A metalorganic vapor phase epitaxy-grown InGaN/GaN multiple-quantum-well (MQW) with three graded-thickness wells (the first-grown well had the greatest width) near the n-GaN was used as the active layer of an LED. For LEDs with an asymmetric quantum well (AQW), high-resolution X-ray diffraction and transmission electron microscopic reveal that the modified MQWs with a reasonable crystalline qua...

The "fundamental niche" is the range of conditions under which an organism can survive and reproduce, measured in the absence of biotic interactions. Niche measurements are often based on statistical relationships between species presence and measured environmental variables, or inferred from measured responses of species along hypothesized niche axes. In this study, we use novel, process-based...

Pereira Filho, J.; Rörig, L. R.; Hesse, K.; Poremba, K.; Schettini, C. A. F.; Proença, L. A. & Santos, J. E. 2009. Primary and Bacterial Production processes in the lower Itajaí-Açú estuary, Santa Catarina, BrazilBraz. J. Aquat. Sci. Technol. 13(1): 1-10. ISSN 1808-7035. Primary and bacterial productivity (PP and BP, respectively) were measured in the lower Itajaí-Açu estuary and in the adjacen...

Leaf resistance for water vapor (total diffusion resistance minus boundary layer resistance), transpiration, and leaf temperature were measured in attached leaves of greenhouse-grown Xanthium strumarium L. plants that had been pretreated for 72 hours with high (40 C day, 35 C night), or low (10 C day, 5 C night) air temperatures. Measurements were made in a wind tunnel at light intensity of 1.1...

A microcavity surface-emitting coherent electroluminescent device operating at room temperature under pulsed current injection is described. The microcavity is formed by a single defect in the center of a 2-D photonic crystal consisting of a GaAsbased heterostructure. The gain region consists of two 70Å compressively strained In0 15Ga0 85As quantum wells, which exhibit a spontaneous emission pe...

In this study the fresh water grown Blue-Green Algae (Anabaena ambigua) is studied for its maximum growth. This Blue-Green Algae (Anabaena ambigua) growth is studied in detail in three different media viz.,Fog’s media,BG-11, BBM , there was a significant change observed in growth of the species Anabaena ambigua at different light intensities and different media, during 15-days growth. Growth wa...

A water vapor sensor based on a combination of sol-gel processing and planar optical waveguide technologies has been developed. The indicator erythrosin B was entrapped in a thin sol-gel film (thickness ∼100 nm) prepared from methyltriethoxysilane, dimethyldiethoxysilane, and tetraethoxysilane. This dye exhibits an increase in absorbance in the presence of liquid or gaseous water. The sol-gel l...

A survey of the tourism industry on the island of Hawaii (the Big Island) in the state of Hawaii in the United States was conducted to collect baseline information on major resources (energy, food, and water consumption) and waste generation from five tourism sectors: accommodations, food and beverages (restaurants), golf courses, tourism services (tours), and rental cars. The questionnaire was...

Environmental change may affect predator-prey interactions in lakes through deterioration of visual conditions affecting foraging success of visually oriented predators. Environmental change in lakes includes an increase in humic matter causing browner water and reduced visibility, affecting the behavioural performance of both piscivores and prey. We studied diurnal patterns of prey selection i...