scholarly journals Gurvitis syndrome: the dark shade of hematemesis

Endoscopy ◽  
2019 ◽  
Vol 52 (05) ◽  
pp. E181-E182
Author(s):  
Cătălina Diaconu ◽  
Mihai Ciocîrlan ◽  
Mădălina Ilie ◽  
Vasile Sandru ◽  
Daniel Vasile Balaban ◽  
...  
Keyword(s):  
Dark Shade

scholarly journals Influence of shade and irradiation time on the hardness of composite resins

2007 ◽  
Vol 18 (3) ◽  
pp. 231-234 ◽  
Author(s):  
Álvaro Della Bona ◽  
Vinícius Rosa ◽  
Dileta Cecchetti
Keyword(s):  
Composite Resin ◽  
Irradiation Time ◽  
Composite Resins ◽  
Light Irradiation ◽  
Hardness Tester ◽  
Different Depths ◽  
Study Hypothesis ◽  
Dark Shade

This study tested the following hypotheses: 1. increasing light irradiation time (IT) produces greater values of superficial hardness on different depths (0 and 3 mm); and 2. a dark shade composite (A3) needs longer IT than a light shade composite (A1) to produce similar hardness. Disk-shaped specimens (n=24 per shade) were fabricated using a 3-mm-thick increment of composite resin (Z100). Specimens were randomly assigned to 3 groups (n=8) according to the IT (400 mW/cm2) at the upper (U) surface: A1-10 and A3-10: 10 s; A1-20 and A3-20: 20 s; A1-40 and A3-40: 40 s. Specimens were stored in black lightproof containers at 37ºC for 24 h before indentation in a hardness tester. Three Vickers indentations were performed on the U and lower (L) surfaces of each specimen. The indent diagonals were measured and the hardness value calculated. The results were analyzed statistically by ANOVA and Tukey's test (alpha=0.05). Statistically significant differences were found between U and L surfaces of each composite shade-IT combination (p=0.0001) and among the ITs of same shade-surface combination (p=0.0001), except between groups A1-20U and A1-40U, confirming the study hypothesis 1 and partially rejecting the hypothesis 2.

scholarly journals Physicochemical Characteristics of Saudi Arabian Locally Produced Raw and Diluted Honeys and Their Relations to Antimicrobial Activity

2014 ◽  
Vol 10 (6) ◽  
pp. 2766-2774
Author(s):  
Mohammad S El-Shahawi ◽  
R. Al-Hindi
Keyword(s):  
Antimicrobial Activity ◽  
Active Oxygen Species ◽  
Physicochemical Characteristics ◽  
Active Oxygen ◽  
Oxygen Species ◽  
Inhibitory Effects ◽  
Excellent Correlation ◽  
Light Amber ◽  
First Time ◽  
Dark Shade

The physicochemical characteristics and antibacterial activity of Saudi Arabia honeys were studied for the first time. The levels of free and total acidity, pH, ash and moisture content were in the range 1.6 ±0.17 - 15.1 ±0.1 meq/kg, 2.77 ± 0.06 - 5.37 ±0.04, 1.1 ±0.02 – 1.7 ±0.03 % and < 18.0 %, respectively. Lovibond comparator color scale (P, mm) of samples was ranged from water white (P=0.0-1.3), extra light Amber (P=38.14-46.57), light Amber (P=60.39-75.54), Amber (P=86.72-110.08), dark (P=142.39-348.44) and very dark shade (P= 541.84).  Dark honeys showed excellent inhibitory effects against bacterial growth. Excellent correlation between color of raw and diluted (>10.0%m/v) honey and antimicrobial activity was noticed. Honey species from different floral sources posses’ strong antioxidant and anti bacterial activities and are scavengers of active oxygen species. 

