bluuebunny/crossref_metadata_2025_split huggingface dataset:
Geochemistry of Riphean terrigenous rocks in the Southern Urals and Siberia and variations of the continental-crust maturity
Authors: Nozhkin A.D. , Maslov A.V. , Podkovyrov V.N. , Turkina O.M. , Letnikova E.F. , Ronkin Yu.L. , Krupenin M.T. , Dmitrieva N.V. , Gareev E.Z. , Lepikhina O.P. 
Published: February 2009

Abstract
We consider the general and specific features of the evolution of the composition of fine-grained terrigenous rocks in the Riphean sedimentary megasequences of the Southern Urals, Uchur-Maya region, and Yenisei Ridge. It has been established that the crust on the southwestern (in the modern frame of references) periphery of the Siberian craton was geochemically the most mature segment of the Riphean continental crust. For example, the fine-grained clastic rocks and metapelites of all Riphean lithostratigraphic units of the Yenisei Ridge have higher median contents of Th than the most mature Paleoproterozoic crust, and in median contents of Y and Cr/Th values they are the most similar to it. In the Southern Urals and Uchur-Maya region, some units of the Riphean sedimentary sequences show median contents of Y and Th and Cr/Th values close to those of primitive Archean crust. Analysis of Cr/Th variations in the fine-grained terrigenous rocks of all three megasequences shows that the minimum Cr/Th values, evidencing a predominance or the abundance of felsic rocks in provenances, are typical of the Riphean argillaceous shales and metapelites of the Yenisei Ridge. The distinct Cr/Th and Cr/Sc increase in the fine-grained clastic rocks of the Chingasan Group of the ridge reflects the large-scale destruction of continental crust during the formation of rift troughs as a result of the Rodinia breakup in the second half of the Late Riphean. The Cr/Th variations in the Lower and Middle Riphean argillaceous shales and mudstones of the Bashkirian mega-anticlinorium and Uchur-Maya region are in agreement, which evidences the subglobal occurrence of rifting in the early Middle Riphean (so-called “Mashak rifting”).
The paleogeographic and stratigraphic confinement of giant floods in West Siberia in the Late Neopleistocene–Holocene
Authors: Zol’nikov I.D. , Gus’kov S.A. 
Published: February 2009

Abstract
The concepts of the role of catastrophic breakthroughs of ice- and rock-dammed and thermokarst lakes in West Siberia in the Late Neopleistocene–Holocene are systematized. The Late Neopleistocene glacial maximum in the mountains and on the plain was obviously at the same time, at 90–60 ka. It has been revealed that the basal part of the Late Quaternary cyclic three-stage upper Ob’ River terrace is formed by catafluvial sediments including boulder-gravels, which descend from the valley edge beneath the water line. The Early Karginian (Kharsoimian) marine layers are spatially related to the valleys of the rushed waters of ice-dammed Lake Ermakovskoe. Substantiation is given to the concept of catastrophic flows that arrived at the plain from the Pamir and Tien Shan mountains in the Holocene Optimum and carried the Aral microfauna through the Turgai trough into the Lake Chany area. Floods resulted from the breakthrough of thermokarst lakes in the north of the West Siberian plain were typical in Karginian and Holocene time. The breakthroughs of moraine-dammed basins in the Altai Mountains took place mainly in Karginian time, whereas the breakthroughs of rock-dammed lakes, in the Sartan and Holocene epochs.
Anti-inflammatory effect of lycopene on carrageenan-induced paw oedema and hepatic ischaemia–reperfusion in the rat
Authors: Bignotto Letícia , Rocha João , Sepodes Bruno , Eduardo-Figueira Maria , Pinto Rui , Chaud Marco , de Carvalho João , Moreno Heitor , Mota-Filipe Helder 
Published: February 2009

The regular intake of tomatoes or its products has been associated with a reduced risk of chronic diseases and these effects have been mainly attributed to lycopene. Here, we evaluated the anti-inflammatory properties of lycopene and its protective effects on organ injury in two experimental models of inflammation. In order to study the effects of lycopene in local inflammation, a carrageenan-induced paw oedema model in rats was performed. Lycopene was administered as an acute (1, 10, 25 or 50 mg/kg, intraperitoneally, 15 min before carrageenan injection) and chronic treatment (25 or 50 mg/kg per d, 14 d). Inflammation was assessed by the measurement of paw volume increase after 6 h. Lycopene significantly inhibited paw oedema formation at two doses (25 and 50 mg/kg) in both acute and repeated administration. The effect of lycopene on liver inflammation was evaluated in a liver ischaemia–reperfusion (I/R) model. Rats were subjected to 45 min of ischaemia of three-quarters of the liver followed by 2 h of reperfusion. In this model, lycopene was administered daily at two doses (25 and 50 mg/kg) during the 14 d that preceded the experiments. Repeated administration of lycopene reduced liver injury induced by I/R, as demonstrated by the reduction of the increase in liver injury markers (aspartate aminotransferase, alanine aminotransferase, lactate dehydrogenase and γ-glutamyl transferase) and attenuation of liver tissue lipoperoxidation was evidenced by a decrease in malondialdehyde production. The present results show that lycopene exhibited local anti-inflammatory activity and also attenuated liver injury induced by I/R. We speculate that lycopene administration might be useful in the pharmacological modulation of inflammatory events.
The effects of different prey regimes on the proteolytic digestion of nymphs of the spined soldier bug, Podisus maculiventris (Hemiptera: Pentatomidae)
Authors: Pascual-Ruiz S. , Carrillo L. , Álvarez-Alfageme F. , Ruíz M. , Castañera P. , Ortego F. 
Published: February 2009

AbstractThe effects of different prey regimes on the performance and digestive physiology of the spined soldier bug, Podisus maculiventris (Say) (Hemiptera: Pentatomidae), were assessed. Specifically, P. maculiventris nymphs were fed on Colorado potato beetle (CPB), Leptinotarsa decemlineata Say (Coleoptera: Chrysomelidae), larvae; Egyptian cotton leafworm (ECW); Spodoptera littoralis (Boisduval) (Lepidoptera: Noctuidae); larvae; Calliphora spp. (CAL) (Diptera: Calliphoridae) pupae or a mixture of the three prey. No differences in development and weight gain were observed when P. maculiventris nymphs were fed different prey species (CPB, ECW or CAL). However, an increase in weight gain and a reduction in the duration of the stadia were observed for nymphs fed with a mixture of the three prey. To investigate the physiological background, biochemical analysis were carried out on insects dissected at the end of the feeding assay. We have found that the proteolytic activity in the salivary glands of P. maculiventris nymphs was not affected by prey species, whereas the relative activity of these proteases in the midgut depends on the prey. Moreover, gel assays proved that the proteolytic profiles of midguts from P. maculiventris nymphs feeding on CPB, ECW and CPB closely resembled those of their prey. All together, these results suggest that P. maculiventris may utilize enzymes from the prey they consume that may facilitate the process of digestion.
The biology ofDactylopius tomentosus(Hemiptera: Dactylopiidae)
Authors: Mathenge C.W. , Holford P. , Hoffmann J.H. , Spooner-Hart R. , Beattie G.A.C. , Zimmermann H.G. 
Published: February 2009

AbstractDactylopius tomentosus(Lamarck) (Hemiptera: Dactylopiidae) is a cochineal insect whose host range is restricted toCylindropuntiaspecies (Caryophyllales: Cactaceae). This insect has been utilized successfully for biological control ofCylindropuntia imbricata(Haw.) F.M. Knuth in Australia and South Africa. Despite this, its biology has not been studied previously, probably due to the widely held belief that the biology of allDactylopiusspecies is similar. This study investigated the life cycle and the morphological and reproductive characteristics ofD. tomentosus. Results revealed some unique characteristics ofD. tomentosus: (i) eggs undergo a much longer incubation period, an average of 17 days compared to <1 day in its congeners; (ii) eggs are laid singly but are retained as an egg mass secured in a mesh of waxy threads attached to the female; (iii) the developmental times of males and females are longer compared to otherDactylopiusspp. due to a longer egg incubation period; (iv)D. tomentosusdoes not undergo parthenogenesis; (v)D. tomentosusis smaller in size than its congeners; and (vi) male mating capacity and reproductive potential were both high and variable between males. There was a significant, strong, positive relationship (r=0.93) between female mass and fecundity, whereas the relationship between the number of females mated per male that became gravid and their fecundity was negative (r=−0.68). Besides contributing to our knowledge of this economically important species, the finding of unique characteristics ofD. tomentosusbiology underlines the need to study each species in this genus.
Teenage Mothers' Experiences of Formal Support Services
Authors: YARDLEY ELIZABETH 
Published: February 2009

AbstractThis article explores support services for teenage mothers. It draws upon empirical evidence from a wider study into the experiences of teenage mothers in the Midlands area of the UK, in which 20 young women who had given birth as teenagers participated in semi-structured interviews about their experiences of support services. The findings are used to make suggestions as to policy regarding support for teenage mothers, arguing that the diverse nature of support needs must be taken into account when designing support services. The article concludes that more attention should be paid to the possibilities of the group mode of support, rather than focusing on support delivered on a one-to-one basis, and, in addition, the functions of support services, beyond encouraging re-engagement in education, employment and training, need to be valued more significantly.
Remodelling the Third Sector: Advancing Collaboration or Competition in Community-Based Initiatives?
Authors: MILBOURNE LINDA 
Published: February 2009

AbstractIn the last decade, UK public agencies have increasingly been required to collaborate with non-state providers to deliver welfare services. Third sector organisations are now providers of services from early years to old age, taking a growing role in children and young people's services in socially deprived neighbourhoods. National policy has recognised third sector expertise in working with marginal groups of people. However, changing relationships with the state have drawn community organisations into new, often uncomfortable, organisational arrangements, affecting their work and their roles in relation to service users and community stakeholders.This article examines recent changes from a third sector perspective, drawing on data from a study of community-based organisations providing children and young people's services in deprived localities. It considers the changing environment of ‘new localism’ affecting these organisations, focusing on recent plans for local area commissioning of services.The article identifies some progress in supporting community services in deprived areas but illustrates how the continuing emphasis on competitive contracts and centrally driven frameworks undermines collaborative work and community trust. It argues that such mechanisms may serve short-term state interests but devalue the very community-level work, which is increasingly being promoted to address challenging social problems.
Factors related to the carriage ofVerocytotoxigenic E. coli,Salmonella, thermophilicCampylobacterandYersinia enterocoliticain cattle, sheep and pigs at slaughter
Authors: MILNES A. S. , SAYERS A. R. , STEWART I. , CLIFTON-HADLEY F. A. , DAVIES R. H. , NEWELL D. G. , COOK A. J. C. , EVANS S. J. , SMITH R. P. , PAIBA G. A. 
Published: February 2009

SUMMARYA 12-month abattoir study was undertaken from January 2003. We collected 7492 intestinal samples from cattle, sheep and pigs at slaughter. Rectal samples were taken from cattle and sheep and caecal samples from pigs. They were examined for verocytotoxigenicE. coli(VTEC) O157,Salmonella, thermophilicCampylobacterandYersinia enterocolitica. Data were collected on the animal from which the sample came and this information was analysed to look at potential risk factors for carriage of these organisms. Logistic regression models were run where an adequate number of positive results were available. This revealed that VTEC O157 carriage in cattle was associated with the summer period and that age was a protective factor.Salmonellacarriage in pigs was associated with lairage times >12 h, the North East and not feeding when there was no bedding available. In cattle, carriage was associated with the summer period, the Eastern region of GB and dairy animals. In sheep a spring seasonal effect was seen, which coincided with the lambing period. The carriage of thermophilicCampylobacterin cattle was associated with single-species abattoirs, with age a protective factor. In sheep, winter was a risk period with lairage management influential. For pigs, lairage times of <12 h were found to be associated with carriage. A seasonal trend for carriage ofY. enterocoliticain all species was demonstrated with the period December–May a risk. For cattle, age was also a risk factor; for sheep feeding in the lairage and for pigs being held overnight were risk factors.
The effect of open-air factors on the virulence and viability of airborneFrancisella tularensis
Authors: HOOD A. M. 
Published: February 2009

