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A Characterization of Generalized Monotone Normed Cones

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Acta Mathematica sinica,English series 2007年第6期23卷 1067-1074页

作者： s.ROMAGUERA E.A.sNCHEZ-PREZ O.VALERO Escuela de Caminos Departamento de Matemdtiea Aplicada Universidad Politdcnica de Valencia46071 ValenciaSpain Departamento de Ciencias Matématicas e Informática Universidad de las Islas BalearesEdificio Anselm Turmeda07122 PalmaBalearesSpain

Let C be a cone and consider a quasi-norm p defined on it. We study the structure of the couple （C, p） as a topological space in the case where the function p is also monotone. We characterize when the topology of a quasi-normed cone can be defined by means of a monotone norm. We also define and study the dual cone of a monotone normed cone and the monotone quotient of a general cone. We provide a decomposition theorem which allows us to write a cone as a direct sum of a monotone subcone that is isomorphic to the monotone quotient and other particular subcone.

关键词： quasi-norm monotone cones

Management of Vulnating Esophageal Foreign Bodies in Burkina Faso

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International Journal of Otolaryngology and Head & Neck surgery 2024年第2期13卷 135-148页

作者： Ibrahima Diallo Aboubacar Gouéta Alseny Camara Assoumi Anatou Biga Mama Brigitte Ouoba Edi Emmanuel Martial Nao Moustapha sérémé Bertin Priva Ouédraogo Yvette Marie Chantal Gyébré Abdoulaye Keita Alpha Oumar Diallo ENT and HNs Department Yalgado Ouédraogo University Hospital Ouagadougou Burkina Faso ENT and HNs Department Bogodogo University Hospital Ouagadougou Burkina Faso ENT and HNs Department Tengandogo University Hospital Ouagadougou Burkina Faso ENT and HNs Department Conakry University Hospital Conakry Guinea

Introduction: Esophageal foreign bodies (EFB) are a diagnostic and therapeutic emergency because of the serious complications they can cause. Aim: This paper aimed to study the vulnating esophageal foreign bodies in the ENT and Head and Neck surgery departments of the Yalgado Ouedraogo and Bogodogo University Hospital. Methodology: This was an analytic cross-sectional study with retrospective data collection over 10 years (2012-2021). Results: We collected 91 cases of vulnating esophageal foreign bodies, i.e. 9.1 cases/year (4.7%). The mean age of the patients was 14 ± 19 years. The sex ratio was 1.6. The circumstances of occurrence were dominated by accidental ingestion of vulnating esophageal foreign bodies (98.9%). The average time to consultation was 7.5 hours. Dysphagia was the dominant symptom (64.8%). Cervico-thoracic radiography found dual contour radiopaque images in 71.4%. Esophagoscopy with rigid tube was performed in 97.8%. The average time for extraction of the vulnating esophageal foreign bodies was 8 hours. Vulnerating esophageal foreign bodies were non-organic in 84.6%. The button cell represented 64.8%. Their location was cervical in 61.5% intraoperatively. The lesion assessment found ulcerative lesions in 42.9% (p Conclusion: Vulnating esophageal foreign bodies are relatively frequent in our ENT practice. Although their diagnosis is often easy, their treatment is still difficult and requires multidisciplinary management. Thus, for us, prevention remains the first effective weapon.

关键词： Foreign Bodies Esophagus Vulnerable Management sequelae

Evaluation of Clinical Characteristics and Plasma Cortisol Concentrations in Individuals with COVID-19 and Post-COVID syndrome

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Case Reports in Clinical Medicine 2024年第1期13卷 12-24页

作者： David Alejandro García López stephania Ramos Hernández Yamile López-Hernández María Argelia López Luna Elena Donaji Ramírez Alvarado Rosa María Ramírez santoyo sergio Hugo sánchez Rodríguez Laboratorio de Biología Celular y Neurobiología Universidad Autónoma de Zacatecas México Zacatecas Unidad Académica de Ciencias Químicas Universidad Autónoma de Zacatecas México Zacatecas Laboratorio de Metabolómica y Proteómica Universidad Autónoma de Zacatecas México Zacatecas Laboratorio de Bacterias y Hongos filamentosos Universidad Autónoma de Zacatecas México Zacatecas

