نتایج جستجو برای: color and light
تعداد نتایج: 16906414 فیلتر نتایج به سال:
BACKGROUND Blue light has more energy than longer wavelength light and can penetrate the eye to reach the retina. When surgeons use magnifying loupes under intensive surgical shadowless lamps for better view of the surgical field, the total luminance is about 200 times brighter than that of typical office lighting. In this study, the effects of 2 types of shadowless lamps were compared. Moreove...
Every year, during rose water extraction a huge amount of damask rose residue is produced. The transportation and disposal of these waste materials create some problems including an increase in the price of the produced rose water. In this study the use of damask rose residues in dyeing wool is assessed and a method for its use as a colorant in natural dyeing is offered. Dyeing was carrie...
Background and Objective: Nowadays, colors are widely used in various food industries, including sweets, confectionery, ice cream, beverages, and so on. Colors can have asthma-like complications, hyperactivity in children and cancers. Therefore, the aim of this study was to evaluate the direct mutagenic effect of several types of natural colors via Ames method. Materials and Methods: After pre...
The color stability of resin cements is essential for aesthetic restorations. Aim: To evaluate the influence of shade and aging time on the color stability of two light-cured and two dual-cured resin cements. Methods: The CIE-Lab color parameters (n=6) were measured immediately after sample preparation and at 7, 30 and 90 days of aging in distilled water. The color difference (∆E) was calculate...
Molecular Characterization of Iraqi Local Goat Breeds Using Random Amplified Polymorphic DNA Markers
Cashmere is only produced from Maraz (Kurdi) goat breed in Iraqi Kurdistan Region. The objective of this study was to assess the genetic diversity of different Maraz color types, black goat and Shami breeds using random amplified polymorphic DNA (RAPD) markers. Fourteen primers were used and nine out of them were selected based on their number of bands (NB) and polymorphic characteristics. Thes...
Introduction:Effluents contains dyes Because of the adverse health effects of Environmental and dangerous for public health. The aim of this study was to the use of a combination coagulation and flocculation process Coupled with photocatalytic degradation in dye 2- (methoxy carbonyl amino methyl) - acrylic acid methyl ester from Synthetic wastewater. Methods: In this study, the color removal w...
CMOS image sensor performance in ideal light conditions has been vastly improved over the years. However, for low light operation, there is much room for improvement. Monochrome sensors tend to dominate the field of low light imaging because their lack of color filters enhances their light collection. However, color is essential for proper object identification and target discrimination. Two ju...
The use of lightweight and cheap UAVs to detect the health of forests and identify the tension of planted can be useful to prevent the spread of pests and diseases. In the present research, a lightweight quadcopter drone with a 12-megapixel camera, visible light range was used. This UAV was emploied to detect leaf tension of pure Quercus Castanifolia plantation, pure Acer Velutinum and their mi...
the accumulation and composition of berry anthocyanin was measured in vitis vinifera l. cv. yatomi rosa using various light qualities provided by polyethylene films (red, orange, green, blue, and white). the anthocyanin has been enhanced significantly by blue light filter film and suppressed by red, orange, and green films compared to white film (control), which suggests that yatomi rosa has ad...
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