Aluari Gomez Thalichristia ...

Pie de imp. tomado del colofón

Aluari Gomez Thalichristia ...

Pie de imp. tomado del colofón

Impact of Impurities on the Mechanical Strength of Multicrystalline Silicon

The usage of more inexpensive silicon feedstock for crystallizing mc-Si blocks promises cost reduction for the photovoltaic market. For example, less expensive substrates of upgraded metallurgical silicon (UMG-Si) are used as a mechanical support for the epitaxial solar cell. This feedstock has higher content of impurities which influences cell performance and mechanical strength of the wafers. Thus, it is of importance to know these effects in order to know which impurities should be preferentially removed or prevented during the crystallization process. Metals like aluminum (Al) can decrease the mechanical strength due to micro-cracking of the silicon matrix and introduction of high values of thermal residual stress. Additionally, silicon oxide (SiOx) lowers the mechanical strength of mc-Si due to thermal residual stresses and stress intensification when an external load is applied in the surrounding of the particle. Silicon carbide (SiC) introduces thermal residual stresses and intensifies slightly the stress in the surrounding of the particle but can have a toughening effect on the silicon matrix. Finally, silicon nitride (Si3N4) does not influence significantly the mechanical strength of mc- Si and can have a toughening effect on the silicon matrix.

Terapêutica da amigdalite aguda em idade pediátrica : estudo transversal sobre antibioterapia nos cuidados de saúde primários e urgência hospitalar em 2012

Trabalho Final do Curso de Mestrado Integrado em Medicina, Faculdade de Medicina, Universidade de Lisboa, 2014

Madame Le Fèvre de Caumartin as Hebe

Jean-Marc Nattier; 3 ft. 4 23/64 in.x 2 ft. 8 3/32 in.; oil on canvas

Obras del V. P. M. Fr. Luis de Granada : Libro quarto de trece sermones con otros varios tratados espirituales ... Tomo VI.

Mode of access: Internet.

Coleccion de las obras sueltas, assi en prosa, como en verso /

Fiestas del SSmo. Sacramento repartidas en doce Actos Sacramentales En sus Loas y Entremeses, compuesta por el Phenix de España Fray Lope Felix de Vega Carpio... recogidas por el Lic. Joseph Ortiz de Villena...

The sacred books of the East.

Tâoism. The sacred books of China. The texts of Tâoism. In vol. 39, 4âry-Upanishads. In vol. I, 15.--Vedânta-Sûtras. With the commentary by Saṅkarâkaarya. In vol. 34, 38, 48.--Vedic hymns. In vol. 32, 46.--Vinaya text. Translated from the Pâli.l In vol. 13, 17, 20.--Vishnu. The institutes of Vishnu. In vol. 7.--Zend-Avesta. In vol. 4, 23, 31.--A general index to the names and subject-matter, comiled by M. Winternitz. In vol. 50.

Thomae Sydenham ... Opera medica ... : tomus primus [-secundus] : cum elenchis rerum & indicibus necessariis.

"Guilhelmi Musgrave ... De arthritide symptomatica dissertatio ..." -- "Guilhelmi Musgrave ... De arthritide anomala, sive interna dissertatio ..."

Thomae Sydenham ... Opera medica ... : tomus primus [-secundus] : cum elenchis rerum & indicibus necessariis.

"Guilhelmi Musgrave ... De arthritide symptomatica dissertatio ..." -- "Guilhelmi Musgrave ... De arthritide anomala, sive interna dissertatio ...", con pie de imprenta fechado en 1715.

Aquamanile in the Form of a Falconer on Horseback

1 ft. 1 21/32 in.x 11 7/32 in.x 4 23/32 in.; copper alloy

Dower Chest

Furniture, US, American Colonial, Pennsylvania German, 18C; 2 ft. 4 5/8 in.x 4 ft. 4 23/64 in.x 1 ft. 10 63/64 in.; yellow pine, tulip pine

Daoist Immortal Laozi

Chen Yanqing; 7 31/64 in.x 4 23/32 in.x 2 3/4 in.; gilt bronze; lost-wax cast