Cosmic microwave background constraints on coupled dark matter

We study CMB constraints on a model with a cosmological constant and a fraction of dark matter non-minimally coupled to a massless scalar field. In this scenario, there is an extra gravity-like fifth force which can affect the evolution of the Universe enough to have a discernible effect on measurements of cosmological parameters. Using Planck and WMAP polarisation data, we find that up to half of the dark matter can be coupled. The coupling can also be several times larger than in models with a single species of cold dark matter coupled to a quintessence scalar field, as the scalar field does not play the role of dark energy and is therefore less constrained by the data.Comment: 5 pages, 4 figure

A Whole-of-Government Approach to Reducing Tropical Deforestation

Tropical forests provide critical global and local ecosystem services and habitat for many of the world’s plants and animals. Their loss threatens the sustainable economic growth and social stability of developing countries, and illegal deforestation abroad places U.S. producers at an unfair disadvantage. For these and other reasons, the United States has long been engaged in programs to reduce forest loss. This engagement has recently increased, with the new Presidential Global Climate Change Initiative including a pillar dedicated to slowing forest loss. While promising, this new funding and coordination is insufficient, with a narrow focus on climate-based development assistance. Engaging the full suite of forest policy levers in the federal government, or taking a “whole-of-government” approach, would provide greater immediate impact in preventing forest loss while building the foundations of a working landscape ethic. In this discussion paper, we explore the opportunities to expand U.S. contributions to reducing tropical deforestation through this approach. A whole-of-government approach to international deforestation consists of coordinating and focusing the programs across the federal government that could reduce the rate of tropical forest loss. It is an integrated strategy that employs existing activities and authorities of the U.S. government and directs them under an overarching goal of reducing deforestation in tropical forest countries, while continuing to support other developing-country goals, such as economic development, health, food security, and biodiversity. We identify three major areas where policy adjustments and actions by relevant authorities can have immediate and tangible impact on reducing deforestation.tropical deforestation, forest conservation, U.S. policy, REDD, reducing emissions from deforestation, whole-of-government, environment and trade, forest policy

A Bridge over Troubled Water: \u3cem\u3eLe tombeau de Couperin\u3c/em\u3e

Le tombeau de Couperin was composed during a turbulent time in the life of Ravel, a time when he had been emotionally scarred from the effects of war and had lost both his mother and many of his close friends. This composition may have served as the only friend whom Ravel felt comfortable enough to share with his innermost feelings. Autobiographical in nature, this piece follows the transition from Ravel’s carefully nurtured childhood and youth to serious maturity in his post-war adult life. There is personal emotional depth found in this piece, although at first it may appear somewhat hidden behind the classically ordered form and impressionistic harmony. Le tombeau, begun in 1914 and finished in 1917, serves as a bridge between Ravel’s pre- and post-war music

A study of the enzymatic hydrolysis of fish frames using model systems

A model system was employed to study the operating conditions and primary parameters of enzymic hydrolysis of cod proteins. Pancreatin, papain, and bromelain were used to hydrolyse minced cod fillets under controlled conditions and with the rate of hydrolysis being continually monitored via both the pH-stat and TNBS method. The two methods were compared and evaluated. The rate of protein solubilisation was plotted against the degree of hydrolysis (DH). Dry fish protein hydrolysate (FPH) powders having short, medium and high degrees of hydrolysis (DH of approximately 8%, 11% and 16% respectively) were produced and analysed for their molecular weight distribution, using size exclusion chromatography. Almost complete protein solubilisation (75 g soluble protein per kg hydrolysis solution) could be achieved within an hour, at 40°C, at 1% enzyme/substrate ratio (w/w) with papain and bromelain. The pH-stat was found capable of continuously following the rate of hydrolysis but only at low DH. The TNBS could be accurately used even at high DH to estimate the percentage of the peptide bonds cleaved, but required chemical analysis of withdrawn samples

