bluuebunny/crossref_metadata_2025_split huggingface dataset:
Imaging in endometrial carcinoma
Authors: Faria Silvana C , Sagebiel Tara , Balachandran Aparna , Devine Catherine , Lal Chandana , Bhosale Priya R 
Published: April 2015

AbstractEndometrial carcinoma (EC) is the most common gynecologic malignancy in the United States. Prognosis depends on patient age, histological grade, depth of myometrial invasion and/or cervical invasion, and the presence of lymph node metastases. Although EC is staged surgically according to the International Federation of Gynecology and Obstetrics (FIGO) system, preoperative imaging can assist in optimal treatment planning. Several imaging techniques such as transvaginal ultrasonography (TVUS), computed tomography (CT), and magnetic resonance imaging (MRI) have been used as diagnostic tools for preoperative staging of EC. Recently, positron emission tomography (PET), PET/CT, and PET/MRI have also been used in staging these patients. In this article, we review the value of imaging in diagnosis, staging, treatment planning, and detection of recurrent disease in patients with EC.
Role of dynamic CT perfusion study in evaluating various intracranial space-occupying lesions
Authors: Kamble Ravindra B , Jayakumar Peruvumba N , Shivashankar Ravishankar 
Published: April 2015

Abstract
Aims: Differentiating intracranial mass lesions on CT scan is challenging. The purpose of our study was to determine the perfusion parameters in various intracranial space-occupying lesions (ICSOL), differentiate benign and malignant lesions, and differentiate between grades of gliomas. Materials and Methods: We performed CT perfusion (CTP) in 64 patients, with age ranging from 17 to 68 years, having space-occupying lesions in brain and calculated relative cerebral blood flow (rCBF) and relative cerebral blood volume (rCBV). Results: We found significantly lower perfusion in low-grade gliomas as compared to high-grade tumors, lymphoma, and metastases. Similarly in infective lesions, TWT and abscesses showed significantly lower perfusion compared to TOT. In ring enhancing lesions, capsule of TWT showed significantly lower perfusion as compared to abscesses, TOT, and metastases. Conclusion: Thus, in conclusion, infective lesions can be differentiated from tumors like lymphomas, high-grade gliomas, or metastases based on perfusion parameters. The cut off value of rCBV 1.64 can be used to differentiate between low grade and high grade gliomas. However, depending only on perfusion parameters, differentiation between the tumors like lymphomas, high-grade gliomas, and metastases may not be possible.
Morphometric analysis of diameter and relationship of vertebral artery with respect to transverse foramen in Indian population
Authors: Sureka Binit , Mittal Mahesh Kumar , Mittal Aliza , Agarwal Mukul Sinha Kanhaiya , Bhambri Narendra Kumar , Thukral Brij Bhushan 
Published: April 2015

Abstract
Purpose: To study the location, origin, size and relationship of the vertebral artery and the transverse foramina in the lower cervical spine by computed tomographic angiography (CTA) measurements in the Indian population. Materials and Methods: A retrospective review of multi-detector CT (MDCT) cerebral angiography scans was done between June 2011 and February 2014. A total of 120 patients were evaluated. The diameter of the vertebral artery (AL) and the shortest distance between the vertebral artery and the medial (M), lateral (L), anterior (A), and posterior (P) borders of transverse foramen were studied. In addition, the shortest distance between the vertebral artery and pedicle (h) was also analyzed. Statistical Analysis: The means and their standard deviations (SD) were calculated in both the sexes. The t-tests were performed to look for significant sexual difference. Results: The largest vertebral artery diameter (AL) was at level C7 on the right side (3.5 ± 0.8) and at the level of C5 on the left side (3.7 ± 0.4). Statistically significant difference between males and females were seen at levels C4, C5, and C7. The diameter of the vertebral artery was smaller in females than males. The L value was greater than other parameters (M, A, P) at the same level in all the measurements. The h value was greatest at C6 level and shortest at C5. Conclusion: CTA is necessary before pedicle screw fixation due to variation in measurements at all levels. The highest potential risk of vertebral artery injury during cervical pedicle screw implantation may be at C5, then at C4, and the safest is at C7.
Real-time ultrasound: Key factor in identifying celiac artery compression syndrome
Authors: Tembey Raina Anil , Bajaj Aneeta S , Wagle Prasad k , Ansari Abdul Samad 
Published: April 2015

