Propagation of collective pair excitations in disordered Bose superfluids

We study the effect of disorder on the propagation of collective excitations in a disordered Bose superfluid. We incorporate local density depletion induced by strong disorder at the meanfield level, and formulate the transport of the excitations in terms of a screened scattering problem. We show that the competition of disorder, screening, and density depletion induces a strongly non-monotonic energy dependence of the disorder parameter. In three dimensions, it results in a rich localization diagram with four different classes of mobility spectra, characterized by either no or up to three mobility edges. Implications on experiments with disordered ultracold atoms are discussed.Comment: 9 pages, 5 figure

NORWICH (Reino Unido) (Inglaterra). Planos de población (1766). 1:2450

Dedicatoria : "The City and County of Norwich Sends Two Members to Parliament, & is govern'd by a Mayor, Recorder, Steward... to whom, this Plan is most humbly Dedicated by their most Obedient Humble Servant : Samuel King,Land Surveyor. Subscribed for in the Mayoralty of Sans Poole Esq. 1766"Escala gráfica de 20 "chains" de 22 yardas [= 16'5 cm]. Coordenadas de la ciudad referidas al meridiano de Londres (E 1°20'/N 52°42'). Orientado con lis en rosa de ocho vientosOrografía de perfil y a trazosToponimia de las principales calles y plazas de la ciudad, señalando además sus edificios más representativosNota explicativa acerca de la situación de la ciudad y los días en que se celebran mercados o feriasEn los márgenes, perspectivas de los seis principales edificios de la ciudad, tanto civiles como religiosos (el castillo, la catedral. etc). Figurandos escudos de pequeño tamaño y otro más de la ciudad flanqueado por dos figuras alegóricas. Dedicatoria enmarcada en cartela rococó que engloba lossímbolos del poder civilForma parte de la Colección Mendoz

Re-membering the Living Earth: A Year in Rural Sri Lanka

The following thesis tells the story of my year in rural Sri Lanka. After college, I traveled from suburban New York to the highlands of the island country with the hopes of writing an ethnography on agrarian Buddhism. I soon realized, however, that I was not just embarking on an academic project, but an inner journey to explore ways of being that had been lost in the modern culture I had known. My narrative recounts how immersion in a rice cultivating village deepened my sense for what it means to live in reciprocity with the more-than-human world—a world of plants, animals, ancestors, and spirits dwelling in a sacred land suffused with stories. More broadly, I suggest that the ability to re-member animistic ways of being is vital to restoring a healthy human presence in the Earth community. My narrative is organized into twelve chapters that trace how my inner journey mirrored the transformation of the rice paddies across time

Investigating the relationship between amphotericin B and extracellular vesicles produced by Streptomyces nodosus

The antifungal drug amphotericin B is made by Streptomyces nodosus and is released into culture broths at concentrations exceeding its solubility in water. The recent discovery of extracellular vesicles derived from Streptomyces species suggests that amphotericin B could be released from the biomass using this delivery system. This thesis identified a Streptomyces soil isolate through the construction of a phylogenetic tree based on 16S sequences. The soil isolate was used to develop methods to image Streptomyces extracellular vesicles using STEM, which were then used to examine whether S. nodosus produces extracellular vesicles. Initial co-localisation experiments using size fractionation indicated that amphotericin B was associated with fractions containing extracellular vesicles. Extracellular vesicles from the culture fluid of a mutant unable to produce amphotericin B, indicated that vesicle production was not dependent on amphotericin synthesis but may play a role in delivering other hydrophobic molecules

Purchasing-power depreciation under rising price level

Call number: LD2668 .R4 1963 C51

An Alternate View of Neuroprotection with Peptides in Alzheimer’s Disease

Neuroprotection plays a crucial role in everyday life, maintaining a clean environment in the central nervous system to allow for normal functioning. In Alzheimer’s disease and other neurodegenerative disorders, neuroprotection may have two roles. Under standard circumstances, the immune system protects the CNS, but sometimes it can exacerbate the pathophysiology of some diseases through neuroinflammation leading to further degeneration. Alzheimer’s disease is fast getting out of control, with no new approvals in therapeutics since 2003, and of those approved, all target symptomatic treatment. Initiated by a microglial response to Aβ plaques, therapeutic development should focus on the amyloid cascade as a neuroprotective measure for Alzheimer’s disease. This chapter will examine the status of the types of therapeutics in clinical trials for Alzheimer’s disease, offering insights into peptides as an area of opportunity for neuroprotection and detailing considerations for the use of peptides in Alzheimer’s disease