Continuous-wave cavity ringdown spectroscopy of the 8 nu polyad of water in the 25 195-25 340 cm(-1) range

State-of-the-art experiments and calculations are used to record and assign the data obtained in the weakly absorbing blue energy region of the H2O spectrum. Continuous-wave cavity ringdown absorption spectroscopy with Doppler resolution is used to probe the range from 25 195 to 25 470 cm(-1) with an absorption sensitivity of similar to 1 parts per 10(9) (ppb)/cm. 62 lines of the polyad nu(OH)=8 are reported, of which 43 are assigned using variational nuclear calculations. The study includes absorption line intensities (in the range of 10(-28)-10(-26) cm/molecule) for all lines and self-broadening pressure coefficient for a few lines. The newly obtained energy levels are also reported. (c) 2005 American Institute of Physics

Smart battery pack for electric vehicles based on active balancing with wireless communication feedback

In this paper, the concept of smart battery pack is introduced. The smart battery pack is based on wireless feedback from individual battery cells and is capable to be applied to electric vehicle applications. The proposed solution increases the usable capacity and prolongs the life cycle of the batteries by directly integrating the battery management system in the battery pack. The battery cells are connected through half-bridge chopper circuits, which allow either the insertion or the bypass of a single cell depending on the current states of charge. This consequently leads to the balancing of the whole pack during both the typical charging and discharging time of an electric vehicle and enables the fault-tolerant operation of the pack. A wireless feedback for implementing the balancing method is proposed. This solution reduces the need for cabling and simplifies the assembling of the battery pack, making also possible a direct off-board diagnosis. The paper validates the proposed smart battery pack and the wireless feedback through simulations and experimental results by adopting a battery cell emulator

Cavity Enhanced Optical Vernier Spectroscopy, Broad Band, High Resolution, High Sensitivity

A femtosecond frequency comb provides a vast number of equidistantly spaced narrow band laser modes that can be simultaneously tuned and frequency calibrated with 15 digits accuracy. Our Vernier spectrometer utilizes all of theses modes in a massively parallel manner to rapidly record both absorption and dispersion spectra with a sensitivity that is provided by a high finesse broad band optical resonator and a resolution that is only limited by the frequency comb line width while keeping the required setup simple.Comment: 11 pages, 3 figures, submitted to PR

Satisficing data envelopment analysis: a Bayesian approach for peer mining in the banking sector

YesOver the past few decades, the banking sectors in Latin America have undergone rapid structural changes to improve the efficiency and resilience of their financial systems. The up-to-date literature shows that all the research studies conducted to analyze the above-mentioned efficiency are based on a deterministic data envelopment analysis (DEA) model or econometric frontier approach. Nevertheless, the deterministic DEA model suffers from a possible lack of statistical power, especially in a small sample. As such, the current research paper develops the technique of satisficing DEA to examine the still less explored case of Peru. We propose a Satisficing DEA model applied to 14 banks operating in Peru to evaluate the bank-level efficiency under a stochastic environment, which is free from any theoretical distributional assumption. The proposed model does not only report the bank efficiency, but also proposes a new framework for peer mining based on the Bayesian analysis and potential improvements with the bias-corrected and accelerated confidence interval. Our study is the first of its kind in the literature to perform a peer analysis based on a probabilistic approach

Cinical – evolutional aspects of acute coronary syndrome without ST segment elevation in diabetics

