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An in vivo Evaluation of Ultra-fine Grained Titanium Implants

Journal of Materials Science & Technology 2009年第4期25卷 556-560页

作者： S. Bindu k.P. Sanosh k. smetana A. Balak.ishnan T.N. k.m Department of Life Science and Genetic Engineering Paichai University Department of Information and Electronic Materials Engineering Paichai University Charles University 1st and 2nd Faculty of MedicineInstitute of Anatomy and Center of Cell Therapy and Tissue Repair

The present work.focuses mainly on an in vivo evaluation of ultra fine grained titanium （UFG-Ti） obtained by severe plastic deformation （SPD）. The SPD on commercially produced Grade 2 titanium （Cp-Ti） resulted in the refinement of the grain size by several orders of magnitude. Polished surfaces having similar roughness from both UFG-Ti and Cp-Ti were prepared. In vitro test revealed the presence of fibronectin, which was involved in the attachment of the cells to the substrate. Phase contrast micrographs showed the highest signal of fibronectin in UFG-Ti, indicating that it is more cytocompatible than Cp-Ti. In vivo tests, by subcutaneous implantation of the metals in the rats showed the better biocompatibility of UFG-Ti over Cp-Ti. The improved biocompatibility of UFG-Ti was attributed to the presence of surface discontinuities （in the form of nano-defects）, surface energy, higher wettability, surface stress and stable TiO2 films, which increased the protein adsorption on the surface.

关键词： Surfaces Grain size Titanium In vivo Biocompatibility

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Minerals in edible insects:a review of content and potential for sustainable sourcing

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Food Science and Human Wellness 2024年第1期13卷 65-74页

作者： Mingxing Lu Chenxu Zhu Sergiy smetana Ming Zhao Haibo Zhang Fang Zhang Yuzhou Du College of Plant Protection&Institute of Applied Entomology Yangzhou UniversityYangzhou 225009China German Institute of Food Technologies(DIL e.V.) Quakenbrück D-49610Germany Jiangsu Plant Protection and Plant Quarantine Station Nanjing 210036China Joint International Research Laboratory of Agriculture and Agri-Product Safety Yangzhou UniversityYangzhou 225009China

In response to the rapid increase in world population and subsequent demands for food,edible insects represent an alternative food source for humans that is rich in proteins,amino acids and *** is a tradition in many countries including China and Thailand,and edible insects have attracted a lot of attention in Western World due to their suitable nutrient composition,high mineral content(e.g.,Fe,Zn,Ca,Mg)and potential use as a supplement in human *** this study,we surveyed mineral content in seven insect orders and 67 species of mass produced and wild-harvested edible *** total content of essential elements in edible insects was very high in Tenebrio molitor,Bombyx mori,and Zonocerus *** heavy metal content(summarized for eight species)was below the maximum limit allowed for safe *** supply of minerals derived from insect biomass is complicated due to the high variations of mineral content in insects and the potential of its change due to processing.

关键词： Edible insects Minerals Nutrition Food safety Sustainability

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Northwestward range expansion of the bumblebee Bombus haematurus into Central Europe is associated with warmer winters and niche conservatism

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Insect Science 2021年第3期28卷 861-872页

作者： Paolo Biella Alek.andar Cetk.vic Andrej Gogala Johann Neumayer Mik.os Sarospatak. Peter Sima Vladimir smetana Department of Biotechnology and Biosciences University of Milano-BicoccaMilanoItaly Faculty of Biology University of BelgradeBelgradeSerbia Department of Invertebrate Zoology Slovenian Museum of Natural HistoryLjubljanaSlovenia Obergrubstrafie ElixhausenAustria Department of Zoology and Ecology Szent Istvan UniversityGodolloHungary Department of Research and Development Koppert s.r.o.Nove ZamkySlovakia Department of Natural History Tekov MuseumLeviceSlovakia

Species range expansions are crucial for understanding niche formation and the interaction with the ***,we studied the bumblebee Bombus haematurus k.iechbaumer,1870,a species historically distributed from northern Serbia through northern Iran which has very recently started expanding northwestward into Central Europe without human-mediated dispersal(i.e.,it is a natural spread).After updating the global distribution of this species,we investigated if niche shifts took.place during this range expansion between newly colonized and historical *** addition,we have explored which climatic factors may have favored the natural range expansion of the *** results indicated that Bombus haematurus has colonized large territories in 7 European countries outside the historical area in the period from the 1980s to 2018,a natural expansion over an area that equals 20%of the historical *** addition,this bumblebee performs generalism in flower visitation and it occurs in different habitats,although a preference for forested areas clearly *** land-use associated with the species in the colonized areas is similar to the historical distribution,indicating that no major niche shifts occurred during the ***,in recently colonized localities,the range expansion was associated with warming temperatures during the winter and also during both queen overwintering and emergence *** findings document a case of natural range expansion due to environmental change rather than due to niche shifts,and specifically they suggest that warmer winters could be link.d to the process of natural colonization of new areas.

关键词： climate change insect conservation niche conservatism niche shift pollinator range expansion

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我的祖国第二首伏尔塔瓦河交响诗总谱

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丛书名：全国音乐院系教学总谱系列

2002年

作者：斯美塔那 smetana

本书收录了捷克斯洛伐克作曲家斯美塔那创作的《我的祖国》这组交响诗中的一首《伏尔塔瓦河》的总谱，描写了捷克秀丽的山河，并反映了捷克人民的生活。

ISBN: (纸本)7540427310

关键词：交响诗学科:总谱地点:捷克斯洛伐克年代:近代总谱

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Flight Vehicle Performance and Aerodynamic Control

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丛书名： AIAA Education Series

2001年

作者： Frederick.O. smetana

ISBN: (数字)9781600861857

ISBN: (纸本)9781563474637

Flight Vehicle Performance and Aerodynamic Control is designed to serve as a text for either an 11-week.or a 16-week.course at the sophomore level. It explains typical methods used to estimate aircraft performance, the theoretical basis of these methods, and how various parameters derived from the aircraft geometry can be used to estimate the requirements of control surfaces and the aerodynamic forces required to actuate these surfaces. This book.includes time-tested computer programs that perform the analyses in a manner that reduces student error and improves result accuracy. Because the source code is given, users with a FORTRAN compiler can modify the program to suit particular needs. The major advantage of the software is that more realistic problems may be treated and the effects of parametric programs are more accurate than calculators. The programs are available as executables for Windows machines as well as in ASCII source code versions that can be readily compiled and then executed on Unix, Linux, and Macintosh machines, and on mainframes.