RETROSPECTIVE STUDY OF CANINE EPITHELIAL AND MELANOCYTIC TUMORS

Out of the total number of canine tumors examined at th

Automatic control of haul truck travel speed on open pits

Expanding raw materials production demands necessitates higher exploitation rates and capacities. Therefore, open pit mines resort to increasing their overall depth and hence introduce further machine related technical problems. Haul trucks experience intensified dynamic effects during traveling, resulting in a significant maintenance cost increase. The most influencing effects occur during the truck braking and stopping process, especially when heavily loaded. Current technical solutions in most haul truck configurations disregard plethora of these effects to lower their production cost. The dynamic effects should be defined according to specific conditions on an open pit and applied for modifying currently employed systems for automatic truck speed control (ASC). It is the purpose of this paper to present the ASC system employed on the haul truck and key points for further modification and development. Firstly, the paper presents basic aspects of the truck braking/stopping process. Secondly, a description of the BelAZ 75306 traction drive and braking systems is provided, followed by key features of the BelAZ 75306 ASC system. Finally, presented information is summarized, indicating flaws and recommendations for further improvement of the BelAZ 75306 ASC system employed on the open pit - 'Veliki Krivelj', Bor, Serbia

HIV infection of non-dividing cells: a divisive problem

Understanding how lentiviruses can infect terminally differentiated, non-dividing cells has proven a very complex and controversial problem. It is, however, a problem worth investigating, for it is central to HIV-1 transmission and AIDS pathogenesis. Here I shall attempt to summarise what is our current understanding for HIV-1 infection of non-dividing cells. In some cases I shall also attempt to make sense of controversies in the field and advance one or two modest proposals

Evaluation of methods for normalizing muscle strength in elite and young athletes

Contains fulltext : mmubn000001_027560724.pdf (publisher's version ) (Open Access)Promotor : A. Knoers[6], 80 p

Experiences and procedures on making technical documentation for the objects of historical and cultural heritage

This paper evaluates advantages of application of digital photogrammetry for the purposes of production of technical documentation for the objects under protection, comparing it with the classical photogrammetric procedures. Based on gained experiences, paper reviews procedures for the completely digital production of technical documentation. Process of making technical documentation is divided in two logical stages. First stage comprises of photogrammetric recording, necessary field measurements and production of archive documentation. Archive documentation is in completely digital form and it includes: geometrically rectified photogrammetric photos, data on control points, parameters of exterior orientation for all photos and digital orthophotos as a preliminary source of geometric information. Second stage involves the production of detailed documentation with data describing object geometry such as: floor plans, facades, sections, etc, by using suitable CAD tools. Considering that this constitutes the most complicated and the most expensive part of making technical documentation, this stage is done when needed. Proposed method will be illustrated in paper by using experiences gained on projects of making technical documentations for objects of historical and cultural heritage for the towns of Kragujevac (Serbia and Montenegro) and Banja Luka (Republic of Srpska)

Anthropometric, strength, power and flexibility variables in elite male athletes : basketball, handball, soccer and volleyball players

Taille, poids, composition corporelle, force isométrique des extenseurs du genou, des extenseurs et fléchisseurs de la hanche, performance au saut vertical, souplesse des extenseurs du dos et de la hanch