Articles de revues : « Black chrome »

1

Lee, Kil Dong, Won Chae Jung et Jong Heon Kim. « Thermal degradation of black chrome coatings ». Solar Energy Materials and Solar Cells 63, n^o 2 (juillet 2000) : 125–37. http://dx.doi.org/10.1016/s0927-0248(99)00164-6.

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Lee, Tai Kyu, Dong Hyung Kim et P. Chungmoo Auh. « Preparation of new black chrome solar selective coatings ». Korean Journal of Chemical Engineering 12, n^o 2 (avril 1995) : 207–12. http://dx.doi.org/10.1007/bf02705648.

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3

Song, Ying Hua, Yuan Gao et Mei Ye. « Kinetic Studies of Adsorption of Chrome Blue-Black by Modified Peanut Husk ». Applied Mechanics and Materials 71-78 (juillet 2011) : 2094–97. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.2094.

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Modified peanut husk was used as an adsorbent to remove chrome blue-black from its aqueous solution. Results of kinetic experiments demonstrated that the adsorption was effective and rapid.Three different kinetic models (i.e.,intraparticular diffusion model, Lagergren-first-order and second-order equations) were used to describe the adsorption mechanisms. The adsorption of chrome blue-black on modified peanut husk was not controlled by intraparticular diffusion. The kinetic adsorption data can be well simulated by the second-order equation and the adsorption might be rate-limiting controlled. The suitability of the adsorbent was tested by fitting the equilibrium data with Langmuir and Freundlich isotherms, which gave good fits with both isotherms.

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Neevel, Han. « Logwood Writing Inks : History, Production, Forensics, and Use ». Restaurator. International Journal for the Preservation of Library and Archival Material 42, n^o 4 (30 novembre 2021) : 169–91. http://dx.doi.org/10.1515/res-2021-0015.

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Abstract In the 16th century, the Spanish brought logwood from Mexico to Europe. Its extract was used for textile dyeing. The French introduced the logwood tree to Western Hispaniola, which became Haiti in 1804. Around 1880, Haiti exported most of its logwood to France. In 1847, Runge introduced the black chrome-logwood ink as an alternative for iron-gall ink, because the latter attacked the steel writing nibs. The most important constituents of logwood are hematoxylin and hematein. Due to the profitable import conditions from Haiti, chrome-logwood ink became the cheapest and most commonly used black writing ink in France. This could explain why Vincent van Gogh, during his French period, used it for writing and drawing and why most of the French postcards from the first half of the 20th century, studied in this publication, were written with chrome-logwood ink, while most of the Dutch postcards were written with an iron gall ink.

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Lee, Kil Dong. « Preparation and Characterization of Black Chrome Solar Selective Coatings ». Journal of the Korean Physical Society 51, n^o 1 (14 juillet 2007) : 135. http://dx.doi.org/10.3938/jkps.51.135.

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Smith, G. B., R. C. McPhedran et G. H. Derrick. « Surface structure and the optical properties of black chrome ». Applied Physics A Solids and Surfaces 36, n^o 4 (avril 1985) : 193–204. http://dx.doi.org/10.1007/bf00616552.

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Maryanti, Sayed Achmady,. « CELAH KEAMANAN KREDENSIAL WINDOWS PADA GOOGLE CHROME ». Jurnal Sains Riset 9, n^o 3 (15 septembre 2019) : 18–21. http://dx.doi.org/10.47647/jsr.v9i3.204.

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An attack that can leak authentication credentials on a Windows operating system by using the SMB file sharing protocol on a Windows operating system is an ever-present problem. It's been exploited in many ways, but the only solution found is limited to local area networks. Jonathan Brossard and Hormazd Billimoria recently presented one study involving internet attacks at the Black Hat security conference in 2015. However, no SMB-related attacks were published. In this paper, we will explain how an attack can cause Windows credential theft, which may affect the default configuration in Google Chrome browser.Key words— Kredensial Windows, Google Chrome, Vulnerability

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Kaneko, Mao, Masanori Hiratsuka, Ali Alanazi, Hideki Nakamori, Kazushige Namiki et Kenji Hirakuri. « Surface Reformation of Medical Devices with DLC Coating ». Materials 14, n^o 2 (14 janvier 2021) : 376. http://dx.doi.org/10.3390/ma14020376.

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We evaluated the adhesion, friction characteristics, durability against bodily acids, sterilization, cleaning, and anti-reflection performance of diamond-like carbon (DLC) coatings formed as a surface treatment of intracorporeal medical devices. The major coefficients of friction during intubation in a living body in all environments were lower with DLC coatings than with black chrome plating. DLC demonstrated an adhesion of approximately 24 N, which is eight times stronger than that of black chrome plating. DLC-coated samples also showed significant stability without being damaged during acid immersion and high-pressure steam sterilization, as suggested by the results of durability tests. In addition, the coatings remained unpeeled in a usage environment, and there was no change in the anti-reflection performance of the DLC coatings. In summary, DLC coatings are useful for improving intracorporeal device surfaces and extending the lives of medical devices.