AbstractThe median arcuate ligament syndrome (MALS) or celiac artery compression syndrome (CACS) is a rare entity, presenting clinically with postprandial abdominal pain and weight loss. The diagnosis is made on computed tomography (CT) angiography, which reveals extrinsic compression of the proximal part of the celiac artery by the median arcuate ligament, producing a characteristic hooked appearance. We report a case of the celiac artery compression syndrome, diagnosed by Doppler USG evaluation.
Deberes escolares y rendimiento académico en Educación Primaria
Authors: Valle Antonio , Pan Irene , Núñez José C. , Rosário Pedro , Rodríguez Susana , Regueiro Bibiana 
Published: April 2015

This paper analyzes the relationship between homework behavior and academic achievement using a sample of students from the last three years of primary education. The variables associated with student involvement in homework were the <em>amount of homework completed</em>, <em>the time spent on</em><em> homework,</em> and <em>homework time optimization</em>, while <em>academic achievement</em> was estimated based on the grades in mathematics and foreign language (english). The possible effect of the course and gender when calculating the level of predictive variables concerning the homework on academic achievement was analyzed. The results indicated that the amount of homework done and the optimization of the time dedicated at homework significantly and positively predicted academic performance in both subjects. However, the amount of time spent on homework was not relevant. Finally, while gender was not statistically significant in predicting academic achievement, the course itself was statistically significant: as the course advances the mathematics achievement tends to diminish.
Spanish Adaptation of the Working Alliance Inventory (WAI). Psychometric properties of the patient and therapist forms (WAI-P and WAI-T)
Authors: Andrade-González Nelson , Fernández-Liria Alberto 
Published: April 2015

The working alliance is one of the most widely studied constructs in psychotherapy process research. The purpose of our study was to adapt the patient and therapist forms of the Working Alliance Inventory (WAI-P and WAI-T) into Spanish. Both measurement instruments were translated into Spanish through a systematic translation process. The psychometric properties of the instruments were evaluated in both a pilot study and a clinical study involving Spanish outpatients with depressive disorders and their therapists. In the clinical study, patients completed the Spanish-language Beck Depression Inventory (BDI) prior to initiating therapy and after the third and tenth psychotherapy sessions. High average scores were obtained with the Spanish-language WAI-P and WAI-T. A large number of individual items correlated satisfactorily with the overall score for the corresponding subscale. Both measures demonstrated excellent reliability (internal consistency) and convergent validity. There were some limitations in the discriminant validity of the measures vs. measures of empathy. Regarding predictive validity, the overall WAI-P and the Task subscale of the WAI-T separately explained a moderate percentage of the variance in patient change in the BDI after the tenth psychotherapy session. These results were satisfactory and consistent with those obtained in studies using the English-language WAI.
La stratégie et la réponse de l’État byzantin aux risques d’invasions barbares (VIIIe-IXe siècles)
Authors: Tremblay Vincent 
Published: April 2015

La période iconoclaste byzantine est considérée à tort comme une période de recul politique et intellectuel. En effet, du XVIIIe siècle jusqu’à aujourd’hui, les historiens ont fait perdurer le discours négatif des sources grecques dans l’historiographie, de sorte que notre conception de cette période n’a pratiquement pas changé depuis le IXe siècle : les empereurs iconoclastes Léon III (717-741) et Constantin V (741-775) sont principalement reconnus pour avoir instauré la doctrine iconoclaste et mené une campagne de destruction massive des images religieuses et de persécution de leurs défenseurs (majoritairement des moines). Cette lecture, suite aux derniers développements historiographiques, est complètement battue en brèche, et Léon III et Constantin V sont aujourd’hui accrédités comme d’excellents généraux et administrateurs. Cet article s’inscrit pleinement dans cette ligne directrice et propose de nuancer l’image des empereurs afin de faire ressortir leur rôle politique et militaire dans la restauration de l’Empire byzantin à la suite des invasions arabes au VIIe siècle.
Ionospheric vertical plasma drift perturbations due to the quasi 2 day wave
Authors: Gu Sheng‐Yang , Liu Han‐Li , Li Tao , Dou Xiankang 
Published: April 2015

AbstractThe thermosphere‐ionosphere‐mesosphere‐electrodynamics–general circulation model is utilized to study the vertical E × B drift perturbations due to the westward quasi 2 day wave with zonal wave numbers 2 and 3 (W2 and W3). The simulations show that both wind components contribute directly and significantly to the vertical drift, which is not merely confined to low latitudes. The vertical drifts at the equator induced by the total wind perturbations of W2 are comparable with that at middle latitudes, while the vertical drifts from W3 are much stronger at middle latitudes than at the equator. The ion drift perturbations induced by the zonal and meridional wind perturbations of W2 are nearly in‐phase with each other, whereas the phase discrepancies of the ion drift induced by the individual wind component of W3 are much larger. This is because the wind perturbations of W2 and W3 have different latitudinal structures and phases, which result in different ionospheric responses through wind dynamo.
The impact of opioid prescription dose and duration during a Workers Compensation claim, on post‐claim continued opioid use: A retrospective population‐based study
Authors: Shafer Leigh Anne , Raymond Colette , Ekuma Okechukwu , Kraut Allen 
Published: April 2015

