Occupational beryllium exposure: Reconciling federal policies, regulations and contractor implementation guides to protect worker health

Beryllium is a widely distributed, highly toxic metal. When beryllium particulates enter the body, the body's defense mechanisms are engaged. When the body's defenses cannot easily remove the particulates, then a damage and repair cycle is initiated. This cycle produces chronic beryllium disease (CBD), a progressive, fibrotic respiratory involvement which eventually suffocates exposed individuals. ^ Beryllium disease is an occupational disease, and as such it can be prevented by limiting exposures. In the 1940s journalists reported beryllium deaths at Atomic Energy Commission (AEC) facilities, the Department of Energy's (DOE) predecessor organization. These reports energized public pressure for exposure limits, and in 1949 AEC implemented a 2 μg/m3 permissible exposure limit (PEL). ^ The limits appeared to stop acute disease. In contrast, CBD has a long latency period between exposure and diagnosable disease, between one and thirty years. The lack of immediate adverse health consequences masked the seriousness of chronic disease and pragmatically removed CBD from AEC/DOE's political concern. ^ Presently the PEL for beryllium at DOE sites remains at 2 μg/m 3. This limit does not prevent CBD. This conclusion has long been known, although denied until recently. In 1999 DOE acknowledged the limit's ineffectiveness in its federal regulation governing beryllium exposure, 10 CFR 850. ^ Despite this admission, the PEL has not been reduced. The beryllium manufacturer and AEC/DOE have a history of exerting efforts to maintain and protect the status quo. Primary amongst these efforts has been creation and promotion of disinformation within peer reviewed health literature which discusses beryllium, exposures, health effects and treatment, and targeting graduate school students so that their perspective is shaped early. ^ Once indoctrinated with incorrect information, professionals tend to overlook aerosol and respiratory mechanics, immunologic and carcinogenic factors. They then apply tools and perspectives derived from the beryllium manufacturer and DOE's propaganda. Conclusions drawn are incorrect. The result is: health research and associated policy is conducted with incorrect premises. Effective disease management practices are not implemented. ^ Public health protection requires recognition of the disinformation and its implications. When disinformation is identified, then effective health policies and practices can be developed and implemented. ^

Rules to limit snacking in front of the TV and childhood BMI status: Findings from the "Fun Families Study"

Childhood obesity is increasing at epidemic rates, and thus there is a need to target appropriate childhood behaviors that contribute to obesity. Many factors contribute to childhood weight status. The aim of this study was to look at relationships between parental rules to limit snacking while watching television and childhood weight status. The study looked at the presence of the behavior of snacking while watching television yesterday, congruence between child- and parent-reported perception of the presence of rules to limit snacking while watching television, and parent-reported frequency of children following rules to limit snacking while watching television. The outcomes were examined in a multi-ethnic population of children ages 6 to 9 years in Southeast Texas.^ This study was a cross-sectional secondary data analysis of the pilot program, Fun Families. This study examined baseline data from 202 parent-child dyads, which included both the control ( N= 101) and intervention groups (N= 101). Data were gathered using validated questions that were administered to 6-9 year old children and their primary caregiver (referred to as parent in the rest of the discussion) in Southeast Texas, between 2006 and 2008. The main study outcome was childhood weight status based on CDC BMI-for-age categories. The independent variables are (1) the presence of parental rules to limit snacking while watching television, (2) the congruence between child and parent about the presence of rules to limit snacking while watching television, and (3) the parent-reported frequency of the child following the rules to limit snacking while watching television. Chi-Square analyses were used to determine if weight status was different for (1) children who reported rules to limit snacking yesterday, (2) children who reported snacking, (3) children whose parents reported rules were present, and (4) those who had rule congruence with the parents not. Chi-Square analyses also examined if there was a difference in the presence of snacking behavior for children who reported rules, for children whose parents reported rules, and for those children who had congruence about rules. Linear regressions were used to determine if any of the studied variables predicted increased weight status or reported snacking while watching television yesterday.^ This study found that child-reported snacking yesterday was significantly different for children who reported rules (4.12, p= 0.04). Child-reported rules was significantly associated with (p= -0.14, α= 0.04) and predicted child-reported snacking yesterday (R 2 0.021, p= 0.04, t= -2.04, 95% CI -0.31, -0.01). There was statistical significant incongruence between child and parent perception about the presence of rules to limit snacking yesterday (15.06, p= 0.00). For this population, parent education level was significantly associated with child-reported rules (r= -0.16, p= 0.02), child-reported snacking yesterday (r= -0.15, p= 0.04), and parent-reported frequency of child following rules to limit snacking (r= 0.29, p= -0.01). Parent-reported speaking another language besides English at home was significantly associated with parent-reported rules (r= 0.17, p= 0.02).^ Although the studied variables did not show any significant associations or predictors for childhood weight status, the significant discord between parent and child perception about the presence of rules provides valuable information to future interventions that aim to reduce childhood weight status. Including the creation and enforcement of parental rules in interventions to reduce childhood weight status will be beneficial for future studies.^

