196,380 research outputs found
Infrared Optoacoustic Spectroscopy Of 13cd3od Around 9p Co2 Laser Lines
No full textIn this work we present the results of an investigation about Doppler limited infrared absorbing transitions of the in-plane methyl-rocking and the asymmetric methyl deformation modes of 13CD3OD by means of optoacoustic detection. This is an alternative and attractive technique to be applied to this methanol isotopromer, in comparison to Fourier transform spectroscopy. In fact the contamination problem associated with the fast exchange of OD by OH in the molecule limits the use of the Fourier transform technique. Using a waveguide CO2 laser of 290 MHz tunability on each line we were able to observe 20 IR absorptions, most of them of large offset. The data will be useful in theoretical analysis of this molecule, as well as in the generation of FIR laser radiation in optically pumped molecular laser.214621632Borden, A., Baker, F.E., (1939) J.Chem Phys., 6, p. 553Koehler, J.S., Dennison, D.M., (1940) Phys. Rev., 57, p. 1006Pereira, D., Moraes, J.C.S., Telles, E.M., Scalabrin, A., Strumia, F., Moretti, A., Carelli, G., Massa, C.A., (1994) Int. J. of Infrared and Millimeter Waves, 15 (1), p. 1Moruzzi, G., Moraes, J.C.S., Strumia, F., (1992) Int. J. of Infrared and Millimeter Waves, 13 (9), p. 1269Henkel, C., Jacq, T., Nuersberger, R., Menten, K.M., Steppe, H., (1987) Astron. Astrophys., 188 (1), pp. L1Sutton, E.C., Herbst, E., (1988) Astrophys. J., 333 (1), p. 359Moruzzi, G., Strumia, F., Carnesecchi, P., Mukhopadyay, I., Lees, R.M., Johns, J.W.C., (1989) Infrared Phys., 29 (2), p. 583Moruzzi, G., Riminucchi, P., Strumia, F., Carli, B., Carlotti, M., Lees, R.M., Mukhopadyay, I., Winnewisser, M., (1990) J.Mol. Spectrosc., 144 (1), p. 139Moraes, J.C.S., Scalabrin, A., Pereira, D., Dilonardo, G., Fusina, L., (1991) Infrared Phys., 31 (4), p. 365Moraes, J.C.S., Scalabrin, A., Pereira, D., Carelli, G., Ioli, N., Moretti, Strumia, F., (1992) Appl. Phys. B, 54 (1), p. 24Mukhopadyay, I., Lees, R.M., Llewis-Bevan, W., Johns, J.W., (1995) J. Chem. Phys., 102 (16), p. 6444Moraes, J.C.S., Pereira, D., Scalabrin, A., Moruzzi, G., Strumia, F., Winnewisser, B.P., Winnewisser, M., Gupta, P.K., (1995) J. Mol. Spectrosc., 174 (1), p. 177Moraes, J.C.S., Carelli, G., Moretti, A., Moruzzi, G., Strumia, F., (1996) J.Mol. Spectrosc. J. Mol. Spectrosc., 177 (2), p. 302Carelli, G., Ioli, N., Moretti, A., Moruzzi, G., Strumia, F., Zhao, S., Lees, R.M., Goulding, R.R., (1995) Infrared Phys.Tech., 35 (6), p. 743Carelli, G., Moretti, A., Strumia, F., Zhao, S., Lees, R.M., (1996) J. Mol. Spectrosc., 177 (1), p. 79Cruz, F.C., Scalabrin, A., Pereira, D., Vazquez, P.A.M., Hase, Y., Strumia, F., (1992) J. Mol. Spectrosc., 156 (1), p. 22Viscovini, R.C., Scalabrin, A., Pereira, D., (1996) Int. J. of Infrared and Millimeter Waves, 17 (11), p. 1821Carelli, G., Ioli, N., Messina, A., Moretti, A., Strumia, F., Telles, E.M., Moraes, J.C.S., Pereira, D., (1991) Infrared Phys., 31 (4), p. 323Telles, E.M., Moraes, J.C.S., Scalabrin, A., Pereira, D., Carelli, G., Ioli, N., Moretti, A., Strumia, F., (1994) IEEE