Proper values of physical and mechanical properties and their homogeneity are one of major requirements deciding about technological suitability of the rocks quarried to manufacturing aggregates. These properties depend on the natural features of a rock, its mineral composition, texture and structure. The characteristic of aggregates and the technical requirements they must meet are normalized in adequate standards that describe the procedures of conducting particular determinations and the methods of interpreting their results. In the basaltoids (usually called basalts) of selected deposits of Lower Silesia that represent different intrusive forms, five textural varieties have been distinguished: aphanitic, aphanitic-porphyritic, porphyritic-aphanitic, porphyritic-nodular and nodular-porphyritic. The petrography and essential physical and mechanical properties of these varieties have been described in Tables 1 and 2, respectively. The highest technical parameters have the aphanitic and aphanitic-porphyritic rock varieties. They result mainly from the textures of these rocks and their insignificant weathering, and to a lesser degree from their mineral composition. The resistance to wear (micro-Deval) and the resistance to fragmentation (Los Angeles) of the aggregates that represent the grain fraction 10-14 mm of the five varieties of basaltoids and the rock composites were determined according to the standards PN-EN 12620: 2008 and PN-EN 13043: 2004. Of the aggregates produced from the five major varieties, only those made of the nodular-porphyritic basaltoids have the properties of lower categories, whereas the remaining four are the materials of very high quality. Additionally, it has been shown that by combining various basaltoid types it is possible to produce composite aggregates with the variable qualities belonging to the categories LA and MDE (Tab. 3). The effect of rock petrography on the differentiation of the parameters of aggregates depending on the grain fraction of the products (Fig. 1, Tab. 4) is the lowest in the case of the aggregates produced from the homogenous and not weathered rock. In contrast, the range of variability of the parameters is higher if the starting material to produce aggregates is composed of several textural varieties and shows signs of weathering as well. The possibility of delineation of the areas occupied in the deposit by basaltoids with specific textural varieties creates the conditions of determining the rock zones, from which the aggregates of the predicted quality may be produced. This quality may be controlled and partly changed to the user needs by producing aggregates from the specially prepared rock mixtures (i.e. the charge to crushers) with specified proportions of the basaltoid varieties.
The text discusses the problems of sensory processing disorders (SPD) and their impact on difficulties children have at school. Individual categories of sensory processing disorders were characterized and examples of behavior of children who may have those problems were described. Certain strategies which teachers can use when working with a child with SI disorders were also offered.
It should be noted that the early diagnosis of symptoms that may indicate the occurrence of sensory processing disorders, followed by apt diagnosis and therapy allow children to function properly in the school environment and positively influence their self-esteem. This in turn facilitates the process of learning and contributes future success.
W transcendentalnej dedukcji kategorii, w drugim wydaniu Krytyki czystego rozumu, Kant wprowadza termin „formalna naoczność” (formale Anschauung), ukazując w ten sposób, że określenie to zawiera bogatszą treść niż „forma naoczności” (Form der Anschauung). Wiąże się to z określaniem, tj. determinowaniem czystej formy naoczności, które dokonuje się za sprawą syntezy postaciowej, będącej wytworem wyobraźni, ale przy współudziale kategorii. Rozważam m.in. kwestię, jak należy rozumieć jedność przestrzeni i co jest źródłem owej jedności. Przy okazji analizuję ważne i trudne pojęcie różnorodności (Mannigfaltigkeit), które – jak się wydaje – leży u podstaw różnicy między dwoma sposobami ujęcia przestrzeni jako czystej naoczności.
One of the main traits of a society of reflexive modernity is the critical analysis of categories that in the past appeared unquestionable. Socio-cultural gender and health or illness/mental disorders are categories of this type. Above all, they are socially constructed, that is, they are dependent on culture and on political, economic, and religious factors. The author undertakes to analyse the relations between the diagnostic criteria used in the international system of classifying mental diseases (DSM-IV and ICD-10) and traditional schemas of masculinity and femininity. Confirmation of the incidence of particular diseases in connection with gender is the author’s entry point for seeking answers to why individuals suffering from certain illnesses/mental disorders display behaviour corresponding to traditional gender roles, even though contemporary gender roles are fluid in many respects, and hypotheses about biological differences as causes of incidence of disease in men and women have not been empirically confirmed.