Effect of seasonal variation and storage temperature on leaf chlorophyll fluorescence and vase life of cut roses

Low temperature injury (LTI) of roses (Rosa hybrida L.) is difficult to assess by visual observation. Relative chlorophyll fluorescence (CF; F-v/F-m) is a non-invasive technique that provides an index of stress effects on photosystem 11 (PS 11) activity. This instrumental technique allows determination of the photosynthetic efficiency of plant tissues containing chloroplasts, such as rose leaves. In the present study, pre- and Post-Storage measurements of F-v/F-m were carried out to assess LTI in 'First Red' and 'Akito' roses harvested year round. Relationships between the pre-harvest environment conditions of temperature, relative humidity and photon flux density (PFD), F-v/F-m, and, vase life duration after storage are reported. After harvest, roses were stored at 1, 5 and 10 degrees C for 10 days. Non-stored roses were the control treatment. F-v/F-m ratios were reduced following storage, suggesting LTI of roses. However, reductions in F-v/F-m were not closely correlated with reduced vase life duration and were seasonally dependent. Only during winter experiments was F-v/F-m of roses stored at 1 degrees C significantly (P <= 0.001) lower compared to F-v/F-m of non-stored control roses and roses stored at 5 and 10 degrees C. Thus, the fall of F-v/F-m was due to an interaction of growing season and storage at 1 degrees C. Vase lives of roses grown during winter were significantly (P <= 0.001) shorter compared to roses grown during summer. Length of vase life was intermediate for roses grown during autumn and spring. Because of the lack of correlation between F-v/F-m and post-storage vase life it is concluded that the CF parameter F-v/F-m is nota practical index for assessing LTI in cold-stored roses. Higher PFD and temperature in summer were positively and significantly correlated with maintenance of post-storage FvIF ratios and longer vase life. It is suggested that shorter vase lives and lower post-storage F-v/F-m values after storage at 1 degrees C are consequences of reduced photosynthesis and smaller carbohydrate pools in winter-harvested roses. (c) 2004 Elsevier B.V All rights reserved.

Marketing strategy : making sense of industry dynamics:is there still value in strategic group research?

This paper looks selectively at strategic group theory and seeks to explore the benefits and limitations of modern strategic group analysis within the context of practical strategy making in the pharmaceutical industry. The rise and fall of strategic group research is reviewed and suggestions advanced as to the reasons why strategic group research suffered criticism and frequently produced conflicting results. The paper concludes that strategic group research offers a valuable way to classify firms by their strategy and provides some suggestions as to how industry strategists may benefit from strategic group analysis and avoid the pitfalls exposed by previous research.

Ocular compatibility of hydrogel contact lenses:deposition and clinical performance

Currently over 50 million people worldwide wear contact lenses, of which over 75% wear hydrogel lenses. Significant deposition occurs in approximately 80% of hydrogel lenses and many contact lens wearers cease wearing lenses due to problems associated with deposition. The contact lens field is not alone in encountering complications associated with interactions between the body and artificial devices. The widespread use of man-made materials to replace structures in the body has emphasised the importance of studies that examine the interactions between implantation materials and body tissues.This project used carefully controlled, randomized clinical studies to study the interactive effects of contact lens materials, care systems, replacement periods and patient differences. Of principal interest was the influence of these factors on material deposition and their subsequent impact on subjective performance. A range of novel and established analytical techniques were used to examine hydrogel lenses following carefully controlled clinical studies in which clinical performance was meticulously monitored. These studies established the inter-relationship between clinical performance and deposition to be evaluated. This project showed that significant differences exist between individuals in their ability to deposit hydrogel lenses, with approximately 20% of subjects displaying significant deposition irrespective of the lens material. Additionally, materials traditionally categorised together show markedly different spoilation characteristics, which are wholly attributable to their detailed chemical structure. For the first time the in vivo deposition kinetics of both protein and lipid in charged and uncharged polymers was demonstrated. In addition the importance of care systems in the deposition process was shown, clearly demonstrating the significance of the quality rather than the quantity of deposition in influencing subjective performance.

