Scientific study of the pigments and binders used in mural painting from the 16th-century ce St Mary's Church of Cheriapally,Kottyam, Kerala,and its relevance to conservation

The aim of this investigation was to analyze the materials and techniques of the paintings in the 16th-century ce St Mary's Church, to evaluate deterioration of the paintings, and to propose a suitable conservation treatment for their preservation. The material analysis of ground, pigments, binders, and plasters was undertaken using binocular microscopy, field emission scanning electron microscopy (SEM)–energy dispersive X-ray spectroscopy, X-ray fluorescence, Fourier transform infrared spectroscopy in reflectance (KBr) and transmittance mode (attenuated total reflection), thin-film X-ray diffraction, and micro-Raman spectroscopy. Gas chromatography–mass spectrometry (GC-MS) was used for identifying proteinaceous and lipidic materials extracted from the micro-samples. The study generated data on two different red and green pigments used as decorative materials. The red pigments were identified as cinnabar along with traces of hematite and clay minerals, and green as malachite and the minor presence of other minerals. SEM analysis identified cotton fiber embedded in the coarse plaster layer that provided better strength to the plaster. Plant oils and proteins found as the binder in the pigment samples suggested that the painting technique was executed as tempera. Lead white and gypsum materials were used in previous restoration works.     

First Insights into the Technique Used for Heat Treatment of Chert at the Solutrean Site of Laugerie‐Haute,France

The earliest evidence of flint and chert heat treatment was found in the ~21.5–17 ka old European Solutrean culture. The appearance of pyrotechnology as part of the production of stone tools has important implications for our understanding of Upper Palaeolithic technological evolution and the specific adaptations during the last glacial maximum in Europe. However, the techniques and procedures used to heat‐treat rocks during the Solutrean remain poorly understood. No direct archaeological evidence has so far been found and the most promising approach is to understand these techniques by determining the parameters with which flint and chert were heated at that time. In this study, we investigate the heating temperature of 44 heat‐treated laurel‐leaf points from Laugerie‐Haute, using a non‐destructive technique based on infrared spectroscopy. Our results document that most of the artefacts were heated to a narrow interval of temperatures between 250 °C and 300 °C. This indicates a standardized technique that allowed to created similar conditions during successive heating cycles. The implications of these results for our understanding of the technical complexity during the Solutrean must be discussed in the light of different heating techniques used at different places and periods.     

Multiregional Perspectives on the Archaeology of the Andes During the Late Intermediate Period (c. A.D. 1000–1400)

During the Late Intermediate period (LIP, c. A.D. 1000–1400), the central Andes experienced the decline of the Wari and Tiwanaku states, as well as processes of state formation, regional population growth, and competition culminating in the imperial expansion of the Chimú and Inka polities. The LIP holds the potential to link the archaeological features of early Andean states with the material signatures of the later ones, providing a critical means of contextualizing the intergenerational continuities and breaks in state structures and imperial strategies. The recent proliferation of LIP research and the completion of a number of regional studies permit the overview of six LIP regions and the comparison of highland and lowland patterns of political and economic organization, social complexity, and group identity.     

Two medieval ‘trepanations’ – therapy or swindle?

During the 1991–1992 excavation of the ruins of the medieval cathedral in Hamar, Norway, the broken skull of an elderly man was found, showing evidence of an incomplete trepanation. The ‘surgeon’ had obviously tried to penetrate the skull surface around bregma in an irregular circle of 23 × 21 mm. Upon investigation, the skull revealed a reactive‐pathological area of the internal surface of the occipital bone, which probably represents a respite after a meningeal disorder (a tumour or an infectious process), causing us to suggest that the trepanation was meant to cure the patient's increasing headache. However, as a second skull with similar marks was found in the same churchyard, another explanation seems possible. Because the brain tumour in the first case may have altered the patient's mental state, we may surmise that these incomplete operations were an attempt to remove from these patients' heads the ‘Stone of Madness’, which was then commonly considered to be the reason for psychiatric diagnoses as well as persistent headache, and often depicted in European art, most notably in the 16^th and 17^th centuries. The second skull, revealing an even more incomplete attempt, did not show any skeletal pathology at all. Copyright © 2007 John Wiley & Sons, Ltd.     

三江源地区医疗卫生事业可持续发展问题研究

大力发展三江源地区的医疗卫生事业,不断提高人民群众的健康水平,对于加快生态文明建设,推动环境保护,促进人与自然和谐相处,统筹经济社会全面协调可持续发展,着力改善民生,使该地区与全国同步实现全面建设小康社会目标,都具有十分重要的意义。本文在概要阐述三江源地区医疗卫生事业发展现状与特征以及政府公共卫生政策措施与效应的基础上,提出推动该地区医疗卫生事业可持续发展的若干公共政策建议。     

Murder or mortuary behaviour? An Iron Age enigma from Northeast Thailand

During the excavation of the Iron Age site of Noen U-Loke, in the Mun River Valley, northeast Thailand, in 1998 an unusual case of possible fatal cranial trauma in an elderly woman was recovered. Her skull was cleaved across the centre from side to side. The woman was buried with her head inside a ceramic pot, which is unusual for the site, but with jewellery similar to that in other burials. She was interred in a large cluster of graves, with a high proportion of infants and children. Her burial treatment suggests that she was not being treated punitively. The position of the mandible shows that the cleavage is not a postmortem artifact but it is not possible to determine the reason for it or whether it was the cause of her death or occurred immediately afterward. It is an unusual and intriguing enigma. Copyright © 2003 John Wiley & Sons, Ltd.     

