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Sample records for b-type structure die

  1. Relationship between branching density and crystalline structure of A- and B-type maize mutant starches.

    Science.gov (United States)

    Gérard, C; Planchot, V; Colonna, P; Bertoft, E

    2000-06-02

    Amylopectin from two double maize mutant starches of A-crystalline (wxdu) and B-crystalline type (aewx) was subjected successively to hydrolysis involving alpha and beta amylases, which isolated clusters and all branching zones of clusters (BZC). Enzymatic analysis together with ionic and size-exclusion chromatography revealed the structural features of the clusters and BZC and their role in starch crystallization. A-type clusters were larger (dp(n) > 80) and contained more (but shorter) chains than B-type clusters. The BZC of A-type starch was also larger, but with a shorter distance between the branching points than in B-type BZC. A-type clusters had a densely packed structure and B-type a poorly branched structure. Models for the structure of A- and B-type clusters are presented, and a hypothesis for the influence of cluster geometry on crystallization is proposed.

  2. Spectroscopic Evidence for an Oxazolone Structure in Anionic b-Type Peptide Fragments

    Science.gov (United States)

    Grzetic, Josipa; Oomens, Jos

    2012-02-01

    Infrared spectra of anionic b-type fragments generated by collision induced dissociation (CID) from deprotonated peptides are reported. Spectra of the b2 fragments of deprotonated AlaAlaAla and AlaTyrAla have been recorded over the 800-1800 cm-1 spectral range by multiple-photon dissociation (MPD) spectroscopy using an FTICR mass spectrometer in combination with the free electron laser FELIX. Structural characterization of the b-type fragments is accomplished by comparison with density functional theory calculated spectra at the B3LYP/6-31++G(d,p) level for different isomeric structures. Although diketopiperazine structures represent the energetically lowest isomers, the IR spectra suggest an oxazolone structure for the b2 fragments of both peptides. Deprotonation is shown to occur on the oxazolone α-carbon, which leads to a conjugated structure in which the negative charge is practically delocalized over the entire oxazolone ring, providing enhanced gas-phase stability.

  3. Spectroscopic Evidence for an Oxazolone Structure in Anionic b-Type Peptide Fragments

    NARCIS (Netherlands)

    Grzetic, J.; Oomens, J.

    2012-01-01

    Infrared spectra of anionic b-type fragments generated by collision induced dissociation (CID) from deprotonated peptides are reported. Spectra of the b(2) fragments of deprotonated AlaAlaAla and AlaTyrAla have been recorded over the 800-1800 cm(-1) spectral range by multiple-photon dissociation (MP

  4. Spectroscopic evidence for an oxazolone structure in anionic b-type peptide fragments

    NARCIS (Netherlands)

    J. Grzetic; J. Oomens

    2012-01-01

    Infrared spectra of anionic b-type fragments generated by collision induced dissociation (CID) from deprotonated peptides are reported. Spectra of the b2 fragments of deprotonated AlaAlaAla and AlaTyrAla have been recorded over the 800-1800 cm-1 spectral range by multiple-photon dissociation (MPD) s

  5. Effects of structural imperfection on gelatinization characteristics of amylopectin starches with A- and B-type crystallinity.

    Science.gov (United States)

    Genkina, Natalia K; Wikman, Jeanette; Bertoft, Eric; Yuryev, Vladimir P

    2007-07-01

    The aim of the present work was to investigate the effect of physical structures on the properties of starch granules. Starches with a high amylopectin content possessing A- and B-type crystallinity were chosen for the study. The gelatinization temperature decreased in the following order: maize (A) > potato (B) > wheat (A) > barley (A), which did not reflect a correlation with the type of crystallinity. Low values of gelatinization temperature were accompanied with high free surface energy of the crystallites. It is proposed that these data are caused by different types of imperfections in starch crystals. Annealing resulted in an enhancement of the gelatinization temperature and a decrease of the free surface energy of the crystallites for all starches reflecting a partial improvement of crystalline perfection. A limited acid hydrolysis (lintnerization) of the starches decreased the gelatinization temperature because of a partial disruption of the crystalline lamellae and an increase of the amount of defects on the edges of the crystallites. Annealing of the lintnerized starches improved the structure of maize and potato starch, giving them similar structural and physicochemical parameters, which was opposite the behavior of the annealed sample from wheat. The possible nature of removable and nonremovable defects inside the crystalline region of the starch granules is discussed. It is concluded that, besides the allomorphic A- and B-types of crystal packing, physical defects in the crystals possess a major impact on starch gelatinization.

  6. "Dying is dying, that's all": Structural violence and cultural projects in Malawian AIDS proverbs.

    Science.gov (United States)

    Hayes, Nicole C

    2015-01-01

    This paper examines three Malawian proverbs about AIDS: "AIDS came for people", "Dying is dying, that's all" and "It's in the flour". Proverbs permit Malawians to discuss the otherwise taboo topic of AIDS because they offer a special register and perform a footing shift, a rhetorical manoeuvre that allows the speaker to attribute problematic speech to someone else. The proverbs under consideration convey a sense of powerless in the face of the AIDS epidemic, which is an indicator of the effects of structural violence on the everyday lives of most Malawians. Despite the aura of timeless tradition generally conveyed by proverbs, the author argues that individual Malawians are actually using AIDS proverbs to align themselves with the pursuit of gendered cultural projects, such as multiple concurrent partner sex and transactional sex, which are not traditional at all.

  7. Structure of shaped sapphire grown from multicapillary dies

    Science.gov (United States)

    Dobrovinskaya, E. R.; Litvinov, L. A.; Pischik, V. V.

    1990-07-01

    Peculiarities in grain structure development have been studied in sapphire crystals grown with multicapillary channels in the die to feed melt to the crystallization zone. A new mechanism of grain boundary formation based on gas-bubble collapse at the crystal-melt interface is proposed.

  8. Heat resistant reduced activation 12% Cr steel of 16Cr12W2VTaB type-advanced structural material for fusion and fast breeder power reactors

    Science.gov (United States)

    Ioltukhovskiy, A. G.; Leonteva-Smirnova, M. V.; Solonin, M. I.; Chernov, V. M.; Golovanov, V. N.; Shamardin, V. K.; Bulanova, T. M.; Povstyanko, A. V.; Fedoseev, A. E.

    2002-12-01

    Heat resistant 12% Cr steels of the 16Cr12W2VTaB type (12Cr-2W-V-Ta-B-0.16C) provide a reduced activation material that can be used as a structural material for fusion and fast breeder reactors. The composition under study meets scientific and engineering requirements and has an optimal base element composition to provide a δ-ferrite content of no more than 20%. It also has a minimum quantity of low melting impurity elements and non-metallic inclusions. Short-term tensile properties for the steel tested to 700 °C are provided after the standard heat treatment (normalization, temper). Rupture strength and creep properties for the steel depending on the initial heat treatment conditions are also given. The microstructural stability of the 16Cr12W2VTaB type steel at temperatures up to 650 °C is predicted to be good, and the properties of the steel after irradiation in BOR-60 are demonstrated.

  9. Heat resistant reduced activation 12% Cr steel of 16Cr12W2VTaB type-advanced structural material for fusion and fast breeder power reactors

    Energy Technology Data Exchange (ETDEWEB)

    Ioltukhovskiy, A.G. E-mail: iral@bochvar.ru; Leonteva-Smirnova, M.V.; Solonin, M.I.; Chernov, V.M.; Golovanov, V.N.; Shamardin, V.K.; Bulanova, T.M.; Povstyanko, A.V.; Fedoseev, A.E

    2002-12-01

    Heat resistant 12% Cr steels of the 16Cr12W2VTaB type (12Cr-2W-V-Ta-B-0.16C) provide a reduced activation material that can be used as a structural material for fusion and fast breeder reactors. The composition under study meets scientific and engineering requirements and has an optimal base element composition to provide a {delta}-ferrite content of no more than 20%. It also has a minimum quantity of low melting impurity elements and non-metallic inclusions. Short-term tensile properties for the steel tested to 700 deg. C are provided after the standard heat treatment (normalization, temper). Rupture strength and creep properties for the steel depending on the initial heat treatment conditions are also given. The microstructural stability of the 16Cr12W2VTaB type steel at temperatures up to 650 deg. C is predicted to be good, and the properties of the steel after irradiation in BOR-60 are demonstrated.

  10. Structure optimization of porthole die based on aluminum profile extrusion process numerical simulation

    Institute of Scientific and Technical Information of China (English)

    WU Xiang-hong; ZHAO Guo-qun; LUAN Yi-guo; LOU Shu-mei; MA Xin-wu

    2006-01-01

    Porthole die extrusion method is used to produce hollow aluminum profile. Due to the complexity of the porthole die structure and the material flow, it is very difficult to get ideal profile products with the firstly designed die structure. Finite volume numerical simulation was used to analyze the extrusion process of a hollow profile with porthole die and the problem of non-uniform material flow was found. Optimization was made to the originally designed die to solve the problem. Lower load, reasonable seaming location and even extruded forepart with uniform material flow in the optimized die extrusion were obtained. Guidelines to porthole die design were given and it is also concluded that finite volume method with Eulerian description avoids mesh regeneration and is suitable to numerical simulation of severe deformation processes, such as profile extrusion.

  11. Association of N-Terminal Pro-B-Type Natriuretic Peptide with Left Ventricular Structure and Function in Chronic Kidney Disease (From the Chronic Renal Insufficiency Cohort [CRIC])

    Science.gov (United States)

    Mishra, Rakesh K.; Li, Yongmei; Ricardo, Ana C.; Yang, Wei; Keane, Martin; Cuevas, Magdalena; Christenson, Robert; DeFilippi, Christopher; Chen, Jing; He, Jiang; Kallem, Radhakrishna R.; Raj, Dominic S.; Schelling, Jeffrey R.; Wright, Jackson; Go, Alan S.; Shlipak, Michael G.

    2017-01-01

    We evaluated the cross-sectional associations of N-terminal pro-B-type natriuretic peptide (NT-proBNP) with cardiac structural and functional abnormalities in a cohort of chronic kidney disease (CKD) patients without clinical heart failure (HF), the Chronic Renal Insufficiency Cohort (n=3,232). Associations of NT-proBNP with echocardiographically determined left ventricular (LV) mass and LV systolic and diastolic function were evaluated by multivariable logistic and linear regression models. Reclassification of participants’ predicted risk of LV hypertrophy (LVH), systolic and diastolic dysfunction was performed using a category-free net reclassification improvement (NRI) index that compared a clinical model with and without NT-proBNP. The median (interquartile range) NT-proBNP was 126.6 pg/ml (55.5–303.7). The highest quartile of NT-proBNP was associated with nearly three-fold odds of LVH (odds ratio (OR) 2.7, 95% confidence interval (CI) 1.8–4.0) and LV systolic dysfunction (2.7, 1.7–4.5) and two-fold odds of diastolic dysfunction (2.0, 1.3–2.9) in the fully adjusted models. When evaluated alone as a screening test, NT-proBNP functioned modestly for the detection of LVH (area under the curve, AUC 0.66) and LV systolic dysfunction (AUC 0.62), and poorly for the detection of diastolic dysfunction (AUC 0.51). However, when added to the clinical model, NT-proBNP significantly reclassified participants’ likelihood of having LVH (NRI 0.14, 95% CI 0.13–0.15; p<0.001) and LV systolic dysfunction (0.28, 0.27–0.30; p<0.001), but not diastolic dysfunction (0.10, 0.10–0.11; p=0.07). In conclusion, in this large CKD cohort without HF, NT-proBNP had strong associations with prevalent LVH and LV systolic dysfunction. PMID:23178053

  12. Precise Magnetic Structures of Hard Ferromagnets of ND2FE14B Type as Determined at Low Temperature from Single Crystal Neutron Diffraction

    Science.gov (United States)

    Wolfers, P.; Bacmann, M.; Fruchart, D.

    2000-09-01

    The main constituent of the hard magnet materials Nd-Fe-B is the prototype of a new ferromagnet series, the Nd2Fe14B type (Space Group P42/nmm). Such compounds are characterised by high magnetocrystalline anisotropy parameters, those of rare earth origin being several times higher than the contribution of the iron subblattices. In many cases, these two contributions exhibit markedly different thermal behaviours, resulting in spin rotation phenomena or (and) lowering of the crystalline and the magnetic symmetry from the tetragonal high temperature state. Low temperature very precise studies on selected compounds of the series R2Fe14B with R = Nd, Ho, Er and Y, were undertaken by using neutron four circle diffractometry on single crystals. When temperature is lowered, the two first compounds exhibit a continuous spin reorientation within the [110] plane from the c-axis at high temperature towards an intermediate direction. The Er compound presents a first order transition around 350K where the resulting magnetisation first order rotates from the c-axis a high temperature to the a basal plane direction at low temperature. The last one compound remains c-easy axis in the whole temperature range. From our neutron diffraction experiments, lowering of the crystal symmetry to monoclinic (orthorhombic) space groups was precisely measured for the two first (third) samples. Besides marked deviations to collinearity affect the different sublattice magnetisations. Yet, these well marked phenomena have not been accounted for in the hundert experimental and theoretical analysis dedicated to the series. However, our results are in good agreement with a detailed 57Fe Mössbauer spectroscopy analysis of the Ho ternary hydrides.

  13. Quasi-periodic layer structure of die-upset NdFeB magnets

    Institute of Scientific and Technical Information of China (English)

    LAI Bin; LI Yanfeng; WANG Huijie; LI Anhua; ZHU Minggang; LI Wei

    2013-01-01

    Isotropic magnets were prepared from melt-spun powders at different hot pressing temperatures from 550 to 700 ℃,then upset into fully dense anisotropic magnets at the same die-upsetting temperature of 850 ℃.Die-upset magnets had the characteristics of inhomogeneous microstructure,including well-aligned grains structure and nonaligned grains layers transverse to press direction,which was quasi-periodic layer structure with a total length of 5-15 μm.Nonaligned grains layers were mainly made of large grains and had higher Nd content.To clearly understand the formation of layer structure,the microstructure of isotropic precursors with different hot pressing temperatures and their subsequent die-upset magnets was investigated.A new interpretation for the formation of layer structure was proposed in this paper:the layer structure was correlated to the original ribbon interface which was divided into three types based on the contact forms.Because of the incomplete contact of neighboring ribbons,concentration of stress occurred in the contacted points and the Nd-rich phase was squeezed into interspaces at high temperature under stress.Due to the release of interfacial energy and the fluidity of enough Nd-rich liquid phases,the nonaligned layers with large grains formed both in hot compaction and subsequent hot deformation process.The layer structure affected the magnetic properties of die-upset magnets.With increase of the hot pressing temperature,the nonaligned grains layers became thicker,and the magnetic performance of die-upset magnets decreased.It was necessary to reduce the thickness of large grains layers for the preparation of high-performance die-upset magnets.

  14. Structural Insights into the Nucleotide-Binding Domains of the P1B-type ATPases HMA6 and HMA8 from Arabidopsis thaliana

    Science.gov (United States)

    Mayerhofer, Hubert; Sautron, Emeline; Rolland, Norbert; Catty, Patrice; Seigneurin-Berny, Daphné; Pebay-Peyroula, Eva; Ravaud, Stéphanie

    2016-01-01

    Copper is a crucial ion in cells, but needs to be closely controlled due to its toxic potential and ability to catalyse the formation of radicals. In chloroplasts, an important step for the proper functioning of the photosynthetic electron transfer chain is the delivery of copper to plastocyanin in the thylakoid lumen. The main route for copper transport to the thylakoid lumen is driven by two PIB-type ATPases, Heavy Metal ATPase 6 (HMA6) and HMA8, located in the inner membrane of the chloroplast envelope and in the thylakoid membrane, respectively. Here, the crystal structures of the nucleotide binding domain of HMA6 and HMA8 from Arabidopsis thaliana are reported at 1.5Å and 1.75Å resolution, respectively, providing the first structural information on plants Cu+-ATPases. The structures reveal a compact domain, with two short helices on both sides of a twisted beta-sheet. A double mutant, aiding in the crystallization, provides a new crystal contact, but also avoids an internal clash highlighting the benefits of construct modifications. Finally, the histidine in the HP motif of the isolated domains, unable to bind ATP, shows a side chain conformation distinct from nucleotide bound structures. PMID:27802305

  15. Synthesis and structural characterization of amorphous alloys of the Fe-Ni-B type; Sintesis y caracterizacion estructural de aleaciones amorfas del tipo Fe-Ni-B

    Energy Technology Data Exchange (ETDEWEB)

    Cabral P, A.; Jimenez B, J.; Garcia S, I. [ININ, 52045 Ocoyoacac, Estado de Mexico (Mexico)

    2004-07-01

    It was prepared the alloy FeNiB for chemical reduction, using four p H values (5, 6, 7 and 7.5). To p H=6 partially oxidized particles were obtained, between 16 and 20%. In the synthesis to other p H values, the obtained particles were highly oxidized (65-90%) according to the X-ray diffraction results, in all the preparations the particles were partially crystallized, with crystal size that varied between 4 and 10 nm. The structure of these particles can be consider that they are formed by a nucleus due to the alloy and an oxide armor recovering it. (Author)

  16. Die instelling van die doop

    Directory of Open Access Journals (Sweden)

    J. L. Venter

    1989-06-01

    Full Text Available Die eerste plek in die evangeliebeskrywings waar daar van die doop as ’n opdrag van Jesus Christus gepraat word en waar die betekenis die duidelikste uitkristalliseer, staan in Matteus 28 : 16 - 20. Heilshistories gesien, is dit die begin van kerklike inlywing van die wat gehoor het hoedat Jesus sy koninkryk proklameer, die evangelie aanvaar en tot bekering kom. Vir die doel van hierdie artikel word hierdie gedeelte ondersoek om te sien hoe die instelling geskied het, wat die plek en betekenis van die Christelike doop is.

  17. The EU electricity production structure requires a differentiated energy policy; Die Stromerzeugungsstruktur der EU erfordert eine differenzierte Energiepolitik

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    2016-04-15

    For the electricity production of the EU there are differentiated structures which are based on different natural conditions, political decisions and investments of past decades. It has long been struggled committed to the ''one and correct'' energy policy. But precisely because of the differences in the individual countries, a unified energy and climate policy for the EU is not the right way. Diversity is a strength, which quite the EU Commission considered. Increased understanding of the specifics in other countries should just apply the German politics and the public that all too often judges from their own perspective. [German] Bei der Stromerzeugung in der EU bestehen differenzierte Strukturen, die auf unterschiedlichen natuerlichen Gegebenheiten, politischen Entscheidungen und Investitionen vergangener Jahrzehnte beruhen. Seit langem wird engagiert um die ''eine und richtige'' Energiepolitik gerungen. Doch gerade wegen der Unterschiede in den einzelnen Laendern kann eine vereinheitlichte Energie- und Klimapolitik fuer die EU nicht der richtige Weg sein. Vielfalt ist eine Staerke, was die EU-Kommission durchaus beruecksichtigt. Mehr Verstaendnis fuer die Spezifika in anderen Laendern sollte daher gerade die deutsche Politik und Oeffentlichkeit aufbringen, die allzu oft aus eigener Perspektive heraus urteilt.

  18. B-type stars in eclipsing binaries

    Science.gov (United States)

    Ratajczak, Milena; Pigulski, Andrzej

    2016-07-01

    B-type stars in eclipsing binary systems are unique astrophysical tools to test several aspects of stellar evolution. Such objects can be used e.g. to determine the masses of Beta Cephei variable stars, as well as help to place tighter constraints on the value of the convective core overshooting parameter α. Both precise photometry and high-resolution spectroscopy with high SNR are required to achieve these goals, but since many of the targets are bright enough, the challenge is fair. Following this assumption, we shall explain how we plan to examine both the aforementioned aspects of stellar evolution using observations of B-type stars obtained with a wide range of spectrographs, as well as BRITE-Constellation satellites.

  19. Die topkwark

    Directory of Open Access Journals (Sweden)

    R. Tegen

    1998-07-01

    Full Text Available ’n Oorsig van die belangrikheid van die onlangs ontdekte topkwark by Fermilab in Chicago word gegee. Daar word aangetnon dat die topkwark belangrik is in fisika van die Oerknal, oftewel "Big Bang", en in die Standaard Model van Elementêredeeltjie-fisika. Toepaslike literatuur vir verdere studie kan van die lys van verwysings in hierdie kort, nietegniese artikel, nagegaan word.

  20. Effect of Injection Velocity on Structure Part Characteristic in AZ50 Die Casting Process with High Vacuum System

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    When diecasting large and thin Mg alloy parts, material defects occur, which include porosity, nonuniform mechanical properties, irregular surfaces, and incomplete filling. To resolve these problems, it is necessary to have uniform injection velocities and temperatures as well as control the melt. This study investigated the feasibility of producing large and thin components using a die caster by attaching a high vacuum system. In particular, the effects of injection velocity on surface quality and the mechanical properties of the products were investigated. Hence, an injection velocity scheme and a die structure capable of casting in a vacuum were proposed. As a result, it was found that the critical low injection velocity was 0.2 m/s to produce large thin Mg alloy structures having good mechanical properties.

  1. Structure of Water Mist Stream and its Impact on Cooling Efficiency of Casting Die

    Directory of Open Access Journals (Sweden)

    R. Władysiak

    2012-04-01

    Full Text Available The work is a continuation of research on the use water mist cooling in order to increase efficiency of die-casting aluminum alloys. The paper presents results of research and analysis process, spraying water and generated a stream of water mist, the effect of the type of nozzle, the nozzle size and shape of the emitting of the water mist on the wall surface of casting die on the microstructure and geometry of water mist stream and cooling efficiency. Tests were used to perform high-speed camera to record video in the visible and infrared camera. Results were used to develop a computerized image analysis and statistical analysis. The study showed that there are statistical relationships between water and air flow and geometry of the nozzle and nozzle emitting a stream of microstructure parameters of water mist and heat the incoming stream. These relationships are described mathematical models that allow you to control the generating of adequate stream of water mist and a further consequence, the cooling efficiency of casting die.

  2. Die posisie van die Helper in die sending

    Directory of Open Access Journals (Sweden)

    I. J. van der Walt

    1972-06-01

    Full Text Available Gedurende die aanvangsjare van die sending het die helper ’n onmisbare funksie vervul. Hulle het die onherbergsame binnelande geken, waardevolle kontakpunte vir die sendelinge geopen en hulle mense geestelik help voorlig en voorberei.

  3. Structural materialization of stainless steel molds and dies by the low temperature high density plasma nitriding

    Directory of Open Access Journals (Sweden)

    Aizawa Tatsuhiko

    2015-01-01

    Full Text Available Various kinds of stainless steels have been widely utilized as a mold substrate material for injection molding and as a die for mold-stamping and direct stamping processes. Since they suffered from high temperature transients and thermal cycles in practice, they must be surface-treated by dry and wet coatings, or, by plasma nitriding. Martensitic stainless steel mold was first wet plated by the nickel phosphate (NiP, which was unstable at the high temperature stamping condition; and, was easy to crystalize or to fracture by itself. This issue of nuisance significantly lowered the productivity in fabrication of optical elements at present. In the present paper, the stainless steel mold was surface-treated by the low-temperature plasma nitriding. The nitrided layer by this surface modification had higher nitrogen solute content than 4 mass%; the maximum solid-solubility of nitrogen is usually 0.1 mass% in the equilibrium phase diagram. Owing to this solid-solution with high nitrogen concentration, the nitrided layer had high hardness of 1400 Hv within its thickness of 40 μm without any formation of nitrides after 14.4 ks plasma nitriding at 693 K. This nitrogen solid-solution treated stainless steel had thermal resistivity even at the mold-stamping conditions up to 900 K.

  4. 浅论模具结构对零件加工质量的影响%Discussion on the influence of die structure on machining quality

    Institute of Scientific and Technical Information of China (English)

    王鸿波

    2011-01-01

    By analyzing the two instances of actual production, the influences of stamping die structure on the machining quality of products were discussed simply. Aimed at the die structure and part machining features of the instances, the improvement of die structure was proposed. Proved in practice, the improved die ensures efficient processing quality, reduces die replacement repair frequency, increases die life, reduces production cost, and finally achieves the "small change, big change" effect.%通过对实际生产中2个实例的分析,浅论了冲压模具结构对产品零件加工质量的影响.针对实例中模具结构和零件加工特点,提出了模具结构改进方案.经过生产验证,改进后模具可靠有效地保证了零件加工质量,减少了模具更换修复频率,提高了模具使用寿命,降低了生产成本,达到了“小改动、大改变”的效果.

  5. Die regsposisie van die gemolesteerde kind 1

    Directory of Open Access Journals (Sweden)

    P.J. Schabort

    1991-03-01

    Full Text Available Hoe reik die reg uit na die seksueel gemolesteerde kind? As na die reg in wye verband gekyk word, sou dit alie wetgewing en alle gemeneregsbeginsels en alle regsprosedures insluit waardeur die Staat poog om molestering te voorkom en die gemolesteerde kind in beskerming te neem. Dit le baie wyd en sou byvoorbeeld die maatreels insluit van die Kindenvet 33 van 1960; die Wet op Egskeiding 70 van 1979; die Wet op Kindersorg 74 van 1983; die Wet op die Status van Kinders 82 van 1987 en die Wet op Bemiddeling in Sekere Egskeidingsaangeleenthede 24 van 1987. Eersdaags sal dit moontlik ook ’n Manifes vir die Regte van Kinders insluit wat vermoedelik geskoei sal wees op die W O se Konvensie vir die Regte van die Kind (1989 w a arv an die RSA tan s nog nie ’n ondertekenaar is nie.

  6. Ion-beam enhanced etching for the 3D structuration of lithium niobate; Ionenstrahlverstaerktes Aetzen fuer die 3D-Strukturierung von Lithiumniobat

    Energy Technology Data Exchange (ETDEWEB)

    Gischkat, Thomas

    2010-01-12

    The present thesis deals with the usage of the ion-beam enhanced etching (IBEE) for the 3D structuration of lithium niobate (LiNbO{sub 3}).Hereby the approach of the enhancement of the wet-chemical etching rate due to the irradiation with energetic ions is pursued. This method is very success promising for the realization of micro- and nanostructures with perpendicular structural walls as well as small roughnesses. The aim of this thesis consisted therein to form the foundations for the realization of three-dimensional micro- and nanostructures (for instance: Layer systems and photonic crystals) in LiNbO{sub 3} with high optical quality and to demonstrate on selected examples. Conditions for the success of the IBEE structuration technique is first of all the understanding of the defect formation under ion irradiation as well as the radiation-induced structure changes in the crystal and the change of the chemical resistance connected with this. For this the defect formation was studied in dependence on th ion mass, the ion energy, and the irradiation temperature. Thermally induced influences and effects on the radiation damage, as they can occur in intermediate steps in the complex processing, must be known and were studied by means of subsequent temperature treatment. The results from the defect studies were subsequently applied for the fabrication of micro- and nanostructures in LiNbO{sub 3}. Shown is the realization of lateral structure with nearly perpendicular structure walls as well as the realization of thin membranes and slits. The subsequent combination of lateral structuration with the fabrication of thin membranes and slits allowed the three-dimensional structuration of LiNbO{sub 3}. This is exemplarily shown for a microresonator and for a 2D photonic crystal with below lying air slit. [German] Die vorliegende Arbeit beschaeftigt sich mit der Ausnutzung des ionenstrahlverstaerkten Aetzens (IBEE: Ion Beam Enhanced Etching) fuer die 3D-Strukturierung von

  7. New approaches for the reliability-oriented structural optimization considering time-variant aspects; Neue Ansaetze fuer die zuverlaessigkeitsorientierte Strukturoptimierung unter Beachtung zeitvarianter Aspekte

    Energy Technology Data Exchange (ETDEWEB)

    Kuschel, N.

    2000-07-01

    The optimization of structures with respect to cost, weight or performance is a well-known application of the nonlinear optimization. However reliability-based structural optimization has been subject of only very few studies. The approaches suggested up to now have been unsatisfactory regarding general possibility of application or easy handling by user. The objective of this thesis is the development of general approaches to solve both optimization problems, the minimization of cost with respect to constraint reliabilty and the maximization of reliability under cost constraint. The extented approach of an one-level-method will be introduced in detail for the time-invariant problems. Here, the reliability of the sturcture will be analysed in the framework of the First-Order-Reliability-Method (FORM). The use of time-variant reliability analysis is necessary for a realistic modelling of many practical problems. Therefore several generalizations of the new approaches will be derived for the time-variant reliability-based structural optimization. Some important properties of the optimization problems are proved. In addition some interesting extensions of the one-level-method, for example the cost optimization of structural series systems and the cost optimization in the frame of the Second-Order-Reliabiity-Method (SORM), are presented in the thesis. (orig.) [German] Die Optimierung von Tragwerken im Hinblick auf die Kosten, das Gewicht oder die Gestalt ist eine sehr bekannte Anwendung der nichtlinearen Optimierung. Die zuverlaessigkeitsorientierte Strukturoptimierung wurde dagegen weit seltener untersucht. Die bisher vorgeschlagenen Ansaetze koennen bezueglich ihrer allgemeinen Verwendbarkeit oder ihrer nutzerfreundlichen Handhabung nicht befriedigen. Das Ziel der vorliegenden Arbeit ist nun die Entwicklung allgemeiner Ansaetze zur Loesung der beiden Optimierungsprobleme, einer Kostenminimierung unter Zuverlaessigkeitsrestriktionen und einer

  8. Tweedetaalteorie vir die eerstetaalonderwyser

    Directory of Open Access Journals (Sweden)

    Ludolph Botha

    2013-02-01

    Full Text Available In hierdie artikel word die eerstetaalonderwyser se aandag op tweedetaalteorie gevestig. Krashen se tweedetaalteorie word uitgesonder en die implikasies van sy werk vir eerstetaalonderwysersword ondersoek. Die oordrewe beklemtoning van vormen struktuur in moedertaalklasse ( oor die taal praatl lees/ skryf word vanuit die gesigspunt van Krashen se taalverwerwingsteorie beskou en die gevolgtrekking word gemaak dat daar veel meer klem op gebruiksvaardigheid behoort te val (in die taal praat!lees!skryf. In this article the first language teacher is made aware of second language teaching theory. Particularly Krashen' s second language theory is referred to and implications of his work for mother tongue teachers are discussed. The over-emphasis on form and structure in first language classes (talking/reading/writing about the language is looked at in terms of Krashen' s theory and it is concluded that the emphasis in first language classes should be far more on the functional use of the language (talking/reading/writing in the language.

  9. B-type natriuretic peptide secretion following scuba diving

    DEFF Research Database (Denmark)

    Passino, Claudio; Franzino, Enrico; Giannoni, Alberto;

    2011-01-01

    To examine the neurohormonal effects of a scuba dive, focusing on the acute changes in the plasma concentrations of the different peptide fragments from the B-type natriuretic peptide (BNP) precursor....

  10. Die Heimkunft

    Directory of Open Access Journals (Sweden)

    Stephen Romer

    2009-05-01

    Full Text Available En hommage amical à René Gallet.Die HeimkunftRuhig glänzen indes die silberen Höhen darüber,Voll mit Rosen ist schon droben der leuchtende Schnee.- HölderlinAnd then one day the young master returnsfrom a dark placeand birdsong leads the wanderer inand the cat yawns and curls againin the headiness of this instantthe house is fragrantwith woodsmoke and honeysucklewhich is a kind of accomplishment.Returning from dogmahome to the humanehe lays asideknapsack, alpenstock and hat,goes straight to t...

  11. Die Schatzkiste

    DEFF Research Database (Denmark)

    Holst-Pedersen, Jette von

    En tekstantologi, tænkt som suppelerende materiale til folkeskolens tyskundervisning i 7.-9. kl.. Die Schatzkiste indeholder tekster i forskellige genrer. Til hver tekst er der formuleret kreative opgaver, der skal motivere til udvikling af elevernes kommunikative færdigheder.......En tekstantologi, tænkt som suppelerende materiale til folkeskolens tyskundervisning i 7.-9. kl.. Die Schatzkiste indeholder tekster i forskellige genrer. Til hver tekst er der formuleret kreative opgaver, der skal motivere til udvikling af elevernes kommunikative færdigheder....

  12. Structure Analysis of 168 MN Hot Die Forging Press%168MN热模锻压力机的结构分析

    Institute of Scientific and Technical Information of China (English)

    郭改丽; 余朝辉

    2016-01-01

    The design features of prestressed frame structure , wedge structure , closed height adjustment structure and top ejector structure in 168 MN hot die forging press have been introduced in the paper .%介绍了168 MN热模锻压力机预应力机架结构、楔式结构、封闭高度调整结构、上顶料结构的设计特点。

  13. Aspekte van die siekepastoraat

    Directory of Open Access Journals (Sweden)

    H. J. C. Pieterse

    1980-06-01

    Full Text Available Die siekepastoraat vra ons aandag in hierdie tyd omdat die versorging van siekes ’n kenmerk is van die koms van die koninkryk van God. God se barmhartigheid het in sy volheid tot gelding gekom in die optrede van Jesus Christus. Die volle seën van die heil van die Ryk van God hou ook die versorging van die siekes in. Deur die heilswerk van Christus sien die blindes weer, loop die kreupeles, word melaatses gereinig, hoor die dowes, word dooies opgewek (Luk. 7:22.

  14. Die prediking oor die historiese stof van die Ou Testament

    Directory of Open Access Journals (Sweden)

    F. N. Lion-Cachet

    1989-06-01

    Full Text Available Uit ’n steekproef wat gedoen is uit die preke wat in Die Kerkblad (1986- 1987 verskyn het, blyk dit dat 40% van hierdie preke historiese stof uit die Ou Testament as teks gebruik het.

  15. Die gesag van die Heilige Skrif

    Directory of Open Access Journals (Sweden)

    S.C.W. Duvenage

    1967-03-01

    Full Text Available Dit geld nie maar t.o.v. ’n ongeloofsbeskouing soos dié van Karl Jaspers nie wat beweer: „Die Bibel ist das Depositum eines Jahrtausends menschlicher Grenzerfahrung” of van die Rooms-Katolieke skrifbeskouing nie wat die kerklike leertradisie, soos dogmaties op die konsilie van Trente vasgelê is, beskou as die enigste gesaghebbende kriterium vir die kanonisering en interpretasie van die Skrif.

  16. Structure and properties of Fe-Cr-Mo-C bulk metallic glasses obtained by die casting method

    Directory of Open Access Journals (Sweden)

    W. Pilarczyk

    2010-09-01

    Full Text Available urpose: The goal of this work is to investigate structure and properties of Fe54Cr16Mo12C18 alloy rods with different diameters obtained by the pressure die casting method.Design/methodology/approach: Master alloy ingot with compositions of Fe54Cr16Mo12C18 was prepared by induction melting of pure Fe, Cr, Mo, C elements in argon atmosphere. The investigated material were cast in form of rods with different diameters. Glassy and crystalline structures were examined by X-ray diffraction. The microscopic observation of the fracture morphology was carried out by the SEM with different magnification. The thermal properties of the studied alloy were examined by DTA and DSC method.Findings: These materials exhibit high glass-forming ability, excellent mechanical properties and corrosion resistance.Research limitations/implications: It is difficult to obtain a metallic glass of Fe54Cr16Mo12C18 alloy. The investigations carried out on the different samples of Fe54Cr16Mo12C18 bulk metallic alloy allowed to state that the studied ribbon was amorphous whereas rods were amorphous – crystalline.Originality/value: The formation and investigation of the casted Fe-Cr-Mo-C bulk materials and the study of glass-forming ability of this alloy.

  17. Rifts never die: Structure of the Upper Rhine Graben, and bearing on young and recent tectonics

    Science.gov (United States)

    Behrmann, J. H.

    2003-04-01

    The Upper Rhine Graben (URG) is a 300 km long, NNE trending, low-strain, small-displacement continental rift of mid-Tertiary age. Its structure can be adequately retrodeformed in 3D if sinistrally transtensive strain and displacement paths along the major faults and associated contact deformation in the wall rocks are restored. The overall structure of the URG is characterised by low listric curvature of the principal faults and large (16-20 km) depth to a basal detachment zone. This deformation geometry and kinematics inhibits block rotation, minimises displacement on individual faults, and apparently leads to strain dissipation into intricate fault networks and/or "en masse" fracturing of large rock volumes, and propagation of dominantly brittle deformation deep into the continental crust. A net result of such deformation may be permanent reduction of tensional and shear strength on a crustal scale, making oblique rifts like the URG particularly prone to tectonic reactivation. Continued Quaternary and recent tectonic activity of the URG is documented by the following phenomena: (1) strong local differential subsidence and sedimentary basin filling, especially in the northern and southern parts of the rift. (2) Formation of morphological scarps at the locations of some major faults and offset of Quaternary stata at depth, especially in the southern (Freiburg-Basel) segment (3) Changes in relative elevation of reference points along precise levelling traverses. (4) Considerable microearthquake activity (> 50 events since 1995 in the Freiburg area), concentrated in the middle and upper crust on or in the vicinity of depth projections of faults. One possible conclusion to be drawn from the URG data and observations is that rifts can remain in a near-critical mechanical state very long after formation, even if plate-scale principal stresses have changed orientations and/or differential magnitudes. Rates of movement and seismicity are up to one order of magnitude lower

  18. Die ontwrigting van die Afrikanervolk en volkseenheid

    Directory of Open Access Journals (Sweden)

    H. du Plessis

    1946-03-01

    Full Text Available Die gevare wat ons Afrikanerdom voor die deur staan, is baie en ernstig. Daar is die gevaar van immigrasie van buitelanders, daar is die al driester geroep om gelykstelling tussen blank en gekleurd, daar is die dreigende oorheersing van ’n oppervlakkige Amerikaanse „jazz”-gees.

  19. Die Nasionale Vakterminologiediens (NVD

    Directory of Open Access Journals (Sweden)

    L. A. Genis

    1992-07-01

    Full Text Available Die Nasionale Vakterminologiediens (NVD ressorteer onder die Hoofdirektoraat Kultuur en Vakkundige Hulp- dienste van die Departement van Nasionale Opvoeding. Die hoofdoelwit van die NVD is die skepping van ’n fijnksionele vakwoordeskat in veral Afrikaans, parallel met die inter- nasionaal gebruikte terminologieë.

  20. Characterization of A- and B-type starch granules in Chinese wheat cultivars

    Institute of Scientific and Technical Information of China (English)

    ZHANG Yan; GUO Qi; FENG Nan; WANG Jin-rong; WANG Shu-jun; HE Zhong-hu

    2016-01-01

    Starch is the major component of wheat lfour and serves as a multifunctional ingredient in food industry. The objective of the present study was to investigate starch granule size distribution of Chinese wheat cultivars, and to compare structure and functionality of starches in four leading cultivars Zhongmai 175, CA12092, Lunxuan 987, and Zhongyou 206. A wide variation in volume percentages of A- and B-type starch granules among genotypes was observed. Volume percentages of A- and B-type granules had ranges of 68.4–88.9% and 9.7–27.9% in the ifrst cropping seasons, 74.1–90.1% and 7.2–25.3% in the second. Wheat cultivars with higher volume percentages of A- and B-type granules could serve as parents in breeding program for selecting high and low amylose wheat cultivars, respectively. In comparison with the B-type starch granules, the A-type granules starch showed difference in three aspects: (1) higher amount of ordered short-range structure and a lower relative crystalinity, (2) higher gelatinization onset (To) temperatures and enthalpies (ΔH), and lower gelatinization conclusion temperatures (Tc), (3) greater peak, though, and ifnal viscosity, and lower breakdown viscosity and pasting temperature. It provides important information for breeders to develop potentialy useful cultivars with particular functional properties of their starches suited to speciifc applications.

  1. Die kritiese taak van die literator

    Directory of Open Access Journals (Sweden)

    A. L. Combrink

    1981-05-01

    Full Text Available Die beoefening van die literêre kritiek was aanvanklik slegs ’n deeltydse aktiwiteit. Die vroegste literêre kritici was nie as sodanig kritici nie maar het as deel van hulle totale intellektuele aktiwiteit hulle ook uitgelaat oor die letterkunde. Die motivering wat hulle hiertoe gehad het sou in ons dag heeltemal verdag voorkom: ’n uitgesproke didaktiese of moraliserende houding was die reel.

  2. B-type natriuretic peptides and mortality after stroke

    DEFF Research Database (Denmark)

    García-Berrocoso, Teresa; Giralt, Dolors; Bustamante, Alejandro;

    2013-01-01

    To measure the association of B-type natriuretic peptide (BNP) and N-terminal fragment of BNP (NT-proBNP) with all-cause mortality after stroke, and to evaluate the additional predictive value of BNP/NT-proBNP over clinical information....

  3. Low prevalence of B-type natriuretic peptide levels

    NARCIS (Netherlands)

    Hogenhuis, J; Voors, AA; Jaarsma, T; Hillege, HL; Hoes, AW; van Veldhuisen, DJ

    2006-01-01

    Background In patients with acute heart failure (HF) presenting at the emergency department, a B-type natriuretic peptide (BNP) level <100 pg/mL was found in only 10% of the patients. However, in a more stable outpatient HF population from another study, a BNP level <100 pg/mL was found in as many a

  4. Spearman se G en die faktorstrukture van die senior aanlegtoetse en die algemene skolastiese aanlegtoets

    Directory of Open Access Journals (Sweden)

    G. P. De Bruin

    1997-06-01

    Full Text Available Spearman's G and the factor structures of the Senior Aptlitude Test and the General Scholastic Aptitude Test. Scores of 1507 university students on the six subtests of the General Scholastic Aptitude Test (GSAT and on nine subtests of the Senior Aptitude Tests (SAT were subjected to a joint confirmatory factor analysis. This procedure was followed to examine (a the extent to which scores in respect of the two batteries of tests, are explained by a general factor (Spearman's g, and (b the relationship between the two general factors. Scores on the GSAT subtests were adequately explained by just one factor. With regard to the SAT three group factors could be distinguished, namely Verbal Ability, Visual-Spatial Ability and Numerical Ability. The correlations between the group factors were so high that the influence of a general factor was evident. The general factors underlying the SAT and GSAT respectively, also correlated significantly. In view of findings suggesting the general intelligence is the best single predictor of criteria such as academic success and work performance, the GSAT is recommended for selection purposes. Opsomming Tellings van 1507 universiteitstudente op die ses subtoetse van die ASAT en nege subtoetse van die SAT, is gesamentlik aan 'n bevestigende faktorontleding onderwerp. Hierdie prosedure is gevolg om ondersoek in te stel na (a die mate waartoe 'n algemene faktor (Spearman se g die tellings op die twee batterye toetse onderskeidelik onderle, en (b wat die verwantskap tussen die twee algemene faktore sou wees. Ten opsigte van die ASAT is dit duidelik dat slegs een faktor tellings op al ses subtoetse verklaar. Ten opsigte van die SAT kon drie groepsfaktore onderskei word/ naamlik Verbale Vermoe, Visueel-Ruimtelike Vermoe en Numeriese Vermoe. Die korrelasies tussen die drie groepsfaktore was egter so hoog dat dit duidelik is dat daar 'n algemene faktor onderliggend is aan die nege subtoetse. Die algemene faktore wat die

  5. Luther die prediker

    Directory of Open Access Journals (Sweden)

    J. J. van der Walt

    1983-06-01

    Full Text Available ’n Prediker moet ’n getroue herder wees wat magtig is in die Heilige Skrif, want die Woord bring die kerk voort. Daarom moet die prediker in sy bediening aan mense ’n woord van sekerheid hê deur seker te wees hy het die Woord van God. Met hierdie gedagtegang het Luther se pastorale besorgdheid vaste bodem vir die prediking in die gesag van die Woord van God.

  6. Aimed modification of the aggregate structure of sewage sludge with a view to enhancing dewaterability; Gezielte Veraenderung der Aggregatstruktur in Klaerschlaemmen im Hinblick auf die Verbesserung der Entwaesserbarkeit

    Energy Technology Data Exchange (ETDEWEB)

    Potthoff, A.; Friedrich, H.; Haas, S. [Fraunhofer-Institut fuer Keramische Technologien und Sinterwerkstoffe (IKTS), Dresden (Germany); Friedrich, E. [IWE mbH Radebeul (Germany); Hielscher, H. [Hielscher GmbH (Germany)

    1999-07-01

    Optimization of the dewatering of sewage sludge suspensions has the objectives of attaining a high dry residue content and fair process water quality. It was established that, apart from the parameters identified by the ATV, the following are, in the last analysis, also pivotal for the dewatering result: particle size distribution Q{sub 3}(x), mass-specific load, and the aggregate structure in the suspension. These properties can be modified and/or optimized through the application of mechanical energy, in other words, through disintegration. In the studies, an increase in the dry residue content of the dewatered product by 4 % was obtained. (orig.) [German] Ziel der Optimierung der Entwaesserung von Klaerschlammsuspensionen ist das Erreichen eines hohen TR-Gehaltes bei guter Prozesswasserqualitaet. Es wurde festgestellt, dass neben den von der ATV festgelegten Parametern auch die Partikelgroessenverteilung Q{sub 3}(x), die massenspezifische Ladung und die Aggregatstruktur in der Suspension entscheidend letztlich fuer das Entwaesserungsergebnis sind. Diese Eigenschaften koennen durch den Eintrag mechanischer Energie - durch die Desintegration - veraendert/optimiert werden. In den Untersuchungen wurde eine Erhoehung des TR-Gehaltes im Austrag des Entwaesserungsaggregates um 4 Prozentpunkte erzielt. (orig.)

  7. Atrial secretion of B-type natriuretic peptide

    DEFF Research Database (Denmark)

    Goetze, Jens Peter; Friis-Hansen, Lennart; Rehfeld, Jens F;

    2006-01-01

    In the normal heart, the endocrine capacity resides in the atria. Atrial myocytes express and secrete natriuretic hormones that regulate fluid homeostasis and blood pressure. But in ventricular disease, atrial natriuretic peptide (ANP) and B-type natriuretic peptide (BNP) gene expression is also...... activated in ventricular myocytes. Plasma concentrations of natriuretic peptides and their biosynthetic precursors are accordingly increased in patients with marked ventricular dysfunction. In contrast, atrial peptide secretion in ventricular disease has received less attention, and our present...... are also active in heart failure. Plasma measurement of cardiac natriuretic peptides and their molecular precursors can perhaps help us to discriminate when, where and how....

  8. Die verbondeling in verband

    Directory of Open Access Journals (Sweden)

    J. A.L. Taljaard

    1964-03-01

    Full Text Available Daar is dikwels en deur groot outoriteite al geskryf oor die mens in die samelewing. Hier wil ons egter die saak probeer aanraak uit ’n nuwe hoek, veral om die Skrifbeligting van die siening te benader. Vanselfsprekend verg hierdie benaming ’n skrifmatige mensbeskouing, maar ook ’n skrifmatige verbandsbeskouing. Die mens staan egter nie slegs in verhouding tot sy medemens nie maar ook in verhou­ ding tot stof, plant en dier. Boweal staan die mens in verhouding tot God, en hierdie verhouding is deurslaggewend vir al die ander verhoudinge waarin die mens hom bevind. Tog staan die mens ook in verhouding tot homself; wie kan die diepere roersele van die menslike siel peil, wie weet van die wroeginge, vreugde, leed en genot van die mens beter as hyself? Ook hierdie aspek verdien ons aandag. Op volledigheid kan nie aanspraak gemaak word nie, dit is ook nie my bedoeling nie. Die bedoeling is maar om die omvang van die tema aan te dui, die gedagtes te prikkel en veral om aan te spoor tot nuwe denkoriëntering waarin ook terminologies gebreek behoort te word met die neo-skolastiek binne reformatoriese lyn.

  9. Die Gewalt der Frauen

    Directory of Open Access Journals (Sweden)

    Angelika Ebrecht

    2000-07-01

    Full Text Available Anhand historischer Beispiele aus der Zeit der letzten Jahrhundertwende in Europa stellt die Autorin den Zusammenhang von Transgression, Aggression und Inversion dar. Gegen die gängige Auffassung, Gewalt sei männlich, setzt sie Selbst- und Fremdentwürfe von Frauen, die als Duellantinnen, Soldatinnen und Mörderinnen die gesellschaftlich festgelegten Grenzen der Gewalt verletzten. Sie interpretiert dies als Versuch, die Geschlechtergrenzen zu überschreiten und sich eine Subjektposition anzueignen.

  10. Verrekening van die kragveld van die verbond in die inkleding van die kommunikatiewe driehoeksverhouding tussen teks, hoorder en prediker

    OpenAIRE

    2012-01-01

    In hierdie artikel word die kommunikatiewe driehoeksverhouding tussen die Bybelse teks, die hoorders en die prediker homileties verken. Die probleemstelling waarmee gewerk word handel oor potensiële versteurings wat kan plaasvind in hierdie driehoeksverhouding wanneer die hoorders en die prediker in hulle menslike beperktheid in verbinding gebring word met die ewige Woord van God soos dit in die Bybelse teks na vore kom. In die loop van die artikel word die volgende aspekte verken: ’n Ideale...

  11. Antiglobalisierung die Andere Globalisierung

    OpenAIRE

    Ljiljana Croce

    2006-01-01

    Das Ziel der Arbeit ist, ein je größeres Interesse an diesem Thema zu erwecken und auf die Gefahren hinzuweisen, denen wir alle verlaufen, wie die Armen, sowie auch die Reichen und die kleine Gruppe der zum mittleren Stand gehörenden, die immer mehr in die offene Armut versinken. Es wäre zu viel, in einer Welt solcher Globalisierung, die soziale Empfi ndlichkeit der Menschen zueinander zu erwarten. In Wirklichkeit geht sie immer mehr verloren. Der Mensch als Einzelperson, sowie auch die Völke...

  12. Materials on dies for pressure die casting

    Directory of Open Access Journals (Sweden)

    E. Ragan

    2012-01-01

    Full Text Available In the contribution the stress of die materials of thermal fatigue is defi ned and material life is derived theoretically and compared with the measured values. The important properties of the die materials as thermal conductivity, coeffi cient of thermal expansivity, modulus of elasticity and mechanical properties are described. Binding to it single die materials as carbon steels and chrome-tungsten steels are analyzed. As the perspective die material for pressure die casting of ferrous metals appears molybdenum with regard to advantageous properties.

  13. Die voorspellingswaarde van die takseersentrum: 'n Oorsig

    Directory of Open Access Journals (Sweden)

    H. J. Pietersen

    1990-06-01

    Full Text Available The assessment centre: a brief review of predictive value. Factors such as the rise of the professional manager, industrialization and worker expectations have, over the last few decades, increasingly placed managers in the limelight as a key occupational group. In this regard the assessment centre has become prominent as a method for the identification of managerial potential. However, a brief review of the relevant research literature indicates low predictive variances for the managerial assessment centre. This fact, together with the limited scope of the assessment centre, therefore necessitates, amongst other things, a wider research perspective which will include other work and non-work related factors as well. Opsomming Verskynsels soos die opkoms van die professionele bestuurder, industrialisering en stygende werkerverwagtinge het meegebring dat die kollig die afgelope paar dekades al hoe meer op bestuurders as sleutelberoepskategone geplaas is. In hierdie verband het veral die takseersentrum aandag gekry as 'n metode vir die identifisering van bestuurs- potensiaal 'n Kort oorsig van die betrokke navorsingsliteratuur toon egter lae voorspellingsvariansiesyfers vir die takseersentrum aan. Hierdie feit, tesame met die beperkte fokus van die takseersentrum, noodsaak, onder andere, 'n wyer navorsingsperspektief wat ook ander relevante werk- en nie-werkverwante faktore msluit.

  14. Die ontwikkeling van die bestuursmotiveringsvraelys (BMV

    Directory of Open Access Journals (Sweden)

    A. S. Engelbrecht

    1991-06-01

    Full Text Available The development of the Managerial Motivation Questionnaire (MMQ: Several criticisms of the psychometric suitability of existing measures of managerial motivation are reported in the literature. This study aimed at developing a new psychometrically sound instrument, the Managerial Motivation Questionnaire (MMQ. This was done on the basis of a comprehensive study of the literature on managerial motivation and the role-motivation theory. The preliminary MMQ was systematically shortened and refined until the final MMQ of 98 items was composed. This was based on social desirability and semantic appraisal, item analysis and factor analysis of the questionnaire. The results indicate that it was possible to develop a final MMQ that was relatively free of social desirability. It further demonstrated satsifactory internal consistencies on two samples (a = 0/90, N = 360; a = 0/91, N = 535, where all subscale items were found to be relatively pure measures of the isolated factors. Although some evidence was found providing support for the reliability of the MMQ, a need for further research on the construct validity of managerial motivation still exists. Opsomming In die literatuur word verskeie punte van kritiek teen die psigometriese geskiktheid van bestaande meetinstrumente van bestuursmotivering gerapporteer. Die doelstelling van hierdie studie was dus om aan die hand van die konseptuele omiyning van bestuursmotivering, en die rolmotiveringsteorie as algemene verwysingsraamwerk, 'n nuwe psigometries aanvaarbare meetinstrument, die Bestuursmotiveringsvraelys (BMV, te ontwikkel. Op grond van sosiale wenslikheids- en semantiese beoordeling, itemontleding en faktorontleding van die voorlopige BMV is die vraelys stelselmatig verkort en verfyn totdat die finale BMV van 98 items saamgestel is. Die resultate dui daarop dat hierdie studie wel daarin geslaag het om 'n finale BMV te ontwikkel wat relatief vry van sosiale wenslikheid is, bevredigende interne

  15. Molecular cloning, genomic organization, and expression of a B-type (cricket-type) allatostatin preprohormone from Drosophila melanogaster

    DEFF Research Database (Denmark)

    Williamson, M; Lenz, C; Winther, A M

    2001-01-01

    and nonamidated C terminus. We have previously reported the structure of an A-type allatostatin preprohormone from the fruitfly Drosophila melanogaster. Here we describe the molecular cloning of a B-type prepro-allatostatin from Drosophila (DAP-B). DAP-B is 211 amino acid residues long and contains one copy each...

  16. USING LOGIC COMPONENTS FOR CONCEPTUAL DIE DESIGN

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    Logic components are used to support the conceptual design. Taking the stamping die structure as the research object,several logic components are defined for the conceptual die construction design. A new method-logic assembly modeling is presented to satisfy the characteristic of the top-down die design process. Representing shapes and spatial relations in logic can provide a natural,intuitive method of developing complete computer systems for reasoning about die construction design at the conceptual stage. This method can reflect the designer's thought clearly and provide the designer with a test bed for generating alternatives and performing reasoning work at the conceptual die design stage.

  17. Calculation and Analysis of Valence Electron Structure of Mo2C and V4C3 in Hot Working Die Steel

    Institute of Scientific and Technical Information of China (English)

    LIU Yan; LIU Zhi-lin; ZHANG Cheng-wei

    2006-01-01

    Taking the hot working die steel (HWDS) 4Cr3Mo2NbVNi as an example, the phase electron structures (PES) and the biphase interface electron structures (BIES) of Mo2C and V4C3, which are two kinds of important carbides precipitated during tempering in steel were calculated, on the basis of the empirical electron theory of solids and molecules and the improved TFD theory. The influence of Mo2C and V4C3 on the mechanical properties of HWDS has been analyzed at electron structure level, and the fundamental reason that the characteristic of the PES and the BIES of carbides decides the behavior of them has been revealed.

  18. Die sestienpersoonlikheidsfaktorvraelys as hulpmiddel by die takseersentrum

    Directory of Open Access Journals (Sweden)

    J. C. D. Augustyn

    1988-05-01

    Full Text Available The 16PF Personality Test as an aid to the assessment centre Assessment centres still remains costly and thime consuming. This study investigates the reduction of time and costs by the use of the 16 PF Personality Test as a method for measuring management dimensions. Promising results were obtained with a relatively small sample for the prediction of initiative and perseverance. Significant multiple correlations were also found for three criteria of management success. Further research may establish the use of the 16 PF as an aid to management assessment and thereby reduce the costs and time involved in assessment centres. Opsomming Takseersentrums se grootste probleem is gelee in die koste en tyd wat dit behels. Hierdie studie ondersoek die moontlikheid om beide te verminder deur die aanwending van die 16 PF Persoonlikheidsvraelys vir die meting van bestuursdimensies. Belowende resultate is met 'n relatiewe klein steekproef bevind ten opsigte van die voorspelling van inisiatiefen deursettingsvermoe. Beduidende meervoudige korrelasies is ook ten opsigte van drie kriteria van bestuursukses bevind. Verdere navorsing kan die gebruik van die 16 PF as hulpmiddel by bestuursevaluering vestig en sodoende die tydsduur en koste van takseersentrums verminder.

  19. 圆拉方拉深凹模的结构改进%Die structure improvement for drawing cylinder into box

    Institute of Scientific and Technical Information of China (English)

    李潍

    2011-01-01

    The deformation characteristics in drawing process of cylinder workpieces into box workpieces were analyzed in detail based on the example from production of high square cup deep- drawing. It was found out that the main reasons of deep drawing defects were uneven transformation of process part in deep drawing process. The structure of drawing die was improved. The results from actual production show that it can effectively reduce the deformation of non-uniform degree by changing the mouth shape and structure of the drawing die, and then make stamping quality to meet technical requirements.%结合高正方形盒形件在拉深生产中的实际案例,详细分析了圆筒形工序件在圆拉方过程中的变形特点,找出了圆拉方过程中产生拉深质量缺陷的主要原因是拉深过程中工序件各处的变形不均匀,并据此改进了凹模结构.生产实践证明,通过改变圆拉方拉深凹模口部的形状结构,可以有效地降低变形不均匀的程度,使冲件的质量达到技术要求.

  20. Die rol van persoonlikheidstrekke in die weerstand teen stres

    Directory of Open Access Journals (Sweden)

    Sonja V. R. van Oudtshoorn

    1988-05-01

    Full Text Available The role of personality characteristics in resistance to stress: A study was conducted to establish whether certain personality characteristics contribute to resistance to stress. Rescue brigadesmen, performing dangerous rescue operations in the goldmining industry, served as basis for the study. The sample consisted of 63 current, 56 ex- and 50 non-brigadesmen. Results indicate that brigadesmen, on the basis of their personality structure, are better equipped to cope with stress. Scores on the 16PF show that they have a lower level of interpersonal anxiety (Factor Q4 and that they are more practical (Factor I, emotionally stable (Factor C, and conscientious (Factor G. These findings support existing knowledge of the 16PF. Opsomming Ten einde vas te stel ofdaar sekere persoonlikheidstrekke bestaan wat bydra tot weerstand teen stres, is 'n studie uitgevoer met reddingspanlede, wat lewensgevaarlike reddingsdiens in die goudmynbedryf verrig, as ondersoekgroep. Die streekproefhet uit 63 huidige, 56 oud-reddingspanlede en 50 amptenare, wat nog nooit aan die span behoort het nie, bestaan. Dit blyk dat reddingspanlede, op grond van hulle persoonlikheidstruktuur, beter toegerus is om stres te hanteer. Tellings op die 16PF toon dat hulle oor 'n laervlakvan interpersoonlike angs beskik, (Faktor Q4, dat hulle meer prakties (Faktor I, emosioneel stabiel (Faktor C en konsensieus is (Faktor G. Hierdie bevindinge sluit aan by die reeds bestaande kennis oor die 16PF.

  1. Die etiek van Luther

    Directory of Open Access Journals (Sweden)

    J. H. van Wyk

    1983-06-01

    Full Text Available Dink ons aan die etiek van Luther dan spring onmiddellik ’n paar boeiende uitsprake van hom na vore soos o.a. dat Christene vanuit die gemeenskap met Christus nuwe dekaloë moet maak wat helderder as die van Moses kan wees, of dat ons in bepaalde sin vir ons naaste ’n Christus moet word. Die bydrae van Luther 'tot die Christelike etiek is sonder twyfel van groot betekenis en die bestudering daarvan die moeite werd. Luther is geprys as rewolusionêr en verguis as konserwatis, hy is geëer as iemand wat weer die ware be­tekenis van godsdiens ontdek het toe die lewe vervloei het in etiek. Of dit egter korrek is om sy etiek as konserwatief te tipeer, soos White doen, moet betwyfel word.

  2. 21 CFR 862.1117 - B-type natriuretic peptide test system.

    Science.gov (United States)

    2010-04-01

    ... 21 Food and Drugs 8 2010-04-01 2010-04-01 false B-type natriuretic peptide test system. 862.1117... Systems § 862.1117 B-type natriuretic peptide test system. (a) Identification. The B-type natriuretic peptide (BNP) test system is an in vitro diagnostic device intended to measure BNP in whole blood...

  3. Kepler observations of the variability in B-type stars

    DEFF Research Database (Denmark)

    Balona, Luis A.; Pigulski, A.; De Cat, P.

    2011-01-01

    variations in other stars which we attribute to proximity effects in binary systems or possibly rotational modulation. We find no evidence for pulsating stars between the cool edge of the SPB and the hot edge of the δ Sct instability strips. None of the stars shows the broad features which can be attributed......The analysis of the light curves of 48 B-type stars observed by Kepler is presented. Among these are 15 pulsating stars, all of which show low frequencies, characteristic of slowly pulsating B (SPB) stars. Seven of these stars also show a few weak, isolated high frequencies and they could...... be considered as SPB/β Cephei (β Cep) hybrids. In all cases, the frequency spectra are quite different from what is seen from ground-based observations. We suggest that this is because most of the low frequencies are modes of high degree which are predicted to be unstable in models of mid-B stars. We find...

  4. Ambrosius en die virginitas

    Directory of Open Access Journals (Sweden)

    C. J. Malan

    1985-05-01

    Full Text Available Ambrosius het met reg die benaming “Leraar van Maagdelikheid” ontvang (Dooley, 1948:119. Die opmerking van Thamin: “C’est une vertu proprement chrétienne que la vertu de virginité, proclame tout d’abord saint Ambroise” (1895:344, gee dadelik aanleiding tot die vraag of Ambrosius dan geen waardering vir die huwelik gehad het nie. Hierdie vraag word nog meer dringend as sy beskrywing van die kruis van die getroude lewe nagegaan word.

  5. Navorsing op die gebied van die sosiale wetenskappe*

    Directory of Open Access Journals (Sweden)

    P. M. Robbertse

    1958-03-01

    Full Text Available In Hollands is die woord scientia vertaal met wetenskap, wat sowel die natuur- as die geesteswetenskappe insluit, waardeur die woordsy oorspronklike betekenis behou. Die neiging bestaan om die Engels science met wetenskap in Afrikaans te vertaal, waarmee dan eintlik die natuurwetenskap bedoel word.

  6. Packaged die heater

    Science.gov (United States)

    Spielberger, Richard; Ohme, Bruce Walker; Jensen, Ronald J.

    2011-06-21

    A heater for heating packaged die for burn-in and heat testing is described. The heater may be a ceramic-type heater with a metal filament. The heater may be incorporated into the integrated circuit package as an additional ceramic layer of the package, or may be an external heater placed in contact with the package to heat the die. Many different types of integrated circuit packages may be accommodated. The method provides increased energy efficiency for heating the die while reducing temperature stresses on testing equipment. The method allows the use of multiple heaters to heat die to different temperatures. Faulty die may be heated to weaken die attach material to facilitate removal of the die. The heater filament or a separate temperature thermistor located in the package may be used to accurately measure die temperature.

  7. Wake up and Die

    DEFF Research Database (Denmark)

    Schubart, Rikke

    2013-01-01

    Anmeldelse af den colombianske gyserfilm Volver a morir (eng. titel Wake Up and Die) af Miguel Urrutia......Anmeldelse af den colombianske gyserfilm Volver a morir (eng. titel Wake Up and Die) af Miguel Urrutia...

  8. Fundamental properties of nearby single early B-type stars

    Science.gov (United States)

    Nieva, María-Fernanda; Przybilla, Norbert

    2014-06-01

    Aims: Fundamental parameters of a sample of 26 apparently slowly-rotating single early B-type stars in OB associations and in the field within a distance of ≲400 pc from the Sun are presented and compared to high-precision data from detached eclipsing binaries (DEBs). Together with surface abundances for light elements the data are used to discuss the evolutionary status of the stars in context of the most recent Geneva grid of models for core hydrogen-burning stars in the mass-range ~6 to 18 M⊙ at metallicity Z = 0.014. Methods: The fundamental parameters are derived on the basis of accurate and precise atmospheric parameters determined earlier by us from non-LTE analyses of high-quality spectra of the sample stars, utilising the new Geneva stellar evolution models. Results: Evolutionary masses plus radii and luminosities are determined to better than typically 5%, 10%, and 20% uncertainty, respectively, facilitating the mass-radius and mass-luminosity relationships to be recovered for single core hydrogen-burning objects with a similar precision as derived from DEBs. Good agreement between evolutionary and spectroscopic masses is found. Absolute visual and bolometric magnitudes are derived to typically ~0.15-0.20 mag uncertainty. Metallicities are constrained to better than 15-20% uncertainty and tight constraints on evolutionary ages of the stars are provided. Overall, the spectroscopic distances and ages of individual sample stars agree with independently derived values for the host OB associations. Signatures of mixing with CN-cycled material are found in 1/3 of the sample stars. Typically, these are consistent with the amount predicted by the new Geneva models with rotation. The presence of magnetic fields appears to augment the mixing efficiency. In addition, a few objects are possibly the product of binary evolution. In particular, the unusual characteristics of τ Sco point to a blue straggler nature, due to a binary merger. Conclusions: The accuracy

  9. Effective modelling, analysis and fatigue assessment of welded structures; Effektive Modellbildung, Analyse und Bewertung fuer die rechnerische Lebensdaueranalyse geschweisster Strukturen

    Energy Technology Data Exchange (ETDEWEB)

    Rauch, R.; Schiele, S. [CADFEM GmbH, Stuttgart (Germany); Rother, K.

    2007-07-01

    Analysis of welded structures is a challenge for the analyst. Improvements of Soft- and Hardware enable an analysis containing full assemblies. Especially for welded structures these possibilities show significant benefits leading to more detailed descriptions of the flux of forces and reducing the effort for the engineer. This paper covers the method for modeling, structural analysis and assessment of welded structures using Finite Element Analysis. A hierarchical concept to localize highly stressed regions using a global model and a local approach according to a notch stress analysis will be presented. (orig.)

  10. Die gebruik van parallelplaatreologie vir die bepaling van die intrinsieke viskositeit van poli-etileentereftalaat

    Directory of Open Access Journals (Sweden)

    O. C. Vorster

    2005-09-01

    Full Text Available Die bepaling van die intrinsieke viskositeit van poli-etileentereftalaat word bemoeilik deur die feit dat daar tans slegs twee metodes in gebruik is. In die eerste metode word die bepaling deur middel van oplossingsviskometrie gedoen, maar die toksisiteit van die oplosmiddel, asook die tydperk wat dit neem om die bepaling te doen, is ’n probleem. Die tweede metode word beperk deur die kompleksiteit en beskikbaarheid van die apparatuur in Suid-Afrika. In hierdie studie word ’n alternatiewe metode, gebaseer op parallelplaatreologie, voorgestel wat albei hierdie probleme oorkom en die resultate sodoende verkry, word vergelyk met dié wat met bestaande metodes verkry is.

  11. Die invloed van die neo-marxistiese kultuuranalise op die Wêreldraad van Kerke en die Gereformeerde Kerke van Nederland

    Directory of Open Access Journals (Sweden)

    J. M. Vorster

    1979-06-01

    Full Text Available Toe die studente dwarsoor die VSA en Europa in die laat sestigerjare ’n plotselinge en radikale verset openbaar het teen die bestaande orde, het hulle die deur geopen vir ’n nuwe mededinger om die hart van die Westerse kultuur. Dit is die nou reeds bekende neo-Marxisme. Sedertdien het hierdie jongeling sy voetspore op vele vlakke van die Westerse kultuur gelaat.

  12. B-Type Natriuretic Peptide: From Posttranslational Processing to Clinical Measurement

    DEFF Research Database (Denmark)

    Goetze, Jens P

    2012-01-01

    BACKGROUND:Plasma cardiac natriuretic peptides and peptide fragments from their molecular precursors are markers of heart disease. Clinical studies have defined the current diagnostic utility of these markers, whereas biochemical elucidation of peptide structure and posttranslational processing has...... revealed new plasma peptide forms of potential clinical use.CONTENT:Natriuretic propeptide structures undergo variable degrees of endo- and exoproteolytic cleavages as well as amino acid modifications, which leave the plasma phase of the peptides highly heterogeneous and dependent on cardiac......-atrial natriuretic peptide and pro-B-type natriuretic peptide are useful plasma markers in heart failure. New data have defined cardiac myocytes as competent endocrine cells in posttranslational processing and cellular secretion....

