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Relevant bibliographies by topics / Groupes discontinus

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Academic literature on the topic 'Groupes discontinus'

Author: Grafiati

Published: 4 June 2021

Last updated: 13 February 2022

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Journal articles on the topic "Groupes discontinus"

1

Saloff-Coste, L. "Opérateurs pseudo-différentiels sur certains groupes totalement discontinus." Studia Mathematica 83, no. 3 (1986): 205–28. http://dx.doi.org/10.4064/sm-83-3-205-228.

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TERADA, Toshiaki. "Fonctions hypergéométriques $F_{1}$ et fonctions automorphes II. Groupes discontinus arithmétiquement définis." Journal of the Mathematical Society of Japan 37, no. 2 (April 1985): 173–85. http://dx.doi.org/10.2969/jmsj/03720173.

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Baklouti, Ali, Souhail Bejar, and Khaireddine Dhahri. "Deforming discontinuous groups for Heisenberg motion groups." International Journal of Mathematics 30, no. 09 (August 2019): 1950045. http://dx.doi.org/10.1142/s0129167x19500459.

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We study in this paper the local rigidity proprieties of deformation parameters of the natural action of a discontinuous group [Formula: see text] acting on a homogeneous space [Formula: see text], where [Formula: see text] stands for a closed subgroup of the Heisenberg motion group [Formula: see text]. That is, the parameter space admits a locally rigid (equivalently a strongly locally rigid) point if and only if [Formula: see text] is finite. Moreover, Calabi–Markus’s phenomenon and the question of existence of compact Clifford–Klein forms are also studied.

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Shalom, Avshalom, Doron Klein, Tal Friedman, and Melvyn Westreich. "Lack of Complications in Minor Skin Lesion Excisions in Patients Taking Aspirin or Warfarin Products." American Surgeon 74, no. 4 (April 2008): 354–57. http://dx.doi.org/10.1177/000313480807400417.

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Many patients undergoing surgical procedures take medications that influence the coagulation system. It is common practice to discontinue the use of aspirin and warfarin products 7 to 10 days before any major surgical procedure. However, there is some controversy as to whether these medications should be discontinued for minor dermatological procedures. Our aim was to study the incidence of complications in patients receiving aspirin or warfarin and undergoing minor dermatological procedures. Two thousand three hundred twenty-six patients, operated on by a single surgeon, were studied for complications. Warfarin was used by 28 patients, 228 took aspirin, and the remainder took neither. There was no difference in the complication rate among the three groups as long as the surgeon diligently obtained hemostasis. It appears that patients taking aspirin or warfarin do not need to discontinue these medications before minor dermatological procedures.

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Deo, Satya, and K. Varadarajan. "Discrete Groups and Discontinuous Actions." Rocky Mountain Journal of Mathematics 27, no. 2 (June 1997): 559–83. http://dx.doi.org/10.1216/rmjm/1181071925.

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Lim, Wendy, Myra Wang, Karen Woods, Mark Crowther, and James Douketis. "The Management of Anticoagulated Patients Requiring Dental Extraction: A Cross-Sectional Survey of Oral Surgeons and Hematologists." Blood 108, no. 11 (November 16, 2006): 629. http://dx.doi.org/10.1182/blood.v108.11.629.629.

