bluuebunny/crossref_metadata_2025_split huggingface dataset:
Crescent sign on magnetic resonance angiography revealing incomplete stent apposition: correlation with diffusion-weighted changes in stent-mediated coil embolization of aneurysms
Authors: Heller Robert S. , Miele William R. , Do-Dai Daniel D. , Malek Adel M. 
Published: May 2011

Object
Few data are available on how closely stents appose the luminal vessel wall in stent-mediated coil embolization of intracranial aneurysms and on the effect of incomplete stent apposition on procedural thromboembolic complications.

Methods
Postprocedural 3-T MR diffusion-weighted imaging and time-of-flight angiography were obtained in 58 patients undergoing stent-mediated coil embolization of aneurysms using the Enterprise closed-cell and Neuroform open-cell self-expanding intracranial microstents.

Results
A distinctive semilunar signal pattern, identified using 3-T MR angiography, represented flow outside the confines of the stent struts in patients in whom Enterprise but not Neuroform devices were used. This pattern, designated as the crescent sign, was confirmed to correspond to incomplete stent apposition by use of high-resolution angiographic flat-panel CT scanning revealing flow ingress into and egress out of the isolated luminal wedge. The presence of the crescent sign was seen in 18 of 33 Enterprise-treated but in 0 of 25 Neuroform-treated cases, and was more likely in stents delivered in the tortuous internal carotid artery (p = 0.034). The crescent sign was strongly predictive of ipsilateral postprocedural lesions seen on diffusion-weighted imaging in the entire population (OR 18, 95% CI 4.33–74.8; p < 0.0001). In the Enterprise stent subset, ipsilateral lesions were detected on diffusion-weighted imaging in 15 (45%) of 33 cases; the crescent sign was seen in 12 (80%) of 15 patients with ipsilateral lesions on diffusion-weighted imaging, but in only 6 of 18 patients without lesions (OR 8, 95% CI 1.61–39.6; p = 0.006).

Conclusions
Incomplete stent apposition is detectable on 3-T MR angiography as a crescent sign, and was found to be highly prevalent in Enterprise closed-cell design stents used to assist coil embolization of aneurysms. Incomplete stent apposition was also associated with periprocedural ipsilateral hyperintense lesions on diffusion-weighted imaging. These results identify an association between incomplete stent apposition and thromboembolic complications in stent-mediated coil embolization of intracranial aneurysms.
Antihypertensive and Metabolic Effects of Telmisartan in Hypertensive HIV-Positive Patients
Authors: Vecchiet Jacopo , Ucciferri Claudio , Falasca Katia , Mancino Paola , Iorio Angelo Di , De Caterina Raffaele 
Published: May 2011

Background Hypertension is more prevalent among HIV-infected individuals than in the general population and contributes to increased cardiovascular risk. The angiotensin II receptor blocker telmisartan is also a partial peroxisome proliferator activated receptor-γ agonist with documented effects on glucose and lipid homeostasis. The aim of this study was to evaluate the antihypertensive and metabolic effects of telmisartan in hypertensive HIV-positive patients. Methods A total of 18 HIV-positive men treated with antiretroviral therapy and recently diagnosed with hypertension were administered 80 mg telmisartan daily. Systolic blood pressure (SBP) and diastolic blood pressure (DBP), viroimmunological and metabolic parameters, insulin resistance, C-reactive protein, microalbuminuria, cystatin C and plasma levels of interleukin-18 and endothelin-1 were measured at baseline (T0), 1 month (T1), 3 months (T3) and 6 months (T6). Results Treatment with telmisartan not only decreased SBP and DBP levels, but also improved insulin resistance and microalbuminuria by T1. Levels of triglycerides significantly decreased and high-density lipoprotein cholesterol increased at T1, whereas total and low-density lipoprotein cholesterol levels were statistically reduced at T3 and T6. Cystatin C and endothelin-1 showed a significant reduction at T1, whereas interleukin-18 decreased at both T3 and T6. Conclusions Telmisartan was effective in reducing blood pressure and improving lipid metabolism and renal function. Reduction of endothelin-1 might be related to an endothelial protective effect. On the basis of these findings, and because of properties unrelated to blood pressure lowering, telmisartan might be the first choice antihypertensive drug for the treatment of HIV-positive patients.
Les évolutions du droit français face aux violences conjugales
Authors: Couturier Mathias 
Published: May 2011