  13. Effects of silicon contents on formation of abnormal structures of aluminum alloy die castings; Aruminiumu gokin daikasuto no ijo soshiki keisei ni oyobosu keisoryo no eikyo

    Energy Technology Data Exchange (ETDEWEB)

    Komazaki, T.; Maruyama, Y.; Nishi, N. [Ryobi Ltd., Hiroshima (Japan)

    1995-04-25

    In this study, Al-5-11mass%Si binary alloys and commercial alloys with equivalent amount of silicon contents (AC2A, ADC10, ADC12) were fabricated into die castings with changed shot-time-lag, and effects of alloy structures on formation of abnormal structures were investigated. The results show the following discoveries. With the increasing of silicon contents in Al-Si binary alloys from 5 mass% to 11 mass%, the abnormal structures caused by the cooling and solidification of the molten metal in the injection sleeve will change from mainly coarse {alpha} phase to mainly breaking chill crystals as the solidification state is changing form porridge state to solid surface forming state. The abnormal structure of the commercial alloy AC2A mainly consists of coarse {alpha} phases and that of ADC12 mainly consists of breaking chill crystals. The ADC10 alloy is an intermediate alloy between them. The amount of dispersion for values of tensile strength of ADC12 alloy is larger than that of AC2A and ADC10 alloys because ADC12 alloy contains many breaking chill crystals. 12 refs., 11 figs., 4 tabs.

  14. Verskuiwing in die moraal?

    Directory of Open Access Journals (Sweden)

    S.P. van der Walt

    1974-03-01

    Full Text Available Modewoorde het ons deesdae oorgenoeg in die Christelike sedeleer en hulle kan nogal verwarring stig. U moet my vergun om met u te spreek oor een so ’n modewoord nl „verskuiwing’’ in die moraal. Dis nogal ’n mooi woord, wat so dikwels gebruik word op baie terreine en tog meer wil aandui as maar net ’n veranderde sienswyse, ’n wysiging in opvattinge of nuwe riglyne wat al gangbaar geword het in die praktyk. Die begrip wil eintlik die ewolusionêre gang beklemtoon, want dit is dan eintlik net die ou norme wat effens anders bekyk word of nie meer so nou geneem of dik onderstreep word nie. Die verskuiwing beteken dan dat alles nog dieselfde bly, net die posisie of plek het verander. Verskuiwing beteken tog plekverandering of plekwisseling en dan sekerlik nie in die sin dat die plekke ver uitmekaar lê nie. Verskuiwing beteken net maar vlak langs die vorige te staan kom. As dit dan ’n beter plek is, is dit ewolusie, ontwikkeling, verbetering.

  15. Die lebensvision des semonides

    Directory of Open Access Journals (Sweden)

    Milivoj Sironić

    1980-12-01

    Full Text Available Der Autor analysiert die Weibersatire des Semonides und andere seiner kurzen Fragmente. Dabei kommt er zu der Schlussfolgerung, dass sich die Verse der Satire durch eine gute Technik auszeich­ nen, dass aber auch eine unnötige Weitschweifigkeit nicht zu Ubersehen ist. Trotzdem kann man jedoch dem Dichter nicht die künstlerische Überzeugungskraft absprechen, wie auch die Ten­ denz nach Detailschilderungen und die Feinheit geistreicher Charakterisierungen. Die Aussage beinhaltet manchmal eine be­ stimmte innere Ironie in der Einfachheit der Wörter.In kurzen Fragmenten wird die Fähigkeit des Semonides sichtbar, sich sehr präzise auszudrücken. Seine ironisch-epische Sprache ist sehr reich  und verdient vom linguistischen Standpunkt aus Auf­ merksamkeit wegen ihres reichhaltigen lexischen und termino­ logischen Materials, insbesondere was die Bereiche der Tier­ welt und des Essens anbelangt.Die Weltanschauung des Dichters ist in dem ersten Fragment recht deutlich erkennbar. Da sieht man, dass er düster und pessimistisch auf das Leben blickt. Das Fehlen jeglicher positiven Einstellung hat dann den Sar­ kasmus zur Folge, mit dem der Dichter die Darstellung der Weiber einkleidet, ihn aber auch auf die Menschen schlechthin ausweitet.

  16. Die karst-ekologie van die Bakwenagrot (Gauteng

    Directory of Open Access Journals (Sweden)

    François Durand

    2012-03-01

    Full Text Available Die Bakwenagrot huisves ’n verskeidenheid organismes wat ’n ingewikkelde en verweefde voedselweb vorm. ’n Kolonie Natalse langvingervlermuise gebruik hierdie grot regdeur die jaar as blyplek. Die vlermuisguano en dooie plantmateriaal wat van buite in die grot inval, vorm die basis van die ekologie in die grot wat ook as ’n tipiese detritus-gedrewe ekostelsel beskryf kan word. Afbrekers soos bakterieë en swamme wat vir die afbraak van die guano en plantreste verantwoordelik is, word deur ’n verskeidenheid organismes, insluitend nematode en myte, as voedselbron benut. Hierdie organismes wat die volgende trofiese vlak vorm, word deur predatoriese artropode as voedselbron benut. Die Bakwenagrot is een van die weinige dolomietiese grotte in Suid-Afrika wat dit vir ‘n mens moontlik maak om tot by die grondwatervlak te kom. Die grondwater huisves verskeie tipes organismes waaronder bakterieë, swamme en diere – hoofsaaklik nematode en krustaseë. Die Bakwenagrot is ook die hoofvindplek waar varswater-amfipode in Suider-Afrika gevind is. Hierdie besondere en sensitiewe ekostelsel is hoofsaaklik van guano van die vlermuiskolonie afhanklik. Die grasveld in die gebied rondom die grot, wat as voedingsarea vir die vlermuiskolonie dien, word tans deur voorstedelike ontwikkeling en die gevolglike habitatfragmentasie en -vernietiging bedreig. Indien die vlermuise die grot sou verlaat, sal dit ’n hele domino-effek van uitsterwing van die grotbewonende organismes tot gevolg hê.

  17. Die benutting van water in die landbou: strategie vir die toekoms

    Directory of Open Access Journals (Sweden)

    D. S. van der Merwe

    1985-03-01

    Full Text Available ’n Uiteensetting word gegee van die faktore wat die hoofrol in die toekomstige waterbenutting in die landbou gaan speel. Hierdie faktore is die hoeveelheid water beskikbaar vir landboudoeleindes; die toenemende mineraiisasie van besproeiingswater; en die invloed wat energiebehoeftes op besproeiing sal hê. Navorsing is nodig om die situasie na wense te hanteer, en die aanbevelings van besproeiingsnavorsingswerksessies in hierdie verband word kortliks aangedui en bespreek.

  18. [Dying with cancer: Hollywood lessons].

    Science.gov (United States)

    Niemeyer, Fernanda; Kruse, Maria Henriqueta Luce

    2013-12-01

    The study attempts to understand how dying from cancer is portrayed by five movies produced in Hollywood between 1993 and 2006. Based on the cultural studies and their post-structuralism version and supported by the notions of discourse and subjectivity, as proposed by philosopher Michel Foucault, we suggest one of the possible readings of the movie picture corpus. We assess how the movie picture discourse acts as a cultural pedagogy that produces ways of seeing dying with cancer: immortalizing the healthy body image, silencing death, taking care of the dead body and, finally, accepting death. Our proposal is intended to stimulate reflections that may contribute to care and education in nursing.

  19. Die voorgeskiedenis van kwantumberekening

    Directory of Open Access Journals (Sweden)

    P. H. Potgieter

    2004-09-01

    Full Text Available

    Die hoofidees wat tans gestalte vind in die teorie en tegnologie van kwantumberekening is in die laat 1970’s en vroeg 1980’s deur fisici in die Weste en ’n wiskundige in die voormalige Sowjetunie neergelˆ e. Dat di´ e teorie ook wortels in die Russiestalige vakliteratuur het, is nie algemeen bekend in die Weste nie. Daar word kortliks gekyk na die idee soos deur Benioff en (veral Feynman in die Weste versprei, asook die voorstel van di´ e rekengrondslag deur Manin in die Russiese literatuur. Die outeur hoop om hiermee so ’n onpartydig moontlike sintese van die vroe ¨ e gedagtegeskiedenis rondom kwantumberekening aan te bied. Die rol van omkeerbare en onomkeerbare berekeningsprosesse word vlugtig bekyk soos dit verband hou met die ontstaan van kwantumberekening, asook die sogenaamde Inligtingsparadoks in die fisika. Die inligtingsteorie en die fisika het heelwat met mekaar te kommunikeer, soos hierdie paradoks uitwys.

    Abstract

    The pre-history of quantum computation

    The main ideas behind developments in the theory and technology of quantum computation were formulated in the late 1970s and early 1980s by two physicists in the West and a mathematician in the former Soviet Union. It is not generally known in the West that the subject has roots in the Russian technical literature. The idea, as propagated by Benioff and (especially Feynman, is reviewed along with the proposition of a foundation for this kind of computation by Manin in the Russian literature. The author hopes to present as impartial a synthesis as possible of the early history of thought on this subject. The role of reversible and irreversible computational processes will be examined briefly as it relates to the origins of quantum computing and the so-called Information Paradox in physics. Information theory and physics, as this paradox shows, have much to communicate to each other.

  20. Openbaring, teologie en die regswetenskap

    Directory of Open Access Journals (Sweden)

    S. Postma

    1970-03-01

    Full Text Available In die jongste tyd is telkens en weer gewaarsku teen die gevare van oorspesialisasie en die hipertrofie van professionalisme. Die gemis aan ’n totaliteitsvisie wat hiermee gepaard gaan, word dan ook tereg teengegaan en wel deur aan die Wysbegeerte as die Wetenskap van die totaliteit van die kosmos in toenemende mate sy regmatige plek as wetenskapsintegreerder te gun. Hierdie grootmoedige gun van ’n plek in die son van geleerdheid kan egter ook uit bedenklike motiewe plaasvind. Die vakwetenskaplike kan nie of wil nie die plek en betekenis van sy spesifieke vak bepaal en bepeins nie en vind dit in elk geval moeilik om die verband tussen Gods Woord en sy besondere vak in duidelike perspektief te sien; vandaar dan ’n grootmoedige toelaat dat die wysbegeerte die „veritas” dien terwyl die eie ek tevrede is om die „utilitas” onderdanig te wees.

  1. Die tug oor ampsdraers tydens die doleansie van 1886

    Directory of Open Access Journals (Sweden)

    J. Visser

    1986-06-01

    Full Text Available In art 29 van die Nederlandse Geloofsbelydenis word bely: “Die merktekens om die ware Kerk te ken is die volgende: As die Kerk die suiwere prediking van die evangelie uitoefen, as dit die suiwer bediening van die sakramente gebruik soos Christus dit ingestel het, as die kerklike tug gebruik word om die sondes te straf.” Dit spreek vanself dat wanneer ampsdraers, aan wie Christus sy kudde toevertrou het (Hand 20 : 28, met leer en /of lewenswandel in sonde volhard en nie daarin met tug gestuit word nie, word die ware kerk nie gebou nie maar afgebreek. 0ns sal later in hierdie artikel aantoon hoedanig die suiwer tug oor ampsdraers, veral leertug, tydens die Doleansie tot skade van die kerk van Christus agterweë gebly het.

  2. N-terminal Pro-B-type natriuretic peptide: a measure of significant patent cuctus arteriosus

    LENUS (Irish Health Repository)

    OFarombi-Oghuvbu, IO

    2008-01-24

    Background: B type natriuretic peptide (BNP) is a marker for ventricular dysfunction secreted as a pre-prohormone, Pro-B-type natriuretic peptide (ProBNP), and cleaved into BNP and a biologically inactive fragment, N-terminal pro-B-type natriuretic peptide (NT-proBNP). Little is known about the clinical usefulness of NT-proBNP in preterm infants.\\r\

  3. Are gay communities dying or just in transition? Results from an international consultation examining possible structural change in gay communities.

    Science.gov (United States)

    Simon Rosser, B R; West, William; Weinmeyer, Richard

    2008-05-01

    This study sought to identify how urban gay communities are undergoing structural change, reasons for that change, and implications for HIV prevention planning. Key informants (N=29) at the AIDS Impact Conference from 17 cities in 14 countries completed surveys and participated in a facilitated structured dialog about if gay communities are changing, and if so, how they are changing. In all cities, the virtual gay community was identified as currently larger than the offline physical community. Most cities identified that while the gay population in their cities appeared stable or growing, the gay community appeared in decline. Measures included greater integration of heterosexuals into historically gay-identified neighborhoods and movement of gay persons into suburbs, decreased number of gay bars/clubs, less attendance at gay events, less volunteerism in gay or HIV/AIDS organizations, and the overall declining visibility of gay communities. Participants attributed structural change to multiple factors including gay neighborhood gentrification, achievement of civil rights, less discrimination, a vibrant virtual community, and changes in drug use. Consistent with social assimilation, gay infrastructure, visibility, and community identification appears to be decreasing across cities. HIV prevention planning, interventions, treatment services, and policies need to be re-conceptualized for MSM in the future. Four recommendations for future HIV prevention and research are detailed.

  4. Die singulation method

    Science.gov (United States)

    Swiler, Thomas P.; Garcia, Ernest J.; Francis, Kathryn M.

    2013-06-11

    A method is disclosed for singulating die from a semiconductor substrate (e.g. a semiconductor-on-insulator substrate or a bulk silicon substrate) containing an oxide layer (e.g. silicon dioxide or a silicate glass) and one or more semiconductor layers (e.g. monocrystalline or polycrystalline silicon) located above the oxide layer. The method etches trenches through the substrate and through each semiconductor layer about the die being singulated, with the trenches being offset from each other around at least a part of the die so that the oxide layer between the trenches holds the substrate and die together. The trenches can be anisotropically etched using a Deep Reactive Ion Etching (DRIE) process. After the trenches are etched, the oxide layer between the trenches can be etched away with an HF etchant to singulate the die. A release fixture can be located near one side of the substrate to receive the singulated die.

  5. Ontsporing van die regstaatsbegrip en sy konsekwensies vir die afrikanervolk

    Directory of Open Access Journals (Sweden)

    N. G.S. Van der Walt

    1966-03-01

    Full Text Available Die opvatting van die suiwere regstaat bring sy vraagstukke mee wanneer dit in verband gebring word met die leer van die soewereiniteit in eie kring. Laasgenoemde leer wortel in die geloof dat God die mens roep tot diens aan Hom, en dat die mens vry moet wees om ten opsigte van alle lewensaspekte God na die hoogste mate te kan dien. Hierdie verskeidenheid van aspekte is deur dr. A. Kuyper en sy volgelinge gesistemati- seer tot menslike verbande en lewenskringe, elk met ’n be- paalde sfeer waarin ander kringe nie mag inmeng nie. Elkeen is dan soewerein binne sy eie kring. Met verwysing na die staat is dan gespreek van die staatstaak as synde die hand- hawing van die reg, en omdat die staat in toenemende mate hom veral in die latere tyd ook besig gehou het met bedrywig- hede wat nouliks as van juridiese aard beskou kan word, is daar die onderskeid gemaak tussen die primêre en sekundêre taak van die staat. Die sistematiek van die wetsidee, deur prof. Dooyeweerd ontwikkel, waar die staat sy bestemmingsfunksie in die regsaspek vind, het vanselfsprekend geen plek vir so 'n dualistiese staatstaak nie, en die oplossing is deur sommige daarin gesoek om sulke staatsoptrede te vertolk as hebbende wel betrekking op die regsgemeenskap of die regsverkeer. Staatsondernemings soos paaie, spoorweë, spellingreëling, ens. word dan beskou as noodsaaklik vir die instandhouding van die regsgemeenskap en regsverkeer. Tereg wys A. M. Donner1 daarop dat so ’n vertolking eintlik neerkom op ’n oorspanning van die regsbegrip. Hy self sien dan die staatstaak in vrede- of orde-handhawing, wat in die eerste plaas wel regshandha- wing veronderstel. Onder orde word dan alles verstaan wat noodsaaklik is vir die gladde verkeer in die ontwikkelingsgang van die regsgemeenskap. Die wese van die staat het dan vol- gens hom te doen met reg, maar sy taak is meer as suiwere regshandhawing. Wat onrus verwek en die orde versteur, moet uit die openbare lewe verwyder word, en die

  6. Die brein soos beskou deur die Grieke en Romeine

    Directory of Open Access Journals (Sweden)

    Francois P. Retief

    2015-02-01

    Full Text Available In Ou Egipte is mummifikasie met uitgebreide reseksie of uitsnyding van organe geassosieer, maar geen kennis is geneem van die morfologie van die brein nie. Griekse skrywers van die sesde en vyfde eeue v.C. het die brein aanvanklik gesien as die setel van intelligensie, die orgaan van sensoriese waarneming en gedeeltelik die oorsprong van sperma. Pneuma het ’n belangrike rol in breinfunksie gespeel. Hippokrates was die eerste om die brein te beskryf as ’n dubbele orgaan, wat met harsingvlies (meninges bedek, funksioneel van pneuma afhanklik en vertolker van begrip is. Tydgenote soos Plato, Aristoteles en Diokles het tot die beskrywing bygedra, maar laasgenoemde twee het beweer dat die hart die middelpunt van intelligensie is en nie die brein nie. Gedurende die laaste helfte van die vierde eeu v.C. is disseksie van die menslike liggaam tydelik aan die mediese skool van Alexandrië toegelaat en het dit tot merkwaardige vooruitgang in die begrip van die menslike anatomie en fisiologie gelei. Herofilus en Erasistratus het uitstekende beskrywings van die struktuur en funksie van die brein gegee wat eers in die tweede eeu n.C. deur Galenus geëwenaar is.

  7. Analise van die Tswanaraaisel

    Directory of Open Access Journals (Sweden)

    S. A. Swanepoel

    1984-05-01

    Full Text Available ’n Strukturele, stilistiese en funksionele bcskrywing van die Twanaraaisel bring mee dat daar aan die volgende aspekte aandag gegee moet word: •\tWat is ’n raaisel en lioe word dit in Tswana genoem. •\tTot watter studiegebied en literere genre hoort die raaisel en watter subvorme kan vir Tswana onderskei word. •\tHoe sien die struktuur van Tswanaraaisels daar uit. •\tDeur wie, waar, wanneer en hoe word Tswanaraaisels voorgedra. •\tWatter stilistiese kenmcrke kan in Tswanaraaisels onderskei word. •\tWatter funksies vervul raaisels in ’n Tswanagcmeenskap.

  8. Improvement on structure of spreading extrusion die for aluminum fiat profile%平板铝型材宽展挤压模结构改进

    Institute of Scientific and Technical Information of China (English)

    谭海林; 孟少明

    2011-01-01

    In view of some defects like slag inclusion, structural streak, etc. In aluminum flat profile occurring after its oxidation, numerical simulation based on elastic-plastic finite element theory was carried out on the process of spreading and extrusion of the profile. The main cause was analyzed and the structure of the extrusion die was improved accordingly.%针对某企业生产的平板铝型材氧化后有夹渣、组织条痕等缺陷,采用弹塑性有限元理论,对铝型材宽展挤压过程进行了数值模拟.根据模拟结果分析了造成该缺陷的主要原因,并对生产平板铝型材的宽展挤压模的结构进行改进和优化.通过生产验证,挤压出质量合格的平板铝型材,提出的模具改进方案是行之有效的.

  9. Consequences of decentral net entry to the structure of the network; Konsequenzen der dezentralen Einspeisung auf die Netzstruktur

    Energy Technology Data Exchange (ETDEWEB)

    Lampret, P. [Emscher Lippe GmbH (ELE), Gelsenkirchen (Germany)

    2006-07-01

    While the decentral production of electrical power and entry into the grid is common praxis for years the production of bio-mass based natural gas and its entry to the network is just beginning. Difference in structures of the grid/network, standards/guidelines, markets as well as the not standardized product do not allow a common statement but scenarios can be developed by comparisons and experiences with similar processes and consequences can be described. Technical consequences to the hardware can be neglected more or less as long as the quality of the bio-mass based natural gas meets the quality of the natural gas as described in the bio gas study of BGW/DVGW, farmer's association etc. Main difficulties arise from the operation and the economical results to the heat market. (orig.)

  10. Electronic structure of epitaxial chalcopyrite surfaces and interfaces for photovoltaics; Elektronische Struktur epitaktischer Chalkopyrite und deren Heterokontakte fuer die Photovoltaik

    Energy Technology Data Exchange (ETDEWEB)

    Hofmann, Andreas

    2012-02-14

    This thesis constitutes a comprehensive study of the surface physics of epitaxial CuInSe{sub 2} films. It comprises analyses of the surface morphology and reconstruction, electronic band structure as well as hetero-junctions relevant to photovoltaic applications. Therefore, especially the aspect of stoichiometry variation from the CuInSe{sub 2} to the copper-deficient defect phases was considered. Preparation and analysis was completely performed under ultra-high vacuum conditions in order to ensure the investigation of well-defined samples free of contaminants. For some of the analysis techniques, single-crystalline samples are indispensable: They allow for the determination of surface periodicity by low-energy electron diffraction (LEED). In combination with concentration depth profiling by angle-resolved x-ray photoemission, to types of surface reconstructions could be distinguished for the near-stoichiometric CuInSe{sub 2}(112) surface. In the copper-rich case, it is stabilized by Cu{sub In} anti-site defects and on the indium-rich side by 2 V{sub Cu} defects, as predicted by surface total energy calculations by Jaffe and Zunger. Both configurations correspond to a c(4 x 2) reconstruction of the zinc blende type (111) surface. For the defect compound CuIn{sub 3}Se{sub 5}, a sphalerite order of the surface was found, which points at a weakening or absence of the chalcopyrite order in the bulk of the material. The unusual stability of the (112) surface could also be proven by comparison with the reconstruction and surface order of (001) and (220) surfaces. The results from surface analysis were used to measure the valence band structure of the epitaxial samples by synchrotron-based angle-resolved photoelectron spectroscopy. The CuInSe{sub 2}(001) surface gives access to the high symmetry directions {Gamma}-T and {Gamma}-N of momentum space. By contrasting the data obtained for the stoichiometric surface with the copper-poor defect compound, a reduction of the

  11. Die hebsugtige seekoei en Rooikappie: Die groteske in sprokies

    Directory of Open Access Journals (Sweden)

    Dineke van der Walt

    2012-11-01

    Full Text Available Hierdie artikel bied ’n vergelykende lees van twee volksverhale wat ook as kinderverhale getipeer kan word (een vanuit Venda-folklore en die ander ’n populêre Europese narratief met die oog daarop om spesifieke ooreenkomste uit te lig – soos die eet van mensvleis, goedgelowige mense wat deur ‘n maskerspel om die bos gelei word en ander ‘onetiese’ en ‘immorele’ aktiwiteite. In Die hebsugtige seekoei boots die monster byvoorbeeld die stem van die jong seun na om sy suster te flous en toegang tot hulle hut te verkry, terwyl die wolf in Rooikappie op sy beurt die ouma flous om die huis te kan betree sodat hy later ook vir Rooikappie kan mislei. In albei stories word die jong meisies (asook Rooikappie se ouma deur ’n seekoei óf ’n wolf opgeëet. Soos gewoonlik in sprokies, word die slagoffers gered of ontsnap en die verhale het ’n gelukkige einde. Alhoewel dit absurd mag voorkom dat kinderverhale elemente van die groteske bevat, argumenteer ek dat dit inderdaad ’n bruikbare doel dien. Hierdie verhale betrek kinders nie net op ’n emosionele vlak nie (as gevolg van die skokwaarde van die groteske; die groteske dien ook as objek van fassinasie. Sodoende word die waarskuwingsboodskap in die verhale beter oorgedra en onthou deur die kinders.

  12. Die Soldering in Aluminium Die Casting

    Energy Technology Data Exchange (ETDEWEB)

    Han, Q.; Kenik, E.A.; Viswanathan, S.

    2000-03-15

    Two types of tests, dipping tests and dip-coating tests were carried out on small steel cylinders using pure aluminum and 380 alloy to investigate the mechanism of die soldering during aluminum die casting. Optical and scanning electron microscopy were used to study the morphology and composition of the phases formed during soldering. A soldering mechanism is postulated based on experimental observations. A soldering critical temperature is postulated at which iron begins to react with aluminum to form an aluminum-rich liquid phase and solid intermetallic compounds. When the temperature at the die surface is higher than this critical temperature, the aluminum-rich phase is liquid and joins the die with the casting during the subsequent solidification. The paper discusses the mechanism of soldering for the case of pure aluminum and 380 alloy casting in a steel mold, the factors that promote soldering, and the strength of the bond formed when soldering occurs. conditions, an aluminum-rich soldering layer may also form over the intermetallic layer. Although a significant amount of research has been conducted on the nature of these intermetallics, little is known about the conditions under which soldering occurs.

  13. Die Mollusken der Njalindungschichten

    NARCIS (Netherlands)

    Martin, K.

    1909-01-01

    Die Versteinerungen, welche im folgenden behandelt sind, sammelten meine Frau und ich im Jahre 1910 in den Preanger-Regentschappen von Java, in der Gegend von Njalindung ¹). Sie stammen aus Sedimenten, für welche ich den Namen Njalindungschichten einführte, und für die Gastropoden wurde bereits eine

  14. Die entwicklung, die metamorphose, die entstehung: Die konzepte des organismus von Aristoteles bis Darwin

    Directory of Open Access Journals (Sweden)

    Kamerer Eva

    2009-01-01

    Full Text Available (nemački In diesem Aufsatz versuche ich, die Elemente verschiedener Konzepte des Organismus in der Philosophie und in der Wissenschaft zu analysieren. Die Deutungen des Organismus und der Einheit der Natur bei Aristoteles, Kant und Goethe werden als ein Beispiel der Bewegung von einem finalistischen zum antifinalistischen Bild der Natur verstanden.

  15. Die oorsake vir die ontstaan en besondere aard van die Zion Christian Church

    Directory of Open Access Journals (Sweden)

    M. A. Kruger

    1972-06-01

    Full Text Available Aanvanklik het die Z.C.C. geen opsienbarende groei getoon nie, maar veral sedert die veertigerjare het hulle getalle skerp toegeneem en versprei oor die hele land. In 1963 is Edward Lekganyane toegelaat tot die Stofberg Teologiese Skool van die N.G. Kerk. Sedert die stigting van die Z.C.C. het die groep al verder van die Woord af weg beweeg, maar met hierdie toetrede tot die skool het daar by Edward self ’n mate van verandering gekom.

  16. A Double-Side CMOS-CNT Biosensor Array With Padless Structure for Simple Bare-Die Measurements in a Medical Environment.

    Science.gov (United States)

    Ahn, Jinhong; Hong, Sang Hoon; Park, Youngjune

    2015-12-01

    This paper presents a double-side CMOS-carbon nanotube (CNT) sensor array for simple bare-die measurements in a medical environment based on a 0.35 μm standard CMOS process. This scheme allows robust measurements due to its inherent back-side rectifying diodes with a high latch-up resistance. In particular, instead of using pads, only two contact metal structures: a wide ring structure around the sensor area on the front side and a plate structure at the backside are used for both power and single I/O line. The back-side rectification is made possible by creating VDD and VSS through the back-side and front-side, respectively. The single I/O line is conditioned such that it doubles as either the power source or the ground, depending on whether the chip is face down or face up. A modified universal asynchronous receiver/transmitter (UART) serial communication scheme with pulse based I/O signal transmission is developed to reduce the power degradation during the signaling intervals. In addition, communication errors and I/O power dissipation for the receiver path are minimized by using level sensitive switch control and double sampling difference amplifier. In order to implement these special functions, a controller chip with a special I/O protocol is designed. Using this controller chip, issuing commands and receiving data can both be performed on a single line and the results are flexibly measured through either the backside or the front side of the chip contacts. As a result, a stable operation of under 150 mW maximum power at 2 MHz data rate can be achieved. The double-side chips with 32 × 32 and 64 × 64 sensor arrays occupy areas of 1.9 × 2.3 mm(2) and 3.7 × 3.9 mm(2), respectively.

  17. Die owerheidsinmenging met betrekking tot kerklike tughandelinge.

    Directory of Open Access Journals (Sweden)

    L. Roeleveld

    1982-06-01

    Full Text Available Volgens art 29 NGB is die merktekens van die ware kerk die suiwere prediking van die Evangelie, die suiwere bediening van die Sakramente en die gebruik van die kerklike tug. Art. 32 NGB spreek uit dat die Kerkorde nie mag afwyk van wat Christus ingestel het nie. Menslike vindinge en wette om die gewetens te bind en te dwing, moet daarom verwerp word. Die ekskommunikasie of die ban moet toegepas word volgens die Woord van God.

  18. Mathematical model of determination of die bearing length in design of aluminum profile extrusion die

    Institute of Scientific and Technical Information of China (English)

    闫洪; 王高潮; 夏巨谌; 李志刚

    2004-01-01

    Based on the finite element simulation of profile extrusion process, the effect of local extrusion ratio, die bearing area and the distance between extrusion cylindrical center and local die orfice center on mental flow velocity was investigated. The laws of deformed metalflow on profile extrusion process were obtained. The smaller the local extrusion ratio, the faster the metal flow velocity; the smaller the area of die bearing, the faster the metal flow velocity; the smaller the distance of position of local die orifice(the closer the distance of position of local die orifice from extrusion cylindrical axis), the faster the metal flow velocity. The effect of main parameters of die structure on metal flow velocity was integrated and the mathematical model of determination of die bearing length in design of aluminum profile extrusion die was proposed. The calculated results with proposed model were well compared with the experimental results. The proposed model can be applied to determine die bearing length in design of aluminum profile extrusion die.

  19. Oor die einders van die bladsy as konseptuele kuns

    Directory of Open Access Journals (Sweden)

    Rita M.C. Swanepoel

    2012-11-01

    Full Text Available Hierdie artikel bied ’n filosofies-besinnende oorsig oor konseptuele kuns. Ek argumenteer dat, soos wat die projek Oor die einders van die bladsy die grense van boekwees oorskry en konseptueel uitbrei, dit in geheel ’n konseptuele en taalgebaseerde kunsinstallasie is wat uit verskeie komponente, naamlik kunstenaarsboeke,bestaan. Hierdie saamgestelde konseptuele kunsinstallasie daag vanweë die interdissiplinêre aard daarvan, die grense van konseptuele kuns uit. Hierdie projek en uitstallings bevestig dat kunstenaarsboeke ’n ideale medium is om kunstenaars uit verskillende dissiplines by die spel met en ontdekking van die moontlikhede van die boek te betrek. Die projek kan in die geheel as konseptuele kuns getipeer word omdat die konsep boek herdink, herskep en oor gefilosofeer word.

  20. Die verband tussen die sielkundige kontrak en organisasieverbondenheid

    Directory of Open Access Journals (Sweden)

    K. J. Stanz

    1999-06-01

    Full Text Available The relationship between the psychological contract and organisational commitment. The aim of this study is to design a measuring instrument with acceptable metric characteristics for the strength of the psychological contract within the South African context, and to determine empirically the relation between the strength of the psychological contract and organisational commitment. The Dhammanungune Model served as foundation for the design of the Strength of the Psychological Contract Questionnaire which consists of two scales namely, a needs expectation scale and a needs fulfilment expectation scale. The items of each scale have been formulated in the manner that ensures that the respondent reacts consecutively to two instructions namely, (a the level of the expectation and (b the importance of the expectation. This questionnaire was administered together with the Organisational Commitment Questionnaire to two population groups within the military environment. The Pearson Product Moment Correlation was calculated between the strength of the psychological contract and organisational commitment and the significance of the correlations was evaluated. Opsomming Die doel van die studie is om 'n meetinstrument met aanvaarbare metriese eienskappe vir die sterkte van die sielkundige kontrak vir Suid-Afrikaanse omstandighede te ontwerp en om empirics die verband tussen die sterkte van die sielkundige kontrak en organisasieverbondenheid te bepaal. Die sterkte van die sielkundige kontrak vraelys is op grond van die Dhammanungune-model ontwerp en het uit twee skale naamlik, die behoefteverwagting- en vervullingsverwagtingskale bestaan. Items vir eike skaal is sodanig geformuleer dat die respondent agteropeenvolgens op twee instruksies naamlik (a die vlak van die verwagting en (b die belangrikheid van die verwagting moet reageer. Die vraelys is saam met die organisasieverbondenheidsvraelys op twee populasies uit 'n militere omgewing toegepas. Die Pearson

  1. Die postpolitische Stadt

    Directory of Open Access Journals (Sweden)

    Erik Swyngedouw

    2013-12-01

    Full Text Available Die Polis ist tot, es lebe die kreative Stadt! Während die Stadt, zumindest in Teilen des städtischen Raums, blüht und gedeiht, scheint die Polis im idealisierten griechischen Sinn dem Untergang geweiht; in diesem Verständnis ist sie der Ort der öffentlichen politischen Auseinandersetzung und demokratischen Unterhandlung und somit eine Stätte (oft radikaler Abweichung und Unstimmigkeit, an der die politische Subjektivierung buchstäblich ihren Platz hat. Diese Figur einer entpolitisierten (oder postpolitischen und postdemokratischen Stadt im Spätkapitalismus bildet das Leitmotiv des vorliegenden Beitrags. Ich lehne mich dabei an Jacques Rancière, Slavoj Žižek, Chantal Mouffe, Mustafa Dikeç, Alain Badiou und andere Kritiker jenes zynischen Radikalismus an, der dafür gesorgt hat, dass eine kritische Theorie und eine radikale politische Praxis ohnmächtig und unfruchtbar vor jenen entpolitisierenden Gesten stehen, die in der polizeilichen Ordnung des zeitgenössischen neoliberalen Spätkapitalismus als Stadtentwicklungspolitik [urban policy] und städtische Politik [urban politics] gelten. Ziel meiner Intervention ist es, das Politische wieder in den Mittelpunkt der zeitgenössischen Debatten über das Urbane zu stellen. [...

  2. Die liefde wat die son beweeg en die ander sterre: Digterlike transendering – tot die vermenigvuldigde lewe ontroer

    Directory of Open Access Journals (Sweden)

    A.S. (Rensia Robinson

    2014-09-01

    Full Text Available T.T. Cloete se oeuvre word onder andere gekenmerk deur fyn waarneming van ’n mistieke vervlegtheid in die skepping. Dit word op vele maniere ontgin en geïnterpreteer. Die poëtiese potensiaal van die vrou, in uiteenlopende gestaltes, is een van die sentrale temas waardeur die digter hieraan vorm gee. In die kunstige, bibliofiele uitgawe Uit die wit lig van my land gesny val die lig op die vrou se kreatiewe rol in die groter skepping wat haar onder andere identifiseer as haarveer vir digterlike insig en vormgewing. Vrou (alternatief Anna Perenna, universele moeder, is nie slegs draer van die lewenskiem wat tot gees transendeer nie, maar sy funksioneer as ligbron (’sonvrou’ wat selfs kosmiese insig verwesenlik. Dit raak meervoudige vorms en patrone waarin die mens ingeweef is in die universele hologram van lewe. Vir die digter is hierdie patroonvorming vergelykbaar met die maak van Persiese tapyte waarvan die patrone vasgelê is in die geheue van voorouers, en oorgedra word na opeenvolgende geslagte. In dié verkenning word digterlike transendering ontgin as ’n proses waarin die kleurvolheid van lewe en dood in en deur individuele sowel as universele vroulikheid geïnspireer word.

  3. Die liefde wat die son beweeg en die ander sterre: Digterlike transendering – tot die vermenigvuldigde lewe ontroer

    Directory of Open Access Journals (Sweden)

    A.S. (Rensia Robinson

    2014-02-01

    Full Text Available T.T. Cloete se oeuvre word onder andere gekenmerk deur fyn waarneming van ’n mistieke vervlegtheid in die skepping. Dit word op vele maniere ontgin en geïnterpreteer. Die poëtiese potensiaal van die vrou, in uiteenlopende gestaltes, is een van die sentrale temas waardeur die digter hieraan vorm gee. In die kunstige, bibliofiele uitgawe Uit die wit lig van my land gesny val die lig op die vrou se kreatiewe rol in die groter skepping wat haar onder andere identifiseer as haarveer vir digterlike insig en vormgewing. Vrou (alternatief Anna Perenna, universele moeder, is nie slegs draer van die lewenskiem wat tot gees transendeer nie, maar sy funksioneer as ligbron (’sonvrou’ wat selfs kosmiese insig verwesenlik. Dit raak meervoudige vorms en patrone waarin die mens ingeweef is in die universele hologram van lewe. Vir die digter is hierdie patroonvorming vergelykbaar met die maak van Persiese tapyte waarvan die patrone vasgelê is in die geheue van voorouers, en oorgedra word na opeenvolgende geslagte. In dié verkenning word digterlike transendering ontgin as ’n proses waarin die kleurvolheid van lewe en dood in en deur individuele sowel as universele vroulikheid geïnspireer word.

  4. Die histologie en ultrastruktuur van die hepatopankreas van die bloukurper Oreochromis mossambicus

    Directory of Open Access Journals (Sweden)

    M. M. Nel

    1990-07-01

    Full Text Available Die histologie en ultrastruktuur van die hepatopankreas van die bloukurper Oreochromis mossambicus word beskryf. ’n Dun bindweefselkapsel omring die lewer. Die hepatosietrangskikking vertoon as lobules, met die koorde van hepatosiete wat vanaf ’n sentrale vene uitradieer en met mekaar anastomaseer. Indiwiduele lewerlohules vertoon nie duidelike grense nie, maar enkele duidelike triades word wel in die lewer van O. mossambicus aangetref. Die hepatosiete bevat ’n enkele ronde kern met ’n duidelike nukleolus en die growwe endoplasmiese retikula kom in twee of meer rye om die kerne en teen die selgrense van die hepatosiete voor. Die ander sitoplasmiese organelle kom verspreid in die hepatosietsitoplasma voor. Die eksokriene pankreasselle is om die portale venes gesetel. Die kerne van hierdie selle is rond en is hasaal in die kubies- tot silindervormige selle gelee. ’n Goedontwikkelde growwe endoplasmiese retikulum — vesikulêr, tubulêr en sirkulêr in vorm — en sektretoriese granules wat apikaal in die sel gelee is, kom voor.

  5. N-terminal pro-B-type natriuretic peptide in patients with growth hormone disturbances

    DEFF Research Database (Denmark)

    Andreassen, Mikkel; Faber, Jens; Vestergaard, Henrik;

    2007-01-01

    Acromegaly is associated with hypertrophic cardiomyopathy, hypertension and subsequent congestive heart failure. Impairment of cardiac function has also been associated with growth hormone deficiency (GHD). B-type natriuretic peptides (BNPs) have emerged as strong diagnostic and prognostic risk...

  6. Accurate Die Design for Automotive Panel Stamping Considering the Compensation Related with Die Deflection and Blank Thinning

    Science.gov (United States)

    Chen, Jun; Xu, Dongkai; Xia, Guodong; Li, Xifeng; Chen, Jieshi; Zhang, Jian; Yan, Wei; Li, Yue

    2011-08-01

    In order to improve assembly accuracy, automotive body panels have to be fabricated with higher dimensional and surface quality requirements, therefore the die faces should be designed more accurately to consider more relevant factors. In the presented study, we proposed algorithms to realize the following functions: through forming process simulation, the thinning distribution on the deformed blank was extracted as first kind of compensation; through die structural CAE analysis which automatically mapped the boundary contact forces onto the die surfaces from process simulation results, the die deflection was calculated as second kind of compensation. These two quantitative contributions were added together to compensate the die face. The proposed methodologies were programmed and integrated with LS-Dyna and HyperWorks, and also integrated with Autoform and CATIA linear CAE functionalities separately. In addition, a software toolkit to calculate the contacting ratio was also developed to evaluate the effectiveness of die face compensation. The second toolkit developed was verified by an automotive structural part forming die design, through die compensation and geometric optimization, the predicted contact ratio between the die face and formed blank was improved a lot, and the first toolkit was testified by a fender drawing die design. It shows that the die face compensation can be realized and integrated seamlessly between CAD model, process simulation model and die structural CAE model with the help of data I/O tools developed by the authors.

  7. Mouse B-Type Lamins Are Required for Proper Organogenesis But Not by Embryonic Stem Cells

    OpenAIRE

    Kim, Youngjo; Sharov, Alexei A; McDole, Katie; Cheng, Melody; Hao, Haiping; Fan, Chen-Ming; Gaiano, Nicholas; Minoru S.H. Ko; Zheng, Yixian

    2011-01-01

    B-type lamins, the major components of the nuclear lamina, are believed to be essential for cell proliferation and survival. We found that mouse embryonic stem cells (ESCs) do not need any lamins for self-renewal and pluripotency. Although genome-wide lamin-B binding profiles correlate with reduced gene expression, such binding is not directly required for gene silencing in ESCs or trophectoderm cells. However, B-type lamins are required for proper organogenesis. Defects in spindle orientatio...

  8. The Preparation of B-type Starch Spherocrystals by Freezing Crystallization

    Institute of Scientific and Technical Information of China (English)

    Yan Qi LIU; Jiu Gao YU; Xiu Ping SUN

    2004-01-01

    The B-typed starch spherocrystals were prepared by the dissolution and freezing crystallization of acid-hydrolyzed starch obtained by the mild hydrolysis of maize starch. The spherocrystals were characterized with scanning electron microscope (SEM), X-ray diffraction, thermogravimetry (TG) and gel pervasion chromatogram (GPC). The results show that the preparation was a B-type spherocrystal with the average degree of polymerization of 14 glucose units, and the average diameter of crystal particles was about 7μm.

  9. Experimental investigations of hexagonal crimping die failure

    Directory of Open Access Journals (Sweden)

    Veera kumar M

    2016-06-01

    Full Text Available This paper deals with the hexagonal crimping die failure of high carbon high chromium steel material. The failure modes were initially revealed and identified by the visual examination. Then the chemical analysis and metallographic examination havebeen carried at different positions of the failure die surface using scanning electron microscope (SEM. The microstructure evaluation reveals that failure occurs due to undissolved austenitic structure resulting in improper transition duringheat treatment.

  10. Die faktorstruktuur van Bass se veelfaktor- leierskapsvraelys in die Suid-Afrikaanse konteks

    Directory of Open Access Journals (Sweden)

    C .P. Ackermann

    2000-06-01

    Full Text Available The factor structure of Bass's Multifactor Leadership Questionnaire in the South African context. The aim of the study was to determine whether the factor structure of Bass's Multifactor Leadership Questionnaire (MLQ, as a measure of transformational leadership, could be replicated within the South African context. The MLQ was chosen not only because it promised to be a valid and reliable measuring instrument of the construct in question, but also due to the fact that there was an urgent need for such an instrument in the management of human resources within organisations undergoing transformation. The MLQ was administered to 406 subjects within the military context and was subjected to factor analysis and item analysis. The factor analysis yielded three factors, namely transformational leadership, transactional leadership and avoidance of leadership ("laissez faire" leadership. The reliabilities of the scales were determined by means of Cronbach's coefficient alpha, and yielded coefficients of 0,944, 0,736 and 0,803 respectively. The factor structure as conceptualised by Bass (1985 was largely confirmed in the present study. Opsomming Die doel van die studie was om vas te stel of die faktorstruktuur van die Veelfaktorleierskapsvraelys (MLQ van Bass, as maatstafvan transformasionele leierskap, in die Suid-Afrikaanse konteks gerepliseer kon word. Die MLQ is gekies omdat dit belofte inhou as n geldige en betroubare meetinstrument van die onderhawige konstruk, en ook weens die feit dat daar 'n dringende behoefte bestaan aan so n instrument vir gebruik in die bestuur van menslike hulpbronne in organisasies tydens verandering. Die MLQ is op 406 proefpersone binne militêre konteks toegepas, en aan n faktorontleding en n itemontleding onderwerp. Die faktorontleding het drie faktore opgelewer, te wete transformasionele leierskap, transaksionele leierskap en vermyding van leierskap ("laissez faire"-leierskap. Die betroubaarheid van die skale is bepaal

  11. Diskussie oor die millenium en die herstel van Israel

    Directory of Open Access Journals (Sweden)

    J. J. Engelbrecht van Waverley

    1978-06-01

    Full Text Available Dit verheug my dat daar eindelik gereageer word op my boekie. Behalwe telefoonoproepe en briewe van medechiliaste was daar tot dusver geen kommentaar van anti-chiliastiese kant. Ek het die boekie aan ongeveer 1800 predikante en professore gestuur en vriendelik uitgenooi tot nuwe besinning. Net soos oor die soteriologie, is die Bybel nêrens in teëspraak met homself oor die eskatologie nie. God gee in sy Woord nie vir ons drie verskillende toekomsbeelde om uit te kies nie. God is een en sy profetiese Woord is deurgaans eenstemmig m.b.t. die raad van God oor Israel, die nasies en die kerk.

  12. Pulsating B-type stars in the open cluster NGC 884: frequencies, mode identification and asteroseismology

    CERN Document Server

    Saesen, S; Aerts, C; Miglio, A; Carrier, F

    2013-01-01

    Recent progress in the seismic interpretation of field beta Cep stars has resulted in improvements of the physics in the stellar structure and evolution models of massive stars. Further asteroseismic constraints can be obtained from studying ensembles of stars in a young open cluster, which all have similar age, distance and chemical composition. We present an observational asteroseismology study based on the discovery of numerous multi-periodic and mono-periodic B-stars in the open cluster NGC 884. We describe a thorough investigation of the pulsational properties of all B-type stars in the cluster. Overall, our detailed frequency analysis resulted in 115 detected frequencies in 65 stars. We found 36 mono-periodic, 16 bi-periodic, 10 tri-periodic, and 2 quadru-periodic stars and one star with 9 independent frequencies. We also derived the amplitudes and phases of all detected frequencies in the U, B, V and I filter, if available. We achieved unambiguous identifications of the mode degree for twelve of the de...

  13. Emergent criticality in complex turing B-type atomic switch networks.

    Science.gov (United States)

    Stieg, Adam Z; Avizienis, Audrius V; Sillin, Henry O; Martin-Olmos, Cristina; Aono, Masakazu; Gimzewski, James K

    2012-01-10

    Recent advances in the neuromorphic operation of atomic switches as individual synapse-like devices demonstrate the ability to process information with both short-term and long-term memorization in a single two terminal junction. Here it is shown that atomic switches can be self-assembled within a highly interconnected network of silver nanowires similar in structure to Turing’s “B-Type unorganized machine”, originally proposed as a randomly connected network of NAND logic gates. In these experimental embodiments,complex networks of coupled atomic switches exhibit emergent criticality similar in nature to previously reported electrical activity of biological brains and neuron assemblies. Rapid fluctuations in electrical conductance display metastability and power law scaling of temporal correlation lengths that are attributed to dynamic reorganization of the interconnected electro-ionic network resulting from induced non-equilibrium thermodynamic instabilities. These collective properties indicate a potential utility for realtime,multi-input processing of distributed sensory data through reservoir computation. We propose these highly coupled, nonlinear electronic networks as an implementable hardware-based platform toward the creation of physically intelligent machines.

  14. Die kerk en die kommunisme, uitgangspunt en perspektief

    Directory of Open Access Journals (Sweden)

    A. H. Murray

    1970-06-01

    Full Text Available Waar ons onmiddellike opdrag is om die konkrete taak van die kerk in die bestryding van Kommunisme en Marxisme te beskrywe, is ons gedwing om terug te dink aan die eerste grondslae van die vyandelike aanslag — die grondslae waarop sy leer en sy beleid van gewelddadige optrede berus. Want ons het nie te doen met ’n opportunistiese onderneming of ’n imperialistiese waagstuk as dit oor die Kommunisme gaan nie, en ook nie met die blinde opbruising van laere en agterlike volksklasse nie, maar wel met ’n deurdagte en afgeronde heelal-filosofie wat oor die aardbol versprei is en wat op sistematiese wyse en met wetenskaplike strategie ’n aanval op die bestaande Christelike orde maak.

  15. Facile synthesis of B-type carbonated nanoapatite with tailored microstructure

    Energy Technology Data Exchange (ETDEWEB)

    Gualtieri, Magdalena Lassinantti, E-mail: magdalena.gualtieri@unimore.it [Dipartimento Ingegneria “Enzo Ferrari”, Università degli studi di Modena e Reggio Emilia, I-41125 Modena (Italy); Romagnoli, Marcello, E-mail: marcello.romagnoli@unimore.it [Dipartimento Ingegneria “Enzo Ferrari”, Università degli studi di Modena e Reggio Emilia, I-41125 Modena (Italy); Hanuskova, Miriam, E-mail: Miriam.hanuskova@unimore.it [Dipartimento Ingegneria “Enzo Ferrari”, Università degli studi di Modena e Reggio Emilia, I-41125 Modena (Italy); Fabbri, Elena, E-mail: Elena.fabbri@unimore.it [Dipartimento Ingegneria “Enzo Ferrari”, Università degli studi di Modena e Reggio Emilia, I-41125 Modena (Italy); Gualtieri, Alessandro F., E-mail: Alessandro.gualtieri@unimore.it [Dipartimento di Scienze Chimiche e Geologiche, Università degli studi di Modena e Reggio Emilia, I-41121 Modena (Italy)

    2014-12-15

    Nanolime and a phosphate-based chelating agent were used to synthesize B-type carbonated apatite. Developed Rietveld refinement strategies allowed one to determine process yield, product crystallinity as well as structural (unit cell) and microstructural (size, strain) parameters. The effect of synthesis temperature (20–60 °C) as well as Ca/P ratio (1.5–2.5) and solid content (10–30 wt%) of the starting batch on these properties were investigated. FTIR, TEM and gas adsorption data provided supporting evidence. The process yield was 42–60 wt% and found to be governed by the Ca/P ratio. The purified products had high specific surface area (107–186 m{sup 2}/g) and crystallinity (76–97%). The unit cell parameters, correlated to the degree of structural carbonate, were sensitive to the Ca/P ratio. Instead, temperature governed the microstructural parameters. Less strained and larger crystals were obtained at higher temperatures. Long-term aging up to 6 months at 20 °C compensated for higher crystal growth kinetics at higher temperature. - Graphical abstract: Controlled synthesis of carbonated apatite at moderate temperatures using nanolime and sodiumhexametaphosphate as starting reagent. - Highlights: • Chemical synthesis of nano-sized apatite with tailored microstructure was performed. • Colloidal Ca(OH){sub 2} and a phosphorus-based chelating agents were used as reagents. • The method is simple and reproducible which facilitate industrial process scale-up. • Rietveld refinement strategies for product characterization were developed. • Rietveld analyses provided yield, microstructural and structure information.

  16. Die Psychosen bei Epilepsie

    Directory of Open Access Journals (Sweden)

    Glauninger G

    2001-01-01

    Full Text Available In einer Übersicht werden die verschiedenen Formen psychotischer Zustandsbilder bei Epilepsiepatienten, deren Ätiopathogenese und Möglichkeiten der Behandlung dieser Störungen beschrieben. Risikofaktoren finden sich durch neurobiologische Gegebenheiten - besonders bei Mitbeteiligung des Temporallappens, durch psychosoziale Einflüsse und manchmal auch durch medikamentöse Behandlung. Anhand von Fallbeispielen sollen dem Leser typische Krankheitsverläufe von psychotischen Episoden bei Epilepsiepatienten, die zumeist erst bei einer schon länger dauernden Epilepsie auftreten, nähergebracht werden. Es wird deutlich, daß sich die Beschwerden von Patienten mit Epilepsie nicht auf iktale Phänomene beschränken. Bei der Behandlung dieser Patienten kommt einer guten interdisziplinären Zusammenarbeit besondere Bedeutung zu.

  17. The prognostic value of N-terminal proB-type natriuretic peptide in patients with acute respiratory distress syndrome

    Science.gov (United States)

    Lai, Chih-Cheng; Sung, Mei-I.; Ho, Chung-Han; Liu, Hsiao-Hua; Chen, Chin-Ming; Chiang, Shyh-Ren; Chao, Chien-Ming; Liu, Wei-Lun; Hsing, Shu-Chen; Cheng, Kuo-Chen

    2017-01-01

    We investigated whether N-terminal proB-type natriuretic peptide (NT-proBNP) predicts the prognosis of patients with acute respiratory distress syndrome (ARDS). Between December 1, 2012, and May 31, 2015, this observational study recruited patients admitted to our tertiary medical center who met the Berlin criteria for ARDS and who had their NT-proBNP measured. The main outcome was 28-day mortality. We enrolled 61 patients who met the Berlin criteria for ARDS: 7 were classified as mild, 29 as moderate, and 25 as severe. The median APACHE II scores were 23 (interquartile range [IQR], 18–28), and SOFA scores were 11 (IQR, 8–13). The median lung injury score was 3.0 (IQR, 2.50–3.25), and the median level of NT-proBNP was 2011 pg/ml (IQR, 579–7216). Thirty-four patients died during this study, and the 28-day mortality rate was 55.7%. Patients who die were older and had significantly (all p < 0.05) higher APACHE II scores and NT-proBNP levels than did patients who survived. Multivariate analysis identified age (HR: 1.546, 95% CI: 1.174–2.035, p = 0.0019) and NT-proBNP (HR: 1.009, 95% CI: 1.004–1.013, p = 0.0001) as significant risk factors of death. NT-proBNP was associated with poor outcomes for patients with ARDS, and its level predicted mortality. PMID:28322314

  18. Die voorspelling van akademiese prestasie na die eerste universiteitsjaar

    Directory of Open Access Journals (Sweden)

    G. K. Huysamen

    1998-06-01

    Full Text Available The prediction of academic performance after the first year at university. In agreement with findings elsewhere, the correlations of high school performance (Swedish Formula Point and the verbal and nonverbal GSAT scores with the mean percentage marks (MPMs gradually decreased from the first through sixth semester at university, whereas the decrease in the corresponding correlations with the cumulative mean percentage marks (CMPMs was less pronounced. The later the semester for which either an MPM or a CMPM was used as a predictor, the higher the latter tended to correlate with the MPMs of subsequent semesters but these correlations also decreased in size over the ensuing semesters. The best predictor of the MPM of any given semester was either the MPM of the immediately preceding semester or the CMPM of all the preceding semesters. Opsomming In ooreenstemming met bevindings elders, het die korrelasies van hoërskoolprestasie (Sweedse Formulepunt en verbale en nie-verbale ASAT-tellings met die gemiddelde persentasiepunte (GPP's geleidelik van die eerste tot die sesde semester op Universiteit afgeneem, terwyl die afname in die ooreenstemmende korrelasies met die kumulatiewe gemiddelde persentasiepunte (KGP's minder opvallend was. Hoe later die semester waarvan die GGP of KGP as voorspeller gebruik is, hoe hoër was dit geneig om met die GGP's van die daaropvolgende semesters te korreleer, maar die korrelasies het: eweneens met die toename in laasgenoemde semesters in grootte afgeneem. Die beste voorspeller van die GPP van enige gegewe semester was of die GPP van die pas afgelope semester, of die KGP van al die voorafgaande semesters.

  19. Die Wiege stand doch in Africka

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    Kaum ein Forschungsgebiet ist so umstritten wie die Palaeoanthropologie, die Lehre yore Ursprung der Menschheit. Nicht nur die Vorgeschichte, ouch die unmittelbare Entstebung des Homo sapiens entzweit die Experten: Die einen verrnuten die Wiege in Afrika,die anderen gehen davon aus, dass sich tier moderne Mensch auf mehreren Kontinenten gleichzeifig aus Vorfahren eatwickelte,

  20. Die Kunst des Scheiterns

    DEFF Research Database (Denmark)

    Juul, Jesper

    2014-01-01

    Menschen haben von Kindesbeinen an das Verlangen, Erfolge zu erzielen und Kompetenz zu erreichen. Computerspieler entscheiden sich jedoch fortlaufend für eine Aktivität, die oft und wiederholt zum Verlieren führen muss und ein taubes Gefühl der Unfähigkeit erzeugt. Im Kino, im Theatersaal und bei...

  1. Die andere Revolution

    Science.gov (United States)

    Kippenhahn, Rudolf

    2005-05-01

    War Kopernikus der größte Revolutionär des naturwissenschaftlichen Weltbildes? Seine Erkenntnisse waren der Beginn eines jahrhundertelangen Denkprozesses, welcher zur Einsicht führte, dass im Weltall die gleichen physikalischen Gesetze gelten wie auf der Erde.

  2. Die Kosmologie der Griechen.

    Science.gov (United States)

    Mittelstraß, J.

    Contents: 1. Mythische Eier. 2. Thales-Welten. 3. "Alles ist voller Götter". 4. Griechische Astronomie. 5. "Rettung der Phänomene". 6. Aristotelische Kosmololgie. 7. Aristoteles-Welt und Platon-Welt. 8. Noch einmal: die Göttlichkeit der Welt. 9. Griechischer Idealismus.

  3. Die skool en die onderwyser as faktore in die geestesgesondheid van die kind*

    Directory of Open Access Journals (Sweden)

    B. C. Schutte

    1961-03-01

    Full Text Available Ons hou geestesgesondheidsweke, stig beroepsentrums, samel geld in om mense wat geestelik siek is te genees, klae oor die tekort aan psigiaters, kliniese sielkundiges, bedryfsielkundiges, voorligters, skoolpsigoloë,ens. ’n Karige kwarteeu gelede het ons aan al hierdie dinge slegs akademiese aandag gewy. In hierdie kursus wordverskeie tipes kinders bespreek en geleer hoe om hulle probleme te benader.

  4. Improvement of die life in high speed injection die casting

    Institute of Scientific and Technical Information of China (English)

    Yasuhiro Arisuda; Akihito Hasuno; Junji Yoshida; Kazunari Tanii

    2008-01-01

    High-speed injection die casting is an efficient manufacturing technology for upgrading aluminum die-cast products. However, deficiencies (such as die damage in eady period) due to larger load on the molding die compared with conventional technology have brought new challenges. In this study, the cause of damage generated in super high-speed injection was investigated by the combination of experimental observation of the dies and CAE simulation (e.g. die temperature analysis, flow analysis and thermal stress analysis). The potential countermeasures to solve the above problems were also proposed.

  5. Improvement of die life in high speed injection die casting

    Directory of Open Access Journals (Sweden)

    Akihito Hasuno

    2008-11-01

    Full Text Available High-speed injection die casting is an effi cient manufacturing technology for upgrading aluminum die-cast products. However, defi ciencies (such as die damage in early period due to larger load on the molding die compared with conventional technology have brought new challenges. In this study, the cause of damage generated in super high-speed injection was investigated by the combination of experimental observation of the dies and CAE simulation (e.g. die emperature analysis, fl ow analysis and thermal stress analysis. The potential countermeasures to solve the above problems were also proposed.

  6. Die Tambaniprojek: ’n rekenaaranimasie van Die hebsugtige seekoei

    Directory of Open Access Journals (Sweden)

    Rita M.C. Swanepoel

    2012-11-01

    Full Text Available Hierdie artikel bied ’n ondersoek na en refleksie op die tegnieke en die produksieprosesse wat gebruik is in die omskakeling van ’n tradisionele Ngano-Venda-volksverhaal, Die hebsugtige seekoei, vanaf borduurwerk in ’n digitale animasiefilm. Die artikel word gerig deur ’n metode wat afgelei is uit ’n praktykgebaseerde navorsingsmodel vir skeppende uitsette. Hierdie navorsingsmodel omskryf wyses waarvolgens skeppende uitsette as geldige navorsingsopsies gereken kan word. Die metode bestaan uit die dokumentering van en refleksie ten opsigte van die projek in drie fases, naamlik pre-produksie, produksie en post-produksie. Die Tambani-borduurwerkprojek is ’n gemeenskapsuitreikingsinisiatief wat deur Ina le Roux van stapel laat loop is. Ngano is die versamelwoord vir tradisionele Vendavolksverhale. In hierdie artikel argumenteer ons dat rekenaaranimasietegnieke wel suksesvol geïmplementeer word in die digitale omskakeling van ’n Venda-volksverhaal wat oorspronklik uit ’n mondelinge tradisie stam. Ons demonstreer hierdie argument aan die hand van Christiaan van der Westhuizen se omskakeling van Die hebsugtige seekoei in ’n rekenaaranimasie.

  7. Impact of hemoglobin on plasma pro-B-type natriuretic peptide concentrations in the general population

    DEFF Research Database (Denmark)

    Nybo, Mads; Benn, Marianne; Mogelvang, Rasmus;

    2007-01-01

    BACKGROUND: Age, sex, and renal function contribute to variations in plasma concentrations of B-type natriuretic peptide (BNP) and its molecular precursor (proBNP). Recent studies indicate that anemia may also affect proBNP concentrations in patients with heart failure or stroke. However, the imp......BACKGROUND: Age, sex, and renal function contribute to variations in plasma concentrations of B-type natriuretic peptide (BNP) and its molecular precursor (proBNP). Recent studies indicate that anemia may also affect proBNP concentrations in patients with heart failure or stroke. However...

  8. Herausforderungen durch die deutsche Wiedervereinigung

    Science.gov (United States)

    Stäglin, Reiner

    Die Wiedervereinigung stellte auch die Statistik vor große Aufgaben. Die als Organ der staatlichen Planung staatsnah orientierte Statistik der DDR musste auf das zur Neutralität und wissenschaftlichen Unabhängigkeit verpflichtete System der Bundesrepublik umgestellt werden. Ebenso verlangten die Universitäten eine Neuorientierung. Die Deutsche Statistische Gesellschaft hat sich vor allem dreier Aufgaben mit großem Engagement, aber auch mit Bedachtsamkeit angenommen: Aufnahme und Integration der Statistiker aus den neuen Bundesländern in die Gesellschaft, Begleitung der Neuausrichtung des Faches Statistik an deren Hochschulen und Sicherung sowie Nutzung von Datenbeständen der ehemaligen DDR.

  9. Die historiese betroubaarheid van die aartsvadervertellinge. 'n Beknopte bespreking van die huidige debat na aanleiding van die jongste publikasie

    Directory of Open Access Journals (Sweden)

    W. Vosloo

    1982-08-01

    Full Text Available Die afgelope twintig jaar was daar �n toenemende belangstelling in die aartsvadervertellinge in Genesis. Benewens die talle tydskrifartikels het skrywers soos die volgende ook boeke oor die onderwerp die lig laat sien: A. Parrot (1962, W. M. Clark (1964, R. Kilian (1966, R. E. Clements (1967, N. Lohfink (1967, H. Weidemann (1968, R. Martin-Achard (1969, T. L. Thompson (1974, J. van Seters (1975, J. P. Fokkelman (1975, C. Westermann (1976, R. Rendtorff (1977, J. Bright (1977, W. McKane (1979 en A. R. Millard en D. J. Wiseman (1980.

  10. Influence of orographically induced transport process on the structure of the atmospheric boundary layer and on the distribution of trace gases; Einfluss orographisch induzierter Transportprozesse auf die Struktur der atmosphaerischen Grenzschicht und die Verteilung von Spurengasen

    Energy Technology Data Exchange (ETDEWEB)

    Kossmann, M.

    1998-04-01

    The influence of terrain on the structure of the atmospheric boundary-layer and the distribution of trace gases during periods of high atmospheric pressure was studied by means of meteorological and air-chemical data collected in September 1992 during the TRACT experiment in the transition area between the upper Rhine valley and the northern Black Forest. The emphasis was on the investigation of the development of the convective boundary layer, the formation of thermally induced circulation systems, and the orographic exchange between the atmospheric boundary layer and the free troposphere. Thanks to the extensive measurements, phenomena not yet described in literature could be verified by case studies, and processes that had only been established qualitatively could be quantified. (orig.)

  11. Modeling the Mechanical Performance of Die Casting Dies

    Energy Technology Data Exchange (ETDEWEB)

    R. Allen Miller

    2004-02-27

    The following report covers work performed at Ohio State on modeling the mechanical performance of dies. The focus of the project was development and particularly verification of finite element techniques used to model and predict displacements and stresses in die casting dies. The work entails a major case study performed with and industrial partner on a production die and laboratory experiments performed at Ohio State.

  12. FEM Simulation of Welding Quafity in Porthole Die Extrusion

    Institute of Scientific and Technical Information of China (English)

    HE Youfeng; XIE Shuisheng; CHENG Lei; HUANG Guojie; FU Yao

    2011-01-01

    The effects of die structure such as the height of the welding, the welding angle and chamber the shape of the bridge on the welding quality of profiles were investigated by means of the commercial software DEFORM-3D. The numerical simulation results show that the welding quality of the hollow profiles has great sensitive to the die structure. With increasing the welding chamber height and decreasing the welding angle of the die leg can improve the welding quality. In addition, the welding quality index k of the new designed shape of the die leg is little down from 4.1 to 3.9 comparing the standard leg.

  13. Film Presentation: Die Urknallmaschine

    CERN Multimedia

    Carolyn Lee

    2010-01-01

    Die Urknallmaschine, an Austrian film by Gerd Baldauf, narrated by Norbert Frischauf (Alpha Österreich - ORF, 2009).  In CERN’s gigantic complex particles are accelerated to almost the speed of light, brought to collision and made to divide into even smaller particles. Public opinion of CERN’s research is also divided. Sceptics fear that black holes may be created. Might the goal to study the origin of the world lead to its destruction? The Austrian researcher Norbert Frischauf worked at CERN for many years. With his guidance it is possible to explore the world’s largest research centre, get a glimpse of the fascinating work the scientists do there and take a crash course in particle physics. Die Urknallmaschine will be presented on Friday, 25 June from 13:00 to 14:00 in the Main Auditorium. Language: German

  14. Dying for security

    Directory of Open Access Journals (Sweden)

    Buchan, Bruce

    2011-01-01

    Full Text Available If political statements and media coverage are any guide, it seems Australians today are dying for security. At no other moment in our history has the spectre of war and terrorism so haunted popular, political and scholarly perceptions of Australia’s colonial past and of its geopolitical future. And yet, debates over colonial war or genocide and contemporary terrorism have been conducted in more or less complete isolation. In this article I argue that our contemporary obsession with ‘security’ is premised on the perennial threat of ‘insecurity’. This is the problem of in/security, and it has played a central role in the development of Western political thought. More importantly, its formulation in Western political thought provided a powerful justification for the violence of the early decades of Australia’s colonisation during which Indigenous Australians could also be said to have been dying for security.

  15. Dying for Security

    Directory of Open Access Journals (Sweden)

    Bruce Buchan

    2011-03-01

    Full Text Available If political statements and media coverage are any guide, it seems Australians today are dying for security. At no other moment in our history has the spectre of war and terrorism so haunted popular, political and scholarly perceptions of Australia’s colonial past and of its geopolitical future. And yet, debates over colonial war or genocide and contemporary terrorism have been conducted in more or less complete isolation. In this article I argue that our contemporary obsession with ‘security’ is premised on the perennial threat of ‘insecurity’. This is the problem of in/security, and it has played a central role in the development of Western political thought. More importantly, its formulation in Western political thought provided a powerful justification for the violence of the early decades of Australia’s colonisation during which Indigenous Australians could also be said to have been dying for security.

  16. Dying from cardiac tamponade

    Directory of Open Access Journals (Sweden)

    Powari Manish

    2007-09-01

    Full Text Available Abstract Background To determine the causes of cardiac tamponade (CT, focussing especially on haemopericardium (HP, as a terminal mode of death, within a 430,000 rural English population. Methods Our hospital mortuary register and, all postmortem reports between 1995 and 2004 inclusive, were interrogated for patients dying of CT or HP. The causes of CT/HP and selected morphological characteristics were then determined. Results 14,368 postmortems were performed in this period: of these, 461 patients died of CT. Three cases were due to non-haemorrhagic pericardial effusion. HP accounted for the remaining 458 cases of which, five were post-traumatic, 311 followed rupture of an acute myocardial infarction (RAMI, 138 after intra-pericardial rupture of dissecting ascending aortic aneurysms (RD3A and four were due to miscellaneous causes. HP was more commonly due to RAMI. Men tended to die from RAMI or RD3A earlier than women. RAMI or RD3A were commoner in men Two thirds of RAMI were associated with coronary artery thrombosis. Anterior free wall rupture was commonest overall, and in women, but posterior free wall rupture was commoner in men. The volume of intrapericardial blood in RAMI (mean = 440 ml and RD3A (mean = 498 ml varied between 150 and 1000 ml: intrapericardial blood volume was greater in men than in women dying from either RAMI or RD3A. Conclusion At postmortem, CT is most often related to HP, attributable to either RAMI or intrapericardial RD3A. Post-traumatic and other causes of CT are infrequent.