Sources of variation in fibre diameter attributes of Australian alpacas and implications for fleece evaluation and animal selection

2004 ◽  
Vol 55 (4) ◽  
pp. 433 ◽  
Author(s):  
B. A. McGregor ◽  
K. L. Butler
Keyword(s):  
Regression Analysis ◽  
Potential Benefit ◽  
Fibre Diameter ◽  
Selection Efficiency ◽  
Sources Of Variation ◽  
The Mean ◽  
Using Data ◽  
Age Range ◽  
Dark Shade ◽  
Entire Male

Sources of variation in fibre diameter attributes of Australian alpacas and implications for fleece evaluation and animal selection were investigated using data collected in the years 1994–97, from 6 properties in southern Australia. Data were analysed using REML (multiple regression analysis) to determine the effect on mean fibre diameter (MFD) and coefficient of variation of MFD (CV(FD)) of age, origin (property), sex (entire male, female), breed (Huacaya, Suri), liveweight, fibre colour, individual, and interactions of these effects. The mean (n = 100) age (range) was 4.2 years (0.1–11.9), liveweight 72.0 kg (12.0–134 kg), MFD 29.1 μm (17.7–46.6 μm), CV(FD) 24.33% (15.0–36.7%). A number of variables affected MFD and CV(FD). MFD increased to 7.5 years of age, and correlations between MFD at 1.5 and 2 years of age with the MFD at older ages were much higher than correlations at younger ages. Fibre diameter 'blowout' (increase with age) was positively correlated with the actual MFD at ages 2 years and older. There were important effects of farm, and these effects differed with year and shearing age. Suris were coarser than Huacayas with the effect reducing with increased liveweight; there was no effect of sex. Fleeces of light shade were 1 μm finer than dark fleeces. CV(FD) declined rapidly between birth and 2 years of age, reaching a minimum at about 4 years of age and then increasing; however, CV(FD) measurements on young animals were very poor predictors of CV(FD) at older ages, and the response of CV(FD) to age differed with farm and year. Suris had a higher CV(FD) than Huacayas on most properties, and MFD, liveweight, and sex did not affect CV(FD). Fleeces of dark shade had higher CV(FD) than fleeces of light shade in 2 of the years. It is concluded that there are large opportunities to improve the MFD and CV(FD) of alpaca fibre through selection and breeding. The potential benefit is greatest from reducing the MFD and CV(FD) of fibre from older alpacas, through reducing the between-animal variation in MFD and CV(FD). Sampling alpacas at ages <2 years is likely to substantially decrease selection efficiency for lifetime fibre diameter attributes.

scholarly journals Impact of Washing Process on the Physical Properties of Denim Fabric (Twill and Dobby)

2021 ◽  
Vol 6 (7) ◽  
pp. 77-81
Author(s):  
Abdullah Al Rakib Shikder ◽  
Jabed Hossen Emon ◽  
Md. Humayun Kabir Khan ◽  
Md. Mehedi Hasan ◽  
Md. Abu Bakar Siddiquee
Keyword(s):  
Tensile Strength ◽  
The Other ◽  
Polyester Yarn ◽  
Weft Direction ◽  
Washing Process ◽  
Different Types ◽  
Denim Fabric ◽  
The Impact ◽  
Dark Shade ◽  
Tearing Strength

The study was focused on investigating the impact of different washing processes (dark shade, medium shade, light shade) on various properties of denim fabric. Two different types of fabrics with twill and dobby weave constructions were produced from cotton, spandex, and polyester yarn, and different types of washing processes were applied. Dimensional stability, tensile strength, tearing strength, EPI and PPI, weight, colorfastness to rubbing, colorfastness to perspiration (acid and alkaline), and colorfastness to water was investigated and comparisons were made statistically between the before washed sample and after washed sample. It is found that the process result shows better tear and tensile strength in case of dark & medium shade wash than light shade wash. On the other hand, weight and EPI & PPI have shown better result for light wash than other wash. Colorfastness to rubbing, Colorfastness to water, and Colorfastness to perspiration (acid and alkaline medium) are similar. The shrinkage% is higher especially in the weft direction of the fabric for light wash than the dark wash.

scholarly journals (294) The Effect of Heavy Metal Cadmium on Transgenic and Nontransgenic Petunia Plants