Ethnic conflict and war crimes in the Balkans:the narratives of denial in post-conflict Serbia

In the years following the fall of Slobodan Milo evic, Serbian social, cultural and political responses to the wars of the 1990s have fallen under intense international scrutiny. But is this scrutiny justfied, and how can these responses be better understood? Jelena Obradovic engages with ideas about post-conflict societies, memory, cultural trauma, and national myths of victimhood and justified war to shed light upon Serbian denial and justification of war crimes - for example, Serbia's reluctant cooperation with the International Criminal Tribunal for the former Yugoslavia (ICTY). Rather than treating denial as a failure to come to terms with the past or as resurgent nationalism, Obradovic argues that the justification of atrocities are often the result of a societal need to understand and incorporate violent events within culturally acceptable boundaries.

The manufacture and utilisation of architectural terracotta and faience.

The revival of terracotta and faience in British architecture was widespread, dramatic in its results and, for two decades, the subject of intense debate. However the materials have been frequently denigrated and more generally disregarded by both architects and historians. This study sets out to record and explain the rise and fall of interest in terracotta and faience, the extent and nature of the industry and the range of architectural usage in the Victorian, Edwardian and inter-war periods. The first two chapters record the faltering use of terracotta as an 'artificial stone', until the material gained its own identity, largely through the appreciation of Italian architecture. In the mid-Victorian period, terracotta will be seen to have become symbolic of the philosophy of the Victoria and Albert Museum and its Art School in attempting to reform both architecture and the decorative arts. The adoption of terracotta was furthered as much by industrial as aesthetic factors; three chapters examine how the exploitation of coal-measure clays, developments in the processes of manufacture, the changing motivation of industrialists and differing economics of production served to promote and then to hinder expansion and adaptation. The practical values of economy, durability and fire-resistance and the aesthetic potential, seen in terms of colour and decorative and sculptural modelling, became inter-related in the work of the architects who made extensive use of architectural ceramics. A correlation emerges between the free Gothic style, exemplified by the designs of Alfred Waterhouse and the use of red terracotta supplied from Ruabon, and between the eclectic Renaissance style and a buff material produced by different manufacturers.These patterns were modified as a result of the adoption of faience for facing external walls as well as interiors, and because of the new architectural requirements and tastes of the twentieth century. The general timidity in exploiting the scope for polychromatic decoration and the increasing opposition to architectural ceramics is contrasted with the most successful schemes produced for cinemas, chain-stores and factories. In the last chapter, those undertaken by the Hathern Station Brick and Terracotta Company between 1896 and 1939 are used as a case study; they confirm that manufacturers, architects and clients were all committed to creating a modern and yet decorative architecture, appropriate for new building types and that would appeal to and be comprehensible to the public.

Europeanising the 'Kosovo question'?:Serbia's policies in the context of EU integration

The issues of Kosovo intependence and European Union membership have dominated Serbian domestic politics and foreign policy since the fall of Slobodan Milosevic in 2000. Despite the lack of formal conditionality on the Kosovo issue, Serbia's isnsitence on its uncompromising 'no recognition' Kosovo policy has been detrimental to its EU candidacy aspirations. This article examines Serbia's Kosovo policies in the context of EU integration, examining in particular the divergence between SErbia's stance towards Kosovo and its aspirations towards EU candidacy.