Résumé Jusqu’à la fin du xx e siècle, la conception patriarcale de la famille que le système juridique français faisait prévaloir maintenait l’épouse dans une situation de soumission. Face aux violences conjugales, l’autorité publique réagissait peu, voire pas du tout, l’important étant de préserver l’ordre social incarné par une institution familiale traditionnelle pérenne. À partir des années 1970, l’avènement d’une conception personnaliste de la société a amené le droit à modifier son intervention. La protection s’est déplacée de l’institution familiale vers les personnes composant le couple (marié, pacsé, en union libre, homosexuel). La répression s’est durcie et les moyens juridiques de prévention se sont multipliés. La police des mœurs a laissé la place à une police des personnes . Celle-ci n’est désormais pas loin d’une police des corps qui questionne l’auteur : jusqu’où l’État peut-il intervenir dans la vie intime du couple ?
Approche métapsychologique des adolescents et de leur famille en milieu rural
Authors: Haza Marion , Grolleau Émeline 
Published: May 2011

Résumé L’article présente une nouvelle approche métapsychologique de l’adolescence en milieu rural développée à partir d’une expérience clinique, celle du dispositif « Lieux-Dits » qui propose dans des communes isolées une prise en charge des jeunes et éventuellement des familles. La fragilisation des liens familiaux amplifiée par l’adolescence et la précarité sociale ne permet plus l’existence d’un espace interne contenant où se subjectiver. Quand les valeurs rurales ne tiennent pas, que l’identité personnelle est menacée par les valeurs familiales, l’adolescent se trouve pris dans un conflit de loyauté. Le passage à l’acte devient moyen de mobiliser la famille et de s’éloigner de l’appareil psychique familial. La création dans la coconstruction de nouveaux espaces, tels les « Lieux-Dits », prend ici tout son sens, comme substitut ou appui apporté au contenant familial.
Les voix, la voix
Authors: Porge Erik 
Published: May 2011

Résumé Nous étudions comment Lacan a isolé la voix comme objet a (avant le regard), en 1959, à partir de son analyse des hallucinations verbales. Comme l’exemplifient des formes d’automatisme verbal, où la sensorialité ne fait pas partie de l’hallucination, neutres, anidéiques, les voix se définissent plus par le rapport du sujet au langage que par l’imaginaire sensoriel. En interprétant les hallucinations de Schreber à l’aide de la topologie du graphe, Lacan est amené à positionner la voix avec celle-ci. Ensuite, après avoir inscrit la formule du fantasme ($<> a ) sur le graphe, il promeut la voix comme objet a , en référence aux voix, et insiste sur son essence plus temporelle que sonore. Nous avancerons que les particularités de la voix comme objet a nécessitent une modification du tracé de la pulsion invoquante par rapport aux autres pulsions et que la référence à celle-ci ouvre un accès possible au « se faire entendre » pour ceux qui entendent des voix.
Eyes wide shut
Authors: Longé Thierry 
Published: May 2011

Résumé Que la conception modifiée du rêve que Freud élabore dans son traité travaille à faire la lumière sur les psychoses, tel est l’un des enjeux expressément énoncé dans cet effort d’élucidation du secret du rêve. Qu’on ferme grand les yeux et on hallucine ; qu’on les ouvre, nous dit Freud, et on pense en mots.
La Voix de Sirène
Authors: Bentata Hervé 
Published: May 2011

Résumé Le trajet de l’élaboration lacanienne de l’objet a « voix » rencontre chemin faisant ce que Lacan désigne comme pulsion invocante. C’est à partir de ce point que le présent travail tente une analyse de la structure de l’ Odyssée tant dans la nature des épreuves qui se présentent au héros d’Homère que dans leur succession. C’est ainsi que l’épisode du chant des Sirènes est particulièrement pris en compte dans les différentes dimensions de la voix qui s’y déploient. J’essaierai d’interroger en quoi ces différents aspects de la voix correspondent à la pulsion qui, entre autres, pousse Ulysse dans son périple. Au-delà du pouvoir de capture irrésistible sur autrui de la voix des Sirènes, l’objet a « voix » se trouve interrogé dans la clinique de l’autisme, ne serait-ce qu’à voir comment les enfants autistes se détournent de la présence d’autrui, et notamment de la voix humaine.
La différence des sexes : quelle différence ?
Authors: Hatzfeld Marjolaine 
Published: May 2011