  17. Verrekening van die kragveld van die verbond in die inkleding van die kommunikatiewe driehoeksverhouding tussen teks, hoorder en prediker

    Directory of Open Access Journals (Sweden)

    Friedrich W. de Wet

    2012-09-01

    Full Text Available In hierdie artikel word die kommunikatiewe driehoeksverhouding tussen die Bybelse teks, die hoorders en die prediker homileties verken. Die probleemstelling waarmee gewerk word handel oor potensiële versteurings wat kan plaasvind in hierdie driehoeksverhouding wanneer die hoorders en die prediker in hulle menslike beperktheid in verbinding gebring word met die ewige Woord van God soos dit in die Bybelse teks na vore kom. In die loop van die artikel word die volgende aspekte verken: ’n Ideale tipering van die verhouding tussen die teks, hoorders en prediker waarin al drie faktore ’n regmatige plek het; die maniere waarop die kommunikatiewe driehoek in die spanningsveld tussen teks, hoorders en prediker kan skeeftrek; en pneumatologiese verankering van die kommunikatiewe driehoek in die kragveld van die verbondsruimte, waarin Jesus Christus versoenend (integrerend teenwoordig is. Die gevolgtrekking waartoe gekom word, is dat die prediker in die kragveld van die verbond in staat gestel word om getrou te bly aan die teks (waarin God aan die Woord kom, aan die hoorders (as mededeelgenote in die genade van God sowel as – in missionêre konteks – mense wat geroep word om deelgenote in hierdie genade te word en aan hom- of haarself (as nuwe mens in Christus sonder dat die verbintenis aan een element in die  kommunikatiewe driehoek die verbintenis aan die ander versteur of laat disintegreer.Reckoning with the force field of the covenant in aligning the communicative triangle between text, listener and preacher. In this article the communicative triangular relationship between the Biblical text, the listeners and the preacher is reflected upon from a homiletic point of view. The problem statement deals with potential distortions in this triangular relationship when the listeners and preacher (in their human finitude are brought into contact with the eternal Word of God as it proceeds from the Biblical text. In the course of the article the

  18. Discovery of a magnetic field in the early B-type star σ Lupi

    NARCIS (Netherlands)

    Henrichs, H.F.; Kolenberg, K.; Plaggenborg, B.; Marsden, S.C.; Waite, I.A.; Landstreet, J.D.; Wade, G.A.; Grunhut, J.H.; Oksala, M.E.

    2012-01-01

    Context. Magnetic early B-type stars are rare. Indirect indicators are needed to identify them before investing in time-intensive spectropolarimetric observations. Aims. We use the strongest indirect indicator of a magnetic field in B stars, which is periodic variability of ultraviolet (UV) stellar

  19. Data Mining Rules for Ultrasonic B-Type Detection and Diagnosis for Cholecystolithiasis

    Institute of Scientific and Technical Information of China (English)

    LOU Wei; YAN Li-min; HE Guo-sen

    2004-01-01

    This paper presents realistic data mining based on the data of B-type ultrasonic detection and diagnosis for cholrcystolithiasis (gallbladder stone in biliary tract) recorded by a district central hospital in Shanghai during the past several years. Computer simulation and modeling is described.

  20. Die amtliche Kinder- und Jugendhilfestatistik

    OpenAIRE

    Schilling, Matthias

    2003-01-01

    Unter Rückgriff auf verschiedene wissenschaftliche Methoden umfasst die Dissertation eine differenzierte Untersuchung der amtlichen Kinder- und Jugendhilfestatistik (KJH-Statistik). Da die wissenschaftliche Sozialpädagogik erst langsam und zögerlich beginnt, die amtliche Statistik der Kinder- und Jugendhilfe wahrzunehmen, liegt das Forschungsinteresse darin, dass eine grundlegende und umfassende wissenschaftliche Analyse der Möglichkeiten und Grenzen der KJH-Statistik vorgenommen wird. Die KJ...

  1. The Structure and Properties of Inductively Coupled Plasma Assisted Magnetron Sputtered Nanocrystalline NbN Coatings in Corrosion Protective Die Casting Molds.

    Science.gov (United States)

    Chun, Sung-Yong

    2016-02-01

    Niobium nitride coatings for the surface modified die casting molds with various ICP powers have been prepared using ICP assisted magnetron sputtering. The applied ICP power was varied from 0 to 200 W. The deposited coatings were characterized post-deposition using X-ray diffractometry (XRD) and atomic force microscopy (AFM). Single NbN phased coatings with nano-grain sized (hardness of each coating were evaluated from potentiostat and nanoindentator. Superior corrosion protective coatings in excess of 13.9 GPa were deposited with assistance of ICP plasma during sputtering.

  2. Precision die design by the die expansion method

    CERN Document Server

    Ibhadode, A O Akii

    2009-01-01

    This book presents a new method for the design of the precision dies used in cold-forging, extrusion and drawing processes. The method is based upon die expansion, and attempts to provide a clear-cut theoretical basis for the selection of critical die dimensions for this group of precision dies when the tolerance on product diameter (or thickness) is specified. It also presents a procedure for selecting the minimum-production-cost die from among a set of design alternatives. The mathematical content of the book is relatively simple and will present no difficulty to those who have taken basic c

  3. Aard, funksie en invloed van die Literatuur

    Directory of Open Access Journals (Sweden)

    J. van der Elst

    1981-05-01

    Full Text Available Binne die raam werk van die tema van hierdie simposium gaan dit om twee komponente:die Literatuur, meer bepaald die letterkundige werk of woordkunswerk met sy drie genres endie gemeenskap, die onlvangers of belewers van die Literatuur of doodgewoon die lesers.

  4. Videobasierte Unterrichtsbeobachtung: die Quadratur des Zirkels?

    OpenAIRE

    Fankhauser, Regula

    2012-01-01

    Seit einigen Jahren wird Unterrichtsforschung vermehrt videobasiert angegangen. Die methodologische Diskussion, die die Weiterentwicklung des Instrumentariums begleitet, kreist dabei zentral um die Frage der Invasivität der Aufzeichnungstechnik und möglicher Kameraeffekte. Je nach methodologischer Ausrichtung wird diesem Problem anders begegnet: So versucht die abbildtheoretische Unterrichtsvideografie, die Invasivität zu kontrollieren. Qualitative Methoden wie die Kameraethnografie dagegen m...

  5. Gods hand in die natuur

    Directory of Open Access Journals (Sweden)

    A. Duvenage

    1966-03-01

    Full Text Available Kan ons van so iets spreek? Daaroor bestaan daar seker geen verskil nie. Die Bybel is vol daarvan van Genesis tot Openbaring. God is Skepper. ’n Ander vraag is of ons God ook kan ken uit wat daar in die natuur gebeur? Verloop alles nie maar volgens ewige natuurwette waaraan tog niks verander kan word nie? Ons bely egter dat die Here nie net in die hart van die mens gelê het wat ons noem die „saad van die religie” nie (semen religionis, maar dat ons Hom ook ken deur die skep- ping, onderhouding en regering van die hele wêreld, aangesien dit voor ons oë is soos ’n mooi boek waarin alle skepsels, groot en klein, die letters is wat ons die onsigbare dinge van God duidelik laat sien, nl. sy ewige krag en Goddelikheid ...; dinge wat almal genoegsaam is om die mense te oortuig en hulle alle verontskuldiging te ontneem (Art. 2 Ned. Gel. Bel..

  6. Die eunug in die klassieke mitologie en samelewing

    Directory of Open Access Journals (Sweden)

    F. P. Retief

    2002-09-01

    Full Text Available Die konsep, eunug, wat na ’n gekastreerde persoon (gewoonlik manlik verwys, het sy oorsprong in die mitologie. Van hier word dit deurgevolg na die Klassieke tydperk. Kastrering vir religieuse redes was deel van godsdiensrituele gekoppel aan verering van aardgodinne en fertiliteit. Die kultusse wat aan die godinne Kubele, Hekate, Atargatis-Dea, Astarte, Artemis en Innana-Ishtar gewy was en wat deur eunugpriesters bedien was, word beskryf. Kastrering vir niereligieuse redes, oorwegend weens sosio-ekonomiese oorwegings, het waarskynlik tydens die 2de millennium v.C. sy oorsprong in Midde-Oosterse lande gehad vanwaar dit teen ongeveer die 5de eeu v.C. na Griekeland, en twee eeue later na Rome uitgebrei het. ’n Oorsig word gelewer van die invloed en rol van die eunug ten tye van die klassieke beskawing. Die sogenaamde “kongenitale eunug” waar hipogonadisme weens ’n aangebore letsel ontstaan, ’n baie seldsame verskynsel, word nie verder bespreek nie.

  7. Die wisselende rol van kontinuïteit en diskontinuïteit in die geskiedenis van die filosofie en die wiskunde

    Directory of Open Access Journals (Sweden)

    Danie F.M. Strauss

    2017-01-01

    Full Text Available Hierdie artikel wil lig werp op die onvermydelikheid van diskreetheid en kontinuïteit as primitiewe (ondefinieerbare verklaringswyses in die geskiedenis van die filosofie en die wiskunde. Dit beliggaam die algemene uitdaging om rekenskap van die samehang van iets wat uniek is te gee. Gödel beklemtoon die samehang van ‘primitiewe begrippe’. Die Griekse filosofie het reeds die ruimtelike geheel-dele-relasie – en die oneindige verdeelbaarheid daarvan – ontdek. Gedurende en na die Middeleeue het filosowe wipplank gery tussen ’n atomistiese waardering van die kontinuum en die teenoorgestelde daarvan, wat byvoorbeeld in die denke van Leibniz aangetref word as die gepostuleerde wet van kontinuïteit (lex continui. Die ontdekking van ‘inkommensurabiliteit’ (irrasionale getalle deur die Grieke het aanleiding gegee tot die eerste grondslagkrisis van die wiskunde en die geometrisering daarvan. Leibniz en Newton kon die probleme rondom die limietbegrip nie besleg nie en spoedig sou dit tot die derde grondslagkrisis van die wiskunde aanleiding gee. Dit het Frege en die ‘kontinuum-teoretici’ daartoe gebring om prioriteit aan die kontinuum te gee – diskreetheid is ’n katastrofe. Onlangs waardeer Smooth Infinitesimal Analysis kontinuïteit as iets wat ’n ‘ongebroke en ononderbroke geheel’ daarstel. Die intuïsionistiese wiskunde het opnuut aangesluit by die klem op die ruimtelike geheel-dele-relasie. Ondanks pogings om kontinuïteit eksklusief aritmeties en ruimtelik te verstaan bevestig die geskiedenis van die filosofie en die wiskunde onmiskenbaar dat die medekondisionerende rol van hierdie twee wyses van verklaring ’n konstante metgesel in die nadenke oor kontinuïteit en diskontinuïteit sou bly. (Die rol van kontinuïteit en diskontinuïteit in die fisika en biologie sal in ’n aparte artikel ondersoek word.

  8. Sal die ‘ewolusie’ vanaf biologie na lewenswetenskappe ‘uitsterwing’ van die vakgebied voorkom?

    Directory of Open Access Journals (Sweden)

    Johanna G. Ferreira

    2012-03-01

    Full Text Available In hierdie artikel word die wysiging van die skoolvak van ‘biologie’ na ‘lewenswetenskappe’ bespreek, asook die gepaardgaande en verwagte implikasies van die verandering. Die vraag word gestel of die beoogde wysiging wel noemenswaardig is en of dit enigsins ‘n verskil aan die dalende belangstelling in die lewenswetenskappe op tersiêre vlak sal maak. Die wysigings in die nuwe kurrikula verhoog die relevansie van die vakinhoud vir leerders en vir die gemeenskap, maar sekere kwessies kry nie aandag nie. Voorstelle word gemaak om die kurrikulum te wysig en onderrigmetodes aan te pas om die nodige vaardighede by leerders te vestig.

  9. Die funksie van die belydenis in die struktuur van die kerk en die betekenis daarvan vir die predikant

    Directory of Open Access Journals (Sweden)

    G. C. Velthuysen

    1985-01-01

    Full Text Available The function of the Confession in the structure of the church and its ministerial implications In this paper it is argued that the church is'nt a monolithical structure but that it is constituted by various constituent elements, all of which are interdependent, interrelated and indispensable. Of these, the most important is the Confession. It constitutes the character and 'personality' of a church and as such is a constituent force in each of the other elements treated here, namely theology, the proclamation of the gospel and church-law. The minister finds himself in an ambivalent relation to the gospel. This is due to the fact that each of the other constituent elements stands in an ambivalent relation to the Confession while the minister is in relation to each of them individually as they stand in relation amongst themselves and to all of them collectively.

  10. The Utility of B-type Natriuretic Peptide to Predict Prognosis of Acute Myocardial Infarction Patients Complicated With Cardiogenic Shock Treated With Intra-aortic Ballon Counterpulsation

    Institute of Scientific and Technical Information of China (English)

    Jiang Xie; Xian Wang; Chen Tan

    2008-01-01

    Objectives To assess the prognostic value of B-type natriuretic peptide (BNP) in severe AMI patients treated with intra-aortic ballon counterpulsation(IABP).Methods A total of 42 AMI patients with cardiogenic shock were retrospectively studied.BNP plasma level was recorded in the 24th hour and 4th day after myocardial infarction.The different mortality were compared among patients with different BNP levels.Results With aggressive treatment,20 patients survived short term hospitalization.Plasma concentration of BNP in dying patients is much higher than in survivals (1369±353 vs 651±302 pg/ml.P<0.01).Patients with BNP higher than 1474 pg/mL had a mortality of 92.9%.Conclusions Elevated BNP level in AMI patients with cardiogenic shock treated with IABP is highly associated with poor prognosis.

  11. Reuchlin und die Kabbala

    OpenAIRE

    2008-01-01

    Auszug: Hundert Jahre nachdem Johannes Reuchlin sein wissenschaftliches Werk vollendet hatte, war der von ihm hinterlassene Eindruck auf die europäische Wissenschaft und das europäische Denken so nachdrücklich, daß er - liebe- oder vorwurfsvoll - einmal >Rabbi Capnion< genannt wurde. Und wirklich - so meint Joseph Blau in seiner Darstellung der christlichen Kabbala - habe Reuchlin der hebräischen Literatur mehr gedient als mancher ordentliche Rabbiner. Ähnlich hat Gershom Scholem, der Begründ...

  12. Die Mythosphilosophie Ernst Cassirers

    DEFF Research Database (Denmark)

    Pedersen, Esther Oluffa

    Bogen undersøger Ernst Cassirers filosofiske hovedværk - Die Philosophie der symbolischen Formen - for at finde frem til, hvilken betydning det har, at Cassirer inddrager myten som den menneskelige kulturs grundform og dermed på mange måder sidestillet med videnskab, sprog og kunst. Der...... argumenteres for, at netop arbejdet med myten muliggjorde en frugtbar åbning af erkendelsesteorien i retning af udtryksfænomenet og følelsers betydning for menneskets livsverden. Bogens anden del ser nærmere på, hvordan Cassirer bruger sin mytefilosofi fra 1920'erne til at forstå 1940'ernes fascistiske...

  13. Die hermeneutiek van gereformeerde kerkreg

    Directory of Open Access Journals (Sweden)

    Andries le Roux du Plooy

    2012-09-01

    Full Text Available Die artikel het op die belangrikheid en noodsaaklikheid van ‘n hermeneutiek vir die gereformeerde kerkreg gefokus. Die kerkregtelike dokument wat besonderlik ter sake was, is die kerkorde van die Gereformeerde kerke in Suid-Afrika, met sy besondere band met die Dordtse kerkorde van 1618 en 1619. Agtereenvolgens is aandag gegee aan die volgende aspekte soos (1 die eiesoortige aard van ‘n kerkorde as ‘n teologiese dokument en teks, in onderskeiding van regsdokumente; (2 die aard van die hermeneutiek van kerkreg; (3 enkele teorieë oor die interpretasie of uitleg van tekste, veral regstekste en (4 normatiewe vooronderstellings en reëls vir die interpretasie en verstaan van die teks en artikels van die kerkorde asook besluite van kerklike vergaderinge. Die gevolgtrekking was dat weinig indringende navorsing gedoen is oor die saak van hermeneutiek vir kerkreg, hoewel dit noodsaaklik is. Duidelike hermeneutiese reëls is gesuggereer en verduidelik, wat sou kon meehelp dat kerke en kerklike vergaderinge die artikels van die kerkorde asook besluite en reglemente wat daarop berus het, kan interpreteer en toepas.The hermeneutics of reformed church polity. The article focused on the importance and urgency of a design for reformed hermeneutics on church polity. The Church Order referred to in the article is the Church Order of the Reformed Churches in South Africa, which are closely related to the Church Order of Dordt of 1618 and 1619. The following aspects received attention namely (1  the unique character of a Church Order, in comparison to and distinguished from legal documents and statutes; (2 the character and nature of hermeneutics of church polity; (3 theories of interpretation in the common law tradition and their relevance to church polity and (4 normative presuppositions and marks for the interpretation and understanding of the text and articles of the Church Order, as well as the resolutions of church assemblies. It was found that

  14. Die andersheid van Die verdwaalde land – die waarheid as storie vertel

    Directory of Open Access Journals (Sweden)

    M. Hattingh

    1993-05-01

    Full Text Available Die verdwaalde land was written by Abraham Phillips, a so-called Coloured man from a South African working class background; someone who has no knowledge of literary conventions. The question arises: how can such a text be read without its uniqueness being affected by biased preconceptions? This article shows that post-structurally inspired theories on colonial discourse reveal perspectives on the complexity within the simplicity of this story. In this analysis of Die verdwaalde land particular emphasis is placed on identifying the framing strategies through which images and presentations of the Self and Other are created. Literary conventions are exposed as mechanisms which demarcate meaning, which in principle do not differ much from the manipulative strategies which define identity in the real world.Irrespective of nationality and time the line at which light race meets dark is the line at which human sociality is found at the lowest ebb; and wherever that line conies into existence there arc found the darkest shadows which we humans have cast by our injustice and egoism across the earth. (Olive Schreiner - Thoughts on South Africa

  15. Die verband tussen lokus van beheer en die werks prestasie van swart bemarkers in die lewensversekeringsbedryf

    Directory of Open Access Journals (Sweden)

    E. L. Coetzer

    1997-06-01

    Full Text Available The relationship between locus of control and the work performance of black marketers in the life assurance industry. The aim of the study was to establish the relationship between locus of control and the work performance of black marketers in the life assurance industry. These constructs were selected by virtue of the lack of empirical research regarding the assumed relationship between them. The Locus of Control Scale of Schepers (1995 was used for measuring locus of control. Work performance was measured by the commission earned per month by the marketer, the number of policies generated by the marketer, as well as the percentage of lapsed policies. The relevant measurements were obtained in respect of a sample of 149 black marketing personnel. The results indicated a modest but statistically significant relationship between external locus of control and the work performance of black marketers. Opsomming Die doel van die studie was om die verband tussen lokus van beheer en die werksprestasie van swart bemarkers in die lewensversekeringsbedryf te bepaal. Hierdie konstrukte is gekies op grond van die gebrek aan empiriese navorsing rakende die veronderstelde verband tussen genoemde konstrukte. Die Lokus van Beheer-vraelys van Schepers (1995 is in die meting van lokus van beheer gebruik. Werksprestasie is aan die hand van kommissie per maand verdien, aantal polisse gegenereer deur 'n bemarker en die persentasie vervalde polisse, gemeet. Die tersaaklike metinge is verkry ten opsigte van 'n steekproef van 149 swart bemarkers. Die resultate toon 'n klein, dog statisties beduidende verband tussen eksterne lokus van beheer en die werksprestasie van swart bemarkers in die lewensversekeringsbedryf.

  16. Is die ortodoksie se verstaan van die sondeval belemmerend vir die gesprek tussen teologie en natuurwetenskap?

    Directory of Open Access Journals (Sweden)

    Johan Buitendag

    2012-09-01

    Full Text Available In hierdie artikel is betoog dat die Gereformeerde Ortodoksie se begrip van die sondeval ’n  belemmering  was  vir  die  gesprek  tussen  teologie  en  natuurwetenskap.  Die  rede hiervoor was dat dit ten eerste ’n bepaalde verstaan van liniêre tyd nahou en ten tweede dat dit ’n bonatuurlike ingryp veronderstel het. Albei hierdie aspekte het die debat onnodig problematiseer. Die argument is ontwikkel deur eerstens die probleem te definieer, gevolg deur ’n uiteensetting van die standpunte van Augustinus en Calvyn onderskeidelik oor die sondeval. As ’n heuristiese sleutel is die konsepte van infralapsarisme en supralapsarisme aangewend om die tema te ontleed. Die artikel is afgesluit met die oortuiging dat die imago Dei ’n beliggaamde menslike persoon is wat biologies in die geskiedenis in terme van selfbewussyn en morele verantwoordelikheid ontluik het.Is the Orthodoxy’s notion of the Fall inhibitory for the dialogue between theology and science? In this article it was argued that the Reformed Orthodoxy’s interpretation of the Fall had become an impediment in the dialogue between theology and science. The reason was that it assumed firstly a specific understanding of linear time and secondly a metaphysical intervention. Both events were unnecessarily problematising the debate. The argument was deployed by stating the problem, followed by an exposition of the views of Augustine and Calvin on the Fall. As a heuristic key, the concepts of infralapsarism and supralapsarism were applied respectively to analyse the topic. The article concluded with the conviction that the imago Dei is an embodied human person that had biologically emerged in history as a center of self-awareness, and moral responsibility.

  17. Sedimentêre omgewings van die Inhaca-eilandstelsel met spesiale verwysing na die petrografiese en geochemiese eienskappe van die sedimente spesiale verwysing na die petrografiese en geochemiese eienskappe van die sedimente

    Directory of Open Access Journals (Sweden)

    Marieke Peché

    2011-09-01

    Full Text Available Die Inhaca-eilandstelsel is geleë langs die suidooskus van Mosambiek. Die oostekant van die stelsel grens aan die Indiese Oseaan en die westekant aan die Baai van Maputo. Hierdie eilandstelsel bestaan uit Inhaca- en Portugese eiland, asook ’n groep sandbanke wat van die noordlike punt van Inhaca na Portugese eiland strek. Die doel van hierdie studie is om die verskillende moderne en oer-sedimentêre omgewings op die eilandstelsel te identifiseer en te beskryf, die invloed van getye en golfaksie op die moderne sedimentêre omgewing vas te stel en die geochemiese en petrografiese samestelling van die geologiese eenhede te bepaal.

  18. Isolation and Synthesis of Laxaphycin B-Type Peptides: A Case Study and Clues to Their Biosynthesis

    Directory of Open Access Journals (Sweden)

    Louis Bornancin

    2015-12-01

    Full Text Available The laxaphyci’s B family constitutes a group of five related cyclic lipopeptides isolated from diverse cyanobacteria from all around the world. This group shares a typical structure of 12 amino acids from the l and d series, some of them hydroxylated at the beta position, and all containing a rare beta-amino decanoic acid. Nevertheless, they can be differentiated due to slight variations in the composition of their amino acids, but the configuration of their alpha carbon remains conserved. Here, we provide the synthesis and characterization of new laxaphycin B-type peptides. In doing so we discuss how the synthesis of laxaphycin B and analogues was developed. We also isolate minor acyclic laxaphycins B, which are considered clues to their biosynthesis.

  19. Isolation and Synthesis of Laxaphycin B-Type Peptides: A Case Study and Clues to Their Biosynthesis.

    Science.gov (United States)

    Bornancin, Louis; Boyaud, France; Mahiout, Zahia; Bonnard, Isabelle; Mills, Suzanne C; Banaigs, Bernard; Inguimbert, Nicolas

    2015-12-05

    The laxaphyci's B family constitutes a group of five related cyclic lipopeptides isolated from diverse cyanobacteria from all around the world. This group shares a typical structure of 12 amino acids from the l and d series, some of them hydroxylated at the beta position, and all containing a rare beta-amino decanoic acid. Nevertheless, they can be differentiated due to slight variations in the composition of their amino acids, but the configuration of their alpha carbon remains conserved. Here, we provide the synthesis and characterization of new laxaphycin B-type peptides. In doing so we discuss how the synthesis of laxaphycin B and analogues was developed. We also isolate minor acyclic laxaphycins B, which are considered clues to their biosynthesis.

  20. Thermal expansion behavior of A- and B-type amylose crystals in the low-temperature region.

    Science.gov (United States)

    Kobayashi, Kayoko; Kimura, Satoshi; Naito, Philip-Kunio; Togawa, Eiji; Wada, Masahisa

    2015-10-20

    The thermal expansion behaviors of A-type and B-type amylose crystals, which were prepared by recrystallization of short amylose chains synthesized by phosphorylase, were investigated using synchrotron X-ray powder diffraction between 100 and 300K. For both types of crystals, the room-temperature phase (RT phase), which is the usually observed phase, transitioned to a low-temperature phase (LT phase), on cooling. The phase transitions took place reversibly with rapid changes in the unit-cell parameters around 200-270K. The differences between the RT and LT phase were investigated using solid-state (13)C NMR spectroscopy, which revealed there were changes in molecular chain conformations. These results suggest that the phase transition of water molecules on the crystalline surfaces affects the thermal behavior and structure of polysaccharide crystals.

  1. On the Structure Optimization and Design System Development of Die Casting Mould%压铸模具结构优选与设计系统开发

    Institute of Scientific and Technical Information of China (English)

    高峰

    2014-01-01

    介绍了压力铸造成形原理及其工艺过程、剖析了压力铸造成形工艺的优点和存在的缺陷;总结了压力铸造技术的发展历史、应用范围及中国压力铸造生产产品应用领域的多元性,展示了中国压力铸造业发展的广阔前景。%This paper introduces the principle and forming process of the pressure casting and analyzes the advantages and disadvantages of pressure casting forming technology. It summarizes the development history and application range of the pressure casting technology and Chinese pressure casting product diversity,and shows the prospect of the development of Chinese die casting industry.

  2. ANSYS 的生物质成型机环模结构分析%The Structure Analysis of Biomass Ring Die Based on ANSYS

    Institute of Scientific and Technical Information of China (English)

    袁晓明; 徐静云; 韩秀荣; 葛翔; 王宏宇

    2015-01-01

    根据生物质压块环模成型机的成型过程和机理分析,研究了环模的受力状况,分析了物料变化对攫入角β选取的影响;建立了环模挤压力学模型,借助ANSYS 有限元分析软件对环模孔进行了力学分析。研究结果表明,环模锥形孔对生物质原料的成型影响较大,且在锥点处 y 向应力最大,减小应力的最佳开孔角度为9°~14°。该研究能够为改善生物质压块成型机环模的受力状况、降低环模的磨损、延长环模的使用寿命提供理论依据。%According to the molding process and mechanism of straw biomass briquetting , this paper studies the force conditions of ring die and analyzes the influence of the swoop angle (β) in the different materials .Then the finite ele-ment analyses based on the mechanical models are done by ANSYS .The results show that the conical holes have a grea-ter impact on molding of the biomass materials , and the maximum stress of Y axis locates at the cane point .The opening angle of 9°~14°is helpful to reduce stress at the cane point .It has provided a theoretical basis for improving force con-dition, reducing wearing and extending the service life of the ring die .

  3. Die invloed van herbivorie en vuur op die oorlewing van sekere meerjarige kruide langs die Sabierivier, Kruger Nasionale Park

    Directory of Open Access Journals (Sweden)

    H. Myburgh

    2012-03-01

    Full Text Available Die groot vloede wat in die jaar 2000 in die Kruger Nasionale Park plaasgevind het, het dierivieroewerplantegroei versteur. Dit het die geleentheid gebied om heinings op te rig langsdie Sabierivier om herbivore uit sekere gebiede uit te sluit en sodoende die herstel van die rivieroewerekosisteme te monitor.

  4. Mouse B-Type Lamins Are Required for Proper Organogenesis But Not by Embryonic Stem Cells

    Science.gov (United States)

    Kim, Youngjo; Sharov, Alexei A.; McDole, Katie; Cheng, Melody; Hao, Haiping; Fan, Chen-Ming; Gaiano, Nicholas; Ko, Minoru S. H.; Zheng, Yixian

    2012-01-01

    B-type lamins, the major components of the nuclear lamina, are believed to be essential for cell proliferation and survival. We found that mouse embryonic stem cells (ESCs) do not need any lamins for self-renewal and pluripotency. Although genome-wide lamin-B binding profiles correlate with reduced gene expression, such binding is not directly required for gene silencing in ESCs or trophectoderm cells. However, B-type lamins are required for proper organogenesis. Defects in spindle orientation in neural progenitor cells and migration of neurons probably cause brain disorganizations found in lamin-B null mice. Thus, our studies not only disprove several prevailing views of lamin-Bs but also establish a foundation for redefining the function of the nuclear lamina in the context of tissue building and homeostasis. PMID:22116031

  5. PROJECTED ROTATIONAL VELOCITIES OF 136 EARLY B-TYPE STARS IN THE OUTER GALACTIC DISK

    Energy Technology Data Exchange (ETDEWEB)

    Garmany, C. D.; Glaspey, J. W. [National Optical Astronomy Observatory, 950 N. Cherry Ave., Tucson, AZ 85719 (United States); Bragança, G. A.; Daflon, S.; Fernandes, M. Borges; Cunha, K. [Observatório Nacional-MCTI, Rua José Cristino, 77. CEP: 20921-400, Rio de Janeiro, RJ (Brazil); Oey, M. S. [University of Michigan, Department of Astronomy, 311 West Hall, 1085 S. University Ave., Ann Arbor, MI: 48109-1107 (United States); Bensby, T., E-mail: garmany@noao.edu [Lund Observatory, Department of Astronomy and Theoretical Physics, Box 43, SE-22100, Lund (Sweden)

    2015-08-15

    We have determined projected rotational velocities, v sin i, from Magellan/MIKE echelle spectra for a sample of 136 early B-type stars having large Galactocentric distances. The target selection was done independently of their possible membership in clusters, associations or field stars. We subsequently examined the literature and assigned each star as Field, Association, or Cluster. Our v sin i results are consistent with a difference in aggregate v sin i with stellar density. We fit bimodal Maxwellian distributions to the Field, Association, and Cluster subsamples representing sharp-lined and broad-lined components. The first two distributions, in particular, for the Field and Association are consistent with strong bimodality in v sin i. Radial velocities are also presented, which are useful for further studies of binarity in B-type stars, and we also identify a sample of possible new double-lined spectroscopic binaries. In addition, we find 18 candidate Be stars showing emission at Hα.

  6. N-terminal-pro-B-type natriuretic peptide during pharmacological heart rate reduction in hyperthyroidism

    DEFF Research Database (Denmark)

    Schultz, M; Kistorp, C; Corell, P

    2009-01-01

    We hypothesized that elevated N-terminal-pro-B-type natriuretic peptide levels in hyperthyroidism are mainly driven by increased metabolism due to excess thyroid hormones. Therefore, serum levels of N-terminal-pro-B-type natriuretic peptide were studied during reduced cardiac work load by means...... of pharmacologically induced heart rate reduction in untreated hyperthyroidism. We designed a noncontrolled interventional study. Eighteen women with newly diagnosed hyperthyroidism were evaluated (including an echocardiography) before and after pharmacological heart rate reduction with 360 mg verapamil daily for 6......-index decreased from median 319 to 315 arbitrary units (p=0.039) and free triiodothyronine-index increased from 8.6 to 9.9 arbitrary units (p=0.010). No changes in echocardiographic parameters were observed. A decrease in resting heart rate in untreated hyperthyroidism due to verapamil treatment did not result...

  7. Moraliteit, die opdringerige en die voorwaardelike

    Directory of Open Access Journals (Sweden)

    M.F. Heyns

    2010-07-01

    Full Text Available Morality, the obtrusive and the conditional The secularist (immanentist, historicist and pluralistic nature of current thinking disables the articulation of transcendental conditions for morality. It is ostensibly especially the constancy of a structure for morality, as transcendental condition, for morality that is disputable. However, an aggressive immanentism sees to it that a transcendent origin for morality does not even appear on the agenda of late modern thinkers, which makes the latter probably an equally serious marginalisation of transcendental considerations. In this article the (sometimes unconscious experience of some philosophers that a constant structure for morality obtrudes itself upon us, is highlighted. A further claim is that a similar obtrusion can be observed about a coherent diversity of moral sources (i.e. sources which find themselves in a transcendental position with regard to each other. The “most daring” argument is for a transcendental transcendent origin for morality.

  8. Die heelal en sy onstaan (II

    Directory of Open Access Journals (Sweden)

    D. J. Van Rooy

    1952-03-01

    Full Text Available Ons kennis en wetenskap van die hemelliggame word volkome bepaal deur die lig wat ons van hulle ontvang, d.w.s. as ons die feite wat die Bybel daaromtrent meedeel, buite rekening laat.

  9. Die gebruik van metode in die filosofie, spesiaal in die reformatoriese tra­disie 1

    Directory of Open Access Journals (Sweden)

    N. T. van der Merwe

    1983-03-01

    Full Text Available Die onderw erp van my voordrag, Die gebruik van metode in die fílosofie, verg ’n paar verduidelikende opinerkings vooraf. Ek dink u verm oed alreeds dat hierdie fomulering ’n versuikerde pil is om u in so ’n mate nuuskierig te maak dat una ’n heerlike vrye filosofiese ‘onderonsie’ gedurende die teepouse darem vir ’n tw eede sessie terugkeer. Want is dit nie twee smaaklike heuningdruppels nie: filosofie en sy metode’ en ‘metode in die Reformatoriese filosofiese tradisie'?! Veral as in gedagte gehou word dat in teenstelling met wat ’n mens sou verw ag, daaroor dié onderwerp as sodanig relatief maar heel weinig geskrywe is en word, selfs as die ‘Inleidings in die Metodologie’ daarby gereken word.

  10. Photometric amplitudes and phases of B-type main sequence pulsators: sources of inaccuracy

    CERN Document Server

    Szewczuk, Wojciech

    2010-01-01

    We discuss all possible sources of uncertainties in theoretical values of the photometric amplitudes and phases of B-type main sequence pulsators. These observables are of particular importance because they contain information about the mode geometry as well as about stellar physics. Here, we study effects of various parameters coming both from theory of linear nonadiabatic oscillations and from models of stellar atmospheres. In particular, we show effects of chemical composition, opacities and, for the first time, effects of the NLTE atmospheres.

  11. Cardiac resynchronization therapy and B-type natriuretic peptide in heart failure

    Institute of Scientific and Technical Information of China (English)

    HUANG De-jia

    2009-01-01

    @@ Cardiac resynchronization therapy (CRT) improves left ventricular function, symptom status, quality of life and reduces hospitalization and mortality in patients with New York Heart Association (NYHA) Class Ⅲ or IV heart failure and intraventricular conduction delay despite optimal medical management.1 B-type natriuretic peptide (BNP) and its amino terminal cleavage equivalent (NT-pro BNP) levels correlate with the severity of heart failure and predict prognosis of heart failure patients.2

  12. B-Type Natriuretic Peptide Modulates Ghrelin, Hunger, and Satiety in Healthy Men

    OpenAIRE

    Vila, Greisa; Grimm, Gabriele; Resl, Michael; Heinisch, Birgit; Einwallner, Elisa; Esterbauer, Harald; Dieplinger, Benjamin; Mueller, Thomas; Luger, Anton; Clodi, Martin

    2012-01-01

    Chronic heart failure is accompanied by anorexia and increased release of B-type natriuretic peptide (BNP) from ventricular cardiomyocytes. The pathophysiological mechanisms linking heart failure and appetite regulation remain unknown. In this study, we investigated the impact of intravenous BNP administration on appetite-regulating hormones and subjective ratings of hunger and satiety in 10 healthy volunteers. Participants received in a randomized, placebo-controlled, crossover, single-blind...

  13. [The role of B type natriuretic peptide in the assessment of post myocardial infarction prognosis].

    Science.gov (United States)

    Ben Halima, A; Ibn el Hadj, Z; Chrigui, R; Kammoun, I; Lefi, A; Chine, S; Gargouri, S; Keskes, H; Kachboura, S

    2006-10-01

    Recently cardiac peptides have received close attention as cardiovascular markers. Brain (B type) natriuretic peptide is a neurohormone synthesized predominantly in ventricular myocardium. Previous studies have shown that this hormone can provide prognostic information in patients with myocardial infarction. The aim of this review is to evaluate the impact of plasma levels of BNP on prediction of left ventricular ejection fraction and remodelling and major cardiac events after myocardial infarction.

  14. Die derivation der slowenischen substantive

    Directory of Open Access Journals (Sweden)

    ]ože Toporišič

    1975-11-01

    Full Text Available Von der traditionellen slowenischen Wortbildungslehre von Substantiven mit den Suffixen (s. g. Derivation wird die betreffende Problematik so dargestellt, dass man - nach Miklošič's Vorbild - von Suffixen mit einem charakteristischen Konsonanten (oder mit eine charakteristischen Konsonantengruppe aus gehend bei verschiedenen Wortartbasen (Zeitwort, Adjektiv, Substantiv die semantischen kategorien von Wortbildungen mit »demselben« Suffix aufzählt. Aber schon bei A. Bajec (Besedotvorje slovenskega jezika, 1950 findet man auch das Kapitel »Die Suffixe nach ihren Bedeutungen, worin Suffixe für 24 Bedeutungsgruppen festgehalten sind. In der Slovenska slovnica (1956 gibt es 16, im Slovenski knjižni jezik 2 (1966 aber 13 solcher Gruppen von Suffixen. Der vorliegende Ausatz geht ebenfalls von den semantischen Kategorien aus, versucht aber die Zahl der Bedeutungskategorien, die aus verhalen, adjekvsehen oder substantiviseher Basen mit Hilfe von Suffixen gebildet werden, auf 6 grosse Gruppen zu reduzieren. Diese 6 Gruppen sind: 1. die Namen der Agenten, des Eigenschaftstragers und der Verbundenheit; 2. die Namen der Werkzeuge, 3. die Namen der Handlung, der Eigenschaft und des Zustandes, 4. die Namen der vergegenständlichten Tat oder Eigenschaft, 5. die Namen der Lokalisierung und 6. Verschiedene. Nur bei den Wortbildungen aus einer substantivischen Basis gibt es noch eine besondere, die s. g. Modifikationsbedeutungsgruppe (Feminativa und Maskulinativa, Kollektiva, Gradativa, Iuvenalia, Diminutiva, Diminutivhipokoristika, Diminutivpeirotiva und Peiorativa. - Dabei wird keine Riick­ sicht darauf genommen, ob diese Suffixe genain slowenisch oder aus anderen Sprachen übernommen sind. Die Berechtigung dafiir gibt uns nicht nur die produktive Wortbildung mit den entlehnten (nichtautochtonen Suffixen im gegenwärtigen Slowenisch, sondern (was noch wichtiger ist auch das richtige Verständnisvermögen der Sprecher für solche Wortbildungen im

  15. The Research and Application of Plastic Extrusion Die Head Flow Structure CAD System%塑料挤出模头流道结构CAD系统研究与应用

    Institute of Scientific and Technical Information of China (English)

    张良; 刘雪红; 唐红涛; 郭顺生; 罗易彬; 李力

    2015-01-01

    塑料异型材流线型挤出模头形状复杂,模腔表面要求平滑过渡,无滞料,流速要求稳定增加,其结构设计和曲面设计难度大,目前主要依赖于设计者的经验和操作者的熟练程度,设计效率低,无法满足越来越高的整体质量要求。针对以上问题,提出了模具内腔结构曲面的三维建模方法,基于UG和VS平台,应用UG/Open二次开发和MFC技术,实现了多封闭环快速识别,草图曲线一键排序,通过人机交互界面进行曲线匹配和曲面构造,从而搭建了从二维草图到三维建模的CAD集成模块,有效地提高了挤出模流道曲面设计效率和质量,并为后续CAE分析和CAM加工提供有力支撑。%Plastic profile streamlined extrusion die head has a complex shape. For the die cavity surface,smooth transition, no lag material,and stability of the flowing velocity are required. It makes the design of structure and surface is difficult and because of depending on the designer’experience and proficiency of the operator,the design efficiency is low and it can’t meet higher and higher requirement of overall quality. To solve the above problems,the curved die design method of the cavity structure is proposed. Based on the UG and VC platform,UG/Open secondary development and MFC technology were used,fast recognition algorithm of a multi-closed loop and one-click sorting of the sketch curve were realized,and through the human-computer interaction to match curves and construct surface,and CAD integration module from 2 D sketch to 3 D modeling was set up,the efficiency of extrusion die flow surface design is effectively improved,and it provides strong support for CAE analysis and CAM processing.

  16. The VLT-FLAMES Tarantula Survey XXII. Multiplicity properties of the B-type stars

    CERN Document Server

    Dunstall, P R; Sana, H; Evans, C J; Howarth, I D; Simón-Díaz, S; de Mink, S E; Langer, N; Apellániz, J Maíz; Taylor, W D

    2015-01-01

    We investigate the multiplicity properties of 408 B-type stars observed in the 30 Doradus region of the Large Magellanic Cloud with multi-epoch spectroscopy from the VLT-FLAMES Tarantula Survey (VFTS). We use a cross-correlation method to estimate relative radial velocities from the helium and metal absorption lines for each of our targets. Objects with significant radial-velocity variations (and with an amplitude larger than 16 km/s) are classified as spectroscopic binaries. We find an observed spectroscopic binary fraction (defined by periods of 0.1) for the B-type stars, f_B(obs) = 0.25 +/- 0.02, which appears constant across the field of view, except for the two older clusters (Hodge 301 and SL 639). These two clusters have significantly lower fractions of 0.08 +/- 0.08 and 0.10 +/- 0.09, respectively. Using synthetic populations and a model of our observed epochs and their potential biases, we constrain the intrinsic multiplicity properties of the dwarf and giant (i.e. relatively unevolved) B-type stars ...

  17. An Einstein Observatory SAO-based catalog of B-type stars

    Science.gov (United States)

    Grillo, F.; Sciortino, S.; Micela, G.; Vaiana, G. S.; Harnden, F. R., Jr.

    1992-01-01

    About 4000 X-ray images obtained with the Einstein Observatory are used to measure the 0.16-4.0 keV emission from 1545 B-type SAO stars falling in the about 10 percent of the sky surveyed with the IPC. Seventy-four detected X-ray sources with B-type stars are identified, and it is estimated that no more than 15 can be misidentified. Upper limits to the X-ray emission of the remaining stars are presented. In addition to summarizing the X-ray measurements and giving other relevant optical data, the present extensive catalog discusses the reduction process and analyzes selection effects associated with both SAO catalog completeness and IPC target selection procedures. It is concluded that X-ray emission, at the level of Lx not less than 10 exp 30 ergs/s, is quite common in B stars of early spectral types (B0-B3), regardless of luminosity class, but that emission, at the same level, becomes less common, or nonexistent, in later B-type stars.

  18. Meganisisme, vitalisme en holisme in die Biologie

    Directory of Open Access Journals (Sweden)

    P.J. Botha

    1963-03-01

    Full Text Available Die Biologie word omskryf as die wetenskap van die lewende wesens (organismes. Die lewe staan dus in die brandpunt van die biologiese studie en ondersoek. Vra ons ons egter af wat onder „lewe” verstaan word, besef ons dadelik dat ons hier met ’n uiters moeilik definieerbare begrip te doen het. In verband met die aard van lewe het daar onder die bioloë en natuurfilosowe veral twee denkrigtings posgevat, nl. meganisisme en vitalism.

  19. Die navorsingsmetode van die fundamentele opvoedkunde*

    Directory of Open Access Journals (Sweden)

    J. L. Van der Walt

    1982-03-01

    Full Text Available Fundamental Pedagogics, as one of the group of sciences constituting Education, has it's own set of research methods, although investigation of and thought about these do not always seem to he firmly grounded. Such investigation reveals that the inductive, verification o f hypothesis method as well as the method of literature study, is a basic method  of this discipline. Apart from these well-known methods there are, however, other methods of research which are useful only for Fundamental Pedagogics. Such methods would include the method of reflection about principles where the process of thinking fulfils itself within the framework of regulative principles; the method of the analysis of phenomena as a subsection of the encompassing method of the empirical study of structure, the transcendental-critical method with its various phases (the immanent. the transcendental, the. transcendent and the ethretical and the problem- historical method. For the Fundamental Pedagogics student all these methods (as far as possible in combination to evade the danger of monism are useful and important, because they do not only enable him to analyse the phenomenon of education, hut also to reflet tellingly on educational events and to describe educational structures, as well as to dele mine which religion is the driving force behind a specific theory of education and practice of education, and which then functions within that framework.

  20. Die mites rondom die val van Troje en Vergilius se uitbeelding daarvan in die tweede boek van die Aeneïs

    Directory of Open Access Journals (Sweden)

    J. Swanepoel

    1981-05-01

    Full Text Available Die mites oor die val van Troje vertel ’n aangrypende verhaal en in die tweede boek van die Aeneïs gee Vergilius op ’n besondere wyse gestalte daaraan. Maar Vergilius se vergestalting daarvan is slegs een van die variante van die verhaal.

  1. Handelinge in die erediens: Die verryking van die liturgie deur musiek

    Directory of Open Access Journals (Sweden)

    Elsabé Kloppers

    2005-10-01

    Full Text Available Actions in the worship service: Enriching liturgy through musicThe worship service in the Reformed Churches in South Africa has of late come under pressure. On the one hand it is experienced as too rigid and “traditional”. On the other hand superficial forms of renewal create tension. In this article the worship service and the meaning of the liturgical actions in the worship service of the Afrikaans Reformed Churches are discussed, and related to world-wide ecumenical tendencies. It is argued that certain liturgical actions are a necessary part of the ritual of the worship service. The structure needs inner logic, although there should also be some degree of flexibility. Hymns and music offer the means for a more creative presentation of liturgical actions and traditional forms. Suggestions to enrich the liturgy through the use of hymns and liturgical forms in the Liedboek van die Kerk (2001 are offered.

  2. Maintaining Low Voiding Solder Die Attach for Power Die While Minimizing Die Tilt

    Energy Technology Data Exchange (ETDEWEB)

    Hamm, Randy; Peterson, Kenneth A.

    2015-10-01

    This paper addresses work to minimize voiding and die tilt in solder attachment of a large power die, measuring 9.0 mm X 6.5 mm X 0.1 mm (0.354” x 0.256” x 0.004”), to a heat spreader. As demands for larger high power die continue, minimizing voiding and die tilt is of interest for improved die functionality, yield, manufacturability, and reliability. High-power die generate considerable heat, which is important to dissipate effectively through control of voiding under high thermal load areas of the die while maintaining a consistent bondline (minimizing die tilt). Voiding was measured using acoustic imaging and die tilt was measured using two different optical measurement systems. 80Au-20Sn solder reflow was achieved using a batch vacuum solder system with optimized fixturing. Minimizing die tilt proved to be the more difficult of the two product requirements to meet. Process development variables included tooling, weight and solder preform thickness.

  3. Lady Di - Die moderne Madonna

    OpenAIRE

    Steuten, Ulrich; Strasser, Hermann

    2009-01-01

    Die authentischen Bekundungen von Trauer und Wertschätzung, die der bei einem Autounfall in Paris ums Leben gekommenen Prinzessin Diana weltweit entgegengebracht und seit Jahren von mehreren Seiten instrumentalisiert werden, sind unübersehbar. Das Leben und Sterben der Prinzessin von Wales ist nach Ansicht der Autoren geeignet, einer populären Mythenbildung in der modernen Gesellschaft Substanz zu verleihen. Vor allem bietet es die Möglichkeit, einen modernen Kult zu etablieren, der sich im Z...

  4. Op die grens van vakwetenskap en filosofie

    Directory of Open Access Journals (Sweden)

    M Elaine Botha

    1976-03-01

    Full Text Available Die begrip “grens” soos dit voorkom in die titel is vir meerdere uitleg vatbaar. Eerstens sou dit kon dui op ’n onoorskreibare punt tussen die filosofie en die vakwetenskappe, so iets soos ’n grenspaal of baken, met ander woorde ’n punt van waterdigte skeiding tussen die domein van die filosofie en die vakwetenskappe. As ’n mens soms die dramatiese grensgevegte tussen die filo­ sofie en die vakwetenskappe in die wetenskaplike literatuur beskou1 dan blyk dit kennelik noodsaaklik te wees om wel sodanige grens te stel, veral ten einde die gevaar van weten­ skaplike terrorisme van die een of die ander kant die hoof te bied.

  5. Neurokognitiewe integrasie en die leerproses

    Directory of Open Access Journals (Sweden)

    Johan J. Du Preez

    2013-02-01

    Full Text Available The purpose of this article, "Neuro-cognitive integration and the learning process'; is to find principles and strategies for the development of brain potential and the optimal integration of subject matter. Eight neuro-cognitive systems are identified and their importance to the integration of subject matter is emphasized. These systems are cortical energy, coding, planning and controlling, as well as the verbal sequential, non-verbal holistic, physical-motor, social effective and the subconscious. The relevant principles and strategies can serve as basis for mainstream and special education, guidance as well as psychotherapy. Die doe! met hierdie artikel is om beginsels en strategiee te vind om breinpotensiaal te ontsluit en leerstof optimaal te integreer. Aan die hand van 'n neurokognitiewe model word 'n aantal beginsels en strategiee bespreek en die verband met die leerproses word aangetoon. Agt neurokognitiewe sisteme is gei'dentifiseer en die belangrike rot wat dit speel ten opsigte van die integrasie van leerstof word beklemtoon. Genoemde sisteme sluit die volgende in: kortikale energie, kodering, beplanning en kontrolering, asook die verbaal-sekwensiele, nieverbaal- holistiese, fisiek-motoriese, sosio-affektiewe en die subbewuste. Genoemde beginsels en strategiee kan oak dien as grondslag vir hoofstroomonderwys, spesialiseringsonderwys, voorligting sowel as psigoterapie.

  6. Die wysgerige konsepsie van Thomas van Aquino

    Directory of Open Access Journals (Sweden)

    Thomas Van Aquino

    1976-03-01

    Full Text Available Samevattend is tot dusver die volgende aangetoon: Die werklikheid vertoon volgens Thomas 'n hierargiese struktuur. Daar is verskillende grade van syn. God is die hoogste, die volheid van syn, en by die laere synsniveaus is daar steeds 'n verdere verwydering van hierdie synsvolmaaktheid in die rigting van absolute afwesigheid van syn. Hierdie synshiërargie is volgens die vorm-materieskema opgebou. Die materie in die hoëre synslaag word vorm vir die laere, of omgekeerd: die vorm van die laere is die materie vir die hoëre dinge. God is absoluut suiwer vorm of wet (essensie. Die vorme van die dinge is die goddelike wet (genoem exemplar, similitudo, ratio, verbum of imago wat deur God daarin geskape is. God druk op dié wyse sy gelykenis op kreatuur.like wyse uit. Sy absolute volmaaktheid kan alleen tot uitdrukking gebring word deur 'n veelheid en verskeidenheid van geskape dinge. God word deur Thomas die causa effiaiens en exemplaris genoem. Die verhouding tussen Skepper en geskape werklikheid is dus dié van oorsaak en gevolg. As gevolg van sy wetsidee word daar deur Thomas dus nie duidelik tussen Skepper en skepping onderskei nie, want skepping beteken volgens hom onder andere dat God iets goddeliks (die wet in die dinge lê. Via die goddelike wet in die dinge ingeskape, is daar 'n sekere kontinuiteit tussen God en kosmos.

  7. New trends in cold-chamber die casting machine design

    Institute of Scientific and Technical Information of China (English)

    R. Dańko; W. Kowalczyk

    2015-01-01

    Larger and larger proportions of aluminium castings, especial y those produced by the die casting process, can be observed during recent years in the automotive industry, house-hold articles and others. In case of the automotive industry, apart from the traditional elements produced by the die pressure method such as engine blocks or crank shaft bedplates, aluminium is displacing steel from structural parts of cars (‘body in white’). The current state and development directions of the structural solutions of cold-chamber die castings are analysed in this paper. These solutions drive the prospective development of these machines and die casting technology. The focus is mainly on essential functional systems such as:hydraulic drives of closing and locking units, as wel as pressing in die machines of known companies present on the European market.

  8. New trends in cold-chamber die casting machine design

    Directory of Open Access Journals (Sweden)

    R. Dańko

    2015-07-01

    Full Text Available Larger and larger proportions of aluminium castings, especially those produced by the die casting process, can be observed during recent years in the automotive industry, house-hold articles and others. In case of the automotive industry, apart from the traditional elements produced by the die pressure method such as engine blocks or crank shaft bedplates, aluminium is displacing steel from structural parts of cars (‘body in white’. The current state and development directions of the structural solutions of cold-chamber die castings are analysed in this paper. These solutions drive the prospective development of these machines and die casting technology. The focus is mainly on essential functional systems such as: hydraulic drives of closing and locking units, as well as pressing in die machines of known companies present on the European market.

  9. Die tydsstruktuur in die gedagtekompleks : Hegel-Kierkegaard-Barth

    NARCIS (Netherlands)

    Engelbrecht, Barend Jacobus

    1949-01-01

    Hierdie studio wil godsdionsfilosofies van aard wees. Dit is daarom saaklik, en ook geed vir 'n duidelike verstaan, om die plek en sin van ons ondorwerp in die gedagtesamehang van 'n godsdiensfilosofie to bepaal. Maar, dit is nie tema en bodoeling om 'n min of moor gekonsentreerde inhoud van ons ond

  10. DIE VERFASSUNG DES BUNDES VON DELOS UND DIE VORHERRSCHAFT ATHENS

    Institute of Scientific and Technical Information of China (English)

    2008-01-01

    Die Grundlagen des Attischen Seebundes wurden zwischen Herbst 478 und Frühjahr 477 v. Chr. gelegt, als zwischen den attischen und ionischen St?dtevereinigungen zum Zwecke der Verteidigung gegen die von den Persern geführten Angriffe ein Bündnisvertrag

  11. Die Presbiter by Lukas en Paulus

    Directory of Open Access Journals (Sweden)

    L. Floor

    1976-06-01

    Full Text Available In die jongste navorsing oor Lukas word die skrywer van die derde evangelieverhaal en die Handelinge van die Apostels aan ons bekend gestel as ’n teoloog wat uit die ‘Sitz im Leben’ (uit die situasie van sy eie tyd die boodskap aangaande Christus interpreteer . Lukas sou hom by sy interpretasie van die Christusboodskap laat lei het deur ’n bepaalde dogmatiese ‘Verstandnis’ waardeur hy homself verraai as ’n teoloog van die na-apostoliese tyd.

  12. Numerical optimization of die geometry in open die forging

    DEFF Research Database (Denmark)

    Christiansen, Peter; Hattel, Jesper Henri; Bay, Niels

    2013-01-01

    This paper deals with numerical optimization of open die forging of large metallic ingots made by casting implying risk of defects, e.g. central pores. Different material hardening properties and die geometries are combined in order to investigate, which geometry gives rise to maximum closure...... of a centreline hole in a single compression operation. Friction is also taken into account. The numerical analysis indicates that a lower die angle of approximately 140o results in the largest centreline hole closure for a wide range of material hardening. The value of optimum die angle is not influenced...... by friction, which was found only to change the degree of centreline porosity closure in case of small lower die angle....

  13. The B-type lamin is required for somatic repression of testis-specific gene clusters

    Science.gov (United States)

    Shevelyov, Y. Y.; Lavrov, S. A.; Mikhaylova, L. M.; Nurminsky, I. D.; Kulathinal, R. J.; Egorova, K. S.; Rozovsky, Y. M.; Nurminsky, D. I.

    2009-01-01

    Large clusters of coexpressed tissue-specific genes are abundant on chromosomes of diverse species. The genes coordinately misexpressed in diverse diseases are also found in similar clusters, suggesting that evolutionarily conserved mechanisms regulate expression of large multigenic regions both in normal development and in its pathological disruptions. Studies on individual loci suggest that silent clusters of coregulated genes are embedded in repressed chromatin domains, often localized to the nuclear periphery. To test this model at the genome-wide scale, we studied transcriptional regulation of large testis-specific gene clusters in somatic tissues of Drosophila. These gene clusters showed a drastic paucity of known expressed transgene insertions, indicating that they indeed are embedded in repressed chromatin. Bioinformatics analysis suggested the major role for the B-type lamin, LamDmo, in repression of large testis-specific gene clusters, showing that in somatic cells as many as three-quarters of these clusters interact with LamDmo. Ablation of LamDmo by using mutants and RNAi led to detachment of testis-specific clusters from nuclear envelope and to their selective transcriptional up-regulation in somatic cells, thus providing the first direct evidence for involvement of the B-type lamin in tissue-specific gene repression. Finally, we found that transcriptional activation of the lamina-bound testis-specific gene cluster in male germ line is coupled with its translocation away from the nuclear envelope. Our studies, which directly link nuclear architecture with coordinated regulation of tissue-specific genes, advance understanding of the mechanisms underlying both normal cell differentiation and developmental disorders caused by lesions in the B-type lamins and interacting proteins. PMID:19218438

  14. Improvement of enantioselectivity of the B-type halohydrin hydrogen-halide-lyase from Corynebacterium sp. N-1074.

    Science.gov (United States)

    Watanabe, Fumiaki; Yu, Fujio; Ohtaki, Akashi; Yamanaka, Yasuaki; Noguchi, Keiichi; Odaka, Masafumi; Yohda, Masafumi

    2016-09-01

    Halohydrin hydrogen-halide-lyase (H-Lyase) is a bacterial enzyme involved in the degradation of halohydrins. This enzyme catalyzes the intramolecular nucleophilic displacement of a halogen by a vicinal hydroxyl group in halohydrins, producing the corresponding epoxides. The H-Lyases have been classified into A, B and C subtypes based on amino acid sequence similarities. These enzymes have attracted much attention as industrial catalysts in the synthesis of chiral chemicals from prochiral halohydrins. In the present study, we constructed mutants of B-type H-Lyase from Corynebacterium sp. N-1074 (HheB) displaying higher enantioselectivity by structure-based site-directed mutagenesis and random mutagenesis. A triple mutant of HheB exhibited 98.5% enantioselectivity, the highest ever reported, toward (R)-4-chloro-3-hydroxy-butyronitrile production, with the yield reaching approximately two-fold that of the wild-type enzyme. We discuss the structural basis of the high enantioselectivity and productivity of the mutant by comparing the crystal structures of the mutant HheB and the wild-type enzyme in complex with or without the substrate analogue.

  15. Die etiek van Karl Barth

    Directory of Open Access Journals (Sweden)

    J. H. van Wyk

    1986-06-01

    Full Text Available Die etiek van Barth kan nie reg verstaan word sonder begrip van sy ganse teologiese agtergrond en opset, en ek wil byvoeg: sonder die besondere tydsomstandighede (oorlog! waarin hy geleef en gewerk het nie. Dit is verder bekend dat in sy teologiese ontwikkeling verskillende figure groot invloed op hom uitgeoefen het.

  16. Die Parlamentswahlen 2008 in Malaysia

    DEFF Research Database (Denmark)

    Reher, Stefanie; Knirsch, Thomas

    2008-01-01

    Nach den Parlamentswahlen vom März 2008 in Malaysia deutet manches auf einen politischen Umbruch hin: Die regierende Barisan Nasional (BN), die sich bislang einer komfortablen Zweidrittelmehrheit von 91,4 Prozent der Sitze im Parlament des Landes erfreut hatte, rutschte auf 63,1 Prozent ab und das...

  17. Complex asteroseismology of the hybrid B-type pulsator $\\gamma$ Pegasi: a test of stellar opacities

    CERN Document Server

    Walczak, Przemysław

    2010-01-01

    Using the updated oscillation spectrum of $\\gamma$ Pegasi, we construct a set of seismic models which reproduce two pulsational frequencies corresponding to the $\\ell=0$, p$_1$ and $\\ell=1$, g$_1$ modes. Then, we single out models which reproduce other well identified modes. Finally, we extend our seismic modelling by a requirement of fitting also values of the complex, nonadiabatic parameter $f$ associated to each mode frequency. Such complex asteroseismology of the B-type pulsators provides a unique test of stellar metallicity and opacities. In contrast to our previous studies, results for $\\gamma$ Peg indicate that both opacity tables, OPAL and OP, are equally preferred.

  18. VizieR Online Data Catalog: Spectrocopic Binarity of O and B type stars (Chini+, 2012)

    Science.gov (United States)

    Chini, R.; Hoffmeister, V. H.; Nasseri, A.; Stahl, O.; Zinnecker, H.

    2013-05-01

    We have performed a comprehensive spectroscopic survey on a large representative sample of 249 O- and 581 B-type stars. Using the high-resolution spectrograph BESO at the Hexapod Telescope at the Universitatssternwarte Bochum near Cerro Armazones in Chile, we obtained 3632 multi-epoch optical spectra. The observing period started in 2009 January and is still going on. The spectra comprise a wavelength range from 3620 to 8530Å and provide a mean spectral resolution of R=50000. (1 data file).

  19. Emission from the Centrifugal Magnetospheres of Magnetic B-type Stars

    Science.gov (United States)

    Shultz, M.; Wade, G.; Rivinius, T.; Townsend, R.; MiMeS Collaboration

    2016-11-01

    Approximately 10% of B-type stars possess strong magnetic fields, and of these, 25% host centrifugal magnetospheres in which the radiative wind, magnetic field, and rotational support interact to form a dense circumstellar plasma visible in a variety of diagnostic lines. In this article we review the basic theory behind CMs, outline current theoretical and observational problems, compare the observational properties of CM host stars to those of classical Be stars, and finally present preliminary results of a population study aimed at clarifying the characteristics of this growing sub-class.

  20. Emission from the Centrifugal Magnetospheres of Magnetic B-type Stars

    CERN Document Server

    Shultz, Matt; Rivinius, Thomas; Townsend, Richard

    2014-01-01

    Approximately 10% of B-type stars possess strong magnetic fields, and of these, 25% host centrifugal magnetospheres (CMs) in which the radiative wind, magnetic field, and rotational support interact to form a dense circumstellar plasma visible in a variety of diagnostic lines. In this article we review the basic theory behind CMs, outline current theoretical and observational problems, compare the observational properties of CM host stars to those of classical Be stars, and finally present preliminary results of a population study aimed at clarifying the characteristics of this growing sub-class.

  1. Montessori-skole: die ander kant

    Directory of Open Access Journals (Sweden)

    Monica Viljoen

    1995-03-01

    Full Text Available Na aanleiding van die artikel “Die invloed van die New Age-beweging op die onderwysagenda van die toekoms” deur Lien van Niekerk en Corinne Meier van die Departement Historiese Opvoedkunde van Unisa (vgl. Koers, 59 (1 1994:69-84 wil ek graag ’n ander sy van Montessori-skole onder die aandag van Koers lesers bring.

  2. Awareness of Dying Preface

    Directory of Open Access Journals (Sweden)

    Barney G. Glaser, PhD, Hon. PhD

    2015-12-01

    Full Text Available Recently The New York Times reported: “VERY ILL CHILDREN TOLD OF DISEASE; Leukemia Patients at N.I.H. Not Shielded From Truth. . . . A child should always be told the truth, even when he has an incurable disease such as leukemia, according to two researchers who interviewed 51 children hospitalized at the National Cancer Institute, Bethesda, Maryland, for treat¬ment of leukemia.” This kind of news item reflects the growing concern among researchers and public about matters which touch on morality as much as on the technical aspects of medi¬cine. The rapidly increasing proportion of elderly people in the American population presents a range of personal and social questions; not the least is how they view their newly won longevity (often including anticipated years of chronic disease as well as their attitudes toward death. In consequence, many geriatric specialists are beginning to study American attitudes toward death, while others, spurred on by what seems a sense-less prolonging of life within hospital walls by medical tech¬nology run wild, are raising questions about death and dying in American life.

  3. Adapt or die?

    Science.gov (United States)

    Visser, S S; Nel, A H

    1996-12-01

    The worldwide economic recession and the concomitant limited stock of finances have had an influence on the available money of every household and have also inhibited the improvement of socio-economic conditions and medicine. The Reconstruction and Development Programme (RDP) has the objective of improving the living conditions of the people with regard to housing, education, training and health care. The latter seems to be a major problem which has to be addressed with the emphasis on the preventive and promotional aspects of health care. A comprehensive health care system did not come into being property in the past because of the maldistribution of health care services, personnel and differences in culture and health care beliefs and values. The question that now arises, is how to render a quality health care service within the constraints of inadequate financing and resources. A comprehensive literature study has been done with reference to quality health care and financing followed by a survey of existing health services and finances. Recommendations are made about minimum requirements to be accepted if one were to adapt rather than die in terms of the provision of healthcare: the decentralization and rationalization of the administration of health care, the stress on and realization of effective and efficient primary health care, the acceptance of participative management in health providing organizations, the provision of financial management training for health care managers and the application of management accounting principles for the improvement of the efficiency and effectiveness of management.

  4. Leierskapstyl en die lerende organisasie

    Directory of Open Access Journals (Sweden)

    W. G. Victor

    2002-09-01

    Full Text Available Leadership style and the learning organisation. In the present highly competitive environment, it has become increasingly important for organisational leaders to establish a learning organisation. In this study the focus was on the extent of influence that the evolution of organisations, as determined by their relative level of leadership practises (leadership style, has on the establishment of a learning organisation. Opsomming Die daarstel van ’n lerende organisasie deur bedryfsleiers word toenemend belangrik in die hedendaagse hoogskompeterende omgewing. In hierdie studie is gefokus op die mate van beinvloeding wat die evolusie van organisasies, soos deur hul relatiewe vlak van demokratiese leierskapspraktyke (leierskapstyl bepaal, op die daarstelling van’n lerende organisasie het.

  5. Identification of a major QTL controlling the content of B-type starch granules in Aegilops

    Science.gov (United States)

    Howard, Thomas; Rejab, Nur Ardiyana; Griffiths, Simon; Leigh, Fiona; Leverington-Waite, Michelle; Simmonds, James; Uauy, Cristobal; Trafford, Kay

    2011-01-01

    Starch within the endosperm of most species of the Triticeae has a unique bimodal granule morphology comprising large lenticular A-type granules and smaller near-spherical B-type granules. However, a few wild wheat species (Aegilops) are known to lack B-granules. Ae. peregrina and a synthetic tetraploid Aegilops with the same genome composition (SU) were found to differ in B-granule number. The synthetic tetraploid had normal A- and B-type starch granules whilst Ae. peregrina had only A-granules because the B-granules failed to initiate. A population segregating for B-granule number was generated by crossing these two accessions and was used to study the genetic basis of B-granule initiation. A combination of Bulked Segregant Analysis and QTL mapping identified a major QTL located on the short arm of chromosome 4S that accounted for 44.4% of the phenotypic variation. The lack of B-granules in polyploid Aegilops with diverse genomes suggests that the B-granule locus has been lost several times independently during the evolution of the Triticeae. It is proposed that the B-granule locus is susceptible to silencing during polyploidization and a model is presented to explain the observed data based on the assumption that the initiation of B-granules is controlled by a single major locus per haploid genome. PMID:21227932

  6. The chemical abundance analysis of normal early A- and late B-type stars

    CERN Document Server

    Fossati, L; Bagnulo, S; Alecian, E; Grunhut, J; Kochukhov, O; Wade, G

    2009-01-01

    Modern spectroscopy of early-type stars often aims at studying complex physical phenomena. Comparatively less attention is paid to identifying and studying the "normal" A- and B-type stars and testing how the basic atomic parameters and standard spectral analysis allow one to fit the observations. We wish to stablish whether the chemical composition of the solar photosphere can be regarded as a reference for early A- and late B-type stars. We have obtained optical high-resolution, high signal-to-noise ratio spectra of three slowly rotating early-type stars (HD 145788, 21 Peg and pi Cet) that show no obvious sign of chemical peculiarity, and performed a very accurate LTE abundance analysis of up to 38 ions of 26 elements (for 21 Peg), using a vast amount of spectral lines visible in the spectral region covered by our spectra. We provide an exhaustive description of the abundance characteristics of the three analysed stars with a critical review of the line parameters used to derive the abundances. We compiled ...