HortScience ◽  
2006 ◽  
Vol 41 (4) ◽  
pp. 1078D-1079
Author(s):  
Pranitha Patil ◽  
Sung Park
Keyword(s):  
Heavy Metal ◽  
Transgenic Plants ◽  
Heavy Metal Contamination ◽  
Survival Rates ◽  
Growth And Survival ◽  
Green Color ◽  
Heavy Metal Transport ◽  
Similar Growth ◽  
Dark Shade ◽  
Better Than

Heavy metal contamination in the ground and its effects on human health has been a major concern. The objective of this experiment is to determine how cadmium affects transgenic and nontransgenic (control) petunia plants. Initially, the petunia seed germination medium (SGM) was prepared, and petunia seeds were sterilized and cultured on the SGM medium. During the actual experiment, using 8-day-old germinated petunia, the SGM-Cd media containing four different concentrations (0, 50, 100, and 200 μM) of CdCl2 were prepared. Plant growth and survival rates in four concentrations of SGM-Cd media were recorded. Over 20 days of observations, the plants showed two distinct differences: color and growth. For the first few days, all of the plants grew very slowly, but the plants showed marked differences in growth and color at later days. On the final day, 22 Jan., the control plants on 0 μM of CdCl2 grew 4.2 cm, while the transgenic plant grew 2.4 cm and showed a dark shade of green color. The control plants on 50 μM grew 1.38 cm, while the transgenic plants grew 2.2 cm. The control plants on 100 μM grew 1.14 cm, while the transgenic plants grew a total of 1.7 cm. Both control and transgenic plants on 200 μM had similar growth of 0.94 cm and showed very light shade of green color. The hypothesis in this experiment was confirmed because CdCl2 impacted the growth of the control and transgenic plants by stunting the growth of the plant and changing its color. It is also demonstrated here that transgenic plants containing the heavy metal transport (HMT) gene can grow better than control because of the specific HMT gene that allowed the plant to uptake more CdCl2 into the central vacuole.

Assessment of Colour Differences in Silicone Hand and Digit Prostheses: Perceptible and Acceptable Thresholds for Fair and Dark Skin Shades

2006 ◽  
Vol 30 (1) ◽  
pp. 5-16 ◽  
Author(s):  
Michael E. L. Leow ◽  
Richard K. K. Ow ◽  
Man Hang Lee ◽  
Chan Yiong Huak ◽  
Robert W. H. Pho
Keyword(s):  
Colour Vision ◽  
Social Acceptance ◽  
Human Subjects ◽  
Visual Assessment ◽  
Threshold Values ◽  
Colour Difference ◽  
Colorimetric Measurements ◽  
Colour Match ◽  
Normal Colour ◽  
Dark Shade

This study addresses the dilemma of initial clinical and social acceptance of a newly fabricated silicone prosthesis in relation to its colour match to the natural skin. This was achieved by derivation of specific colour difference thresholds defining perceptible and acceptable levels of colour sensitivity. Two separate sets of 10 fair and dark shade digit prosthesis samples were each fabricated with a stepped increase in colour difference (Δ E) against the baseline hand prosthesis. Ninety individuals with normal colour vision scores were selected as colour assessors. The colour difference of each prosthesis in the two series was evaluated visually against the baseline by the assessors, using defined scores. The thresholds for perceptible and acceptable colour difference determined in this study were Δ E = 0.8 and Δ E = 1.8 for the fair series and Δ E = 1.3 and Δ E = 2.6 for the dark series, respectively. The acceptable threshold values differed from the perceptible threshold values by Δ E = 1.0 for the fair-shade samples and Δ E = 1.3 for the dark-shade samples. This study demonstrated that subjective visual assessment is positively correlated with Δ E values computed from colorimetric measurements for both fair and dark-shade silicone samples (p<0.001). This results shows that human subjects with normal colour vision are capable of accurately assessing colour differences. These observations emphasize the importance of subjective feedback on colour by the patient, provided the latter has perfect colour-tested vision. The study also showed that human subjects were less sensitive to perceived colour differences in darker-shade than fairer-shade samples (p<0.001). This finding seems relevant in a clinical setting involving a multi-ethnic patient population.

