bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effect of Carbonates and Bivalent Cations and Their Relationships with Soil Organic Matter from the View Point of Aggregate Formation
Authors: Vladimír Šimanský , Marek Kolenčík , L'ubica Puškelová 
Published: May 2015

Abstract
The effect of carbonates on soil structure has not been sufficiently studied yet, despite the fact that in the literature their positive impact is mentioned mostly. Carbonates are the source of bivalent cations in soil solution and may be involved in stabilization of the aggregates, because negatively charged organic materials can be adsorbed onto the surface of clay by bivalent or polyvalent cations. We studied the effect of carbonates and bivalent cations and their relationships with soil organic matter (SOM) from the point of view of aggregate formation. The studies were carried out in several fields located on loamy Calcaric Chernozem, loamy Haplic and Mollic Fluvisols. The results showed that between exchangeable Mg2+ and water-stable macro-aggregates (WSAma) in size fractions >2 mm, positive correlations were found; however, the content of Mg2+ negative correlated with the contents of WSAma in <1 mm fractions as well as with waterstable micro-aggregates (WSAmi). The threshold limit for Mg2+ content for the formation of water-stable macro-aggregates was at 11.5 cmol/kg if all loamy soils were assessed together. A further increase resulted in a lower content of WSAma. If all investigated soils were assessed separately, these results did not enable us to distinguish the maximum formation of WSAma by Mg2+ in individual soils. We observed a positive correlation between the sum of basic exchangeable cations (SBC) as well as between cation exchange capacity (CEC) and larger size fractions of WSAma >2 mm; however, between SBC as well as CEC and smaller size fractions of WSAma >1 mm and WSAmi negative correlations were observed. Statistically significant negative correlations were observed between SOM content in WSA and carbonate content, and this effect was stronger in relation to the labile carbon. There were also positive correlations between SOM in WSA and SBC and CEC found if all loamy soils were assessed together.
Bacterial Communities in Rhizosphere of Maize Studied by T-RFLP
Authors: Ondreičková Katarína , Ficek Andrej , Mihálik Daniel , Gubišová Marcela , Hudcovicová Martina , Drahovská Hana , Kraic Ján 
Published: May 2015

Abstract
The terminal restriction fragment length polymorphism munities from different collecting places was evaluated was used to determine the bacterial diversity in rhizo- by principal component analysis. Results showed that sphere of maize (Zea mays L.) collected from four sites the most different bacterial community originated from of experimental field plot in two dates of the vegetation marginal part of the experimental field plot collected in season (July and September). The 16S rRNA gene was September was caused probably by combination of the amplified from metagenomic DNA using universal eubac- marginal effect and drought before sampling date in Sep- terial primers and PCR products were digested separately tember. Other rhizosphere samples showed from moderate with three restriction enzymes. Significant differences in to small differences in the structure of the bacterial com- the number of terminal restriction fragments among rhi- munity. Nevertheless, significant differences among all zosphere samples and between sampling dates were not collected bacterial communities were not observed. detected (P < 0.05). Variation within the bacterial communities from different collecting places was evaluated by principal component analysis. Results showed that the most different bacterial community originated from marginal part of the experimental field plot collected in September was caused probably by combination of the marginal effect and drought before sampling date in September. Other rhizosphere samples showed from moderate to small differences in the structure of the bacterial community. Nevertheless, significant differences among all collected bacterial communities were not observed.
Two Effects of the European Financial Crisis
Authors: Saucedo Acosta Edgar J. , Rullán Rosanis Samantha 
Published: May 2015

Abstract

Background: The European financial crisis has affected most of the EU member states, and European institutions have had to create new financial instruments to counter the impact. Most effects in the economic and political spheres can be attributed to high unemployment and changes in governments in peripheral countries (Greece, Ireland, Portugal, Spain and Romania). Objectives: The aim of this paper is to demonstrate the economic and political effects of the European financial crisis in some peripheral countries that have implemented austerity policies. Methods/Approach: The methodology used is mixed: an analysis of the primary economic variables of the selected countries in comparison to those of countries with low-risk premium was performed, and the relation between the bailouts and elections was presented. Results: The exacerbation of the crisis in the Eurozone is mainly due to the high political costs of austerity measures and not the high level of public spending and/or the alternations in the governments of peripheral countries. Conclusions: The European financial crisis is primarily a result of weak economic governance, and its effects are differentiated. The peripheral countries possess the highest rates of unemployment, and there is a higher tendency towards political instability in rescued countries.
Digital Immigrants and Digital Natives: Learning Business Informatics at Higher Educational Level
Authors: Suša Dalia 
Published: May 2015

