Metamer Mismatch Volumes of Flat Grey

Metamer mismatching refers to the fact that two objects reflecting light causing identical colour signals (i.e., cone response or XYZ) under one illumination may reflect light causing nonidentical colour signals under a second illumination. As a consequence of metamer mismatching, two objects appearing the same under the first illuminant can be expected to appear different under the second illuminant. Metamers of the flat grey reflectance (i.e., 50% across the visible spectrum) are of particular interest since they show the potential seriousness of metamer mismatching. Metamer mismatching of flat grey is very significant for some lights and includes the possibility of 20 objects having the same colour signal as flat grey under red light dispersing into a whole hue circle under a neutral (“white”) light. Flat grey under LED illumination is also shown to have a significant metamer mismatch volume when the light is changed to D65

The Extent of Metamer Mismatching

Metamer mismatching refers to the fact that two objects reflecting light causing identical colour signals (i.e., cone response or XYZ) under one illunimation may reflect light causing non-identical colour signals under a second illumination_ As a consequence of metamer mismatching, two objects appearing the same under one illuminant can be expected to appear different under the second illunimant. To investigate the potential extent of metamer mismatching, we calculated the metamer mismatching effect for 20 Munsell papers and 8 pairs of illunimants (Logvinenko & Tokunaga, 20 11) using the recent method (Logvinenko, Funt, & Godau, 2012) of computing the exact metan2er mismatch volume boundary. The results show that metamer mismatching is very significant for some lights. In fact, metamer mismatching was found to be so significant that it can lead to the prediction of some paradoxical phenomena, such as the possibility of 20 objects having the same colour under a neutral ("white") light dispersing into a whole hue circle of colours under a red light, and vice versa

Estimating individual cone fundamentals from their color-matching functions

Estimation of individual spectral cone fundamentals from color-matching functions is a classical and longstanding problem in color science. In this paper we propose a novel method to carry out this estimation based on a linear optimization technique, employing an assumption of a priori knowledge of the retinal absorptance functions. The result is an estimation of the combined lenticular and macular filtration for an individual, along with the nine coefficients in the linear combination that relates their color-matching functions to their estimated spectral-cone fundamentals. We test the method on the individual Stiles and Burch color-matching functions and derive cone-fundamental estimations for different viewing fields and matching experiment repetition. We obtain cone-fundamental estimations that are remarkably similar to those available in the literature. This suggests that the method yields results that are close to the true fundamentals

GEMINGA: NEW OBSERVATIONS AT LOW RADIO FREQUENCIES

ABSTRACT. After nearly 10 years, we have succeeded to detect radio emission from Geminga more again. In this report we present new evidence for presence of radio emission from Geminga in the range 42-112 MHz. The observations were carried out on two sensitive transit radio telescopes We used three new digital receivers to detect the pulses and to obtain dynamic spectra.The examples of mean pulse profiles are presented. Exact value of the dispersion measure have been calculated using the simultaneous observations at three frequencies

Associations of changes in lipid metabolism parameters and the severity of COVID-19 infection in Novosibirsk residents

Aim. To study the associations of changes in lipid metabolism parameters and the severity of a coronavirus disease 2019 (COVID-19).Material and methods. This cross-sectional study included 270 patients aged 26-84 years (mean age, 53,09±13,22 years) who had COVID-19 within prior two months, which were divided into 3 groups: mild (1, n=128), moderate (2, n=128) and severe (3, n=14) COVID-19. Patients were assessed for body mass index (BMI), waist circumference (WC), hip circumference (HC), waist-to-hip ratio (WHR), total cholesterol, triglycerides (TG), high-density lipoprotein cholesterol (HDL-C), low-density lipoprotein cholesterol (LDL-C). In addition, atherogenic index of plasma (AIP) was calculated. Statistical processing was performed using the SPSS software package (version 13.0).Results. Patients with severe COVID-19 had significantly higher levels of TG and AIP compared with patients with moderate and mild course. BMI and WC were significantly higher in patients in groups 2 and 3 compared with patients in group 1. In women, BMI and AIP levels were significantly higher in the severe COVID-19 group compared to groups 1 and 2. HDL-C levels were lower in patients with severe COVID-19 compared to those with moderate disease. WHR was higher among men in group 3 compared with group 1.Conclusion. Patients with severe COVID-19 have higher BMI, WC, AIP, TG levels, and lower HD-C levels. The relative odds for severe COVID-19 are associated with increased WC, AIP, TG, and lower HDL-C

Application of Basophil Activation Test with Anthraxin for Laboratory ( <I>in vitro</I>) Diagnostics of Anthrax

Demonstrated is the possibility to use in vitro basophil activation test with anthraxin, with registration of the results by means of flow cytometry, for anthrax diagnostics. This approach seems promising as it provides quantitative assessment of sensitization of the organism and does not cause its additional allergization. The duration of the analysis is 1h. The test is suggested for application, as an express one, for early and retrospective laboratory diagnostics of anthrax, estimation of post-vaccinal immunity

Knot homology via derived categories of coherent sheaves II, sl(m) case

Using derived categories of equivariant coherent sheaves we construct a knot homology theory which categorifies the quantum sl(m) knot polynomial. Our knot homology naturally satisfies the categorified MOY relations and is conjecturally isomorphic to Khovanov-Rozansky homology. Our construction is motivated by the geometric Satake correspondence and is related to Manolescu's by homological mirror symmetry.Comment: 51 pages, 9 figure

Characterizing Patients with Recurrent Urinary Tract Infections in Vesicoureteral Reflux: A Pilot Study of the Urinary Proteome

Recurrent urinary tract infections (UTIs) pose a significant burden on the health care system. Underlying mechanisms predisposing children to UTIs and associated changes in the urinary proteome are not well understood. We aimed to investigate the urinary proteome of a subset of children who have vesicoureteral reflux (VUR) and recurrent UTIs because of their risk of developing infection-related renal damage. Improving diagnostic modalities to identify UTI risk factors would significantly alter the clinical management of children with VUR. We profiled the urinary proteomes of 22 VUR patients with low grade VUR (1-3 out of 5), a history of recurrent UTIs, and renal scarring, comparing them to those obtained from 22 age-matched controls. Urinary proteins were analyzed by mass spectrometry followed by protein quantitation based on spectral counting. Of the 2,551 proteins identified across both cohorts, 964 were robustly quantified, as defined by meeting criteria with spectral count (SC) \u3e /=2 in at least 7 patients in either VUR or control cohort based on optimization of signal-to-noise ratio. Eighty proteins had differential expression between the two cohorts, with 44 proteins significantly upregulated and 36 downregulated (q \u3c 0.075, |FC| \u3e 1.2). Urinary proteins involved in inflammation, acute phase response (APR), modulation of extracellular matrix (ECM), and carbohydrate metabolism were overrepresented among the study cohort

Detection of Five New RRATs at 111 MHz

Results of 111-MHz monitoring observations carried out on the Big Scanning Antenna of the Pushchino Radio Astronomy Observatory during September 1-28, 2015 are presented. Fifty-four pulsating sources were detected at declinations $-9^o < \delta < +42^o$. Forty-seven of these are known pulsars, five are new sources, and two are previously discovered transients. Estimates of the peak flux densities and dispersion measures are presented or all these sources.Comment: published in Astronomy Report, translated by Yandex translator with correction of scientific lexis, 8 pages, 2 figures, 3 table