Chinese haze versus Western smog: lessons learned.

Global pollution: is the arctic haze actually industrial smog?

Important Lessons Learned From Nearly a Half-Century of Orthopedic Practice

“Those who cannot remember the past are condemned to repeat it” [1]. The famous quote from Hispanic American philosopher George Santayana reminds us of the critical importance of constantly reflecting on the most important lessons garnered from both our own personal experiences and those of our peers. In 49 years of academic orthopedic practice, I have frequently reflected on the most important...

Regionalization of the Iowa State University Extension System: Lessons Learned by Key Administrators

The cyclical economic downturn in the United States has forced many Extension administrators to rethink and adjust services and programming. The Cooperative Extension System (CES), the organization primarily responsible for governmental Extension work in the United States, at Iowa State University responded to this economic downturn by restructuring its organization from county based to a regio...

When Eastern and Western Language Systems Meet:

Many lessons can be learned from relevant research in vocabularyand language-learning strategy training as well as from comparative studies of those learning Oriental languages, which could greatly help language teachers and learners in Kanji-background countries. This article contrasts the minimal threshold levels of vocabulary needed for reading common English text, versus that required for r...

Source apportionment using radiocarbon and organic tracers for PM2.5 carbonaceous aerosols in Guangzhou, South China: contrasting local- and regional-scale haze events.

We conducted a source apportionment and investigated the atmospheric behavior of carbonaceous aerosols during hazy and normal days using radiocarbon ((14)C) and biomass burning/secondary organic aerosol (SOA) tracers during winter in Guangzhou, China. Haze episodes were formed either abruptly by local emissions or through the accumulation of particles transported from other areas. The average c...