Protection of Works of Art From Atmospheric Ozone

Assesses the colorfastness of organic colorants and watercolor pigments tested in atmospheric ozone. A summary of a full report of the Environmental Quality Laboratory, California Institute of Technology, Pasadena

Farm Enterprise Analysis: Has It Lost Its Usefulness?

Farm enterprise analysis is a term that has traditionally been used to describe the process of determining costs associated with farm business enterprises and enterprise profitability. A key challenge to those who would know their costs has been the lack of guidance on cost accounting principles and the application of those principles to agriculture. However, that recently changed with the publication of the Farm Financial Standards Council’s Management Accounting Principles for Agricultural Producers, which has led to questions about the usefulness of enterprise analysis. The differences between the two approaches to determining costs for farm business enterprises are discussed as they relate to the usefulness of the output to managers for decision making.Productivity Analysis,

New approach to fusion-laser optical pulse generation has proven very reliable

Starting with 6 CW frequency stabilized CO/sub 2/ oscillators, we have been able to reliably generate approx. 1 ns pulses with any combination of six rotational-vibrational lines selected from both the P- and R-branches, and the 9 ..mu..m and 10 ..mu..m bands. Total output power of > 100 KW has been obtained with excellent reproducibility in both the total power as well as the ratios of the powers in the six rotational-vibrational lines. This capability represents a potential starting point for temporal pulse programming of the output of a large CO/sub 2/ amplifier chain

Food Sovereignty in the City: Challenging Historical Barriers to Food Justice

Local food initiatives are steadily becoming a part of contemporary cities around the world and can take on many forms. While some of these initiatives are concerned with providing consumers with farm-fresh produce, a growing portion are concerned with increasing the food sovereignty of marginalized urban communities. This chapter provides an analysis of urban contexts with the aim of identifying conceptual barriers that may act as roadblocks to achieving food sovereignty in cities. Specifically, this paper argues that taken for granted commitments created during the birth of the modern city could act as conceptual barriers for the implementation of food sovereignty programs and that urban food activists and programs that challenge these barriers are helping to achieve the goal of restoring food sovereignty to local communities, no matter their reasons for doing so. At the very least, understanding the complexities of these barriers and how they operate helps to strengthen ties between urban food projects, provides these initiatives with ways to undermine common arguments used to support restrictive ordinances and policies, and illustrates the transformative potential of food sovereignty movements

Peripheral Vascular Responses to Acute Cold-Water Immersion

69 pagesExercise is effective in improving cardiovascular health, specifically, as a result of the increase shear stress on peripheral vasculature. Similarly, heat therapy (i.e., sauna bathing and hot water immersion) has indicated similar responses to exercise on endothelial function and vascular remodeling. However, less is understood about the peripheral vascular responses of a single bout of cold-water immersion and if it could be used as an alternative to exercise to improve cardiovascular health. Therefore, the purpose of this study was to test the hypothesis that cold-water immersion results in peripheral vascular changes that may be beneficial to overall cardiovascular health (i.e., increase in shear stress through increased blood flow). Eight young, healthy adults (4 self-reporting male and 4 self-reporting females: age: 24±7 years; height: 172±39 cm; weight: 65±24 kg; and BMI: 22.2±7.9 kg/m2) completed one study visit where they were immersed to the sternum in ~10C water for 15 minutes. Ultrasound imaging of the brachial artery was taken prior to, during, and after the cold-water immersion. Our results indicate there was a decrease in brachial artery diameter during and after cold-water immersion, and blood flow and shear decreased during the post-immersion recovery period in comparison to pre-immersion. Therefore, this may indicate a negative effect on peripheral vascular function; future research should focus on these peripheral vascular changes with repeated bouts of cold-water immersion2023-07-2

Peripheral Vascular Responses to Acute Cold-Water Immersion

Exercise is effective in improving cardiovascular health, specifically, as a result of the increase shear stress on peripheral vasculature. Similarly, heat therapy (i.e., sauna bathing and hot water immersion) has indicated similar responses to exercise on endothelial function and vascular remodeling. However, less is understood about the peripheral vascular responses of a single bout of cold-water immersion and if it could be used as an alternative to exercise to improve cardiovascular health. Therefore, the purpose of this study was to test the hypothesis that cold-water immersion results in peripheral vascular changes that may be beneficial to overall cardiovascular health (i.e., increase in shear stress through increased blood flow). Eight young, healthy adults (4 self-reporting male and 4 self-reporting females: age: 24±7 years; height: 172±39 cm; weight: 65±24 kg; and BMI: 22.2±7.9 kg/m2) completed one study visit where they were immersed to the sternum in ~10C water for 15 minutes. Ultrasound imaging of the brachial artery was taken prior to, during, and after the cold-water immersion. Our results indicate there was a decrease in brachial artery diameter during and after cold-water immersion, and blood flow and shear decreased during the post-immersion recovery period in comparison to pre-immersion. Therefore, this may indicate a negative effect on peripheral vascular function; future research should focus on these peripheral vascular changes with repeated bouts of cold-water immersio

Travel Writing

Investigates the nuances of Hemingway’s two travel books, Death in the Afternoon and Green Hills of Africa, in the context of similar works by other interwar travel writers. Explores Hemingway’s philosophy of travel, addressing his authorial exposition and deeply ingrained understanding of foreign culture, as well as his attitude towards his “uninitiated” readership

A Clean, Well-Lighted Place for Killing: Nostalgia in Hemingway’s \u3cem\u3eDeath in the Afternoon\u3c/em\u3e

Reads Death in the Afternoon as both a guide to the bullfight from the perspective of the aficionado and as a nostalgic look at a dying art. Whittman writes: “The nostalgia of Death in the Afternoon is, in part, nostalgia for a time when Hemingway did not realize that his very presence at the fiestas destabilized the integrity of the very atmosphere he admired.

The New Midlife Self-Writing

In The New Midlife Self-Writing, Wittman treats recent self-writing by Rachel Cusk, Roxane Gay, Sarah Manguso, and Maggie Nelson, carefully situating these vital midlife works within the history of self-writing. She argues that they renew and redirect the autobiographical trajectories characteristic of earlier self-writing by switching their orientation to face the future and by celebrating midlife as growing season, a time of Bildung. In each chapter, writer-by-writer, she demonstrates how the midlife self-writers in question trace confident and future-oriented paths through the past, rejecting triumphalism and complicating both identity and individualism, just as they refine and redefine genres. Exploring these midlife self-writers as chroniclers of Generation X’s midlife in particular, Wittman coins the term "digital absence" to map their unique relationship to new forms of knowledge and knowledge gathering in an Information Age that they are both of and set apart from. She theorizes that their works share a "pedagogical style," a style characterized by clarity, exposition, and classical rhetoric, and a concern with the classroom, offering a warrant for reading them in pedagogical terms in concert with traditional scholarly approaches. Furthermore, Wittman presents readers with an overview of future midlife self-writing as well as self-writing overall, concluding that we might be looking at the scholarship of the future