The dark shade of the moon

2005 ◽  
Vol 33 (6) ◽  
pp. 574-574 ◽  
Author(s):  
Paola Bressan
Keyword(s):  
The Moon ◽  
Dark Shade

scholarly journals Effect of Light-Emitting Diodes and Ultraviolet Irradiation on the Soluble Sugar, Organic Acid, and Carotenoid Content of Postharvest Sweet Oranges (Citrus sinensis (L.) Osbeck)

Molecules ◽  
2019 ◽  
Vol 24 (19) ◽  
pp. 3440 ◽  
Author(s):  
Linping Hu ◽  
Can Yang ◽  
Lina Zhang ◽  
Jing Feng ◽  
Wanpeng Xi
Keyword(s):  
Organic Acid ◽  
Citrus Sinensis ◽  
Light Emitting Diodes ◽  
Soluble Sugar ◽  
Red Light ◽  
Carotenoid Content ◽  
Light Emitting ◽  
Total Soluble Sugar ◽  
Carotenoid Accumulation ◽  
Dark Shade

Mature ‘Hamlin’ sweet oranges (Citrus sinensis (L.) Osbeck) were irradiated using light-emitting diodes (LEDs) and ultraviolet (UV) light for six days after harvest. Based on evaluation of the basic ripening parameters of fruits, the contents of soluble sugars, organic acids, and carotenoids were analyzed (in pulps) on the sixth day by high-performance liquid chromatography (HPLC). The results showed that LED and UV irradiation not only accelerated orange ripening but also caused significant changes in the soluble sugar, organic acid, and carotenoid content. Compared with fruit subjected to dark shade (DS) treatment, the total soluble sugar, fructose, and glucose contents increased significantly in UV-treated (UVA, UVB, and UVC) fruits, while the sucrose content increased remarkably in white light, UVB, and UVC-treated fruits (p < 0.05). UV treatment was associated with inducing the largest effect on the total soluble sugar content. Except for UVB, other types of light notably induced an accumulation of the total organic acid content, none but blue light and red light markedly induced citric acid accumulation (p < 0.05). Interestingly, only the red light and dark shade treatments had markedly positive effects in terms of inducing carotenoid accumulation, including the total carotenoid, isolutein, zeaxanthin, lutein, neoxanthin, all-trans-violaxanthin, phytofluene, cis-ζ-carotene, and β-carotene concentrations. Other light treatments had significantly negative effects on carotenoid accumulation (p < 0.05). Therefore, soluble sugar, organic acid, and carotenoid accumulation in sweet oranges vary depending on the levels of UV and LED irradiation. Appropriate light irradiation is a potentially effective way to maintain or improve postharvest fruit quality.

A NEW NOCTUID OF THE GENUS CIRROPHANUS

1899 ◽  
Vol 31 (10) ◽  
pp. 288-288
Author(s):  
T. D. A. Cockerell
Keyword(s):  
Short Distance ◽  
Dark Line ◽  
Inferior Margin ◽  
Dark Shade ◽  
Line Crossing

Cirrophanus Dyari, n. sp. — ♀. Expanse 34 millim. General colour and markings just as in C. triangulifer, Grote, except as regards the following particulars: The general colour is more ochreous — not so orange; the t. p. line curves inwards to a point not far from the middle of the wing, whence it rapidly bends outwards for a short distance, after which it again bends downwards and inwards to the inferior margin; the s. t. line is further from the margin, and deeply shaded about the middle with ochreous; the oblique dark line from the lower part of the t. p. line to the costa is distinct, and has a sharp zigzag near its middle. It results from the direction of the t. p. line that the light patch at the anal angle is more extensive than in C. triangulifer, but it is broken by a dark shade representing the lower part of the s. t. line. Hind wings strongly suffused with gray, with a curved gray line crossing the middle. Thoracic tufts deep brownish-orange. On the under side the primaries, except their margins, are strongly shaded with blackish.

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