scholarly journals Ultrafine Particulate Matter Source Contributions across the Continental United States

2018 ◽  
Author(s):  
Melissa A. Venecek ◽  
Xin Yu ◽  
Michael J. Kleeman
Keyword(s):  
United States ◽  
Particulate Matter ◽  
Los Angeles ◽  
San Francisco ◽  
The United States ◽  
Biomass Combustion ◽  
Spatial Gradients ◽  
The Us ◽  
Ultrafine Particulate Matter ◽  
Pollution Episodes

Abstract. The regional concentration of airborne ultrafine particulate matter mass (Dp < 0.1 µm; PM0.1) was predicted with 4 km resolution in 39 cities across the United States during summer time air pollution episodes. Calculations were performed using a regional chemical transport model with 4 km spatial resolution operating on the National Emissions Inventory created by the US EPA. Measured source profiles for particle size and composition between 0.01–10 µm were used to translate PM total mass to PM0.1. PM0.1 concentrations exceeded 2 µg m-3 during summer pollution episodes in major urban regions across the US including Los Angeles, the San Francisco Bay Area, Houston, Miami, and New York. PM0.1 spatial gradients were sharper than PM2.5 spatial gradients due to the dominance of primary aerosol in PM0.1. Artificial source tags were used to track contributions to primary PM0.1 and PM2.5 from fifteen source categories. As expected, on-road gasoline and diesel vehicles made significant contributions to regional PM0.1 in all 39 cities even though peak contributions within 0.3 km of the roadway were not resolved by the 4 km grid cells. Food cooking also made significant contributions to PM0.1 in all cities but biomass combustion was only important in locations impacted by summer wildfires. Aviation was a significant source of PM0.1 in cities that had airports within their urban footprints. Industrial sources including cement manufacturing, process heating, steel foundries, and paper &amp; pulp processing impacted their immediate vicinity but did not significantly contribute to PM0.1 concentrations in any of the target 39 cities. Natural gas combustion made significant contributions to PM0.1 concentrations due to the widespread use of this fuel for electricity generation, industrial applications, residential, and commercial use. The major sources of primary PM0.1 and PM2.5 were notably different in many cities. Future epidemiological studies may be able to differentiate PM0.1 and PM2.5 health effects by contrasting cities with different ratios of PM0.1 / PM2.5. In the current study, cities with higher PM0.1 / PM2.5 ratios include Houston TX, Los Angeles CA, Birmingham AL, Charlotte NC, and Bakersfield CA. Cities with lower PM0.1 to PM2.5 ratios include Lake Charles LA, Baton Rouge LA, St. Louis MO, Baltimore MD, and Washington DC.

scholarly journals Predicted ultrafine particulate matter source contribution across the continental United States during summertime air pollution events

2019 ◽  
Vol 19 (14) ◽  
pp. 9399-9412 ◽  
Author(s):  
Melissa A. Venecek ◽  
Xin Yu ◽  
Michael J. Kleeman
Keyword(s):  
United States ◽  
Air Pollution ◽  
Particulate Matter ◽  
Los Angeles ◽  
San Francisco ◽  
The United States ◽  
Biomass Combustion ◽  
Spatial Gradients ◽  
Ultrafine Particulate Matter ◽  
Pollution Episodes

Abstract. The regional concentrations of airborne ultrafine particulate matter mass (Dp<0.1 µm; PM0.1) were predicted in 39 cities across the United States (US) during summertime air pollution episodes. Calculations were performed using a regional source-oriented chemical transport model with 4 km spatial resolution operating on the National Emissions Inventory created by the U.S. Environmental Protection Agency (EPA). Measured source profiles for particle size and composition between 0.01 and 10 µm were used to translate PM total mass to PM0.1. Predicted PM0.1 concentrations exceeded 2 µg m−3 during summer pollution episodes in major urban regions across the US including Los Angeles, the San Francisco Bay Area, Houston, Miami, and New York. PM0.1 spatial gradients were sharper than PM2.5 spatial gradients due to the dominance of primary aerosol in PM0.1. Artificial source tags were used to track contributions to primary PM0.1 and PM2.5 from 15 source categories. On-road gasoline and diesel vehicles made significant contributions to regional PM0.1 in all 39 cities even though peak contributions within 0.3 km of the roadway were not resolved by the 4 km grid cells. Cooking also made significant contributions to PM0.1 in all cities but biomass combustion was only important in locations impacted by summer wildfires. Aviation was a significant source of PM0.1 in cities that had airports within their urban footprints. Industrial sources, including cement manufacturing, process heating, steel foundries, and paper and pulp processing, impacted their immediate vicinity but did not significantly contribute to PM0.1 concentrations in any of the target 39 cities. Natural gas combustion made significant contributions to PM0.1 concentrations due to the widespread use of this fuel for electricity generation, industrial applications, residential use, and commercial use. The major sources of primary PM0.1 and PM2.5 were notably different in many cities. Future epidemiological studies may be able to differentiate PM0.1 and PM2.5 health effects by contrasting cities with different ratios of PM0.1∕PM2.5. In the current study, cities with higher PM0.1∕PM2.5 ratios (ratio greater than 0.10) include Houston, TX, Los Angeles, CA, Bakersfield, CA, Salt Lake City, UT, and Cleveland, OH. Cities with lower PM0.1 to PM2.5 ratios (ratio lower than 0.05) include Lake Charles, LA, Baton Rouge, LA, St. Louis, MO, Baltimore, MD, and Washington, D.C.

