Books on the topic 'High pressure part'

This chapter focuses on the fifty actions proposed by the European Commission and its High Representative for Foreign Affairs and Security Policy in three priority areas to ensure safe, secure, clean and sustainably managed oceans: improving the international ocean governance framework; reducing pressure on oceans and seas and creating the conditions for a sustainable blue economy; and strengthening international ocean research and data. It also considers a number of policy proposals put forward by the EU with a view to improving the international ocean governance framework. Finally, it discusses the role of the EU in shaping international ocean governance on the basis of its experience in developing a sustainable approach to ocean management, notably through its environment policy, integrated maritime policy, reformed common fisheries policy, and its maritime transport policy.

Poorer renal function is associated with increasing morbidity and mortality. In the wider population this is mainly as a consequence of cardiovascular disease. Renal patients are more likely to progress to end-stage renal disease, but also have high cardiovascular risk. Aiming to reduce both progression of renal impairment and cardiovascular disease are not contradictory. Focusing on the management of high-risk patients with proteinuria and reduced glomerular filtration rates, it is recommended that blood pressure should be kept below 140/90, or 130/80 if proteinuria is > 1 g/24 h (protein:creatinine ratio (PCR) >100 mg/mmol or 0.9 g/g). These targets may be modified according to age and other factors. Angiotensin-converting enzyme inhibitors (ACEIs) or angiotensin receptor antagonists should form part of the therapy for patients with proteinuria > 0.5 g/24 h (PCR > 50 mg/mmol or 0.45 g/g). Use of ACEIs or angiotensin receptor blockers in patients with lower levels of proteinuria may be indicated in some patient groups even in the absence of hypertension, notably in diabetic nephropathy. Evidence that other agents that reduce proteinuria bring additional benefits is weak at present. The best studies of ‘dual-blockade’ with various combinations of ACEIs, ARBs, and renin inhibitors have shown additional hazard with little evidence of additional benefit. Hyperlipidaemia—regardless of lipid levels, statin therapy is indicated in secondary cardiovascular prevention, and in primary prevention where cardiovascular risk is high, noting that current risk estimation tools do not adequately account for the increased risk of patients with CKD. There is not substantial evidence that lipid lowering therapy impacts on average rates of loss of GFR in progressive CKD. Non-drug lifestyle interventions to reduce cardiovascular risk, including stopping smoking, are important for all. Acidosis—in more advanced CKD it is justified to treat acidosis with oral sodium bicarbonate. Diet—sodium restriction to < 100 mmol/day (6 g/day) and avoidance of excessive dietary protein are justified in early to moderate CKD. Recommendations to limit levels of protein to 0.8 g/kg body weight are suggested by some, but additional protective effects of this are likely to be slight in patients who are otherwise well managed. Low-protein diets may carry some risk. Lower-protein diets may however be used to prevent symptoms in advanced CKD not treated by dialysis.

A large part of the chapter is dedicated to the story of one of the biggest frauds in science. It is the story of Hendrik Schön and his fantastic discoveries in the field of molecular electronics, and how wrong and manipulated papers ended up getting published in the scientific journals Science and Nature. This provides a stimulus to think about the rules of modern science and how it puts high pressure on young researchers to obtain wonderful results. The last part of the chapter deals with the actual dimensions of fraud in science (still low but growing) and with the dimension of other phenomena such as general cases of misconduct.

Marketing vacuum cleaners in the UK largely followed US methods. Vacuum cleaner firms introduced a new form of direct selling to Britain, which was of enduring importance. Its popularity among suppliers was based on its effectiveness—reflected in high British diffusion rates for vacuums, relative to other high-ticket labour-saving appliances. However, unlike the United States—where vacuum cleaner salesmen were widely accepted as part of the retail culture—Britain saw much greater public opposition to unwanted high-pressure selling. A less commonly discussed adverse feature of the system was its treatment of the salesmen, many of whom struggled to earn even a basic labourer’s income. Many salesmen reacted by engaging in sharp practice, both through desperation and, often, in a conscious attempt to turn the tables on their employers.