Perspectivas sobre el turismo en la Comunidad Andina de Naciones : Análisis comparativo con el Mercosur

El proyecto de integración al que aspiran los países miembros de la Comunidad Andina de Naciones (can) tiene un carácter exhaustivo, que excede el ámbito de los acuerdos comerciales. En este contexto, la integración en materia de turismo ha despertado un interés creciente entre los gobiernos de América Latina y el Caribe, por su capacidad de generar divisas y favorecer la inversión privada, la creación de empleo, la inclusión y el encadenamiento de empresas pequeñas y comunidades locales. Asimismo, la actividad turística puede contribuir a reforzar la identidad regional y subregional de los esquemas de integración. El turismo es uno de los rubros económicos más importantes para los países en desarrollo y, a su vez, se lo reconoce como un factor que contribuye a la reducción de la pobreza y al crecimiento económico. Por ello, se lo debe considerar como una oportunidad para el desarrollo de los países de la can, sobre todo porque los miembros del bloque andino cuentan con una oferta turística diversificada compuesta por recursos naturales y culturales de gran atractivo. En el presente trabajo se analiza la evolución del flujo de turistas en los países de la Comunidad Andina de Naciones y se esboza un estudio comparativo con el bloque del mercosur. Luego, se elabora una matriz que permite observar, a primera vista, la magnitud del turismo emisivo intrarregional en ambos casos, así como determinar ciertas conclusiones a partir de los datos observados y comparados. Finalmente, se presentan algunas propuestas que los cuatro países de la CAN podrían desarrollar en el ámbito de la cooperación horizontal, en relación con la promoción conjunta y con la participación de las ciudades de la región en la red de Mercociudades

Perspectivas sobre el turismo en la Comunidad Andina de Naciones : Análisis comparativo con el Mercosur

El proyecto de integración al que aspiran los países miembros de la Comunidad Andina de Naciones (can) tiene un carácter exhaustivo, que excede el ámbito de los acuerdos comerciales. En este contexto, la integración en materia de turismo ha despertado un interés creciente entre los gobiernos de América Latina y el Caribe, por su capacidad de generar divisas y favorecer la inversión privada, la creación de empleo, la inclusión y el encadenamiento de empresas pequeñas y comunidades locales. Asimismo, la actividad turística puede contribuir a reforzar la identidad regional y subregional de los esquemas de integración. El turismo es uno de los rubros económicos más importantes para los países en desarrollo y, a su vez, se lo reconoce como un factor que contribuye a la reducción de la pobreza y al crecimiento económico. Por ello, se lo debe considerar como una oportunidad para el desarrollo de los países de la can, sobre todo porque los miembros del bloque andino cuentan con una oferta turística diversificada compuesta por recursos naturales y culturales de gran atractivo. En el presente trabajo se analiza la evolución del flujo de turistas en los países de la Comunidad Andina de Naciones y se esboza un estudio comparativo con el bloque del mercosur. Luego, se elabora una matriz que permite observar, a primera vista, la magnitud del turismo emisivo intrarregional en ambos casos, así como determinar ciertas conclusiones a partir de los datos observados y comparados. Finalmente, se presentan algunas propuestas que los cuatro países de la CAN podrían desarrollar en el ámbito de la cooperación horizontal, en relación con la promoción conjunta y con la participación de las ciudades de la región en la red de Mercociudades

