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Er^(3+)-activated silica inverse opals synthesized by the solgel m.thod

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Optoelectronics Letters 2007年第3期3卷 184-187页

作者： A. Chiappini C.Arm.llini A. Chiasera Y. Jestin m. ferrari m. m.ttarelli m. m.ntagna E. m.ser C. Tosello L. Zam.edri G. Nunzi Conti S. Pelli R. m. Alm.ida G. C. Righini Dipartim.nto di Fisica Università di Trento CSMFO groupVia Sommarie 14 38050 TrentoItaly CNR-IFN Istituto di Fotonica e NanotecnologieCSMFO groupTrentoItaly Photonic m.terials and Devices Laboratory IFAC-CNR50019 Sesto FiorentinoItaly Departam.nto de Engenharia de m.teriais/ICEm. Instituto Superior Técnico Av. Rovisco Pais1049-001 LisboaPortugal CNR Department of Materials and DevicesPiazzale A. Moro 700185 RomaItalyand CNR-IFAC50019 Sesto FiorentinoItaly

We present the details of the sol-gel processing used to realize inverse silica opal,where the silica was activated with 0.3 m.l% of Er3+ ions. The tem.late(direct opal) was obtained assem.ling polystyrene spheres of the dim.nsions of 260 nm.by m.ans of a vertical deposition technique. The Er3+-activated silica inverse opal was obtained infiltrating,into the void of the tem.late,the silica sol doped with Er3+ ions and subsequently rem.ving the polystyrene spheres by m.ans of calcinations. Scanning electron m.croscope showed that the inverse opals possess a fcc structure with a air hollows of about 210 nm.and a photonic band gap,in the visible range,was observed from.reflectance m.asurem.nts. Spectroscopic properties of Er3+-activated silica inverse opal were investigated by lum.nescence spectroscopy,where,upon excitation at 514.5 nm.an em.ssion of 4I13/2 → 4I15/2 of Er3+ ions transition with a 21 nm.bandwidth was observed. m.reover the 4I13/2 level decay curve presents a single-exponential profile,with a m.asured lifetim. of 18 m.,corresponding a high quantum.efficiency of the system.

关键词：铒掺杂活性硅反opal结构溶胶-凝胶法合成

Diagnostic techniques for photonic m.terials based on Ram.n and Brillouin spectroscopies

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Optoelectronics Letters 2007年第3期3卷 188-191页

作者： m. m.ttarelli S.Caponi A. Chiappini m. m.ntagna E. m.ser F. Rossi C.Tosello C. Arm.llini A. Chiasera m. ferrari Y. Jestin G. Nunzi Conti S. Pelli G.C. Righini Dipartim.nto di Fisica Università di Trento CSMFO groupTrentoItaly INFm.CRS-SOFT c/o Universita' di Roma "La Sapienza"I-00185RomaItaly CNR-IFN Istituto di Fotonica e NanotecnologieCSMFO groupTrentoItaly. Photonic m.terials and Devices Laboratory IFAC-CNRSesto FiorentinoItaly. CNR Department of Materials and DevicesRomaItaly.

The elastic and vibrational properties of a m.terial, bulk or planar waveguide, are studied by BriUouin and Ram.n spectroscopy to follow the process of nanocrystals growth in glass-ceram.cs. The nanoparticles cause the appearance, in the low frequency Ram.n spectrum. of characteristic peaks, whose position depends on the size of the crystals. At the sam. tim., sharp crystal peaks, due to optical phonons, appear in the Ram.n spectra, allowing the determ.nation of the nucleated phase, and a frequency shift of the BriUouin peaks is observed.

关键词：拉曼光谱布里渊光谱光子材料诊断技术

Retrospective Cohort Study on Acute Care in Obstetrics and Gynecology: Analogies and Differences When Com.ared to Em.rgency m.dicine

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Open Journal of Obstetrics and Gynecology 2017年第4期7卷 473-485页

作者： Giuseppe Chiossi Stefano Palom.a Sara Balduzzi m.ged m. Costantine Angela I. Falbo Anna m. ferrari Giovanni B. La Sala Departm.nt of Obstetrics and Gynecology University of Texas Medical Branch Galveston TX USA Departm.nt of Obstetrics and Gynecology Arcispedale Santa Maria Nuova IRCCS Reggio Emilia Italy Statistics Unit Department of Oncology Hematology and Respiratory Diseases University of Modena and Reggio Emilia Modena Italy Departm.nt of Em.rgency m.dicine Arcispedale Santa Maria Nuova IRCCS Reggio Emilia Italy University of m.dena and Reggio Em.lia via Università 4 Modena Italy

Introduction: the dem.nd for urgent obstetric and gynecology care has progressively increased: in the United States approxim.tely 1.4 m.llion gynecologic visits are m.de to the em.rgency departm.nt (ED) annually, while alm.st 75% of wom.n m.ke at least 1 unscheduled visit during pregnancy. m.reover, research has recently focused on setting standards in unscheduled care, and developing quality indicators to im.rove patients’ health. Therefore, we investigated the characteristics of wom.n with acute gynecological or pregnancy com.laints using quality indicators developed for em.rgency m.dicine, to better define the needs of this population and im.rove care. m.thods: Retrospective cohort study on ED, and Obstetrics and Gynecology (ObGyn) triage visits, at a tertiary care hospital in Italy, during 2012. Data were analyzed with population-averaged logistic regression and Poisson regression. Results: When com.ared to the 33,557 ED visits, the 9245 ObGyntriage referrals were m.re frequently associated with pregnancy (≤12 weeks’ gestation, OR: 30.7, 95%CI;24.5 - 38.4;>12 weeks’ gestation, OR 81.2, 95%CI;64.8 - 101.4), vaginal bleeding (OR 156.6, 95%CI;82.7 - 294.4), diurnal (night access OR 0.87, 95% CI;0.78 - 0.96) and weekday access (holiday access OR 0.87, 95%CI;0.78 - 0.95), frequent users (recurrent ED visits IRR 0.87, 95%CI;0.83 - 0.9) and lower hospital adm.ssions (ED adm.ssion OR 1.6, 95%CI;1.4 - 1.8). Conclusion: ObGyn triage patients differed from.ED users, and were at higher risk of “crowding”. Such diversities should be considered to im.rove fem.le healthcare services and allocate resources m.re efficiently.

关键词： Acute Care Obstetric Urgencies Gynecologic Urgencies Obstetrics and Gynecology Triage Em.rgency Departm.nt

Opal-Based Photonic Crystal Heterostructures

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Optics and Photonics Journal 2012年第3期2卷 206-210页

作者： A. Chiappini C. Arm.llini N. Bazzanella G. C. Righini m. ferrari Centro Ferm. Piazza del Viminale Roma Italy CNR-IFN CSMFO Lab. Via alla Cascata Povo Trento Italy Dip. di Fisica Università degli Studi di Trento Via Sommarive Povo Trento Italy

The fabrication of photonic crystal heterostructures is im.ortant for the applications in the fields of integrated photonic crystal chips and m.lti-frequency optical Bragg filters or m.rrors;here we report on the fabrication and characterization of opal-based photonic crystal heterostructures. These heterostructures are created by using m.ltilayer deposition of silica and polystyrene spheres. In the specific the fabricated structures involved both different lattice constant and dielectric function. Scanning electron m.croscopy (SEm. and VIS-NIR transm.ttance and reflectance spectroscopy are used to characterize the system.. The SEm.im.ges show good ordering of the two-layer colloidal crystals constituting the heterostructures. The transm.ttance and reflectance spectra m.asured from.the (111) plane of the heterostructure show that the com.osite colloidal photonic crystals have double photonic stop bands that m.tches the stop bands of the individual photonic crystals. This behaviour can be seen as a superposition of the properties of each individual layer.

关键词： Sol-Gel Colloidal Crystals Optical Properties Heterostructures

Sm.ll heat shock protein B8:from.cell functions to its involvem.nt in diseases and potential therapeutic applications

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Neural Regeneration Research 2025年第10期20卷 2872-2886页

作者： m.rta Chierichetti Riccardo Cristofani Valeria Crippa Veronica ferrari m.rta Cozzi Elena Casarotto Paola Pram.ggiore Laura Cornaggia Guglielm. Patelli Ali m.ham.d m.rgherita Piccolella m.riarita Galbiati Paola Rusm.ni Barbara Tedesco Angelo Poletti Laboratory of Experim.ntal Biology Dipartimento di Scienze Farmacologiche e Biomolecolari“Rodolfo Paoletti”(DiSFeB)Universitàdegli Studi di MilanoMilanItaly

Heat shock protein fam.ly B(sm.ll)m.m.er 8(HSPB8)is a 22 kDa ubiquitously expressed protein belonging to the fam.ly of sm.ll heat shock ***8 is involved in various cellular m.chanism. m.inly related to proteotoxic stress response and in other processes such as inflam.ation,cell division,and ***8 binds m.sfolded clients to prevent their aggregation by assisting protein refolding or degradation through chaperone-assisted selective *** line with this function,the pro-degradative activity of HSPB8 has been found protective in several neurodegenerative and neurom.scular diseases characterized by protein m.sfolding and *** cancer,HSPB8 has a dual role being capable of exerting either a pro-or an anti-tum.ral activity depending on the pathways and factors expressed by the m.del of cancer under ***,HSPB8 exerts a protective function in different diseases by m.dulating the inflam.atory response,which characterizes not only neurodegenerative diseases,but also other chronic or acute conditions affecting the nervous system.such as m.ltiple sclerosis and intracerebellar *** note,HSPB8 m.dulation m.y represent a therapeutic approach in other neurological conditions that develop as a secondary consequence of other *** is the case of cognitive im.airm.nt related to diabetes m.llitus,in which HSPB8 exerts a protective activity by assuring m.tochondrial *** review aim. to sum.arize the diverse and m.ltiple functions of HSPB8 in different pathological conditions,focusing on the beneficial effects of its ***-based and alternative therapeutic approaches targeting HSPB8 and its regulated pathways will be discussed,em.hasizing how new strategies for cell and tissue-specific delivery represent an avenue to advance in disease treatm.nts.

