bluuebunny/crossref_metadata_2025_split huggingface dataset:
Linear Transgressive Shoreface Sandbodies Controlled by
Fluctuations of Relative Sea Level
Authors: Burton Jamie , Walker Roger G. 
Published: November 2010

Abstract
The Viking Formation in the Joffre-Fenn area consists of 1) a lower succession of regionally extensive, stacked, sandier-upward successions of open marine to shoreface bioturbated sandy mudstone and muddy sandstone, overlain by 2) a series of long, narrow, linear sandbodies with controversial depositional environments. The lower extensive successions are cut by several bounding discontinuities (BD surfaces). Following the first major drop of relative sea level, BD1 represents a surface of marine transgression, and during a pause in transgression, a shoreface succession prograded northeastward. The succession between BD1 and the next surface BD2 IT (IT = initial transgression) or BD2 RT (RT = resumed transgression) comprises the oil-producing sandbody in the Fenn area. A second major drop in relative sea level was followed by a second transgression on surface BD2 IT. In this paper we contrast our interpretation of prograding shoreface deposits with that of J. MacEachern et al. (2, this volume). They have interpreted the main Joffre sandbody as a series of northeast-prograding bayhead deltas that built into a lagoon, barred to the northeast. Whatever its environment, the sandbody was truncated by a resumed rise of relative sea level, forming surface BD2 RT. The linear sandbody at Joffre (a shoreface in our interpretation) dies out southeastward along-strike, and it appears to be a coincidence that Fenn (producing from the BD1-BD2 IT or RT interval) is exactly along-strike from Joffre, where oil production is from the BD2 IT-BD2 RT interval. We suggest that the linear sandbodies in the Joffre-Fenn area are neither ridges, wedges, nor tongues. Exact depositional environments are controversial. This paper examines the reasoning behind the different interpretations, and shows that sandbodies exactly along-strike from each other are not necessarily at the same stratigraphic horizon.
Cretaceous Sussex Sandstone in House Creek Field (Wyoming, Usa):
Transgressive Incised Shoreface Deposits
Authors: Bergman Katherine M. 
Published: November 2010

Abstract
The Upper Cretaceous Sussex Sandstone at House Creek field (Powder River Basin, Wyoming) has previously been interpreted as a prograding succession of sandstones that were transported southeastward by currents along a relatively shallow marine shelf. These sandstones were deposited many tens of kilometers seaward of the shoreline and a few tens of kilometers from the inferred shelf-slope break. Sand was believed to have been reworked by shelf processes into an offshore bar complex. This interpretation poses difficult problems and fails to account for several of the features observed in the Sussex including 1) pebbly sandstone, 2) stratigraphic variability of the sandstone, 3) erosional base and top of the Sussex and 4) regionally extensive depositional discontinuities marked by juxtapositions of facies, eroded mudstone clasts, glauconite and chert pebbles. These features suggest that fluctuations in rates of relative sea level change were important during Sussex deposition.
In the House Creek area, the base of the Sussex is a shallow northwesterly dipping planar surface with respect to the lower silry marker and is characterized by the abrupt appearance of interbedded sandstone and bioturbated mudstone on top of black mudstone. Burrows of the Glossifungites ichnofacies commonly occur along this contact. The top of the Sussex is marked by an abrupt change from pebbly sandstone to conglomerate which passes upward through pebbly bioturbated sandstone and pervasively bioturbated pebbly mudstone into laminated black mudstone.
The presence of erosional discontinuities in the Sussex Sandstone is suggested by 1) a sharp basal erosion surface that truncates underlying parasequences in the Cody Shale, 2) burrows of the Glossifungites ichnofacies at the basal contact, 3) lateral continuity of the individual facies contained between the discontinuity surfaces, 4) abrupt vertical facies changes and the association of glauconite, chert pebbles and mudstone rip-up clasts with these changes, 5) stratigraphic variability of the sandstones and 6) erosional termination of sandstone deposition and progradation. These discontinuities are characterized by an erosional escarpment with steeper landward margins that flatten basinward. This geometry and the linearity of the overlying sandstone contained in these erosional escarpments suggest incised shoreface deposits. These asymmetrical escarpments and their overlying sandstone form a rerrogradarional stacking pattern suggesting shoreface incision during an overall transgression. The Sussex Sandstone in the House Creek area is reinterpreted here as six back stepping incised shoreface deposits for med during a transgression punctuated by periods of decreased rates of relative rise and/or relative stillstand
The Shannon Sandstone and Isolated Linear Sand Bodies:
Interpretations and Realizations
Authors: Suter John R. , Clifton H. Edward 
Published: November 2010