Perspectivas sobre el turismo en la Comunidad Andina de Naciones : Análisis comparativo con el Mercosur

El proyecto de integración al que aspiran los países miembros de la Comunidad Andina de Naciones (can) tiene un carácter exhaustivo, que excede el ámbito de los acuerdos comerciales. En este contexto, la integración en materia de turismo ha despertado un interés creciente entre los gobiernos de América Latina y el Caribe, por su capacidad de generar divisas y favorecer la inversión privada, la creación de empleo, la inclusión y el encadenamiento de empresas pequeñas y comunidades locales. Asimismo, la actividad turística puede contribuir a reforzar la identidad regional y subregional de los esquemas de integración. El turismo es uno de los rubros económicos más importantes para los países en desarrollo y, a su vez, se lo reconoce como un factor que contribuye a la reducción de la pobreza y al crecimiento económico. Por ello, se lo debe considerar como una oportunidad para el desarrollo de los países de la can, sobre todo porque los miembros del bloque andino cuentan con una oferta turística diversificada compuesta por recursos naturales y culturales de gran atractivo. En el presente trabajo se analiza la evolución del flujo de turistas en los países de la Comunidad Andina de Naciones y se esboza un estudio comparativo con el bloque del mercosur. Luego, se elabora una matriz que permite observar, a primera vista, la magnitud del turismo emisivo intrarregional en ambos casos, así como determinar ciertas conclusiones a partir de los datos observados y comparados. Finalmente, se presentan algunas propuestas que los cuatro países de la CAN podrían desarrollar en el ámbito de la cooperación horizontal, en relación con la promoción conjunta y con la participación de las ciudades de la región en la red de Mercociudades

Distribution of polycyclic aromatic hydrocarbons in eolian and eolian-deluvial sediments from the North Iceland

This work considers results of a study of Holocene cover sediments in Iceland. They are largely composed of wind-transported palagonitized hyaloclastite particles and coeval horizons of acid and basic tephras. It is established that polyciclic aromatic hydrocarbons (PAH) are released from basaltic glass in natural environments only in case of intense physicochemical alteration and destruction of its structure. This process does not influence PAH composition and their quantitative proportions. No new PAH formed during several thousands of years in Holocene section. Hydrocarbons are transferred from fixed state in basaltic glass into free state in palagonites practically without any changes. PAH were mainly redeposited by winds, derived together with palagonite from weathered hyaloclastites, and precipitated from atmosphere with tephra during eruptions.

(Table 1) Activity of alkali phosphatase in suspended matter at 20°C and environmental temperatures, and recycling time of organic phosphorus in the Barents and Norwegian seas

Alkali phosphatase activity and hydrochemical structure of waters in the Barents and Norwegian seas were investigated. In a sea with the seasonal bioproduction cycle alkali phosphatase activity is also seasonal, rising with trophic level of waters. At the end of hydrological and biological winter activity is practically zero. Alkali phosphatase activity is especially important in summer, when plankton has consumed winter supply of phosphate in the euphotic layer and nutrient limitation of primary production begins. In summer production and destruction cycle, apparent time for recycling of phosphorus by phosphatase in suspended matter in the euphotic layer of the Barents Sea and Norwegian Sea averages from 7 to 30 hours.