The “Japanese Turn” in Fine Dining in the United States, 1980–2020

2020 ◽  
Vol 20 (2) ◽  
pp. 45-54
Author(s):  
Samuel H. Yamashita
Keyword(s):  
United States ◽  
New York ◽  
Los Angeles ◽  
San Francisco ◽  
San Francisco Bay Area ◽  
The United States ◽  
First Century ◽  
Further Training ◽  
Bay Area ◽  
Wide Acceptance

In the 1970s, Japanese cooks began to appear in the kitchens of nouvelle cuisine chefs in France for further training, with scores more arriving in the next decades. Paul Bocuse, Alain Chapel, Joël Robuchon, and other leading French chefs started visiting Japan to teach, cook, and sample Japanese cuisine, and ten of them eventually opened restaurants there. In the 1980s and 1990s, these chefs' frequent visits to Japan and the steady flow of Japanese stagiaires to French restaurants in Europe and the United States encouraged a series of changes that I am calling the “Japanese turn,” which found chefs at fine-dining establishments in Los Angeles, New York City, and later the San Francisco Bay Area using an ever-widening array of Japanese ingredients, employing Japanese culinary techniques, and adding Japanese dishes to their menus. By the second decade of the twenty-first century, the wide acceptance of not only Japanese ingredients and techniques but also concepts like umami (savory tastiness) and shun (seasonality) suggest that Japanese cuisine is now well known to many American chefs.

scholarly journals The case for Pacific media reform to reflect island communities

2005 ◽  
Vol 11 (1) ◽  
pp. 26-35
Author(s):  
Kalafi Moala
Keyword(s):  
United States ◽  
San Francisco ◽  
San Francisco Bay ◽  
San Francisco Bay Area ◽  
The United States ◽  
Daily News ◽  
Bay Area ◽  
The Us ◽  
Island Communities ◽  
The Media

"The largest number of Tongans outside of Tonga lives in the United States. It is estimated to be more than 70,000; most live in the San Francisco Bay Area. On several occasions during two visits to the US by my wife and I during 2004, we met workers who operate the only daily Tongan language radio programmes in San Francisco. Our organisation supplies the daily news broadcast for their programmes. Our newspapers— in the Tongan and Samoan languages— also sell in the area. The question of what are the fundamental roles of the media came up in one of our discussions..."

scholarly journals Perceived Neighborhood-level Drivers of Food Insecurity Among Aging Women in the United States (P04-155-19)

2019 ◽  
Vol 3 (Supplement_1) ◽  
Author(s):  
Jacqueline Shieh ◽  
Sheri Weiser ◽  
Henry Whittle ◽  
Ighovwerha Ofotokun ◽  
Adaora Adimora ◽  
...  
Keyword(s):  
United States ◽  
Chronic Illness ◽  
Food Insecurity ◽  
San Francisco ◽  
The United States ◽  
Food Stores ◽  
Chapel Hill ◽  
Aging Women ◽  
The Us ◽  
Neighborhood Level

