972 resultados para AMERICA - HISTORY
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• Premise of the study: Because not all plant species will be able to move in response to global warming, adaptive evolution matters largely for plant persistence. As prerequisites for adaptive evolution, genetic variation in and selection on phenotypic traits are needed, but these aspects have not been studied in tropical species. We studied how plants respond to transplantation to different elevations on Mt. Kilimanjaro, Tanzania, and whether there is quantitative genetic (among-seed family) variation in and selection on life-history traits and their phenotypic plasticity to the different environments. • Methods: We reciprocally transplanted seed families of 15 common tropical, herbaceous species of the montane and savanna vegetation zone at Mt. Kilimanjaro to a watered experimental garden in the montane (1450 m) and in the savanna (880 m) zone at the mountain’s slope and measured performance, reproductive, and phenological traits. • Results: Plants generally performed worse in the savanna garden, indicating that the savanna climate was more stressful and thus that plants may suffer from future climate warming. We found significant quantitative genetic variation in all measured performance and reproductive traits in both gardens and for several measures of phenotypic plasticity in response to elevational transplantation. Moreover, we found positive selection on traits at low and intermediate trait values levelling to neutral or negative selection at high values. • Conclusions: We conclude that common plants at Mt. Kilimanjaro express quantitative genetic variation in fitness-relevant traits and in their plasticities, suggesting potential to adapt evolutionarily to future climate warming and increased temperature variability.
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Mycobacterium tuberculosis strains of the Beijing lineage are globally distributed and are associated with the massive spread of multidrug-resistant (MDR) tuberculosis in Eurasia. Here we reconstructed the biogeographical structure and evolutionary history of this lineage by genetic analysis of 4,987 isolates from 99 countries and whole-genome sequencing of 110 representative isolates. We show that this lineage initially originated in the Far East, from where it radiated worldwide in several waves. We detected successive increases in population size for this pathogen over the last 200 years, practically coinciding with the Industrial Revolution, the First World War and HIV epidemics. Two MDR clones of this lineage started to spread throughout central Asia and Russia concomitantly with the collapse of the public health system in the former Soviet Union. Mutations identified in genes putatively under positive selection and associated with virulence might have favored the expansion of the most successful branches of the lineage.
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Throughout human history, religion and politics have entertained the most intimate of connections as systems of authority regulating individuals and society. While the two have come apart through the process of secularization, secularism is challenged today by the return of public religion. This cogent analysis unravels the nature of the connection, disconnection, and attempted reconnection between religion and politics in the West. In a comparison of Western Europe and North America, Christianity and Islam, Joppke advances far-reaching theoretical, historical, and comparative-political arguments. With respect to theory, it is argued that only a “substantive” concept of religion, as pertaining to the existence of supra-human powers, opens up the possibility of a historical-comparative perspective on religion. At the level of history, secularization is shown to be the distinct outcome of Latin Christianity itself. And at the level of comparative politics, the Christian Right in America which has attacked the “wall of separation” between religion and state and Islam in Europe with the controversial insistence on sharia law and other “illiberal” claims from some quarters are taken to be counterpart incarnations of public religion and challenges to the secular state. This clearly argued, sweeping book will provide an invaluable framework for approaching an array of critical issues at the intersection of religion, law and politics for advanced students and researchers across the social sciences and legal studies, as well as for the interested public.
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The natural history of placebo treated travelers' diarrhea and the prognostic factors of recovery from diarrhea were evaluated using 9 groups of placebo treated subjects from 9 clinical trial studies conducted since 1975, for use as a historical control in the future clinical trial of antidiarrheal agents. All of these studies were done by the same group of investigators in one site (Guadalajara, Mexico). The studies are similar in terms of population, measured parameters, microbiologic identification of enteropathogens and definitions of parameters. The studies had two different durations of followup. In some studies, subjects were followed for two days, and in some they were followed for five days.^ Using definitions established by the Infectious Diseases society of America and the Food and Drug Administration, the following efficacy parameters were evaluated: Time to last unformed stool (TLUS), number of unformed stools post-initiation of placebo treatment for five consecutive days of followup, microbiologic cure, and improvement of diarrhea. Among the groups that were followed for five days, the mean TLUS ranged from 59.1 to 83.5 hours. Fifty percent to 78% had diarrhea lasting more than 48 hours and 25% had diarrhea more than five days. The mean number of unformed stools passed on the first day post-initiation of therapy ranged from 3.6 to 5.8 and, for the fifth day ranged from 0.5 to 1.5. By the end of followup, diarrhea improved in 82.6% to 90% of the subjects. Subjects with enterotoxigenic E. coli had 21.6% to 90.0% microbiologic cure; and subjects with shigella species experienced 14.3% to 60.0% microbiologic cure.^ In evaluating the prognostic factors of recovery from diarrhea (primary efficacy parameter in evaluating the efficacy of antidiarrheal agents against travelers' diarrhea). The subjects from five studies were pooled and the Cox proportional hazard model was used to evaluate the predictors of prolonged diarrhea. After adjusting for design characteristics of each trial, fever with a rate ratio (RR) of 0.40, presence of invasive pathogens with a RR of 0.41, presence of severe abdominal pain and cramps with a RR of 0.50, number of watery stools more than five with a RR of 0.60, and presence of non-invasive pathogens with a RR of 0.84 predicted a longer duration of diarrhea. Severe vomiting with a RR of 2.53 predicted a shorter duration of diarrhea. The number of soft stools, presence of fecal leukocytes, presence of nausea, and duration of diarrhea before enrollment were not associated with duration of diarrhea. ^
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List of Physicians and Surgeons arranged by location, giving post office address with population and location, the School practiced, date and college of graduation, all the existing and extinct medical colleges in North America, with locations, officers, number of professors, lecturers, demonstrators, etc., the various medical societies, penal, reformatory and charitable state institutions, hospitals, sanitariums, dispensaries, asylums and other medical institutions, boards of health, boards of medical examiners, health officers at principal points, the laws of registration and other laws relating to the profession, medical journals with names of editors, frequency of publication and subscription rates, medical libraries, a therapeutic classification of American health resorts, mineral springs, official list of officers of the medical departments of the U.S. Army, Navy and Marine Hospital Service, the U.S. Indian Service, roster of examining surgeons of the U.S. Pension Department, a descriptive sketch of each state, territory and province, embodying such matters as location, boundary, extent in miles and acres, latitude and longitude, statistics relating to climate, temperature, rate of mortality, etc. Full particulars of all national and inter-state associations and societies relating to medicine and surgery, and an INDEX TO THE PHYSICIANS OF THE UNITED STATES. Arranged alphabetically, with the number of the page and column in which the name appears.