Abstract

Background: The term digital natives refer to those born since the 1980s and have been growing up surrounded by technology. On the other hand, digital immigrants are born before 1980s and learned how to use technology later in life. Objectives: Goal of the paper is to explore attitudes of digital native students on the course of Business Informatics at higher educational institutions (HEIs), and to compare them with attitudes of digital immigrants. Methods/Approach: The survey was conducted in 2014 using the sample of first-year Business Informatics students from the Faculty of Economics and Business in Zagreb, Croatia. Results were compared with a research conducted in 1998. Results: In comparison to an earlier research, digital natives perceive their level of competency in the subject of Business Informatics before teaching practices much higher compared to digital immigrants. However, there is still an increase in digital native students’ level of competency in the subject before and after teaching practices. Conclusions: The research confirms a shift from digital immigrants to digital natives who show high level of interest for Business Informatics course topics and find its utility very high. However, constant improvement of delivering knowledge is needed in order to keep these high levels.
Accounting Information Systems Implementation and Management Accounting Change
Authors: Bredmar Krister , Ask Urban , Frisk Elisabeth , Magnusson Johan 
Published: May 2015

Abstract

Background: There is an on-going discussion within management accounting research regarding how to work with performance measures. In the process of developing new forms of performance measurement the task of choosing business metrics is central. This process is closely connected to the implementation of IT solutions. Objectives: In order to understand how new performance measurement solutions are implemented and used, it becomes crucial to understand how measures are selected and how new accounting information systems (AIS) are developed and implemented. Methods/approach: The paper builds on the case of an on-going AIS project at a large, public university in Sweden. The empirical material was collected using a semi-action research approach over a two-year period. The majority of the material comes from written documentation and minutes. Results: Even though the implementation of a new AIS triggers a change in the management accounting practice, this study shows that this is done in more than one perspective. Conclusions: As the project develops, new priorities and objectives evolve, which in the end shape what management accounting change becomes.
The Catalogue of “Alexandru RoȘca” Spider Collection from the “Grigore Antipa” National Museum of Natural History (Bucharest). II. Mimetidae, Oxyopidae, Pholcidae, Pisauridae, Theridiidae
Authors: Fedoriak Mariia , Moscaliuc Liviu Aurel 
Published: May 2015

Abstract
We verified 145 specimens of Mimetidae, Oxyopidae, Pholcidae, Pisauridae, Theridiidae spiders from the “Alexandru Roșca” collection deposited in the “Grigore Antipa” National Museum of Natural History, Bucharest. Re-identification of the specimens actually presented in the Bucharest museum yielded records of 2 spider species not previously recorded for Romania: Pholcus ponticus Thorell, 1875 (Sibiu County) and Pisaura novicia (L. Koch, 1878) (Dâmbovița County). Pisaura novicia is further recorded from northern Dobrogea (Romania) and for the first time from the physiographic zone of the Ukrainian Carpathians based on our own material.
The Orthoptera (Insecta) from Middle and Lower Prut River Basin
Authors: Iorgu Ionuţ Ştefan , Iorgu Elena Iulia , Stahi Nadejda 
Published: May 2015

Abstract
The ecological preferences and bioacoustics of bush-crickets, crickets and grasshoppers species were studied in middle and lower Prut River basin, a research conducted in 55 localities from Romania and 33 localities in the Republic of Moldova. A total number of 91 species of Orthoptera were collected in the study area: 85 species encountered on the western side of Prut River basin (9 Phaneropteridae, 24 Tettigoniidae, 1 Bradyporidae, 5 Gryllidae, 1 Gryllotalpidae, 1 Tridactylidae, 5 Tetrigidae, 39 Acrididae) and 76 species found on the eastern side (7 Phaneropteridae, 19 Tettigoniidae, 1 Bradyporidae, 5 Gryllidae, 1 Gryllotalpidae, 1 Tridactylidae, 3 Tetrigidae, 39 Acrididae). Four species are recorded for the first time in the Orthoptera fauna of the Republic of Moldova: Barbitistes constrictus (Fabricius), Poecilimon fussii Brunner von Wattenwyl, Metrioptera roeselii fedtschenkoi (Saussure) and Pholidoptera frivaldskyi (Herman).
Landslides and Herpetofauna: a Preliminary Evaluation of Habitat Suitability
Authors: Pop Dorin Alexandru , Chițu Zenaida 
Published: May 2015