Aluminum Alloy Castings: Properties, Processes and Applications is a practical guide to the process, structure, property relationships associated with aluminum alloy castings and casting processes. It covers a wide range of casting methods, including variations of sand casting, permanent mold casting, and pressure die casting, showing how key process variables affect the microstructure, properties, and performance of cast aluminum parts. Other chapters provide similar information on the effects of alloying and heat treating and the influence and control of porosity and inclusions. A significant portion of the book contains curated collections of property and performance data, including many previously unpublished aging response curves, growth curves, and fatigue curves; tensile properties at high and low temperatures and at room temperature after high-temperature exposure; the results of creep rupture tests conducted at temperatures from 212 to 600 °F (100 to 315 °C); and stress-strain curves obtained from casting alloys in various tempers under tensile or compressive loads. The book also discusses the factors that contribute to corrosion and fracture resistance and includes test specimen drawings as well as a glossary of terms. For information on the print version, ISBN 978-0-87170-803-8, follow this link.

This chapter’s objective is to investigate which factors—macroeconomic, policy-related, or institutional—foster the implementation of structural reforms. We therefore look at episodes of structural reforms over three decades across forty OECD and EU countries and link them to these factors. Our results suggest that structural reforms implementation is more likely during deep recessions and when unemployment rates are high. Moreover, the further it is distant from best practice, the more likely a country is to implement reforms. External pressures, such as being subject to a financial assistance programme, or being part of the European Single Market facilitated pro-competitive reforms. Low interest rates tend to promote rather than discourage structural reforms, while there seems no clear link between fiscal policy and reforms. Moreover, reforms in product markets tend to increase the likelihood of labour market reforms following suit. Many robustness checks have been carried out confirming our main results.

Doping in sport, with its connotations of unethical behaviour and harm to health, has existed since antiquity. In contemporary times, an acceleration of doping practices resulted in the eventual development of a robust legal and scientific framework now entrenched in the World Anti-Doping Code. Young athletes are not immune to the myriad pressures to excel that exist in high-level sport. Many of these athletes are subject to Anti-Doping regulations and therefore they (and their physicians) must be familiar with Anti-Doping procedures and processes, including the Prohibited List and Therapeutic Use Exemptions. Advances in analytical and non-analytical techniques and strategies have increased detection and accountability. As part of the athletic team, physicians are in a unique position to recognize vulnerabilities and signs of doping behaviour. This must enable them to positively impact the course of a young athlete’s trajectory in life.

The time is right to fight poverty, food insecurity and disease. The nexus of agriculture, development and health is presented, highlighting global health security threats of animal origin. Food and Agriculture Organization data illustrate how dynamic farming landscapes modulate livestock disease mosaics. In Latin America, lowland pressures facilitate successful transformation from extensive to intensive agricultural production. In South Asia, smallholders produce the bulk of milk in Asia, despite high disease prevalence and low productivity levels. Disease control improves food security and human and animal health and reduces land and water resources use. A One Health approach is called for to address the health of humans, animals and the environment, as part of sustainable development efforts. The perspective varies by location. Ecology, farming systems, economics and markets differ among world regions, as do the challenges. Despite emerging health security threats, progress has been made toward attaining the 2030 sustainable development goals.

This chapter explores the decline of the Associated Negro Press (ANP). It did not take long for the mainstream press to realize that the ANP was sitting on a journalistic goldmine with its direct pipeline to one of the biggest stories of the decade, if not the century: decolonization and how it intersected with the battle against Jim Crow. Claude Barnett was in an advance wave of African Americans descending upon Africa seeking to take advantage of the perceived gold rush delivered by decolonization. Another viselike pressure that the ANP found hard to resist was the other major force of that conflicted era: anticommunism. Unlike the past, the Negro press was now reluctant to hire talented writers with radical associations. As this high drama was unfolding, Barnett continued to live the good life in Chicago, making it difficult to grasp the far-reaching changes just over the horizon.

For the past almost fifty years, scientists have been trying to explain the phenomenon of superconductivity. The mechanism is the key ingredient of microscopic theory, which was developed by Bardeen, Cooper, and Schrieffer in 1957. The theory also introduced the basic concepts of pairing, coherence length, energy gap, and so on. Since then, microscopic theory has undergone an intensive development. This book provides a very detailed theoretical treatment of the key mechanisms of superconductivity, including the current state of the art (phonons, magnons, plasmons). In addition, the book contains descriptions of the properties of the key superconducting compounds that are of the most interest for science and applications. For many years, there has been a search for new materials with higher values of the main parameters, such as the critical temperature and critical current. At present, the possibility of observing superconductivity at room temperature has become perfectly realistic. That is why the book is especially concerned with high-Tc systems such as high-Tc oxides, hydrides with record values for critical temperature under high pressure, nanoclusters, and so on. A number of interesting novel superconducting systems have been discovered recently, including topological materials, interface systems, and intercalated graphene. The book contains rigorous derivations based on statistical mechanics and many-body theory. The book also provides qualitative explanations of the main concepts and results. This makes the book accessible and interesting for a broad audience.

