the scale consists of 36-items and three factors were obtained. The factors (components are titled as 1 Inclination Religion, 2 Optimism, and 3 Acquiring Power. Also, in order to determine the relationships between CSSTP and personality type, Five-Factor Personality Inventory (FFPI and Almost Perfect Scale- Revised (APS-R were utilized. The examination of data showed that there are significant positive correlations between all factors of the CSSTP and only extroverted factor of the FFPI. There are significant relationships in a positive direction and at low and medium levels between the religious inclination factor of the CSSTP and all factors (high standards, dissatisfaction, and discrepancy of the APS-R. According to internal consistency analysis, Cronbach’s Alpha Coefficients of the CSSTP ranged between 0.75 and 0.91. In conclusion, some suggestions were offered to counselors, researchers, Turkish language experts, and the politicians.  ÖzetBu araştırmada, Türk atasözlerinden yararlanılarak, Türk Atasözlerine Dayalı Stresle Başa Çıkma Ölçeği -TASBÖ geliştirildi. Veriler, 2012 yılında yaş ortalaması 35, 58 olan, en az üniversite mezunu 157 katılımcıdan toplandı. Elde edilen verinin Açıklayıcı Faktör Analizi yöntemiyle analiz edilmesi sonucunda, 36 maddelik ve üç faktörden oluşan bir ölçek elde edildi. Faktörler; 1 Dine Yönelme, 2 İyimserlik ve 3 Güç Elde Etmedir. Ayrıca, TASBÖ’nün kişilik tipiyle ilişkisini belirlemek amacıyla, Beş Faktörlü Kişilik Envanteri (BFKE ve Gözden Geçirilmiş Mükemmeliyetçilik Ölçeği (GMÖ kullanıldı. Bu inceleme sonucunda, TASBÖ’nün tüm faktörlerinin, BFKE’nin yalnızca,

  5. Stres Koşullarında ACC Deaminaze Üretici Bakteriler Tarafından Bitki Gelişiminin Teşvik Edilmesi / Promotion of Plant Growth by ACC Deaminase-Producing Plant Growth Promoting Bacteria under Stress Conditions

    OpenAIRE

    Çakmakçı, Ramazan

    2011-01-01

    ÖZET: Aminosiklopropan karboksilat deaminaze (ACCD) enzimi içeren bitki gelişimini teşvik eden bakteriler, özellikle farklıçevresel stres koşullarını takiben bitki etilen düzeyini azaltarak bitki büyüme ve gelişmesine katkı sağlamaktadır. Toprakbakterilerinde belirlenen bu enzimin bitki-bakteri birlikteliğinde önemli rol oynadığı ileri sürülmektedir. Bu durumda ACCdeaminaze içeren bakteri bitki etilen düzeyini azaltabilirse, uy...

  6. Dengeleme Teorisi’nin Geçerliliğinin Panel Veri Analizi ile Test Edilmesi: BİST’de Ampirik Bir Uygulama(Testing the Validity of Trade-Off Theory by Using Panel Regression Analysis: An Empirical Application on ISE

    Directory of Open Access Journals (Sweden)

    İbrahim BOZKURT

    2014-12-01

    Full Text Available The aim of this study is to test the validity of Trade-Off theory by investigating the relationship between capital structures and market values of firms on ISE. In this study, 127.008 financial ratio, 20.664 monthly stock return, 4.704 market value and debt ratio which are belong to 168 firms traded on ISE between 2005 and 2011 is used. Firstly, efficient model predicting bankruptcy is confirmed by using balanced panel regression analysis for ISE. Secondly, by using efficient model, firms are divided two groups that consist of firms which have or not bankruptcy risk for each period and the relationship market values and debt levels of firms in each group is analyzed by using unbalanced panel regression analysis. The results of the analysis reveal that there is positive relationship between market values and debt levels of firms in terms of both groups. This result implies that Trade-Off theory is not validity on ISE.

  7. Dengeleme Teorisi’nin Geçerliliğinin Panel Veri Analizi ile Test Edilmesi: BİST’de Ampirik Bir Uygulama(Testing the Validity of Trade-Off Theory by Using Panel Regression Analysis: An Empirical Application on ISE)

    OpenAIRE

    İbrahim BOZKURT

    2014-01-01

    The aim of this study is to test the validity of Trade-Off theory by investigating the relationship between capital structures and market values of firms on ISE. In this study, 127.008 financial ratio, 20.664 monthly stock return, 4.704 market value and debt ratio which are belong to 168 firms traded on ISE between 2005 and 2011 is used. Firstly, efficient model predicting bankruptcy is confirmed by using balanced panel regression analysis for ISE. Secondly, by using efficient model, firms ar...

  8. 50 MHz – 26,5 GHz Aralığında Çalışan Toplam Güç Radyometrenin Gerçekleştirilmesi ve Test Edilmesi - Realization and Test of The Total Power Radiometer Working Between 50MHz and 26.5 GHz Frequency Range

    OpenAIRE

    Celep, Murat; Yaran, Şenel; Hayırlı, Cem; Dolma, Arif

    2013-01-01

    Bu çalışmada, yarı iletken bir gürültü kaynağının “excess noise source” (ENR) değerini izlenebilir şekilde ölçmek için bir toplam güç radyometre kurulmuştur. Oldukça geniş olarak kabul edilen 50 MHz – 26,5 GHz frekans aralığında, gürültü kaynağını tek seferde ölçebilen bu sistemin testi, nominal 15 dB ENR değerine sahip standart gürültü kaynakları kullanılarak yapılmıştır. Geliştirilen toplam güç radyometre kullanılarak, değeri bilinen bir gürültü kaynağının hesaplanan ENR değerleri ile gerçe...

  9. Türk Edebiyatının Klasik Eserlerinin Günümüz Televizyon İzleyicisine Sunumu ve İzleyici Algısının Analiz Edilmesi The Presentation Of The Canonical Texts In Turkish Literature To The Contemporary Tv Audience And The Analysis Of The Audience Perception

    Directory of Open Access Journals (Sweden)

    Murat KORKMAZ

    2013-07-01

    Full Text Available Literary texts are the most invaluable sources in various culturesand societies. Though these texts have been concerned with history,culture and art, this concern has changed recently for all the traditionalvalues have been slaves to economic prospects. Among the mostsignificant reasons of this issue are the fulfilment of social expectations,and several institutions’ desire to earn a great deal of money. This caseis considered to be a symbol of disregarding the importance of historyand art. Pecuniary advantage is placed on the top in most fields,including art and literary texts as well. The problems, which have arisendue to changing social and cultural perspectives, have led lots ofdifferent institutions to act strategically. The objective of this research isto study the presentation of the canonical texts in Turkish literature tothe contemporary TV audience, and to analyse the perception of theaudience, concerning the TV series, and to discuss the advantages gotfrom the audience. Furthermore, such matters as loss anddegeneration, related to the national values, caused by making changes,and mistakes in the literary texts just for the sake of attracting theaudience’s attention, have been studied in the paper. This research isan applied one which dwells on such “NOVELS” as Aşk-ı Memnu,Hanımın Çiftliği and Yaprak Dökümü. Prior to the evaluation of therepresentation of these texts on television, and perceptions of theaudience as to the texts, a literature review has been conducted. Thequestionnaire used in the study consists of two different sections. Thefirst part includes the questions on the demographical characteristicsof the participants, and the second part includes the questions,prepared in 5 point likert scale. The population of the study iscomposed of the TV viewers, living in İstanbul and Ankara. (N=300women and men have participated in the study. Data obtained from theresearch have been analysed by SPSS 20 statistical programme. Data have been analysed in terms of reliability, and Cronbach’s Alfa value has been 0.920. This value shows that the study is highly reliable. Data have been analysed with different analysis methods and finally it has been detected that the participants have pointed to the significant differences between the original literary texts and the TV adaptations. Birçok kültür ve toplumun en önemli değerleri arasında edebiyat eserleri yer alır. Bunlar geçmişten günümüze yansıyan başta yaşanmışlıklar, tarih, kültür ve sanata yönelik yapıtlardır. Oysaki günümüzde bunun tam tersi olarak geçmişteki bu değerler ekonomik bir takım rant ve beklentilerin esiri olmuştur. Bunun da en önemli nedenleri arasında toplumsal beklentilerin karşılanması ve buna paralel olarak bir takım kurum ve kuruluşların bunu bir rant haline dönüştürme düşüncesidir. Bu durumu yine tarih ve sanata verilmeyen önem olarak gösterebiliriz. Birçok alanda olduğu gibi sanat ve edebi eserler noktasında da artık ekonomik beklenti en ön plandadır. Değişen toplum ve kültür anlayışına paralel olarak ortaya çıkan sorunlar yine birçok farklı kurumun stratejik olarak hareket etmesine neden olmaktadır. Bu çalışmanın amacı, geçmişten günümüze yansıyan klasik Türk edebiyatı içerisinde değerlendirilen eserlerin günümüz televizyon izleyicisine sunulması ve izleyici üzerinde oluşturduğu algının belirlenmesidir. Çalışmamız, son yıllarda bir dizi furyası şeklinde ortaya çıkan televizyon yapıtlarının izleyiciye sunulması ve izleyiciden sağlanan avantajların neler olduğunun belirlenmesidir. Ayrıca seyircinin ilgi ve beğenisini kazanmak amacıyla eserlerde meydana getirilen erozyon ve değişiklikler nedeniyle ortaya çıkan milli değer kayıpları başta olmak üzere yapılan yanlışlıklar ve olumsuzluklar yazıda gösterilmeye çalışılmıştır. Araştırma uygulamalı bir araştırmadır. Araştırmada üç edebi eser “ROMAN” ele alınmıştır. Bunlar; Aşk-ı Memnu, Hamının Çiftliği ve Yapra

  10. Nedelsky ve Angoff Standart Belirleme Yöntemleri ile Elde Edilen Kesme Puanlarının Genellenebilirlik Kuramı ile Karşılaştırılması

    Directory of Open Access Journals (Sweden)

    Gülşen TAŞDELEN

    2010-06-01

    Full Text Available In this study, according to generalizability theory (G theory the variance components of the cutting scores obtained from Nedelsky and Angoff standards setting methods were compared. The data of this research were collected by using the 16 science and technology items which were asked on elementary 6th grade “Achievement Determination Exam (Seviye Belirleme Sınavı (SBS”. These items were graded by 40 science and technology experts (raters working in Ankara according to these two standards setting methods. The variance components of the cutting scores were obtained by using G theory. According to the results of the study, it is determined that the differences of the items can be revealed by using both Angoff and Nedelsky standards setting methods. While there is a rater consistency for the cutting scores obtained by Angoff method, rater consistency was not observed for the cutting scores obtained by Nedelsky method. In G study which both methods were taken in hand together, it was observed that the differences of the items could be revealed and there is a rater consistency for the cutting scores

  11. 强效艾美耳牌鸡球虫苗Ⅰ型的田间试验%EFFICACY OF EINERIVAC PLUS, A COCCIDIOSIS VACCINE, AGAINST COCCIDIOSIS IN BROILERS UNDER FI ELD CONDITIONS

    Institute of Scientific and Technical Information of China (English)

    索勋; 汪明; 吴文学; 潘保良

    2001-01-01

    Three trials were designed to test the efficacy of Eineri vac Plus,a coccidiosis vaccine developed in the Parasitology Laboratory,College of Veterinary Medicine,China Agricultura l University,against coccidiosis in broi lers under field conditions.In the first trial,broliers vaccinated by oral dropp ing at day old were compared with non-va ccinated,maduramasinmedicated broilers.I n the second trial,chickens vaccinated t hrough feed-spraying at day old were com pared with non-vaccinated,diclazuril-med icated chickens.In the third trial,birds vaccinated by oral dropping at 5 days o ld were compared with non-vaccinated,non -medicated birds. Compared with maduramasin,Einerivac Plus was move effective,judged by resistance to challenge infection and performance, in terms of food conversion and body wei ght gains.Compared with diclazuril,Einer ivac Plus was of the same efficacy,judge d by food conversion and body weight gai ns,but vaccinated chickens were more res istant to challenge infection.Compared w ith non-vaccinated,non-medicated birds,b irds that were vaccinated performed bett er,judged by body weight gains,food conv ersion,and livability.%本文报道了强效艾美耳牌鸡球虫苗Ⅰ型对AA肉用仔鸡的田间免疫效果,马杜霉素或地克珠利作为对照药物;另一组以不用任何抗球虫药物作为对照。实验显示,与马杜霉素相比,使用强效艾美耳牌鸡球虫苗Ⅰ型后,AA肉用仔鸡在增重、饲料效率和成活率方面的优势;与地克珠利相比,使用强效艾美耳牌鸡球虫苗Ⅰ型后,AA肉用仔鸡在增重和饲料效率方面,效果相当,但成活率高 1%;与不用抗球虫药物组相比,使用强效艾美耳牌鸡球虫苗Ⅰ型后,鸡群在增重、饲料效率、成活率方面,均有显著优势。

  12. Reflection on the efficiency criteria for a long duration disposal with respect to temporary abandonment situations; Reflexion sur les criteres de performance d'un entreposage de longue duree (ELD) vis-a-vis des situations de delaissement temporaire

    Energy Technology Data Exchange (ETDEWEB)

    Heriard-Dubreuil, G.; Gadbois, S. [Mutadis, 75 - Paris (France); Chieber, C.; Schneider, Th. [Centre d' Etude sur l' Evaluation de la Protection dans le Domaine Nucleaire, 92 - Fontenay aux Roses (France)

    2002-08-15

    A study carried out by Mutadis and CEPN, on request of the CEA, aimed at supplying some elements allowing to elaborate some performance criteria for a long-term management system in front of situations of temporary abandonment of radioactive waste disposal facilities. The first part of the study has been the identification of case studies illustrating situations of loss of maintenance or temporary abandonment. The second phase has been the selection and analysis of 4 case studies (the ancient underground cavities in Ile-de-France, the regulation relative to new underground quarries, the abandoned mines in Loraine basin, and Unesco's approach for the protection of mankind world patrimony). These cases have been analysed with respect to various aspects: actors involved, construction management and memory preservation, liabilities in time and space, prevention means, scheduling, and resumption strategies. The concepts of abandonment, scheduling and resumption have been precised and analysed in a third part according to the case studies. Three goals - avoiding abandonment, encouraging scheduling and resumption - and eight characteristics are drawn from this analysis, which are indicators of the robustness of the system implemented to fulfill these 3 goals. These characteristics appear as strongly interdependent. (J.S.)

  13. Atık Alkali Pillerden Elde Edilen Çinko Tozun Sodyum Hidroksit Çözeltilerindeki Çözünürlüğünün İncelenmesi

    OpenAIRE

    Özdemir, Gülistan Deniz Turhan; Demirkıran, Nizamettin

    2016-01-01

    Atık pillerin metal içerikleri metalürjik yöntemler yardımıyla geri kazanılabilir. Bu yöntemlerden birisi hidrometalurjik metottur ve sulu çözeltilerde kimyasal reaksiyonlar yardımıyla metal, metal tuzları ve bileşiklerinin üretimini kapsar. Metodun ilk aşaması katı sıvı kütle transferini içeren liç prosesidir. Liç işleminde katı madde bir çözücü ile çözündürülür ve metal değerler çözelti ortamına transfer edilir. Bu çalışmada, atık alkali pillerdeki çinko pil tozunun sodyum hidro...

  14. 老年冠心病患者同型半胱氨酸水平与心功能关系探讨%Relationship between plasma homocysteine and heart funtion in eldly patients with coronary heart desease

    Institute of Scientific and Technical Information of China (English)

    姚丽梅; 文宏; 刘唐威

    2008-01-01

    目的 探讨老年冠心病患者血中同型半胱氨酸(Hcy)水平与心功能的关系.方法 65例老年冠心病患者按美国纽约心脏病学会心功能分级标准(NYHA)分为4级,分别测定各级Hcy水平.结果 心力衰竭组Hcy升高的比率83.7%,较心功能正常组Hcy升高的比率(6.3%)明显增高,差异有统计学意义(P<0.05).心功能Ⅰ、Ⅱ、Ⅲ、Ⅳ级的Hcy分别为(9.37±1.97)、(16.30±3.19)、(20.93±3.38)、(32.44±7.39)μmol/L.4级间比较差异均有统计学意义(均P<0.05).结论 心功能异常组的高Hcy血症较常见,且Hcy水平明显高于心功能正常组,并随着Hcy水平的升高,心功能受损程度增加.

  15. A randomised evaluation of CollAborative care and active surveillance for Screen-Positive EldeRs with sub-threshold depression (CASPER: study protocol for a randomized controlled trial

    Directory of Open Access Journals (Sweden)

    Richards David

    2011-10-01

    Full Text Available Abstract Background Depression accounts for the greatest burden of disease among all mental health problems, and is expected to become the second-highest amongst all general health problems by 2020. By the age of 75, 1 in 7 older people meet formal diagnostic criteria for depression. Efforts to ameliorate the burden of illness and personal suffering associated with depression in older people have focussed on those with more severe depressive syndromes. Less attention has been paid to those with mild disorders/sub-threshold depressive syndromes but these patients also suffer impairments in their quality of life and level of functioning. Methods/Design The CASPER study has been designed to assemble an epidemiological cohort of people over 75 years of age (the CASPER cohort, from which we will identify those eligible to participate in a trial of collaborative care for sub-threshold depression (the CASPER trial. We aim to undertake a pragmatic randomised controlled multi-centre trial evaluating the effectiveness and cost-effectiveness of collaborative care; a low intensity psychological intervention in addition to usual general practitioner care versus usual general practitioner care alone. General practitioners from practices based in the North of England will be asked to identify potentially eligible patients over the age of 75 years. Patients will be sent a letter inviting them to participate in the study. We aim to recruit approximately 540 participants for the CASPER trial. A diagnostic interview will be carried out to ascertain trial eligibility with the major depressive episode module of the Mini International Neuropsychiatric Interview (M.I.N.I., eligible participants randomised to either the intervention or usual care. The primary outcome will be measured with the Patient Health Questionnaire-9 (PHQ-9 and additional quality of life measures will be collected. Data will be collected at baseline, 4 and 12 months for both trial and cohort participants. Trial Registration ISRCTN: ISRCTN02202951

  16. Demir ve Alüminyumun Doğal Sularda UV Spektrofotometrik Tayini İçin Yöntem Geliştirilmesi ve Elde Edilen Verilerin Kemometrik Kalibrasyon Yöntemleriyle Değerlendirilmesi

    Directory of Open Access Journals (Sweden)

    A. Hakan AKTAŞ

    2015-01-01

    Full Text Available In this study, principal component analysis method (PCA, principal component regression method (PCR, partial least squares method (PLS of chemometry calibration methods, are successfully realized on quantitation of Fe³⁺ and Al³⁺ present at natural water. The data gathered from UV- Visible Spectroscopy are evaluated chemometrically. In the application two distinctive ligand chrome azurol S (CAS and pyrocatechol violet (PCV are tested and studies are proceeded with CAS due to more stable results that are obtained. Optimum parameters (ligand amount, pH, waiting period, relation between metal concentration and absorbance, foreign ion effect and conditions of Fe³⁺ and Al³⁺ CAS and their complexes are determined with spectrophotometric methods. After the optimum conditions are provided, spectrophotometric determinations of natural water including Fe³⁺ and Al³⁺ are realized and obtained data are evaluated as chemometry

  17. Üzümden Elde Edilen Düşük Alkollü İçkilerde Şeker Miktarını Azaltma Yöntemleri

    OpenAIRE

    CANBAŞ, Ahmet; ERTEN, Hüseyin; Cabaroğlu, Turgut

    1994-01-01

    Bağcı ülkelerin çoğunda yaş üzümün değerlendirilmesi bir sorun olmakta ve üzümün daha değişik ve yeni ürünlere işlenmesi konusunda çalışmalar yapılmaktadır. Bu ürünler arasında alkolü şaraba göre daha düşük olan, meyve tadı ve aroması belirgin ve bazıları karbondioksit içeren içkiler de yer almaktadır. Bu tür alkollü ve gazla içkiler genel olarak ilgi görmekte, ancak şeker içeriklerinin yüksek olması bazı tüketicilerce olumsuz karşılanmaktadır. Bu nedenle, bu tür içkilerin üretiminde şeker m...

  18. Enformasyon Elde Etme Ve Yaymanın Jenerik Stratejiler itibariyle Faklılaşması: Konaklama işletmeleri Üzerine Ampirik Bir Araştırma

    OpenAIRE

    Türkay, Yrd. Doç. Dr. Oğuz; Pırnar, Prof. Dr. İge

    2013-01-01

    In this study the aim is to figure out the differentiations happening between the strategy groups about information acquisition and dissemination factors Data is collected by questionnaires that are distributed to from 3 4 and 5 star hotels and “special” hotels from all parts of Turkey Than information acquisition and dissemination factors are identified customer oriented information acquisition rival oriented information acquisition information dissemination in formal ways and infor...

  19. The Importance of Database Design and Normalization Process Veri Tabanı Tasarımının Önemi ve Normalizasyon Süreci

    Directory of Open Access Journals (Sweden)

    Tülay Fenerci

    2001-06-01

    Full Text Available Database management systems are major tools which provide management of organizations' operational data via computers. However their efficient usage depends on how well database tables are organized. When undesigned data is stored in the database there probably occur some problems such as data repeating and waste of storage space. In order to prevent such problems a normalization process is applied to tables. Normalization is a process of refining relations where relations are formed by gathering attributes. Hence problems such as repeating of data, dependency and combined relationships are solved with normalized base tables. Therefore database design is an important fact in efficiency of database management systems. Veri tabanı yönetim sistemleri kuruluşların işlemlerinin bilgisayar aracılığı ile yönetilmesini sağlayan önemli araçlardır. Ancak verimli kullanılabilmeleri için veri tabanı tablolarının iyi organize edilmesi gerekir. Tablo tasarımı yapılmadan veriler sisteme yüklenirse veri tekrarı ve yer kaybı gibi sorunlar yaşanabilir. Bu tür sorunların ortadan kaldırılması için tablolar üzerinde normalizasyon süreci uygulanır. Normalizasyon özelliklerin bir araya getirilmesi ile oluşturulan ilişkilerin, rafine edilmesini sağlar. Dolayısıyla elde edilen taban tablolarda tekrar, gizli bağımlılık ve bileşik ilişkilerin bir arada gösterilmesinden kaynaklanan sorunlar çözümlenmiş olur. Bu açıdan veri tabanı yönetim sisteminin verimli kullanımında tasarım önemli bir etki unsurudur.

  20. Tıbbi ve Aromatik Bitkiler ile Sebzelerde Kök Kaynaklı Sekonder Metabolitlerin Üretiminin Artırılmasına Yönelik In Vitro Uygulamalar

    Directory of Open Access Journals (Sweden)

    Tunhan Demirci

    2015-02-01

    Full Text Available İlaç, gıda, kozmetik, parfümeri ve tarımsal mücadele sanayinde önem kazanan sekonder metabolitler bitkilerde kök, sürgün, yaprak, tohum gibi farklı organlarda sentezlenirler. Bu bileşikler bitkilerde çok düşük düzeylerde sentez edildiklerinden yükte hafif, sağlamış olduğu geniş kullanım alanları, etkinlikleri ve ekonomik önemleri ile de pahada ağır olan bileşiklerdir. Bitki köklerinde bulunan sekonder metabolitlerin geleneksel yöntemlerle elde edilmesi, bu bitkilerin doğadan ya da kültür ortamlarından sökümlerine ve değişik yöntemlerle izole edilmelerine dayanmaktadır. Doğadan bitki sökümleri gen kaynaklarının yok olmasına neden olduğu gibi, arazi ve iklim koşullarındaki zorluk ve farklılıklar, metabolit verim ve kalitesindeki farklılıklar ile fazla işgücü gerektirmesi gibi önemli sorunları da beraberinde getirmektedir. Bu nedenle geleneksel yöntemlere göre daha ekonomik, yüksek verim ve kalitede metabolit üretimini sağlayacak yeni yaklaşımlara ihtiyaç duyulmuş ve böylece in vitro teknikler önem kazanmıştır. Bu derleme ile sonraki çalışmalara yol göstermesi için kök kaynaklı sekonder metabolitlerin üretimini artırıcı in vitro uygulamalar hakkında bilgiler verilmesi amaçlanmıştır.

  1. Bilgi Liderliğinin Verimlilik Üzerine Etkisi: Sağlık Sektöründe Bir Araştırma / The Effect of Knowledge Leadership on Productivity: A Research on Health Sector

    Directory of Open Access Journals (Sweden)

    Karahan, Atilla

    2009-04-01

    Full Text Available Bilgiyi sistematik bir biçimde yöneten ve katma değer elde eden işletmeler rekabet avantajı sağlayacak ve rekabeti karşılayacaktır. İşletmelerde bilginin elde edilmesi, saklanması, paylaşılması ve kullanılmasına, diğer bir deyişle bilgi yönetiminin etkin ve başarılı bir şekilde gerçekleşmesine etki eden faktörler bulunmaktadır. Araştırmanın temel amacı küresel ekonomide bilgi liderliğinin verimlilik üzerine etkisinin araştırılmasıdır. Çalışma, bilgiyi üretme ve kullanmada en başarılı örnekleri sergileyen araştırma hastanelerinde görev yapan yöneticiler üzerinde gerçekleştirilmiştir. Araştırmanın kapsamına Afyon Kocatepe Üniversitesi, Isparta Süleyman Demirel Üniversitesi, Konya Selçuk Üniversitesi, Kütahya Dumlupınar Üniversitesi ve Eskişehir Osmangazi Üniversitesi hastanelerinde görev yapan başhekimler, başhekim yardımcıları, hastane müdürleri, müdür yardımcıları, başhemşireler ve başhemşire yardımcılarından oluşan toplam 120 yönetici dahil edilmiştir. Bu araştırmanın sonucunda ise bilgi liderliğinin verimlilik üzerine olumlu etkisi olduğu sonucuna varılmıştır.Organisations, which manage knowledge systematically, would have competitive advantage. In this respect, some factors like collecting, saving, using and sharing knowledge should be subjected under consideration. The main objective of the present research is to examine the knowledge leadership in a global economy. Empirical study was performed on managers of Research Hospitals, who were known with their success in producing and using knowledge. Included in the empirical investigation were hospital managers, managerial assistants, head nurses and assistant head nurses of Afyon Kocatepe University, Isparta Süleyman Demirel University, Konya Selçuk University, Kütahya Dumlupınar University and Eskişehir Osmangazi University hospitals. The results revealed a positive effect of knowledge

  2. Investigation of Cu growth phenomena on Ru substrate during electroless deposition using hydrazine as a reducing agent

    International Nuclear Information System (INIS)

    Cu growth phenomena during electroless deposition (ELD) on Ru substrate were investigated in this study. Different to the formaldehyde based Cu ELD bath, the use of hydrazine based Cu ELD bath facilitated the observation of Cu growth phenomena during ELD. The whole surface-catalyzed ELD occurred on Ru, and electrochemical quartz crystal microbalance as well as linear sweep voltammetry studies revealed that Cu covered Ru surface within a few seconds of ELD. Measurement of sheet resistance change confirmed that Cu nucleation on Ru was continuous with forming a film. During the period, Cu film growth was monitored by an atomic force microscope imaging, indicating that Cu was deposited on Ru preferentially, rather than on the deposited Cu at the initial stage of the deposition. The whole surface-catalyzed ELD achieved 55 nm gap-filling, and this showed the possibility of the practical adoption of ELD as a method for metallization in ultralarge-scale integration

  3. Higher dimensional global monopole in Brans–Dicke theory

    Indian Academy of Sciences (India)

    Farook Rahaman; Subenoy Chakraborty; Mehedi Kalam

    2002-01-01

    The gravitational field of a higher dimensional global monopole in the context of Brans–Dicke theory of gravity is investigated. The space time metric and the scalar field generated by a global monopole are obtained using the weak field approximation. Finally, the geodesic of a test particle due to the gravitational field of the monopole is studied.

  4. Decoherence and infrared divergence

    Indian Academy of Sciences (India)

    J Kupsch

    2002-08-01

    The dynamics of a particle which is linearly coupled to a boson field is investigated. The boson field induces superselection rules for the momentum of the particle, if the field is infrared divergent. Thereby the Hamiltonian of the total system remains bounded from below.

  5. Büyükbaş Hayvan Atıkları için Kurulacak Havasız Çürütme Tesisinin Ekonomik Analizi / The Economical Analysis of Cattle Manure Treatment by Anaerobic Digestion Process

    Directory of Open Access Journals (Sweden)

    Tamer Coşkun

    2012-12-01

    Full Text Available Büyükbaş hayvan atıkları, içeriğindeki yüksek katı madde, organik kirlilik ve patojen mikroorganizmalar sebebiyle halk sağlığı açısından olumsuz etkiler yapabilecek bir atıktır. Bu çalışmada havasız çürütme ile atıkların stabilize edilerek biyogaz elde edilmesi ve çürümüş atıkların toprakta doğal gübre olarak kullanılmasını içeren bir yönetim modeli uygulanmıştır. Bunun için pilot ölçekli bir havasız çürütme reaktörü işletilmiş ve çürümüş atıklar çeşitli dozlarda yonca, Macar fiğ ve arpa karışımı ile mısır silajı bitkilerinin ekildiği alanlarda doğal gübre olarak toprağa eklenmiştir. Havasız çürütme işleminde yarımcı materyal olarak mısır silajı da reaktöre beslenmiştir. Çalışma sonunda elde edilen sonuçlar ve literatür yardımıyla 1000 baş hayvan için kurulum ve işletme maliyetleri hesaplanmıştır. Kurulum maliyeti; elektrik üretim sisteminin kurulup kurulmaması açısından iki farklı değer olarak hesaplanmıştır. İşletme maliyetleri farklı tarla ürünleri ve yine elektrik sisteminin kurulup kurulmaması açılarından çeşitli durumlar için hesaplanmıştır. Sonuç olarak elde edilen en iyi sonuçlara göre; çürümüş atıklar Macar fiğ ve arpa karışımı bitkisinin ekiminde kullanıldığında kurulacak tesisin elektrik üretim sistemi de kurulduğunda 2,5 yılda, elektrik üretim sistemi kurulmadığında ise 2,1 yılda kendisini amorti ettiği bulunmuştur. The Economical Analysis of Cattle Manure Treatment by Anaerobic Digestion Process Cattle manure is a potential for causing detrimental effects on human health due to its high solid matter and pathogen microorganism content. In this study, it was aimed to achieve biogas production by stabilizing the waste using anaerobic digestion. Digested waste was utilized as natural fertilizer. For that reason, a pilot-scale anaerobic digestion tank was operated and digested wastes

  6. Büyükbaş Hayvan Atıkları için Kurulacak Havasız Çürütme Tesisinin Ekonomik Analizi

    Directory of Open Access Journals (Sweden)

    Tamer Coşkun

    2012-12-01

    Full Text Available Özet Büyükbaş hayvan atıkları, içeriğindeki yüksek katı madde, organik kirlilik ve patojen mikroorganizmalar sebebiyle halk sağlığı açısından olumsuz etkiler yapabilecek bir atıktır. Bu çalışmada havasız çürütme ile atıkların stabilize edilerek biyogaz elde edilmesi ve çürümüş atıkların toprakta doğal gübre olarak kullanılmasını içeren bir yönetim modeli uygulanmıştır. Bunun için pilot ölçekli bir havasız çürütme reaktörü işletilmiş ve çürümüş atıklar çeşitli dozlarda yonca, Macar fiğ ve arpa karışımı ile mısır silajı bitkilerinin ekildiği alanlarda doğal gübre olarak toprağa eklenmiştir. Havasız çürütme işleminde yarımcı materyal olarak mısır silajı da reaktöre beslenmiştir. Çalışma sonunda elde edilen sonuçlar ve literatür yardımıyla 1000 baş hayvan için kurulum ve işletme maliyetleri hesaplanmıştır. Kurulum maliyeti; elektrik üretim sisteminin kurulup kurulmaması açısından iki farklı değer olarak hesaplanmıştır. İşletme maliyetleri farklı tarla ürünleri ve yine elektrik sisteminin kurulup kurulmaması açılarından çeşitli durumlar için hesaplanmıştır. Sonuç olarak elde edilen en iyi sonuçlara göre; çürümüş atıklar Macar fiğ ve arpa karışımı bitkisinin ekiminde kullanıldığında kurulacak tesisin elektrik üretim sistemi de kurulduğunda 2,5 yılda, elektrik üretim sistemi kurulmadığında ise 2,1 yılda kendisini amorti ettiği bulunmuştur. Abstract Cattle manure is a potential for causing detrimental effects on human health due to its high solid matter and pathogen microorganism content. This study aims to achieve biogas production by stabilizing the waste using anaerobic digestion. Digested waste was utilized as natural fertilizer. For that reason, a pilot-scale anaerobic digestion tank was operated and digested wastes were added to soil in diverse dosages where alfalfa, the mixture of Hungarian

  7. Child abuse and neglectÇocuk istismarı ve ihmal

    Directory of Open Access Journals (Sweden)

    İlyas Özgentürk

    2014-07-01

    Full Text Available Children's physical, emotional and sexual abuse and neglect are widespread social and health problem across societies. Child abuse covers all kinds of attitudes and neglects that affect and limit children physical and emotional development by the parents or child careers. Child abuse affects the children’s emotional and physical development negatively. A child whose emotional development is disturbed lives with very serious psychological and communication problems as well as decrease of life quality. Child abuse can be a learned and passed through cognitive behavior. It is known that the perpetrators of child abuse are also victims of child abuse in their own childhoods. Child abuse can be one kind of cycle of violence. Today’s victims of child abuse have a tendency to become the perpetrators of tomorrow’s child of abuse. Child abuse can be prevented by the collective efforts of the whole community. Establishing a collective consciousness about the harms of the child abuse can become the initial step of fighting against child abuse. The considerable success can be reached when effective public policies, which attribute to collective consciousness addressing different fractions of the society are established. ÖzetÇocukların fiziksel, duygusal ve cinsel yönden istismar ve ihmal edilmesi tüm toplumlarda yaygın görülen bir sosyal ve sağlık sorunudur. Çocuk istismarı ve ihmali; çocuğun anne, babası ya da bakmakla yükümlü olan bir kimse tarafından çocuğun fiziksel ve duygusal gelişimini engelleyen ya da kısıtlayan eylem ve ihmallerin tümüdür Çocuk istismarı çocuğun duygusal ve fiziksel gelişimini olumsuz yönde etkiler. Duygusal gelişimleri bozulan çocukların yaşam kaliteleri düşer ve sonraki yaşamlarında ciddi psikolojik ve iletişim sorunları yaşarlar. Çocuk istismarı öğrenilen ve nesilden nesile aktarılan bir davranıştır. Çocuklarını istismar eden kişilerin bir zamanlar kendilerinin de

  8. İçsel Markalaşma Uygulamalarıyla Markanın Örgüt İçerisinde Tutundurulması: ARKAS Holding Örnek Olayı* ( Promoting Brand Within Organization Via Internal Branding: ARKAS Holding Case Study

    Directory of Open Access Journals (Sweden)

    Aysun KAHRAMAN

    2015-12-01

    Full Text Available İçsel markalaşma; çalışanların, çalıştıkları işletmenin marka vaadini, marka değerini anlaması ve benimsemesi sonucunda, dış müşterilerin de markayı daha kolay benimseyeceğini savunmaktadır. Bu çalışmanın amacı, ülkemiz literatüründe yeterince ele alınmamış olan içsel markalaşma olgusunu teorik temeller ve uygulama aşamaları açısından açıklığa kavuşturmaktır. Çalışmada ilk olarak markalaşmanın önemine ve markalaşma sürecinde çalışanların rollerine değinilmiştir. Daha sonra içsel markalaşma kavramı, içsel markalaşma uygulamalarında kullanılan teknikler ve araçlar teorik olarak incelenmiştir. Çalışmanın uygulama bölümü için bir hizmet işletmesi olan Arkas Holding’in iki yöneticisiyle, Arkas Holding’deki içsel markalaşma uygulamalarıyla ilgili olarak derinlemesine görüşmeler yapılmıştır. Yapılan görüşmeler sonrasında elde edilen bulgular değerlendirildikten sonra Arkas Holding’de içsel markalaşmanın önemi, içsel markalaşma uygulamalarının nasıl gerçekleştiği, bu süreçte dikkat edilmesi gereken unsurlar ve karşılaşılan zorluklar ortaya konulmuştur. Internal branding supports the idea that external customers will internalize the brand more easily if employees understand and adopt the brand promise and brand values of the company which they work for. The aim of this study is to clarify internal branding phenomenon, which which has not been discussed enough in the Turkish literature, in terms of literature and application areas. Firstly the study has discussed the importance of branding process and the role of employees in this process. Then, the concept of internal branding, the technics and the tools whics are used for application of internal branding is examined theoretically. In the application part in-depth interviews were conducted with two managers of Arkas Holding about internal branding activities in Arkas Holding. After

  9. ELEMENTARY 8 TH GRADE STUDENT’S LEVEL OF ABILITY TO APPLY SPELLING RULES AND PUNCTUATION MARKS İLKÖĞRETİM 8. SINIF ÖĞRENCİLERİNİN NOKTALAMA İŞARETLERİ İLE YAZIM KURALLARINI UYGULAYABİLME DÜZEYİ

    Directory of Open Access Journals (Sweden)

    Hasan BAĞCI

    2011-01-01

    Full Text Available In a written text, in order to clarify the narration and reinforce the comprehensibility for readers to understand it accurately and properly, it is required to pay attention while applying spelling rules and using punctuation marks appropriately in their proper places. Regardless of their levels, when students’ written texts are analyzed, it is found that erroneous sentences mostly focus on punctuation and spelling rules. Due to the fact that these errors cannot be corrected, problems related to insufficient use of mother tongue are encountered. Because of this reason, the aim of the present study is to determine students’ level of ability to apply spelling rules and punctuation marks at elementary schools’ 8 th grade, which is the last phase of obligatory education. In this study, two written texts which were chosen from Turkish Language course books of secondary education were used to collect data. In the ligth of the findings, the students’ achievement levels of ability to apply spelling rules and use punctuation Marks in an appropriate way were determined. Yazılı bir metinde anlatımı belirginleştirmek, yazının tam ve doğru bir şekilde anlaşılmasını kuvvetlendirmek için noktalama işaretlerinin yerli yerinde kullanılmasına ve yazım kurallarına uyulmasına dikkat edilmesi gerekir. Hangi seviyede olursa olsun öğrencilerin yazılı anlatım metinleri incelendiğinde hatalı cümlelerin daha çok noktalama ve yazım kuralları üzerine yoğunlaştığı görülmektedir. Bu hataların giderilememesinden kaynaklanan ana dili kullanma yetersizliği sorunuyla karşılaşılmaktadır. Bu yüzden araştırmanın amacı zorunlu eğitimin son aşaması olan ilköğretim 8. sınıf öğrencilerinin noktalama işaretleri ile yazım kurallarını doğru uygulayabilme düzeylerini tespit etmektir. Bu araştırma betimsel nitelikte bir alan araştırmasıdır. Araştırmada veri toplamak amacıyla ilköğretim ikinci kademe T

  10. Genetik Epidemiyolojide Kullanılan Bazı Araştırma Tasarımları

    Directory of Open Access Journals (Sweden)

    Esra PAMUKÇU

    2012-01-01

    Full Text Available Genetik epidemiyoloji, insan toplumunda ve onların aileden miras kalan özelliklerinde, hastalığa yol açan gen ve çevresel faktörlerin etkileşimini inceleyen bir bilim dalıdır. Son yıllarda kullanılmaya başlanılan tüm-genom çaplı araştırmalar, geniş hasta ve kontrol gruplarının, kısa sürede ve yüksek çözünürlükle analiz edilmesini mümkün kılarak genetik çalışmalara ivme kazandırmış, kalıtsal hastalıklara genetik bakışı farklılaştırmış ve yeni kavramlar yüklemiştir. Böylece genetiğin sadece basit, yüzeysel ve nadir karakteristiklerin kalıtımı ile ilgilendiği düşüncesi, günümüzde hayatın temel şekillenme süresinde genlerin oynadığı rolün anlaşılması şekline dönüşmüştür. Türkiye'de halk sağlığı çalışmalarında epidemiyolojik yöntemler sık olarak kullanılırken, genetik faktörlerin halk sağlığı üzerindeki olası etkilerinin incelenmesine duyulan ihtiyaç nedeniyle, bu alanda çalışan klinisyenlerin, genetik epidemiyoloji konusundaki ilgisinin arttığı gözlemlenmektedir. Epidemiyoloji, genellikle toplum tabanlı örneklemeyi kullanarak akraba olmayan kişiler üzerinde çalışırken; genetik epidemiyoloji, hastalıkla alakalı bir aile öyküsüne sahip, genetik olarak yüksek risk grubunda ve akraba olan belirli kişiler üzerine yoğunlaşmaktadır. Bu nedenle genetik çalışmalarda kullanılan çalışma tasarımları da epidemiyolojide kullanılan genel tasarımlardan belirli şekillerde farklılıklar gösterebilmektedir. Bu derlemenin amacı, epidemiyolojik araştırmalarda kullanılan olgu kontrol ve kohort araştırma tasarımlarının, hastalıkların genetik yapı ve çevre ile olan ilişkisini incelerken nasıl kullanıldığı, bu tür araştırmaların planlama ve analizinde dikkat edilmesi gereken konuları açıklamak amacıyla literatürde var olan bazı makalelerin ve kitapların incelenmesi ve elde edilen bilgilerin özetlenmesidir.

  11. Swarm's absolute magnetometer experimental vector mode, an innovative capability for space magnetometry

    DEFF Research Database (Denmark)

    Hulot, Gauthier; Vigneron, Pierre; Leger, Jean-Michel;

    2015-01-01

    readings of the magnetic eld. Since launch, these ASMs provided very high accuracy scalar eld data, as nominally required for the mission, together with experimental vector eld data. Here, we compare geomagnetic eld models built from such ASM-only data with models built from the mission's nominal 1Hz data......, combining ASM scalar data with independent uxgate magnetometer vector data. The high level of agreement between these models demonstrates the potential of the ASM's vector mode for data quality control and as a stand alone magnetometer, and illustrates the way the evolution of key eld features can easily be...

  12. Effect of VATS Wedge Resection and Mediastinal Lymph Node Sampling in Eldly Patients with Early Peripheral Lung Cancer%肺楔形切除术及纵隔淋巴结采样治疗早期高龄肺癌患者的体会

    Institute of Scientific and Technical Information of China (English)

    楼伟华; 詹晓洪; 项信青; 管伟

    2012-01-01

    Background and objective The treatment for early-stage non-small cell lung cancer is primarily surgical. However, the optimal extent of mediastinal lymph node resection remains to be determined. The aim of the current study is to investigate the effect of a pulmonary wedge resection on aged patients with lung cancer. Methods A total of 15 lung cancer patients aged over 70 years were treated via video-assisted thoracoscopic surgery (VATS) wedge resection and mediastinal lymph node sampling from June 2004 to February 2008. Mediastinal lymph node sampling included stations 2R, 4R, 8 and 9 for the right-sided cancers and stations 5, 6,8 and 9 for the left-sided cancers. Results VATS wedge resection and mediastinal lymph node sampling for aged patients with peripheral lung cancer are minimally invasive treatments with a short operative time and low postoperative morbidity. The 1-year and 3-year survival rates were 100% and 86.6%, respectively. Conclusion VATS wedge resection and mediastinal lymph node sampling can be an alternative treatment for aged patients with early peripheral lung cancer.%背景与目的 治疗早期非小细胞肺癌首选手术治疗,但最佳的淋巴结清扫范围仍然不清楚.本研究旨在探讨肺楔形切除+纵隔淋巴结采样治疗在早期高龄肺癌患者中的价值.方法 2004年6月-2008年2月,共有15例70岁以上周围型肺癌患者接受胸腔镜下肺楔形切除术+纵隔淋巴结采样治疗.右侧肺癌行2R、4R、8及9组淋巴结采样,左侧肺癌行5、6、8及9组淋巴结采样.结果 早期高龄肺癌患者行胸腔镜下肺楔形切除术+淋巴结采样,手术时间短、创伤小,术后并发症少,恢复快.术后1年生存率和3年生存率分别为100%和86.6%.结论肺楔形切除术+纵隔淋巴结采样治疗早期高龄周围型肺癌患者是一种选择.

  13. Evaluation of pyrethroids toxicity in a laboratory strain and a fi eld population of Rachiplusia nu (Lepidoptera: Noctuidae using two bioassay techniques Evaluación de la toxicidad de piretroides en una cepa de laboratorio y una población de campo de Rachiplusia nu (Lepidoptera: Noctuidae usando dos métodos de bioensayo

    Directory of Open Access Journals (Sweden)

    Romina Russo

    2012-06-01

    Full Text Available Soybean is the most important crop in Argentina and Rachiplusia nu (Gueneé (Lepidoptera: Noctuidae is one of its main pests. In this study, the toxicity of five pyrethroids applied topically and by exposure to films on filter paper was evaluated on third instar larvae from a laboratory strain and a field population of R. nu. Four cyanopyrethroids and one non-cyanopyrethroid (permethrin were tested. All cyanopyrethroids showed the same order of increasing toxicity, regardless of the form of application and origin of the larvae: cypermethrin La soja es el cultivo más importante en la República Argentina y Rachiplusia nu (Gueneé (Lepidoptera: Noctuidae, una de sus principales plagas. En este estudio se evaluó la toxicidad de cuatro cianopiretroides y un no-cianopiretroide, aplicados en forma tópica o por exposición a filmes sobre papeles de filtro, en ninfas del tercer estadio de una cepa de laboratorio y una población de campo de R. nu. Todos los cianopiretroides mostraron el mismo orden de toxicidad creciente, independientemente de la forma de aplicación y del origen de las larvas: cipermetrina < ?-cihalotrina < deltametrina < ß-ciflutrina. Los valores de Dosis de Volteo para el 50% (DV50 y de Tiempo de Volteo para el 50% (TV50 aumentaron en función de la solubilidad de los cianopiretroides en agua. El no-cianopiretroide permetrina mostró un comportamiento diferente: fue el insecticida más tóxico para la cepa de laboratorio cuando se hizo una aplicación tópica, pero el menos tóxico cuando las larvas fueron expuestas a filmes sobre papeles de filtro. En general, todos los piretroides fueron más tóxicos para las larvas criadas en laboratorio que para las provenientes del campo. La estimación de los valores de Factor de Resistencia (FR permitió establecer que la población de campo presentaba resistencia moderada o baja a permetrina, cipermetrina y ?-cihalotrina, cuando los insecticidas fueron aplicados en forma tópica. Sin embargo, no se detectó resistencia cuando se realizó la exposición en papeles de filtro tratados. No hubo correlación entre los valores de FR obtenidos por ambos métodos. Estos resultados sugieren que la población de campo de R. nu estudiada, presentaba resistencia moderada a algunos piretroides, y que la aplicación tópica es un método más apropiado que la exposición a filmes sobre papeles de filtro para cuantificar la resistencia.

  14. Kütahya Seyitömer bitümlü şistinin düşük yoğunluklu polietilenle (Dype) karışımının, farklı sıcaklıklarda pirolizinden elde edilen sıvı fazların karakterizasyonu

    OpenAIRE

    TOSUN, Onur

    2010-01-01

  1. Performance analysis of the last champion German National Team in 2014 FIFA World CupSon şampiyon Alman Milli Takımının 2014 FIFA Dünya Kupası performansının analizi

    Directory of Open Access Journals (Sweden)

    Kemal Göral

    2015-04-01

    Full Text Available This study has been carried out to analyze the National Team of Germany that had been the winner of the 2014 FIFA World Cup as the most successful team for several variables. Data analyzed in this research were gathered from the official web site of the Fédération Internationale de Football Association and the international TV channels broadcasting the competitions. Technic parameters such as shots, accurate shots, corner kicks, offsides, accurate and non-accurate passes, and variances of goals scored in the matches were analyzed according to the goal times and areas. Statistics were registered through SPSS program and the percentages and frequencies were calculated. Germany National Team, the most successful team of the 2014 FIFA World Cup has scored 18 goals with an average of 2.57 goals per match without conceding a goal in the first periods . This statistic is similar to all previous tournaments. All along the tournament, most (%74 of the first 11 players of the teams starting the matches were consisted of players from Bundesliga. Accurate shots’ percentage has been determined as %73.2, the average percentage of possessing the ball as %56.71 and also the percentage of accurate passes as %81.9 out of 4990 pass attempts. As a conclusion, to achieve great results in top level tournaments such as FIFA World Cup, there are important performance indicators to take into consideration. Regarding the success of the German National Soccer Team in the tournament, it is argued that especially possessing the ball, shooting and passing accurately with a high rate along with other performance indicators are the base elements of success. ÖzetBu çalışma, 2014 FIFA Dünya Kupasında ilk sırada yer alarak en başarılı takım olan Almanya Milli futbol takımının farklı değişkenler açısından analiz edilmesi amacıyla yapılmıştır. Araştırma verileri, müsabakaları yayımlayan uluslararası TV kanalından ve FIFA (F

  2. Taşkın Riskinin Değerlendirmesine Bir Örnek: Amik Ovası Taşkınları A Sample Of Flood Rısk Assessment: Floods In The Amık Valley

    Directory of Open Access Journals (Sweden)

    Emre ÖZŞAHİN

    2013-09-01

    ık afet boyutunda taşkın olaylarının yaşandığı yerlerdendir. Ovanın doğal ve beşeri özellikleri nedeniyle meydana gelen bu doğal afetler, son yıllarda ciddi oranda ekonomik zarara neden olmuştur. Bu çalışmada, Amik Ovası’nda daha önce yapılan araştırmalardan farklı olarak ilgili doğal afetin, risk potansiyeli ile indeksinin analiz edilmesi ve böylece olası taşkın riskinin haritalandırılıp, açıklanması amaçlanmıştır.Çalışmada materyal olarak, 1/25.000 ve 1/250.000 ölçekli topografya paftaları ile sayısal yükseklik modeli verisi (GDEM kullanılmıştır. Bunun dışındaki diğer veriler 2012 yılı sel-taşkın tespit ve köy brifing raporlarından, Türkiye İstatistik Kurumu (TUİK verilerinden ve telefon görüşmelerinden elde edilmiştir. Çalışmanın haritalama ve analiz aşaması, Coğrafi Bilgi Sistemleri (CBS yazılımlarından ArcGIS/ArcMap 10 paket programı kullanılarak gerçekleştirilmiştir. Ayrıca Uzaktan Algılama (UA teknikleriyle Google Earth (KMZ formatında 2012 tarihli Cnes/Spot Image uydu görüntüsünden de faydalanılmıştır. Elde edilen veriler arazi çalışmaları ile yerinde kontrol edilmiş ve eksik kalan konular bu şekilde tamamlanmıştır. Çalışmanın yöntem kısmı, Tran vd. (2008 tarafından geliştirilen modelinin inceleme alanına uyarlanmasına dayanmaktadır.Çalışma sonucunda Amik Ovası’ndaki olası taşkın riski en fazla (413.96 km² - % 43.49 orta risk derecesine sahip alanlarda tespit edilmiştir. Bu sahalar daha çok ovanın kuzey ve iç kesimlerine karşılık gelmektedir. Ovadaki en riskli alanlar Hatay havaalanının batısı ve güneyi ile Kumlu ve Reyhanlı ilçe merkezlerinin çevrelerindeki kırsal alanlar, risk potansiyelinin düşük olduğu alanlar ise daha çok ovanın doğusunda yayılış göstermektedir.Sonuç olarak Coğrafi Bilgi Sistemleri (CBS yöntem ve teknikleriyle gerçekleştirilen bu çalışma, Amik Ovası’nda yaşanan taşkın afetinin

  3. The Environmental Liability Directive in A More Sustainable Perspective: A Quest to rejuvenate its approach After Lisbon?

    DEFF Research Database (Denmark)

    Pertoldi-Bianchi, Sandra

    2011-01-01

    The problem statement of the article aims at investigating as to whether it is necessary to update the ELD in a more sustainable perception, and on ascertaining this, as to whether there is any need to confront ecological imperatives and economic integration on the compatibility of the regime of...... which the ELD is carrier. Thus, in order to address such a question of research, the analysis of the ELD is carried on in the light of the relevant different principles and concepts present in the ELD. Hence, the need to revisit the legal architecture of the ELD in a "more sustainable future perspective......" might suggest and lead to, a preliminary conclusion on the usefulness to compare the ELD regime with the latest amendements of the TFEU on the free momvement of goods, services and competition rules....

  4. Connections between quantum chromodynamics and condensed matter physics

    Indian Academy of Sciences (India)

    Shailesh Chandrasekharan

    2003-11-01

    Features of QCD can be seen qualitatively in certain condensed matter systems. Recently some of the analyses that originated in condensed matter physics have found applications in QCD. Using examples we discuss some of the connections between the two fields and show how progress can be made by exploiting this connection. Some of the challenges that remain in the two fields are quite similar. We argue that recent algorithmic developments call for optimism in both fields.

  5. Structural, dynamical, and transport properties of the hydrated halides: How do At− bulk properties compare with those of the other halides, from F− to I−?

    OpenAIRE

    Réal, Florent; Severo Pereira Gomes, Andre; Guerrero Martínez, Yansel Omar; Galland, Nicolas; Vallet, Valérie; Masella, Michel; Ayed, Tarah

    2016-01-01

    International audience The properties of halides from the lightest, uoride (F−), to the heaviest, astatide (At−), have been studied in water using a polarizable force- eld approach based on molecular dynamics (MD) simulations at the 10 ns scale. The selected force- eld explicitly treats the cooperativity within the halide-water hydrogen bond networks. The force- eld parameters have been adjusted to ab initio data on anion/water clusters computed at the relativistic Möller-Plesset second-o...

  6. 福井高専環境都市工学科における建築系カリキュラム導入によるデザインマインド育成の取り組み

    OpenAIRE

    江本, 晃美; 廣部, 英一; 武井, 幸久; 山田, 幹雄; 阿部, 孝弘; 吉田, 雅穂; 奥村, 充司; 辻子, 裕二; 辻野, 和彦; 田安, 正茂; 香月, 壮亮

    2013-01-01

    In Dept. of Civil Engineering, we added the contents of the Architecture fi eld to civil engineering towards an engineer's training currently called for by today's construction industry. Although this department was a subject of study for studying only the civil engineering fi eld, it changed to take inthe study about an environmental arena in 1993. And the Architecture fi eld was taken in order to correspond to the talented-people image for which the present construction industry asks this t...

  7. Quantum spin-glass transition in the two-dimensional electron gas

    Indian Academy of Sciences (India)

    Subir Sachdev

    2002-02-01

    We discuss the possibility of spin-glass order in the vicinity of the unexpected metallic state of the two-dimensional electron gas in zero applied magnetic field. An average ferromagnetic moment may also be present, and the spin-glass order then resides in the plane orthogonal to the ferromagnetic moment. We argue that a quantum transition involving the destruction of the spin-glass order in an applied in-plane magnetic field offers a natural explanation of some features of recent magnetoconductance measurements. We present a quantum field theory for such a transition and compute its mean field properties.

  8. Quantitative Measures of Anthropogenic Noise on Harbor Porpoises: Testing the Reliability of Acoustic Tag Recordings

    DEFF Research Database (Denmark)

    Wisniewska, Danuta Maria; Teilmann, Jonas; Hermannsen, Line;

    2016-01-01

    In recent years, several sound and movement recording tags have been developed to sample the acoustic fi eld experienced by cetaceans and their reactions to it. However, little is known about how tag placement and an animal’s orientation in the sound fi eld affect the reliability of on-animal rec......In recent years, several sound and movement recording tags have been developed to sample the acoustic fi eld experienced by cetaceans and their reactions to it. However, little is known about how tag placement and an animal’s orientation in the sound fi eld affect the reliability of on...

  9. Quantitative Measures of Anthropogenic Noise on Harbor Porpoises

    DEFF Research Database (Denmark)

    Wisniewska, Danuta Maria; Teilmann, Jonas; Hermannsen, Line;

    2016-01-01

    In recent years, several sound and movement recording tags have been developed to sample the acoustic fi eld experienced by cetaceans and their reactions to it. However, little is known about how tag placement and an animal’s orientation in the sound fi eld affect the reliability of on-animal rec......In recent years, several sound and movement recording tags have been developed to sample the acoustic fi eld experienced by cetaceans and their reactions to it. However, little is known about how tag placement and an animal’s orientation in the sound fi eld affect the reliability of on...

  10. Electric Field Structures in Thin Films: Formation and Properties

    DEFF Research Database (Denmark)

    Cassidy, Andrew; Plekan, Oksana; Balog, Richard;

    2014-01-01

    by combining layers of different spontelectric materials. This is demonstrated using the spontelectric materials nitrous oxide, toluene, isoprene, isopentane, and CF2Cl2. These yield a variety of tailored electric field structures, with individual layers harboring fields between 107 and 108 V/m. Fields may......A newly discovered class of molecular materials, so-called “spontelectrics”, display spontaneous electric fields. Here we show that the novel properties of spontelectrics can be used to create composite spontelectrics, illustrating how electric fields in solid films may be structured on the nanoscale...

  11. Economic Load Dispatch Using Grey Wolf Optimization

    Directory of Open Access Journals (Sweden)

    Dr.Sudhir Sharma

    2015-04-01

    Full Text Available This paper presents grey wolf optimization (GWO to solve convex economic load dispatch (ELD problem. Grey Wolf Optimization (GWO is a new meta-heuristic inspired by grey wolves. The leadership hierarchy and hunting mechanism of the grey wolves is mimicked in GWO. The objective of ELD problem is to minimize the total generation cost while fulfilling the different constraints, when the required load of power system is being supplied. The proposed technique is implemented on two different test systems for solving the ELD with various load demands. To show the effectiveness of GWO to solve ELD problem results were compared with other existing techniques.

  12. Electron transport in wurtzite InN

    Indian Academy of Sciences (India)

    F M Abou El-Ela; B M El-Assy

    2012-07-01

    Using ensemble Monte Carlo simulation technique, we have calculated the transport properties of InN such as the drift velocity, the drift mobility, the average electron, energy relaxation times and momentum relaxation times at high electric field. The scattering mechanisms included are polar optical phonon, ionized impurity, acoustic phonon and intervalley phonon. It is found that the maximum peak velocity only occurs when the electric field is increased to a value above a certain critical field. This critical field is strongly dependent on InN parameters. The steady-state transport parameters are in fair agreement with other recent calculations.

  13. What Our Hands Say: Exploring Gesture Use in Subgroups of Children with Language Delay

    Science.gov (United States)

    O'Neill, Hilary; Chiat, Shula

    2015-01-01

    Purpose: The aim of this study was to investigate whether children with receptive-expressive language delay (R/ELD) and expressive-only language delay (ELD) differ in their use of gesture; to examine relationships between their use of gesture, symbolic comprehension, and language; to consider implications for assessment and for the nature of…

  14.  Topological quantum field theory: 20 years later

    DEFF Research Database (Denmark)

    Reshetikhin, Nicolai

    2008-01-01

    This article is an overview of the developments in topological quantum field theory, and, in particular on the progress in the Chern–Simons theory.......This article is an overview of the developments in topological quantum field theory, and, in particular on the progress in the Chern–Simons theory....

  15. Quantum Field Theory in de Sitter spacetime

    CERN Document Server

    So, Ashaq Hussain; Sibuea, Marlina Rosalinda; Akhoon, Shabir Ahmad; Khanday, Bilal Nisar; Majeed, Sajad Ul; Rather, Asloob Ahmad; Nahvi, Ishaq

    2013-01-01

    In this paper we will analyse quantum ?eld theory on de Sitter space- time. We will ?rst analyse a general scalar and vector ?eld theory on de Sitter spacetime. This is done by ?rst calculating these propagators on four-Sphere and then analytically continuing it to de Sitter spacetime.

  16. Comparison of the effects of eldecalcitol with either raloxifene or bisphosphonate on serum tartrate resistant acid phosphatase-5b, a bone resorption marker, in postmenopausal osteoporosis

    Science.gov (United States)

    Takada, Junichi; Ikeda, Satoshi; Kusanagi, Tetsuya; Mizuno, Satoshi; Wada, Hiroshi; Iba, Kousuke; Yoshizaki, Takashi; Yamashita, Toshihiko

    2016-01-01

    Summary Objective This study analyzes whether concomitant raloxifene (RLX) or bisphosphonates (BP) plus eldecalcitol (ELD) has excessive suppressive effects on a bone resorption marker during the first 6 months of treatment in postmenopausal women in real-world setting. Methods 285 postmenopausal osteoporotic patients who had been treated with RLX or BP plus ELD were evaluated the bone resorption marker, serum tartrate resistant acid phosphatase-5b (TRACP-5b), during the first 6 months of treatment. Results In drug-naïve group (not received osteoporosis medications before the administration, n=70), the concomitant RLX or BP with ELD significantly decreased levels of TRACP-5b without severe suppression. In vitamin D switch group [RLX or BP plus alfacalcidol (ALF) and then switched to RLX or BP plus ELD, n=215], the replacing ALF with ELD further and significantly decreased TRACP-5b and tertile analyses based on baseline values were significantly decreased far more in the highest, compared with the lowest tertile in the ELD+RLX and ELD+BP groups. Conclusion ELD combined with RLX or BP administered for 6 months to postmenopausal women with osteoporosis who were drug-naïve or who had switched medications significantly reduced and maintained TRACP-5b values within the reference range. PMID:27252739

  17. QTL Information Table: 210 [Q-TARO

    Lifescience Database Archive (English)

    Full Text Available Morphological trait Seed Grain yi eld RFLP C)Interval RIL Zhenshan 97B Milyang 46 RG138 RZ398 pha ... .L. (2001). Comparison of the detection of QTL for yi eld traits in different generations of a rice cross ... using two mapping approaches. Yi ... Chuan Xue Bao 28, 458-464. ...

  18. Corporate Social Responsibility : Management and Methods

    OpenAIRE

    Dobers, Peter

    2009-01-01

    This article gives an overview of recent Corporate Social Responsibility (CSR) handbooks to illustrate that the fi eld is of immediate interest and relevance for scholars and practitio- ners. It gives a background to CSR and how the fi eld relates to management and methods and introduces the four articles of this special issue.

  19. Incentives and Social Relations in the Workplace

    NARCIS (Netherlands)

    J. Sol (Joeri)

    2011-01-01

    textabstractIn this thesis, I study how organizations can incentivize a group of individuals, both in theory and by conducting …eld experiments. The …eld experiments introduce short-term team incentives in a randomly selected sample of stores that belong to a single Dutch retail chain of 128 stores.

  20. Collective flow in relativistic heavy-ion collisions

    Indian Academy of Sciences (India)

    R S Bhalerao

    2003-11-01

    A brief introduction is given to the field of collective flow, currently being investigated experimentally at the Relativistic Heavy-Ion Collider, Brookhaven National Laboratory. It is followed by an outline of the work that I have been doing in this field, in collaboration with Nicolas Borghini and Jean-Yves Ollitrault.

  1. Environmental liability and nature protection areas Will the EU Environmental Liability Directive actually lead to the restoration of damaged natural resources?

    NARCIS (Netherlands)

    Broek, G.M. van den

    2009-01-01

    The EU Environmental Liability Directive (ELD) requires remedial measures when environmental damage to protected species and natural habitats occurs. Thus, the ELD offers a minimum level of protection to natural resources in its Article 2. In order to finance the restoration of environmental damage

  2. Final Report. Grant DOE DE-FG02-04ER54768

    Energy Technology Data Exchange (ETDEWEB)

    Betti, Riccardo [Univ. of Rochester, NY (United States)

    2016-01-11

    The magnetized spherical implosion campaign funded by this grant is summarized in this progress report. The main goal of this grant was to improve the seed eld generator MIFEDS (Magneto- Inertial Fusion Energy Delivery System) on the OMEGA laser to enable experiments at high elds (> 8 T) and to carry out magnetized spherical implosion experiments to study the e ect of magnetic elds on the fusion yield. New experiments were carried out in the last budget period to study the e ect of higher elds and shaped laser pulses. These new experiments improved the magnetized implosion database and allowed us to improve the con dence of our conclusions with respect to the e ect of magnetic elds on implosion performance. The main conclusion is that adding magnetic eld leads to a 30% higher neutron yield, but using seed magnetic eld higher than 8 T does not further increase the neutron yield. A further conclusion is that the yield enhancement due to the magnetic eld is approximately independent of the laser pulse shape.

  3. Terahertz spectroscopy of spin waves in multiferroic BiFeO3 in high magnetic

    Energy Technology Data Exchange (ETDEWEB)

    Nagel, U. [National Institute of Chemical Physics and Biophysics, Estonia; Fishman, Randy Scott [ORNL; Katuwal, T. [National Institute of Chemical Physics and Biophysics, Estonia; Engelkamp, H. [Radboud University Nijmegen, The Netherlands; Talbayev, D. [Tulane University; Yi, Hee Tack [Rutgers University; Cheong, Sang-Wook [Rutgers University; Room, T. [National Institute of Chemical Physics and Biophysics, Estonia

    2013-01-01

    We have studied the magnetic eld dependence of far-infrared active magnetic modes in a single ferroelectric domain BiFeO3 crystal at low temperature. The modes soften close to the critical eld of 18.8T along the [001] (pseudocubic) axis, where the cycloidal structure changes to the homogeneous canted antiferromagnetic state and a new strong mode with linear eld dependence appears that persists at least up to 31 T. A microscopic model that includes two Dzyaloshinskii-Moriya interactions and easy-axis anisotropy describes closely both the zero-eld spectroscopic modes as well as their splitting and evolution in a magnetic eld. The good agreement of theory with experiment suggests that the proposed model provides the foundation for future technological applications of this multiferroic material.

  4. Higgs-Like Particle due to Revised Quantum Electrodynamics

    Directory of Open Access Journals (Sweden)

    Lehnert B.

    2013-07-01

    Full Text Available A Higgs-like particle having zero net electric charge, zero spin, and a nonzero rest mass can be deduced from an earlier elaborated revised quantum electrodynamical theory which is based on linear symmetry breaking through a nonzero electric field divergence in the vacuum state. This special particle is obtained from a composite longitudinal solution based on a zero magnetic field strength and on a nonzero divergence but a vanishing curl of the electric field strength. The present theory further differs from that of the nonlinear spontaneously broken symmetry by Higgs, in which elementary particles obtain their masses through an interaction with the Higgs field. An experimental proof of the basic features of a Higgs-like particle thus supports the present theory, but does not for certain confirm the process which would generate massive particles through a Higgs field

  5. Expectations of today’s accounting education according to Turkey Accounting / Financial Reporting StandartsTürkiye Muhasebe/Finansal Raporlama Standartlarına göre günümüz muhasebe eğitiminden beklentiler

    Directory of Open Access Journals (Sweden)

    Haluk Duman

    2016-01-01

    Full Text Available With globalization, not only limit is lifted between the countries, but also capital and information barriers are lifted. So, financial information is needed for making performance assessment and transferring the scarce resources to efficient and effective field. But, this financial information does not allow the analysis and making comparisons wherefore different information are obtained from country to country as a result of the application of different accounting policies. International financial statements which is unique and prepared by a common measure can be used as a basic guidance in the decision-making by existing and potential investors. Issuing TMS/TFRS set which is fully compliant with IAS and IFRS, the application has been made mandatory for all businesses in our country under the new TTK (Turkish Commercial Code which came into force on January 1, 2013. In this respect, all companies will start preparing financial statements by TMS/TFRS. There are important differences between Turkish tax legislation-the accounting practices of public notification and TMS/TFRS. The accounting training is crucial for minimizing the difference between the basic tax legislation and TMS/TFRS and meeting the expectations of business and the environment by qualified human resources which is most important resource for practising TMS/TFRS effectively and fully on the company.   Özet Küreselleşme ile ülkeler arasındaki sınırlar kalkmamış, aynı zamanda emek, sermaye ve bilgi önündeki engellerde kalkmıştır. Bu bağlamda kıt kaynakların etkin ve verimli alana aktarılması, performans değerlendirmelerinin yapılabilmesi için mali bilgilere ihtiyaç duyulmaktadır. Bu bağlamda ülkeden ülkeye farklı muhasebe politikaları uygulamaları sonucunda elde edilen mali bilgiler analiz ve karşılaştırma yapılmasına izin vermemektedir. Uluslararası tek ve ortak bir ölçüte göre hazırlanmış mali tablolar mevcut ve potansiyel yat

  6. San Remo Konferansı’nda İngiltere’nin Ermeni Politikası (18-26 Nisan 1920 Britain’s Armenian Policy on San Remo Conference (18-26 April 1920

    Directory of Open Access Journals (Sweden)

    Evren KÜÇÜK

    2012-09-01

    Ahoranian Osmanlı Devleti’nden toprak talebinde bulunmaya devam etmişlerdir. Bu taleplerin gerçekleşmesi için Ermeni varlığını koruyacak, geliştirecek ve finanse edecek bir gücün mandaterliğine ihtiyaç vardı. Bu durum konferans esnasında İngiltere’nin de diplomatik manevralar gerçekleştirmesine yol açmıştır. Özellikle İngiltere için Mezopotamya bölgesi önemli olduğundan Anadolu’daki mandaterlik görevi ABD’ye bırakılmaya çalışılmıştır. ABD’nin bu teklifi kabul etmemesi durumunda ise Türk-Ermeni sınırının ABD Başkanı Wilson hakemliğinde çözülmesi öngörülmüştür. San Remo’da bulunan diğer devlet başkanları ise Ermenistan mandaterliğini alma sorumluluğundan rahatsızlık duyup ne mali ne de askeri yardımda bulunamayacaklarını açık bir dille ifade etmişlerdir. Demografik bakımdan sağlam gerekçelere dayanmayan ve uygulanabilirlik ilkesine ters düşen bu taleplerin Mustafa Kemal Paşa önderliğindeki hareket tarafından kabul edilmesi beklenemezdi. Ayrıca Doğu Cephesi’nde elde edilen askeri zaferler, İngiltere’nin Ermenistan politikasının iflasına neden olduğu gibi ABD Başkanı Wilson’un da Sevr Antlaşması’nın 89. maddesine atfen hazırladığı Türk-Ermeni sınırı hakkındaki 22 Kasım 1920 tarihli raporunu da devre dışı bırakmıştır. Varolmak için verilen bu savaş, sonunda, İtilâf blokunun tamamen parçalanıp Fransa ve İtalya’nın milli mücadele hareketine destek vermesiyle sonuçlandığı gibi hem Lloyd George hükümetinin hem de Osmanlı imparatorluk sisteminin sonunu getirmiştir.