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Abstract Background: Studies in the dental literature and guidelines from the American Dental Association (ADA) and American College of Chest Physicians (ACCP) suggest that oral anticoagulants do not need to be discontinued prior to dental extraction. Despite this, anticoagulants are routinely discontinued due to perceived risks in bleeding. This practice may place patients at avoidable risk of thromboembolic complications. Objectives: To compare how oral surgeons and hematologists manage patients receiving long-term vitamin K antagonists (warfarin) who also require dental extraction. Design: Cross-sectional survey. Methods: Pre-tested surveys were mailed to 168 oral and maxillofacial surgeons and 123 hematologists/thromboembolism specialists licensed to practice in Ontario, Canada. The survey consisted of 3 parts: an assessment of bleeding and thrombotic risk factors that influence practioners’ decision to discontinue anticoagulants, individual scenarios assessing practice patterns, and clinical scenarios with varying risks of bleeding and thrombosis. For the clinical scenarios, respondents were asked to rate their risk perception on a 10-point scale, and the means and standard deviations of the responses between oral surgeons and hematologists were compared using unpaired t-tests, SPSS Version 12.0. Results: A total of 291 surveys were mailed with a response rate of 47% (136 surveys). 82 (60%) of the respondents were oral surgeons (75% community-based, 25% academic) and 54 (40%) were hematologists (28% community-based, 72% academic). Warfarin is routinely discontinued at least 50% of the time by 37% of dental surgeons, compared to 71% of hematologists; 29% of hematologists reported always discontinuing warfarin. The 3 main factors that influence oral surgeons’ and hematologists’ decision to discontinue warfarin are complicated procedures, multiple extractions and patients with a prior history of bleeding; 20% of hematologists discontinue anticoagulants because of specific referral to manage anticoagulants around the time of extraction. The maximum international normalized ratio (INR) that hematologists consider acceptable for extraction is 2.0, with no hematologists recommending extraction above this level; 86% of oral surgeons would proceed with extraction with an INR up to 3.0. In the individual scenarios, oral surgeons are more likely to continue warfarin and use local measures (sutures, gelfoam) to control bleeding. Hematologists are more likely to discontinue warfarin, use bridging anticoagulant therapy and recommend antifibrinolytic agents. In the clinical scenarios assessing thrombotic risk, oral surgeons are more likely to perceive that the risk of thrombosis is higher than hematologists (p < 0.01). In contrast, in the clinical scenarios assessing bleeding risk, the risk of bleeding was rated to be similar by both groups. Conclusions: Despite ADA and ACCP recommendations to continue anticoagulant therapy in most patients undergoing dental procedures, over 70% of hematologists, and 37% of dental surgeons in our survey frequently discontinue anticoagulants. Although the cited reasons for discontinuation are similar between the 2 groups, the frequency of discontinuation is significantly lower in oral surgeons and may be related to the perception that thromboembolic risks are high compared to hematologists’ risk assessments.

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Tur, Carmen, Mar Tintoré, Angela Vidal-Jordana, Joaquín Castilló, Ingrid Galán, Jordi Río, Georgina Arrambide, et al. "Natalizumab discontinuation after PML risk stratification: outcome from a shared and informed decision." Multiple Sclerosis Journal 18, no. 8 (March 1, 2012): 1193–96. http://dx.doi.org/10.1177/1352458512439238.

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Multifocal progressive leukoencephalopathy (PML) is associated with JC virus (JCV) seropositivity, past immunosuppression, and natalizumab treatment for two years or more. The aim of our study was to investigate the rate of treatment discontinuation after stratifying for the three risk factors in a group of 104 natalizumab-treated patients with relapsing–remitting multiple sclerosis. We investigated JCV serological status in our population. We then divided patients into groups according to their PML risk. Treatment indication was reassessed. Of the patients, 64 (61.5%) were JCV seropositive. Amongst seropositive patients on natalizumab for 2 years or more, 10 had received immunosuppression (group A), and 38 had not (group B). After an informed and shared decision-making process, 6/10 (60%) from group A compared with 9/38 (23.7%) from group B discontinued treatment ( p=0.027). In groups A and B, discontinuation also depended upon doctors’ views ( p=0.019, group A; p=0.010, group B) and clinical outcomes ( p=0.021, group A). No-one from low–intermediate risk groups discontinued. The decision to discontinue natalizumab treatment is complex, even when clear PML risk rates are described. Clinical outcomes and doctors’ idiosyncrasies play a crucial part in patients’ final choice.

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Baklouti, Ali, and Souhail Bejar. "Variants of stability of discontinuous groups for Euclidean motion groups." International Journal of Mathematics 28, no. 06 (May 7, 2017): 1750046. http://dx.doi.org/10.1142/s0129167x1750046x.

