Oblique surface waves at an interface between a metal–dielectric superlattice and an isotropic dielectric

We investigate the existence and dispersion characteristics of surface waves that propagate at an interface between a metal–dielectric superlattice and an isotropic dielectric. Within the long-wavelength limit, when the effective-medium (EM) approximation is valid, the superlattice behaves like a uniaxial plasmonic crystal with the main optical axes perpendicular to the metal–dielectric interfaces. We demonstrate that if such a semi-infinite plasmonic crystal is cut normally to the layer interfaces and brought into contact with a semi-infinite dielectric, a new type of surface mode can appear. Such modes can propagate obliquely to the optical axes if favorable conditions regarding the thickness of the layers and the dielectric permittivities of the constituent materials are met. We show that losses within the metallic layers can be substantially reduced by making the layers sufficiently thin. At the same time, a dramatic enlargement of the range of angles for oblique propagation of the new surface modes is observed. This can lead, however, to field non-locality and consequently to failure of the EM approximation.

Las Reales viruelas, muerte e inoculación en la Corte española

Durante el siglo XVIII, la viruela alcanzó su máxima expresión como enfermedad devastadora, y se convirtió en la primera causa de mortalidad infantil. En su deambular como azote mundial, diezmaba la población afectando a todas las clases sociales. Las monarquías europeas sufrieron la virulencia de la enfermedad, y se produjeron cambios notables en el devenir de las casas reales por el fallecimiento de reyes o príncipes herederos. La introducción de la inoculación como remedio preventivo contra la viruela fue apoyada por las monarquías, pero no se aplicó de manera sistemática, lo que redujo su impacto en las estadísticas de mortalidad. Revisamos los efectos de la viruela en la Corte española, enfermedad que llevó a la extinción de la Casa de Austria y afectó también a los borbones; de manera tardía, estos aceptaron la inoculación y contribuyeron a la propagación de la vacuna.

Una propuesta fallida para propagar la vacuna contra la viruela en Hispanoamérica (1802)

Tras la inicial propagación del método jenneriano por Inglaterra y el resto del continente europeo, se mostró un gran interés por difundirlo hacia Oriente y América. En el caso de España, los focos epidémicos que estaban ocurriendo en los territorios de ultramar movieron a las autoridades de los distintos virreinatos a solicitar a la Corona que enviara cuanto antes el nuevo remedio. La monarquía borbónica, que había introducido las expediciones científicas como elemento de progreso y dominio, aprobó el proyecto conocido como “Real Expedición Filantrópica de la Vacuna”, que partió hacia América al mando de Balmis en 1803. Relatamos una propuesta inédita anterior a esa, en la que un desconocido cirujano, Rafael de Malaguilla, se ofreció para llevar a cabo una iniciativa similar.

Notebook on logarithms, ca. 1714-1718, 1747

This notebook is missing at least one page, as it begins in the midst of a problem. It contains extensive notes on logarithms and various related examples, problems, and calculations. Prince made notes on the addition, subtraction, multiplication, and division of logarithms, as well as some notes on navigation. The last two pages of this notebook contain a draft of a letter from Prince to an unnamed gentleman in London, thanking him for his financial support. This is believed to have been written in June 1747, when Prince arrived in Portsmouth, England "without one six pence in [his] pocket & without Hat, Coat, Breeches, Shirts, Stockings or shoes fit to come up to London with." In the letter, he thanks this donor for his support and describes in detail his situation and the challenges facing him in leaving the Navy and beginning missionary work. He refers several times to Dr. Philip Bearcroft, the Secretary of the Society for the Propagation of the Gospel, who was responsible for his approval as a Missionary to the Moskito tribe.

Letter book : manuscript, 1764-1771

Tryon's official letter book containing copies of letters and documents relating to his work as colonial governor of North Carolina; with references concerning drawing a boundary between North Carolina and South Carolina; talks with the Cherokee Indians; the establishment of a postal service; working with the Propagation of the Gospels in Foreign Parts; establishing the Church of England in North Carolina; strengthening the defenses of the colony; maintaining better communication with Great Britain; and other events.

