نتایج جستجو برای: grid pattern laser

تعداد نتایج: 608233  

2016
M. Fermigier P. Jenffer J. C. Charmet E. Guyon

2014 We present a new visualization technique of an hydrodynamic flow using a thermal grid, « written » in the liquid by means of a pulsed laser, and whose image is subsequently formed, using standard optics, by illumination by a continuous laser. The experiment gives access to a new Doppler-anemometric technique which does not involve the presence of particles in the fluid and to an instantane...

Journal: :acta medica iranica 0
m.h. dehghan a.s. seddighi a. seddighi

due to the importance of clinically significant macular edema in diabetic patients, this study is aimed to determine if laser photocoagulation is effective in the treatment of clinically significant diabetic macular edema. in addition, the effects of risk factors arc surveyed* this is an existing data study considering patients with clinically significant diabetic macular edema, treated with ar...

Journal: :Scientific Programming 2003

Journal: :Remote Sensing 2011
Sakari Tuominen Reija Haapanen

Forest management planning in Finland is currently adopting a new-generation forest inventory method, which is based on interpretation of airborne laser scanning data and digital aerial images. The inventory method is based on a systematic grid, where the grid elements serve as inventory units, for which the laser and aerial image data are extracted and the forest variables estimated. As an alt...

Journal: :Arquivos brasileiros de oftalmologia 2014
Luiz Alberto Zago Filho Ana Tereza Ramos Moreira Osvaldo Malafaia Jorge Eduardo Fouto Matias

Purpose: Describe the outcomes of thermal laser photocoagulation in three cases of retinal pigment epithelium detachment associated to age-related macular degeneration. Methods: Three patients with avascular retinal pigment epithelium detachment were treated with green diode laser photocoagulation. Mild macular grid laser application, similar to the treatment of diabetic macular edema was perfo...

A Mahmoodzadeh F Pakniyat H Mozdarani H. A Nedaie M Salimi S Gholami

Introduction: Radiation-induced bystander effect (RIBE) is a well-known response associated with the induction of radiation effects in non-irradiated cells via signaling of hit ones. As this so-called phenomenon has been largely investigated in low dose levels, few studies focused on higher dose levels such as grid therapy. Grid therapy or spatially fractionated gri...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده علوم 1390

any change in the refractive index of a laser active medium can lead to serious degradation of beam quality, laser beam modes, laser performance and variation in the intensity distribution. alteration in the refractive index of laser active medium is especially notable in high power lasers. it is clear that in the laser beam production, the pumping agent induces a great amount of heat which...

Journal: :محیط زیست طبیعی 0
حسن پوربابایی گروه جنگلداری، دانشکده منابع طبیعی، دانشگاه گیلان، صومعه سرا شیوا زندی ناوگران گروه جنگلداری، دانشکده منابع طبیعی، دانشگاه گیلان، صومعه سرا محمد نقی عادل گروه جنگلداری، دانشکده منابع طبیعی، دانشگاه گیلان، صومعه سرا

spatial pattern of trees is an important characteristic of plant communities. generating hypotheses relating to the structure of ecological communities is the aim of spatial pattern recognition. stands spatial patterns are measured and mapped by measuring tree locations in the stand and entering each coordinates into analytical frameworks. the spatial pattern of plant populations observed at an...

A.S. Meigooni, H. Zhang, K. Komanduri, M. Mohiuddin, N. J. Meigooni, S.A. Dini, U. Malik,

Background: An effective method for management of large and bulky malignant tumors. This treatment modality is also known as Specially Fractionated Radiation Therapy (SFRT). In this treatment technique a grid block converted the open radiation field into a series of pencil beams. Dosimetric characteristics of an external beam grid radiation field have been investigated using experimental and Mo...

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