Diagrams have been rightly acknowledged to license inferences in Euclid’s geometric practice. However, if on one hand purely visual proofs are to be found nowhere in the Elements, on the other, fully fledged proofs of diagrammatically evident statements are offered, as in El. I. 20: “In any triangle the sum of two sides is greater than the third.” In this paper I will explain, taking as a starting point Kenneth Manders’ analysis of Euclidean diagram, how exact and co-exact claims enter proposition I. 20. Then, I will ultimately argue that this proposition serves broader explanatory purposes, enhancing control on diagram appearance. and Davide Crippa.
Within the frame of the mass discretisation method has been designed the mathematical - physical model of the pseudoplanetary system of seven degrees of freedom for the analysis of the influence of the number of satellites and for free or elastic mounting of the sun wheel as a next phase of the solution of general differential system with branched - split power flow.
Previous observation demonstrated that measured nucleolar and nuclear diameters and the resulting calculated ratio might facilitate estimation of the approximate size of the nuclear region occupied by the nucleolar bodies. The size of nuclear regions occupied by nucleolar bodies decreased during the differentiation and maturation of leukaemic lymphocytes, but was constant for each differentiation or maturation stage. The present study was
unde-taken to provide more information on the approximate size of the nuclear regions occupied by nucleolar bodies in leukaemic granulocytic progenitors. Myeloblasts of established Kasumi 1 and K 562 cell lineages originating from human myeloid leukaemias were convenient models for such study because they represented only one and early differentiation stage of granulocytic progenitors. According to the results, the maximal and mean nucleolar body : maximal and mean nuclear diameter ratios in myeloblasts without heavy nuclear alterations were stable and not markedly influenced by the anti-leukaemic treatment or aging. Thus, the roughly estimated size of nuclear regions occupied by nucleolar bodies in these cells appeared to be similar and stable regardless of aging or antileukaemic treatment. In contrast, the antileukaemic treatment or aging in such myeloblasts induced marked reduction of the nucleolar biosynthetic activity reflected by the decreased number of nucleolar fibrillar centres. and Corresponding author: Karel Smetana
A new application of the parametric anti-resonance is discussed. This phenomenon can be used not only for suppressing self-excited vibration or to reduce the externally excited vibration but also to suppressing self-excited vibration or to reduce the externally excited vibration but also to suppress the parametric resonance when certain conditions are met. Another aim is to stimulate further investigations and the practical applications. and Obsahuje seznam literatury
The aim of this contribution is to present a basic survey of publications dealing with the means of vibration suppression in several kinds of self-excitation. The attention is given to passive and active means using parametric excitation. A special attention is given to the latter and the necessary steps for answering important questions are formulated to initiate further investigation and especially application to real systems. and Obsahuje seznam literatury
The article analyses a surgical treatment of 506 patients taking inpatient treatment in the Center for colon proctology. All the patients underwent a comprehensive examination including radiological and tool test methods in addition to conventional clinical and laboratory ones. On the basis of the complex study, indications, volume and terms of surgery performance were determined. Performance of preand postoperative management of patients is substantiated in details. Postoperatively, 28 (5.5%) had postoperative wound pyesis in the region of the previous colostomy. In the postoperative period 2 (0.4%) deaths of patients were caused with peritonitis which occurred due to incompetence of anastomosis sutures. Rehabilitation of stomed patients is one of challenges in colorectal surgery. Positive results treatment can be obtained only at carrying out of a comprehensive outpatient and inpatient preoperative preparation including recommendations in diet, colostome care, hydrogymnastics of the disconnected part of the intestine and prevention of infectious complications., Isakulov T. U., Mamatkulov Sh. М., Rahmanov S.T., Matkarimov S. R., and Literatura