A novel pure rotary actuator with a double-layer flexible mechanism (RA-DFM), which is driven by single piezoelectric ceramic in the lower and generates rotational motion upper mechanism, proposed this paper. The output of successively amplified using an enhanced double Scott–Russell two lever-type mechanisms to obtain large rotation range. static, kinematic dynamic properties RA-DFM are numeri...

Russell body gastritis is a rare form of chronic gastritis. It is characterized by the invasion of lamina propria by plasma cells that included eosinophilic cytoplasmic inclusion. In the literature, most of the cases are associated with Helicobacter pylori. Russell body gastritis and Helicobacter pylori infection are generally seen together incidentally. We report here two cases of Russell body...

Frank Russell, 2nd Earl Russell (1865–1931), was a man of rational thought and social conscience who, released from his early imbroglios, embarked on controversial career, throwing name political weight behind range desperate but often successful causes. This bibliographical guide acknowledges labours, illustrates diversity demonstrates why deserves to be taken seriously.

Russell and Walker proposed different ways of constructing instants from events. As an explanation of “time as a continuum”, Thomason favoured Walker’s construction. The present paper shows that Russell’s construction fares as well. To this end, a mathematical characterization problem is solved which corresponds to the characterization problem that Thomason solved with regard to Walker’s constr...

The taxonomic status of the genus Ambengana Millidge & Russell-Smith, 1992, is revised on the basis of its original description, illustrations and re-examination of the type species. A new synonymy is proposed: Ambengana complexipalpis Millidge & Russell-Smith, 1992 (the type species of Ambengana) syn. n. with Neriene birmanica (Thorell, 1887). Therefore,the genus Ambengana Millidge & Russell-S...

In this paper, we examine the impact of including environmental, social and governance (ESG) criteria in allocation equity portfolios. We focus on risk return characteristics resulting ESG portfolios investment strategies. Two specific measures are considered to quantify performance a company; rating greenhouse gas (GHG) emission intensity. For both measures, carry out empirical portfolio analy...

Aiming at the fabrication of a micro-textured surface, novel piezoelectric-driven non-resonant elliptical vibrator is proposed in this paper; output characteristics could be adjusted by length change tool holder. The flexible mechanism primary structure vibrator, which includes lever type mechanism, an enhanced Scott–Russell and T-shaped mechanism. former two mechanisms are used to enlarge piez...

data envelopment analysis (dea) has been long employed as a popular methodology to evaluate the performance of various production activities with multiple inputs and outputs. however, an important issue is that the production process in the real world inevitably generates undesirable outputs (like wastes and pollutants) along with desirable outputs. therefore, the undesirable outputs should be ...