Sir, Michelangelo Merisi was born in September 1571 in Caravaggio, near Milan and was always known by the name of his hometown. Caravaggio moved to Rome in the early 1590s. His paintings were characterized by their extreme realism and dramatic contrasts of light and shade. Several works were realized as religious works commissioned by important exponents of clergy (BBC, 2017). In this group of ...

Shade and traffic can reduce turfgrass coverage and playability on both golf courses and sports fields. Five cultivars of bermudagrass and seven cultivars of zoysiagrass were planted in the summer of 2007 and maintained under typical golf course fairway and sports field conditions. Plots were shaded continuously beginning spring 2008 with a 50% light reducing fabric. A second study was implemen...

Landscapes have been the main theme in Chinese painting for over one thousand years. Chinese ink painting is a form of nonphotorealistic rendering. Terrain is the major subject in Chinese landscape painting, and surface wrinkles are important in conveying the orientation of mountains and contributing to the atmosphere. Over the centuries, masters of Chinese landscape painting have developed var...

We analyze detailed bidding data from auctions of Treasury bills and notes conducted between July 2009 and October 2013. The U.S. Treasury uses a uniform price auction system, which we model building on the share auction model of Wilson (1979) and Kastl (2012). Our model takes into account informational asymmetries introduced by the primary dealership and indirect bidding system employed by the...

Tooth bleaching is becoming increasingly popular among patients and dentists since it is a relatively noninvasive approach for whitening and lightening teeth. Instruments and visual assessment with respect to commercial shade guides are currently used to evaluate tooth color. However, the association between these procedures is imprecise and the degree of color change after tooth bleaching is k...

In laboratory studies of Arabidopsis thaliana, plants shaded by neighboring vegetation (or subject to treatments mimicking shade) flower at a younger developmental stage, and sometimes earlier in time. We examined whether this shade avoidance response varies among and within natural populations of A. thaliana, and whether it corresponds to variable selection regimes at shaded and unshaded field...

AIM The aim of this study is to compare the color space of Vita Lumin shade guide (SG) with the natural teeth of the local population. MATERIALS AND METHODS A total of 100 maxillary central incisors (100 patients) were subjected to color measurement with a spectrocolorimeter. For each tooth, L*, a*, b* values were recorded. All the shade tabs of Vita Lumin SG were analyzed with a spectrocolor...

Objective. The objective was to compare the clinical efficacy of two different tooth bleaching protocols after 1 and 2 weeks of treatment with an over-the-counter paint-on gel containing 6% hydrogen peroxide. Material and methods. Sixteen volunteer patients (minimum shade A2 or darker on maxillary teeth) were selected to participate in this randomized, single-blind (examiner-blinded), single-ce...

The purpose of this study was to evaluate the fabrication of a complete denture using a CAD/CAM system. Cone beam CT was used to measure the complete denture and the artificial teeth. After a 3D complete denture image was structured using 3D CAD software, we factored out the artificial teeth and obtained a 3D denture base image. A machining center cut an acrylic resin block, and fabricated an a...