Two-photon polarization fluorescence microscopy is used to study the nature of the emission and nonlinear absorption dipole of single CdSe/ZnS quantum rods. Rods showed strongly polarized nonlinear excitation with sharp angular dependence, following a cos4(φ) functional form, in agreement with the predicted two-photon absorption process. The two-photon absorption is parallel to the emission polarization and allows high orientation selectivity in excitation to be achieved. This further demonstrates the role of single molecule measurements in unraveling basic principles of light−matter interactions otherwise masked by ensemble averaging.
It is commonly accepted that face-to-face communication induces cooperation. The experiment disentangles communication and social effect (replication of Roth, 1995) and examines the components of the social effect with the help of unilateral communication. Results suggest that separate processes, both of a strategic and of an affective-social nature may induce cooperative outcomes in ultimatum bargaining with pre-play communication, depending on the communication protocol. Unilateral communication is found to have weaker effects than bilateral communication, and affects especially the recipient of the communication.
E. Amitai, Nystuen, J. A. , Liao, L. , Meneghini, R. , ו Morin, E.. 2004.
“Uniting Space, Ground, And Underwater Measurements For Improved Estimates Of Rain Rate”. Ieee Geoscience And Remote Sensing Letters, 1, Pp. 35–38. doi:10.1109/LGRS.2004.824767.
Publisher's Version תקציר Global precipitation is monitored from a variety of platforms including spaceborne, ground-, and ocean-based platforms. Intercomparisons of these observations are crucial to validating the measurements and providing confidence for each measurement technique. Probability distribution functions of rain rates are used to compare satellite and ground-based radar observations. A preferred adjustment technique for improving rain rate distribution estimates is identified using measurements from ground-based radar and rain gauges within the coverage area of the radar. The underwater measurement of rainfall shows similarities to radar measurements, but with intermediate spatial resolution and high temporal resolution. Reconciling these different measurement techniques provides understanding and confidence for all of the methods.
Jue Lin, Ly, Hinh , Hussain, Arif , Abraham, Mira , Pearl, Sivan , Tzfati, Yehuda , Parslow, Tristram G, ו Blackburn, Elizabeth H. 2004.
“A Universal Telomerase Rna Core Structure Includes Structured Motifs Required For Binding The Telomerase Reverse Transcriptase Protein”. Proceedings Of The National Academy Of Sciences, 101, Pp. 14713–14718. doi:10.1073/pnas.0405879101.
Publisher's Version תקציר Telomerase synthesizes telomeric DNA by copying a short template sequence within its telomerase RNA component. We delineated nucleotides and base-pairings within a previously mapped central domain of the Saccharomyces cerevisiae telomerase RNA (TLC1) that are important for telomerase function and for binding to the telomerase catalytic protein Est2p. Phylogenetic comparison of telomerase RNA sequences from several budding yeasts revealed a core structure common to Saccharomyces and Kluyveromyces yeast species. We show that in this structure three conserved sequences interact to provide a binding site for Est2p positioned near the template. These results, combined with previous studies on telomerase RNAs from other budding yeasts, vertebrates, and ciliates, define a minimal universal core for telomerase RNAs.
Tzachi Zamir. 2004.
“Veganism”. Journal Of Social Philosophy, 35, Pp. 367-379.
תקציר The article discusses the social philosophy of vegans. Vegans charge moral vegetarians with inconsistency: if eating animals is a participation in a wrong practice, consuming eggs and dairy products is likewise wrong because it is a cooperation with systematic exploitation. Vegans say that even the more humane parts of the contemporary dairy and egg industry rely on immoral practices, and that therefore moral vegetarianism is too small a step in the right direction. According to vegans, moral vegetarians have conceded that animals are not means; that human pleasure cannot override animal suffering and death; that some industries ought to be banned; and that all this carries practical implications as to their own actions. Yet they stop short of a full realization of what speciesist culture involves and what living a moral life in such an environment requires. Moral vegans distinguish themselves from moral vegetarians in accepting the practical prescriptions of altogether avoiding benefiting from animal exploitation, not just of avoiding benefiting from the killing. Vegans take the killing to be merely one aspect of the systematic exploitation of animals. The moral logic of veganism appears sound. The viability of moral vegetarianism depends on the ability to establish a meaningful difference between animal-derived products which they boycott, and those that they consume. Moral vegetarians agree that the egg and dairy industry has to be radically reformed.
Vladimir Pecherin (1807-1885), a Russian political emigré and Catholic convert was a controversial figure both in nineteenth-century Ireland and in Russian intellectual history. In his autobiographical notes and in the letters to his Russian corespondents of the 1860s and the 1870s, eventually collected in Apologia pro vita mea (Mémoires d'outre-tombe), Pecherin provides a vivid display of the evolution of Russian thought. His writings as a whole constitute an artistic presentation of the Russian Zeitgeist. Certain glaring contradictions between the ideas expressed in Pecherin's Russian correspondence and the reality of his long life within the Catholic Church require explanation. The article focuses on the authorial intention behind Pecherin’s autobiographical writing. In the hope of cementing his connection with Russia, Pecherin created in his memoirs the largely stock literary image of a “superfluous man,” a dominant literary figure of nineteenth-century Russian literature. Pecherin’s practical activity within the Catholic Church was, however, by no means superfluous, as his reputation in Dublin attests. Pecherin’s epistles to Russia invert the genre of “confession of conversion” and form a “confession of disillusionment.” Pecherin’s “hero” writes a repentant story in which he recounts a life-long pattern of devotion to various deceptive illusions, among which he counts Socialism, Hegelianism, as well as Catholicism and religion in general. The constant reinventions of himself are matched by surprising flexibility of his literary style, which seems to imitate the major voices of Russian classic literature, from Karamzin and Dostoevsky to Turgenev. If we acknowledge that Pecherin’s memoirs are primarily a work of art and only then a source of historically accurate information, many of his apparent contradictions are explained. Natalia Pervukhina, Bryn Mawr College Ph.D. 1986, is Professor at the University of Tennessee, Knoxville, is author of Anton Chekhov: The Sense and the Nonsense (Legas Publishers, 1993), V.S. Pecherin. Emigrant na vse vremena (Yazyki Slavianskoi Kultury, 2006), Zapiski na pamiat’ (Memoirs of a Russian Life, Pencil Box Press, 2018), and a number of articles on Russian literature and intellectual history. updated in March 2019 |
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JA Morgan, Pataki, DE , Körner, Christian , Clark, HENRY , Del Grosso, SJ , Grünzweig, JM , Knapp, AK , Mosier, AR , Newton, PCD , ו Niklaus, Pascal A. 2004.
“Water Relations In Grassland And Desert Ecosystems Exposed To Elevated Atmospheric Co 2”. Oecologia, 140, Pp. 11-25.
The paper presents a reading of the architectural settings of Samuel Richardson’s novel Pamela and [first name] Kukor’s film Gaslight in terms of the new valorization of privacy reflected in the “vertical arrangement” of the Georgian terrace houses.
June 2004: Kay Young is Associate Professor of English at the University of California, Santa Barbara. She is author of Ordinary Pleasures: Couples, Conversation, and Comedy, a study of narrative intimacy and happiness. Currently, she is writing a book called Coming to Consciousness: Mind, Body, Emotion and the 19th-Century English Novel. |
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