A kettős adóztatás elkerüléséről szóló korai magyar egyezmények = Earlier tax treaties of Hungary

Ennek a dolgozatnak az a célja, hogy bemutassa Magyarország történeti kettős adóztatás elkerüléséről szóló egyezményeit. A bevezetés, az első és a második fejezet a nemzetközi adózással kapcsolatos alapfogalmakat tisztázza. A harmadik fejezet Magyarország XVII-XVIII. századi gazdasági és politikai helyzetét írja le. Az ezt követő fejezetek a világháborúk előtti, közötti és utánuk következő időszak adóegyezményeinek történetével foglalkoznak. Az egyik fejezet a KGST tagállamok által kötött kettős adóztatás elkerüléséről szóló multilaterális egyezményt tárgyalja. Az összegzésben megállapításra kerül, hogy az adóegyezmények megkötésének a múltban nem feltétlenül gazdasági okai voltak. Bizonyos esetekben sokkal erőteljesebb volt a politikai (elsősorban külpolitikai) motiváció. A tanulmány számos olyan érdekes adalékkal szolgál a Vasfüggöny előtt letárgyalt adóegyezményekről, amelyek eddig még nem kerültek publikálásra a magyar szakirodalomban. _________ This paper intends to review the history of the double taxation agreements concluded by Hungary. The introduction, the first and the second chapters clear some basic definitions in the field of international taxation. The third chapter describes the political and economic history of Hungary back in the 17-18 centuries. The next chapters deal with the tax treaties concluded before the First World War, between the two Wars and after the Second World War. One chapter touches upon the COMECON multilateral tax treaties. The paper concludes that the economic importance of old tax treaties was not always the strongest commanding force during the negotiations. Sometimes political (especially foreign policy) reasons seemed much more relevant for the treaty party countires. The paper also provides an overview of the most interesting features of the tax treaties negotiated before the fall of the Iron Curtain for the first time in the Hungarian literature.

Creative Techniques in the Framework of Market and Evolution

This paper tries to reframe the man-machine problem, which has frequently changed throughout history. Originally, a machine was a helper of man, but later became its competitor and substitute. As a consequence of this, man has been pushed out of production and possibly, out of life itself. For today, nearly all the man’s functions – except for consumption and creativity – can be furnished by machines. Creativity should have a special place because it is the last “shelter” of man in the conflict with machine. Almost every other faculty of man has more or less been simulated by technology. There are some key questions to be answered: Whom do the creative techniques serve? Is the target group the men or machines?

La caída del hombre nuevo: Narrativa cubana del “Período Especial”

The purpose of this dissertation is to demonstrate that the societal changes that took place in Cuba during the last decade of the twentieth century, period know as The Special Period in Times of Peace, created the necessary conditions for the development of a new type of narrative. The first chapter constitutes an historical overview of the role of the State in the literary and artistic creation in revolutionary Cuba. The second, third, and fourth chapters analyze the major characteristics in the narrative of this period, creating a contrast with previous decades of the revolutionary era. With such purpose the study is divided into three categories: language, themes, and ideology. The usage of language as a means of transgression, the recurrence of the topic of need, and the rebirth of critical thinking, represent the principal characteristics of this literary period, and confirm the main idea of this dissertation: the fall of the ideal of the New Man. The final chapter summarizes the findings of the study and poses a question: If the ideal of the New Man has ceased to exist, what has replaced it? The question of whether or not a new ideal has replaced that of the New Man, and what that ideal might be, constitutes a stepping-stone for further studies in the area of Cuban narrative of the Special Period and beyond.

Academic orientations of African -American adolescents in Miami-Dade County

The purpose of this research was to answer the following research questions: (a) how high-achieving African-Americans maintain a “racefull” Black identity; (b) how African-American identity affects academic orientation and achievement; (c) how the school's ethnic composition affects African-American students' identity; and (d) how family structure, specifically living in female single-parent households, affects academic orientation and achievement. ^ The data were gathered in an inner-city high school in Miami, Florida. Participants were African-American adolescents, males and females, who started their first-year of high school in the fall of 1995 until their graduation in June 1999. The number of students in the sample varied from 27 students at the beginning of the project to 24 students at the time of graduation. ^ Data were gathered through intensive ethnographic field work, which involved direct participant observation of students in natural contexts; in-depth interviewing of students, peers, teachers, and families; open-ended classroom discussions on matters about the research; and focus groups. Data on demographics, levels of self-esteem and depression, hours spent doing homework, family help with school work, aspirations, and other factors were gained through a survey. ^ African-Americans in this high school developed a racefull persona and still embraced education. They did not need to be raceless to succeed. The ethnic composition of the school where these students were a minority within a minority school resulted in their developing reactive ethnicity formation. Family structure did not affect academic orientation. What made a difference in these students lives were parental support and family ties, which affected their academic orientation. ^