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Holloway, P. H., K. Shanker, G. A. Alexander et Li De Sedas. « Oxidation and diffusion in black chrome selective solar absorber coatings ». Thin Solid Films 177, n^o 1-2 (octobre 1989) : 95–105. http://dx.doi.org/10.1016/0040-6090(89)90559-2.

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Erben, Edwin, Roland Bertinger, August Mühlratzer, B. Tihanyi et B. Cornils. « CVD black chrome coatings for high temperature photothermal energy conversion ». Solar Energy Materials 12, n^o 3 (juillet 1985) : 239–48. http://dx.doi.org/10.1016/0165-1633(85)90062-0.

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Pratesi, Stefano, Elisa Sani et Maurizio De Lucia. « Optical and Structural Characterization of Nickel Coatings for Solar Collector Receivers ». International Journal of Photoenergy 2014 (2014) : 1–7. http://dx.doi.org/10.1155/2014/834128.

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The development of spectrally selective materials is gaining an increasing role in solar thermal technology. The ideal spectrally selective solar absorber requires high absorbance at the solar spectrum wavelengths and low emittance at the wavelengths of thermal spectrum. Selective coating represents a promising route to improve the receiver efficiency for parabolic trough collectors (PTCs). In this work, we describe an intermediate step in the fabrication of black-chrome based solar absorbers, namely, the fabrication and characterization of nickel coatings on stainless steel substrates. Microstructural characteristics of nickel surfaces are known to favorably affect further black chrome deposition. Moreover, the high reflectivity of nickel in the thermal infrared wavelength region can be advantageously exploited for reducing thermal emission losses. Thus, this report investigates structural features and optical properties of the nickel surfaces, correlating them to coating thickness and deposition process, in the perspective to assess optimal conditions for solar absorber applications.

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Lee, Ji-Hyeon, Hae-Jin Hwang, Jin-Ho Kim, Kwang-Taek Hwang et Kyu-Sung Han. « Effect of Chrome Substitution on Coloration Characteristics of Black Ceramic Pigments ». Journal of the Korean Ceramic Society 51, n^o 5 (30 septembre 2014) : 505–10. http://dx.doi.org/10.4191/kcers.2014.51.5.505.

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Isayev, A. B., M. A. Aliyeva, A. Sh Shakhabudinov et A. Kh Idrisova. « Kinetics of the azodye chrome black-blue oxidation by Fenton process ». Herald of Dagestan State University 31, n^o 4 (2016) : 84–91. http://dx.doi.org/10.21779/2542-0321-2016-31-4-84-91.

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Smith, G. B., G. H. Derrick et R. C. McPhedran. « A rigorous diffraction theory for the optical properties of black chrome ». Applications of Surface Science 22-23 (mai 1985) : 813–19. http://dx.doi.org/10.1016/0378-5963(85)90214-4.

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15

Pérez Fernández, Irene. « El color de la voz : escritoras y pensadoras de la diáspora negra y asiática británica a finales del siglo XX ». Cuestiones de género : de la igualdad y la diferencia, n^o 12 (24 juin 2017) : 231. http://dx.doi.org/10.18002/cg.v0i12.4806.