  7. Üniversite Öğrencilerinin ‘‘Topluluk Karşısında Konuşma’’ İle İlgili Çeşitli Görüşleri Some Opinions of the University Students Related to “Giving a Speech in Front of Public”

    Directory of Open Access Journals (Sweden)

    Akif ARSLAN

    2012-09-01

    örüşlerini belirlemektir. Bu amaçla Ağrı İbrahim Çeçen Üniversitesi’nin değişik bölümlerinde eğitimlerine devam eden 500 üniversite öğrencisine araştırmacı tarafından geliştirilen anket uygulanarak araştırmanın verileri elde edilmiştir. Çalışmanın sonunda öğrencilerin büyük çoğunluğunun topluluk karşısında konuşmak istediği fakat Türkçeye hâkim olunmaması, Türkçenin sonradan öğrenilmesi, yanlış veya eksik bilgi verme korkusu, dinleyicilerin alaycı davranışları, özgüven eksikliği, utangaç mizaç, diksiyon problemleri, anlaşılmama endişesi gibi çeşitli sebeplerden dolayı ellerine fırsat geçse bile topluluk karşısında konuşmadıkları veya topluluk karşısında konuşmayı gerektiren görevlerden kaçındıkları belirlenmiştir. Araştırma kapsamındaki öğrencilerin sınıfta çoğunlukla başarılı öğrencilere söz verilmesi, topluluk karşısında konuşma etkinliklerinin resmî bayramlardaki birkaç konuşmadan ibaret olması, sınıfların kalabalık olması, öğrencilere yeterince söz hakkı verilmemesi ve daha çok öğretmenlerin konuşması, öğrencilerin öğretmenlerin tepkisinden çekinmeleri, çeşitli merkezi sınavlara odaklanıldığı için konuşma becerisinin ihmal edilmesi gibi bazı sebeplerden dolayı, eğitim kurumlarının bu beceriyi yeterince geliştiremediği düşüncesinde oldukları da tespit edilmiştir. Çalışmada, topluluk karşısında sinirlerin gerilmesi, aşırı derecede heyecanlanma, eleştirilmekten korkma, söyleyeceklerini unutma, bayılma endişesi gibi psikolojik ve terleme, titreme, yüzün kızarması, baş ağrısı, kekeleme, sesin titremesi, kalp atışlarının hızlanması, kelimeleri yutma gibi fiziki özellikler ortaya konulduktan sonra, araştırma kapsamındaki öğrencilerin topluluk karşısında yaşanan heyecanın azaltılması için neler yapılması gerektiğine yönelik çeşitli önerilerine de yer verilmiştir.

  8. Edebi Metnin ve Yaratıcılığın Kaynağına Ulaşan Yol: Psikanalitik Edebiyat Eleştirisi The Way That Reaches the Source of Literary Text and Creativity: Psychoanalytic Literary Critism

    Directory of Open Access Journals (Sweden)

    Ferda ATLI

    2012-09-01

    Full Text Available Literature and psychology are disciplines that should be interacting with each other as they regard human and human nature as their fields of study. Beside the contributions of literature to psychology, the contributions of psychology to literature are in great extent. Today, pyschology acts as scrip with respect to forming and analyzing of characters mentioned in literal texts. Psychoanalysis is an important sub-field of literature as it particularly tries to define the human subconscious and the process of creativity in various ways. The fact that psychoanalysis is applied to artists by the creator of it, Sigmund Freud and later to works of art by his followers, has given rise to the collaboration of psychoanalysis and literature. Scientists such as Freud, Adler, Jung and Lacan, who attempt to bring together psychoanalysis and literature, have tried to obtain better results by developing different methods. By means of these methods developed by scientists dealing with psychoanalysis, literature commentators acquired different dimension in the investigaton of literal text by developing the method of Psychoanalytic Literary Review. Based on the life story of artist or referring features of the characters in literal text, these comments gained multi-layered to texts and helped readers to shed light on inner world of literal text and writer. The aim of this study is to give information about the five important representatives of the psychoanalytic literary criticism and to give examples from the Turkish literature. Edebiyat ve psikoloji insan ve insanın hallerini inceleme alanı olarak kabul etmeleri dolayısıyla birbirlerinden beslenmesi gereken bilim dallarıdır. Edebiyatın psikolojiye katkılarının yanında psikolojinin edebiyata katkıları önemli boyutlardadır. Günümüzde edebi metinlerde işlenen karakterlerin oluşturulması ve tahlil edilmesi hususunda psikoloji pusula mahiyeti göstermektedir. Özellikle insanın bilin

  9. Liselerde Madde Bağımlılığı – Mevcut Durum ve Önerilere İlişkin Okul Müdürleri ve Öğretmenlerin Bakış Açıları Opinions of Schoolmaster and Teachers on Drug Addiction – Present Situation and on Advices in Secondary Schools

    Directory of Open Access Journals (Sweden)

    Yasemin KUBANÇ

    2013-03-01

    Full Text Available Some people are pushed to use drug in the society due to various causes. The reason why these causes should be important and paid attention to is because of the destructive and devastating effect thatdrug use has on people and on these people’s environment. Thissituation has become a problem for societies to struggle with. Use ofdrugs is an important problem within Turkish Education System justlike throughout the world.In this research, school principals and guidance counselors whowork in a high school in Elazığ was met and determining the opinionson the matter of drug use of students was tried so to determine thepresent situation regarding drug use in educational establishments. Inthis context, 10 open ended questions were directed to principals andguidance counselors. In the findings obtained with the analysis of thedata it was determined that the reason for the students to start drugs isdue to familial problems. Friend group, environment, media and othereffective factors are also included. In schools mostly marijuana, heroinand ecstasy are used and students can get their hands on drugs fromoutside of school, internet cafes and inside of school. No significantdifference was found between male and female students regarding druguse. Family, education and state policies stand out as prominentsolutions. Toplum içinde bazı kişiler, çeşitli nedenlerden dolayı uyuşturucu kullanmaya itilirler. Bu nedenlerin önemli hale gelmesini ve dikkate alınmasını gerekli kılan husus, uyuşturucu kullanımının kişiler ve kişilerin yakın çevresinde bulunanlar üzerinde bıraktığı yıkıcı ve yok edici etkidir. Bu durum, toplumlar için baş etmek zorunda oldukları bir sorun halini almıştır. Uyuşturucu madde kullanımı bugün tüm dünyada olduğu gibi Türk Eğitim Sistemi içinde de önemli bir sorundur.Bu araştırmada, eğitim kurumlarında uyuşturucu kullanımına ilişkin mevcut durumun tespit edilmesi amacıyla Elazığ ilinde

  10. Sahra Tozunun Elemental Yapısının Bitkilerin Büyümesi Üzerindeki Göreceli Etkisinin İncelenmesi / Investigation of the Relative Effect of Sahara Dust's Elemental Structure on Plants' Growth

    Directory of Open Access Journals (Sweden)

    Ayşe Nihal Yücekutlu

    2012-12-01

    Full Text Available Atmosferik taşınım sürecinde, kuzey Afrika orijinli Sahra çöl tozları mineral aerosol’ün en önemli kaynağıdır. Bu çalışmada, Sahra’dan getirilen çöl toprak örneklerinin bulut içerisindeki davranışlarının simüle edildiği laboratuvar koşullarında gerçekleştirilmesi ve alıcı ortam olarak çimlendirme kaplarında yetişen ekmeklik buğday (Triticum aestivum L. ve makarnalık buğday (Triticum durum L.’ ın bazı çeşitlerinin etkileri incelenmiştir. Kontrollü iklim odalarında yapılan buğday yetiştirme deneylerinde ışıklandırılmış Sahra çöl toprağı çözeltisi uygulamasının fide uzunluğu ve fotosentetik pigmentler [klorofil a, klorofil b, klorofil (a+b ve karotenoidler (c+x, mg ml-1 g Taze Ağırlık-1] üzerine olan etkileri, Hewitt besin çözeltisi uygulaması ile karşılaştırılabilir veya daha iyi sonuçlar verdiği istatistiksel yöntemlerle belirlenmiştir. Sahra çöl topraklarından besin çözeltisi elde edilmesi ve Hewitt besin çözeltisine alternatif olarak kullanılması ile kültür bitkileri üzerine olan besinsel etkisi ilk kez bu çalışmada ortaya konmuştur (Yücekutlu vd., 2011. Özellikle biyolojik olarak kullanıma hazır (çözünmüş eser element içeriklerinin yüksek oluşu nedeni ile Sahra çöl tozunun biyojeokimyasal süreçler vasıtası ile biyolojik sistemlere ve birincil üretime olan potansiyel katkısı buğday (Triticum sp. L. (Yücekutlu, 2011 ve pamuk (Gossypium hirsutum L. bitkileri üzerinde (Yücekutlu, 2010 çalışılmıştır. Sahra çöl tozu taşınımının, izleme (monitoring teknikleri Yücekutlu (2009, 2010, 2011, 2012 tarafından araştırılmıştır. Ülkemizi Güney Batı’dan-Doğu’ya, Güneyden-Kuzey’e kadar kat eden Sahra çöl tozlarının tarım-ekonomisine yapacağı katkı, eko-sistemlere besin tuzu sağlayan potansiyel bir kaynak olarak değerlendirilmelidir. Bu araştırma kapsamında, Sahra çöl tozlarının; hava

  11. Introduction to a field-theoretical treatment of neutrino oscillations

    Indian Academy of Sciences (India)

    P Stockinger

    2000-01-01

    We discuss the main features of the field-theoretical approach to neutrino oscillations where one combines neutrino production and detection processes in a single Feynman graph. The ‘oscillating neutrinos’ are represented by inner lines of this graph and appear in the calculation of the cross section of the total process as propagators of the neutrino mass eigenfields. We show that this field-theoretical approach leads to a transparent treatment of neutrino oscillations without ambiguities and provides the correct answer in cases where the standard approach fails.

  12. Distributional Dimension of Fractal Sets in Local Fields

    Institute of Scientific and Technical Information of China (English)

    Hua QIU; Wei Yi SU

    2008-01-01

    The distributional dimension of fractal sets in Rn has been systematically studied by Triebel by virtue of the theory of function spaces.In this paper,we .rst discuss some important properties about the B type spaces and the F type spaces on local .elds,then we give the de .nition of the distributional dimension dim D in local .elds and study the relations between distributional dimension and Hausdor .dimension.Moreover,the analysis expression of the Hausdor .dimension is given.Lastly,we de .ne the Fourier dimension in local .elds,and obtain the relations among all the three dimensions.

  13. Fractional equivalent Lagrangian densities for a fractional higher-order equation

    International Nuclear Information System (INIS)

    In this communication we show that the equivalent Lagrangian densities (ELDs) of a fractional higher-order nonlinear Schrödinger equation with stable soliton-like solutions can be related in a hitherto unknown way. This new relationship is described in terms of a new fractional operator that includes both left- and right-sided fractional derivatives. Using this operator it is possible to generate new ELDs that contain different fractional parts, in addition to the already known ELDs, which only differ by a sum of first-order partial derivatives of two arbitrary functions. (fast track communications)

  14. Les polymères issus du végétal : matériaux à propriétés spécifiques pour des applications ciblées en industrie plastique

    Directory of Open Access Journals (Sweden)

    Dubois P.

    2006-01-01

    Full Text Available Features of plant-based polymers with special applications in plastic fi eld. The new interest of plastic fi eld with renewable resources results from a global environmental respect awareness and the fossil depletion problem. In these perspectives, vegetable raw materials mainly polymers show attractive properties with great interests in plastic industry such as biodegradability, biocompatibility, selective permeability or variability in physico-mechanical properties. These properties have targeted applications in various fi elds specifi cally packaging, agricultural, textile, pharmaceutical, electronic or medical domains. This paper describes the different raw materials from plants and their valuable properties in relation with potential applications

  15. Parametric instabilities in magnetized bi-ion and dusty plasmas

    Indian Academy of Sciences (India)

    N F Cramer; M P Hertzberg; S V Vladimirov

    2003-12-01

    The excitation of low frequency modes of oscillations in a magnetized bi-ion or dusty plasma with parametric pumping of the magnetic field is analysed. The equation of motion governing the perturbed plasma is derived and parametrically excited transverse modes propagating along the magnetic field are found. With multiple ion species or charged dust present, a number of different circularly polarized modes can be excited. The stability of these modes is investigated as a function of the plasma parameters. The modulational instabilities of large amplitude normal modes, modified by the extra ion species or dust and propagating along the magnetic field, are also investigated.

  16. Black holes under external influence

    Indian Academy of Sciences (India)

    Jiří Bičák

    2000-10-01

    The work on black holes immersed in external fields is reviewed in both test-field approximation and within exact solutions. In particular we pay attention to the effect of the expulsion of the flux of external fields across charged and rotating black holes which are approaching extremal states. Recently this effect has been shown to occur for black hole solutions in string theory. We also discuss black holes surrounded by rings and disks and rotating black holes accelerated by strings.

  17. Star products from commutative string theory

    Indian Academy of Sciences (India)

    Sunil Mukhi

    2002-01-01

    A boundary-state computation is performed to obtain derivative corrections to the Chern–Simons coupling between a -brane and the RR gauge potential -3. We work to quadratic order in the gauge field strength , but all orders in derivatives. In a certain limit, which requires the presence of a constant -field background, it is found that these corrections neatly sum up into the *2 product of (commutative) gauge fields. The result is in agreement with a recent prediction using noncommutativity

  18. Bir henoch-schönlein purpurası komplikasyonu : stoma

    OpenAIRE

    Yıldız, Tülin

    2011-01-01

    Henoch Schönlein Purpurası (HSP) deri, böbrek, eklem ve gastrointestinal sistemi etkileyen ve immun kompleks aracılıgı ile olusan bir lökositoklastik veya hipersensitivite vaskülitidir. Esas olarak çocukluk çagı hastalıgıdır. Prognoz genellikle iyidir; ancak siddetli gastrointestinal ve renal bulguları olan hastaların dikkatle tedavi edilmesi ve izlenmesi gerekir. Bazı durumlar ise, hastalık sonucu stoma açılmasını gerektirebilir. Olgumuz, HSP tanısı ile servise kabul edildikten k...

  19. Paleosismolojik çalışmalarda TL/OSL ve ESR yöntemlerinin kullanılması: Kütahya-Simav ve Kuzey Anadolu fay hattı

    OpenAIRE

    ŞAHİNER, Eren

    2015-01-01

    Termolüminesans (TL), Optik Uyarmalı Lüminesans (OSL) ve Elektron Spin Rezonans (ESR) yöntemleri
    (a) iyonize radyasyon dozimetrisi (b) retrospektif dozimetri  ve arkeolojik/jeolojik örneklerin yaş tayini (c)
    arkeolojik tarihi eserlerin gerçekliğinin test edilmesi gibi temel araştırma alanlarında uygulamalara
    sahiptir. Bu yöntemler kullanarak yaş tayini, kristal yapılardaki kusur ve düzensizliklerde, çevredeki
    düşük seviyedeki doğal rad...

  20. Investigation of the surface resistance of superconducting materials

    CERN Document Server

    Junginger, T

    2012-01-01

    In particle accelerators superconducting RF cavities are widely used to achieve high accelerating gradients and low losses. Power consumption is proportional to the surface resistance RS which depends on a number of external parameters, including frequency, temperature, magnetic and electric eld. Presently, there is no widely accepted model describing the increase of Rs with applied eld. In the frame of this project the 400MHz Quadrupole Resonator has been extended to 800 and 1200MHz to study surface resistance and intrinsic critical RF magnetic eld of superconducting samples over a wide parameter range, establishing it as a world-wide unique test facility for superconducting materials. Dierent samples were studied and it was shown that RS is mainly caused by the RF electric eld in the case of strongly oxidized surfaces. This can be explained by interface tunnel exchange of electrons between the superconductor and localized states in adjacent oxides. For well prepared surfaces, however, the majority of the di...

  1. Future developments and applications of nitrogen-bearing steels and stainless steels

    Indian Academy of Sciences (India)

    J Foct

    2003-06-01

    After considerations related with the global frame of the demand of society in the field of materials and some recalling of basic properties and principles of nitrogen alloying, possible future developments are listed and discussed.

  2. Viscosity and Vorticity in Reduced Magneto-Hydrodynamics

    Energy Technology Data Exchange (ETDEWEB)

    Joseph, Ilon [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

    2015-08-12

    Magneto-hydrodynamics (MHD) critically relies on viscous forces in order for an accurate determination of the electric eld. For each charged particle species, the Braginskii viscous tensor for a magnetized plasma has the decomposition into matrices with special symmetries.

  3. Magnetic cooling provides energy savings and environmental improvements

    DEFF Research Database (Denmark)

    Krogh-Jeppesen, K.

    2007-01-01

    Magnetic cooling exploits the fact that when a magnetic material is magnetised, heat is produced. Conversely, when the magnetic fi eld is again removed, the substance becomes cold. This can be used to make effi cient and environmentally friendlyrefrigerators...

  4. One-dimensional thermo-visco-plastic processes with hysteresis and phase transitions

    Czech Academy of Sciences Publication Activity Database

    Krejčí, Pavel; Sprekels, J.; Stefanelli, U.

    2003-01-01

    Roč. 13, - (2003), s. 695-712. ISSN 1343-4373 Keywords : Phase- eld systems * phase transitions * hysteresis operators Subject RIV: BA - General Mathematics http://www.wias-berlin.de/preprint/702/wias_preprints_702.pdf

  5. Plasma Processes : Sheath and plasma parameters in a magnetized plasma system

    Indian Academy of Sciences (India)

    Bornali Singha; A Sharma; J Chutia

    2000-11-01

    The variation of electron temperature and plasma density in a magnetized 2 plasma is studied experimentally in presence of a grid placed at the middle of the system. Plasma leaks through the negatively biased grid from the source region into the diffused region. It is observed that the electron temperature increases with the magnetic field in the diffused region whereas it decreases in the source region of the system for a constant grid biasing voltage. Also, investigation is done to see the change of electron temperature with grid biasing voltage for a constant magnetic field. This is accompanied by the study of the variation of sheath structure across the grid for different magnetic field and grid biasing voltage as well. It reveals that with increasing magnetic field and negative grid biasing voltage, the sheath thickness expands.

  6. ADVANCES IN ORGANIC, BIOORGANIC AND NATURAL PRODUCTS CHEMISTRY IN THE INSTITUTE OF CHEMISTRY OF THE ACADEMY OF SCIENCES OF MOLDOVA

    OpenAIRE

    Vlad, Pavel F.; Fliur Z. Macaev

    2009-01-01

    This overview deals with the advances in the investigation in the fi eld of organic, bioorganic and naturalproducts chemistry as well as the biologically active compounds in the Institute of Chemistry of the Academy of Sciences of Moldova.

  7. Announcing the 2016 Pharmaceuticals Travel Award for Young Investigators

    Directory of Open Access Journals (Sweden)

    Jean Jacques Vanden Eynde

    2016-06-01

    Full Text Available For the first time in its short history, our journal is able, this year, to support a young researcher in the field of medicinal chemistry by offering a travel grant of 800 CHF.[...

  8. Effect of extended line defects on thermal conduction of carbon nanotubes: analyzing phonon structures by band unfolding

    International Nuclear Information System (INIS)

    We theoretically investigate the effect of extended line defects (ELDs) on thermal transport properties of carbon nanotubes (CNTs) using nonequilibrium Green’s function method. Our study shows that the thermal conductance of CNTs with ELDs can be 25% lower than that of pristine CNTs. By extending the application of the recently developed unfolding method for electronic structures to phonon spectra, we find that the unfolded phonon bands of defected CNTs are split with obvious gap opening, leading to lower phonon transmissions. Further phonon local density of states analysis reveals that the change of bonding configuration near the ELD in defected CNTs can tail the degree of phonon localization. Our results indicate that introducing ELDs might be an efficient way to control thermal conduction of CNTs. The extended unfolding method for phonon systems, found to be efficient in this work, is expected to be applicable to other systems with densely folded phonon bands. (paper)

  9. Critical current densities in superconducting materials

    Indian Academy of Sciences (India)

    P Chaddah

    2003-02-01

    We discuss recent research in the area of critical current densities $(J_C)$ in superconductors. This shall cover recent work on newly discovered superconductors, as well as on the magnetic-field dependence of $J_C$.

  10. Propagation of waves in a multicomponent plasma having charged dust particles

    Indian Academy of Sciences (India)

    Sukanya Burman; A Roy Chowdhury; S N Paul

    2001-06-01

    Propagation of both low and high frequency waves in a plasma consisting of electrons, ions, positrons and charged dust particles have been theoretically studied. The characteristics of dust acoustic wave propagating through the plasma has been analysed and the dispersion relation deduced is a generalization of that obtained by previous authors. It is found that nonlinear localization of high frequency electromagnetic field in such a plasma generates magnetic field. This magnetic field is seen to depend on the temperatures of electrons and positrons and also on their equilibrium density ratio. It is suggested that the present model would be applicable to find the magnetic field generation in space plasma.

  11. The validity and reliability of motivational factors scale and the benefits scale of participating in trekking activities for Turkish populationBireyleri doğa yürüyüşü yapmaya motive eden faktörler ölçeği ve bu faaliyetlere katılarak elde edilen faydalar ölçeğinin Türk popülasyonu için geçerlilik güvenirlilik çalışması

    OpenAIRE

    Faik Ardahan; Mehmet Mert

    2013-01-01

    There are two main aims of this study; first; define the validity and reliability of “the Motivational Factors Scale for participating in recreational Trekking activities -MFST”; and “the Benefits Scale of participating in Trekking activities - BST”; second; find out the impacts of MFST on BST.As a result, the Motivational Factors Scale for participating recreational Trekking activities, the Benefits Scale of participating in Trekking activities were reliable and valid in the estimation of th...

  12. Computational aeroacoustic study of a landing gear

    OpenAIRE

    Khanal, B.; Knowles, K.; Saddington, Alistair J.; Obayashi, S

    2009-01-01

    Computational study of a single wheel landing gear con guration was completed to understand the noise source and it's nature. The ow eld visualisation showed the present of large structural shedding in the wake side of the the landing gear wheel. These large structures were responsible for the low frequency noise. Spectral peaks at frequencies lower than 200 Hz were found to exist from the analysis of the frequency content of the pressure signals at far eld. These low freque...

  13. Half-monopoles in the Yang–Mills theory

    Indian Academy of Sciences (India)

    E Harikumar; Indrajit Mitra; H S Sharatchandra

    2003-11-01

    Using a gauge-invariant characterization of monopoles defined via their centres, we investigate the generic topological field pattern for the three-dimensional Yang–Mills theory. This leads to field patterns with one-half winding number. After presenting the main features through the simpler case of half-vortices, we consider half-monopoles in detail.

  14. Preparation and characterization of MgB2 superconductor

    Indian Academy of Sciences (India)

    Shashwati Sen; D K Aswal; Ajay Singh; T V Chandrasekhar Rao; K P Muthe; J C Vyas; L C Gupta; S K Gupta; V C Sahni

    2002-05-01

    The MgB2 superconductor, synthesized using solid-state and liquid-phase sintering methods, have been characterized for various properties. The upper critical field, irreversibility line and critical current density have been determined using magnetization data. The current–voltage characteristics recorded under an applied magnetic field revealed the existence of vortex glass transition. The surface analysis using X-ray photoelectron spectroscopy shows that MgB2 is sensitive to atmospheric degradation.

  15. Mirrorless lasers

    Indian Academy of Sciences (India)

    Hema Ramachandran

    2002-02-01

    Experimental realization of mirrorless lasers in the last decade have resulted in hectic activity in this field, due to their novelty, simplicity and ruggedness and their great potential for application. In this article, I will review the various developments in this field in roughly chronological order, and discuss some possible applications of this exciting phenomenon, also termed as ‘random lasing’.

  16. AI Magazine Poster: The AI Landscape

    OpenAIRE

    Leake, David B.; Indiana University; Gary, James; Giacomo Marchesi Design

    2008-01-01

    AI's first half-century produced great accomplishments, but many of the field's successes have remained unsung beyond the AI community. AI's integration into the fabric of everyday life has had tremendous impact, but the public may not recognize its many roles or understand its fundamental goals. In response, AI Magazine has developed a poster to help educate students, faculty, and the public about AI and to spur them to find out more about the field.

  17. Deformation measurements of blast loaded plates using digital image correlation and high-speed photography

    Directory of Open Access Journals (Sweden)

    Ndambi J.M.

    2010-06-01

    Full Text Available This paper presents a study on the behaviour of aluminium plates subject to close range blast loads. Measurement of the full out-of-plane displacement field is performed combining two high-speed cameras in a stereoscopic set up and the digital image correlation technique. The measured displacement fields are compared to the calculated data using two different FEM codes. A good agreement has been found between both experimental and numerical data.

  18. Charged fluids with symmetries

    Indian Academy of Sciences (India)

    S D Maharaj; D B Lorthan

    2011-09-01

    We investigate the role of symmetries for charged perfect fluids by assuming that spacetime admits a conformal Killing vector. The existence of a conformal symmetry places restrictions on the model. It is possible to find a general relationship for the Lie derivative of the electromagnetic field along the integral curves of the conformal vector. The electromagnetic field is mapped conformally under particular conditions. The Maxwell equations place restrictions on the form of the proper charge density.

  19. Some new approaches to the study of the Earth's magnetic field reversals

    OpenAIRE

    Consolini, G.; De Michelis, P.

    2003-01-01

    Paleomagnetic studies clearly show that the polarity of the magnetic fi eld has been subject to reversals. It is generally assumed that polarity intervals are exponentially distributed. Here, the geomagnetic polarity reversal record, for the past 166 Ma, is analysed and a new approach to the study of the reversals is presented. In detail, the occurrence of 1/f-noise in the Power Spectral Density (PSD), relative to geomagnetic fi eld reversals, the existence of a Zipf's law...

  20. The longitudinal profile of CSF markers during external lumbar drainage in idiopathic normal pressure hydrocephalus

    OpenAIRE

    Tarnaris, Andrew; Toma, Ahmed; Chapman, Miles D; Petzold, A.; Kitchen, Neil D; Keir, Geoffrey; Watkins, Laurence D

    2009-01-01

    Abstract External lumbar drainage (ELD) is known as a good predictor of favourable outcome in shunting patients suffering from idiopathic normal pressure hydrocephalus (iNPH). To date there has been no study to investigate the changes occurring in the CSF composition of patients undergoing (ELD). Methods: Eleven patients suffering from iNPH participated in a research study to quantify any improvement in their clinical symptoms, for which a lumbar drain (LD) was inserted ...

  1. Bianchi type-V string cosmological models in general relativity

    Indian Academy of Sciences (India)

    Anil Kumar Yadav; Vineet Kumar Yadav; Lallan Yadav

    2011-04-01

    Bianchi type-V string cosmological models in general relativity are investigated. To get the exact solution of Einstein’s field equations, we have taken some scale transformations used by Camci et al [Astrophys. Space Sci. 275, 391 (2001)]. It is shown that Einstein’s field equations are solvable for any arbitrary cosmic scale function. Solutions for particular forms of cosmic scale functions are also obtained. Some physical and geometrical aspects of the models are discussed.

  2. О разработке и применении концентраторов магнитного потока для устройств микромагнитоэлектроники

    OpenAIRE

    Прокошин, В.И.; ЯРМОЛОВИЧ В.А.; Драпезо, А. П.

    2014-01-01

    This paper presents the results of research into the development, manufacture, and use of primary magnetic flux concentrators in measurements of weak magnetic fields, including spacecraft instrumentation for the use in small spacecrafts. Owing to the phenomenon of magnetic flux concentration by ferromagnetic devices, the sensors for measuring weak magnetic fields with high magnetic sensitivity exceeding the statistical value for the conventional Hall-effect transducer by 2–3 times, and without de...

  3. Economic load dispatch using improved gravitational search algorithm

    Science.gov (United States)

    Huang, Yu; Wang, Jia-rong; Guo, Feng

    2016-03-01

    This paper presents an improved gravitational search algorithm(IGSA) to solve the economic load dispatch(ELD) problem. In order to avoid the local optimum phenomenon, mutation processing is applied to the GSA. The IGSA is applied to solve the economic load dispatch problems with the valve point effects, which has 13 generators and a load demand of 2520 MW. Calculation results show that the algorithm in this paper can deal with the ELD problems with high stability.

  4. 老年类风湿关节炎临床特点分析

    Institute of Scientific and Technical Information of China (English)

    陈海娟; 郭琳

    2011-01-01

    @@ 为探讨老年类风湿关节炎(eldly rheumatoid arthritis,ERA)的临床特点,收集我院ERA患者33例,与同期非老年类风湿关节炎(non-eldly rheumatoid arthritis,NERA)患者80例的临床资料进行对照分析.

  5. Spectrophotometric Study of the Effect of a Magnetic Field on Human Blood Components

    Science.gov (United States)

    Kazin, V. N.; Makaryin, V. V.; Guzov, E. A.; Moshareva, V. A.; Kovchiy, K. A.

    2016-07-01

    We have used electronic spectroscopy and optical aggregometry to study the effect of a constant magnetic fi eld on blood components. Based on the absorption spectra, we observe a decrease in optical density for both plasma and whole blood samples. Based on the results of platelet aggregation studies, we identifi ed two groups of test subjects with opposite types of responses to exposure to a magnetic fi eld. The observed behavior is probably associated with changes in the spatial structure of the proteins.

  6. Non-linear high-frequency waves in the magnetosphere

    Indian Academy of Sciences (India)

    S Moolla; R Bharuthram; S V Singh; G S Lakhina

    2003-12-01

    Using fluid theory, a set of equations is derived for non-linear high-frequency waves propagating oblique to an external magnetic field in a three-component plasma consisting of hot electrons, cold electrons and cold ions. For parameters typical of the Earth’s magnetosphere, numerical solutions of the governing equations yield sinusoidal, sawtooth or bipolar wave-forms for the electric field.

  7. Information management e ricerca scientifica : coordinate per documentare l'aerospazio. Tavola rotonda Information management nel settore aerospaziale [Information management nel settore aerospaziale. Atti del seminario svoltosi al CIRA - Centro Italiano Ricerche Aerospaziali. Capua, 22 marzo 2002

    OpenAIRE

    Monti, Rodolfo

    2002-01-01

    Round table discussants: Ferruccio Diozzi, CIRA; John Harrington, Cranfi eld University; Roy Kitley, British Library; Rodolfo Monti, Università degli Studi di Napoli "Federico II"; Paul Needham, Cranfi eld University; Mauro Russo, Alenia Aeronautica SpA; Roberto Stalio, ASI; Ennio Tarantola, Università degli Studi "Roma Tre". The aim of the round table is to discuss different approaches in the information management in the aerospace field. These approaches come from both academic and in...

  8. Acoustic Invisibility in Turbulent Fluids

    OpenAIRE

    Huang, Xun; Zhong, Siyang

    2013-01-01

    Acoustic invisibility of a cloaking system in turbulent uids has been poorly understood. Here we show that evident scattering would appear in turbulent wakes owing to the submergence of a classical cloaking device. The inherent mechanism is explained using our theoretical model, which eventually inspires us to develop an optimized cloaking approach. Both the near- and far-?eld scatted ?elds are examined using high order computational acoustic methods. The remarkably low scattering demonstrate...

  9. Associative learning and perceptual style: Are associated events perceived analytically or as a whole?

    OpenAIRE

    Tsakanikos, Elias

    2006-01-01

    The present study examined whether the formation of associations is affected by individual differences in perceptual style (analytic vs. holistic). Ninety undergraduate students were tested on their ability to associate concurrent events (i.e. word—colour) and were assessed on measures of field dependence and intelligence. The analysis revealed that analytic perceptual style (field independence) was associated with better performance on associative learning, and that this relationship was retain...

  10. Theory of slow light excitation in 1D photonic crystals

    OpenAIRE

    Yudistira, D.; Marpaung, D.A.I.; Handoyo, H.P.; Hoekstra, H.J.W.M.; Hammer, M; Tjia, M.O.; Iskandar, A.A.

    2004-01-01

    Slow light (SL) states corresponding to wavelength regions near the bandgap edge of grated structures are known to show strong eld enhancement. Such states may be excited efciently by well-optimised adiabatic transitions in grating structures, e.g., by slowly turning on the modulation depth. To study adiabatic excitations, a detailed investigation in 1D is performed to obtain insight into the relation between the device parameters and properties like eld enhancement and modal reection. The re...

  11. Collision Avoidance with Potential Fields Based on Parallel Processing of 3D-Point Cloud Data on the GPU

    OpenAIRE

    Kaldestad, Knut B.; Haddadin, Sami; Belder, Rico; Hovland, Geir; Anisi, David A.

    2014-01-01

    In this paper we present an experimental study on real-time collision avoidance with potential fields that are based on 3D point cloud data and processed on the Graphics Processing Unit (GPU). The virtual forces from the potential fields serve two purposes. First, they are used for changing the reference trajectory. Second they are projected to and applied on torque control level for generating according nullspace behavior together with a Cartesian impedance main control ...

  12. Habitat Selection by Eld’s Deer following Relocation to a Patchy Landscape

    OpenAIRE

    Duo Pan; Yan-Ling Song; Zhi-Gao Zeng; Bravery, Benjamin D.

    2014-01-01

    An emerging issue in wildlife conservation is the re-establishment of viable populations of endangered species in suitable habitats. Here, we studied habitat selection by a population of Hainan Eld's deer (Cervus eldi) relocated to a patchy landscape of farmland and forest. Hainan Eld's deer were pushed to the brink of extinction in the 1970s, but their population expanded rapidly from 26 to more than 1000 individuals by 2003 through effective reserve protection. As part of a wider relocation...

  13. 伐らない焼畑--カメルーン東南部の熱帯雨林帯におけるカカオ栽培の受容にみられる変化と持続 (特集 地域研究の前線)

    OpenAIRE

    四方, 篝

    2007-01-01

    Cacao (Theobroma cacao L.) is an important cash crop for small-scale Bangandou farmers living in forested area of Cameroon. In this region, cacao is usually grown under the shade in fi elds of selectively thinned natural forestland. This study aims to clarify how the cacao-growing system has been integrated into the Bangandou's subsistence slash-and-burn agriculture and examines its role in their livelihood. Bangandou people favor establishing new cacao fi elds in primary forests or old cacao...

  14. Pulsating variable stars as tracers of galactic structure and interaction mechanisms

    OpenAIRE

    Moretti, Maria Ida

    2012-01-01

    My PhD project has been focused on the study of the pulsating variable stars in two ultra-faint dwarf spheroidal satellites of the Milky Way, namely, Leo IV and Hercules; and in two fields of the Large Magellanic Cloud (namely, the Gaia South Ecliptic Pole calibration field, and the 30 Doradus region) that were repeatedly observed in the KS band by the VISTA Magellanic Cloud (VMC, PI M.R. Cioni) survey of the Magellanic System.

  15. Dynamical properties of a two-level system with arbitrary nonlinearities

    Indian Academy of Sciences (India)

    Mahmoud Abdel-Aty; Nour A Zidan

    2003-09-01

    We investigate some aspects of a generalized JC-model which include arbitrary forms of non-linearities of both the field and the intensity-dependent atom–field coupling. We obtain an exactly analytic solution of the model, by means of which we identify and numerically demonstrate the region of parameters where significantly large entanglement can be obtained.