  7. Comparison of physicochemical properties of B-type nontraditional starches from different sources.

    Science.gov (United States)

    Huang, Jun; Zhao, Lingxiao; Man, Jianmin; Wang, Juan; Zhou, Weidong; Huai, Huyin; Wei, Cunxu

    2015-01-01

    Starches were isolated from rhizomes of Curcuma longa, Canna edulis and Canna indica and bulbs of Lilium lancifolium, and showed a B-type X-ray diffraction pattern. Their physicochemical properties were investigated and compared. These starches showed significantly different granule morphologies and sizes, but all had eccentric hila. The C. longa starch had the lowest content of amylopectin short branch-chain and branching degree and the highest content of amylopectin long branch-chain, and the L. lancifolium starch the highest content of amylopectin short branch-chain and branching degree and the lowest content of amylopectin long branch-chain among the four starches. The L. lancifolium starch had the lowest resistance to gelatinization, and showed the lowest pasting peak, hot and final viscosities, and the C. longa starch had the highest resistance to gelatinization, and showed the highest pasting hot, final and setback viscosities and the lowest pasting breakdown viscosity. The C. longa and L. lancifolium starches possessed very high and low resistance to hydrolysis and digestion, respectively. The above physicochemical properties would be useful for the applications of B-type starches in food and nonfood industries.

  8. Adapt or Die

    DEFF Research Database (Denmark)

    Brody, Joshua Eric; Larsen, Kasper Green

    2015-01-01

    read cells. We study such non-adaptive data structures in the cell probe model. This model is one of the least restrictive lower bound models and in particular, cell probe lower bounds apply to data structures developed in the popular word-RAM model. Unfortunately, this generality comes at a high cost...... several different notions of non-adaptivity and identify key properties that must be dealt with if we are to prove polynomial lower bounds without restrictions on the data structures. Finally, our results also unveil an interesting connection between data structures and depth-2 circuits. This allows us...... to translate conjectured hard data structure problems into good candidates for high circuit lower bounds; in particular, in the area of linear circuits for linear operators. Building on lower bound proofs for data structures in slightly more restrictive models, we also present a number of properties of linear...

  9. Ueber die Neoperla-Arten aus Java

    NARCIS (Netherlands)

    Klapálek, Fr.

    1910-01-01

    Die Anregung zum Versuche die bisher aus Java bekannten Neoperla-Arten zusammenzustellen, gab mir die Sendung des Herrn E. Jacobson aus Semarang. Sie enthielt zwei Arten, von welchen die eine für mich neu war; ich nehme mir die Freiheit dieselbe ihrem Entdecker zu widmen. Bei dieser Gelegenheit habe

  10. Die wêreld en ons

    Directory of Open Access Journals (Sweden)

    D. W. Kruger

    1950-03-01

    Full Text Available Gedurende die jaar 1949 het Sowjet-Rusland twee groot suksesse behaal, n.l. die oorwinning van die Komniunisnie in China en die vervaardiging van die atoombom, albei gebeurtenisse wat vir sy westerse teenstanders ’n groot ontngtering was.

  11. Die Dankesrede bei der Preisverleihung

    Directory of Open Access Journals (Sweden)

    Elenmari Pletikos Olof

    2012-12-01

    Full Text Available Festliche Preisverleihungen sind Gelegenheiten, bei denen von den Preisträgerneine kurze Rede erwartet wird. Obwohl die Dankesrede eine kleinere Randgattung innerhalb des epideiktischen Genres ist, steht sie im Mittelpunkt des Ereignisses. Rhetorikhandbücher geben zahlreiche Ratschläge, wie eine gute Festrede vorbereitet werden soll, um zu unterhalten, zu bewegen und zu belehren. Ziel dieser Untersuchung ist es festzustellen, welche Eigenschaften der Dankesrede die Zuhörer als erwünscht oder unerwünscht wahrnehmen und welche Charakteristika am meisten zur Qualität festlicher Dankesreden beitragen. Das Korpus der gesprochenen Texte bilden 30 Dankesreden anlässlich kroatischer Preisverleihungen in den Bereichen Schauspiel, Sport, Musik, Fernsehen, Literatur und Wirtschaft. Die Audio-Aufnahmen der Dankesreden wurden einer Gruppe von Hörern zur Bewertung in folgenden Kategorien vorgelegt: interessant, geistreich, hoher Sprachstil, feierlich, emotiv, persönlich, originell, bescheiden, vorbereitet und spontan. Zusätzlich wurde zu jeder Rede die offene Frage gestellt, was dem Zuhörer an der Rede gefallen oder nicht gefallen habe. Die Resultate der Perzeptionsanalye lassen erkennen, dass die Interessantheit einer Rede mit der Eigenschaft des Geistreichen, des Originellen, des Emotionalen und des Persönlichen in Verbindung gebracht wird und die Eigenschaft des Festlichen im Wesentlichen nur mit dem hohen Sprachstil und der Vorbereitetheit des Textes korreliert. Einige Eigenschaften können sowohl erwünscht als auch unerwünscht sein, z. B. Dialekt, Persönliches und Kürze. Die besten Dankesreden haben Eigenschaften, die im Grunde schwer miteinander zu verbinden sind: Einerseits soll der Text vorbereitet sein (hoher Stil, Wortwahl, Figuren, Originalität der Geschichte, Humor, andererseits wird bei der Ausführung Spontaneität (Aufrichtigkeit, Emotionalität, Persönlichkeit erwartet.

  12. Die plek van goud in die huidige internasionale monetêre stelsel en die rol wat dit kan speel in die herstel van die internasionale monetêre orde.

    Directory of Open Access Journals (Sweden)

    D. P. Erasmus

    1964-03-01

    Full Text Available Die vrye wêreld het sedert die oorloggedwonge opskorting van die goudstandaard in 1914, ’n groot agteruitgang in die internasionale betalingsmeganisme beleef. Hoewel die inter- nasionale goudstandaard in die laaste helfte van die twintiger- jare herstel is, was meeste lande nie langer gedwee om hulle aan die monetêre dissipline van dié stelsel te onderwerp nie en vind ons dat die een land na die ander onder die druk van die depressie in die dertigerjare die goudstandaard laat vaar het. Die Verenigde State van Amerika was die enigste uitson- dering. Geleidelik moes wisselkoersstabiliteit en die vrye inter­ nasionale betalingsverkeer vir wisselkoersmanipulasie en valu- tabeheer plek maak. Hierdie transformasie was ’n weerspieë- ling van die sterker opkoms van ekonomiese nasionalisme en die begeerte van die onderskeie lande om elkeen vir homself die beste voordeel in die internasionale ekonomiese en finan- siële terrein toe te eien. Die daarstelling van die Internasionale Monetêre Fonds te Bretton Woods in 1944, was ’n simptoom van die wêreldwye kommer oor die vooroorlogse neigings op monetêre gebied en terselfdertyd ’n poging om meer dissi­ pline in die internasionale betalingsverkeer te skep. Feit is egter dat ondanks sy positiewe resultate op sommige gebiede, die Internasionale Monetêre Fonds nie heeltemal 'n geskikte substituut vir die goudstandaard daargestel het nie. Wat meer is, die skok van die internasionale monetêre steurnisse word nog steeds deur die lande met die internasionale geldeenhede, naamlik die pond sterling en die dollar ondervind.

  13. Afrika die Onbekende: Die Federasie van Rhodesie Njassaland (I

    Directory of Open Access Journals (Sweden)

    J. S. van der Merwe

    1960-03-01

    Full Text Available Die grondgebied van die Federasie van Rhodesië en Njassaland strek oor 14° 15’ in ’n N.-S.-rigting (vanaf22“ 30’ S. to t 8° 15’ S. en ongeveervanaf 22° 0 to t 36° 0. Dit verteenwoordig afstande in albei gevalle van tussen 900 en 1000 myl.

  14. The composition and structure of macro and microcrystalline paraffin waxes. Part 2. Results of analysis; Ueber die Zusammensetzung von makro- und mikrokristallinen Paraffinen. Teil 2. Untersuchungsergebnisse

    Energy Technology Data Exchange (ETDEWEB)

    Matthaei, M.; Butz, T. [Sasol Wax GmbH, Hamburg (Germany); Geissler, A. [Hochschule Zittau/Goerlitz (Germany)

    2004-02-01

    The composition and structure of the non-n-alkane fraction of macrocrystalline and microcrystalline paraffin waxes are described inconsistently and with contradictions in the current literature. Therefore, the aim of this work was to evaluate the substance of previous analytical techniques, in order to further develop and improve these methods and to state more precisely and thus broaden the knowledge of the structure of petroleum paraffin waxes. IR structure group analysis only resulted in relatively imprecise information. GC-MS enabled the identification and semi quantitative determination of various cycloalkanes. By adopting and further developing a polymer analysis {sup 13}C-NMR structure group analysis method it was possible to identify and to determine the semiquantification of 20 different structure groups. From the results we concluded that the non-n-alkane fraction of paraffin waxes mainly consists of isoalkanes. The side-chains of the isoalkanes are mainly located at the {gamma} position and consist to 60-80% of methyl groups, 5-20% of ethyl groups and 15-20% of longer alkyl groups. An average macrocrystalline paraffin molecule has about 0.14 side chains, an average microcrystalline paraffin molecule up to 0.67 side chains. Regarding the naphthenic structure class, only mono- and dialkyl substitued cyclohexanes were found with alkyl chain lengths of up to C{sub 26} in macrocrystalline paraffin and up to C{sub 34} in microcrystalline paraffin. The number of cyclohexyl groups in the average molecule increases with the graduation of the paraffin wax and reaches up to 0.22 maximum in microcrystalline wax. (orig.)

  15. Decorative pleats; Falten, die schmuecken

    Energy Technology Data Exchange (ETDEWEB)

    Marfurt, P. [Sulzer Rueti AG, Rueti (Switzerland)

    1998-06-01

    Pleated fabrics - also known as plisses - are very popular in the fashion industry. The pleats are normally created in a process which involves pressing and heat-setting. The Sulzer Ruti G6200 rapier weaving machine is now available with special equipment, which allows the pleats to be woven directly into the fabric. (orig.) [Deutsch] Im modischen Bereich sind Faltengewebe - sogenannte Plissees - sehr beliebt. Ueblicherweise entstehen die Falten in einem Press- und Thermofixiervorgang. Die Greiferwebmaschine G6200 von Sulzer Rueti ist jetzt mit einer speziellen Ausruestung lieferbar, mit deren Hilfe die Falten direkt in den Stoff gewebt werden koennen. (orig.)

  16. Quantenfische die Stringtheorie und die Suche nach Weltformel

    CERN Document Server

    Lüst, Dieter

    2011-01-01

    Lässt sich das Verhalten aller Dinge, von den kleinsten Teilchen bis zum Universum, einheitlich beschreiben? Der heißeste Kandidat für die Entwicklung einer Weltformel, die alle physikalischen Phänomene erklären kann, ist die Stringtheorie. Sollte sie sich als richtig erweisen, so würde das unser Verständnis über den Ursprung der Naturgesetze dramatisch verändern. Denn das von uns beobachtete Universum wäre dann vermutlich eine winzige Blase in einem viel größeren Gebilde, dem Multiversum. Um die Stringtheorie und die Idee des Multiversums plausibel zu machen, greift der international bekannte theoretische Physiker Dieter Lüst auf ein Modell zurück: das Leben von Fischen in einem Teich. Eines Tages gelingt es den Fischen, die kleinsten Teilchen zu identifizieren, aus denen alles im Fischteich besteht - eingeschlossen sie selbst. Sie nennen diese Urbausteine Quantenfische, da ihr Verhalten nahelegt, dass sie auch eine Art von Lebewesen sind. Doch der ersten folgt eine weitere Entdeckung der Fisch...

  17. Verlossing en die verbeelding van die kinderjare: Dickens se voorstelling van kinders in A Christmas Carol

    Directory of Open Access Journals (Sweden)

    David E. Robinson

    2016-03-01

    Full Text Available Hierdie artikel oorweeg die uitbeelding van kinders in Dickens se bekendste Kersboek. Sentraal in hierdie staan die oorweging van die historiese omstandighede waarin hierdie boek geskryf is, asook Dickens se eie kinderjare en die moontlikheid van verlossing, deur die mag van die verbeelding, uit die negatiewe gevolge van sosiale omstandighede en persoonlike keuses. Die veranderende opvatting van die Victoriaanse kind, van die idee dat kinders van nature sondig is tot die idee dat hulle suiwer en onskuldig is, plaas hierdie literêre werk histories en teoreties. Die rol van Dickens se herinneringe aan sy kinderdae en die invloed daarvan op sy werk word bespreek. Die werk van Edmund Wilson en die kenner van kinderliteratuur, Adrienne Gavin, word ingesluit in hierdie oorweging van die kort roman.

  18. Gedagtes oor die onbepaaldheidsbeginsel van Heisenberg

    Directory of Open Access Journals (Sweden)

    P. H. Stoker

    1955-03-01

    Full Text Available Van filosofiesc syde en ook deur populariserende skrywers is daar al baie geskryf oor die onbepaaldheidsbeginsel in die Fisika, wat deur Heisenberg in die twintiger jare na vore gebring is.

  19. Die Facharztweiterbildung in Großbritannien oder die "Modernisierung der ärztlichen Karrieren" [Modernising Medical Careers

    Directory of Open Access Journals (Sweden)

    du Moulin, Marcel

    2007-05-01

    Full Text Available [english] This paper analyses the reform of postgraduate medical education introduced in the United Kingdom in 2003 under the heading "Modernising Medical Careers“. This nationally standardised and structured postgraduate medical training was started in 2005. The analysis includes the transition from undergraduate to postgraduate education, the new responsibilities in postgraduate education, the application process and the mode of distribution of the positions and the relationship of posts with and without postgraduate training opportunities. Possible consequences for postgraduate training and for the trainees are discussed. [german] Die Arbeit beschreibt und analysiert die Reform der Facharztweiterbildung in Großbritannien, die 2003 unter dem Titel "Modernising Medical Careers“ eingeführt wurde und seit 2005 umgesetzt wird. Vorgestellt werden der Übergang von der Ausbildung zur Weiterbildung, die neuen Zuständigkeiten für die Weiterbildung, das Auswahlverfahren und der Verteilungsmodus der Weiterbildungsstellen sowie das Verhältnis von Stellen mit und ohne Facharztperspektive. Die potenziellen Folgen für die Facharztweiterbildung und für die Weitergebildeten werden diskutiert.

  20. Die Last mit der Lust

    Directory of Open Access Journals (Sweden)

    Lutz Sauerteig

    2004-03-01

    Full Text Available Robert Jütte legt mit Lust ohne Last eine umfassende, allgemeinverständliche und spannend zu lesende Geschichte der Empfängnisverhütung von der Antike bis in die unmittelbare Gegenwart vor.

  1. Nuwe patogene in die voedselbedryf

    Directory of Open Access Journals (Sweden)

    M. M. Ehlers

    1996-07-01

    Full Text Available ’n “Nuwe generasie” voedselpatogene het die afgelope jare hul verskyning gemaak en kan 'n ernstige gevaar vir die voedselbedryf inhou. Hierdie organismes is uiters aanpasbaar en bestaande voedselprosesseringstegnieke, veral die verkoeling van voedsel, is nie altyd volkome effektief om hul groei te voorkom nie. Clostridium botulinum tipe E, enterotoksigeniese Eschsrichia coli. Listeria monocytogenes en Aeromonas hydrophila is in staat om in voedsel by 5 °C te groei. Campylobacter jejuni en Brucella kan weer by 5 °C oorleef en 'n derde groep organismes, naamlik Salmonella, Staphylococcus aureus, Vibrio parahaemolyticus en Vibrio vulnificus kan by temperature tussen 5 °C en 12 °C groei en hul teenwoordigheid is ’n aanduiding dat die koueketting verbreek is.

  2. Differential models for B-type open-closed topological Landau-Ginzburg theories

    CERN Document Server

    Babalic, Mirela; Lazaroiu, Calin Iuliu; Tavakol, Mehdi

    2016-01-01

    We propose a family of differential models for B-type open-closed topological Landau-Ginzburg theories defined by a pair $(X,W)$, where $X$ is any non-compact Calabi-Yau manifold and $W$ is any holomorphic complex-valued function defined on $X$ whose critical set is compact. The models are constructed at cochain level using smooth data, including the twisted Dolbeault algebra of polyvector valued forms and a twisted Dolbeault category of holomorphic factorizations of $W$. We give explicit proposals for cochain level versions of the bulk and boundary traces and for the bulk-boundary and boundary-bulk maps of the Landau-Ginzburg theory. We prove that most of the axioms of an open-closed topological field theory are satisfied on cohomology and conjecture that the remaining axioms are also satisfied.

  3. Bilinear identities for an extended B-type Kadomtsev-Petviashvili hierarchy

    CERN Document Server

    Lin, Runliang; Liu, Xiaojun; Zeng, Yunbo

    2016-01-01

    In this paper, we construct the bilinear identities for the wave functions of an extended B-type Kadomtsev-Petviashvili (BKP) hierarchy, which contains two types of (2+1)-dimensional Sawada-Kotera equation with a self-consistent source (2d-SKwS-I and 2d-SKwS-II). By introducing an auxiliary variable corresponding to the extended flow for the BKP hierarchy, we find the tau-function and the bilinear identities for this extended BKP hierarchy. The bilinear identities can generate all the Hirota's bilinear equations for the zero-curvature forms of this extended BKP hierarchy. As examples, the Hirota's bilinear equations for the two types of 2d-SKwS (both 2d-SKwS-I and 2d-SKwS-II) will be given explicitly.

  4. Die gesetzliche Frauenquote in Deutschland

    OpenAIRE

    Amling, Svenja

    2011-01-01

    In der vorliegenden Arbeit wird auf eine per Gesetz vorgeschriebene Frauenquote in Deutschland eingegangen. Im Fokus steht die Frage, ob Frauendiskriminierung durch eine solche Vorschrift tatsächlich bekämpft werden kann oder ob vielmehr die Männer diskriminiert würden. Zudem werden mögliche Unterschiede in den Führungsstilen zwischen Frauen und Männern untersucht sowie einige bereits vorhandene Frauenquoten in Politik und Wirtschaft vorgestellt.

  5. Dies irae ~Acta est Fabula~

    Institute of Scientific and Technical Information of China (English)

    2010-01-01

    从2007年11月的Diesirae Also sprach Zarathstra到2009年的7月的Dies irae Also sprach Zarathustra—die Wieder kunfl-,Light社的Diesirae的完全版可说是时隔两年的大坑,发行了两个非完全版的游戏吊足玩家们的胃口后。

  6. Kantaantekeninge by die formele en materiële beginsels van die Suid-Afrikaanse kerkgeskiedskrywing

    Directory of Open Access Journals (Sweden)

    E. Brown

    1977-06-01

    Full Text Available Die totstandkoming van ons Kerkhistoriese Werkgemeenskap staan sekerlik in die teken van ’n ‘geschichtliche Bevifusstsein’ met betrekking tot die kerkgeskiedenis in ons land. In die geskiedenis van die ecclesia patria val dit nie sonder rede met die toenemende pleitredes vir ’n krities (teologiese beoefening van hierdie vakgebied saam nie.

  7. Die Energiesicherheit Europas in Bezug auf Erdgas und die Auswirkungen einer Kartellbildung im Gassektor

    OpenAIRE

    Krämer, Luis-Martín

    2011-01-01

    Die Dissertation untersucht die aktuelle Sicherheit der europaeischen Erdgasversorgung. Sie beruecksichtigt zudem die moeglichen Auswirkungen einer Kartellbildung auf die europaeische Gasversorgungssicherheit. Die Arbeit besteht aus einer detaillierten empirischen Studie und darauf aufbauender Szenarioanalyse. Hierzu wird auf den Interdependenzansatz von Robert O. Keohane und Joseph Nye zurueckgegriffen. Zur Darstellung des komplexen Themenbereichs wird auf die Darstellungspraxis der Dichten ...

  8. Two new SB2 binaries with main sequence B-type pulsators in the Kepler field

    Science.gov (United States)

    Papics, P. I.

    2013-06-01

    OB stars are important in the chemistry and evolution of the Universe, but the sample of targets well understood from an asteroseismological point of view is still too limited to provide feedback on the current evolutionary models. Our study extends this sample with two spectroscopic binary systems. Aims. Our goal is to provide orbital solutions, fundamental parameters and abundances from disentangled high-resolution high signal-to-noise spectra, as well as to analyse and interpret the variations in the Kepler light curve of these carefully selected targets. This way we continue our efforts to map the instability strips of β Cep and slowly pulsating B stars using the combination of high-resolution ground-based spectroscopy and uninterrupted space-based photometry. Methods. We fit Keplerian orbits to radial velocities measured from selected absorption lines of high-resolution spectroscopy using synthetic composite spectra to obtain orbital solutions. We use revised masks to obtain optimal light curves from the original pixel-data from the Kepler satellite, which provided better long term stability compared to the pipeline processed light curves. We use various time-series analysis tools to explore and describe the nature of variations present in the light curve. Results. We find two eccentric double-lined spectroscopic binary systems containing a total of three main sequence B-type stars (and one F-type component) of which at least one in each system exhibits light variations. The light curve analysis (combined with spectroscopy) of the system of two B stars points towards the presence of tidally excited g modes in the primary component. We interpret the variations seen in the second system as classical g mode pulsations driven by the κ mechanism in the B type primary, and explain the unexpected power in the p mode region as a result of nonlinear resonant mode excitation.

  9. CIRCUMBINARY PLANETS ORBITING THE RAPIDLY PULSATING SUBDWARF B-TYPE BINARY NY Vir

    Energy Technology Data Exchange (ETDEWEB)

    Qian, S.-B.; Zhu, L.-Y.; Dai, Z.-B.; He, J.-J. [National Astronomical Observatories/Yunnan Observatory, Chinese Academy of Sciences (CAS), P.O. Box 110, 650011 Kunming (China); Fernandez-Lajus, E. [Facultad de Ciencias Astronomicas y Geofisicas, Universidad Nacional de La Plata, 1900 La Plata, Buenos Aires (Argentina); Xiang, F.-Y., E-mail: qsb@ynao.ac.cn [Physics Department, Xiangtan University, 411105 Xiangtan, Funan Province (China)

    2012-02-15

    We report here the tentative discovery of a Jovian planet in orbit around the rapidly pulsating subdwarf B-type (sdB-type) eclipsing binary NY Vir. By using newly determined eclipse times together with those collected from the literature, we detect that the observed-calculated (O - C) curve of NY Vir shows a small-amplitude cyclic variation with a period of 7.9 yr and a semiamplitude of 6.1 s, while it undergoes a downward parabolic change (revealing a period decrease at a rate of P-dot = -9.2 x 10{sup -12}). The periodic variation was analyzed for the light-travel-time effect via the presence of a third body. The mass of the tertiary companion was determined to be M{sub 3}sin i' = 2.3({+-} 0.3)M{sub Jupiter} when a total mass of 0.60 M{sub Sun} for NY Vir is adopted. This suggests that it is most probably a giant circumbinary planet orbiting NY Vir at a distance of about 3.3 astronomical units (AU). Since the rate of period decrease cannot be explained by true angular momentum loss caused by gravitational radiation or/and magnetic braking, the observed downward parabolic change in the O - C diagram may be only a part of a long-period (longer than 15 years) cyclic variation, which may reveal the presence of another Jovian planet ({approx}2.5 M{sub Jupiter}) in the system.

  10. Dying at the best time.

    Science.gov (United States)

    Seale, C; Addington-Hall, J

    1995-03-01

    These are the results of two surveys of relatives, and others who knew people who had died, describing events in the year before death and their views on the time of the person's death. Those surveyed were identified from death certificates in England. The main focus is on a sample of 3696 people dying in 1990 in 20 health authorities, with supporting analysis from an earlier national sample of 639 people dying in 1987. Variation in peoples' views about whether an earlier death would have been better is reported, in the context of debate about euthanasia. Spouses were less likely than others to feel that it would have been better if the person had died earlier, and this held true even when controlling for the deceaseds' levels of pain, distress, dependency and age. Spouses were more likely than others to say that a later death would have been better, though not in cases where the deceased was reported as having said they wanted to die sooner. Spouses were influenced by the loss which the death of the person represented for them, being more likely than others to say they missed the person who died a great deal, and feel loneliness was a big problem. Non spouses (children and other relatives of the deceased, friends, neighbours and a few officials) on the other hand were more likely than spouses to say an earlier death would have been better, even when levels of pain, distress, dependency and age were controlled for.(ABSTRACT TRUNCATED AT 250 WORDS)

  11. Die filosofie van Smuts en Boodin.

    Directory of Open Access Journals (Sweden)

    J. M. de Wet

    1936-03-01

    Full Text Available Die werk van generaal Smuts, baie goed bekend omder die titel ,,Holism and Evolution” , en sy artikel oor ,,Some recent scientificadvances in their bearing on philosophy” in ,,Our Changing worldview”, as ook die werke van J. E. Boodin, professor in die wysbegeerteaan die Universiteit van California, Los Angeles, ,,Cosmic Evolution 1925, ,,Three interpretations of the Universe” 1934 en ,,God” 1934, toon die besondere en kenmerkende gedagtegamg vandie filosofie van die laaste tiental jare aan. Die kenmerkende is dit dat dit ’in filosofie is van sintese of, soos Whitehead

  12. EXTRUSION DIE CAE OF THE STEEL REINFORCED PLASTIC PIPE

    Institute of Scientific and Technical Information of China (English)

    W.Q. Ma; H.Y. Sun; D.C. Kang; K.D. Zhao

    2004-01-01

    The steel reinforced plastic pipe is a new kind of pressure pipe. It is made up with steel wires and plastic. Because reinforced skeleton of the steel wire increase the complexity of plastic flow during the extrusion phase, the traditional design criteria of extrusion die is not suitable. The study on extrusion die of the kind of pipe is very important step in produce development. Using finite element (FE) method in this paper, the flow rule of molten plastic inside the die has been predicted and a group of optimal structural parameters was obtained. These results are helpful for reducing the design cycle and improve the quality of the final product.

  13. Multiplex detection of B-type natriuretic peptide, cardiac troponin I and C-reactive protein with photonic suspension array.

    Directory of Open Access Journals (Sweden)

    Wenbin Lu

    Full Text Available A novel photonic suspension array has been developed for multiplex immunoassay. The carriers of this array were silica colloidal crystal beads (SCCBs. The codes of these carriers have characteristic reflection peaks originating from their structural periodicity; therefore they do not suffer from fading, bleaching, quenching or chemical instability. In addition, the fluorescence background of SCCBs is negligible because no fluorescence materials or dyes are involved. With a sandwich method, the proposed suspension array was used for simultaneous multiplex detection of heart failure (HF and coronary heart disease (CAD biomarkers in one test tube. The results showed that the three biomarkers: cardiac troponin I (cTnI, C-reactive protein (CRP and B-type natriuretic peptide (BNP could be assayed in the ranges of 0.1-500 ng/ml, 1-500 mg/L and 0.02-50 ng/ml with detection limits of 0.01 ng/ml, 0.36 mg/L and 0.004 ng/ml at 3σ, respectively. There were no significant differences between the photonic suspension array and traditional parallel single-analyte test. This novel method demonstrated acceptable accuracy, high detection sensitivity and reproducibility and excellent storage stability. This technique provides a new strategy for low cost, automated, and simultaneous multiplex immunoassays of bio-markers.

  14. The elusive third subunit IIa of the bacterial B-type oxidases: the enzyme from the hyperthermophile Aquifex aeolicus.

    Directory of Open Access Journals (Sweden)

    Laurence Prunetti

    Full Text Available The reduction of molecular oxygen to water is catalyzed by complicated membrane-bound metallo-enzymes containing variable numbers of subunits, called cytochrome c oxidases or quinol oxidases. We previously described the cytochrome c oxidase II from the hyperthermophilic bacterium Aquifex aeolicus as a ba(3-type two-subunit (subunits I and II enzyme and showed that it is included in a supercomplex involved in the sulfide-oxygen respiration pathway. It belongs to the B-family of the heme-copper oxidases, enzymes that are far less studied than the ones from family A. Here, we describe the presence in this enzyme of an additional transmembrane helix "subunit IIa", which is composed of 41 amino acid residues with a measured molecular mass of 5105 Da. Moreover, we show that subunit II, as expected, is in fact longer than the originally annotated protein (from the genome and contains a transmembrane domain. Using Aquifex aeolicus genomic sequence analyses, N-terminal sequencing, peptide mass fingerprinting and mass spectrometry analysis on entire subunits, we conclude that the B-type enzyme from this bacterium is a three-subunit complex. It is composed of subunit I (encoded by coxA(2 of 59000 Da, subunit II (encoded by coxB(2 of 16700 Da and subunit IIa which contain 12, 1 and 1 transmembrane helices respectively. A structural model indicates that the structural organization of the complex strongly resembles that of the ba(3 cytochrome c oxidase from the bacterium Thermus thermophilus, the IIa helical subunit being structurally the lacking N-terminal transmembrane helix of subunit II present in the A-type oxidases. Analysis of the genomic context of genes encoding oxidases indicates that this third subunit is present in many of the bacterial oxidases from B-family, enzymes that have been described as two-subunit complexes.

  15. PI-RADS classification. Structured reporting for MRI of the prostate; PI-RADS-Klassifikation. Strukturiertes Befundungsschema fuer die MRT der Prostata

    Energy Technology Data Exchange (ETDEWEB)

    Roethke, Matthias; Schlemmer, H.P. [Deutsches Krebsforschungszentrum (DKFZ), Heidelberg (Germany). Abt. fuer Radiologie; Blondin, D. [Universitaetsklinikum Duesseldorf (Germany). Inst. fuer Diagnostische und Interventionelle Radiologie; Franiel, T. [Charite - Universitaetsmedizin Berlin, Campus Mitte (Germany). Inst. fuer Radiologie

    2013-03-15

    Purpose: To flesh out the ESUR guidelines for the standardized interpretation of multiparametric magnetic resonance imaging (mMRI) for the detection of prostate cancer and to present a graphic reporting scheme for improved communication of findings to urologists. Materials and Methods: The ESUR has recently published a structured reporting system for mMRI of the prostate (PI-RADS). This system involves the use of 5-point Likert scales for grading the findings obtained with different MRI techniques. The mMRI includes T2-weighted MRI, diffusion-weighted imaging, dynamic contrast-enhanced MRI, and MR spectroscopy. In a first step, the fundamentals of technical implementation were determined by consensus, taking into account in particular the German-speaking community. Then, representative images were selected by consensus on the basis of examinations of the three institutions. In addition, scoring intervals for an aggregated PI-RADS score were determined in consensus. Results: The multiparametric methods were discussed critically with regard to implementation and the current status. Criteria used for grading mMRI findings with the PI-RADS classification were concretized by succinct examples. Using the consensus table for aggregated scoring in a clinical setting, a diagnosis of suspected prostate cancer should be made if the PI-RADS score is 4 or higher ({>=} 10 points if 3 techniques are used or {>=} 13 points if 4 techniques are used). Finally, a graphic scheme was developed for communicating mMRI prostate findings. Conclusion: Structured reporting according to the ESUR guidelines contributes to quality assurance by standardizing prostate mMRI, and it facilities the communication of findings to urologists. (orig.)

  16. Die rol van die onderwys in die handhawing en uitbouing van ons volkskultuur

    Directory of Open Access Journals (Sweden)

    G.J. Jordaan

    1970-03-01

    Full Text Available Op die oog af lyk dit ’n baie maklike onderwerp, maar hoe meer 'n mens daaroor nadink hoe ingewikkelder en omvangryker word die implikasies wat verband hou. Dit is veral so omdat dit hier voor alles gaan om eerste fundamentele uitgangspunte, dit wil sê, om lewens- en wêreldbeskouing. Dit geld van albei komponente — van onderwys sowel as van kultuur.

  17. Analytic studies on pollutant deposition through domestic coal combustion - influence of the current structural change on pollution in an urban region. Final report; Analytische Untersuchungen zum Schadstoffeintrag durch den Hausbrand - Auswirkungen des gegenwaertigen Strukturwandels auf die urbane Belastungssituation. Abschlussbericht

    Energy Technology Data Exchange (ETDEWEB)

    Engewald, W.; Knobloch, T.; Asperger, A.

    1996-12-31

    In the present paper the author reports on the continuation of an OEKOR part project in which he had undertaken a chemical characterisation of emissions from domestic brown coal combustion. On the basis of a partitioning by land use of the Greater Leipzig region he initiated long-term observations of local pollution levels for the various structural types of land. The aim of the work was to facilitate a comprehensive analysis of local air quality in terms of VOC levels. The current concern about VOCs results from the toxicological risk they have been proven to pose to the human organism and from their relevance to the chemistry of the atmosphere (e.g., as precursors of ground-level ozone and other oxidising agents). The task to be accomplished was broken down into the following main steps: Development and trial of a sampling and analysis method for determining an as wide a spectrum of environmental VOCs as possible; elaboration of a measuring strategy for obtaining results of high representativeness and power; installation and operation of pollution monitoring sites in selected structural types of area characteristic of Leipzig; execution of measuring campaigns of several weeks each at selected sites during both winter and summer periods. (orig./MSK) [Deutsch] In Fortsetzung eines vom Berichterstatter bearbeiteten OeKOR-Teilprojekts zur chemischen Charakterisierung von Emissionen aus dem Hausbrand von Braunkohle galt es, auf der Basis einer an der Flaechennutzung ausgerichteten Untergliederung der Stadtregion Leipzig in unterschiedliche Strukturtypen langfristige Immissionsbeobachtungen zu beginnen mit dem Ziel, eine Zustandsanalyse des Umweltmediums Luft bezueglich des Gehalts an fluechtigen organischen Verbindungen (VOC) in ihrer gesamten Breite zu ermoeglichen. Das verstaerkte Interesse an diesen Verbindungen resultiert aus dem fuer eine Reihe von VOC belegten toxikologischen Gefahrenpotential fuer den menschlichen Organismus sowie ihrer atmosphaerenchemischen

  18. Tweedimensionele generatorfunksie vir die vektorkardiogram vir gebruik in volume-geleidingsmodelle van die toraks

    Directory of Open Access Journals (Sweden)

    T. A. Geldenhuys

    2006-09-01

    Full Text Available ’n Elektrokardiogram (EKG meet die elektriese aktiwiteit van die hart op die veloppervlak. Volumegeleidingsmodelle van die toraks kan ontwerp word om hierdie metings te simuleer. ’n Generatorfunksie, wat die elektriese aktiwiteit van die hart beskryf, word benodig om hierdie simulasies aan te dryf. Hoewel soortgelyke simulasies van variërende kompleksiteit in die literatuur bespreek word, is daar ’n behoefte aan ’n vereenvoudigde, dog omvattende benadering wat kan dien as inleiding tot die onderwerp of vir gevalle waar ’n eerste-orde-benadering tot die probleem voldoende is. In hierdie artikel word ’n oorsig gegee oor die vektorinterpretasie van die EKG, ook bekend as ’n vektorkardiogram (VKG, in die tweedimensionele menslike frontale vlak. Die afleiding van die ekwivalente elektriese dipool (met ander woorde die kardiale vektor vanaf die VKG, wat gebruik kan word as ’n stroombron-generatorfunksie vir volumegeleidingsmodelle wat die EKG simuleer, word bespreek. ’n Prosedure om so ’n volume-geleidingsmodel met die eindige-element-tegniek te implementeer en die vereenvoudigde tweedimensionele generatorfunksie te gebruik, sowel as die resultate daarvan, word bespreek. Die algemene kenmerke van gemete EKG-afleidings stem ooreen met dié wat deur die eenvoudige model voorspel word.

  19. Die Meting van die verband tussen geslag en konformiteit as groepdinamiese veranderlikes.

    Directory of Open Access Journals (Sweden)

    W. S. de Villiers

    1982-11-01

    Full Text Available The amount and kind of conformity induced by group pressure depend upon the nature of the situation. The nature of the group and the characteristics of the individual. In this particular study the experimental measurement of conformity developed by Asch and Crutchfield was repeated. Confirmation was found that sex operates as one of the determinants of conformity. OpsommingIn die sosiale bedryfsielkunde is die invloed van die groep op die individu een van die vernaamste studieterreine. Die mate waarin ‘n individu konformeer tot groepsdruk hang af van die aard van die situasie, die aard van die groep en die eienskappe van die individu. In hierdie studie is die eksperimentele meting van konformiteit soos ontwikkel deur Asch en Crutchfield herhaal en bevestiging is gevind dat geslag een van die individuele determinante van konformiteit is.

  20. 17. Kassel symposium energy systems technology. Structures and grids for the future energy supply; 17. Kasseler Symposium Energie-Systemtechnik. Strukturen und Netze fuer die Energieversorgung von Morgen

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2012-07-01

    Within the 17th Kassel symposium from 11th to 12th October, 2012, in Kassel (Federal Republic of Germany), the following lectures were held: (1) E-Energy - the art of flexibilization between market and regulation (Michael Wedler); (2) The model region Harz (Florian Schloegl); (3) The role of IKT at the transformation of the energy supply - Chances for new business ideas (Arnold Picot); (4) Standardized connection of plants to IEC 61850 (Martin Winter); (5) Implementation of a IKT infrastructure for a virtual power plant in the model region Harz (Manuel Wickert); (6) OGEMA2.0 - Smart grid meets smart home (David Nestle); (7) Evaluation of the grid stability of a purely regenerative power supply (Kaspar Knorr); (8) Biogas plants and storage for the integration of renewable energies (Patrick Hochloff); (9) moma Architecture and functions in the intelligent energy system (Andreas Kiessling); (10) Power hub - showing the full potential of the VPP technology (Andreas Bjerre); (11) Implementation of electricity grids, heat grids and traffic grids - Potentials, requirements and efficiencies (Wolfram Wellssow); (12) Exploration of the regional distribution grid as a basis for the implementation of smart grids using the RegModHarz project as an example (Christian Roehrig); (13) New design and works management of distribution grids in decentralized supply structures (Martin Braun); (14) Advantages and challenges of the coupling of natural gas distribution systems and power distribution systems (Herbert Bauer); (15) Acceptance of renewable energies in the region Harz (Amelie Fechner); (16) Business models for a future 100 per cent supply of renewable energies (Peer Ritter).

  1. Die anderen Ausdrucksweisen: subtile Offensiven

    Directory of Open Access Journals (Sweden)

    Ella Jasiowka

    2002-03-01

    Full Text Available Was passiert, wenn der „Herrscher des filmischen Blickes“ eine Frau ist? Anhand zweier jeweils sehr unterschiedlicher Beispiele „weiblicher“ Filmkunst zeigt die Autorin, dass es nötig ist, herkömmliche Interpretationsmuster zu überwinden, um dem Filmschaffen einzelner Künstler und Künstlerinnen auf den Grund zu gehen. Da es nicht die „feministische Kunst“ an sich gibt, muß man für das Werk so unterschiedlicher Künstlerinnen wie Sally Potter und Jane Campion jeweils unterschiedliche Schlüssel suchen, um ihnen gerecht zu werden. Dies tut Radkiewicz in ihrem Werk – aus feministischer Perspektive. Sie holt jeweils verschieden weit aus, wenn es darum geht, künstlerische Herkunft, Biographie, Vorbilder und Ziele der Künstlerinnen zu deren Werk in Bezug zu setzten. Ohne zu bahnbrechend neuen Erkenntnissen zu kommen, gelingt es ihr doch, ein komplexes Bild der von ihr behandelten Filmemacherinnen und den Filmen zu entwerfen, das einen umfassenden Gesamteindruck vermittelt. Die Kürze des Buches bringt dabei eine Konzentration mit sich, die zu einer Weiterbeschäftigung und Vertiefung einlädt.

  2. Die Welt als Fassade : kosmischer Schrecken als Angriff auf die Wirklichkeit

    OpenAIRE

    Zuch, Rainer

    2015-01-01

    "The oldest and strongest emotion of mankind is fear, and the oldest and strongest kind of fear is fear of the unknown." Mit diesem Satz eröffnet Howard Phillips Lovecraft 1927 seinen berühmten Essay "Supernatural Horror in Literature". In der Phantastik wird oft die Demontage der Erfahrungswirklichkeit durch die Kontaminierung mit dem Wunderbaren thematisiert; die bekannte Welt bekommt Risse, durch die das Unbekannte eindringt. Radikalisiert wird dies in Konzepten, die die gesamte vertrau...

  3. Die resepsie van die Heidelbergse Kategismus (Sondag 17 en 22 insake die opstanding in die Nederduitse Gereformeerde Kerk sedert 2000 (Deel 2

    Directory of Open Access Journals (Sweden)

    Johannes W. Hofmeyr

    2013-06-01

    Full Text Available Met die 450e herdenking van die Heidelbergse Kategismus as vertrekpunt, word met die huidige en die vorige artikel gepoog om lig te werp op die plek, die rol en die interpretasie van die opstanding van Jesus Christus in veral Sondag 17 en 22, spesifiek in die konteks van twee besondere eras in die Nederduitse Gereformeerde (NG Kerk. In die vorige artikel is allereers ’n bespreking gevoer oor die Heidelbergse Kategismus (HK. Daar is gekyk na die resepsie van die betrokke HK-geloofsartikels in die era van Andrew Murray, spesifiek teen die agtergrond van die negentiende-eeuse liberale teologie in Nederland. In die huidige artikel word soortgelyk gekyk na die resepsie van die betrokke HK-geloofsartikels in die NG Kerk na 2000, teen die agtergrond van die herverskyning van die negentiende-eeuse liberale teologie in die vorm van die Jesus Seminaar, die Nuwe Hervorming en ondersteuners daarvan binne die NG Kerk. Sowel die negentiende-eeuse liberale stryd in die NG Kerk asook die stryd oor die opstanding in die NG Kerk van die eerste dekade van die een-en-twintigste eeu, soos verder in hierdie artikel sal blyk, was gekenmerk deur kontekstueelbepaalde uniekhede. Die gemene deler was dat albei deel was van tye van teologiese vrysinnigheid. In die lig van hierdie bespreking word tot die gevolgtrekking gekom dat die NG Kerk tans, betreffende haar identiteit as gereformeerde kerk waarskynlik in ’n kritieke geloofs- en toekomskrisis verkeer. Dit impliseer kommerwekkende gevolge vir haar Skrifverstaan en getuienis as belydenis en belydende kerk van Jesus Christus en haar toekoms. Alleen duidelike visie, verantwoordelike leierskap en ’n herontdekking van die verlossingskrag van Christus se kruis en opstanding sal herstellende, positiewe en dinamiese oplossings kan bied om sodoende die NG Kerk te red van ’n snelwentelende afwaartse spiraal.With the 450th celebrations of the origin of the Heidelberg Catechism (HC in mind, the main aim of this and the

  4. Moderne diskoerse in die teologie vandag

    Directory of Open Access Journals (Sweden)

    J.H. van Wyk

    2013-11-01

    Full Text Available In hierdie artikel word aandag gevra vir enkele moderne diskoerse in die teologie vandag. Volgens die outeur staan die vrae oor God, Jesus, die mens en die aarde in die sentrum van belangstelling en oorheers dit in ’n groot mate die teologiese debat. Die opkoms van die moderne aggressiewe ateïsme, die wetenskaplike navorsing oor die historiese Jesus, die groeiende vrae oor die mens en die menslike samelewing, asook die dreigende ekologiese krisis op aarde, sorg vir nuwe debatte van ongekende omvang. Die outeur bespreek hierdie debatte oorsigtelik, met kritiek waar nodig, en sluit af met enkele rigtingwysers van wat hy as ‘goeie teologie’ verstaan.In this article attention is paid to some modern discourses in theology today. According to the author the questions about God, Jesus, man and the earth are in the centre of interest and to a large extent dominate the theological debate. The rise of modern aggressive atheism, the scientific research on the historic Jesus, the growing questions about man and human society as well as the threatening ecological crisis on earth, provide new discourses of unparalleled magnitude. The author provides a broad summary of these discourses, with criticism where necessary, and concludes with some indicators of his view what can be called ‘good theology’.

  5. Die Ökonomik der Reputation

    OpenAIRE

    Tegtmeyer, Jan C.

    2005-01-01

    Gegenstand dieser Arbeit ist die Betrachtung der Reputation eines Unternehmens aus ökonomischer Sicht. Die Zusammenfassung von Beurteilungen der Unternehmensaktivitäten durch wirtschaftlich relevante Interessengruppen bildet eine Unternehmensreputation. Die Reputation wird hier mit einem betriebswirtschaftlichen Kosten-Nutzen Kalkül betrachtet. Nur mit einer Reputation, die durch eine vorteilhafte Beurteilung der Unternehmensleistung entsteht, kann ein Unternehmen wirtschaftliche Vorteile gen...

  6. Die «ASEAN-Wirtschaftsgemeinschaft»

    DEFF Research Database (Denmark)

    Juego, Bonn

    2014-01-01

    Entwicklungsstufen, wie sie unterschiedlicher kaum sein können. Der Autor, Bonn Juego, nimmt die ASEAN Vision 2020 sowie die Debatten, die diesbezüglich in den einzelnen Ländern geführt werden, unter die Lupe. Er geht dem Potenzial des ASEANAnsatzes zu sozialer Teilhabe und wirtschaftlicher Verteilungsgerechtigkeit...

  7. Acting to let someone die.

    Science.gov (United States)

    McGee, Andrew

    2015-02-01

    This paper examines the recent prominent view in medical ethics that withdrawing life-sustaining treatment (LST) is an act of killing. I trace this view to the rejection of the traditional claim that withdrawing LST is an omission rather than an act. Although that traditional claim is not as problematic as this recent prominent view suggests, my main claim is that even if we accepted that withdrawing LST should be classified as an act rather than as an omission, it could still be classified as letting die rather than killing. Even though omissions are contrasted with acts, letting die need not be, for one can let die by means of acts. The remainder of the paper is devoted to establishing this claim and addresses certain objections to it.

  8. ’n Etiek van liefde: Die etiese perspektiewe van die Heidelbergse Kategismus

    Directory of Open Access Journals (Sweden)

    Koos Vorster

    2013-06-01

    Full Text Available Hierdie artikel behandel die etiese perspektiewe van die Heidelbergse Kategismus – een van die prominente belydenisskrifte in die gereformeerde tradisie. Die etiese relevansie is ingebed in die konfessie se verklaring van die tien gebooie. Die artikel verduidelik dat die etiek van die Heidelbergse Kategismus ten diepste ’n karakteretiek is en dat dit gelowiges oproep tot ’n etiek van liefde. Hierdie liefde sluit in liefde vir die verbondsgemeenskap, die bediening van die Woord, die heiligheid van God en die waardigheid van mense, die gemeenskap van die gelowiges, gesag, die lewe, die huwelik, privaatbesit en arbeid asook waarheid en geregtigheid. As gevolg van die sinekdogeekarakter van die wet is hierdie etiek van liefde vandag baie relevant.This article deals with the ethical relevance of one of the prominent confessions in the reformed tradition, namely the Heidelberg Cathechism. The ethical relevance lies in the confession’s elucidation of the ten commandments and its application to moral conduct. The article explains that the ethics of the Heidelberg Catechism is essentially a virtue ethics calling for an ethics of love. This love should include love for the covenantal communion, ministry of the Word, the holiness of God and the dignity of people, the communion of the saints, authority, life, marriage, private property and labour, and truth and justice. Due to the synecdochical character of the ten commandments this ethics of love is highy relevant in the present times.

  9. Leerteoretiese basis van die andragogie

    Directory of Open Access Journals (Sweden)

    C. J. A. Simpson

    1991-06-01

    Full Text Available Learning theory basis of andragogy. A cursory glance at andragogy creates the impression that humanistic learning theory plays an all encompassing role in the learner centered approach andragogy espouses. A closer look, however, reveals that Knowles (1973, after having made an intensive study of learning theory, created an extensive framework within which human resource development can take place. The fact that Knowles attracted critique from different areas, led to a need to ascertain the role different learning theories, if any, played in the emergence of andragogy. Having looked at the assumptions displayed by the andragogical approach, as well as a comparison of different learning theories and their connection with andragogy, it became clear that andragogy contains elements of various learning theories in an adapted way. These adaptations resulted in an approach to adult education in which learners are given the opportunity to be part of the learning process in such a way that they themselves contribute to the development which takes place. Opsomming Met 'n eerste oogopslag wil dit voorkom asof humanistiese leerteorie 'n oorheersende rol in die leerdergesentreerde benadering van andragogie speel. By nadere ondersoek blyk dit egter dat Knowles (1973, na 'n deeglike studie van verskillende leerteoretiese beginsels, 'n omvangryke raamwerk geskep het waarbinne, aan die hand van verskeie aangepaste leerteoretiese beginsels, menslike hulpbronontwikkeling kan plaasvind. As gevolg van die feit dat Knowles vanuit verskillende oorde kritiek op die lyf geloop het, is besluit om die rol wat verskillende leerteorieë in andragogie speel, te bestudeer. Dit blyk dat andragogie nie net elemente van verskillende leerteorieë bevat nie, maar dat toepaslike aspekte van die teoriee wat ondersoek is, benut en aangepas is om 'n geintegreerde benadering te bewerkstellig waarin veral volwassene-leerders by leergeleenthede en hulle selfontwikkeling betrek word.

  10. Improving stellar parameter and abundance determinations of early B-type stars

    CERN Document Server

    Nieva, Maria-Fernanda

    2009-01-01

    In the past years we have made great efforts to reduce the statistical and systematic uncertainties in stellar parameter and chemical abundance determinations of early B-type stars. Both the construction of robust model atoms for non-LTE line-formation calculations and a novel self-consistent spectral analysis methodology were decisive to achieve results of unprecedented precision. They were extensively tested and applied to high-quality spectra of stars from OB associations and the field in the solar neighbourhood, covering a broad parameter range. Initially, most lines of hydrogen, helium and carbon in the optical/near-IR spectral range were reproduced simultaneously in a consistent way for the first time, improving drastically on the accuracy of results in published work.By taking additional ionization equilibria of oxygen, neon, silicon and iron into account, uncertainties as low as ~1% in effective temperature, ~10% in surface gravity and ~20% in elemental abundances are achieved - compared to ~5-10%, ~2...

  11. Discovery of a magnetic field in the early B-type star sigma Lupi

    CERN Document Server

    Henrichs, H F; Plaggenborg, B; Marsden, S C; Waite, I A; Landstreet, J D; Wade, G A; Grunhut, J H; Oksala, M E

    2012-01-01

    Magnetic early B-type stars are rare. To identify them, we use the strongest indirect indicator of a magnetic field in B stars, which is periodic variability of UV stellar wind lines occurring symmetric about the approximate rest wavelength. Probable magnetic candidates are targets for follow-up spectropolarimetry to search for a magnetic field. From the UV wind line variability the B1/B2V star sigma Lupi emerged as a new magnetic candidate star. AAT spectropolarimetric measurements with SEMPOL were obtained. The longitudinal component of the magnetic field integrated over the visible surface of the star was determined with the Least-Squares Deconvolution method. The UV line variations of sigma Lupi are similar to what is known in magnetic B stars, but no periodicity could be determined. We detected a varying longitudinal magnetic field with amplitude of about 100 G with error bars of typically 20 G, which supports an oblique magnetic-rotator configuration. The EW variations of the UV lines, the magnetic and ...

  12. Endothelial Expression of Scavenger Receptor Class B, Type I Protects against Development of Atherosclerosis in Mice

    Directory of Open Access Journals (Sweden)

    Boris L. Vaisman

    2015-01-01

    Full Text Available The role of scavenger receptor class B, type I (SR-BI in endothelial cells (EC was examined in several novel transgenic mouse models expressing SR-BI in endothelium of mice with normal C57Bl6/N, apoE-KO, or Scarb1-KO backgrounds. Mice were also created expressing SR-BI exclusively in endothelium and liver. Endothelial expression of the Tie2-Scarb1 transgene had no significant effect on plasma lipoprotein levels in mice on a normal chow diet but on an atherogenic diet, significantly decreased plasma cholesterol levels, increased plasma HDL cholesterol (HDL-C levels, and protected mice against atherosclerosis. In 8-month-old apoE-KO mice fed a normal chow diet, the Tie2-Scarb1 transgene decreased aortic lesions by 24%. Mice expressing SR-BI only in EC and liver had a 1.5 ± 0.1-fold increase in plasma cholesterol compared to mice synthesizing SR-BI only in liver. This elevation was due mostly to increased HDL-C. In EC culture studies, SR-BI was found to be present in both basolateral and apical membranes but greater cellular uptake of cholesterol from HDL was found in the basolateral compartment. In summary, enhanced expression of SR-BI in EC resulted in a less atherogenic lipoprotein profile and decreased atherosclerosis, suggesting a possible role for endothelial SR-BI in the flux of cholesterol across EC.

  13. The nature of the late B-type stars HD 67044 and HD 42035

    CERN Document Server

    Monier, R; Royer, F

    2016-01-01

    While monitoring a sample of apparently slowly rotating superficially normal bright late B and early A stars in the northern hemisphere, we have discovered that HD 67044 and HD 42035, hitherto classified as normal late B-type stars, are actually respectively a new chemically peculiar star and a new spectroscopic binary containing a very slow rotator HD 42035 S with ultra-sharp lines (vsini = 3.7 km/s) and a fast rotator HD 42035 B with broad lines. The lines of Ti, Cr, Mn, Sr, Y, Zr and Ba are conspicuous features in the high resolution SOPHIE spectrum of HD 67044. The HgII line at 3983.93 A is also present as a weak feature. The composite spectrum of HD 42035 is characterised by very sharp lines formed in HD 42035 S superimposed onto the shallow and broad lines of HD 42035 B. These very sharp lines are mostly due to light elements from C to Ni, the only heavy species definitely present are Sr and Ba. Selected lines of 21 chemical elements from He up to Hg have been synthesized using model atmospheres compute...

  14. Solids flow diagram of a CFB riser using Geldart B-type powders

    Institute of Scientific and Technical Information of China (English)

    Shiva Mahmoudi; Chian Wen Chan; Anke Brems; Jonathan Seville; Jan Baeyens

    2012-01-01

    Riser operating modes are vital to designing a circulating fluidized bed (CFB) reactor for a required process of either a gas-solid or a gas-catalytic nature.Different operating modes provide different solids' residence times and mixing behaviors,which define the reactions' efficiency and yield.The literature demonstrates distinct operating modes resulting from observed differences in slip factors and the range of particle velocities and their associated residence time distribution.The present research uses positron emission particle tracking (PEPT) in a riser of B-type bed material to determine the different operating modes by measuring (i) particle velocities and residence time distribution,(ii) population densities of these particles in the cross-sectional area of the riser,and (iii) solids flow pattern at the bottom of the riser.Data treatment defines four distinct solids hold-up regimes in the riser and proposes a “phase diagram” depicting the existence of the different operating modes (dilute,dense,core-annulus and combined) as a function of the superficial gas velocity and solids circulation flux in the riser.The delineated regimes have good agreement with available literature data and known industrial operations.Comparison with literature data for risers using A-type powders is also fair.The diagram enables CFB designers to better delineate operating characteristics.

  15. Cortical Brain Connectivity and B-Type Natriuretic Peptide in Patients With Congestive Heart Failure.

    Science.gov (United States)

    Vecchio, Fabrizio; Miraglia, Francesca; Valeriani, Lavinia; Scarpellini, Maria Gabriella; Bramanti, Placido; Mecarelli, Oriano; Rossini, Paolo M

    2015-07-01

    The brain has a high level of complexity and needs continuous oxygen supply. So it is clear that any pathological condition, or physiological (aging) change, in the cardiovascular system affects functioning of the central nervous system. We evaluated linear aspects of the relationship between the slowness of cortical rhythms, as revealed by the modulation of a graph connectivity parameter, and congestive heart failure (CHF), as a reflection of neurodegenerative processes. Eyes-closed resting electroencephalographic (EEG) data of 10 patients with CHF were recorded by 19 electrodes positioned according the international 10-20 system. Graph theory function (normalized characteristic path length λ) was applied to the undirected and weighted networks obtained by lagged linear coherence evaluated by eLORETA software, therefore getting rid of volumetric propagation influences. The EEG frequency bands of interest were: delta (2-4 Hz), theta (4-8 Hz), alpha 1 (8-10.5 Hz), alpha 2 (10.5-13 Hz), beta 1 (13-20 Hz), beta 2 (20-30 Hz), and gamma (30-40 Hz). The analysis between B-type natriuretic peptide (BNP) values and λ showed positive correlation in delta, associated with a negative correlation in alpha 2 band. Namely, the higher the severity of the disease (as revealed by the BNP vales), the higher the λ in delta, and lower in alpha 2 band. Results suggest that delta and alpha λ indices are good markers of the severity of CHF.

  16. WW Geminorum: An early B-type eclipsing binary evolving into the contact phase

    Energy Technology Data Exchange (ETDEWEB)

    Yang, Y.-G.; Dai, H.-F.; Yin, X.-G. [School of Physics and Electronic Information, Huaibei Normal University, 235000 Huaibei, Anhui Province (China); Yang, Y., E-mail: yygcn@163.com, E-mail: yangyg@chnu.edu.cn, E-mail: yangy818@yeah.net [Department of Electronic Engineering, School of Information Science Technology, East China Normal University, 200241 Shanghai (China)

    2014-11-01

    WW Gem is a B-type eclipsing binary with a period of 1.2378 days. The CCD photometry of this binary was performed in 2013 December using the 85 cm telescope at the Xinglong Stations of the National Astronomical Observatories of China. Using the updated W-D program, the photometric model was deduced from the VRI light curves. The results imply that WW Gem is a near-contact eclipsing binary whose primary component almost fills its Roche lobe. The photometric mass ratio is q {sub ph} = 0.48(± 0.05). All collected times of minimum light, including two new ones, were used for the period studies. The orbital period changes of WW Gem could be described by an upward parabola, possibly overlaid by a light-time orbit with a period of P {sub mod} = 7.41(± 0.04) yr and a semi-amplitude of A = 0.0079 days(± 0.0005 days), respectively. This kind of cyclic oscillation may be attributed to the light-travel time effect via the third body. The long-term period increases at a rate of dP/dt = +3.47(±0.04) × 10{sup –8} day yr{sup –1}, which may be explained by the conserved mass transfer from the less massive component to the more massive one. With mass transfer, the massive binary WW Gem may be evolving into a contact binary.

  17. Identification of a hemerythrin-like domain in a P1B-type transport ATPase†

    Science.gov (United States)

    Traverso, Matthew E.; Subramanian, Poorna; Davydov, Roman; Hoffman, Brian M.; Stemmler, Timothy L.; Rosenzweig, Amy C.

    2010-01-01

    The P1B-type ATPases couple the energy of ATP hydrolysis to metal ion translocation across cell membranes. Important for prokaryotic metal resistance and essential metal distribution in eukaryotes, P1B-ATPases are divided into subclasses on the basis of their metal substrate specificities. Sequence analysis of putative P1B-5-ATPases, for which the substrate has not been identified, led to the discovery of a C-terminal soluble domain homologous to hemerythrin (Hr) proteins and domains. The Hr domain from the Acidothermus cellulolyticus P1B-5-ATPase was cloned, expressed, and purified (P1B-5-Hr). P1B-5-Hr binds two iron ions per monomer and adopts a predominantly helical fold. Optical absorption features of the iron-loaded and azide-treated protein are consistent with features observed for other Hr proteins. Autooxidation to the met form is very rapid, as reported for other prokaryotic Hr domains. The presence of a diiron center was confirmed by electron paramagnetic resonance (EPR) and X-ray absorption spectroscopic (XAS) data. The occurrence of a Hr-like domain in a P-type ATPase is unprecedented and suggests new regulatory mechanisms as well as an expanded function for Hr proteins in biology. PMID:20672819

  18. Oxygen abundance determination of B-type stars with the OI 7771-5A lines

    CERN Document Server

    Takeda, Yoichi

    2016-01-01

    Oxygen abundances of 34 B-type stars in the effective temperature range of Teff~10000-28000K with diversified rotational velocities (vesini~ 0-250km/s) were determined from the OI triplet lines at 7771-5A, with an aim to examine whether this OI feature can be a reliable abundance indicator for such high-temperature stars including rapid rotators. It revealed that the required non-LTE abundance correction is distinctly large (ranging from ~-0.6dex to ~-1.7dex) and its consideration is indispensable. On the condition that the non-LTE effect is taken into account, this triplet is a useful O abundance indicator (with a precision of ~200mA). In contrast, it is not adequate for abundance derivation for stars at Teff >~25000K, where its strength rapidly drops down toward a hardly detectable level (except for sharp-lined stars) and its sensitivity to Teff or log g becomes considerably large. The resulting non-LTE oxygen abundances turned out to be almost normal (i.e., near-solar around ~8.7-8.8 within +/-~0.2dex) for...

  19. B-type natriuretic peptide to predict ductus intervention in infants <28 weeks.

    Science.gov (United States)

    Czernik, Christoph; Lemmer, Julia; Metze, Boris; Koehne, Petra S; Mueller, Christian; Obladen, Michael

    2008-09-01

    Patent ductus arteriosus (PDA) is frequent in neonates with gestational age of less than 28 wk. Clinical and echocardiographic signs define hemodynamic significance of PDA, but do not reveal the need for PDA intervention in the first days of life. B-type natriuretic peptide (BNP) has been proposed as a screening tool for PDA in preterm infants. To determine whether BNP can predict the need for PDA intervention, plasma BNP was measured by chemiluminescence immunoassay in 67 preterm infants <28 wk (median 26) on the second day of life in a prospective blinded study. PDA intervention was based on specified clinical and echocardiographic findings. Twenty-four patients (intervention group) received treatment for PDA and 43 patients (controls) remained without intervention. BNP concentrations were higher in the intervention (median 1069 pg/mL) than in the control group (247 pg/mL, p < 0.001). BNP correlated positively with ductal size (R = 0.46, p < 0.001) and atrial/aortic root ratio (R = 0.54, p < 0.001). In conclusion, plasma BNP proved to be a good predictor for ductus intervention (area under the curve: 0.86) with the best cutoff at 550 pg/mL on the second day of life in ventilated infants less than 28 wk gestation (sensitivity: 83%; specificity: 86%).

  20. B-type natriuretic peptide modulates ghrelin, hunger, and satiety in healthy men.

    Science.gov (United States)

    Vila, Greisa; Grimm, Gabriele; Resl, Michael; Heinisch, Birgit; Einwallner, Elisa; Esterbauer, Harald; Dieplinger, Benjamin; Mueller, Thomas; Luger, Anton; Clodi, Martin

    2012-10-01

    Chronic heart failure is accompanied by anorexia and increased release of B-type natriuretic peptide (BNP) from ventricular cardiomyocytes. The pathophysiological mechanisms linking heart failure and appetite regulation remain unknown. In this study, we investigated the impact of intravenous BNP administration on appetite-regulating hormones and subjective ratings of hunger and satiety in 10 healthy volunteers. Participants received in a randomized, placebo-controlled, crossover, single-blinded study (subject) placebo once and 3.0 pmol/kg/min human BNP-32 once administered as a continuous infusion during 4 h. Circulating concentrations of appetite-regulating peptides were measured hourly. Subjective ratings of hunger and satiety were evaluated by visual analog scales. BNP inhibited the fasting-induced increase in total and acylated ghrelin concentrations over time (P = 0.043 and P = 0.038, respectively). In addition, BNP decreased the subjective rating of hunger (P = 0.009) and increased the feeling of satiety (P = 0.012) when compared with placebo. There were no significant changes in circulating peptide YY, glucagon-like peptide 1, oxyntomodulin, pancreatic polypeptide, leptin, and adiponectin concentrations. In summary, our results demonstrate that BNP exerts anorectic effects and reduces ghrelin concentrations in men. These data, taken together with the known cardiovascular properties of ghrelin, support the existence of a heart-gut-brain axis, which could be therapeutically targeted in patients with heart failure and obesity.

  1. HE 0437-5439 -- an unbound hyper-velocity main-sequence B-type star

    CERN Document Server

    Edelmann, H; Heber, U; Christlieb, N; Reimers, D; Edelmann, Heinz; Napiwotzki, Ralf; Heber, Uli; Christlieb, Norbert; Reimers, Dieter

    2005-01-01

    We report the discovery of a 16th magnitude star, HE0437-5439, with a heliocentric radial velocity of +723+-3km/s. A quantitative spectral analysis of high-resolution optical spectra obtained with the VLT and the UVES spectrograph shows that HE0437-5439 is a main sequence B-type star with Teff=20350K, log g=3.77, solar within a factor of a few helium abundance and metal content, rotating at v sin i=54km/s. Using appropriate evolutionary tracks we derive a mass of 8 Msun and a corresponding distance of 61 kpc. Its galactic rest frame velocity is at least 563km/s, almost twice the local Galactic escape velocity, indicating that the star is unbound to the Galaxy. Numerical kinematical experiments are carried out to constrain its place of birth. It has been suggested that such hyper-velocity stars can be formed by the tidal disruption of a binary through interaction with the super-massive black hole at the Galactic center (GC). HE0437-5439 needs about 100Myrs to travel from the GC to its presentposition, much lon...

  2. Ein Blick hinter die Kulissen

    Directory of Open Access Journals (Sweden)

    Michaela Kempter

    2012-12-01

    Full Text Available In den Games-Workshops der wienXtra-spielebox lernen Kinder zwischen 7 und 12 Jahren empfehlenswerte Computer- und Konsolenspiele kennen und reflektieren nebenbei ihren Spielkonsum. Dieser Beitrag lässt die Leserinnen und Leser einen Blick hinter die Kulissen der Arbeit von wienXtra werfen.wienXtra-spielebox offers gaming workshops for young people between 7 and 12 years. The objective of these workshops is to explore new games that are evaluated as suited for the target group and to let the girls and boys reflect their playing habits. This article describes the work of wienXtra-spielebox.

  3. How Tycho Brahe really died

    DEFF Research Database (Denmark)

    Jacobsen, Aase Roland; Petersen, Lars

    2001-01-01

    In 2001 we commemorate the 4th centenary of the death of Tycho Brahe, perhaps the first great scientists in a modern sense.This famous Danish astronomer died in Prague on the 24th of October 1601, eleven days after he had attended a banquet at the Bohemian count of Rosenberg. Tycho was too...... courteous to obey the calls of nature during the hour-long dinner and finally his bladder burst, which led to his death. Or so the story goes. But is this the real cause of Tycho's death? Is it at all possible to die from a burst bladder? Or are there more likely explanations of his death?...

  4. Die funksie van die belydenis en die dogma in die struktuur van die Nederduitsch Hervormde Kerk en die implikasies daarvan vir die predikant

    Directory of Open Access Journals (Sweden)

    A. D. Pont

    1985-01-01

    Full Text Available The function of the Confession and Doctrine in the structure of the NHK and the implications thereof for a minister of the WordThe whole question of the function of the Confession and Doctrine in the structure of the NHK is mainly a question of church order. This matter is treated, in the first place, by looking at history and the calvinist roots of the Church. Because the Confessio Belgica names the true preaching of the Word as one of the marks of the Church, it is of paramount importance for the Church to maintain true preaching. The norm by which true preaching is measured, is the regula fidei, i e the Bible and in the second place the Confession and the Doctrine. In the form of subscription by the ministers of the Word they acknowledge that Confession is in accordance with the Word and therefore a true norm for measuring true preaching. Three cases of alleged heresy committed by ministers are examined to determine in which way the Church Councils applied the mentioned norms.

