bluuebunny/crossref_metadata_2025_split huggingface dataset:
Faunal dynamics of bivalves and scaphopods in the Bathonian (Middle Jurassic) ore-bearing clays at Gnaszyn, Kraków-Silesia Homocline, Poland
Authors: Kaim Andrzej , Sztajner Przemysław 
Published: February 2013

ABSTRACT
Kaim, A. and Sztajner, P. 2012. Faunal dynamics of bivalves and scaphopods in the Bathonian (Middle Jurassic) ore-bearing clays at Gnaszyn, Kraków-Silesia Homocline, Poland. Acta Geologica Polonica, 62(3), 381- 395. Warszawa.
The environment at the Gnaszyn section - as deduced from bivalve and scaphopod dynamics - was controlled by the substrate consistency and possibly oxygen deficiency near the sediment-water interface and/or oxygen content fluctuations. The middle part of the section dominated by nuculoid and corbulid bivalves and Laevidentalium -type scaphopods probably reflects a soupy substrate and possibly oxygen deficiency in the sediment. Slightly coarser and better-oxygenated silts in the upper and lower parts of the section offered a less soupy substrate consistency, allowing the development of communities dominated by astartids, byssate bivalves, and Dentalium - and Plagioglypta-type scaphopods.
Palaeoenvironmental reconstruction of Bathonian (Middle Jurassic) ore-bearing clays at Gnaszyn, Kraków-Silesia Homocline, Poland
Authors: Gedl Przemysław , Kaim Andrzej , Leonowicz Paulina , Boczarowski Andrzej , Dudek Teresa , Kędzierski Mariusz , Rees Jan , Smoleń Jolanta , Szczepanik Patrycja , Sztajner Przemysław , Witkowska Magda , Ziaja Jadwiga 
Published: February 2013

ABSTRACT
Gedl, P., Kaim, A., Leonowicz, P., Boczarowski, A., Dudek, T., Kędzierski, M., Rees, J., Smoleń, J., Szczepanik, P., Sztajner, P., Witkowska, M. and Ziaja, J. 2012. Palaeoenvironmental reconstruction of Bathonian (Middle Jurassic) ore-bearing clays at Gnaszyn, Krakow-Silesia Homocline, Poland. Acta Geologica Polonica, 62(3), 463-484. Warszawa.
Multidisciplinary studies of the Middle-Upper Bathonian ore-bearing clays at Gnaszyn revealed variable palaeoenvironmental conditions during the deposition of this seemingly monotonous sequence. We interpret the conditions in the bottom environment and the photic zone, and also evaluate the influence of the adjacent land areas, based on sedimentology, geochemistry, sporomorphs and palynofacies composition, benthic (foraminifera, gastropods, bivalves, scaphopods, echinoderms), planktonic (calcareous nannoplankton, dinoflagellate cysts), and nektonic (sharks) fossils. The Gnaszyn succession originated relatively close to the shore, within reach of an intense supply of terrestrial fine clastic and organic particles. The latter are mainly of terrestrial origin and range from 1.5 to 2.5 wt.%. The precise water depth is difficult to estimate but most likely ranges from several tens of metres to a few hundred metres. All fossil groups show minor changes throughout the succession. As the climate seems to have been quite stable during this period we consider sea-level fluctuations to have been the main factor responsible for the changes. The terrestrial input, including freshwater and land-derived clastic and organic particles (sporomorphs and cuticles), increased during periods of sea-level lowstand. As a consequence, stress conditions (lower salinity, higher nutrient availability, lower water transparency) in the photic zone caused blooms of opportunistic planktonic taxa. Furthermore, a faster sedimentation rate led to oxygen depletion and deterioration of the living conditions in the bottom environment due to an increased accumulation of organic matter. As a result, the benthic biota became taxonomically impoverished and commonly dominated by juvenile forms. During periods of high sea level, the source areas were shifted away from the basin, resulting in a decrease in the terrestrial influx, increase in the salinity of surface waters, the appearance of more diverse phytoplankton assemblages, a lower sedimentation rate, and an improvement of living conditions at the bottom.
Integrated stratigraphy of the Campanian–Maastrichtian boundary succession of the Middle Vistula River (central Poland) section; introduction
Authors: Walaszczyk Ireneusz 
Published: February 2013