Letter from Benjamin Colman to Edward Wigglesworth about John Leverett, 1728 March 4

Benjamin Colman wrote this letter to Edward Wigglesworth on March 4, 1728; it was sent from Colman, in Boston, to Wigglesworth, in Cambridge. The letter concerns their mutual friend, John Leverett, who had died several years before. It appears that Wigglesworth was charged with writing an epitaph for Leverett and had solicited input from Colman. Colman writes of his great admiration for Leverett, praising his "virtue & piety, wisdom & gravity [...] majesty & authority [...] eye & voice, goodness & courtesie."

Cdk Activity Couples Epigenetic Centromere Inheritance to Cell Cycle Progression

Centromeres form the site of chromosome attachment to microtubules during mitosis. Identity of these loci is maintained epigenetically by nucleosomes containing the histone H3 variant CENP-A. Propagation of CENP-A chromatin is uncoupled from DNA replication initiating only during mitotic exit. We now demonstrate that inhibition of Cdk1 and Cdk2 activities is sufficient to trigger CENP-A assembly throughout the cell cycle in a manner dependent on the canonical CENP-A assembly machinery. We further show that the key CENP-A assembly factor Mis18BP1(HsKNL2) is phosphorylated in a cell cycle-dependent manner that controls its centromere localization during mitotic exit. These results strongly support a model in which the CENP-A assembly machinery is poised for activation throughout the cell cycle but kept in an inactive noncentromeric state by Cdk activity during S, G2, and M phases. Alleviation of this inhibition in G1 phase ensures tight coupling between DNA replication, cell division, and subsequent centromere maturation.

Alice, an adultery.

"...slightly abridged from the privately issued first edition...."

Let's go.

Mode of access: Internet.

Rapport sur les missions du diocèse de Québec.

Mode of access: Internet.

Summary technical report.

v.1. Historical and technical survey.--v.2. Radio wave propagation experiments.--v.3. The propagation of radio waves through the standard atmosphere.

The Episcopal church in the American colonies.

Mode of access: Internet.

Contributions to Physics-Based Aeroservoelastic Uncertainty Analysis

Thesis (Ph.D.)--University of Washington, 2016-06

Does terrestrial epidemiology apply to marine systems?

Most of epidemiological theory has been developed for terrestrial systems, but the significance of disease in the ocean is now being recognized. However, the extent to which terrestrial epidemiology can be directly transferred to marine systems is uncertain. Many broad types of disease-causing organism occur both on land and in the sea, and it is clear that some emergent disease problems in marine environments are caused by pathogens moving from terrestrial to marine systems. However, marine systems are qualitatively different from terrestrial environments, and these differences affect the application of modelling and management approaches that have been developed for terrestrial systems. Phyla and body plans are more diverse in marine environments and marine organisms have different life histories and probably different disease transmission modes than many of their terrestrial counterparts. Marine populations are typically more open than terrestrial ones, with the potential for long-distance dispersal of larvae. Potentially, this might enable unusually rapid propagation of epidemics in marine systems, and there are several examples of this. Taken together, these differences will require the development of new approaches to modelling and control of infectious disease in the ocean.

Adventitious root formation in Grevillea (Proteaceae), an Australian native species

Grevillea (Proteaceae) is a native Australian plant genus with high commercial value as landscape ornamentals. There has been limited research on the culture and propagation of Australian native species. The effect of indole-3-butyric acid (IBA) on the rooting of G. 'Royal Mantle' and G. 'Coastal Dawn' in winter, spring and summer was evaluated at University of Queensland Gatton, Southern Queensland in order to determine the rooting ability of this species in different seasons. Both Grevillea cultivars showed seasonal rooting. The more difficult-to-root G. 'Coastal Dawn' had a reduced response to IBA application than G. 'Royal Mantle'. Stem and leaf indole-3-acetic acid (IAA) levels were not different between cultivars, therefore rooting ability between the two cultivars does not appear to be due to the differences in endogenous IAA levels. (c) 2005 Elsevier B.V. All rights reserved.