  5. The Cape Gunsmith / Die Kaapse Geweersmid

    Directory of Open Access Journals (Sweden)

    W. Otto

    2012-02-01

    Full Text Available In die Verslag van die Kommissie van Ondersoek na die Koordinering van Museums op 'n Nasionale Vlak (RP 113/1975, word vyf kolomme gewy aan historiese vuurwapens. Die kommissie wys op die belangrike plek wat vuurwapens in Suid-Afrika se wordingsgeskiedenis inneem en voeg daaraan toe dat geen museum in Suid-Afrika hierdie belangrike veld in sy uitstallings dek nie.

  6. Chirurgie in die Grieks-Romeinse era

    Directory of Open Access Journals (Sweden)

    François P. Retief

    2006-09-01

    Full Text Available In die Grieks-Romeinse era het mediese behandeling kenmerkend uit drie elemente bestaan, naamlik regimen (dieet en gesonde leefwyse, geneesmiddels en chirurgie – laasgenoemde alleen toegepas indien regimen en geneesmiddels onsuksesvol was. Bewyse van primitiewe chirurgie dateer terug na die Bronstydperk, en in Homerus se eposse is heelwat vermelding van die chirurgiese hantering van oorlogswonde, met tussenkoms van die gode. Met die koms van empiriese geneeskunde in die 5de eeu v.C. het chirurgie in die Hippokratiese Corpus prominent gefigureer met beduidende bydraes in veral die ortopediese veld en hoofbeserings. Uitbouing van anatomiese en fisiologiese kennis, gebaseer op disseksie van menslike kadawers in Alexandrië vanaf die laat 4de eeu v.C., het chirurgie ’n hupstoot gegee. Teen die Romeinse era vanaf die 2de eeu v.C. het snykundetegnieke (en -instrumente beduidend verbeter, maar is steeds oorwegend deur Griekse geneeshere beoefen. Van geneeshere is steeds verwag om al drie bovermelde terapeutiese modaliteite te bemeester, maar chirurgie het meer aansien verwerf en daar is al meer in onderafdelings van chirurgie soos oogheelkunde, vrouesiektes en verloskunde, blaaskwale en mond- en keelsnykunde gespesialiseer. Militêre geneeskunde was in die Romeinse Ryk ’n belangrike aktiwiteit, en het veral traumachirurgie uitgebou. Betreding van die buik- en toraksholtes was nie meer noodwendig fataal nie, en veeartsenykunde het tot stand gekom. Die eerste beduidende chirurgiehandboek ná die Hippokratiese Corpus is in die 1ste eeu n.C. deur Celsus opgestel. Vanaf die 3de eeu het die chirurgieberoep min vordering gemaak, die beroepstaal het mettertyd van Grieks na Latyn verander en kundigheid is later veral deur Islam-geneeshere na die Middeleeue en later oorgedra.

  7. Die Belydenis van Belhar en die ekumene teen die agtergrond van die Drie Formuliere van Eenheid

    Directory of Open Access Journals (Sweden)

    A. le R. du Plooy

    2010-07-01

    Full Text Available The Confession of Belhar and ecumenism against the backdrop of the Three Forms of Unity This article focuses on the Confession of Belhar and in- vestigates from an ecclesiastical and theological perspective the question whether this confession should be accepted and added as a fourth confession to the existing Three Forms of Unity. The following aspects are addressed: the origin and content of the Confession of Belhar, the ecclesiastical and theological reaction within the family of Dutch Reformed Churches as well as in the reformed ecumenical world. A critical analysis of the content is made and evaluated, and in con- clusion attention is given to a few options with regard to the place of the Confession of Belhar in the reformed ecumenical world in the future. A comparison between the Three Forms of Unity and the Confession of Belhar shows a definite difference in quality. The Confession of Belhar is not of a similar standard with regard to the theological and doctrinal content and structure of the Three Forms of Unity, and does not add quality or neglected faith-related value to these existing creeds.

  8. Calvyn en die Calvinisme

    Directory of Open Access Journals (Sweden)

    B. J. Engelbrecht

    1988-01-01

    Full Text Available Calvin and Calvinism The theology of Calvin had and still has a worldwide influence. During the course of history, theologians suggested various themes as the central theme of Calvin's theology around which it is possible to structure all the aspects of his theological thought to a coherent system. It is a question if this is really possible writhout a lesser or greater measure of distortion of Calvin's own theological thought. In this article two 'central themes' are treated, that is the theme of the soli Deo gloria and the theme of the sola et tola Scriptura. In each case Calvin's own thinking on the subject concerned, is described and then the various interpretations in history of the theme concerned are treated. In this way trends in calvinistic thinking and groups such as Kuypers Neo-Calvinism, the Social Gospel, the rationalistic Orthodoxism, the methodistic Pietism, the Enlightenment, theological Liberalism and modem hermeneutics are broached. Finally, ensuing from this, the most important issues to be adrcssed presently in Calvinistic thought, are identified.

  9. Short time die attach characterisation of semiconductor devices

    CERN Document Server

    Szabo, P

    2008-01-01

    Thermal qualification of the die attach of semiconductor devices is a very important element in the device characterization as the temperature of the chip is strongly affected by the quality of the die attach. Voids or delaminations in this layer may cause higher temperature elevation and thus damage or shorter lifetime. Thermal test of each device in the manufacturing process would be the best solution for eliminating the devices with wrong die attach layer. In this paper we will present the short time thermal transient measurement method and the structure function evaluation through simulations and measurements for die attach characterization. We will also present a method for eliminating the very time consuming calibration process. Using the proposed methods even the in-line testing of LEDs can be accomplished.

  10. Bevordering van transformerende leer: Die skryf van ’n reflektiewe joernaal in die Natuurwetenskappe

    Directory of Open Access Journals (Sweden)

    Erna R. du Toit

    2012-03-01

    Full Text Available Die doel van die artikel is om aan te toon hoe die skryf van ’n reflektiewe joernaal in die Natuurwetenskappe die perspektiewe en denke van onderwysstudente kan transformeer en/of leer kan bevorder. Die studie maak voorspraak vir die gebruik van ’n reflektiewe joernaal as ’n instrument vir studente om betekenis te gee aan die leeromgewing vanuit verskillende perspektiewe deur te leer in praktyk. ’n Kwalitatiewe navorsingsmetode is gevolg om die inskrywings in ’n joernaal te analiseer aan die hand van bepaalde indikatore. Die bevindinge toon dat die meeste studente na die praktykervaring positief was en sommiges het tot ander perspektiewe vanweë hul ervaring gekom.

  11. Die invloed van drie kruisbestuiwers op die saadinhoud van Minneola tangelo (Citrus parodist x C reticulata

    Directory of Open Access Journals (Sweden)

    H. J. Esterhuizen

    1991-07-01

    Full Text Available Die invloed van verskillende kruisbestuiwers (Clementine, Empress en Valencia op die gemiddelde saadinhoud van Minneo­la tangelo is ondersoek. Clementine en Empress as kruisbestuiwers het die grootste invloed op die gemiddelde saadinhoud van die vrugte gehad, terwyl dié van Valencia nie noemenswaardig was nie. Die gemiddelde saadinhoud van die vrugte het afgeneem met toename in afstand vanaf die kruisbestuiwer. Indien ’n beperking op die afstand tussen kultivar en kruisbestuiwer geplaas word, sal ’n groter persentasie vrugte aan uitvoerstandaarde ten opsigte van saadinhoud voldoen.

  12. Where is God in My Dying?

    DEFF Research Database (Denmark)

    Moestrup, R N Lene; Hvidt, Niels Christian

    2016-01-01

    Despite increased focus on the role of spiritual care in palliative care, there is limited knowledge about spirituality / religiosity among dying patients in secularized cultures such as Denmark. This study aims through semi-structured interviews with Danish hospice patients and participant...... observation to elucidate how hospice patients reflect and act upon their potential faith. The results demonstrate three dimensions of faith: (1) "Knowing" (cognition), (2) "doing" (praxis) and (3) "being" (meaning). The article concludes that most patients had a hesitant, but according to their situation...

  13. Robert Merton Dies at 92

    Science.gov (United States)

    Snell, Joel C.

    2006-01-01

    This article features Robert Merton, who died recently at age 92. Merton came into this world as a Jewish baby named Meyer Schkolnick. He lived in South Philly where his parents wrenched a living as blue-collar workers. Merton chose an Anglicized name to move into the Yankee dominated America of the 20's and 30's. At Harvard, he studied under…

  14. MOOCs; vanwaar al die ophef?

    NARCIS (Netherlands)

    Henderikx, Maartje; Kreijns, Karel

    2016-01-01

    MOOCs; vanwaar die ophef? Het nog maar zeer recente fenomeen MOOCs (massive open online courses) heeft zich in korte tijd al een onwrikbare positie weten in te nemen in het open online onderwijs. De hype rondom deze nieuwe manier van onderwijs geven bereikte zijn hoogtepunt in 2012, dat prompt werd

  15. Die Suche nach den Gottesteilchen

    CERN Multimedia

    2007-01-01

    2008 wird der größte jemals gebaute Teilchenbeschleuniger in Betrieb genommen Anlässlich des Mathematik-Jahres 2008 hat der Experimentalphysiker der Universität Hamburg und der designierte Generaldirektor des europäischen Zentrums für Teilchenphysik CERN in Genf, Rolf-Dieter Heuer, die Bedeutung des Dialogs zwischen Naturwissenschaftlern und Philosophen hervorgehoben.

  16. A good way to die.

    Science.gov (United States)

    Trueland, Jennifer

    2016-03-23

    An end of life care service is providing joined-up care for patients. Care co-ordinators arrange packages of care so patients can die in the place of their choice – often at home. The result is high satisfaction rates among patients, families and staff.

  17. B-type natriuretic peptide (BNP serum levels in rats after forced repeated swimming stress

    Directory of Open Access Journals (Sweden)

    Almira Hadžovic-Džuvo

    2011-02-01

    Full Text Available Aim To estimate the effects of forced repeated swimming stress on BNP serum levels in rats. Methods Adult male Wistar rats weighting between 280-330 g were divided into two groups: control group (n =8 and stress group (n =8. Rats in the stress group were exposed to forced swimming stress daily, for 7 days. The rats were forced to swim in plastic tanks (90 cm wide, 120 cm deep containing tap water (temperature ca. 25°C. The depth of water was 40 cm. Duration of each swimming session progressively increased from 10 minutes on the irst day to 40 minutes on days 6 and 7. Rats were sacriiced and blood was drawn from abdominal aorta for BNP analysis immediately after the last swimming session. B-type natriuretic serum level was determined by ELISA method using RAT BNP-32 kit (Phoenix Pharmaceutical Inc.. Results There was no statistically signiicant difference between mean BNP serum level in the stress group after the swimming period (0.81±0.14 ng/ml as compared to the unstressed group of rats (0.8 ±0.08ng/ml. After the swimming period mean body weight slightly decreased in the stress group in comparison with values before stress period (296.3 g vs.272.8 g, but this difference was not statistically signiicant. The stress period had no inluence on food intake in the stress rat group. Conclusion The workload consisting of 40-minutes long swimming session is not suficient to provoke BNP release from myocardium in rats.

  18. Hepatocellular carcinoma with chronic B-type hepatitis complicated by autoimmune hemolytic anemia: A case report

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    A 57-year-old man consulted a local hospital because of a persistent slight fever. At the age of 37 years he was diagnosed having B-type hepatitis, but left the liver dysfunction untreated. Twenty years later, he was diagnosed having chronic hepatitis B, hepatocellular carcinoma (HCC) and macrocytic anemia, and referred to our hospital for further investigation. A HCC with a maximum diameter of 5.2 cm was detected in segment 8. Results of blood tests included 1.8 mg/dL serum total bilirubin, 0.9 mg/dL bilirubin, less than 10 mg/dL haptoglobin, 7.9 g/dL hemoglobin, 130 fL MCV, and 14.5% reticulocytes. A bone marrow sample showed erythroid hyperplasia. The direct Coombs test gave a positive result. We diagnosed the anemia as autoimmmune hemolytic anemia (AIHA), for which prednisolone could not be administered due to positivity for HBsAg and HBeAg. After preparation of washed blood cells for later transfusion, the patient underwent systematic resection of segment 8. The cut surface of the resected specimen demonstrated an encapsulated yellow-brownish tumor measuring 52 mm × 40 mmwhich was diagnosed pathologicaly as moderately differentiated HCC. On the 9th postoperative day, the patient's temperature rose to 38℃, and exacerbated hemolysis was observed. The maximum total bilirubin value was 5.8 mg/dL and minimum hemoglobin level was 4.6 g/dL. He tolerated this period without blood transfusion. Currently he is being followed up as an outpatient, and shows no signs of HCC recurrence or symptoms of anemia. AIHA associated with HBV infection has been described in only three previous cases, and the present case is the first in which surgery was performed for accompanying HCC.

  19. Die betekenis van die bepalings van die 1996 Grondwet: Die aanhef en hoofstuk 1

    Directory of Open Access Journals (Sweden)

    F Venter

    1998-11-01

    Full Text Available The Preamble and Chapter 1 This contribution is intended to be the first installment of a systematic interpretation of the Constitution of the Republic of South Africa 1996.Due to the foundational and repetitive reference in the text to values, regard must constantly be had to those values when this Constitution is interpreted.Even though the preamble does not contain positive norms, is an important interpretive source of the foundations of the Constitution. An important deviation from the preamble of the 1993 Constitution, is that the term Rechtsstaat ("constitutional state" is not employed. The introduction of this notion in South African law and its meaning in general is described. With reference to relevant dicta in recent constitutional cases, the Constitutional Principles in terms of which the 1996 Constitution was formulated and the text of the Constitution itself, it is argued that this is essentially a Rechtsstaat Constitution, but that the divergence in the range of constitutional values creates the danger of the constitutional state floundering in the waters of the social state.Section 1, being the foundational provision, is not unamendable, but it is very tightly entrenched. The most profound values of the Constitution are set out in this compact formulation. The question is inevitably raised whether, where values have to compete for precedence in concrete circumstances, a hierarchy of values must be construed. An analysis of section 1 in the context of other relevant provisions of the Constitution reveals that human dignity is the primary nuclear value of the Constitution, supported by equality and freedom. Democracy, supremacy of the Constitution and the rule of law are structural and procedural values of the Constitution subordinate to the nuclear values and non-racialism and non-sexism are derived values.How it is possible for a constitution to be superior law, as section 2 provides regarding the 1996 Constitution, is analysed

  20. Die spel van assosiasies in en om 'Die verlossing van die beeld' van Breyten Breytenbach

    Directory of Open Access Journals (Sweden)

    P.A. du Toit

    2005-07-01

    Full Text Available The play of association in and around 'The liberation of the image' by Breyten Breytenbach This analysis focuses on the conjunction of memory and imagination, which is an important impulse in, and key to, Breytenbach’s work. The play with language and with associations, the foregrounding, in the short story, “Die verlossing van die beeld” (Breytenbach, 1983 with its metafictional title and apparently divergent motifs (rain/water, watch, onion, the death and burial of a grandfather acts, as it were, as an invitation to the reader to become a co-player. The reader ventures on a search for traces, intertextual links within the Breytenbach oeuvre and for already acknowledged influences such as Surrealism (which in turn casts some light on the strange title of the story and the Eastern philosophies such as Zen and the even older Taoism. The analysis also takes into account the context in which “Mouroir” was written, namely Breytenbach’s term in prison (1975-1982. Seeing that the writer had to hand in his manuscripts to the jail authorities regularly, he might have decided, consciously or by intuition, to hide some thoughts and feelings behind a screen or a mask, in, for example in “Die verlossing van die beeld”, a lighter tone and irony.

  1. Influence of operation factors on brittle fracture initiation and critical local normal stress in SE(B) type specimens of VVER reactor pressure vessel steels

    Science.gov (United States)

    Kuleshova, E. A.; Erak, A. D.; Kiselev, A. S.; Bubyakin, S. A.; Bandura, A. P.

    2015-12-01

    A complex of mechanical tests and fractographic studies of VVER-1000 RPV SE(B) type surveillance specimens was carried out: the brittle fracture origins were revealed (non-metallic inclusions and structural boundaries) and the correlation between fracture toughness parameters (CTOD) and fracture surface parameters (CID) was established. A computational and experimental method of the critical local normal stress determination for different origin types was developed. The values of the critical local normal stress for the structural boundary origin type both for base and weld metal after thermal exposure and neutron irradiation are lower than that for initial state due to the lower cohesive strength of grain boundaries as a result of phosphorus segregation.

  2. Die aard en problematiek van vertaling

    Directory of Open Access Journals (Sweden)

    J. Swanepoel

    1980-05-01

    Full Text Available George Steiner (1975 se onlangse werk oor vertaling dra die treffende titel: After Babel. Dit is met hierdie dilemma wat die mens in sy na-babelse bestaan in sy strewe na sinvolle kommunikasie te kampe het: die bestaan van ’n magdom van tale wat geen individu, hoe begaafd ookal, eers kan droom om te beheers nie. Vandaar die strewe na die totstandbrenging van ’n eenvoudige en universele wereldtaal, Esperanto, of — meer algemeen — die behoefte aan vertaling. Maar vertaling is nie net ’n dilemma nie, dit is ook ’n uitdaging.

  3. Die Felsfassadengräber von Kyrene

    OpenAIRE

    Greve, Anika

    2006-01-01

    Die griechische Kolonie Kyrene wurde im letzten Drittel des 7. Jhs. v. Chr. einige Kilometer vom Mittelmeer entfernt im libyschen Innenland gegründet. Die Siedler waren dorische Griechen aus Thera im Süden der Kykladen. Nicht nur die erhaltenen innerstädtischen Gebäude zeugen von einem einstigen Wohlstand, auch die Nekropole nahm im Laufe der Zeit gewaltige Ausmaße mit aufwendig gestalteten Grabanlagen an, die sich rund um die urbane Bebauung entlang der Ausfallstraßen ausbreitete. Viele Ruhe...

  4. Die impak van tutoriale op die wiskundeprestasie van eerstejaarstudente

    Directory of Open Access Journals (Sweden)

    J. G. Maree

    2004-09-01

    Full Text Available

    Studente uit histories-agtergeblewe gemeenskappe in Suid-Afrika onderpresteer dikwels in wiskunde vanweë ’n verskeidenheid faktore. Aksienavorsing wat aan die (voormalige Technikon Noord-Gauteng uitgevoer is, om ondersoek in te stel na wyses waarop hierdie studente se wiskundeprestasie verbeter kan word, het die implementering van ’n tutoriaalstelsel behels. Kwantitatiewe en kwalitatiewe data is deur middel van ’n verskeidenheid instrumente ingesamel. Die resultate het sekere tendense in tersiêre wiskundeonderrig, wat in ’n tweede of derde taal geskied, uitgewys.

    Abstract

    The impact of tutorials on achievement in mathematics of first year students

    Historically disadvantaged students in South Africa often underachieve in mathematics due to a number of factors. Action research that was conducted at the (former Technikon Northern Gauteng to investigate ways in which these students’ achievements in mathematics could be improved comprised the implementation of tutorial sessions. Quantitative and qualitative data were gathered by means of a variety of instruments. The results revealed certain trends in tertiary mathematics education where learning takes place in a second or third language.

  5. Die Wissensgesellschaft und die Bildung des Subjekts - ein Widerspruch?

    Directory of Open Access Journals (Sweden)

    Sebastian Hacke

    2009-05-01

    Full Text Available Der Beitrag untersucht, inwiefern sich medienpädagogisch relevante Diskrepanzen zwischen dem Diskurs der Wissensgesellschaft und jugendlichem Medienhandeln nachzeichnen lassen. Dazu werden zunächst einige Aspekte des Konstrukts Wissensgesellschaft skizziert, das in seiner gegenwärtig populären Form ins Fahrwasser an volkswirtschaftlichen Verwertungskalkülen orientierter Denkformen geraten ist. Dies wird in Bezug auf die sich daran gekoppelte Programmatik von Kompetenz diskutiert, welche den «homo oeconomicus» beschwört und sich darin konträr zu klassisch bildungstheoretischen Kategorien verhält. Weitergeführt werden diese Überlegungen anhand der Problematisierung des Medienkompetenztheorems, das sich bis heute damit schwer tut, sich von der Vereinnahmung durch zweckrationale und restringierende Tendenzen zu befreien. Argumentiert wird, dass mit Medienkompetenz zu wenig einer milieuspezifischen Differenzierung Rechnung getragen werden kann, die eine wichtige Prämisse für eine soziale Ungleichheiten ernst nehmende Medienpädagogik ist. Als eine Alternative diskutieren wir, inwieweit sich hier praxeologische Perspektiven zum Verständnis jugendlichen Handelns anbieten. Der Beitrag mündet in einige medienpädagogisch fruchtbare Ideen, in deren Zentrum eine reflexivere, stärker am Habitus von Jugendlichen orientierte Praxis steht.

  6. Modelling die filling with charged particles using DEM/CFD

    Institute of Scientific and Technical Information of China (English)

    Emmanuel Nkem Nwose; Chunlei Pei; Chuan-Yu Wu

    2012-01-01

    The effects of electrostatic charge on powder flow behaviour during die filling in a vacuum and in air were analysed using a coupled discrete element method and computational fluid dynamics (DEM/CFD) code,in which long range electrostatic interactions were implemented.The present 2D simulations revealed that both electrostatic charge and the presence of air can affect the powder flow behaviour during die filling.It was found that the electrostatic charge inhibited the flow of powders into the die and induced a loose packing structure.At the same filling speed,increasing the electrostatic charge led to a decrease in the fill ratio which quantifies the volumetric occupancy of powder in the die.In addition,increasing the shoe speed caused a further decrease in the fill ratio,which was characterised using the concept of critical filling speed.When the electrostatic charge was low,the air/particle interaction was strong so that a lower critical filling speed was obtained for die filling in air than in a vacuum.With high electrostatic charge,the electrostatic interactions became dominant.Consequently,similar fill ratio and critical filling speed were obtained for die filling in air and in a vacuum.

  7. Will sacubitril-valsartan diminish the clinical utility of B-type natriuretic peptide testing in acute cardiac care?

    DEFF Research Database (Denmark)

    Mair, Johannes; Lindahl, Bertil; Giannitsis, Evangelos;

    2016-01-01

    Since the approval of sacubitril-valsartan for the treatment of chronic heart failure with reduced ejection fraction, a commonly raised suspicion is that a wider clinical use of this new drug may diminish the clinical utility of B-type natriuretic peptide testing as sacubitril may interfere with B...

  8. Cardiac effects of 3 months treatment of acromegaly evaluated by magnetic resonance imaging and B-type natriuretic peptides

    DEFF Research Database (Denmark)

    Andreassen, Mikkel; Faber, Jens Oscar; Kjær, Andreas;

    2010-01-01

    Long-term treatment of acromegaly prevents aggravation and reverses associated heart disease. A previous study has shown a temporary increase in serum levels of the N-terminal fraction of pro B-type natriuretic peptide (NT-proBNP) suggesting an initial decline in cardiac function when treatment...

  9. Strategies toward the Total Synthesis of Calyciphylline B-type Alkaloids: A Computational Perspective Aided by DFT Analysis.

    Science.gov (United States)

    Chattopadhyay, Amit Kumar; Berger, Gilles; Hanessian, Stephen

    2016-06-17

    Herein we describe synthetic efforts toward the total synthesis of calyciphylline B-type alkaloids. In the process, we disclose a detailed DFT study of equilibrium geometries and transition states that explains the stereochemical outcome during the formation of critical intermediates. X-ray crystallographic analysis reveals interesting conformational features in the naturally occurring deoxycalyciphylline B and its synthetic congeners.

  10. Dying or living?: The double bind.

    Science.gov (United States)

    Longhofer, J

    1980-06-01

    Describing the behaviors of terminally ill patients, their families and those charged with their care has received considerable attention during the past decade. This study of comprehensive cancer treatment and research facility indicates that the prevailing theory is limited to explanation at the intra-psychic level. In her work with hundreds of terminal cases, Dr. Elizabeth Kubler-Ross found that patients typically progress through five stages: 1) denial, 2) anger, 3) bargaining, 4) depression, and 5) acceptance. She concludes that the majority of her patients die in a stage of acceptance--a state of equanimity. Recently, scholars have claimed that this five stage scheme has limited applicability and may in fact contribute to the formalization of a dying person's behavior. This preliminary report proposes that the stage theory, if it has any descriptive validity, becomes meaningful only when used to describe behaviors occurring among patients, families, and medical practitioners. A plausible explanation of these behaviors is accomplished by examination of communication patterns containing the structure of paradox or double bind. Patients are forced to perceive realities about their physical conditions not as they appear to them, but as they are defined by those in their environment. This paper explores these communication patterns in relation to the structure of social relationships and the specific contents of messages being transmitted and received.

  11. Factors Associated with Serum B-Type Natriuretic Peptide in Infants with Single Ventricles

    Science.gov (United States)

    Butts, Ryan J.; Zak, Victor; Hsu, Daphne; Cnota, James; Colan, Steven D.; Hehir, David; Kantor, Paul; Levine, Jami C.; Margossian, Renee; Richmond, Marc; Szwast, Anita; Williams, Derek; Williams, Richard; Atz, Andrew M.

    2014-01-01

    Background Data regarding the value of B-type natriuretic peptide measurements (BNP) in infants with single ventricle (SV) physiology are lacking. The objective of this analysis was to describe the changes in BNP in infants with SV physiology before and after superior cavopulmonary connection (SCPC) surgery. Methods BNP levels were measured by a core laboratory pre-SCPC (5.0 ± 1.6 months) and at age 14 months during a multicenter trial of angiotensin converting enzyme inhibition therapy in infants with SV. Multivariable longitudinal analysis was utilized to model the associations between BNP with three sets of grouped variables (echocardiographic, catheterization, growth). Multivariable analysis was performed to assess associations with patient characteristics at both visits. Associations between BNP and neurodevelopmental variables were investigated at the 14 month visit as neurodevelopmental assessment was performed only at this visit. Results BNP was significantly higher before SCPC (n=173) than at 14 months (n=134); median [IQR] 80.8 pg/ml [35–187] v. 34.5 pg/ml [17–67], p 100 pg/ml was present in 72 (42%) subjects pre-SCPC and 21 (16%) at 14 months. In the 117 patients who had BNP at both visits, the median BNP decreased 32 pg/mL [1–79 pg/mL], p<0.01. In longitudinal multivariable analysis, higher BNP were associated with a higher end-systolic volume z-score (p=0.01), greater degree of atrioventricular (AV) valve regurgitation (p<0.01), lower weight z-score (p<0.01), and lower length z-score (p=0.02) In multivariable analyses, higher BNP at 14 months was associated with presence of arrhythmia post-SCPC surgery (p<0.01), prior Norwood procedure (p<0.01), longer length of hospital stay post-SCPC surgery (p=0.04), and lower Bayley Psychomotor Developmental Index (p=0.02). Conclusion BNP decreases in infants with SV from the pre- SCPC visit to 14 months. Higher BNP is associated with increased ventricular dilation in systole, increased AV valve

  12. Skrifberoep in die vorming van etiese uitsprake, Deel 1: ’n Etiese verstaan van die vrou in die Bybel

    Directory of Open Access Journals (Sweden)

    Adriaan L. Rheeder

    2012-11-01

    Full Text Available Na 30 jaar kon die grammaties-historiese metode van Skrifondersoek nie daarin slaag om die etiese probleem van die vrou in die kerklike ampte (en homoseksualiteit in die GKSA op te los nie. Hierdie metode kan na alle waarskynlikheid nie meer as die enigste verklaringsmetode gebruik word nie en moet deur ander uitgangspunte aangevul word. In hierdie artikel word twee hermeneutiese uitgangspunte bespreek wat saam met die grammaties-historiese metode in die vertolking van die Skrif gebruik kan word. Hierdie hermeneutiese uitgangspunte sal gedemonstreer word in ‘n bespreking oor die etiese verstaan van die vrou in die Bybel, spesifiek soos dit op die vrou in kerklike ampte toegepas word. In aansluiting by laasgenoemde twee vertrekpunte word in ’n opvolgartikel ’n verdere drie hermeneutiese vertrekpunte behandel. Die twee hermeneutiese vertrekpunte wat in hierdie artikel behandel word, staan as reëldoelwit en analogie bekend. Die eerste hermeneutiese vertrekpunt gaan uit van die veronderstelling dat die reëldoelwit van ’n teks swaarder weeg as die teks self, terwyl analogie van die veronderstelling uitgaan dat analogie as beredenering ’n aanvaarbare en noodsaaklike vertrekpunt is. Bogenoemde hermeneutiese vertrekpunte (vyf in totaal is op twee aannames gegrond. Ten eerste word aanvaar dat die Bybel, alhoewel ’n goddelike boek, ’n besliste kreatuurlike kant het wat in die vertolking daarvan in ag geneem moet word. Tweedens word geredeneer dat die Skrif nie ’n  teologiese boek is nie, wat beteken dat gelowiges in etiese sake waaroor daar twee verstaansmoontlikhede bestaan, die reg gegun moet word om self die Skrif te vertolk. Daar word tot die  gevolgtrekking gekom dat ’n etiese verstaan van die vrou daartoe moet lei dat die vrou as gelykwaardig aan die man beskou en behandel moet word, met die gevolg dat die vrou tot alle ampte in die kerk toegelaat moet word.Appeal to Scripture in the formation of ethical judgments, Part 1: An

  13. Comparative studies of vertebrate scavenger receptor class B type 1: a high-density lipoprotein binding protein

    Directory of Open Access Journals (Sweden)

    Holmes RS

    2012-06-01

    Full Text Available Roger S Holmes,1,2 Laura A Cox11Department of Genetics and Southwest National Primate Research Center, Texas Biomedical Research Institute, San Antonio, TX, USA; 2School of Biomolecular and Physical Sciences, Griffith University, Nathan, Queensland, AustraliaAbstract: Scavenger receptor class B type 1 protein (SCARB1 plays an essential role in cholesterol homeostasis and functions in binding high density lipoprotein cholesterol (HDL in liver and other tissues of the body. SCARB1 also functions in lymphocyte homeostasis and in the uptake of hepatitis C virus (HCV by the liver. A genetic deficiency of this protein results in autoimmune disorders and significant changes in blood cholesterol phenotype. Comparative SCARB1 amino acid sequences and structures and SCARB1 gene locations were examined using data from several vertebrate genome projects. Vertebrate SCARB1 sequences shared 50%–99% identity as compared with 28%–31% sequence identities with other CD36-like superfamily members, ie, SCARB2 and SCARB3 (also called CD36. At least eight N-glycosylation sites were conserved among most of the vertebrate SCARB1 proteins examined. Sequence alignments, key amino acid residues, and conserved predicted secondary structures were also studied, including: cytoplasmic, transmembrane, and exoplasmic sequences; conserved N-terminal and C-terminal transmembrane glycines which participate in oligomer formation; conserved cystine disulfides and a free SH residue which participates in lipid transport; carboxyl terminal PDZ-binding domain sequences (Ala507-Arg/Lys508-Leu509; and 30 conserved proline and 18 conserved glycine residues, which may contribute to short loop formation within the exoplasmic HDL-binding sequence. Vertebrate SCARB1 genes usually contained 12 coding exons. The human SCARB1 gene contained CpG islands, micro RNA binding sites, and several transcription factor binding sites (including PPARG which may contribute to the high level (13.7 times

  14. Psychotherapy of the dying patient.

    Science.gov (United States)

    Stedeford, A

    1979-07-01

    The psychotherapeutic aspects of the care of the 49 terminally ill patients described in the preceeding paper are discussed. Their differing ways of coping with the stress of dying and the range of psychotherapeutic strategies used in treatment are described. The work suggests that the therapist's use of psychological insights can improve his understanding of the emotional pain of terminal illness, and well-aimed psychotherapy can contribute to its relief.

  15. Killing, letting die and euthanasia.

    Science.gov (United States)

    Husak, D N

    1979-12-01

    Medical ethicists debate whether or not the moral assessment of cases of euthanasia should depend on whether the patient is 'killed' or 'allowed to die'. The usual presupposition is that a clear distinction between killing and letting die can be drawn so that this substantive question is not begged. I contend that the categorisation of cases of instances of killing rather than as instances of letting die depends in part on a prior moral assessment of the case. Hence is it trivially rather than substantively true that the distinction has moral significance. But even if a morally neutral (ie non-question begging) distinction could be drawn, its application to the euthanasia controversy is problematic. I illustrate the difficulties of employing this distinction to reach moral conclusions by critically discussing Philippa Foot's recent treatment of euthanasia. I conclude that even if an act of euthanasia is an instance of killing, and there exists a prima facie moral duty not to kill, and no more stringent duty overrides this duty, one still cannot determine such an act to be morally impermissible.

  16. Ethnographische Filme und die Darstellung von Frauen

    Directory of Open Access Journals (Sweden)

    Judith Keilbach

    2002-03-01

    Full Text Available In dieser Filmographie werden ethnographische und koloniale Filme aus dem Bestand des Nederlands Filmmuseum kommentiert, die für die Frage nach der Darstellung von Frauen und Geschlechterverhältnissen von Interesse sind.

  17. Die ausbildung von wertbedeutungen im schuljugendalter*

    Directory of Open Access Journals (Sweden)

    Siegfried Heusinger

    1978-12-01

    Full Text Available Die folgenden Darlegungen stützen sich auf Untersuchungsergebnisse des Verlassers zur Sprachentwicklung in der Ontogenese. Angeregt wurde die UnterSuchung durch die besonders in den letzten Jahren in mehreren Ländern verstärkt erhobenen Forderungen, nicht nur die Sprache des Klein­ kindes, sondern vornehmlich den Entwicklungsstand der Schülersprache auf den einzelnen Klassenstufen zu erforschen und den Prozeß der Sprachentwicklung des Schülers genauer zu bestimmen. Die Forderungen sind (so z. B. in der DDR durch das Bestreben motiviert, weitere wissenschaftliche Voraussetzungen für die Verbesserung der muttersprachlichen Bildung und Erzliehung zu schaffen. Es geht also vor allem um Bedürfnisse des Muttersprachunterrichts, die aus der gesellschaftlichen Bedeutung der Sprache überhaupt und den steigenden Anforderungen an die gesellschaftliche Kommunikation insbesondere erwachsen.

  18. [Die Gründung...] / Anders Henriksson

    Index Scriptorium Estoniae

    Henriksson, Anders

    2004-01-01

    Rets.: Karsten Brüggemann. Die Gründung der Republik Estland und das Ende des "Einen und unteilbaren Russland" : die Petrograder Front des Russischen Bürgerkrieges, 1918-1920. Wiesbaden : Harrassowitz, 2002

  19. Aanspreekvorme in die poësie

    Directory of Open Access Journals (Sweden)

    D. M. Wybenga

    1982-05-01

    Full Text Available By die deurblaai van die Groot Verseboek (hierna GV is dit opvallend dat daar so baie keer van aanspreekvorme in gedigte gebruik gemaak word. Van die heel eerste gedig wat daarin opgeneem is, naamlik Klaas Geswind en sy perd (p. 1 tot ’n gedig van die laaste opgenome digter, André le Roux, (struisbaai-blues, p. 506, gebruik digters telkens hierdie taalmiddel om een of ander spesifieke effek te verkry.

  20. Die tätigkeitstheoretische Perspektive

    OpenAIRE

    Stroh, Wolfgang Martin

    2012-01-01

    Die Perspektive, die der Autor entwickelt, ist die der dialektischen Tätigkeitstheorie. Gemäß dieser Theorie ist Musik eine spezifische Art der Aneignung von Wirklichkeit. SchülerInnen sollten im Musikunterricht lernen, bewusst, selbstbestimmt und sozial zu handeln, wenn sie sich durch Musizieren Wirklichkeit aneignen. Wenn SchülerInnen im Unterricht Musik machen, müssen sie sich daher auch des kulturellen Kontextes bewusst sein, dem die Musik entstammt. Sie sollten auch selbstbestimmt handel...

  1. Straatsburg en artikel 2 van die dordtse kerkorde

    Directory of Open Access Journals (Sweden)

    L. F. Schulze

    1966-03-01

    Full Text Available In art. 2 K.O. word daar vier soorte kerklike dienste on dcrskei, nl. „dié van die bedienaars van die Woord, dié van die professore aan die teologiese skool, die van die ouderlinge, en dié van die diakens”.

  2. Eenheid en differensiasie in die onderwys

    Directory of Open Access Journals (Sweden)

    B. C. Schutte

    1962-03-01

    Full Text Available Hierdie tenia van die interíakultêre lesings sny in werkliklieid oor alle fakulteite lieen en is ’11 probleem wal by elke dissipliiie ontstaan, sonder twyfel by almal wat met die mens en met levve te doen het, maar ook by die fisiese wetenskappe waar met die lewelosc skepping gewerk word. Waar ons in ons land en veral in Transvaal deesdae voortdurend te doen het met differensiasie in die onderwys, met A-, B- en C-bane, is hierdie beginsel van eenheid en verskeidenheid, van eeridersheid en ver- skillendbeid, van integrasie en differensiasie, van verdeelde beheer in die onderwys en van ’11 eenheidsheleid en -beheer, van nasionale en inter- nasionale onderwys, van verskillende skooltipes en van komprehensiewe skole e.d.m., voortdurend in die nuus. Saam met die eenheid en differen­ siasie in die volkewêreld van Afrika, is die probleem in die onderwys seker die popnlêrste; dis byna reeds gemeen|laas.

  3. Die Prozessionsspinner Mitteleuropas - Ein Überblick

    Directory of Open Access Journals (Sweden)

    Bräsicke, Nadine

    2013-01-01

    Full Text Available Die Auswirkungen des Klimawandels lassen sich bereits auch in Deutschland beobachten. Dabei werden die Waldökosysteme in besonderer Weise betroffen. Waldstandorte sind stärker trockenen Bedingungen ausgesetzt, die zusammen mit höheren Vegetationszeittemperaturen eine erhöhte Stressanfälligkeit der Bäume verursachen. Bei den Insekten beeinflusst eine erhöhte Temperatur u. a. die Entwicklungsdauer, die Populationsdichte und die Verwertbarkeit der Wirtspflanzen als Nahrung (BMLFUW 2003, Petercord et al. 2008. Es ist zu erwarten, dass die Wachstumsrate und die Entwicklung der Insektenarten beeinflusst wird (Netherer & Schopf 2009, die aufgrund eines relativ hohen Populationswachstums und hoher Mobilität durch Migration oder Adaption auf veränderte Klimabedingungen rascher reagieren (Harrington et al. 2001. Bei einigen Schädlingen zeichnet sich eine solche Entwicklung bereits ab. Unter ihnen befinden sich humanpathogene Arten, die zunehmend auch zum Forstschädling avancieren und die Waldbestände existenziell gefährden. Der Eichenprozessionsspinner gehört zu diesen Arten. Ebenfalls relevant für Mitteleuropa sind Thaumetopoea pinivora und Th. pityocampa, die mit dem Beitrag näher betrachtet werden.

  4. Die kuns van Maggie Laubser . 1

    Directory of Open Access Journals (Sweden)

    G. Dekker

    1953-03-01

    Full Text Available Dis vir my ’n groot genoeë om iets te mag sê oor die kuns van 'n vrouw at jare lank haar pad eensaam gegaan het, trou gebly het aan haar kunstenaarsoortuiging en nie toegegee het aan die smaak van die publiek, geenkompromieë daarmee gesluit het terwille van populariteit of stoflike gewin nie.

  5. Die persoonlikheidseienskappe en bestuurspotensiaal van bestuursgemotiveerde persone

    Directory of Open Access Journals (Sweden)

    A. S. Engelbrecht

    1994-06-01

    Full Text Available The personality traits and managerial potential of managerial motivated persons: In the ligth of criticisms of the psychometric suitability of existing measures of managerial motivation a new scale, the Managerial Motivation Questionnaire (MMQ, was developed. This was done on the basis of a comprehensive study of the literature on managerial motivation and the role-motivation theory of Miner. The MMQ demonstrated adequate internal consistency. The aim of this study is to clarify the construct validity of the MMQ. Significant and positive correlations were found between managerial motivation, overall managerial potential, and nine managerial dimensions. The construct validity of the MMQ was further supported by correlations between sixteen personality traits and managerial motivation. Opsomming In die lig van kritiek teen die psigometriese geskiktheid van bestaande meetinstrumente van bestuursmotivering is 'n nuwe skaal, die Bestuursmotiveringsvraelys (BMV/ ontwikkel. Dit is gedoen op grond van die konseptuele omiyning van bestuursmotivering en die rolmotiveringsteorie van Miner. Die BMV vertoon toereikende interne konsekwentheid. Die doel van hierdie studie is om die konstrukgeldigheid van die BMV verder op te klaar. Beduidend positiewe korrelasies is tussen bestuursmotivering/ globale bestuurspotensiaal en nege bestuursdimensies gevind. Hierbenewens het die korrelasies tussen sestien persoonlikheidseienskappe en bestuursmotivering verdere ondersteunende bewyse gelewer van die konstrukgeldigheid van die BMV.

  6. “Ruik die verderf in die kieliebakke”: Breyten Breytenbach se blik op die lyk

    Directory of Open Access Journals (Sweden)

    M. Crous

    2008-07-01

    Full Text Available “Smell the rot in the armpits”: Breyten Breytenbach’s perspectives on the corpse The purpose of this article is to analyse Breyten Breytenbach’s so-called corpse poem, “bekommernis”, taken from his debut album “die ysterkoei moet sweet” (1964. The theoretical point of departure is the theories of Kristeva, in particular her essay on abjection. Not only does the article focus on Breytenbach’s portrayal of the abject, but also shows to what extent his use of language describing death, decay and the cadaver illustrates what Kristeva calls “a revolution in poetic language”. Given the fact that the poem is situated in a Zen Buddhist context, the Zen philosophy on death and dying is also taken into consideration when analysing aspects such as the dissolution of the ego, the bardos of death, et cetera.

  7. Missionale kerkwees en die elektroniese sosiale media

    Directory of Open Access Journals (Sweden)

    Martin J. Lazenby

    2014-03-01

    Full Text Available Die geweldige toename in die benutting van die sosiale media as interaktiewe kommunikasiemiddel wêreldwyd, bied aan die Christelike kerk groot missionale geleenthede, maar stel ook groot uitdagings en eise. Hierdie geleentheid moet benut word om missionaal ’n verskil ten gunste van God se koninkryk te maak. Die inhoud en die kommunikasiestyl kom onder die vergrootglas. Hierdie artikel poog om ’n paar bybels-etiese beginsels aan te dui wat as basis vir die missionale styl van kommunikasie moet dien. As uitgangspunt word die Bybel as die Woord van God gebruik. Daar word geredeneer dat die moreel-etiese beginsels wat in die Bybel aan die gelowige voorgeskryf word, van die grootste belang is om gestalte te gee aan die koninkryk van God in hierdie wêreld wanneer via die sosiale media op horisontale vlak met mense gekommunikeer word. Dit gaan dus vir die gelowige nooit net om humanistiese, sosiale kommunikasie nie, maar altyd dat die beeld van God in hierdie wêreld geëer en sy koninkryk daardeur uitgebou word. Vir die Christen-gelowige gaan dit nooit om die mens nie, maar altyd om God se eer en die manifestasie van sy koninkryk.Being a missional church and the social media. The tremendous increase in using the social media as interactive communication medium worldwide creates the opportunity for the Christian church to make a missional difference in favour of God’s kingdom on earth. It also brings great challenges with it. This means that the way communication via the mass social media is done, becomes of the utmost importance. The content as well as the manner in which the communication is conducted must be considered. This article aims at providing certain basic biblical-ethical principles for communicating in the mass social media that will serve the missional calling of the church. The point of departure is the Word of God. The basic focus of the argument is that the moral-ethical principles given to the believer in the Bible are of the

  8. Discovery of a magnetic field in the early B-type star σ Lupi

    Science.gov (United States)

    Henrichs, H. F.; Kolenberg, K.; Plaggenborg, B.; Marsden, S. C.; Waite, I. A.; Landstreet, J. D.; Wade, G. A.; Grunhut, J. H.; Oksala, M. E.

    2012-09-01

    Context. Magnetic early B-type stars are rare. Indirect indicators are needed to identify them before investing in time-intensive spectropolarimetric observations. Aims: We use the strongest indirect indicator of a magnetic field in B stars, which is periodic variability of ultraviolet (UV) stellar wind lines occurring symmetric about the approximate rest wavelength. Our aim is to identify probable magnetic candidates which would become targets for follow-up spectropolarimetry to search for a magnetic field. Methods: From the UV wind line variability the B1/B2V star σ Lupi emerged as a new magnetic candidate star. AAT spectropolarimetric measurements with SEMPOL were obtained. The longitudinal component of the magnetic field integrated over the visible surface of the star was determined with the least-squares deconvolution method. Results: The UV line variations of σ Lupi are similar to what is known in magnetic B stars, but no periodicity could be determined. We detected a varying longitudinal magnetic field with amplitude of about 100 G with error bars of typically 20 G, which supports an oblique magnetic-rotator configuration. The equivalent width variations of the UV lines, the magnetic and the optical-line variations are consistent with the photometric period of 3.02 d, which we identify with the rotation period of the star. Additional observations with ESPaDOnS attached to the CFHT confirmed this discovery, and allowed the determination of a precise magnetic period. Analysis revealed that σ Lupi is a helium-strong star, with an enhanced nitrogen abundance and an underabundance of carbon, and has a chemically spotted surface. Conclusions.σ Lupi is a magnetic oblique rotator, and is a He-strong star. Like in other magnetic B stars the UV wind emission appears to originate close to the magnetic equatorial plane, with maximum emission occurring when a magnetic pole points towards the Earth. The 3.01972 ± 0.00043 d magnetic rotation period is consistent with

  9. Artikel 2 van die Nederlandse Geloofsbelydenis as geloofsvooronderstelling in die gesprek tussen wetenskap en geloof

    Directory of Open Access Journals (Sweden)

    Jan A. Erasmus

    2014-03-01

    Full Text Available Artikel 2 van die Nederlandse Geloofsbelydenis bely dat God deur twee middele geken word, te wete deur middel van die skepping, onderhouding en regering van die wêreld (waaronder die wetenskap en deur die heilige en goddelike Woord (die Bybel. Hierdie belydenis is van groot belang vir die gesprek tussen Wetenskap en Teologie. In hierdie artikel word gepoog om die verskille, maar ook die ooreenkomste tussen hierdie twee middele van openbaring uit te lig, elkeen tot sy reg te laat kom, maar hulle ook in balans met mekaar te stel. Die wyse waarop te werk gegaan word, is die volgende: eers word gestel wat vooronderstellings is, asook die plek wat vooronderstellings in die beoefening van wetenskap sowel as geloof inneem. Daarna word nagevors watter perspektiewe artikel 2 van die Nederlandse Geloofsbelydenis as geloofsvooronderstelling vir die wetenskaps- en teologiebeoefening respektiewelik bied. Hieruit word ’n aantal gevolgtrekkings gemaak wat kan help om die problematiek in die wetenskap-geloofsgesprek op te los. Die kernbevinding van hierdie artikel is die volgende: Vanweë die verskil in die aard en die doel tussen Bybelfeite en wetenskaplike navorsingsresultate kan en sal klaarblyklike harmonieprobleme tussen die Skrif en die wetenskap ontstaan. Hierdie is egter slegs klaarblyklike probleme, omdat ’n verrekening van die verskil in die aard en die bedoeling van die wetenskapresultate en die Bybelfeite hierdie probleem sal oplos.Article 2 of the Belgic Confession as faith presupposition in the science-faith debate. Article 2 of the Belgic Confession confesses that God can be known by two means: firstly by studying the creation, preservation and government of the universe (i.e. science and secondly by studying the Word of God (the Bible. This confession is very important for the discussion between science and faith. In this article the similarities, but also the differences between these two means of revelation are researched. The aim is to

  10. Die rol van kapitaal in die ekonomiese groei en ontwikkeling van onderontwikkelde gebiede*

    Directory of Open Access Journals (Sweden)

    F. J. du Plessis

    1961-03-01

    Full Text Available In die teorie oor ekonomiese groei speel kapitaal ’n besonder prominente rol. Kapitaal met die daarby behorende tegnologiese ontwikkeling, word beskou as die belangrikste enkele faktor verantwoordelik vir die bereiking en instandhouding van ’n „ten voile ontwikkelde” volkshuishouding.

  11. Die persoonlikheidsoriëntasieprofiel van die saluto-genies-funksionerende mens

    Directory of Open Access Journals (Sweden)

    A. M. Viviers

    1999-06-01

    Full Text Available The aim of this research is to integrate the theoretical personality profile of the salutogenic functioning person, drawn from the literature on Salutogenesis, with the personality orientation profile of the optimal functioning employee, as documented in the literature on Organisational and Personnel psychology. The integration is done according to intra- (cognitive affective, conative and physical characteristics and interpersonal characteristics. The two profiles could be integrated, according to these characteristics, into a profile of the salutogenic functioning person who handles life and work stressors effectively and functions optimally in his daily existence. This integration shows a theoretical relationship between the two constructs and confirms a meaningful relationship found in empirical research. Opsomming Die doel van hierdie navorsing is om die teoretiese persoonlikheidsprofiel van die salutogenies-funksionerende mens vanuit die literatuur oor Salutogenese met die persoonlikheidsorientasieprofiel van die optimaal- funksionerende werknemer soos deur die Organisasie- en Personeelsielkunde-literatuur voorgehou, te integreer. Die integrasie word volgens intra- (kognitiewe, affektiewe, konatiewe en fisiese eienskappe en interpersoonlike eienskappe gedoen. Daar is bevind dat die twee profiele volgens die eienskappe geïntegreer kan word tot 'n profiel van die salutogenies-funksionerende mens wat die stressors van die lewe en werk effektief kan hanteer en sodoende optimaal in sy daaglikse bestaan funksioneer. Die integrasie bevind 'n teoretiese verband tussen die twee konstrukte. Dit bevestig empiriese navorsing wat 'n beduidende verband tussen die twee konstrukte bevind het.

  12. Thermal Fatigue of Die-Casting Dies: An Overview

    Directory of Open Access Journals (Sweden)

    Abdulhadi Hassan A.

    2016-01-01

    Full Text Available Coupled studies by experimental and numerical simulations are necessary for an increased understanding of the material behaviour as related to the interaction between the thermal and mechanical conditions. This paper focus on the mechanisms of thermal fatigue in the failure of dies and cores used in the die casting of aluminum alloys. The thermal fatigue resistance is expressed by two crack parameters which are the average maximum crack and the average cracked area. Samples of various types of H13 steel were compared with a standard H13 steel by testing under identical thermal fatigue cycles. To determine the thermal constraint developed in the sample during the test, a finite difference technique was used to obtain the temperature distribution, based on temperature measurements at the boundaries. The resulting stresses and strains were computed, and the strain calculated at the edge or weakest point of the sample was used to correlate the number of cycles to crack initiation. As the strain at the edge increased, the number of cycles to failure decreased. The influence of various factors on thermal fatigue behavior was studied including austenitizing temperature, surface condition, stress relieving, casting, vacuum melting, and resulfurization. The thermal fatigue resistance improved as the austenitizing temperature increased from 1750 to 2050ºF.

  13. Anforderungen an die Detektoren von DIVA.

    Science.gov (United States)

    Wagner, S. J.

    Neben dem optischen System sind die Detektoren in der Fokalebene die wichtigste Komponente des Instruments eines astrometrischen Minisatelliten. Einer möglichst optimalen Auswahl des Detektorsystems und seiner Operationsmodi kommt daher eine entscheidende Bedeutung zu. In diesem Beitrag werden die Anforderungen vorgestellt, die sich zum gegenwärtigen Stand der Planung eines Interferometrie-Minisatelliten für astrometrische und photometrische Untersuchungen ergeben. Sie basieren auf dem grundlegenden Missionskonzept für die DIVA Mission (Bastian et al., 1996) und dem an der Landessternwarte Heidelberg zusammen mit dem ARI Heidelberg und DSS Ottobrunn erarbeiteten optischen Konzept des Instruments.

  14. Die resepsie van die Heidelbergse Kategismus (Sondag 17 en 22 insake die opstanding in die negentiende-eeuse Nederduitse Gereformeerde Kerk (Deel 1

    Directory of Open Access Journals (Sweden)

    Johannes W. Hofmeyr

    2013-06-01

    Full Text Available Met die 450e herdenking van die Heidelbergse Kategismus (HK as vertrekpunt word in twee artikels gepoog om lig te werp op die plek, die rol en die interpretasie van die opstanding van Jesus Christus uit veral Sondag 17 en 22, spesifiek in die konteks van twee besondere eras in die Nederduitse Gereformeerde (NG Kerk. Na ’n kort bespreking van die Heidelbergse Kategismus , word in hierdie eerste artikel uitgebreid gekyk na die resepsie van die betrokke HK-geloofsartikels in die era van Andrew Murray, spesifiek teen die agtergrond van die negentiende-eeuse liberale teologie in Nederland. In ’n tweede artikel word soortgelyk gekyk na die resepsie van die betrokke HK-geloofsartikels in die NG Kerk na 2000, veral teen die agtergrond van die herverskyning van die liberale teologie in die vorm van die Jesus Seminaar, die Nuwe Hervorming en die aanhangers daarvan se standpunte binne die NG Kerk. Sowel die negentiende-eeuse liberale stryd in die NG Kerk as die stryd rondom die opstanding in die NG Kerk van die eerste dekade van die een-en-twintigste eeu, soos in die tweede artikel duidelik sal blyk, was gekenmerk deur kontekstueelbepaalde uniekhede. Die gemene deler is dat albei deel was van tye van teologiese vrysinnigheid. In die lig van hierdie bespreking, ook ten opsigte van die negentiende eeu, sal tot die gevolgtrekking gekom word dat die NG Kerk, wat sy identiteit as gereformeerde kerk betref, tans waarskynlik in ’n kritieke geloofs- en toekomskrisis verkeer wat kommerwekkende gevolge vir sy Skrifverstaan en getuienis as belydenis en belydende kerk van Jesus Christus en sy toekoms inhou. Alleen ’n duidelike visie, verantwoordelike leierskap en die herontdekking van die kruis en die opstanding as ononderhandelbare heilsgebeure, wat ook deur die HK gehandhaaf word, sal die NG Kerk kan red van ’n snelwentelende afwaartse spiraal. Slegs die pasgenoemde faktore kan ’n herstellende, positiewe en dinamiese oplossing vir hierdie proses bied wat

  15. Genl. Koos De La Rey, die krygsman.

    Directory of Open Access Journals (Sweden)

    J. S. du Plessis

    1959-03-01

    Full Text Available 22 Oktober is die geboortedag van genl. Koos de la Rey, wat van dag tot ons heldeverlede behoort. Vanjaargedenk ons ook op 11 Oktober die uitbreek van die Tweede Vryheidsoorlog, sestig jaar gelede. Daarom wil ek graag by hierdie geleentheid die persoon van Koos de la Rey in herinnering roepen by wyse van hierdie artikel huldebring aan hom wat God aan ons volkgegee het op ’n tydstip toe sulke mannedringend noodsaaklik was; ’n man wat in die ure van dood en benoudheid leidingkon gee; ’n man sonder wie onsvolksgeskiedenis beslis armer sou gewees het. Aangesien hy by uitstek krygsmanen veldheer.

  16. An Integrated Die Casting Design System

    Institute of Scientific and Technical Information of China (English)

    Y; K; Woon; K; S; Lee

    2002-01-01

    Die casting process is one of the prime options for m anufacturing precisely dimensioned, sharply defined metal parts. The design of d ie casting dies comprises several stages and entails a large amount of time. Tra ditionally, the different stages of the die design were not integrated but exist as separate entities. Moreover, recurring modifications or even redesigns are r equired due to the complexity in achieving an accurate initial die design. As a result, die design is usually time-consuming and cos...

  17. Modeling of high temperature- and diffusion-controlled die soldering in aluminum high pressure die casting

    DEFF Research Database (Denmark)

    Domkin, Konstantin; Hattel, Jesper Henri; Thorborg, Jesper

    2009-01-01

    of the die lifetime based on a quantitative analysis of die soldering in the framework of the numerical simulations of the die-casting process. Full 3D simulations of the process, including the filling. solidification, and the die cooling, are carried out using the casting simulation software MAGMAsoft......Soldering of cast alloys to the dies has been a continuing source of die surface damage in the aluminum die-casting industry. To reduce the repair and maintenance costs, an approach to modeling the damage and predicting the die lifetime is required. The aim of the present study is the estimation....... The resulting transient temperature fields on the die surface and in the casting are then post-processed to estimate the die soldering. The present work deals only with the metallurgical/chemical kind of soldering which occurs at high temperatures and involves formation and growth of intermetallic layers...

  18. Cardiac effects of 3 months treatment of acromegaly evaluated by magnetic resonance imaging and B-type natriuretic peptides

    DEFF Research Database (Denmark)

    Andreassen, Mikkel; Faber, Jens; Kjær, Andreas;

    2010-01-01

    of acromegaly is initiated. This was a three months prospective study investigating short-term cardiac effects of treatment in acromegalic patients. Cardiac function was evaluated by the gold standard method cardiac magnetic resonance imaging (CMRI) and circulating levels of B-type natriuretic peptides (BNP......Long-term treatment of acromegaly prevents aggravation and reverses associated heart disease. A previous study has shown a temporary increase in serum levels of the N-terminal fraction of pro B-type natriuretic peptide (NT-proBNP) suggesting an initial decline in cardiac function when treatment...... and NT-proBNP). CMRI was performed at baseline and after 3 months of treatment. Levels of IGF-I, BNP and NT-proBNP were measured after 0, 1, 2 and 3 months. Eight patients (5 males and 3 females, mean age 53 ± 12 years (range 30-70)) and 8 matched healthy control subjects were included. Median IGF-I Z...

  19. Die Welt des Herrn Kuhn

    Science.gov (United States)

    Kern, Daniela

    Eines Morgens erwachte Herr Kuhn fröstelnd und staunte darüber, dass es in seinerWohnung eiskalt war. Dennoch quälte er sich aus seiner kuscheligen Bettdecke heraus und schlurfte ins Bad. "Hoffentlich wird wenigstens das Wasser warm", dachte er sich, als er den Wasserhahn betätigte - aber es kam nicht nur kein warmesWasser, außer einem unheilvollen Gluckser kam gar nichts aus der Leitung. "Dann werde ich wohl mal den Klempner anrufen", sprach er sich leise in den Bart und griff zu seinem Handy - doch das Netz war tot! Herr Kuhn begann nun, sich ernsthaft Sorgen zu machen, "Oje, was ist denn heute nur los? Ist irgendetwas Schlimmes passiert?" Um einen besseren Überblick über die Lage zu bekommen und sich austauschen zu können, brannte er nun förmlich darauf, rauszugehen und zur Arbeit zu fahren. An anderen Tagen, die er frisch geduscht und mit Kaffee und Marmeladen-Brot begann, war er selten so motiviert. So ging er also nun mit leerem Magen aus dem Haus. Hätte er den Versuch unternommen, sein tägliches Marmeladenbrot zuzubereiten, und dafür den Kühlschrank geöffnet, um das Marmeladenglas herauszunehmen, wäre ihm aufgefallen, dass auch die Stromversorgung Störungen unterworfen war, unschön zu erkennen an den ersten grünen, felligen Inseln auf seinem Lieblingskäse.

  20. Was die neuen Frauen wollen

    OpenAIRE

    Wilhelm, Hannah; Meyen, Michael

    2004-01-01

    Seit Mitte der 90er Jahre hat sich eine neue Generation von Frauenzeitschriften auf einem als übersättigt geltenden Markt etabliert. Diese Blätter richten sich an Frauen zwischen 20 und 35 Jahren. Glamour aus dem Condé Nast Verlag scheint die Perfektion dieses neuen Zeitschriftentypus zu sein. Das Magazin im Pocket-Format wurde sofort nach seiner Einführung im Februar 2001 Marktführer im Segment der monatlich erscheinenden Frauenzeitschriften. Der Beitrag geht der Frage nach, wie dieser Erfol...

  1. Simulating a high pressure die casting

    Energy Technology Data Exchange (ETDEWEB)

    Goldak, J.; Zhou, J.; Downey, D.; Aldea, V.; Li, G.; Mocanita, M. [Carleton Univ., Ottawa, Ontario (Canada)

    2000-07-01

    High pressure die casting is simulated for parts with complex geometry such as a large automotive transmission case. The closed die is filled in approximately 40 ms, the casting cools in the closed die for approximately 40s, to open the die, eject the casting and spray the die cavity surface requires another 40s. This 3D cyclic process is simulated using the following coupled composite solvers: the energy equation in the die and in the casting with solidification; filling of the casting by a droplet or a Navier-Stokes solver, and thermal stress analysis of the casting machine, casting and die during the cycle. This thermal analysis can be done for both starting and stopping transients and for the cyclic steady state. The software enables this analysis to be done almost automatically by designers. (author)

  2. Invasive and noninvasive correlations of B-type natriuretic peptide in patients with heart failure due to Chagas cardiomyopathy.

    Science.gov (United States)

    Vilas-Boas, Fábio; Feitosa, Gilson Soares; Soares, Milena B P; Pinho-Filho, Joel Alves; Nascimento, Thais; Barojas, Marcos M; Andrade, Marcus V S; Ribeiro-Dos-Santos, Ricardo; Bocchi, Edimar

    2008-01-01

    Heart failure due to Chagas cardiomyopathy (HFCC) differs from failure with other etiologies because of the occurrence of intense inflammatory infiltrate and right ventricle compromise. This article investigates correlations of B-type natriuretic peptide (BNP) levels with parameters of severity in HFCC. Twenty-eight patients and 8 normal controls underwent heart catheterization and clinical and laboratory analyses. BNP levels were higher in patients with HFCC (PHFCC, irrespective of NYHA class, and that the occurrence of HFCC correlates with severity of disease.

  3. Die effek van intelligensie op die verhouding tussen lokus van kontrole en taakkompleksiteit

    Directory of Open Access Journals (Sweden)

    F. G. de Kock

    1995-06-01

    Full Text Available The effect of intelligence on the relationship between locus of control and task complexity. The aim of the study was to establish the effects of intelligence on the relationship between locus of control and task complexity. These constructs were selected by virtue of their importance in the literature, as well as the lack of empirical research regarding the assumed relationship which exists between them. The Human Sciences Research Council's (HSRC General Scholastic Aptitude Test (ASAT was used for measuring intelligence, Duttweiler's Internal Control Index (ICI was used for determining locus of control and the Raven's Advanced Progressive Matrices (APM was used as a criterion for coping with task complexity. These instruments were administered to 292 subjects to determine whether the relationship between locus of control and task complexity was effected when the effect of intelligence was controlled. The results indicated a significant relationship between locus of control and task complexity, however the relationship was no longer significant after the effect of intelligence was controlled. Opsomming Die doel van die studie was om die effek van intelligensie op die verhouding tussen lokus van kontrole en taak-kompleksiteit te ondersoek. Hierdie konstrukte is gekies na aanleiding van hulle belangrikheid in die literatuur asook die leemte in empiric se navorsing rakende die veronderstelde verband wat tussen hulle bestaan. Die Algemene Skolastiese Aanlegtoets (ASAT van die Raad vir Geesteswetenskaplike Navorsing (RGN is gebruik vir die meting van intelligensie, die Internal Control Index (ICI van Duttweiler is gebruik vir die meting van lokus van kontrole en die Advanced Progressive Matrices (APM van Raven is gebruik as maatstaf vir die bantering van taakkompleksiteit. Die genoemde meetinstrumente is op 292 proefpersone toegepas om te bepaal of die verband tussen lokus van kontrole en taakkompleksiteit geaffekteer word wanneer daar vir die effek

  4. Die invloed van ‘n intensiewe opleidingsprogram op die Kardio Stres-indeks

    Directory of Open Access Journals (Sweden)

    Tammy Claassen

    2012-03-01

    Full Text Available Mense ondervind baie stressors in hul alledaagse lewe, wat ‘n groot uitwerking het op daagliksefunksionering. Kardio Stres-indeks (KSI is ‘n nie-indringende mate van die stres wat die hartervaar. KSI (uitgedruk as ‘n persentasie berekeninge word gebaseer op die duur van die QRSkompleks, hart tempo, ritme en standaardafwyking van die RR-interval (RRSD spesifieke parameters.

  5. THE O- AND B-TYPE STELLAR POPULATION IN W3: BEYOND THE HIGH-DENSITY LAYER

    Energy Technology Data Exchange (ETDEWEB)

    Kiminki, Megan M.; Kim, Jinyoung Serena; Bagley, Micaela B.; Rieke, George H. [Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721 (United States); Sherry, William H., E-mail: mbagley@email.arizona.edu [National Optical Astronomy Observatories, 950 North Cherry Avenue, Tucson, AZ 85719 (United States)

    2015-11-01

    We present the first results from our survey of the star-forming complex W3, combining VRI photometry with multiobject spectroscopy to identify and characterize the high-mass stellar population across the region. With 79 new spectral classifications, we bring the total number of spectroscopically confirmed O- and B-type stars in W3 to 105. We find that the high-mass slope of the mass function in W3 is consistent with a Salpeter IMF, and that the extinction toward the region is best characterized by an R{sub V} of approximately 3.6. B-type stars are found to be more widely dispersed across the W3 giant molecular cloud (GMC) than previously realized: they are not confined to the high-density layer (HDL) created by the expansion of the neighboring W4 H ii region into the GMC. This broader B-type population suggests that star formation in W3 began spontaneously up to 8–10 Myr ago, although at a lower level than the more recent star formation episodes in the HDL. In addition, we describe a method of optimizing sky subtraction for fiber spectra in regions of strong and spatially variable nebular emission.

  6. The O- and B-Type Stellar Population in W3: Beyond the High-Density Layer

    CERN Document Server

    Kiminki, Megan M; Bagley, Micaela B; Sherry, William H; Rieke, George H

    2015-01-01

    We present the first results from our survey of the star-forming complex W3, combining VRI photometry with multiobject spectroscopy to identify and characterize the high-mass stellar population across the region. With 79 new spectral classifications, we bring the total number of spectroscopically-confirmed O- and B-type stars in W3 to 105. We find that the high-mass slope of the mass function in W3 is consistent with a Salpeter IMF, and that the extinction toward the region is best characterized by an Rv of approximately 3.6. B-type stars are found to be more widely dispersed across the W3 giant molecular cloud (GMC) than previously realized: they are not confined to the high-density layer (HDL) created by the expansion of the neighboring W4 HII region into the GMC. This broader B-type population suggests that star formation in W3 began spontaneously up to 8--10 Myr ago, although at a lower level than the more recent star formation episodes in the HDL. In addition, we describe a method of optimizing sky subtr...

  7. B-Type Natriuretic Peptide: From Posttranslational Processing to Clinical Measurement

    DEFF Research Database (Denmark)

    Goetze, Jens P

    2012-01-01

    BACKGROUND:Plasma cardiac natriuretic peptides and peptide fragments from their molecular precursors are markers of heart disease. Clinical studies have defined the current diagnostic utility of these markers, whereas biochemical elucidation of peptide structure and posttranslational processing has...... revealed new plasma peptide forms of potential clinical use.CONTENT:Natriuretic propeptide structures undergo variable degrees of endo- and exoproteolytic cleavages as well as amino acid modifications, which leave the plasma phase of the peptides highly heterogeneous and dependent on cardiac...

  8. Dat die klip kan heers: Pieter Fourie se Die koggelaar

    Directory of Open Access Journals (Sweden)

    J. L. Coetser

    1991-05-01

    Full Text Available Die koggelaar (The teaser, by playwright Pieter Fourie, is generally regarded as exceptional among his recent works. The purpose of this article is to discuss the title and drought as recurring themes in the drama. The teaser is Boet Cronje, but he is of the opinion that everyone teases him. In an ironic twist of events he finally believes that God teases him by not providing the rain he so desperately needs. An investigation of the text reveals the utilization of psychoanalytical theory, i.e. the theory of the collective and the personal unconscious as formulated by Jung. In this case physical drought initiates events which lead to the development of a fully-fledged psychosis in Boet. As a consequence of the interconnection of the personal and the collective unconscious the physical drought surrounding Boet additionally becomes a dramatic metaphor for the figurative drought in the community of which he is part.