  16. Field theoretic calculation of energy cascade rates in non-helical magnetohydrodynamic turbulence

    Indian Academy of Sciences (India)

    Mahendra K Verma

    2003-09-01

    Energy cascade rates and Kolmogorov’s constant for non-helical steady magnetohydrodynamic turbulence have been calculated by solving the flux equations to the first order in perturbation. For zero cross helicity and space dimension = 3, magnetic energy cascades from large length-scales to small length-scales (forward cascade). In addition, there are energy fluxes from large-scale magnetic field to small-scale velocity field, large-scale velocity field to small-scale magnetic field, and large-scale velocity field to large-scale magnetic field. Kolmogorov’s constant for magnetohydrodynamics is approximately equal to that for fluid turbulence (≈ 1.6) for Alfvén ratio 0.5 ≤ A ≤ ∞. For higher space-dimensions, the energy fluxes are qualitatively similar, and Kolmogorov’s constant varies as 1/3. For the normalized cross helicity c → 1, the cascade rates are proportional to (1-c)/(1+c), and the Kolmogorov’s constants vary significantly with c.

  17. OH AND CN ZEEMAN OBSERVATIONS OF MAGNETIC FIELDS IN MOLECULAR CLOUDS

    Directory of Open Access Journals (Sweden)

    R. M. Crutcher

    2009-01-01

    Full Text Available Observations of the Zeeman e ect in OH and CN provide valuable information about magnetic eld strengths and directions in molecular clouds in the density range 103 < n(cm-3 < 106 that these species sample. These data make it possible to test predictions of weak eld, turbulence driven star formation and strong eld, ambipolar di usion driven star formation. Here we discuss exactly what information Zeeman observations provide and how those data may be analyzed to yield meaningful results. The data imply that the mean mass-to-ux ratio in molecular cores is - 2 - 3 times critical, which means that magnetic elds are generally not strong enough to prevent gravitational collapse. However, this information about mean eld strengths is not de nitive in excluding one or the other of the two models of star formation. Present data do suggest that magnetic elds play a very signi cant role in the evolution of molecular clouds and in the star formation process. Finally, very preliminary results are discussed from two in-progress studies; these studies have the potential to be signi cantly more de nitive in testing the predictions of star formation theory, and perhaps in discriminating between the two theories.

  18. High-field thermal transports properties of REBCO coated conductors

    CERN Document Server

    Bonura, M

    2015-01-01

    The use of REBCO coated conductors is envisaged for many applications, extending from power cables to high-field magnets. Whatever the case, thermal properties of REBCO tapes play a key role for the stability of superconducting devices. In this work, we present the first study on the longitudinal thermal conductivity (k) of REBCO coated conductors in magnetic fields up to 19 T applied both parallelly and perpendicularly to the thermal-current direction. Copper-stabilized tapes from six industrial manufacturers have been investigated. We show that zero-field k of coated conductors can be calculated with an accuracy of ‡ 15% from the residual resistivity ratio of the stabilizer and the Cu/non-Cu ratio. Measurements performed at high fields have allowed us to evaluate the consistency of the procedures generally used for estimating in-field k in the framework of the Wiedemann-Franz law from an electrical characterization of the materials. In-field data are intended to provide primary ingredients for the ...

  19. Tectonomagnetic study in the seismoactive area of Narmada–Son lineament, central India: Preliminary results on repeat field observations

    Indian Academy of Sciences (India)

    S Y Waghmare; S D Pimprikar; P B Gawali; L Carlo; A G Patil

    2009-06-01

    Repeated measurements of the total geomagnetic field on the five profiles have revealed a picture of stress-induced tectonomagnetic effect in the form of secular variation of the total geomagnetic field in the tectonically and seismically active area of Jabalpur and adjoining areas of the Narmada-Son lineament (NSL),central India.For this experiment,a reference base station was established within the study area at Jabalpur.Using proton precession magnetometers with a sensitivity of 0.1 nT, simultaneous measurements of total geomagnetic field were made annually at the base and all field stations.Five cycles of repeated observations have been performed between 2003 and 2007.For data analysis,a difference method has been applied and the residuals have been calculated as secular variations of the total geomagnetic field with values ranging from ± 0.1nT to about > ± 14.6nT/yr over the different stations.The anomalies in secular variation of the total geomagnetic field may be related to anomalous accumulation of tectonic stresses and tensions on the deep fault zones and crustal blocks due to recent geodynamic processes and active geological inhomogeneities in the NSL.

  20. Field theoretic calculation of energy cascade rates in non-helical magnetohydrodynamic turbulence

    Indian Academy of Sciences (India)

    Mahendra K Verma

    2004-06-01

    Energy cascade rates and Kolmogorov’s constant for non-helical steady magnetohydrodynamic turbulence have been calculated by solving the flux equations to the first order in perturbation. For zero cross helicity and space dimension $d = 3$, magnetic energy cascades from large length-scales to small length-scales (forward cascade). In addition, there are energy fluxes from large-scale magnetic field to small-scale velocity field, large-scale velocity field to small-scale magnetic field, and large-scale velocity field to large-scale magnetic field. Kolmogorov’s constant for magnetohydrodynamics is approximately equal to that for fluid turbulence $(≈ 1.6)$ for Alfvén ratio $0.5≤ r_{A}≤ ∞$. For higher space-dimensions, the energy fluxes are qualitatively similar, and Kolmogorov’s constant varies as $d^{1/3}$. For the normalized cross helicity $_{c}→ 1$, the cascade rates are proportional to $(1-_{c})/(1+_{c})$, and the Kolmogorov’s constants vary significantly with $_{c}$.

  1. Kent Modelleri ve Sürdürülebilir Kent Yönetimi Models of the City and the Sustainable Urban Management

    Directory of Open Access Journals (Sweden)

    Hüseyin DURGUTER

    2012-09-01

    ından itibaren ekonomik, sosyal, politik etmenlerden dolayı etkilenmiş ve değişime uğramıştır. Günümüz bilgi ve enformasyon çağında ise kentler; insanoğluna yetersiz gelmekte, ihtiyaçlarını ve güvenliğini sağlayamamaktadır. Kentlerin geçmiş nesillerden devralınıp, bugünkü sakinlerine kaliteli bir yaşam tarzı sunmaları ve gelecek nesillere de kullanılabilir şekilde teslim edilmesi önem arzetmektedir. Bu ise kentlerin inşasının ve yönetiminin insan ve çevre odaklı olmak üzere köklü değişim ve dönüşümünü gerektirir. Mevcut bulunan şehirler insanların gündelik ve sosyal ihtiyaçlarını karşılamaktan uzak kalmaktadır. Her şeyin insanın kaliteli bir yaşam sürmesi için kurgulandığı günümüz dünyasında kent şekilleri de değişmektedir. Bu durum ise gelişen ve dönüşen dünyamızda yeni şehir anlayışları ve modelleri ortaya çıkarmıştır. Bilgi ve enformasyon çağının gereklerine uygun ve ihtiyaçlarını karşılayan yeni kent modelleri geliştirmiştir. Varolan kentler ya ihtiyaca cevap verememekte, ya eskimekte ya da insanların hayatını kargaşaya sürüklemektedir. Kentler dönüşüm projeleriyle yaşanabilir mekanlar haline getirilmeye, kaliteli bir yaşam imkanı verebilecek duruma getirilmeye çalışılmaktadır. Türkiye’ de belediyelerin büyük bir bölümü küçük ölçekli ve kırsal karakterlidir. Bu yerleşim birimlerinin kırsal özelliklerinden kurtulamadığı, dolayısıyla her belediye biriminin gerçek anlamda “kent” olarak kabul edilemeyeceği vurgulanmaktadır. Sürdürülebilir kent yönetimi açısından Belediye yönetimlerinin, Sivil Toplum Kuruluşları aracılığı ile kent insanını karar sürecine katmaları hem katılımcılık ilkesinin gerçekleşmesine, hem de doğru kararlar alma şansına sahip olunmasına katkı sağlayacaktır. Bununla birlikte yönetimler, alınan kararların uygulanması aşamasında gerekli destekleri daha başlangıçta elde etme

  2. Comment on magnetism and superconductivity in rutheno cuprates: RuSr2GdCu2O8 and RuSr2Gd1.5Ce0.5Cu2O10

    Indian Academy of Sciences (India)

    V P S Awana; M Karppinen; H Yamauchi

    2002-05-01

    Both RuSr2GdCu2O8- (Ru-1212) and RuSr2Gd1.5Ce0.5Cu2O10- (Ru-1222) exhibits magnetism and superconductivity, as seen by magnetization vs. temperature behavior measured in 5 Oe field. Zero-field-cooled (ZFC) and field-cooled (FC) magnetization data show branching at around 140 K and 100 K with a cusp at 135 K and 80 K and a diamagnetic transition around 20 K and 30 K in the ZFC part, for Ru-1212 and Ru-1222, respectively. The isothermal magnetization possesses a non-linear contribution due to a ferromagnetic component at low temperatures below 50 K for both samples. The resistance vs. temperature behavior of the samples in applied fields of 0, 3 and 7 T confirmed superconductivity, with a different type of broadening of the superconductivity transition under magnetic fields for Ru-1212 from that known for conventional high-c superconductors. The magnetoresistance (MR) is negative above the Ru magnetic ordering temperature at 135 K. Below the Ru magnetic ordering temperature, MR displays a positive peak at low fields and becomes negative at higher fields for Ru-1212. For Ru-1222, MR remains negative both above and below the ordering temperature. A maximum of 2% is observed for the negative MR value at the Ru magnetic ordering temperature. An electron diffraction pattern obtained for the Ru-1212 sample shows two types of superstructure: one has a weak spot at the centre of the - rectangle, and the other only along the direction. Interestingly, Ru-1222 shows only clean - and - planes, without any superstructures.

  3. Energy fluxes in helical magnetohydrodynamics and dynamo action

    Indian Academy of Sciences (India)

    Mahendra K Verma

    2003-10-01

    Renormalized viscosity, renormalized resistivity, and various energy fluxes are calculated for helical magnetohydrodynamics using perturbative field theory. The calculation is of first-order in perturbation. Kinetic and magnetic helicities do not affect the renormalized parameters, but they induce an inverse cascade of magnetic energy. The sources for the large-scale magnetic field have been shown to be (1) energy flux from large-scale velocity field to large-scale magnetic field arising due to non-helical interactions and (2) inverse energy flux of magnetic energy caused by helical interactions. Based on our flux results, a primitive model for galactic dynamo has been constructed. Our calculations yield dynamo time-scale for a typical galaxy to be of the order of 108 years. Our field-theoretic calculations also reveal that the flux of magnetic helicity is backward, consistent with the earlier observations based on absolute equilibrium theory.

  4. Variational method for objective analysis of scalar variable and its derivative

    Indian Academy of Sciences (India)

    S G Narkhedkar; S K Sinha

    2008-10-01

    In this study real time data have been used to compare the standard and triangle method by performing the objective analysis of mean sea level pressure.In the standard method,derivative fields are obtained from the grid point data using finite difference scheme whereas in the triangle method,a set of non-overlapping triangles are formed from the observations and the scalar and the spatial derivatives are computed directly at the centroid of each of the non-overlapping triangles.These scalars and their derivatives are then mapped to uniform grids by using the standard method.It has been found that objectively analysed scalar field obtained using standard method is superior to the scalar field derived by the triangle method,whereas the derivative fields produced by triangle method are superior to the derivative fields produced using standard method. A variational objective analysis scheme has been developed and an experiment has been carried out with depression case of June (11 –15)2004.It is found that the new scheme (variational)is able to extract the better parts of both triangle and standard methods.The results of this study will be useful in carrying out diagnostic calculations that involve derivative estimates.

  5. Investigating the vortex melting phenomenon in BSCCO crystals using magneto-optical imaging technique

    Indian Academy of Sciences (India)

    A Soibel; S S Banerjee; Y Myasoedov; M L Rappaport; E Zeldov; S Ooi; T Tamegai

    2002-05-01

    Using a novel differential magneto-optical imaging technique we investigate the phenomenon of vortex lattice melting in crystals of Bi2Sr2CaCu2O8 (BSCCO). The images of melting reveal complex patterns in the formation and evolution of the vortex solid–liquid interface with varying field ()/temperature (). We believe that the complex melting patterns are due to a random distribution of material disorder/inhomogeneities across the sample, which create fluctuations in the local melting temperature or field value. To study the fluctuations in the local melting temperature/field, we have constructed maps of the melting landscape m(, ), viz., the melting temperature (m) at a given location () in the sample at a given field (). A study of these melting landscapes reveals an unexpected feature: the melting landscape is not fixed, but changes rather dramatically with varying field and temperature along the melting line. It is concluded that the changes in both the scale and shape of the landscape result from the competing contributions of different types of quenched disorder which have opposite effects on the local melting transition.

  6. Analysis of delayed convergence in the three-noded Timoshenko beam element using the function space approach

    Indian Academy of Sciences (India)

    Somenath Mukherjee; Gangan Prathap

    2002-10-01

    Despite satisfying only completeness and continuity requirements, elements often perform erroneously in a certain class of problems, called the locking situations, where they display spurious stress oscillations and enhanced stiffness properties. The function space approach that effectively substantiates the postulates of the field consistency paradigm is an efficient tool to reveal the fundamental cause of locking phenomena, and propose methods to eliminate this pathological problem. In this paper, we review the delayed convergence behaviour of three-noded Timoshenko beam elements using the rigorous function space approach. Explicit, closed form algebraic results for the element strains, stresses and errors have been derived using this method. The performance of the field-inconsistent three-noded Timoshenko beam element is compared with that of the field-inconsistent twonoded beam element. It is demonstrated that while the field-inconsistent two-noded linear element is prone to shear locking, the field-inconsistent three-noded element is not very vulnerable to this pathological problem, despite the resulting shear oscillations.

  7. QCD at finite temperature and density on the lattice

    Directory of Open Access Journals (Sweden)

    Lombardo M.-P.

    2010-10-01

    Full Text Available In the first lecture we briefly summarize the basics of field theory thermodynamics and critical phenomena. We then introduce the lattice gauge field theory approach to QCD at finite temperature and density, which is a non-perturbative scheme allowing first principle calculations using the QCD Lagrangian as a sole input. Some of the general concepts and idea introduced at the beginning are demonstrated by use of simple effective models of QCD. The second lecture is devoted to applications. We emphasize that current methods suffice to study the main phenomena at RHIC and LHC energies, and we discuss the ongoing theoretical efforts devoted to the solution of the sign problem which hampers the simulations of cold and dense matter. We conclude with short overview of the status of the field as of Summer 2008.

  8. On the advancements of conformal transformations and their associated symmetries in geometry and theoretical physics

    International Nuclear Information System (INIS)

    The historical developments of conformal transformations and symmetries are sketched: Their origin from stereographic projections of the globe, their blossoming in two dimensions within the eld of analytic complex functions, the generic role of transformations by reciprocal radii in dimensions higher than two and their linearization in terms of polyspherical coordinates by Darboux, Weyl's attempt to extend General Relativity, the slow rise of nite dimensional conformal transformations in classical eld theories and the problem of their interpretation, then since about 1970 the rapid spread of their acceptance for asymptotic and structural problems in quantum eld theories and beyond, up to the current AdS=CFT conjecture. The occasion for the present article: hundred years ago Bateman and Cunningham discovered the form invariance of Maxwell's equations for electromagnetism with respect to conformal space-time transformations. (orig.)

  9. İzmir Körfezi (Orta Ege Denizi)’ndeki Hamsi Engraulis encrasicolus (Linnaeus, 1758) Yumurta ve Larvalarının Bolluk ve Dağılımı

    OpenAIRE

    Burcu Taylan; Belgin Hoşsucu

    2014-01-01

    Bu çalışmada Hamsi Engraulis encrasicolus (Linnaeus, 1758) balığına ait yumurta ve larvaların İzmir Körfezi’nde 2013 yılındaki bolluk ve dağılımları incelenmiştir. Bu amaçla körfezde belirlenmiş 11 istasyondan mevsimsel olarak plankton çekimleri yapılmıştır. Hamsi yumurta ve larvaları kış mevsimi hariç ilkbahar, yaz ve sonbahar mevsimlerinde elde edilmiştir. Araştırma sonucunda toplam 6889 birey/m² yumurta, 3231 birey/m² larva elde edilmiştir. Elde edilen hamsi yumurtalarında minimum ve maksi...

  10. Vortex lattice transitions in YNi2B2C

    Indian Academy of Sciences (India)

    S J Levett; C D Dewhurst; D McK Paul

    2002-05-01

    We have performed extensive small-angle neutron scattering (SANS) diffraction studies of the vortex lattice in single crystal YNi2B2C for $B||c$. High-resolution SANS, combined with a field-oscillation vortex lattice preparation technique, allows us to separate Bragg scattered intensities from two orthogonal domains and accurately determine the unit cell angle, . The data suggest that upon increasing field there is a finite transition width where both low- and high-field distorted hexagonal vortex lattice phases, mutually rotated by 45°, coexist. The smooth variation of diffracted intensity from each phase through the transition corresponds to a redistribution of populations between the two types of domains.

  11. Applications of Novel X-Ray Imaging Modalities in Food Science

    DEFF Research Database (Denmark)

    Nielsen, Mikkel Schou

    science for understanding and designing food products. In both of these aspects, X-ray imaging methods such as radiography and computed tomography provide a non-destructive solution. However, since the conventional attenuation-based modality suers from poor contrast in soft matter materials, modalities......-eld imaging produces a contrast based on dierences in microstructure. In order to increase the use of X-ray imaging within food science, possible applications of X-ray phase-contrast and X-ray dark-eld imaging should be studied. To reach these applications, improvements are needed on several aspects of the...... possible applications of novel X-ray imaging modalities within food science. The first two studies mainly concern the image acquisition process of taking the image. Using dark-eld radiography, raw, frozen and defrosted fruit were distinguished, and structural changes in barley seeds during germination were...

  12. Supercooling across first-order phase transitions in vortex matter

    Indian Academy of Sciences (India)

    P Chaddah; S B Roy

    2000-06-01

    Hysteresis in cycling through first-order phase transitions in vortex matter, akin to the well-studied phenomenon of supercooling of water, has been discussed in literature. Hysteresis can be seen while varying either temperature or magnetic field (and thus the density of vortices). Our recent work on phase transitions with two control variables shows that the observable region of metastability of the supercooled phase would depend on the path followed in - space, and will be larger when is lowered at constant compared to the case when is lowered at constant . We discuss the effect of isothermal field variations on metastable supercooled states produced by field-cooling. This path dependence is not a priori applicable to metastability caused by reduced diffusivity or hindered kinetics.

  13. Prediction models for wind speed at turbine locations in a wind farm

    DEFF Research Database (Denmark)

    Knudsen, Torben; Bak, Thomas; Soltani, Mohsen

    2011-01-01

    standard turbine measurements such as rotor speed and power produced, an effective wind speed, which represents the wind field averaged over the rotor disc, is derived. The effective wind speed estimator is based on a continuous–discrete extended Kalman filter that takes advantage of nonlinear time varying......In wind farms, individual turbines disturb the wind field by generating wakes that influence other turbines in the farm. From a control point of view, there is an interest in dynamic optimization of the balance between fatigue and production, and an understanding of the relationship between turbines...... manifested through the wind field is hence required. This paper develops models for this relationship. The result is based on two new contributions: the first is related to the estimation of effective wind speeds, which serves as a basis for the second contribution to wind speed prediction models. Based on...

  14. Production Optimization of Oil Reservoirs

    DEFF Research Database (Denmark)

    Völcker, Carsten

    With an increasing demand for oil and diculties in nding new major oil elds, research on methods to improve oil recovery from existing elds is more necessary now than ever. The subject of this thesis is to construct ecient numerical methods for simulation and optimization of oil recovery with...... emphasis on optimal control of water ooding with the use of smartwell technology. We have implemented immiscible ow of water and oil in isothermal reservoirs with isotropic heterogenous permeability elds. We use the method of lines for solution of the partial differential equation (PDE) system that governs...... size control in order to minimize the computational cost per simulation. We implement a numerical method for nonlinear model predictive control (NMPC) along with smart-well technology to maximize the net present value (NPV) of an oil reservoir. The optimization is based on quasi-Newton sequential...

  15. Gravitational Jaynes–Cummings model beyond the rotating wave approximation

    Indian Academy of Sciences (India)

    M Mohammadi

    2012-05-01

    In this paper, the quantum properties of a two-level atom and the cavity-field in the Jaynes–Cummings model with the gravity beyond the rotating wave approximation are investigated. For this purpose, by solving the Schrödinger equation in the interaction picture, the evolving state of the system is found by which the influence of the counter-rotating terms on the dynamical behaviour of atomic population inversion and the probability distribution of the cavity-field as quantum properties is explored. The results in the atom–field system beyond the rotating wave approximation with the gravity show that the quantum properties are not completely suppressed under certain conditions.

  16. On the advancements of conformal transformations and their associated symmetries in geometry and theoretical physics

    Energy Technology Data Exchange (ETDEWEB)

    Kastrup, H.A. [Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Theory Group

    2008-08-15

    The historical developments of conformal transformations and symmetries are sketched: Their origin from stereographic projections of the globe, their blossoming in two dimensions within the eld of analytic complex functions, the generic role of transformations by reciprocal radii in dimensions higher than two and their linearization in terms of polyspherical coordinates by Darboux, Weyl's attempt to extend General Relativity, the slow rise of nite dimensional conformal transformations in classical eld theories and the problem of their interpretation, then since about 1970 the rapid spread of their acceptance for asymptotic and structural problems in quantum eld theories and beyond, up to the current AdS=CFT conjecture. The occasion for the present article: hundred years ago Bateman and Cunningham discovered the form invariance of Maxwell's equations for electromagnetism with respect to conformal space-time transformations. (orig.)

  17. Modeling of higher harmonics formation in medical ultrasound systems

    DEFF Research Database (Denmark)

    Taylor, Louise Kold; Schlaikjer, Malene; Jensen, Jørgen Arendt

    The pressure eld emitted from multi-element medical ultrasound transducers can be simulated with Field II in the linear regime. By expanding this program's application to the nonlinear regime, beamforming schemes can be studied under strong focusing and high pressure levels as well, providing a...... valuable tool for simulating ultrasound harmonic imaging. An extended version of Field II is obtained by means of operator splitting. The pressure eld is calculated by propagation of the eld from the transducer through a number of planes. Every plane serves as a virtual aperture for the next plane, and...... the approach is demonstrated by comparing results from simulations and measurements from a convex array transducer. The new simulation tool is capable of simulating the formation of higher harmonics in water on the acoustical axis. The generation of nonlinear higher harmonic components can be...

  18. Investigations and Applications of Field- and Photo-emitted Electron Beams from a Radio Frequency Gun

    Energy Technology Data Exchange (ETDEWEB)

    Panuganti, SriHarsha [Northern Illinois Univ., DeKalb, IL (United States)

    2015-08-01

    Production of quality electron bunches using e cient ways of generation is a crucial aspect of accelerator technology. Radio frequency electron guns are widely used to generate and rapidly accelerate electron beams to relativistic energies. In the current work, we primarily study the charge generation processes of photoemission and eld emission inside an RF gun installed at Fermilab's High Brightness Electron Source Laboratory (HBESL). Speci cally, we study and characterize second-order nonlinear photoemission from a Cesium Telluride (Cs2Te) semiconductor photocathode, and eld emission from carbon based cathodes including diamond eld emission array (DFEA) and carbon nanotube (CNT) cathodes located in the RF gun's cavity. Finally, we discuss the application experiments conducted at the facility to produce soft x-rays via inverse Compton scattering (ICS), and to generate uniformly lled ellipsoidal bunches and temporally shaped electron beams from the Cs2Te photocathode.

  19. Surface-grafted polymer-assisted electroless deposition of metals for flexible and stretchable electronics.

    Science.gov (United States)

    Liu, Xuqing; Zhou, Xuechang; Li, Yi; Zheng, Zijian

    2012-05-01

    Surface-grafted polymers, that is, ultrathin layers of polymer coating covalently tethered to a surface, can serve as a particularly promising nanoplatform for electroless deposition (ELD) of metal thin films and patterned structures. Such polymers consist of a large number of well-defined binding sites for highly efficient and selective uptake of ELD catalysts. Moreover, the polymer chains provide flexible 3D network structures to trap the electrolessly deposited metal particles, leading to strong metal-substrate adhesion. In the past decade, surface-grafted polymers have been demonstrated as efficient nanoplatforms for fabricating durable and high-performance metal coatings by ELD on plastic substrates for applications in flexible and stretchable electronics. This focus review summarizes these recent advances, with a particular focus on applications in polymeric flexible and stretchable substrates. An outlook on the future challenges and opportunities in this field is given at the end of this paper. PMID:22392811

  20. Bilingual Dictionaries for Communication in the Domain of Economics: Function-Based Translation Dictionaries

    DEFF Research Database (Denmark)

    Nielsen, Sandro

    2015-01-01

    elds in contrast to single-fi eld and sub-fi eld dictionaries. Furthermore, recent research shows that economic translation is not limited to terms so lexicographers who identify and analyse the needs of translators, usage situations and stages in translating economic texts will have a sound basis...... for designing their lexicographic tools. The function theory allows lexicographers to study these basics so that they can offer translation tools to the domain of economics. Dictionaries should include data about terms, their grammatical properties, and their combinatorial potential as well as language...... varieties such as British, American and international English to indicate syntactic options and restrictions on language use. Secondly, translators need to know the meaning of domain-specifi c terms to properly understand the differences in the structure of the domains in the cultures involved. Finally...

  1. Free convection effects and radiative heat transfer in MHD Stokes problem for the flow of dusty conducting fluid through porous medium

    Indian Academy of Sciences (India)

    Om Prakash; Devendra Kumar; Y K Dwivedi

    2012-03-01

    The present note deals with the effects of radiative heat transfer and free convection in MHD for a flow of an electrically conducting, incompressible, dusty viscous fluid past an impulsively started vertical non-conducting plate, under the influence of transversely applied magnetic field. The heat due to viscous dissipation and induced magnetic field is assumed to be negligible. The governing linear partial differential equations are solved by finite difference technique. The effects of various parameters (like radiation parameter , Prandtl number Pr, porosity parameter ) entering into the MHD Stokes problem for flow of dusty conducting fluid have been examined on the temperature field and velocity profile for both the dusty fluid and dust particles.

  2. Understanding fields using strings: A review

    Indian Academy of Sciences (India)

    Sunil Mukhi

    2000-04-01

    In addition to being a prime candidate for a fundamental unified theory of all interactions in nature, string theory provides a natural setting to understand gauge field theories. This is linked to the concept of ‘-branes’: extended, solitonic excitations of string theory which can be studied using techniques of string theory and which support gauge fields localized along their world-volumes. It follows that the techniques of string theory can be very useful even for those particle physicists who are not specifically interested in unification and/or quantum gravity. In this talk I attempt to review how strings help us to understand fields. The discussion is restricted to 3+1 spacetime dimensions.

  3. Of light, of MEMS: Optical MEMS in telecommunications and beyond

    Indian Academy of Sciences (India)

    F Chollet; H B Liu; M Ashraf; B Thubthimthong; X M Zhang; G Hegde; A Asundi; V M Murukeshan; A Q Liu

    2009-08-01

    The burst of the Internet bubble in 2000 has severely quenched the pace of development in the optical MEMS field. However, it is now clear that this field is again set to move forward as not only telecommunication but many other industries are benefiting from its application. We describe in this paper some of our latest achievements in the field, showing a new type of small scale optical switch based on integrated optics, a vibration/acceleration sensor using a veryshort external cavity laser and finally, the early development result of a nano-scale tunable photonic crystal that could be used for beam steering. The diversity of the applications we demonstrate, is a clear testimony that there is indeed ‘plenty of room at the bottom’—and particularly in the natural combination of Light and MEMS!

  4. Automatic crop row detection from UAV images

    DEFF Research Database (Denmark)

    Midtiby, Henrik; Rasmussen, Jesper

    Images from Unmanned Aerial Vehicles can provide information about the weed distribution in fields. A direct way is to quantify the amount of vegetation present in different areas of the field. The limitation of this approach is that it includes both crops and weeds in the reported num- bers. To get a...... considered weeds. We have used a Sugar beet field as a case for evaluating the proposed crop detection method. The suggested image processing consists of: 1) locating vegetation regions in the image by thresholding the excess green image derived from the orig- inal image, 2) calculate the Hough transform of...... the segmented image 3) determine the dominating crop row direction by analysing output from the Hough transform and 4) use the found crop row direction to locate crop rows....

  5. Relativistic Electrons in Electric Discharges

    DEFF Research Database (Denmark)

    Cinar, Deniz

    Thunderstorms generate bursts of X- and Gamma radiation. When observed from spacecraft, the bursts are referred to as “Terrestrial Gamma-ray Flashes” (TGFs). They are bremsstrahlung from energetic electrons accelerated in thunderstorm electric _elds. The TGFs were _rst observed in the 90ties at the...... time when also gigantic electric discharges were observed at 10-90 km altitude in the stratosphere and mesosphere, the so called “jets” and “sprites”, commonly referred to as “Transient Luminous Events” (TLEs). TGFs were _rst thought connected to TLEs, but later research has pointed to lightning...... have studied the electron acceleration and photon generation in a constant electric _eld under a variety of conditions. These include the energy and number of seed electrons, electric_eld and altitude. We found that the distributions of avalanche electrons and photons are insensitive to these...

  6. Chandrasekhar–Kendall functions in astrophysical dynamos

    Indian Academy of Sciences (India)

    Axel Brandenburg

    2011-07-01

    Some of the contributions of Chandrasekhar to the field of magnetohydrodynamics are highlighted. Particular emphasis is placed on the Chandrasekhar–Kendall functions that allow a decomposition of a vector field into right- and left-handed contributions. Magnetic energy spectra of both contributions are shown for a new set of helically forced simulations at resolutions higher than what has been available so far. For a forcing function with positive helicity, these simulations show a forward cascade of the right-handed contributions to the magnetic field and nonlocal inverse transfer for the left-handed contributions. The speed of inverse transfer is shown to decrease with increasing value of the magnetic Reynolds number.

  7. Forces between a partially coherent fluctuating source and a magnetodielectric particle

    CERN Document Server

    Auñon, Juan Miguel

    2013-01-01

    We address the forces exerted by the electromagnetic ?eld emitted by a planar uctuating source on dielectric particles that have arose much interest because of their recently shown magnetodielectric behavior. In this context, we analyze as a particular case the modi?cation of the Casimir and Van der Waals forces. We study the e?ect of the source coherence length as well as the interplay between the force from the radiated ?eld and that from the electric and magnetic dipoles induced on the particle. This allows a control of these interactions as well as of the weight and interference e?ects between the ?elds from both kinds of induced dipoles, in particular when large changes in their di?erential scattering cross section occur due to Kerker minimum forward or zero backward conditions; thus opening new paths to nanoparticle ensembling and manipulation. The influence of surface waves of the source is also studied.

  8. Tenth workshop on the algorithmic foundations of robotics (WAFR)

    CERN Document Server

    Lozano-Perez, Tomas; Roy, Nicholas; Rus, Daniela; Algorithmic foundations of robotics X

    2013-01-01

    Algorithms are a fundamental component of robotic systems. Robot algorithms process inputs from sensors that provide noisy and partial data, build geometric and physical models of the world, plan high-and low-level actions at different time horizons, and execute these actions on actuators with limited precision. The design and analysis of robot algorithms raise a unique combination of questions from many elds, including control theory, computational geometry and topology, geometrical and physical modeling, reasoning under uncertainty, probabilistic algorithms, game theory, and theoretical computer science. The Workshop on Algorithmic Foundations of Robotics (WAFR) is a single-track meeting of leading researchers in the eld of robot algorithms. Since its inception in 1994, WAFR has been held every other year, and has provided one of the premiere venues for the publication of some of the eld's most important and lasting contributions. This books contains the proceedings of the tenth WAFR, held on June 13{15 201...

  9. Velocity and turbulence at a wing-wall abutment

    Indian Academy of Sciences (India)

    Abdul Karim Barbhuiya; Subhasish Dey

    2004-02-01

    Experimental investigation of the 3D turbulent flow field around a 45° wing-wall abutment, resting on a rough rigid bed, is reported. The experiment was conducted in a laboratory flume using the Acoustic Doppler Velocimeter (ADV). Profiles of time-averaged velocity components, turbulent intensity components, turbulent kinetic energy and Reynolds stresses at different azimuthal planes are presented. Vector plots of flow fields at azimuthal and horizontal planes show the presence of a primary vortex associated with the downflow in the upstream side of the abutment and a wake vortex on the downstream side. The shear stresses acting on the bed around the abutment are estimated from the Reynolds stresses and velocity gradients. The data presented in this study would be useful to researchers for future development and comparison of theoretical models of flow fields around bridge abutments.

  10. Physicians' experiences with end-of-life decision-making: Survey in 6 European countries and Australia

    Directory of Open Access Journals (Sweden)

    Mortier Freddy

    2008-02-01

    Full Text Available Abstract Background In this study we investigated (a to what extent physicians have experience with performing a range of end-of-life decisions (ELDs, (b if they have no experience with performing an ELD, would they be willing to do so under certain conditions and (c which background characteristics are associated with having experience with/or being willing to make such ELDs. Methods An anonymous questionnaire was sent to 16,486 physicians from specialities in which death is common: Australia, Belgium, Denmark, Italy, the Netherlands, Sweden and Switzerland. Results The response rate differed between countries (39–68%. The experience of foregoing life-sustaining treatment ranged between 37% and 86%: intensifying the alleviation of pain or other symptoms while taking into account possible hastening of death between 57% and 95%, and experience with deep sedation until death between 12% and 46%. Receiving a request for hastening death differed between 34% and 71%, and intentionally hastening death on the explicit request of a patient between 1% and 56%. Conclusion There are differences between countries in experiences with ELDs, in willingness to perform ELDs and in receiving requests for euthanasia or physician-assisted suicide. Foregoing treatment and intensifying alleviation of pain and symptoms are practiced and accepted by most physicians in all countries. Physicians with training in palliative care are more inclined to perform ELDs, as are those who attend to higher numbers of terminal patients. Thus, this seems not to be only a matter of opportunity, but also a matter of attitude.

  11. Career concerns incentives: An experimental test

    DEFF Research Database (Denmark)

    Koch, Alexander; Morgenstern, Albrecht; Raab, Philippe

    2009-01-01

    Holmström's (1982/99) career concerns model has become a workhorse for analyzing agency issues in many elds. The underlying signal jamming argument requires players to use information in a Bayesian way, which is difficult to directly test with eld data: typically little is known about the...... information that individuals base their decisions on. Our laboratory experiment provides prima facie evidence: i) the signal jamming mechanism successfully creates incentives on the labor supply side; ii) decision errors take time to decrease; iii) while subjects’ average beliefs are remarkably consistent...

  12. ISSP Position Stand

    DEFF Research Database (Denmark)

    Ryba, Tatiana; Stambulova, Natalia; Si, Gangyan;

    2013-01-01

    The multicultural landscape of contemporary sport sets a challenge to rethink sport and exercise psychology research and practice through a culturally re␣exive lens. This ISSP Position Stand provides a rigorous synthesis and engagement with existing scholarship to outline a roadmap for future work...... in the ␣eld. The shift to culturally competent sport and exercise psychology implies: (a) recognizing hidden ethnocentric philosophical assumptions permeating much of the current theory, research, and practice; (b) transitioning to professional ethics in which difference is seen as not inherent and...... enhancing cultural competence in the ␣eld of sport and exercise psychology....

