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Culture
Kinds of Culture Terms modified by Culture Selected AbstractsWAL-MART, LEISURE, AND CULTURECONTEMPORARY ECONOMIC POLICY, Issue 4 2009ART CARDEN This essay contributes to the debate about the alleged spillover effects associated with Wal-Mart's growth. Combining county-level data on Wal-Mart entry and location from 1985 through 1998 with individual-level data on leisure activities, we estimate a positive relationship between Wal-Mart penetration and participation in activities involving inputs that can be bought at Wal-Mart. The relationship between Wal-Mart penetration and activities that do not involve inputs that can be bought at Wal-Mart is negative in most cases but may be positive or zero for "cultural" activities such as attending classical music concerts and visiting art galleries. The evidence is consistent with the thesis that deeper Wal-Mart penetration expands consumption possibilities.(JELA13, D00, C12, Z11, Z13) [source] CULTURE, TREATMENT AND THE CULTURE OF TREATMENTADDICTION, Issue 1 2010JAMES BELL No abstract is available for this article. [source] ORGANIZATIONAL CULTURE AND THE ADOPTION OF MANAGEMENT ACCOUNTING PRACTICES IN THE PUBLIC SECTOR: A SINGAPORE STUDYFINANCIAL ACCOUNTABILITY & MANAGEMENT, Issue 2 2007Yew Ming Chia First page of article [source] CASE STUDY: THE FOCOLARE MOVEMENT , EVANGELIZATION AND CONTEMPORARY CULTURE: PART 1INTERNATIONAL REVIEW OF MISSION, Issue 364 2003Lorna Gold First page of article [source] DETERMINATION OF pH CHANGE KINETICS DURING DIFFERENT STAGES OF KASHAR CHEESE MANUFACTURING FROM RAW AND PASTEURIZED MILK WITH ADDITION OF THERMOPHILIC, MESOPHILIC AND MIXED THERMOPHILIC CULTUREJOURNAL OF FOOD PROCESS ENGINEERING, Issue 4 2008AHMET FERIT ATASOY ABSTRACT The pH change kinetics during Kashar cheese production from raw and pasteurized milk with addition of thermophilic, mesophilic and mixed thermophilic-mesophilic lactic acid bacteria were evaluated. The kinetics of pH change were determined during milk ripening, cooking/holding and pressing/fermentation phases of Kashar cheese. The pH decreased logarithmically, nonlinearly, with time in the milk ripening period, and reduced linearly with time in the cooking/holding and pressing/fermentation stages. Pasteurization of milk retarded the rate of change in pH during the three periods. The highest rate of pH change was determined in the addition of thermophilic culture, followed by mixed thermophilic-mesophilic and then mesophilic ones during milk ripening. The pH change characteristics of cheese made with thermophilic starter were similar to the cheese made with mixed thermophilic-mesophilic culture, but different from mesophilic lactic acid bacteria during cooking/holding and pressing/fermentation stages. PRACTICAL APPLICATIONS One of the important factors in the control of cheese quality is the extent of acid production in the vat. Acid development at a desired rate is important during cheese making. The progress of acidification is monitored by pH change in the industrial Kashar cheese production. Three main stages have been recognized with respect to pH change: milk ripening, cooking/holding and pressing/fermentation. This study evaluated and compared the pH change kinetics during various stages of Kashar cheese making using raw, pasteurized milk with the addition of thermophilic, mesophilic and mixed thermophilic culture. This work may help in the comparison of raw and pasteurized milk, and in the selection of appropriate starter culture for Kashar cheese production. [source] CARBON SOURCES AND THEIR EFFECT ON GROWTH, ACETIC ACID AND ETHANOL PRODUCTION BY BRETTANOMYCES BRUXELLENSIS IN BATCH CULTUREJOURNAL OF FOOD PROCESS ENGINEERING, Issue 1 2007M.G. AGUILAR USCANGA ABSTRACT The influence of available low-cost carbohydrates as carbon sources on Brettanomyces bruxellensis growth, acetic acid and ethanol production was studied in order to ascertain the viability of this yeast to eventually become an industrial acetic acid producer. Six different raw materials were included as carbon sources (glucose, sugarcane molasses, refined cane sugar, pineapple, sugarcane and beet juices). B. bruxellensis develops in a complex culture medium like plant juices and sugarcane molasses better than in a medium with a simple carbohydrate such as glucose. The maximum acid acetic yield (0.24 g/g) and productivity (0.14 g/L/h) were attained in tests carried out with sugarcane molasses containing 60 g/L sucrose. The strain produced