COVID-19 generates systematic alterations in humans both in active stages of infection and over time, called post-COVID syndrome. Cortisol is a hormone that is overexpressed in inflammation and cellular stress processes. Its main function is to return to physiological homeostasis, so its evaluation together with other clinical parameters can allow us to determine the degree of systemic affectation by COVID-19. Objective: To evaluate changes in clinical parameters and plasma cortisol concentrations in patients with active COVID-19 and post-COVID syndrome. Material and Methods: Healthy patients, in stages of mild infection, critical and with post-COVID syndrome, were recruited, obtaining, through clinical diagnoses and interviews, their main clinical characteristics, in addition to plasma, in which cortisol concentrations were determined using competitive ELIsA. Results: The critical stage group had higher frequencies of comorbidities, clinical symptoms, as well as more altered laboratory parameters compared to the other subgroups. In the post-COVID syndrome group after the initial infection, most laboratory parameters recovered, however, several clinical symptoms remained latent over time. The determination of cortisol showed an increase in its concentration, being higher in patients in critical stage and with post-COVID syndrome. Conclusion: COVID-19 disease generates clinical alterations that trigger an increase in plasma cortisol. These alterations increase as the stages of infection become more severe and some of them remain altered in patients with post-COVID syndrome.

关键词： COVID-19 Cortisol Post-COVID syndrome

Computational approaches to substrate-based cell motility

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npj Computational Materials 2016年第1期2卷 103-118页

作者： Falko Ziebert Igor s Aranson Physikalisches Institut Albert-Ludwigs-Universität FreiburgFreiburgGermany Institut Charles sadron CNRS-UPR22StrasbourgFrance Materials science Division Argonne National LaboratoryArgonneILUSA Engineering sciences and Applied Mathematics Northwestern UniversityEvanstonILUSA

substrate-based crawling motility of eukaryotic cells is essential for many biological functions,both in developing and mature *** dysfunctions are involved in several life-threatening pathologies such as cancer and *** cells are also a natural realisation of active,self-propelled‘particles’,a popular research topic in nonequilibrium ***,from the materials perspective,assemblies of motile cells and evolving tissues constitute a class of adaptive self-healing materials that respond to the topography,elasticity and surface chemistry of the environment and react to external *** a comprehensive understanding of substrate-based cell motility remains elusive,progress has been achieved recently in its modelling on the whole-cell *** we survey the most recent advances in computational approaches to cell movement and demonstrate how these models improve our understanding of complex self-organised systems such as living cells.

关键词： motility healing metastasis

Grobner-shirshov Bases for Replicated Algebras

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Algebra Colloquium 2017年第4期24卷 563-576页

作者： P.s. Kolesnikov sobolev Institute of Mathematics Akad. Koptyug prosp. 4 630090 Novosibirsk Russia

We establish a universal approach to solutions of the word problem in the varieties of di- and tri-algebras. This approach, for example, allows us to apply Grobner-shirshov bases method for Lie algebras to solve the ideal membership problem in free Leibniz algebras （Lie di-algebras）. As another application, we prove an analogue of the Poincare-Birkhoff-Witt Theorem for universal enveloping associative tri-algebra of a Lie tri-algebra （CTD!-algebra）.

关键词： di-algebra tri-algebra Grobner-shirshov basis

Clostridium diffi cile associated infection,diarrhea and colitis

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World Journal of Gastroenterology 2009年第13期15卷 1554-1580页

作者： Perry Hookman Jamie s Barkin University of Miami Miller school of Medicine Division of Gastroenterology Mount Sinai Medical Center

A new, hypervirulent strain of Clostridium difficile, called NAP1/BI/027, has been implicated in C. difficile outbreaks associated with increased morbidity and mortality since the early 2000s. The epidemic strain is resistant to fluoroquinolones in vitro, which was infrequent prior to 2001. The name of this strain reflects its characteristics, demonstrated by different typing methods： pulsed-field gel electrophoresis （NAP1）, restriction endonuclease analysis （BI） and polymerase chain reaction （027）. In 2004 and 2005, the us Centers for Disease Control and Prevention （CDC） emphasized that the risk of C. difficile-associated diarrhea （CDAD） is increased, not only by the usual factors, including antibiotic exposure, but also gastrointestinal surgery/manipulation, prolonged length of stay in a healthcare setting, serious underlying illness, immune-compromising conditions, and aging. Patients on proton pump inhibitors （PPIs） have an elevated risk, as do peripartum women and heart transplant recipients. Before 2002, toxic megacolon in C. dif/icile-associated colitis （CDAC）, was rare, but its incidence has increased dramatically. Up to two- thirds of hospitalized patients may be infected with C. difficile. Asymptomatic carriers admitted to healthcare facilities can transmit the organism to other susceptible patients, thereby becoming vectors. Fulminant colitis is reported more frequently during outbreaks of C. difficile infection in patients with inflammatory bowel disease （IBD）. C. diff/cile infection with IBD carries a higher mortality than without underlying IBD. This article reviews the latest information on C. difficile infection, including presentation, vulnerable hosts and choice of antibiotics, alternative therapies, and probiotics and immunotherapy. We review contact precautions for patients with known or suspected C. difficile- associated disease. Healthcare institutions require accurate and rapid diagnosis for early detection of possible outbreaks, to initiate s