Magic Bullets for Mental Disorders: The Emergence of the Concept of an “Antipsychotic” Drug

When “antipsychotic” drugs were introduced into psychiatry in the 1950s, they were thought to work by inducing a state of neurological suppression, which reduced behavioral disturbance as well as psychotic symptoms. This view was reflected in the name “neuroleptic.” Within a few years, however, the idea that the drugs were a disease-specific treatment for schizophrenia or psychosis, and that they worked by modifying the underlying pathology of the condition, replaced this earlier view, and they became known as “antipsychotics.” This transformation of views about the drugs' mode of action occurred with little debate or empirical evaluation in the psychiatric literature and obscured earlier evidence about the nature of these drugs. Drug advertisements in the British Journal of Psychiatry reflect the same changes, although the nondisease-specific view persisted for longer. It is suggested that professional interests rather than scientific merit facilitated the rise of the disease-specific view of drug action. The increasing popularity of atypical antipsychotics makes it important to examine the origins of the assumptions on which modern drug treatment is based.     

The effect of charring and burial on the biochemical composition of cereal grains: investigating the integrity of archaeological plant material

Stable isotope analysis of charred archaeobotanical cereal grains has the potential to provide direct evidence of crop growing conditions in the past and to refine palaeodietary predictions. If isotope values of archaeobotanical material are to be considered robust, it is necessary to characterise the compositional changes associated with their charring and burial. This study used a suite of analytical techniques, including FT-IR and solid state ¹³C NMR, to characterise changes in the biochemical composition of modern einkorn grains with heating at 230 °C for 2 h, 4 h, 8 h and 24 h, encompassing conditions that replicate their undistorted ancient counterparts. The biochemical composition of archaeobotanical charred einkorn grains was also investigated by FT-IR and solid state ¹³C NMR in order to assess the changes in composition which occur during burial. Results of FT-IR and solid-state ¹³C NMR show that heating of modern einkorn grains resulted in Maillard reactions between cereal proteins and starch, forming high molecular weight melanoidins, which contain both alkyl and aromatic carbon. Loss of low molecular weight carbon and nitrogen-containing volatiles resulted in a slight but non-systematic increase in the δ¹³C values and a systematic increase of 0.8‰ in the δ¹⁵N values of the charred einkorn grains. Solid-state ¹³C NMR shows that the ancient charred einkorn grains consisted entirely of aromatic carbon and retained a similar proportion of nitrogen to their modern 24 h charred counterparts, despite a significantly lower concentration of amino acids. This indicates that the amino acid nitrogen in the ancient charred grains was retained in the stable melanoidins whose polymeric structure makes them resistant to subsequent degradation.     

Our history is not false: perspectives from the revitalisation culture

Two dominant themes in architectural conservation doctrine are to (1) avoid the fabrication of ‘false’ histories through the clear differentiation of ‘new’ from ‘old’ building fabric; and (2) the deprecation of subjective ways in which the perception of building fabric engenders sense of place. This study explores the cultural values of a group of citizens engaged in revitalising their historic downtown through the ‘Main Street’ program in Anderson, South Carolina, United States. This ‘revitalisation culture’ values and promotes treatments to its historic environment that emphasise the conjectural fabrication of ‘historic’ elements to existing buildings and the use of historicised design for new, infill construction. Whilst these values go against the grain of conservation doctrine, the revitalisation culture is preserving a kind of authenticity that stems from socially and culturally constructed values in an effort to maintain the ability of the historic environment to engender ‘spontaneous fantasies’, which serve to emotionally attach the revitalisation culture with its historic downtown. Ultimately, the revitalisation culture is engaging in ‘unethical’ behaviour from the perspective of conservation professionals, which begs the question of whose values deserve attention and if the field of heritage conservation is able and willing to accept pluralistic concepts of how the authenticity of historic places can and should be conserved.     

The Mechanism and Kinetics of In Situ Conservation of Iron Cannon on Shipwreck Sites

Analysis of the pre‐disturbance values of the in situ corrosion parameters on historic iron shipwrecks and artefacts has established that the arithmetic product of the pH and corrosion potential is dependent on the burial environment and provides a unique insight into the objects' state of decay. The value of the product changes during in situ conservation treatment with sacrificial anodes, and reaches a minimum at which point the treatment is completed. Treatment times vary with water‐depth, being faster on shallower sites and shorter for more extensively corroded artefacts. The model was developed using data from the Duart Point wreck (1653), the Monitor‐styled warship HMVS Cerberus (1926) and a series of wrecks in Australia and the USA.