Electroplating eliminates gas leakage in brazed areas

Electroplating method seals brazed or welded joints against gas leakage under high pressure. Any conventional electroplating process with many different metal anodes can be used, as well as the build up of layers of different metals to any required thickness

EMPIRICAL TESTS OF THE ARGUMENT THAT CONSUMERS VALUE STABLE RETAIL MILK PRICES

Existing policy allows interstate dairy compacts if they serve a compelling public interest. Compact supporters argue consumers benefit from retail price stability, but no supporting evidence was found. Milk demand systems were estimated using scanner data and four measures of price volatility. Price volatility defined as forecast errors influenced demand, but did not systematically depress demand. Response was more elastic to unanticipated than anticipated price changes, possibly explaining the higher elasticities often observed in scanner data studies.dairy compacts, dairy demand, price instability, scanner data, Demand and Price Analysis,

SOURCES OF IRREVERSIBLE CONSUMER DEMAND IN U.S. DAIRY PRODUCTS

Irreversible demand is relevant to pricing strategy and demand modeling with weekly data. Competing explanations include loss aversion and stockpiling. Irreversible models for U.S. cheese and table spreads suggest that stockpiling dominates loss aversion. Price smoothing may be an inappropriate strategy in this case. Reversible demand models applied to weekly data may overestimate own-price elasticities.Demand and Price Analysis,

PRICE DISCOVERY IN THE EGG INDUSTRY

Formula pricing of eggs is typically based on quotations issued by Urner Barry Publications, and egg producers worry that the quotes are systematically lower than equilibrium levels. Egg Clearinghouse, Inc. (ECI) provides a public forum for cash trading, intended to facilitate price discovery. Evidence from 1994-95 does not suggest that Urner Barry understands producer level prices on average, Granger causality tests indicate a feedback relationship between the Urner Barry quotes and ECI prices, with ECI leading during price upswings. Lead times appear to have fallen since the late 1970s and early 1980s, confirming earlier predictions regarding market efficiency.Demand and Price Analysis,

Diabetic foot disease and oedema

Diabetic foot ulcers (DFUs) are common and disabling, giving rise to significant morbidity and mortality as well as worldwide socioeconomic problems. Despite treatment, DFUs readily become chronic wounds and may lead to major lower limb amputations. The pathogenesis of DFUs is complex and the main aetiologies are peripheral neuropathy, ischaemia from peripheral arterial disease and biomechanical abnormalities. Microvascular disease is also a significant problem for people with diabetes and contributes to foot ulceration. Successful management of DFUs consists of debridement, infection control, the use of offloading appliances and revascularisation where necessary. Foot ulcers are usually associated with infection and inflammation which lead to surrounding oedema of the foot. Standard offloading devices such as total contact casts and removable cast walkers do not actively reduce foot oedema. There is promising evidence that active oedema reduction by intermittent pneumatic compression in the diabetic foot improves ulcer healing. The objective of this article is to review the association of foot oedema and DFUs, including the role of appliances which reduce oedema. The information presented is vital to those involved in the management of DFUs. © The Author(s) 2012

Immigrants Assimilate as Communities, not just as Individuals

There is a large econometric literature that examines the economic assimilation of immigrants in the United States and elsewhere. On the whole immigrants are seen as atomistic individuals assimilating in a largely anonymous labour market, a view that runs counter to the spirit of the equally large literature on ethnic groups. Here we argue that immigrants assimilate as communities, not just as individuals. The longer the immigrant community has been established the better adjusted it is to the host society and the more the host society comes to accept that ethnic group. Thus economic outcomes for immigrants should depend not just on their own characteristics, but also on the legacy of past immigration from the same country. In this paper we test this hypothesis using data from a 5 percent sample of the 1980, 1990 and 2000 US censuses. We find that history matters in immigrant assimilation: the stronger is the tradition of immigration from a given source country, the better the economic outcomes for new immigrants from that source.immigrant earnings, migration history, ethnic groups.

Do Output Contractions Trigger Democratic Change?

Does faster economic growth increase pressure for democratic change, or reduce it? Using data for 154 countries for the period 1963-2007, we examine the short-run relationship between economic growth and moves toward and away from greater democracy. To address the potential endogeneity of economic growth, we use variation in precipitation, temperatures, and commodity prices as instruments for a country’s rate of economic growth. Our results indicate that more rapid economic growth reduces the short-run likelihood of institutional change toward democracy. Output contractions due to adverse weather shocks appear to have a particularly important impact on the timing of democratic change.weather, democratization, economic growth, commodity prices

Do output contractions trigger democratic change?

Does faster economic growth increase pressure for democratic change, or reduce it? Using data for 154 countries for the period 1963-2007, we examine the short-run relationship between economic growth and moves toward and away from greater democracy. To address the potential endogeneity of economic growth, we use variation in precipitation, temperatures, and commodity prices as instruments for a country’s rate of economic growth. Our results indicate that more rapid economic growth reduces the short-run likelihood of institutional change toward democracy. Output contractions due to adverse weather shocks appear to have a particularly important impact on the timing of democratic change.economic growth, democratization, weather, commodity prices