Abstract
Over the last few years the ecological role of mass-movements in maintaining biodiversity became more aknowledged in scientific literature. Their disturbance effect on ecosystems ensures a high diversity of habitats in a background matrix, with certain effects on vegetation and fauna, at landscape level. We studied between 2009 and 2012 the interrelations between geomorphological features created by active landslides, aquatic habitats and pond-reproducing herpetofauna species, from a study area located in the Subcarpathian part of Doftana river valley (Curvature Subcarpathians, Prahova County, Romania).
The Zooplankton of the Danube-Black Sea Canal in the First two Decades of the Ecosystem Existence
Authors: Zinevici Victor , Parpală Laura , Florescu Larisa , Moldoveanu Mirela 
Published: May 2015

Abstract
This paper reports the invasive subspecies Podonevadne trigona ovum (Zernov, 1901), as dominant in the Danube-Black Sea Canal. In the first two years of the existence of the anthropogenic ecosystem (1985-1986) the zooplankton summarizes only 72 species. Over two decades it recorded the presence of 127 species. As a result of nutrient accumulation, in 2005, the zooplankton abundance has significantly increased, reaching 330 ind L-1, followed by an evident growth of biomass (2285 μg wet weight L-1). In 2005, the productivity registered 731.8 μg wet weight L-1/24h.
Radiological features of infantile glioblastoma and desmoplastic infantile tumors: British Columbia’s Children’s Hospital experience
Authors: Bader Ahmad , Heran Manraj , Dunham Christopher , Steinbok Paul 
Published: May 2015

OBJECT
Two of the more common infantile brain tumors, glioblastoma multiforme (GBM) and desmoplastic infantile tumors (DITs), can be difficult to distinguish on MRI. Both tumors occur in the supratentorial compartment and both have solid and cystic components. Differentiating between the 2 on MRI studies could assist the surgeon in discussions with family and child management. The authors report on their institutional experience with both tumors, focusing on radio-graphic features, especially the diffusion studies, which might be useful in distinguishing between infantile GBM and DIT.

METHODS
A retrospective review was undertaken of all infantile brain tumors treated at British Columbia’s Children’s Hospital between 1982 and 2012, and cases of GBM and DIT were recorded. Only cases that had imaging were included in the study. A literature review was completed to identify reported cases of infantile GBM and DIT. Only reports that described or included radiological studies (particularly MRI) of the tumors were included. Certain radiographic features of the tumors were reviewed, including location, size, consistency, pattern of enhancement, and features on MR diffusion studies.

RESULTS
Of 70 cases of infantile brain tumors, 2 GBM cases and 3 DIT cases (all 3 of which were desmoplastic infantile gangliogliomas [DIGs]) met the inclusion criteria. The radiological studies obtained in all 5 cases were reviewed by a neuroradiologist. All 5 patients had supratentorial tumors with cystic-solid consistency. Diffusion MRI studies showed restricted diffusion in the 2 GBM cases, but no evidence of restricted diffusion in the DIG tumors. The GBM tumors were heterogeneously enhancing, and the DIG tumors showed avid and homogeneous enhancement. The literature review revealed 29 cases of infantile GBM and 32 cases of DIG/DIT that met the inclusion criteria. The tumors were large in both groups. The tumors were cystic-solid in consistency in 10 of 30 (33%) of GBM cases and 28 of 32 (87.5%) of DIT cases. The contrast enhancement was heterogeneous in 9 of 30 (30%) GBM cases, and it was homogeneous and avid in 27 of 32 (84%) of DIT cases. Diffusion studies were recorded in 2 published infantile GBM cases, and in both of them diffusion was restricted. The authors only found 1 report that discussed DIG tumor features on MR diffusion studies, but the interpretation was difficult and unclear.