  9. X-radiographic study of rare-earth compounds with special regardment of modulated structures. The response of the crystal structure to stoichiometry deviations; Roentgengraphische Untersuchung von Seltenerdverbindungen mit besonderer Beruecksichtigung modulierter Strukturen. Die Antwort der Kristallstruktur auf Stoechiometrieabweichungen

    Energy Technology Data Exchange (ETDEWEB)

    Leisegang, Tilmann

    2010-04-09

    Even shortly after World War II, as large amounts of ultrapure rare earths (RE) became available for scientific research, a large reservoir of peculiar phenomena was uncovered. These had not been investigated before or were completely unknown. Examples of these phenomena are, magnetic ordering, the KONDO effect, quantum critical points, heavy fermion behaviour, as well as superconductivity. A strong influence of small variations of the chemical composition on the physical properties had been observed. The main focus of the present thesis is the detailed elucidation of the crystal structure of fundamental representatives of this class of substances, as well as the influence of dedicated variations of the chemical composition on their structure and properties. In particular, the characterisation of modulated crystals is an important facet. A large spectrum of physical methods, especially X-ray diffraction, is employed in the investigations. Results on oriented intergrowth in the Y-Ni-B-C system, incommensurately ordered vacancies in the Ce-Si system, incorporation of stacking faults as well as commensurately ordered transition metal atoms (TM) in the RE-TM-Si system and site specific occupancy in the Y-Mn-Fe-O system are presented. Their elucidation is reported for the first time. It is shown which consequences the structural peculiarities will have on the physical properties. An objective of this thesis is to give an overview of the possible ''answers'' that can be obtained with regard to the influence of the crystal structure of rare earth transition metal compounds on deviations of the chemical composition. (orig.)

  10. Bedryf- en organisasiesielkunde - Die grondslag van personeelbestuur

    Directory of Open Access Journals (Sweden)

    L. D. Coetzee

    1978-11-01

    Full Text Available In a recent article in People and Profits Whyte (1978 attempts to distinguish between Industrial Psychology and Personnel Management and states that Industrial Psychology is "one specific aspect" of Personnel Management. Whether such difference exists is analysed in terms of Whyte's definition and views of Personnel Management and Industrial Psychology and recent developments in the field of Industrial and Organizational Psychology. It is concluded that differences do exist but that they are not the same as those which Whyte emphasizes. In order to promote common objectives both the similarities and differences should be recognized and close co-operation between Industrial and Organizational psychologists and Personnel Mangers should be encouraged.OpsommingIn 'n onlangse artikel in People and Profits poog Whyte (1978 om 'n onderskeid te tref tussen Bedryfsielkunde en Personeelbestuur en spreek die mening uit dat die Bedryfsielkunde 'n spesifieke aspek van Personeelbestuur is. Of daar wel so 'n onderskeid bestaan word in hierdie artikel ontleed aan die hand van Whyte se definisie en beskouinge van Personeelbestuur en Bedryfsielkunde en die resente ontwikkelinge op die terrein van die Bedryf- en Organisasiesielkunde. Daar word tot die slotsom gekom dat daar wel geringe klemverskille bestaan, maar dat dit nie dieselfde is as die wat Whyte beklemtoon nie. Ten einde die gemeenskaplike doelstellings te bevorder, moet beide die ooreenkomste en verskille erken word en moet noue samewerking tussen Bedryf- en Organisasiesielkundiges en personeelbestuurders aangemoedig word.

  11. Amensie en demensie met verwysing na die intellek

    Directory of Open Access Journals (Sweden)

    P. C. W. Deppe

    1958-03-01

    Full Text Available ,,Es ist der Geist der sich den Kórper baut” het Goethe gesê en hy het daardeur die monistiese begrip in die psigiatrie beklemtoon. Dwarsdeur die eeue het die ontwikkelingsgeskiedenis van die mens maar telkens getoon hoedat daar by die mens veral, nie anders gedink kan word dan as 'n psigosomatiese eenheid nie. 

  12. Die sterwende kind in hospitaalvernand

    Directory of Open Access Journals (Sweden)

    Fredrika de Villiers

    1981-09-01

    Full Text Available Illness and death of a child is a crisis situation in the family, affecting all members. Parents experience certain universal problems such as denial, feelings of guilt and withdrawal. The dying child is usually aware of his situation and experiences fear and loneliness. He has diverse physical and psychological needs as a result of his illness which must be met by parents and nurses. In caring for the terminally ill child attention must be given to providing: a physical environment conducive to well-being; a consistent emotional climate; communication which should include therapeutic play; a therapeutic program in which various measures are taken to enhance acceptability; physical care where the child is encouraged to help himself as far as possible; psycological and spiritual care to allay his fears and anxiety.

  13. Should assisted dying be legalised?

    Science.gov (United States)

    2014-01-01

    When an individual facing intractable pain is given an estimate of a few months to live, does hastening death become a viable and legitimate alternative for willing patients? Has the time come for physicians to do away with the traditional notion of healthcare as maintaining or improving physical and mental health, and instead accept their own limitations by facilitating death when requested? The Universities of Oxford and Cambridge held the 2013 Varsity Medical Debate on the motion “This House Would Legalise Assisted Dying”. This article summarises the key arguments developed over the course of the debate. We will explore how assisted dying can affect both the patient and doctor; the nature of consent and limits of autonomy; the effects on society; the viability of a proposed model; and, perhaps most importantly, the potential need for the practice within our current medico-legal framework. PMID:24423249

  14. Die singulation method and package formed thereby

    Science.gov (United States)

    Anderson, Robert C.; Shul, Randy J.; Clews, Peggy J.; Baker, Michael S.; De Boer, Maarten P.

    2012-08-07

    A method is disclosed for singulating die from a substrate having a sacrificial layer and one or more device layers, with a retainer being formed in the device layer(s) and anchored to the substrate. Deep Reactive Ion Etching (DRIE) etching of a trench through the substrate from the bottom side defines a shape for each die. A handle wafer is then attached to the bottom side of the substrate, and the sacrificial layer is etched to singulate the die and to form a frame from the retainer and the substrate. The frame and handle wafer, which retain the singulated die in place, can be attached together with a clamp or a clip and to form a package for the singulated die. One or more stops can be formed from the device layer(s) to limit a sliding motion of the singulated die.

  15. Development of vacuum die-casting process

    Institute of Scientific and Technical Information of China (English)

    Masashi Uchida

    2009-01-01

    The vacuum die-casting process, started 25 years ago in Japan, has been widely applied. This technology contributes very much to improvement of castings quality. The main factor causing the defects of die castings is the trapped air in the mold cavity, while the key technology of vacuum die-casting process is to avoid the trapped air effectively by evacuating the cavity before casting. At the same time, due to the shot speed and the casting pressure reduced in half, the service life of the die is prolonged and the productivity is enhanced, as well. Vacuum die-casting process is of great significance in improving the die castings quality and making up the shortcomings of super-high-speed shot casting.

  16. Hemofilie onder die nasate van koningin Victoria

    Directory of Open Access Journals (Sweden)

    Francois P. Retief

    2013-03-01

    Full Text Available Hierdie studie bespreek die uitwerking van die sogenaamde Victoriaanse hemofilie op Europese koningshuise gedurende die negentiende en twintigste eeu. Hemofilie as molekulêre defek word verduidelik en die kliniese beeld van die siekte word aangedui. ’n Bespreking van toepaslike terapeutiese ingrepe volg. Dan word ’n historiese oorsig verskaf van die verspreiding van Victoriaanse hemofilie vanaf koningin Victoria (Britse monarg, 1837–1901 via sommige van haar dogters na ander lede van die Britse koningshuis en ook na die Duitse, Russiese en Spaanse koningshuise. Elf bevestigde gevalle van hemofilie onder lede van koningin Victoria se nageslag word vermeld, asook drie ander moontlike gevalle van die siekte. Die effek van hemofilie op die verloop van die geskiedenis word ook ondersoek.Haemophilia amongst the descendants of Queen Victoria. This study discusses the impact of ‘Victorian haemophilia’ on the royal houses of Europe during the 19th and 20th centuries. Haemophilia as a molecular defect is explained and the clinical picture of the condition is indicated. Applicable therapeutic interventions also receive attention. Next, an historical review is provided of how ‘Victorian haemophilia’ spread from Queen Victoria (British monarch, 1837–1901 via some of her daughters to other members of the British royal family and also to the royal houses of Germany, Russia and Spain. Eleven confirmed cases of haemophilia amongst the descendants of Queen Victoria are mentioned, as well as three other possible cases. The effect of haemophilia on the course of history is also investigated.

  17. MIDCAB Operationen in Wien - die ersten Erfahrungen

    Directory of Open Access Journals (Sweden)

    Czerny M

    1999-01-01

    Full Text Available Die sogenannte MIDCAB (minimal invasive direct coronary artery bypass Operation wurde als chirurgische Therapie der koronaren Eingefäßerkrankung in letzter Zeit kontroversiell diskutiert. Ihr klinischer Stellenwert ist weiterhin unklar. Im Zeitraum von April 1996 bis Mai 1998 wurde die MIDCAB-Operation an 57 Patienten an der Abteilung für Herz-Thorax Chirurgie, Universität Wien durchgeführt. Zielgefäße für eine chirurgische Revaskularisierung waren die LAD (n = 52 und die RCA (n = 5. Als arterieller Graft dienten die linke Art. mammaria interna (LAD-Bypass bzw. die Art. gastroepiploica dextra (RCA-Bypass. Als Zugänge wurden limitierte Schnittführungen gewählt, in 91% der Fälle die anterolaterale Thorakotomie und in 9% der subxyphoidale Zugang, die Anastomosierungen erfolgten am schlagenden Herzen ohne Herzlungenmaschine. In 52 Fällen wurde die LIMA (Left internal mammary artery mit der LAD anastomosiert. Bei 3 von 52 Patienten mußte wegen einer intramyokardialen LAD zu einer konventionellen Operation gewechselt werden, in 4 Fällen war eine Revision notwendig. In allen Fällen gab es keinen Todesfall und keinen perioperativen Infarkt. Bei 36 Patienten wurde eine postoperative Kontrollangiographie durchgeführt, es ergab sich eine primäre Offenheitsrate von 96%. In 5 Fällen wurde eine Anastomose zwischen GEA und RCA hergestellt. Es gab keine Konversion, keinen Todesfall und keinen Myokardinfarkt. Drei dieser Patienten wurden postoperativ nachangiographiert, die Bypässe waren gut durchgängig. Zum derzeitigen Zeitpunkt sind alle 57 Patienten klinisch symptomfrei. Nach Überwindung von anfänglichen technischen Schwierigkeiten sind die Ergebnisse mit der MIDCAB-Operation sehr gut. Als potentielles Patientenkollektiv für die Zukunft scheinen sich vor allem Patienten nach multiplen kardiologischen Interventionen an der LAD bzw. der RCA anzubieten.

  18. Die transurethrale Elektroresektion der Prostata (TURP)

    OpenAIRE

    Böhm, Jürgen

    2006-01-01

    Aufgrund der Vielfalt neuer Methoden zur Behandlung der benignen Prostatahyperplasie (BPH) wird in dieser Arbeit der Stellenwert der transurethralen Resektion der Prostata (TURP) als Goldstandardtherapie überprüft. Diesbezüglich wurden die relevanten Daten (insbesondere in Hinblick auf die Langzeitergebnisse) von über 1000 Patienten erhoben, die sich zwischen 1989 und 1997 einer TURP in der urologischen Klinik und Poliklinik (Klinikum rechts der Isar, München) unterzogen hatten. Zur weiteren ...

  19. DIE GESKIEDENIS VAN DIE SUID-AFRIKAANSE MILITÊRE AKADEMIE, 1950 - 1990

    Directory of Open Access Journals (Sweden)

    G.E. Visser

    2012-02-01

    part of the debate. Also in dispute, was the location of the Academy at Saldanha, rather than in the military heart-land in Pretoria. By interpreting the academic training needs of the Defence Force correctly and positioning itself accordingly, the Academy survived that crisis. Thereafter, the Academy time and again adapted to the changing military and socio-political environment and strove towards ever increasing relevance to the Defence Force. In this way female and non-European students were admitted to the Military Academy, whilst the way was also paved for the admittance of students from other African states. In anticipation of the new political dispensation in South Africa, a concerted effort was launched in 1990 to make the student body more representative of the South Africa population in terms of race and sex. The Military Academy has through the years established itself as a credible military academic institution and has made a significant contribution towards military professionalism in South Africa. By 1990 it favourably positioned itself to continue that role in future. Though forming only a small percentage of the total officer corps, the Academy graduates have gradually been distributed at all levels of the' officer corps and have dominated the top posts in the SA Defence Force since the early 1970's. They were consequently well placed in 1990 to play a significant role in preparing the Defence Force for the so-called "New South Africa". ****** AFRIKAANSE OPSOMMING: Die Suid-Afrikaanse Militêre Akademie is op 1 April 1950 gestig met die doel om die militêrakademiese opleiding van kandidaatoffisiere hier te lande op dieselfde peil as in die buiteland te bring en dit terselfdertyd tot universiteitsvlak te verhef. Die Minister van Verdediging, F.C. Erasmus, wou egter ook die Akademie gebruik as instrument om die Afrikaner sy regmatige plek, naas Engelssprekendes, in die offisierskorps te laat inneem en sodoende die oorwegend Britse karakter van die

  20. Die religieuse grondslag van ons omgewingskrisis

    Directory of Open Access Journals (Sweden)

    M.L. Hugo

    1975-03-01

    Full Text Available Die mensdom is besig om sy habitat op so ’n wyse te misbruik en te besoedel dat sy toekoms op hierdie planet duister is. In die woorde van White “.. surely no creature other than man has ever managed to foul its nest in such short order”. Hierdie stelling is nie oordrewe nie soos blyk uit die vloedgolf van literatuur wat tans verskyn oor hierdie kwessie. Miskien die sprekendste titel onder hierdie bronne wat onlangs verskyn het, is dié onder redaksie van Anderson: “OMEGA: Murder of the Ecosystem and Suicide of Man.”

  1. Goethe und die Kindsmörderin

    Directory of Open Access Journals (Sweden)

    Ursula Künning

    2005-11-01

    Full Text Available Am 28. November 1783 wurde in Weimar die vierundzwanzigjährige Dienstmagd Johanna Catharina Höhn wegen der Tötung ihres neugeborenen Kindes hingerichtet. Maßgeblich beteiligt am Todesurteil war Johann Wolfgang von Goethe als Mitglied des Beratungsgremiums des Herzogs von Weimar Carl Gustav. Äußerst kritisch beurteilt Rüdiger Scholz in seinem Text die Goetherezeption, die bis in die Gegenwart hinein den Schriftsteller idealisiert und Rechtfertigungen für seine Mitwirkung am Schicksal der Johanna Catharina Höhn sucht.

  2. Anfangen, sich die Welt anders vorzustellen

    Directory of Open Access Journals (Sweden)

    Sabine Fuchs

    2006-11-01

    Full Text Available Der Sammelband Butler Matters bezeugt Judith Butlers außerordentliche Bedeutung für feministische und queere Studien und Forschung. In elf Beiträgen wird Butlers (frühes Werk von Gender Trouble und Bodies That Matter über Excitable Speech bis zu The Psychic Life of Power betrachtet und sein weit reichender Einfluss quer durch die wissenschaftlichen Disziplinen nachgewiesen. Dargestellt werden auch die kontroverse Rezeption von Butlers Werk sowie die politischen Wirkungen von Butlers Denken. Besonders anregend ist ein zweiteiliges Interview mit Judith Butler, in dem sie auf ein breites Spektrum von Fragen eingeht, die auch wichtige Themen ihrer aktuelleren Werke betreffen.

  3. ‘n Vergelykende histomorfologiese assessering van die testis van twee Clarias spesies van die Okavango Delta, Botswana

    Directory of Open Access Journals (Sweden)

    M.L. Mokae

    2012-03-01

    Full Text Available Die testis van twee Clarias species wat in die Okavango Delta voorkom, is histomorfologiesgeassesseer om die verskil in struktuur te beskryf, omdat die twee spesies se testiskleur verskilmet die Clarias ngamensis ‘n swart testis en die Clarias gariepinus ‘n roomkleurige testis.

  4. Die inszenierte Autorin Performing the Author

    Directory of Open Access Journals (Sweden)

    Michiko Mae

    2008-11-01

    Full Text Available chs wird in seinem Aufbau durch die drei Phasen des Selbstfindungsprozesses, genauer der Selbsterfindung der ‚Schriftstellerin Yū Miri‘ in ihren Werken und ihren medialen Selbstinszenierungen strukturiert. Es gelingt Iwata-Weickgenannt sehr überzeugend, das Sichtbarmachen der performativen Konstruiertheit von Identität im Werk und Leben Yūs herauszuarbeiten. Sie zeigt dabei auch, dass das Konzept der Performativität ein sehr geeigneter Bezugsrahmen für die Analyse von Identitätsbildungsprozessen ist.The Japanese-Korean author Yū Miri (born in 1968, still fairly unknown in Germany, belongs to those successful contemporary Japanese authors for whom it is typical to be known and celebrated not only for their texts but also for their excessive media presence. The multimedia staging by the author of her self as the ‘author Yū Miri’ sparks just as much interest in the Japanese public and literary scene as do her literary texts. In her book, published by the Munich-based house Iudicium Verlag, Iwata-Weickgenannt provides not only a comprehensive overview of Yū’s literary works published between the years of 1994 and 2005, but she also thematizes the medial representation of ‘Yū Miri’ in her analyses. In the first section of her book, Iwata-Weickgenannt provides a very good overview of the field out of which Yū’s identity problematic as a Japanese-Korean author arises. The second main section of the book is structured along the three phases of the self-discovery process, or rather the self-creation process, of

  5. Discriminating between cardiac and pulmonary dysfunction in the general population with dyspnea by plasma pro-B-type natriuretic peptide

    DEFF Research Database (Denmark)

    Mogelvang, R; Goetze, JP; Schnohr, P;

    2007-01-01

    OBJECTIVES: This study was designed to determine whether measurement of plasma pro-B-type natriuretic peptide (proBNP) could be used in discriminating between cardiac and pulmonary dyspnea in the general population. BACKGROUND: Natriuretic peptides are useful markers in ruling out acute cardiac...... the expected concentration of plasma proBNP based on age and gender was established for dyspneic subjects: an actual plasma proBNP concentration below half of the expected value ruled out left ventricular systolic and diastolic dysfunction (sensitivity 100%, 95% CI 100% to 100%; specificity 15%, 95% CI 12...

  6. Kink degeneracy and rogue potential solution for the (3+1)-dimensional B-type Kadomtsev--Petviashvili equation

    Indian Academy of Sciences (India)

    ZHENHUI XU; HANLIN CHEN; ZHENGDE DAI

    2016-08-01

    In this paper, we obtained the exact breather-type kink soliton and breather-type periodic soliton solutions for the (3+1)-dimensional B-type Kadomtsev--Petviashvili (BKP) equation using the extended homoclinic test technique. Some new nonlinear phenomena, such as kink and periodic degeneracies, are investigated. Using the homoclinic breather limit method, some new rational breather solutions are found as well. Meanwhile, we also obtained the rational potential solution which is found to be just a rogue wave. These results enrich thevariety of the dynamics of higher-dimensional nonlinear wave field.

  7. Verskyningsvorme van die Simbolisme in die ouer Afrikaanse vertelkuns

    Directory of Open Access Journals (Sweden)

    H. Roos

    1990-05-01

    Full Text Available As the Symbolist movement has primarily been linked to the poetic mode, the association of symbolism with prose writing, and particularly with traditional Afrikaans prose, raises many questions, From the writings of older critics it appears that whereas they did identify symbolic patterns in the work of contemporaries, the presence of a specific Symbolist influence is either not recognized at all, or played down and evaluated negatively. However, several of the early authors themselves, e.g. Leipoldt, Grosskopf and Marais, referred to, or admitted to being influenced by the great 19th-century Symbolist poets. The most marked example of Symbolist writing is evident in the short stories of Marais (“Die Reënbul” and Van Melle (Denker kom kyk. In all the cases where the symbolist influence can be traced, several common characteristics are evident: the authors remained outside the mainstream of traditional Afrikaans prose writing, the lyrical tone and a decadent mood dominate, and in these early works signs of the innovative “Sestiger” prose are already evident.

  8. Ideologiese normverplasings en die Afrikaanse handwoordeboek van die negentigerjare

    Directory of Open Access Journals (Sweden)

    A. Carstens

    1995-05-01

    Full Text Available Ideological norm replacement and the Afrikaans desk dictionary of the ninetiesIn South Africa the past decade has been marked by extensive sociopolitical changes and by concomitant linguistic changes. These changes may be regarded as instances of norm replacement - a process during the course of which a norm or a set of norms is gradually replaced by another norm or set of norms. It is maintained that the standard synchronic dictionaries of a language not only have the obligation to reflect lexicalised norm replacements, but also to make projections with regard to future use. Two standard synchronic desk dictionaries of Afrikaans, namely the eighth edition of Verklarende Afrikaanse Woordeboek (1992 and the third edition of Verklarende Handwoordeboek van die Afrikaanse Taal (1994 are explored with special regard to their reflection of norm replacements within the domains of race and political ideology. It is shown that the compilers of these dictionaries consciously and sincerely aimed at removing all racial bias but that they failed to record the diversity of meaning within the political lexicon and the semantic shifts which have occurred within that lexicon during the past decade.

  9. Kontekstuele bepalers by die beplanning van skoolwoordeboeke

    Directory of Open Access Journals (Sweden)

    Herman L. Beyer

    2011-10-01

    Full Text Available

    OPSOMMING: Die doel van hierdie artikel is om tot die metaleksikografiese gesprek oor skoolwoordeboeke as 'n tipe pedagogiese woordeboek by te dra. Die fokus is op kontekstuele bepalers wat by die beplanning van skoolwoordeboeke verreken behoort te word: Binne die konteks van 'n veeltalige Namibië word enkele onderwyskundige sisteme verken wat 'n impak op die ontwerp van gedrukte skoolwoordeboeke vir die sekondêre skoolfase kan hê, naamlik skoolkurrikula, die nasionale taalbeleid vir skole en die beleid van leerdergerigte onderwys. Hierdie artikel voer ook aan dat die voor die hand liggende teikengebruiker van 'n skoolwoordeboek, naamlik die leerder, nie die enigste teikengebruiker is nie: Die onderwyser word as medeteikengebruiker gestel wanneer dit by die gebruik van woordeboeke in die onderrigleersituasie kom. Verskillende tipes gevalle van woordeboekgebruik in die mikrokonteks van die onderrigleersituasie word onderskei, naamlik woordeboekonderrig, woordeboekgeïntegreerde taalonderrig en woordeboekgeondersteunde taalonderrig. Hierdie tipes gebruik behoort komponente van 'n woordeboekpedagogie te wees, wat uiteindelik behoort te lei tot outonome woordeboekgebruik en die gepaardgaande vestiging van 'n individuele woordeboekkultuur by die leerder. Die leksikograaf moet al hierdie aspekte inreken wanneer 'n skoolwoordeboek beplan word ten einde die nodige leksikografiese vernuwing in te voer. Enkele voorstelle vir sodanige vernuwings en vir verdere navorsing word ten slotte aangebied.

    Sleutelwoorde: GEBRUIKERSGERIGTE LEKSIKOGRAFIE, KONTEKS, LEERDER, LEERDERGERIGTE ONDERWYS, LEERWOORDEBOEK, LEKSIKOGRAAF, METALEKSIKOGRAFIE, NASLAANWOORDEBOEK, ONDERWYSER, PEDAGOGIESE WOORDEBOEK, SISTEEM, SKOOLWOORDEBOEK, TAALBELEID, TEIKENGEBRUIKER, WOORDEBOEKGEBRUIK, WOORDEBOEKGEÏNTEGREERDE TAALONDERRIG, WOORDEBOEKONDERSTEUNDE TAALONDERRIG, WOORDEBOEKONDERRIG, WOORDEBOEKPEDAGOGIE

    ABSTRACT: Contextual Determiners in the Planning of School

  10. A comparison of the accuracy of three removable die systems and two die materials.

    Science.gov (United States)

    Sivakumar, I; Mohan, J; Arunachalam, K S; Zankari, V

    2013-09-01

    The purpose of this study was to evaluate the dimensional shift of three commonly used die systems (Conventional system, Pindex system, Di-Lok tray system) with two commercially available type IV die stones (Ultra rock and Pearl stone). Under controlled conditions, ten casts, each with two removable dies, were constructed for each system for a total of 30 casts and 60 removable dies. Before and after sectioning measurements to within 0.01 mm in horizontal and vertical planes were recorded and differences calculated. Data were analyzed with 't' tests, one way analysis of variance and post hoc Tukey test. The results demonstrated that among the die systems compared, no single system was superior to the others in all respects. But among the die materials, dies poured in Pearl stone exhibited more dimensional changes than Ultra rock (pdie material is as critical as selection of any particular die system for successful fabrication of fixed partial denture and implant prosthesis.

  11. Die Motions of New Forging Process Using IntermediateDie Assembly

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    The die motions of a new forging process for automation with an intermediate die assembly called hamburger were analyzed through high-speed video pictures. The results showed that the upper die that is assembled in the hamburger and retained over the lower die collides few times with the ram and workpiece, but sound products can be obtained with less sticking in spite of the lowered impacts of hit.

  12. Vokaalverplasing in die Afrikaans van die Griekwas van Griekwaland-Wes

    Directory of Open Access Journals (Sweden)

    P. J.P. Henning

    1984-05-01

    Full Text Available Afrikaans is die totaal van al sy dialekte — Griekwa-afrikaans en Standaardafrikaans is maar twee voorbeelde daarvan. Chambers (1980:3 sê baie duidelik: “… a language is a collection of mutually intelligible dialects” . Hierdie definisie het die voordeel dat dit dialekte kan karakteriseer as subslandaarvorme van ’n taal en dit kan ook weer die kriterium wees om deur middel van vergelyking die variasies op te spoor.

  13. Metateoretiese vertrekpunte ten opsigte van wetenskaplike navorsing in die Liturgiek

    Directory of Open Access Journals (Sweden)

    Barend J. de Klerk

    2013-11-01

    Full Text Available Om die nuwe ontwikkelings in die Liturgiek grondig te kan beoordeel, moet na die metateoretiese onderbou van die verskillende standpunte gekyk word. Wanneer ’n navorser op die terrein van die Liturgiek nie hierdie wendings in sy metateoretiese vertrekpunte verreken nie, kan sodanige navorser of meegesleur word deur hierdie denkrigtings, of aan die ander kant, impulsief reaksionêr ’n onwetenskaplike oordeel daaroor uitspreek. Die navorsingsartikel het daarom ten doel om die eie reformatoriese metateoretiese vertrekpunte ten opsigte van die Liturgiek te probeer formuleer en om vas te stel wat die invloed daarvan is in die konteks van wendings in die denkklimaat asook die leefwêreld en kultuur waarin die wetenskaplike taak uitgevoer word. Hierdie navorsingsartikel het verder ten doel om ’n voorbeeld daar te stel hoe hierdie metateoretiese beskouing ’n navorsingsprojek kan stuur. Die wyse waarop God in die doop werksaam is en die effek daarvan op vergifnis en versoening in die Suid-Afrikaanse konteks, is die voorbeeld van hoe ’n navorsingsprojek in die wetenskap van die Liturgiek aangepak kan word.

  14. Ultrasound motion tracking for radiation therapy; Ultraschallbewegungstracking fuer die Strahlentherapie

    Energy Technology Data Exchange (ETDEWEB)

    Jenne, J. [Fraunhofer-Institut fuer Bildgestuetzte Medizin MEVIS, Bremen (Germany); Mediri GmbH, Heidelberg (Germany); Schwaab, J. [Mediri GmbH, Heidelberg (Germany)

    2015-11-15

    In modern radiotherapy the radiation dose can be applied with an accuracy in the range of 1-2 mm provided that the exact position of the target is known. If, however, the target (the tumor) is located in the lungs or the abdomen, respiration or peristalsis can cause substantial movement of the target. Various methods for intrafractional motion detection and compensation are currently under consideration or are already applied in clinical practice. Sonography is one promising option, which is now on the brink of clinical implementation. Ultrasound is particularly suited for this purpose due to the high soft tissue contrast, real-time capability, the absence of ionizing radiation and low acquisition costs. Ultrasound motion tracking is an image-based approach, i.e. the target volume or an adjacent structure is directly monitored and the motion is tracked automatically on the ultrasound image. Diverse algorithms are presently available that provide the real-time target coordinates from 2D as well as 3D images. Definition of a suitable sonographic window is not, however, trivial and a gold standard for positioning and mounting of the transducer has not yet been developed. Furthermore, processing of the coordinate information in the therapy unit and the dynamic adaptation of the radiation field are challenging tasks. It is not clear whether ultrasound motion tracking will become established in the clinical routine although all technical prerequisites can be considered as fulfilled, such that exciting progress in this field of research is still to be expected. (orig.) [German] In der modernen Strahlentherapie kann die Dosis mit einer Genauigkeit von 1-2 mm appliziert werden, sofern die Position der Zielstruktur genau bekannt ist. Liegt diese Zielstruktur (der Tumor) jedoch in der Lunge oder im Abdomen, koennen u. a. die Atmung oder die Peristaltik zu einer substanziellen Bewegung des Zielvolumens fuehren. Verschiedene Methoden zur intrafraktionellen Bewegungsdetektion

  15. Bylaag 3 tot „Koer&’’, April en Junie, 1955: Die belang van toegepaste geologie en die werk van die geoloog in ons mineral afhanklike besawing

    Directory of Open Access Journals (Sweden)

    P. B. Ackermann

    1955-03-01

    Full Text Available Die toekomstigc ontwikkeling, welvaart en sekuriteit van ons land en die handhawing en verbetering van ons huidige lewenstandaard hang tot’n groot mate af van die doeltreffendste gebruik van ons oorvloedige mineraalhulpbronne, maar beperkte watervoorrade.

  16. Die vraag na ’n nuwe belydenis, met besondere verwysing na die ‘Proeve’

    Directory of Open Access Journals (Sweden)

    P. J. Coetzee

    1977-06-01

    Full Text Available Uit Matt. 16:16–18 blyk dat daar ’n allernouste verband deur Christus gelê is tussen kerk en belydenis. Die belydenis staan ook in onmiddellike verband met die bediening van die sleutelmag (vgl. vr. 84 H. Kateg..

  17. Die Königlich Zoologische Gesellschaft „Natura Artis Magistra” und die Tierpsychologie

    NARCIS (Netherlands)

    Bierens de Haan, J.A.

    1939-01-01

    Die Königlich Zoologische Gesellschaft „Natura Artis Magistra”, deren Hundertjahrfeier wir diesen Sommer feiern, hat sich von Anfang an die Aufgabe gestellt, mehr als die Eigentümerin eines Gartens zu sein, in welchem mehr oder weniger seltene und kuriose Tiere für das Publikum zur Schau gestellt si

  18. Die Kasteel "De Goede Hoop" (1921-1923 : Die verhaal van 'n reddingsdaad.

    Directory of Open Access Journals (Sweden)

    Jan Ploeger

    2012-02-01

    Full Text Available Die Kasteel De Goede Hoop is ongetwyfeld die belangrikste historiese monument waaroor OIlS vandag beskik. Nie aileen was dit gedurende die Nederlandse en Britse koloniale tydperke in ons geskiedenis belangrik as 'n setelplaas vir siviele en militêre bestuur nie, maar ook is dieselfde vyfhoekige militêre bouwerk, militêrhistories beskou, besonder waardevol.

  19. The VLT-FLAMES Tarantula Survey XVIII. Classifications and radial velocities of the B-type stars

    CERN Document Server

    Evans, C J; Dufton, P L; Howarth, I D; Walborn, N R; Markova, N; Clark, J S; de Mink, S E; de Koter, A; Dunstall, P R; Hénault-Brunet, V; Apellániz, J Maíz; McEvoy, C M; Sana, H; Simón-Díaz, S; Taylor, W D; Vink, J S

    2015-01-01

    We present spectral classifications for 438 B-type stars observed as part of the VLT-FLAMES Tarantula Survey (VFTS) in the 30 Doradus region of the Large Magellanic Cloud. Radial velocities are provided for 307 apparently single stars, and for 99 targets with radial-velocity variations which are consistent with them being spectroscopic binaries. We investigate the spatial distribution of the radial velocities across the 30 Dor region, and use the results to identify candidate runaway stars. Excluding potential runaways and members of two older clusters in the survey region (SL 639 and Hodge 301), we determine a systemic velocity for 30 Dor of 271.6 +/- 12.2 km/s from 273 presumed single stars. Employing a 3-sigma criterion we identify nine candidate runaway stars (2.9% of the single stars with radial-velocity estimates). The projected rotational velocities of the candidate runaways appear to be significantly different to those of the full B-type sample, with a strong preference for either large (>345 km/s) or...

  20. Block synthesis of A (type 2) and B (type 2) tetrasaccharides related to the human ABO blood group system.

    Science.gov (United States)

    Ryzhov, Ivan M; Korchagina, Elena Yu; Popova, Inna S; Tyrtysh, Tatiana V; Paramonov, Alexander S; Bovin, Nicolai V

    2016-07-22

    Herein we report the synthesis of 3-aminopropyl glycosides of A (type 2) and B (type 2) tetrasaccharides via [3 + 1] block scheme. Peracetylated trichloroacetimidates of A and B trisaccharides were used as glycosyl donors. The well-known low reactivity of 4-OH group of N-acetyl-d-glucosamine forced us to test four glucosamine derivatives (3-Bz-1,6-anhydro-GlcNAc and 3-trifluoroacetamidopropyl β-glycosides of 3-Ac-6-Bn-GlcNAc, 3-Ac-6-Bn-GlcN3, and 3-Ac-6-Bn-GlcNAc2) to select the best glycosyl acceptor for the synthesis of type 2 tetrasaccharides. The desired tetrasacchrides were not isolated, when 3-trifluoroacetamidopropyl glycosyde of 3-Ac-6-Bn-GlcNAcβ was glycosylated. Glycosylation of 3-Bz-1,6-anhydro-GlcNAc derivative resulted in α-glycoside as a major product. High stereospecificity was achieved only in the synthesis of B (type 2) tetrasaccharide, when 3-trifluoroacetamidopropyl 3-Ac-6-Bn-GlcNAc2β was applied as the glycosyl acceptor (β/α 5:1), whereas glycosylation with trichloroacetimidate of A trisaccharide was not stereospecific (β/α 1.3:1). Glycosylation of 3-trifluoroacetamidopropyl glycoside of 3-Ac-6-Bn-GlcN3β with trichloroacetimidates of A and B trisaccharides provided the same stereochemical yield (β/α 1.5:1).

  1. Early type stars at high galactic latitudes II. Four evolved B-type stars of unusual chemical composition

    CERN Document Server

    Ramspeck, M; Edelmann, H

    2001-01-01

    We present the result of differential spectral analyses of a further four apparently normal B-type stars. Abundance anomalies (e.g. He, C, N enrichment), slow rotation and/or high gravities suggest that the programme stars are evolved low-mass B-type stars. In order to trace their evolutionary status several scenarios are discussed. Post-AGB evolution can be ruled out. PG 0229+064 and PG 1400+389 could be horizontal branch (HB) stars, while HD 76431 and SB 939 have already evolved away from the extreme HB (EHB). The low helium abundance of HD 76431 is consistent with post-EHB evolution. The enrichment in helium, carbon and nitrogen of the remaining stars can be explained either by deep mixing of nuclearly processed material to the surface or by diffusion processes modified by magnetic fields and/or stellar winds. A kinematic study of their galactic orbits indicates that the stars belong to an old disk population.

  2. Abraham Kuyper en volksideologie onder die Afrikaners

    Directory of Open Access Journals (Sweden)

    K. Smit

    1989-06-01

    Full Text Available Om die waarheid te sê, Kuyper is lank nie meer gewild in Gereformeerde geledere in Suid-Afrika nie. Deels moet dit gewyt word aan die assosiasie van apartheidsideologie met Kuyper se idee van skeppingsordeninge (’n idee wat ook verbind kan word met Hitler se regverdiging van sy uitwissingsoperasies.

  3. Energy Consumption of Die Casting Operations

    Energy Technology Data Exchange (ETDEWEB)

    Jerald Brevick; clark Mount-Campbell; Carroll Mobley

    2004-03-15

    Molten metal processing is inherently energy intensive and roughly 25% of the cost of die-cast products can be traced to some form of energy consumption [1]. The obvious major energy requirements are for melting and holding molten alloy in preparation for casting. The proper selection and maintenance of melting and holding equipment are clearly important factors in minimizing energy consumption in die-casting operations [2]. In addition to energy consumption, furnace selection also influences metal loss due to oxidation, metal quality, and maintenance requirements. Other important factors influencing energy consumption in a die-casting facility include geographic location, alloy(s) cast, starting form of alloy (solid or liquid), overall process flow, casting yield, scrap rate, cycle times, number of shifts per day, days of operation per month, type and size of die-casting form of alloy (solid or liquid), overall process flow, casting yield, scrap rate, cycle times, number of shifts per day, days of operation per month, type and size of die-casting machine, related equipment (robots, trim presses), and downstream processing (machining, plating, assembly, etc.). Each of these factors also may influence the casting quality and productivity of a die-casting enterprise. In a die-casting enterprise, decisions regarding these issues are made frequently and are based on a large number of factors. Therefore, it is not surprising that energy consumption can vary significantly from one die-casting enterprise to the next, and within a single enterprise as function of time.

  4. Die Gattung Stenothoe (Crustacea, Amphipoda) im Mittelmeer

    NARCIS (Netherlands)

    Krapp-Schickel, Gertraud

    1976-01-01

    Ausgangssituation dieser Untersuchung war die Kenntnis von 11 nominellen Stenothoe-Arten im Mittelmeer. Von diesen wurde St. bosphorana Sowinski, 1898, seit der Beschreibung nicht mehr wiedergefunden, von St. dactylipotens Chevreux, 1908, kannte man nur das ♀, schließlich waren die Arten im Komplex

  5. Student Nurses' Perception of Death and Dying

    Science.gov (United States)

    Niederriter, Joan E.

    2009-01-01

    Student nurses are involved in caring for patients who are actively dying or who have been told they have a terminal illness and are faced with the process of dying. Students encounter these patients in hospitals, nursing homes, at home or in hospice care settings. According to Robinson (2004), "nurses are the healthcare providers that are most…

  6. Prediction of Part Distortion in Die Casting

    Energy Technology Data Exchange (ETDEWEB)

    R. Allen Miller

    2005-03-30

    The die casting process is one of the net shape manufacturing techniques and is widely used to produce high production castings with tight tolerances for many industries. An understanding of the stress distribution and the deformation pattern of parts produced by die casting will result in less deviation from the part design specification, a better die design and eventually more productivity and cost savings. This report presents methods that can be used to simulate the die casting process in order to predict the deformation and stresses in the produced part and assesses the degree to which distortion modeling is practical for die casting at the current time. A coupled thermal-mechanical finite elements model was used to simulate the die casting process. The simulation models the effect of thermal and mechanical interaction between the casting and the die. It also includes the temperature dependant material properties of the casting. Based on a designed experiment, a sensitivity analysis was conducted on the model to investigate the effect of key factors. These factors include the casting material model, material properties and thermal interaction between casting and dies. To verify the casting distortion predictions, it was compared against the measured dimensions of produced parts. The comparison included dimensions along and across the parting plane and the flatness of one surface.

  7. Die Verwandlung der Philosophie in eine historische Diagnostik der Differenzen

    OpenAIRE

    Casale, Rita

    2001-01-01

    In diesem Beitrag versucht die Autorin, „den philosophischen Kontext darzustellen, in dem der Differenzbegriff entstand“. Die Autoren (Nietzsche, Heidegger, Derrida, Deleuze und Foucault), die die Autorin „für die Frage der begrifflichen Thematisierung der Differenz“ betrachtet, „gelten als die theoretischen Bezugspunkte der Postmoderne, wobei dieser Beitrag „die Rekonstruktion eines philosophischen Ansatzes“ ist, „dem Nietzsche den Namen ‚historisches Philosophieren’ gab“. Inhalt: 1. Nietzsc...

  8. Etiese perspektiewe op haatspraak in die lig van die derde gebod

    Directory of Open Access Journals (Sweden)

    Jakobus M. (Koos Vorster

    2014-02-01

    Full Text Available Hierdie artikel fokus op die implikasies van die derde gebod met betrekking tot haatspraak in Suid-Afrika (SA vandag. Die artikel gaan uit van die standpunt dat die name van God op sy wese dui. Die name van God soos dit in die bybelse openbaringsgeskiedenis ontwikkel word, druk die gemeenskapskarakter van God se verhouding met mense en die skepping uit. Die betekenis van die name kulmineer in die Nuwe-Testamentiese uitdrukkings Vader en God is liefde. Alle verbale gedrag wat hierdie gemeenskaps- en liefdesverhouding inhibeer, oortree die derde gebod. Die misbruik van die Naam van God vind onder andere plaas wanneer mense, wat na die beeld van God geskep is, gedegradeer word deur haatspraak, omdat sodanige degradering die gemeenskap en liefde tussen God en die mens skend. Ten slotte word sekere gevalle van haatspraak soos dit vandag in Suid-Afrika voorkom, teologies-eties belig teen die agtergrond van die betekenis van die derde gebod. Hierdie vorms sluit religieuse, rassistiese, xenofobiese, seksistiese en homofobiese haatspraak in.This article focuses on the implications of the third commandment for hate speech in modern-day South Africa. The article contends that the names of God are expressions of his Being. The names of God as they are developed in the biblical history of revelation express his creation of covenantal community and restored relations with humankind and creation. The meaning of the names of God culminates in the New Testament expressions Father and God is love. Verbal actions that inhibit the new community created by God or violate love transgress the third commandment. Misuse of the name of God occurs among others when people, created in the image of God, are verbally degraded by hate speech because such degradation violates the community of love between God and humankind. In conclusion, the article indicates forms of hate speech in South Africa that should be dealt with in the light of the third commandment. These are acts

  9. Die funksionaliteit van die martelaarsverhale in Victor van Vita se Historia Persecutionis (HP

    Directory of Open Access Journals (Sweden)

    Nico P. Swartz

    2012-11-01

    Full Text Available Victor van Vita het geglo dat die Vandale se vervolging van die Christene in Noord-Afrika (429–489 n.C. ’n straf van God was. Die Christene in Noord-Afrika was volgens hom immoreel en het losbandige lewens gelei. Lyding of marteling is hiervolgens ’n natuurlike resultaat van die mens se sonde. Victor verklaar in Pauliniese konteks dat die sondige liggaam deur middel van marteling vernietig word en dat die mens nie meer slaaf van die sonde sal wees nie. Victor wil dus die persepsie by die leser tuisbring dat marteling ’n goddelike en verlossende kwaliteit behels. Die uitbeelding van die martelaars se leefwyse moet die leser aanspoor om hulle dade na te streef. Hieromtrent bied die martelaarverhale ’n vierledige funksie vir die handhawing van morele waardes in die burgerlike samelewing. Dié funksies vergestalt die etiese, eksemplariese, filosofiese en aansporende dimensies van die martelaarsverhale in die Historia Persecutionis. Op grond hiervan is die martelaarsverhale in die Historia Persecutionis nie net as ’n literêre werk nie, maar dra dit ook by tot onderrig in die sedeleer.The functionality of the martyrs’ accounts in Victor of Vita’s Historia Persecutionis (HP. Victor of Vita believed that the Vandal persecution of the Christians in North Africa (429–489 AD was a visitation of God to punish them for their immoral and dissolute life. In this context, suffering and torture are the logical results of profligacy which Victor explains in Paulinian terms as a means of destroying the human body and thus releasing mankind from bondage to sin. Victor therefore advances arguments to convince the reader that torture contains both divine and redeeming qualities. The life of the martyr is portrayed as an encouragement so that the reader may emulate this conduct. The martyr narratives provide four measures for the preservation of moral values in civil society. They embody the ethical, exemplary, philosophical and stimulant dimensions

  10. Goethe almost died of urosepsis.

    Science.gov (United States)

    Gross, A J; Hummel, G

    1999-12-01

    In the year of 1805, Goethe almost died of urosepsis. His urological problems were not diseases arising from full health but a new variation in a life accompanied by illnesses. Some sources date the first colics he experienced to the year 1795 and others say 1805. The most dramatic period in the course of his illness was in February, when he suffered from fever of such an extent that one could speak of urosepsis. Recovery took place slowly and was accompanied by minor relapses. Nothing about this is written down in his work. On the advice of his doctors, Goethe undertook a cure in Lauchstädt in July and August. The report of his consultant, Professor Johann Christian Reil, on his problems in the field of urology remained undiscovered until 1937. Professor Reil recommended treatment with thermae carolinae, aqua calcis, soap soda crystallisata, herbae subastringentes, and uva ursi, among other measures. With increasing age, Goethe's colics disappeared. The passing of a stone has never been described. Whereas Goethe hinted about medical problem other than those reported herein, the urological problems discussed in this article were left unmentioned. Nonetheless, literature that deals with Goethe's diseases is interesting from the aspect of both the history of medicine and the history of culture.

  11. Die koste van vrywillige, beheerbare arbeidomset

    Directory of Open Access Journals (Sweden)

    G. Roodt

    1997-06-01

    Full Text Available The cost of voluntary, controllable labour turnover. Labour turnover for individuals can be classified as voluntary or non-voluntary, whereas labour turnover in organisations can be categorised as controllable or non-controllable. Data on total labour turnover in a particular service organisation indicated the existence of a possible problem. Voluntary, controllable labour turnover between 1 January 1988 and 31 March 1991 for technicians only within this particular organisation was closely scrutinised by calculating the direct recruitment, training, and separation costs for this period. The replacement costs of the technical population alone (N = 1594 for the last-mentioned period were approximately R94 million and could possibly increase to as high as R470 million if the hidden costs are also considered. If these costs are projected to the period 1980-1991 in which there were 60284 voluntary leavers, the total labour turnover costs for this organisation could be astronomical. It is clear from the above that preventative strategies by management could reduce the negative consequences of labour turnover and improve the prospects of a positive outcome. Opsomming Arbeidomset kan vir individue as vrywillig of nie-vrywillig geklassifiseer word; daarenteen kan arbeidomset vir organisasies as beheerbaar of nie-beheerbaar gekategoriseer word. Gegewens oor totale arbeidomset in "n bepaalde diensorganisasie het op die bestaan van 'n moontlike probleem gewys. Die koste van vrywillige, beheerbare arbeidomset van slegs tegnici is vir die periode 1 Januarie 1988 tot 31 Maart 1991 in die betrokke organisasie nader ondersoek, deur die direkte verkrygings-, opieidings- en skeidingskoste van tegniciverlaters vir hierdie tydperk te bereken. Die vervangingskoste van slegs die tegnicipopulasie (N = 1594 vir die laasgenoemde tydperk het sowat R94 miljoen beloop en kon selfs so hoog soos R470 miljoen wees as die verskuilde kostes ook verreken is. Indien hierdie kostes

  12. Homogenity of Die Casting and Returning Material

    Directory of Open Access Journals (Sweden)

    J. Malik

    2012-04-01

    Full Text Available Homogeneity of die castings is influenced by wide range of technological parameters as piston velocity in filling chamber of die casting machine, filling time of mould cavity, temperature of cast alloy, temperature of the mould, temperature of filling chamber, surface pressure on alloy during mould filling, final pressure and others. Based on stated parameters it is clear, that main parameters of die casting are filling time of die mould cavity and velocity of the melt in the ingates. Filling time must ensure the complete filling of the mould cavity before solidification process can negatively influence it. Among technological parameters also belong the returning material, which ratio in charge must be constrained according to requirement on final homogeneity of die castings. With the ratio of returning material influenced are the mechanical properties of castings, inner homogeneity and chemical composition.

  13. Research on Forging Die Design Ontology

    Institute of Scientific and Technical Information of China (English)

    ZHANG Wenlei; FAN Yushun

    2006-01-01

    Forging die design is heavily dependent on engineers' experiences. But traditional AI technologies can barely provide a standard knowledge representation style for knowledge transferring. This paper introduces ontology into forging die design. 3-layer forging die design ontology is built, which includes Meta-ontology, Domain-ontology and Bottom ontology. Further, by conceptualization, the concepts and their relations are formally addressed by primitives such as Term, Relation and Function etc, which are explicitly expressed by concept tree. Bottom ontology uses Knowledge Item and Prototype to represent and capture general knowledge for knowledge reuse and share. Forging die design ontology building approach is discussed for standard knowledge representation, knowledge mine and knowledge driven CAD design etc. And OWL language is employed for integration among different domain ontologies integration. Finally a locomotive forging die KBE system is presented to demonstrate this approach.

  14. Moyamoya disease; Die Moyamoya-Erkrankung

    Energy Technology Data Exchange (ETDEWEB)

    Papanagiotou, P.; Grunwald, I.Q.; Politi, M.; Roth, C.; Reith, W. [Universitaetsklinikum des Saarlandes Homburg/Saar (Germany). Klinik fuer Diagnostische und Interventionelle Neuroradiologie

    2005-05-01

    Moyamoya disease is an idiopathic progressive vasculopathy characterized by slowly progressive narrowing involving the distal internal carotid artery and the proximal circle of Willis. Collateral vessels develop to compensate for the slowly progressive stenosis. These enlarged collaterals appear as a ''puff of smoke'' on angiography, which gives the disease its name. This review discusses the clinical manifestation, imaging findings, and angiographic features. (orig.) [German] Die Moyamoya-Erkrankung ist eine idiopathische progressive Vaskulopathie, die durch eine langsam progrediente Stenosierung der distalen A. carotis interna und der proximalen Arterien des Circulus arteriosus Wilisii charakterisiert wird. Kollaterale Gefaesse hypertrophieren, um die progressive Stenosierung auszugleichen. In der Angiographie zeigen diese Kollateralen ein ''nebelartiges'' Erscheinungsbild, was der Erkrankung ihren Namen gab. In diesem Review werden das klinische Bild, die Bildgebung sowie die angiographischen Eigenschaften der Erkrankung diskutiert. (orig.)

  15. Die identifisering van ’n geskikte vraelys vir die bepaling van lewenskwaliteit by Suid-Afrikaanse vroue met servikskanker

    Directory of Open Access Journals (Sweden)

    George du Toit

    2015-02-01

    Full Text Available Servikskanker is een van die algemeenste kankertipes onder Suid-Afrikaanse vroue. In die afwesigheid van ’n voldoende voorkomende servikale sitologieprogram presenteer die meer derheid vroue met servikskanker in ’n gevorderde stadium. Die prognose van dié vroue, ondanks terapie, is beperk. Menslike immuniteitsgebreksvirus-infeksie (MIV-infeksie benadeel die behandeling van servikale kanker. Servikskanker, en die behandeling daarvan, het ’n impak op die lewenskwaliteit van die vroue. Die objektiewe bepaling van lewenskwaliteit kan lei tot aanpassing van behandeling, asook toepaslike ondersteuning. Hierdie studie is gedoen om die mees geskikte vraelyste vir Suid-Afrikaanse vroue met servikskanker te identifiseer. Die twee vraelyste wat internasionaal die meeste gebruik word, is die European Organisation for the Research and Treatment of Cancer (EORTC en die Functional Assessment of Chronic Illness Therapy Measurement System (FACIT. Deur die sistematiese ondersoek van gepubliseerde artikels is die twee vraelyste aan die hand van spesifieke kenmerke geëvalueer. Hierdie kenmerke sluit in: studiestruktuur (dwarssnit of prospektief, lewenskwaliteit- uitkoms (primêr of sekondêr, tydstip van gebruik tydens die siekte en die nasionaliteit van die studiebevolking. Gebaseer op hierdie kenmerke is die EORTC as die mees geskikte vraelys geïdentifiseer.

  16. Die Krakauer Kirche von Karmeliten und Karmelitaninnen

    Directory of Open Access Journals (Sweden)

    Józef Szymon Wronski

    2004-12-01

    Full Text Available 1. Die Klosterkirche der unbeschuhten Karmelitinnen Zum Heiligen Josef. Ein glücklicher Auftakt und somit die charakteristische Einführung in das 20. Jh. für den Kirchenbau von Krakau war die Errichtung der Karmeliterinnen St. Josephs-Kirche an der Lobzowska-Straße 40, in der die Architekten (Tadeusz Stryjeński (1849-1943 - Projektant der Kirche und Franciszek Mączyński (1874-1947 - Ausführer des Bauprojektes mit eigenen Verbesserungen die historisch- eklektizistischen Formen d.h. die mittelalterlichen Formen vor allem des sog. Übergangsstils vereinfachten. Die Kirche, die in den Jahren 1903-1905 errichtet wurde, steht inmitten vom Baukomplex des Klosters, dessen Grundriss das Quadrat ist49. Der Kirchenbau ist ein dem Gesamtbau des Klosters eingefügter Längsraum. Hinter dem Chor liegt das Oratorium des Konvents. Das Material Backstein (mit Verwendung von Stein erinnert an die Baukunst eines der besten Architekten jener Zeit, nämlich Teodor Talowskis (1857-1910, der viele Kirchen in Südpolen, aber auch viele Bürgerhäuser nicht nur in Krakau im ausgehenden 19. Jh. baute. Die Architektur der Karmeliterinnen St. Josephs-Kirche ist immer noch im Malerischen begriffen. Aber die Vereinfachung der historischen Formen führt zu ihrer „Beruhigung” und dadurch zur Wuchtigkeit des Ausdrucks. Bemerkenswert ist die in dieser Zeit (in der Anlage noch seltene ausgewogene Proportionierung des Baukörpers. Das methodische Prinzip jener Zeit ist der Kontrast. Im Kontrast zu den gedrungenen und wuchtigen Formen des Baukörpers stehen z.B. die sich verjüngenden obeliskenförmigen und pylonenartigen Türmchen, die nicht nur die Eingangsfassade der Kirche flankieren, sondern auch an den Ecken des Querhauses der Kirche stehen. Die ingravierten weißen Steine an der Fassade in der Zahl von Zehn erinnern an das Gebot des Karmelterinnenordens: Bete täglich den Rosenkranz und sind zugleich ein Vanitativmotiv. 2. Die Klosterkirche der unbeschuhten

  17. B-Type Natriuretic Peptide Deletion Leads to Progressive Hypertension, Associated Organ Damage, and Reduced Survival: Novel Model for Human Hypertension.

    Science.gov (United States)

    Holditch, Sara J; Schreiber, Claire A; Nini, Ryan; Tonne, Jason M; Peng, Kah-Whye; Geurts, Aron; Jacob, Howard J; Burnett, John C; Cataliotti, Alessandro; Ikeda, Yasuhiro

    2015-07-01

    Altered myocardial structure and function, secondary to chronically elevated blood pressure, are leading causes of heart failure and death. B-type natriuretic peptide (BNP), a guanylyl cyclase A agonist, is a cardiac hormone integral to cardiovascular regulation. Studies have demonstrated a causal relationship between reduced production or impaired BNP release and the development of human hypertension. However, the consequences of BNP insufficiency on blood pressure and hypertension-associated complications remain poorly understood. Therefore, the goal of this study was to create and characterize a novel model of BNP deficiency to investigate the effects of BNP absence on cardiac and renal structure, function, and survival. Genetic BNP deletion was generated in Dahl salt-sensitive rats. Compared with age-matched controls, BNP knockout rats demonstrated adult-onset hypertension. Increased left ventricular mass with hypertrophy and substantially augmented hypertrophy signaling pathway genes, developed in young adult knockout rats, which preceded hypertension. Prolonged hypertension led to increased cardiac stiffness, cardiac fibrosis, and thrombi formation. Significant elongation of the QT interval was detected at 9 months in knockout rats. Progressive nephropathy was also noted with proteinuria, fibrosis, and glomerular alterations in BNP knockout rats. End-organ damage contributed to a significant decline in overall survival. Systemic BNP overexpression reversed the phenotype of genetic BNP deletion. Our results demonstrate the critical role of BNP defect in the development of systemic hypertension and associated end-organ damage in adulthood.

  18. Endokrinologie in der Lebensmitte: Die Perimenopause.

    Directory of Open Access Journals (Sweden)

    Seifert-Klauss V

    2012-01-01

    Full Text Available Anhand dreier Kasuistiken aus der gynäkologischen Hormonsprechstunde werden beispielhaft besondere Situationen und eine darauf individuell abgestimmte Hormontherapie während der Perimenopause vorgestellt. Der erste Fall beschreibt eine 47-jährige Patientin mit ausgeprägter perimenopausaler Symptomatik und Östrogen-Dominanz. Die Dokumentation über 5 Jahre illustriert die Probleme, die perimenopausal durch die endogene Überstimulation der Ovarien entstehen können. Über die Unvorhersehbarkeit der perimenopausalen Hormonschwankungen, die sich in Brustspannen und Wassereinlagerungen bei hohen Östrogenspiegeln sowie Hitzewallungen und Schweißausbrüchen bei Abfall der endogenen Östrogenspiegel äußern, sollten Patientinnen aufgeklärt werden. Durch eine zyklische Gestagensubstitution kann bei Östrogendominanz unter Umständen mehr Beschwerdeerleichterung erreicht werden als durch eine hochdosierte Östrogentherapie. Fall 2 stellt eine 47-jährige Patientin mit Epilepsie vor, deren perimenopausal bedingte Hormonschwankungen zu vermehrten Anfällen führen. Hier gilt es abzuklären, ob die Anfälle durch stark erhöhte Estradiolspiegel, die zum Ende des Zyklus hin abfallen, begünstigt werden oder aber die Art und Entstehungsgeschichte der Epilepsie nicht auf eine andere Interaktion zwischen Perimenopause und Anfällen hindeuten. In der dritten Kasuistik geht es um eine 54- jährige Patientin mit Morbus Basedow, bei der die ausgeprägte Interaktion zwischen der Schilddrüseneinstellung und den steigenden FSH-, LHsowie unvorhersehbar wechselnden Östrogenspiegeln aufgezeigt und eine individuelle symptombezogene Hormontherapie erforderlich ist.

  19. Medien als Lernform und die Trimediale Redaktion

    Directory of Open Access Journals (Sweden)

    Wolf Hilzensauer

    2015-01-01

    Full Text Available Der vorliegende Artikel beschreibt ein Konzept für eine handlungsorientierte Medienpädagogik im Bildungsbereich. Im Mittelpunkt steht dabei die SO!-Campusredaktion, die als Methode für expansives Lernen die Möglichkeit bietet, unabhängig von Thema oder Medium die Verantwortung für den Lernprozess in die Hände der Lernenden zu legen. Der Dokumentation von Reflexion über den Lernprozess wird dabei eine besondere Bedeutung zugesprochen. Gleichzeitig werden unterschiedliche mediale Gestaltungsmöglichkeiten (Audio/Radio, Video/Fernsehen und Zeitung – sowohl als Print- als auch als Onlinemedium vorgestellt, die durch das Konzept BYOD – bring your own device – auch einfach und niederschwellig im Bildungskontext umsetzbar sind. Dadurch ergeben sich innovative Möglichkeiten, einen Lernprozess sichtbar zu machen und gleichzeitig eine Grundlage für eine alternative Leistungsbeurteilung anzubieten. Die SO!-Campusredaktion wird derzeit an der Pädagogischen Hochschule Salzburg in Kooperation mit dem Communitysender FS1 und der Radiofabrik entwickelt und erprobt. Community Medien nehmen als MedienpartnerInnen eine bedeutende Stellung ein: Durch ihren offenen Zugang zu Know How und Equipment sowie durch die Möglichkeit, Medienproduktionen über die verfügbaren Distibutionskanäle (Radiofrequenz oder Sendeplatz einer breiten Bevölkerung zugänglich zu machen, gewinnt die Medienpädagogik einen wichtigen Mehrwert in ihrer schulischen und außerschulischen Arbeit. (Dieser Artikel knüpft an den Artikel "BYOD, Smartphonefilme und webbasierte Videoschnittprogramme" der Medienimpulse, Ausgabe 2/2014, an.

  20. ’n Voorgestelde matriks vir die pastorale berading van die verwonde geloofsvervreemde

    Directory of Open Access Journals (Sweden)

    Wentzel C. Coetzer

    2013-11-01

    Full Text Available Hierdie artikel fokus op die rol van pastorale berading aan die emosioneel-verwonde en geloofsvervreemde persoon deur middel van die redding in Christus. Die rol van God Drie-enig en die sentrale posisie van die Skrif word ondersoek. Verder word aspekte wat ’n Skrifgefundeerde mensbeeld onderlê, gekonstrueer. Die verband tussen emosionele trauma en geloofsvervreemding, asook die aspek van reg en geregtigheid, word hierna ondersoek. Die belangrikheid van die heil in Christus in die geestelike genesingsproses word ook bespreek. Ter afsluiting word ’n pastoraal-terapeutiese matriks voorgestel vir ingrype in die huidige lewenskrisis en die bestaande geloofsvervreemding met inagneming van die traumageskiedenis. Praktiese riglyne word verder verskaf as hulpmiddel vir begeleiding in die ondersteuningsproses.A proposed matrix regarding the pastoral counselling of the wounded faith-estranged. This article focuses on the role of the pastoral counselling of the emotionally wounded and faith-estranged person through the mediation of the salvation in Christ. The role of the Triune God and the central position of Scripture in mediating the salvation in Christ are also examined and the Scriptural view of man is constructed. The role of emotional trauma in the estrangement from God as well as the importance of justice and retribution are examined as it relates to the spiritual and emotional healing of the wounded faith-estranged. The article also discusses the prominence of the salvation in Christ in the spiritual healing process. In conclusion, a pastoral-therapeutic matrix of intervention is proposed to help in addressing the present life crisis and current faith-estrangement within the context of the trauma history, with a view to find healing from the woundedness and the faith-estrangement through salvation in Christ. Practical guidelines are offered to guide this supporting process.

  1. Bestuursontwikkelingsbehoeftes in die Suid-Afrikaanse lugmag: 'n Vergelykende studie van die persepsies van die vier kultuurgroepe

    Directory of Open Access Journals (Sweden)

    J. J. Theart

    2000-06-01

    Full Text Available Management Development Needs in the South African Air Force: A comparative study of the perceptions of four cultural groups. The object of the study was to determine whether the perceptions of managers and supervisors from different cultural groups in the South African Air Force differ concerning their managerial skills, and to determine to what extent the perceptions of the superiors differ from those of their subordinates. A questionnaire of perceived management development needs was used to determine whether specific training needs exist. It was found that there are indeed statistically significant differences between the various cultural groups'perceptions of their management development needs and that training needs exist within all four cultural groups. Opsomming Die doel van die studie was om te bepaal of die persepsies van bestuurders en toesighouers mt verskillende kultuurgroepe in die Suid-Afrikaanse Lugmag, rakende hul bestuursvaardighede, onderling van mekaar verskil en om te bepaal in watter opsig die persepsies van bogeskiktes van die van hul ondergeskiktes verskil. nVraelys van waargenome bestuursontwikkelingsbehoeftes is gebruik om te bepaal of daar spesifieke opieidingsbehoeftes bestaan. Daar is bevind dat daar wel statistics beduidende verskille tussen die kultuurgroepe se persepsies van hul bestuursontwikkelingsbehoeftes bestaan en dat daar opieidingsbehoeftes by al vier groepe bestaan.

  2. Influence of die geometry and material selection on the behavior of protective die covers in closed-die forging

    Science.gov (United States)

    Yu, Yingyan; Rosenstock, Dirk; Wolfgarten, Martin; Hirt, Gerhard

    2016-10-01

    Due to the fact that tooling costs make up to 30% of total costs of the final forged part, the tool life is always one main research topic in closed-die forging [1]. To improve the wear resistance of forging dies, many methods like nitriding and deposition of ceramic layers have been used. However, all these methods will lose its effect after a certain time, then tool repair or exchange is needed, which requires additional time and costs. A new method, which applies an inexpensive and changeable sheet metal on the forging die to protect it from abrasive wear, was firstly proposed in [2]. According to the first investigation, the die cover is effective for decreasing thermal and mechanical loads, but there are still several challenges to overcome in this concept, like wrinkling and thinning of the die cover. Therefore, an experimental study using different geometries and die cover materials is presented within this work. The results indicate the existence of feasible application cases of this concept, since conditions are found under which a die cover made of 22MnB5 still keeps its original shape even after 7 forging cycles.

  3. Pastorale begeleiding van die self-mutileerder

    Directory of Open Access Journals (Sweden)

    Wentzel C. Coetzer

    2012-11-01

    Full Text Available In hierdie artikel het  dit geblyk dat die toenemende voorkoms van self-mutilering onder jongmense in talle gevalle as uitlaatklep gedien het vir opgeboude druk en nie soseer as ‘n selfmoordpoging nie. Heel dikwels was dit ‘n uitvloeisel van mishandeling en/of seksuele misbruik en die persoon het  dan hierdie metode gebruik om van innerlike pyn ontslae te raak. Gevoelens van alleenheid, ‘n behoefte aan beheer, ‘n behoefte om net íéts te voel, asook ‘n behoefte om die self te straf, kon ook ‘n rol gespeel het. Die gesinsklimaat was oor die algemeen van besondere belang. Hierdie probleem het aan pastorale beraders en aan die kerk ‘n besondere uitdaging gebied deur onder andere veel meer op die probleem van pyn, asook die hantering daarvan te fokus. Dit het  verband gehou met die feit dat ontkenning in die verlede ‘n groot rol gespeel het in sekere kerklike kringe en ook binne sekere gesinne. As deel van ‘n pastoraal-terapeutiese strategie in die begeleiding van die self-mutileerder kon aspekte soos die identifisering van die rol van  leuens, die benutting van oplossings uit die verlede, vergifnis, nagmaal, gebed en meditasie gevolglik uiters belangrike komponente van die helingsproses gevorm het. Pastorale beraders sal hulleself ten volle op die hoogte moet bring van die verskynsel van self-mutilering ten einde in staat te wees om werklik te kan help.Pastoral guidance for the self-mutilator. In this article it seemed that the increase in the occurrence of self-mutilation among young people in many cases served as a pressure-relief valve and not a suicide attempt as such.  It was very often the outcome of ill-treatment and/or sexual abuse and the person used this method to get rid of the inner pain. Feelings of aloneness, a need to be in control, a need to feel at least something and a need to punish the self could also have played a role. The family climate was generally very important. This provided a special challenge

  4. Die Entdeckung des Unteilbaren Quanten, Quarks und die Entdeckung des Higgs-Teilchens

    CERN Document Server

    Resag, Jörg

    2014-01-01

    Mitten in Europa ist eine der größten und komplexesten Maschinen in Betrieb gegangen, die wir Menschen je gebaut haben: der Large Hadron Collider (kurz LHC). Mit ihm öffnet sich ein Fenster in eine neue Welt, die viele Geheimnisse birgt: Was verleiht den Teilchen der Materie ihre Masse? Gibt es verborgene Raumdimensionen? Existiert ein tiefer Zusammenhang zwischen Teilchen mit verschiedenem Spin (Supersymmetrie)? Woraus besteht die dunkle Materie, die unser Universum durchdringt? Gibt es das Higgs-Teilchen? Mit diesem Buch taucht der Leser ein in diese wunderbare Welt, die wir Menschen in der Neuzeit entdeckt haben: Atome und ihre Substruktur aus Quarks und Leptonen, die rätselhafte Quantenmechanik, Teilchen des Lichts, Einsteins Gewebe aus Raum und Zeit, die vier Wechselwirkungen und schließlich die neue Welt, in die der LHC gerade vordringt und in der wir Higgs-Teilchen, Supersymmetrie und womöglich erste Anzeichen für die String-Theorie vermuten. Die erste Vermutung konnte mittlerweile bestätigt w...