Abstract
Isolated linear sand bodies in the Cretaceous Western Interior Seaway have been remarkably resistant to a consensus interpretation. The best known of these deposits is the Shannon Sandstone, the primary focus of this volume and the SEPM Research Conference from which it derived. Our purpose in this summary paper is to attempt an objective evaluation of the various interpretations for the Shannon, given our own backgrounds, experience, and resultant biases. We are not charged with coming up with our own model for this enigmatic deposit and its isolated linear sand body siblings. We compare and find substantial differences in the investigators' perceptions of the Shannon in outcrop in the Salt Creek anticline area in northeastern Wyoming and in the subsurface in the relatively nearby Hartzog Draw Field. We examine their interpretations in light of modern analogues and paleogeographic constraints and conclude that no interpretation proposed to date adequately explains all aspects of the Shannon. We suspect that the Shannon Sandstone may be more complex than previously thought and that a single interpretation may not be sufficient to explain the whole system. We also came away with renewed respect for the principle of multiple working hypotheses.
Overview of Carbonate Platform Sequences, Cycle Stratigraphy and Reservoirs in Greenhouse and Ice-House Worlds
Authors: Read J.F. 
Published: November 2010

Abstract
In this part we will examine in general terras how carbonate cycles are generated on carbonate platforms, types of carbonate cycles developed, stacking patterns, margin geometries, degree of disconformity development, and briefly overview any characteristic diagenetic effects. In order to do this, a brief review of controls on carbonate deposition, platform types, and sequence stratigraphy is given. This is followed by discussions of cycle development in greenhouse, transitional and icehouse worlds with brief examination of examples. I would like to emphasize that our understanding of climatic forcing of the cyclic stratigraphic record is still simplistic, and any of the models presented are tentative, and certainly will be modified and refined in the future.
Part 2 (by Charlie Kerans) will examine cycles and one- and two-dimensional stacking patterns, high resolution stratigraphy, and reservoir geometry on Late Permian platforms in the Permian Basin of West Texas, using examples and exercises from Guadalupe Mt. outcrops, and outcrop and core data from a major Permian reservoir. The Late Permian examples typically reflect relatively low amplitude sea level fluctuations, following collapse of the Permo-Carboniferous ice-sheets. Part 3 (by Jim Weber, Rick Sarg and Frank Wright) will examine reservoirs formed in an ice-house world during the major Carboniferous glaciation of Gondwana, using the Middle Pennsylvanian carbonates of the Giant Aneth oil field, Paradox Basin, Utah. Again, outcrop and subsurface data are used to develop a regional sequence stratigraphic framework, and the controls on facies development and reservoir quality of these stratified reservoirs examined.
Use of One- and Two-Dimensional Cycle Analysis in Establishing High-Frequency Sequence Frameworks
Authors: Kerans Charles 
Published: November 2010

Abstract
The central goal of this contribution is to development new methods for describing and modeling carbonate reservoirs. This pair of exercises focuses on establishing a high-resolution sequence framework for shallow-water platform-top carbonate reservoir strata and, for these specific examples, mixed-carbonate-clastic successions. The scale of particular interest is that of several thousand feet laterally and several hundred feet vertically, a scale useful in reservoir description and modeling.
Specific topics for this discussion will be the development of a sequence stratigraphic framework that integrates observations from core, wireline logs, and outcrop analogs. This approach is similar to that applied by Van Wagoner et al (1988, 1990) for siliciclastic reservoirs. It downplays the emphasis on stratal geometry, the dominant player in seismically oriented sequence stratigraphy, putting it on par with other sequence stratigraphic tools, including cycle hierarchy, cycle stacking (both thickness and symmetry), facies proportions, and facies tract offset.
Nonlinear Dynamics and Fractals
Authors: Middleton Gerard V. , Plotnick Roy E. , Rubin David M. 
Published: November 2010