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Let [Formula: see text] be a Lie group, [Formula: see text] a closed subgroup of [Formula: see text] and [Formula: see text] a discontinuous group for the homogeneous space [Formula: see text]. Given a deformation parameter [Formula: see text], the deformed subgroup [Formula: see text] may fail to act properly discontinuously on [Formula: see text]. To understand this phenomenon in the case when [Formula: see text] stands for an Euclidean motion group [Formula: see text], we compare the notion of stability for discontinuous groups (cf. [T. Kobayashi and S. Nasrin, Deformation of properly discontinuous action of [Formula: see text] on [Formula: see text], Int. J. Math. 17 (2006) 1175–1193]) with its variants. We prove that the defined stability variants hold when [Formula: see text] turns out to be a crystallographic subgroup of [Formula: see text].

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Khlif, Fatma. "Stability of discontinuous groups for reduced threadlike Lie groups." International Journal of Mathematics 26, no. 08 (July 2015): 1550057. http://dx.doi.org/10.1142/s0129167x15500573.

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Let G be a reduced threadlike Lie group, H an arbitrary closed connected subgroup of G and Γ ⊂ G an abelian discontinuous subgroup for G/H. We study in this work some topological properties of the parameter space [Formula: see text] and the deformation space [Formula: see text], namely the stability and the rigidity. Instead of treating stability, we consider a weaker form by using an explicit covering of Hom (Γ, G) which we call layering and we show that the local rigidity holds if and only if Γ is finite.

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Weidmann, Richard. "The rank of planar discontinuous groups." Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg 72, no. 1 (December 2002): 1–8. http://dx.doi.org/10.1007/bf02941660.

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Dissertations / Theses on the topic "Groupes discontinus"

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Coornaert, Michel. "Sur les groupes proprement discontinus d'isométries des espaces hyperboliques au sens de Gromov." Strasbourg 1, 1990. http://www.theses.fr/1990STR13168.

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Hitta, Amara. "(Co)homologie continue et lisse des groupes localement compacts totalement discontinus et suite spectrale de Hochschild-Serre." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37605931b.

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Estrade, Anne. "Calcul stochastique discontinu sur les groupes de lie." Orléans, 1990. http://www.theses.fr/1990ORLE2007.

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On etudie le plongement dans un groupe de lie des semi-martingales discontinues vectorielles et, reciproquement, le relevement des semi-martingales du groupe sur un espace vectoriel. Dans un premier temps, on presente ces procedes: le plongement est realise grace a une exponentielle stochastique, definie soit comme solution d'une equation differentielle stochastique sur le groupe, soit comme une integrale stochastique multiplicative; le relevement en est l'application inverse. Dans un second temps, on met a profit ces outils de transfert pour preciser le comportement des processus du groupe: elements caracteristiques (partie martingale continue et mesure de sauts), processus a accroissements independants, phenomenes lies aux changements absolument continus de probabilites

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Perron, Stéphanie. "Les groupes cycliques discrets d'isométries du bidisque." Mémoire, Université de Sherbrooke, 2015. http://hdl.handle.net/11143/7517.

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Dans ce mémoire, on présente un espace de la géométrie hyperbolique, le bidisque. On y parle de la géométrie du bidisque et pour ce faire on expose en détail la géométrie du plan hyperbolique. Ensuite, on présente les groupes d’isométries du bidisque pour lesquels on décrit les groupes d’isométrie du plan hyperbolique. Enfin, on donne des conditions nécessaires et suffisantes pour que des sous-groupes cycliques d’isométries du bidisque soient discrets.

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Kiehlmann, Jonathan. "Abelian profinite groups and the discontinuous isomorphism problem." Thesis, Imperial College London, 2015. http://hdl.handle.net/10044/1/33335.