  13. Field and pressure response of Yb compounds close to a quantum critical point

    Indian Academy of Sciences (India)

    C Seuring; E W Scheidt; E Bauer

    2002-05-01

    YbCu5-Al provides the possibility to tune ground state properties by a change of the valence due to the Cu/Al substitution, by pressure as well as by the application of a magnetic field. Near to the critical concentration cr ≈ 1.5 non-Fermi-liquid properties (NFL) are obvious, obeying hyperscaling. If magnetic order sets in for >1.5, the application of moderate magnetic fields quenches order and again NFL features become evident. Hyperscaling in this case indicates strongly interacting spin fluctuations.

  14. Microwave absorption studies of MgB2 superconductor

    Indian Academy of Sciences (India)

    M K Bhide; R M Kadam; M D Sastry; Ajay Singh; Shashwati Sen; Manmeet Kaur; D K Aswal; S K Gupta; V C Sahni

    2002-05-01

    Microwave absorption studies have been carried out on MgB2 superconductor using a standard X-band EPR spectrometer. The modulated low-field microwave absorption signals recorded for polycrystalline (grain size ∼ 10m) samples suggested the absence of weak-link character. The field dependent direct microwave absorption has been found to obey a $\\sqrt{H}$ dependence with two different slopes, which indicated a transition from strongly pinned lattice to flux flow regime.

  15. Renormalized energy-momentum tensor of 4 theory in curved space-time

    Indian Academy of Sciences (India)

    K G Arun; Minu Joy; V C Kuriakose

    2003-06-01

    Divergenceless expression for the energy-momentum tensor of scalar field is obtained using the momentum cut-off regularization technique. We consider a scalar field with quartic self-coupling in a spatially flat (3+1)-dimensional Robertson–Walker space-time, having arbitrary mass and coupled to gravity. As special cases, energy-momentum tensor for conformal and minimal coupling are also obtained. The energy-momentum tensor is observed to exhibit trace anomaly in curved space-time.

  16. Caractérisation de la fertilité du sol en fonction des mauvaises herbes présentes

    Directory of Open Access Journals (Sweden)

    M'Biandoum, M.

    2006-01-01

    Full Text Available Soil Fertility Characterization Based on Present Weed Specie. In order to determine the soil fertility level using weed indicators, a study was conducted in 4 villages in northern Cameroon. It was based on farmers' interviews and fi eld surveys. It appears that the soil fertility status can be determined by using two groups of weeds: "guide" weeds, orienting the diagnosis according to their relative importance; "indicator" weeds, used to discriminate the two soil types (fertile/ degraded. Presence or absence of the identifi ed species allows farmers to determine whether the plot is fertile or degraded. He can then decide to use the fi eld or not.

  17. Echinococcus granulosus protoskolekslerinin in vitro ortamda gelişimi ve protein yapılarının SDS-PAGE yöntemi ile belirlenmesi

    OpenAIRE

    BÖLÜKBAŞ*, Cenk Soner

    2007-01-01

    Hidatidozis, Echinococcus cinsine ait türlerin larva sekillerinin (metacestod)insan ve hayvanlarda olusturdugu, hem saglık hem de ekonomik yöndenoldukça önemli, zoonotik bir hastalıktır. Türkiye'de hidatidozdan sorumluEkinokok türlerinden en yaygın olanı Echinococcus granulosus'dur.Bu çalısmada koyun kökenli hidatik kistlerden elde edilenprotoskolekslerin monofazik in vitro kültürde kistik yönde gelisimininincelenmesi ve in vitro kültür sonucunda elde edilen mikrokistleri...

  18. Optical spectra and spin-Hamiltonian parameters of trivalent ytterbium in lead tungstate

    Indian Academy of Sciences (India)

    W-L Feng; X-M Li

    2011-01-01

    By using crystal-field theory, the optical spectra and spin-Hamiltonian parameters (abbr. SH parameters, i.e. the anisotropic factors $g_{\\|} g_{⊥}$, and hyperfine structure constants $A_{\\|}, A_{⊥}$) of 171Yb3+ and 173Yb3+ isotopes in the tetragonal PbWO4 are calculated. The theoretical results agree well with the experimental values. The crystal-field parameters and the signs of the hyperfine structure constants for both 171Yb3+ and 173Yb3+ isotopes are determined. The validities of the theoretical results are discussed.

  19. TESLA ENERGY SPACE FOR MIE–SCHWINGER CONTINUOUS ELECTRON

    OpenAIRE

    Bulyzhenkov, I.

    2013-01-01

    Tesla reading of electricity through invisible energy ether between visible bodies corresponds to the found radial solution for a continuous source. The Mie–Schwinger distributed electron extends over the very structure of its Coulomb radial field. The electric charge is not a basic concept of Maxwell-Tesla electrodynamics but is the field energy distribution under the unified, non-dual approach to matter-energy in the nonempty world space. Electric self-energy of such a unified nonlocal carrier ...

  20. Isolation of Pigments from Red Beetroot (in Turkish

    OpenAIRE

    Selemoğlu, Alev; Yıldız, Fatih

    1983-01-01

    Bu araştırma, kırmızı pancardan gıda maddelerine renk vermek için kırmızı pigmentlerin elde edilmesini içermektedir. Kırmızı pancar ekstraktı pancarın sitrik asit çözeltisi ile ekstraksiyonu sonucu hazırlanmıştır. Elde edilen pancar suyundaki katı bileşenler püskürtme ve dondurarak kurutma yöntemleri ile ayrıştırılması denenmiştir.

  1. Toz Maya Ekstraktı Üretimi

    OpenAIRE

    Başoğlu, Fikri; Halkman, Kadir; Ertaş, Hamdi; Çakmakçı, Lütfü

    1985-01-01

    Bira fabrikası artığı yaş mayadan toz maya ekstraktı elde edilmiş ve 2 yabancı ticari firma tarafından üretilen maya ekstraktı ile kimyasal ve mikrobiyolojik açıdan kıyaslanmıştır. Elde edilen sonuçlar bu maya ekstraktının mikrobiyolojik çalışmalarda kullanılabileceğini göstermiştir.   

  2. Bianchi type-I massive string magnetized barotropic perfect fluid cosmological model in bimetric theory

    Indian Academy of Sciences (India)

    S D Katore; R S Rane; K S Wankhade

    2011-04-01

    Bianchi type-I massive string cosmological model for perfect fluid distribution in the presence of magnetic field is investigated in Rosen’s [Gen. Relativ. Gravit. 4, 435 (1973)] bimetric theory of gravitation. To obtain the deterministic model in terms of cosmic time, we have used the condition $A = (B C)^n$, where n is a constant, between the metric potentials. The magnetic field is due to the electric current produced along the -axis with infinite electrical conductivity. Some physical and geometrical properties of the exhibited model are discussed and studied.

  3. Nanoscale Assembly Using DNA and Electromagnetic Fields

    OpenAIRE

    Eskelinen, Antti-Pekka

    2013-01-01

    In this work we demonstrate the control of nanoparticles and nanostructures with the help of the DNA origami method and dielectrophoresis. DNA nanotechnology is a subfield of nanotechnology where DNA is used as a construction material. The DNA origami method is a recent development in the field which enables the assembly of nanoparticles with nanometer scale accuracy through self-assembly. Here we take advantage of the method for efficient deposition and alignment of single-walled carbon nanotub...

  4. Electric field gradients in Hg compounds

    DEFF Research Database (Denmark)

    Arcisauskaité, Vaida; Knecht, Stefan; Sauer, Stephan P. A.;

    2012-01-01

    We examine the performance of Density Functional Theory (DFT) approaches based on the Zeroth-Order Regular Approximation (ZORA) Hamiltonian (with and without inclusion of spinorbit coupling) for predictions of electric ¿eld gradients (EFGs) at the heavy atom Hg nucleus. This is achieved by compar......We examine the performance of Density Functional Theory (DFT) approaches based on the Zeroth-Order Regular Approximation (ZORA) Hamiltonian (with and without inclusion of spinorbit coupling) for predictions of electric ¿eld gradients (EFGs) at the heavy atom Hg nucleus. This is achieved...

  5. Fractional E˙ective Action at Strong Electromagnetic Fields

    OpenAIRE

    Kleinert, Hagen; Strobel, Eckhard; Xue, She-Sheng

    2014-01-01

    In 1936, Weisskopf [K. Dan. Vidensk. Selsk. Mat. Fys. Medd. XIV (1936)] showed that for vanishing electric or magnetic fields the strong-field behavior of the one-loop Euler– Heisenberg e˙ective Lagrangian of quantum electrodynamics (QED) is logarithmic. This result can be generalized for di˙erent limits of the Lorentz invariants. The logarithmic dependence can be interpreted as a lowest-order manifestation of an anomalous power behavior of the e˙ective Lagrangian of QED.

  6. Accurate Ellipsometric Magnetic-Field Sensor Used to Align the LNE Watt Balance Magnetic Circuit

    OpenAIRE

    Ouedraogo, K; Topsu, S; Gayhmouni, J; Chassagne, L; Alayli, Y; Juncar, P.; Gournay, P; Bielsa, F; Geneves, G.

    2011-01-01

    International audience Magnetic-…eld sensors based on the Faraday e¤ect in a Tb 3 Ga 5 O 12 crystal are investigated in terms of their sensitivity, accuracy and directionality. The possibility of an increased sensitivity of such Faraday e¤ect sensors due to the application of multipass sensitive elements is considered. Signal-to-noise measurements on 5 mm diameter 20 mm long sample yield magnetic …elds equivalent noise of 300 nT=Hz 1=2 (= 1 s). The sensor has a sensitivity of 5.457(1) rad=...

  7. SPATIAL DISTRIBUTION IN A DRY ONION FIELD (A PRECISION FARMING APPLICATION IN TURKEY)

    OpenAIRE

    AKDEMIR, Bahattin; KORKMAZ BELLITURK; Can Burak SISMAN; Blackmore, Simon

    2006-01-01

    Objective of this study is to determine spatial variability in a dry onion fi eld and to produce a management strategy which is based on spatial variability of yield and soil components. The onion fi eld properties were determined and given in maps. Soil samples were taken to determine properties of soil such as pH, salt, humidity, CaCO3, organic matter, total N, Zn, Fe, P2O5, Ca+Mg, K, texture. Longitudinal slope was also measured. Results were used to produce maps. Most percentage of the...

  8. Partnership for practice change and knowledge development

    DEFF Research Database (Denmark)

    Larsen, Stina Meyer; Stokholm, Gitte; Madsen, Anette Judithe;

    2014-01-01

    and various practice fi elds and (B) to develop students ’ competences in practice research and collaboration, thus building up a framework in which research-based change in occupational therapy practice can be pursued through students ’ practice research. The practice research undertaken in the students...... and the students ’ bachelor ’ s theses. Results of the evaluations showed that (A) the developed institutional partnerships promoted the goals of the initiative, including research-based proposals for change in the practice fi eld and that (B) the students acquired competences in practice research and collaboration...

  9. Incentives and Social Relations in the Workplace

    OpenAIRE

    Sol, Joeri

    2011-01-01

    textabstractIn this thesis, I study how organizations can incentivize a group of individuals, both in theory and by conducting …eld experiments. The …eld experiments introduce short-term team incentives in a randomly selected sample of stores that belong to a single Dutch retail chain of 128 stores. The results o¤er valuable lessons for both researchers and practitioners alike. In addition, this thesis provides a theoretical in- vestigation of the interaction between the remuneration schemes ...

  10. 2-D deformation of two welded half-spaces due to a blind dip-slip fault

    Indian Academy of Sciences (India)

    Sunita Rani; Neeru Bala

    2006-06-01

    The solution of two-dimensional problem of an interface breaking long inclined dip-slip fault in two welded half-spaces is well known.The purpose of this note is to obtain the corresponding solution for a blind fault.The solution is valid for arbitrary values of the fault-depth and the dip angle.Graphs showing the variation of the displacement field with the distance from the fault, for different values of fault depth and dip angle are presented.Contour maps showing the stress field around a long dip-slip fault are also obtained.

  11. Homogenization of dispersive material parameters for Maxwell's equations using a singular value decomposition

    OpenAIRE

    Sjöberg, Daniel

    2004-01-01

    We find effective, or homogenized, material parameters for Maxwell’s equations when the microscopic scale becomes small compared to the scale induced by the frequencies of the imposed currents. After defining a singular value decomposition of the non-selfadjoint partial differential operator, we expand the electromagnetic field in the modes corresponding to the singular values, and show that only the smallest singular values make a significant contribution to the total field when ...

  12. Spin tunnelling in mesoscopic systems

    Indian Academy of Sciences (India)

    Anupam Garg

    2001-02-01

    We study spin tunnelling in molecular magnets as an instance of a mesoscopic phenomenon, with special emphasis on the molecule Fe8. We show that the tunnel splitting between various pairs of Zeeman levels in this molecule oscillates as a function of applied magnetic field, vanishing completely at special points in the space of magnetic fields, known as diabolical points. This phenomena is explained in terms of two approaches, one based on spin-coherent-state path integrals, and the other on a generalization of the phase integral (or WKB) method to difference equations. Explicit formulas for the diabolical points are obtained for a model Hamiltonian.

  13. Data mining in e-commerce: A survey

    Indian Academy of Sciences (India)

    N R Srinivasa Raghavan

    2005-04-01

    Data mining has matured as a field of basic and applied research in computer science in general and e-commerce in particular. In this paper, we survey some of the recent approaches and architectures where data mining has been applied in the fields of e-commerce and e-business. Our intent is not to survey the plethora of algorithms in data mining; instead, our current focus being e-commerce, we limit our discussion to data mining in the context of e-commerce. We also mention a few directions for further work in this domain, based on the survey.

  14. Tokamak Plasmas : Observation of floating potential asymmetry in the edge plasma of the SINP tokamak

    Indian Academy of Sciences (India)

    Krishnendu Bhattacharyya; N R Ray

    2000-11-01

    Edge plasma properties in a tokamak is an interesting subject of study from the view point of confinement and stability of tokamak plasma. The edge plasma of SINP-tokamak has been investigated using specially designed Langmuir probes. We have observed a poloidal asymmetry of floating potentials, particularly the top-bottom floating potential differences are quite noticeable, which in turn produces a vertical electric field (v). This v remains throughout the discharge but changes its direction at certain point of time which seems to depend on applied vertical magnetic field v).

  15. Control of magnetic domains and domain walls by themal gradients

    OpenAIRE

    Stärk, Martin

    2015-01-01

    The aim of this work is to study heat effects in thin magnetic films to verify the theoretical prediction of domain wall motion towards a heat source. In the theory, a domain wall moves from a cold region towards the hotter part due to energy minimization processes. It is shown that no electron transport is necessary for this effect as it has been observed in insulators. An analytical model describes the effective field that acts on a domain wall as an external applied magnetic field. This is pr...

  16. Octonionic Lorenz-like condition

    Indian Academy of Sciences (India)

    Murat Tanişli; Bernard Jancewicz

    2012-02-01

    In this study, the octonion algebra and its general properties are defined by the Cayley–Dickson’s multiplication rules for octonion units. The field equations, potential equations and Maxwell equations for electromagnetism are investigated with the octonionic equations and these equations can be compared with their vectorial representations. The potential and wave equations for fields with sources are also provided. By using Maxwell equations, a Lorenz-like condition is newly suggested for electromagnetism. The existing equations including the photon mass provide the most acknowledged Lorenz condition for the magnetic monopole and the source.

  17. Application of holography in jet acoustic studies

    Indian Academy of Sciences (India)

    G Pundarika; R Lakshminarayana; T S Sheshadri

    2004-08-01

    Source strength distribution on a jet boundary was obtained from measurements using the principle of acoustic holography. Measurements were conducted in an open field. Measurement of acoustic pressure on a cylindrical twodimensional contour located close to the vibrating jet boundary was used to obtain the acoustic source strength distribution at the jet boundary. Particular attention was focussed on back projection of the sound field on to a cylindrical surface. A jet emanating from 5 mm convergent nozzle was used for the holography experiments, assuming axisymmetry. Experimental results were compared with results obtained from holography

  18. Surface modification of an epoxy resin with polyamines and polydopamine: Adhesion toward electroless deposited copper

    Science.gov (United States)

    Schaubroeck, David; Mader, Lothar; Dubruel, Peter; Vanfleteren, Jan

    2015-10-01

    In this paper the influence of the epoxy roughness, surface modifications and ELD (electroless copper deposition) temperatures on the adhesive strength of the copper is studied. Good adhesion at low roughness values is targeted due to their applicability in high density electronic circuits. Roughened epoxy surfaces are modified with adsorbed polyamines, polydopamine and polyamines grafted to polydopamine. Next the, adhesive strength of ELD copper is determined with peel strength measurements and the interphases are examined with SEM (scanning electron microscopy). Polydopamine and polyamines grafted to polydopamine can lead to increased adhesive strength at lower roughness values compared to the non-modified samples at specific plating temperatures.

  19. Nonlinear wave propagation through a ferromagnet with damping in (2+1) dimensions

    Indian Academy of Sciences (India)

    S G Bindu; V C Kuriakose

    2000-02-01

    We investigate how dissipation and nonlinearity can affect the electromagnetic wave propagating through a saturated ferromagnet in the presence of an external magnetic field in (2+1) dimensions. The propagation of electromagnetic waves through a ferromagnet under an external magnetic field in the presence of dissipative effect has been studied using reductive perturbation method. It is found that to the lowest order of perturbation the system of equations for the electromagnetic waves in a ferromagnet can be reduced to an integro-differential equation.

  20. İMKB’ye Kayıtlı Sanayi İşletmelerinin Maliyet Yönetim Sistemlerini Uygulama ve Uygulamama Nedenlerinin Tespitine Yönelik Bir Araştırma / A Research on Determination of Reasons for Applying and Not Applying Cost Management Systems of Manufacturing...

    OpenAIRE

    Karcıoğlu, Reşat; ÖZTÜRK, Meryem

    2012-01-01

    Özet: Bu çalışmada, maliyet yönetim sistemlerinin (Faaliyet Tabanlı Maliyetleme, HedefMaliyetleme, Kaizen Maliyetleme, Kalite Maliyet Sistemi, Tam Zamanında Üretim OrtamındaMaliyetleme, Mamul Yaşam Dönemi Maliyetleme) tespit edilmesi ve maliyet yönetim sistemleriniuygulayan işletmelerin bunları hangi amaçlarla uyguladıkları, uygulamayan işletmelerinneden uygulamadıklarının belirlenmesi amaçlanmıştır. Bu amaç doğrultusunda 2011 yılınınŞubat ...

  1. DİŞ HEKİMLİĞİNDE DOKU MÜHENDİSLİĞİNİN YERİ - Tissue Engineering in Dentistry

    OpenAIRE

    Sırık, Z. Selin; Ergin, Selen; Işık, Gülbahar

    2012-01-01

    özDoku mühendisliği hasarlı doku ve organların yeniden restore edilmesini amaçlayan bir mühendislik dalıdır. Bu mühendislik dalı, hücrelerin doğal veya sentetik yapı iskelelerine spesifik sinyallerle entegre edilmesi üzerine kurulmuştur. Bu kısa derlemede diş hekimliğinde doku mühedisliği stratejiler ve uygulama alanları olarak iki başlık altında incelenmiştir. Doku mühendisliği stratejilerinde doku kondüksiyonu, doku indüksiyonu, kök hücre nakli ve gen terapisi tanımlanmış, doku mühendisliği...

  2. Türkiye’de Amaranthus (Amaranthaceae) Türlerine Karşı Biyolojik Mücadelede Böceklerin Kullanımı

    OpenAIRE

    TOZLU, Göksel; ÇORUH, İrfan; Gültekin, Levent

    2013-01-01

    ÖZET: Horoz ibiği türleri (Amaranthus spp.) dünyada ekonomik bakımdan oldukça önemli yabancı ot türleridir. Bu türlerden de özellikle Amaranthus retroflexus L. Avrupa ve Türkiye'de büyük öneme sahip 10 yabancı ot türünden birisidir. Çok değişik kültür bitkisi alanlarında önemli sorunlara neden olan bu cinse mensup türler ile mücadele edilmesi kaçınılmazdır. Bunu yaparken kimyasal m&u...

  3. Eber (Afyon) Gölünün trofik statüsünün tespiti

    OpenAIRE

    YASAN, Ahmet Burak

    2007-01-01

    Bu araştırmada Eber (Afyon) gölünde Ocak 2006-Aralık 2006 tarihleri arasında gölün trofik durumunu belirlemek amacıyla, bazı su kalite paremetrelerine bakılarak ve gölde mevcut bulunan besin zincirinin birinci ve ikinci halkasını teşkil eden fitoplankton ve zooplankton; ayrıca zoobentik organizmalar da cins seviyesinde mevsimsel olarak incelenerek tespit edilmesi amaçlanmıştır.

    Bu amaçla gölde belirlenen 7 istasyondan su numuneleri alınmış, sıcaklık, çözünmüş oksije...

  4. Tokolitik Tedavide Güncel Yaklaşımlar

    OpenAIRE

    Köse, Osman

    2015-01-01

    Uzun yıllardır kullanılmakta olan tokolitik ajanların, son literatür bilgileri ile etkinliği ve yan etkilerinin değerlendirilerek; ilk tercih edilmesi gereken tokolitik ajanın belirlemeyi amaçladık. Erken doğum eylemi tanısı ile izlenen hastalarda uygulanan tıbbi tedavilerden ß agonistler, Ca kanal blokerleri ve atosibana göre daha fazla yan etkiye neden olmakta, atosiban ise yan etkisi daha az ve ruhsatlı olmasına rağmen daha pahalı olması dezavantajını taşımaktadır. Nifedipin için hala ruhs...

  5. İnsan plazmasında risperidon ve aktif metaboliti 9-hidroksirisperidonun miktar tayini ve yöntem validasyonu

    OpenAIRE

    DEMİRAY, Gökçe

    2008-01-01

    Bu çalışmada atipik nöroleptik ilaçlar arasında önemli bir yere sahip olanrisperidonun ve aktif metaboliti 9-hidroksirisperidonun (paliperidon) insanplazmasından kantitatif tayini için basit ve duyarlı HPLC-MS miktar tayinyönteminin geliştirilmesi ve yöntemin valide edilmesi amaçlanmıştır.İnsan plazmasından sıvı-sıvı ekstraksiyon yöntemiyle risperidon ve aktifmetaboliti 9-hidroksirisperidon ekstre edilmiştir ve kantitatif miktar tayinleri içinHPLC-MS sistemi pozitif iyon ve SIM modun...

  6. Hemşirelikte lisans programını değerlendirme ölçeği (HLPDÖ): Geliştirilmesi, geçerliği, güvenirliği

    OpenAIRE

    Akyüz, Aygül; Demiralp, Meral; Ünver, Vesile; Güvenç, Gülten; Şengün, Güler; Üstünsöz, Ayfer; Akbayrak, Nalan; Hatipoğlu, Sevgi

    2014-01-01

    Amaç: Bu metodolojik çalışma, Hemşirelikte Lisans Programını Değerlendirme Ölçeğinin geliştirilmesi ve psikometrik özelliklerinin test edilmesi amacıyla gerçekleştirildi. Yöntem: Çalışmanın örneklemini Ankara’da bir hemşirelik lisans programlarından mezun 202 hemşire oluşturdu. Lisans programının kazandırdığı bilgi ve becerilerin, mesleki yeterlilik ve bireysel gelişime yaptığı katkılarla ilgili hemşirelerin düşüncelerini ve görüşlerini belirlemek için 12 hemşire ile odak...

  7. Yapay sinir ağları ve bulanık mantık yöntemleri ile kuraklık tahmini

    OpenAIRE

    Bacanlı, Ülker Güner; Dikbaş, Fatih; Fırat, Mahmut

    2011-01-01

    Kuraklık, diğer doğal afetler arasında canlı yaşamı ve ekonomisi için en büyük etkiye sahip, en önemli afetlerden biridir. Son yıllarda dünyada ve ülkemizde görülen en önemli sorunlardan biridir. Kuraklık su kaynaklarının yetersizliği nedeniyle su talebinin karşılanamaması olarak ortaya çıkmaktadır. Su kaynakları ile ilgili olarak, bu belirsizliğin belirlenmesi, takip edilmesi ve etkilerinin azaltılması ile ilgili alınacak tedbirler ve yapılacak planlamalar doğal olarak hidrolojik çalışmalarl...

  8. Patates Hasat Makinalarında Yumru Zedelenmelerinin Değerlendirilmesi ve Çözüm Önerileri

    OpenAIRE

    GÜLER, İbrahim Ethem

    2013-01-01

    ÖZET : Tarımsal üretimde hasat işlemi tüm üretim aşamaları içerisinde dikkat edilmesi gereken en zor aşamalardan birisidir. Patates hasadı da bu anlamda ürün verimini, yumru kalitesini, pazarlama düzeyini ve yumru depolanabilirliğini etkileyen en önemli aşamadır. Patates tarımında ürün verimi ve kalitesi hasat esnasında artmayabilir, ancak uygun olmayan ve dikkatsiz uygulamalar kesin olarak ürün kalitesini, verimini ve ekonomi...

  9. HABSBURG ELÇİSİ WALTER LESLIE'NİN OSMANLI DEVLET YAPISINA DAİR GÖZLEMLERİ (1665)

    OpenAIRE

    Kolçak, Özgür

    2013-01-01

    HABSBURG ELÇİSİ WALTER LESLIE'NİN OSMANLI DEVLET YAPISINA DAİR GÖZLEMLERİ (1665)9 Ağustos 1664 tarihinde Osmanlı ve Habsburg yönetimleri arasında Vasvar antlaşması imzalandı. İki devlet arasındaki 1663-64 savaşlarını resmen sonlandıran antlaşmanın son maddesinde, Osmanlı ve Habsburg hanedanlarını temsil eden büyükelçilerin mübadele edilmesi öngörülüyordu. Habsburg elçisi Walter Leslie, 1665 Ağustos'unun ilk günü Edirne'ye geldi. Walter Leslie, diplomatik görüşmelerle dolu günlerde, Edirne ve ...

  10. BİYODİZEL İLE ÇALIŞAN BİR DİZEL MOTORDA YAKIT PÜSKÜRTME AVANSININ PERFORMANS VE EGZOZ EMİSYONLARINA ETKİSİ

    OpenAIRE

    Abdurrazzak AKTAŞ; Yakup SEKMEN

    2013-01-01

    Biyodizel, yapısında oksijen bulunduran, sülfür içermeyen, zehirleyici etkisi olmayan, doğada bozunabilir veyenilenebilir bir alternatif dizel motor yakıtıdır. Dizel yakıta göre daha az karbon monoksit, hidrokarbon ve isemisyonu yaydıkları bilinmektedir. Dizel motorlarda herhangi bir ayar ve değişiklik yapılmadankullanılabilmektedir. Püskürtme zamanlaması motor performansı ve egzoz emisyonlarını etkileyen önemliparametrelerden birisidir. Bu parametrelerin optimize edilmesi ile hem yakıt ekono...

  11. Yıldırma (Mobbing): Kuramsal Bir Çerçeve

    OpenAIRE

    Güneş Ertuna , Derya; Ertuna, Erdem

    2015-01-01

    Mobbing; işletmelerde çalışanların çalışma arkadaşları, yöneticileri ve/veya astları tarafından rahatsız ve huzursuz edilmesi, fiziksel ve/veya psikolojik şiddete maruz bırakılması olarak değerlendirilebilmektedir. Bu yönüyle mobbingin ana amacı, mobbing mağduru konumundaki kişinin yıldırılması ve bir anlamda yenik düşmesinin sağlanması olarak ifade edilmektedir. “İsveç Ulusal İş Güvenliği ve Hijyeni Dairesi (Swedish National Board of Occupational Safety and Health)” tarafından mobbing kavram...

  12. Doğu alıcı (Crataegus orientalis Paal. Ex. M. Bieb) tohumlarının çimlenmesi üzerine ekim alanı, ekim zamanı ve bazı önişlemlerin etkilerinin araştırılması

    OpenAIRE

    Göktürk, Aşkın; Yılmaz, Serkan

    2016-01-01

    Bu çalışma, ekim alanı ve ekim zamanı ile kimyasal zedeleme ve küllü suda bekletme önişlemlerinin Doğu alıcı (Crataegus orientalis paal. Ex. M. Bieb) tohumlarının çimlenme yüzdesi üzerine etkilerinin tespit edilmesi amacıyla yapılmıştır. C. orientalis tohumlarındaki çimlenme engellerini giderecek en uygun yöntemin belirlenmesi amacıyla H2SO4 (%98) ve HNO3 (%56)’te bekletme işlemleri ile C6H8O7 ve küllü suda bekletme işlemleri iki ayrı grup halinde uygulanmıştır. Ekimler, alan etkisini ortaya ...

  13. TUTUKLU ÇOCUKLAR ÜZERİNE BİR ARAŞTIRMA: ÇOCUKLARIN SUÇA YÖNELMESİNDE ETKİLİ OLAN TOPLUMSAL NEDENLER VE ÇÖZÜM ÖNERİLERİ

    OpenAIRE

    Avcı, Müjdat

    2010-01-01

    Bu araştırmada 18 yaş altı çocukların aile yapısı, ailenin göç etmişolması, ailenin konut ve demografik özellikleri, arkadaş çevresi, okul çevresi veboş zamanların değerlendirilme şekli gibi faktörlerin suça yönelmelerine etkiedip etmediğinin tespit edilmesi amaçlanmaktadır.Araştırmanın örneklemini Erzurum il sınırları içerisinde herhangi bir suçisnadıyla Erzurum E Tipi Kapalı Ceza İnfaz Kurumu’na getirilmi...

  14. THE LANGUAGE USE OF ARISING FROM SOCIAL DIVERSITY AND AN ASSESSMENT INTENDED FOR TURKISH EDUCATION SOSYAL FARKLILIKLARDAN KAYNAKLANAN DİL KULLANIMI VE TÜRKÇE EĞİTİMİNE YÖNELİK BİR DEĞERLENDİRME

    Directory of Open Access Journals (Sweden)

    Murat ŞENGÜL

    2009-12-01

    Full Text Available In this study, depending on social diversities, it is taken on the differing dimensions from standard language of language usage arouse from individuals and mentioned about the issues need to be considered for applications intended to education and instruction of Turkish Language in terms of obviating those diversities. Bu çalışmada, sosyal farklılıklara bağlı olarak, bireylerde ortaya çıkan dil kullanımının ölçünlü dilden farklılaşan boyutları ele alınmakta, bu farklılıkların giderilmesi açısından Türkçenin eğitimi ve öğretimine yönelik uygulamalarda dikkat edilmesi gereken hususlara değinilmektedir.

  15. Karışım DNA profillerinin incelenmesi ve yorumlanması

    OpenAIRE

    YARDIMCI, Emel

    2011-01-01

    Karışım DNA profillerine, başta cinsel saldırı olayları olmak üzere başka bir çok olayda rastlanmaktadır. Karışımların tespit edilmesi ve yorumlanması eğitim ile birlikte deneyim gerektirmektedir.Bu tez çalışmasındaki amaç, bir adli DNA laboratuvarın imkan ve kabiliyetleri ile, karışım DNA profillerinin incelenmesi ve yorumlanması için rut...

  16. PEDİATRİ HEMŞİRELİĞİNDE İLAÇ YÖNETİMİ

    OpenAIRE

    Çetinkaya, Şenay; Tengir, Tülay

    2010-01-01

    ÖZETÇocuğun gelişimsel özellikleri, ilaç uygulamalarında kullanılan teknikleri ve yaklaşımları etkiler. Bu makalede, yetişkin ve çocuk arasındaki farmakokineti farklılığı gözönüne alınarak; ilaç uygulamalarında hemşirenin sorumlulukları, ilaçların uygu-lanma yöntemleri ve bu yöntemlerin çocukluk dönemlerine göre dikkat edilmesi gereken unsurları vurgulanmıştır. Hemşire ilaçların hazırlanması, uygulan...

  17. Nonsteroidal anti-inflamatuvar ilaçların gebelikteki toksisiteleri ile ilgili literatürlerin gözden geçirilmesi

    OpenAIRE

    Gökçimen, Alpaslan; Malas, M.Ali

    2009-01-01

    SüleymanDemirel Üniversitesi TIP FAKÜLTESİ DERGİSİ: 2003 Eylül; 10(3) Nonsteroidal anti-inflamatuvar ilaçların gebelikteki toksisiteleri ile ilgili literatürlerin gözden geçirilmesi Alparslan Gökçimen, M.Ali Malas Özet Nonsteroidal anti-inflamatuvar ilaç (NSAII)'lar genellikle romatizmal hastalıklarda, ağrı, ateş ve enflamasyonun tedavisi için kullanılır. Gebelikteki aktif romatizmal hastalığın tedavi edilmesi, anne sağlığı ve fetüsün gelişimi için ön...

  18. Tasavvufun ve Epistemolojik Bir Araç Olarak İlhamın İbn Teymiyye Düşüncesindeki Yeri

    Directory of Open Access Journals (Sweden)

    Emrah Kaya

    2016-06-01

    Full Text Available ÖZ: Bu makalenin amacı Selef anlayışına dayalı bir geleneğin savunucusu olarak tanınan İbn Teymiyye’nin tasavvufa ve tasavvufî bilginin temel aracı olan ilhama yaklaşımını çalışmaktır. Tasavvufî ıstılahları genel sûfî anlayıştan farklı bir şekilde yorumlayan İbn Teymiyye birçok kimse tarafından katı bir tasavvuf karşıtı olarak görülmüştür. Ayrıca İbn Teymiyye’nin sürekli olarak Kur’an, hadis ve Selefin düşüncelerini dinî bilginin temeli olarak sunması onun ilham ve rasyonel metotlar ile elde edilen bilgiye sıcak bakmadığı, bunlara epistemolojisinde yer vermediği düşüncesinin ortaya çıkmasına ve zaman içinde gelişmesine neden olmuştur. Hâlbuki araştırmamızın sonucunda İbn Teymiyye’nin tasavvufu belli şartlar ile kabul etmesinin yanı sıra ilhamın epistemolojik değerini de onayladığı sonucuna ulaşılmıştır. O, tasavvufu erken dönem ve sonraki dönem tasavvuf olarak incelerken, ilhamı doğaüstü olayların bir alt kategorisi olarak gördüğü ilim bâbında ele almaktadır. Tasavvufun ve ilham ile gelen bilginin Kur’an, sünnet ve Selefin düşünceleri ışığında test edilmesi gerektiğine inanan İbn Teymiyye’nin yaptığı reddetmek değil, kendi kriterleri doğrultusunda meseleyi detaylı olarak incelemektir. Bu nedenle, konuyu eleştirel ve betimsel olarak ele alan makalemiz İbn Teymiyye’nin tasavvufa ve tasavvufî bilginin temel dayanağı olan ilhama yönelik tutumuna odaklanmaktadır.ÖZET: İslam tarihinde en etkili, üretken ve tartışmalı âlimlerden biri olan İbn Teymiyye dinî bilgi edinmede en iyi ve en güvenilir yolu bulmak için samimiyetle çaba sarf etmiştir. Bu çaba sonucunda onun Kur’an, hadis, Kelâm, İslam felsefesi ve Yunan felsefesi hakkındaki muazzam bilgisi verimli eserleri vasıtasıyla müşâdehe edilebilir. Epistemolojik, teolojik ve felsefî ifadelerinin dağınık bir şekilde bulunduğu eserlerinde vahiy

  19. 77 FR 26779 - Endangered Species; Receipt of Applications for Permit

    Science.gov (United States)

    2012-05-07

    ... Heads of Executive Departments and Agencies of January 21, 2009--Transparency and Open Government (74 FR... (Equus hemionus) Przewalski's horse (Equus przewalskii) Grevy's zebra (Equus grevyi) Eld's deer (Rucervus... dammah) Arabian oryx (Oryx leucoryx) dama gazelle (Nanger dama) slender-horned gazelle...