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<p><strong>Resumen</strong></p><p>El feminismo británico negro se consolida a finales de los años 80 y está directamente vinculado a la lucha activista de mujeres inmigrantes, así como a la creación de grupos de escritura creativa. Este artículo traza una breve genealogía de escritoras británicas negras y asiáticas que utilizaron su voz para inscribir sus experiencias y reivindicar la necesidad de examinar las intersecciones entre las categorías de raza y género.</p><p><strong>Abstract</strong></p><p>The last years of the 80’s witnessed the consolidation of Black British and Asian British feminisms that have had their origins in the struggles and activism of Black and Asian women immigrants and the emergence of creative writing groups. This article draws a brief genealogy of Black and Asian British women writers who record their experiences and claim the need to re-examine the intersections between the categories of race and gender.</p><p> </p><div id="SLG_balloon_obj" style="display: block;"><div id="SLG_button" class="SLG_ImTranslatorLogo" style="background: url('chrome-extension://mchdgimobfnilobnllpdnompfjkkfdmi/content/img/util/imtranslator-s.png'); display: none; opacity: 0; transition: visibility 2s, opacity 2s linear;"> </div><div id="SLG_shadow_translation_result2" style="display: none;"> </div><div id="SLG_shadow_translator" style="display: none;"><div id="SLG_planshet" style="background: url('chrome-extension://mchdgimobfnilobnllpdnompfjkkfdmi/content/img/util/bg2.png') #f4f5f5;"><div id="SLG_arrow_up" style="background: url('chrome-extension://mchdgimobfnilobnllpdnompfjkkfdmi/content/img/util/up.png');"> </div><div id="SLG_providers" style="visibility: hidden;"><div id="SLG_P0" class="SLG_BL_LABLE_ON" title="Google">G</div><div id="SLG_P1" class="SLG_BL_LABLE_ON" title="Microsoft">M</div><div id="SLG_P2" class="SLG_BL_LABLE_ON" title="Translator">T</div></div><div id="SLG_alert_bbl" style="display: none;"> </div><div id="SLG_TB"><div id="SLG_bubblelogo" class="SLG_ImTranslatorLogo" style="background: url('chrome-extension://mchdgimobfnilobnllpdnompfjkkfdmi/content/img/util/imtranslator-s.png');"> </div><table id="SLG_tables" cellspacing="1"><tr><td class="SLG_td" align="right" width="10%"><input id="SLG_locer" title="Fijar idioma" type="checkbox" /></td><td class="SLG_td" align="left" width="20%"><select id="SLG_lng_from"><option value="auto">Detectar idioma</option><option value="">undefined</option></select></td><td class="SLG_td" align="center" width="3"> </td><td class="SLG_td" align="left" width="20%"><select id="SLG_lng_to"><option value="">undefined</option></select></td><td class="SLG_td" align="center" width="21%"> </td><td class="SLG_td" align="center" width="6%"> </td><td class="SLG_td" align="center" width="6%"> </td><td class="SLG_td" align="center" width="6%"> </td><td class="SLG_td" align="center" width="6%"> </td><td class="SLG_td" width="10%"> </td><td class="SLG_td" align="right" width="8%"> </td></tr></table></div></div><div id="SLG_shadow_translation_result" style="visibility: visible;"> </div><div id="SLG_loading" class="SLG_loading" style="background: url('chrome-extension://mchdgimobfnilobnllpdnompfjkkfdmi/content/img/util/loading.gif');"> </div><div id="SLG_player2"> </div><div id="SLG_alert100">La función de sonido está limitada a 200 caracteres</div><div id="SLG_Balloon_options" style="background: url('chrome-extension://mchdgimobfnilobnllpdnompfjkkfdmi/content/img/util/bg3.png') #ffffff;"><div id="SLG_arrow_down" style="background: url('chrome-extension://mchdgimobfnilobnllpdnompfjkkfdmi/content/img/util/down.png');"> </div><table width="100%"><tr><td align="left" width="18%" height="16"> </td><td align="center" width="68%"><a class="SLG_options" title="Mostrar opciones" href="chrome-extension://mchdgimobfnilobnllpdnompfjkkfdmi/content/html/options/options.html?bbl" target="_blank">Opciones</a> : <a class="SLG_options" title="Historial de traducciones" href="chrome-extension://mchdgimobfnilobnllpdnompfjkkfdmi/content/html/options/options.html?hist" target="_blank">Historia</a> : <a class="SLG_options" title="ImTranslator Ayuda" href="http://about.imtranslator.net/tutorials/presentations/google-translate-for-opera/opera-popup-bubble/" target="_blank">Ayuda</a> : <a class="SLG_options" title="ImTranslator Feedback" href="chrome-extension://mchdgimobfnilobnllpdnompfjkkfdmi/content/html/options/options.html?feed" target="_blank">Feedback</a></td><td align="right" width="15%"><span id="SLG_Balloon_Close" title="Cerrar">Cerrar</span></td></tr></table></div></div></div>

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16

Shanker, Kartik, et Paul H. Holloway. « Electrodeposition of black chrome selective solar absorber coatings with improved thermal stability ». Thin Solid Films 127, n^o 3-4 (mai 1985) : 181–89. http://dx.doi.org/10.1016/0040-6090(85)90189-0.

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Visitserngtrakul, S., K. Kirtikara, N. Thavarungkul, C. Koompai, P. Monthachitara et C. M. Lampert. « Pilot plant production of black chrome in Thailand : from science to technology ». Solar Energy Materials 21, n^o 1 (novembre 1990) : 1–16. http://dx.doi.org/10.1016/0165-1633(90)90038-3.

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18

Anandan, C., V. K. William Grips, K. S. Rajam, V. Jayaram et Parthasarathi Bera. « Investigation of surface composition of electrodeposited black chrome coatings by X-ray photoelectron spectroscopy ». Applied Surface Science 191, n^o 1-4 (mai 2002) : 254–60. http://dx.doi.org/10.1016/s0169-4332(02)00192-7.

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Harinipriya, S., et Belal Usmani. « Structural and optical behavior of electrodeposited black chrome-graphite encapsulated FeCo nanoparticles composite coatings ». International Journal of Energy Research 41, n^o 5 (20 octobre 2016) : 699–713. http://dx.doi.org/10.1002/er.3669.

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Bufalo, Gennaro, Bruno Molino et Luigi Ambrosone. « Selection of Tanned-Leather Waste in Recovering Novel Raw Material for Manufacturing Rubber Artifacts : Towards a Zero-Waste Condition ». Applied Sciences 10, n^o 15 (4 août 2020) : 5374. http://dx.doi.org/10.3390/app10155374.

