64 Result(s)

Article

Congenital pulmonary steal associated with Tetralogy of Fallot, right aortic arch and an isolated left carotid artery

R. Tozzi, M. Hernanz-Schulman, R. Kiley, N. Genieser, M. Ambrosino… in Pediatric Radiology (1989)

Article

Superconducting Y-Ba-Cu-O films by rf sputtering in axial magnetic field

Films of Y-Ba-Cu-O system have been prepared by rf sputtering from composite Y-Ba-Cu-O targets in an axial magnetic field in 4:1 Ar/O₂ mixture on 〈100〉 SrTiO₃ and 〈100〉 MgO substrates at 270°C and 450°C. Although...

R Pinto, S P Pai, L C Gupta in Bulletin of Materials Science (1991)

Article

Identification of GM2-gangliosidosis B1 variant carriers

GM2-gangliosidosis B1 variant, considered a rare disorder with a wide geographical and ethnic distribution, appears to be exceptionally frequent in Portugal. In order to establish a carrier detection method fo...

M. G. Ribeiro, R. Pinto, P. Oliveira… in Journal of Inherited Metabolic Disease (1993)

Article

Oxygen incorporation duringin situ growth of YBCO films on both sides of substrates

Oxygen out-diffusion during cooling and heating ofin situ grown {ie685-1} (YBCO) films in low oxygen pressure used during growth by pulsed laser deposition was studied in the temperature range 700−450°C usingin s...

S P Pai, R Pinto, P R Apte, C P D’Souza, A G Chourey… in Bulletin of Materials Science (1993)

Article

The N370S mutation in the glucocerebrosidase gene of Portuguese type 1 Gaucher patients: Linkage to the PvuII polymorphism

The mutation N370S accounts for 63% of the mutated glucocerebrosidase alleles of Portuguese type 1 Gaucher patients. It has been shown previously that this mutation is linked to the Pv1.1⁻ form of the PvuII polym...

L. Lacerda, O. Amaral, R. Pinto, J. Aerts… in Journal of Inherited Metabolic Disease (1994)

Article

Yield and quality in the production of cork stoppers

Bottle stoppers of natural cork are produced from cork planks as cylinders which are bored in the axial direction. The process was followed for the production of 38 mm×24 mm (length×diameter) stoppers, using c...

H. Pereira, B. Melo, R. Pinto in Holz als Roh- und Werkstoff (1994)

Article

Superconductivity and possible overdo** in Lu_1−x Ca _x Ba₂Cu₃O_7−δ

Structural and superconducting properties of the system Lu_1−x Ca _x Ba₂ Cu₃O_7−δ, both in bulk as well as thin film form, have been investigated. Presence of large ...

K. I. Gnanasekar, M. Sharon, R. Pinto… in Zeitschrift für Physik B Condensed Matter (1995)

Article

Superconductivity and possible overdo** in Lu_1−xCa _x Ba₂Cu₃O_7−δ

Structural and superconducting properties of the system Lu_1−xCa _x Ba₂ Cu₃O_7−δ, both in bulk as well as thin film form, have been investigated. Presence of large Ca-ions at the Lu...

K. I. Gnanasekar, M. Sharon, R. Pinto… in Zeitschrift für Physik B Condensed Matter (1995)

Article

Silver do**: A potential means to grow high quality YBa₂Cu₃O_7−x thin films on bare sapphire

High qualityAg-doped YBa₂Cu₃O_7−x (YBCO) thin films have been grown by laser ablation on 〈 ¯1012 〉 bare sapphire. This work demonstrates thatAg-do** can be used as very convenient means to realize good quality ...

Dhananjay Kumar, K. M. Satyalakshmi, S. Sundar Manoharan… in Journal of Superconductivity (1995)

Article

C-Axis Oriented Ferroelectric thin Films of PbTiO₃ on Silicon Substrate by Pulsed Laser Ablation

We are reporting the successful deposition of single phase c-axis oriented ferroelectric thin films of PbTiO₃ on Si (100) by pulsed laser deposition. It is shown that the formation of non ferroelectric Pb₂Ti₂O₆ p...

V. R. Palkar, S. C. Purandare, S. P. Pai… in MRS Online Proceedings Library (1995)

Article

Geometrical model and experimental evidence for the growth of Ag-doped YBa₂Cu₃O_7−x thin films

The improvement in the properties of laser-ablated Ag-doped YBa₂Cu₃O_7−x (YBCO) thin films in both normal and superconducting states has been interpreted using a growth model. The model is simple and is based on ...