Unlike the USA and Australia, Britain did nothing to prepare linguistically for war with Japan, so from December 1941 desperate measures were taken to train men and women in a hurry in a variety of courses. Those who learnt Japanese in this way went on to work as linguists, codebreakers, interrogators and translators. These courses were astoundingly successful, and the people chosen for them were brilliant and resourceful and many of them later had very distinguished careers. This book explains how it was done and what the linguists did with their skills – cryptography at Bletchley Park and at similar secret organizations in India, Mauritius and Australia, interrogating in the jungle, interpreting on the high seas and, eventually, policing the Occupation in Japan itself. It is a story of success against the odds under the pressure of wartime, and it is a story of remarkable people whose achievements have hitherto been neglected and kept secret.

This book describes an approach to classroom management and discipline based on attachment theory. An overview of attachment theory research and a detailed description of its implications for teaching and classroom management are provided. One teacher, Laura Ecken, and her second/third-grade class in a high-poverty school are chronicled across two years as she manages her class, guided by attachment theory. Laura’s day-by-day and week-by-week efforts to build caring, trusting relationships with and among her students are documented in detail. The many steps she takes to guide the class into becoming a caring, learning community while also meeting her students’ individual needs for autonomy, belonging, and competence are clearly described. Of course, not all goes well in this very real classroom, and how Laura manages the pressures of competition and students’ many misbehaviors, ordinary and serious, are clearly and sometimes humorously described. Laura’s teaching was not just about learning the academic curriculum or even about creating a supportive and friendly classroom, it was also about helping her students realize that their school learning was part of the process of composing their future lives. Such teaching is not easy and is counter to more controlling management approaches common in many schools. The book ends with a chapter that describes several students from Laura’s class seven years later, when they are in high school.

The Barents Sea is a region of the Arctic Ocean named after one of its first known explorers (1594–1597), Willem Barentsz from the Netherlands, although there are accounts of earlier explorations: the Norwegian seafarer Ottar rounded the northern tip of Europe and explored the Barents and White Seas between 870 and 890 ce, a journey followed by a number of Norsemen; Pomors hunted seals and walruses in the region; and Novgorodian merchants engaged in the fur trade. These seafarers were probably the first to accumulate knowledge about the nature of sea ice in the Barents region; however, scientific expeditions and the exploration of the climate of the region had to wait until the invention and employment of scientific instruments such as the thermometer and barometer. Most of the early exploration involved mapping the land and the sea ice and making geographical observations. There were also many unsuccessful attempts to use the Northeast Passage to reach the Bering Strait. The first scientific expeditions involved F. P. Litke (1821±1824), P. K. Pakhtusov (1834±1835), A. K. Tsivol’ka (1837±1839), and Henrik Mohn (1876–1878), who recorded oceanographic, ice, and meteorological conditions.The scientific study of the Barents region and its climate has been spearheaded by a number of campaigns. There were four generations of the International Polar Year (IPY): 1882–1883, 1932–1933, 1957–1958, and 2007–2008. A British polar campaign was launched in July 1945 with Antarctic operations administered by the Colonial Office, renamed as the Falkland Islands Dependencies Survey (FIDS); it included a scientific bureau by 1950. It was rebranded as the British Antarctic Survey (BAS) in 1962 (British Antarctic Survey History leaflet). While BAS had its initial emphasis on the Antarctic, it has also been involved in science projects in the Barents region. The most dedicated mission to the Arctic and the Barents region has been the Arctic Monitoring and Assessment Programme (AMAP), which has commissioned a series of reports on the Arctic climate: the Arctic Climate Impact Assessment (ACIA) report, the Snow Water Ice and Permafrost in the Arctic (SWIPA) report, and the Adaptive Actions in a Changing Arctic (AACA) report.The climate of the Barents Sea is strongly influenced by the warm waters from the Norwegian current bringing heat from the subtropical North Atlantic. The region is 10°C–15°C warmer than the average temperature on the same latitude, and a large part of the Barents Sea is open water even in winter. It is roughly bounded by the Svalbard archipelago, northern Fennoscandia, the Kanin Peninsula, Kolguyev Island, Novaya Zemlya, and Franz Josef Land, and is a shallow ocean basin which constrains physical processes such as currents and convection. To the west, the Greenland Sea forms a buffer region with some of the strongest temperature gradients on earth between Iceland and Greenland. The combination of a strong temperature gradient and westerlies influences air pressure, wind patterns, and storm tracks. The strong temperature contrast between sea ice and open water in the northern part sets the stage for polar lows, as well as heat and moisture exchange between ocean and atmosphere. Glaciers on the Arctic islands generate icebergs, which may drift in the Barents Sea subject to wind and ocean currents.The land encircling the Barents Sea includes regions with permafrost and tundra. Precipitation comes mainly from synoptic storms and weather fronts; it falls as snow in the winter and rain in the summer. The land area is snow-covered in winter, and rivers in the region drain the rainwater and meltwater into the Barents Sea. Pronounced natural variations in the seasonal weather statistics can be linked to variations in the polar jet stream and Rossby waves, which result in a clustering of storm activity, blocking high-pressure systems. The Barents region is subject to rapid climate change due to a “polar amplification,” and observations from Svalbard suggest that the past warming trend ranks among the strongest recorded on earth. The regional change is reinforced by a number of feedback effects, such as receding sea-ice cover and influx of mild moist air from the south.

