Solar array study for solar electric propulsion spacecraft for the Encke rendezvous mission

The work is described which was performed on the design, analysis and performance of a 20 kW rollup solar array capable of meeting the design requirements of a solar electric spacecraft for the 1980 Encke rendezvous mission. To meet the high power requirements of the proposed electric propulsion mission, solar arrays on the order of 186.6 sq m were defined. Because of the large weights involved with arrays of this size, consideration of array configurations is limited to lightweight, large area concepts with maximum power-to-weight ratios. Items covered include solar array requirements and constraints, array concept selection and rationale, structural and electrical design considerations, and reliability considerations

The introduction of rapid diagnostic test for malaria in Mozambique: local appropriation and complementary therapeutics

In 2008 Mozambique's Ministry of Health (MoH), with the technical and financial support of transnational and international organisations such as United Nations (UN) agencies, USAID (United States Agency for International Development) and INGOs (International Non-Governmental Organisations), amongst others, introduced the Rapid Diagnostic Test (RDT) for malaria to be implemented across the country. This new biomedical technology impacted not just clinical practice, where health workers had to draw blood to be able to diagnose malaria (parasitological confirmation), but interacted with local worldviews and therapeutic practices in ways that needed to be incorporated into therapeutic interventions, notwithstanding patients' overall acceptance of the reliability of RDTs.info:eu-repo/semantics/publishedVersio

Local interpretations on malaria and the discourse on the traditional health care providers in southern Mozambique

The narratives on the diagnosis and causes of malaria are diverse and apparently ambiguous, being based beyond the body, on the social relations among peers, their ancestors, and nature. Based on a qualitative study and a four-year stay in Mozambique, this article analyzes the discourses of patients and biomedical practitioners on traditional health care providers, i.e., tinyanga and zion pastors, linking them to local terminology of malaria, in a rural district in southern Mozambique. In the current context of therapeutic pluralism and high mobility, the lack of solidarity and compassion attributed to tinyanga is supported by the monetization and commodification of their medicinal rituals and knowledge, as well as by competition with other providers in attracting patients. The implementation of zion churches, of Christian nature and performing therapeutic practices similar to tinyanga, is presented as a local advantageous solution due to the strong community connection, the comfort and reciprocity among the members, and the therapeutic results at low cost. In terms of health care policies and clinical practice, the invisibility of zion pastors and the subordinate role of healers is managed according to interests, based on vague ideas and prejudices from biomedical providers. The implementation of health policies that address the local diversity, the existing power relations and medical knowledge and practices can strengthen the biomedical care services and harmonize relations between the providers and the population.info:eu-repo/semantics/publishedVersio

Primary Disorders of Neurotransmitter Metabolism: Experience of a Tertiary Center

Neurotransmitter diseases are a group of inherited disorders attributable to a disturbance of neurotransmitter metabolism. Biogenic amines are neurotransmitters with multiple roles including psychomotor function, hormone secretion, cardiovascular, respiratory and gastrointestinal control, sleep mechanisms, body temperature and pain. Given the multiple functions of monoamines, disorders of their metabolism comprise a wide spectrum of manifestations, with motor dysfunction being the most prominent clinical feature. Methods: Case review of 12 patients from 4 families, with primary disorders of biogenic amine metabolism. Results: Aromatic L-amino acid decarboxylase deficiency (4 patients from 2 families), and GTP-cyclohydrolase (8 patients from 2 families) were the two diseases identified. Age at first symptoms varied between 2 months and 6 years. Developmental delay was present in all cases except 2 patients with GTP cyclohydrolase deficiency. The combination of axial hypotonia and limb dystonia was also frequent. Children with aromatic L-amino acid decarboxylase deficiency exhibited temperature instability, oculogyric crisis and disturbances of sleep. The index case of one family with GTP cyclohydrolase deficiency presented with Parkinsonism (bradykinesia, rigidity and hypomimia). Analysis of neurotransmitters and their metabolites in CSF was crucial for the identification of index cases. Response to therapy was variable but in general unsatisfactory except in a family with GTP cyclohydrolase deficiency. Conclusions: These disorders should be considered in the differential diagnosis of paediatric neurodegenerative diseases, in order to allow an adequate therapeutic trial that can favor prognosis

Who and where is the renal baroreceptor?: the connexin hypothesis

Gap junctions are emerging as a fundamental mechanism for the control of renin synthesis and release. Connexin40 is prominent in juxtaglomerular cells. When missing, it results in hyperreninemia and hypertension. Schweda et al. offer exciting data demonstrating that connexin45, a connexin with different biophysical properties, can replace connexin40 functions related to the control of renin

Maximizing the impact of mining investment in water infrastructure for local communities

Mining activities requiring the development of new or expansion of existing water infrastructure provide an opportunity to benefit local communities with limited access to clean water. Mining companies have commonly assisted water service provision to communities as part of their mining concession or through corporate social responsibility programs. In addition to the water infrastructure provided to local communities, the accompanying capacity building, infrastructure governance, and the consultation process all have notable impacts not only on the sustainability of the water infrastructure, but also the level of benefit to communities. Using recent Australian Government funded water and sanitation interventions along the Nacala Economic Corridor (Mozambique) as a case study, we provide an examination of how mining companies can most effectively ensure the delivery of sustainable water infrastructure to local communities

Teucrium francoi M. Seq., Capelo, J.C. Costa & R. Jardim, a new species of Teicrium gr. scorodonia (Lamiaceae) from Madeira

The species formerly recognized as Teucrium scorodonia in Madeira is here described as new: Teucrium francoi M. Seq., Capelo, J.C. Costa & R. Jardim. Morphologically close to species of Teucrium gr. scorodonia [T. scorodonia L., T. pseudoscorodonia Desf., T. siculum (Raf.) Guss. and T. kotschyanum Poech], it exhibits, nonetheless, some distinct diagnostic characters. The indumentum density and type of hairs of T. francoi are clearly distinct from those of related species, as are the shape and dimensions of the leaves and bracts, calyx, and corolla, which are all taken as taxonomically significant diagnostic features. A diagnosis and a distribution map are presented for this new species. Morphology, ecology, biogeography, and conservation issues are discussed. Teucrium francoi, which is an endemic from Madeira (Portugal), is to be found mostly in the scope of the association Teucrio francoi– Origanetum virentis J.C. Costa, Capelo, Jardim, Sequeira, Lousã & Rivas-Martínez, but also occurs in somewhat humid habitats, such as open stands of Rosa mandonii Déségl. associated with small stream