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Zero-waste is an ambitious goal to encourage sustainable production, consumption optimum recycling and resource recovery. The recycling and resource recovery of chrome-tanned leather waste is a difficult proposition because of the three-dimensional chemical network of collagen, which renders leather waste incompatible to polymer matrices. Many attempts have been undertaken to reuse leather waste, most of them require technological processes and challenging chemical pretreatments, which make the reuse an economically disadvantageous industrial operation. The paper aims to show how a very fine separation of leather solid waste leads to raw materials suitable for mixtures with natural rubber, without any chemical pretreatment. In other words, the paper intends to be a stimulus to manage leather solid waste carefully to start a cleaner and more profitable production. In particular, various industrial compounds containing different concentrations of post-tanning dyeing, or chrome shaving or oil-tanning and natural rubber were vulcanized through a standard preparation. Some compounds were also reinforced with carbon black and the vulcanization kinetics were monitored through rheometer. Experimental results indicate that there exists an optimal concentration of waste such that post-tanning dyeing post-tanning and chrome shaving are suitable for manufacture floor mats, soles and heels while oil-tanning waste can be used for making hose or conveyor belts. The mechanical performances of the articles prepared by direct mixing with leather waste are the same as those of commercially distributed rubber products.

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Haddad, Abed, Diana Hartman et Ana Martins. « Complex Relationships : A Materials Study of Édouard Vuillard’s Interior, Mother and Sister of the Artist ». Heritage 4, n^o 4 (30 septembre 2021) : 2903–17. http://dx.doi.org/10.3390/heritage4040162.

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Édouard Vuillard (1868–1949) is well known for his small atmospheric paintings, often portraying his own home and family as the subject matter. Interior, Mother and Sister of the Artist (1893) underwent at least one restoration treatment before being acquired by the Museum of Modern Art (MoMA) in 1934. The painting was treated again in 1954, but no analysis was carried out to understand the artist’s methods and materials at that time. To better understand the choices of Vuillard in Interior, Mother and Sister of the Artist, a comprehensive suite of imaging and spectroscopic analyses was undertaken, including: XRR, UVF and IRR Photography, XRF, Raman spectroscopy and SERS, and µ-FTIR. Statistical analysis on the XRF data using MCR-ALS further revealed some of the intricacies of Vuillard’s technique and color choices, where a large number of pigments were used in designing this intimate composition, including lead white, zinc white, bone black, ochre, umber, vermilion, Geranium lake, red lead, ultramarine, Prussian blue, chrome yellow, chrome orange, zinc yellow, strontium yellow, cadmium yellow, and a chromium oxide green.

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Sebastian, P. J., J. Quintana et F. Avila. « Retention of the high optical absorptance in thermally aged black chrome on variably sensitized Cu ». Solar Energy Materials and Solar Cells 45, n^o 1 (janvier 1997) : 65–74. http://dx.doi.org/10.1016/s0927-0248(96)00065-7.

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Arnesia, Pipit Dewi, Naufal Arif Pratama et Fitri Sjafrina. « APLIKASI ARTIFICIAL INTELLIGENCE UNTUK MENDETEKSI OBJEK BERBASIS WEB MENGGUNAKAN LIBRARY TENSORFLOW JS, REACT JS DAN COCO DATASET ». JSiI (Jurnal Sistem Informasi) 9, n^o 1 (2 mars 2022) : 62–69. http://dx.doi.org/10.30656/jsii.v9i1.4243.

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Penelitian ini adalah mengenai rancang bangun aplikasi Artificial Intelligence untuk mendeteksi objek berbasis web yang didukung oleh voice command dengan tujuan memudahkan penggunaannya. Aplikasi ini memanfaatkan model dari Coco dataset, library Tensorflow Js untuk implementasi machine learning pada web, dan library React Js dalam pembuatan aplikasi web. Aplikasi ini diujicoba dengan menggunakan metode black box untuk menguji fitur yang dimiliki yaitu voice command dan object detection (deteksi objek). Uji coba dilakukan menggunakan browser Google Chrome pada perangkat smartphone RealMe 3. Aplikasi ini diharapkan dapat membantu orang-orang yang mengalami gangguan pada matanya agar dapat beraktifitas yang lebih nyaman. Kata kunci: Artificial Intelligence, Machine Learning, Object Detection, Tensorflow Js.

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Fauzan Fikrat Winata, Agus Fikri et M Mujirudin. « Pengaruh Electroplating Krom Terhadap Ketebalan Dan Kekerasan Lapisan Pada Jari-Jari Sepeda Motor Yang Telah Di-Electroplating Nikel ». METALIK : Jurnal Manufaktur, Energi, Material Teknik 1, n^o 1 (14 janvier 2022) : 22–30. http://dx.doi.org/10.22236/metalik.v1i1.8459.