Résumé Après un quart de siècle de mise en jachère, Lacan, dans son séminaire La relation d’objet (1956-1957), se réaffronte aux paradoxes de la phase phallique telle que décrite et théorisée par Freud, spécialement dans son versant féminin : le Penisneid. Cet article reprend les données freudiennes de la question, jusque dans leurs conséquences sur la fin de l’analyse, et en retrace les impasses. Il indique comment, fidèle à la découverte freudienne, Lacan en élabore une nouvelle intelligibilité – par l’introduction de ces trois registres de l’imaginaire, du réel et du symbolique, qui permettra de préciser les différentes modalités du manque phallique qui a à être subjectivé. De là, une nouvelle façon d’appréhender la notion d’ objet en psychanalyse. Ces derniers points devraient être développés plus amplement dans un prochain article.
Le chaînon manquant
Authors: Magnard Pierre 
Published: May 2011

Résumé Passer directement de Nicolas de Cues à Leibniz, comme le fait Ernst Cassirer, introduit de l’un à l’autre une filiation abusive, génératrice de malentendus. Avec l’œuvre capitale de Charles de Bovelles, nous voulons restituer le chaînon manquant à une histoire des idées défigurée par de telles simplifications. L’œuvre du chanoine picard, laboratoire de concepts et d’opérateurs nouveaux, constitue l’indispensable transition d’un mentalisme sans « je » aux philosophies du sujet.
Infini mathématique et infini métaphysique : d'un bon usage de Leibniz pour lire Cues (... et d'autres)
Authors: Rabouin David 
Published: May 2011

Résumé Il est courant d’inscrire Leibniz dans une lignée qui, passant par Nicolas de Cues et Giordano Bruno, aurait marqué le triomphe de l’infini actuel dans la pensée moderne, qu’elle soit scientifique ou métaphysique. Pourtant Leibniz n’acceptait nullement un tel infini en mathématiques et s’en est expliqué à diverses reprises de manière particulièrement claire. Dans cet article, je voudrais rappeler cette position élaborée dès le début du séjour parisien (Accessio ad Arithmeticam infinitorum, fin 1672) et montrer son effectivité dans l’élaboration du « fictionalisme » leibnizien en ce qui concerne les infiniment petits. Rappelant les différentes stratégies de comparaison entre les pensées de Leibniz et Nicolas de Cues, je voudrais indiquer la manière dont des textes récemment édités permettent aujourd’hui une meilleure appréciation de l’écart qui peut les séparer.
La puissance de l'infini et les paradoxes de la singularité. Infini et contraction chez Nicolas de Cues
Authors: Vengeon Frédéric 
Published: May 2011

Résumé Nicolas de Cues élabore au xv e siècle une métaphysique de la singularité à partir de l’infinité du Principe et de son expression dans le fini. Cependant ce processus de singularisation universel ne va pas sans soulever des difficultés. Comment la singularité de la créature peut-elle s’ouvrir à l’infini ? Comment les créatures singulières peuvent-elles former un monde commun et se rapporter à leur Principe sans perdre leur distinction ?
Moments of the Rank of Elliptic Curves
Authors: Miller Steven J. , Wong Siman 
Published: May 2011

Abstract Fix an elliptic curve E/Qand assume the Riemann Hypothesis for the L-function L(ED, s) for every quadratic twist ED of E by D ϵ Z. We combine Weil's explicit formula with techniques of Heath-Brown to derive an asymptotic upper bound for the weighted moments of the analytic rank of ED. We derive from this an upper bound for the density of low-lying zeros of L(ED, s) that is compatible with the randommatrixmodels of Katz and Sarnak. We also show that for any unbounded increasing function f on R, the analytic rank and (assuming in addition the Birch and Swinnerton-Dyer conjecture) the number of integral points of ED are less than f (D) for almost all D.
Casselman’s Basis of Iwahori Vectors and the Bruhat Order
Authors: Bump Daniel , Nakasuji Maki 
Published: May 2011

AbstractW. Casselman defined a basis fu of Iwahori fixed vectors of a spherical representation of a split semisimple p-adic group G over a nonarchimedean local field F by the condition that it be dual to the intertwining operators, indexed by elements u of the Weyl group W. On the other hand, there is a natural basis , and one seeks to find the transition matrices between the two bases. Thus, let and . Using the Iwahori–Hecke algebra we prove that if a combinatorial condition is satisfied, then , where z are the Langlands parameters for the representation and α runs through the set S(u, v) of positive coroots (the dual root systemof G) such that with rα the reflection corresponding to α. The condition is conjecturally always satisfied if G is simply-laced and the Kazhdan–Lusztig polynomial Pw0v,w0u = 1 with w0 the long Weyl group element. There is a similar formula for conjecturally satisfied if Pu,v = 1. This leads to various combinatorial conjectures.
ELECTRON BEAM MODIFICATION OF CHLORINATED POLYETHYLENE
Authors: Mandal K. , Mongal N. R. , Singha Nikhil K. 
Published: May 2011