J. Quantum Electron, QE30 (12), p. 2946Moraes, J.C.S., Telles, E.M., Cruz, F.C., Scalabrin, A., Pereira, D., Carelli, G., Ioli, N., Strumia, F., (1992) Int. J. Infrared and Millimeter Waves, 13 (11), p. 1801Viscovini, R.C., Scalabrin, A., Pereira, D., (1997) IEEE J. Quantum Electron, QE33 (6), p. 916Viscovini, R.C., Telles, E.M., Scalabrin, A., Pereira, D., (1997) Appl. Phys. B, 65 (1), p. 33Viscovini, R.C., Telles, E.M., Scalabrin, A., Pereira, D., (1999) IEEE J. Quantum Electron, QE35 (11), p. 1613Viscovini, R.C., Cruz, F.C., Moraes, J.C.S., Scalabrin, A., Pereira, D., (1999) Int. J. Infrared and Millimeter Waves, 20 (2), p. 193Telles, E.M., Moraes, J.C.S., Scalabrin, A., Pereira, D., Moretti, A., Strumia, F., (1991) Appl. Phys. B, 52 (1), p. 36Pereira, D., Scalabrin, A., (1992) Infrared Phys., 33 (6), p. 549Carelli, G., Ioli, N., Moretti, A., Pereira, D., Strumia, F., (1987) Appl. Phys. B, 44 (2), p. 11
Vibrational And Rotational Spectroscopy Of 13cd3od
No full textWe have used Fourier Transform spectral data on the C-O stretching mode of 13CD3OD in order to perform a vibro-rotational analysis for this molecule. We have estimated a few molecular parameters of the ground and C-O stretching vibrational modes. Based on these parameters, and by using the Kwan-Dennison model, we propose assignments for a number of far-infrared laser transitions of 13CD3OD.202193201Moruzzi, G., Winnewisser, B.P., Winnewiesser, M., Mukhopadhyay, I., Strumia, F., (1995) Microwave - Infrared and Laser Transistions of Methanol., , CRC Press, IncMoraes, J.C.S., Pereira, D., Scalabrin, A., Moruzzi, G., Strumia, F., Winnewisser, B.P., Winnewiesser, M., Gupta, P.K., (1995) J. Mol. Spectrosc., 174, p. 177Lees, R.M., Mukhopadhyay, I., Predoi, A., Lewisbevan, W., Johns, J.W.C., (1996) J. Chem. Phys., 105, p. 3406Xu, L.-H., (1994) J. Mol. Spectrosc., 164, p. 287Xu, L.-H., Lees, R.M., Mukhopadhyay, I., Johns, J.W.C., Moruzzi, G., (1993) J. Mol. Spectrosc., 157, p. 447Kwan, Y.Y., Dennison, D.M., (1972) J. Mol. Spectrosc., 43, p. 291Moruzzi, G., Xu, L.-H., Lees, R.M., Winnewisser, B.P., Winnewiesser, M., (1994) J. Mol. Spectrosc., 167, p. 156Viscovini, R.C., Scalabrin, A., Pereira, D., (1996) Int. J. Infrared Millimeter Waves, 17, p. 1821Cruz, F.C., Scalabrin, A., Pereira, D., Vazquez, P.A.M., Hase, Y., Strumia, F., (1992) J. Mol. Spectrosc., 156, p. 22Mukhopadhyay, I., (1997) Spectroc. Acta A, 53, p. 979Jackson, M., Sudhakaran, G.R., Gansen, E., (1996) J. Mol. Spectrosc., 176, p. 439Moraes, J.C.S., Scalabrin, A., Pereira, D., Di Leonardo, G., Fusina, L., (1991) Infr. Phys., 31, p. 365Walker, S., Straw, H., (1970) Spectroscopy, , Chapman & Hall, LondonLees, R.M., Baker, J.G., (1968) J. Chem. Phys., 48, p. 5299Lees, R.M., (1972) J. Chem. Phys., 56, p. 5887Viscovini, R.C., Telles, E.M., Scalabrin, A., Pereira, D., (1997) Appl. Phys. B, 65, p. 33Viscovini, R.C., Scalabrin, A., Pereira, D., (1997) IEEE J. Quantum Electron., 33, p. 91
A direct reduction procedure for gas densities determination of R143a from acoustic measurements
No full textInfrared Optoacoustic Spectroscopy Of 13cd3od Around The 10r And 10p Co2 Laser Lines