Abstract
The intention of these notes is to provide sedimentary geologists with an introduction to the new techniques for analyzing experimental and observational data provided by the rapid development of those disciplines generally known as Fractals and Nonlinear Dynamics (chaos theory). A general introduction to a minimum of theory is given, but most of the space is devoted to show how these ideas are useful for interpreting sedimentary data. The main applications are likely to be time series or spatial profiles or two-dimensional maps or images. Sedimentary geologists deal every day with actual time series, such as measurements of current velocity or suspended concentration at a station, or with virtual time series, such as stratigraphic sections, well logs, or topographic profiles yet few geologists know much about the new numerical techniques available to analyze such data.
Time Series Analysis II
Authors: Middleton Gerard V. 
Published: November 2010

Most methods of analysing time series carry out the numerical analysis on the time series itself. This is because the investigator is basically interested in the variable x = f(t) that has actually been measured. But an alternative approach is to suppose that the variable that was measured is merely one of several that might be measured as output from a dynamical system, which might indeed be better characterized using some other variable. For example, fluid converting in a box might be characterized by a probe measuring temperature or velocity at one point in the box, or by some other measurement, as a function of time. If the governing equations for the system are not known, it is also not possible to identify the fundamental variables which should be measured, or even how many of them there are. In this case, one might think that it is impossible to use measurements made on a single, arbitrarily chosen variable to reconstruct any important properties of the full multidimensional system. As we have seen, it is generally not even clear from simply examining the output x, whether or not the system producing x is stochastic or a nonlinear dynamical system of relatively low dimension.
But if, in fact, the signal is a product of a low dimension deterministic system then it turns out that it is possible to reconstruct all the major topological properties of the system, by a technique known as embedding. The basic idea seems to have been discovered independently
Finite codimensional linear isometries on spaces of differentiable and Lipschitz functions
Authors: Koshimizu Hironao 
Published: November 2010

Abstract
We characterize finite codimensional linear isometries on two spaces, C
(n)[0; 1] and Lip [0; 1], where C
(n)[0; 1] is the Banach space of n-times continuously differentiable functions on [0; 1] and Lip [0; 1] is the Banach space of Lipschitz continuous functions on [0; 1]. We will see they are exactly surjective isometries. Also, we show that C
(n)[0; 1] and Lip [0; 1] admit neither isometric shifts nor backward shifts.
The investigation of sensing mechanism of ethanol vapour in polymer-nanostructured carbon composite
Authors: Sakale Gita , Knite Maris , Teteris Valdis , Tupureina Velta , Stepina Santa , Liepa Elina 
Published: November 2010

Abstract
Polymer-nanostructured carbon composites (PNCC) using three different polymers as composite matrix materials (polyvinylacetate (PVAc), polyethylene glycol (PEG) and ethylene-vinylacetate copolymer (EVA)) have been developed. High structure carbon black Printex XE2 (Degussa AG) was used as a composites filler. Ethanol vapour sensor-effect of composites was determined as a change of electrical resistance as the composite was held in ethanol vapour for 30 seconds. Reversibility of electrical resistance of PNCC, response stability and repeatability have been measured and compared. The electrical resistance response of EVA-nanostructured carbon composite (EVA-NCC) to ethanol vapour as a function of vinylacetate content in the copolymer has been evaluated. Promising ethanol vapour sensor-effect has been observed for PEG-NCC followed by PVAc-NCC and EVA-NCC.
Relationship between plant life forms and ecological indices in a lacustrine ecosystem
Authors: Nikolić Ljiljana , Čobanović Katarina , Nićin Slobodan 
Published: November 2010

Abstract
This study is the first to analyze the relationship between ecological indices (substrate moisture, nutrient content, substrate dispersion/aeration, substrate pH and humus content) and life forms of the vascular flora in and around Lake Provala; these relationships may serve as reliable indicators of the ecological conditions prevailing in this ecosystem. Since the development of certain life forms, in addition to climatic conditions, depends on plant requirements for several major environmental factors expressed as ecological indices, we established the relationship between the ecological index and life form of vascular plants collected over an eight year period in this system using correspondence analysis. We found a significant correlation between the development of certain life forms and levels of substrate moisture, nutrient content and substrate dispersion/aeration. These relationships help explain the predominance of hemicryptophytes and hydro-helophytes in the riparian zone of the lake, as these forms are perfectly adapted to water-saturated or aquatic environments rich in nutrients and relatively well aerated. There was no significant relationship between life forms and substrate pH or the content of organo-mineral compounds (humus) in the soil.
Congenital herniation through the foramen Morgagni — clinical presentation, diagnosis and treatment in pediatric population
Authors: Anđelka Slavković , Zoran Marjanović , Ivona Đorđević , Zorica Jovanović , Ivana Budić 
Published: November 2010

