2,135 research outputs found

    Chronic cluster headache and the pituitary gland

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    Background: Cluster headache is classified as a primary headache by definition not caused by an underlying pathology. However, symptomatic cases of otherwise typical cluster headache have been reported. Case presentation: A 47-year-old male suffered from primary chronic cluster headache (CCH, ICHD-3 beta criteria fulfilled) since the age of 35 years. A magnetic resonance imaging (MRI) study of the brain in 2006 came back normal. He tried several prophylactic treatments but was never longer than 1 month without attacks. He was under chronic treatment with verapamil with only a limited effect on the attack frequency. Subcutaneous sumatriptan 6 mg injections were very effective in aborting attacks. By February 2014 the patient developed a continuous interictal pain ipsilateral to the right-sided cluster headache attacks. An indomethacin test (up to 225 mg/day orally) was negative. Because of the change in headache pattern we performed a new brain MRI, which showed a cystic structure in the pituitary gland. The differential diagnosis was between a Rathke cleft cyst and a cystic adenoma. Pituitary function tests showed an elevated serum prolactin level. A dopamine agonist (cabergoline) was started and the headache subsided completely. Potential pathophysiological mechanisms of pituitary tumor-associated headache are discussed. Conclusion: Neuroimaging should be considered in all patients with CCH, especially those with an atypical presentation or evolution. Response to acute treatment does not exclude a secondary form of cluster headache. There may be shared pathophysiological mechanisms of primary and secondary cluster headache

    Abatement of ammonia emissions from livestock housing fine-tuned according to impact on protected habitats

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    Livestock farms are an important source of ammonia emissions, which threaten vulnerable habitats and species in nearby natural areas through a process of atmospheric nitrogen deposition. An integrated and spatially-explicit mixed integer programming model was applied to all livestock facilities in Flanders (Belgium), to evaluate the current Flemish policies aimed at limiting ammonia deposition in Natura 2000 sites. The simulations indicate that a substantial reduction in deposition is achievable with a similar cost to the currently applied policy in Flanders. Furthermore, the model allows identification of the most suitable stable type and emission abatement measures for any stable in Flanders. Such a spatially-explicit optimization approach applied to individual emission sources might assist policymakers in improving spatially-differentiated policies

    Group Classification Of Linear Second-order Delay Ordinary Differential Equation

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    The linear delay ordinary differential equationy”(x) + a(x) y\u27(x) + b(x) y\u27(x −τ ) + c(x) y(x) + d(x) y(x −τ ) = g(x)is studied, where the coefficients a(x),b(x), c(x) and d(x) and function g(x) are arbitrary. In this manuscript, group analysis is applied to find equivalent symmetries of the equation

    The Impact of Capital Intensive Farming in Thailand: A Computable General Equilibrium Approach

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    The aim of this study is to explore whether efforts to encourage producers to use agricultural machinery and equipment will significantly improve agricultural productivity, income distribution amongst social groups, as well as macroeconomic performance in Thailand. A 2000 Social Accounting Matrix (SAM) of Thailand was constructed as a data set, and then a 20 production-sector Computable General Equilibrium (CGE) model was developed for the Thai economy. The CGE model is employed to simulate the impact of capital-intensive farming on the Thai economy under two different scenarios: technological change and free trade. Four simulations were conducted. Simulation 1 increased the share parameter of capital in the agricultural sector by 5%. Simulation 2 shows a 5% increase in agricultural capital stock. A removal in import tariffs for agricultural machinery sector forms the basis for Simulation 3. The last simulation (Simulation 4) is the combination of the above three simulations. The results for each simulation are divided into four effects: input, output, income and macroeconomic effects. The results of the first two simulations produced opposite outcomes in terms of the four effects. Simulation 2 accelerated the capital intensification of all agricultural sectors, whereas Simulation 1 led to more capital intensity in some agricultural sectors. The effects of the input reallocation had a simultaneous impact on output in every sector. Simulation 1 led to a fall of almost all outputs in the agricultural sectors, whereas there was an increase in agricultural output in Simulation 2. In terms of domestic income effects, as a result of the decline of the average price of factors in Simulation 1, there was a decrease in factor incomes belonging to households and enterprises. Consequently, government revenue decreased by 0.7%. In contrast, Simulation 2 resulted in an increase in all incomes above. Finally, regarding macroeconomic variables, Simulation 1 had a negative impact on private consumption, government consumption, investment, imports and exports, resulting in Gross Domestic Product (GDP) decreasing by 0.8%. On the other hand, Simulation 2 had a positive impact on those same variables, affecting a 0.4% rise of GDP. The effects of Simulation 3 were very small in everything compared with the first two simulations. The effect of Simulation 4 was mostly dominated by Simulations 1 and 2; the negative results of Simulation 1 were compensated by the positive effects of Simulation 2.Capital intensive farming, CGE, general equilibrium, SAM, Thailand, Agricultural and Food Policy, Crop Production/Industries, Environmental Economics and Policy, Farm Management, Productivity Analysis,

    Human resources for health: task shifting to promote basic health service delivery among internally displaced people in ethnic health program service areas in eastern Burma/Myanmar.

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    BACKGROUND: Burma/Myanmar was controlled by a military regime for over 50 years. Many basic social and protection services have been neglected, specifically in the ethnic areas. Development in these areas was led by the ethnic non-state actors to ensure care and the availability of health services for the communities living in the border ethnic-controlled areas. Political changes in Burma/Myanmar have been ongoing since the end of 2010. Given the ethnic diversity of Burma/Myanmar, many challenges in ensuring health service coverage among all ethnic groups lie ahead. METHODS: A case study method was used to document how existing human resources for health (HRH) reach the vulnerable population in the ethnic health organizations' (EHOs) and community-based organizations' (CBHOs) service areas, and their related information on training and services delivered. Mixed methods were used. Survey data on HRH, service provision, and training were collected from clinic-in-charges in 110 clinics in 14 Karen/Kayin townships through a rapid-mapping exercise. We also reviewed 7 organizational and policy documents and conducted 10 interviews and discussions with clinic-in-charges. FINDINGS: Despite the lack of skilled medical professionals, the EHOs and CBHOs have been serving the population along the border through task shifting to less specialized health workers. Clinics and mobile teams work in partnership, focusing on primary care with some aspects of secondary care. The rapid-mapping exercise showed that the aggregate HRH density in Karen/Kayin state is 2.8 per 1,000 population. Every mobile team has 1.8 health workers per 1,000 population, whereas each clinic has between 2.5 and 3.9 health workers per 1,000 population. By reorganizing and training the workforce with a rigorous and up-to-date curriculum, EHOs and CBHOs present a viable solution for improving health service coverage to the underserved population. CONCLUSION: Despite the chronic conflict in Burma/Myanmar, this report provides evidence of the substantive system of health care provision and access in the Karen/Kayin State over the past 20 years. It underscores the climate of vulnerability of the EHOs and CBHOs due to lack of regional and international understanding of the political complexities in Burma/Myanmar. As Association of Southeast Asian Nations (ASEAN) integration gathers pace, this case study highlights potential issues relating to migration and health access. The case also documents the challenge of integrating indigenous and/or cross-border health systems, with the ongoing risk of deepening ethnic conflicts in Burma/Myanmar as the peace process is negotiated

    The enterohepatic circulation of glutathione conjugates of xenobiotics in the rat

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