low levels of ethanol in a refined sugarcane medium, but was able to produce a substantial quantity of acetic acid (13 g/L). [source] OPTIMAL CONDITIONS FOR THE GROWTH AND POLYSACCHARIDE PRODUCTION BY HYPSIZIGUS MARMOREUS IN SUBMERGED CULTUREJOURNAL OF FOOD PROCESSING AND PRESERVATION, Issue 4 2009PING WANG ABSTRACTS In submerged cultivation, many nutrient variables and environmental conditions have great influence on the growth and polysaccharide production by Hypsizigus marmoreus. Plackett,Burman design was used to determine the important nutrient factors. A central composite experimental design and surface response methodology were employed to optimize the factor levels. Prediction models for dry cell weight (DCW), polysaccharide outside cells (EPS) and polysaccharide inside cells (IPS) under important nutrient conditions were developed by multiple regression analysis and verified. By solving the equations, the optimal nutrient conditions for highest EPS production (9.62 g/L) were obtained at 6.77 g cornstarch/L, 36.57 g glucose/L, 3.5 g MgSO4/L and 6.14 g bean cake powder/L, under which DCW and IPS were 16.2 g/L and 1.46 g/L, close to the highest value under their corresponding optimal conditions. Optimal environmental conditions were obtained at 10% inoculation dose, 45 mL medium in a 250 mL flask, pH 6.5, 25C and 200 rpm according to the results of single-factor experiment design. PRACTICAL APPLICATIONS Hypsizigus marmoreus polysaccharides have many functional properties, including antitumor, antifungal and antiproliferative activities, and free-radical scavenging. Liquid cultivation could produce a higher yield of polysaccharides and more flexible sequential processing methods of H. marmoreus, compared with traditional solid-state cultivation. However, the cell growth and production of polysaccharides would be influenced by many factors, including nutrient conditions and environmental conditions in the liquid cultivation of H. marmoreus. Keeping the conditions at optimal levels can maximize the yield of polysaccharides. The study not only found out the optimal nutrient conditions and environmental conditions for highest cell growth and yield of polysaccharides, but also developed prediction models for these parameters with important nutrient variables. Yield of polysaccharide inside of cells was also studied as well as polysaccharides outside of cells and cell growth. The results provide essential information for production of H. marmoreus polysaccharides by liquid culture. [source] VIRULENCE RESPONSE OF A SALMONELLA TYPHIMURIUM HILA:LACZY FUSION STRAIN TO SPENT MEDIA FROM PURE CULTURES OF SELECTED BACTERIA AND POULTRY CECAL MIXED CULTUREJOURNAL OF FOOD SAFETY, Issue 3 2002J.D. NUTT ABSTRACT Virulence gene expression in Salmonella is triggered by a variety of environmental factors including changes in the gastrointestinal environment of birds during different dietary regimes. The objective of this study was to determine if growth of specific microorganisms alters the environmental conditions sufficiently to signal Salmonella Typhimurium virulence response. Spent media was obtained from a Salmonella Typhimurium hilA:lacZY fusion strain, a poultry Salmonella Typhimurium strain, Eschcrichia coli K12, and Lactobacillus caseii Spent media samples were collected after 2, 4, 8 and 24 h of growth in brain heart infusion broth (BHI) and M9 media, ,-galactosidase assays were performed on the samples to determine virulence expression. Virulence response to Salmonella, spent media was 2-fold greater than Lactobacillus spent media at 4, 8 and 24 h growth (P < 0.05). Virulence expression almost doubled when exposed to Salmonella Typhimurium (NONA) spent media compared to mixed culture spent media at 4 h, and Salmonella Typhimurium (NONA) was significantly higher than mixed culture spent media at 24 h (P < 0.05). Based on these results, it appears that growth of similar bacterial species may alter the composition of rich media sufficiently to influence virulence. [source] CULTURE OF THE HETEROTROPHIC DINOFLAGELLATE PROTOPERIDINIUM CRASSIPES (DINOPHYCEAE) WITH NONCELLULAR FOOD ITEMS,JOURNAL OF PHYCOLOGY, Issue 4 2008Aika Yamaguchi The genus Protoperidinium is an assemblage of heterotrophic dinoflagellates, several species of which have been successfully cultured in the past using various photosynthetic algae as a food source. We succeeded in culturing Protoperidinium crassipes (Kof.) Balech on three separate occasions for periods ranging from 2 to 21 months using rice