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Abstrak Tujuan dari penelitian ini adalah untuk mengetahui pengaruh hasil electroplating krom terhadap ketebalan dan kekerasan pada jari-jari sepeda motor yang telah di-electroplating nikel. Penelitian ini dilakukan ruang laboratorium PT.Enkei Indonesia dan PT. Murni Cahaya Pratama bekasi, Jawa barat, Indonesia antara Januari - Maret 2021 dengan menggunakan pelapisan electroplating krom, jari-jari sepeda motor terbuat dari material baja st37 yang sudah dilakukan pelapisan electroplating nikel, kemudian electroplating krom. Parameter penelitian adalah kuat arus pencelupan 4A, 6A, dan 8A. Pengujian yang dilakukan adalah ketebalan, kekerasan, struktur makro dan struktur mikro. Hasil penelitian menunjukkan bahwa pengaruh kuat arus terhadap pelapisan electroplating menghasilkan nilai tertinggi ketebalan dengan rata-rata 26,77 μm, struktur mikro bersifat tahan korosi dan non magnetic, struktur makro menunjukkan hasil bercak hitam berindikasi cacat seperti porositi dan nilai tertinggi kekerasan dengan rata- rata 4H. Abstract The purpose of this study was to determine the effect of chrome electroplating on the thickness and hardness of the spokes of a motorcycle wich has been electroplating nikel. This research was conducted in the laboratory room of PT. Enkei Indonesia and PT. Murni Cahaya Pratama Bekasi, West Java, Indonesia between January - March 2021 using nickel-chrome electroplating, the spokes of the motorcycle are made of st37 steel which has been electroplated with nickel, then electroplated with chrome. The parameters of the research were 4A, 6A, and 8A immersion currents. The tests carried out are thickness, hardness, macro structure and micro structure. The results showed that the effect of the strong current on the electroplating coating resulted in the highest value of thickness with an average of 26.77µm, the microstructure was corrosion resistant and non-magnetic, the macro structure showed the results of black spots indicating defects such as porosity and the highest value of hardness with an average 4H

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Nablo, Geoffrey Ray, et Eden May Dela Pena. « A black chrome plating process using trivalent chromium and water-tolerant, ethaline-based ionic liquid baths ». Chemical Papers 75, n^o 9 (28 mai 2021) : 4887–97. http://dx.doi.org/10.1007/s11696-021-01716-6.

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Morales De La Garza, L., L. Cota, J. Siqueiros et G. Navarrette. « Characterization of black chrome deposits on copper by scanning auger microscopy and optical integrated reflectance measurements ». Solar Energy Materials 15, n^o 4 (mai 1987) : 269–75. http://dx.doi.org/10.1016/0165-1633(87)90042-6.

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LEE, T., D. KIM et P. CHUNGMOOAUH. « The optical characteristics of black chrome solar selective films coated by the pulse current electrolysis method ». Solar Energy Materials and Solar Cells 29, n^o 2 (mars 1993) : 149–61. http://dx.doi.org/10.1016/0927-0248(93)90073-c.

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Quintana, J., et P. J. Sebastian. « The influence of various substrate treatments on morphology and selective absorber characteristics of electrochemical black chrome ». Solar Energy Materials and Solar Cells 33, n^o 4 (août 1994) : 465–74. http://dx.doi.org/10.1016/0927-0248(94)90006-x.

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Rydchuk, Mariana, Galyna Mykhalyna, Olga Dobryanska, Olha Korkuna et Teodoziya Vrublevska. « Osmium assay in fixatives and stained rat tissues by means of acid and o,o′-dihydroxo substituted monoazo dyes and some flavonoids ». Open Chemistry 9, n^o 5 (1 octobre 2011) : 886–95. http://dx.doi.org/10.2478/s11532-011-0070-2.

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AbstractNew simple, rapid and accurate spectrophotometric techniques for osmium assays in fixatives and stained tissues have been elaborated using acid (Tropaeolin O, Tropaeolin OOO-I, Tropaeolin OOO-II, Orange G), o,o′-dihydroxo substituted azo dyes (Eriochrome Blue Black R, Acid Chrome Dark-Blue, Eriochrome Black T) and flavonoids (morin, quercetin, luteolin). Methods are based on sensitive osmium(IV) reactions with reagents and the formation of stable coloured compounds. Tolerance ratios of main matrix components of histological specimens during Os(IV) spectrophotometric determination with reagents has been established. Results of osmium determination in fixatives and fixed tissues, obtained by means of different reagents, appeared to be sufficiently similar, although effects of matrix components differ. The accuracy of spectrophotometric osmium assay in fixatives with azo dyes has been confirmed with voltammetric investigations. Results obtained from osmium uptake by rat gum tissues are valuable for clinical testing of dental drugs, indicating the influence of drug treatment on the gums.

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Hernandez, George A., Daniel Martinez, Stephen Patenaude et Michael C. Hamilton. « Nanostructured Amorphous Silicon on Metal Electrodes : Electrical and Optical Properties ». MRS Proceedings 1551 (2013) : 61–66. http://dx.doi.org/10.1557/opl.2013.897.

