A colonial town; Framingham, Massachusetts

Thesis (M.A.)--Boston University, 1948. This item was digitized by the Internet Archive

Domain wall engineering through exchange bias

The control of the structure and position of magnetic domain walls is at the basis of the development of different magnetic devices and architectures. Several nanofabrication techniques have been proposed to geometrically confine and shape domain wall structures; however, a fine tuning of the position and micromagnetic configuration is hardly achieved, especially in continuous films. This work shows that, by controlling the unidirectional anisotropy of a continuous ferromagnetic film through exchange bias, domainwalls whose spin arrangement is generally not favored by dipolar and exchange interactions can be created. Micromagnetic simulations reveal that the domain wall width, position and profile can be tuned by establishing an abrupt change in the direction and magnitude of the exchange bias field set in the system

Use of human protein C concentrates in the treatment of patients with severe congenital protein C deficiency

Protein C is one of the major inhibitors of the coagulation system that downregulate thrombin generation. Severe congenital protein C deficiency leads to a hypercoagulability state that usually presents at birth with purpura fulminans and/or severe venous and arterial thrombosis. Recurrent thrombotic events are commonly seen. From the 1990’s, several virus-inactivated human protein C concentrates have been developed. These concentrates currently constitute the therapy of choice for the treatment and prevention of clinical manifestations of severe congenital protein C deficiency. This review summarizes the available information on the use of human protein C concentrates in patients with severe congenital protein C deficiency

Postmenopausal bone loss : prevention and replacement

Osteoporosis is a skeletal disorder predominantly affecting postmenopausal women. Combination therapy of Carbocalcitonin (Elcatonin) and oral conjugated oestrogens (Premarin) not only prevents postmenopausal bone loss but leads to an increase in bone mass in normal early postmenopausal women. The aims of the study was to investigate the effect of combination therapy. A combination of Elcatonin (Carbo calcitonin) and Premarin was compared to Premarin alone, and to Elcatonin (Carbocalcitonin) alone and all groups were then compared to a control group.peer-reviewe

Coeducation:A Contested Practice in Nineteenth- and Twentieth-Century Secondary Schooling

This chapter discusses the history of coeducation in secondary schooling, mainly in Europe and North America. The analysis focuses on the gendered characteristics of educational systems and curricula, as well as on national discourses about single-sex or mixed schooling. The focus is on the latter half of the nineteenth and the first decades of the twentieth century, when the merits and perils of coeducation were debated for this stage of schooling. Until after World War II, children of the working class hardly ever attended school past the age of 13 or 14. Therefore, this is a history of middle- and upper-class education. In the early nineteenth century, girls had to do with a very limited, private education that prepared only for homemaking and motherhood, while boys could attend public grammar schools that opened the door to the university and the professions. From the mid-nineteenth century, initiatives to improve the quality of girls’ education were taken. Few countries opened up boys’ public schools for girls; in most cases, new girls’ schools were established with more serious but still unequal curricula, focusing mainly on humanities. Schools teaching a curriculum equivalent to that of the boys’ schools were not created until after the turn of the century, when a more critical view of coeducation became the rule. Democratization and coeducation came hand in hand with the introduction of comprehensive mixed secondary schooling in the 1960s and 1970s. The shortcomings of coeducation, however, were not rediscovered until after it had generally been introduced

Nanopatterning spin-textures: A route to reconfigurable magnonics

Magnonics is envisioned to enable highly efficient data transport and processing, by exploiting propagating perturbations in the spin-texture of magnetic materials. Despite the demonstrations of a plethora of proof-of-principle devices, the efficient excitation, transport and manipulation of spin-waves at the nanoscale is still an open challenge. Recently, we demonstrated that the spin-wave excitation and propagation can be controlled by nanopatterning reconfigurable spin-textures in a continuous exchange biased ferromagnetic film. Here, we show that by patterning 90° stripe-shaped magnetic domains, we spatially modulate the spin-wave excitation in a continuous film, and that by applying an external magnetic field we can reversibly â\u80\u9cswitch-offâ\u80\u9d the spin-wave excitation. This opens the way to the use of nanopatterned spin-textures, such as domains and domain walls, for exciting and manipulating magnons in reconfigurable nanocircuits

The connection between the depopulation of localiti es and passenger rail services in the Province of Buen os Aires in Argentina between 1960 and 2009

Indizada en: WorldCat; CrossRef; JournalSeek; Electronic Journals Library (EJL); Zeitschriftendatenbank (ZDB);EZB; Researchbib; Wissenschaftszentrum Berlin (WZB); Directory of Research Journals Indexing (DRJI)---------- Between 1960 and 2001 there were two processes that drew the interest of some social researchers in Argentina. On the one hand there was a process of rural depopulation from localities in the province of Buenos Aires (similar to the process of urbanization across Latin America). On the other hand, there was the break up of the railways that led to the cessation of passenger services to hundreds of localities inside the province of Buenos Aires. This study compares the two variables -localities in the interior of the province of Buenos Aires that lost population and railway lines which recorded decrease in the provision of passenger transport services. Census data and rail traffic between 1960 and 2009 are used. This crosses a quantitative methodology with concepts that the geographer Milton Santos has proposed. Maps are generated to look for any correspondence between these variables. Finally the concept of lag is applied to observe possible temporal relationships between variables. The results represent a first approach to a subject that has never been addressed with this methodology and analysis tool, verifying that it is necessary to incorporate more data to facilitate further analysis.Fil: Diez Tetamanti, Juan Manuel. Universidad Nacional de la Patagonia "San Juan Bosco". Facultad de Humanidades y Ciencias Sociales Sede Comodoro. Instituto de Investigaciones Geográficas de la Patagonia; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Pontrelli Albisetti, Melisa. Universidad Nacional de Mar del Plata. Facultad de Humanidades. Departamento de Geografia. Grupo de Estudios de Ordenacion del Territorio; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentin

Carrier Transport in Magnesium Diboride: Role of Nano-inclusions

Anisotropic-gap and two-band effects smear out the superconducting transition (Tc) in literature reported thermal conductivity of MgB2, where large electronic contributions also suppress anomaly-manifestation in their negligible phononic-parts. Present thermal transport results on scarcely explored specimens featuring nano-inclusions exhibit a small but clear Tc-signature, traced to relatively appreciable phononic conduction, and its dominant electronic-scattering. The self-formed MgO as extended defects strongly scatter the charge carriers and minutely the phonons with their longer-mean-free-path near Tc. Conversely, near room temperature, the shorter-dominant-wavelength phonon's transport is hugely affected by these nanoparticles, undergoing ballistic to diffusive crossover and eventually entering the Ioffe-Regel mobility threshold regime.Comment: 14 pages, 4 figures, 28 reference