flour as a food source. In these cultures, unusual small types of cells that were never observed to actively feed sometimes appeared. We confirmed that P. crassipes in culture exhibited bioluminescence. [source] BIOREMEDIATIVE POTENTIAL OF CHROMULINA FREIBURGENSIS IN CULTURE FROM THE BERKELEY PITJOURNAL OF PHYCOLOGY, Issue 2001Article first published online: 24 SEP 200 Dakel, S. M.1 & Mitman, G. G.2 1Department of Environmental Engineering; 2Department of Biological Sciences, Montana Tech of The University of Montana, Butte, MT 59701 USA The Berkeley Pit, part of the largest Superfund site in the United States, is an open-pit copper mine that operated from 1955 through 1982. Today, the Berkeley Pit contains approximately 1200 billion liters of metal laden water with an average pH of 2.7, and 12 grams/liter of dissolved solids. The principle dissolved ions include aluminum, arsenic, calcium, cadmium, copper, iron, potassium, magnesium, manganese, sulfates, and zinc. A species from Division Chrysophyta,Chromulina freiburgensis Dofl. was isolated from this extreme environment. This species has been tested in the laboratory through a series of controlled experiments to determine bioremediative potential. Optimal temperature was determined by monitoring growth with cell counts at temperatures ranging from 5°C to 40°C . The optimal nutrient ratio was determined by varying nitrogen (NaNO3) and phosphorus (Na2HPO4) levels. An experimental matrix varying nutrients was developed to test for bioremediative potential which included: initial and final pH measurements; initial and final Ion Chromatography Pairing,Atomic Emission Spectrometry (ICP-AES) for dissolved metals; and examination of final samples under Transmission Electron Microscopy (TEM). From these experiments, Chromulina freiburgensis was found to grow optimally in Berkeley Pit surface water with cell densities reaching ten million cells per milliliter at 10°C with additions of 50 mg NaNO3/L and 5 mg Na2HPO4/L. This large biomass was also found to increase diversity and abundance of heterotrophs. At the optimal nutrient level, this species was found to increase pH from 2.21 to 2.47 over 90 days. Significant removal of calcium, iron, nickel, and silica was observed. [source] SCHWANN CELL APOPTOSIS IN TISSUE CULTURE FOLLOWING THE ADMINISTRATION OF PRO-INFLAMMATORY CYTOKINESJOURNAL OF THE PERIPHERAL NERVOUS SYSTEM, Issue 1 2000E. Scarpini In immune-mediated demyelination of the nervous system, glial cell apoptosis has been observed recently; however, the relevance of the phenomenon and the characterization of the involved molecules are still controversial. Cytokines are secreted by many cells, including inflammatory and glial cells, and appear to play a relevant role in the peripheral nervous system (PNS) immuno-mediated demyelination, being active in promoting the damage to Schwann cells, myelin, and axons. Even though the exact role of the different cytokines is at present uncertain, they have a sequential different expression in PNS immune-mediated demyelination and could induce apoptotic death of Schwann cells in the vicinity of the inflammatory reaction via the expression of CD95 (Apo1/Fas). This study has been designed to detect in rat primary Schwann cell tissue cultures whether the administration of IL-1B and IFN-y can induce cell death. Identification of apoptotic Schwann cell was performed by morphological, immunohistochemical, and electron-microscopy analysis. Our results show that Schwann cells stimulated by proinflammatory cytokines IL-1B and IFN-y show morphological evidence of nuclear chromatin condesation at the DAPI staining and are TUNEL positive. The same features of apoptotic cell death were observed by electron microscopy. These findings provide evidence to support the hypothesis that cytokines can directly damage Schwann cells in disorders of the PNS. [source] INTRODUCTION: COMPARATIVE CIVIC CULTUREJOURNAL OF URBAN AFFAIRS, Issue 4 2008LAURA A. REESE ABSTRACT:,This symposium presents a subset of findings from a larger multicity research project using a single operational and methodological scheme to explore the nature of civic culture. The overall purpose is to explore civic cultures in an array of larger cities, test an initial typology of civic culture, and begin to examine the connections between civic culture and local policy. The articles in the symposium make clear that it is possible to empirically identify a parsimonious taxonomy of local civic cultures focusing on systems of community