CONCLUSIONS
Magnetic resonance imaging, especially diffusion-weighted imaging, may be a useful aid in distinguishing between infantile GBM and DIT tumors, with infantile GBM demonstrating restricted diffusion.
Gamma Knife radiosurgery for facial nerve schwannomas: a multicenter study
Authors: Sheehan Jason P. , Kano Hideyuki , Xu Zhiyuan , Chiang Veronica , Mathieu David , Chao Samuel , Akpinar Berkcan , Lee John Y.K. , Yu James B. , Hess Judith , Wu Hsiu-Mei , Chung Wen-Yuh , Pierce John , Missios Symeon , Kondziolka Douglas , Alonso-Basanta Michelle , Barnett Gene H. , Lunsford L. Dade 
Published: May 2015

OBJECT
Facial nerve schwannomas (FNSs) are rare intracranial tumors, and the optimal management of these tumors remains unclear. Resection can be undertaken, but the tumor’s intimate association with the facial nerve makes resection with neurological preservation quite challenging. Stereotactic radiosurgery (SRS) has been used to treat FNSs, and this study evaluates the outcome of this approach.

METHODS
At 8 medical centers participating in the North American Gamma Knife Consortium (NAGKC), 42 patients undergoing SRS for an FNS were identified, and clinical and radiographic data were obtained for these cases. Males outnumbered females at a ratio of 1.2:1, and the patients’ median age was 48 years (range 11–76 years). Prior resection was performed in 36% of cases. The mean tumor volume was 1.8 cm3, and a mean margin dose of 12.5 Gy (range 11–15 Gy) was delivered to the tumor.

RESULTS
At a median follow-up of 28 months, tumor control was achieved in 36 (90%) of the 40 patients with reliable radiographic follow-up. Actuarial tumor control was 97%, 97%, 97%, and 90% at 1, 2, 3, and 5 years postradiosurgery. Preoperative facial nerve function was preserved in 38 of 42 patients, with 60% of evaluable patients having House-Brackmann scores of 1 or 2 at last follow-up. Treated patients with a House-Brackmann score of 1 to 3 were more likely to demonstrate this level of facial nerve function at last evaluation (OR 6.09, 95% CI 1.7–22.0, p = 0.006). Avoidance of temporary or permanent neurological symptoms was more likely to be achieved in patients who received a tumor margin dose of 12.5 Gy or less (log-rank test, p = 0.024) delivered to a tumor of ≤ 1 cm3 in volume (log-rank test, p = 0.01).

CONCLUSIONS
Stereotactic radiosurgery resulted in tumor control and neurological preservation in most FNS patients. When the tumor is smaller and the patient exhibits favorable normal facial nerve function, SRS portends a better result. The authors believe that early, upfront SRS may be the treatment of choice for small FNSs, but it is an effective salvage treatment for residual/recurrent tumor that remain or progress after resection.
Vascularized rotational temporal bone flap for repair of anterior skull base defects: a novel operative technique
Authors: Zeiler Frederick A. , Kaufmann Anthony M. 
Published: May 2015

Repair of anterior skull base defects with vascularized grafts poses a significant challenge, given the location and small number of adequately sized vessels for free-flap anastomosis. This is particularly the case in the setting of redo surgery or in patients with preexisting soft-tissue trauma. Even more difficult is achieving a vascularized bone flap closure of such bony defects. The authors report a novel technique involving a rotational temporal bone flap with a temporalis muscle vascularized pedicle, which was used to repair an anterior fossa bony and soft-tissue defect created by recurrent malignancy.
A 55-year-old man with history of scalp avulsion during a motor vehicle accident, anterior fossa/nasopharyngeal malignant neuroendocrine carcinoma postresection, and bone flap infection presented with a recurrence of his skull base malignancy. The tumor was located in the anterior fossa, extending interhemispherically and down through the cribriform plate, ethmoid air cells, and extending into the nasopharyngeal cavity. Resection of the recurrent tumor was performed. The bony defect in the anterior skull base was repaired with a novel vascularized rotational temporal bone flap, with acceptable separation of the nasopharynx from the intracranial cavity.
The vascularized rotational temporal bone flap, in which a temporalis muscle pedicle is used, provides a novel and easily accessible means of vascularized bone closure of anterior skull base defects without the need for microsurgical free-flap grafting.
Comparison of structural allograft and traditional autograft technique in occipitocervical fusion: radiological and clinical outcomes from a single institution
Authors: Godzik Jakub , Ravindra Vijay M. , Ray Wilson Z. , Schmidt Meic H. , Bisson Erica F. , Dailey Andrew T. 
Published: May 2015

OBJECT
The authors’ objectives were to compare the rate of fusion after occipitoatlantoaxial arthrodesis using structural allograft with the fusion rate from using autograft, to evaluate correction of radiographic parameters, and to describe symptom relief with each graft technique.