No full textIn this work we present the results of an investigation about Doppler limited infrared absorbing transitions of the C-O stretching vibrational mode of 13CD3OD by means of optoacoustic detection. This technique is an alternative, more sensitive and of higher resolution than the Fourier transform spectroscopy which is applied to this methanol isotopomer, due to the contamination problem associated with the fast exchange of OD by OH in the molecule. Using a waveguide CO2 laser of 290 MHz tunability on each line we were able to observe 69 absorptions, most of then of large offset. The data will be useful in theoretical analysis of this sample, as well as a guide in the search for new FIR laser lines. © 1996 Plenum Publishing Corporation.171118211838Borden, A., Baker, F.E., (1939) J.Chem Phys., 6, p. 553Koehler, J.S., Dennison, D.M., (1940) Phys. Rev., 57, p. 1006Pereira, D., Moraes, J.C.S., Telles, E.M., Scalabrin, A., Strumia, F., Moretti, A., Carelli, G., Massa, C.A., (1994) Int. J. of Infrared and Millimeter Waves, 15 (1), p. 1Moruzzi, G., Moraes, J.C.S., Strumia, F., (1992) Int. J. of Infrared and Millimeter Waves, 13 (9), p. 1269Henkel, C., Jacq, T., Nuersberger, R., Menten, K.M., Steppe, H., (1987) Astron. Astrophys., 188, pp. L1Sutton, E.C., Herbst, E., (1988) Astrophys. J., 333, p. 359Moruzzi, G., Strumia, F., Carnesecchi, P., Mukhopadyay, I., Lees, R.M., Johns, J.W.C., (1989) Infrared Phys., 29 (2), p. 583Moruzzi, G., Riminucchi, P., Strumia, F., Carli, B., Carlotti, M., Lees, R.M., Mukhopadyay, I., Winnewisser, M., (1990) J.Mol. Spectrosc., 144, p. 139Moraes, J.C.S., Scalabrin, A., Pereira, D., DiLonardo, G., Fusina, L., (1991) Infrared Phys., 31 (4), p. 365Moraes, J.C.S., Scalabrin, A., Pereira, D., Carelli, G., Ioli, N., Moretti, Strumia, F., (1992) Appl. Phys. B, 54, p. 24(1992) Infrared Phys., 33 (2), p. 133Mukhopadyay, I., Lees, R.M., Llewis-Bevan, W., Johns, J.W., (1995) J. Chem. Phys., 102, p. 6444Moraes, J.C.S., Pereira, D., Scalabrin, A., Moruzzi, G., Strumia, F., Winnewisser, B.P., Winnewisser, M., Gupta, P.K., (1995) J. Mol. Spectrosc., 174, p. 177Moraes, J.C.S., Carelli, G., Moretti, A., Moruzzi, G., Strumia, F., J.Mol. Spectrosc., , in pressCarelli, G., Ioli, N., Moretti, A., Moruzzi, G., Strumia, F., Zhao, S., Lees, R.M., Goulding, R.R., (1995) Infrared Phys.Tech., 35, p. 743Carelli, G., Moretti, A., Strumia, F., Zhao, S., Lees, R.M., (1996) J. Mol. Spectrosc., 177, p. 79Cruz, F.C., Scalabrin, A., Pereira, D., Vazquez, P.A.M., Hase, Y., Strumia, F., (1992) J. Mol. Spectrosc., 156, p. 22Carelli, G., Ioli, N., Messina, A., Moretti, A., Strumia, F., Telles, E.M., Moraes, J.C.S., Pereira, D., (1991) Infrared Phys., 31 (4), p. 323Telles, E.M., Moraes, J.C.S., Scalabrin, A., Pereira, D., Carelli, G., Ioli, N., Moretti, A., Strumia, F., (1994) IEEE J. Quantum Electron., QE30 (12), p. 2946Moraes, J.C.S., Telles, E.M., Cruz, F.C., Scalabrin, A., Pereira, D., Carelli, G., Ioli, N., Strumia, F., (1992) Int. J. Infrared and Millimeter Waves, 13 (11), p. 1801Telles, E.M., Moraes, J.C.S., Scalabrin, A., Pereira, D., Moretti, A., Strumia, F., (1991) Appl. Phys. B, 52, p. 36Pereira, D., Scalabrin, A., (1992) Infrared Phys., 33 (6), p. 549Carelli, G., Ioli, N., Moretti, A., Pereira, D., Strumia, F., (1987) Appl. Phys. B, 44, p. 11
