Identification of natural dyes in historical textiles from Romanian collections by LC-DAD and LC-MS (single stage and tandem MS)

In this study, the dyes present in five 17th- to 18th-century textiles from the National Museum of Art of Romania, three religious embroideries and two brocaded velvets, are characterized and discussed, together with earlier results on textiles from Romanian collections obtained by the same research group. Dye analyses were performed using two methods: the well-established liquid chromatography-diode array detection (LC–DAD) and a recently developed liquid chromatography-mass spectrometry (LC–MS) analytical protocol. The examination of very small historical samples by both techniques allows a better insight in the advantages and limitations of the two approaches to real analyses to be obtained. LC–MS data interpretation is based entirely on the results accumulated for dye standards. Electrospray ionization (ESI) was used in the negative ion mode and an ion trap served as mass analyzer. Both single stage (MS) and tandem (MS/MS) mass spectrometric approaches were considered. The dyes and natural sources identified by both analytical techniques are discussed in the historical context of the textiles, with respect to earlier results collected for similar Romanian objects. The study showed that the dye sources found in the 17th- and 18th-century Romanian velvets and embroideries were produced using a wide variety of dye sources, suggesting influences from Europe as well as from Asia Minor. Dye sources imported from New World have been also detected. The range of biological sources is in very good correspondence with earlier results obtained from textiles in the Romanian Collections. LC-MS (single stage and tandem MS) approaches have been demonstrated to be valuable tools for dye identification in small-scaled samples from historical textile objects only if sufficient knowledge on the dyes and their biological sources is first accumulated within experiments performed on standard dyes and standard dyed fibers.     

Curating and Controlling Zuni Photographic Images

This article explores the history of photography in Zuni and provides a context for the forthcoming request from Zuni religious leaders that they be allowed to exercise some control over sensitive images held by museums. This request is part of the debate over whether Native Americans should exercise some degree of control over historic photographs of their religious ceremonies. Some Zuni community members always considered photography of religious ceremonies to be inappropriate. How it happened sheds light on how Zunis incorporated the then-new technology into their traditional beliefs and social organization. Similarly, existing museum policy toward sensitive images is a result of the way photography has been incorporated into European and American legal and ethical thinking. In addition to lending weight to the contention that forthcoming requests from Native Americans are based on long-held beliefs rather than simply contemporary political expediency, history also suggests the parameters for an equitable solution to this issue.     

CAVEman: Standardized anatomical context for biomedical data mapping

The authors have created a software system called the CAVEman, for the visual integration and exploration of heterogeneous anatomical and biomedical data. The CAVEman can be applied for both education and research tasks. The main component of the system is a three‐dimensional digital atlas of the adult male human anatomy, structured according to the nomenclature of Terminologia Anatomica. The underlying data‐indexing mechanism uses standard ontologies to map a range of biomedical data types onto the atlas. The CAVEman system is now used to visualize genetic processes in the context of the human anatomy and to facilitate visual exploration of the data. Through the use of Java? software, the atlas‐based system is portable to virtually any computer environment, including personal computers and workstations. Existing Java tools for biomedical data analysis have been incorporated into the system. The affordability of virtual‐reality installations has increased dramatically over the last several years. This creates new opportunities for educational scenarios that model important processes in a patient's body, including gene expression patterns, metabolic activity, the effects of interventions such as drug treatments, and eventually surgical simulations. Anat Sci Ed 1:10–18, 2008. © 2007 American Association of Anatomists.     

Location preference and flavor aversion reinforced by amphetamine in rats

To associate the identical drug state with both a location and a flavor, rats were given intraperitoneal amphetamine injections and then confined for 20 min in one side of a shuttlebox with access to a flavored solution; on control trials without injections, they were confined for 20 min in the opposite side with a different flavor. In the first experiment, the rats were placed in the shuttlebox immediately after injections; in the second experiment, they were placed in the shuttlebox 20 min after injections. Subsequent free-choice tests in both experiments revealed an increased choice of the side of the shuttlebox associated with amphetamine but also an aversion to the flavored solution associated with the drug.     

The generic/nongeneric distinction influences how children interpret new information about social others

These studies investigate how the distinction between generic sentences (e.g., "Boys are good at math") and nongeneric sentences (e.g., "Johnny is good at math") shapes children's social cognition. These sentence types are hypothesized to have different implications about the source and nature of the properties conveyed. Specifically, generics may be more likely to imply that the referred-to properties emerge naturally from an internal source, which may cause these properties to become essentialized. Four experiments (N = 269 four-year-olds and undergraduates) confirmed this hypothesis but also suggested that participants only essentialize the information provided in generic form when this construal is consistent with their prior theoretical knowledge. These studies further current understanding of language as a means of learning about others.     

University Interaction in Central and South Eastern Europe

If regional groupings are a legitimate step on the road to European integration, co-operation in education, particularly university education, has a principal role to play in the process. In Central and Eastern Europe, university education is essential for finding solutions to the common problems of adopting a market economy and of achieving scientific and technological parity with the West. Its aims can be furthered by co-operation and emphasis upon multiculturalism and initiatives aimed at furthering the aims of the Bologna Declaration of June 1999 on a European Area of Higher Education.     

Data search strategy for science and technology emergence: A scalable and evolutionary query for nanotechnology tracking

Nanotechnology, like other emerging technologies that increasingly characterize the dynamic of our era, makes specific demands on datamining to track and interpret efficiently what is happening, through publications and other scientific output. We here propose and describe a strategy based on an automated lexical modular methodology to overcome rapidly evolving content and classification problems, which may otherwise accommodate poor quality of data and expert bias, with potential dire consequences for interpretation, decision and strategy. The proposed methodology is based on an initial nanostring enriched and screened by eight subfields, automatically identified and defined through the journal inter-citation network density displayed in the initial core nanodataset. Relevant keywords linked to each subfield are then tested for their specificity and relevance before being sequentially incorporated to build a modular query. We then, as a first test, compare the database constructed using this methodology for years 2003 and 2005 with those obtained by other approaches previously used to cover and explore the nanotechnology dynamic. Finally, using the inherent transparency, portablity and replicability of our methodology, we offer, in order to help our initial query evolve and develop, a set of evaluation processes for tests by researchers in the nano field, other scientometric teams and intelligence experts involved in decision-making processes.