  5. Totius en die boek Openbaring

    Directory of Open Access Journals (Sweden)

    H.A. Louw

    1999-08-01

    Full Text Available Totius and the Book of Revelation In his sermons on the book Revelation, published in 1921, the Afrikaans theologian and poet, Prof. J.D. du Toit, better known under the pseudonym Totius, took the “futurist” view as the principal way to explain this Bible book. Elements of other views like the “historicist view” were also followed, especially in the sermon on the seven churches in Asia Minor, which regarded each church as concerned with later periods in the history of Western Europe. According to Du Toit the scene of the sealing of the servants of God (7:1-8 and of the great multitude mentioned later in the chapter (7:9-17 is set at the end of time. It should, however, be better to interpret chapter 7:1-8 as the church in John's time and the vast crowd of people from every nation as an image of the redeemed in the bliss of heaven. The multitude who comes (present tense out of the great tribulation are those who died for their faith when Revelation was written. But the article describing the multitude in the original Greek text also seems to indicate the great trouble accompanying the end of things. For Du Toit the prostitute in chapter 17 symbolizes a city, namely Babylon. The harlot, however, had slain a great number of saints who believed in Jesus (17:6. Thus the harlot cannot be identified with Babylon. The city must be Rome, the contemporary representative of the cruel empires which, through the ages have enslaved people by brute force. Rome also killed saints who served Christ. Du Toit’s greatest shortcoming in his explanation of the Book of Revelation was that he did not see that the book Revelation is rooted in a given historical situation.

  6. APPLICATION OF LASER ADDITIVE MANUFACTURING TO PRODUCE DIES FOR ALUMINIUM HIGH PRESSURE DIE-CASTING#

    Directory of Open Access Journals (Sweden)

    M.F.V.T. Pereira

    2012-01-01

    Full Text Available

    ENGLISH ABSTRACT: A number of laser additive manufacturing (LAM technologies can produce fully-dense metal components that potentially offer opportunities to apply the technology in die or mould making (known as rapid tooling. From these LAM technologies, three were selected for evaluation of their suitability as die cavity inserts in the manufacture of high pressure die-casting (HPDC dies. Apart from comparing the different LAM inserts with one another, their performance was also compared with components manufactured in a standard hot work steel. In the HPDC process, the die is unique to each component to be produced. Die cavities in particular are subjected to demanding conditions, such as cyclic heating caused by the introduction of molten aluminium at over 650°C, followed by cooling in water-based die release medium at temperatures around 25°C. Besides cyclic heating, the die cavities are also exposed to pressures exceeding 1500 MPa during the injection of molten aluminium into the cavities. This application of LAM, therefore, poses extreme challenges to the technology. The results of this study confirmed that the metals used in some of the LAM technologies did indeed meet the demanding requirements of the current application, and can lead to significant time- and cost-saving during product or process developments. Based on these findings, a number of recommendations are made for users interested in the application of LAM to produce die cavities.

    AFRIKAANSE OPSOMMING: ’n Aantal laser laagvervaardigingstegnologieë (LLV tegnolgieë is in staat om volledig digte metaalkomponente te lewer, wat tot gevolg het dat hierdie tegnologie potensieel vir vormingsmatrys- of gietmatrysvervaardiging gebruik kan word (bekend as snelgereedskap. Drie van hierdie LLV tegnologieë is gekies vir evaluasie van hulle geskiktheid as gietvorminsetsels tydens die vervaardiging van gietmatryse vir hoë druk matrysgiet (HDMG. Benewens die onderlinge

  7. A- to B-Type Olivine Fabric Transitions Associated with Hydration, Dehydration and Shear Above the Farallon Flat Slab

    Science.gov (United States)

    Behr, W. M.; Smith, D.

    2014-12-01

    We investigate mantle rocks associated with hydration, dehydration and shear above the Farallon flat-slab at its contact with the base of North America. The rocks we focus on are ultramafic inclusions hosted within serpentinized ultramafic microbreccia diatremes of the Navajo Volcanic Field (New Mexico) that erupted to the surface at the waning stages of the Laramide orogeny. A large number of petrological and geochronological studies have pinpointed the origin of these rocks to the hydrated mantle wedge above the Farallon slab as well as tectonically eroded and entrained fragments of the plate interface. We combine petrological observations and EBSD measurements of olivine grainsize and LPO to examine the effects of hydration on olivine fabric development in different parts of the supra-subduction zone mantle. The rocks examined include weakly deformed to strongly foliated tectonites we interpret to represent partially hydrated fragments of the upper plate mantle; and mylonites and ultramylonites we interpret to represent deformed fragments of the plate interface. The rocks deformed at temperatures ranging from 500-900°C based on thermometry, and olivine compositions in some record heating just before incorporation in the diatreme mix. We observe the following: Tectonites exhibit A-type bulk olivine LPOs, but show transitions to B-type LPO in local, fine-grained, dynamically recrystallized regions associated with hydrous minerals. Mylonites and ultramylonites with stable chlorite and/or antigorite and recrystallized grainsizes of less than 10μm show strong B-type olivine LPOs. A single mylonite with recrystallized grainsizes of ~35μm shows evidence for prograde metamorphism and dehydration through the chlorite breakdown reaction at temperatures above ~770°C. It contains no hydrous minerals and shows a strong A-type olivine LPO. Together these rocks demonstrate a strong correlation between hydration under high stress conditions, and B-type olivine LPO

  8. Hoofstuk 2 - Die Klein Begin 1916−1933

    Directory of Open Access Journals (Sweden)

    J.P. Oberholzer

    2010-09-01

    Full Text Available Die opleiding neem ‘n aanvang met een kerklike dosent, J.H.J.A. Greyventein, en ‘n aantal universiteitsdosente. Die studentetal groei stadig. Die vertrek van professor Paterson en die koms van S.P. Engelbrecht in 1921 bring ‘n belangrike wending. Wanneer B. Gemser in 1926 toetree, is daar drie dosente wat tegelyk ampsdraers van die Nederduitsch Hervormde Kerk is. Gemser is dosent in Teologie sowel as in Lettere en Wysbegeerte waar hy begin met die vestiging van ‘n sterk departement Semitiese Tale. Engelbrecht se kundigheid omvat Kerkgeskiedenis sowel as ‘n unieke kennis van die Voortrekker- en ou Tansvaalse geskiedenis en dit kom die Departement Geskiedenis ten goede. Die akademiese gehalte van die opleiding neem toe, en so ook die studentetal. ‘n Bedreiging vir die voortbestaan van die Fakulteit teologie is afgeweer deur die tydige optrede van S.P. Engelbrecht en die tussenkoms van die Eerste Minister. Die selfstandigwording van die Universiteit van Pretoria en die Afrikaanswording van die Universiteit bring ‘n veranderde konteks.

  9. Die „Klasse Allgemeinmedizin“ als Wahlpflichtfach im vorklinischen Studienabschnitt: Didaktischer Aufbau, Lehrziele und Umsetzung [The „General Practice Class“ – an eligible compulsory course in undergraduate medical education: Didactical structure, teaching targets and implementation

    Directory of Open Access Journals (Sweden)

    Langosch, Claudia

    2012-11-01

    Full Text Available [english] Undergraduate medical education in the field of general practice currently faces two considerable challenges: enhancing the attractiveness of general practice for all students and contributing to the necessary future rural physician workforce in primary care. Thus, we introduce a curriculum-based concept called the “General Practice Class” ( as an elective compulsory course to be taken during preclinical study. The aim of this concept is to strengthen the program focus on primary care in rural areas for interested students at an early stage.Since October 2011, the “General Practice Class” in Halle-Wittenberg offers learning experiences in regard to GP professional culture and a practice-oriented learning environment for 10% (n=20 of the freshman students. Each participating student is assigned to an individual GP mentor, who acts as a “professional example” and accompanies the student during the entire course of study. The concept of the “General Practice Class” is considered to be an innovative project due to the close connection between practical experience, problem-oriented skills training, early patient contact, and the accompanying face-to-face mentorship, starting from the beginning of preclinical study.[german] Die universitäre Lehre im Fach Allgemeinmedizin steht vor zwei großen Herausforderungen: die Attraktivität des Faches für alle Studierenden zu erhöhen und den Nachwuchs für eine flächendeckende, wohnortnahe hausärztliche Versorgung in ländlichen Räumen zu gewinnen. Mit dem Curriculum der „Klasse Allgemeinmedizin“ als Wahlpflichtfach nach ÄAppO für den vorklinischen Studienabschnitt stellen wir ein Konzept zur Stärkung von an Primärversorgung orientierten medizinischen Ausbildungsinhalten für eine interessierte Zielgruppe vor.Die „Klasse Allgemeinmedizin“ bietet seit Oktober 2011 für 10% (n=20 der Erstsemester in Halle-Wittenberg einen Erfahrungsraum, um in eine haus

  10. Narratologiese ondersoek en eksegese van die boodskap van die evangelies

    Directory of Open Access Journals (Sweden)

    I. Gräbe

    1986-01-01

    Full Text Available Narratological investigation and exegesis of the message of the gospels This paper argues that the narrative structure of the gospels facilitates the communication of the Biblical message and that exegesis of this message therefore presupposes an assessment of the semantic implications revealed through an analysis of particular genre conventions utilized in the narration of Biblical material. The narrative structure of the gospels shows striking correspondences with basic narrative forms such as fairy tales, so that an analysis of the narrative material on the basic story level, rather than on the level of narrative presentation, seems appropriate. In fact, the correspondence between the levels of story and narrative (Genette 1980 ensures that the deep structure or story content is directly projected onto the surface structure of the narrative text, resulting in a clear communication of the Biblical message.

  11. ’n Beoordeling van die Skrifberoep ten opsigte van die doodstraf

    Directory of Open Access Journals (Sweden)

    De Wet Saaiman

    2012-09-01

    Full Text Available In die lig van die Christelike etiek is ’n beroep op die Skrif ’n sine qua non waar ’n standpunt in verband met ’n etiese vraagstuk ingeneem word. Met ’n beroep op die Skrif is die probleem ongelukkig nie sonder meer opgelos nie. Die verskillende vertolkings van die Skrif het tot gevolg dat etici met teenoorgestelde standpunte hul op dieselfde Skrifgedeeltes beroep. Dit is egter nie voldoende om slegs ’n goeie uiteensetting van vertrekpunte of selfs hermeneutiese reëls te gee nie. Die Christelike etikus moet ’n grondige kennis van die werklikheid hê – etiek word eenvoudig nie in ’n vakuum beoefen nie. In hierdie artikel is ’n beoordeling gedoen van die Skrifberoep ten opsigte van die doodstraf. In die artikel is aangetoon dat die Skrif ten spyte van goeie hermeneutiese vertrekpunte gemanipuleer kan word om die etikus se eie voorveronderstelling te weerspieël.An adjudication of the use of Scripture regarding capital punishment. The use (recall of Scripture is, in light of Christian ethics, a sine qua non when a position with regard to an ethical problem is assumed. A simple interpretation of Scripture does not necessarily settle the problem. Different interpretations of Scripture result in a difference of opinions even when the same Scriptural texts are used. It is therefore simply not sufficient to note a fair explanation of departure points or hermeneutical principles. The Christian ethicist should have an intimate knowledge of reality – ethics is not practised in a vacuum. In this article an adjudication of the use or interpretation of Scripture in the light of capital punishment was conducted. In this article it was shown that Scripture is most often misused despite of fair hermeneutical principles only to reflect the ethicist own preconceived ideas.

  12. Die verband van leerprosesveranderlikes met leersukses

    Directory of Open Access Journals (Sweden)

    D. F. Lotriet

    2002-09-01

    Full Text Available The relationship between learning process variables and study success. The main objective of this study was to determine the relationship between the constructs “meaning orientation” (in-depth approach to study, “transformational conception” and “self-regulation” in the distance education context (TV– learning. A random sample of 1951 participants taken from a large financial institution yielded 263 usable questionnaires. The responses obtained to the 167 items were subjected to factor analysis and item analysis. Opsomming Die hoofdoel van die onderhawige studie was om te bepaal of daar ‘n verband tussen die konstrukte“betekenisoriëntasie"? (dieptebenadering tot leer, “transformasionele begrip"? en “selfregulering"? in die afstandsonderrigkonteks (TV-leer bestaan. ‘n Ewekansige steekproef van 1951 deelnemers geneem uit ‘n groot finansiële instelling het 263 bruikbare vraelyste opgelewer. Die response op 167 items is aan faktor- en itemontledings onderwerp. Daarna is die interver-wantskappe tussen die leerprosesveranderlikes, naamlik “benadering tot leer"?, “begrip van leer"? en regulering-strategieë"? bepaal.

  13. Braunes Fettgewebe: Die neue Waffe gegen Adipositas?

    Directory of Open Access Journals (Sweden)

    Fenzl A

    2014-01-01

    Full Text Available Adipositas entsteht, wenn die Energieaufnahme den Energieverbrauch übersteigt. Braunes Fett – im Gegensatz zu weißem Fett – ist darauf ausgerichtet, Energie in Form von Wärmeproduktion (Thermogenese zu verbrauchen. Bei diesem Vorgang wird die Atmungskette von der ATP-Synthese entkoppelt, was durch das Molekül „Uncoupling Protein-1“ (UCP-1 vermittelt wird, welches praktisch nur in braunem Fettgewebe vorkommt. Aufgrund seiner hohen Stoffwechselaktivität und der rezenten Entdeckung, dass aktives braunes Fett auch in Erwachsenen vorkommt, hat dieses Gewebe in den vergangenen Jahren einen hohen Stellenwert in der Adipositasforschung erlangt. In zahlreichen Tiermodellen führt die Aktivierung von braunem Fett oder die Transformation von weißem in braunes Fett (browning zu einer Erhöhung des Energieumsatzes sowie zum Schutz vor Adipositas und metabolischen Komplikationen. Zusätzlich zu klassisch braunem und weißem Fett wurde kürzlich eine neue Fettart beschrieben, die sowohl weiße als auch braune Eigenschaften aufweist – das so genannte „beige“ Fett. Beige Fettzellen kommen zwar primär im weißen Fettgewebe vor, können aber, ähnlich wie braune Adipozyten, thermogenetisch hoch aktiv sein. Es werden laufend neue Faktoren entdeckt, die die Entwicklung und/oder Funktion von beigem bzw. braunem Fett kontrollieren. Die Bemühungen, molekulare Mechanismen und Stoffwechselvorgänge in braunem Fett besser zu verstehen, haben sich noch intensiviert, als man kürzlich mittels FDG-PET-Untersuchungen entdeckte, dass aktives braunes Fettgewebe nicht nur in Erwachsenen vorkommt, sondern auch den Energieverbrauch steigert. Derzeit existieren allerdings noch keine pharmakologischen Ansätze, um die metabolischen Eigenschaften von braunem Fett therapeutisch nutzen zu können, doch das Rennen ist längst im Gange.

  14. Privaat aftreeoorde in Suid-Afrika: Riglyne vir welstand en volhoubaarheid op die lang termyn

    Directory of Open Access Journals (Sweden)

    Andries C. Hauptfleisch

    2013-02-01

    Full Text Available Ongesubsidieerde privaat aftreeoorde in Suid-Afrika wat gedurende die afgelope drie dekades ontwikkel is, bied talle uitdagings aan die inwoners. Daar bestaan nie ’n algemeen erkende kennisbasis of riglyne om hierdie sensitiewe mark te bedien nie. Navorsing is gedoen om te bepaal welke aspekte die inwoners van aftreeoorde as bevredigend en welke as problematies ervaar. Hierdie navorsing het ook ’n literatuurstudie ingesluit. By wyse van gestruktureerde vraelyste, onderhoude en ’n seminaar is kwantitatiewe sowel as kwalitatiewe data bekom. Die resultate wat betrekking het op agt oorde in die ooste van Pretoria, vier in Bloemfontein en twee op Knysna word gerapporteer, terwyl die studie steeds in ander sentra voortgesit word. Die kwantitatiewe data is in voorkeurvolgorde van die grootste groep (Pretoria gedoen, met die ander groepe daarteenoor aangetoon. Die navorsingsmetodiek was dus gebaseer op die versameling van gekwantifiseerde en kwalitatiewe data, asook beskrywende evaluering. Die resultate bied insiggewende kennis en riglyne ter bepaling van ’n optimale profiel vir die ontwikkeling van privaat aftreeoorde wat volhoubare dienste kan lewer. Die implikasie en waarde van dié studie is dat beide ontwikkelaars van aftreeoorde en voornemende inwoners in staat gestel word om te kan evalueer of ’n bepaalde aftreeoord welstand op die lang termyn volhoubaar aan inwoners sal kan bied.Private retirement resorts in South Africa: Guidelines for wellness and sustainability in the long term. Unsubsidised private retirement resorts in South Africa developed during the last three decades present residents with many challenges. There is no existing generally accepted knowledge base or guidelines to serve this sensitive market. The research objective was to establish which elements are experienced by residents of retirement resorts as satisfactory and which as problematic. A literature study was also undertaken. Quantitative as well as qualitative

  15. N-terminal pro-B-type natriuretic peptide and long-term mortality in stable coronary heart disease

    DEFF Research Database (Denmark)

    Kragelund, Charlotte; Grønning, Bjørn; Køber, Lars;

    2005-01-01

    BACKGROUND: The level of the inactive N-terminal fragment of pro-brain (B-type) natriuretic peptide (BNP) is a strong predictor of mortality among patients with acute coronary syndromes and may be a strong prognostic marker in patients with chronic coronary heart disease as well. We assessed...... the relationship between N-terminal pro-BNP (NT-pro-BNP) levels and long-term mortality from all causes in a large cohort of patients with stable coronary heart disease. METHODS: NT-pro-BNP was measured in baseline serum samples from 1034 patients referred for angiography because of symptoms or signs of coronary...... of myocardial infarction, angina, hypertension, diabetes, or chronic heart failure; creatinine clearance rate; body-mass index; smoking status; plasma lipid levels; LVEF; and the presence or absence of clinically significant coronary artery disease on angiography. CONCLUSIONS: NT-pro-BNP is a marker of long...

  16. On B-type open-closed Landau-Ginzburg theories defined on Calabi-Yau Stein manifolds

    CERN Document Server

    Babalic, Mirela; Lazaroiu, Calin Iuliu; Tavakol, Mehdi

    2016-01-01

    We consider the bulk algebra and topological D-brane category arising from the differential model of the open-closed B-type topological Landau-Ginzburg theory defined by a pair $(X,W)$, where $X$ is a non-compact Calabi-Yau manifold and $W$ has compact critical set. When $X$ is a Stein manifold (but not restricted to be a domain of holomorphy), we extract equivalent descriptions of the bulk algebra and of the category of topological D-branes which are constructed using only the analytic space associated to $X$. In particular, we show that the D-brane category is described by projective matrix factorizations defined over the ring of holomorphic functions of $X$. We also discuss simplifications of the analytic models which arise when $X$ is holomorphically parallelizable and illustrate these analytic models in a few classes of examples.

  17. Prognostic value of B-type natriuretic peptide in surgical palliation of children with single-ventricle congenital heart disease.

    Science.gov (United States)

    Berry, J G; Askovich, B; Shaddy, R E; Hawkins, J A; Cowley, C G

    2008-01-01

    The objective of this prospective study was to assess the prognostic role of perioperative B-type natriuretic peptide (BNP) levels in infants and children with single-ventricle congenital heart disease undergoing Norwood, bidirectional cavopulmonary anastomosis (BCPA), or Fontan operation. BNP levels were measured at baseline, after cardiopulmonary bypass, 6 to 12 hours after surgery, and then daily until indwelling vascular catheters were removed. Outcome measures included length of mechanical ventilation, inotropic support, and hospital stay. Twenty subjects underwent 23 surgical procedures (13 Norwood, 5 BCPA, and 5 Fontan). BNP levels were significantly higher in patients undergoing a Norwood procedure compared with a BCPA or Fontan procedure (p extubation was observed in 92% of patients undergoing a Norwood procedure. Early postoperative BNP levels correlate significantly with the ensuing duration of inotropic support and length of hospitalization. An increase in BNP after extubation may be reflective of the degree of underlying cardiopulmonary instability. Further investigation is necessary to define this important relation.

  18. The role of B-type natriuretic peptide in the diagnosis and treatment of decompensated heart failure

    Institute of Scientific and Technical Information of China (English)

    Michael J. Gallagher; Peter A. McCullough

    2004-01-01

    Heart failure (HF) is a common disease associated with increasing age. B-type natriuretic peptide (BNP), is a cardiac neurohormone, and is released as prepro BNP and then enzyrnatically cleaved to the Ntenninal-proBNP (NT-proBNP) and BNP upon ventricular myocyte stretch. Blood measurements of BNP have been used to identify patients with I-IF. The BNP assay is currently used as a diagnostic and prognostic aid in HF. In general, a BNP level below 100 pg/mL excludes acutely decompensated HF and levels > 500 pg/ml indicate decompensation. Recombinant human BNP (hBNP, nesiritide) is an approved intravenous treatment for acute,decompensated -HF. Nesiritide given in supraphysiologic doses causes vasodilation, natriuresis, diuresis, and improved symptoms over the course of a 48-hour infusion. This paper will sort out the literature concerning the use of this peptide both as a diagnostic test and as an intravenous therapy.

  19. The telomeric protein AKTIP interacts with A- and B-type lamins and is involved in regulation of cellular senescence

    Science.gov (United States)

    Burla, Romina; Carcuro, Mariateresa; Torre, Mattia La; Fratini, Federica; Crescenzi, Marco; D'Apice, Maria Rosaria; Spitalieri, Paola; Raffa, Grazia Daniela; Astrologo, Letizia; Lattanzi, Giovanna; Cundari, Enrico; Raimondo, Domenico; Biroccio, Annamaria; Gatti, Maurizio

    2016-01-01

    AKTIP is a shelterin-interacting protein required for replication of telomeric DNA. Here, we show that AKTIP biochemically interacts with A- and B-type lamins and affects lamin A, but not lamin C or B, expression. In interphase cells, AKTIP localizes at the nuclear rim and in discrete regions of the nucleoplasm just like lamins. Double immunostaining revealed that AKTIP partially co-localizes with lamin B1 and lamin A/C in interphase cells, and that proper AKTIP localization requires functional lamin A. In mitotic cells, AKTIP is enriched at the spindle poles and at the midbody of late telophase cells similar to lamin B1. AKTIP-depleted cells show senescence-associated markers and recapitulate several aspects of the progeroid phenotype. Collectively, our results indicate that AKTIP is a new player in lamin-related processes, including those that govern nuclear architecture, telomere homeostasis and cellular senescence. PMID:27512140

  20. Achilles tendon and sports; Die Achillessehne im Sport

    Energy Technology Data Exchange (ETDEWEB)

    Ulreich, N.; Kainberger, F. [Univ.-Klinik fuer Radiodiagnostik Wien (Austria); Huber, W.; Nehrer, S. [Univ.-Klinik fuer Orthopaedie Wien (Austria)

    2002-10-01

    Because of the rising popularity of recreational sports activities achillodynia is an often associated symptom with running, soccer and athletics. Therefore radiologist are frequently asked to image this tendon. The origin of the damage of the Achilles tendon is explained by numerous hypothesis, mainly a decreased perfusion and a mechanical irritation that lead to degeneration of the tendon. High-resolution technics such as sonography and magnetic resonance imaging show alterations in the structure of the tendon which can be graduated and classified. Manifestations like tendinosis, achillobursitis, rupture and Haglunds disease can summarized as the tendon overuse syndrom. A rupture of a tendon is mostly the result of a degeneration of the collagenfibres. The task of the radiologist is to acquire the intrinsic factors for a potential rupture. (orig.) [German] Aufgrund des starken Anstiegs des Freizeitsportes sind Achillodynien ein besonders mit Laufsport, Fussball und Leichtathletik assoziiertes Symptom und die Indikation zur radiologischen Abklaerung wird oft gestellt. Die Entstehung von Sehnenschaeden wird durch eine Reihe von Hypothesen erklaert, wobei eine gestoerte Gewebeperfusion und eine mechanische Irritation als Hauptursachen angesehen werden, die zur Degeneration des Sehnengewebes und des umgebenden Gleitlagers fuehren. Sie koennen aufgrund sonographischer und MR-tomographischer Zeichen meist klar klassifiziert und graduiert werden, wobei hochaufloesende Techniken eine wesentliche Voraussetzung fuer die subtile Analyse der Sehnenstruktur darstellen. Die einzelnen klinischen Erscheinungsformen wie Tendinose, Achillobursitis, Haglund-Ferse und Sehnenruptur koennen unter dem Begriff des ''Sehnenueberlastungssyndroms'' (Tendon overuse syndrome) subsummiert werden. Rupturen der Achillessehne treten so gut wie immer bei bereits vorgeschaedigtem Kollagenfasergewebe auf, und der radiologischen Diagnostik kommt wesentliche Bedeutung dabei zu

  1. Dying and death in some Roma communities: ethical challenges.

    Science.gov (United States)

    Roman, Gabriel; Gramma, Rodica; Enache, Angela; Pârvu, Andrada; Ioan, Beatrice; Moisa, Ştefana Maria; Dumitraş, Silvia; Chirita, Radu

    2014-04-01

    The Roma people have specific values, therefore their views and beliefs about illness, dying and death are important to be known for health care providers caring for members of this community. The aim of this qualitative study based on 48 semi-structured interviews with Roma patients and caregivers in communities in two regions of Romania was to examine their selfdescribed behaviors and practices, their experiences and perceptions of illness, dying and death. Five more important themes about the Roma people facing dying and death have been identified: (1) The perception of illness in the community as reason for shame and the isolation that results from this, as well as the tendency for Roma people to take this on in their self image; (2) The importance of the family as the major support for the ill/dying individual, including the social requirement that family gather when someone is ill/dying; (3) The belief that the patient should not be told his/her diagnosis for fear it will harm him/her and that the family should be informed of the diagnosis as the main decision maker regarding medical treatment; (4) The reluctance of the Roma to decide on stopping life prolonging treatment; (5) The view of death as 'impure'. These results can be useful for health care providers working with members of the Roma community. By paying attention to and respecting the Roma patients' values, spirituality, and relationship dynamics, the medical staff can provide the most suitable healthcare by respecting the patients' wishes and expectations.

  2. "Superman" Star Christopher Reeve Dies at 52

    Institute of Scientific and Technical Information of China (English)

    Jim Fitzgerald; 李邦珍

    2004-01-01

    @@ Superman actor Christopher Reeve, who turned personal tragedy into a public crusade① and from his wheelchair became the nation's most recognizable spokesman for spinal cord research, has died. He was 52. Reeve died Sunday of complications② from an infection caused by a bedsore③. He went into cardiac arrest④ Saturday, while at his Pound Ridge home, then fell into a coma⑤ and died Sunday at a hospital surrounded by his family, his publicist said. His advocacy for stem cell research helped it emerge as a major campaign issue between President Bush and Sen. John Kerry. His name was even mentioned by Kerry during the second presidential debate on Friday.

  3. Design of Die-casting Die and Analysis of Die Distortion%压铸模具设计及其变形分析

    Institute of Scientific and Technical Information of China (English)

    潘宏歌; 魏家鹏

    2012-01-01

    The port plate was technologically analysed and the its die-casting mold was designed. By using Pro/Mechanic, which was the structural analysis module of Pro/E, the distortion induced by multi-stress in the working of the dies was analyzed. The results show that the die distortion is caused by the dilating force and thermal stress generated by the temperature load, and temperature load is the dominant factor leading to the mold deformation.%以配流盘为例,对其进行工艺分析,并设计压铸模具.同时,利用Pro/E软件的结构分析模块Pro/Mechanic,对模具在工作中承受的多方应力所产生的变形情况进行了分析.结果表明,胀型力和温度载荷所产生的热应力均会引起模具变形,其中,温度载荷是导致模具变形的主导因索.

  4. Die transkripsielees van T.T. Cloete

    Directory of Open Access Journals (Sweden)

    T. Gouws

    1989-05-01

    Full Text Available In a transcriptual approach to the literary discourse, the text as artefact is regarded as a creation of the scriptor. The artificiality of the poetics implies conscious or unconscious structuring - Cloete terms it dreamful thinking (“die dromende denke” - by inevitably exploiting language conventions and the poetic devices, the sole purpose being that the organised composition can be the only (as well as measurable indication of authorial intention. Likewise, in as far as language presents the relevant possibilities, authorial intention is imprinted upon the textual composition or is transposed lingually. Moreover, a transcriptual reading of Cloete texts has shown clearly that the text as language presentation exhibits a wilfulness, a creative language potency or energy which has to be activated by the reader. This dynamic, significatory potency is not constricted by the authorial intention; rather, it offers a framework within which language may claim to determinate actualisation. Realisation by the reader is therefore nothing more than a transcript of the possibilities and presentation of language. Added to this is the following qualification that this transcriptual process brings about an aesthetically realised object which is the imprint of the reader’s understanding. By reading Cloete’s poetry through transcriptually tinted glasses, the richness of this reading strategy becomes clear.

  5. Energy Saving Melting and Revert Reduction Technology: Improved Die Casting Process to Preserve the Life of the Inserts

    Energy Technology Data Exchange (ETDEWEB)

    David Schwam, PI; Xuejun Zhu, Sr. Research Associate

    2012-09-30

    The goal of this project was to study the combined effects of die design, proper internal cooling and efficient die lubricants on die life. The project targeted improvements in die casting insert life by: Optomized Die Design for Reduced Surface Temperature: The life of die casting dies is significantly shorter when the die is exposed to elevated temperature for significant periods of time. Any die operated under conditions leading to surface temperature in excess of 1050oF undergoes structural changes that reduce its strength. Optimized die design can improve die life significantly. This improvement can be accomplished by means of cooling lines, baffles and bubblers in the die. A key objective of the project was to establish criteria for the minimal distance of the cooling lines from the surface. This effort was supported with alloys and machining by BohlerUddeholm, Dunn Steel, HH Stark and Rex Buckeye. In plant testing and evaluation was conducted as in-kind cost share at St. Clair Die Casting. The Uddeholm Dievar steel evaluated in this program showed superior resistance to thermal fatigue resistance. Based on the experimental evidence, cooling lines could be placed as close as 0.5" from the surface. Die Life Extension by Optimized Die Lubrication: The life of die casting dies is affected by additions made to its surface with the proper lubricants. These lubricants will protect the surface from the considerable temperature peaks that occur when the molten melt enters the die. Dies will reach a significantly higher temperature without this lubricant being applied. The amount and type of the lubricant are critical variables in the die casting process. However, these lubricants must not corrode the die surface. This effort was supported with alloys and machining by BohlerUddeholm, Dunn Steel, HH Stark and Rex Buckeye. In plant testing and evaluation was conducted as in-kind cost share at St. Clair Die Casting. Chem- Trend participated in the program with die

  6. Die verband tussen beroepsbesluitloosheid, vrees vir gebondenheid en beroepsidentiteit

    Directory of Open Access Journals (Sweden)

    L. J. Goosen

    1997-06-01

    Full Text Available The relationship between career indecisiveness, fear for commitment and vocational identity. This study examined the correlation between the constructs career indecision, fear of commitment and vocational identity. Ninety-eight under-graduate university students served as research participants and completed the Career Decision Scale (CDS, the Vocational Identity Scale (VIS and the Fear of Commitment Questionnaire (FOCQ. The results indicated that the scores on the CDS were significantly related (p is smaller than 0,05 to the scores on the VIS and the FOCQ. Support was obtained for the important role of the construct of identity in the explanation of career indecisiveness. Opsomming In die onderhawige studie is die aard van die verband tussen die konstrukte beroepsbesluitloosheid, vrees vir gebondenheid en beroepsidentiteit ondersoek. Ag-en-egentig voorgraadse universiteitstudente is by die studie betrek. Die ondersoekgroep het die Career Decision Scale (CDS, die Vocational Identity Scale (VIS en die Fear of Commitment Questionnaire (FOCQ voltooi. Die resultate het aangetoon dat daar beduidende verband (p is kleiner as 0,05 tussen die verkree totaaltellings op die CDS, die VIS en die FOCQ bestaan het. Die belangrike rol wat die konstruk identiteit in die verklaring van beroepsbesluitloosheid speel word deur die bevindings van die onderhawige studie ondersteun.

  7. PCR performance of the B-type DNA polymerase from the thermophilic euryarchaeon Thermococcus aggregans improved by mutations in the Y-GG/A motif

    Science.gov (United States)

    Böhlke, Kristina; Pisani, Francesca M.; Vorgias, Constantinos E.; Frey, Bruno; Sobek, Harald; Rossi, Mosè; Antranikian, Garabed

    2000-01-01

    The effect of mutations in the highly conserved Y-GG/A motif of B-type DNA polymerases was studied in the DNA polymerase from the hyperthermophilic euryarchaeon Thermococcus aggregans. This motif plays a critical role in the balance between the synthesis and degradation of the DNA chain. Five different mutations of the tyrosine at position 387 (Tyr387→Phe, Tyr387→Trp, Tyr387→His, Tyr387→Asn and Tyr387→Ser) revealed that an aromatic ring system is crucial for the synthetic activity of the enzyme. Amino acids at this position lacking the ring system (Ser and Asn) led to a significant decrease in polymerase activity and to enhanced exonuclease activity, which resulted in improved enzyme fidelity. Exchange of tyrosine to phenylalanine, tryptophan or histidine led to phenotypes with wild-type-like fidelity but enhanced PCR performance that could be related to a higher velocity of polymerisation. With the help of a modelled structure of T.aggregans DNA polymerase, the biochemical data were interpreted proposing that the conformation of the flexible loop containing the Y-GG/A motif is an important factor for the equilibrium between DNA polymerisation and exonucleolysis. PMID:11024170

  8. Die omvang en aard van afwesigheid in die werkplek: ‘n Suid-Afrikaanse gevalstudie

    Directory of Open Access Journals (Sweden)

    Anel Du Plessis

    2003-10-01

    Full Text Available The scope and nature of absenteeism in the workplace: A South African case study. The objective of the study was to develop quantitative measures for monitoring trends of absenteeism in a company within the meat industry and to assess qualitatively the possible existence of a collective culture of absenteeism within the organisation. The scope and frequency of absenteeism, costs incurred due to absenteeism, and individual absenteeism patterns of 145 employees, were studied over a period of one year. It was found that 2900 planned and 912 unplanned leave workdays that were lost, resulted in direct costs of R895,054.55. Five employees who were absent most often accounted for 18.60% of the unplanned leave taken. The extraordinary levels of absenteeism found in this case study were ascribed to specific employees. Opsomming Die doel van die studie was om kwantitatiewe metings vir die monitering van afwesigheidstendense vir ‘n maatskappy in die vleisbedryf te ontwikkel en om die moontlike bestaan van ‘n kollektiewe afwesigheidskultuur kwalitatief te ondersoek. Die omvang, frekwensie en koste van afwesigheid, asook individuele afwesigheidspatrone, is bestudeer vir 145 werknemers oor ‘n tydperk van een jaar. Daar is bevind dat 2900 beplande en 912 onbeplande verlofwerkdae wat verloor is, die maatskappy R895,054.55 gekos het. Vyf werknemers wat die meeste afwesig was, was verantwoordelik vir 18,60% van die onbeplande verlof geneem. Die uitsonderlike vlakke van afwesigheid in hierdie gevalstudie is toegeskryf aan spesifieke werknemers.

  9. Die design and process optimization of die cast V6 engine blocks

    Institute of Scientific and Technical Information of China (English)

    2005-01-01

    The use of aluminum, particularly for engine blocks, has grown considerably in the past ten years, and continues to rise in the automotive industry. In order to enhance the quality and engineering functionality of die cast engine blocks, die design and processes have to be optimized. In this study, a computer simulation software,MAGMAsoft, as an advanced tool for optimizing die design and casting process, was employed to virtually visualize cavity filling and patterns of a V6 engine block. The original die design and process was simulated first to establish a baseline.A reality check was used to verifythe predicted results. Then, the die modification with a different runner system was made by using a CAD software, Unigraphics (UG). The simulation on combinations of the modified die design and revised process was performed to examine the effect of die modification and process change on flow filling of V6 engine blocks. The simulated prediction indicates that the enhancement of cavity filling due to the die and process modification minimizes the occurrence of defects during casting, and consequently improves the quality of blocks. The results of mechanical testing show a significant increase in fatigue strengths, and a moderately improvement on tensile properties for the blocks die cast with the new die design and process in comparison with those produced by the original ones.

  10. Ambrosiaster se uitleg van die Filemonbrief en die retoriese analise van hierdie brief

    Directory of Open Access Journals (Sweden)

    D. Francois Tolmie

    2015-03-01

    Full Text Available Die studie van Paulus se brief aan Filemon het gebaat by die hernude belangstelling in die retoriese analise van Nuwe-Testamentiese geskrifte, in die sin dat ’n groot aantal retoriese analises van die brief gepubliseer is. Hierdie retoriese analises is vanuit ’n verskeidenheid perspektiewe gedoen, maar tot dusver het niemand nog die manier sistematies ondersoek waarop die vierde-eeuse outeur, wat later die naam Ambrosiastergekry het, die brief in sy kommentaar op die Pauliniese briewe geïnterpreteer het nie. Hierdie artikel bied dus ’n oorsig van Ambrosiaster se interpretasie van die brief aan Filemon en dui aan watter bydrae dit tot die retoriese analise van die brief kan maak. Ambrosiaster’s exposition of the Letter to Philemon and the rhetorical analysis of the letter. In recent times, the study of Paul’s letter to Philemon benefitted from the renewed interest in the rhetorical analysis of New Testament writings, in the sense that a large number of rhetorical studies of the letter have been published. These rhetorical analyses of the letter have been done from different perspectives, but thus far, no one has systematically investigated the way in which the fourth-century author, who was later called Ambrosiaster, interpreted the letter in his commentary on the Pauline letters. Accordingly, this article offers an overview of Ambrosiaster’s interpretation of the letter to Philemon, and then outlines the contribution that his reading of the letter can make to the rhetorical interpretation of it.

  11. Optimization design for gating system in die-casting die%压铸模浇注系统的优化设计

    Institute of Scientific and Technical Information of China (English)

    李镔

    2013-01-01

      应用CAE软件对压铸件的成型过程进行模拟,根据模拟的结果,对压铸模浇注系统进行优化,改善模具的浇注系统结构,提高了压铸件品质。%The forming process for a die-casting part was simulated by applying CAE soft⁃ware. The gating system in die-casting die was optimized in accordance with the simula⁃tion results and the structure of gating system was improved and the quality of die-casting parts was enhanced.

  12. Geobasisdaten für die Planung?

    Science.gov (United States)

    Zölitz-Möller, Reinhard

    2002-09-01

    Die Nutzer von Geobasisdaten der Vermessungs- und Katasterverwaltungen finden heute vor allem in ATKIS (Amtliches Topographisch-Kartographisches Informationssystem) und in der ALK (automatisiert geführte Liegenschaftskarte; hier noch eingeschränkt) flächendeckende und für eine Fachdatenintegration geeignete Geodatenbestände vor. Gleichwohl wird von Nutzerseite häufig ein differenziertes und in Teilen kritisches Bild gezeichnet. Die Kritik richtet sich v.a. auf die Probleme, die ATKIS-Anwender mit dem Nutzerkomfort, dem komplexen Datenmodell, unrichtigen Flächennutzungsangaben, inkompatiblen Objektdefinitionen, den Preisen sowie mangelnder Aktualität und Vollständigkeit haben. Dennoch gibt es für viele Zwecke auch in der Planung langfristig keine echte Alternative zu den Geobasisdaten.

  13. Understanding Dying Patients and Their Families

    Science.gov (United States)

    Librach, S.L.; Talbot, Yves

    1991-01-01

    Caring for dying patients and their families presents unique opportunities and challenges for the family physician. The family FIRO model provides a simple way of assessing families and providing appropriate, individualized care. This article outlines the model, discusses the care of dying patients and their families from the FIRO perspective, and provides a guideline for the family physician. A framework is suggested for teaching residents to support families. PMID:21228989

  14. Die Sauerstoffversorgung der Retina bei Knochenfischen

    OpenAIRE

    2001-01-01

    Das Vorkommen von über den Umgebungsdruck erhöhten Sauerstoffpartialdrucken in Geweben ist im Tierreich nur von der Schwimmblase und dem Auge von Knochenfischen bekannt. Die physiologischen Mechanismen dieser Sauerstoffkonzentrierung wurden an der Schwimmblase insbesondere des Aals intensiv untersucht, entsprechende Untersuchungen zu den Vorgängen im Auge der Knochenfische fehlen jedoch. In dieser Arbeit wurde daher eine Methode etabliert, mit der die Sauerstoffkonzentrierung im Auge der Kno...

  15. Lipidsenker bei Hypertonie - Was besagt die Evidenz?

    Directory of Open Access Journals (Sweden)

    Marte T

    2004-01-01

    Full Text Available Die Koexistenz von Risikofaktoren für atherosklerotische Prozesse, wie Hypertonie und Hypercholesterinämie, hat einen multiplikativen Effekt auf das Risiko kardiovaskulärer Ereignisse. Bislang wurden relativ wenige spezifische Daten zur Frage der Lipidintervention bei Hypertoniepatienten veröffentlicht. Post-hoc-Subgruppenanalysen der großen randomisierten kontrollierten Studien mit Statinen in der Primär- und Sekundärprävention lassen schließen, daß der relative kardiovaskuläre Benefit einer lipidsenkenden Behandlung bei normotensiven und hypertensiven Patientenpopulationen ähnlich ist. Dem Antihypertensive and Lipid-Lowering Treatment to Prevent Heart Attack Trial (ALLHAT-LLT war es nicht möglich, einen Einfluß einer Statintherapie auf die Gesamtmortalität einer hypertensiven Kohorte zu zeigen. Die schlechte Compliance im Statin-Arm und eine hohe Rate an Statin-Einnahme in der "Kontrollgruppe" waren für dieses negative Ergebnis verantwortlich. Das Anglo-Scandinavian Cardiac Outcomes Trial – Lipid Lowering Arm (ASCOT-LLA untersuchte den Effekt der cholesterinreduzierenden Therapie in der Prävention atherosklerotischer Ereignisse bei Hypertonikern mit Gesamtcholesterinkonzentrationen von 250 mg/dl. Hier war ein Benefit ersichtlich, die absolute Risikoreduktion für diese Patientenpopulation war jedoch gering. Bezüglich der Frage, ob Antihypertensiva einen klinisch signifikanten Effekt auf die Blutfette haben, sind einige Studien durchgeführt worden. Die verfügbaren Daten zeigen aber nur einen marginalen Effekt. Zusammengefaßt sollte die Statintherapie bei gleichzeitig vorhandener Hypertonie vornehmlich in der Sekundärprävention ein integraler Bestandteil der Behandlung sein. In der Primärprävention hingegen sollte die Entscheidung bezüglich Statintherapie vom individuellen Gesamtrisiko abhängig gemacht werden.

  16. Die Erfindung des „traditionellen Vaters“

    Directory of Open Access Journals (Sweden)

    Julia Nentwich

    2006-07-01

    Full Text Available In den meisten Diskussionen zum Thema ‚Vater‘ wird vom „traditionellen“ Vater gesprochen. Die Kritik, dass dabei nicht hinreichend geklärt wird, was damit jeweils gemeint ist und was sich hinter diesen Vorstellungen verbirgt, ist für Barbara Drinck Ausgangspunkt, verschiedene Vaterdiskurse zu analysieren. Sie untersucht in beeindruckender Detailgenauigkeit die wichtigsten Vatertheorien und Vaterbilder auf der Grundlage von pädagogischen, psychologischen und soziologischen Beiträgen der letzten 250 Jahre.

  17. Die Rolle der kommerziellen Akteure im Snowboardsport

    OpenAIRE

    2012-01-01

    Im Snowboardsport spielen kommerzielle Akteure für die informelle Organisation und das Funktionieren der Sportart eine bedeutende Rolle. Der Sport wird meist unabhängig von Vereinen und Verbänden in lokalen Gruppen von Gleichgesinnten betrieben und besitzt im Gegensatz zu klassischen Sportarten eine alternative Organisationsstruktur. Die kommerziellen Akteure springen in diese Lücke und versuchen mit Wettbewerben, Showevents und Snowparks Treffpunkte und Inhalt für Szeneanhänger zu kreieren. ...

  18. Die ASEAN als Impulsgeber ostasiatischer Integration

    OpenAIRE

    Loewen, Howard

    2006-01-01

    Auf dem 11. ASEAN-Gipfeltreffen im Dezember 2005 wurde beschlossen, der ASEAN eine Charta zu geben. Im Verbund mit ASEAN+3 und dem Ostasiengipfel deutet sich eine neue Ära der Kooperation an. Ferner wurde das ASEAN-Mitgliedsland Myanmar scharf kritisiert. Die ASEAN-Staatengemeinschaft ist der dynamische Bestimmungsfaktor regionaler Kooperation in Ostasien. Sie dominiert Institutionen wie das ASEAN Regional Forum (ARF), die ASEAN+3 und den Ostasiengipfel. (GIGA)

  19. Weltweite Migration und die Schließungstendenzen westlicher Industriegesellschaften

    OpenAIRE

    Bös, Mathias

    1995-01-01

    "Die Errichtung von Migrationsbarrieren und die Ethnisierung von Gesellschaften sind oft subkutan ablaufende gesellschaftliche Immunisierungsversuche. Es sind Prozesse, die ihren eigentlichen Entstehungsgrund nicht eliminieren, sondern die die seit der Aufklärung vom Westen ausgehenden Prozesse zunehmender Globalisierung und Fragmentierung eher verstärken. Blickt man auf die Interaktion zwischen Nationalstaaten und deren Interaktion mit globalen Systemen, so zeigt sich eine Zunahme der strukt...

  20. Die Evolution des Universums. Eine Geschichte der Kosmologie.

    Science.gov (United States)

    Hiller, H.

    This volume covers in an elementary course a historical overview on cosmology ranging from the ancient aspects up to big bang theory and the concepts of inflationary universe and grand unified theories. Contents: 1. Auf dem Wege zur Wissenschaft. 2. Die neue Kosmologie. 3. Die Struktur des Weltalls. 4. Dramatik im Weltall. 5. Die endliche Welt. 6. Die Evolution des frühen Universums. 7. Die Zukunft. 8. Die neue Teleologie. 9. Das Leben.

  1. Die hoogs-onversadigde vetsure: fisiologiese rol en kliniese moontlikhede

    OpenAIRE

    Haag, M.; M. Coetzee

    2006-01-01

    Vetsure speel ’n uiters belangrike rol in die fisiologie van die mens. Afgesien daarvan dat vetsure in gestoorde trigliseriede gebruik word vir energieverskaffing, word vetsure vanaf dieetlipiede in plasma vervoer en ingebou in verskeie sellulêre strukture. Die vetsuurprofiel van selmembraanfosfolipiede is bepalend by die funksie van die selmembraan daarin dat dit vloeibaarheid, reseptorfunksie en ook die tipe eikosanoïede wat daaruit gesintetiseer kan word, beïnvloed. Vetsure lewer ve...

  2. 'n Lewe met die vaders Oor Carl Borchardt as student van die vroee kerk

    Directory of Open Access Journals (Sweden)

    J.H. Ie Roux

    1995-09-01

    Full Text Available A life with the fathers Carl Borchardt's views on the early church This article focuses on Carl Borchardt's contribution to the study of the early church. Especially one aspect of his historical endeavours is highlighted: the close link between the Bible and church history. He illustrated how the early church lived from the Bible and how patristic theology was shaped fundamentally by the Bible. Because he was so wellequiped for the study of the early church Borchardt succeeded highlighting the beauty of patristic exegesis and opening up new ways� of understanding our religious past. Dit was in Julie 1968 dat ek Carl Borchardt vir die eerste keer ontmoet het. Professor Ben Marais was die semester weg en Borchardt moes die middeleeue en die reformasie aan ons doseer. Hy was inderdaad 'n uitstekende keuse. Pas twee jaar gelede het hy in Leiden by die befaamde Bakhuizen van den Brink gepromoveer. Sy proefskrif, Hilary of Poitier's role in the Arian struggle, was van so 'n gehalte dat dit in die reeks, Kerkhistorische Studien, opgeneem is. Borchardt was 'n uitnemende plaasvervanger vir Ben 1-farais. So ver ek egter kan onthou, was dosent Borchardt 'n bietjie skugter en manuskripgebonde, maar tog was daar iets in sy Iesings wat my na al die jare nog bybly: 'n deeglike kennis van en 'n vaardigheid met primere en sekondere bronne van die middeleeue en die reformasie. Nou nog onthou ek van die bronne wat hy met die oog op 'n Lutherstudie vermeld het. Drie jaar later was ons saam kollegas aan die Universiteit van Suid-Afrika. Borchardt was in aIle opsigte my senior, maar tog was hy 'n besondere kollega. Tydens daardie goeie Unisajare was ons dosentegetalle klein en gevolglik het ek Borchardt op 'n besondere manier leer ken. Talle gesprekke oor die kerkgeskiedenis het in sy kantoor of by die teekan plaasgevind. Toe hy in 1975 Unisa se diens verlaat en hom by die Universiteit van Pretoria aangesluit het, was dit 'n droewige dag. Vir my was dit egter 'n

  3. Celestial Fireworks from Dying Stars

    Science.gov (United States)

    2011-04-01

    This image of the nebula NGC 3582, which was captured by the Wide Field Imager on the MPG/ESO 2.2-metre telescope at ESO's La Silla Observatory in Chile, shows giant loops of gas bearing a striking resemblance to solar prominences. These loops are thought to have been ejected by dying stars, but new stars are also being born within this stellar nursery. These energetic youngsters emit intense ultraviolet radiation that makes the gas in the nebula glow, producing the fiery display shown here. NGC 3582 is part of a large star-forming region in the Milky Way, called RCW 57. It lies close to the central plane of the Milky Way in the southern constellation of Carina (The Keel of Jason's ship, the Argo). John Herschel first saw this complex region of glowing gas and dark dust clouds in 1834, during his stay in South Africa. Some of the stars forming in regions like NGC 3582 are much heavier than the Sun. These monster stars emit energy at prodigious rates and have very short lives that end in explosions as supernovae. The material ejected from these dramatic events creates bubbles in the surrounding gas and dust. This is the probable cause of the loops visible in this picture. This image was taken through multiple filters. From the Wide Field Imager, data taken through a red filter are shown in green and red, and data taken through a filter that isolates the red glow characteristic of hydrogen are also shown in red. Additional infrared data from the Digitized Sky Survey are shown in blue. The image was processed by ESO using the observational data identified by Joe DePasquale, from the United States [1], who participated in ESO's Hidden Treasures 2010 astrophotography competition [2]. The competition was organised by ESO in October-November 2010, for everyone who enjoys making beautiful images of the night sky using astronomical data obtained using professional telescopes. Notes [1] Joe searched through ESO's archive and identified datasets that he used to compose his

  4. Evaluation of porosity in Al alloy die castings

    Directory of Open Access Journals (Sweden)

    M. Říhová

    2012-01-01

    Full Text Available Mechanical properties of an Al-alloy die casting depend significantly on its structural properties. Porosity in Al-alloy castings is one of the most frequent causes of waste castings. Gas pores are responsible for impaired mechanical-technological properties of cast materials. On the basis of a complex evaluation of experiments conducted on AlSi9Cu3 alloy samples taken from the upper engine block which was die- cast with and without local squeeze casting it can be said that castings manufactured without squeeze casting exhibit maximum porosity in the longitudinal section. The area without local squeeze casting exhibits a certain reduction in mechanical properties and porosity increased to as much as 5%. However, this still meets the norms set by SKODA AUTO a.s.

  5. The death and dying process: definitions of nursing undergraduate students

    Directory of Open Access Journals (Sweden)

    Catarina Aparecida Sales

    2013-07-01

    Full Text Available The purpose of the study was to know the definitions nursing students have concerning the death-dying process. A descriptive-qualitative study developed in 2010, with 65 students of the first and last year of Nursing in a public university. Data was collected through semi-structured interview and submitted to content analysis. Data showed that the students possess diverse opinions concerning this process, per times seeing it as natural however difficult to be understood and accepted, especially because it brings pain, suffering, losses and family unstableness. They also revealed that they do not feel prepared to experience terminality in their future customers. The results reinforce the importance of having the thematic approached in the beginning of the undergraduate course, in curricular components or in extra-curricular activities, in order to provide the development of necessary support to experiencethe death-dying process of the customers.

  6. Eersteling - bakermat van die Suid-Afrikaanse goudmynbedryf.

    OpenAIRE

    Tempelhoff, Johann W N

    1981-01-01

    • Opsomming: Die Eersteling-goudveld in Noord- Transvaal. is van besondere belang in die geskiedenis van die Suid-Afrikaanse goudmynbedryf want dis die plek waar goud vir die eerste keer op groot skaal in Suid-Afrika ontgin is nadat dit in 1871 deur die prospekteerder Edward Button ontdek is. In 1872 het Button na Groot-Brittanje gegaan en die Transvaal Gold Mining Co. Ltd. gestig. Deur aandele te verkoop, het hy genoeg kapitaal verkry om die moderne toerusting te koop wa...

  7. Die inhoud en die doel van die Nederduitsch Hervormde Kerk se bediening, met verwysing na die ampte

    Directory of Open Access Journals (Sweden)

    J. H. Breytenbach

    1991-01-01

    Full Text Available The substance and purpose of the ministry of the Nederduitsch Hervormde Kerk, with reference to ecclesiastical offices. For close on a decade, the Nederduitsch Hervormde Kerk van Afrika has been debating the issue of appropriate structures and patterns for its ministry. In this article it is argued that the debate not only reflects dissatisfaction with structures and patterns, but also brings to light dissatisfaction with the substance and purpose of the ministry of the Word as such. The ministry of the church should be understood in the light of the essence of being a church, which resides in the fact that the church belongs to the Lord. It is possible to belong to the Lord only on the basis of faith in the Word of God. The church, therefore, has one ministry only: the ministry of the Word. Appropriate ecclesiastical offices, structures and patterns are those that minister the Word.

  8. Living until we die: reflections on the dying person's spiritual agenda.

    Science.gov (United States)

    Anderson, Herbert

    2006-03-01

    The spiritual agenda for the dying presumes a willingness to face the reality of imminent death. It also depends on support from caregivers who will encourage whatever agency is possible for the one who is dying. The spiritual practices that will enhance agency for the dying include remembering, thanking, relinquishing, waiting, and trusting. The absence of abandonment and the dependable presence of caregivers are essential to create communities and relationships in which hope can be found and sustained.

  9. Die integrasie van humoristiese tekste in die opleiding van taalonderwysstudente binne 'n konstruktivistiese paradigma

    Directory of Open Access Journals (Sweden)

    Estelle Kruger

    2011-08-01

    Full Text Available Die artikel beskryf ’n gevallestudie waarin humoristiese tekste in die onderrig van Afrikaans aan onderwysstudente geïntegreer is. Die betrokke navorsingsprogram is gebaseer op 'n onderrigprogram wat binne 'n konstruktivistiese paradigma ontwerp en aangebied is. Ná 'n literatuuroorsig van bestaande navorsing wat die aanwending van humor in onderrigsituasies regverdig, word die navorsingsmetode binne 'n kwalitatiewe raamwerk bespreek. Verskillende fases van die onderrigprogram geniet aandag, aangevul deur voorbeelde van onderrigmateriaal en -vrae om die leergebeure te fasiliteer. Laastens volg 'n bespreking van bevindinge wat uit die navorsingsprogram gespruit het, met spesifieke verwysing na die waarde van die skryf van limerieke en parodieë, asook webgebaseerde rolspeldebatte en virtuele kletskamers as deel van rekenaarondersteunde taalonderrig. Ter afronding word die deelnemende studente se refleksie en kommentaar op die onderrigprogram ook in aanmerking geneem. This article describes a case study in which humorous texts have formed part of the method of teaching Afrikaans course for education students. This particular research focuses on a teaching programme conceptualised and executed within a constructivist paradigm. A literature review of research on the use of humour in teaching purposes is followed by a description of the qualitative methodology used. Specific examples of the educational material used in the different phases of the teaching programme and the questions posed to facilitate the learning process are then provided. This is followed by a discussion of the results of the research programme, focusing on the value of writing limericks and parodies, as well as on web-based role-play and chatrooms forming part of computer-assisted language teaching. The article ends with reflection and commentary by the education students who participated in the research programme.

  10. Energy Saving Melting and Revert Reduction Technology (E-SMARRT): Mechanical Performance of Dies

    Energy Technology Data Exchange (ETDEWEB)

    R. Allen Miller, Principal Investigator; Kabiri-Bamoradian, Contributors: Khalil; Delgado-Garza, Abelardo; Murugesan, Karthik; Ragab, Adham

    2011-09-13

    As a net shape process, die casting is intrinsically efficient and improvements in energy efficiency are strongly dependent on design and process improvements that reduce scrap rates so that more of the total consumed energy goes into acceptable, usable castings. A casting that is distorted and fails to meet specified dimensional requirements is typically remelted but this still results in a decrease in process yield, lost productivity, and increased energy consumption. This work focuses on developing, and expanding the use of, computer modeling methods that can be used to improve the dimensional accuracy of die castings and produce die designs and machine/die setups that reduce rejection rates due to dimensional issues. A major factor contributing to the dimensional inaccuracy of the casting is the elastic deformations of the die cavity caused by the thermo mechanical loads the dies are subjected to during normal operation. Although thermal and die cavity filling simulation are widely used in the industry, structural modeling of the die, particularly for managing part distortion, is not yet widely practiced. This may be due in part to the need to have a thorough understanding of the physical phenomenon involved in die distortion and the mathematical theory employed in the numerical models to efficiently model the die distortion phenomenon. Therefore, two of the goals of this work are to assist in efforts to expand the use of structural modeling and related technologies in the die casting industry by 1) providing a detailed modeling guideline and tutorial for those interested in developing the necessary skills and capability and 2) by developing simple meta-models that capture the results and experience gained from several years of die distortion research and can be used to predict key distortion phenomena of relevance to a die caster with a minimum of background and without the need for simulations. These objectives were met. A detailed modeling tutorial was

  11. Die ontwerp van ’n digitale pedagogiese patroon vir die verbetering van leerders se mondelinge kommunikasievaardighede

    Directory of Open Access Journals (Sweden)

    Carina Grobler

    2016-09-01

    Full Text Available Suid-Afrikaanse voorgraadse vreemdetaalstudente het meer geleenthede nodig om hulle mondelinge kommunikasievaardighede te oefen. Nie net lewer die akademiese literatuur ‘n pleidooi vir meer klem op mondelinge vaardighede nie (Delena-le Roux 2010, dit is ook een van die sentrale gevolgtrekkings uit ’n opname onder beginnerstudente wat Frans neem by die Potchefstroomkampus van die Noordwes-Universiteit (Suid-Afrika. Dit was dus noodsaaklik om 'n onderrig- en leerervaring te ontwerp wat daarop gemik is om beginnerstudente se mondelinge kommunikasievaardighede in Frans te verbeter. Laurillard (2012 se Gespreksraamwerk was die inspirasie vir die ontwerp van 'n digitale pedagogiese patroon (DPP wat bestaan uit konteks en pedagogiese beskrywers ten einde vreemdetaalleerders se mondelinge vaardighede te ontwikkel. Die Gespreksraamwerk analiseer formele leer en die struikelblokke met die gebruik van nuwe tegnologieë in leer. Die implementeringsproses van ‘n DPP vir die ontwikkeling van die mondelinge vaardighede van studente (in Frans het drie siklusse, elk met sy eie uitkomste, en drie groepe deelnemers – die kontrolegroep en twee eksperimentele groepe – behels. Die toetsing van die voorgestelde DPP het belangrike insigte gebied wat geïntegreer behoort te word in die ontwerp van toekomstige digitale pedagogiese patrone vir die spesifieke konteks: deelnemersgroepe behoort tot twee beperk te word; leerervarings wat uitgevoer word tydens die beperkte onderrigtyd van ʼn semester behoort verminder te word; daar moet verseker word dat elke stap van die leerervaring voldoen aan die vereistes van die Gespreksraamwerk. Studente-uitslae van die leerervarings in toekomstige studies behoort te onthul watter siklus die beste bydra tot die verbetering van mondelinge kommunikasievaardighede.

  12. Die Krise in Venezuela - Prüfstein für die UNASUR

    OpenAIRE

    Hoffmann, Anne Marie; Mijares, Víctor M.

    2015-01-01

    Seit ihrer Gründung im Jahr 2008 setzt sich die südamerikanische Regionalorganisation UNASUR für Frieden, Menschenrechte und Demokratie auf dem Subkontinent ein. Es gelang der UNASUR, einige nationale wie regionale Konflikte zu entschärfen beziehungsweise zu lösen. Damit wurde die Erwartung geweckt, sie werde auch künftig südamerikanische Probleme souverän und autonom bewältigen. In der aktuellen venezolanischen Krise stößt die UNASUR jedoch an ihre Grenzen. Ihre Legitimität wird auf die Prob...

  13. 'n Ondersoek na die potensiaal-bepaling van werknemers in die landbousektor.

    Directory of Open Access Journals (Sweden)

    J. C. D. Augustyn

    1989-05-01

    Full Text Available An investigation into determining the potential of workers in the agricultural sector. Industrial Psychological principles and concepts are not being applied extensively in the agricultural sector. Against this background an attempt was made to scientifically identify potential and predict job performance amongst farm labourers. Using the PAQ method of job analysis, critical attributes were identified and a satisfactorily valid battery of tests was developed. The results of this study underlines the importance of the identification of the potential of farm labourers as a first step in the personnel management process. It also serves as a source of information that could be used by farmers for counselling purposes. Opsomming Wat die toepassing van Bedryfsielkundige beginsels en konsepte betref bestaan daar in die landboubedryf nog groot leemtes. Teen hierdie agtergrond is 'n poging aangewend om op 'n wetenskaplike wyse die potensiaal van plaasarbeiders te bepaal. Deur middel van die WOV-metode van posontleding is kritieke attribute by workers geidentifiseer en kon 'n toetsbattery met aanvaarbare geldigheid saamgestel word. Die resultate van die studie bevestig dat die identifisering van die potensiaal van plaaswerkers 'n noodsaaklike eerste stap in die personeelbestuursproses is. Dit kan ook met groot vrug as voorligtingshulpmiddel deur boere gebruik word.

  14. Kennisbasisse, gebruikspatrone en gebruikshindernisse ten opsigte van die riglyne vir die ontwikkeling en validering van personeelkeuringsprosedures

    Directory of Open Access Journals (Sweden)

    M. Boolsen

    1996-06-01

    Full Text Available The guidelines for the validation and use of personnel selection procedures: knowledge, usage and obstacles. Selection is a key human resources function in any organization. Expected changes in South African Labour Law combined with the importance of advancing organizational efficiency lead in 1992 to the publication of the Guidelines on the Development and Validation of Personnel Selection Procedures. The study in question is aimed at a description of the current knowledge base, usage patterns and usage obstacles vis-a-vis the Guidelines of a specific group of human resource specialists in South Africa. Recommendation based on the research findings are made. Opsomming Keuring is 'n sleutel menslike hulpbronbestuursfunksie in enige onderneming. Verwagte veranderinge in Suid-Afrikaanse Arbeidswetgewing en die noodsaaklikheid van die bevordering van organisatoriese doeltreffendheid lei in 1992 tot die publikasie van die Riglyne vir die Ontwikkeling en Validering van Personeelkeuringsprosedures. Die onderhawige studie is gerig op 'n beskrywing van die heersende kennisbasisse, gebruikspatrone en gebruiks- hindernisse vis-a-vis die Riglyne by 'n spesifieke groep menslike hulpbronkundiges in Suid-Afrika. Aanbevelings word op grond van die bevindinge gemaak.

  15. Die Berufung von Hermann Helmholtz an die Universität in Heidelberg

    OpenAIRE

    Werner, Franz

    2011-01-01

    Aus Briefen und unveröffentlichten Dokumenten können wir die langen und schwierigen Verhandlungen rekonstruieren, die zu Helmholtz' Berufung an die Universität Heidelberg und später zu seiner Berufung nach Berlin führten. Bereits 1851 hoffte Helmholtz auf eine Heidelberger Berufung. Jedoch wurde aus diesen Plänen nichts, als sein Fürsprecher J. Henle 1852 Heidelberg verließ. Erst 1857 nahm die Regierung des Großherzogs von Baden wieder Berufungsverhandlungen mit Helmholtz auf. Es war ha...

  16. Aantekeninge oor Die ryk van die rawe deur Jaco Fouché

    Directory of Open Access Journals (Sweden)

    N. Kruger

    2003-08-01

    Full Text Available Notes on Jaco Fouché’s novel Die ryk van die rawe Jaco Fouché’s debut novel Die ryk van die rawe (The domain of the ravens has been widely acclaimed by critics. Their focus mainly fell on the intertextual relations of the novel with other literary texts, especially novels by Etienne Leroux. This article analyses Fouché’s novel against the backdrop of the (satirical picaresque tradition and the detective genre. The article focuses on two aspects: Fouché’s indebtedness to (postmodern art forms, particularly comics, graphics, television and cinema; and the interpretation of neo-existentialist philosophy.

  17. Die voorsienigheidsleer van Calvyn: Uit sy debatte

    Directory of Open Access Journals (Sweden)

    Morné Diedericks

    2014-09-01

    Full Text Available Calvyn se leer van God se voorsienigheid is ongetwyfeld een van die mees kontroversiële onderwerpe van sy teologie. Dit word duidelik in al die debatte waarin Calvyn sy leer oor die voorsienigheid moes verdedig, byvoorbeeld teen Pighius, Bolsec, Bullinger en Castellio. Vyfhonderd jaar later word Calvyn weer in die openbaar oor sy voorsienigheidsleer aangeval deur ’n Suid-Afrikaanse teoloog, Adrio König. Calvyn se antwoord op Castellio in Die verborge voorsienigheid van God is duidelik nie deur König in ag geneem nie. In Calvyn se verdediging van sy voorsienigheidsleer verwerp hy nooit die soewereiniteit van God nie, maar gee ook nie vir God die skuld vir die kwaad nie – ’n beskuldiging wat Castellio en König teen Calvyn inbring. Die troos van God se voorsienigheid lê vir Calvyn juis daarin dat God alle dinge, ook teenspoed en verdrukking, deur sy verborge voorsienigheid beskik met die doel om sy kinders nader na Hom te lei. Calvin’s teaching on providence: From his debates. Calvin’s teaching on God’s providence is without doubt one of the most controversial subjects in his theology. This is clear in all the debates in which Calvin had to defend his teaching on providence, against, for example, Pighius, Bolsec, Bullinger and Castellio. Five hundred years later Calvin has again been publicly attacked on his teaching on providence by a South African theologian, Adrio König. König, however, did not consider Calvin’s response to Castellio in The secret providence of God. In Calvin’s defence of his teaching on providence he in no circumstances denies the sovereignty of God, but also does not give God the blame for any ills that might result – an accusation that Castellio and König levied against him. For Calvin, the consolation of God’s providence rests in the fact that God ordains all things, including adversity and affliction, through his secret providence for the purpose of leading his children closer to him.

  18. Prediking aan die hand van die metafoor van fiksieskryf

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    Lourens Bosman

    2008-01-01

    Full Text Available Preaching according to the metaphor of fiction writing In this article the writers propose an alternative to modernistic linear and propositional ways of preaching. They argue that the context asks for preaching that is more in line with the dominant metaphors of the post-modern culture in which the listeners live their everyday lives. The preacher should be seen less as the bearer of final truths (the one who carries the light or acts as witness to the truth, and more as someone who participates in the reflection of ideas. They propose a narrative paradigm for preaching that moves beyond the use of stories as illustrations, to one where the preacher, in the narrative style, becomes the co-author of new life stories in the preaching event. The ABDCE model for fiction writing, proposed by Anne Lamott, is then used as a model for the structuring of the sermon. Structured along these lines, the sermon moves from a specific Action and its cultural and historical Background, through a Development, where something new starts to unfold before the listeners, to a Climax of new insight and an Ending that invites the listeners to take part in the telling and retelling of their own stories in the light of the Great Story of God and his people.

  19. Toward a chemical mechanism of proton pumping by the B-type cytochrome c oxidases: application of density functional theory to cytochrome ba3 of Thermus thermophilus.

