74-fs nanotube-mode-locked fiber laser

We report an erbium-doped, nanotube mode-locked fiber oscillator generating 74 fs pulses with 63 nm spectral width. This all-fiber-based laser is a simple, low-cost source for time-resolved optical spectroscopy, as well as for many applications where high resolution driven by short pulse durations is required. © 2012 American Institute of Physics.

Compressively Strained InGaAs/InGaAsP Quantum Well Distributed Feedback Laser at 1.74μm

The compressively strained InGaAs/InGaAsP quantum well distributed feedback laser with ridge-wave- guide is fabricated at 1.74μm. It is grown by low-pressure metal organic chemical vapor deposition（MOCVD）. A strain buffer layer is used to avoid indium segregation. The threshold current of the device uncoated with length of 300μm is 11.5mA. The maximum output power is 14mW at 100mA. A side mode suppression ratio of 35.5dB is obtained.

Participacao das cultivares de soja da EMBRAPA na producao de sementes fiscalizadas III. Parana, 1973/74 a 1983/84.

Amostragem e coleta de dados; Resultados; Conclusoes.

74 Front Street (for solo cello)

74 Front Street is intended as a musical response to the work of American sculptor Fred Sandback (1943-2003), in particular his string sculptures which are intentionally uncomplicated, minimal and strikingly beautiful. The relationship between these string works and music is rather distinct; indeed, before formally studying sculpture Sandback made a number of string instruments. He has said that his string works evolved from a desire to rid art of excessive decoration and, while there are instances of activity in 74 Front Street, much of the piece aims to reflect the simplicity of Sandback’s work.

The circle in the relationship between space and body. Photo-essay based on Isidro Blasco and the BAPNE method

This article demonstrates a visual study on the educational space in which the teaching of body percussion is carried out in universities. The methodological framework is chosen by the Visual Arts Based Educational Research, using the work of an artist as a conceptual and methodological model. The research remains notable (1) due to the theoretical reference to the BAPNE method, (2) due to the visual reference to the work of Isidro Blasco – especially with the piece “Shanghai Planet 2009” - ;(3) due to the parallelisms established between the object of study in this investigation -the spatial analysis- and the focuses of interest revealed by the art critics in relation to the work of this artist. By means of a visual speech formed with 7 photo-collages the relationship between body and educational space is visualized in the basic disposition of circular learning. The visual constructions by way of photo-collage and their aesthetic charge brings us closer to the intimacy of the educational space, in the style in which it is distributed to the students in the music classroom, the materialization of interpersonal relationships, the occupied and empty volumes.

Unesp Ciência, 2016, ano 7, número 74

Revista elaborada pela Assessoria de Comunicação e Imprensa da Reitoria da UNESP

Las poblaciones de aves guaneras en los ciclos reproductivos de 1969 / 70 a 1973 / 74

Describe los resultados de los censos gráficos desde 1969/70 hasta 1973/74, en millones de aves. Además menciona, que los principales factores limitantes del normal desarrollo de las poblaciones de aves son el Fenómeno del niño y el volumen del total anual de captura de anchoveta para la industria.