ABSTRACT
Walaszczyk, I. 2012. Integrated stratigraphy of the Campanian-Maastrichtian boundary succession of the Middle Vistula River (central Poland) section; introduction. Acta Geologica Polonica, 62 (4), 463-471. Warszawa.
The Campanian-Maastrichtian boundary interval of the Middle Vistula River valley section (central Poland) represents a continuous, lithologically monotonous, fossiliferous succession, with a good stable isotope and palaeomagnetic signal. It yields all the biostratigraphically critical macro- and microfossil groups: ammonites, belemnites, inoceramid bivalves, foraminifera, nannofossils and dinoflagellates. Additionally, it is located in the transitional zone between the Boreal and Tethyan biogeographic provinces, as well as between the western and eastern biogeographic areas of Europe. The section supplements the data on the interval acquired recently from the basal Maastrichtian stratotypic section in Tercis, south-west France, and from the interval reference section in Kronsmoor, northern Germany
The Belemnella stratigraphy of the Campanian– Maastrichtian boundary; a new methodological and taxonomic approach
Authors: Remin Zbigniew 
Published: February 2013

ABSTRACT
Remin, Z. 2012. The Belemnella stratigraphy of the Campanian-Maastrichtian boundary; a new methodological and taxonomic approach. Acta Geologica Polonica, 62 (4), 495-533. Warszawa.
The taxonomy and stratigraphy of the Upper Campanian and Lower Maastrichtian belemnites from the Vistula (central Poland) and Kronsmoor (northern Germany) sections are revised on the basis of new collections from the Vistula section as well as a reinvestigation of the classic collection of Schulz from the Kronsmoor section. For the taxonomic description a new biometric procedure is proposed, which can be applied to both the genera Belemnella and Belemnitella. For the species-level taxa recognition the Artificial Neural Networks method, the self-organizing Kohonen algorithm, was implemented. This new taxonomic and methodological approach enabled the recognition of nine species of the genus Belemnella. Five of them can be assigned to the existing species B. lanceolata, B. longissima , B. inflata, B. obtusa and B. vistulensis. However, the species concept differs from that applied by Schulz (1979). As a consequence, the stratigraphic ranges of these species are modified. Four species are left in open nomenclature and represent possibly new species. Future studies may reveal that they might be assigned to East European forms from Ukraine or Russia.
The species of Belemnella recognized are placed into the stratigraphic framework based on the standard ammonite and inoceramid bivalve zonations, especially those recognized in the Vistula section. The newly proposed belemnite zonation for the Vistula and Kronsmoor sections is correlated via inoceramids with the standard GSSP at Tercis, France, in order to identify the base of the Maastrichtian Stage. The Campanian-Maastrichtian boundary as defined in Tercis is placed here at the base of the newly defined B. obtusa and B. vistulensis Zones [“obtusa/vistulensis”] - thus it is markedly higher than the traditional boundary based on the FAD of representatives of the genus Belemnella . This new boundary coincides well with a distinct turnover of belemnite guard morphology and represents one of the most important points in the early evolutionary history of Belemnella.
Three belemnite zones defined by their lower boundaries are recognized in the Campanian-Maastrichtian interval, in addition to three subzones recognized within the B. obtusa Superzone. The B. lanceolata and B. inflata zones as understood here are referred to the Upper Campanian [Tercis definition]. The B. obtusa Zone is subdivided into three subzones, viz.: Belemenlla vistulensis, Belemnella sp. G and Belemnella sp. F, which are referred to the Lower Maastrichtian [Tercis definition].
The fast evolving species of Belemnella enable the proposal of a biostratigraphic scheme with a resolution that is higher than those based on inoceramid bivalves and ammonites - the longevity of a belemnite zone could be as low as 200Ky.
Early representatives of the belemnite genus Belemnella (Cephalopoda) from the uppermost Campanian–Lower Maastrichtian of the Middle Vistula River section, central Poland
Authors: Keutgen Norbert , Remin Zbigniew , Walaszczyk Ireneusz 
Published: February 2013