The effects of the duration of the artificial photoperiod on the growth parameters and behaviour of heavy pigs
No full textThe results of a trial involving 56 barrows exposed to two artificial photoperiod lengths at 70 lux (14-hour and 8-hour light period) suggest that a daily 14-hour lighting time improve growth parameters and welfare condition of heavy pigs
Osservazioni preliminari sugli effetti del metodo biologico nell'allevamento del suino pesante
No full textTHE EFFECTS OF ORGANIC FARMING METHOD ON HEAVY PIGPRODUCTION. PRELIMINARY RESULTS.In order to evaluate the effects of organic farming method onheavy pig (160 kg BW at slaughtering) productive parameters, atotal of 27 barrows was used and allocated to three groups eachcontaining 9 pigs. Pigs belonging to the control group (T1) were conventionally farmed, while animals of groups T2 and T3were given, according to organic farming rules, a greater space allowance and they were fed organic diets.Our preliminary data indicate that the application of organicfarming method allows satisfactory results and it does not causeany adverse effect either on the main productive parametersof heavy pigs (i.e. growth, feed efficiency, lean meat yield, carcass dissection), or on some qualitative characteristics ofmeat and fat (muscle composition, pH and colour of meat andfatty acid composition of subcutaneous adipose tissue).Riassunto.Per portare un contributo preliminare alla valutazione degli effetti dell’applicazione del metodo biologico sulle prestazioni produttive del suino pesante, è stata condotta un’esperienza utilizzando 27 maschi castrati assegnati a tre tesi sperimentali, ciascuna comprendente 9 soggetti. Nell’ambito della prima tesi (T1), che fungeva da controllo, gli animali sono stati allevati in maniera tradizionale, i soggetti delle tesi T2 e T3 hanno invece potutofruire di un maggiore spazio procapite e sono stati alimentati con diete di tipo “biologico”.L’applicazione del metodo biologico alla produzione del suino pesante ha, nell’ambito della nostra esperienza, fornito risultati complessivamente soddisfacenti senza indurre modificazioninegative dei parametri considerati, rappresentati dalle prestazioni di allevamento (incrementi ponderali e conversione alimentare), di macellazione (resa, tenore in carne magra esezionatura delle carcasse) e da alcune caratteristiche qualitative delle carni (pH, colore, composizione chimica del muscolo, profilo acidico dell’adipe di copertura delle cosce)
Modelling alkane and haloalkane mixture viscosities in a three-parameter corresponding states format.
No full textConvective cooling of supercritical carbon dioxide inside tubes: heat transfer analysis through neural networks.
No full textA multiparameter viscosity equation for 1,1-difluoroethane (R152a) with an optimized functional form.
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