关键词： Clostridium difficile Colitis Diarrhea Gastroenterology Nosocomial infection Iatrogenicinfection

划船和航行活动对波罗的海群岛区域鱼类补充的影响

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AMBIO－人类环境杂志 2005年第2期34卷 122-127页

作者： Alfred sandstrm Britas Klemens Eriksson Peter Kars Marin Isus Henrik schreiber 李双建瑞典国家渔业委员会海岸带调查研究所科隆大学挪威水科学研究所(NIVA) 斯德哥尔摩瑞典环境保护局

我们研究了划船和航行活动对在严格意义上的西北波罗的海的斯德哥尔摩群岛海域近岸鱼类补充的影响。这种影响可以通过对毗邻下述地区的小湾的变态幼鱼的取样来量化:①中型客船摆渡的路线;②小型划艇的停泊处(小码头);③参照区域。以植... 详细信息

我们研究了划船和航行活动对在严格意义上的西北波罗的海的斯德哥尔摩群岛海域近岸鱼类补充的影响。这种影响可以通过对毗邻下述地区的小湾的变态幼鱼的取样来量化:①中型客船摆渡的路线;②小型划艇的停泊处(小码头);③参照区域。以植物为主要食物的鱼类受到划船和航行活动的负面影响;不以植物为主要食物的鱼类受到划船和航行活动的正面影响。当欧鲌在疏浚码头数量较多时,白斑狗鱼的幼鱼在参照区域数量也显著增多。尽管沿摆渡路线数量有减少的趋势,但对河鲈来说,无法确定具有统计意义的模式。许多近岸鱼类需要依靠沉水植被作为产卵和幼鱼的底质、结构性的庇护所与觅食的生境。我们的研究结论是,划船和航行活动对沉水植被的覆盖面和高度将造成负面影响,尤其是对轮藻属和眼子菜的负面影响,可能导致幼鱼群落的改变。

关键词：波罗的海群岛海域鱼类航行划船沉水植被斯德哥尔摩正面影响白斑狗鱼

Producing High Intense Attosecond Pulse Train by Interaction of Three-Color Pulse and Overdense Plasma

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Chinese Physics Letters 2017年第5期34卷 52-55页

作者： M.salehi s.Mirzanejad Department of Atomic and Molecular Physics University of Mazandaran

Amplifying the attosecond pulse by the chirp pulse amplification method is impossible. Furthermore, the intensity of attosecond pulse is low in the interaction of laser pulse and underdense plasma. This motivates us to propose using a multi-color pulse to produce the high intense attosecond pulse. In the present study, the relativistic interaction of a three-color linearly-polarized laser-pulse with highly overdense plasma is studied. We show that the combination of ω1, ω2 and ω3 frequencies decreases the instance full width at half maximum reflected attosecond pulse train from the overdense plasma surface. Moreover, we show that the three-color pulse increases the intensity of generated harmonics, which is explained by the relativistic oscillating mirror model. The obtained results demonstrate that if the three-color laser pulse interacts with overdense plasma, it will enhance two orders of magnitude of intensity of ultra short attosecond pulses in comparison with monochromatic pulse.

关键词： Producing High Intense Attosecond Pulse Train by Interaction of Three-Color Pulse and Overdense Plasma

Verification of Gyrokinetic Particle of Turbulent simulation of Device size scaling Transport

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Plasma science and Technology 2012年第12期14卷 1125-1126页

作者： LIN Zhihong s. ETHIER T. s. HAHM W. M. TANG Department of Physics and Astronomy University of California Irvine California 92697 USA princeton Plasma Physics Laboratory Princeton University Princeton New Jersey 08543 USA Department of Nuclear Engineering Seoul National University Seoul 151-744 Korea

Verification and historical perspective are presented on the gyrokinetic particle simulations that discovered the device size scaling of turbulent transport and indentified the geometry model as the source of the long... 详细信息

关键词： turbulence transport tokamak simulation