  20. 77 FR 9687 - Endangered Species; Receipt of Applications for Permit

    Science.gov (United States)

    2012-02-17

    ... Departments and Agencies of January 21, 2009--Transparency and Open Government (74 FR 4685; January 26, 2009... Przewalski's horse (Equus przewalskii) to enhance their propagation or survival. This notification covers... CFR 17.21(g) for the Eld's deer (Rucervus eldii), barasingha (Rucervus duvaucelii), Arabian oryx...

    1. 78 FR 21627 - Endangered Species; Receipt of Applications for Permit

      Science.gov (United States)

      2013-04-11

      ... Heads of Executive Departments and Agencies of January 21, 2009--Transparency and Open Government (74 FR... conducted by the applicant over a 5-year period. Applicant: Dark Horse Ent., Fredericksburg, TX; PRT-00453B... (Rucervus duvaucelii), Eld's deer (Rucervus eldii), scimitar-horned oryx (Oryx dammah), Arabian oryx...

    2. Fermions in light front transverse lattice quantum chromodynamics

      Indian Academy of Sciences (India)

      Dipankar Chakrabarti; Asit K De; A Harindranath

      2003-11-01

      We briefly describe motivations for studying transverse lattice QCD. Presence of constraint equation for fermion field on the light front allows different methods to put fermions on a transverse lattice. We summarize our numerical investigation of two approaches using (a) forward and backward derivatives and (b) symmetric derivatives.

    3. 77 FR 20838 - Endangered Species; Receipt of Applications for Permits

      Science.gov (United States)

      2012-04-06

      ...), barasingha (Rucervus duvaucelii), Eld's deer (Rucervus eldii), Arabian oryx (Oryx leucoryx), scimitar-horned..., export, and cull of excess scimitar-horned oryx (Oryx dammah), from the captive herd maintained at their... scimitar-horned oryx (Oryx dammah), to enhance their propagation or survival. This......

    4. 78 FR 53473 - Endangered Species; Receipt of Applications for Permit

      Science.gov (United States)

      2013-08-29

      ... registration under 50 CFR 17.21(g) for the scimitar-horned oryx (Oryx dammah) to enhance the species...), Eld's deer (Rucervus eldii), scimitar-horned oryx (Oryx dammah), Arabian oryx (Oryx leucoryx), addax... authorizing interstate and foreign commerce, export, and cull of excess scimitar-horned oryx......

    5. Announcement of the Diagnostics 2016 Junior Scientists Travel Award.

      Science.gov (United States)

      Editorial Office, Diagnostics

      2016-01-01

      With the goal of recognizing outstanding contributions to the field of medical diagnostics by early-career investigators, including assistant professors, postdoctoral students and PhD students, and assisting them in attending international conferences in 2016, early this year Diagnostics accepted nominations for the Junior Scientists Travel Award 2016. PMID:27314391

    6. How to encourage road noise abatement in Nordic municipalities

      DEFF Research Database (Denmark)

      Sørensen, Claus Hedegaard

      2008-01-01

      Road noise nuisance is a huge problem in the Nordic countries, and it seems diffi cult for Nordic countries to meet national targets for its reduction. One reason for this is the lack of municipal activities in the fi eld. Th us the research question that this article seeks to answer in relation to...

    7. Structural Investigations of Nanowires Using X-Ray Diffraction

      DEFF Research Database (Denmark)

      Stankevic, Tomas

      Advancements in growth of the nanowire-based devices opened another dimension of possible structures and material combinations, which nd their applications in a wide variety of elds, including everyday life. Characterization of such devices brings its own challenges and here we show that X-rays o...

    8. Inquiry Science: The Gateway to English Language Proficiency

      Science.gov (United States)

      Zwiep, Susan Gomez; Straits, William J.

      2013-01-01

      This paper presents findings from a 4-year project that developed and implemented a blended inquiry science and English Language Development (ELD) program in a large urban California school district. The sample included over 2,000 students in Kindergarten through 5th grade. Participating students' English and science achievement was compared…

    9. Play and dream your city

      DEFF Research Database (Denmark)

      Pihl, Ole Verner

      tool to investigate the creative fi eld between the digital and the analogue. There is an incompatibility embedded in the sketching process. The analogue sketch represents the known and open-ended, the digital the more concrete, while the cave technology is a more open and free dream room for...... experience. 5. Keywords: Analog, digital, game, dream, cave, intuition, and hermeneutic....

    10. RFID Teknolojisi: Firsatlar, Engeller ve Ornek uygulamalar

      OpenAIRE

      Ömür Y.Saatcioglu

      2006-01-01

      Yenilikler ozellikle teknoloji tabanli yenilikler rekabet ustunlugu elde etmek isteyen firmalar icin cok onemlidir. Sureclerini surekli olarak gelistirmeyi amaclanan firmalarin gerceklestirmesi gereken faaliyetlerden biri yeni teknolojilerin degerlendirilmesidir. RFID teknolojisi de ozellikle son yillarda onem kazanan bir teknolojidir. Bu makalede RFID teknolojisi kapsamli olarak tanitilmaktadir. RFID teknolojisinin tarihsel gelisimi ve RFID sistemleri icin gerekli altyapi gereksinimleri acik...

    11. Realizing dignity as a part of intercultural competence

      DEFF Research Database (Denmark)

      Breunig, Steven

      2014-01-01

      The aim of this paper is to present the concept of dignity as a refl ective concept that may serve as a strategy for enhancing intercultural competence. Within the fi eld of intercultural communication, intercultural competence seeks to impart essential knowledge and skills for engaging in interc...

    12. Two problems in thermal field theory

      Indian Academy of Sciences (India)

      François Gelis

      2000-07-01

      In this talk, I review recent progress made in two areas of thermal field theory. In particular, I discuss various approaches for the calculation of the quark gluon plasma thermodynamical properties, and the problem of its photon production rate.

    13. Exploiting the Spur of the Moment to Enhance Healthy Consumption: Verbal Prompting to Increase Fruit Choices in a Self-Service Restaurant

      NARCIS (Netherlands)

      Kleef, van E.; Broek, van den O.; Trijp, van J.C.M.

      2015-01-01

      Background: People often have good intentions to eat healthily, but these inten- tions may get overruled by temporary moments of temptation. The current study examined the effectiveness of “verbal prompting” as a nudge to increase fruit salad sales in a natural setting. Methods: A ¿eld experiment wa

    14. Electronic transport through nanowires: a real-space finite-difference approach

      NARCIS (Netherlands)

      Khomyakov, Petr

      2006-01-01

      Nanoelectronics is a fast developing ¯eld. Therefore understanding of the electronic transport at the nanoscale is currently of great interest. This thesis "Electronic transport through nanowires: a real-space ¯nite-difference approach" aims at a general theoretical treatment of coherent electronic

    15. Sunny prospects for those who park their car in the shade. Solar carports are practical and may soon even be profitable; Sonnige Aussichten fuer Schattenparker. Solar-Carports sind heute schon sehr praktisch - morgen aber vielleicht auch sehr lukrativ

      Energy Technology Data Exchange (ETDEWEB)

      Siemer, Jochen

      2012-05-15

      It is easy to convert normal carports into solar carports, but this is only one of the available options. For example, there are also solar carports on a MW scale. They are an interesting alternative to open-fi9eld systems and may even become an important element of our transportation infrastructure.

    16. Which AdS3 configurations contribute to the SCFT2 elliptic genus?

      NARCIS (Netherlands)

      Murthy, S.V.; Nawata, S.

      2011-01-01

      According to the AdS=CFT duality, the superconformal index of a superconformal eld theory should have an AdS interpretation as a Euclidean functional integral with periodic boundary conditions on the fermions. Unlike the thermal case, the Euclidean continuation of the supersymmetric AdS black hole d

    17. An Eulerian-Lagrangian finite-element method for modeling crack growth in creeping materials

      International Nuclear Information System (INIS)

      This study is concerned with the development of finite-element-solution methods for analysis of quasi-static, ductile crack growth in history-dependent materials. The mixed Eulerian-Langrangian description (ELD) kinematic model is shown to have several desirable properties for modeling inelastic crack growth. Accordingly, a variational statement based on the ELD for history-dependent materials is developed, and a new moving-grid finite-element method based on the variational statement is presented. The moving-grid finite-element method based on the variational statement is presented. The moving-grid finite-element method is applied to the analysis of transient, quasi-static, mode-III crack growth in creeping materials. A generalized Petrov-Galerkin method (GPG) is developed that simultaneously stabilizes the statement to admit L2 basis functions for the nonlinear strain field. Quasi-static, model-III crack growth in creeping materials under small-scale-yielding (SSY) conditions is considered. The GPG/ELD moving-grid finite-element formulation is used to model a transient crack-growth problem. The GPG/ELD results compare favorably with previously-published numerical results and the asymptotic solutions

    18. РЕАЛИЗАЦИЯ ПЕДАГОГИЧЕСКОГО НАСЛЕДИЯ М. МОНТЕССОРИ В ИНКЛЮЗИВНОМ ОБРАЗОВАНИИ ДЕТЕЙ С ОГРАНИЧЕННЫМИ ВОЗМОЖНОСТЯМИ ЗДОРОВЬЯ

      Directory of Open Access Journals (Sweden)

      Г. В. Брыжинская

      2013-12-01

      Full Text Available Аnalyzes the conditions to improve the quality of inclusive education, consider the possibility of Montessori education in the fi eld of education, upbringing and development of children with various physical and intellectual disabilities together with normally developing children in the framework of a common educational space.

    19. QTL Information Table: 211 [Q-TARO

      Lifescience Database Archive (English)

      Full Text Available Morphological trait Seed 1000-grain weight RFLP C)Interval RIL Zhenshan 97B Milyang 46 RZ811 RG5 ... .L. (2001). Comparison of the detection of QTL for yi eld traits in different generations of a rice cross ... using two mapping approaches. Yi ... Chuan Xue Bao 28, 458-464. ...

    20. QTL Information Table: 209 [Q-TARO

      Lifescience Database Archive (English)

      Full Text Available Physiological trait Source activity spikelet fertility RFLP C)Interval RIL Zhenshan 97B Milyang ... .L. (2001). Comparison of the detection of QTL for yi eld traits in different generations of a rice cross ... using two mapping approaches. Yi ... Chuan Xue Bao 28, 458-464. ...

    1. QTL Information Table: 207 [Q-TARO

      Lifescience Database Archive (English)

      Full Text Available Morphological trait Culm/leaf number of panicle RFLP C)Interval RIL Zhenshan 97B Milyang 46 RG65 ... .L. (2001). Comparison of the detection of QTL for yi eld traits in different generations of a rice cross ... using two mapping approaches. Yi ... Chuan Xue Bao 28, 458-464. ...

    2. QTL Information Table: 88 [Q-TARO

      Lifescience Database Archive (English)

      Full Text Available qGP4 Morphological trait Panicle/flower grain number RFLP d)Co-segregated CSSL Asominori IR24 B ... ng, C.M., Wan, J.M., and Zhu, J.G. (2005). QTL for yi eld and its components responded to elevated CO2 in ... rice (Oryza sativa L.). Yi ... Chuan Xue Bao 32, 1066-1073. ...

    3. QTL Information Table: 206 [Q-TARO

      Lifescience Database Archive (English)

      Full Text Available Physiological trait Source activity number of filled grains per panicle RFLP C)Interval RIL Zhen ... .L. (2001). Comparison of the detection of QTL for yi eld traits in different generations of a rice cross ... using two mapping approaches. Yi ... Chuan Xue Bao 28, 458-464. ...

    4. QTL Information Table: 208 [Q-TARO

      Lifescience Database Archive (English)

      Full Text Available Morphological trait Panicle/flower total number of spikelets per panicle RFLP C)Interval RIL Zhe ... .L. (2001). Comparison of the detection of QTL for yi eld traits in different generations of a rice cross ... using two mapping approaches. Yi ... Chuan Xue Bao 28, 458-464. ...

    5. Modeling and rotor field-oriented control of faulty three-phase induction motor based on GSA for tuning of PI controllers

      DEFF Research Database (Denmark)

      Jannati, Mohammad; Mohd Faudzi, Ahmad Athif; Nik Idris, Nik Rumzi; Blaabjerg, Frede

      2016-01-01

      This paper discusses the d-q model and winding function method (WFM) for modeling and a rotor eld-oriented control (RFOC) system for controlling a faulty three-phase induction motor (three-phase IM when one of the phases is disconnected). In the adapted scheme for controlling the faulty IM, it is...

    6. Thirlwall Yasasi: Turkiye Ornegi, 1982-2008

      OpenAIRE

      Rahmi Yamak; Zehra Abdioglu

      2010-01-01

      Bu calismada odemeler dengesi kisitli buyume orani olarak da bilinen Thirlwall yasasi, sermaye hareketleri ve dis borc servisi dikkate alinarak 1982-2008 donemi itibariyle Turkiye icin Kalman filtre tahmin yontemi ile test edilmistir. Elde edilen sonuclara gore, Thirlwall ve Hussain (1982) ve Elliott ve Rhodd (1999)’un odemeler dengesi kisitli buyume orani gerceklesen buyume oraninin iyi bir tahmincisidir.

    7. Exploring the Coming Repositories of Reproducible Experiments: Challenges and Opportunities

      DEFF Research Database (Denmark)

      Freire, Juliana; Bonnet, Philippe; Shasha, Dennis

      2011-01-01

      Computational reproducibility efforts in many communities will soon give rise to validated software and data repositories of high quality. A scientist in a field may want to query the components of such repositories to build new software workflows, perhaps after adding the scientist’s own algorithms...

    8. СПЕЦИФИКА КОММУНИКАТИВНОГО ВЗАИМОДЕЙСТВИЯ В ПРОФЕССИОНАЛЬНОЙ ЮРИДИЧЕСКОЙ ДЕЯТЕЛЬНОСТИ

      OpenAIRE

      Усманова, Е.; Брыжинская, Г.

      2013-01-01

      The article is devoted to features of communicative interaction in the legal fi eld. Аnalyzes the structure and legal means of voice communication. The most universal means of communication is a legal question and developed language skills are important for any lawyer specialization

    9. Effect of Nitrogen, Location and Harvesting Stage on Peppermint Productivity, Oil Content and Oil Composition

      Science.gov (United States)

      Peppermint (Mentha •piperita) is currently not a common crop in the southeastern United States. Recently, there has been an interest in peppermint as an essential oil crop for this region. In 2007, a 'eld experiment was conducted in Mississippi to determine the effect of nitrogen (N) (0 and 80 kg•ha...

    10. Treatment of cancer in old age, shortcomings and challenges

      NARCIS (Netherlands)

      Wymenga, A.N.M.; Slaets, J.P.J.; Sleijfer, D. Th.

      2001-01-01

      The burden of cancer in old age is increasing as a result from both the expanding number of older persons in the population and the high and still increasing cancer incidence in this group. The goal of this article is to outline the shortcomings and challenges of the management of cancer in the elde

    11. Simulating external flow using vortex method in two- and three dimensions

      DEFF Research Database (Denmark)

      Spietz, Henrik Juul; Hejlesen, Mads Mølholm; Walther, Jens Honore;

      present a method for truncating this domain by supplementing the free-space- and periodic conditions with an out ow condition. The method is conveniently applied within the eld of bridge aerodynamics as it can be used for the calculation of the aerodynamic net forces, which depend highly on the geometry...

    12. Single cell electroporation using microfluidic devices

      NARCIS (Netherlands)

      Le Gac, S.; Berg, van den A.; Lindstrom, S.; Andersson-Svahn, S.M.H.

      2012-01-01

      Electroporation is a powerful technique to increase the permeability of cell membranes and subsequently introduce foreign materials into cells. Pores are created in the cell membrane upon application of an electric fi eld (kV/cm). Most applications employ bulk electroporation, at the scale of 1 mL o

    13. Magneto-structural transitions induced at 1.2 K in Ni.sub.2./sub.MnGa-based Heusler alloys by high magnetic field up to 60 T

      Czech Academy of Sciences Publication Activity Database

      Kamarád, Jiří; Kaštil, Jiří; Skourski, Y.; Albertini, F.; Fabbrici, S.; Arnold, Zdeněk

      2014-01-01

      Roč. 1, č. 1 (2014), s. 1-7. ISSN 2053-1591 Grant ostatní: AVČR(CZ) M100101203 Institutional support: RVO:68378271 Keywords : martensitic transition * high fi eld * Heusler alloy * Ni 2 MnGa Subject RIV: BM - Solid Matter Physics ; Magnetism

    14. ВОСПИТАНИЕ КОНКУРЕНТНОСПОСОБНОСТИ БУДУЩИХ СПЕЦИАЛИСТОВ СРЕДСТВАМИ ФИЗИЧЕСКОЙ КУЛЬТУРЫ И СПОРТА

      OpenAIRE

      Мезенцева, В.

      2013-01-01

      Modern work requires a signifi cant stress of intellectual, mental and physical strength, in- creased coordination of movements of workers in any fi eld of labour. But every profession dictates the level of development of mental and physical qualities, its list of professionally-applied skills

    15. Perakendeci Piyasalarinda RFID Sistemleri

      OpenAIRE

      Ela Sibel BAYRAK MEYDANOGLU

      2009-01-01

      RFID (Radio Frequency Identification - Radyo Frekansi ile Tanimlama) sistemi kullanimi perakendecilere stok yonetiminde iyilesme, emniyet stoklarinda, stok maliyetlerinde, iscilik giderlerinde azalma, fire miktar ve nedenleri hakkinda dogru bilgi edinme, magaza alanini daha verimli kullanma, sureclerde hizlanma, musteri memnuniyetinde artis, calinma olaylarini daha etkin sekilde izleme gibi faydalar saglar. Elde edilen bu faydalar sayesinde azalan maliyetler ve artan musteri memnuniyeti, sist...

    16. Regular physical activity in old age. Effect on coronary heart disease risk factors and well- being.

      NARCIS (Netherlands)

      Schuit, A.J.

      1997-01-01

      Background. Regular physical activity is considered an important aspect of a healthy lifestyle. It may improve fitness, physical competence and may lower the risk of coronary heart disease (CHD). However, until now, data on the effects of regular exercise on CHD risk factors in elde

    17. Nuclear lattice simulations

      Directory of Open Access Journals (Sweden)

      Epelbaum E.

      2010-04-01

      Full Text Available We review recent progress on nuclear lattice simulations using chiral effective field theory. We discuss lattice results for dilute neutron matter at next-to-leading order, three-body forces at next-to-next-toleading order, isospin-breaking and Coulomb effects, and the binding energy of light nuclei.

    18. Field Independence: Reviewing the Evidence

      Science.gov (United States)

      Evans, Carol; Richardson, John T. E.; Waring, Michael

      2013-01-01

      Background: The construct of ?eld independence (FI) remains one of the most widely cited notions in research on cognitive style and on learning and instruction more generally. However, a great deal of confusion continues to exist around the de?nition of FI, its measurement, and the interpretation of research results, all of which have served to…

    19. Application of digital image correlation method for analysing crack variation of reinforced concrete beams

      Indian Academy of Sciences (India)

      Ming-Hsiang Shih; Wen-Pei Sung

      2013-08-01

      The Digital Image Correlation (DIC) method is a fast-growing emerging technology that provides a low-cost method for measuring the strain of an object. In this study, the feasibility of using this method to observe cracks developed in reinforced concrete beams will be explored so that a practical application can be proposed. The DIC method has been applied for analysing the field of surface displacement and strain; it is not applicable for measuring non-continuous field of displacement. However, if a singular point (i.e., crack points) can be considered as the area of concentrated strain by imitating the treatment of micro-cracks using the finite element method, the region of concentrated strain field based on analyses of digital images can be applied for determining the locations of cracks. Laboratory results show that cracks developed in reinforced cement beams can be observed with a good precision using the von Mises strain field, and that smaller grids lead to clearer crack images. In addition to identifying visible cracks, the DIC image analysis will enable researchers to identify minute cracks that are not visible to naked eyes. Additionally, the DIC method has more accuracy and precision than visual observation for analysing crack loadings so that earlier warnings can be realized before cracks develop in the specimen.

    20. Simulations and analysis of the Raman scattering and differential Raman scattering/Raman optical activity (ROA) spectra of amino acids, peptides and proteins in aqueous solution

      DEFF Research Database (Denmark)

      Jalkanen, Karl J.; Nieminen, R. M.; Bohr, Jakob

      2000-01-01

      shell which strongly interact with the molecule are treated explicitly while the waters in the bulk are treated by a continuum model. The structures are optimized and the harmonic force elds are calculated. The derivatives needed to simulate the Raman and ROA intensities are calculated from first...

    1. Waves in the core and mechanical core-mantle interactions

      DEFF Research Database (Denmark)

      Jault, D.; Finlay, Chris

      2015-01-01

      This Chapter focuses on time-dependent uid motions in the core interior, which can beconstrained by observations of the Earth's magnetic eld, on timescales which are shortcompared to the magnetic diusion time. This dynamics is strongly inuenced by the Earth's rapid rotation, which rigidies the mo...... of the induction equation from Ohm's law and Maxwellequations, as presented in Chapter (8.03)....

    2. Temperature hysteretic effect and its influence on colossal magnetoresistance of La0.33Nd0.33Ca0.33MnO3

      Indian Academy of Sciences (India)

      Darshan C Kundaliya; Reeta Vij; A A Tulapurkar; U Vaidya; R Pinto; R G Kulkarni

      2002-05-01

      Electrical resistance () measurements of a bulk La0.33Nd0.33Ca0.33MnO3 perovskite in magnetic fields up to 40 kOe have revealed anomalous temperature hysteretic effects both in 0 Oe and 20 kOe magnetic fields. The sharp peak observed in the vs. plot indicates the occurrence of metal-to-insulator (M–I) transition at a temperature of MI = 110 K and 140 K, for cooling and warming paths, respectively. An applied magnetic field of 20 kOe reduces the resistance and shifts MI to 160 K and 185 K for cooling and warming, respectively. We have observed a much higher resistance in the cooling path than in the warming path leading to the hysteretic resistance ratio (cool/warm) of 200 at 110 K and 1.8 at 160 K for 0 Oe and 20 kOe, respectively. Record values of colossal magnetoresistance (CMR) have been achieved. The CMR value reaches nearly 99% in the temperature ranges of 90 K to 140 K and 90 K to 170 K for 20 kOe and 40 kOe magnetic fields in the cooling mode, respectively. The observed unusual behavior is attributed to the co-existence of La-rich and Nd-rich domains assumed to be distributed randomly in the compound.

    3. Physicians' experiences with end-of-life decision-making: survey in 6 European countries and Australia

      DEFF Research Database (Denmark)

      Löfmark, Rurik; Nilstun, Tore; Cartwright, Colleen;

      2008-01-01

      euthanasia or physician-assisted suicide. Foregoing treatment and intensifying alleviation of pain and symptoms are practiced and accepted by most physicians in all countries. Physicians with training in palliative care are more inclined to perform ELDs, as are those who attend to higher numbers of terminal...

    4. Numerical study for production of space charge within the stratiform cloud

      Indian Academy of Sciences (India)

      A K Srivastava; S N Tripathi

      2010-10-01

      One dimensional numerical model has been developed to predict the production of space charge and variations in other electrical parameters within the low level stratiform type of cloud having very weak vertical motion.Non-linear coupled differential equations which govern ion concentrations,charged and neutral droplet concentrations and electric field were used.Symmetry has been observed in all the electrical parameters within the cloud.The magnitude of average positive ion concentrations was observed to be high as compared to the negative ion concentrations,which is due to low scavenging rate of positive ions than the negative ions,highly attributed to their mobilities.The rate of scavenging of ions affects the concentration of charged droplets,which eventually influence the electric field and thus the space charge density within the cloud.Maximum electric field (max) was observed at middle of the cloud whereas minimum was observed at both the edges of the cloud.Minimum electric field (min) was found to be equal and constant (∼27Vm−1)for any drop concentration.Net positive and negative space charges were observed at the top and bottom of the cloud,respectively.The simulated results show some discrepancies to the natural condition, which are due to simulations made under some basic assumptions and limitations and that will be incorporated in the future studies for natural cloud condition.

    5. A higher-dimensional Bianchi type-I inflationary Universe in general relativity

      Indian Academy of Sciences (India)

      S D Katore; K S Adhav; V G Mete; A Y Shaikh

      2012-01-01

      A five-dimensional Bianchi type-I inflationary Universe is investigated in the presence of massless scalar field with a flat potential. To get an inflationary Universe, a flat region in which the potential is constant is considered. Some physical and kinematical properties of the Universe are also discussed.

    6. Recent advances in lattice gauge theories

      Indian Academy of Sciences (India)

      R V Gavai

      2000-04-01

      Recent progress in the field of lattice gauge theories is briefly reviewed for a nonspecialist audience. While the emphasis is on the latest and more definitive results that have emerged prior to this symposium, an effort has been made to provide them with minimal technicalities.

    7. Symmetry structure and phase transitions

      Indian Academy of Sciences (India)

      Ashok Goyal; Meenu Dahiya; Deepak Chandra

      2003-05-01

      We study chiral symmetry structure at finite density and temperature in the presence of external magnetic field and gravity, a situation relevant in the early Universe and in the core of compact stars. We then investigate the dynamical evolution of phase transition in the expanding early Universe and possible formation of quark nuggets and their survival.

    8. Bianchi type I inflationary universe in general relativity

      Indian Academy of Sciences (India)

      Raj Bali; Vimal Chand Jain

      2002-07-01

      In this paper, we have investigated Bianchi type I inflationary universe in the presence of massless scalar field with a flat potential. To get an inflationary solution, we have considered a flat region in which potential is constant. The inflationary scenario of the model is discussed in detail.

    9. Test particle trajectories near cosmic strings

      Indian Academy of Sciences (India)

      Farook Rahaman; Subenoy Chakraborty; K Maity

      2002-01-01

      We present a detailed analysis of the motion of test particle in the gravitational field of cosmic strings in different situations using the Hamilton–Jacobi (H–J) formalism. We have discussed the trajectories near static cosmic string, cosmic string in Brans–Dicke theory and cosmic string in dilaton gravity.

    10. Preface

      DEFF Research Database (Denmark)

      Ystad, S.; Kronland-Martinet, R.; Jensen, K.

      2009-01-01

      proceedings volume. The field of computer music embraces a large number of research areas that span from information retrieval, programming, artificial intelligence to acous- tics, signal processing and sound modeling. In the last CMMR gatherings an increased emphasis was placed on the role of human interaction...

    11. Protein-Tyrosine Phosphorylation in Bacillus subtilis

      DEFF Research Database (Denmark)

      Mijakovic, Ivan; Petranovic, Dina; Bottini, N.; Deutscher, J.; Jensen, Peter Ruhdal

      2005-01-01

      phosphorylation, indicating that this post-translational modifi cation could regulate physiological processes ranging from stress response and exopolysaccharide synthesis to DNA metabolism. Some interesting work in this fi eld was done in Bacillus subtilis , and we here present the current state of knowledge on...

    12. Large compact dimensions and high energy experiments

      Indian Academy of Sciences (India)

      Sreerup Raychaudhuri

      2000-07-01

      Models of spacetime with extra compact dimensions and having the Standard Model fields confined to a narrow slice of 4-dimensional spacetime can have strong gravitational effects at the TeV scale as well as electroweak-strength interactions at present-day colliders. Phenomenological consequences of such models are reviewed, with special emphasis on collider signatures.

    13. Care Competence in Nursing Education

      OpenAIRE

      Bagnasco, Annamaria; Rosa, Francesca; Aleo, Giuseppe; Sasso, Loredana

      2012-01-01

      We present this commentary to discuss the main European initiatives and issues regarding education for health professionals, specifi cally nurses, both to stimulate international debate and to learn more about what is happening in this fi eld in other continents.(Published: 26 April 2012)Keywords: nursing education , competence , critical thinking , competence-based education DOI: 10.3109/21614083.2012.677711

    14. Nanosensors – a promising tool for cancer research

      DEFF Research Database (Denmark)

      Andersen, E.M.

      2006-01-01

      Human cell biology is emerging as a new fi eld of research at Risø. Risø’s plant scientists are able to apply their unique expertise within the analysis and manipulation of individual cells to conduct research into human cells. Risø’s core competence inthis area centres, in particular...

    15. Effect of resistance-type exercise training with or without protein supplementation on cognitive functioning in frail and pre-frail elderly: Secondary analysis of a randomized, double-blind, placebo-controlled trial

      NARCIS (Netherlands)

      Nieuwerth-van de Rest, O.; Zwaluw, van der N.L.; Tieland, C.A.B.; Adam, J.J.; Hiddink, G.J.; Loon, van L.J.C.; Groot, de C.P.G.M.

      2014-01-01

      Physical activity has been proposed as one of the most effective strategies to prevent cognitive decline. Protein supplementation may exert an additive effect. The effect of resistance-type exercise training with or without protein supplementation on cognitive functioning in frail and pre-frail elde

    16. An Algorithm for the Decomposition of Semisimple Lie Algebras

      NARCIS (Netherlands)

      Graaf, W.A. de

      2001-01-01

      We consider the problem of decomposing a semisimple Lie algebra dened over a eld of characteristic zero as a direct sum of its simple ideals The method is based on the decomposition of the action of a Cartan subalgebra An implementation of the algorithm in the system ELIAS is discussed at the end of

    17. Review of Recovery Mechanisms of Ionically Modi fi ed Water fl ood in Carbonate Reservoirs

      DEFF Research Database (Denmark)

      Sohal, Muhammad Adeel Nassar; Thyne, Geoffrey; Søgaard, Erik Gydesen

      2016-01-01

      . This process has been evaluated as a wettability-modifying agent in carbonates and captured the global research focus in water-based enhanced oil recovery (EOR) methods. This paper provides a comprehensive review of the published research to speed the process of further investigations in this field. The...

    18. A "proof-reading" of Some Issues in Cryptography

      DEFF Research Database (Denmark)

      Damgård, Ivan Bjerre

      2007-01-01

      In this paper, we identify some issues in the interplay between practice and theory in cryptography, issues that have repeatedly appeared in different incarnations over the years. These issues are related to fundamental concepts in the eld, e.g., to what extent we can prove that a system is secure...

    19. THE SCHOOL OF ECOLOGICAL CHEMISTRY FOUNDED BY ACADEMICIAN GHEORGHE DUCA

      OpenAIRE

      Tudor Lupascu; Maria Gonta; Viorica Gladchi

      2009-01-01

      This review details the most important achievements in the fi eld of ecological chemistry and environmental protection, obtained at the State University of Moldova and Institute of Chemistry of the Academy of Sciences of Moldova. The main research directions are described, as well as main scientific laboratories and centres of these two institutions.

    20. CP violation: the past, the present and the future

      Indian Academy of Sciences (India)

      A I Sanda

      2000-07-01

      We have just entered a period during which we expect considerable progress toward understanding CP violation. Here we review what we have learnt so far, and what is to be expected in the near future. To do this we cover the foundation of CP violation at a level which can be understood by physicists who are not working in this field.

    1. Supplementary information to: Forces between a partially coherent fuctuating source and a magnetodielectric particle

      CERN Document Server

      Auñon, Juan Miguel

      2013-01-01

      This is the supplementary information to arXiv:1303.4545v1 [physics.optics] 19 Mar 2013 in which we address the forces exerted by the electromagnetic ?eld emitted by a planar uctuating source on dielectric particles that have arose much interest because of their recently shown magnetodielectric behavior.

    2. Relativistic heavy-ion physics: Experimental overview

      Indian Academy of Sciences (India)

      Itzhak Tserruya

      2003-04-01

      The field of relativistic heavy-ion physics is reviewed with emphasis on new results and highlights from the first run of the relativistic heavy-ion collider at BNL and the 15 year research programme at the super proton synchrotron (SPS) at CERN and the AGS at BNL.

    3. Konstantin Kossatshov : Dialoga s etim pravitelstvom ne budjet / Konstantin Kossatshov ; interv. Jana Litvinova

      Index Scriptorium Estoniae

      Kossatshov, Konstantin

      2007-01-01

      Venemaa Riigiduuma väliskomisjoni esimees rääkis Eesti ja Venemaa suhetest, öeldes et riikide suhete paranemine Andrus Ansipi juhitava valitsuse ajal pole ilmselt võimalik ja suhete halva seisu eest lasub vastutus Eesti valitsusel ning kritiseeris aprillisündmusi seoses pronkssõduri teisaldamisega, samuti suhtumist venekeelsesse elanikkonda

    4. Correction: Vázquez-Arellano, M., et al. 3-D Imaging Systems for Agricultural Applications—A Review. Sensors 2016, 16, 618

      Directory of Open Access Journals (Sweden)

      Manuel Vázquez-Arellano

      2016-07-01

      Full Text Available The authors wish to make the following corrections to Table 1 of the title paper [1]: the working environment of the PlantEye platform should be changed from “Greenhouse” to “Open field, Greenhouse” and the shadowing device of the Scanalyzer platform should be changed from “‘√” to “x”. [...

    5. Finite-bias conductance anomalies at a singlet-triplet crossing

      DEFF Research Database (Denmark)

      Stevanato, Chiara; Leijnse, Martin Christian; Flensberg, Karsten;

      2012-01-01

      Quantum dots and single-molecule transistors may exhibit level crossings induced by tuning external parameters such as magnetic eld or gate voltage. For Coulomb blockaded devices, this shows up as an inelastic cotunneling threshold in the dierential conductance, which can be tuned to zero at the...

    6. Gear fatigue damage for a 500 kW wind turbine exposed to increasing turbulence using a flexible multibody model

      DEFF Research Database (Denmark)

      Jørgensen, Martin Felix; Pedersen, Niels Leergaard; Sørensen, Jens Nørkær

      2014-01-01

      This paper investigates gear tooth fatigue damage in a 500 kW wind turbine using FLEX5 and own multibody code. FLEX5 provides the physical wind eld, rotor and generator torque and the multibody code is used for obtaining gear tooth reaction forces in the planetary gearbox. Dierent turbulence levels...

    7. Mitmekesisus ühenäolisuse asemel: suundumused arhitektuuris ja poliitikas 1980-ndate lõpul = Diversity versus uniformity: tendencies in architecture and politics since the late 1980`s / Udo Kultermann ; tõlkinud Jüri Pärni

      Index Scriptorium Estoniae

      Kultermann, Udo

      1993-01-01

      Endise Nõukogude Liidu ja sotsialistlike maade arhitektuuri suunamisel ei domineeri enam bürokraatlik tsentraliseeritud juhtimissüsteem. Arhitektid ja tellijad hakkavad otsuste tegemisel arvestama kohalikke ja regionaalseid olusid, mis on inimkesksemad, öeldes lahti poliitilisest ja kultuurilisest ühenäolisusest

    8. Heavy ion accelerator and associated developments in India

      Indian Academy of Sciences (India)

      G K Mehta

      2002-11-01

      Developments of ion accelerator and associated facilities in India are presented. Various types of accelerator facilities which are systematically built in the country through sustained development and research programs at various research centres and institutions are highlighted. Impact of accelerator in different interdisciplinary fields of research are highlighted.

