Mechanical Properties and Mineralogical Composition of Potash Ore as a Factor in Selecting the Processing Method

The correct selection of technology for processing potash ore depends on its mineralogical composition, the natural size and shape of grains, as well as on the amount and size of halite grains located in the intergranular space of sylvinites. The study of seams and mineralogical and petrographic studies of potash ore were carried out in order to determine the natural size of sylvinite grains, their shape, and the content of halite in the intergranular space.Moreover, the influence of these parameters on the beneficiation ability of the ore using dry cleaning process was determined. In addition, the data on laboratory studies using electric separation is provided in the paper. The results of the provided studies can be used by specialists of the mining industry when considering the influence of the mineral composition, size and shape of grains of potash ore in order to select the separation method at the early stages of development of potash deposits. The study of core material and mechanical properties, mineralogical and petrographic studies together with studies on beneficiation ability of ore presented in the article can be used, for example, in the preparation of a feasibility report.

Nomenclatural status and possible identity of Aperioptus pictorius (Teleostei: Gonorynchidae [?] and Cobitidae)

Richardson (1848) described Aperioptus pictorius based on two syntypes from “Borneo”. The description is based partly on a drawing of the whole fish and a close-up of its mouth parts (Fig. 1b). Richardson explained that at the time of writing the description, he no longer had access to the specimens: he had given them to the artist, after having examined them cursorily. After having made the first sketch, the artist placed them in water to have the fins expanded, then forgot about them when he threw out the water, and they were lost. The whole description reads: “The general aspect of the fish is that of a slender Galaxias, but there are no teeth on the jaws. The orifice of the mouth is a narrow vertical oval, which is restricted on the sides by membranous processes. The figure is of the natural size [about 65 mm SL]. Hab. Borneo”. He also indicated:

Research and investigation of women’s dress pattern

The aim of this paper is to research and investigate the women’s dress pattern by using conventional women’s dress constructions, more specifically by comparing three different ways of constructing women’s dress patterns. Women’s dress construction methods of B. Knez, J. Slavicek and „Rundschau” are compared and respective women’s dress prototypes are made from calico. Based on the best features and visible results obtained from the three pattern constructions, as well as the appropriate body-related adaptability, a new women’s dress pattern is produced featuring different pattern parts in natural size. The new women’s dress pattern is investigated and used in the education of next generation fashion and costume designers in view of practical application.

A “Cidade Medieval” de Goiás: o conjunto arquitetônico Lago Ideia Molhada em Hidrolândia – Goiás

Resumo: O presente artigo pretende problematizar o cenário de inspiração medieval construído pelo ex-prefeito da cidade de Aparecida de Goiânia, Goiás, Freud de Melo em sua propriedade no município de Hidrolândia (GO), onde funciona(va) o Hotel Fazenda Lago Ideia Molhada, um conjunto arquitetônico composto por 37 castelos, uma interpretação livre em tamanho supostamente natural da Arca de Noé, mais de 300 esculturas de animais e monstros lendários dentre outras coisas. Partimos fundamentalmente dos conceitos de Medievalidades e Pastiche, procurando analisar esse conjunto de obras em seu sentido simbólico, artístico e cultural. Goiá’s “Medieval City”: the Lake Ideia Molhada Architectural Set in Hidrolândia – Goiás This article aims to discuss the medieval inspiration scenario built by the former mayor of the city Aparecida de Goiânia, Goiás, Brazil, Freud de Melo on his property in the municipality of Hidrolândia (GO), where work(ed) the Farm Hotel Lake “Ideia Molhada”, an architectural complex composed of 37 castles, a supposedly natural size free interpretation of Noah's Ark, over 300 sculptures of animals and legendary monsters among other things. We fundamentally start from the concepts of Medieval and Pastiche, trying to analyze this set of works in its symbolic, artistic and cultural sense.

Alternative technology for creating nanostructures using Dip Pen Nanolithography

For modern microelectronics, at the present time, the technologies of consciousness smart structures play an important role, which can provide accuracy, stability and high quality of the structures. Submicron lithography methods are quite expensive and have natural size limitations, not allowing the production of structures with an extremely small lateral limitation. Therefore, an intensive search was conducted for alternative methods for creating submicron resolution structures. Especially attractive one is the possibility of self-organization effects utilization, where the nanostructure of a certain size is formed under the influence of internal forces. The dip pen nanolithography method based on a scanning probe microscope uses a directwrite technology and allows one to carry out a playback of small size structures with high accuracy. In the experiment, a substrate coated with Au (15 nm) using a DPN technique is applied to the polymer to form a desired pattern nano-sized channel. The experiment was conducted using a pointed probe SiN, coated MHA-Acetonitrile, on the Si(111)/Fe_3Si/Au structure.