Reconstruction Activities And First Results From The Thomson Scattering Diagnostic On The Tcabr Tokamak

An incoherent and infrared Thomson scattering diagnostic (ITS) was transferred from ISTTOK (Lisboa) and reconstructed on TCABR (S. Paulo). In the first phase of this international collaboration, the diagnostic uses a Neodymium:Glass laser with up to 10 Joules per laser pulse and a first generation polychromator with three pairs of interference filters and avalanche photodiodes. It measures 90° scattered radiation in a single volume of observation with a single laser pulse to obtain the instant plasma electron temperature. This paper reports the reconstruction activities already carried out and presents the first experimental results. These activities include: new data model performance, laser refurbishing, new laser delivery system, stray-light reduction in the vacuum vessel, new collection lens and relative diagnostic calibration. A long run of experiments with this diagnostic shows consistency and coherence with the other TCABR diagnostics and gives indications to be able to contribute effectively to the Alfven heating program of this tokamak. © 2010 IOP Publishing Ltd.227Alonso, M.P., Wilcock, P.D., Varandas, C.A.F., (1999) Rev. Sci. Inst., 70 (1), p. 783Alonso, M.P., Berni, L., Severo, J.H., Borges, F.O., Elizondo, J.I., MacHida, M., Varandas, C.A.F., Galvo, R.M.O., (2008) Plasma Fusion. Sci., 996, p. 192Alonso, M.P., Figueiredo, A.C.A., Berni, L.A., Varandas, C.A.F., (2008) Plas. Sci. IEEE Trans. Plasma Sci., 36 (4), p. 11094Bellintani, J.V., Elfimov, A.G., Elizondo, J.I., Fagundes, A.N., Fonseca, A.M.M., Galvo, R.M.O., Guidolin, L., MacHida, M., (2006), 875, p. 350Berni, L.A., Alonso, M.P., Oliveira, R.M., (2004) Rev. Sci. Inst., 75 (10), p. 388

Multipoint Thomson Scattering Diagnostic For The Tcabr Tokamak With Centimeter Spatial Resolution

This paper describes a multiapoint Thomson scattering system that is being developed for the TCABR tokamak based on a signal delay technique, which allows the determination of the electron temperature and plasma density radial profiles, with approximately 1 cm spatial resolution, employing just one spectrometer. © 2008 American Institute of Physics.996192198Bellintani Jr., V., Overview of recent results of TCABR (2006) AIP Conference Proceedings, 875, p. 350Alonso, M.P., Wilcock, P.D., Varandas, C.A.F., (1999) Rev. Sci. Instrum., 70, p. 783Bemi, L.A., Alonso, M.P., Oliveira, R.M., (2004) Rev. Sci. Instrum., 75, p. 3884Desilva, W., The evolution of light scattering as a plasma diagnostic (2000) Contrib. Plasma Phys., 40, pp. 23-35Sheffield, J., (1975) Plasma Scattering of Electromagnetic Radiation", , Academic Press Londo

Error Analysis In The Electron Temperature Measurements In Tcabr

An analytical method is proposed to evaluate the experimental uncertainty in the electron temperature measurements in the TCABR tokamak. Solving the integral equation resulting from the convolution of two functions, one representing, the scattered light and the other the spectral apparatus function, i.e., the polychromator, an analytical expression for the electron temperature is obtained, from which the uncertainty in the measured value is readily evaluated. The results show that the major contribution to the error comes from the noise in the signal; the uncertainties in the filters parameters do not contribute significantly to the total error.3701 Instituto de Fisica del Plasma (INFIP),Cons. Nac. Invest. Cient. Tec. (CONICET),Comision Nacional de Energia Atomica (CNEA),Agencia Nacional de Promocion Cientifica y Tecnologica (ANPCyT),Centro Latino-Americano de Fisica (CLAF)Ruchko, L.F., (2002) Braz. J. Phys., 32 (1), pp. 57-64Nascimento, I.C., (2005) Nucl. Fusion, 45, p. 796Nascimento, I.C., (2007) Nucl. Fusion, 47, p. 1570Severo, J.H.F., Tsypin, V.S., Galvão, R.M.O., Nascimento, I.C., Tendler, M., Fagundes, A.N., (2002) Braz. J. Phys, 32 (1), pp. 13-19Severo, J.H.F., Nascimento, I.C., Tsypin, V.S., Galvão, R.M.O., (2003) Nucl. Fusion, 43, pp. 1047-1056Severo, J.H.F., (2009) Nucl. Fusion, 49, p. 115026Severo, J.H.F., Nascimento, I.C., Tsypin, V.S., Kuznetov, Yu.K., Saettone, E.A., Vannucci, A., Galvão, R.M.O., Mikhailovskii, A.B., (2004) Phys. Plasma, 11 (2), pp. 846-848Alonso, M.P., Figueiredo, A.C.A., Borges, F.O., Elizondo, J.I., Galvão, R.M.O., Severo, J.H.F., Usuriaga, O.C., Machida, M., (2010) Rev. Sci. Inst., 81, pp. 10D529Severo, J.H.F., Nascimento, I.C., Kuznetov, Yu.K., Tsypin, V.S., Galvão, R.M.O., Tendler, M., (2007) Rev. Sci Inst., 78, p. 043509Alonso, M.P., (2010) J. Phys.: Conf. Series, 227, p. 012027Forrest, M.J., Peacock, N.J., Robinson, D.C., Sannikov, V.V., Wilcock, P.D., (1970) Culham Plasma Physics Laboratory Report CLM-R 107, , AbingdonAnashin, A.M., Gorbunov, E.P., Ivanov, D.P., Lysenko, S.E., Peacock, N.J., Robinson, D.C., Sannikov, V.V., Strelkov, V.S., (1971) Sov. Phys. - JETP, 33, p. 1127Rautian, S.G., (1958) Sov. Phys. Uspekhi, 66 (1), p. 245Alonso, M.P., Figueiredo, A.C.A., Berni, L.A., Varandas, C.A.F., (2008) IEEE Trans. Plasma Sci., 36 (4), p. 1094Sheffield, J., (1975) Plasma Scattering of Electromagnetic Radiation, , New York: Academic pres

Suspeita de febre familiar dos cães Shar-peis chineses Suspected familiar chinese Shar-pei dog fever

A febre (síndrome) familiar dos cães Shar-peis Chineses é uma doença hereditária autossômica recessiva. Este trabalho descreve um caso de amiloidose generalizada em um cão Shar-pei Chinês, fêmea, de três anos de idade, cujo quadro clínico-patológico é consistente com o da febre familiar dos cães Shar-peis chineses. Esse animal tinha uma história clínica de edema bilateral recidivante na região do jarrete que vinha sendo observado desde os sete meses de idade. Três dias antes da morte, esse cão apresentou anorexia, apatia, vômito e diarréia. À necropsia, ambos os rins estavam firmes, pálidos e possuíam a superfície capsular irregular. Histologicamente foram observados depósitos de amilóide nos rins, no pâncreas, na tireóide e no baço. Esse amilóide perdeu sua afinidade para o vermelho Congo, quando utilizado o permanganato de potássio. Esse achado é consistente com amiloidose do tipo AA.<br>Chinese Shar-pei familial fever is a breed-associated hereditary autosomal recessive disease of Chinese Shar-pei dogs. A case of generalized amyloidosis in a 3-year-old female Chinese Shar-pei dog with a tentative diagnosis of familial Chinese Shar-pei fever is described. This animal had a clinical history of episodic bilateral swelling of the tarsal joints since 7-month-old. Vomiting, diarrhea, anorexia and lethargy were observed 3 days prior to death. At necropsy, both kidneys were firm, whitish and had an irregular capsular surface. Microscopically, amyloid deposits were observed in the kidneys, pancreas, thyroid glands and spleen. Amyloid deposits lost their affinity for Congo red after treatment with potassium permanganate indicating AA-type amyloidosis

Lesões de pele em bovinos com doença granulomatosa sistêmica associada ao pastoreio de ervilhaca (Vicia spp.) Skin lesions in cattle with systemic granulomatous disease associated to pasturing vetch (Vicia spp.)