Woody Plant Invasion into the Freshwater Marl Prairie Habitat of the Cape Sable Seaside Sparrow: Final Report

In the fall of 2005, U.S. Fish and Wildlife Services (USFWS) contracted with Florida International University (FIU) to study the physical and biological drivers underlying the distribution of woody plant species in the marl prairie habitat of the Cape Sable Seaside Sparrow (CSSS). This report presents what we have learned about woody plant encroachment based on studies carried out during the period 2006-2008. The freshwater marl prairie habitat currently occupied by the Cape Sable seaside sparrow (CSSS; Ammodramus maritimus mirabilis) is a dynamic mosaic comprised of species-rich grassland communities and tree islands of various sizes, densities and compositions. Landscape heterogeneity and the scale of vegetative components across the marl prairie is primarily determined by hydrologic conditions, biological factors (e.g. dispersal and growth morphology), and disturbances such as fire. The woody component of the marl prairie landscape is subject to expansion through multiple positive feedback mechanisms, which may be initiated by recent land use change (e.g. drainage). Because sparrows are known to avoid areas where the woody component is too extensive, a better understanding of invasion dynamics is needed to ensure proper management.

Pollen records of five sediment cores from northern Germany

Within a larger program research work is being done on the history of settlement and landscape of the 'Siedlungskammer' Flögeln and the adjacent area. The 'Siedlungskammer' consists of an isolated pleistocene sand ground (Geest-island) surroundet by bogs. Starting from the edge of the Geest, near which large-scale archaeological excavations are carried out, three raised bog profiles were taken at 300, 500 and 4000 m off the prehistoric settlement. They were investigated by means of pollen analysis, and reflect in a decreasing way the activities of man on the Geestisland. Another pollen diagram from the nearby fen peat was worked out for comparison. At the same time it helped to date back a prehistoric sand path to the Roman period. The pollen diagrams cover the vegetational history without gaps from the early Atlantic period to modern times. The vegetation was decisively determined by the poor soils of this area. T'he pollen diagrams give evidence of the activity of settlers since the Neolithic age, with some gaps in the beginning, but later continuously from the middle of the Bronze age until the early migration period. The influence of the nearby settlement, which existed from the Birth of Christ to the 4/5th century, comes out distinctly. Among the cereals which were then cultivated here, there also was rye, at least in the 4/5th century, but most probably already during the Roman period. Besides that people cultivated barley, oats, and flax. The settlement break during the so-called dark ages between the 4/5th century and the time about 800 A.D. was confirmed by pollen analysis. During this time the area was once more covered by forests. The fluctuations of man's activities during the late Middle Ages and modern times, as they are made visible by pollen analysis, correspond to historically wellknown developments.

EXHAUSTING AFFECTS: THE NEGOTIATION OF AFFECTIVE LABOUR, NEOLIBERAL SUBJECTIVITY, AND FEMINIST POLITICS AMONG ANTI-VIOLENCE WORKERS

This thesis explores the affective and political life of anti-violence labour, with particular attention to the ways that neoliberalism comes to bear on subjectivity, embodiment, and relationality among women responding to violence. In fall of 2015, I conducted qualitative interviews with six women engaged in the work of responding to violence. The participants in this project articulated rich descriptions of the affective life of neoliberalism and the demands of neoliberal subjectivity, drawing particular attention to the affective labour involved in navigating the political complexities of anti-violence organizations, negotiating burnout, and affectively self-managing in order to meet norms of professionalism. Bringing participant narratives into conversations with feminist theories of affect, I argue for an account affective labour that centers the specific, materially embodied experiences of that work and for an account of neoliberalism as a system of embodied and affective pressures.