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We investigate the question: ''Can there be a non-continuous isomorphism between two profinite groups which are not topologically isomorphic?" On one end of the spectrum, we show that branch and semisimple profinite groups have no non-continuous automorphisms. On the other, many abelian pro-$p$ groups are abstractly but not topologically isomorphic. The question for countably-based profinite groups was totally answered in a previous publication. There are many examples of such groups which are abstractly but not topologically isomorphic: we give explicit constructions of such non-topological isomorphisms We used Pontryagian duality to reduce the question of classifying countably based abelian pro-$p$ groups to that of countable abelian $p$-groups. In the 1930s Ulm and Zippin classified countable abelian $p$-groups. This work was expanded in the 1970s, to give the theory of totally projective abelian $p$-groups. We survey the structural theory of these groups and construct their duals, the totally injective groups. These provide more positive answers to our question: every dual-reduced totally injective pro-$p$ group is abstractly isomorphic to the closure of its torsion subgroup, although in most cases these groups are not topologically isomorphic. We proceed to give a detailed discussion on the features of the abstract and of the topological subgroup structures of such groups. We introduce a new invariant, unbounded multiplicity, of Cartesian products of finite $p$-groups, in the above proof. This allows us to use infinite combinatorial arguments which give more results. Two of these Cartesian groups are isomorphic modulo their torsion subgroups if and only if they have the same unbounded multiplicity. A totally injective pro-$p$ group will be abstractly isomorphic to its closed torsion subgroup whenever the unbounded multiplicity of this subgroup bounds the dimension of continuous torsion-free quotients. Additionally, we construct a new class of commutative, unital pro-$p$ rings. For each totally injective abelian pro-$p$ group $G$, we construct a pro-$p$ ring $R$ with $(R,+)=G$.

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Zhang, Jing Chun, University of Western Sydney, and of Informatics Science and Technology Faculty. "Trigonometric polynomial high order neural network group models for financial data simulation and prediction." THESIS_FIST_XXX_Zhang_J.xml, 1998. http://handle.uws.edu.au:8081/1959.7/426.

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This thesis investigates a new method for financial data simulation using novel neural network models developed by the author. Using two improved models for financial data simulation and prediction, the trigonometric polynomial higher order neural network group models have been developed. The theoretical principles of these improved models are presented and demonstrated in the thesis. It is the first attempt to use trigonometric polynomial high order neural network group models for financial data simulation. We could not find any references to using trigonometric polynomial high order neural network group models for financial data simulation in the extensive literature search conducted for this thesis, including a thorough Internet search on this topic. The author has developed a computer program, called 'THONG'. The program, running on X-windows, is based on the new neural network models developed, and also uses group models. This program allows users to apply in practice his new analysis and prediction method. The 'THONG' program is a user-friendly GUI system. All the steps of the operation in this system are easily controlled using a mouse. Both system operation and system mode can be viewed during the processing of data. THONG models have proven capable of handling high frequency, high order nonlinear and discontinuous data. The results of processing the experimental data using the THONG financial simulator are presented in the thesis. These results confirm that the THONG group models converge without difficulty, and are considerably more accurate than traditional neural network models.
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椋野, 純一, and Junichi Mukuno. "Properly discontinuous isometric group actions on pseudo-Riemannian manifolds." Thesis, 2014. http://hdl.handle.net/2237/19977.

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Books on the topic "Groupes discontinus"

1

1968-, Schmidt Ralf, ed. Elements of the representation theory of the Jacobi group. Boston: Birkhäuser Verlag, 1998.

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2

Giraud, Georges. Sur une classe de groupes discontinus de transformations birationnelles quadratiques et sur les fonctions de trois variables independantes restant invariables par ces transformations. Paris: Gautheir-Villars, 1991.

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J, Earle Clifford, Harvey William 1941-, and Recillas-Pishmish Sevín 1943-, eds. Complex manifolds and hyperbolic geometry: II Iberoamerican Congress on Geometry, January 4-9, 2001, CIMAT, Guanajuato, Mexico. Providence, R.I: American Mathematical Society, 2002.

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1890-1959, Nielsen Jakob, and Schmidt Asmus L, eds. Discontinuous groups of isometries in the hyperbolic plane. Hawthorne, NY: Walter de Gruyter, 2002.

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Fenchel, W. Discontinuous groups of isometries in the hyperbolic plane. Berlin: Walter de Gruyter, 2003.

