Search Results - (Author, Cooperation:E. Molinari)
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1Latest Papers from Table of Contents or Articles in PressF. Pepe ; A. C. Cameron ; D. W. Latham ; E. Molinari ; S. Udry ; A. S. Bonomo ; L. A. Buchhave ; D. Charbonneau ; R. Cosentino ; C. D. Dressing ; X. Dumusque ; P. Figueira ; A. F. Fiorenzano ; S. Gettel ; A. Harutyunyan ; R. D. Haywood ; K. Horne ; M. Lopez-Morales ; C. Lovis ; L. Malavolta ; M. Mayor ; G. Micela ; F. Motalebi ; V. Nascimbeni ; D. Phillips ; G. Piotto ; D. Pollacco ; D. Queloz ; K. Rice ; D. Sasselov ; D. Segransan ; A. Sozzetti ; A. Szentgyorgyi ; C. A. Watson
Nature Publishing Group (NPG)
Published 2013Staff ViewPublication Date: 2013-11-01Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsPublished by: -
2Latest Papers from Table of Contents or Articles in PressS. M. Falke ; C. A. Rozzi ; D. Brida ; M. Maiuri ; M. Amato ; E. Sommer ; A. De Sio ; A. Rubio ; G. Cerullo ; E. Molinari ; C. Lienau
American Association for the Advancement of Science (AAAS)
Published 2014Staff ViewPublication Date: 2014-05-31Publisher: American Association for the Advancement of Science (AAAS)Print ISSN: 0036-8075Electronic ISSN: 1095-9203Topics: BiologyChemistry and PharmacologyComputer ScienceMedicineNatural Sciences in GeneralPhysicsPublished by: -
3Latest Papers from Table of Contents or Articles in PressLinehan, M. M., Dickey, T. H., Molinari, E. S., Fitzgerald, M. E., Potapova, O., Iwasaki, A., Pyle, A. M.
American Association for the Advancement of Science (AAAS)
Published 2018Staff ViewPublication Date: 2018-02-22Publisher: American Association for the Advancement of Science (AAAS)Electronic ISSN: 2375-2548Topics: Natural Sciences in GeneralPublished by: -
4Articles: DFG German National LicensesLenzi, M. ; Molinari, E. ; Piciacchia, G. ; Sessa, V. ; Terranova, M. L.
College Park, Md. : American Institute of Physics (AIP)
Published 1988Staff ViewISSN: 1089-7690Source: AIP Digital ArchiveTopics: PhysicsChemistry and PharmacologyType of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesGoldoni, G. ; Rossi, F. ; Molinari, E. ; Fasolino, A. ; Rinaldi, R. ; Cingolani, R.
Woodbury, NY : American Institute of Physics (AIP)
Published 1996Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: We present a combined theoretical and experimental study of the anisotropy in the optical absorption of V-shaped quantum wires. By means of realistic band structure calculations for these structures, we show that detailed information on the heavy- and light-hole states can be singled out from the anisotropy spectra independently of the electron confinement, thus allowing accurate valence band spectroscopy. © 1996 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesStaff View
ISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: We present a model calculation or phonon spectra of Si/Ge superlattices along the (001) growth direction. The most relevant result for structural characterization is that interface modes involving the SiGe bonds at the interface are predicted only in the transverse and not in the longitudinal polarization. The detection of such modes between the Si-like and Ge-like optical modes in backscattering Raman spectra from the (001) surface must then be ascribed to interface disorder or alloying.Type of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesAlippi, A. ; Craciun, F. ; Molinari, E.
Woodbury, NY : American Institute of Physics (AIP)
Published 1988Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: The fractional volume dependence of stopbands in piezoelectric periodical composite plates has been studied experimentally by exciting the band-edge resonances. The frequency and symmetry of such modes below the thickness resonance of the plate are successfully interpreted in terms of a theoretical model which provides approximate dispersion curves of the lowest Lamb waves propagating in the composite plate.Type of Medium: Electronic ResourceURL: -
8Articles: DFG German National LicensesStaff View
ISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: The resonances of the first Lamb s0 mode in parallelepiped piezoelectric plates excited by surface electrodes have been measured. Below the first thickness mode, the resonances are found to reproduce the dispersion of s0 in an infinite plate even for plates of small length. Moreover, a significant difference is observed between the behavior of the fundamental and its harmonics, reflecting the different effect of metallization in the two cases.Type of Medium: Electronic ResourceURL: -
9Articles: DFG German National LicensesSorba, L. ; Bratina, G. ; Franciosi, A. ; Tapfer, L. ; Scamarcio, G. ; Spagnolo, V. ; Molinari, E.