    9. Calculation of critical fault recovery time for nonlinear systems based on region of attraction analysis

      DEFF Research Database (Denmark)

      Tabatabaeipour, Mojtaba; Blanke, Mogens

      2014-01-01

      of a system. It must be guaranteed that the trajectory of a system subject to fault remains in the region of attraction (ROA) of the post-fault system during this time. This paper proposes a new algorithm to compute the critical fault recovery time for nonlinear systems with polynomial vector elds using sum...

    10. Embedded System for ECG Biometrics

      OpenAIRE

      Matos, André Cigarro; Lourenço, André; Nascimento, José M. P.

      2013-01-01

      Comunication in Internationa Conference with Peer Review First International Congress on Cardiovasular Technologies - CARDIOTECHNIX, Vilamoura, Portugal, 2013 Biometric recognition has recently emerged as part of applications where the privacy of the information is crucial, as in the health care field. This paper presents an embedded system for individual recognition based on Electrocardiographic (ECG) biometrics. The proposed system implements a real...

    11. Astronomical Content in Rongorongo Tablet Keiti

      DEFF Research Database (Denmark)

      Wieczorek, Rafal

      2011-01-01

      Th e fi eld of rongorongo research: the study of Easter Island’s native script is in a peculiar state at the moment. While relative progress has been made in structural and statistical analysis in the last decades, at the level of both single glyphs as well as entire texts, little to no advancement...

    12. Metformin protects the skeletal muscle glycogen stores against alterations inherent to functional limitation

      Directory of Open Access Journals (Sweden)

      Paula Lima Bosi

      2008-04-01

      Full Text Available The aim of this study was to evaluate the glycogen content (GC of the rat hind limb muscles submitted to joint immobilization, either associated with metformin treatment (M, 1,4mg.ml-1 or not. In the metformin group, there was a significant increase in the GC (soleus - S 65% , white gastrocnemius - WG 30.5%, red gastrocnemius- RG31.7%, extensor digitorum longus - EDL 44%, tibialis anterior- TA 77.4%. The immobilization significantly reduced the GC (S 31.6%, WG 56.6%, RG 39.1%, ELD 41.7%, TA 45.2% and weight (S 34.2% and ELD 27%, whereas in the group immobilized with the metformin, there was an increase in the GC of all the muscles (S 177%, WG 290%, RG 172%,ELD 47%, TA 217%, in addition to minimizing the weight loss of S (29.6% and ELD (27.8%.O objetivo deste estudo foi avaliar o conteúdo de glicogênio (GLI da musculatura da pata posterior de ratos submetidos à imobilização articular, associado ou não ao tratamento com metformina (MET, 1,4 mg.ml -1 no período de sete dias. No grupo metformina, houve elevação significativa nas RG (65% no sóleo - S, 30.5% no gastrocnêmio branco - GB, 31.7% no gastrocnêmio vermelho - GV , 44% no extensor longo dos dedos - EDL e de 77.4% no tibial anterior - TA . A imobilização reduziu significativamente as RG (S 31,6%, GB 56,6%, GV 39,1%, ELD 41,7%, TA 45,2% e peso (S 34,2% e ELD 27%, já no grupo imobilizado com metformina houve o aumento das RG de todos os músculos (S 177%, GB 290%, GV 172%,EDL 47%, TA 217%, além de minimizar a perda de peso do S (29,6% e ELD (27,8%.

    13. Treatment of osteoporosis with eldecalcitol, a new vitamin D analog: a comprehensive review and meta-analysis of randomized clinical trials

      Directory of Open Access Journals (Sweden)

      Xu Z

      2016-01-01

      Full Text Available Zhixing Xu,1 Changchun Fan,2 Xuechun Zhao,3 Hairong Tao1 1Department of Orthopedic Surgery, The Third People’s Hospital Affiliated to Shanghai Jiaotong University School of Medicine, Shanghai, People’s Republic of China; 2Department of Orthopedic Surgery, Jinan Military General Hospital, 3Department of Orthopedic Surgery, The Third Hospital of Jinan City, Jinan, People’s Republic of China Objective: Eldecalcitol (ELD is an active form of vitamin D analog that has been approved for the treatment of osteoporosis in Japan. Over recent years, a number of multicenter, randomized controlled clinical trials have been conducted. Our goal is to comprehensively summarize the results from these studies.Methods: We searched the databases MEDLINE, EMBASE, and Cochrane Central Register of Controlled Trials up to February 28, 2015. Each database was searched using search terms “Eldecalcitol” and “ED-71” and the results were combined. The retrieved data from three independent clinical trials included a total of 1,332 patients with osteoporosis. After the data were pooled from three trials, RevMan software was used to conduct meta-analyses to determine the effects of ELD on bone mineral density (BMD and bone turnover marker (BTM type I collagen amino-terminal telopeptide (NTX. Effects of ELD on some of the bone formation and bone resorption parameters, incidence of vertebral fractures at the lower spine, and health-related quality of life (HRQOL in patients with osteoporosis were also summarized. Results: With a test for overall effect Z=6.35, ELD could increase lumbar BMD (P<0.00001. In comparison with alphacalcidol, ELD suppressed the NTX level to a greater degree (test for overall effect Z=3.82, P<0.0001. ELD was also found to suppress bone alkaline phosphatase (BALP by 19% (P<0.01 and osteocalcin by 19% (P<0.01 at the dose of 0.75 µg/day. Compared to alfacalcidol, ELD showed higher potency in suppressing serum BALP (26±9 vs 32±11 U/L, P<0

    14. varying elastic parameters distributions

      KAUST Repository

      Moussawi, Ali

      2014-12-01

      The experimental identication of mechanical properties is crucial in mechanics for understanding material behavior and for the development of numerical models. Classical identi cation procedures employ standard shaped specimens, assume that the mechanical elds in the object are homogeneous, and recover global properties. Thus, multiple tests are required for full characterization of a heterogeneous object, leading to a time consuming and costly process. The development of non-contact, full- eld measurement techniques from which complex kinematic elds can be recorded has opened the door to a new way of thinking. From the identi cation point of view, suitable methods can be used to process these complex kinematic elds in order to recover multiple spatially varying parameters through one test or a few tests. The requirement is the development of identi cation techniques that can process these complex experimental data. This thesis introduces a novel identi cation technique called the constitutive compatibility method. The key idea is to de ne stresses as compatible with the observed kinematic eld through the chosen class of constitutive equation, making possible the uncoupling of the identi cation of stress from the identi cation of the material parameters. This uncoupling leads to parametrized solutions in cases where 5 the solution is non-unique (due to unknown traction boundary conditions) as demonstrated on 2D numerical examples. First the theory is outlined and the method is demonstrated in 2D applications. Second, the method is implemented within a domain decomposition framework in order to reduce the cost for processing very large problems. Finally, it is extended to 3D numerical examples. Promising results are shown for 2D and 3D problems.

    15. Static charged spheres with anisotropic pressure in general relativity

      Indian Academy of Sciences (India)

      J Krishna Rao; M Annapurna; M M Trivedi

      2000-02-01

      We report a generalization of our earlier formalism [Pramana, 54, 663 (1998)] to obtain exact solutions of Einstein–Maxwell's equations for static spheres filled with a charged fluid having anisotropic pressure and of null conductivity. Defining new variables: = (4/3)(ρ+)2, =4 2, r=4 pr2, ⊥}=4 ⊥2 [ρ,(=-(1/2)1414), r, ⊥ being respectively the energy densities of matter and electrostatic fields, radial and transverse fluid pressures whereas denotes the eigenvalue of the conformal Weyl tensor and interpreted as the energy density of the free gravitational field], we have recast Einstein's field equations into a form easy to integrate. Since the system is underdetermined we make the following assumptions to solve the field equations (i) =r=(2}/2)+2, ⊥=k1r, =2r; 2, (> 0), 1, 2 being constants with =((1+2)/3+2) and (ii) +=(2/2)+2, =r, ⊥-r=, with and as constants. In both cases the field equations are integrated completely. The first solution is regular in the metric as well as physical variables for all values of > 0. Even though the second solution contains terms like /2 since (0) = 0 it is argued that the pressure anisotropy, caused by the electric flux near the centre, can be made to vanish reducing it to the generalized Cooperstock–de la Cruz solution given in [14]. The interior solutions are shown to match with the exterior Reissner–Nordstrom solution over a fixed boundary.

    16. Depositional conditions of the coal-bearing Hirka Formation beneath Late Miocene explosive volcanic products in NW central Anatolia, Turkey

      Indian Academy of Sciences (India)

      Mehmet Şener

      2007-04-01

      This work focuses on the relationship between the coal deposition and explosive volcanism of the Miocene basin, NW central Anatolia, Turkey. The coal-bearing Hirka Formation was deposited over the Galatian Andesitic Complex and/or massive lagoonal environments during the Miocene. The investigated lignite is a high ash (from 32 to 58%) and sulphur (from 1.43 to 3.03%) lignite which is petrographically characterised by a high humunite content. The mineral matter of the studied lignite samples is made up of mainly clay minerals (illite–smectite and kaolinite), plagioclase and quartz in Bolu coal field, clay minerals (illite–smectite, smectite and illite), quartz, calcite, plagioclase and gypsum in Seben coal field, quartz, K-feldspar, plagioclase and clay minerals (kaolinite and illite) in Kıbrıscık, and dolomite, quartz, clinoptilolite, opal CT and gypsum in C¸ amlıdere coal field. The differences in these four types of lignite with specific mineralogical patterns may be due to the explosive volcanic events and depositional conditions which changed from one coal field to the others. There is a zonation from SW to SE in the studied area for zeolites such as Opal CT+smectite-clinoptilolite-analcime-K-feldspar. Carbonate minerals are commonly calcite in Seben and Kıbrıscık coal fields. In Bolu, coal samples are devoid of calcite and dolomite. These analyses show that there is an increase in the amount of Mg and a decrease in the amount of Na from the northwestern part to the southern part in the study area.

    17. Comparison of the effects of 12 months of monthly minodronate monotherapy and monthly minodronate combination therapy with vitamin K2 or eldecalcitol in patients with primary osteoporosis.

      Science.gov (United States)

      Ebina, Kosuke; Noguchi, Takaaki; Hirao, Makoto; Kaneshiro, Shoichi; Tsukamoto, Yasunori; Yoshikawa, Hideki

      2016-05-01

      The aim of this observational, nonrandomized study was to compare the effects of 12 months of monthly minodronate (MIN; 50 mg/month) monotherapy and MIN combination therapy with vitamin K2 (VK; 45 mg/day) or eldecalcitol (ELD; 0.75 μg/day) in treatment-naïve patients with primary osteoporosis. Patients (n = 193; 178 postmenopausal women and 15 men; mean age 71.6 years) were treated with (1) MIN monotherapy (n = 63), (2) MIN plus VK combination therapy (n = 50), or (3) MIN plus ELD combination therapy (n = 80) for 12 months. Changes in bone mineral density (BMD) and the levels of serum bone turnover markers were monitored. No significant difference was observed in baseline BMD among the three groups. After 12 months, BMD increased by 2.93, 4.65, and 6.55 % in the lumbar spine, 0.66, 2.57, and 3.42 % in the total hip, and 0.05, 2.06, and 3.58 % in the femoral neck in groups 1, 2, and 3, respectively. The BMD increase induced by MIN plus ELD combination therapy was significantly greater than that induced by MIN monotherapy in the lumbar spine (P = 0.0002), total hip (P = 0.003), and femoral neck (P = 0.004), and also that induced by MIN plus VK combination therapy in the lumbar spine (P = 0.03). MIN plus ELD combination therapy compared with MIN monotherapy resulted in a greater decrease in serum procollagen type I N-terminal propeptide levels (-37.4 % vs -54.6 %; P = 0.001) and tartrate-resistant acid phosphatase isoform 5b levels (-41.1 % vs -52.9 %; P = 0.009) at 3 months, and a greater decrease in procollagen type I N-terminal propeptide levels (-64.3 % vs -50.3 %; P = 0.03) and a decrease in intact parathyroid hormone levels (-12.3 % vs 14.0 %; P = 0.01) at 12 months. Combination therapy with MIN and VK or ELD for 12 months showed additive effects in decreasing the levels of bone turnover markers compared with MIN monotherapy, whereas MIN plus ELD combination therapy resulted in the highest BMD increase compared

    18. ESKISEHIR LOCAL PRESS FROM LOCAL PRESS MANAGERS POINT OF VIEW

      OpenAIRE

      Birsen, Yrd.Doç.Dr. Haluk

      2011-01-01

      Bu çalışmada birbirini ikame eden ya da tamamlayan birden fazla medyayı gün içinde kullanma yetisine sahip izlerkitlenin haber talebini karşılamak, bu yolla ekonomik bir girdi elde etmek, elde edilen girdi ile varlığını sürdürmek zorunda olan yerel basının sorunları, Eskişehir Yerel Basını yöneticilerinin ağzından dinlenmiş ve derlenmiştir. Bu yanıyla betimleyici bir çalışma olan araştırmada amaca ulaşmak için nitelikli çalışan gereksinimi, teknoloji sahipliği ve haber kaynakları ile kurulan ...

    19. Effect of ionized plasma medium on the radiation from a RITMA structure on ferrite substrate

      Indian Academy of Sciences (India)

      V Bhardwaj; V K Tiwari; D Bhatnagar; J S Saini; K B Sharma

      2003-12-01

      This paper presents theoretical investigations on the radiation properties of a right isosceles triangular microstrip antenna (RITMA) printed on a magnetized ferrite substrate Ni0.62Co0.02Fe1.948O4 in the presence of ionized plasma medium. The theoretical study on RITMA structure in free space is carried out in TM11 mode of excitation by applying cavity model-based modal expansion technique while hydrodynamic theory is used for its analysis in plasma medium. By varying the bias magnetic field, far-field radiation patterns in free space and plasma medium are obtained which in turn are applied in computing radiated power, directivity, quality factor and bandwidth of antenna. It is found that the presence of plasma medium affects the performance of RITMA structure significantly.

    20. The increasing meaning of industrial communication. New chances and challenges for systems and components; Die zunehmende Bedeutung der industriellen Kommunikation. Neue Moeglichkeiten und Herausforderungen fuer Systeme und Komponenten

      Energy Technology Data Exchange (ETDEWEB)

      Kegel, Gunther [Pepperl+Fuchs GmbH, Mannheim (Germany)

      2009-07-01

      In process control, data are exchanged vertically from the fi eld level to the control system and horizontally within the process control levels as well as within neighboring phases of the life cycle. Open, scalable system architectures demand standardized communication structures that have adjusted to the increasing requirements to communication in automation of plants of process industry in the last decades. Technologically related systems and solutions of other application fi elds have influenced especially the communication within process control. In the near future, Ethernet applications and wireless communication of other domains are capable to be applied in process engineering. The paper deals with the history of recent communication standards and topologies and tries to give an outlook on the meaning of new technologies. Emphasis is placed on the physical layer, i.e. the communication structure. (orig.)

    1. EEL-mapping of plasmon modes on a silver nano disk

      International Nuclear Information System (INIS)

      Full text: Localized surface plasmons are collective oscillations of the conducting electrons of metal nano structures coupled to an evanescent electromagnetic eld. We study the plasmonic eigenmodes of a silver nano disk with laterally resolved electron energy loss spectroscopy (EELS) and observe - beside the well-known dipolar, quadrupolar, hexapolar etc. modes - a new type of modes which we name breathing modes analogous to acoustic vibrations. The surface charge distributions of dipolar and multipolar modes show radial node lines whereas the node lines of breathing modes are circles. These breathing modes are elementary plasmonic excitations of metal nano disks which have not been observed up to now as they do not couple to propagating light fields efficiently. This means these modes can hardly be detected by optical far eld spectroscopy and they are therefore called 'dark' modes. Nevertheless these modes affect the coupling of nano disks with molecular dipoles or other metal nano structures. (author)

    2. Service Oriented Robotic Architecture for Space Robotics: Design, Testing, and Lessons Learned

      Science.gov (United States)

      Fluckiger, Lorenzo Jean Marc E; Utz, Hans Heinrich

      2013-01-01

      This paper presents the lessons learned from six years of experiments with planetary rover prototypes running the Service Oriented Robotic Architecture (SORA) developed by the Intelligent Robotics Group (IRG) at the NASA Ames Research Center. SORA relies on proven software engineering methods and technologies applied to space robotics. Based on a Service Oriented Architecture and robust middleware, SORA encompasses on-board robot control and a full suite of software tools necessary for remotely operated exploration missions. SORA has been eld tested in numerous scenarios of robotic lunar and planetary exploration. The experiments conducted by IRG with SORA exercise a large set of the constraints encountered in space applications: remote robotic assets, ight relevant science instruments, distributed operations, high network latencies and unreliable or intermittent communication links. In this paper, we present the results of these eld tests in regard to the developed architecture, and discuss its bene ts and limitations.

    3. Optimisation-Based Solution Methods for Set Partitioning Models

      DEFF Research Database (Denmark)

      Rasmussen, Matias Sevel

      _cient with respect to solution quality and solution time. Enhancement of the overall solution quality as well as the solution time can be of vital importance to many organisations. The _elds of operations research and mathematical optimisation deal with mathematical modelling of di_cult scheduling problems (among...... other topics). The _elds also deal with the development of sophisticated solution methods for these mathematical models. This thesis describes the set partitioning model which has been widely used for modelling crew scheduling problems. Integer properties for the set partitioning model are shown......, and exact and optimisation-based heuristic solution methods for the model are described. All these methods are centered around the wellknown column generation technique. Di_erent practical applications of crew scheduling are presented, and some of these applications are considered in detail in four included...

    4. Bianchi Type-II inflationary models with constant deceleration parameter in general relativity

      Indian Academy of Sciences (India)

      C P Singh; S Kumar

      2007-05-01

      Einstein's field equations are considered for a locally rotationally symmetric Bianchi Type-II space–time in the presence of a massless scalar field with a scalar potential. Exact solutions of scale factors and other physical parameters are obtained by using a special law of variation for Hubble's parameter that yields a constant value of deceleration parameter. To get inflationary solutions, a flat region is considered in which the scalar potential is constant. Power-law and exponential cases are studied and in both solutions there is an anisotropic expansion of the cosmic fluid, but the fluid has vanishing vorticity. A detailed study of geometrical and kinematical properties of solutions has been carried out.

    5. Bazı alglerin antibakteriyal etkileri

      OpenAIRE

      DEMİRİZ, Tugba

      2008-01-01

        Bu çalışmada uygun kültür koşullarında üretilen, çeşitli alg türlerinin ( Oscillatoria limosa, Oscillatoria limnetica, Phormidium tenue, Chlorella vulgaris, Spirulina major ) farklı çözgenler ( Metanol, Etanol, N-butanol, Aseton, Hekzan, 0.5 M Tris-HCL pH:8.00 ) kullanarak elde edilen ekstraktlarının antibakteriyal aktiviteleri araştırılmıştır.

        Elde edilen ekstraktların antibakteriyal etkileri disk difüzyon yöntemi kullanıl...

    6. 老年类风湿关节炎的临床特点

      Institute of Scientific and Technical Information of China (English)

      陈海娟; 杨春梅

      2009-01-01

      类风湿关节炎(Rheumatoid arthritis,RA)是一种以关节滑膜组织慢性炎症性病变为主要表现的自身免疫性疾病,以女性多见,可发生在任何年龄,发病高峰年龄为30~50岁。RA初发症状出现在60岁以后称为老年类风湿关节炎(eldly rheumatoid arthritis,ERA)。为探讨ERA的临床特点,收集我院ERA患者33例,与同期非老年类风湿关节炎(non—eldly rheumatoid arthritis,NERA)患者80例的临床资料进行对照分析。

    7. Measurement of peak fluence of neutron beams using Bi-fission detectors

      Indian Academy of Sciences (India)

      R K Jain; Ashok Kumar; N L Singh; L Tommasino; B K Singh

      2012-03-01

      Fission fragments and other charged particles leave tracks of permanent damage in most of the insulating solids. Damage track detectors are useful for personal dosimeters and for flux/dose determination of high-energy particles from accelerators or cosmic rays. A detector that has its principal response at nucleon energy above 50 MeV is provided by the fission of Bi-209. Neutrons produce the largest percentage of hadron dose in most high-energy radiation fields. In these fields, the neutron spectrum is typically formed by low-energy neutrons (evaporation spectrum) and high-energy neutrons (knock-on spectrum). We used Bi-fission detectors to measure neutron peak fluence and compared the result with the calculated value of neutron peak fluence. For the exposure to 100 MeV we have used the iThemba Facility in South Africa.

    8. Methods of Solving Ill-Posed Problems

      CERN Document Server

      Srinivasamurthy, Suresh B

      2012-01-01

      Many physical problems can be formulated as operator equations of the form Au = f. If these operator equations are ill-posed, we then resort to finding the approximate solutions numerically. Ill-posed problems can be found in the ?elds of mathematical analysis, mathematical physics, geophysics, medicine, tomography, technology and ecology. The theory of ill-posed problems was developed in the 1960's by several mathematicians, mostly Soviet and American. In this report we review the methods of solving ill-posed problems and recent developments in this ?eld. We review the variational regularization method, the method of quasi-solution, iterative regularization method and the dynamical systems method. We focus mainly on the dynamical systems method as it is found that the dynamical systems method is more effi?cient than the regularization procedure.

    9. BRINE SHRIMP LETHALITY BIOASSAY OF GLAUCIUM GRANDIFLORUM VAR. GRANDIFLORUM

      OpenAIRE

      A. SARI, Ç. ÜNSAL, İ. SARIOĞLU, A. SARI, Ç. ÜNSAL, İ. SARIOĞLU

      2013-01-01

      Türkiye'nin 3 farklı bölgesinden toplanan Glaucium grandiflorum Boiss. et Huet var. grandiflorum örneklerinin toprak üstü kısımlarından elde edilen alkaloit ekstreleri ve bu ekstrelerden elde edilen majör alkaloitler allokriptopin, protopİn, (+)-izokoridin, (+)-korİdin üzerinde brİne shrimp lethality testi yapılarak sitotoksisiteleri İncelenmiştir. Glaucium grandiflorum var. grandiflorum türünün 3 örneği de önemli oranda sitotoksik aktİvite göstermiştir. Allokriptopin, protopin, (+)-izokoridi...

    10. Magnetism and superconductivity in ErNi2B2C

      Indian Academy of Sciences (India)

      N J Bancroft; D McK Paul; G McIntyre; C D Dewhurst; R Cubitt

      2002-05-01

      We have performed a series of neutron diffraction experiments from the magnetic order and the vortex lattice in single crystal ErNi2B2C. The incommensurate magnetic structure develops additional even harmonics below the `ferromagnetic' ordering temperature, F of 2.3 K. This feature and the existence of rods of diffuse scattering suggest the development of ferromagnetic microdomain walls. The magnetic structure is very sensitive to the application of a magnetic field with changes in modulation vector and harmonic content. Studies of the vortex lattice show the presence of a 45° reorientation transition and a distorted hexagonal to square transition as a function of applied field. Further distortions of the vortex lattice occur at N, but no changes are seen at F.

    11. Magnetization study of mercurocuprate (Hg,Re)Sr2CuO4+

      Indian Academy of Sciences (India)

      S Balamurugan; I K Gopalakrishnan; J V Yakhmi; P Selvam

      2002-05-01

      The nominal (Hg1-Re)Sr2CuO4+ ( = 0.10 and 0.20) samples were synthesized at ∼ 920° C in partial vacuum. The compound with =0.10 exhibits superconductivity at ∼ 54 K while the composition = 0.20 is non-superconducting down to 5 K. On cooling below 10 K in an applied field of 4 kOe, the former causes a noticeable upturn in the field cooled (FC) magnetization signal. Such a change in magnetic response is also reflected in the magnetic hysteresis loop generated at 9 K. We attribute this effect to a paramagnetic contribution arising from Re in (Hg,Re)-1201 phase.

    12. Flux line lattice symmetries in the borocarbide superconductor LuNi2B2C

      Indian Academy of Sciences (India)

      M R Eskildsen; A B Abrahamsen; P L Gammel; D J Bishop; N H Andersen; K Mortensen; P C Canfield

      2002-05-01

      We compare the results of small angle neutron scattering on the flux line lattice (FLL) obtained in the borocarbide superconductor LuNi2B2C with the applied field along the - and -axes. For $\\mathbf{H}||\\mathbf{c}$ the temperature dependence of the FLL structural phase transition from square to hexagonal symmetry was investigated. Above 10 K the transition onset field, 2(), rises sharply, bending away from c2() in contradiction to theoretical predictions of the two merging. For $\\mathbf{H}||\\mathbf{a}$ a first order FLL reorientation transition is observed at tr =3-3.5 kOe. Below tr the FLL nearest neighbor direction is parallel to the -axis, and above tr to the -axis. This transition cannot be explained using nonlocal corrections to the London model.

    13. Some new approaches to the study of the Earth's magnetic field reversals

      Directory of Open Access Journals (Sweden)

      G. Consolini

      2003-06-01

      Full Text Available Paleomagnetic studies clearly show that the polarity of the magnetic fi eld has been subject to reversals. It is generally assumed that polarity intervals are exponentially distributed. Here, the geomagnetic polarity reversal record, for the past 166 Ma, is analysed and a new approach to the study of the reversals is presented. In detail, the occurrence of 1/f-noise in the Power Spectral Density (PSD, relative to geomagnetic fi eld reversals, the existence of a Zipf's law behaviour for the cumulative distribution of polarity intervals, and the occurrence of punctuated equilibrium, as shown by a sort of Devil's staircase for the reversal time series, are investigated. Our results give a preliminary picture of the dynamical state of the geomagnetic dynamo suggesting that the geodynamo works in a marginally stable out-of-equilibrium confi guration, and that polarity reversals are equivalent to a sort of phase transition between two metastable states.

    14. Probing magnetochirality

      Indian Academy of Sciences (India)

      Rupamanjari Ghosh

      2002-08-01

      Magnetochiral anisotropy refers to the phenomenon that when light is passed through a chiral medium placed in an external magnetic field, the refractive index, or equivalently, the absorption encountered by the light differs depending on whether it travels parallel or antiparallel to the magnetic field. It is a very small effect, the change in refractive index because of this effect alone being of the order of 10-11. This effect has recently been measured in an active ring laser interferometer in which the detection scheme convincingly eliminates the contributions from natural optical activity, the Faraday effect and other stray anisotropies in the system. The phenomenon is important in the context of fundamental interactions between light and matter and the governing symmetry principles, and also in biochemistry as one possible explanation for the homochirality of life.

    15. THE PIXHAWK OPEN-SOURCE COMPUTER VISION FRAMEWORK FOR MAVS

      Directory of Open Access Journals (Sweden)

      L. Meier

      2012-09-01

      Full Text Available Unmanned aerial vehicles (UAV and micro air vehicles (MAV are already intensively used in geodetic applications. State of the art autonomous systems are however geared towards the application area in safe and obstacle-free altitudes greater than 30 meters. Applications at lower altitudes still require a human pilot. A new application field will be the reconstruction of structures and buildings, including the facades and roofs, with semi-autonomous MAVs. Ongoing research in the MAV robotics field is focusing on enabling this system class to operate at lower altitudes in proximity to nearby obstacles and humans. PIXHAWK is an open source and open hardware toolkit for this purpose. The quadrotor design is optimized for onboard computer vision and can connect up to four cameras to its onboard computer. The validity of the system design is shown with a fully autonomous capture flight along a building.

    16. Effect of surface stress and irregularity of the interface on the propagation of SH-waves in the magneto-elastic crustal layer based on a solid semi space

      Indian Academy of Sciences (India)

      D P Acharya; Indrajit Roy

      2009-04-01

      The object of the present paper is to investigate plane SH waves through a magneto-elastic crustal layer based over an elastic, solid semi space under the influence of surface stress on the free surface of the crustal layer and irregularity of the interface. Two types of irregularities of the interface namely, rectangular and parabolic have been considered. Modulations of wave velocity due to the presence of surface stress, irregularity and the magnetic field have been studied separately. Their combined effect has also been investigated. Graphs are drawn to highlight some important peculiarities. It is observed that surface stress, irregularity and magnetic field have their respective role to play in the propagation of SH waves in the crustal layer. Further modulation of wave velocity occurs due to their combined effect.

    17. İLETİŞİM ARAŞTIRMALARININ BİLGİ BİLİMSEL TEMELLERİ: BİLİMSEL BİLGİNİN BİLİNEBİLİRLİĞİ ÜZERİNE

      OpenAIRE

      YAŞIN, Cem

      2012-01-01

      Sosyal bilimlerde araştırma yöntemlerini oluşturan kuramsal çerçeve, bilgi, bilginin elde edilme yöntemleri, ve bilimsel bilginin objektif elde edilip edilemeyeceğinden oluşan üç temel eksende tartışmalara neden olmaktadır. İlk tartışma ekseni, aydınlanma düşüncesi ile, gerçek bilgi ve doğal olarak bilinmekte olanın ayrımına dayanmaktadır. Aydınlanma düşüncesinin bilgi kuramı mutlak bilgiye dayanmaktadır. Bu tür bir bilgi ise bilgiye giden yolun seçimini önemli kılmaktadır; bilme edimi,duyu o...

    18. A survey of temporal data mining

      Indian Academy of Sciences (India)

      Srivatsan Laxman; P S Sastry

      2006-04-01

      Data mining is concerned with analysing large volumes of (often unstructured) data to automatically discover interesting regularities or relationships which in turn lead to better understanding of the underlying processes. The field of temporal data mining is concerned with such analysis in the case of ordered data streams with temporal interdependencies. Over the last decade many interesting techniques of temporal data mining were proposed and shown to be useful in many applications. Since temporal data mining brings together techniques from different fields such as statistics, machine learning and databases, the literature is scattered among many different sources. In this article, we present an overview of techniques of temporal data mining. We mainly concentrate on algorithms for pattern discovery in sequential data streams. We also describe some recent results regarding statistical analysis of pattern discovery methods.

    19. Fast Beam Intensity Measurements for the LHC

      CERN Document Server

      Belohrad, D

      Particle accelerators are constructed and operated for a wide variety of applications. In particle physics - the branch of physics that studies the elementary constituents of matter and forces between them - high energy accelerators are used to look deep into the structure of matter. Medical particle accelerators are used for example in medicine to treat tumours [31], in imaging techniques such as Positron Emission Tomography (PET) [24], or for the radio-isotopes production. They also serve in many other industrial branches, e.g. geology, radiocarbon dating [39], molecular complex spectroscopy, lithography, food preservation etc. The eld of accelerator technology draws knowledge and expertise from a wide range of scientic disciplines and uses the latest technical knowledge. The incomplete list of covered disciplines includes mathematics, physics, electronics, computing, electromagnetic eld technology, microwave technology, cryogenics, vacuum technology, special materials, mechanical engineering or civil engin...

    20. Magnetic behavior of the oxide spinels: Li0.5Fe2.5-2AlCrO4

      Indian Academy of Sciences (India)

      U N Trivedi; K B Modi; H H Joshi

      2002-05-01

      In order to study the effect of substitution of Fe3+ by Al3+ and Cr3+ in Li0.5Fe2.5O4 on its structural and magnetic properties, the spinel system Li0.5AlCrFe2.5-2O4 ( = 0.0, 0.2, 0.4, 0.5, 0.6 and 0.8) has been characterized by X-ray diffraction, high field magnetization, low field ac susceptibility and 57Fe Mössbauer spectroscopy. Contrary to the earlier reports, about 50% of Al3+ is found to occupy the tetrahedral sites. The system exhibits canted spin structure and a central paramagnetic doublet was found superimposed on magnetic sextet in the Mössbauer spectra ( > 0.5).

    1. Hydrodynamic stability and stellar oscillations

      Indian Academy of Sciences (India)

      H M Antia

      2011-07-01

      Chandrasekhar’s monograph on Hydrodynamic and hydromagnetic stability, published in 1961, is a standard reference on linear stability theory. It gives a detailed account of stability of fluid flow in a variety of circumstances, including convection, stability of Couette flow, Rayleigh–Taylor instability, Kelvin–Helmholtz instability as well as the Jean’s instability for star formation. In most cases he has extended these studies to include effects of rotation and magnetic field. In a later paper he has given a variational formulation for equations of non-radial stellar oscillations. This forms the basis for helioseismic inversion techniques as well as extension to include the effect of rotation, magnetic field and other large-scale flows using a perturbation treatment.

    2. Exact travelling solutions for some nonlinear physical models by (′/)-expansion method

      Indian Academy of Sciences (India)

      B Salim Bahrami; H Abdollahzadeh; I M Berijani; D D Ganji; M Abdollahzadeh

      2011-08-01

      In this paper, we establish exact solutions for some special nonlinear partial differential equations. The (′/)-expansion method is used to construct travelling wave solutions of the twodimensional sine-Gordon equation, Dodd–Bullough–Mikhailov and Schrödinger–KdV equations, which appear in many fields such as, solid-state physics, nonlinear optics, fluid dynamics, fluid flow, quantum field theory, electromagnetic waves and so on. In this method we take the advantage of general solutions of second-order linear ordinary differential equation (LODE) to solve many nonlinear evolution equations effectively. The (′/)-expansion method is direct, concise and elementary and can be used with a wider applicability for handling many nonlinear wave equations.

    3. Effect of swift heavy ion irradiation on surface resistance of DyBa2Cu3O7- thin films at microwave frequencies

      Indian Academy of Sciences (India)

      Ujwala Ail; Tamalika Banerjee; A R Bhangale; D Kanjilal; R Pinto

      2002-05-01

      We report the observation of a pronounced peak in surface resistance at microwave frequencies of 4.88 GHz and 9.55 GHz and its disappearance after irradiation with swift ions in laser ablated DyBa2Cu3O7- (DBCO) thin films. The measurements were carried out in zero field as well as in the presence of magnetic fields (up to 0.8 T). The films were irradiated using 90 MeV oxygen ions at Nuclear Science Centre, New Delhi at a fluence of 3 × 1013 ions/cm2. Introduction of point defects and extended defects after irradiation suppresses the peak at 9.55 GHz whereas no suppression is observed at 4.88 GHz. These results and the vortex dynamics in the films at microwave frequencies before and after irradiation are discussed.

    4. Crataegus monogyna ile Fitokimyasal Tetkikler (Kısım I ve II)

      OpenAIRE

      ., Ayhan ULUBELEN ve Sabiha KARTIN

      2013-01-01

      Özet I:Crataegus monogyna'nm petrol eteri ve benzen-kloroform ekstre-lerinden bir alkaloidal karışım ve sekiz bileşik elde edildi. Bu mad­deler n-triakontan, nonakosanol-1, ^-sitosterol, ursolik asit, meçhul bir triterpenik keto alkol, krategolik asit, kaffeik asit ve oleonolik asittir. Elde edilen alkaloidal karışım incelenmemiştir. Bitkinin alkollü ekstre-si 9KB in vitro test sisteminde antitümör aktivite göstermişse de, aktivite bu fraksiyonlardan ziyade polar fraksiyonlarda olmalıdır.Özet...