power, values, and decision-making. While many questions about the internal dynamics of each type remain to be answered, the civic cultures identified here appear empirically distinct and theoretically logical. Future research and dialogue need to focus on defining what culture is and what it is not, and then move to explore the linkages between the elements of civic culture and ultimately to local policy. [source] HOW TO RECTIFY UNFAIR TRADE PRACTICES AND TO ESTABLISH APPROPRIATE SUPPLY CHAINS AND BETTER BUSINESS CULTURE UNDER THE GLOBAL MARKET ECONOMYPACIFIC ECONOMIC REVIEW, Issue 5 2009Tsugio Ide Banning unfair trade practices stands alongside private monopolization and the unjust restraint of trade as a key theme in competition policy. However, it poses much greater difficulties to deal with the matter than either private monopolization or unjust restraint of trade. In recent years, ongoing economic globalization, advances in information communication technology and other factors have wrought major changes in the traditional supply chain: for example, in subcontracting structure. Given the role of small and medium enterprises in underpinning economic growth, lifting the basic quality and performance level of these firms and improving business conditions for them have emerged as key policy themes. New efforts are needed to establish fair trade as a business practice and to create a new business culture in corporation with competition policy, small and medium enterprise policy and business ethics, such as Corporate Social Responsibility (CSR) practices. [source] SODOHOMÉ CULTURE: OTHER FINDSACTA ARCHAEOLOGICA, Issue 1 2009Article first published online: 5 JUL 2010 No abstract is available for this article. [source] CRITICISM OF LITERATURE AND CRITICISM OF CULTURERATIO, Issue 4 2009Stein Haugom Olsen There is a class of critics who are dissatisfied with the academic status of literary criticism and who want to re-establish for literary criticism the status it possessed in the early and mid nineteenth century as simultaneously cultural and social criticism. This is an impossible task. The ,cultural critics' of the nineteenth century possessed their authority because they were without competition and because they could command the attention and respect of the whole of the literate audience. However, at the end of the nineteenth century intellectual authority came to be based in specialised academic disciplines and individual authority was undermined and ultimately disappeared. At the same time, the arrival of universal literacy in Britain fragmented and ultimately destroyed the generally educated audience to which the cultural critics addressed themselves. Consequently there is today no role for the cultural critic. Literary critics cannot speak with authority about social, political, or cultural questions. They can, however, speak with authority about literature. Whether or not this criticism can be grounded in disciplinary knowledge, it serves a necessary function for an audience that no longer possesses the skill of reading literary works and lacks the background knowledge that is necessary to make sense of literature. [source] RELIGIOUS CULTURE AND HISTORICAL CHANGE: VATICAN II ON RELIGIOUS FREEDOMTHE HEYTHROP JOURNAL, Issue 5 2008M. JOHN FARRELLY O.S.B. At Vatican II and since Vatican II there have been Catholics who have held that the Council's teaching on religious freedom is in contradiction to the Church's earlier teaching and practice. The Council defended it as a legitimate development of doctrine in part through claiming that changing human experience in history shows us only gradually what human dignity entails, and the Church learns from this experience. True, the Council's teaching is in part a denial of its earlier teaching and practice. The present article defends the legitimacy of this development through showing that there is a change of paradigm by which the Church now views this issue, a change that includes both continuity and discontinuity. This reliance on what is revealed to us by changing human experience is accepted by the Church only when it sees it as critically evaluated by an adequate philosophy and as in accord with Christian revelation, but its acceptance moves us to a growth in our understanding of revelation itself. [source] DOCUMENTING LOCAL CULTURE: AN INTRODUCTORY FIELD SCHOOLANNALS OF ANTHROPOLOGICAL PRACTICE, Issue 1 2004Philip B. Stafford This chapter provides a detailed description of a three-week summer residential field