This chapter carries out an in-depth analysis of the transformation of China's automobile industry and its labor force over the past two decades, with particular attention on how shop-floor, national, and global processes interact in complex ways to produce the specific industrial relations and dynamics of labor unrest in the Chinese automobile industry. It argues that the massive foreign investment in China's auto sector through joint ventures and the increased scale and concentration of automobile production have created and strengthened a new generation of autoworkers with growing workplace bargaining power and grievances. However, the acute contradictory pressures of simultaneously pursuing profitability and maintaining legitimacy with labor have driven large state-owned automakers and Sino-foreign joint ventures to follow a policy of labor force dualism, drawing boundaries between formal and temporary workers. While formal workers enjoy high wages, generous benefits, and relatively secure employment, temporary workers suffer comparatively low wages, unsecure employment, and heavier and dirtier job assignments. Temporary and other low-wage autoworkers have also become the main source of militancy in the auto industry.

Dramatic climate changes have occurred in the Baltic Sea region caused by changes in orbital movement in the earth–sun system and the melting of the Fennoscandian Ice Sheet. Added to these longer-term changes, changes have occurred at all timescales, caused mainly by variations in large-scale atmospheric pressure systems due to competition between the meandering midlatitude low-pressure systems and high-pressure systems. Here we follow the development of climate science of the Baltic Sea from when observations began in the 18th century to the early 21st century. The question of why the water level is sinking around the Baltic Sea coasts could not be answered until the ideas of postglacial uplift and the thermal history of the earth were better understood in the 19th century and periodic behavior in climate related time series attracted scientific interest. Herring and sardine fishing successes and failures have led to investigations of fishery and climate change and to the realization that fisheries themselves have strongly negative effects on the marine environment, calling for international assessment efforts. Scientists later introduced the concept of regime shifts when interpreting their data, attributing these to various causes. The increasing amount of anoxic deep water in the Baltic Sea and eutrophication have prompted debate about what is natural and what is anthropogenic, and the scientific outcome of these debates now forms the basis of international management efforts to reduce nutrient leakage from land. The observed increase in atmospheric CO2 and its effects on global warming have focused the climate debate on trends and generated a series of international and regional assessments and research programs that have greatly improved our understanding of climate and environmental changes, bolstering the efforts of earth system science, in which both climate and environmental factors are analyzed together.Major achievements of past centuries have included developing and organizing regular observation and monitoring programs. The free availability of data sets has supported the development of more accurate forcing functions for Baltic Sea models and made it possible to better understand and model the Baltic Sea–North Sea system, including the development of coupled land–sea–atmosphere models. Most indirect and direct observations of the climate find great variability and stochastic behavior, so conclusions based on short time series are problematic, leading to qualifications about periodicity, trends, and regime shifts. Starting in the 1980s, systematic research into climate change has considerably improved our understanding of regional warming and multiple threats to the Baltic Sea. Several aspects of regional climate and environmental changes and how they interact are, however, unknown and merit future research.

