Each business included in the analyses was verified as being in active operation via phone calls, checking WeedMaps message boards for current ratings and comments, and by whether a dispensary was photographed at that location using Google Street View. Once verified as being active, the address of each storefront was geocoded using geographic information systems software […]
Tag: vertical farming
Participant CESD scores were not associated with frequency of marijuana use or cigarette use
Two hundred adolescents were consented into the study and completed the baseline visit. Of those, 28 denied smoking cigarettes in the past 30 days and 7 declined to answer the question about marijuana use and were thus excluded from the analysis. The resulting sample had a mean age of 16.1 years and was racially diverse, with 28% […]
It requires an extended commitment to both political activism and direct action
Political process theory sprang from resource mobilization in the 1970s . It provided the dominant framework for U.S. sociologists throughout the 1970s, 1980s, and into the 1990s . Essentially, political process theory emphasizes the importance of political, legal, and cultural contexts in shaping the outcomes that social movements achieve. Many of the insights and concepts of […]
Marijuana users also engage in other behaviors that are associated with poor outcomes
Marijuana smoking, the predominant method of use, causes a 5-fold increase in the blood carboxyhemoglobin level and a 3-fold increment in the quantity of tar inhaled compared with tobacco . Studies on secondhand marijuana smoke have found endothelial dysfunction in rats after exposure . Given the myriad ways in which marijuana might potentiate vascular disease, […]
ZSFG is the county hospital for San Francisco and serves an economically disadvantaged population
The participants came from two studies, including 686 adolescents or young adults between 12 and 21 years old, who received care at the Children’s Health Center at Zuckerberg San Francisco General Hospital Center . The study was conducted from 2013 to 2014, prior to the legalization of recreational marijuana in California. Adolescents attending the CHC in […]
Only nonionized nicotine partitions between a surface and the gas phase
From a study conducted in Munich, Scherer et al. reported mean concentrations of nicotine in the living room at about 4 µg/m3 in 20 smokers’ homes, about 200´ as large as the mean for ten nonsmoking homes. Matt et al. used passive samplers to measure gas-phase nicotine concentrations in San Diego County homes with infants of mothers […]
Empirical data on indoor concentrations of and personal exposure to aerosol strong acidity are sparse
We just don’t know enough about either population exposures or exposure-response relationships to make a satisfactory risk assessment.”Scientific knowledge about this subject improved considerably during 1985-1995 and has continued to advance during the past few decades. We can now outline major features of the system, such as what are the causes, nature, and levels of […]
Carboxylic acids have the chemical composition R-COH
The release of chloroform from indoor use of chlorinated drinking water along with associated exposures has been extensively studied. For example, Weisel et al. measured chloroform in exhaled breath following showering among 49 female subjects throughout New Jersey. They found systematically and substantially higher chloroform exhaled from subjects who had elevated water levels of THMs. Nuckols […]
The largest source of atmospheric SO2 is coal combustion
Although the above cited studies have discussed the product of gaseous nitric acid and ammonia concentrations as a test of equilibrium between these gas-phase species and particulate NH4NO3, in indoor environments the mass of NH4NO3 accumulated on surfaces is anticipated to be much larger than the mass associated with indoor airborne particles. The complicating features […]
A recent study provides new clues about sorbed water in indoor surface films
Rowen and Blaine50 reported apparent surface areas on such a comparative basis. The specific surface areas for the two sorbates were comparable for titanium dioxide. However, for nylon and for wool specific surface areas were much larger for sorbing water as compared to N2. With dynamically changing indoor humidity conditions, an important consideration for sorptive […]