BackgroundWorkers Compensation Board (WCB) recipients are a group commonly prescribed opioids.MethodsWe explored factors influencing post‐claim opioid dose and duration by linking data from 22,451 claims with the Manitoba Center for Population Health registry.ResultsOn average, the WCB paid for 94.55% of opioids prescribed during a claim. The amount paid for by the WCB varied significantly by total opioids prescribed. The main predictors of high opioid dosage (120 + morphine equivalents (ME)/day) during the first year post‐claim (logistic regression), and of longer post‐claim opioid usage (survival analysis), included opioid dosage during the final month of the claim both paid for and not paid for by the WCB.ConclusionsAmongst low dose opioid claims, the WCB covers most opioids prescribed. Higher opioid dose WCB recipients are often prescribed opioids not covered by the WCB. Both opioids paid for and not paid for by the WCB are associated with post‐claim opioid use. Am. J. Ind. Med. 58:650–657, 2015. © 2015 Wiley Periodicals, Inc.
Vom Labortisch zur Feldforschung: zwei Fallstudien kostengünstiger Diagnostik
Authors: Kumar Ashok A. , Hennek Jonathan W. , Smith Barbara S. , Kumar Shailendra , Beattie Patrick , Jain Sidhartha , Rolland Jason P. , Stossel Thomas P. , Chunda‐Liyoka Catherine , Whitesides George M. 
Published: April 2015

AbstractDie universitäre Forschung an Point‐of‐Care‐Diagnostik für die globale Gesundheit verzeichnet ein stetes Wachstum, allerdings verlassen viele Testsysteme niemals das Labor. Prozesse, die die diagnostische Technologie vom Labor ins Feld überführen – Prozesse, mit deren Hilfe Betrieb und Leistungsvermögen unter realistischen Bedingungen evaluiert werden sollen –, sind komplizierter, als sie scheinen mögen. Zwei Fallstudien illustrieren diesen Prozess: die Entwicklung eines papierbasierten Testsystems zur Messung der Leberfunktion sowie die eines Testsystems zur Identifikation von Sichelzellanämie, das auf wässrigen, mehrphasigen Systemen sowie Unterschieden in der Dichte normaler und sichelförmiger Zellen beruht. Aus den Details der Entwicklung dieser beiden Testsysteme lassen sich allgemeingültige Strategien zum Aufbau von Kooperationen, zum Herstellen von Prototypen, zur Validierung, zum Design von Studien und zur Evaluation von Point‐of‐Care‐Diagnostik ableiten. Die aus diesen Erfahrungen gezogenen (verfahrens)technischen Lehren können Wissenschaftlern nutzen, die diagnostische Tests für Entwicklungsländer und – allgemeiner – Technologien für den Einsatz bei begrenzten Ressourcen entwerfen.
Hochdrucksynthese von Cd(NH3)2[B3O5(NH3)]2: ein grundlegender Weg in die Substanzklasse der Amminborate
Authors: Sohr Gerhard , Ciaghi Nina , Schauperl Michael , Wurst Klaus , Liedl Klaus R. , Huppertz Hubert 
Published: April 2015

AbstractBisher war der Zugang zur Substanzklasse der stickstoffhaltigen Borate, z. B. zu Nitridoboraten, Oxonitridoboraten oder Aminboraten, wegen der anspruchsvollen Ausgangsstoffe und Reaktionsbedingungen äußerst aufwendig. Obwohl eine Vielzahl von Verbindungen bekannt ist, die gleichzeitig Bor und Stickstoff enthalten, ist bisher kein Addukt von Ammoniak mit einem anorganischen Borat beobachtet worden. Ein neuer Syntheseweg ausgehend von den einfachen Ausgangsverbindungen CdO, B2O3 und wässrigem Ammoniak bei 4.7 GPa und 800 °C führte nun zur Synthese von Cd(NH3)2[B3O5(NH3)]2 als dem ersten Amminborat. Die Verbindung wurde durch Tieftemperatur‐Einkristall‐ und Pulver‐Röntgenbeugungsdaten, IR‐ und Raman‐Spektroskopie sowie durch quantenmechanische Rechnungen umfassend charakterisiert. Diese Arbeit zeigt, dass das Addukt von NH3 mit der BO3‐Gruppe eines komplexen B‐O‐Netzwerks stabilisiert werden kann, und eröffnet somit einen grundlegend neuen Weg zur Synthese stickstoffhaltiger Borate.
Crystalline Hetero‐Stereocomplexed Polycarbonates Produced from Amorphous Opposite Enantiomers Having Different Chemical Structures
Authors: Liu Ye , Wang Meng , Ren Wei‐Min , Xu Yue‐Chao , Lu Xiao‐Bing 
Published: April 2015

