Infrared and infrared emission spectroscopy of gallium oxide α-GaO(OH) nanostructures

Infrared spectroscopy has been used to study nano to micro sized gallium oxyhydroxide α-GaO(OH), prepared using a low temperature hydrothermal route. Rod-like α-GaO(OH) crystals with average length of ~2.5 μm and width of 1.5 μm were prepared when the initial molar ratio of Ga to OH was 1:3. β-Ga2O3 nano and micro-rods were prepared through the calcination of α-GaO(OH) The initial morphology of α-GaO(OH) is retained in the β-Ga2O3 nanorods. The combination of infrared and infrared emission spectroscopy complimented with dynamic thermal analysis were used to characterise the α-GaO(OH) nanotubes and the formation of β-Ga2O3 nanorods. Bands at around 2903 and 2836 cm-1 are assigned to the -OH stretching vibration of α-GaO(OH) nanorods. Infrared bands at around 952 and 1026 cm-1 are assigned to the Ga-OH deformation modes of α-GaO(OH). A significant number of bands are observed in the 620 to 725 cm-1 region and are assigned to GaO stretching vibrations.

Yacht Oasis à M. Delage, remorquant le Gao au départ de Villennes [sur Seine] : [photographie de presse] / [Agence Rol]

Référence bibliographique : Rol, 60271

大明高僧傳Da ming gao seng zhuan.Vies des bonzes éminents jusqu'à la dynastie des Ming.

Par Ru xing, avec préface de l'auteur (1617).8 livres.

高厚蒙求Gao hou mong qiu.Collection de traités scientifiques.

Contient : I天學入門Tian xue ru men.Éléments de cosmographie ; II海域大觀Hai yu da guan.Éléments de géographie ; III天地圖儀Tian di tu yi.Des cartes célestes et terrestres ; IV日晷圖法Ri gui tu fa.Figure et explication du cadran solaire et d'autres instruments ; V自鳴鐘表圖法Zi ming zhong biao tu fa.Figure et explication des horloges européennes

天主親立領洗告解二要規之理Tian zhu qin li ling xi gao jie er yao gui zhi li.

Sur l'institution par Notre Seigneur lui-même du baptême et de la confession.Par Zhang Geng, de Jin jiang, avec introduction.5 feuillets.

告解原義Gao jie yuan yi.

Du sacrement de la pénitence.Par le P. Verbiest. Table, texte avec notes dans la marge supérieure.11 feuillets.

GAO 34

Brown sediment with clasts ranging from small to large in a sandy matrix. Clast shape ranges from angular to rounded. The clasts are mainly well dispersed. Rotation structures are common in this sample, along with grain crushing. Some lineations can also be seen in this sample.

GAO 36

Brown sediment with clasts ranging from small to large. Clast shape ranges from angular to sub-rounded. The sample is dominated with a sandy matrix. Some lineations can be seen throughout the sample. Rotation structures can also be seen in minor amounts.

Uma generalização do algorítmo de Gao para fatoração de polinômios

A presente dissertação trata da fatoração de polinômios em duas variáveis sobre um corpo F. Mais precisamente, o trabalho traça o desenvolvimento histórico de uma estratégia modular que levou à resolução desse problema em tempo polinomial e culmina com a apresentação de um algoritmo publicado por S. Gao no ano de 2003, que determina simultaneamente as fatorações racional e absoluta de um dado polinômio. A nossa contribuição consiste na extensão desse algoritmo a casos que não satisfazem as condições prescritas pelo autor.

Puerto Rico : update of selected information contained in a 1981 GAO report : fact sheet for the Chairman, Committee on Energy and Natural Resources, U.S. Senate /

"B-234765"--P. 1.

Transfer of interest on U.S. investment in the Panama Canal (GAO/AFMD-85-63).

Includes letter of April 8, 1985 from William R. Gianelli, Chairman, Board of Directors, Panama Canal Commission, to Frederick D. Wolf, Director, Accounting and Financial Management Division, U.S. General Accounting Office, Washington, D.C. (p. 12-17).