school conducted in Bloomington, Indiana, in 2000 and 2001. Following a model developed by David A. Taylor of the American Folklife Center, the school provided instruction and hands-on experience to students interested in learning methods of cultural fieldwork including interviewing, photography and participant-observation. Additionally, students learned methods of documentation including archiving and exhibition through radio, video, and other public displays. Each field school was organized around a salient local theme: the public square, in year 1 and community and disability, in year 2. This chapter summarizes the multiple practical challenges that students and instructors face in conducting a successful fieldwork school, with reference to transportation, supervision, field ethics, meals, residential accommodations, equipment, teamwork, and exiting the field. [source] KARL MANNHEIM AND ALOIS RIEGL: FROM ART HISTORY TO THE SOCIOLOGY OF CULTUREART HISTORY, Issue 4 2009JEREMY TANNER Karl Mannheim and Erwin Panofsky took Alois Riegl's concept of Kunstwollen as their point of departure in the development of the sciences of cultural interpretation. This article seeks to elucidate the very different readings of Riegl made by Mannheim and Panofsky, and to show how the sociological appropriation and transformation of the concept of Kunstwollen was central to the development of Mannheim's sociology of knowledge, and in particular to the analysis of ,styles of thought' in his classic study Conservative Thought (1927). The limited reception of Mannheim's synthesis of sociology and art history is interpreted in the intellectual context of Britain immediately after the 1939,45 war. [source] THE NORTH LOOKS SOUTH: GIORGIO VASARI AND EARLY MODERN VISUAL CULTURE IN THE KINGDOM OF NAPLESART HISTORY, Issue 4 2008AISLINN LOCONTE This article considers how the artist, writer and critic Giorgio Vasari (1511,1574) in his canonical text Le vite de più eccellenti pittori scultori e architettori characterized the artists working in the city of Naples and the monuments they produced. Through his own experience working in Naples (1544,45) Vasari acquired significant first-hand knowledge of the city and its artistic culture. His account of his experiences and those of other artists who worked in the city portrays Naples as lacking a dominant local artistic tradition and the support of active and interested patrons. With the intention of furthering the central themes and aims of his text, Vasari created a carefully constructed image of Naples as a rhetorical foil for the alleged superior virtue and strength of northern artists and urban centres where art and architecture played a key role in civic pride. [source] TRANSFERENCE, COUNTERTRANSFERENCE, SOCIETY AND CULTURE: BEFORE AND DURING THE FIRST ENCOUNTERBRITISH JOURNAL OF PSYCHOTHERAPY, Issue 4 2001Antonio Suman ABSTRACT Our contribution focuses on the first encounter with the patient and on the social and cultural context in which it takes place; we believe that psycho-therapy begins with the very first encounter, whether or not it leads to a therapeutic relationship. Before the first encounter, the patient produces conscious and unconcious fantasies, sometimes even dreams, about the therapy, the therapist and the encounter itself; these fantasies constitute a sort of preformed, cultural transference. Besides the preformed transference, an actual transference relationship begins to develop, becoming activated in the patient by contact with the real person of the therapist, and in the therapist by contact with the real person of the patient, blending with the culturally preformed transference. This primitive transference can rapidly determine the outcome of the first encounter as well as of the actual project of entering therapy. [source] POST-PASTEURIAN CULTURES: The Microbiopolitics of Raw-Milk Cheese in the United StatesCULTURAL ANTHROPOLOGY, Issue 1 2008HEATHER PAXSON ABSTRACT Out of concern for public health, the U.S. government bans the sale of cheese made from unpasteurized milk if it is aged fewer than 60 days. But while the FDA views raw-milk cheese as a potential biohazard, riddled with pathogenic microbes, aficionados see it as the reverse: as a traditional food processed for safety by the action of good microbes. This article offers a theoretical frame for understanding the recent rise in American artisan raw-milk cheese production, as well as wider debates over food localism, nutrition, and safety. Drawing on ethnographic