Paperback Books by Pawe

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This volume takes a look at the current state of the theory of foliations, with surveys and research articles concerning different aspects. The focused aspects cover geometry of foliated Riemannian manifolds, Riemannian foliations and dynamical properties of foliations and some aspects of classical dynamics related to the field. Among the articles readers may find a study of foliations which admit a transverse contractive flow, an extensive survey on non-commutative geometry of Riemannian foliations, an article on contact structures converging to foliations, as well as a few articles on conformal geometry of foliations. This volume also contains a list of open problems in foliation theory which were collected from the participants of the Foliations 2005 conference.

This book investigates theoretical and methodological fundamentals of the formation of investment maps as an instrument for the planning and regulation of investment operations at meso level. It includes information in integral and visualized form necessary for investors to make decisions. It presents an improved definition of investment policy, classification criteria of objectives of investment policy due to types, priority, purposes (intensification, stimulation) and implementation (state, regional, business), as well as practical results of research useful for the planning of investment operation in regions, conclusions and recommendations.

Influence of bone-bed preparation shape on the primary stability of conical andcylindrical implants.BackgroundPrimary stability of dental implants is dependent on several factors, including implant length and diameter, macro- and microstructure, quality and quantity of the host bone, and size of bone preparation. None of previous studies has reported data assessing the effect of the impact of the shape of the drill used for bone bed preparation, such as tapered (conical) drills, cylindrical drills, or the method of preparation such as gradual preparation.Aim/HypothesisThe aim of the study is to present the differences in primary stabilization of dental implants depending on implant type and the technique of the implant cradle preparation.Materials and MethodsAB Dental (Israel) tapered (conical) and cylindrical implants of different length (6mm, 11,5mm, 16 mm) and diameter (3,75 mm, 4,2 mm, 6 mm) were used.The implants cradles were prepared in three different ways:1. cylindrical preparation2. conical preparation3. gradual preparation.Together 216 implants'' cradles were performed -six cylindrical cradles for each tapered and each cylindrical implants, three conical cradles for each tapered and each cylindrical implants and three gradual cradles for each tapered and each cylindrical implants. The implants were inserted into isolated porkshoulders. Before implantsu2019 installation all porkshoulders were marked by gutta-percha points and scanned with computed tomography for compact bone thickness and bone density measurements. Next, a torque by a dynamometric key, a primary stabilization with Periotest, Ostell Mentor and pull-out test were performed. All measurements were averaged and statistically analyzed using ANOVA procedure of SAS System 9.2.ResultsPrimary stability is better for implants of 6,0 mm in diameter than for implants of 3,75 mm and 4,2 mm in diameter. Primary stability is better for implants of 16 mm in length than for implants of 11,5 and 8 mm in length. Primary stability is better in bone D2 than D3 and D4. Primary stability is better for tapered implants than for cylindrical ones. For tapered implants, the primary stability is better for conical and gradual bone-bed preparation than for cylindrical one. Cylindrical implants can be inserted only into cradles prepared using cylindrical drills.Conclusions and Clinical implicationsPrimary stability of dental implants depends on implant`s diameter and length, implant`s shape, as well as on the quality, quantity of the host bone and the type of bone-bed preparation. There is recommended to apply longer, wider and tapered implants to increase primary stabilization. Conical or gradual cradle preparations allow to achieve better mechanical implant stability especially in cases of poor bone quality.