Abstract Objectives Aging populations in the United States (US) exhibit high rates of both food insecurity and chronic illness. Few studies have explored in depth how food insecurity arises among such populations, and how it interacts with experiences of aging. We qualitatively explored how aging, low-income women experience food insecurity at multiple sites across the US, focusing on the neighborhood-level factors that influence these experiences. Methods Study participants were drawn from the San Francisco, CA, Atlanta, GA, and Chapel Hill, NC sites of the Women's Interagency HIV Study (WIHS), a cohort study of women with or at risk for HIV. Using purposive sampling, we recruited 38 women who were food-insecure, 50 years of age or older, either with or at risk for HIV, and from different neighborhoods within each site. Semi-structured interviews explored participants’ perceptions of how their neighborhood influenced their experiences with food security and aging. An inductive-deductive approach was used to thematically analyze the data. Results Participants across the three sites explained that food insecurity was related to limited access to food stores. In San Francisco, this limited access primarily resulted from high food prices, whereas in Atlanta and Chapel Hill long distances to food stores and poor public transport systems were prominent. Most participants also described being dependent on food aid programs, but often found this difficult due to poor quality food and long wait times. Aging-related issues emerged as a cross-cutting theme. Both HIV + and HIV- women explained how fatigue, poor strength, and joint pains all amplified their barriers to accessing food. Women with chronic illness, regardless of HIV status, also found it difficult to afford healthy and nutritious food, which in turn further aggravated their poor health. Conclusions Findings from this study suggest that older women across different settings in the US experience multiple barriers to navigating the food system, with key similarities and differences in barriers and systems of institutional support. While future programs should address common neighborhood-level barriers such as the availability and affordability of healthy foods and transportation, they should also be tailored to aging women, and to the unique local context. Funding Sources NIAID.

scholarly journals The contribution of marine organics to the air quality of the western United States

2010 ◽  
Vol 10 (15) ◽  
pp. 7415-7423 ◽  
Author(s):  
B. Gantt ◽  
N. Meskhidze ◽  
A. G. Carlton
Keyword(s):  
United States ◽  
Air Quality ◽  
San Francisco ◽  
Atmospheric Chemistry ◽  
Environmental Protection Agency ◽  
Regional Scale ◽  
The United States ◽  
Coastal Areas ◽  
Western United States ◽  
The Us

Abstract. The contribution of marine organic emissions to the air quality in coastal areas of the western United States is studied using the latest version of the US Environmental Protection Agency (EPA) regional-scale Community Multiscale Air Quality (CMAQv4.7) modeling system. Emissions of marine isoprene, monoterpenes, and primary organic matter (POM) from the ocean are implemented into the model to provide a comprehensive view of the connection between ocean biology and atmospheric chemistry and air pollution. Model simulations show that marine organics can increase the concentration of PM2.5 by 0.1–0.3 μg m−3 (up to 5%) in some coastal cities such as San Francisco, CA. This increase in the PM2.5 concentration is primarily attributed to the POM emissions, with small contributions from the marine isoprene and monoterpenes. When marine organic emissions are included, organic carbon (OC) concentrations over the remote ocean are increased by up to 50% (25% in coastal areas), values consistent with recent observational findings. This study is the first to quantify the air quality impacts from marine POM and monoterpenes for the United States, and it highlights the need for inclusion of marine organic emissions in air quality models.

Russian Artists in the United States

Experiment ◽  
2014 ◽  
Vol 20 (1) ◽  
pp. 229-259
Author(s):  
Oleg Minin
Keyword(s):  
United States ◽  
Los Angeles ◽  
San Francisco ◽  
Cultural Landscape ◽  
Southern California ◽  
The United States ◽  
The State ◽  
Critical Reception ◽  
Artistic Legacy

Charting Nicholas Remisoff’s artistic legacy during his California period, this essay explores his contributions to the cultural landscape of the state and emphasizes his work on live stage productions in San Francisco and Los Angeles in the early 1930s and 1940s. Delineating the critical reception of Remisoff’s work in opera, ballet and theatre in these cities, this essay also highlights the artist’s interactions and key collaborations with other Russian and European émigré artists and reflects on the nature of Remisoff’s particular affinity with Southern California.

scholarly journals Interaction Patterns of Men Who Have Sex With Men on a Geosocial Networking Mobile App in Seven United States Metropolitan Areas: Observational Study (Preprint)

2019 ◽  
Author(s):  
Nadia N Abuelezam ◽  
Yakir A Reshef ◽  
David Novak ◽  
Yonatan Hagai Grad ◽  
George R Seage III ◽  
...  
Keyword(s):  
United States ◽  
Los Angeles ◽  
San Francisco ◽  
Metropolitan Areas ◽  
Pearson Correlation ◽  
The United States ◽  
Mobile App ◽  
Interaction Patterns ◽  
Geosocial Networking ◽  
Sex With Men