    5. A general approach to bosonization

      Indian Academy of Sciences (India)

      Girish S Setulur; V Meera

      2007-10-01

      We summarize recent developments in the field of higher dimensional bosonization made by Setlur and collaborators and propose a general formula for the field operator in terms of currents and densities in one dimension using a new ingredient known as a `singular complex number'. Using this formalism, we compute the Green function of the homogeneous electron gas in one spatial dimension with short-range interaction leading to the Luttinger liquid and also with long-range interactions that lead to a Wigner crystal whose momentum distribution computed recently exhibits essential singularities. We generalize the formalism to finite temperature by combining with the author's hydrodynamic approach. The one-particle Green function of this system with essential singularities cannot be easily computed using the traditional approach to bosonization which involves the introduction of momentum cutoffs, hence the more general approach of the present formalism is proposed as a suitable alternative.

    6. Sürdürülebilir Rekabet Üstünlüğünün Sağlanmasında İnovasyonun Üretim Maliyetlerine Etkisi ve Ampirik Bir Uygulama

      OpenAIRE

      Akıncı, Adil

      2011-01-01

      Günümüzün hızlı değişen dünyasında, küresel rekabetin her geçen gün arttığı ekonomik ortamda işletmelerin ayakta kalabilmesi, rekabette söz sahibi olabilmeleri ve sürdürülebilir rekabet üstünlüğü elde edebilmeleri, işletmelerin rekabet avantajı yaratabilme yeteneklerine ve işletmenin inovatif faaliyetleri sonucu rakiplerine karşı üstünlük sağlayabileceği avantajlara bağlı olarak gelişmektedir. Rekabet ortamında üstünlük elde etmek isteyen işletmeler maliyet stratejisi, ...

    7. Revisiting the equivalence of light-front and covariant QED in the light-cone gauge

      CERN Document Server

      Mantovani, Luca; Xiong, Xiaonu; Bacchetta, Alessandro

      2016-01-01

      We discuss the equivalence between light-front time-ordered-perturbation theory and covariant quantum ?eld theory in light-front quantization, in the case of quantum electrodynamics at one-loop level. In particular, we review the one-loop calculation of the vertex correction, fermion self-energy and vacuum polarization. We apply the procedure of integration by residue over the light-front energy in the loop to show how the perturbative expansion in covariant terms can be reduced to a sum of propagating and instantaneous diagrams of light-front time-ordered perturbation theory. The detailed proof of equivalence between the two formulations of the theory resolves the controversial question on which form should be used for the gauge-?eld propagator in the light-cone gauge in the covariant approach.

    8. Final Technical Report for DOE DE-FG02-05ER54831 "Laboratory Studies of Dynamos."

      Energy Technology Data Exchange (ETDEWEB)

      Forest, Cary B. [UW-Madison

      2014-11-06

      Laboratory Studies of Dynamos: Executive Summary. The self-generation of magnetic fields by astrophysical bodies like planets, stars, accretion disks, galaxies, and even galaxy clusters arises due to a mechanism referred to as a homogeneous dynamo. It is quite simple to demonstrate the generation of a magnetic fi eld from a rotating copper disk coupled with a coil of wire, a device known as the homopolar dynamo. The device works like a magnetic fi eld ampli er with a feedback circuit: the differential rotation of a metal disk past an infinitesimally small seed magnetic field induces currents in the disk which, when coupled to a coil winding, can amplify the field until it becomes strong enough to slow the rotation of the disk. What is remarkable is that the same type of circuit may be achieved in a flowing conducting fluid such as a liquid metal in the case of planetary dynamos or a plasma in the case of astrophysical dynamos. The complexity of describing planetary and stellar dynamos despite their ubiquity and the plethora of observational data from the Earth and the Sun motivates the demonstration of a laboratory homogenous dynamo. To create a homogenous dynamo, one first needs a su fficiently large, fast flow of a highly conducting fluid that the velocity shear in the fluid can bend magnetic field lines. With a high Rm-flow, the magnetic fi eld can be ampli ed by the stretching action provided by di fferential rotation. The other critical ingredient is a flow geometry that provides feedback so that the ampli ed eld reinforces the initial in nitesimal seed field - a mechanism that recreates the feedback provided by the coil of wire in the homopolar dynamo. In the Madison Dynamo Experiment, this combination of magnetic ampli cation and feedback is feasible in the simple geometry of two counter-rotating helical vortices in a 1 meter-diameter spherical vessel lled with liquid sodium. For an optimal helical pitch of the flow the threshold for exciting a dynamo is

    9. Multiscale Equatorial Electrojet Turbulence: Energy Conservation, Coupling, and Cascades in a Baseline 2-D Fluid Model

      CERN Document Server

      Hassan, Ehab; Morrison, P J; Horton, W

      2016-01-01

      Progress in understanding the coupling between plasma instabilities in the equatorial electrojet based on a unified fluid model is reported. A deeper understanding of the linear and nonlinear evolution and the coupling of the gradient-drift and Farley-Buneman instabilities is achieved by studying the e?ect of di?erent combinations of the density-gradient scale-lengths (Ln) and cross-?eld (E?B) drifts on the plasma turbulence. Mechanisms and channels of energy transfer are illucidated for these multiscale instabilities. Energy for the uni?ed model is examined, including the injected, conservative redistribution (between ?elds and scales), and ultimate dissipation. Various physical mechanisms involved in the energetics are categorized as sources, sinks, nonlinear transfer, and coupling to show that the system satisfies the fundamental law of energy Oonservation. The physics of the nonlinear transfer terms is studied to identify their roles in producing energy cascades { the transference of energy from the domin...

    10. Local scour at abutments: A review

      Indian Academy of Sciences (India)

      Abdul Karim Barbhuiya; Subhasish Dey

      2004-10-01

      Failure of bridges due to local scour has motivated many investigators to explore the causes of scouring and to predict the maximum scour depth at abutments. In this paper, a detailed review of the up-to-date work on scour at abutments is presented including all possible aspects, such as flow field, scouring process, parameters affecting scour depth, time-variation of scour and scour depth estimation formulae.

    11. Shared memory abstraction: new approach under high concurrency conditions

      OpenAIRE

      Καραντάσης, Κωνσταντίνος

      2011-01-01

      In the current dissertation an implementation of shared memory abstraction on top of contemporary multi-core and many-core clusters has taken place. The results of the presented research effort are mainly depicted in the implementation of the cluster middleware platform Pleiad. Pleiad is a Java-based prototype that incorporates best practices from the field of distributed shared memory systems and also includes some prototype characteristics. Next we review briefly the main results and ...

    12. The Professionalization of Internal Auditing

      OpenAIRE

      Tomasz Gacoń

      2013-01-01

      Purpose: This paper attempts to examine the meaning of professionalization, the conditions required for professionalization and whether internal auditing can be recognized as a profession. The paper makes use of study results in the fi eld of internal auditing conducted in Europe and the USA, as well as Andrew Abbott’s theory on the system of professions. Professions have common characteristics which differentiate them from other occupations. These characteristics were used to determine the c...

    13. 在宅高齢者介護における介護者のアイデンティティ再構築について

      OpenAIRE

      福間, 里美; 針塚, 進

      2005-01-01

      The purpose of this study was to investigate identity-reconstruction of caregivers in family nursing for the elderly. Five kinds of questionnaires were given to 101 caregivers who had joined caregiver self-help groups. The results were summarized as follows: (1) There was a strong correlation found for the scores of identity-reconstruction of family caregivers and the scores ofrelationship-reconstruction between caregivers and their eld ers. (2) Inter-family relationships did not have any sig...

    14. Slug initiation and prediction using high accuracy methods - applications with field data

      OpenAIRE

      Kalogerakos, Stamatis

      2011-01-01

      The sponsoring company of the project is BP. The framework within which the research is placed is that of the Transient Multiphase Flow Programme (TMF-4), a consortium of companies that are interested in phenomena related to flow of liquids and gases, in particular with relevance to oil, water and air. The deliverables agreed for the project were: • validating EMAPS through simulations of known problems and experimental and field data concerning slug flow • introducing numer...

    15. A Sea Level Equation for seismic perturbations

      OpenAIRE

      Melini, D.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia; Spada, G.; Istituto di Fisica, Università di Urbino; Piersanti, A.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione Roma1, Roma, Italia

      2009-01-01

      Large earthquakes are a potentially important source of relative sea level variations, since they can drive global deformation and simultaneously perturb the gravity field of the Earth. For the first time, we formalize a gravitationally self–consistent, integral sea level equation suitable for earthquakes, in which we account both for direct effects by the seismic dislocation and for the feedback from water loading associated with sea level changes. Our approach builds upon ...

    16. THE BASIC PRINCIPLES OF RESEARCH IN NEUROEDUCATION STUDIES

      OpenAIRE

      Ali Nouri

      2016-01-01

      The present paper assembles contributions from the areas of education, psychology, cognitive science, and of course, neuroeducation itself to introduce the basic principles of research in the field of neuroeducation studies. It is particularly important, as such it is a useful way to justify researchers about what neuroeducation as a specific domain do that no other field can do as well or cannot do at all. Based on the literature reviewed, neuroeducational research can be understood as an inte...

    17. Approche intégrée "Spectroscopies électroniques et Calculs ab-initio d' états de c oeur excit és" des modes d'adsorption de l'ammoniac et de diamines sur la surface Si(001)-2 x1.

      OpenAIRE

      Mathieu, Claire

      2009-01-01

      The fabrication of hybrid organic/inorganic semiconductor structures is the subject of a worldwide research e ffort due to possible applications in the fi eld of organic electronics. In particular, the (001) oriented silicon, reconstructed 2 x1, can be used as a template to graft ordered organic arrays via the reaction of molecular functionalities ( π bonds, amines etc.) with the surface silicon dangling bonds in ultra high vacuum (UHV) conditions. However, the most interesting molecular obje...

    18. Precision Agriculture without borders: Practical issues and improvements in farmland coverage with aerial vehicles.

      OpenAIRE

      Pereira Valente, Joao Ricardo; Barrientos Cruz, Antonio; Cerro Giner, Jaime del; Sanz Muñoz, David; Garzón Oviedo, Mario; Rossi, Claudio

      2011-01-01

      This work presents a solution for the aerial coverage of a field by using a fleet of aerial vehicles. The use of Unmanned Aerial Vehicles allows to obtain high resolution mosaics to be used in Precision Agriculture techniques. This report is focus on providing a solution for the full simultaneous coverage problem taking into account restrictions as the required spatial resolution and overlap while maintaining similar light conditions and safety operation of the drones. Results obtained from rea...

    19. Experimental Methods in Psychology and Cognitive and Affective Neuroscience

      DEFF Research Database (Denmark)

      Habekost, Thomas; Nielsen, Julie Hassing

      2014-01-01

      Laboratory experiments have always been important in psychology and are as commonly used today as ever due to the dominating position of cognitive research in international psychology. This trend has been further strengthened by recent developments in cognitive neuroscience, where experimental...... studies are central. Recently, experimental studies within the field of affective neuroscience have also received attention. Notwithstanding, experimental methods remain controversial also in psychology, and one should carefully weigh their advantages against their drawbacks....

    20. Implementation av ett interface till Emotiv Epoc

      OpenAIRE

      Hansson, Nicklas

      2011-01-01

      The eld of Brain-computer interfaces (BCI) concerns linking together an external device with the brain of a human or an animal. By doing this the conventional use of a mouse or keyboard can be circumvented, which can greatly benefit people with different types of diseases that cause paralysis or other loss of motor control, such as Amyotrophic lateral sclerosis (ALS). A BCI can also be used for cognitive training of either healthy or mentally impaired subjects to increase cognitive capabiliti...

    1. Review of mycotoxin reduction in food and feed: from prevention in fields to detoxification by adsorption or transformation

      OpenAIRE

      Jard, Gwénaëlle; Liboz, Thierry; Mathieu, Florence; Guyonvarc’h, Alain; Lebrihi, Ahmed

      2011-01-01

      Abstract Mycotoxins are secondary metabolites present worldwide in agricultural commodities and produced by ?lamentous fungi that cause a toxic response (mycotoxicosis) when ingested by animals. Prevention of mycotoxicoses includes pre- and post-harvest strategies. The best way to reduce the mycotoxin content in food and feed is the prevention of mycotoxin formation in the ?eld but this is often not sufficient so that other methods are needed. To decontaminate and/or detoxify mycot...

    2. Environmental protection: private vegetable gardens on water protected areas in Ljubljana

      OpenAIRE

      Sara Strajnar

      2008-01-01

      The areas of allotment gardens and private vegetable gardens are two types of ‘small-scale agriculture’ on water protected areas in Ljubljana and surroundings. From the environmental protection point of view, these gardens are important for the intensity of production and large number of gardeners. In author’s graduation thesis the gardening habits have been investigated in detail. We combined data from fi eld work with numerous measurements of phytopharmaceutical products and nutrients in soi...

    3. Tomographic probability representation in the problem of transitions between the Landau levels

      OpenAIRE

      Zhebrak, E. D.

      2012-01-01

      The problem of moving of a charged particle in electromagnetic ?field is considered in terms of tomographic probability representation. The coherent and Fock states of a charge moving in varying homogeneous magnetic fi?eld are studied in the tomographic probability representation of quantum mechanics. The states are expressed in terms of quantum tomograms. The Fock state tomograms are given in the form of probability distributions described by multivariable Hermite polynomials with time-depen...

    4. Line search method for solving a non-preemptive strictly periodic scheduling problem

      OpenAIRE

      Pira, Clément; Artigues, Christian

      2013-01-01

      We study a non-preemptive strictly periodic scheduling problem. This problem arises for example in the avionic eld where a set of N periodic tasks (measure of a sensor, data presentation, etc.) has to be scheduled on P processors distributed on the plane. In this article, we consider an existing heuristic which is based on the notion of equilibrium. Following a game theory analogy, each task tries successively to optimize its own schedule and therefore to produce the best response, given the ...

    5. Physicochemical and Spectroscopic Characterization of Biofield Treated Butylated Hydroxytoluene

      OpenAIRE

      Trivedi, Mahendra Kumar

      2015-01-01

      The antioxidants play an important role in the preservation of foods and the management of oxidative stress related diseases by acting on reactive oxygen species and free radicals. However, their use in high temperature processed food and pharmaceuticals are limited due to its low thermal stability. The objective of the study was to use the bioeld energy treatment on butylated hydroxytoluene (BHT) i.e. antioxidant and analyse its impact on the physical, thermal, and spectral properties of BH...

    6. DEVELOPMENT TRENDS IN RUSSIA’S OIL & GAS SECTOR

      OpenAIRE

      Yuriy Bobylev

      2014-01-01

      In 2013, oil production in Russia reached its highest level since 1990 while exports of crude oil and refi ned products reached its highest-ever level in response to high prices of crude oil in global markets. However, a trend towards slower growth rates and worsening of oil and gas production conditions was observed. The recently adopted laws and regulations concerning tax incentives for the development of new oil and gas fi elds and hardtorecover reserves, liberalization of export of liquef...

    7. Statistical patterns in the location of natural lightning

      OpenAIRE

      İnan, Umran Savaş; Zoghzoghy, F.G; Cohen,M.B; Said, R.K

      2013-01-01

      Lightning discharges are nature’s way of neutralizing the electrical buildup in thunderclouds. Thus, if an individual discharge destroys a substantial fraction of the cloud charge, the probability of a subsequent ?ash is reduced until the cloud charge separation rebuilds. The temporal pattern of lightning activity in a localized region may thus inherently be a proxy measure of the corresponding timescales for charge separation and electric ?eld buildup processes. We present a s...

    8. Experimental Methods in Psychology and Cognitive and Affective Neuroscience

      OpenAIRE

      Habekost, Thomas; Nielsen, Julie Hassing

      2014-01-01

      Laboratory experiments have always been important in psychology and are as commonly used today as ever due to the dominating position of cognitive research in international psychology. This trend has been further strengthened by recent developments in cognitive neuroscience, where experimental studies are central. Recently, experimental studies within the fi eld of affective neuroscience have also received attention. Notwithstanding, experimental methods remain controversial also in psychology...

    9. When is it Fuel Efficient for a Heavy Duty Vehicle to Catch Up With a Platoon?

      OpenAIRE

      Liang, Kuo-Yun; Mårtensson, Jonas; Johansson, Karl Henrik

      2013-01-01

      Vehicle platooning has in recent years become an important research eld for thevehicle industry. By establishing a platoon of heavy duty vehicles, the fuel consumption can bereduced for the follower vehicles due to the slipstream eect. However, as vehicles are scatteredon the road driving by themselves, coordination amongst the vehicles is required. In this paperwe study the problem of when it is benecial for a heavy duty vehicle to drive faster in orderto catch up and join a platoon. We deri...

    10. Density of states in an electrically biased quantum well

      Indian Academy of Sciences (India)

      A Khan; S Sinha; P Panchadhyayee

      2007-10-01

      Density of states in a quantum well has been studied in the presence of an electric field applied perpendicular to the growth direction. We have shown that an extra quantization is introduced to the motion of the electron due to the discrete energy levels known as Wannier–Stark ladder states and the nature of density of electronic states changes from quasi two-dimensional to quasi one-dimensional.

    11. Is educational attainment related to end-of-life decision-making? A large post-mortem survey in Belgium

      OpenAIRE

      Chambaere, Kenneth; Rietjens, Judith AC; Cohen, Joachim; Pardon, Koen; Deschepper, Reginald; Pasman, H. Roeline W.; Deliens, Luc

      2013-01-01

      Background: Educational attainment has been shown to influence access to and quality of health care. However, the influence of educational attainment on decision-making at the end of life with possible or certain life-shortening effect (ELDs ie intensified pain and symptom alleviation, non-treatment decisions, euthanasia/physician-assisted suicide, and life-ending acts without explicit request) is scarcely studied. This paper examines differences between educational groups pertaining to preva...

    12. Improving the Selectivity of the ISOLDE Resonance Ionization Laser Ion Source and In-Source Laser Spectroscopy of Polonium

      OpenAIRE

      Fink, D.

      2014-01-01

      Exotic atomic nuclei far away from stability are fascinating objects to be studied in many scientic elds such as atomic-, nuclear-, and astrophysics. Since these are often short-lived isotopes, it is necessary to couple their production with immediate extraction and delivery to an experiment. This is the purpose of the on-line isotope separator facility, ISOLDE, at CERN. An essential aspect of this laboratory is the Resonance Ionization Laser Ion Source (RILIS) because it provides a fast and ...

    13. The senile kidney

      Directory of Open Access Journals (Sweden)

      Denisova Т.Р.

      2015-03-01

      Full Text Available The given work summarizes external data and self-obtained results on development and diagnostic of kidney involution modifications. Article discusses definition of "senile kidney" as a clinical and pathomorphological term. Major statements on pathophysiological causes of age-associated renal disorders and their prognosis, specifics of chronic kidney disease in elderly and senile patients have been reviewed. Phenomenon of renal "multimorbidity" in eldely maximizes worsening risk of unmodifiable kidney function.

    14. Environmental compensation using Resource Equivalency Analysis (REA) and Habitat Equivalency Analysis (HEA): is it just for the birds?

      OpenAIRE

      Cole, Scott

      2010-01-01

      Environmental compensation is the provision of natural resources through a restoration project, which is scaled to ensure the public is compensated for the environmental damage. The European Union (EU) recently implemented the Environmental Liability Directive (ELD), requiring that environmental damage be remediated (restored) so that the affected environment returns to (or toward) its baseline condition and the public is compensated for the initial damage and the losses during the time it ta...

    15. "¿Qué hacen aquí esos Pishtaku?": sueños, ofrendas y la construcción del pasado

      OpenAIRE

      Alexander Herrera; Kevin Lane

      2006-01-01

      This paper addresses the impactof local perceptions of the environment,archaeological sites and of archaeologiststhemselves, on the ways in which weconstruct the past. Based on the dissimilarfi eld experiences of two research teams weassess the power of dreams, offerings andrituals conducted to obtain permission fromthe mountains, the water and the ancestors toconduct excavations and surveys in the northcentralhighlands of Peru. These, we argue,manifest the complex articulation of geopolitica...

    16. Endotoxin removal by end-line filters.

      OpenAIRE

      Vanhaecke, E; De Muynck, C; Remon, J P; Colardyn, F

      1989-01-01

      Four commonly used end-line filters, one with a charge-modified hydrophilic nylon filter (ELD96; Pall Biomedical Ltd., Portsmouth, United Kingdom), one with an unmodified nylon filter (FAE020; Pall Biomedical), and two with hydrophilic cellulose ester filters (Ivex-HP, Millipore Corp., Bedford, Mass.; Sterifix, Braun-Gelman, Brussels, Belgium), were evaluated for their endotoxin-removing capacity in saline and 5% glucose. Natural endotoxins derived from Escherichia coli 8739 and the lipopolys...

    17. Reframing social exclusion from science communication: Moving away from 'barriers' towards a more complex perspective

      OpenAIRE

      Dawson, E

      2014-01-01

      Science communication is an increasingly important field of activity,research and policy. It should not be assumed however, that science communication practices provide equitable and empowering opportunities for everyone. Social exclusion, inclusion and equity are key challenges for practitioners, researchers, policy makers and funders involved with science communication. In this com-mentary I reflect on the limitations of the ‘barriers approach to understandingsocial inclusion and exclusion fr...

    18. PIN-based cancelable biometrics

      OpenAIRE

      Lacharme, Patrick; Plateaux, Aude

      2011-01-01

      Biometric authentication systems are more and more deployed in replacement of traditional authentication systems. Security of such systems is required in real- world applications and constitutes a major challenge in biometric field. An ef- ficient approach of this issue is realized by cancelable biometrics. However, the security of such biometric systems is often overestimated or based on restrictive as- sumptions. This paper presents and investigates a PIN-based variant for cancelable biometri...

    19. Some Trends in the Philosophy of Physics

      Directory of Open Access Journals (Sweden)

      Henrik Zinkernagel

      2011-07-01

      Full Text Available A short review of some recent developments in the philosophy of physics is presented. I focus on themes which illustrate relations and points of common interest between philosophy of physics and three of its `neighboring' elds: Physics, metaphysics and general philosophy of science. The main examples discussed in these three `border areas' are (i decoherence and the interpretation of quantum mechanics; (ii time in physics and metaphysics; and (iiimethodological issues surrounding the multiverse idea in modern cosmology.

    20. Complexity in Statistical Relational Learning : A Study on Learning Bayesian Logic Programs

      OpenAIRE

      Hagerf, Alexander

      2015-01-01

      Most work that is done within machine learning today uses statistical methods which assume that the data is identically and independently distributed. However, the problem domains that we face in the real world are often much more complicated and present both complex relational/logical parts as well as parts with uncertainty. Statistical relational learning (SRL) is a sub-field of machine learning and A.I. that tries to solve these limitations by combining both relational and statistical learn...

    1. Application of PSO, Artificial Bee Colony and Bacterial Foraging Optimization algorithms to economic load dispatch: An analysis

      CERN Document Server

      Baijal, Anant; Jayabarathi, T

      2011-01-01

      This paper illustrates successful implementation of three evolutionary algorithms, namely- Particle Swarm Optimization(PSO), Artificial Bee Colony (ABC) and Bacterial Foraging Optimization (BFO) algorithms to economic load dispatch problem (ELD). Power output of each generating unit and optimum fuel cost obtained using all three algorithms have been compared. The results obtained show that ABC and BFO algorithms converge to optimal fuel cost with reduced computational time when compared to PSO for the two example problems considered.

    2. Application of PSO Artificial Bee Colony and Bacterial Foraging Optimization algorithms to economic load dispatch-An analysis

      Directory of Open Access Journals (Sweden)

      Anant Baijal

      2011-07-01

      Full Text Available This paper illustrates successful implementation of three evolutionary algorithms, namely- Particle Swarm Optimization (PSO, Artificial Bee Colony (ABC and Bacterial Foraging Optimization (BFO algorithms to economic load dispatch problem (ELD. Power output of each generating unit and optimum fuel cost obtained using all three algorithms have been compared. The results obtained show that ABC and BFO algorithms converge to optimal fuel cost with reduced computational time when compared to PSO for the two example problems considered.

    3. Application of PSO Artificial Bee Colony and Bacterial Foraging Optimization algorithms to economic load dispatch-An analysis

      OpenAIRE

      Anant Baijal; Vikram Singh Chauhan; T. Jayabarathi

      2011-01-01

      This paper illustrates successful implementation of three evolutionary algorithms, namely- Particle Swarm Optimization (PSO), Artificial Bee Colony (ABC) and Bacterial Foraging Optimization (BFO) algorithms to economic load dispatch problem (ELD). Power output of each generating unit and optimum fuel cost obtained using all three algorithms have been compared. The results obtained show that ABC and BFO algorithms converge to optimal fuel cost with reduced computational time when compared to P...

    4. Improving multidisciplinary communication at ward board rounds using video enhanced reflective practice

      OpenAIRE

      Hellier, Cyril; Tully, Vicki; Forrest, Sandra; Jaggard, Pamela; MacRae, Morag; Habicht, Dirk; Greene, Alexandra; Collins, Karen

      2015-01-01

      The priority to ensure patient safety and use resources effectively, demands attention and innovation. Video enhanced reflective practice (VERP) provides training based upon analysis of film clips of one's professional practice to develop practical insight into the processes of communication, so that effective changes can be made to ongoing behaviour and practice. In this case the focus was on multi-disciplinary communication within daily board rounds on an acute medicine and care of the elde...

    5. Semantics for Spatio-temporal "Smart Queries"

      OpenAIRE

      Harbelot, Benjamin; Arenas, Helbert; Cruz, Christophe

      2013-01-01

      International audience There is a demand to enhance the meaning of objects and their relationships in the geospatial domain.This need has led to a new fi eld of research called geosemantics, which takes advantage of state of art databases and inference mechanism of ontologies. Current geosemantic proposals involve mixed solutions using spatial databases to store geographic objects and a separate ontology to provide semantic capabilities to the system. However making a simple query involves...

    6. Perception of Wheezing in the Elderly Asthmatics

      OpenAIRE

      Joo, Jae Hak; Lim, Gun Il; Seo, Moon Jeong; Park, Sang Joon; Lee, Jun Hyek; Uh, Soo Taek; Kim, Yong Hoon; Park, Choon Sik

      2001-01-01

      Background In elderly asthmatics, underdiagnosis is one of the important features. The main reason for underdiagnosis is thought to be a low frequency in complaining of symptoms due to the reduction of intellectual recognition and physical activity. Among the various symptoms, wheezing is the principal due in diagnosing bronchial asthma, and decreased complaints for wheezing are also noted in elderly asthmatics. The objective of this study is to determine if less complaints of wheezing in eld...

    7. Drugs and lifestyle for the treatment and prevention of coronary artery disease: comparative analysis of the scientific basis

      OpenAIRE

      P.L. da Luz; Nishiyama, M.; A.C.P. Chagas

      2011-01-01

      In this article, we compare two strategies for atherosclerosis treatment: drugs and healthy lifestyle. Statins are the principal drugs used for the treatment of atherosclerosis. Several secondary prevention studies have demonstrated that statins can significantly reduce cardiovascular events including coronary death, the need for surgical revascularization, stroke, total mortality, as well as fatal and non-fatal myocardial infarction. These results were observed in both men and women, the eld...

    8. Pollination and protection against herbivory of Nepalese Coelogyninae (Orchidaceae)

      OpenAIRE

      Subedi, A.; Chaudhary, R. P.; Achterberg, van, C.; Heijerman, T.; LENS, F.; Dooren, van, H.J.C.; Gravendeel, B.

      2011-01-01

      • Premise of the Study: Although many species in the orchid genus Coelogyne are horticulturally popular, hardly anything is known about their pollination. Pollinators of three species were observed in the fi eld in Nepal. This information is urgently needed because many orchid species in Nepal are endangered. Whether the exudates produced by extrafl oral nectaries played a role in protection against herbivory was also investigated. • Methods: Pollinators of C. fl accida , C. nitida , and Otoc...

    9. Choke-Mode Damped Structure Design for the CLIC Main Linac

      CERN Document Server

      Zha, Hao; Tang, Chuanxiang; Huang, Wenhui; Shi, Jiaru; Grudiev, Alexej; Wuensch, Walter

      2012-01-01

      Choke-mode damped structures are being studied as an alternative design for the accelerating structures of main linacs of the compact linear collider (CLIC). Choke-mode structures have the potential for much lower pulsed temperature rise, and lower cost of manufacture and fabrication. A new kind of choke-mode structure was proposed and simulated by Gdfidl. This structures has comparable wakefield damping effect as the baseline design of CLIC main linacs.

    10. Transition and nostalgia: the Acandí people nourishing system, Colombia

      OpenAIRE

      Gloria Margarita Alcaraz; Fanny Cecilia Pérez T

      2007-01-01

      Objective: to know and understand the nourishing system of the Acandí people relative to their economic and social history, providing elements for intercultural health care. Methodology: ethnography focused in the nourishing system. A total of 33 semi–structured interviews were performed, three focal groups were organized and field study was carried on. Manual analysis was performed. Results: looking back into the past one can realize how planting, harvesting, hunting, fishing, community sharin...

    11. The Triple Helix of the Organizational Knowledge

      OpenAIRE

      Contantin BRĂTIANU

      2013-01-01

      The purpose of this paper is to present the inner triple helix dynamics of the organizationalknowledge. This is a new perspective of the classical view of tacit knowledge– explicit knowledge dyad of the organizational knowledge promoted by Nonaka and hisco-workers. The new perspective is based on the metaphor that organizational knowledge isa "eld rather than a stock, or stocks and flows. It is a complex metaphor using the thermodynamicsprinciples. The organizational knowledge is composed of ...

    12. Open problems in formation and decay of composite systems in heavy ion reactions

      Indian Academy of Sciences (India)

      G Viesti; V Rizzi; M Barbui; D Fabris; M Lunardon; G Nebbia; S Moretto; S Pesente; M Cinausero; E Fioretto; G Prete; D Shetty

      2001-08-01

      New highly exclusive experiments in the field of formation and decay of composite systems in heavy ion reactions are presented. Dynamical effects are reviewed in the light of recent works on the role of the / asymmetry between projectile and target. The possibility of extracting directly from the experimental data the emission barrier of alpha particles emitted from highly excited nuclei is discussed. Finally, the first experimental evidence of double giant resonance excitation in fusion-evaporation reaction is presented.

    13. Experimental status of physics

      Indian Academy of Sciences (India)

      H Yamamoto

      2000-07-01

      In a short period of time, we will have a large amount of results from -factories including ones on CP violation. In this talk, we briefly review the current experimental status of -physics. After a quick description of -facilities, we divide this vast field into two categories: (1) weak interaction and QCD, (2) unitarity triangle and CP violation. Only a few critical items are selected in each category for the sake of time and space.

    14. Rola rodziny w interwencji i profi laktyce zagrożeń w Internecie

      OpenAIRE

      Knol-Michałowska, Kamila

      2012-01-01

      Nowadays the Internet is an integral part of young people’s lives. However, instead of many possibilities and positive aspects arising from Internet use, adults identify a selection of online risks connected to children online activities. Describing the risks, families express apprehension about adolescents’ safety and indicate fi elds of concerns which need to be covered in parental intervention and prevention strategies. Often this might be a challenge for families due to their inadeq...

    15. Multiscale Weighted Ensemble Kalman Filter for Fluid Flow Estimation

      OpenAIRE

      Gorthi, Sai; Beyou, Sébastien; Corpetti, Thomas; Memin, Etienne

      2011-01-01

      International audience This paper proposes a novel multi-scale uid ow data as- similation approach, which integrates and complements the advantages of a Bayesian sequential assimilation technique, the Weighted Ensem- ble Kalman lter (WEnKF) [12], and an improved multiscale stochastic formulation of the Lucas-Kanade (LK) estimator. The proposed scheme enables to enforce a physically plausible dynamical consistency of the estimated motion elds along the image sequence. 1

    16. Light charged particle emission in heavy-ion reactions – What have we learnt?

      Indian Academy of Sciences (India)

      S Kailas

      2001-07-01

      Light charged particles emitted in heavy-ion induced reactions, their spectra and angular distributions measured over a range of energies, carry the signature of the underlying reaction mechanisms. Analysis of data of light charged particles, both inclusive and exclusive measured in coincidence with gamma rays, fission products, evaporation residues have yielded interesting results which bring out the influence of nuclear structure, nuclear mean field and dynamics on the emission of these particles.

    17. A unified view on Aharanov–Bohm like phases and some applications

      Indian Academy of Sciences (India)

      C S Unnikrishnan

      2001-02-01

      The analysis of the Aharanov–Bohm phase and other similar physical effects in this paper is motivated by the philosophy that all physical changes, including phase changes, should originate in one of the local physical interactions even if they are described elegantly and concisely as topological or geometric changes. The topological or geometric nature comes about either due to an additional physical principle or due to certain special spatial or temporal property of the fields from the source. Similar remarks apply to rotation or precession of polarization and spin vectors. As a primary example I describe the Aharanov–Bohm phase as arising from the Coulomb interaction of a charge in the electrostatic potential created by other charges. The topological nature comes about because the interaction energy has zero gradient throughout space, except in a compact region enclosed by the quantum paths. This analysis brings out the unifying aspects of the scalar and the vector A–B effects, and the Aharanov–Casher phase. Then I discuss two other related problems with descriptions in the geometrical and the interaction pictures; I discuss how quantum complementarity is realized without the Heisenberg back action on momentum in certain atom interferometry experiments. In the second example, I show that the Thomas precession of the spin results from the local torque in the accelero-magnetic field, a field predicted in analogy with the gravitomagnetic field. I end the discussion with some remarks on the classical nature of fringe shifts in Aharanov–Bohm like phenomena in electromagnetism and gravitation.

    18. Avances en el estudio de la fi siología y patología endotelial en modelos animales

      OpenAIRE

      Fernando Iván Flores Pérez; Mario Pérez Martínez

      2006-01-01

      A review was carried out focused on the animal models that have been used to generate advances in the knowledge of the endothelium physiopathology fi eld. Basic aspects are explained in relation to history, types of animal models, variety of traditional animal models and transgenic or knockout animals; as well as related aspects of animal welfare and bioethics concerning the use of laboratory animals in biomedical research.

    19. Dalla pizza alla cura dell'uomo: le abilità di RoDyMan

      OpenAIRE

      Nunzia Bonifati; Bruno Siciliano

      2014-01-01

      RoDyMan, acronym for Robotic Dynamic Manipulation, is a research project funded by the European Research Council to the CREATE Consortium and carried out at PRISMA Lab in the Department of Electrical Engineering and Information Technology of the University of Naples Federico II. The goal is the development of a service robot able to manipulate elastic and soft objects, which change continuously density and shape. These robots will be used not only in manufacturing but also as an aid to eld...

    20. Mentalism versus behaviourism in economics: a philosophy-of-science perspective

      OpenAIRE

      Dietrich, Franz; List, Christian

      2016-01-01

      Behaviourism is the view that preferences, beliefs, and other mental states in social-scienti�c theories are auxiliary constructs re-describing people's behav- ioural dispositions. Mentalism is the view that they capture real phenomena, no less existent than the unobservable entities and properties in the natural sciences, such as electrons and electromagnetic �elds. While behaviourism has long gone out of fashion in psychology and linguistics, it remains the dominant orthodoxy in economics, ...