The uptake of homologous DNA by Haemophilus influenzae was studied as a function of the proton motive force in completely competent cultures in the pH range of 6 to 8. The composition and magnitude of the proton motive force were varied by using the ionophores valinomycin and nigericin (in the presence of various potassium ion concentrations) and by using protonophores. No interaction of the io...

Introduction 1 Acknowledgment 1 Notation 1 1. The tensor product with a motive of weight zero 3 1.1. The tensor product of two motives of weight zero 3 1.2. The tensor product of a torus with a motive of weight 0 3 1.3. The tensor product of an abelian scheme with a motive of weight 0 4 1.4. The tensor product of an extension of an abelian scheme by a torus with a motive of weight 0 4 2. The 1-...

Classified broadly, two motives for intra-family transfers exist: altruism and selfishness. This paper examines two selfish hypotheses − the exchange motive (strategic bequest motive) and the demonstration effect − using a new Japanese micro data set. My analysis of the determinants of intergenerational co-residence, distance between residences, and frequency of contact yields considerable supp...

Liyou Xu, Jingyun Zhang, Zhili Zhou, Xianghai Yan Vehicle & Motive Power Engineering College, Henan University of Science & Technology, Luoyang, Henan Province, China, [email protected] Vehicle & Motive Power Engineering College, Henan University of Science & Technology, Luoyang, Henan Province, China, [email protected] Vehicle & Motive Power Engineering College, Henan University of Sci...

This paper examines how aversion to risk and aversion to intertemporal substitution determine the strength of the precautionary saving motive in a two-period model with Selden/Kreps-Porteus preferences. For small risks, we derive a measure of the strength of the precautionary saving motive which generalizes the concept of "prudence" introduced by Kimball (1990b). For large risks, we show that d...

background and objectives: visit length is a crucial aspect of patient-physician relationship that its inadequacy can negatively influence the treatment efficiency. studies on visit length and the factors influencing it are limited in developing countries. thus, the objective of this study was to survey this variable at provincial level, and provide data on factors affecting it.   methods: a sa...

The aim was to better understand the role of motives in exercise participation. It was hypothesised that motives influence exercise participation by influencing behavioural regulation, and that motives are themselves influenced by personality traits. Data were from a cross-sectional questionnaire survey of 252 office workers, mean age 40 years. Analysis was by structural equation modelling. Acc...

extract: most information about family assessment are gathered during home visits have many benefits. one of them is that information about structure and habits of families may be more real when you observe the house and around it to find supportive and obstacles for promotion of family health. in addition family members are often more comprehensive in their home and can better act for their ne...