Congresul III al Medicilor de Familie din Republica Moldova, 17–18 mai, 2012, Chişinău, Republica Moldova, Conferinţa Naţională „Maladii bronhoobstructive la copii”, consacrată profesorului universitar, doctor habilitat Victor Gheţeul, 27 aprilie, Chişinău, Republica MoldovaScopul lucrării. Studierea particularităţilor clinico-evolutive ale sindromului coronarian acut fără elevarea segmentului ST la diabetici. Material şi metode de cercetare Pentru realizarea obiectivelor propuse am efectuat un studiu retrospectiv al fişelor de observaţie a 100 de pacienţi deserviţi de Asistenţa Medicală de Urgenţa din mun. Chişinău, în perioada anului 2009, cu diagnosticul stabilit la etapa de prespital Sindrom Coronarian Acut fără elevarea segmentului ST. Pacienţii evaluaţi au fost repartizaţi în 2 loturi definite în dependenţă de prezenţa sau absenţa diabetului zaharat. Lotul I – 50 de pacienţi cu sindrom coronarian acut fără elevarea segmentului ST; Lotul II – 50 de pacienţi cu sindrom coronarian acut fără elevarea segmentului ST, asociat cu diabetul zaharat. Toţi pacienţii au fost cercetaţi şi analizaţi în baza unei fişe de monitorizare standardizată, care a inclus studierea datelor anamnezice, clinice şi paraclinice. Rezultate proprii şi discuţii Incidenţa SCA fără elevarea segmentului ST în populaţia matură a mun. Chişinău a fost de 3 073 (12%), din totalul SCA, dintre care 1 783 de pacienţi cu diabet zaharat. Din numărul total de 100 de pacienţi, 62 de persoane au fost bărbaţi, ceea ce constituie (62%) şi 38 femei (38%). Distribuţia pacienţilor după sexe în loturile studiate, au relevat următoarele date: în lotul I au fost 34 de bărbaţi (68%) şi 16 femei (32%), iar în lotul II – 28 de bărbaţi (56%) şi 22 de femei (44%). Distribuţia după sexe a evidenţiat o dominanţă a bărbaţilor în ambele grupuri de studiu. Vârsta pacienţilor, incluşi în studiu, a fost cuprinsă între 20 şi 98 de ani. Vârsta medie în lotul I a fost 60,44 ani, iar în lotul II – 54,92 ani. Grupa de vârstă cel mai frecvent întîlnită în lotul I a fost cuprinsă între 51-60 de ani, urmată de grupul de vârstă 61-70 de ani. Cea mai mică frecvenţă a bolii a fost întâlnită la pacienţii din grupul de vârstă < 40 de ani. Concluzii Din numărul total de pacienţi cu sindrom coronarian acut fără supradenivelarea segmentului ST, au predominat bărbaţii, iar femeile diabetice au dezvoltat mai frecvent evenimente coronariene acute decât cele nondiabetice. Categoria socială cea mai afectată este reprezentată de pacienţii de vârsta a treia. Particularităţile clinico-evolutive la pacienţii cu sindrom coronarian acut fără elevarea segmentului ST, asociat cu diabet zaharat, implică manifestări clinice atipice şi dezvoltarea frecventă a complicaţiilor (disritmii, şoc cardiogen, edem pulmonar acut cardiogen, trombembolia arterei pulmonare, anevrism). În cazul pacienţilor cu sindrom coronarian acut fără elevarea segmentului ST, asociat cu diabet, comorbidităţi ca HTA, AVC, IM vechi, dislipidemii au fost depistate într-un număr mai mare

XUV Frequency Combs via Femtosecond Enhancement Cavities

We review the current state of tabletop extreme ultraviolet (XUV) sources based on high harmonic generation (HHG) in femtosecond enhancement cavities (fsEC). Recent developments have enabled generation of high photon flux (1014 photons/sec) in the XUV, at high repetition rates (>50 MHz) and spanning the spectral region from 40 nm - 120 nm. This level of performance has enabled precision spectroscopy with XUV frequency combs and promises further applications in XUV spectroscopic and photoemission studies. We discuss the theory of operation and experimental details of the fsEC and XUV generation based on HHG, including current technical challenges to increasing the photon flux and maximum photon energy produced by this type of system. Current and future applications for these sources are also discussed.Comment: invited review article, 38 page

Combined exome and whole-genome sequencing identifies mutations in ARMC4 as a cause of primary ciliary dyskinesia with defects in the outer dynein arm

Primary ciliary dyskinesia (PCD) is a rare, genetically heterogeneous ciliopathy disorder affecting cilia and sperm motility. A range of ultrastructural defects of the axoneme underlie the disease, which is characterised by chronic respiratory symptoms and obstructive lung disease, infertility and body axis laterality defects. We applied a next-generation sequencing approach to identify the gene responsible for this phenotype in two consanguineous families

A calibration method for broad-bandwidth cavity enhanced absorption spectroscopy performed with supercontinuum radiation

An efficient calibration method has been developed for broad-bandwidth cavity enhanced absorption spectroscopy. The calibration is performed using phase shift cavity ring-down spectroscopy, which is conveniently implemented through use of an acousto-optic tunable filter (AOTF). The AOTF permits a narrowband portion of the SC spectrum to be scanned over the full high-reflectivity bandwidth of the cavity mirrors. After calibration the AOTF is switched off and broad-bandwidth CEAS can be performed with the same light source without any loss of alignment to the set-up. We demonstrate the merits of the method by probing transitions of oxygen molecules O-2 and collisional pairs of oxygen molecules (O-2)(2) in the visible spectral range

Structure functions for the three nucleon system

The spectral functions and light-cone momentum distributions of protons and neutrons in 3He and 3H are given in terms of the three-nucleon wave function for realistic nucleon-nucleon interactions. To reduce computational complexity, separable expansions are employed for the nucleon-nucleon potentials. The results for the light-cone momentum distributions suggest that they are not very sensitive to the details of the two-body interaction, as long as it has reasonable short-range repulsion. The unpolarised and polarised structure functions are examined for both 3He and 3H in order to test the usefulness of 3He as a neutron target. It is found that the measurement of the spin structure function of polarised 3H would provide a very clear test of the predicted change in the polarised parton distributions of a bound proton.Comment: 30 pages, REVTeX, 11 figure