Woodbury, NY : American Institute of Physics (AIP)
Published 1992Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: Si-GaAs(001) superlattices have been grown by molecular beam epitaxy. X-ray interference measurements and Raman spectroscopy studies in the acoustic range for (Si)2(GaAs)28 and (Si)3(GaAs)50 superlattice structures demonstrate that pseudomorphic growth conditions were achieved. Raman data in the optical range show large (∼50–70 cm−1) confinement- and strain-induced shifts of the Si-like optical modes.Type of Medium: Electronic ResourceURL: -
10Articles: DFG German National LicensesMolinari, E. ; Polini, R. ; Tomellini, M.
Woodbury, NY : American Institute of Physics (AIP)
Published 1992Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: Well separated particles of diamond have been obtained on Si(100) surface by the hot filament chemical vapor deposition technique after scratching by diamond paste. Consecutive depositions, one at a higher and one at lower temperature, or at different CH4 contents of the gas mixture, together with a kinetic analysis based on the particle size distribution function, allow one to decide about the relative importance of heterogeneous nucleation and of seeding.Type of Medium: Electronic ResourceURL: -
11Articles: DFG German National LicensesGrant, J. ; Menéndez, J. ; Pfeiffer, L. N. ; West, K. W. ; Molinari, E. ; Baroni, S.
Woodbury, NY : American Institute of Physics (AIP)
Published 1991Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: A combined Raman and ab initio lattice dynamical study of ultrathin (GaAs)4(AlAs)4 superlattices, focusing mainly on AlAs-like vibrations, clearly shows that a significant amount of interdiffusion occurs in these samples when grown at conventional molecular-beam epitaxy temperatures between 580 and 640 °C. At these temperatures, growth interruption is found to have little impact on the structural quality of the superlattices.Type of Medium: Electronic ResourceURL: -
12Articles: DFG German National LicensesCalzolari, A. ; Di Felice, R. ; Molinari, E.
Woodbury, NY : American Institute of Physics (AIP)
Published 2002Staff ViewISSN: 1077-3118Source: AIP Digital ArchiveTopics: PhysicsNotes: We present a first-principle investigation of quadruple helix nanowires, consisting of stacked planar hydrogen-bonded guanine tetramers. Our results show that long wires form and are stable in potassium-rich conditions. We present their electronic band structure and discuss the interpretation in terms of effective wide-band-gap semiconductors. The microscopic structural and electronic properties of the guanine quadruple helices make them suitable candidates for molecular nanoelectronics. © 2002 American Institute of Physics.Type of Medium: Electronic ResourceURL: -
13Articles: DFG German National LicensesStaff View
ISSN: 1089-7550Source: AIP Digital ArchiveTopics: PhysicsNotes: The resonance spectrum of composite plates made of alternating piezoelectric ceramic and epoxy elements is studied both theoretically and experimentally in the frequency range below the thickness resonance. The transmissivity of the finite structure to plate modes is calculated, taking into account the effective plate velocities of the two constituent materials and the finite number of elements in the structure. The results are in excellent agreement with the electrically excited acoustical resonances of samples with different geometry and number of elements. In particular, the effects of the finite size on the number and frequency of modes, as well as their selection rules in the given experimental setup, are successfully interpreted. New "surface'' resonances, attributed to the end elements, are observed in the stopbands when the surface elements have lower impedance.Type of Medium: Electronic ResourceURL: -
14Articles: DFG German National LicensesJorquera, B. ; Molinari, E. ; Goicoechea, O. ; Ggarrido, O.
Oxford, UK : Blackwell Publishing Ltd
Published 1979Staff ViewISSN: 1439-0264Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: In order to detect morphological changes and activity of the apical ectodermal ridge of the chike embryo limb bud, a series of “in vitro” and “in ovo” experiments were planned.“In vitro* bioassay: ectodermal covering from stage 21 limb buds were cultured in limb bud extracts and non limb bud extracts. Tissues after culture were examined under optic and electron microscopies.“In ovo” studies: Ectodermal jakets, previously cultured, were recombinated with intact limb bud mesoderm and then grafted onto a host embryo.Limb bud extract was able to maintain the ectodermal ridge and even to regenerate flattened ridges previously cultured in non limb bud extracts. The regenerated ridge did not loose the capacity to induce the growth of distal segments of the limb.The regenerated ridge was only produced at the level of its primitive region.Type of Medium: Electronic ResourceURL: -
15Articles: DFG German National LicensesStaff View
ISSN: 1439-0264Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: Anatomy of the digestive tract and external body development during the embryonic stages of the caprine (Copra, bircus) The purpose of this work has been to establish the pattern of prenatal growth and normal development of the digestive tract and annex glands during goat embryonic stages. 21 embryos with ages ranging from 14 to 34 days (1.69 to 5.90 cm CR) as determined by registering the mating time, were obtained by cesarea. This material was histologically processed to obtain complete serial sections of the stomatodaeum, foregut, midgut, hindgut and cloaca.In this work, it is chronologically described the morphogenesis and histogenesis of the mouth, hypophysis, pharynx and its derivatives, stomach, intestine, liver, pancreas and cloaca. The results obtained establish chronological comparisons with the development of the lamb and gives information on the unitary origin of the gastric compartments in ruminants.Type of Medium: Electronic ResourceURL: -
16Articles: DFG German National LicensesStaff View
ISSN: 1439-0264Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: In vitro studies of lens formation in chicken embryo in the absence of hypoblast and optic vesicle In vitro studies of lens formation in chick embryo have suggested the action of two factors leading the lens induction in the cephalic ectoderm in the absence of optic vesicle: preliminary instructive specific stimulus (homotypic endo-mesoderm) and permissive unspecific stimulus (heterotypic mesenchymes).In order to detect the true capacities of tissues that exert this influence in the cultural condition, series of in vitro experiments were planned.Exclusion experiments: explants including presumptive lens ectoderm were cultured previous to a progressive exclusion of adjacent tissues to trigger lens formation (endoderm, mesoderm and neural tissue), from stage 1 to 7 of Hamburger/Hamilton.Recombinant experiments: Recombinations of caudal epiblast with cephalic hypoblast from blastoderms stages 3, 4 and 5; and recombinations of cardiac mesoderm stage 7 with trunk ectoderm stage 11, were cultured in close association.Lens and lentoids were formed in the presumptive lens ectoderm, even when endoderm, neural tissue and optic vesicle were excluded, but always in presence of subjacent mesoderm. Observation of cephalic epiblast after to be separated mechanically from the underlying tissues showed that the presumptive cardiac mesoderm remains in contact with the epiblast. Beside the cardiac area was capable of forming lens bodies in contact with the trunk ectoderm.It was concluded that the cardiac mesoderm is able to exert a instructive specific stimulus and a permissive unspecific stimulus during in vitro lens formation.Type of Medium: Electronic ResourceURL: -
17Articles: DFG German National LicensesStaff View
ISSN: 1439-0264Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: Intrauterine developmental stages of the gastric compartments of the caprine (Capra hircus)A chronological and systematic scheme for intrauterine development stages of the composed stomach of caprine is proposed. Twenty one embryos (1.69 cm to 5.90 cm S. C.) and 16 fetuses (5.90 to 35 cm S. C.) for studying morphogenesis, histogenesis and relationships of gastric compartments were used. Six developmental stages were conventionally determined from the most relevant anatomical and histological characteristics.The first four stages are characterized by appearance of the different compartments, their morphological modifications and progressive positional changes until their semi-final form and relations.The two last stages are characterized by histological differentiation of both the reticulum wall and abomasum mucosa. They can also be recognized by observing the volume relationships between rumen and abomasum. Comparative aspects with bovine and ovine intrauterine development are commented together with considerations concerning the unitary origin of the stomach compartments.Type of Medium: Electronic ResourceURL: -
18Articles: DFG German National LicensesStaff View
ISSN: 0301-0104Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: Chemistry and PharmacologyPhysicsType of Medium: Electronic ResourceURL: -
19Articles: DFG German National LicensesNatesan, S. ; Rivera, V. M. ; Molinari, E. ; Gilman, M.
[s.l.] : Macmillan Magazines Ltd.
Published 1997Staff ViewISSN: 1476-4687Source: Nature Archives 1869 - 2009Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsNotes: [Auszug] The introduction of a potent transcriptional activator into eukaryotic cells can paradoxically suppress the transcription of a co-introduced target gene. This so-called ‘squelching’ is thought to result from titration of one or more general transcription factors (GTFs), indicating ...Type of Medium: Electronic ResourceURL: -
20Articles: DFG German National LicensesStaff View
ISSN: 0009-8981Keywords: Accuracy ; Apo A-1 and B methods ; Comparability ; International survey ; Precision ; StandardizationSource: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002Topics: MedicineType of Medium: Electronic ResourceURL: