Un apport excessif de pain augmente sensiblement le risque de surpoids et de maladies cardiométaboliques.
Le but de notre travail est de rechercher des corrélations entre la consommation de pain, les ...paramètres anthropométriques et le risque cardiométabolique.
C’est une étude qui a porté sur 301 patients (193F/108M) d’âge moyen de 37,2 ans±14,7 ans. Tous nos patients ont bénéficié d’une enquête alimentaire basée sur la fréquence de consommation, d’une mesure du poids, de la taille, du tour de taille, de la pression artérielle et calcul du BMI ainsi que d’un interrogatoire à la recherche d’antécédents personnels et/ou familiaux de diabète, d’HTA, de dyslipidémie et de maladie cardiovasculaire.
Un total de 33,7 % des patients consommaient moins 125grammes de pain par jour (G1), 50,3 % entre 125 et 250gr/j (G2) et 16 % plus de 250gr/j (G3). Le BMI moyen et le tour de taille moyen étaient respectivement de 24,6kg/m2 et 86,8cm dans G1 ; 24,8kg/m2 et 86,5cm dans G2 ; 27,3kg/m2 et 92,9cm dans G3. La prévalence du diabète de l’HTA et de la dyslipidémie étaient respectivement de 4,9 %, 10,9 % et 5,9 % dans G1 ; 5,9 %, 15,2 % et 8,6 % dans G2 ; 12,5 %, 20,8 % et 10,4 % dans G3.
Il ressort de ce travail que la consommation de plus de 250gr de pain par jour est associée à une augmentation du risque de surpoids, de diabète, d’HTA et de dyslipidémie.
We consider the two-machine flow-shop serial-batching scheduling problem where the machines have a limited capacity in terms of the number of jobs. Two criteria are considered here. The first ...criterion is the number of batches to be minimized. This criterion reflects situations where processing of any batch induces a fixed cost, which leads to a total cost proportional to the number of batches. The second criterion is the makespan. This model is relevant in different production contexts, especially when considering joint production and inbound delivery scheduling. We study the complexity of the problem and propose two polynomial-time approximation algorithms with a guaranteed performance. The effectiveness of these algorithms is evaluated using numerical experiments. Exact polynomial-time algorithms are also provided for some particular cases.
Display omitted
•Blue crab shells are a rich source of carotenoproteins.•The binary system hexane/isopropanol was the most efficient.•Maceration method and enzymatic pretreatment was the most ...selective process.•HR-ESI-MS identified 23 compounds.•Astaxanthin was the main carotenoid pigment extracted and identified.
Carotenoids, natural pigments, are a group of chemically heterogeneous molecules, present in numerous taxonomical clusters. Because of their various bioactivities, carotenoids are day-by-day applied in numerous fields. The present work aimed to investigate an efficient extraction process of carotenoids from blue crab shells and their identification by HR-ESI-MS technique. In this context, different methods (enzymatic, maceration, Soxhlet, etc.) and solvents (variable polarity index) were tested. Maceration using the binary system hexane/isopropanol (50/50) was found to be the most efficient process, producing high carotenoids content and low total phenolic and soluble protein amounts (p < 0.05). When combined with an enzymatic pretreatment, this procedure was found to be remarkably (p < 0.05) more efficient and selective especially towards astaxanthin (p < 0.05). The HR-ESI-MS identified 23 compounds, depending on the adopted extraction approach. The compounds identified may have potential for applications in food or pharmaceutical industries.
•Self-broadening coefficients have been measured in the ν3 and 2ν3-ν3 bands of CH3Cl.•The rotational dependencies of broadening coefficients were analyzed.•The data are modeled using a second-order ...empirical polynomial.•Broadening coefficients were predicted using the Robert and Bonamy formalism with parabolic and exact trajectory models.•The RBE model is not necessary for calculations of self-broadening of CH3Cl even at low temperature.
High-resolution Fourier Transform spectra have been recorded at room temperature in the frequency region around 13 µm using a high-resolution Fourier transform spectrometer (Bruker IFS 125-HR).
Transitions of both 12CH335Cl and 12CH337Cl isotopologues belonging to the P, Q and R branches of the ν3 and 2ν3-ν3 parallel bands have been analyzed to retrieve self-broadening coefficients using a multispectrum fitting procedure that allowed to fit simultaneously the whole set of the experimental spectra recorded at seven pressures of CH3Cl ranging from 1.02 to 10.24 mbar. Line positions were also derived using a wavenumber calibration performed by the frequencies of OCS transitions.
About 2028 lines with 2 ≤ J ≤ 59 and 2 ≤ K ≤ 13 have been studied. The rotational J and K dependencies of the self-broadening coefficients have been clearly observed and modeled using a second-order empirical polynomial. The average accuracy of the line parameters has been estimated to be about 4 and 5% for the ν3 and 2ν3-ν3 bands, respectively.
Using the Robert and Bonamy formalism with parabolic and exact trajectory models, these coefficients were calculated, showing the predominance of the dipole-dipole interaction. The J and K rotational dependencies are consistent with the measured data. The predicted values confirm that the use of the exact trajectory model does not improve the predicted linewidths for a molecule with a large dipole moment such as CH3Cl.
•Line intensities and pressure broadening coefficients measurement of ro-vibrational absorption transitions of the ν6 band.•Transition dipole moments squared have been determined.•Vibrational ...transition moments, band intensity as well as Herman-Wallis coefficients have been retrieved.•Self-broadening coefficients have been measured and modeled using an empirical polynomial law.