    Science.gov (United States)

    Fee, James A; Case, David A; Noodleman, Louis

    2008-11-12

    A mechanism for proton pumping by the B-type cytochrome c oxidases is presented in which one proton is pumped in conjunction with the weakly exergonic, two-electron reduction of Fe-bound O 2 to the Fe-Cu bridging peroxodianion and three protons are pumped in conjunction with the highly exergonic, two-electron reduction of Fe(III)- (-)O-O (-)-Cu(II) to form water and the active oxidized enzyme, Fe(III)- (-)OH,Cu(II). The scheme is based on the active-site structure of cytochrome ba 3 from Thermus thermophilus, which is considered to be both necessary and sufficient for coupled O 2 reduction and proton pumping when appropriate gates are in place (not included in the model). Fourteen detailed structures obtained from density functional theory (DFT) geometry optimization are presented that are reasonably thought to occur during the four-electron reduction of O 2. Each proton-pumping step takes place when a proton resides on the imidazole ring of I-His376 and the large active-site cluster has a net charge of +1 due to an uncompensated, positive charge formally associated with Cu B. Four types of DFT were applied to determine the energy of each intermediate, and standard thermochemical approaches were used to obtain the reaction free energies for each step in the catalytic cycle. This application of DFT generally conforms with previously suggested criteria for a valid model (Siegbahn, P. E. M.; Blomberg, M. A. R. Chem. Rev. 2000, 100, 421-437) and shows how the chemistry of O 2 reduction in the heme a 3 -Cu B dinuclear center can be harnessed to generate an electrochemical proton gradient across the lipid bilayer.

  20. Mit Webinaren die Bildung öffnen

    Directory of Open Access Journals (Sweden)

    David Röthler

    2015-03-01

    Full Text Available David Röthler von WerdeDigital.at zeigt in seinem Beitrag die Vorteile und Einsatzmöglichkeiten von Webinaren auf. Dabei geht sein Beitrag davon aus, dass offen zugängliche Bildung – zumindest auf EU-Ebene – zu einem deklariert politischen Ziel erklärt worden ist. Offen zugängliche Bildung ist – zumindest auf EU-Ebene – zu einem politischen Ziel erklärt worden. Zentral in dieser Hinsicht ist die Mitteilung der EU-Kommission vom 25.9.2013: "Die Bildung öffnen: Innovatives Lehren und Lernen für alle mithilfe neuer Technologien und frei zugänglicher Lehr- und Lernmaterialien." In dieser Erklärung wird insbesondere auf MOOCs und OER eingegangen. Der Begriff MOOC (Massive Open Online Course beschreibt große, für alle zugängliche Onlinekurse. Unter OER (Open Educational Resources werden offene, frei kopier- und üblicherweise auch veränderbare Bildungsmaterialien verstanden. Im Detail wird in dieser Mitteilung die Förderung hochwertiger, innovativer Lehr- und Lernmethoden mithilfe neuer Technologien und digitaler Inhalte beschrieben. Es werden Maßnahmen für offenere Lernumgebungen vorgeschlagen, die Bildung verbessern und effizienter gestalten sollen: wie viele Vorhaben im Bereich der Bildungspolitik, soll auch durch offene Bildung ein Beitrag zur Erreichung der Europa-2020-Ziele geleistet werden: Steigerung der Wettbewerbsfähigkeit und des Wachstums in der EU durch besser ausgebildete Arbeitskräfte. Es wird aber nicht nur auf die wirtschaftlichen Ziele eingegangen. Auch die "Gerechtigkeitswirkung" des erweiterten Zugangs "für benachteiligten Gruppen" bei sinkenden Kosten durch den Einsatz offener Ressourcen und neuer Technologien findet Erwähnung. Voraussetzung dafür seien aber "nachhaltige Investitionen in Bildungsinfrastrukturen und Humanressourcen".

  1. DEPOSITION OF TiBN HARD FILMS ON HOT-WORKING-STEEL DIES FOR ALUMINIUM EXTRUSION VIA A DUPLEX PROCESS

    Institute of Scientific and Technical Information of China (English)

    K. MUller

    2001-01-01

    Hot working steels have been used as die materials for hot extrusion of aluminium.Due to tribological interaction at elevated temperature between the die bearing and thesurface of extruded aluminium profiles, not only the surface quality of the extrudedproduct, but also the lifetime of the dies decreases. Deposition of TiBN hard films onthe die bearing could improve the die performance. Treatment should be done in aduplex process process combining a plasma nitriding pretreatment (PN) and a plasmaassisted chemical vapour deposition (PACVD) of TiBN. In this study the influence ofthe process conditions on the properties of the duplex coatings was investigated. Therelationship between structure and mechanical property was researched. For testingthese TiBN hardfilms under elevated temperature conditions and for comparison withother possible coatings special extrusion dies with different coated bearings were used.The extrusion trials were performed on the 8MN-extrusion press at the research anddevelopment center for extrusion, Technical University of Berlin.

  2. DIE WEERMAG AS ONTWIKKELINGINSTRUMENT IN DIE DERDE WÊRELD

    Directory of Open Access Journals (Sweden)

    F.C. De Beer

    2012-02-01

    Full Text Available In many Third World developing countries the military structure is a more organised, progressive, technically advanced institution than the civilian administrative bureaucracy. Here the soldier is weaned from his overriding sense of tribal identity is trained in a national citizenship gains the necessary self-confidence to be of use in facing the tensions and problems inherent in the struggle for greater development. and receives some measure of technical training. In many recently independent African countries the ineffectiveness of civilian bureaucracies has precipitated military involvement in national government. The writer of this article comments on this kind of military role and on the effectiveness of military involvement in fostering economic and political development. By means of comparison he touches on the role of the South African Defence Force in the development of the Caprivi and Kavango areas of South West Africa.

  3. Temperature change and stress distribution analysis of die surface in Al-alloy die casting process and experimental study on die heat check

    Institute of Scientific and Technical Information of China (English)

    Hu Xinping; Zhao Guoqun; Wu Bingyao

    2008-01-01

    The temperature change of the die surface in practical aluminum alloy die casting process was analyzed,and a 2D model was formulated on the basis of a deep concave round cavity without sliding core to analyze the stress distributions along the die surface in detail. Equipment was designed to test the thermal state of the die steel in different thermal loading conditions. The results of stress analysis showed that, the value of thermal stress (maximum 1.5 GPa) caused in the die filling and die spraying stages was larger than the mechanical stress (maximum 85 MPa)caused in the die locking stage. The results of the thermal check experiment showed that there were three stages of die dissolving, and that the stress distribution shown by the samples' cracking routine was close to the die surface stress analysis.

  4. Die plek en funksie van die Heidelbergse Kategismus in ’n omkeerstrategie in die Gereformeerde Kerke in Suid-Afrika

    Directory of Open Access Journals (Sweden)

    Callie F.C. Coetzee

    2014-03-01

    Full Text Available Die herdenking van die 450 jarige bestaan van die Heidelbergse Kategismus (1563−2013 is ’n baie besondere geleentheid. Dit is ’n geleentheid om ons in die ryke erfenis van die 16de-eeuse Reformasie te verheug. Dit is ook ’n geleentheid om met die oog op die toekoms van kerkwees oor die relevansie, handhawing en belewing van hierdie erfenis te besin. Wat die Gereformeerde Kerke in Suid-Afrika betref, word hierdie besinning oor die plek en funksie van die Heidelbergse Kategismus (HK in besonder in hierdie artikel gedoen in die lig van die sogenaamde omkeerstrategie waarop die Algemene Sinode van 2012 besluit het. Deputate wat die volgende sinode moet adviseer, het onder andere die opdrag om ’n studie te doen ‘… van die suiwerheid en toepaslikheid van die leer wat op elke vlak verkondig word, asook hoe dit verder uitgebou kan word’. In die artikel word beredeneer dat die volgende sake in die besinning oor ’n omkeerstrategie vir ’n kerkgemeenskap in die reformatoriese tradisie aandag sal moet ontvang: Die wese van die kerk, kerk en belydenis en die belydenis as deel van die wese van die kerk. Wat die HK in besonder betref, word aandag gegee aan die unieke aard daarvan, die kategismusprediking en die apologetiese en missionale gerigtheid daarvan omdat dit ’n belangrike onderdeel van die werk van bogenoemde deputate vorm. Die artikel word afgesluit met enkele slotopmerkings en ‘aanbevelings’ dat opnuut oor die kategismusprediking besin word en dat die handhawing van die belydenis in enige omkeerstrategie ononderhandelbaar is.The place and function of the Heidelberg Catechism in a ‘turn-around’ strategy within the Reformed Churches in South Africa. The commemoration of the 450th year of the Heidelberg Catechism (1563−2013 is a special occasion worldwide. It is an opportunity to experience gratitude and joy for the rich heritage of the 16th-century Reformation. It is also an opportunity to reflect on maintaining and

  5. Effect of Carburizing and Hardening Temperature on the Endurance of Forming Dies from Steel R6M5

    Science.gov (United States)

    Stepankin, I. N.; Ken'ko, V. M.; Boiko, A. A.

    2013-07-01

    Results of a study of the effect of carburizing of the forming surfaces of cold upset dies from high-speed steel R6M5 and of the hardening temperature on the structure and properties of the dies are presented. It is shown that the hardness and endurance of the carburized tools can be raised by hardening from lower temperatures.

  6. High-performance α-Fe/Pr2Fe14B-type nanocomposite magnets fabricated by direct melt spinning

    Institute of Scientific and Technical Information of China (English)

    YANG Bai; ZHANG Lei; SHEN Baogen; ZHAO Tongyun; YU Ronghai

    2013-01-01

    High-performance α-Fe/Pr2Fe14B-type nanocomposite magnets based on the compositions of Pr8Fe86B6 microalloyed with Co,Nb and C were fabricated by direct melt spinning.The coercivity was greatly improved from 5.5 kOe for the Pr8Fe86B6 ribbons to 7.4 kOe for the Pr8Fe85NbB5C ribbons.The balanced high coercivity and remanence were obtained in Pr8Fe75Co10NbB5C ribbons due to the Co substitution for Fe,which led to the significant improvement of magnetic properties in these ribbons.A remanence ratio of 0.82,a coercive field of 6.6 kOe and a maximum energy product of 26.2 MGOe in melt-spun Pr8Fe75Co10NbB5C ribbons were obtained at room temperature.

  7. B-type Natriuretic Peptide Assay in Differentiating Congestive Heart Failure from Lung Disease in Patients Presenting with Dyspnea.

    Science.gov (United States)

    Islam, M A; Bari, M S; Islam, M N; Bari, M A; Siddique, S R; Islam, M Z; Begum, M S; Ahammed, S U; Rahman, M A

    2016-07-01

    This cross-sectional analytical study was conducted in Cardiology & Medicine Department of Mymensingh Medical College Hospital. After fulfilling the exclusion & inclusion criteria, B-type natriuretic peptide concentrations were measured in a convenience sample of 100 predominantly male (94%) dyspnic patients who got admitted in Cardiology & Medicine Department of Mymensingh Medical College & Hospital from November 2013 to October 2014. The diagnosis of Congestive Heart Failure (CHF) was based on generally accepted Framingham criteria with corroborative information including hospital course (response to diuretics, vasodilators, inotropes or hemodynamic monitoring) and results of further cardiac testing, including echocardiography. Patients with right heart failure from cor pulmonale were classified as having CHF. Pulmonary disease was confirmed by using the following diagnostic tools: i) A chest X-ray without signs of heart enlargement or pulmonary venous hypertension or a chest X-ray with signs of chronic obstructive lung disease, ii) Normal heart function as seen by echocardiography, iii) Abnormal pulmonary function tests or follow-up results and iv) A positive response to treatment with steroids, nebulizers or antibiotics in hospital. Patients with CHF (n=50) had mean BNP level 1146.72pg/ml (range 103 to 5000pg/ml), which is significantly higher than the group of patients with a final diagnosis of pulmonary disease (n=50) whose BNP was 34pg/ml (range 10 to 90pg/ml) (pcongestive heart failure from lung disease in patients presenting with dyspnea.

  8. The IACOB project: III. New observational clues to understand macroturbulent broadening in massive O- and B-type stars

    CERN Document Server

    Simón-Díaz, S; Castro, N; Herrero, A; Aerts, C; Puls, J; Telting, J; Grassitelli, L

    2016-01-01

    We aim to provide new empirical clues about macroturbulent spectral line broadening in O- and B-type stars to evaluate its physical origin. We use high-resolution spectra of ~430 stars with spectral types in the range O4-B9 (all luminosity classes). We characterize the line-broadening of adequate diagnostic metal lines using a combined FT and GOF technique. We perform a quantitative spectroscopic analysis of the whole sample using automatic tools coupled with a huge grid of FASTWIND models. We also incorporate quantitative information about line asymmetries to our observational description of the characteristics of the line-profiles, and present a comparison of the shape and type of line-profile variability found in a small sample of O stars and B supergiants with still undefined pulsational properties and B main sequence stars with variable line-profiles. We present a homogeneous and statistically significant overview of the (single snapshot) line-broadening properties of stars in the whole O and B star doma...

  9. Narratiwiteit en die Ou Testament

    Directory of Open Access Journals (Sweden)

    J. Marais

    1993-01-01

    Full Text Available Narrativity in the Old Testament The epistemological status of the narrative as a mode of communication in the Old Testament is the issue in this article. It is argued that the narrative was deliberately chosen as a means of communication because ontologically it is a mode of existence, interpretation and familiarization. In the article the fiction-versus-fact debate is broadly discussed. A textual approach, in which the semiotic value of the specific structuring of the narrative discourse is adequately acknowledged, is put forward.

  10. Diagnostic imaging of orofacial malformations; Bildgebung fuer die Therapieplanung von orofazialen Malformationen

    Energy Technology Data Exchange (ETDEWEB)

    Spitzer, W.J. [Klinik und Poliklinik fuer Mund-, Kiefer-, Gesichtschirurgie, Erlangen-Nuernberg Univ., Erlangen (Germany)

    1996-03-01

    Two-dimensional conventional X-rays and computer tomographic imaging systems contribute to the diagnosis and surgical planning of patients with orofacial malformations. The ability to reformat CT scans into three-dimensional osseous and soft tissue surface images has a significant impact on the diagnosis and management of orofacial malformations. Cephalometric evaluation with teleradiography provides precise insight into both the skeletal structures and the soft parts, enabling the radiologist to assess the relationship among the different parts in a given subject, at any given time and in relation to the normal. (orig.) [Deutsch] Konventionelle Roentgenaufnahmen und v.a. die Computertomographie ermoeglichen eine exakte Diagnose orofazialer Malformationen. Die zusaetzlichen technischen Applikationen der Computertomographie, wie z.B. dreidimensionale Rekonstruktion knoecherner und weichteiliger Oberflaechen oder das Suture enhancement bzw. die Exartikulation des Unterkiefers, erleichtern v.a. bei komplexen Malformationen das raeumliche Verstaendnis. Die kephalometrische Analyse anhand von Fernroentgenaufnahmen erleichert die Objektivierung des subjektiven Eindruckes durch die Erfassung von Strecken, Winkelwerten und Verhaeltnisangaben und deren Vergleich mit den an einer Normalpopulation gefundenen Werten. Die Panoramaschichtaufnahme ermoeglicht eine ueberlagerungsfreie Darstellung des gesamten Unterkiefers und angrenzender Regionen des Oberkiefers. (orig.)

  11. Weibliche Perversion und die Verleugnung des Phallus

    Directory of Open Access Journals (Sweden)

    Monika Gsell

    2003-11-01

    Full Text Available Genauso wie Aggression und Gewalt bis heute fast ausschließlich als spezifisch männliches Phänomen behandelt werden, wurde im klinischen Kontext auch die sexuelle Perversion lange Zeit als Pathologie verstanden, von der ausschließlich Männer betroffen sind. Welldons Studie öffnet uns den Blick für die spezifisch weiblichen Formen von Perversion. Der augenfälligste Unterschied zwischen der weiblichen und der männlichen Perversion liegt in der Richtung des aggressiven Impulses: Während der Mann die Aggression nach außen wendet, wendet die Frau sie gegen den eigenen Körper – und dessen Produkte, die Kinder. Konkret: Frauen hungern sich zu Tode, fügen sich selbst Verletzungen zu oder suchen sich dazu gewalttätige Partner, lassen sich schwängern, um den Fötus (als Teil ihrer selbst abzutreiben, oder behandeln ihre geborenen Kinder genau so wie ihren Körper: als leblosen, entmenschlichten Gegenstand. Weshalb das so ist, vermag uns Welldon leider nicht überzeugend zu erklären.

  12. Das Urheberrecht prallt auf die remix generation

    Directory of Open Access Journals (Sweden)

    Christian Berger

    2011-03-01

    Full Text Available LehrerInnen sind ehrenhafte Menschen, die sich bemühen, keine Rechtsverstöße zu machen. Allerdings macht das geltende Urheberrecht dies sehr schwer. Die nächste Generation hat da ohnehin schon eine ganz andere Praxis. Eigentlich beginnt es oftmals ganz harmlos und mensch selbst hat dabei weder böse Hintergedanken noch kommerzielle Interessen. Eine Lehrerin möchte ein Arbeitsblatt herstellen. Schnell mal ins Internet und ein geeignetes Foto zur Illustration suchen. Download öffnen und … naja, eigentlich könnte ich da doch schnell noch eine Kleinigkeit dazu ergänzen, dann würde das optimal passen. Gesagt, getan. Im Bildbearbeitungsprogramm ist die Sache in fünf Minuten erledigt. Reinkopieren ins Arbeitsblatt. Fertig. Morgen noch in der Schule ausdrucken und kopieren. Den SchülerInnen gefällt das und sie sind motiviert, das Blatt auszufüllen. Die Lehrerin hat allerdings eine Rechtsverletzung begangen und wäre dafür auch gerichtlich verfolgbar.

  13. Compassionate community networks: supporting home dying.

    Science.gov (United States)

    Abel, Julian; Bowra, Jon; Walter, Tony; Howarth, Glennys

    2011-09-01

    How may communities be mobilised to help someone dying at home? This conceptual article outlines the thinking behind an innovative compassionate community project being developed at Weston-super-Mare, UK. In this project, a health professional mentors the dying person and their carer to identify and match: (a) the tasks that need to be done and (b) the members of their social network who might help with these tasks. Network members may subsequently join a local volunteer force to assist others who are network poor. Performing practical tasks may be more acceptable to some family, friends and neighbours than having to engage in a conversation about dying, and provides a familiarity with dying that is often lacking in modern societies, so in this model, behavioural change precedes attitudinal change. The scheme rejects a service delivery model of care in favour of a community development model, but differs from community development schemes in which the mentor is a volunteer rather than a health professional, and also from those approaches that strive to build community capacity before any one individual dying person is helped. The pros and cons of each approach are discussed. There is a need for evaluation of this and similar schemes, and for basic research into naturally occurring resource mobilisation at the end of life.

  14. Oorsprong van die drievoudige struktuur van die Heidelbergse Kategismus

    Directory of Open Access Journals (Sweden)

    Wim Dreyer

    2016-04-01

    Full Text Available The Heidelberg Catechism was one of many catechisms that originated during the 16th-centuryReformation. It is also known that the authors of the Heidelberg Catechism made use of existingcatechisms. The content of 16th-century catechisms consisted mainly of the Decalogue, theApostolicum and the Lord’s Prayer. The Heidelberg Catechism starts with the famousintroduction, dealing with man’s only comfort, and in three sections with knowledge of our sinand misery, knowledge of our deliverance, and knowledge of how we should be grateful forour deliverance. This contribution points out that the threefold structure of the HeidelbergCatechism is not unique, but appeared in different ways in different catechisms of prominent16th-century reformers. It is also argued that the Heidelberg Catechism should be read againstLutheran and Calvinistic backgrounds. Finally, it is shown that the Heidelberg Catechismarticulated the basic Christian faith in such a beautiful and poignant manner that it stood thetest of time as a catechism and confession.

  15. Die devitaliseringsdialektiek van die skool: enkele fundamentele probleme

    Directory of Open Access Journals (Sweden)

    J. H. de Villiers

    1992-03-01

    Full Text Available Historically the school has been subject to a de-/vitalizing power-play fulfilled through the manipulative power of holders of power under the primacy of a specific religious ground motif The result has been that the school is seemingly experiencing an identity crisis because of the incomplete definition of its task of educative teaching, because man/power-holders have historically been wont to regard himself/themselves as the justified determiner of meaning of his/their structures. Subsequently the school's foundational function, its destinational function and its sphere of competence have been defined by way of apostatic ground motifs and secular points of departure. Thus the school has been subjected to a never-ending, self-denying bipolar play of power which can be self-undermining. While no power-play can be driven to its fullest consequences, 1school reforms* have been self-abortive in nature. There is therefore the demand to provide the school with a stable value system which for the Christian is situated in the creation-fall-redemption religious ground motif which places man in a radical Creator-creature relationship.

  16. Die sing van psalms in die erediens: Twintig jaar later

    Directory of Open Access Journals (Sweden)

    Jacoba H. van Rooy

    2011-03-01

    Full Text Available About 20 years ago the HSRC (Human Sciences Research Council conducted an empirical investigation on the singing of psalms in three Afrikaans reformed churches. Vos and M�ller (1990 dealt with different aspects of this investigation, especially the questions of which melodies are sung in the churches, what the frequency of the use of the different psalms is, the way in which new songs are introduced, the situation in the different churches and the influence of church attendance on the love of the psalms. In an investigation undertaken in 2008 (Van Rooy 2009 these matters were investigated in the Reformed Churches in South Africa, a denomiation that introduced a new hymnal in 2003. The comparison of the two investigations revealed that the number of favourite psalms and the same psalms remained fairly constant. The acceptance of new hymns is related to a number of factors, especially the melody and the liturgical usefulness of the new hymns. The new metrical version of the psalms is still not used very frequently in the Reformed Churches in South Africa. This can partly be ascribed to the lack of structured programmes to learn the new hymns.

  17. Die plek en funksle van bestuur in die kerk

    Directory of Open Access Journals (Sweden)

    A.A. van den Berg

    1999-03-01

    Full Text Available The place and function of management in the churchIn this article attention is given to general management as a solution to the current management problem in congregations. Management as a science is not unfamiliar in the church, but it has merely been neglected. The meaning of the term “church" as used in both the Old Testament and the New Testament is examined. Management within the church will have to uphold the nature, being, character, purpose and structure of the congregation according to the Word of God. Management will have to be a process by which believers continuously engage in congregational activities, try to use human and other resources as efficiently as possible, in order to fulfil all the ministry needs o f the congregation and to achieve specific goals. To be able to achieve this, the basic management tasks of planning, organising, activating and controlling have to be undertaken. The church should apply management principles to enable the church to become what it should be according to the will/intention of God.

  18. High pressure die casting of Fe-based metallic glass

    Science.gov (United States)

    Ramasamy, Parthiban; Szabo, Attila; Borzel, Stefan; Eckert, Jürgen; Stoica, Mihai; Bárdos, András

    2016-10-01

    Soft ferromagnetic Fe-based bulk metallic glass key-shaped specimens with a maximum and minimum width of 25.4 and 5 mm, respectively, were successfully produced using a high pressure die casting (HPDC) method, The influence of die material, alloy temperature and flow rate on the microstructure, thermal stability and soft ferromagnetic properties has been studied. The results suggest that a steel die in which the molten metal flows at low rate and high temperature can be used to produce completely glassy samples. This can be attributed to the laminar filling of the mold and to a lower heat transfer coefficient, which avoids the skin effect in the steel mold. In addition, magnetic measurements reveal that the amorphous structure of the material is maintained throughout the key-shaped samples. Although it is difficult to control the flow and cooling rate of the molten metal in the corners of the key due to different cross sections, this can be overcome by proper tool geometry. The present results confirm that HPDC is a suitable method for the casting of Fe-based bulk glassy alloys even with complex geometries for a broad range of applications.

  19. Professionalisme met verwysing na die posisie van bedryfsielkunde en die bedryfsielkundige in Suid-Afrika

    Directory of Open Access Journals (Sweden)

    A. van der Merwe

    1981-11-01

    Full Text Available Industrial Psychology, as a relatively new but fast-growing science is evaluated on the basis of six criteria for a profession. Results in this regard indicate that for a number of years the discipline has been in the process of evolving into a full-fledged profession and that this process has made advancement along the professional continuum. Further investigations regarding the professional training, the statutory organising of Industrial Psychology as well as a professional code and association for Industrial Psychology are needed in order to fully consolidate the professional status of the discipline.OpsommingBedryfsielkunde, as relatief jong maar snelgroeiende wetenskap, word aan die hand van ses kriteria vir 'n professie evalueer. Resultate in hierdie verband dui in die algemeen daarop dat die vakgebied alreeds vir 'n aantal jare in 'n oorgangsfase tot ‘n volwaardige professie is en dat daar in hierdie proses reeds ver op die professionele kontinuum gevorder is. Verdere onder-soeke ten opsigte van professionele opleiding, die statutêre organisering van Bedryfsielkunde asook 'n professionele kode en vereniging vir die Bedryfsielkunde word bepleit ten einde die professionele posisie van die vakgebied volledig te konsolideer.

  20. Die Geburt des Kosmos aus dem Nichts die Theorie des inflationären Universums

    CERN Document Server

    Guth, Alan

    2002-01-01

    Selten wird die Wissenschaft über Nacht so stark revolutioniert wie die Kosmologie durch Alan Guths Entdeckung der inflationären Theorie des Universums. Noch seltener gelingt es dem Urheber einer solchen Revolution, eine derart verständliche und einprägsame Darstellung von einer der aufregendsten Epochen in der modernen Kosmologie zu geben. Sogar Kenner werden Neues lernen.

  1. Johannes die doper (II: Sy prediking en Doop.

    Directory of Open Access Journals (Sweden)

    W. J. Snyman

    1959-03-01

    Full Text Available In die vorige artikel is getrag om belyning te gee aan hierdie groot gestalte aan die wending van die eeue, deur Christus genoem die grootste van alle mensekinders. In wat volg word dieselfde gedoen met betrekking tot sy optrede.

  2. Christelike Hoër onderwys en die Natuurwetenskappe

    Directory of Open Access Journals (Sweden)

    J. S. van der Merwe

    1938-03-01

    Full Text Available Dit is van belang dat met hierdie mylpaal in die geskiedenis van die P.U.K. vir C.H.O. teruggeblik word op die ontwikkelingsgang van die natuurwetenskappe aan genoemde inrigting en verantwoording in verband met toekomsideale gedoen word.

  3. Teilansicht der Universitätssternwarte Wien: Die Wiener Sternwarte

    OpenAIRE

    Kerschbaum, Franz

    2005-01-01

    Die Detailansicht zeigt den Eingangsbereich mit seinem großen Glasdach. Süden ist rechts. Unter dm Glasdach befindet sich die große Treppe, über die man in die eigentliche Sternwarte gelangt. Das Foto wurde vom weinhauser Kirchturm aufgenommen. Fotograf: Prof. Franz Kerschbaum

  4. Is God (inkonsekwent? Heerskappy, oorweging en aanspreeklikheid in die Dawidsgeskiedenis in die boeke van Samuel

    Directory of Open Access Journals (Sweden)

    Jaap L. Helberg

    2014-02-01

    Full Text Available As ’n eenheid openbaar die Samuelboeke die aanspreeklikheid van mense in hulle verhouding tot mekaar en tot God. Hierdie artikel ondersoek die vraag na God se konsekwentheid wat ook die vraag impliseer of alles onder sy heerskappy plaasvind. Die bevinding is dat alles onder God se allesoorkoepelende, vrymagtige en persoonlike heerskappy gebeur. Vir die beperkte menslike oorweging is dit geheel en al onpeilbaar anders. Dit is nie ’n nuutskepping oor sy Woord wat die lig bring nie, maar die nuutontdekking in sy Woord. Hy laat reg en geregtigheid geld, maar in ’n nog sterker mate ook sy genade. Uiteindelik is sy konsekwentheid – ‘die dwaasheid van die kruis’ – ten volle geopenbaar in die verwagte Messias, Jesus Christus. In die huidige stukkende werklikheid oefen God ook sy heerskappy uit deur persone wat hulle eie agendas het, selfs bose agendas. So laat Hy gelowiges tot selfontdekking, berou en bekering oor hulle sonde kom. Hulle leef met kinderlike vertroue op God en volgens die groot gebod van die liefde.The books of Samuel as a unity reveal the accountability of people in their relations to each other and to God. This article explores the issue of God’s consistency, including the question whether everything happens under his reign. The finding is that everything happens under his all-embracing, all-powerful and personal sovereignty, which is unfathomable by the limited human deliberation. It is not a new creation about his Word which brings the light, but the new discovery in his Word. He asserts justice, and to an even greater extent, his grace. His consistency – ‘the foolishness of the cross’ – is ultimately fully revealed in the expected Messiah, Jesus Christ. In the present broken reality God also asserts his sovereignty through people who have their own agendas, even evil agendas. Thus, He brings believers to self-discovery, remorse and repentance from their sins. They live with childlike trust in God and according

  5. Enter the imperceptible: Reading Die Antwoord

    Directory of Open Access Journals (Sweden)

    Sonja Smit

    2015-12-01

    Full Text Available Die Antwoord (The Answer, a Zef-rap outfit from South Africa, have been criticised for their appropriation of cultural signifiers in their lyrics and the images which come to fore in their music videos. This paper investigates how the band uses culture as a “found object” and albeit problematically, subverts static conceptions regarding South African life. I read Die Antwoord’s performance as an embrace of simulation (via Jean Baudrillard which destabilises myths regarding authenticity. Die Antwoord’s lack of authenticity is investigated in relation to hip hop as well as the creation of a Zef counter-culture. Drawing specifically from “Fatty Boom Boom”, the analysis centres on how the band satirises exoticised myths surrounding South African life.

  6. Expert Network for Die Casing Defect Analysis

    Institute of Scientific and Technical Information of China (English)

    Jiadi WANG; Yongfeng JIANG; Chen LU; Wenjiang DING

    2003-01-01

    Due to the competition and high cost associated with die casting defects, it is urgent to adopt a rapid and effective method for defect analysis. In this research, a novel expert network approach was proposed to avoid some disadvantages of rulebased expert system. The main objective of the system is to assist die casting engineer in identifying defect, determining the probable causes of defect and proposing remedies to eliminate the defect. 14 common die casting defects could be identified quickly by expert system on the basis of their characteristics. BP neural network in combination with expert system was applied to map the complex relationship between causes and defects, and further explained the cause determination process.Cause determination gives due consideration to practical process conditions. Finally, corrective measures were recommended to eliminate the defect and implemented in the sequence of difficulty.

  7. Opportunities and challenges of Chinese die-casting market

    Institute of Scientific and Technical Information of China (English)

    2004-01-01

    The present status and perspectives of Chinese die-casting market were commented. In 2003, the total output of die castings in the whole country was 708 000 tons, in which the outputs of Al-alloy, Zn-alloy, Mg-alloy, Cu-alloy die castings were 474 600 tons, 222 000 tons, 5 800 tons, 5 600 tons, respectively, each accounted for 67%, 31.35%, 0.85%,0.8% of the total. The annual sale volume of die-casting machines was approximately 1 800. And the gross output value of dies approached RMB 38 billion, in which die-casting dies accounted for about 10%. In the die-casting industry of the entire country, the foreign capital enterprises, public-run enterprises, township and village enterprises, private enterprises accounted for over 80% of the total die-casting enterprises. Super huge die-casting groups are forming.

  8. HELOISA ODER DIE SEHNSUCHT NACH FREUNDSCHAFT

    OpenAIRE

    Niggli, Ursula

    2008-01-01

    Unter dem Aspekt von Freundschaft wird die mehrmaligen Rollenwechsel einschließende Liaison zwischen Abaelard und Heloisa umrisshaft in ihrem Verlauf und ihrer Entwick-lung nachgezeichnet. Das Herzstück meiner Deutung thematisiert die Verführung Heloisas, ihre absolute (reine) Liebe und ihr Freundschaftsbegehren. Nicht weniger ausführlich gehe ich andererseits auf drei mögliche Gründe für Abaelards Unvermögen Heloisa gegenüber ein, und zwar in der Absicht, seine Liebe für...

  9. Die Vegetation junger Ackerbrachen in Mitteldeutschland

    OpenAIRE

    Krumbiegel, Anselm; Klotz, Stefan; Otte, Volker

    2015-01-01

    In der vorliegenden Arbeit werden die Ergebnisse von vegetationskundlich-floristischen Erhebungen auf 120 Bracheäckern in Mitteldeutschland vorgestellt. Auf den fast ausschließlich selbstbegrünten Flächen konnten fünf klassische Ackerunkrautgesellschaften in mehr oder minder typischer Ausprägung nachgewiesen werden: (Euphorbia-Melandrietum, Aphano-Matricarietum, Teesdalio-Arnoseridetum, Caucalido-Scandicetum, Rorippo-Chenopodietum). Auf mehreren Flächen ließen sich die Pflanzenbestände ledigl...

  10. The IACOB project . III. New observational clues to understand macroturbulent broadening in massive O- and B-type stars

    Science.gov (United States)

    Simón-Díaz, S.; Godart, M.; Castro, N.; Herrero, A.; Aerts, C.; Puls, J.; Telting, J.; Grassitelli, L.

    2017-01-01

    Context. The term macroturbulent broadening is commonly used to refer to a certain type of non-rotational broadening affecting the spectral line profiles of O- and B-type stars. It has been proposed to be a spectroscopic signature of the presence of stellar oscillations; however, we still lack a definitive confirmation of this hypothesis. Aims: We aim to provide new empirical clues about macroturbulent spectral line broadening in O- and B-type stars to evaluate its physical origin. Methods: We used high-resolution spectra of 430 stars with spectral types in the range O4 - B9 (all luminosity classes) compiled in the framework of the IACOB project. We characterized the line broadening of adequate diagnostic metal lines using a combined Fourier transform and goodness-of-fit technique. We performed a quantitative spectroscopic analysis of the whole sample using automatic tools coupled with a huge grid of fastwind models to determine their effective temperatures and gravities. We also incorporated quantitative information about line asymmetries into our observational description of the characteristics of the line profiles, and performed a comparison of the shape and type of line-profile variability found in a small sample of O stars and B supergiants with still undefined pulsational properties and B main-sequence stars with variable line profiles owing to a well-identified type of stellar oscillations or to the presence of spots in the stellar surface. Results: We present a homogeneous and statistically significant overview of the (single snapshot) line-broadening properties of stars in the whole O and B star domain. We find empirical evidence of the existence of various types of non-rotational broadening agents acting in the realm of massive stars. Even though all these additional sources of line-broadening could be quoted and quantified as a macroturbulent broadening from a practical point of view, their physical origin can be different. Contrarily to the early- to

  11. Qualitative Methoden in Europa. Die Vielfalt der Sozialforschung

    OpenAIRE

    2005-01-01

    Der Aufsatz bietet eine Einführung in die FQS-Schwerpunktausgabe über qualitative Methoden in Europa. Er schildert die besondere Situation der qualitativen Forschung in diesem Raum, die durch Vielfalt und Einheit geprägt ist. Vielfalt, denn die verschiedenen geistigen Traditionen und institutionellen Strukturen der Sozialwissenschaft, die den Hintergrund der qualitativen Forschung bilden, unterscheiden sich zwischen den einzelnen Ländern beträchtlich. Vielfalt verweist auf eine Reihe von selb...

  12. Science fiction (SF - wat is eintlik aan die gang?

    Directory of Open Access Journals (Sweden)

    D. W. Venter

    2000-05-01

    Full Text Available ’n Paar jaar gelede was daar ’n uitstalling in die Everard Read Galery in Johannesburg. Dit was ’n versameling kunswerke in die vorm van hologramme en apparaat wat ’n mens die geleentheid gegee het om rekenaargeskepte “skynwerklikhede” of “virtual realities” te ervaar. Die uitstaller was Don Searll en hy het die uitstalling “Haptics” genoem.

  13. Die wirtschaftliche Entwicklung im Inland: Expansion bleibt robust

    OpenAIRE

    2016-01-01

    Die deutsche Konjunktur blieb im ersten Halbjahr aufwärts gerichtet. Die Zunahme des realen Bruttoinlandsprodukts (BIP) entsprach aufs Jahr hochgerechnet in etwa dem Wachstum des gesamtwirtschaftlichen Produktionspotenzials. Allerdings wechselten im zweiten Quartal die Triebkräfte der Konjunktur von der inländischen Verwendung zum Außenbeitrag. Letzterer verbesserte sich aber aufgrund rückläufiger Einfuhren, während die Ausfuhren etwas langsamer expandierten. Getragen wird die Expansion wesen...

  14. Ausgestaltung und Aushandlung : die Analyse der Forschungssituation als Erkenntnisinstrument

    OpenAIRE

    2008-01-01

    'Der Beitrag plädiert für eine reflexive Hermeneutik, die die Subjekt- und Situationsabhängigkeit von Forschung in der Rekonstruktion als Erkenntnisgewinn nutzt. Reflexivität bedeutet in diesem Kontext, dass die Ausgestaltung der Forschungssituation selbst ein wichtiges Datum der Fallstruktur darstellt und zentrales Moment der Fallrekonstruktion ist. Zudem fließt die bereits vorgängige Überprüfung der Bedingungen und Hindernisse der eigenen Erkenntnis in die Analyse des Forschungsgegenstandes...

  15. Die gebruik van die Ou Testament in die beg ronding van die kerk se kultuurtaak - 'n hermeneutiese probleem

    Directory of Open Access Journals (Sweden)

    A. P.B Breytenbach

    1996-01-01

    Full Text Available The use of the Old Testament in motivating the church's responsibility towards the social order - a hermeneutical issue. The conviction within the ranks of the Nederduitsch Hervormde Kerk van Afrika that the church has a responsibility with regard to the social order is strongly based on a reading of the Old Testament which can be traced back to Calvin. The hermeneutics underlying this kind of reading of the Old Testament basically works with a 'deeper' meaning - a meaning which can be brought to light by means of typological exegesis. The author argues that this kind of hermeneutics cannot be maintained in the aftermath of historical-critical research. The argument is put forward that the church does not have a responsibility when it comes to the structuring of society. The theological position of the author is one which links up with qialectical theology.

  16. The evaluation of B-type Natriuretic Peptide and Troponin I in acute myocardial infarction and unstable angina

    Directory of Open Access Journals (Sweden)

    Nafija Serdarevic

    2014-09-01

    Full Text Available Introduction: The diagnostic utility of B-type natriuretic peptide (BNP has prompted interest in its use as an aid in the detection of early heart failure and assessment of diseases. The first objective of this study was measurement of BNP and troponin I (TnI blood levels in patients with acute myocardial infarction (AMI and unstable angina. The second objective of this study was to find a correlation between TnI and BNP in blood.Methods: The concentrations of BNP and TnI in 150 blood levels were determined using CMIA (chemiluminescent microparticle immunoassay Architect and 2000 (Abbott diagnostics. The retrospective study included 100 patients who were hospitalized at the Department of Internal Medicine of the University Clinical Center Sarajevo and 50 healthy control. The reference blood range of BNP is 0-100 pg/mL and TnI is 0.00-0.4 ng/mL.Results: In the patients with AMI the mean value of BNP is 764.48 ± 639.52 pg/mL and TnI is 2.50 ± 2.28ng/mL. The patients with unstable angina have BNP 287.18 ± 593.20 pg/mL and TnI 0.10 ± 0.23 ng/mL. Our studies have shown that the correlation between BNP and TnI was statistically significant for p< 0.05 using Student t test with correlation coefficient r = 0.36. Conclusions: BNP and TnI levels can help to identify the patients with a high risk for cardiovascular diseases.

  17. Evaluation of B-type Natriuretic Peptide for validation of a heart failure register in primary care

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    Hughes Elizabeth A

    2007-07-01

    Full Text Available Abstract Background Diagnosing heart failure and left ventricular systolic dysfunction is difficult on clinical grounds alone. We sought to determine the accuracy of a heart failure register in a single primary care practice, and to examine the usefulness of b-type (or brain natriuretic peptide (BNP assay for this purpose. Methods A register validation audit in a single general practice in the UK was carried out. Of 217 patients on the heart failure register, 56 of 61 patients who had not been previously investigated underwent 12-lead electrocardiography and echocardiography within the practice site. Plasma was obtained for BNP assay from 45 subjects, and its performance in identifying echocardiographic abnormalities consistent with heart failure was assessed by analysing area under receiver operator characteristic (ROC curves. Results 30/217 were found to have no evidence to suggest heart failure on notes review and were probably incorrectly coded. 70/112 who were previously investigated were confirmed to have heart failure. Of those not previously investigated, 24/56 (42.9% who attended for the study had echocardiographic left ventricular systolic dysfunction. A further 8 (14.3% had normal systolic function, but had left ventricular hypertrophy or significant valve disease. Overall, echocardiographic features consistent with heart failure were found in only 102/203 (50.2%. BNP was poor at discriminating those with and without systolic dysfunction (area under ROC curve 0.612, and those with and without any significant echocardiographic abnormality (area under ROC curve 0.723. Conclusion In this practice, half of the registered patients did not have significant cardiac dysfunction. On-site echocardiography identifies patients who can be removed from the heart failure register. The use of BNP assay to determine which patients require echocardiography is not supported by these data.

  18. Water exit pathways and proton pumping mechanism in B-type cytochrome c oxidase from molecular dynamics simulations.

    Science.gov (United States)

    Yang, Longhua; Skjevik, Åge A; Han Du, Wen-Ge; Noodleman, Louis; Walker, Ross C; Götz, Andreas W

    2016-09-01

    Cytochrome c oxidase (CcO) is a vital enzyme that catalyzes the reduction of molecular oxygen to water and pumps protons across mitochondrial and bacterial membranes. While proton uptake channels as well as water exit channels have been identified for A-type CcOs, the means by which water and protons exit B-type CcOs remain unclear. In this work, we investigate potential mechanisms for proton transport above the dinuclear center (DNC) in ba3-type CcO of Thermus thermophilus. Using long-time scale, all-atom molecular dynamics (MD) simulations for several relevant protonation states, we identify a potential mechanism for proton transport that involves propionate A of the active site heme a3 and residues Asp372, His376 and Glu126(II), with residue His376 acting as the proton-loading site. The proposed proton transport process involves a rotation of residue His376 and is in line with experimental findings. We also demonstrate how the strength of the salt bridge between residues Arg225 and Asp287 depends on the protonation state and that this salt bridge is unlikely to act as a simple electrostatic gate that prevents proton backflow. We identify two water exit pathways that connect the water pool above the DNC to the outer P-side of the membrane, which can potentially also act as proton exit transport pathways. Importantly, these water exit pathways can be blocked by narrowing the entrance channel between residues Gln151(II) and Arg449/Arg450 or by obstructing the entrance through a conformational change of residue Tyr136, respectively, both of which seem to be affected by protonation of residue His376.

  19. CDK-1 and two B-type cyclins promote PAR-6 stabilization during polarization of the early C. elegans embryo.

    Directory of Open Access Journals (Sweden)

    Alexia Rabilotta

    Full Text Available In the C. elegans embryo, formation of an antero-posterior axis of polarity relies on signaling by the conserved PAR proteins, which localize asymmetrically in two mutually exclusive groups at the embryonic cortex. Depletion of any PAR protein causes a loss of polarity and embryonic lethality. A genome-wide RNAi screen previously identified two B-type cyclins, cyb-2.1 and cyb-2.2, as suppressors of par-2(it5ts lethality. We found that the loss of cyb-2.1 or cyb-2.2 suppressed the lethality and polarity defects of par-2(it5ts mutants and that these cyclins act in cell polarity with their cyclin-dependent kinase partner, CDK-1. Interestingly, cyb-2.1; cyb-2.2 double mutants did not show defects in cell cycle progression or timing of polarity establishment, suggesting that they regulate polarity independently of their typical role in cell cycle progression. Loss of both cyclin genes or of cdk-1 resulted in a decrease in PAR-6 levels in the embryo. Furthermore, the activity of the cullin CUL-2 was required to achieve suppression of par-2 lethality when both cyclins were absent. Our results support a model in which CYB-2.1/2/CDK-1 antagonize CUL-2 activity to promote stabilization of PAR-6 levels during polarization of the early C. elegans embryo. They also suggest that CYB-2.1 and CYB-2.2 contribute to the coupling of cell cycle progression and asymmetric segregation of cell fate determinants.

  20. Proton transfer in the K-channel analog of B-type Cytochrome c oxidase from Thermus thermophilus.

    Science.gov (United States)

    Woelke, Anna Lena; Wagner, Anke; Galstyan, Gegham; Meyer, Tim; Knapp, Ernst-Walter

    2014-11-04

    A key enzyme in aerobic metabolism is cytochrome c oxidase (CcO), which catalyzes the reduction of molecular oxygen to water in the mitochondrial and bacterial membranes. Substrate electrons and protons are taken up from different sides of the membrane and protons are pumped across the membrane, thereby generating an electrochemical gradient. The well-studied A-type CcO uses two different entry channels for protons: the D-channel for all pumped and two consumed protons, and the K-channel for the other two consumed protons. In contrast, the B-type CcO uses only a single proton input channel for all consumed and pumped protons. It has the same location as the A-type K-channel (and thus is named the K-channel analog) without sharing any significant sequence homology. In this study, we performed molecular-dynamics simulations and electrostatic calculations to characterize the K-channel analog in terms of its energetic requirements and functionalities. The function of Glu-15B as a proton sink at the channel entrance is demonstrated by its rotational movement out of the channel when it is deprotonated and by its high pKA value when it points inside the channel. Tyr-244 in the middle of the channel is identified as the valve that ensures unidirectional proton transfer, as it moves inside the hydrogen-bond gap of the K-channel analog only while being deprotonated. The electrostatic energy landscape was calculated for all proton-transfer steps in the K-channel analog, which functions via proton-hole transfer. Overall, the K-channel analog has a very stable geometry without large energy barriers.

  1. Oxygen abundance determination of B-type stars with the O I 7771-5 Å lines*

    Science.gov (United States)

    Takeda, Yoichi; Honda, Satoshi

    2016-06-01

    Oxygen abundances of 34 B-type stars in the effective temperature range of Teff ˜ 10000-28000 K with diversified rotational velocities (vesin i ˜ 0-250 km s-1) were determined from the O I triplet lines at 7771-5 Å, with an aim of examining whether this O I feature can be a reliable abundance indicator for such high-temperature stars including rapid rotators. It revealed that the required non-local thermodynamic equilibrium (LTE) abundance correction is distinctly large (ranging from ˜-0.6 dex to ˜-1.7 dex) and its consideration is indispensable. On the condition that the non-LTE effect is taken into account, this triplet is a useful O abundance indicator (with a precision of ≲ 0.2 dex) up to Teff ≲ 25000 K, since its total equivalent width is sufficiently large ( ≳ 200 mÅ). In contrast, it is not adequate for abundance derivation for stars at Teff ≳ 25000 K, where its strength rapidly drops down toward a hardly detectable level (except for sharp-lined stars) and its sensitivity to Teff or log g becomes considerably large. The resulting non-LTE oxygen abundances turned out to be almost normal (i.e., near-solar around ˜8.7-8.8 within ˜±0.2 dex) for most stars without any dependence upon projected rotational velocity as well as luminosity (or mass), which is consistent with the prediction of recent stellar evolution calculations.

  2. Predictors of Left Ventricle Remodeling: Combined Plasma B-type Natriuretic Peptide Decreasing Ratio and Peak Creatine Kinase-MB.

    Science.gov (United States)

    Hsu, Jen-Te; Chung, Chang-Min; Chu, Chi-Ming; Lin, Yu-Shen; Pan, Kuo-Li; Chang, Jung-Jung; Wang, Po-Chang; Chang, Shih-Tai; Yang, Teng-Yao; Jang, Shih-Jung; Yang, Tsung-Han; Hsiao, Ju-Feng

    2017-01-01

    Background: Previous studies reported that patients who had an acute myocardial infarction (AMI) have found that measuring B-type natriuretic peptide (BNP) during the subacute phase of left ventricular (LV) remodeling can predict the possible course of LV remodeling. This study assessed the use of serial BNP serum levels combined with early creatine kinase-MB (CK-MB) to predict the development of significant LV remodeling in AMI patients. Methods: Nighty-seven patients with new onset AMI were assessed using serial echocardiographic studies and serial measurements of BNP levels, both performed on day-2 (BNP1), day-7 (BNP2), day-90 (BNP3), and day-180 (BNP4) after admission. LV remodeling was defined as >20% increase in biplane LV end-diastolic volume on day-180 compared to baseline (day-2). Results: Patients were divided into LV remodeling [LVR(+)] and non LV remodeling [LVR(-)] groups. No first-week BNP level was found to predict remodeling. However, the two groups had significantly different day-90 BNP level (208.1 ± 263.7 pg/ml vs. 82.4 ± 153.7 pg/ml, P = 0.039) and significantly different 3-month BNP decrease ratios ( R BNP13) (14.4 ± 92.2% vs. 69.4 ± 25.9%, P remodeling. Additionally, combining peak CK-MB and R BNP13 offered an excellent discrimination for half-year remodeling when assessed by ROC curve (AUC = 0.818, P remodeling. The early peak CK-MB additionally offered an incremental power to the predictions derived from serial BNP examinations.

  3. NLTE carbon abundance determination in selected A- and B-type stars and the interpretation of C I emission lines

    Science.gov (United States)

    Alexeeva, S. A.; Ryabchikova, T. A.; Mashonkina, L. I.

    2016-10-01

    We constructed a comprehensive model atom for C I-C II using the most up-to-date atomic data available and evaluated the non-local thermodynamic equilibrium (NLTE) line formation for C I and C II in classical 1D models representing the atmospheres of A- and late B-type stars. Our NLTE calculations predict the emission that appears at effective temperature of 9250 to 10 500 K depending on log g in the C I 8335, 9405 Å singlet lines and at Teff> 15 000 K (log g = 4) in the C I 9061-9111 Å, 9603-9658 Å triplet lines. A pre-requisite of the emission phenomenon is the overionization-recombination mechanism resulting in a depopulation of the lower levels of C I to a greater extent than the upper levels. Extra depopulation of the lower levels of the transitions corresponding to the near-infrared lines, is caused by photon loss in the UV lines C I 2479, 1930, and 1657 Å. We analysed the lines of C I and C II in Vega, HD 73666, Sirius, 21 Peg, π Cet, HD 22136, and ι Her taking advantage of their observed high-resolution spectra. The C I emission lines were detected in the four hottest stars, and they were well reproduced in our NLTE calculations. For each star, the mean NLTE abundances from lines of the two ionization stages, C I and C II, including the C I emission lines, were found to be consistent. We show that the predicted C I emission phenomenon depends strongly on whether accurate or approximate electron-impact excitation rates are applied.

  4. A framework for development of an intelligent system for design and manufacturing of stamping dies

    Science.gov (United States)

    Hussein, H. M. A.; Kumar, S.

    2014-07-01

    An integration of computer aided design (CAD), computer aided process planning (CAPP) and computer aided manufacturing (CAM) is required for development of an intelligent system to design and manufacture stamping dies in sheet metal industries. In this paper, a framework for development of an intelligent system for design and manufacturing of stamping dies is proposed. In the proposed framework, the intelligent system is structured in form of various expert system modules for different activities of design and manufacturing of dies. All system modules are integrated with each other. The proposed system takes its input in form of a CAD file of sheet metal part, and then system modules automate all tasks related to design and manufacturing of stamping dies. Modules are coded using Visual Basic (VB) and developed on the platform of AutoCAD software.

  5. Archaeometric study on minting dies produced under papal rule in Ferrara

    Science.gov (United States)

    Monticelli, Cecilia; Balbo, Andrea; Vaccaro, Carmela; Gulinelli, Maria Teresa; Garagnani, Gian Luca

    2013-12-01

    In the Civic Museum of Palazzo Schifanoia in Ferrara, a collection of 1104 coin striking tools is stored. Among these, eight steel dies produced from the 2nd decade of the seventeenth to the half of the eighteenth century, representative of the whole period of activity of the papal mint in Ferrara, have been chosen and studied. In that period, while important innovations in the coin minting technique were introduced in Europe, Ferrara declined from the rank of ducal mint to that of peripheral minting center of the highly centralized Papal States. The dies have been characterized by metallographic, chemical, and microhardness investigations. The results suggest that the dies were obtained by a manual smithing technique consisting in hammer hot forging. The die quality improved with time. In fact, in the period 1619-1622, a hardening treatment for the engraved die end consisting in a simple local carburization coexisted with a more efficient production method, based on the application of a proper final heat treatment. This treatment induced a graded microstructure from the engraved end, with a hard martensitic or bainitic structure, to the opposite end, with a tough ferritic/pearlitic structure. From 1675 onward, the latter production method was applied on all the studied dies. The chemical analysis of the alloys suggest that they were likely obtained from iron ores with a common provenance, while the analysis of the slag inclusions suggests the adoption of a direct method of ironmaking throughout the activity period of the mint.

  6. Post-traumatic syringomyelia; Die posttraumatische Syringomyelie

    Energy Technology Data Exchange (ETDEWEB)

    Freund, M.; Sartor, K. [Universitaetsklinikum Heidelberg (Germany). Abt. Neuroradiologie; Aschoff, A. [Universitaetsklinikum Heidelberg (Germany). Neurochirurgische Klinik; Spahn, B. [Universitaetsklinikum Heidelberg (Germany). Abt. Orthopaedie 2

    1999-12-01

    The improvement of preclinical emergency medicine, better surgical and conservative therapies, and the development of intensive care units and specialized centers have improved the survival rate for patients with serious spinal cord injuries. Therefore, more sequelae of chronic spinal cord injuries such as post-traumatic spinal cord cavitations also occur. The first such case was described by Bastian in 1867. Generally, these cavitations were diagnosed from 2 months up to 32 years after the trauma. The overall prevalence of post-traumatic syringomyelia (PTS) is not known; however, with the increasing use of magnetic resonance imaging (MRI), its diagnosis has increased, ranging from 2.3% of paraplegic and tetraplegic patients in 1976 and 3.2% in 1985, to nearly 50% in a selected group of patients in 1991 and 1993. In 1995, a 4.45% incidence was reported. In our clinic we are currently treating 440 cases of syringomyelia, 140 of which are PTS. Several observations suggest more than one potential mechanism for the evolution of a post-traumatic cyst or PTS. Various factors, such as hemorrhage or, in particular, ischemia within the spinal cord, blockage of the cerebrosinal fluid (CSF) pathways around the cord or localized meningeal fibrosis either alone or in combination with other factors, may be involved. Clinically, sensory disturbances, loss of motor function, pain, and modification of the deep tendon reflexes are observed in most patients. On MRI, PTS is seen as a longitudinal, cystic cavity within the spinal cord, giving a hypointense signal on T{sub 1}-weighted images and a hyperintense signal on T{sub 2}-weighted images. For treatment planning it is mandatory to identify the lower and upper end of the PTS on the MRI. (orig.) [German] Aufgrund der verbesserten medizinischen Versorgung schwer Rueckenmarkverletzter hat die Zahl der (Langzeit-) Ueberlebenden erheblich zugenommen. Allerdings koennen Spaetkomplikationen auftreten, die zu einer deutlichen Zunahme der

  7. Die Lipase aus Rhizopus oryzae: Klonierung, Expression, Reinigung und Mutagenese eines industriell relevanten Enzyms für die Biokatalyse und die Strukturbestimmung

    OpenAIRE

    Minning, Stefan

    1999-01-01

    Die Lipase aus Rhizopus oryzae (ROL) konnte in der Vergangenheit in E. coli erfolgreich in Form inaktiver Einschlußverbindungen exprimiert werden. Um daraus die aktive Lipase zu erhalten, musste diese durch eine teure und aufwendige Rückfaltungsprozedur renaturiert werden. Da die Hefe Pichia pastoris dafür bekannt ist, heterologe Proteine mit großen Ausbeuten zu exprimieren wurde sie zur Produktion der reifen ROL, sowie diverser Mutanten verwendet. Die Expression unter Kontrolle des methanol-...

  8. Die verhouding tussen land en ekumene in die Ou Testament en die betekenis daarvan vir vandag

    Directory of Open Access Journals (Sweden)

    J. L. Helberg

    1992-06-01

    Full Text Available The aim of this article is to determine to what extent God’s action with his people is determined spatially and to what extent focus on the land and ecumenicity are contrary, substitutionary, complementary or dialectic concepts. The following questions will be addressed. To what extent does land play a role in ecumenical relations? To what extent are these relations determined structurally or organisationally? To what extent is diversity or plurality accommodated? Old Testament material will receive special attention but the line of thought in the New Testament will also be touched upon briefly. Applied to current issues the article will inter alia pay attention to the question whether the aim of ecumenical reflection should be one ‘national church' with sister churches in other countries or one ‘world wide church'.

  9. Die verskynsel van die eenheid-verskeidenheid van die kerk: In gesprek met Calvyn

    Directory of Open Access Journals (Sweden)

    A. Botma

    1997-01-01

    Full Text Available The phenomenon of the unity-diversity of the church: A conversation with Calvin This article engages' in a critical dialogue with Calvin's conception of the unity-diversity of the church. Calvin, by understanding faith as the believer's personal relationship with God, stresses the dynamic character of the church. Concerning unity and diversity, Calvin held the view that there is only one Christ. Calvin distinguished between fundamental and secondary truths. In Calvin's view the redemption in Christ is reported monotonously in the New Testament. Contrary to Calvin the article shows that there are diverse interpretations of the Jesus-'Sache' in' the New Testament itself. However, in appreciation of Calvin, it is argued that he - because of the dynamic structure of the church - did not insist on one visible form of organisation for the church.

  10. Die ontwerp van 'n werkmonstertoets vir die keuring van swart elektrisienambagmanhelpers

    Directory of Open Access Journals (Sweden)

    J. B. Worfaardt

    1985-11-01

    Full Text Available A work sample test, the Cable Joints Test, which could serve as a selection instrument for Black electrician aides in the mining industry was designed and applied with a rating scale as criterion. The predictors were scores on two testings with the work sample, an improvement score, Dudec and related job experience. A validation study (N=53 yielded low reliability coefficients and no significant correlation between predictors and criterion, but a cross validation (N=62 had shown that a combination of the second test score and Dudec combined could predict work performance. However, the multiple correlations (0,40 to 0,52 were low and the variance explained inadequate to be of any practical value in a selection battery.Opsomming'n Werkmonstertoets, die Kabellastoets, wat kan dien as keuringinstrument vir Swart elektrisiënambagmanhelpers in die mynbouindustrie is ontwerp en toegepas met 'n beoordeling- skaal as kriterium. Die voorspellers was tellings op twee toetsings met die werkmonster, 'n verbeteringtelling, Dudec en verwante werkervaring. 'n Valideringstudie (N=53 het lae betroubaarheidskoëffisiënte en geen betekenisvolle korrelasies tussen voorspellers en kriterium opgelewer nie, maar 'n kruisvalidering (N=62 het aangetoon dat 'n kombinasie van die tweede toetstelling en Dudec werkverrigting kan voorspel. Die meervoudige korrelasies (0,40 tot 0,52 was egter laag en die variansie wat verklaar word onvoldoende om van enige praktiese waarde in 'n keuringbattery te wees.

  11. Die Umstrukturierung des Ingenieurberufs und die Mobilisierung der Frauen als Ressource im Systemwettstreit

    Directory of Open Access Journals (Sweden)

    Petra Behrens

    2005-11-01

    Full Text Available Karin Zachmann geht in ihrer Habilitationsschrift, die Ansätze der Technik- und der Geschlechtergeschichte sowie der neueren DDR-Forschung aufgreift, den Auseinandersetzungen zwischen technischer und politischer Elite um einen grundlegenden Umbau des Ingenieurberufs in der SBZ/DDR nach. Sie untersucht für den Zeitraum von 1945 bis zum 1971 erfolgten Machtwechsel von Ulbricht zu Honecker, wie die politische Elite ihren Anspruch auf eine umfassende Verfügbarkeit technischen Wissens geltend machte und welche Auswirkungen dieses auf das berufliche Selbstverständnis der technischen Experten hatte. Dabei stehen die Feminisierungsprozesse und die Verschiebungen in der geschlechtlichen Codierung des Ingenieurberufs, die mit einer verstärkten Mobilisierung von Frauen für technische Berufe einhergingen, im Zentrum. Die auf einer breiten Quellengrundlage basierende Studie gibt nicht nur Aufschluss über die Frage nach den Handlungsspielräumen der technischen Experten in der DDR, sondern stellt zudem einen wichtigen Beitrag zur „Dekonstruktion der staatssozialistischen Geschlechterordnung“ dar.

  12. Die bantering van daar-interferensie in die Duits van Afrikaansmoedertaliges

    Directory of Open Access Journals (Sweden)

    Emerencia C. Steyn

    2013-02-01

    Full Text Available A comparison of sentence constructions in the soundtracks (simulcast of some television programmes indicates a general lack of a German equivalent for the multiple use of the A.frikaans daar. This naturally results in interference in the usage of German by A.frikaans speaking students, as they are inclined to construct their German sentences in accordance with the A.frikaans equivalents. This problem is mainly illustrated in either the erroneous use of a da or an inappropriate es gibt. Various exercises are submitted, aimed at obviating such errors of interference which are mainly noticeable in the spoken ·language. Soos blyk uit 'n vergelyking van segslryses in die parallelle klankbane van enkele televisieprogramme, het die veelvuldige gebruik van die Afrikaanse woord daar gewoonlik geen ekwivalensie in Duits nie. Dit lei maklik tot interferensie in die Duits van Afrikaansmoedertalige studente, omdat hulle daartoe neig om hul Duitse sinne soos die in A.frikaans te konstrueer. Hierdie probleem word hoofsaaklik in die foutiewe gebruik van da geopenbaar; soms egter ook in 'n misplaaste es gibt. Verskeie oefeninge word aan die hand gedoen om sulke interferensiefoute, wat vera! in m(mdelinge werk opduik, te bekamp.

  13. Die casting die deflections: Prediction and attenuation. Final report, July 1, 1995--September 30, 1997

    Energy Technology Data Exchange (ETDEWEB)

    Miller, R.A.; Ahuett-Garza, H.; Choudhury, A.K.; Dedhia, S.

    1998-05-01

    This report summarizes two years of research intended to develop methods to model and predict the deflection patterns in die casting dies. No comprehensive analysis of this type had previously been completed. The die casting process is complex and involves numerous mechanical and thermal phenomena that effect the mechanical behavior of the die. A critical activity in this work was sorting out and evaluating the relative contributions of the various mechanisms to die deflections. This evaluation was accomplished through a series of simple engineering analyses based primarily on the order of magnitude of the influence of each load considered on die deflections. A modeling approach incorporating commercially available finite element analysis software was developed and tested. The model evolved by testing simple models against more comprehensive models and against the limited experimental data that is available. The development of the modeling approach lead to consideration of the die casting machine in more detail than was originally anticipated. The machine is critical and cannot be ignored. A simplified model described as a spring/platen model was developed to account for the machine platens, tie bars, and toggles. The characteristics of this model are described and predictions based on this model are compared against full machine models and measured deflections of machine platens. Details of the modeling approach and the various case studies are provided in the report and in several publications that have resulted from the work.

  14. Deformation properties of pharmaceutical excipients determined using an in-die and out-die method.

    Science.gov (United States)

    Ilić, Ilija; Govedarica, Biljana; Šibanc, Rok; Dreu, Rok; Srčič, Stane

    2013-03-25

    This study investigated deformation mechanisms of some commonly used pharmaceutical fillers, such as microcrystalline cellulose, lactose, dicalcium phosphate, isomalt and cornstarch, using a combination of the in-die and out-die method with the Heckel and Walker models. The tableting mixtures contained of 98.5% (w/w) filler, the rest consisted of dry binder and an antiadhesive agent. Our results showed that plasticity and elasticity may be considered independent deformation properties as highly plastic materials (microcrystalline cellulose, cornstarch) also exhibited high elasticity. Particular emphasis was placed on explaining the differences observed between the in-die and out-die method-comparison revealed that the differences are a consequence of the material's elastic properties. Larger error of in-die results can be expected for more elastic materials, and thus in-die Heckel should be used with some considerations. In contrast, the Walker model was found to be more robust and smaller differences were observed between the two methods. We consider the most correct results to have been obtained by the out-die approach, which excludes the elastic properties of the material evaluated. An excellent correlation between elastic determination at the single-particle level and multiple-particle scale was demonstrated, suggesting a great potential of nanoscale determination of a material's mechanical properties for better elucidation of deformation mechanisms.

  15. Die faktorstruktuur van die 19 veld-belangstellings-vraelys en Holland se struktuur van belangstellings

    Directory of Open Access Journals (Sweden)

    G. P. de Bruin

    1995-06-01

    Full Text Available The 19 Field Interest Inventory (19FII has been used for the assessment of the interests of white South Africans for more than twenty years. This inventory gives a detailed but uneconomical description of a person's interests in terms of 19 fields. A further shortcoming is that the inventory is not based on any specific theory. Holland offers a theoretically sound and more economical description of interests in terms of six fields. A factor analysis of the 19 fields of the 19FII was undertaken to determine to what extent the factors would correspond with Holland's fields. Three Holland fields received strong support, whilst the remaining three received tentative support. The discrepancies may be ascribed to the restricted nature of the sample, namely prospective white male university students. Opsomming Die 19 Veld-belangstellingsvraelys (19VBV word al vir langer as twintig jaar gebruik vir die taksering van blanke Suid-Afrikaners se beroepsbelangstellings. Hierdie vraelys bied 'n gedetailleerde, maar onekonomiese beskrywing van 'n persoon se belangstellings in terme van 19 velde. Hierdie vraelys is ook nie op enige onderliggende teoretiese rasionaal gebaseer nie. Hierteenoor bied Holland 'n teoreties verantwoorde en meer ekonomiese beskrywing van belangstellings in terme van ses velde. 'n Faktorontleding is op 'n datastel wat aan die hand van die 19VBV verkry is uitgevoer om te sien tot watter mate die faktore sal ooreenstem met Holland se velde. Sterk bevestiging vir drie van Holland se velde is gevind/ terwyl die ander drie velde tentatiewe ondersteuning verkry het. Die afwykings kan moontlik aan die geselekteerde aard van die steekproef, naamlik voornemende blanke manlike universiteitstudente, toegeskryf word.

  16. Expectation and Variation with a Virtual Die

    Science.gov (United States)

    Watson, Jane; English, Lyn

    2015-01-01

    By the time students reach the middle years they have experienced many chance activities based on dice. Common among these are rolling one die to explore the relationship of frequency and theoretical probability, and rolling two dice and summing the outcomes to consider their probabilities. Although dice may be considered overused by some, the…

  17. Reproduce and die! Why aging? Part II

    NARCIS (Netherlands)

    Schuiling, GA

    2005-01-01

    Whilst in part I of this diptych on aging the question why aging exists at all is discussed; this part deals with the question which mechanisms underly aging and, ultimately, dying. It appears that aging is not just an active process as such - although all kinds of internal (e.g., oxigen-free radica

  18. What Do Prostate Cancer Patients Die Of?

    OpenAIRE

    Riihimäki, Matias; Thomsen, Hauke; Brandt, Andreas; Sundquist, Jan; Hemminki, Kari

    2011-01-01

    The cause of death in prostate cancer patients is examined using the Swedish Family-Cancer Database. Prostate cancer patients were found to have a higher risk for dying from various causes other than prostate cancer, including external causes and heart failure.

  19. Mold Die Making. 439-322/324.

    Science.gov (United States)

    Yunke, P.; And Others

    Each unit in this curriculum guide on mold die making contains an introduction, objectives, materials required, lessons, space for notes, figures, and diagrams. There are 10 units in this guide: (1) introduction to Electrical Discharge Machining (EDM); (2) EDM principles; (3) the single pulse; (4) EDM safety; (5) electrode material; (6) electrode…

  20. Casting Characteristics of Aluminum Die Casting Alloys

    Energy Technology Data Exchange (ETDEWEB)

    Makhlouf M. Makhlouf; Diran Apelian

    2002-02-05

    The research program investigates the casting characteristics of selected aluminum die casting alloys. Specifically, the alloys' tendencies towards die soldering and sludge formation, and the alloys' fluidity and machinability are evaluated. It was found that: When the Fe and Mn contents of the alloy are low; caution has to be taken against possible die soldering. When the alloy has a high sludge factor, particularly a high level of Fe, measures must be taken to prevent the formation of large hardspots. For this kind of alloy, the Fe content should be kept at its lowest allowable level and the Mn content should be at its highest possible level. If there are problems in die filling, measures other than changing the alloy chemistry need to be considered first. In terms of alloy chemistry, the elements that form high temperature compounds must be kept at their lowest allowable levels. The alloys should not have machining problems when appropriate machining techniques and machining parameters are used.