O estudo de Trattinnickia burserifolia levou ao isolamento dos triterpenos conhecidos ursanos α-amirenona, α-amirina, 3-epi-α-amirina, 3α,16β-diidroxiurs-12-eno; oleananos β-amirenona, βamirina, 3-epi-β-amirina, 3α,16β-diidroxiolean-12-eno; tirucalanos ácidos 3α-hidroxitirucal-8,24dien-21-óico, 3α-hidroxitirucal-7,24-dien-21-óico, e 3-oxotirucal-8,24-dien-21-óico; damaranos dammarenediol-II e 3...

Meat quality is the generic term used to describe the properties and perceptions of meat which are generally considered to be colour, flavour, texture, tenderness and juiciness (Maltin et al., 2003), with tenderness considered as one of the most important traits (Miller et al., 2001). Meat tenderisation occurs primarily from the weakening of the myofibrillar structure in muscle fibres via the a...

Studies of the basic Cu sulfate minerals have existed for some time (Fowles 1926; Richmond and Wolfe 1940; Ungemach 1924). Such minerals are formed under specific conditions of pH and sulfate ion concentration. The minerals in this group are dolerophanite Cu2OSO4 (Richmond and Wolfe 1940), antlerite Cu3SO4(OH)4 (Araki 1961; Finney and Araki 1963), brochantite Cu4SO4(OH)6 (Helliwell and Smith 19...

The idiopathic inflammatory myopathies (IIM), classically dermatomyositis (DM), polymyositis (PM), and inclusion body myositis (IBM), are acquired systemic autoimmune disorders defined by chronic muscle weakness and inflammation of unknown aetiology. The combination of clinical, laboratory, electromyographic, and histological features is the basis of diagnosis, as well as exclusion of several m...

among different models for runoff estimation in watershed management, the soil conservation services-curve number (scs-cn) method along with its modifications have been widely applied to ungauged watersheds because of quickly and more accurate estimation of surface runoff. this approach has been widely accepted by hydrologists, water resources planners, foresters, and engineers, as well. theref...

I read with great interest the recent paper by Miller et al. (1) on the risk of leukemia among Ontario electric utility workers. Their paper appears to be an addendum to the paper published previously by The'riault et al. (2) on cancer risks among electric utility workers in Ontario, Quebec, and France. The'riault et al. presented data on the risk of occupational exposure to extremely low frequ...

In positive systems, inputs, state variables and outputs take only nonnegative values. Examples of positive systems are industrial processes involving chemical reactors, heat exchangers and distillation columns, storage systems, compartmental systems, water and atmospheric pollution models. A variety of models behaving as positive linear systems can be found in engineering, management science, ...

We present a simulation environment, Plasticity, which allows the user to perform a wide variety of simulations of rate-based neural networks. The package focuses on, but is not limited to, simulations of visual neurons and allows one to compare on equal footing many of the most common learning rules. This includes variants of Hebbian learning(Linsker, 1986; MacKay and Miller, 1994; Erwin and M...