AbstractModification of polymers by electron beam (EB) radiation is a potential method for the development of new polymers and composites. This investigation reports the modification of chlorinated polyethylene (CPE) using electron beam radiation. In this case, the modification was carried out by using different dose of EB radiation. Different sensitizers at different concentrations were used to minimize the dose of EB radiation for effective crosslinking of the polymer. The optimum level of the radiation dose and the sensitizer concentration was determined by studying the gel content, mechanical, and electrical properties of the modified CPE. The percentage of the loss of chlorine during electron beam modification was calculated by monitoring the chlorine content in the modified CPE. The modified polymers were characterized by using Fourier transform infrared, thermogravimetric analysis, and differential scanning calorimetry analysis. Electrical properties of the modified CPE were also studied.
CHARACTERIZING THE TIME DEPENDENCE OF FILLED EPDM
Authors: Koprowski-Theiss N. , Johlitz M. , Diebels S. 
Published: May 2011

Abstract
The mechanical properties of a carbon black filled rubber are investigated. The main focus lays on the theoretical modeling of the basic elasticity and the viscoelastic behavior. Therefore, uniaxial tension tests at different feedrates are performed. The occurring Mullins effect can be neglected due to adequate pretreatment of the specimens. Healing effects are also verified and investigated in the examined material. The constitutive model for the basic elasticity is based on the Yeoh model, while the theory of finite viscoelasticity with an intermediate configuration is used to describe the rate dependent behavior. The healing effects are constituted with large relaxation times and not with an additional structural parameter. As the material has a strong nonlinear behavior with respect to the deformation rate, nonlinearity in the relaxation time with respect to this behavior is introduced. The material parameters of the model are estimated using a stochastic identification algorithm.
UNRAVELING THE MYSTERY OF NATURAL RUBBER BIOSYNTHESIS. PART I: INVESTIGATION OF THE COMPOSITION AND GROWTH OF IN VITRO NATURAL RUBBER USING HIGH RESOLUTION SIZE EXCLUSION CHROMATOGRAPHY
Authors: Chiang Chengching K. , Xie Wenshuang , McMahan Colleen , Puskas Judit E. 
Published: May 2011

Abstract
Monitoring the growth of in vitro natural rubber was accomplished by high resolution size exclusion chromatography, SEC. Washed rubber particles isolated from H. brasiliensis latex, containing the rubber transferase enzyme, were used to catalyze the polymerization of synthetic isopentenyl pyrophosphate monomer in the presence of farnesyl pyrophosphate initiator. The high-resolution SEC was able to detect the formation of new rubber. Changes in the low molecular weight fraction were also detected. Gravimetric analysis revealed ∼30% mass gain after the in vitro synthesis. The overall gel content was found to be reduced, which further supported the formation of new rubber. This is the first report that utilizes high-resolution SEC to monitor the in vitro NR growth without the use of radiolabeling.
FACTORS INFLUENCING REINFORCEMENT OF NR AND EPDM RUBBERS WITH SHORT ARAMID FIBERS
Authors: Shirazi M. , Noordermeer J. W. M. 
Published: May 2011

Abstract
Among short fiber reinforced composites, those with rubbery matrices have gained great importance due to the advantages they have in processing and low cost, coupled with high strength. These composites combine the elastic behavior of rubbers with strength and stiffness of fibers. Aramid fibers have been chosen because of their significantly higher modulus and strength, compared to other commercial fibers. Compounds based on NR and EPDM are prepared. Short aramid fibers with different kinds of surface treatments, standard finish, and resorcinol formaldehyde latex (RFL)-coating result in different rubber–fiber interfaces. The reinforcing effect of these short aramid fibers is characterized by mechanical and viscoelastic experiments, and by studying the fracture surfaces with electron microscopy techniques. Related to the fiber coating and rubber curing system, sulfur- or peroxide-based, different reinforcement mechanisms are observed, where the combination of peroxide-cured EPDM with RFL-treated fibers is the only case showing clear signs of chemical adhesion. In all other combinations there are only indications of mechanical interactions of the fibers with the rubber matrices, due to bending/buckling of fibers, dog-bone shaped fiber ends, and surface roughness due to the RFL-coating.
Algorithmic Content Recommendations on a Video-Sharing Platform Used by Children
Authors: Radesky Jenny , Bridgewater Enrica , Black Shira , O’Neil August , Sun Yilin , Schaller Alexandria , Weeks Heidi M. , Campbell Scott W. 
Published: May 2024

