Bruce Hill and Charles Sankey

Chancellor Sankey shaking hands with C. Bruce Hill during the Spring 1970 Convocation.

Over Hill and Dale

And through creek and bog as well.

Indenture between George Hill Field and Jacob M. Field

Indenture of single deed between George Hill Field of the Township of Grimsby and Jacob M. Field of the Township of Grimsby regarding Lot no. 5 in Core A in the Town of Grimsby - instrument no. 3130, November 4, 1863.

Indenture between Henry Hope Graham and Robert Hill to Joseph Walker

Indenture of deed of land situate between Henry Hope Graham and Robert Hill, both of London, England called England Esquire Executors and Trustees under the Last Will and Testament of Lieutenant General Percy Hill of London, England to Joseph Walker of Queenston, Ontario. This is in regard to parts of Lots no. 113, 114 and 115 in the Township of Niagara. This was registered on Nov. 10, 1885 – instrument no. 2075, Oct. 31, 1885.

New Feature at Niagara – Clark Hill Islands

New Feature at Niagara – Clark Hill Islands (5 islands situated in the rapids of the Niagara River). These islands are currently known as Dufferin Islands, 22 ½ cm. x 15 ½ cm, n.d.

The Hill readers

UANL

GCSE geography for Avery Hill.

Prepara el General Certificate Secondary Education (GCSE) para el WJEC (Welsh Joint Education Committee), consorcio de autoridades educativas del País de Galés. Estudia las relaciones entre lugares, procesos y personas para facilitar un conocimiento profundo de problemas contemporáneos, como la sostenibilidad, la interdependencia y la globalización. Se divide en cuatro unidades principales cada una de las cuales tiene la estructura de la evaluación y los requisitos del examen.

McGraw-Hill's nursing school entrance exams.

Este recurso permite la preparación para los distintos exámenes de ingreso en la escuela de enfermería. Incluye ocho pruebas prácticas sobre habilidades verbales, de comprensión lectora, de matemáticas y de ciencias, así como información sobre la carrera y la orientación educativa de un profesional de la enfermería.

Movimientos sociales, activismo intelectual y luchas del lugar: conversación con Arturo Escobar, profesor de antropología de la Universidad de North Carolina, Chapel Hill y director del Instituto de Estudios Latinoamericanos de esta misma institución (Entrevista)

Esta conversación fue parte de un video-conferencia entre profesores y estudiantes del doctorado en Estudios Culturales Latinoamericanos de la Universidad Andina Simón Bolívar, Sede Ecuador y Arturo Escobar, el 13 de septiembre de 2006, dentro del marco de discusión planteado en el seminario sobre movimientos sociales titulado: Insurgencias Colectivas en perspectiva Histórico-Mundial.

Effects of host plant drought stress on the performance of the bird cherry-oat aphid, Rhopalosiphum padi (L.): a mechanistic analysis

1. The growth (increase in height and leaf number) of four grass species was reduced by a -0.5 MPa drought stress, but the performance of an associated herbivore, Rhopalosiphum padi (L.), was not affected consistently. The intrinsic rate of increase of R. padi was reduced by drought stress on three grass species, including Dactylis glomerata (L.), but was unaffected on Arrhenatherum elatius (L.). Therefore, there is no general relationship in the effect of plant drought on an insect herbivore, even among closely related host plant species. 2. Drought stress increased the quality of plant phloem sap, as indicated by increased sieve element osmotic pressure and essential amino acid concentrations. Thus, diet quality could not account for the reduced performance of R. padi under drought stress. The concentration of essential amino acids in the phloem of well-watered A. elatius was, however, lower than that of well-watered D. glomerata, correlating with the decreased performance of aphids on well-watered A. elatius. 3. There were no differences in aphid feeding duration between watering treatments or plant species but sap ingestion rates were reduced significantly under drought stress. 4. Using the measure of dietary amino acid concentrations and the estimate of sap ingestion, the essential amino acid flux through aphids was calculated. Compared with the flux through aphids feeding on well-watered D. glomerata, there was a reduction in aphids feeding on drought-stressed D. glomerata and drought-stressed A. elatius due to lower sap ingestion rates. The flux through aphids on well-watered A. elatius was also reduced due to low phloem essential amino acid concentrations. Thus, the performance of an aphid is correlated with the availability and accessibility of essential amino acids.

The regulation of sweet cherry fruit abscission by polar auxin transport

Inconsistency of cropping is an important problem for UK sweet cherry production. Premature fruit abscission in Prunus can reduce yields severely, however, the environmental cues and hormonal signals that trigger abscission have not been identified. Auxin (IAA) is known to delay abscission by reducing the sensitivity of cells in the abscission zone to ethylene, a promoter of abscission. Therefore, the capacity for polar auxin transport (PAT) through sweet cherry pedicels was examined in relation to fruit abscission. Cherry ‘spurs’ (short shoots) with similar leaf areas and different fruit numbers were phloem-girdled to restrict assimilate movement. Abscission from spurs with many fruit (eight or more) occurred within 14 days of girdling, whereas abscission from spurs with few (two) fruit was minimal. The pedicels’ capacity for PAT in spurs with different fruit numbers was determined 1, 3 and 9 days after girdling (DAG). Fruit were analysed for endogenous IAA concentration 3, 5, 7 and 9 DAG. PAT inhibitors 2,3,5-triiodobenzoic acid or 1-N-naphthylphtalamic acid were applied to pedicels of fruit not expected to abscise, i.e. on spurs with few fruit. The effect of these inhibitors on fruit abscission was determined 14 DAG. The proportion of the transported [3H]-IAA was lower from the outset in pedicels from spurs with many fruit. By 9 DAG, symptoms of fruit abscission were apparent and 40% less [3H] -IAA was transported through pedicels on spurs with many fruit. Fruit endogenous IAA concentrations were similar in the two groups of spurs. Application of PAT inhibitors shortly after girdling increased fruit abscission by 30%. The results suggest that although a decline in PAT is not the only cause of fruit abscission, the maintenance of PAT contributes to fruit retention.