Any public debate about air pollution starts with the premise that air pollution cannot be good for you, so we should have less of it. However, it is much more difficult to determine how much is dangerous, and even more difficult to decide how much we are willing to pay for improvements in measured air pollution. Recent UK estimates suggest that fine particulate pollution causes about 6500 deaths per year, although it is not clear how many years of life are lost as a result. Some deaths may just be brought forward by a few days or weeks, while others may be truly premature. Globally, household pollution from cooking fuels may cause up to two million premature deaths per year in the developing world. The hazards of black smoke air pollution have been known since antiquity. The first descriptions of deaths caused by air pollution are those recorded after the eruption of Vesuvius in ad 79. In modern times, the infamous smogs of the early twentieth century in Belgium and London were clearly shown to trigger deaths in people with chronic bronchitis and heart disease. In mechanistic terms, black smoke and sulphur dioxide generated from industrial processes and domestic coal burning cause airway inflammation, exacerbation of chronic bronchitis, and consequent heart failure. Epidemiological analysis has confirmed that the deaths included both those who were likely to have died soon anyway and those who might well have survived for months or years if the pollution event had not occurred. Clean air legislation has dramatically reduced the levels of these traditional pollutants in the West, although these pollutants are still important in China, and smoke from solid cooking fuel continues to take a heavy toll amongst women in less developed parts of the world. New forms of air pollution have emerged, principally due to the increase in motor vehicle traffic since the 1950s. The combination of fine particulates and ground-level ozone causes ‘summer smogs’ which intensify over cities during summer periods of high barometric pressure. In Los Angeles and Mexico City, ozone concentrations commonly reach levels which are associated with adverse respiratory effects in normal and asthmatic subjects. Ozone directly affects the airways, causing reduced inspiratory capacity. This effect is more marked in patients with asthma and is clinically important, since epidemiological studies have found linear associations between ozone concentrations and admission rates for asthma and related respiratory diseases. Ozone induces an acute neutrophilic inflammatory response in both human and animal airways, together with release of chemokines (e.g. interleukin 8 and growth-related oncogene-alpha). Nitrogen oxides have less direct effect on human airways, but they increase the response to allergen challenge in patients with atopic asthma. Nitrogen oxide exposure also increases the risk of becoming ill after exposure to influenza. Alveolar macrophages are less able to inactivate influenza viruses and this leads to an increased probability of infection after experimental exposure to influenza. In the last two decades, major concerns have been raised about the effects of fine particulates. An association between fine particulate levels and cardiovascular and respiratory mortality and morbidity was first reported in 1993 and has since been confirmed in several other countries. Globally, about 90% of airborne particles are formed naturally, from sea spray, dust storms, volcanoes, and burning grass and forests. Human activity accounts for about 10% of aerosols (in terms of mass). This comes from transport, power stations, and various industrial processes. Diesel exhaust is the principal source of fine particulate pollution in Europe, while sea spray is the principal source in California, and agricultural activity is a major contributor in inland areas of the US. Dust storms are important sources in the Sahara, the Middle East, and parts of China. The mechanism of adverse health effects remains unclear but, unlike the case for ozone and nitrogen oxides, there is no safe threshold for the health effects of particulates. Since the 1990s, tax measures aimed at reducing greenhouse gas emissions have led to a rapid rise in the proportion of new cars with diesel engines. In the UK, this rose from 4% in 1990 to one-third of new cars in 2004 while, in France, over half of new vehicles have diesel engines. Diesel exhaust particles may increase the risk of sensitization to airborne allergens and cause airways inflammation both in vitro and in vivo. Extensive epidemiological work has confirmed that there is an association between increased exposure to environmental fine particulates and death from cardiovascular causes. Various mechanisms have been proposed: cardiac rhythm disturbance seems the most likely at present. It has also been proposed that high numbers of ultrafine particles may cause alveolar inflammation which then exacerbates preexisting cardiac and pulmonary disease. In support of this hypothesis, the metal content of ultrafine particles induces oxidative stress when alveolar macrophages are exposed to particles in vitro. While this is a plausible mechanism, in epidemiological studies it is difficult to separate the effects of ultrafine particles from those of other traffic-related pollutants.