BACKGROUND The structure of the sexual networks and partnership characteristics of young black men who have sex with men (MSM) may be contributing to their high risk of contracting HIV in the United States. Assortative mixing, which refers to the tendency of individuals to have partners from one’s own group, has been proposed as a potential explanation for disparities. OBJECTIVE The objective of this study was to identify the age- and race-related search patterns of users of a diverse geosocial networking mobile app in seven metropolitan areas in the United States to understand the disparities in sexually transmitted infection and HIV risk in MSM communities. METHODS Data were collected on user behavior between November 2015 and May 2016. Data pertaining to behavior on the app were collected for men who had searched for partners with at least one search parameter narrowed from defaults or used the app to send at least one private chat message and used the app at least once during the study period. Newman assortativity coefficient (R) was calculated from the study data to understand assortativity patterns of men by race. Pearson correlation coefficient was used to assess assortativity patterns by age. Heat maps were used to visualize the relationship between searcher’s and candidate’s characteristics by age band, race, or age band and race. RESULTS From November 2015 through May 2016, there were 2,989,737 searches in all seven metropolitan areas among 122,417 searchers. Assortativity by age was important for looking at the profiles of candidates with correlation coefficients ranging from 0.284 (Birmingham) to 0.523 (San Francisco). Men tended to look at the profiles of candidates that matched their race in a highly assortative manner with R ranging from 0.310 (Birmingham) to 0.566 (Los Angeles). For the initiation of chats, race appeared to be slightly assortative for some groups with R ranging from 0.023 (Birmingham) to 0.305 (Los Angeles). Asian searchers were most assortative in initiating chats with Asian candidates in Boston, Los Angeles, New York, and San Francisco. In Birmingham and Tampa, searchers from all races tended to initiate chats with black candidates. CONCLUSIONS Our results indicate that the age preferences of MSM are relatively consistent across cities, that is, younger MSM are more likely to be chatted with and have their profiles viewed compared with older MSM, but the patterns of racial mixing are more variable. Although some generalizations can be made regarding Web-based behaviors across all cities, city-specific usage patterns and trends should be analyzed to create targeted and localized interventions that may make the most difference in the lives of MSM in these areas.

American Buddhism during World War II Imprisonment

2018 ◽  
Author(s):  
Michihiro Ama
Keyword(s):  
United States ◽  
World War Ii ◽  
Los Angeles ◽  
Political Ideology ◽  
The United States ◽  
Primary Sources ◽  
Japanese American ◽  
World War ◽  
The Us ◽  
American Buddhism

American Buddhism during World War II imprisonment refers to the Japanese American Buddhist experience between 1942 and 1945 when persons of Japanese ancestry, commonly known as Nikkei Amerikajin, were imprisoned. A discussion of the Nikkei Buddhist experience includes the experiences of Euro-American convert Buddhists who supported them during the imprisonment period. Immediately after the Imperial Japanese Navy attacked Pearl Harbor on December 7, 1941, the Federal Bureau of Investigation (FBI) arrested and interned Japanese Buddhist priests and other leaders of Japanese communities in the United States. In March 1942, the Western Defense Command designated the three West Coast states (Washington, Oregon, and California) and Arizona as Military Area No. 1, from which all persons of Japanese descent, and alien Germans and Italians, were forcefully removed. Following Executive Order 9066 signed by President Franklin D. Roosevelt, the US government removed approximately 120,000 Japanese Americans from the aforementioned military zone and incarcerated them in relocation centers built throughout the continental United States. During that time, the Nikkei community consisted primarily of the Issei, the first generation of Japanese immigrants, and the Nisei, their American-born children. As Tetsuden Kashima defines, the word “internment” refers to the imprisonment of enemy aliens, such as the Issei Japanese nationals, by the Department of Justice and the US Army, while the term “incarceration” refers to the confinement of the Nikkei, including a great number of the Nisei American citizens, by the War Relocation Authority. The word “imprisonment” designates the entire process consisting of internment and incarceration. The study of American Buddhism during World War II is still in its early stages. Finding records and documents related to this subject from the large collections on Japanese American imprisonment is not an easy task. While the National Archives in Washington, DC, maintains the majority of primary sources dealing with Japanese American relocation and incarceration, other institutions, such as the Japanese American National Museum, the University of California-Los Angeles, and museums built around the sites of internment camps, also preserve records. Some of the primary sources are written in Japanese and are located in Japan, which is another stumbling block for researchers who do not read Japanese. Duncan R. Williams’s forthcoming book, American Sutra: Buddhism and the World War II Japanese American Experience, however, will change the current state of scholarship on Japanese American Buddhism during World War II. The forceful relocation of Japanese American Buddhists served to weaken their long-standing efforts to make their ethno-religious practices accepted by America’s general public. Mass incarceration, however, forced the Japanese American Buddhists to further Americanize their religion, generated a set of new Buddhist practices, and gave them opportunities to reflect on their national identities. Buddhist faith and cultural practices associated with Japanese Buddhism contributed to ethnic solidarity, even though the Japanese American community was divided over the issue of US patriotism. During the postwar period, Japanese American Buddhists initiated a campaign to improve their image in the United States and to honor the Nisei Buddhist soldiers who fought during World War II. The formation of American Buddhism was closely connected to the development of US political ideology.