AbstractStereocomplexation is the stereoselective interaction between two opposite enantiomeric polymers through an interlocked orderly assembly. Most studies focus on the stereocomplex formation from the crystalline opposite enantiomers having the identical structure; nevertheless, rare examples were reported regarding the crystalline stereocomplexes from enantiomeric polymers having different chemical structures. Herein we show a strategy for polymer orderly assembly through the formation of crystalline hetero‐stereocomplexed polymeric materials by the cocrystallization of amorphous isotactic polycarbonates with different chemical structures and opposite configurations. The behaviors in the crystalline state are significantly different from that of the component enantiomeric polymers or their homo‐stereocomplexes. This study is expected to open up a new way to prepare various semicrystalline materials having a wide variety of physical properties and degradability.
Novel Mechanism of Bioluminescence: Oxidative Decarboxylation of a Moiety Adjacent to the Light Emitter of Fridericia Luciferin
Authors: Dubinnyi Maxim A. , Kaskova Zinaida M. , Rodionova Natalja S. , Baranov Mikhail S. , Gorokhovatsky Andrey Yu. , Kotlobay Alexey , Solntsev Kyril M. , Tsarkova Aleksandra S. , Petushkov Valentin N. , Yampolsky Ilia V. 
Published: April 2015

AbstractA novel luciferin from a bioluminescent Siberian earthworm Fridericia heliota was recently described. In this study, the Fridericia oxyluciferin was isolated and its structure elucidated. The results provide insight into a novel bioluminescence mechanism in nature. Oxidative decarboxylation of a lysine fragment of the luciferin supplies energy for light generation, while a fluorescent CompX moiety remains intact and serves as the light emitter.
Potentialabhängige Struktur und Dynamik molekularer Adschichten an der Grenzfläche zwischen ionischen Flüssigkeiten und Au(111): Eine In‐situ‐Video‐STM‐Studie
Authors: Wen Rui , Rahn Björn , Magnussen Olaf M. 
Published: April 2015

AbstractIonische Flüssigkeiten sind für elektrochemische Anwendungen in den Materialwissenschaften und der Energiespeicherung aktuell von großem Interesse. Zum Verständnis der elektrochemischen Reaktivität dieser Systeme bedarf es detaillierter Daten zur Struktur und Dynamik der Grenzflächen dieser Substanzen zu Metallelektroden, die sich merklich von denen in konventionellen Elektrolyten unterscheiden. Wir beschreiben hier Untersuchungen mittels In‐situ‐Hochgeschwindigkeitsrastertunnelmikroskopie (Video‐STM) von Au(111)‐Elektroden in der ionischen Flüssigkeit 1‐Butyl‐1‐methylpyrrolidinium‐bis(trifluormethylsulfonyl)imid ([BMP][TFSA]). [BMP][TFSA] ist eine der am besten verstandenen ionischen Flüssigkeiten mit hoher Stabilität gegenüber Luft und Wasser. Die Messungen liefern direkte Einblicke in die potentialabhängige molekulare Anordnung und das dynamische Verhalten von adsorbierten [BMP]+‐Kationen der innersten Schicht an der negativ geladenen Au‐Elektrodenoberfläche. Insbesondere werden dabei mit abnehmendem Potential zwei aufeinanderfolgende Übergänge in der Adschichtstrukur und lateralen Mobilität beobachtet.
An Inverted‐Sandwich Diuranium μ‐η5:η5‐Cyclo‐P5 Complex Supported by U‐P5 δ‐Bonding
Authors: Gardner Benedict M. , Tuna Floriana , McInnes Eric J. L. , McMaster Jonathan , Lewis William , Blake Alexander J. , Liddle Stephen T. 
Published: April 2015