METHODS
The authors assessed radiological fusion at 6 and 12 months after surgery and obtained radiographic measurements of C1–2 and C2–7 lordotic angles, C2–7 sagittal vertical alignments, and posterior occipitocervical angles at preoperative, postoperative, and final follow-up examinations. Demographic data, intraoperative details, adverse events, and functional outcomes were collected from hospitalization records. Radiological fusion was defined as the presence of bone trabeculation and no movement between the graft and the occiput or C-2 on routine flexion-extension cervical radiographs. Radiographic measurements were obtained from lateral standing radiographs with patients in the neutral position.

RESULTS
At the University of Utah, 28 adult patients underwent occipitoatlantoaxial arthrodesis between 2003 and 2010 using bicortical allograft, and 11 patients were treated using iliac crest autograft. Mean follow-up for all patients was 20 months (range 1–108 months). Of the 27 patients with a minimum of 12 months of follow-up, 18 (95%) of 19 in the allograft group and 8 (100%) of 8 in the autograft group demonstrated evidence of bony fusion shown by imaging. Patients in both groups demonstrated minimal deterioration of sagittal vertical alignment at final follow-up. Operative times were comparable, but patients undergoing occipitocervical fusion with autograft demonstrated greater blood loss (316 ml vs 195 ml). One (9%) of 11 patients suffered a significant complication related to autograft harvesting.

CONCLUSIONS
The use of allograft in occipitocervical fusion allows a high rate of successful arthrodesis yet avoids the potentially significant morbidity and pain associated with autograft harvesting. The safety and effectiveness profile is comparable with previously published rates for posterior C1–2 fusion using allograft.
Expectant management for men with early stage prostate cancer
Authors: Filson Christopher P. , Marks Leonard S. , Litwin Mark S. 
Published: May 2015

Answer questions and earn CME/CNESince the dissemination of prostate‐specific antigen screening, most men with prostate cancer are now diagnosed with localized, low‐risk prostate cancer that is unlikely to be lethal. Nevertheless, nearly all of these men undergo primary treatment with surgery or radiation, placing them at risk for longstanding side effects, including erectile dysfunction and impaired urinary function. Active surveillance and other observational strategies (ie, expectant management) have produced excellent long‐term disease‐specific survival and minimal morbidity for men with prostate cancer. Despite this, expectant management remains underused for men with localized prostate cancer. In this review, various approaches to the expectant management of men with prostate cancer are summarized, including watchful waiting and active surveillance strategies. Contemporary cancer‐specific and health care quality‐of‐life outcomes are described for each of these approaches. Finally, contemporary patterns of use, potential disparities in care, and ongoing research and controversies surrounding expectant management of men with localized prostate cancer are discussed. CA Cancer J Clin 2015;65:264–282. © 2015 American Cancer Society.
A new record of Potamanthellus caenoides Ulmer 1939 (Ephemeroptera: Neoephemereidae) from the southern Western Ghats of India
Authors: Selvakumar C. , Sivaramakrishnan K.G. , Janarthanan S. 
Published: May 2015

As part of ongoing exploration of the mayflies of hill streams of the southern Western Ghats of India, we establish a new record of mayfly.
Potamanthellus caenoides Ulmer 1939 is newly recorded based on larval collection from the upstream of Silent Valley National Park of the southern Western Ghats. Brief ecological notes are appended.
« Les femmes sont nées pour souffrir » en contexte d’excision : un héritage d’humiliation et de honte à élaborer
Authors: Atani Torasso Louise 
Published: May 2015

Entre mère et fille se pose en psychanalyse la question du féminin. Qu’en est-il dans la construction subjective des filles excisées ? Cette question les confronterait à une violence inédite dans le lien générationnel et groupal, au risque d’une position mortifère. Cet article interroge la croyance que « les femmes sont nées pour souffrir », très répandue en contexte d’excision. Modalité de la parole éducative, à côté des berceuses, devinettes, contes et mythes, elle est transmise entre mères et filles. L’objectif est d’analyser, dans une approche clinique, les effets « porte-la-honte » de l’excision et les conditions de son élaboration, à partir du récit de deux femmes et de notre expérience d’accompagnement de femmes excisées.