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Fenchel, Werner, and Jakob Nielsen. Discontinuous Groups of Isometries in the Hyperbolic Plane. Edited by Asmus L. Schmidt. Berlin, New York: DE GRUYTER, 2002. http://dx.doi.org/10.1515/9783110891355.

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1946-, Vignéras Marie France, and Waldspurger Jean-Loup 1953-, eds. Correspondances de Howe sur un corps p-adique. Berlin: Springer-Verlag, 1987.

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1968-, Schmidt Ralf, ed. Elements of the representation theory of the Jacobi group. Basel: Springer Basel, 2011.

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Balaji, T. E. Venkata. An introduction to families, deformations and moduli. Göttingen: Universitätsverlag Göttingen, 2010.

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Quantization and arithmetic. Basel: Birkhäser, 2008.

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Book chapters on the topic "Groupes discontinus"

1

Elstrodt, Jürgen, Fritz Grunewald, and Jens Mennicke. "Examples of Discontinuous Groups." In Springer Monographs in Mathematics, 443–95. Berlin, Heidelberg: Springer Berlin Heidelberg, 1998. http://dx.doi.org/10.1007/978-3-662-03626-6_10.

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Dehn, Max. "On Infinite Discontinuous Groups." In Papers on Group Theory and Topology, 133–78. New York, NY: Springer New York, 1987. http://dx.doi.org/10.1007/978-1-4612-4668-8_8.

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Shimura, G. "Discontinuous groups and abelian varieties." In Collected Papers, 1–29. New York, NY: Springer New York, 2002. http://dx.doi.org/10.1007/978-1-4612-2076-3_1.

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Maskit, Bernard. "Discontinuous Groups in the Plane." In Grundlehren der mathematischen Wissenschaften, 15–40. Berlin, Heidelberg: Springer Berlin Heidelberg, 1987. http://dx.doi.org/10.1007/978-3-642-61590-0_2.

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Parshin, A. N. "Surfaces and Planar Discontinuous Groups." In Algebra VII, 61–90. Berlin, Heidelberg: Springer Berlin Heidelberg, 1993. http://dx.doi.org/10.1007/978-3-642-58013-0_4.

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Zimmermann, Bruno. "Generators and Relations for Discontinuous Groups." In Generators and Relations in Groups and Geometries, 407–36. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3382-1_14.

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Shimura, Goro. "Algebraic number fields and symplectic discontinuous groups." In Collected Papers, 141–230. New York, NY: Springer New York, 2002. http://dx.doi.org/10.1007/978-1-4612-2076-3_4.

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Kobayashi, Toshiyuki. "Discontinuous Groups for Non-Riemannian Homogeneous Spaces." In Mathematics Unlimited — 2001 and Beyond, 723–47. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-642-56478-9_37.

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Tagg, John. "The Discontinuous City: Picturing and the Discursive Field." In Grounds of Dispute, 134–56. London: Macmillan Education UK, 1992. http://dx.doi.org/10.1007/978-1-349-21917-9_8.

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Rosenberger, Gerhard. "Minimal generating systems for plane discontinuous groups and an equation in free groups." In Groups — Korea 1988, 170–86. Berlin, Heidelberg: Springer Berlin Heidelberg, 1989. http://dx.doi.org/10.1007/bfb0086254.

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Conference papers on the topic "Groupes discontinus"

1

Stegnar, M., I. Keber, D. Keber, and N. Vene. "DISCREPANCY IN FIBRINOLYTIC RESPONSE TO VARIOUS STIMULI IN HEALTHY MEN." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643118.

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Absent or low fibrinolytic response to stimulation is believed to reflect thrombotic tendency. However, it has been observed, that poor response to one stimulus is not always associated with poor^ response to other stimuli. Therefore, correlation between fibrinolytic responses to various stimuli has been studied in two groups of healthy men. Nine volunteers of the first group were subjected to 20 min upper arm venous occlusion (VO) followed by vasopressin analogue (DDAVP) infusion (0,4 ug/kg body weight in 10 min). In the second group (16 volunteers) VO and physical exercise (EXER, discontinuous test on treadmill up to maximal heart rate) were applied successively in this order. Venous blood was sampled before stimulation and in the 20 min of VO in both groups. The third blood sample was obtained 20 min after start of DDAVP infusion in the first group and immediately after EXER in the second group. Fibrinolytic activity was determined by euglobulin clot lysis time and by specific tissue plasminogen activator (t-PA) activity assay and increase in activity above prestimulation value calculated. No significant correlation between fibrinolytic response to VO and DDAVP was observed in the first group. Also in the second group responses to V0 and EXER showed no correlation.The observed discrepancy in fibrinolytic responses to various stimuli rise an important question: Which fibrinolytic response is more relevant to development of thrombosis?