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ABSTRACTWe present two distinct methods to nanostructure the surface of amorphous silicon to produce unique, nanoscale surface features. One method is a dry etch process that employs a modified Bosch1 process on an advanced silicon etcher to produce needle-like features of amorphous silicon. Likewise, we also investigated metal-assisted wet chemical etching2 as an alternative method to nanostructure the amorphous silicon to produce porous-like features. The resulting surface topography leads to an optically black appearance over patterned or large areas. This is a result of the interspacing between each needle and pore that leads to a high optical absorption. Thus, we designate it as black amorphous silicon (b-a-Si). We have deposited and formed regions of b-a-Si on variety of insulating films and metal electrodes, including chrome and titanium. In this study, we characterize the electrical and optical properties of as-deposited amorphous silicon and nanostructured amorphous silicon.

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Chen, Hao Tian, Ren Bo Song, Huan Jun Wei, Wei Feng Huo et Li Fang Yang. « Surface Performance of Chrome-Free Anti-Fingerprint Zinc and Zn-Al-Mg Coated Steel ». Materials Science Forum 1035 (22 juin 2021) : 358–67. http://dx.doi.org/10.4028/www.scientific.net/msf.1035.358.

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A principle investigation of the fingerprint resistance, alcohol resistance, solvent resistance, humidity resistance, high temperature resistant yellow degeneration and black tarnish resistance of pure Zinc and Zn-Al-Mg coating were performed in this study. To detect above surface performance and make some constructive suggestions, a series of simulations experiments and a surface performance evaluation system based on light color differentiation measurement instrument were designed. The results show that the two products both can meet the needs of users in above-mentioned surface performance, besides pure Zinc coated product has more advantages in this performance in comparison to Zn-Al-Mg coated product. Users should pay attention to clean the fingerprint regularly which attached to the surface of the steel plate during use and the protection with the exposed surfaces of the steel during shipping.

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Usmani, Belal, S. Harinipriya, Narendra Kumar et Vatsana Gupta. « Solar Selective Coatings with Enhanced Thermal and Corrosion Stability : Electrochemically Deposited Black Chrome on Stainless Steel in the Presence of Graphite Encapsulated FeCo Nanoparticles ». Advanced Materials Research 875-877 (février 2014) : 388–93. http://dx.doi.org/10.4028/www.scientific.net/amr.875-877.388.

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Black chrome coatings were electrodeposited under galvanostatic conditions on SS substrates. To enhance the thermal stability of the coatings for viable usage in parabolic trough receiver tubes in solar thermal applications beyond 250°C, graphite encapsulated FeCo nanoparticles had been introduced in the electrolyte solution at different weight percentages (0.025, 0.05, 0.1). An increase in the thermal stability of the coatings in the range of 400°C to 600°C is noticed from the STA analysis. The corrosion analysis (Tafel) and cyclic voltammetric studies of the coatings in the presence and absence of nanoparticles have been carried out in 3.5% NaCl solution to understand the stability of the coating in saline environment.

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Axelbaum, R. L., et H. Brandt. « The effect of substrate surface preparation on the optical properties of a black chrome solar absorber coating ». Solar Energy 39, n^o 3 (1987) : 233–41. http://dx.doi.org/10.1016/s0038-092x(87)80032-4.

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Lee, Tai K., W. B. Kim, S. H. Cho et P. Chungmoo Auh. « The effects of the pulse current electrolysis on the optical characteristics of black chrome solar selective coatings ». Solar Energy Materials 23, n^o 1 (novembre 1991) : 13–23. http://dx.doi.org/10.1016/0165-1633(91)90149-f.

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Sukanta, Anbu Manimaran, M. Niranjan Sakthivel, Gopalsamy Manoranjith et Loganathan Naveen Kumar. « Performance Enhancement of Solar Parabolic Trough Collector Using Intensified Ray Convergence System ». Applied Mechanics and Materials 867 (juillet 2017) : 191–94. http://dx.doi.org/10.4028/www.scientific.net/amm.867.191.

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Solar Energy is one of the forms of Renewable Energy that is available abundantly. This work is executed on the enhancement of the performance of solar parabolic trough collector using Intensified Ray Convergence System (IRCS). This paper distinguishes between the performance of solar parabolic trough collector with continuous dual axis tracking and a fixed solar parabolic trough collector (PTC) facing south (single axis tracking). The simulation and performance of the solar radiations are visualized and analyzed using TRACEPRO 6.0.2 software. The improvement in absorption of solar flux was found to be enhanced by 39.06% in PTC using dual axis tracking, absorption of solar flux increases by 52% to 200% in PTC receiver using perfect mirror than PTC using black chrome coating.

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Mun, Seong Woo, Sun Myung Lee, Jongseo Park, Young Seok Kang et Ji Sun Kim. « A Study on Painting Characteristics by Analysis of Pigments Used in Unhangak Hall Dancheong in Hwaryeongjeon Shrine, Suwon ». Journal of Conservation Science 38, n^o 5 (31 octobre 2022) : 430–43. http://dx.doi.org/10.12654/jcs.2022.38.5.07.