Dhananjay Kumar, P. R. Apte, R. Pinto, S. P. Pai… in Journal of Superconductivity (1996)

Article

LaNiO₃: A promising material for contact with YBa₂Cu₃O₇₋ δ thin films

Epitaxial LaNiO₃ metallic oxide thin films have been grown onc-axis oriented YBa₂Cu₃O_7−δ thin films on 〈100〉 LaAlO₃ substrates by pulsed laser deposition technique and the interface formed between the two films h...

Dhananjay Kumar, K. M. Satyalakshmi, M. S. Hegde… in Journal of Superconductivity (1996)

Article

LaNiO₃ and Cu₃Ge contacts to YBa₂Cu₃O_7-x films

Metallization of high-T_c superconductors using low resistivity metal oxides and Cu-Ge alloys has been investigated on high quality pulsed laser deposited epitaxial YBa₂Cu₃O_7-x (YBCO) films. Epitaxial LaNiO₃ (LNO)...

D. Kumar, R. D. Vispute, O. Aboelfotoh, S. Oktyabrsky… in Journal of Electronic Materials (1996)

Article

C-Axis Oriented Thin Films of PbZrO₃ on Silicon Substrate by Pulsed Laser Ablation

We report the successful deposition of single phase c-axis oriented films of lead zirconate (PbZrO₃) on a silicon substrate by pulsed laser ablation. The formation of the film at different substrate temperatures ...

S. Chattopadhyay, V. R. Palkar, P. Ayyub, S. C. Purandare… in MRS Online Proceedings Library (1996)

Article

The valence state of M-ions in the chemically stabilized YSr2Cu3-xMxO7+δ (M=Mo, W and Re) superconductors

 Single phase Ba-free Sr-based YSr₂Cu _3-x M _x O_7+δ (M=Mo, W and Re) compounds have been stabilized by chemical do**. Superconductivity is obse...

M. Murugesan, P. Selvam, M. Sharon, L. C. Gupta, R. Pinto… in Applied Physics A (1997)

Article

Synthesis of thin films of polycrystalline ferroelectric BiNbO₄ on Si by pulsed laser ablation

The stibiotantalite (ABO₄) family includes a number of ferroelectrics and antiferroelectrics with excellent potential for applications. We report the deposition of phase-pure, polycrystalline thin films of BiNbO₄

Soma Chattopadhyay, Pushan Ayyub, R. Pinto, M. S. Multani in Journal of Materials Research (1998)

Article

Microstructure and Temperature Dependence of Microwave Penetration Depth of Ag-YBa₂Cu₃O_7-δ Thin Films

We report the measurements of the magnetic penetration depth λ(T) of Ag-doped YBa₂Cu₃O_7-δ (YBCO) thin films in the film thickness range 1500-4000A and temperature range 18-88K. The films are insitu grown by laser...

Davinder Kaur, R. Pinto in MRS Online Proceedings Library (1998)

Article

Novel ceramic substrates for high Tc superconductors

A group of complex perovskite oxides REBa₂NbO₆ (RE=La and Dy) have been synthesized and developed for their use as substrates for both YBa₂Cu₃O_7-δ and Bi(2223) superconductors. These materials have a complex cubi...

J Koshy, J Kurian, R Jose, Asha M John, P K Sajith… in Bulletin of Materials Science (1999)

Article

1/f Noise properties of swift heavy ion irradiated epitaxial thin films of YBCO

Effect of 250 MeV¹⁰⁷Ag ion irradiation induced columnar defects on the noise properties of the YBCO superconductor in the normal and superconducting state have been investigated. Magnitude of the spectral density...

S K Arora, Ravi Kumar, D Kanjilal, G K Mehta, S Khatua… in Bulletin of Materials Science (1999)

Article

Synthesis of nanocrystalline material by sputtering and laser ablation at low temperatures

Physical vapor deposition techniques such as sputtering and laser ablation – which are very commonly used in thin film technology – appear to hold much promise for the synthesis of nanocrystalline thin films a...

P. Ayyub, R. Chandra, P. Taneja, A.K. Sharma, R. Pinto in Applied Physics A (2001)