Descrevem-se as lesões cutâneas macroscópicas em 10 e histológicas em 8 vacas afetadas por doença granulomatosa sistêmica associada ao pastoreio de ervilhaca (Vicia spp.). Em todos os casos, as lesões cutâneas eram caracterizadas por múltiplas áreas coalescentes de alopecia, liquenificação e descamação. Os locais mais atingidos pela lesão de pele foram: cabeça e pescoço (10/10), tronco (4/10), períneo (3/10) e mama (2/10). Em todos os 8 casos avaliados histologicamente, as lesões se caracterizavam por dermatite perivascular superficial granulomatosa de intensidade variável. Outros achados histológicos incluíram dermatite perivascular profunda (1/8), perifoliculite (2/8), foliculite mural (3/8), hiperqueratose ortoqueratótica compacta (6/8), erosões (1/8), úlceras (2/8), microabscessos de Munro (8/8), crostas serocelulares (1/8), espongiose (4/8), degeneração hidrópica (5/8), acantólise (1/8), corpúsculos de Civatte (2/8), exocitose linfoplasmocitária (6/8), edema superficial (6/8), incontinência pigmentar (2/8), basofilia (6/8) e mineralização distrófica do colágeno (2/8), tumefação do núcleo das células endoteliais (8/8) e ectasia de glândulas sudoríparas (8/8).<br>Gross and histopathological lesions in the skin of respectively 10 and 8 cows affected with systemic granulomatous disease associated with pasturing vetch (Vicia spp.) are described. In all cases, the cutaneous lesions were characterized by multiple coalescent areas of alopecia, lichenification and desquamation. More frequently affected sites were the skin covering the head and neck (10/10), trunk (4/10), escutcheon (3/10) and mammary gland (2/10). In all 8 histologically examined cases the lesions were characterized by superficial perivascular granulomatous dermatitis of varying intensity. Other histological findings included deep perivascular dermatitis (1/8), perifoliculitis (2/8), mural foliculitis (3/8), compact orthokeratotic hyperkeratosis (6/8), erosions (1/8), ulcers (2/8), Munro’s microabscess (8/8), serocellular crusts (1/8), spongiosis (4/8), hydropic degeneration (5/8), acantholysis (1/8), Civatte bodies (2/8), lymphoplasmacytic exocytosis (6/8), superficial edema (6/8), pigmentary incontinence (2/8), basophilia (6/8) and collagen dystrophic mineralization (2/8), swollen nucleus of endothelial cells (8/8) and sweat gland ectasy (8/8)

Síndrome urológica felina: 13 casos Feline urologic syndrome: 13 cases

Treze casos (8,44%) de síndrome urológica felina foram diagnosticados em 154 necropsias de gatos realizadas de 1991 a 1997. Dados epidemiológicos, sinais clínicos, lesões de necropsia e achados histopatológicos foram revisados. Sete animais eram machos inteiros e seis eram machos castrados. Obstrução uretral, hematúria, disúria e distensão vesical foram os principais sinais clínicos. Os principais achados de necropsia e histopatológicos foram cistite hemorrágica, pielonefrite, edema perirrenal, hidronefrose, necrose tubular e uretrite.<br>Thirteen cases (8.44%) of feline urologic syndrome were diagnosed in 154 necropsies carried out in cats from 1991 to 1997. Epidemiological data, clinical signs, gross, and histopalhological features were reviewed. Seven cats were intact males and six were castrated males. Urethral obstruction, hematuria, dysuria, and urinary bladder distention were the main clinical signs. Main gross and histopathological findings were hemorrhagic cystitis, pyelonephritis, perirenal edema, hydronephrosis, tubular necrosis, urethritis