Proyecto hojas Verdes

Archivo Fotográfico

Dr. Allan Booth

Professor of Classics, Allan Booth, lecturing.

St. Lawrence Seaway Authority fonds, 1984-1991, n.d.

The St. Lawrence Seaway is a system of locks, canals and channels. Construction of the seaway began in 1954 and it opened on April 25th, 1959. It consists of a 189 mile (306 kilometer) stretch of the seaway between Montreal and Lake Ontario. The Seaway is considered to be an engineering feat with 7 locks in the Montreal – Lake Ontario section which lift vessels to 246 feet (75 meters) above sea level. The 28 mile (44 kilometer) Welland Canal is the fourth version of a link between Lake Ontario and Lake Erie. Today there are 8 Canadian locks which lift ships 326 feet (100 meters) over the Niagara Escarpment. The St. Lawrence Seaway Authority is a Canadian Government Crown Corporation which is financially self-sufficient. It depends on the tolls charged to the users of the Seaway for its revenue and operating expenses.

CENTRAL NORTH ATLANTIC PALEOCEANOGRAPHY DURING THE MIDDLE PLEISTOCENE (ca. 726–603 ka): INSIGHTS FROM THE DINOFLAGELLATE CYST RECORD

Integrated Ocean Drilling Program (IODP) Site U1313, located at the northern boundary of the subtropical gyre in the central North Atlantic, lies within the southern part of the ice-rafted debris belt. Seventy-three palynological samples were studied from an uninterrupted interval ca. 726–603 ka (upper Marine Isotope Stage [MIS] 18 through lower MIS 15) to resolve conflicting paleoceanographic interpretations. Glacial stages were characterized by high productivity surface waters reflecting a southward shift of the Arctic Front. Sea surface salinities (SSSs) and sea surface temperatures (SSTs) were obtained by transfer functions using the Modern Analogue Technique. The lowest SSTs of 9ºC (±1.3) and 10ºC (±1.3) were recorded in glacial MIS 16 and MIS 18 respectively. However, these reconstructions are influenced by abundant heterotrophic taxa and may reflect elevated nutrient levels rather than lowered temperatures. Reworked palynomorphs uniquely indicate a Cretaceous as well as Paleozoic provenance for the first Heinrich-like events.

Capital humano, crecimiento, pobreza : problemática mexicana

UANL

Aedificare 2005 : anuario de investigaciones de la Facultad de Arquitectura

UANL

The tree of knowledge ; a document by a woman

UANL

La señora Vital y la señorita Leliebre

UANL

El nido ajeno : gente conocida ; El marido de la Téllez ; De alivio

UANL

Obras escogidas de Sor Juana Ines de la Cruz : llamada en su siglo la decima musa mejicana.

UANL

Apuntamientos históricos de los concilios provinciales mexicanos y privilegios de América. Estudios previos al Primer Concilio Provincial de Antquera

UANL

Leyendas del tiempo heróico episodios de la Guerra de Independencia Americana

UANL

Quantifying Capital Mobility in OECD and EU Areas.

Rapport de recherche