Enzymatic hydrolysis of fish frames using pilot plant scale systems

Papain was used to hydrolyse fish frames under controlled conditions at a batch-pilot plant scale-process, for the pro-duction of fish protein hydrolysates (FPH). Mass balance calculations were carried out so that the rate of hydrolysis, rate of protein solubilisation and yields could be estimated. Almost complete hydrolysis could be achieved in 1 hour, at 40°C, with no pH adjustment, at 0.5% (5 g·kg−1) enzyme to substrate ratio (E/S, were S is Kjeldahl protein) using whole fish frames (including heads and flaps). This was achieved both with the addition of water (1/1 to 2/1 frames/water) but more importantly from commercial considerations without the initial addition of water (after mincing of the fish mate-rial). The degree of protein solubilisation ranged between 71% - 86% w/w. Four different processes are described, namely: 1) a soluble spray-dried FPH powder; 2) a liquid FPH; 3) a partly soluble, spray dried FPH powder and; 4) a crude, drum-dried protein for animal consumption. The amino acid profile of the FPH was identical to that of the par-ent substrate (fish frames)

All that faith creates, or love desires: Shelley’s poetic vision of being

This thesis explores the nature of creativity in the poetic vision of Percy Bysshe Shelley. "Poetic vision" is chosen for its complex connotations, which include creative imaginings, dreams and intimations of futurity. I examine questions that Shelley raises concerning perception, existence and the fabric of reality. To develop a conceptual framework that has an ontological basis, I draw on the theories of two twentieth-century non-dualist thinkers: David Bohm, who combines science, philosophy and art, and the existential thought of Martin Heidegger. I also investigate ways in which literary expression and life become interwoven and suggest that this reciprocity is explicable through a dynamically creative vision of existence. In Chapter One Shelley's reflections on the creative capacity of poetic visions to influence states of being, and his holistic apprehension of existence in On Life, provide the thesis with a conceptual paradigm which is in contradistinction to the Cartesian schism between mind and matter. A Defence of Poetry is contrasted with Peacock's The Four Ages of Poetry to show that the contention between the two writers' visions springs from questions relating to being. Shelley's declaration that the poetic impulse is central to life is examined in the light of Heidegger’s notion of the poetic as disclosing being and Bohm's quantum concepts of creativity. In Chapter Two Alastor is interpreted as a poem which raises questions about existence and I provide a counter-approach to critical positions of scepticism. Heidegger's concepts of "Being- in-the-world" and "Being-towards-death" provide the basis for an existential analysis of die Poet’s impassioned quest. A comparison between the Poet's dream of his feminine counterpart and Shelley's own vision of his ideal beloved reveals connections between artistic vision and human experience. In Chapter Three on Laon and Cythna. poetic vision is shown to operate from a metaphysical basis of thought, passion, and the human will to enact a radical transformation in consciousness. The poem's investigation of freedom is linked to Heidegger's concept of being absorbed in the "they." Chapter Four continues my extended reading of Laon and Cythna. Shelley's notion of creativity collapses the demarcations between imaginative vision and the physical world. Here his view of reality is contrasted with the psychological investigations of Jean Piaget. The poem’s vision of human empowerment is compared with Peacock's fatahsm in Ahrimanes. Chapter Five investigates challenges to Shelley's optimism. Julian and Maddalo is the major poem interpreted in a chapter v*ere the keynote is the contention between theories about the nature of reality and their validity to human life. Shelley's anxiety about communicating visions of despair is analyzed with regard to the Maniac's tragic predicament. Chapter Six interprets Prometheus Unbound as a dramatic engagement with the spiritual, imaginative, emotional and sensuous planes of being. Existence is seen to be poised on a mobile nexus of thought and emotions. Asia has a dynamic role and, through consideration of her journey with Panthea to Demogorgon, I examine Shelley's complex negotiation between free will and determinism. Spinoza's monism is discussed in relation to "Love's Philosophy. In Chapter Seven on Hellas, "Thought", "Passion", "Will", "Reason" and the "Imagination” are shown to have creative powers which determine futurity. Questions about the structure of reality are explored in the drama's dynamic interchange between the magician-like Ahasuerus and the Turkish tyrant Mahmud. Dreams are given significance as avenues of perception to realms beyond conscious experience and in relation to unfolding the future. Finally, in Chapter Eight Shelley's ideas about poetic creativity are explored through his poems to 'Jane Williams. Whilst composing these lyrics Shelley used the figure of Rousseau, in the Triumph of Life, to suggest a reciprocity between art and life. I examine the similarities between Rousseau's fictional creation of Julie in La Nouvelle Hélose and his subsequent love for Sophie d'Houdetot. Shelley's lyrics to Jane Williams communicate desire at different levels of conscious awareness, from trance-like mesmerism to overt invitation