ABSTRACT
Keutgen, N., Remin, Z. and Walaszczyk, I. 2012. Early representatives of the belemnite genus Belemnella (Cephalopoda) from the uppermost Campanian-Lower Maastrichtian of the Middle Vistula River section, central Poland. Acta Geologica Polonica, 62 (4), 535-559. Warszawa.
Representatives of the belemnite genus Belemnella from the uppermost Campanian and lowermost Maastrichtian of the Middle Vistula River Valley section (central Poland) have been studied, using the species concept proposed by Schulz in 1979. Results have been compared to a recently proposed new interpretation of the genus Belemnella based on artificial neural networks, as put forward by Remin in 2007 and 2012. In the interval studied, four taxa have been recognised: Bln. longissima, Bln. inflata, Bln. obtusa and Bln. vistulensis, the last-named being a senior synonym of Bln. pseudobtusa. Three additional forms have been left in open nomenclature: Bln. cf. lanceolata , Bln. ex gr. lanceolata/inflata and Belemnella sp. Based on their documented vertical ranges, three Belemnella standard zones, as originally distinguished in the Kronsmoor section by Schulz (1979), northern Germany, have been defined, in ascending order: the Bln. lanceolata, Bln. vistulensis and Bln. obtusa zones. The bases of the lanceolata and obtusa zones in the Middle Vistula River Valley section can be directly correlated with the same zones at Kronsmoor, and appear to be isochronous within limits of stratigraphic resolution. The base of the vistulensis Zone (Bln. vistulensis according to the species concept of Schulz in 1979), however, is probably diachronous, being older in the Middle Vistula section. Although Schulz’s and Remin’s species concepts differ quite considerably, they do result in similar stratigraphic subdivisions of the Kronsmoor and Middle Vistula River sections.
Hexactinellid sponge assemblages across the Campanian– Maastrichtian boundary in the Middle Vistula River section, central Poland
Authors: Świerczewska-Gładysz Ewa 
Published: February 2013

ABSTRACTŚwierczewska-Gładysz, E. 2012. Hexactinellid sponge assemblages across the Campanian-Maastrichtian boundary in the Middle Vistula River section, central Poland. Acta Geologica Polonica, 62 (4), 561-580. Warszawa.The sponge fauna from the Upper Campanian-lowermost Maastrichtian succession of the Middle Vistula River valley (central Poland) is represented mainly by dictyid hexactinellid sponges (Hexactinosida and Lychniscosida). Their greatest abundance and taxonomic variability is noted in the “Inoceramus” inkermanensis Zone (Upper Campanian), and they are less diverse in the overlying (Upper Campanian) Trochoceramus costaecus Zone and lower “Inoceramus” redbirdensis Zone. In the upper “Inoceramus” redbirdensis Zone (basal Maastrichtian in the sense of the Tercis rather than the Boreal definition) they are extremely rare. With the beginning of the Maastrichtian the number of dictyid sponges gradually increases.The observed changes in the abundance and taxonomic variability of the dictyid sponges indicate environmental changes in the latest Campanian-earliest Maastrichtian sea in the area. It seems that changes in basin bathymetry, confined to eustatic sea-level changes in the latest Campanian and early Maastrichtian, were the most important factor. Progressive shallowing of the basin in the latest Campanian drastically restricted the development of dictyids. In the peak regression, the sea level could have fallen to only several tens of metres. The gradual recovery of the sponge assemblages correlates with subsequent deepening of the basin with the start of the Maastrichtian
Using Cored Wires Injection 2PE-9 Method in the Production of Ferritic Si-Mo Ductile Iron Castings
Authors: Guzik E. , Wierzchowski D. 
Published: February 2013

Abstract
The results of studies on the use of modern two cored wires injection method for production of ferritic nodular cast iron (ductile iron) with use of unique implementation of drum ladle as a treatment / transport and casting ladle instead vertical treatment ladle was described. The injection of length of Ø 9mm wires, cored: in FeSi + Mg nodulariser mixture and inoculant master alloy is a treatment method which can be used to produce iron melted in coreless induction furnace. This paper describes the results and analysis of using this method for optimal production of ductile iron under specific industrial conditions. It means, that length of nodulariser wire plus treatment and pouring temperatures were optimized. In this case, was taken ductile iron with material designation: EN-GJS-SiMo40-6 Grade according EN 16124:2010 E. Microstructure of great number of trials was controlled on internally used sample which has been correlated with standard sample before. The paper presents typical ferritic metallic matrix and nodular graphite. Additionally, mechanical properties were checked in some experiments. Mean values of magnesium recovery and cost of this new method from optimized process parameters were calculated as well.
Mechanical Properties of Al-Si-Mg Alloy Castings as a Function of Structure Refinement and Porosity Fraction
Authors: Hajkowski M. , Bernat Ł. , Hajkowski J. 
Published: February 2013