SUMMARYUnidentified open-air factors (OAFs) found to be adverse to the survival of microorganisms suspended on microthreads were investigated for their effect on realistic aerosols ofFrancisella tularensisin an open-air environment. This organism was chosen because it is probably the most infectious organism known to be capable of infecting both animals and man via the respiratory route, hence its potential use as a bioterrorist agent. A direct correlation was found between an open-air adverse effect on viability and virulence of airborne particles of <3 μm via the respiratory route in guinea pigs. One viable organism was sufficient to initiate an infection that resulted in a fatal tularaemia infection. The lethal effect of OAFs onF. tularensiswas found to vary from day to day and was related to the source of the air in the UK. The adverse effect on viability was associated with an inverse effect according to the size of the airborne particle.
Vision, eye movements, and natural behavior
Authors: LAND MICHAEL F. 
Published: February 2009

AbstractHistorically, the principal function of vision has been to provide the information needed to support action. Visually mediated actions rely on three systems: the gaze system responsible for locating and fixating task-relevant objects, the motor system of the limbs to carry out the task, and the visual system to supply information to the other two. All three systems are under the control of a fourth system, the schema system, which specifies the current task and plans the overall sequence of actions. These four systems have separate but interconnected cortical representations. The way these systems interact in time and space is discussed here in relation to two studies of the gaze changes and manipulations made during two ordinary food preparation tasks. The main conclusions are that complex action sequences consist of a succession of individual object-related actions, each of which typically involve a turn toward the object (if needed), followed by fixation and finally manipulation monitored by vision. Gaze often moves on to the next object just before manipulation is complete. Task-irrelevant objects are hardly ever fixated, implying that the control of fixation comes principally from top-down instructions from the schema system, not bottom-up salience. Single fixations have identifiable functions (locating, directing, guiding, and checking) related to the action to be taken. Several variants of the basic object-related action scheme are discussed, including single-action events in ball sports involving only one anticipatory gaze shift, continuous production loops in text and music reading, and storage–action alternation in copying tasks such as portrait sketching.
Efficient coding correlates with spatial frequency tuning in a model of V1 receptive field organization
Authors: WILTSCHUT JAN , HAMKER FRED H. 
Published: February 2009

AbstractEfficient coding has been proposed to play an essential role in early visual processing. While several approaches used an objective function to optimize a particular aspect of efficient coding, such as the minimization of mutual information or the maximization of sparseness, we here explore how different estimates of efficient coding in a model with nonlinear dynamics and Hebbian learning determine the similarity of model receptive fields to V1 data with respect to spatial tuning. Our simulation results indicate that most measures of efficient coding correlate with the similarity of model receptive field data to V1 data, that is, optimizing the estimate of efficient coding increases the similarity of the model data to experimental data. However, the degree of the correlation varies with the different estimates of efficient coding, and in particular, the variance in the firing pattern of each cell does not predict a similarity of model and experimental data.
Regular-expression derivatives re-examined
Authors: OWENS SCOTT , REPPY JOHN , TURON AARON 
Published: February 2009

AbstractRegular-expression derivatives are an old, but elegant, technique for compiling regular expressions to deterministic finite-state machines. It easily supports extending the regular-expression operators with boolean operations, such as intersection and complement. Unfortunately, this technique has been lost in the sands of time and few computer scientists are aware of it. In this paper, we reexamine regular-expression derivatives and report on our experiences in the context of two different functional-language implementations. The basic implementation is simple and we show how to extend it to handle large character sets (e.g., Unicode). We also show that the derivatives approach leads to smaller state machines than the traditional algorithm given by McNaughton and Yamada.
The neuropsychological profile of a subclinical obsessive-compulsive sample
Authors: KIM MYUNG-SUN , JANG KYOUNG-MI , KIM BIT-NA 
Published: February 2009

AbstractWe investigated the neuropsychological profile of subjects in a subclinical obsessive-compulsive disorder (OCD) sample. Psychometrically defined subclinical obsessive-compulsive (n = 21) and control (n = 22) subjects were examined. Comprehensive neuropsychological tests evaluating verbal/nonverbal memory, attention, and executive function were administered. The subclinical obsessive-compulsive group showed poorer performances on the Wisconsin Card Sorting Test (WCST), F(1, 41) = 13.80, p < .001, and Trail-Making Test (TMT), F(1, 41) = 5.48, p < .05, compared with the control group. The subclinical obsessive-compulsive group showed higher rates of total errors, perseverative errors, and perseverative responses. In addition, the subclinical obsessive-compulsive group committed a greater number of errors in the TMT. However, the groups showed no performance differences in the TMT after controlling for the effects of depression and anxiety, F(1, 39) = 0.11, p = .739. These results suggest that subclinical obsessive-compulsives seemed to display deficits in executive functioning. This neuropsychological profile is consistent with current theories proposing that executive dysfunction may serve as the pathophysiological mechanism underlying the development of obsessive-compulsive disorder. (JINS, 2009, 15, 286–290.)
The effects of treatment for posterior fossa brain tumors on selective attention
Authors: MABBOTT DONALD J. , SNYDER JANICE J. , PENKMAN LOUISE , WITOL ADRIENNE 
Published: February 2009