Abstract
Congenital Morgagni hernia is a rare entity, accounting for less than 1,5% of all types of congenital diaphragmatic hernias. The majority of Morgagni hernias are diagnosed late because patients can be asymptomatic or present with non-specific respiratory and gastrointestinal symptoms and signs. The medical records of all patients diagnosed with CMH and treated in our hospital were retrospectively reviewed for age at diagnosis, sex, site of hernia, clinical symptoms, associated anomalies, operative findings and treatment. Over a 20-year period, 5 cases with CMH diagnoses were hospitalized and operated. The age of diagnosis ranged from nine months to 11 years. Male to female ratio was 3:2. Associated anomalies were seen in 2 patients (40%). Most patients had transabdominal operations. There were no complications in the postoperative period. Morgagni hernia is a rare condition. The rarity is due to the nonspecific presentation of symptoms, which contributes to a delay in diagnosis. We advocate surgical repair even in asymptomatic patients, because of the risk of strangulation. There is a low rate of complications.
Prognostic factors for positive immune thrombocytopenic purpura outcome after laparoscopic splenectomy
Authors: Kiudelis Mindaugas , Mickevicius Antanas , Dambrauskiene Ruta , Gerbutavicius Rolandas , Griniūtė Rasa , Adukauskiene Dalia 
Published: November 2010

Abstract
Laparoscopic splenectomy is considered as a second step treatment for ITP patients. The purpose of this study was to determine efficiency of laparoscopic splenectomy for ITP patients and to identify the independent prognostic factors that may predict the positive outcome. Two hundred and thirty nine patient medical records were analyzed retrospectively. The special questionnaire, which included present platelet count, the steroid usage and its dosage, was sent to all patients. The complete response (CR) was defined, when the platelet count was above 130 × 109 /L. The 239 adult patients with a median age of 51.3 (16–93 years) were included in this cohort. The median follow up period was 75 months. 49 patients, who relapsed after steroid treatment, underwent laparoscopic splenectomy. The short term postoperative CR was 71.4% after laparoscopic splenectomy compared to 38.1% in non-splenectomized patients (p < 0.000). The long term CR was 79.5 % in patients after splenectomy compared to 47.4% in non-splenectomized patients (p < 0.018). After univaried analysis three clinical variables were found to be significantly related to splenectomy outcome: disease duration (p<0.007), preoperative platelet count (p<0.049) and platelet count on the third postoperative day (p<0.000). Multiple logistic regression analysis demonstrated, that only platelet count on the 3rd postoperative day > 129 × 109 /L; RR=53.3 95% (CI, 1.888–1517.98) was significant predictor for long-term positive ITP outcome after laparoscopic splenectomy. Splenectomy is effective treatment for ITP. Platelet count > 129 × 109/L on the third postoperative day is the significant predictor of positive long-term outcome after laparoscopic splenectomy.
Transport phenomena in an agitated vessel with an eccentrically located impeller
Authors: Cudak Magdalena , Karcz Joanna , Kiełbus-Rąpała Anna 
Published: November 2010

