Nitrogen-fixing, plant-growth promoting bacteria are arguably the biotechnological tool of highest potential to improve agricultural productivity in short term. Nitrogen fixation and phytohormone production by these bacteria have been considered the most important factors for plant growth promotion. However, the underlying mechanisms responsible for productivity increases by associative bacteri...

Although there would appear to be considerable potential for improving the health, productivity and quality of life of the Australian workforce through workplace physical activity (PA) promotion programs, the scientific evidence that such programs are effective is limited. This review appraises the quality of intervention studies conducted since 1997. Most studies included volunteer participant...

Plant-microbe interactions in the rhizosphere are the determinants of plant health, productivity and soil fertility. Plant growth-promoting bacteria (PGPB) are bacteria that can enhance plant growth and protect plants from disease and abiotic stresses through a wide variety of mechanisms; those that establish close associations with plants, such as the endophytes, could be more successful in pl...

Tehran Municipality has had two five-year plans so far and the third one is being formulated these days. However, investigating the sector relating to the human resources shows that there is a gap between present condition and the optimal situation in several domains. This article is an attempt to investigate the five-year plans in the domain of human resources via a practical model of forecast...

Firms often specify break-up fees in their employment contracts where a worker is obligated to compensate the firm if he leaves to take up employment with a competitor. We highlight the role of such break-up fees in the presence of asymmetric information about the worker’s quality between the current employer and the outside labor market. Waldman (1984) argues that if the market attempts to lea...

background: studies have shown that mothers of premature newborns have lower physical and psychological quality of life compared to mothers of healthy neonates. therefore, applying a health promotion program for supporting them is necessary. aim: to determine the effectiveness of a health promotion program on the quality of the life of mothers of premature newborns. methods: in this quasi- expe...

a crossbreeding experiment involving four iranian fat-tailed sheep breeds, namely kurdi (k), chaal (c), afshari (a) and sanjabi (s) was carried out to determine the ram breed effects on productivity of kurdi fat-tailed ewes (k) under extensive production system. a total of 475 kurdi ewes were mated to 24 rams from four breeds producing 454 lambs including pure kurdi, kk, (116 lambs), afshari × ...

introduction: health care systems depend critically on the size, skill, and commitment of the health workforce. therefore, researchers have a close observation on the subjects which leads to an increase in the productivity of human resources. this study aims at determining the relationship between the quality of work life and the productivity of knowledge workers of the central field of shiraz ...