AbstractWe sought to identify whether deficits in selective attention are present in pediatric brain tumor patients. Selective attention was assessed with covert-orienting, filtering, and visual-search tasks in 54 patients with either (1) posterior fossa (PF) tumors treated with cranial radiation and surgery (n = 22); (2) PF tumors treated with surgery alone (n = 17); or (3) non-CNS tumors (n = 15), who served as a patient control group. To account for normal development, patient performance was also compared with that of healthy age-matched controls (n = 10). We found that in PF tumor patients selective attention was impaired, regardless of whether they were treated with cranial radiation and surgery or surgery alone. However, patients treated with cranial radiation were most impaired. These patients may have greater damage to posterior brain regions know to mediate selective attention as the result of tumor location, effects of surgery, and higher doses of radiation to the posterior regions of the brain. These findings help to elucidate the potential impact of pediatric brain tumors and their treatment on discrete attentional skills. (JINS, 2009, 15, 205–216.)
Progressive decline of decision-making performances during multiple sclerosis
Authors: SIMIONI SAMANTA , RUFFIEUX CHRISTIANE , KLEEBERG JOERG , BRUGGIMANN LAURE , DU PASQUIER RENAUD A. , ANNONI JEAN-MARIE , SCHLUEP MYRIAM 
Published: February 2009

AbstractThe purpose of this study was to evaluate longitudinally, using the Iowa Gambling Task (IGT), the dynamics of decision-making capacity at a two-year interval (median: 2.1 years) in a group of patients with multiple sclerosis (MS) (n = 70) and minor neurological disability [Expanded Disability Status Scale (EDSS) ≤ 2.5 at baseline]. Cognition (memory, executive functions, attention), behavior, handicap, and perceived health status were also investigated. Standardized change scores [(score at retest-score at baseline)/standard deviation of baseline score] were computed. Results showed that IGT performances decreased from baseline to retest (from 0.3, SD = 0.4 to 0.1, SD = 0.3, p = .005). MS patients who worsened in the IGT were more likely to show a decreased perceived health status and emotional well-being (SEP-59; p = .05 for both). Relapsing rate, disability progression, cognitive, and behavioral changes were not associated with decreased IGT performances. In conclusion, decline in decision making can appear as an isolated deficit in MS. (JINS, 2009, 15, 291–295.)
Long-term cognitive function following chemotherapy in patients with testicular cancer
Authors: PEDERSEN ANDERS DEGN , ROSSEN PHILIP , MEHLSEN MIMI YUNG , PEDERSEN CHRISTINA GUNDGAARD , ZACHARIAE ROBERT , VON DER MAASE HANS 
Published: February 2009

AbstractCancer patients frequently report cognitive complaints following chemotherapy, but the results from the available studies, mainly of women with breast cancer, are inconsistent. Our aim was to compare cognitive function of men with testicular cancer (TC) who had orchiectomy and chemotherapy (bleomycin, etoposide, cisplatin) with men who had orchiectomy only or orchiectomy and radiotherapy. Thirty-six chemotherapy patients and 36 nonchemotherapy patients were tested 2–7 years after treatment for TC with standardized neuropsychological tests. Chemotherapy and nonchemotherapy patients displayed similar performances on cognitive tests (p values adjusted for multiple comparisons: .63–1.00). Moreover, there was no difference in the proportion of cognitively impaired patients in the chemotherapy group (5.6%) compared to the nonchemotherapy group (8.3%) (χ2 = 0.22, p = .64). Our results are discordant with previous findings indicating cognitive impairment following chemotherapy and suggest that TC patients do not need to fear long-term cognitive consequences following chemotherapy. (JINS, 2009, 15, 296–301.)