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A microscopy investigation has been performed together with non-destructive component analysis to verify properties of pigments used in Unhangak Hall Dancheong in Hwaryeongjeon Shrine, Suwon. In addition, X-ray diffraction analysis, polarization microscopy, and scanning electron microscopy analyses were performed on the pigment specimens collected at the site. Dividing the Unhangak interior into areas and performing pigment property analyses has confirmed that the pigments Jusa, Jangdan, and Sukganju (iron oxide, red ocher) have been used for red colors. Jahwang, Gold, and Gamboge (organic pigments) have been used for yellows, the pigments Hayeob, Seokrok, Neorok, Samrok, and Chrome green have been used for greens, and Seogcheong and Heocheong have been used for blues. Baekto, Yeonbaek, Hobun, and Chalk have been used for whites, and Meog has been used for black. The inclusion of Chrome green (a modern pigment) among the pigments used to produce the Dancheong of Unhangak Hall has been confirmed. With this one exception, traditional pigments have been used. One unique property of the dancheong decorating Unhangak Hall include the use of higher than ordinary proportions of Jusa and Hayeob than is ordinarily found in traditional buildings. Another distinction is that expensive pigments including Seogcheong, Heocheong, Seokrok, Jusa, Jahwang, Gold, and Hayeob have been intensively used in worship spaces including the center compartment (Jeongkan) and Nae-hap. These pigments have been used over a coating of white primer (mostly Baekto, Yeonbaek, Hobun or Chalk) to improve choromaticity and color vibrance.

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Lipiec, Adrianna, et Bogusław Andres. « The influence of mould fungus on pigments used in wall and ceiling décor on the example of the wooden church of Saint George in Ostropa ». Annals of WULS, Forestry and Wood Technology 110 (30 juin 2020) : 48–53. http://dx.doi.org/10.5604/01.3001.0014.3886.

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The influence of mould fungus on pigments used in wall and ceiling décor on the example of the wooden church of Saint George in Ostropa. This research aimed to establish the change in colour of selected pigments used in polychrome due to the effects of Aspergillus niger. The research was conducted on the following pigments: cremnitz white, zinc white, vermilion, colcothar, chrome green, artificial ultramarine, burnt umber, carbon black, smalt, minium, azurite, Prussian blue and chalk. Measurements were taken using a colorimeter in the CIELAB colour space. The biggest change in colour was exhibited by artificial ultramarine, while the most stable in colour turned out to be minium. The smallest change in colour of dried samples was shown by burnt umber, while the biggest change was noted again for artificial ultramarine.

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Kumar, Rajesh, Ajoy K. Saha, Belal Usmani et Ambesh Dixit. « Optimization and structure-property correlation of black chrome solar selective coating on Copper and Nickel plated copper substrates ». Materials Today : Proceedings 5, n^o 11 (2018) : 23423–27. http://dx.doi.org/10.1016/j.matpr.2018.11.082.

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Lazidou, Dimitra, Dimitrios Lampakis, Ioannis Karapanagiotis et Costas Panayiotou. « Investigation of the Cross-Section Stratifications of Icons Using Micro-Raman and Micro-Fourier Transform Infrared (FT-IR) Spectroscopy ». Applied Spectroscopy 72, n^o 8 (29 mai 2018) : 1258–71. http://dx.doi.org/10.1177/0003702818777772.

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The cross-section stratifications of samples, which were removed from six icons, are studied using optical microscopy, micro-Raman spectroscopy, and micro-Fourier transform infrared (FT-IR) spectroscopy. The icons, dated from the 14th to 19th centuries, are prominent examples of Byzantine painting art and are attributed to different artistic workshops of northern Greece. The following materials are identified in the cross-sections of the icon samples using micro-Raman spectroscopy: anhydrite; calcite; carbon black; chrome yellow; cinnabar; gypsum; lead white; minium; orpiment; Prussian blue; red ochre; yellow ochre; and a paint of organic origin which can be either indigo ( Indigofera tinctoria L. and others) or woad ( Isatis tinctoria L.). The same samples are investigated using micro-FT-IR which leads to the following identifications: calcite; calcium oxalates; chrome yellow; gypsum; kaolinite; lead carboxylates; lead sulfate (or quartz); lead white; oil; protein; Prussian blue; saponified oil; shellac; silica; and tree resin. The study of the cross-sections of the icon samples reveals the combinations of the aforementioned inorganic and organic materials. Although the icons span over a long period of six centuries, the same stratification comprising gypsum ground layer, paint layers prepared by modified “egg tempera” techniques (proteinaceous materials mixed with oil and resins), and varnish layer is revealed in the investigated samples. Moreover, the presence of three layers of varnishes, one at the top and other two as intermediate layers, in the cross-section analysis of a sample from Virgin and Child provide evidence of later interventions.

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Kirilov, Rumen, P. Stefchev, Z. Alexieva et H. Dikov. « A High Effective Selective Absorbing Coating for Solar Thermal Collectors ». Solid State Phenomena 159 (janvier 2010) : 97–100. http://dx.doi.org/10.4028/www.scientific.net/ssp.159.97.