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Walker, Isobel D., J. F. Davidson, D. J. Wheatley, K. MacArthur, and T. J. Spyt. "EFFECTS OF CONSTANT INFUSION OF ILOPROST, A STABLE PROSTACYCLIN DERIVATIVE DURING CARDIOPULMONARY BYPASS." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643585.

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Prostacyclin (PGI2) is a potent inhibitor of platelet aggregation but it is highly unstable. Iloprost (Schering A.G.) is a stable carbacyclin derivative of PGI2 which is also a potent inhibitor of platelet aggregation. The effect of constant Iloprost infusion during cardiopulmonary bypass (CPB) on blood loss, platelet numbers, secretory proteins and platelet sequestration was studied in 50 adult males undergoing CPB for elective coronary vein bypass graft surgery.In a double-blind, randomised, placebo-controlled study (25 patients in each group) intravenous infusion of Iloprost was commenced at 5ng/kg/min immediately after the induction of anaesthesia and increased to 10ng/kg/min when the patient was established on CPB. The infusion was discontinued on completion of CPB. Blood loss and units of blood transfused were not significantly different in the two treatment groups. During CPB, mean platelet numbers fell significantly in both groups but were significantly higher (P<.001) in the Iloprost group than in the placebo group at the end of CPB and until 18-24 hours post CPB (P<.05). Mean plasma thromboxane B2 and β thromboglobulin levels were marginally lower (P<.05 and P<.02) in the Iloprost group but the distribution of platelet factor 4 results were similar in both groups. Post operative spontaneous platelet aggregation was similar in both groups. Platelet sequestration in oxygenators and arterial line filters was assessed using Indium labelled patients’ platelets reinjected immediately after commencing Iloprost infusion. Platelet sequestration was significantly greater in the placebo group than in the Iloprost group both in the oxygenators (placebo 9.2%, Iloprost 3.4% : P<.001) and in the arterial line filters (placebo 4.8%, Iloprost 0.6% : PC.05).Blood pressure was significantly lower in the Iloprost group than in the placebo group throughout the infusion period.Constant infusion of Iloprost during CPB is associated with significantly less platelet sequestration. The importance of this is not only in the conservation of platelet numbers but also the potential reduction in risk of platelet aggregate embolisation.

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Sasahara, A. A., and F. J. Diserio. "DIHYDROERGOTAMINE-HEPARINPROPHYLAXIS OF DVT IN TOTAL HIP REPLACEMENT PATIENTS: A MULTICENTER TRIAL." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643688.

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We report on the results of a controlled, blinded, U.S. multicenter trial in theprophylaxis of postoperative DVT in total hip replacement patients. One hundred and forty-eight (148) patients were enrolled in this evaluation of two parallel treatment groups: (1) dihydroergotamine 0.5 mg with heparin 5000 units(DHE/5000),or (2) matching placebo. Treatment was administered subcutaneously preoperatively and continued three times a day (Q8h)for at least seven days. One hundred andtwenty-eight (128) of these were valid protocol compilers.Daily radiofibrinogen leg scans performed for the duration of treatment were followed by venographic evaluation on postoperative Day 7 or when the RFUT indicated a sustained positive reading for 48 hours. In 12 patients venography was not performed and these patients are not included in the efficacy analysis, as were eight other protocol violators. The venographically confirmed positive DVT rates for the consultant's review (protocol compilers) were 25% (16/63) for DHE/5000 and 52% (32/65) for placebo, a statistically significant difference in effective prevention of DVT (p=0.0021, two tailed Fisher's exact test)The incidence of proximal thrombi (popliteal and above) was reduced from 18.5% (12/65 patients) in the placebo group to 4.8% (3/63patients) in the group treated with DHE/Heparin (p=0.0255), while the incidence of extensive thrombi (<25% occlusion) was reduced from 24.6% (16/65 patients) to9.5% (6/63 patients) in the respective groups (p=0.0399).The most common side effect was injection site hematoma occurring in seven of the DHE/5000 patients and two of the placebo patients. One DHE/5000 patient discontinued treatment due to a side effect (injection site hematoma) attributable to drug and three placebo patients discontinued treatment due to side effects (two of these had confirmed pulmonary embolism).These data confirm previous investigations supporting the efficacy and safetyof DHE/5000 for the prevention of postoperative DVT in patients undergoing totalhip replacement.