Remarks by Charles Stevens:

1973 ◽  
Vol 67 (5) ◽  
pp. 253-255
Author(s):  
Charles Stevens
Keyword(s):  
United States ◽  
New York ◽  
Los Angeles ◽  
San Francisco ◽  
Time Lag ◽  
Role Playing ◽  
The United States ◽  
Personal Contact ◽  
Home Office ◽  
The People

I ought to point out first that my own practice is primarily corporate practice dealing with international business between Japan and the United States. Contract drafting is probably what I do most of, that and contract negotiations. In my field, many of the negotiations are not polite; they involve role playing on both sides and often extreme misunderstandings on both sides. I think, in addition to a good law background, the most important element in practice, especially in relations between Asia and the United States, is knowledge of an Asian language and a cultural familiarity with the countries where you specialize. To be able to communicate with your own client, and to be able to communicate for your client with the Japanese company across the table, knowledge of the language is absolutely essential. Also, I think my type of practice—that is practice with Asia—illustrates something that has happened in American law practice during the last ten years. The causes are primarily the revolution in transportation and something called the telex machine. Before 1960 it was impossible to get to Tokyo from New York in less than 26 hours. Now I go almost every month; it takes 16 hours. If you are representing Japanese clients in the United States it is necessary, I think, to meet the people in the Tokyo home office. Japanese abide greatly by this type of personal contact. It also helps to eliminate misunderstanding between a lawyer and his client. More and more lawyers, especially out of New York, Chicago, Los Angeles, San Francisco, and Washington are traveling around the world with their practices following them. If you have support services in various cities, there is usually no problem. You can travel, especially if your secretary and the people you work with out of the office from which you originate can handle the minor problems that come up. The telex machine has become extremely important. This is partly because of the time lag. Japan is almost exactly twelve hours opposite from the United States. My clients’ legal departments can handle minor negotiations and telex questions to me or ask me to draft particular positions. By getting background by telex, I can do this on an overnight basis so that in effect their legal department works 24 hours a day. This has the added benefit that sometimes the Japanese clients are able to disguise from the opposing American side the fact that they are using a large New York law firm.

scholarly journals Continued emissions of carbon tetrachloride from the United States nearly two decades after its phaseout for dispersive uses

2016 ◽  
Vol 113 (11) ◽  
pp. 2880-2885 ◽  
Author(s):  
Lei Hu ◽  
Stephen A. Montzka ◽  
Ben R. Miller ◽  
Arlyn E. Andrews ◽  
John B. Miller ◽  
...  
Keyword(s):  
United States ◽  
Carbon Tetrachloride ◽  
San Francisco ◽  
Environmental Protection Agency ◽  
Gulf Coast ◽  
The United States ◽  
Bay Area ◽  
The Us ◽  
Atmospheric Observations ◽  
Surrounding Areas

National-scale emissions of carbon tetrachloride (CCl4) are derived based on inverse modeling of atmospheric observations at multiple sites across the United States from the National Oceanic and Atmospheric Administration’s flask air sampling network. We estimate an annual average US emission of 4.0 (2.0–6.5) Gg CCl4 y−1 during 2008–2012, which is almost two orders of magnitude larger than reported to the US Environmental Protection Agency (EPA) Toxics Release Inventory (TRI) (mean of 0.06 Gg y−1) but only 8% (3–22%) of global CCl4 emissions during these years. Emissive regions identified by the observations and consistently shown in all inversion results include the Gulf Coast states, the San Francisco Bay Area in California, and the Denver area in Colorado. Both the observation-derived emissions and the US EPA TRI identified Texas and Louisiana as the largest contributors, accounting for one- to two-thirds of the US national total CCl4 emission during 2008–2012. These results are qualitatively consistent with multiple aircraft and ship surveys conducted in earlier years, which suggested significant enhancements in atmospheric mole fractions measured near Houston and surrounding areas. Furthermore, the emission distribution derived for CCl4 throughout the United States is more consistent with the distribution of industrial activities included in the TRI than with the distribution of other potential CCl4 sources such as uncapped landfills or activities related to population density (e.g., use of chlorine-containing bleach).

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