interviews with cheese makers and purveyors and on participant-labor conducted on a Vermont sheep dairy farm, I develop the concept of microbiopolitics to analyze how farmer,cheese makers, industry consultants, retailers, and consumers negotiate Pasteurian (hygienic) and post-Pasteurian (probiotic) attitudes about the microbial agents at the heart of raw-milk cheese and controversies about this nature,culture hybrid. [source] HEALING IN INDIGENOUS CULTURESINTERNATIONAL REVIEW OF MISSION, Issue 356-357 2001Article first published online: 25 MAR 200 No abstract is available for this article. [source] VIRULENCE RESPONSE OF A SALMONELLA TYPHIMURIUM HILA:LACZY FUSION STRAIN TO SPENT MEDIA FROM PURE CULTURES OF SELECTED BACTERIA AND POULTRY CECAL MIXED CULTUREJOURNAL OF FOOD SAFETY, Issue 3 2002J.D. NUTT ABSTRACT Virulence gene expression in Salmonella is triggered by a variety of environmental factors including changes in the gastrointestinal environment of birds during different dietary regimes. The objective of this study was to determine if growth of specific microorganisms alters the environmental conditions sufficiently to signal Salmonella Typhimurium virulence response. Spent media was obtained from a Salmonella Typhimurium hilA:lacZY fusion strain, a poultry Salmonella Typhimurium strain, Eschcrichia coli K12, and Lactobacillus caseii Spent media samples were collected after 2, 4, 8 and 24 h of growth in brain heart infusion broth (BHI) and M9 media, ,-galactosidase assays were performed on the samples to determine virulence expression. Virulence response to Salmonella, spent media was 2-fold greater than Lactobacillus spent media at 4, 8 and 24 h growth (P < 0.05). Virulence expression almost doubled when exposed to Salmonella Typhimurium (NONA) spent media compared to mixed culture spent media at 4 h, and Salmonella Typhimurium (NONA) was significantly higher than mixed culture spent media at 24 h (P < 0.05). Based on these results, it appears that growth of similar bacterial species may alter the composition of rich media sufficiently to influence virulence. [source] UREASE GENE SEQUENCES FROM ALGAE AND HETEROTROPHIC BACTERIA IN AXENIC AND NONAXENIC PHYTOPLANKTON CULTURES,JOURNAL OF PHYCOLOGY, Issue 3 2009Kristopher M. Baker While urea has long been recognized as an important form of nitrogen in planktonic ecosystems, very little is known about how many or which phytoplankton and bacteria can use urea as a nitrogen source. We developed a method, targeting the gene encoding urease, for the direct detection and identification of ureolytic organisms and tested it on seven axenic phytoplankton cultures (three diatoms, two prymnesiophytes, a eustigmatophyte, and a pelagophyte) and on three nonaxenic Aureococcus anophagefferens Hargraves et Sieburth cultures (CCMP1784 and two CCMP1708 cultures from different laboratories). The urease amplicon sequences from axenic phytoplankton cultures were consistent with genomic data in the three species for which both were available. Seven of 12 phytoplankton species have one or more introns in the amplified region of their urease gene(s). The 63 urease amplicons that were cloned and sequenced from nonaxenic A. anophagefferens cultures grouped into 17 distinct sequence types. Eleven types were related to ,-Proteobacteria, including three types likely belonging to the genus Roseovarius. Four types were related to ,-Proteobacteria, including two likely belonging to the genus Marinobacter, and two types were related to ,-Proteobacteria. Terminal restriction fragment length polymorphism (TRFLP) analyses suggested that the sequenced amplicons represented approximately half of the diversity of bacterial urease genes present in the nonaxenic cultures. While many of the bacterial urease sequence types were apparently lab- or culture-specific, others were found in all three nonaxenic cultures, suggesting the possibility of specific relationships between these bacteria and A. anophagefferens. [source] UNCOUPLING OF SILICON COMPARED WITH CARBON AND NITROGEN METABOLISMS AND THE ROLE OF THE CELL CYCLE IN CONTINUOUS CULTURES OF THALASSIOSIRA PSEUDONANA (BACILLARIOPHYCEAE) UNDER LIGHT, NITROGEN, AND PHOSPHORUS CONTROL1JOURNAL OF PHYCOLOGY, Issue 5 2002Pascal Claquin The elemental composition and the cell cycle stages of the marine diatom Thalassiosira pseudonana Hasle and Heimdal were studied in continuous cultures over a range of different light- (E), nitrogen- (N), and phosphorus- (P) limited growth rates. In all growth conditions