Morphometric data for Globigerinoides sacculifer and Globorotalia tumida (size and Fourier coefficients) and temperature proxy reconstructions (UK37' and Tex86H) from samples from ODP sites 165-999/165-1000 and 202-1241 spanning the last 10Ma

Sediment samples from both Site 165-999/165-1000 (Atlantic) and Site 202-1241 (Pacific) were chosen at 1Ma intervals over the period 0.3-9.3Ma. Samples were washed and sieved <150µm. Splits of the sediment fraction were picked completely to obtain, where possible, at least 30 specimens each of planktic foraminifer species Globigerinoides sacculifer and Globorotalia tumida, on which outline analysis (Fourier) was performed. Sea surface and thermocline temperatures were reconstructed from palaeoenvironmental proxies (UK37' and Tex86H respectively).

Winner-Take-All Contention of Innovation under Globalization: A Simulation Analysis and East Asia's Empirics

This paper sets out to examine how innovation enhances export competitiveness: The proposition that export volume becomes enhanced as more productivity-enhancing innovation is captured by the exporting economy is the focus of this study. From a Schumpeterian perspective, innovation can be characterized by continuous creation and subsequent diffusion of newer technologies on the basis of the exporters' existing capital stock. Then we highlight the theoretical possibility that concentration of innovative activities in a small group of "winner" economies would lead to larger shares of "winner" economies' exports of innovation-active commodities than those commodities for which technology involved is already mature. The world's export data corroborates this theoretical prediction overall, and a focus upon East Asia has revealed the region's increasing resort to technology-intensive commodity sectors, which has presumably been enabled through attracting technology-bearing inward foreign direct investment. Considering the overall gains from innovation, acceleration of full "cycle" of innovation and imitation might be a desirable option.

Knowledge Creation as a Square Dance on the Hilbert Cube

This paper presents a micro-model of knowledge creation and transfer in a small group of people. Our model incorporates two key aspects of the cooperative process of knowledge creation: (i) heterogeneity of people in their state of knowledge is essential for successful cooperation in the joint creation of new ideas, while (ii) the very process of cooperative knowledge creation a¤ects the heterogeneity of people through the accumulation of knowledge in common. The model features myopic agents in a pure externality model of interaction. In the two person case, we show that the equilibrium process tends to result in the accumulation of too much knowledge in common compared to the most productive state. Unlike the two-person case, in the four person case we show that the equilibrium process of knowledge creation may converge to the most productive state. Equilibrium paths are found analytically, and they are a discontinuous function of initial heterogeneity.

East Asia's Economic Development cum Trade "Divergence"

This paper addresses some salient features of how some of "successful" East Asian economies have been faring in terms of enhancing their export competitiveness. That export becomes more divergent in terms of its unit price as more technology-enhancing economic activity is undertaken within an economy, is the primary message that this study conveys. This is indeed what Schumpeter had addressed in conjunction with his "creative destruction" thesis. From this perspective, East Asia's export-led industrialization has been attained through a particular policy focus upon high "trade divergence" sectors underpinned by a generally high level of manufacturing flexibility. The experience of Malaysia's development serves as the strong case in point. As an East Asia-wide FTA is expected to facilitate "divergent" export-led industrialization through enhanced knowledge interaction, this dynamic or "divergent" impact that knowledge creation could exert should come to the fore of relevant policy arguments, together with static consideration of trade creation and diversion. A formal statistical test of the "divergence hypothesis" above is called for with a view to building upon this preliminary study.

Are Job Networks Localized in a Developing Economy? Search Methods for Displaced Workers in Thailand

Effects of localized personal networks on the choice of search methods are studied in this paper using evidence of displaced workers by establishment closure in Thailand Labor Force Survey, 2001. For the blocks/villages level, there is less significant evidence of local interactions between job-seekers and referrals in developing labor markets. The effects of localized personal networks do not play an important role in the probability of unemployed job-seekers seeking assistance from friends and relatives. Convincing evidence from the data supports the proposition that both self-selection of individual background-like professions and access to large markets determine the choice of job search method.