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This paper makes reference to the importance lying, at present, on the professional education of counselors. It goes through the history of the different pre-scientific and scientific stages of counseling, and it points out the main representatives in Latin America . It also shows the current state of the specialization, taking as an antecedent some in-depth, widely encompassing research carried out in the European Union in this area. Coincidences and differences are exposed here in terms of professional profiles, university degrees, institutional dependence, up-dating processes and modes of intervention. The current state of postgraduate studies at university is also touched upon, and the different proposals for further education in Latin America are analyzed as well as their dependence upon an undergraduate degree in Psychology, Educational Sciences or Psycho-pedagogy. Finally, this paper places counseling within the complexity and the need to provide all-encompassing and integrative answers which require a wide and deep enough education so as to answer all these issues and problems.
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This paper makes reference to the importance lying, at present, on the professional education of counselors. It goes through the history of the different pre-scientific and scientific stages of counseling, and it points out the main representatives in Latin America . It also shows the current state of the specialization, taking as an antecedent some in-depth, widely encompassing research carried out in the European Union in this area. Coincidences and differences are exposed here in terms of professional profiles, university degrees, institutional dependence, up-dating processes and modes of intervention. The current state of postgraduate studies at university is also touched upon, and the different proposals for further education in Latin America are analyzed as well as their dependence upon an undergraduate degree in Psychology, Educational Sciences or Psycho-pedagogy. Finally, this paper places counseling within the complexity and the need to provide all-encompassing and integrative answers which require a wide and deep enough education so as to answer all these issues and problems.
Resumo:
This paper makes reference to the importance lying, at present, on the professional education of counselors. It goes through the history of the different pre-scientific and scientific stages of counseling, and it points out the main representatives in Latin America . It also shows the current state of the specialization, taking as an antecedent some in-depth, widely encompassing research carried out in the European Union in this area. Coincidences and differences are exposed here in terms of professional profiles, university degrees, institutional dependence, up-dating processes and modes of intervention. The current state of postgraduate studies at university is also touched upon, and the different proposals for further education in Latin America are analyzed as well as their dependence upon an undergraduate degree in Psychology, Educational Sciences or Psycho-pedagogy. Finally, this paper places counseling within the complexity and the need to provide all-encompassing and integrative answers which require a wide and deep enough education so as to answer all these issues and problems.
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The continental margin off the La Plata Estuary (SE South America) is characterized by high fluvial sediment supply and strong ocean currents. High-resolution sediment-acoustic data combined with sedimentary facies analysis, AMS-14C ages, and neodymium isotopic data allowed us to reconstruct late Quaternary sedimentary dynamics in relation to the two major sediment sources, the La Plata Estuary and the Argentine margin. Sediments from these two provinces show completely different dispersal patterns. We show that the northward-trending La Plata paleo-valley was the sole transit path for the huge volumes of fluvial material during lower sea levels. In contrast, material from the Argentine margin sector was transported northwards by the strong current system. Despite the large sediment volumes supplied by both sources, wide parts of the shelf were characterized by either persistent non-deposition or local short-term depocenter formation. The location and formation history of these depocenters were primarily controlled by the interplay of sea level with current strength and local morphology. The high sediment supply was of secondary importance to the stratigraphic construction, though locally resulting in high sedimentation rates. Thus, the shelf system off the La Plata Estuary can be considered as a hydrodynamic-controlled end-member.
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This paper gives a global summary of the number of constitutions and the number of articles in each constitution for many representative countries around the world. Several works have already been written comparing different legal systems and different constitutional traditions around the world; the purpose of this paper is just to compare the numbers of constitutions and articles in the diverse regions of the world, namely: North America, Latin America, Europe, Oceania, Middle East, Asia and Africa. Around the world, on average, Latin America has had the most convoluted constitutional history. The Dominican Republic has had a total of 32 constitutions, the largest number of constitutions of any country, since its independence in 1844. Three other countries have also had 20 or more constitutions throughout their history, all of them in Latin America: Venezuela (26), Haiti (24) and Ecuador (20). On the other hand, there are economies and societies that do not even have codified constitutions, like the United Kingdom in Europe, Hong Kong in Asia and New Zealand in Oceania. The United States has had only one constitution, even if it has been amended several times. There are also the special cases of Israel and Saudi Arabia, both in the Middle East, that do not have official written constitutions for historical and religious reasons. Comparative constitutional numbers and history help explain several things about the stability of political systems, but not necessarily about their quality.
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(1878 printing)