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Alberto J. Caban-Martinez,Bob Kropa,Neal Niemczyk,Kevin J. Moore,Jeramy Baum,Natasha Schaefer Solle,David A. Sterling,Erin N. Kobetz 한국산업안전보건공단 산업안전보건연구원 2018 Safety and health at work Vol.9 No.3
Hazardous work zones (i.e., hot, warm, and cold) are typically established by emergency response teams during hazardous materials (HAZMAT) calls but less consistently for fire responses to segment personnel and response activities in the immediate geographic area around the fire. Despite national guidelines, studies have documented the inconsistent use of respiratory protective equipment by firefighters at the fire scene. In this case-series report, we describe warm zone gas levels using multigas detectors across five independent fire incident responses all occurring in a large South Florida fire department. Multigas detector data collected at each fire response indicate the presence of sustained levels of volatile organic compounds in the “warm zone” of each fire event. These cases suggest that firefighters should not only implement strategies for multigas detector use within the warm zone but also include respiratory protection to provide adequate safety from toxic exposures in the warm zone.
Caban-Martinez, Alberto J.,Kropa, Bob,Niemczyk, Neal,Moore, Kevin J.,Baum, Jeramy,Solle, Natasha Schaefer,Sterling, David A.,Kobetz, Erin N. Occupational Safety and Health Research Institute 2018 Safety and health at work Vol.9 No.3
Hazardous work zones (i.e., hot, warm, and cold) are typically established by emergency response teams during hazardous materials (HAZMAT) calls but less consistently for fire responses to segment personnel and response activities in the immediate geographic area around the fire. Despite national guidelines, studies have documented the inconsistent use of respiratory protective equipment by firefighters at the fire scene. In this case-series report, we describe warm zone gas levels using multigas detectors across five independent fire incident responses all occurring in a large South Florida fire department. Multigas detector data collected at each fire response indicate the presence of sustained levels of volatile organic compounds in the "warm zone" of each fire event. These cases suggest that firefighters should not only implement strategies for multigas detector use within the warm zone but also include respiratory protection to provide adequate safety from toxic exposures in the warm zone.
Han-SolLee,Hae-MiYoo,Chang-SeokLee,s University) 한국통합생물학회 2003 Animal cells and systems Vol.7 No.3
White snakeroot (Ageratina altissima (L.) R. King & H. Robinson) as an invasive alien plant appeared more abundantly at lower elevations where frequent artificial interferences prevailed than at higher elevations where such impacts were less. They appeared abundantly in introduced forests such as black locust plantation but they did not appear or were rare in natural forests such as oak forest. But an exceptional phenomenon where white snakeroot did not appear was found in a Korean pine stand with dense cover afforested recently. Appearance status of white snakeroot in each section of trampling path depended on breadth of the path and relative light intensity. Growth of white snakeroot measured as the number of ramet per genet, height, and biomass was better near the trampling path and was reduced toward the forest interior. The growth was proportionate to the relative light intensity measured according to distance from the trampling path. Such results support the fact generally known in relation to invasion and expansion of the invasive alien plants. From this viewpoint, we suggest a management plan that applies ecological restoration principles to address ecosystems infected with white snakeroot by restoring the integral feature of the degraded nature and more thoroughly conserving the remaining nature.
Primate-specific miR-944 activates p53-dependent tumor suppression in human colorectal cancers
Kim, Yoon-Jin,Lee, Jeong Hwa,Jin, Soll,Kim, Jung Hoon,Kim, Sang Hoon Elsevier 2019 Cancer letters Vol.440 No.-
<P><B>Abstract</B></P> <P>As cancers with a high incidence rate, colorectal cancers are a main cause of cancer-related death. MicroRNAs are often deregulated in cancers. The primate-specific miR-944, located in a p63 intron, is known to be highly expressed in patients exhibiting low colorectal cancer recurrence rates. However, the biological functions of miR-944 in colorectal cancers remain unclear. In this study, we found that miR-944 was downregulated in colorectal cancer tissues, and inhibited cancer cell growth in a xenograft mouse model. The overexpression of miR-944 caused G1 phase arrest and increased p53 expression in cancer cells. p53 stability was enhanced by miR-944s targeting E3 ligases COP1 and MDM2. Overexpression of COP1 and MDM2 restored cell growth inhibition caused by miR-944. Taken together, our results suggest that miR-944 acts as a potential tumor suppressor in colorectal cancers through the ubiquitin-proteasome system.</P> <P><B>Highlights</B></P> <P> <UL> <LI> miR-944 was downregulated in colorectal cancer tissues. </LI> <LI> The overexpression of miR-944 caused G1 phase arrest in cancer cells. </LI> <LI> miR-944 stimulated p53-mediated signaling by increasing p53 stability. </LI> <LI> COP1 and MDM2 are functional targets of miR-944 mediating its anti-proliferative effect in colorectal cancers. </LI> </UL> </P>