Circulating fibrocytes are increased in patients with asthma with CAO and can be transformed by TGF-beta(1) to myofibroblasts. Fibrocytes may contribute to airway obstruction in asthma.

No abstract

When starting a new job, newcomers strive to learn the tasks and expectations of their work, decipher the unwritten rules or norms of the culture, and achieve membership in the organization. The literature on the socialization of newcomers in organizations typically links success to the ability of the newcomer to learn to fit in. Yet recent empirical studies identified coworkers and managers as sharing the responsibility for successful socialization. The purpose of this study was to investigate the orientation and socialization processes (also known as onboarding) from the broader perspective of social capital. The concept of social capital generally describes the value and resources of social relations and network ties afforded to members of social networks or groups. Through a set of in-depth interviews with newly hired engineers in a large manufacturing organization, newcomers reported how they learned about and integrated into the social networks that made up their workplace. Overall, it was the quality of the relationships newcomers formed with coworkers and managers that was the primary driver of socialization outcomes.

To achieve ultralow-emission (ULE) standards, wet electrostatic precipitators (WESP) installed downstream from wet flue gas desulfurization (WFGD) have been widely used in Chinese coal-fired power plants (CFPPs). We conducted a comprehensive field test study at four 300 MW level ULE CFPPs, to explore the impact of wet clean processing (WFGD and WESP) on emission characteristics of three size fractions of particulate matter (PM: PM 2.5 , PM 10−2.5 , and PM >10 ) and their ionic compositions. All these CFPPs are installed with limestone-based/magnesium-based WFGD and followed by WESP as the end control device. Our results indicate that particle size distribution, mass concentration of PM, and ionic compositions in flue gas change significantly after passing WFGD and WESP. PM mass concentrations through WFGD are significantly affected by the relative strength between desulfur slurry scouring and flue gas carrying effects. Concentrations of ions in PM increase greatly after passing WFGD; especially, SO 4 2− in PM 2.5 , PM 10−2.5 , and PM >10 increase on average by about 1.4, 3.9, and 8.3 times, respectively. However, WESP before the stack can effectively reduce final PM emissions and their major ionic compositions. Furthermore, emission factors (kg/(t of coal)) of PM for different combinations of air pollution control devices are presented and discussed.