AbstractThe paper presents results of an experimental analysis of the transport phenomena at the vicinity of the wall of an unbaffled agitated vessel with an eccentrically located impeller. Distributions of the transport coefficients were experimentally studied using an electrochemical method within the turbulent regime of the Newtonian liquid flow. Measurements were carried out in an agitated vessel with the inner diameter T = 0.3 m. Liquid height in the vessel was equal to the inner diameter, H = T. The agitated vessel was equipped with a Rushton or a Smith turbine or an A 315 impeller. Eccentricity of the impeller shaft was varied from 0 to 0.53. Local values of the dimensionless shear rate, shear stress, dynamic velocity and friction coefficient were integrated numerically for the whole surface area of the cylindrical wall of the vessel. Averaged values of these quantities were correlated with the impeller eccentricity and modified Reynolds number. The proposed Eqs. (5)–(8), with the coefficients given in Table 2, have no equivalent in open literature concerning this subject. Distributions of the shear rate, γ/n, and friction coefficient, f, at the vicinity of the cylindrical wall of the unbaffled vessel equipped with eccentric Rushton or Smith turbine or A 315 impeller are very uneven and they depend significantly on the impeller eccentricity, e/R. Maximum local values of these variables are located on the wall section closest to the impeller blades. From among the tested impellers, the greatest effects of the impeller eccentricity, e/R, and the liquid turbulence (described by the modified Reynolds number Re P,M) on the averaged dimensionless shear rate (γ/n)m and friction coefficient, f m, are found for the radial-flow Rushton turbine located eccentrically in an unbaffled agitated vessel.
Semiquinol and phenol compounds from seven Senecio species
Authors: Mandić Boris , Gođevac Dejan , Vujisić Ljubodrag , Trifunović Snežana , Tesević Vele , Vajs Vlatka , Milosavljević Slobodan 
Published: November 2010

AbstractIn this paper, examination of the aerial parts of seven Senecio species from Serbia and Montenegro is reported. Phytochemical investigation of Senecio erucifolius led to the isolation and characterization of semiquinol butyl 2-(1-hydroxy-4-oxocyclohexa-2,5-dienyl)acetate (I), along with methyl 2-(1-hydroxy-4-oxocyclohexa-2,5-dienyl)acetate (jacaranone, II), and methyl 2-(4-hidroxyphenyl)acetate (III). The structure of I was established based on spectroscopic studies (1H- and 13C-NMR, IR, and CI-MS). Compound II was also isolated from S. carpathicus and S. subalpinus. The presence of jacaranone in the methanol extracts of S. wagneri, S. othonnae, and S. paludosus was confirmed by LC/ESI-TOF MS.
Synthesis and antimicrobial properties of new 2-((4-ethylphenoxy)methyl)benzoylthioureas
Authors: Limban Carmen , Missir Alexandru , Chirita Ileana , Nitulescu George , Caproiu Miron , Chifiriuc Mariana , Israil Anca 
Published: November 2010

AbstractNew acylthiourea derivatives, 2-((4-ethylphenoxy)methyl)-N-(phenylcarbamothioyl)benzamides, were tested by qualitative and quantitative methods on various bacterial and fungal strains and proved to be active at low concentrations against Gram-positive and Gram-negative bacteria as well as fungi. These compounds were prepared by the reaction of 2-((4-ethylphenoxy)methyl)benzoyl isothiocyanate with various primary aromatic amines, and were characterised by melting point and solubility. The structures were identified by elemental analysis, 1H and 13C NMR, and IR spectral data. The level of antimicrobial activity of the new 2-((4-ethylphenoxy)methyl)benzoylthiourea derivatives was dependent on the type, number and position of the substituent on the phenyl group attached to thiourea nitrogen. The iodine and nitro substituents favoured the antimicrobial activity against the Gram-negative bacterial strains, while the highest inhibitory effect against Gram-positive and fungal strains was exhibited by compounds with electron-donating substituents such as the methyl and ethyl groups.
Synthesis, characterisation, and biological activity of three new amide prodrugs of lamotrigine with reduced hepatotoxicity
Authors: Sinha Saurabh , Shrivastava Prabhat , Shrivastava Sushant 
Published: November 2010

AbstractLamotrigine (LTG) is an antiepileptic drug used for the prevention of convulsions. Except several known side effects, hepatic dysfunction is also reported. Hepatotoxic side effects occur due to the dichlorophenyl moiety which develops an abnormally low level of glutathione. Depletion of glutathione causes oxidative stress and hepatic cell damage. The goal of the present study was to test the action and side effects of the three compounds synthesised and compared to LTG. Three amide prodrugs of LTG were synthesised by its reaction with N-acetylamino acids, viz, glycine, glutamic acid, and methionine. Purified synthesised prodrugs were subjected to thin layer chromatography, melting point, solubility and partition coefficients determination and characterised by UV, FTIR, 1H and 13C NMR spectroscopy. The synthesised prodrugs were subjected to in vitro hydrolysis and to anticonvulsant and hepatotoxic activity studies. Significant reduction in hepatotoxicity and comparable anticonvulsant activities were obtained in all synthesised prodrugs as compared to LTG.