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El-Sherbiny, Muhammad M., Rami M. El-Sherbiny, and Hussein El-Mamlouk. "Three Dimensional Effect of Grouted Discontinuous Berms for Passive Support of Diaphragm Walls." In Grouting 2017. Reston, VA: American Society of Civil Engineers, 2017. http://dx.doi.org/10.1061/9780784480809.054.

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Dietzel, Dirk, Timon Hitz, Claus-Dieter Munz, and Andreas Kronenburg. "Expansion rates of bubble clusters in superheated liquids." In ILASS2017 - 28th European Conference on Liquid Atomization and Spray Systems. Valencia: Universitat Politècnica València, 2017. http://dx.doi.org/10.4995/ilass2017.2017.4714.

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The present work analyses the growth of multiple bubbles in superheated liquid jets by means of direct numericalsimulations (DNS). A discontinuous Galerkin approach is used to solve the Euler equations and an adequate in- terface resolution is ensured by applying finite-volume sub-cells in cells with interfaces. An approximate Riemann solver has been adapted to account for evaporation and provides consistency of all conserved quantities across the interface. The setup mimics conditions typical for orbital manoeuvring systems when liquid oxygen (LOX) is injected into the combustion chamber prior to ignition. The liquid oxygen will then be in a superheated state, bubble nucleation will occur and the growth of the bubbles will determine the break-up of the liquid jet. The expansion rates of bubble groups under such conditions are not known and standard models rely on single bubble assumptions. This is a first DNS study on bubble-bubble interactions in flash boiling sprays and on the effects of these interactions on the growth rates of the individual bubbles. The present simulations resolve a small section of the jet close to the nozzle exit and the growth of bubble groups inside of the jet is analysed. The results suggest that an individual bubble within the group grows more slowly than conventional models for single bubble growth would predict. The reduction in bubble growth can amount to up to 30% and depends on the distances between the bubbles and the number of bubbles within the bubble group. In the present case, the volume expansion of the superheated liquiddecreases by approximately 50% if the distance between the bubbles is doubled.DOI: http://dx.doi.org/10.4995/ILASS2017.2017.4714

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Neri Semeri, G. G., F. Rovelli, G. F. Gensini, S. Pirelli, M. Carnovali, and A. Fortini. "FREVENTION OF MYOCARDIAL REINFARCTION BY LOW DOSE HEPARIN." In XIth International Congress on Thrombosis and Haemostasis. Schattauer GmbH, 1987. http://dx.doi.org/10.1055/s-0038-1643597.

