Evolution of the electronic structure with size in II-VI semiconductor nanocrystals

In order to provide a quantitatively accurate description of the band gap variation with sizes in various II-VI semiconductor nanocrystals, we make use of the recently reported tight-binding parametrization of the corresponding bulk systems. Using the same tight-binding scheme and parameters, we calculate the electronic structure of II-VI nanocrystals in real space with sizes ranging between 5 and 80 {\AA} in diameter. A comparison with available experimental results from the literature shows an excellent agreement over the entire range of sizes.Comment: 17 pages, 4 figures, accepted in Phys. Rev.

Characterization of a New Mouse Model for Peripheral T Cell Lymphoma in Humans

Peripheral T cell lymphomas (PTCLs) are associated with a poor prognosis due to often advanced disease at the time of diagnosis and due to a lack of efficient therapeutic options. Therefore, appropriate animal models of PTCL are vital to improve clinical management of this disease. Here, we describe a monoclonal CD8+ CD4− αβ T cell receptor Vβ2+ CD28+ T cell lymphoma line, termed T8-28. T8-28 cells were isolated from an un-manipulated adult BALB/c mouse housed under standard pathogen-free conditions. T8-28 cells induced terminal malignancy upon adoptive transfer into syngeneic BALB/c mice. Despite intracellular expression of the cytotoxic T cell differentiation marker granzyme B, T8-28 cells appeared to be defective with respect to cytotoxic activity as read-out in vitro. Among the protocols tested, only addition of interleukin 2 in vitro could partially compensate for the in vivo micro-milieu in promoting growth of the T8-28 lymphoma cells

Transforming bonds: ritualising post-mortem relationships in the Netherlands

People continue relationships with their dead in a variety of ways. Since the 1990s, the idea of ‘continuing bonds’ has provided a framework for exploring and understanding post-mortem relationships. However, the dynamics of the bonds between the living and the dead have received little attention. By looking at the intersection of things, practices and spaces, this paper demonstrates that expressions of continuing bonds do not always point to continuity, and indeed can signify discontinuity. It explores the ‘transforming bonds’ between the recently bereaved and their deceased in the Netherlands, illustrating how post-mortem relationships change and how such changes affect the social location of the deceased and the bereaved. By attending to the ritual dynamics of separation, transition and integration, two aspects of the social and material relationships between the living and the dead are highlighted. First, attention is given to the ways wherein the bereaved relocate their deceased through material objects within and outside of their homes, enabling them to renegotiate the absence–presence of the deceased. Second, the paper illustrates that personalised incorporation practices are inevitably linked to negotiations and contestations in the social sphere, and the norms and values of the social environment

Discussions and Reviews : Toward an ethology of human conflict: a review

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/67149/2/10.1177_002200276701100310.pd

A sex-limited serum protein variant in the mouse: Inheritance and association with the H-2 region

An alloantiserum produced in the mouse has been used to detect an antigen which is present only in male serum from certain inbred strains of mice, e.g., DBA/2J, A/J, and BALB/c. Genetic tests reveal that the presence of this antigen is controlled by a dominant autosomal gene which is expressed only in males of the proper genotype. Test crosses and analysis of congenic resistant strains indicate close linkage between the sex-limited protein ( Slp ) and the histocompatibility-2 ( H-2 ) region of linkage group IX. Analysis of seven intra- H-2 recombinant strains is consistent with the placement of the genetic determinant for Slp within the H-2 region in the same position as the Ss (serum substance) determinant. Immunological evidence suggests that the Slp antigenic sites reflect structural variation in the Ss component of mouse serum.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/44166/1/10528_2004_Article_BF00485752.pd

Low-Cost Flexible Nano-Sulfide/Carbon Composite Counter Electrode for Quantum-Dot-Sensitized Solar Cell

Cu2S nanocrystal particles were in situ deposited on graphite paper to prepare nano-sulfide/carbon composite counter electrode for CdS/CdSe quantum-dot-sensitized solar cell (QDSC). By optimization of deposition time, photovoltaic conversion efficiency up to 3.08% was obtained. In the meantime, this composite counter electrode was superior to the commonly used Pt, Au and carbon counter electrodes. Electrochemical impedance spectra further confirmed that low charge transfer resistance at counter electrode/electrolyte interface was responsible for this, implied the potential application of this composite counter electrode in high-efficiency QDSC

Writing Russia's future: paradigms, drivers, and scenarios

The development of prediction and forecasting in the social sciences over the past century and more is closely linked with developments in Russia. The Soviet collapse undermined confidence in predictive capabilities, and scenario planning emerged as the dominant future-oriented methodology in area studies, including the study of Russia. Scenarists anticipate multiple futures rather than predicting one. The approach is too rarely critiqued. Building on an account of Russia-related forecasting in the twentieth century, analysis of two decades of scenarios reveals uniform accounts which downplay the insights of experts and of social science theory alike