Search results for "Citation"

Enhanced network activity despite clinical recovery in experimental neuroinflammation using two-photon calcium imaging

2014

Determining cantilever stiffness from thermal noise

2013

We critically discuss the extraction of intrinsic cantilever properties, namely eigenfrequency fn, quality factor Qn and specifically the stiffness kn of the nth cantilever oscillation mode from thermal noise by an analysis of the power spectral density of displacement fluctuations of the cantilever in contact with a thermal bath. The practical applicability of this approach is demonstrated for several cantilevers with eigenfrequencies ranging from 50 kHz to 2 MHz. As such an analysis requires a sophisticated spectral analysis, we introduce a new method to determine kn from a spectral analysis of the demodulated oscillation signal of the excited cantilever that can be performed in the frequ…

Educational innovation in basic and advanced cardiopulmonary resuscitation in pediatrics and neonatology in a realistic context

2018

Introducción: El profesor universitario debe transmitir las habilidades técnicas y cognitivas sobre reanimación cardiopulmonar (RCP) en Pediatría con el método más efectivo. Metodología: 17 clases prácticas de Resucitación Cardiopulmonar de 2 horas para 225 alumnos. Se impartió el 2º curso de Enfermería Pediátrica de la Universidad de Valencia. Cada clase consistió en 3 casos clínicos en los que participaron 15 estudiantes y 3 monitores. El conocimiento de los estudiantes se evaluó con prueba-repetición de 11 preguntas y la satisfacción después de la simulación (cuestionario de 20 preguntas). Resultados: la media de satisfacción de los alumnos fue de 8,62 sobre 10 puntos. La evaluación de l…

Clinical simulation: innovative educational project in basic cardiopulmonary resuscitation and advanced in pediatrics and neonatology

2019

[EN] Introduction: Nowadays, clinical simulation could be a key link in the teaching and learning of different procedures. Methodology: It is a quasi-experimental study, using three evaluation questionnaires as a method to collect the respective information to the acquisition of competences and satisfaction of the students regarding a theoretical-practical training on pediatric and neonatal CPR for students of 2nd year Nursing the University of Valencia. To this end, 17 RCP laboratories formed by 228 students were carried out. Results: The students gave a great reception to this project, giving it a score of 8.82 (SD 0.42) out of 10. The most valued item (by the students) was that in which …

Damming an electronic energy reservoir: ion-regulated electronic energy shuttling in a [2]rotaxane

2021

We demonstrate the first example of bidirectional reversible electronic energy transfer (REET) between the mechanically bonded components of a rotaxane. Our prototypical system was designed such that photoexcitation of a chromophore in the axle results in temporary storage of electronic energy in a quasi-isoenergetic “reservoir” chromophore in the macrocycle. Over time, the emissive state of the axle is repopulated from this reservoir, resulting in long-lived, delayed luminescence. Importantly, we show that cation binding in the cavity formed by the mechanical bond perturbs the axle chromophore energy levels, modulating the REET process, and ultimately providing a luminescence read-out of c…

Scientometrics analysis of research activity and collaboration patterns in Chagas cardiomyopathy.

2018

Background Chagas cardiomyopathy is a serious and common complication of Chagas disease. Methods Through bibliometric and Social Network Analysis, we examined patterns of research on Chagas cardiomyopathy, identifying the main countries, authors, research clusters, and topics addressed; and measuring the contribution of different countries. Results We found 1932 documents on Chagas cardiomyopathy in the MEDLINE database. The most common document type was ‘journal article’, accounting for 79.6% of the total (n = 1538), followed by ‘review’ (n = 217, 11.2%). The number of published records increased from 156 in 1980–1984 to 311 in 2010–2014. Only 2.5% were clinical trials. Brazil and the USA …

Infrared study of the MoO3 doping efficiency in 4,4′-bis(N-carbazolyl)-1,1′-biphenyl (CBP)

2013

AbstractElectrochemical doping produces clear changes in the vibrational spectra of organic semiconductors as we show here for the system molybdenum oxide (MoO3) doped into the charge transport material 4,4′-bis(N-carbazolyl)-1,1′-biphenyl (CBP). Based on density-functional theory (DFT) calculations of vibrational spectra, the new spectral features can be attributed to the CBP cation that forms as a result of electron transfer from CBP to MoO3. The intensity of the new vibrational lines is a direct measure for the probability of charge transfer. MoO3 agglomerating within the CBP matrix limits the active interface area between the two species. The appearance of a broad electronic transition …

The spectra of mixed $^3$He-$^4$He droplets

2005

The diffusion Monte Carlo technique is used to calculate and analyze the excitation spectrum of $^3$He atoms bound to a cluster of $^4$He atoms, by using a previously determined optimum filling of single-fermion orbits with well defined orbital angular momentum $L$, spin $S$ and parity quantum numbers. The study concentrates on the energies and shapes of the three kinds of states for which the fermionic part of the wave function is a single Slater determinant: maximum $L$ or maximum $S$ states within a given orbit, and fully polarized clusters. The picture that emerges is that of systems with strong shell effects whose binding and excitation energies are essentially determined over configur…

Complex Ground-State and Excitation Energies in Coupled-Cluster Theory

2021

Since in coupled-cluster (CC) theory ground-state and excitation energies are eigenvalues of a non-Hermitian matrix, these energies can in principle take on complex values. In this paper we discuss the appearance of complex energy values in CC calculations from a mathematical perspective. We analyze the behaviour of the eigenvalues of Hermitian matrices that are perturbed (in a non-Hermitian manner) by a real parameter. Based on these results we show that for CC calculations with real-valued Hamiltonian matrices the ground-state energy generally takes a real value. Furthermore, we show that in the case of real-valued Hamiltonian matrices complex excitation energies only occur in the context…

Fine-structure mixing collisions of Rb(52D) excited in a two-photon transition using external-cavity cw diode laser

1999

We present an experimental study of fine structure (fs)- mixing in the 5 2 D state of Rb, and details of construction and performance of an external cavity cw diode laser, developed to provide a light source at 778 nm for two-photon excitation of Rb(5 2 D). Cross section for the fs-mixing Rb(5 2 D 5/2 ) yields Rb(5 2 D 3/2 ) in collisions with the ground state Rb(5 2 S 1/2 ) atoms was found to be 5.8 +/- 1.9 (DOT) 10 -14 cm 2 .