Abstract
During design of the casting products technology, an important issue is a possibility of prediction of mechanical properties resulting from the course of the casting solidification process. Frequently there is a need for relations describing mechanical properties of silumin alloys as a function of phase refinement in a structure and a porosity fraction, and relations describing phase refinement in the structure and the porosity fraction as a function of solidification conditions. The study was conducted on castings of a 22 mm thick plate, made of EN AC-AlSi7Mg0,3 alloy in moulds: of quartz sand, of quartz sand with chill and in permanent moulds. On the basis of cooling curves, values of cooling rate in various casting parts were calculated. The paper also presents results of examination of distance between arms in dendrites of a solid solution α (DASL), precipitations length of silicon in an eutectic (DlSi) and gas-shrinkage porosity (Por) as a function of cooling rate. Statistical relations of DASL, DlSi, Por as a function of cooling rate and statistical multiparameter dependencies describing mechanical properties (tensile strength, yield strength, elongation) of alloy as a function of DASL, DlSi and Por are also presented in the paper.
The Strengthening of Weight Heavy Alloys During Heat Treatment
Authors: Kaczorowski M. , Skoczylas P. , Krzyńska A. , Kaniewski J. 
Published: February 2013

Abstract
The results of studies of W-Ni-Co-Fe experimental alloy, with chemical composition assuring a possibility of producing Ni-based supersaturated solid solution are presented. The alloy was prepared from tungsten, nickel, cobalt and iron powders which were first mixed then melted in a ceramic crucible where they slowly solidified in hydrogen atmosphere. Next specimens were cut from the casting and heated at a temperature 950°C. After solution treatment the specimens were water quenched and then aged for 20 h at a temperature 300°C. The specimens were subjected to microhardness measurements and structure investigations. The latter included both conventional metallography and SEM observations. Moreover, for some specimens X-ray diffractometry studies and TEM investigations were conducted. It was concluded that quenching lead to an increase of tungsten concentration in nickel matrix which was confirmed by Ni lattice parameter increase. Aging of supersaturated solid solution caused strengthening of the Ni-based matrix, which was proved by hardness measurements. The TEM observation did not yield explicit proofs that the precipitation process could be responsible for strengthening of the alloy
Alloyed White Cast Iron with Precipitates of Spheroidal Vanadium Carbides VC
Authors: Kawalec M. , Górny M. 
Published: February 2013

Abstract
The paper presents the results of tests on the spheroidising treatment of vanadium carbides VC done with magnesium master alloy and mischmetal. It has been proved that the introduction of magnesium master alloy to an Fe-C-V system of eutectic composition made 34% of carbides crystallise in the form of spheroids. Adding mischmetal to the base alloy melt caused 28% of the vanadium carbides crystallise as dendrites. In base alloy without the microstructure-modifying additives, vanadium carbides crystallised in the form of a branched fibrous eutectic skeleton.
Testing of mechanical properties has proved that the spheroidising treatment of VC carbides in high-vanadium cast iron increases the tensile strength by about 60% and elongation 14 - 21 times, depending on the type of the spheroidising agent used. Tribological studies have shown that high-vanadium cast iron with eutectic, dendritic and spheroidal carbides has the abrasive wear resistance more than twice as high as the abrasion-resistant cast steel.
New structure of the drive of small-diameter knitting machines
Authors: Skrivanek Josef , Bilek Martin 
Published: February 2013

Abstract:

This paper is concerned with the drive of small-diameter knitting machines and its optimal structure in reference to the knitting process. Based on an analysis of existing machines, a new structure is proposed employing controlled drives. In this proposal, emphasis has been laid on minimising the consumption of electric power and on simplifying the mechanical section of the structure. An analysis of the dynamic characteristics of the newly proposed concept, and a comparison with existing machines has been carried out.
Factors Affecting Oral Health in Non-Commissioned Soldiers of Bangladesh Army attended the Dhaka Combined Military Hospital
Authors: Saha Arup Kumar , Khan Most Shahana Afroge , Al Mamun Shaik Abdullah , Das Diti Rani , Uddin Helal , Kamal Md Mustafa 
Published: February 2013

Aims: A descriptive type of cross-sectional study was conducted comprising 100 non-commissioned soldiers of Bangladesh Army attended Dhaka combined military hospital (CMH) during January to July 2012, to find out the factors affecting their oral health. Materials and Methods: Data were collected by structured questionnaire. Collected data were compiled, tabulated, analyzed by computer using SPSS version 16.0. Results: Mean age of the respondents was 30.16±5.09 (range 20- 41) years where about 60% were married.Most (91%) of themcompleted secondary school certificate. Eightypercent (80%) lived in barracks and 97% had idea about dental diseases and 3% had not.Of all, 73% respondents brushed their teeth once daily and 27%, twice daily.Majority(76%)respondents brushed their teeth at morning and the lowest 11% after breakfast and the rest (13%) brushed their teeth at bed time.Ninety nine percent(99%) respondents used tooth paste as cleaning materials and only 1% respondents used something else.In this study, 40.0% visited dentist once in a year, 17% twice in a year and 43% did never visit dentist without dental problem. Usually48% visited dental chamber for gum bleeding and only 1%visited for regular dental checkups. Among the respondents, 36% visited dental chamber for pain and 15% visited dental chamber for detection of dental caries by themselves. The notable bad habits were not observed among 84.0% of the respondents. A few respondents had smoking (6.0%), betel nut chewing (4.0%) and snuff dipping (3.0%)habits. Of all,63% of the respondents had swelling of gum and 37% had no swelling of gum. Presence and absence of calculus on the gingival margin were found 47% and 53%, respectively. In view of individual perspective,2DMFT had among 40.0% respondents, followed by 1DMFT, 29%, 4DMFT,12%, 3DMFT, 3.0% and 16% respondents had no DMFT. Conclusions: Overall findings suggest that the factors that affect the oral health were smoking, frequency of tooth brushing, having some bat habits and visit to dentist when dental symptoms such as bleeding gums or toothache occurred. Clinical factors included bleeding and swollen gums, toothache and caries. DOI: http://dx.doi.org/10.3329/cdcj.v10i1.13737 City Dent. Coll. J Volume-10, Number-1, January-2013
Le déni de grossesse est-il un déni ?
Authors: Zagury Daniel 
Published: February 2013

Résumé Un malentendu terminologique autour de la confusion du déni de grossesse et du déni d’existence schizophrénique rend compte d’une certaine cacophonie lors de procès très médiatisés comme celui de Véronique Courjault. À partir de Racamier, le déni de grossesse est regardé comme un déni de certaines qualités de l’objet : déni de la conception ; déni des métamorphoses corporelles ; déni d’altérite ; déni du processus vital en cours ; déni de l’inéluctabilité de l’accouchement... La levée de ces dénis, qui ne sont ni des dénégations, ni des dénis partiels, est susceptible de conduire à l’improvisation catastrophique d’un néonaticide au moment d’un accouchement qui n’a jamais été anticipé.
Être fou dans la postmodernité
Authors: Gumpper Stéphane , Escande Claude 
Published: February 2013

Résumé La postmodernité est caractérisée par un changement de discours dans notre lien social, illustré entre autres par des « avancées » technologiques transformant l’homme en objet, dans un zeitgeist (ou esprit du temps) empreint de désenchantement, induisant des formes nouvelles de pathologies. En nous appuyant sur notre praxis à partir du suivi d’un patient hospitalisé en psychiatrie, nous tenterons l’esquisse d’une clinique psychanalytique d’un sujet en « folie ordinaire », non réductible ici à un diagnostic de psychose. Ce patient, a priori toxicomane, semble élaborer des tentatives d’autofondation sinthomatique ( via l’écriture et l’usage de drogues). Celle-ci sont mises au jour en partie par les transferts de Timothy à notre égard, et s’apparentent à des essais constructifs de fragments identitaires censés tenir sur un versant structural. Néanmoins, en place d’exception, il s’affronte à une jouissance pleine, à la fois transgressive et sans limites, le confrontant à l’impossibilité de trouver une place de sujet. Cette jouissance a un prix tel que, sous certains points de vue, elle commence d’opérer comme norme au niveau des constructions discursives dans le champ social.
Objetividad de Estado. Sur la science de gouvernement des Chicago Boys dans le Chili de Pinochet
Authors: Ihl Olivier 
Published: February 2013

Résumé Cet article s’efforce de circonscrire les formes et enjeux de la circulation internationale de certains modèles d’action gouvernementale en revenant sur la littérature prétendument scientifique consacrée à l’aventure des Chicago Boys dans le Chili autoritaire de Pinochet. La puissance dictatoriale chilienne ne fut pas que militaire. Elle fut aussi économique. Ses « élites scientifiques », formées à l’Université de Chicago, formèrent de véritables bastions d’un nouveau militantisme savant. Les Chicago Boys, menés par Milton Friedman, donnèrent légitimité et objectivité à la doctrine économique d’Augusto Pinochet. Comment ses savoirs spécialisés ont-ils été enrôlés par l’État ? Comment cette prétendue science économique s’est-elle constituée en dispositif de gouvernement ? Il importe pour répondre à ces questions de dégager leurs modes de diffusion (logique d’accréditation), leurs procédures de consécration (logique de certification) ainsi que les mobilisations de soutien ou de défiance dont ils pu faire l’objet (logique de légitimation).