We performed the first systematic measurements of line intensities and pressure broadening coefficients of ro-vibrational absorption transitions of the ν6 perpendicular band of CH335Cl and CH337Cl isotopologues. The spectra were recorded in the spectral region between 920 and 1130 cm−1 with a high-resolution Fourier transform spectrometer. A multi-pressure fitting technique was used to fit a series of seven spectra at pressures of CH3Cl ranging from 1.02 to 10.24 mbar to derive these parameters for about 2132 transitions with 1 ≤ J ≤ 55 and 0 ≤ K ≤ 12. The line intensities were discussed as a function of the rotational quantum numbers, and were used to derive the transition dipole moments squared for each line. The analysis of these moments allows us to derive a consistent set of line intensity parameters such as vibrational transition moments, band intensity as well as Herman-Wallis coefficients. The results were found to be in satisfactory agreement with databases and with low resolution measurements of band intensity.
The rotational dependencies of the self-broadening coefficients have been clearly observed and modeled using an empirical polynomial law. The average accuracies have been estimated to be around 4 and 5% for line intensities and self-broadening coefficients respectively.
•Systematic measurements of O2- and N2-broadening coefficients of ro-vibrational transitions of the ν3 and 2ν3-ν3 parallel bands of 12CH335Cl and 12CH337Cl isotopes have been determined using a high ...resolution Fourier transform spectrometer.•Study of the rotational dependences of large sets of measurements of O2- and N2-broadening coefficients has been performed using empirical polynomial expansions.•Measured and empirical values of Air-broadenings coefficients are deduced for the ν3 fundamental band and for the 2ν3-ν3 hot band.
In this paper, we report high-resolution measurements of oxygen and nitrogen pressure-broadening coefficients for ro-vibrational transitions in the ν3 and 2ν3-ν3 bands of methyl chloride (CH335Cl and CH337Cl). We present the first high-resolution measurement of oxygen broadening coefficients for the CH3Cl, along with an extensive determination of the nitrogen broadening coefficients in the ν3 band which complements the measurements made by diode laser spectrometer in previous works. For the 2ν3-ν3 band, the oxygen and nitrogen broadening coefficients are measured here for the first time. The results have been obtained by analyzing fourteen spectra with a mono-spectrum non-linear least squares fitting of Voigt profile using data recorded at 295 K at the AILES beamline of the SOLEIL Synchrotron facility using a Bruker IF125HR Fourier transform spectrometer. Broadening coefficients of 1793 and 1732 lines in both bands of both isotopes of CH3Cl for O2 and N2 buffer gases respectively have been retrieved. The rotational dependences of these coefficients have been modeled using an empirical model, which reproduces the measured data with a difference of about 6 %. Using the measured values of O2- and N2-broadenings, we derived the Air-broadening coefficients. Finally, comparisons with previous works are performed.
•Systematic measurements of line intensities of ro-vibrational absorption transitions of the ν3 and 2ν3-ν3 parallel bands of 12CH335Cl and 12CH337Cl isotopes were performed.•The rotational ...dependencies of line intensities were analyzed.•The square of the transition dipole moment for each line has been determined.•The vibrational transition moments, band intensities as well as Herman-Wallis coefficients for both bands are retrieved.
We performed the systematic measurements of line intensities of ro-vibrational absorption transitions of the ν3 and 2ν3-ν3 parallel bands of 12CH335Cl and 12CH337Cl isotopes. The spectra were recorded in the spectral region between 650 and 800 cm−1 with a high-resolution Fourier transform spectrometer.
A mono-spectrum fitting technique was used to fit a series of seven spectra at pressures of CH3Cl ranging from 1.02 to 10.24 mbar to retrieve line intensities of 2385 transitions of the two isotopic species. The measured line intensities are discussed in relation to rotational quantum numbers, and used to derive the square of the transition dipole moments for each line. The analysis of these moments allows us to derive a consistent set of line intensity parameters, such as vibrational transition moments, band intensities as well as Herman-Wallis coefficients for both bands. The results of the ν3 band are in satisfactory agreement with previous works and present databases, but a larger discrepancy (≈ 30%) is observed for the 2ν3-ν3 hot band.
•Line-by-line measurements of O2- and N2-broadening and shift coefficients in the v6 band of the two isotopes of CH3Cl have been performed with a high resolution fourier transform ...spectrometer.•Modeling of the rotational dependences of the O2- and N2-broadening has been performed using the empirical model of starikov.•Air-broadening coefficients are retrieved.•Prediction of the O2- and N2-broadenings using the robert and bonamy formalism.
N2- and O2-broadening coefficients were measured at room temperature for 2914 ro-vibrational lines of methyl chloride in the region from 920 to 1140 cm−1 corresponding to the ν6 band, using a high-resolution Fourier transform spectrometer and a mono-spectrum non-linear least squares fitting of Voigt profiles. The spectra were recorded at the AILES beamline of the SOLEIL Synchrotron facility at various mixtures of CH3Cl with N2 or O2 gas. Broadening coefficients were retrieved for the two isotopes of CH3Cl from which we derived the air-broadenings. The rotational dependences of these coefficients were analyzed and modeled first using an empirical model, which reproduces the measurements within of about 5%. Pressure-induced shifts are also measured for about 375 and 418 transitions for O2- and N2-perturbers respectively with no obvious rotational dependence. The average absolute accuracies of the measurements are estimated to be about 7 and 17% for broadening and shift coefficients respectively. Comparisons are performed with previous measurements and next with semi-classical predictions achieved in this work. The entire set of results is given as Supplementary data Table for a use in spectroscopic databases and atmospheric detection.
PDF
