Artykuły w czasopismach: „Opaciteit”

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van der Waal, Isaäc. "EEN OPACITEIT IN DE ONDERKAAK". Tandartspraktijk 31, nr 12 (grudzień 2010): 20–21. http://dx.doi.org/10.1007/s12496-010-0268-z.

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Frejlich, M., i E. Capiau. "Iridociliaire cysten bij de hond: een overzicht van de belangrijkste aspecten omtrent diagnose, risico’s en behandeling". Vlaams Diergeneeskundig Tijdschrift 90, nr 2 (30.04.2021): 51–58. http://dx.doi.org/10.21825/vdt.v90i2.18821.

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Iridociliaire cysten komen regelmatig voor bij honden. Ze zijn afkomstig van het achterste gepigmenteerde epitheel van de iris of ontstaan vanuit het binnenste epitheel van het ciliaire lichaam. De cysten zweven meestal vrij rond in de voorste oogkamer of hangen vast aan de pupilrand. De golden retriever, de labrador-retriever alsook de Duitse dog zijn gepredisponeerd maar verschillende andere rassen kunnen ook aangetast worden. Grotere cysten kunnen leiden tot belemmering van het zicht en opaciteit van de cornea. Daarnaast vormen pigmentafzetting op het voorste lenskapsel, een onvolledige pupilreflex en glaucoom ook mogelijke risico’s. De diagnosestelling gebeurt meestal op basis van de klinische presentatie. Transilluminatie van de cysten met een fel licht is echter noodzakelijk om het onderscheid te maken met een oculaire gepigmenteerde tumor. In de meeste gevallen zijn iridociliaire cysten een toevalsbevinding en is er geen behandeling nodig. Bij enkele specifieke rassen, waaronder de golden retriever en Amerikaanse buldog, kunnen deze echter een ander uitzicht hebben met meer kans op ontsteking en ontwikkeling van glaucoom. Wanneer de cysten te groot worden, kunnen ze niet-invasief verwijderd worden via lasertherapie of chirurgisch via aspiratie met een naald of door irrigatie en aspiratie.

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Arslanagić, Amra, Nina Marković, Elmedin Bajrić i Lejla Burnazović Ristić. "Demarcated Opacities as Predictors of Progression of the Molar Incisor Hypomineralisation: a Pilot Study". Acta Stomatologica Croatica 54, nr 4 (15.12.2020): 420–30. http://dx.doi.org/10.15644/asc54/4/9.

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Objectives: Demarcated opacities (DO) on teeth affected by Molar Incisor Hypomineralisation (MIH) were observed to investigate if parameters of DO existence and the number of teeth affected could be used to predict the progression of disease. Material and methods: In 2009, the MIH prevalence was 11.5% (n=51) among 446 subjects in Sarajevo, aged from 6 to 9 years. In subjects with MIH who gave consent for further participation (n=25), the teeth with DO were observed after a 12-month period. Results: our sample included 29 permanent incisors and 14 first permanent molars with DO. The number of teeth with light opacities was significantly higher than the number of teeth with dark opacities. Opacities were more numerous on surfaces which were not exposed to masticatory pressure. The size of tooth surface affected by DO occurrence ranged from 1.33% to 56.56%. The number of affected teeth ranged from two to six. A strong positive correlation between MIH progression and dark colored opacities located on the occlusal/incisal surface of teeth was noted. Larger part of tooth surface was affected by hypomineralisation in the case of dark-colored opacities. The DO presence on incisors was more likely to be located on vestibular surfaces and on the first permanent molars on their occlusal surfaces. Conclusions: The color of DO occurrence was the best predictor for MIH progression both independently and in combination with the number of affected teeth. Location of DO occurrence was a good independent predictor for MIH progression. It is important to collect information about color and location of DO presence.

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Min, Michiel. "Dust Opacities". EPJ Web of Conferences 102 (2015): 00005. http://dx.doi.org/10.1051/epjconf/201510200005.

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WALDE, I. "Band opacities". Equine Veterinary Journal 15, S2 (10.06.2010): 32. http://dx.doi.org/10.1111/j.2042-3306.1983.tb04555.x.

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Mann, Howard. "Radiographic Opacities". Chest 126, nr 4 (październik 2004): 1388. http://dx.doi.org/10.1378/chest.126.4.1388.

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Diam, Georgie A. "Lenticular Opacities". Medical Decision Making 10, nr 2 (czerwiec 1990): 147. http://dx.doi.org/10.1177/0272989x9001000209.

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Rogers, F. J., i C. A. Iglesias. "OPAL Opacities". International Astronomical Union Colloquium 139 (1993): 221–30. http://dx.doi.org/10.1017/s0252921100117440.

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AbstractWe have continued to improve and update the OPAL opacity code. Addition of intermediate coupling has further increased the opacity over earlier LS coupling results. A ‘corresponding states’ method has been used to extend the tables in both X and Z. This has allowed the calculation and distribution of extensive opacity tables for several different sets of metal abundance.

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Rozsnyai, Balazs F. "Solar opacities". Journal of Quantitative Spectroscopy and Radiative Transfer 71, nr 2-6 (październik 2001): 655–63. http://dx.doi.org/10.1016/s0022-4073(01)00106-6.

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Cugell, David W., i David W. Kamp. "Radiographic Opacities". Chest 126, nr 4 (październik 2004): 1388. http://dx.doi.org/10.1016/s0012-3692(15)31334-9.

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Seaton, M. J. "Radiative Opacities". International Astronomical Union Colloquium 137 (1993): 222–35. http://dx.doi.org/10.1017/s0252921100017826.

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Seaton, M. J. "Atomic Opacities". International Astronomical Union Colloquium 146 (1994): 265–70. http://dx.doi.org/10.1017/s0252921100021382.

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LetIv(r, θ) be the intensity of radiation of frequencyv, at a distancerfrom the centre of a star and in a direction making an angleθto the outward normal. In a plane-parallel approximation the equation of radiative transfer iswhere𝛋vis the opacity andjvthe emissivity. The net outward flux of radiant energy isand the flux integrated over all frequencies is

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13

Kamp, I. "Background Opacities". EAS Publications Series 43 (2010): 151–57. http://dx.doi.org/10.1051/eas/1043011.

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Ram, Jagat, Savleen Kaur i Surbhi Khurana. "Frosted lens opacities". Indian Journal of Ophthalmology 68, nr 7 (2020): 1453. http://dx.doi.org/10.4103/ijo.ijo_2264_19.

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Marchiori, Edson, Bruno Hochhegger i Gláucia Zanetti. "Branching tubular opacities". Jornal Brasileiro de Pneumologia 46, nr 4 (2020): e20200198-e20200198. http://dx.doi.org/10.36416/1806-3756/e20200198.

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Cotran, Paul R., i Ann M. Bajart. "Congenital Corneal Opacities". International Ophthalmology Clinics 32, nr 1 (1992): 93–106. http://dx.doi.org/10.1097/00004397-199203210-00010.

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Blas, Zach. "Opacities: An Introduction". Camera Obscura: Feminism, Culture, and Media Studies 31, nr 2 92 (2016): 149–53. http://dx.doi.org/10.1215/02705346-3592499.

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Ferguson, Jason W., David R. Alexander, France Allard, Travis Barman, Julia G. Bodnarik, Peter H. Hauschildt, Amanda Heffner‐Wong i Akemi Tamanai. "Low‐Temperature Opacities". Astrophysical Journal 623, nr 1 (10.04.2005): 585–96. http://dx.doi.org/10.1086/428642.

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Johkoh, Takeshi, Nestor L. Müller, Kazuya Ichikado, Hironobu Nakamura, Harumi Itoh i Tomofumi Nagareda. "Perilobular Pulmonary Opacities". Journal of Thoracic Imaging 14, nr 3 (lipiec 1999): 172–77. http://dx.doi.org/10.1097/00005382-199907000-00003.

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Neuforge, C. "Low Temperature Opacities". International Astronomical Union Colloquium 147 (1994): 618–21. http://dx.doi.org/10.1017/s0252921100026713.

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AbstractThe importance of low temperature opacities in stellar calibrations led us to compute new sets of Rosseland mean opacities for different Z-values. For the solar metallicity, these tables have been compared to those of Alexander (1975), Cox (1983), Sharp (1991) and Kurucz (1992).

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21

Detterbeck, Frank C. "Clearing Up Opacities". Chest 145, nr 1 (styczeń 2014): 9–10. http://dx.doi.org/10.1378/chest.13-1765.

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Iglesias, Carlos A., i Forrest J. Rogers. "Updated Opal Opacities". Astrophysical Journal 464 (czerwiec 1996): 943. http://dx.doi.org/10.1086/177381.

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Neves, João A. Cunha, Maria Margarida Rosado i Marcelo Gordinho. "Bilateral hilar opacities". European Journal of Internal Medicine 81 (listopad 2020): 83–84. http://dx.doi.org/10.1016/j.ejim.2020.09.010.

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Schaible, Jan, Stefanie Meiler, Florian Poschenrieder, Gregor Scharf, Florian Zeman, Janine Rennert, Benedikt Pregler i in. "Sharp margin and geographic shape: systematic evaluation of two novel CT features in COVID-19 pneumonia". BJR|Open 2, nr 1 (listopad 2020): 20200026. http://dx.doi.org/10.1259/bjro.20200026.

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Objective: CT is important in the care of patients with COVID-19 pneumonia. However, specificity might be poor in the absence of a clinical and epidemiological context. The goal of this work was to systematically evaluate two novel CT features (sharp margin and geographic shape) of COVID-19 pneumonia. Methods: All patients with reverse transcription polymerase chain reaction proven COVID-19 pneumonia and chest CT between March first and April 15, 2020 were retrospectively identified from two tertiary care hospitals in Germany. The CTs were evaluated regarding the presence of typical CT signs (e.g. ground glass opacitiy, consolidation, crazy paving). Moreover, the shape of the opacifications (round, geographic, curvilinear) and their margin (unsharp, sharp) was determined. Results: The study population comprised 108 patients (64 male) with a mean age of 59.6 years. Ground glass opacities (96%) and consolidation (75%) were the most prevalent CT signs. Crazy paving was seen in 17%, bronchial dilatation in 21%, air bronchogram in 29%, vessel enlargement in 47%, cavitation in 0%, lymphadenopathy in 32%, pleural effusion in 16%. Round configuration of densities was present in 41% of CTs, geographic shape in 27% and curvilinear opacities in 44%. 79% of opacifications were at least partially sharply marginated. In almost all cases, the lung was affected bilaterally (94%). Conclusion: The CT pattern of COVID-19 pneumonia in a cohort from Germany was in accordance with prior studies. However, we identified two novel CT signs of COVID-19 pneumonia which have so far not been systematically evaluated. A sharp border and geographic shape of opacifications were frequently observed. Advances in knowledge: The newly described CT features “sharp margin” and “geographic shape” of opacifications in patients with COVID-19 pneumonia might help to increase specificity of CT.

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van der Meij, E. H. "How to detect opacities in the orofacial soft tissue on a panoramic radiograph? Idiopathic calcifications". Nederlands Tijdschrift voor Tandheelkunde 126, nr 04 (5.04.2019): 199–205. http://dx.doi.org/10.5177/ntvt.2019.04.19004.

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Khzardzhan, Y. Y., V. P. Fokin, A. S. Balalin i S. V. Balalin. "Optimized technology of YAG-laser vitreolysis of occurrence of the vitreous body". Fyodorov journal of ophthalmic surgery, nr 3 (8.10.2021): 55–64. http://dx.doi.org/10.25276/0235-4160-2021-3-55-64.

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Introduction. Vitreous opacities are quite common, occurring in 76% of cases and significantly reducing quality of life in 33% of them. YAG-laser vitreolysis is considered as an alternative treatment option for patients with floating vitreous opacities. Purpose. To develop an optimized YAG-laser vitreolysis technology based on the assessment of the acoustic density of the vitreous opacities. Material and methods. The results of YAG-laser vitreolysis of vitreous opacities in 318 patients (318 eyes) were analyzed. A photo-optical method has been developed for visualizing opacities of the vitreous body, registering the area of opacities and the dimming intensity index. A method has been developed for the personalized selection of laser energy taking into account the acoustic density of the vitreous opacities. Results. After performing multi-stage laser treatment, a significant decrease in the area of opacities and the dimming intensity index, an increase in the threshold of retinal photosensitivity according to microperimetry data and a decrease in the acoustic density of opacities were noted. Conclusions. Application of optimized YAG-laser vitreolysis technology for vitreous opacities allows to achieve the best values of clinical and functional parameters (p<0.05). Key words: vitreous body opacities, photo-optical method, efficiency of YAG-laser vitreolysis

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Seaton, M. J., Y. Yan, D. Mihalas i A. K. Pradhan. "Opacities for stellar envelopes". Monthly Notices of the Royal Astronomical Society 266, nr 4 (15.02.1994): 805–28. http://dx.doi.org/10.1093/mnras/266.4.805.

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Alexander, D. R., i J. W. Ferguson. "Low-temperature Rosseland opacities". Astrophysical Journal 437 (grudzień 1994): 879. http://dx.doi.org/10.1086/175039.

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Bernath, Peter F. "Molecular opacities for exoplanets". Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 372, nr 2014 (28.04.2014): 20130087. http://dx.doi.org/10.1098/rsta.2013.0087.

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Spectroscopic observations of exoplanets are now possible by transit methods and direct emission. Spectroscopic requirements for exoplanets are reviewed based on existing measurements and model predictions for hot Jupiters and super-Earths. Molecular opacities needed to simulate astronomical observations can be obtained from laboratory measurements, ab initio calculations or a combination of the two approaches. This discussion article focuses mainly on laboratory measurements of hot molecules as needed for exoplanet spectroscopy.

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Ferguson, Jason W., i Aaron Dotter. "Changing Abundances, Changing Opacities". Proceedings of the International Astronomical Union 4, S252 (kwiecień 2008): 1–11. http://dx.doi.org/10.1017/s1743921308022333.

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AbstractWith ever changing solar abundances being reported the equation of state and opacities needed for stellar evolution models also change. A discussion of those changes in mean molecular opacities will be presented with a discussion on the effect on evolution models. Aside from changing the abundances of the base mixture the enrichment changes too. Traditionally mean opacity tables are produced for oxygen-rich mixtures, however stars will often become carbon-rich. A discussion of carbon-rich opacities tables will also be presented.

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Iglesias, Carlos A., i Forrest J. Rogers. "Astrophysical Opacities at LLNL". International Astronomical Union Colloquium 121 (1990): 81–90. http://dx.doi.org/10.1017/s025292110006783x.

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AbstractIn an effort to reduce uncertainties in the theoretical radiative opacities a new code has been developed at LLNL which removes several of the approximation present in past calculations. Results from the new code with comparisons to other available opacity calculations are presented as well as experiments.

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Wirbelauer, Christopher. "OCT of Corneal Opacities". Ophthalmology 115, nr 3 (marzec 2008): 589–90. http://dx.doi.org/10.1016/j.ophtha.2007.08.026.

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Hennis, Anselm, Suh-Yuh Wu, Xiaowei Li, Barbara Nemesure i M. Cristina Leske. "Lens opacities and mortality". Ophthalmology 108, nr 3 (marzec 2001): 498–504. http://dx.doi.org/10.1016/s0161-6420(00)00542-x.

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Morgan, K. S., i R. W. Beuerman. "Interface Opacities in Epikeratophakia". Archives of Ophthalmology 104, nr 10 (1.10.1986): 1505–8. http://dx.doi.org/10.1001/archopht.1986.01050220099036.

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Chylack, L. T., M. C. Leske, R. Sperduto, P. Khu i D. McCarthy. "Lens Opacities Classification System". Archives of Ophthalmology 106, nr 3 (1.03.1988): 330–34. http://dx.doi.org/10.1001/archopht.1988.01060130356020.

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Alecian, Georges, i Morgan Deal. "Opacities and Atomic Diffusion". Galaxies 11, nr 3 (25.04.2023): 62. http://dx.doi.org/10.3390/galaxies11030062.

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Opacity is a fundamental quantity for stellar modeling, and it plays an essential role throughout the life of stars. After gravity drives the collapse of interstellar matter into a protostar, the opacity determines how this matter is structured around the stellar core. The opacity explains how the radiation field interacts with the matter and how a major part of the energy flows through the star. It results from all the microscopic interactions of photons with atoms. Part of the momentum exchange between photons and atoms gives rise to radiative accelerations (specific to each type of atom), which are strongly involved in a second-order process: atomic diffusion. Although this process is a slow one, it can have a significant impact on stellar structure and chemical composition measurements. In this review, we discuss the way opacities are presently computed and used in numerical codes. Atomic diffusion is described, and the current status of the consideration of this process is presented.

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Garcia-Aguirre, Gerardo, Andree Henaine-Berra i Guillermo Salcedo-Villanueva. "Visualization and Grading of Vitreous Floaters Using Dynamic Ultra-Widefield Infrared Confocal Scanning Laser Ophthalmoscopy: A Pilot Study". Journal of Clinical Medicine 11, nr 19 (20.09.2022): 5502. http://dx.doi.org/10.3390/jcm11195502.

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Purpose: To describe the appearance of vitreous opacities using dynamic ultra-widefield infrared confocal scanning laser ophthalmoscopy (IRcSLO). Design: Retrospective case series. Methods: Eyes of patients complaining of myodesopsia were analyzed using dynamic ultra-widefield IRcSLO imaging (Nidek Mirante, Nidek Co., Ltd., Gamagori, Japan), and classified according to a vitreous opacity severity scale. Results: Thirty eyes of 21 patients were included in this study. The average age was 56 years. Symptom duration ranged from 1 to more than 365 days. The most common cause of vitreous floaters was posterior vitreous detachment (63.3%), followed by vitreous syneresis (23.3%), asteroid hyalosis (10%) and vitreous hemorrhage (3.3%). Opacities were classified as Grade 1 in three eyes (10%), Grade 2 in 10 eyes (33.3%), Grade 3 in 11 eyes (36.6%), Grade 4 in two eyes (6.6%) and Grade 5 in four eyes (13.3%). Patients with Grade 1 opacities were younger than patients with opacities Grade 2 or greater. A visible Weiss ring could be identified in 0% of eyes with Grade 1 opacities, 40% of eyes with Grade 2 opacities, 100% of eyes with Grade 3 opacities, and 100% of eyes with Grade 4 opacities. In patients with Grade 5 opacities, a Weiss ring could not be identified. Conclusion: Dynamic ultra-widefield IRcSLO imaging is a useful tool to evaluate patients with vitreous floaters. It allows for accurate visualization of the number, density, and behavior of the shadows that vitreous opacities project over a very wide area of the retina, which has a positive correlation with patient perception of floaters.

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Tominna, Marie, i Sayf Al-Katib. "Mass-Like Ground-Glass Opacities in Sarcoidosis: A Rare Presentation Not Previously Described". Case Reports in Radiology 2018 (14.08.2018): 1–4. http://dx.doi.org/10.1155/2018/5686915.

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Various typical and atypical imaging findings for pulmonary sarcoidosis have been described in the literature. Ground-glass opacities are one of the atypical manifestations, reported as diffuse or patchy ill-defined opacities frequently associated with additional findings and interstitial nodules. We performed a literature review to determine if our case had previously been described. The literature describes cases of mass-like consolidations, but there are no reports of mass-like ground-glass opacities. The appearance of the ground-glass opacities in our case is unique, appearing as discrete well-defined mass-like ground-glass opacities in a peribronchovascular distribution without additional parenchymal findings typically seen in sarcoidosis.

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Hall, Noemi B., David J. Blackley, Cara N. Halldin i A. Scott Laney. "Continued increase in prevalence of r-type opacities among underground coal miners in the USA". Occupational and Environmental Medicine 76, nr 7 (25.04.2019): 479–81. http://dx.doi.org/10.1136/oemed-2019-105691.

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IntroductionRespirable crystalline silica exposure has been implicated in the resurgence of coal workers’ pneumoconiosis (CWP) in the USA. A 2010 report found an increasing prevalence of r-type opacities, which are associated with silicosis lung pathology, on the radiographs of working underground coal miners in central Appalachia. This analysis updates that report by assessing the prevalence of r-type opacities during 2010–2018 compared with earlier decades.MethodsData from the Coal Workers’ Health Surveillance Program were used to calculate the prevalence of r-type opacities on radiographs of working underground coal miners. The data were restricted to radiographs taken during 1 January 1980 to 15 September 2018. The presence of r-type opacities was defined as an r-type classification for either the primary or secondary shape/size of small opacities. Prevalence ratios for r-type opacities were calculated using log binomial regression.ResultsRadiograph classifications for 106 506 miners were included in analysis. For the USA overall, the prevalence of r-type opacities among miners with radiographs taken during 2010–2018 compared with 1980–1989 has increased (PR 2.4; 95% CI 1.9 to 3.0). For central Appalachia, the proportion of r-type opacities observed increased when comparing 1980–1989 to 2010–2018 (PR 6.0; 95% CI 4.6 to 7.9).ConclusionsThe prevalence of r-type opacities on the radiographs of Appalachian underground coal miners continues to increase, implicating exposure to crystalline silica in respirable coal mine dust. The current findings underscore the importance of monitoring and controlling exposure to silica in coal mines.

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Solahuddin, Alie, Theodorus Theodorus i Dian Ariani. "THE RELATIONSHIP BETWEEN LENS OPACITIES AND COLOR DISCRIMINATION ABILITY IN CATARACT PATIENTS". Asian Journal of Pharmaceutical and Clinical Research 11, nr 2 (1.02.2018): 359. http://dx.doi.org/10.22159/ajpcr.2018.v11i2.22384.

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Objective: To determine the relationship between lens opacities and color discrimination ability in cataract patients at the Special Eye Hospital in Palembang.Methods: A case study was undertaken in January to March 2017 at the Special Eye Hospital in Palembang. There were 80 cataract patients who met the inclusion and exclusion criteria. The relationship between lens opacities and color discrimination ability was analyzed using Spearman rho correlation test using SPSS version 18.0.Results: About 51.2% out of 80 cataract patients, most patients were diagnosed with nucleotide cataract with the majority degree of opacities is Grade III (50%). Average of total error score was 51.425±51, 441 (range 0-312). The correlation test results showed a significant weak positive correlation between lens opacities and color discrimination ability (r=0.376; p=0.001; n=80) where the percentage of effect of lens opacities to color discrimination ability was only 7.9% (R2=0.079).Conclusion: There was a significant weak positive correlation between lens opacities and color discrimination ability.

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Ball, Warrick H. "Main-sequence oscillators as a test of stellar opacities". Proceedings of the International Astronomical Union 11, A29B (sierpień 2015): 653–60. http://dx.doi.org/10.1017/s1743921316006268.

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AbstractThe last decade has given rise to several tensions between calculated and (sometimes indirectly) measured stellar opacities. I discuss the current and future capacity for the asteroseismology of B-type oscillators (slowly-pulsating B-type stars and β Cepheids) and main-sequence solar-like oscillators to test stellar opacities. I briefly highlight two methods by which the B-type oscillators already constrain opacities, though they do not yet identify a superior set of tables. I then consider how the main-sequence solar-like oscillators might also test opacities, using the 16 Cygni system as an example. There are currently greater uncertainties than the opacities (in this example, the atmospheric structure) but many of these will be separately constrained in the near future.

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Matthews, Andrew G. "Lens opacities in the horse: a clinical classification". Veterinary Ophthalmology 3, nr 2-3 (czerwiec 2000): 65–71. http://dx.doi.org/10.1046/j.1463-5224.2000.3230065.x.

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AbstractLens opacities, including cataracts, are frequent findings during routine ophthalmic examination in the horse, and clinicians often experience difficulty in predicting the potential progression and consequences on visual function of these opacities. This has particular relevance to the prepurchase examination. The present study proposes a descriptive classification of the more common lens opacities observed in the horse based principally on their morphological origin. This classification provides a basis for objective prediction of the probable progression of lens opacities, in particular cataracts, in the horse.

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Guzik, Joyce A., C. J. Fontes, P. Walczak, S. R. Wood, K. Mussack i E. Farag. "Sound speed and oscillation frequencies for solar models evolved with Los Alamos ATOMIC opacities". Proceedings of the International Astronomical Union 11, A29B (sierpień 2015): 532–35. http://dx.doi.org/10.1017/s1743921316006062.

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AbstractLos Alamos National Laboratory has calculated a new generation of radiative opacities (OPLIB data using the ATOMIC code) for elements with atomic number Z = 1-30 with improved physics input, updated atomic data, and finer temperature grid to replace the Los Alamos LEDCOP opacities released in the year 2000. We calculate the evolution of standard solar models including these new opacities, and compare with models evolved using the Lawrence Livermore National Laboratory OPAL opacities (Iglesias & Rogers 1996). We use the solar abundance mixture of Asplund et al. 2009. The Los Alamos ATOMIC opacities (Colgan et al. 2013a, 2013b, 2015) have steeper opacity derivatives than those of OPAL for temperatures and densities of the solar interior radiative zone. We compare the calculated nonadiabatic solar oscillation frequencies and solar interior sound speed to observed frequencies and helioseismic inferences. The calculated sound-speed profiles are similar for models evolved using either the updated Iben evolution code (see Guzik & Mussack 2010), or the MESA evolution code (Paxton et al. 2015). The LANL ATOMIC opacities partially mitigate the ‘solar abundance problem’.

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44

Kampmann, Jan, Nina Pirschel Hansen, Anders Nikolai Ørsted Schultz, Andreas Hjelm Brandt i Frans Brandt. "Lanthanum Carbonate Opacities—A Systematic Review". Diagnostics 12, nr 2 (11.02.2022): 464. http://dx.doi.org/10.3390/diagnostics12020464.

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Background: Lanthanum carbonate is a phosphate binder used in advanced kidney disease. Its radiopaque appearance has been described in many case studies and case series. Misinterpretation of this phenomenon leads to unnecessary diagnostic tests and procedures. The objectives of this study were to summarize the literature on lanthanum carbonate opacities and present a visual overview. Methods: A systematic search was conducted using MEDLINE, Embase, and Web of Science. We included all types of studies, including case reports/studies, describing radiological findings of lanthanum carbonate opacities in patients with chronic kidney disease. No filter for time was set. Results: A total of 36 articles were eligible for data extraction, and 33 articles were included in the narrative synthesis. Lanthanum carbonate opacities were most commonly reported in the intestines (26 studies, 73%), stomach (8 studies, 21%), and the aerodigestive tract (2 studies, 6%). The opacities in the intestine were most frequently described as multiple, scattered radiopaque densities, compared with the aerodigestive tract, where the opacities were described as a single, round foreign body. Suspicion of contrast medium or foreign bodies was the most common differential diagnosis. LC opacities in patients with CKD are commonly misinterpreted as foreign bodies or suspect contrast media. Conclusions: CKD patients treated with LC may have opacities throughout the digestive tract that can vary in appearance. Stopping LC treatment or changing to an alternative phosphate binder prior to planned image studies can avoid diagnostic confusion. If this is not an option, knowledge of the presentation of LC opacities is important.

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Khitri, Monica R. "Corneal Opacities in the Neonate". NeoReviews 19, nr 5 (maj 2018): e269-e276. http://dx.doi.org/10.1542/neo.19-5-e269.

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Voloudaki, A. E., D. E. Bouros, M. E. Froudarakis, G. E. Datseris, E. G. Apostolaki i Nickolas C. Gourtsoyiannis. "Crescentic and Ring-Shaped Opacities". Acta Radiologica 37, nr 6 (styczeń 1996): 889–92. http://dx.doi.org/10.3109/02841859609175463.

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Thomas, Ravi, Andrew Braganza, Thomas George i André Mermoud. "Vitreous Opacities in Phacolytic Glaucoma". Ophthalmic Surgery, Lasers and Imaging Retina 27, nr 10 (październik 1996): 839–43. http://dx.doi.org/10.3928/1542-8877-19961001-05.

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48

Adamyuk, V. "Surgical treatment of vitreous opacities". Kazan medical journal 22, nr 2 (24.12.2020): 244–45. http://dx.doi.org/10.17816/kazmj52928.

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Bliedung (Dent. Med. Woch., 1925, No. 27) recommends instead of the proposed Zur Nedden suction of the vitreous body and its replacement, according to Elschnig, NaCl for a simple posterior sclerotomy.

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Mendoza, Claudio. "Computation of Atomic Astrophysical Opacities". Atoms 6, nr 2 (18.05.2018): 28. http://dx.doi.org/10.3390/atoms6020028.

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Sparacino, Nick, Allen Thomas, Jasminder W. Mand, Michael B. Gotway i Jeffrey L. Sparacino. "Extraparenchymal Opacities at Thoracic Imaging". Clinical Pulmonary Medicine 22, nr 3 (maj 2015): 151–53. http://dx.doi.org/10.1097/cpm.0000000000000104.

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