investigated, the decrease in the growth rate was linked with a higher relative contribution of the G2+M phase. The other phases of the cell cycle, G1 and S, showed different patterns, depending on the type of limitation. All experiments showed a highly significant increase in the amount of biogenic silica per cell and per cell surface with decreasing growth rates. At low growth rates, the G2+M elongation allowed an increase of the silicification of the cells. This pattern could be explained by the major uptake of silicon during the G2+M phase and by the independence of this process on the requirements of the other elements. This was illustrated by the elemental ratios Si/C and Si/N that increased from 2- to 6-fold, depending of the type of limitation, whereas the C/N ratio decreased by 10% (E limitation) or increased by 50% (P limitation). The variations of the ratios clearly demonstrate the uncoupling of the Si metabolism compared with the C and N metabolisms. This uncoupling enabled us to explain that in any of the growth condition investigated, the silicification of the cells increased at low growth rates, whereas carbon and nitrogen cellular content are differently regulated, depending of the growth conditions. [source] TEMPERATURE INDUCED PHOTOINHIBITION IN OUTDOOR CULTURES OF MONODUS SUBTERRANEUSJOURNAL OF PHYCOLOGY, Issue 2000A. Vonshak Outdoor algal cultures are continuously exposed to changes in environmental conditions, particularly irradiance and temperature. While the changes in light intensity take place in a range of one to two hours, the increase in temperature is a slower process and takes about four to five hours. This de-synchronization between the two important environmental factors governing photosynthesis and growth of algae results in a unique stress condition where photoinhibition can be induced at relatively low light intensity. Outdoors the early morning culture temperature was found to be about 12 to 14° C, and reaches 25 to 28° C at mid-day. In an experiment, such a natural temperature regime was compared to another one in which the morning temperature of the culture was increased to 20° C by using a heating system. A fast decline in the maximal photochemical efficiency of PSII (Fv/Fm) was observed starting as soon as sunrise. The decline was faster in the non-heated culture and was to a lower value. The diurnal changes in the electron transfer rate (ETR) and in the non-photochemical quenching (NPQ) of the cultures, indicated that the early morning exposure of cells to sub-optimal temperature results in a fast inactivation of PSII activity which was reflected in an inhibition of the photosynthetic activity even when the two cultures finally reached the same temperature at mid-day. Thus, under the same light and temperature mid-day conditions the ETR was higher and the NPQ was significantly lower in the heated culture. Significant changes in productivity of the cultures also were observed. [source] THE BROCH CULTURES OF ATLANTIC SCOTLAND: ORIGINS, HIGH NOON AND DECLINE.OXFORD JOURNAL OF ARCHAEOLOGY, Issue 3 2008200 BC, PART 1: EARLY IRON AGE BEGINNINGS c.700 Summary. A new overview of the broch and wheelhouse-building cultures is offered because recent comparable attempts have omitted substantial amounts of relevant data, such as discussion of the most plausible broch prototypes and of the details of the material cultural sequence, particularly the pottery. Well dated Early Iron Age roundhouse sites have often been described, but promontory forts of the same period, showing the specialized broch hollow wall, have not. The example at Clickhimin, Shetland, is now reliably dated to the sixth century BC at the latest and the associated pottery shows clear links with north-west France. Another unexcavated example in Harris can be restored in some detail and shows how these sites were probably used. The pivotal role of Shetland in the emergence of the new culture is confirmed by the early dating of the broch at Old Scatness to the fourth/third centuries BC. However, a separate development of the round broch tower seems also to have occurred in the west, in the third/second centuries BC. English Early Iron Age pottery is also prominent in some of the earliest sites in the west and north. The picture is of a dynamic, maritime zone open to influences from several remote regions. [source] YUANMING YUAN/VERSAILLES: INTERCULTURAL INTERACTIONS BETWEEN CHINESE AND EUROPEAN PALACE CULTURESART HISTORY, Issue 1 2009GREG M. THOMAS This article examines intercultural