A new computerized moving stage for optical microscopes

Hatiboglu, CU
Akın, Serhat
Measurements of microscope stage movements in the x and y directions are of importance for some stereological methods. Traditionally, the length of stage movements is measured with differing precision and accuracy using a suitable motorized stage, a microscope and software. Such equipment is generally expensive and not readily available in many laboratories. One other challenging problem is the adaptability to available microscope systems which weakens the possibility of the equipment to be used with any kind of light microscope. This paper describes a simple and cheap programmable moving stage that can be used with the available microscopes in the market. The movements of the stage are controlled by two servo-motors and a controller chip via a Java-based image processing software. With the developed motorized stage and a microscope equipped with a CCD camera, the software allows complete coverage of the specimens with minimum overlap, eliminating the optical strain associated with counting hundreds of images through an eyepiece, in a quick and precise fashion. The uses and the accuracy of the developed stage are demonstrated using thin sections obtained from a limestone core plug.


An easy-to-use MATLAB program (MamLand) for the assessment of landslide susceptibility using a Mamdani fuzzy algorithm
Akgun, A.; SEZER, EBRU; Nefeslioglu, H. A.; GÖKÇEOĞLU, CANDAN; Pradhan, B. (Elsevier BV, 2012-01-01)
In this study, landslide susceptibility mapping using a completely expert opinion-based approach was applied for the Sinop (northern Turkey) region and its close vicinity. For this purpose, an easy-to-use program, "MamLand," was developed for the construction of a Mamdani fuzzy inference system and employed in MATLAB. Using this newly developed program, it is possible to construct a landslide susceptibility map based on expert opinion. In this study, seven conditioning parameters characterising topographica...
Mathematical modeling of steam-assisted gravity drainage
Akın, Serhat (Elsevier BV, 2006-03-01)
A mathematical model for gravity drainage in heavy-oil reservoirs and tar sands during steam injection in linear geometry is proposed. The mathematical model is based on experimental observations that the steam zone shape is an inverted triangle with the vertex fixed at the bottom production well. Both temperature and asphaltene content dependence of viscosity of the drained heavy oil and their impact on heavy oil production are considered. The developed model has been validated using experimental data pres...
A short cut numerical method for determination of periods of free oscillations for basins with irregular geometry and bathymetry
Yalçıner, Ahmet Cevdet (Elsevier BV, 2007-04-01)
A short cut numerical method for evaluation of the modes of free oscillations of the basins which have irregular geometry and bathymetry is presented in this paper. In the method, a single wave is inputted to the basin as an initial impulse. The respective agitation in the basin is computed by using the numerical method solving the nonlinear form of long wave equations. The time histories of water surface fluctuations at different locations due to propagation of the waves in relation to the initial impulse ...
A BIM-based collaboration system in design phase of metro projects in turkish AEC industry
Kaş, Serhat; Akçamete Güngör, Aslı; Department of Civil Engineering (2019)
BIM is a 3D model that contains both geometric and non-geometric information. This comprehensive data enables BIM to be used for many different purposes during various phases of the projects. However, the quality and completeness of the data generated during the design phase are essential for supporting all other uses of BIM. Therefore, it could be considered that the more effectively the design authoring process can be managed, the more favorable it will be for all BIM processes. Nowadays, BIM processes ar...
A new modal superposition method for nonlinear vibration analysis of structures using hybrid mode shapes
Ferhatoglu, Erhan; Ciğeroğlu, Ender; Özgüven, Hasan Nevzat (Elsevier BV, 2018-07-01)
In this paper, a new modal superposition method based on a hybrid mode shape concept is developed for the determination of steady state vibration response of nonlinear structures. The method is developed specifically for systems having nonlinearities where the stiffness of the system may take different limiting values. Stiffness variation of these nonlinear systems enables one to define different linear systems corresponding to each value of the limiting equivalent stiffness. Moreover, the response of the n...
Citation Formats
C. Hatiboglu and S. Akın, “A new computerized moving stage for optical microscopes,” COMPUTERS & GEOSCIENCES, pp. 471–481, 2004, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/43524.