DNA preparations from 5B and OB maize seedlings are indistinguishable in their buoyant density distribution in CsCl gradients. Their renaturation kinetics are identical at several stringency criteria. DNA competition studies fail to detect any component in 5B DNA redundant sequences which is lacking in OB DNA. Homologous and heterologous duplexes formed between 5B and OB DNA have virtually iden...

Experiments demonstrated that infestation with the oligochaete worm, Chaetogaster limnaei, afforded a degree of protection to the snail Australorbis glabratus when the snail was exposed to Schistosoma mansoni miracidia. To a lesser extent, the oligochaetes protected snails exposed to echinostome cercariae. The presence of C. limnaei within the kidney of the snail Physa heterostropha is reported...

The isotopic composition and concentration of Ag and the concentration of Pd have been determined in the Santa Clara and Piiion iron meteorites. It is shown that these meteorites contain isotopically anomalous Ag with an excess of 107 Ag relative to normal Ag, confirming earlier findings. Using an improved procedure for cleaning the sample surface from terrestrial Ag, a new concentration of 14x...

The iNEMI technical subcommittee on creep corrosion is developing a flowers-of-sulfur (FOS) based qualification test for creep corrosion on printed-circuit boards (PCBs). The test setup consists of a 300-mm cube chamber with two means of mounting the test specimens and flowing air over them to expose them to constant, predefined humidity and temperature conditions and sulfur and other contamina...

Many species of small mammals, especially rats: the brown or Norway rat Rattus norvegicus, roof rattus and house mouse Mus musculus are considered to be most serious pest in residential, industrial agricultural contexts accounting for losses worth billions dollars (Battersby et al., 2008; Childs 1991; Costa, Porter, 2014; Morand 2015; Pimentel 2005). Likewise, rats serve as reservoirs important...

Pawpaw [Asimina triloba (L.) Dunal.], a tree fruit native to eastern North America, is in the beginning stages of commercialization. Cultivars available in the early 20th century have been lost, and significant genetic erosion may have occurred. Polymorphic microsatellite marker loci were developed from enriched genomic libraries. Five marker loci were used to fingerprint 28 cultivars and 13 se...

Geraniums are sensitive to ethylene during shipping and respond by abscising their petals. Treatment of stock plants with ethylene (ethephon) in order to increase cutting yield resulted in earlier flowering in Pelargonium × hortorum ‘Kim’ and ‘Veronica’, but did not result in increased susceptibility to petal abscission following exposure to 1.0 μL·L–1 ethylene. Treatment of ‘Kim’, ‘Veronica’, ...

A rice (Oryza sativa) experiment was conducted to determine the accuracy of a fast tissue testing method using a Horiba Cardy K+ meter. Rice was field-grown in three soil potassium regimes. At three early reproductive growth stages (R0, R1, and R2), stem samples from the basal six inches of rice plants were collected and analyzed for K content. Basal stem samples were tested with extracted sap ...

The s1-receptor is a one-transmembrane endoplasmic reticulum protein that binds neurosteroids and dextrorotatory benzomorphans. The roles of s1-receptors in regulating intracellular Ca 21 in NG108 cells were examined in this study. s1-Ligands pregnenolone sulfate, (1)-pentazocine, and 2-(4-morpholino)ethyl-1phenylcyclohexane-1-carboxylate hydrochloride modulate Ca signaling in NG108 cells via t...

Peanut (Arachis hypogaea L.) cultivars are available that have high resistance to the peanut root-knot nematode [Meloidogyne arenaria (Neal) Chitwood race 1] or tomato spotted wilt, caused by tomato spotted wilt Tospovirus (TSWV); however, no cultivars exist that have resistance to both pathogens. The objective of this research was to combine resistance to both pathogens in a single genotype. D...