نتایج جستجو برای: ghost teeth

تعداد نتایج: 42839  

2004
Yangjian Cai

Abstract We present a theoretical study of ghost imaging by using blackbody radiation source. A Gaussian thin lens equation for the ghost imaging, which depends on both paths, is derived. The dependences of the visibility and quality of the image on the transverse size and temperature of the blackbody are studied. The main differences between the ghost imaging by using the blackbody radiation a...

Journal: :Optics express 2009
Yangjian Cai Qiang Lin Olga Korotkova

Based on the classical optical coherence theory, ghost imaging with twisted Gaussian Schell-model (GSM) beams is analyzed. It is found that the twist phase of the GSM beam has strong influence on ghost imaging. As the absolute value of the twist factor increases, the ghost image disappears gradually, but its visibility increases. This phenomenon is caused by the fact that the twist phase enhanc...

2017
Taofeng Shao Zhiming Gong Tianyi Su Wei Hao Chao Che

Diversity-oriented synthesis of the biologically intriguing imidazo[1,2-a]pyridine-fused isoquinoline systems from readily available starting materials was achieved through the Groebke-Blackburn-Bienaymé reaction followed by a gold-catalyzed cyclization strategy. The synthetic approach is characterized by mild reaction conditions and a broad substrate scope, allowing for the rapid construction ...

2017
Renato Piai Pereira Rodrigo Ravazzi Rogério Vieira Silva Eduardo Nunes João Milton Rocha Gusmão Paulo Sérgio Flores Campos

Gemination aka twinning and fusion, are rare occurrences in posterior mandibular teeth, often requiring endodontic and surgical treatment for functional, orthodontic or cosmetic reasons. The diagnosis and design of a precise treatment plan in cases involving double teeth are in most cases challenging. The purpose of this case report is to describe a successful multidisciplinary treatment protoc...

2012
Baoqing Sun Stephen S. Welsh Matthew P. Edgar Jeffrey H. Shapiro Miles J. Padgett

We present an experimental comparison between different iterative ghost imaging algorithms. Our experimental setup utilizes a spatial light modulator for generating known random light fields to illuminate a partially-transmissive object. We adapt the weighting factor used in the traditional ghost imaging algorithm to account for changes in the efficiency of the generated light field. We show th...

Journal: :Radical Teacher 2019

Journal: :Science 2010

Journal: :American Anthropologist 1943

Journal: :Nature 2007

Journal: :Writing From the World: Selections from the International Writing Program 1977-1983 1984

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید