Validation of Rapid Prototyping Material for Rapid Experimental Stress Analysis

The paper will detail the validation work carried out on various Rapid Prototyping (RP) materials to determine their suitability for the application of Thermoelastic Stress Analysis. The overall objective is to drastically reduce the product design cycle, by providing "real experimental data" for correlation with Finite Element Analysis (FEA), prior to any expensive manufacturing process. In order to achieve this the homogeneity of the Rapid Prototyping material has to be established to ensure a valid transfer of results from model to actual part.Mechanical Engineerin

Progress with the trial phase for registration of new plant names

In a spirit of co-operation and to publicise this proposed innovation in plant nomenclature widely in southern Africa, this note has been submitted simultaneously to the following botanical journals: Bothalia, South African Journal of Botany, Forum Botanicum and SAB-ONET News. A trial phase for the registration of new plant names in South Africa, co-ordinated by the International Association of Plant Taxonomy in Berlin, is introduced. Registration can be effected by publishing a new name in an accredited journal or series or by submitting it to the national Registration Office established for this purpose

What's in a name: an update on epithets used in <i>Aloe</i> L. (Asphodelaceae)

This paper updates the previously published list (Figueiredo & Smith, 2010) of 876 epithets used in the genus Aloe L.(Asphodelaceae). A further 32 epithets are added to the list. Some epithets for which derivations could not be traced at the time are relisted here with their meaning. This addition brings to 908 the total number of unique epithets used in the genus at specific, subspecific and varietal ranks. The list of epithets provided here includes their dates of application, meaning and derivation

Weakly nonlocal fluid mechanics - the Schrodinger equation

A weakly nonlocal extension of ideal fluid dynamics is derived from the Second Law of thermodynamics. It is proved that in the reversible limit the additional pressure term can be derived from a potential. The requirement of the additivity of the specific entropy function determines the quantum potential uniquely. The relation to other known derivations of Schr\"odinger equation (stochastic, Fisher information, exact uncertainty) is clarified.Comment: major extension and revisio

Purex Plant chemical flowsheet for the 1970 thorium campaign

The chemical flowsheets recommended for the 1970 thorium campaign are presented and are basically the same as those used for the 1966 campaign. (LK

Caputia tomentosa

Caputia, a genus belonging to the daisy family, the Asteraceae, consists of just five species of succulents confined to South Africa and Swaziland. Caputia tomentosa (formerly Kleinia tomentosa or Senecio haworthii) is unique in the genus in having dense silvery-white persistent tomentum and disciform capitula (inflorescences). Its very long and complex taxonomic and nomenclatural history are outlined. Its habitat, natural distribution, ecology and cultivation are discussed, accompanied by a full description and specially commissioned reproduction of a watercolour painting

Ovule, seed and seedling characters in Acharia (Achariaceae) with evidence of myrmecochory in the family

An investigation of mature seed structure in Guthriea capensis and ovule-to-seed development in Acharia tragodes indicate that the two species are herbaceous myrmecochores with similar adaptations for seed dispersal and germination. The development and structure of the modified seed tissues, namely a sarcotestal elaiosome, a fringe layer in the mesotesta, endotestal-exotegmic mechanical layers and a chalazal seed lid are described. Additional embryological similarities between the two taxa include, amongst others, sessile ovules, distally lobed outer integuments, zigzag micropyle canals formed by both integuments, bisporic Allium Type embryo sacs, suspensorless embryos belonging to the Penaea Variation of the Asterad Type, and small embryos in the mature seed. In Acharia intraseminal embryo growth occurs before radicle emergence, germination is epigeal and seedlings belong to the Macaranga Type

Artemisinin-based combination therapy does not measurably reduce human infectiousness to vectors in a setting of intense malaria transmission

&lt;p&gt;Background: Artemisinin-based combination therapy (ACT) for treating malaria has activity against immature gametocytes. In theory, this property may complement the effect of terminating otherwise lengthy malaria infections and reducing the parasite reservoir in the human population that can infect vector mosquitoes. However, this has never been verified at a population level in a setting with intense transmission, where chronically infectious asymptomatic carriers are common and cured patients are rapidly and repeatedly re-infected.&lt;/p&gt; &lt;p&gt;Methods: From 2001 to 2004, malaria vector densities were monitored using light traps in three Tanzanian districts. Mosquitoes were dissected to determine parous and oocyst rates. Plasmodium falciparum sporozoite rates were determined by ELISA. Sulphadoxinepyrimethamine(SP) monotherapy was used for treatment of uncomplicated malaria in the contiguous districts of Kilombero and Ulanga throughout this period. In Rufiji district, the standard drug was changed to artesunate co-administered with SP (AS + SP) in March 2003. The effects of this change in case management on malaria parasite infection in the vectors were analysed.&lt;/p&gt; &lt;p&gt;Results: Plasmodium falciparum entomological inoculation rates exceeded 300 infective bites per person per year at both sites over the whole period. The introduction of AS + SP in Rufiji was associated with increased oocyst prevalence (OR [95%CI] = 3.9 [2.9-5.3], p &lt; 0.001), but had no consistent effect on sporozoite prevalence (OR [95%CI] = 0.9 [0.7-1.2], p = 0.5). The estimated infectiousness of the human population in Rufiji was very low prior to the change in drug policy. Emergence rates and parous rates of the vectors varied substantially throughout the study period, which affected estimates of infectiousness. The latter consequently cannot be explained by the change in drug policy.&lt;/p&gt; &lt;p&gt;Conclusions: In high perennial transmission settings, only a small proportion of infections in humans are symptomatic or treated, so case management with ACT may have little impact on overall infectiousness of the human population. Variations in infection levels in vectors largely depend on the age distribution of the mosquito population. Benefits of ACT in suppressingtransmission are more likely to be evident where transmission is already low or effective vector control is widely implemented.&lt;/p&gt

Recommendations to the Musculoskeletal Health Network, Health Department of Western Australia related to the Spinal Pain Model of Care made on behalf of the Chiropractors Association of Australia (Western Australian Branch)

The 2009 Spinal Model of Care published by the Western Australian Health Department via the Musculoskeletal Health Network would benefit from an update. Best-evidence synthesis and cost-risks-benefits estimations suggest that such guidelines should provide: (1) the early assessment of patients with non-malignant spinal pain (particularly low back) by a musculoskeletal clinician, be it a chiropractor, musculoskeletal physician, osteopath or musculoskeletal physiotherapist with referral within the early stages of the disorder; and (2) the provision of manipulative therapy, where indicated, as a first-line treatment while also providing rehabilitation, health promotion, and contemporary wellness/wellbeing management with the intention of avoiding chronicity. Emerging workforce capacity suggests that early assessment and evidence-based management of non-malignant spinal pain is feasible, leading to better patient outcomes. The authors and the association are hopeful that providing this submission in open access may prove useful for advocates of the chiropractic profession in other jurisdictions