ImportanceFree video-sharing platforms (VSPs) make up a high proportion of children’s daily screen use. Many VSPs make algorithmic recommendations, appearing as thumbnail images from the video, which content creators use to advertise their video content.ObjectiveTo explore how VSP thumbnails use attention-capture designs to encourage engagement with content and to test whether VSP algorithmic recommendations offer more problematic thumbnail features over time.Design, Setting, and ParticipantsIn this cross-sectional study conducted in January 2022, researchers mimicked the search behavior of children on a popular VSP by randomly clicking on recommended videos in order to test whether thumbnail designs changed over 20 sequential video engagements. A digital, footprint-free data collection setting was created by using a new computer and wireless internet router. Data were collected from YouTube via an internet browser not logged into a user account. Data analysis occurred from April to December 2022.ExposuresManual searches using 12 top-searched terms popular with school-aged children were conducted. Researchers captured the video thumbnails recommended at the end of each video and randomly clicked subsequent videos for 20 sequential engagements.Main Outcomes and MeasuresThumbnail content codes were developed through iterative review of screenshots by a multidisciplinary research team and applied by trained coders (reliability, κ &amp;gt;.70). The prevalence of problematic thumbnail content and change in prevalence over 20 engagements was calculated using the Cochran-Armitage trend test.ResultsA total of 2880 video thumbnails were analyzed and 6 features were coded, including visual loudness; drama and intrigue; lavish excess and wish fulfillment; creepy, bizarre, and disturbing; violence, peril, and pranks; and gender stereotypes. A high proportion contained problematic features including the creepy, bizarre, and disturbing feature (1283 thumbnails [44.6%]), violence, peril, and pranks feature (1170 thumbnails [40.6%]), and gender stereotypes feature (525 thumbnails [18.2%]). Other features included attention-capture designs such as the visual loudness feature (2278 thumbnails [79.1%]), drama and intrigue feature (2636 thumbnails [91.5%]) and lavish excess and wish fulfillment feature (1286 thumbnails [44.7%]). Contrary to the hypotheses, problematic feature prevalence did not increase over time, but the gender stereotypes feature increased with more engagement in the recommendations feed (P for trend &amp;lt; .001).Conclusions and RelevanceIn this study of video recommendations for search terms popular with children, thumbnails contained problematic and attention-capturing designs including violent, stereotyped, and frightening themes. Research is needed to understand how children respond to thumbnail designs and whether such designs influence the quality of content children consume.
“Stiff‐Elastic” Binary Synergistic Fibrous Tape with Thermal‐Triggered Shrinkable and Shape Recoverable Performances for Wound Closure
Authors: Dong Yuping , Zhang Xiaohua , Chen Yuxin , Yu Jianyong , Li Xiaoran , Ding Bin 
Published: May 2024

AbstractThe emerging mechanically active wound dressing has been perceived as one of the most effective strategies to accelerate wound closure in a non‐invasive manner. However, the development of wound dressing with body temperature‐stimulated shrinkage behavior and superior mechanical capability is still a severe challenge. Here, a thermal‐shrinkable, stretchable, and tough fibrous tape is developed via the construction of “stiff‐elastic” binary component, as well as manipulation of the fiber stretching and phase separation. The resultant polyurethane (PU)/polyvinyl butyral (PVB) fibrous membrane (FM) shows a rapid and considerable shrinkage of 70.0% after exposure at 37 °C for 12 h. The shrunk PU/PVB FMs exhibit excellent mechanical performance including high elongation of 364.4%, large toughness of 26.6 MJ m−3 and rapid thermal‐recoverable capability with 80.4% and 71.8% restoration of stress and dissipated energy respectively. The in vivo study in rat full‐thickness skin model with 2 cm‐diameter circular wounds demonstrates that the thermal‐shrinkable PU/PVB FMs can enhance wound contraction and healing. Furthermore, the ex vivo rabbit organ model indicates the possibility of thermal‐shrinkable PU/PVB FMs in defect contraction of diverse tissues. This work may offer a promising way in the development of body temperature‐triggered mechanically active fibrous dressings for defects repair.