AbstractReaction of [U(TrenTIPS)] [1, TrenTIPS=N(CH2CH2NSiiPr3)3] with 0.25 equivalents of P4 reproducibly affords the unprecedented actinide inverted sandwich cyclo‐P5 complex [{U(TrenTIPS)}2(μ‐η5:η5‐cyclo‐P5)] (2). All prior examples of cyclo‐P5 are stabilized by d‐block metals, so 2 shows that cyclo‐P5 does not require d‐block ions to be prepared. Although cyclo‐P5 is isolobal to cyclopentadienyl, which usually bonds to metals via σ‐ and π‐interactions with minimal δ‐bonding, theoretical calculations suggest the principal bonding in the U(P5)U unit is polarized δ‐bonding. Surprisingly, the characterization data are overall consistent with charge transfer from uranium to the cyclo‐P5 unit to give a cyclo‐P5 charge state that approximates to a dianionic formulation. This is ascribed to the larger size and superior acceptor character of cyclo‐P5 compared to cyclopentadienyl, the strongly reducing nature of uranium(III), and the availability of uranium δ‐symmetry 5f orbitals.
Direct Imaging of Octahedral Distortion in a Complex Molybdenum Vanadium Mixed Oxide
Authors: Lunkenbein Thomas , Girgsdies Frank , Wernbacher Anna , Noack Johannes , Auffermann Gudrun , Yasuhara Akira , Klein‐Hoffmann Achim , Ueda Wataru , Eichelbaum Maik , Trunschke Annette , Schlögl Robert , Willinger Marc G. 
Published: April 2015

AbstractComplex Mo,V‐based mixed oxides that crystallize in the orthorhombic M1‐type structure are promising candidates for the selective oxidation of small alkanes. The oxygen sublattice of such a complex oxide has been studied by annular bright field scanning transmission electron microscopy. The recorded micrographs directly display the local distortion in the metal oxygen octahedra. From the degree of distortion we are able to draw conclusions on the distribution of oxidation states in the cation columns at different sites. The results are supported by X‐ray diffraction and electron paramagnetic resonance measurements that provide integral details about the crystal structure and spin coupling, respectively.
Sustainability lessons from practice: how flow intensification can trigger sustainability and modular plant technology in EU projects
Authors: Sundaram Smitha , Kralisch Dana , Wang Qi , Hessel Volker 
Published: April 2015

AbstractLife cycle assessment (LCA) and life cycle cost analysis are two prime tools that have been used to evaluate the sustainability of novel EU projects, which investigated new strategies to improve product yields and reduce costs, while ensuring a good ecological footprint and cost efficiency. These include EU projects focussed on developing modular, compact production platforms with intensified reactors–such as the F3 Factory, COPIRIDE (combining process intensification‐driven manufacture of microstructured reactors and process design regarding to industrial dimensions and environment), POLYCAT (modern polymer‐based catalysts and microflow conditions as key elements of innovations in fine chemical synthesis) and SYNFLOW (Innovative Synthesis in Continuous‐flow Processes for Sustainable Chemical Production). New projects such as the MAPSYN (Microwave, Acoustic and Plasma assisted SYNtheses) and BIOGO (Catalytic Partial Oxidation of Bio Gas and Reforming of Pyrolysis Oil (Bio Oil) for an Autothermal Synthesis Gas Production and Conversion into Fuels) continue this, but by using alternative energy and a biomass‐based, heat‐integrated process, respectively. Thus, this paper is a review of EU projects that have carried out LCA and cost analyses and used the results to aid decision‐making in the context of process intensification, flow chemistry and modular plants. Copyright © 2015 Curtin University of Technology and John Wiley & Sons, Ltd.
Mechanical and rheological properties of polypropylene/bentonite composites with stearic acid as an interface modifier
Authors: Del Angel Cesar , Morales Ana B. , Navarro‐Pardo Fabiola , Lozano Tomas , Lafleur Pierre G , Sanchez‐Valdes Saul , Martinez‐Colunga Guillermo , Ramirez‐Vargas Eduardo , Alonso Sergio , Zitzumbo Roberto 
Published: April 2015

ABSTRACTIn this study, we present a study of polypropylene/bentonite composites where stearic acid was used as both a surface and interface modifier during the compounding of composites. The concentration of bentonite was 1.5, 2.5, 5.0, and 10 parts per hundred. The composites were characterized by impact resistance and tensile tests, rheological analysis, the dispersion state of the filler observed by optical microscopy, and interaction between bentonite and stearic acid, as analyzed by Fourier transform infrared spectroscopy. No chemical interaction was found between bentonite and stearic acid. Composites with modified bentonite and stearic acid used as interface modifiers increased the elongation at break; these samples also showed better dispersion of the filler in comparison with the other compounds. In addition, stearic acid acted as a lubricant, favoring the interaction of the polymer with the filler and decreasing the viscosity of the compounds. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42264.