During 1951 and 1952 various leguminous plants from the grounds, gardens, and greenhouses of Vassar College were collected and examined for the presence of root nodules. On the day of collection nodules were plated with medium # 79 (Fred and Waksman, 1928). Nodules from soybeans, clover, peas, beans, alfalfa, lespedeza, hairy vetch and birdsfoot trefoil contained viable rhizobia. On the same da...

Tablet (40 mg a.i./tablet) and granular (2% a.i.) formulations of diflubenzuron, a chitin synthesis inhibitor, insect growth regulator, were evaluated for larvicidal efficacy against the larvae of Aedes aegypti (L.) in water-storage containers under field conditions in Thailand. Each formulation was applied to 200-1 clay jars at 5 different dosages (0.02, 0.05, 0.1, 0.5 and 1 mg/l a.i.). The ja...

Table 1. Average colony size of the six quality control strains: Anaerobic chambers and anaerobic jars are used to provide ancomparison of four methods for cultivating anaerobic bacteria. aerobic conditions required to cultivate anaerobic bacteria. All operations and manipulations of cultures can be carried out inside Setup: incubation the anaerobic chamber, thus avoiding any exposure to oxygen...

A method based on solid phase extraction and derivatization with acetic anhydride followed by gas chromatography-mass spectrometry was validated for the determination of bisphenol A (BPA) in baby foods. The average method detection limit (MDL) was 0.18 ng/g for a 5 g sample. Method repeatability was demonstrated with the replicate analyses of various different types of baby foods; relative stan...

Scholars have for generations recognized the importance of wine production, distribution, and consumption in relation to second millennium BC palatial complexes in the Mediterranean and Near East. However, direct archaeological evidence has rarely been offered, despite the prominence of ancient viticulture in administrative clay tablets, visual media, and various forms of documentation. Tartari...

A total of 154 food composite samples from the 2008 total diet study in Quebec City were analysed for bisphenol A (BPA), and BPA was detected in less than half (36%, or 55 samples) of the samples tested. High concentrations of BPA were found mostly in the composite samples containing canned foods, with the highest BPA level being observed in canned fish (106 ng g(-1)), followed by canned corn (...

Deployed software systems are typically composed of many pieces, not all of which may have been created by the main development team. Often, the provenance of included components — such as external libraries or cloned source code — is not clearly stated, and this uncertainty can introduce technical and ethical concerns that make it difficult for system owners and other stakeholders to manage th...