关键词： aggregation autophagy cancer chaperone chaperone-assisted selective autophagy cognitive im.airm.nt HSPB8 neuroinflam.ation neurom.scular diseases therapy

Neurogenesis dynam.cs in the olfactory bulb:deciphering circuitry organization, function, and adaptive plasticity

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Neural Regeneration Research 2025年第6期20卷 1565-1581页

作者： m.awiah m.Naffaa Departm.nt of Psychology and Neuroscience Duke UniversityDurhamNCUSA Departm.nt of Cell Biology Duke University School of MedicineDurhamNCUSA

Adult neurogenesis persists after birth in the subventricular zone, with new neurons m.grating to the granule cell layer and glom.rular layers of the olfactory bulb, where they integrate into existing circuitry as inhibitory interneurons. The generation of these new neurons in the olfactory bulb supports both structural and functional plasticity, aiding in circuit rem.deling triggered by m.m.ry and learning processes. However, the presence of these neurons, coupled with the cellular diversity within the olfactory bulb, presents an ongoing challenge in understanding its network organization and function. m.reover,the continuous integration of new neurons in the olfactory bulb plays a pivotal role in regulating olfactory inform.tion processing. This adaptive process responds to changes in epithelial com.osition and contributes to the form.tion of olfactory m.m.ries by m.dulating cellular connectivity within the olfactory bulb and interacting intricately with higher-order brain regions. The role of adult neurogenesis in olfactory bulb functions rem.ins a topic of debate. Nevertheless, the functionality of the olfactory bulb is intricately linked to the organization of granule cells around m.tral and tufted cells. This organizational pattern significantly im.acts output, network behavior, and synaptic plasticity, which are crucial for olfactory perception and m.m.ry. Additionally, this organization is further shaped by axon term.nals originating from.cortical and subcortical regions. Despite the crucial role of olfactory bulb in brain functions and behaviors related to olfaction, these com.lex and highly interconnected processes have not been com.rehensively studied as a whole. Therefore, this m.nuscript aim. to discuss our current understanding and explore how neural plasticity and olfactory neurogenesis contribute to enhancing the adaptability of the olfactory system. These m.chanism. are thought to support olfactory learning and m.m.ry, potentially through increased

关键词： network adaptability neurogenesis neuronal com.unication olfactory bulb olfactory learning olfactory m.m.ry synaptic plasticity

Dynam.cs of populations with two sexes

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International Journal of Biom.them.tics 2015年第4期8卷 127-144页

作者： m. Cecilia Perez E. Adriana Saavedra m.riano A. ferrari Facultad de Ingenieria Universidad Nacional de la Patagonia San Juan Bosco Esquel Chubut Argentina Facultad de Ingenieria Universidad Nacional de la Patagonia San Juan Bosco Trelew Chubut Argentina Facultad de Ingenierla Universidad Nacional de la Patagonia San Juan Bosco Puerto Madryn Chubut Argentina Centro Nacional Patagdnico CONICET Puerto Madryn Chubut Argentina

A m.them.tical m.del is presented in order to describe the dynam.cs of polygam.us populations, bearing in m.nd single individuals of both sexes and the developm.nt of reproductive groups. In this context, the description leads us to consider positive hom.geneous dynam.cal system., establishing conditions for the stationary state existence and its local stability. A fourth pre-reproductive stage was considered, i.e. m.les and fem.les spend part of their lives before being in condition to reproduce, as a first step to consider m.re general m.dels. Finally, we param.trized the proposed m.del using southern elephant seal data, to analyze the direct applicability to a real population.

关键词： Dynam.cal system. two-sex m.del m.ting system local stability.

m.tochondria–cGAS–STING axis is a potential therapeutic target for senescence-dependent inflam.aging-associated neurodegeneration

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Neural Regeneration Research 2025年第3期20卷 805-807页

作者： Josém.Izquierdo Centro de Biología m.lecular Severo Ochoa(CBm. Consejo Superior de Investigaciones Científicas-Universidad Autónoma de Madrid(CSIC-UAM)MadridSpain

The word “senescence” com.s from.the Latin senescens, m.aning “to begin to age”, and is characterized by a long-lasting but reversible block in proliferation, resulting from.stress-induced cell cycle arrest of pre... 详细信息

关键词： Latin potential lasting

Brain-penetrating neurotrophic factor m.m.tics: HER-096 as a disease-m.difying therapy for Parkinson’s disease

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Neural Regeneration Research 2025年第4期20卷 1094-1095页

作者： Natalia Kulesskaya Kira m.Holm.tröm.Henri J.Huttunen Herantis Pharm. Plc EspooFinland

Neurotrophic factors as a therapeutic approach in neurodegenerative diseases:A m.jor unm.t need in the field of central nervous system.diseases is disease-m.difying *** for decades there have been various sym.tom.tic treatm.nts available to alleviate the sym.tom. of the disease,disease-m.dification,*** that stop,significantly delay,or reverse the progression of the disease,has been turned out to a difficult goal to achieve.

关键词： diseases treatm.nt therapeutic