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The effectiveness of low dose heparin in the prevention of myocardial reinfarction was investigated in a multi centric randomized controlled study. After having given their, informed consent to undergo daily subcutaneous heparin adninistratian, 728 patients of both sex aged 50-75 years, who had suffered frcm a transmural myocardial infarction 6-18 months before the enrollment and were in the I or II NYHA class were randomized. 365 patients (control group) were an the therapy usually performed by the 21 experimental canters participating in the study and 363 (heparin group) were treated with subcutaneous calcium heparin (Calciparina®) 12,500 IU daily in addition to the usual therapy of the centers. Curing enrollment the balancement of the two grcups was periodically checked for age, sex, serum cholesterol, cigarette smoking, blood pressure, site of infarction, arrhythmias and drug regimen. The prospect!vely established end-points were: transmural reinfarctioi as primary end-point; general mortality and mortality for cardiovascular events as accessory end-points over a mean follow-up period of 24 nxnths. Statistical analysis was foreseen both on drug efficacy (EE) and intention to treat (IT) basis. Patients of both groups underwent periodical examinations during the study. Acherence to the therapy and bone mineral content (bone density by double isotope technique) were also checked. At the end of the study the balancement for the factors considered was satisfactory and the drop-outs were 7.7% in heparin group and 6.3% in control group (ns). In heparin group the re infarction rate was lcwer by 62.92% than in control group. At life table analysis the difference was statistically significant (p<0.05 DE and p=0.05 IT). Mortality rate was reduced by 47.61% (DE) in heparin group (p<0.05 at life table analysis). Cardiovascular mortality was not significantly reduced (−33.06%), but the mortality attributable to thromboembolism was reduced in heparin group (p<0.05). Sixty patients (16.5%) discontinued heparin treatment, but only in 23 patients (6.3%) suspension was due to side effects.

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Lee, Chung-Ching. "Discontinuous Mobility of a Folding Square-Block Toy: A Class of Single Loop Spatial 8-Bar Mechanism." In ASME 7th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2004. http://dx.doi.org/10.1115/esda2004-58123.

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Based on the group theory and group algebraic structure of the displacement set, an interesting playing toy of the magic folding square block belonging to one class of single-loop spatial eight-revolute mechanism is offered to illustrate the discontinuous mobility of mechanism. This folding toy’s mobility generally has two finite global dofs as a whole kinematic chain. Nevertheless, during the movement, the permanent finite mobility of mechanism depends on the various positions of joints. When the block profile-shape constraints are taken into account, one bifurcation between one 2-dimensional manifold and one 1-dimensional manifold occurs at an initial transition position and the other bifurcation between two 1-dimensional manifolds exists in another specified configuration. In addition, any motion of one working mode destroys the geometrical condition that is required for the other modes but a bifurcation toward a spatial mode with two finite dofs remains possible by ingoring the profile shape constraints. In fact, there is a discontinuous mobility with a trifurcation among three subsets. It is composed of a general spatial mode with 2-dimensional manifold, one part mobility chain of 2-dimensional manifold and another part mobility chain of 1-dimensional manifold.

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Ringstrand, Bryan S., Brian Mogavero, J. Tyler Despard, Millicent Firestone, and David Podlesak. "Discontinuous density gradient fractionation of detonation soot for complete nanocarbon characterization." In SHOCK COMPRESSION OF CONDENSED MATTER - 2017: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter. Author(s), 2018. http://dx.doi.org/10.1063/1.5044907.

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Aida, Toru, John W. Walter, John B. Bdzil, Mark Elert, Michael D. Furnish, Ricky Chau, Neil Holmes, and Jeffrey Nguyen. "APPLICATION OF DETONATION SHOCK DYNAMICS (DSD) TO YOUNGS-TYPE DISCONTINUOUS INTERFACE GEOMETRY." In SHOCK COMPRESSION OF CONDENSED MATTER - 2007: Proceedings of the Conference of the American Physical Society Topical Group on Shock Compression of Condensed Matter. AIP, 2008. http://dx.doi.org/10.1063/1.2833247.

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Lee, Chung-Ching, and Jacques M. Hervé. "Discontinuous Mobility of One Family of Spatial 6R Mechanisms Through the Group Algebraic Structure of Displacement Set." In ASME 2002 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASME, 2002. http://dx.doi.org/10.1115/detc2002/mech-34273.

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Reports on the topic "Groupes discontinus"

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Endeve, Eirik, Ran Chu, Anthony Mezzacappa, and Bronson Messer II. Towards a Discontinuous Galerkin Method for the Multi-Group Two-Moment Model of Neutrino Transport. Office of Scientific and Technical Information (OSTI), January 2018. http://dx.doi.org/10.2172/1513431.

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