Pollutant formation in fuel lean recirculating flows

An opposed reacting jet combustor (ORJ) was tested at a pressure of 1 atmosphere. A premixed propane/air stream was stabilized by a counterflowing jet of the same reactants. The resulting intensely mixed zone of partially reacted combustion products produced stable combustion at equivalence ratios as low as 0.45. Measurements are presented for main stream velocities of 7.74 and 13.6 m/sec with an opposed jet velocity of 96 m/sec, inlet air temperatures from 300 to 600 K, and equivalence ratios from 0.45 to 0.625. Fuel lean premixed combustion was an effective method of achieving low NOx emissions and high combustion efficiencies simultaneously. Under conditions promoting lower flame temperature, NO2 constituted up to 100 percent of the total NOx. At higher temperatures this percentage decreased to a minimum of 50 percent

Mueda, Memória e Massacre by Ruy Guerra and the cultural forms of the Makonde Plateau

Considered to be Mozambique’s first fiction feature film, Ruy Guerra’s Mueda, Memória e Massacre (1979-1980) (Mueda, Memory and Massacre) is an extemporaneous work, which belatedly formalises the assumptions that underpinned FRELIMO’s revolutionary project. A film of transition, it marks the passage from the period of the institution (1975/1976-1979) to the period of destitution of the Aesthetics of Liberation (1975/1976-1984) of the National Film Institute (INC). Mueda, Memória e Massacre was censored, partially re-shot and reedited, without Guerra’s direct supervision. These operations announced a normative deviation from FRELIMO’s political-cultural project and the aesthetic canonization of the 1980s. The mutilated version, that won the awards “Peoples’ Friendship Union” and “Film Culture” at the Tashkent Film Festival in 1980, responds to the “Liberation Script,” an epistemological and historiographical apparatus that aims to organize and codify the country’s history.This article assesses the presence of elements of the cinema collectivisation programme in Mueda, Memória e Massacre. In parallel, it considers the influence of Makonde culture — in particular, of the Mapiko masquerade — on the film’s aesthetic and narrative forms

Counting torsion points on subvarieties of the algebraic torus

We estimate the growth rate of the function which counts the number of torsion points of order at most $T$ on an algebraic subvariety of the algebraic torus $\mathbb G_m^n$ over some algebraically closed field. We prove a general upper bound which is sharp, and characterize the subvarieties for which the growth rate is maximal. For all other subvarieties there is a better bound which is power saving compared to the general one. Our result includes asymptotic formulas in characteristic zero where we use Laurent's Theorem, the Manin-Mumford Conjecture. However, we also obtain new upper bounds for $K$ the algebraic closure of a finite field.Comment: Comments welcom

Land rights activism and the struggle for power: Overlapping of the non-profit sector and the political sphere in Uganda

This paper is about politics in Western Uganda and the multiple ways it relates to organizations of activists working on human rights issues. It draws examples from a local organization dealing with illegal expropriations of land in the region. As land grabbing is pervading in Ugandan society, land rights defenders deal with actors from a large sociological spectrum, from poor farmers to top-level politicians. Advocating human rights againstland grabbing entices exposure and risks

Post-Cotonou and the EU-African relationship A green light for a renewed cooperation? Bruges Political Research Papers 77/2019

The Cotonou Partnership Agreement, signed in 2000 and set to expire in 2020, is allegedly the most advanced collaboration between the EU and some of the lowest-income countries in the world. In practice, however, its achievements are meagre and contested. Nonetheless, the EU and ACP countries officially launched in 2018 the negotiation of the post-Cotonou agreement, which aims to deepen the Cotonou’s acquis. While environmental concerns in the EU-Africa relation often fall under the radar of scientific literature, this paper aims to show how the prism of environmental and climate mainstreaming helps in explaining the declining relevance of the post-Cotonou framework. Even though a rhetoric of a ‘deepened partnership’ became the leitmotiv of post-Cotonou, ‘far reaching’ environmental provisions in the future agreement are impeded by structural deficiencies. This reflects in post-Cotonou’s current draft, trying hard to push environmental ambitions but maintaining a ‘coherence’ between regional protocols that is detrimental to any real environmental mainstreaming progresses. A ‘greener’ post-Cotonou will be achieved only if references to other external policies are made due to the progressive ‘externalisation’ of Cotonou’s original pillars: political dialogue, trade and development cooperation into other agreements reducing therefore post-Cotonou’s added-value to a minimal

Photography and Shamanism in the Exhibition ‘Claudia Andujar, The Yanomami Struggle’

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