interactions between Europe and China in the eighteenth century. It focuses on China's greatest imperial palace, Yuanming Yuan, detailing its pivotal importance in contact with Europe. The first section compares Yuanming Yuan with Versailles in order to demonstrate that beneath their mutually exotic appearances lay similarities in how systems of art, architecture and gardens were deployed to reinforce structurally similar court societies. The second section argues that it was this systemic compatibility that made it possible for French and British cultural agents to make sense of Chinese arts through the playful distortions of chinoiserie. Mirroring Europe, the Chinese court simultaneously appropriated European arts in a symmetrical phenomenon of ,Européenerie'. This case study shows that unlike many later Orientalist relationships, the unique compatibility between China and Europe in the eighteenth century made it possible for each society to make the other culturally meaningful. [source] THE LIMITS OF INTIMATE CITIZENSHIP: REPRODUCTION OF DIFFERENCE IN FLEMISH-ETHIOPIAN ,ADOPTION CULTURES'BIOETHICS, Issue 7 2010KATRIEN DE GRAEVE ABSTRACT The concept of ,intimate citizenship' stresses the right of people to choose how they organize their personal lives and claim identities. Support and interest groups are seen as playing an important role in the pursuit of recognition for these intimate choices, by elaborating visible and positive cultures that invade broader public spheres. Most studies on intimate citizenship take into consideration the exclusions these groups encounter when negotiating their differences with society at large. However, much less attention is paid to the ways in which these groups internalize the surrounding ideologies, identity categories and hierarchies that pervade society and constrain their recognition as full citizens. In contrast, this paper aims to emphasize the reproduction of otherness within alternative spheres of life, and to reveal the ambiguities and complexities involved in their dialectic relationship with society at large. To address this issue, the paper focuses on the role that ,adoption cultures' of Flemish adoptive parents with children from Ethiopia play in the pursuit of being recognized as ,proper' families and full citizens. The ethnographic research among adoptive parents and adoption professionals shows a defensive discourse and action that aims at empowering against potential problems, as well as a tendency to other the adoptive child by pathologizing its non-normativity. By showing the strong embeddedness of adoptive families' practices of familial and cultural construction in larger cultural frames of selfing and othering, characterized by biologism and nativism, one begins to understand the limits of their capacity to realize full citizenship. [source] Etiologic spectrum and pattern of antimicrobial drug susceptibility in bacterial meningitis in Sokoto, NigeriaACTA PAEDIATRICA, Issue 8 2000FE EmeleArticle first published online: 2 JAN 200 Etiologic agents of meningitis were prospectively investigated among patients admitted to Usman Danfodio University Teaching Hospital, Sokoto. Of 1097 cerebrospinal fluid (CSF) samples submitted to the microbiology laboratory from various wards of the hospital, 289 (26%) were microscopically, culturally and/or serologically proven to be bacterial meningitis. The etiologic spectrum was as follows: Neisseria meningitidis (61%), Streptococcus pneumoniae (18%), Haemophilus influenzae (10%), Staphylococcus aureus (6%), Coliform bacilli (3%), Escherichia coli (0.7%), Mycobacterium tuberculosis (0.7%), Listeria monocytogenes (0.4%), Flavobacterium meningosepticum (0.4%) and Pseudomonas putrifasciens (0.4%). Bacterial meningitis was most prevalent (195 or 68%) among children aged 1-9 y, while adults and neonates were least affected. Coliform bacilli caused five of eight neonatal cases. Males were more frequently affected than females (x2=12.50;p < 0.05). Culture and microscopy were comparatively less efficient than the search for bacterial antigens, especially in the diagnosis of Haemophilus meningitis. Antimicrobial susceptibility of N. meningitidis to ampicillin and benzyl penicillin reduced progressively over the years (F = 406.98;p < 0.001). Nineteen (11%) of the isolates (5 Meningococci, 7 Staph. aureus, 1 Haem. influenza and 6 others) showed simultaneous resistance to chloramphenicol, ampicillin and benzyl penicillin. [source] | ||||||||||||||||||||||||||||||||||||||||||||||