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High effective selective absorbing bimetallic structures of Sn and Ni for solar thermal collectors have been investigated. They were produced by cathode electrodeposition on polished copper plates from water solution. Scanning electron microscopy micrographs show that they consist of a highly branching layer of bimetallic needles. They serve as a radiation trap for the solar radiation because of multiple reflections. The reflectance spectra were measured in the visible and infrared range. The absorptance of the coating was calculated as 98% in the solar radiation range and the thermal emittance in the infrared region at 100 °C - as 10%. The selective absorbing coatings are investigated by X-ray diffraction analysis and X-ray photoеlectron spectroscopy as well as optical spectra in the UV-VIS and IR region. The samples with selective absorbing coatings have been tested at natural solar radiation. The results show that the new coatings have substantial advantages in comparison to the widely used black chrome.

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Bakovic, Marica, Slobodanka Karapandza, Sajed Mcheik et Ana Pejović-Milić. « Scientific Study of the Origin of the Painting from the Early 20th Century Leads to Pablo Picasso ». Heritage 5, n^o 2 (28 mai 2022) : 1120–40. http://dx.doi.org/10.3390/heritage5020060.

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This study applied multiple scientific approaches to establish the significance of an old work of art, Red Guitar, by examining its historical origin and the color materials used in its creation. Additionally, the study provides thus far unknown pieces of Olga Picasso’s family history to be added to her biography. Scientific approaches included digital X-ray radiography, X-ray fluorescence spectroscopy, infrared Fourier transform spectroscopy, Raman spectroscopy, and elemental thermal conductivity analysis. This combination of techniques provided a broad confirmation as to when the painting was created. The artwork includes colors (white, black, blue, yellow, green, red, and brown/red) and prevalent use of lead- and iron-based historic pigments—chrome yellow, yellow ochre, and red ochre. It also documents the use of unconventional materials, such as the colorant Pigment Red 4, and nitrocellulose. This investigation led to the conclusion that the artwork, Red Guitar, is authentic and in accordance with Picasso’s work during the first two decades of the 20th century.

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Yer Çelik, Esra Nurten. « Effects of exogenous melatonin supplementations on some elemental contents in Anatolian black pine (Pinus nigra J.F. Arnold. subsp. pallasiana (Lamb.) Holmboe) seedling tissues ». BioResources 16, n^o 3 (1 juillet 2021) : 5706–20. http://dx.doi.org/10.15376/biores.16.3.5706-5720.

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A multi-directional relationship may be conceivable between elements and melatonin in sessile organisms. Melatonin is an important hormone that helps regulate metabolism. This study investigated how different doses (0 μM/control, 250 μM, 500 μM, 1000 μM, and 1500 μM) of exogenous melatonin supplementations (EMS) affected the elemental contents in Anatolian black pine (Pinus nigra Arnold. ssp. pallasiana (Lamb.) Holmboe) seedling tissues (root, stem, and needle). Two different application forms (root-dipping and needle-spraying) were selected in the study. In the samples of seedling tissues, sodium (Na), potassium (K), calcium (Ca), iron (Fe), aluminum (Al), magnesium (Mg)/ppm; chrome (Cr), cobalt (Co), copper (Cu), manganese (Mn), nickel (Ni), phosphorus (P), selenium (Se), silicium (Si), silver (Ag), sulfur (S), zinc (Zn), and molybdenum (Mo)/ppb were analyzed using inductively coupled plasma optical emission spectroscopy (ICP-OES). Of the 18 elements examined, there was a statistically significant difference (p<0.05) between all seedling tissues and different doses of EMS. The results show that EMS may have the regulatory effect on seedling tissue element metabolism.

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Demangeat, G., O. Hemmer, C. Fritsch, O. L. Gall et T. Candresse. « In vitro processing of the RNA-2-encoded polyprotein of two nepoviruses : tomato black ring virus and grapevine chrome mosaic virus ». Journal of General Virology 72, n^o 2 (1 février 1991) : 247–52. http://dx.doi.org/10.1099/0022-1317-72-2-247.

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Algarni, Abdullah M. « The Historical Relationship between the Software Vulnerability Lifecycle and Vulnerability Markets : Security and Economic Risks ». Computers 11, n^o 9 (14 septembre 2022) : 137. http://dx.doi.org/10.3390/computers11090137.

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Vulnerability lifecycles and the vulnerability markets are related in a manner that can lead to serious security and economic risks, especially regarding black markets. In the current era, this is a relationship that requires careful scrutiny from society as a whole. Therefore, in this study, we analyzed the actual data relating to vulnerability-regulated markets in the case of two well-known browsers, Firefox and Chrome. Our analysis shows that financial reward is the main motivation for most discoverers, whose numbers are increasing every year. In addition, we studied the correlation between vulnerability markets and the vulnerability lifecycle from many perspectives, including theoretical concepts, and statistical approaches. Furthermore, we discussed the potential risks for people and organizations in terms of security and economics. We believe that money is the main motivation in vulnerability markets and that the latter are, in turn, the main driver of the vulnerability lifecycle, which presents several risks to the software industry and to society itself. Thus, in our opinion, if vulnerability markets can be controlled, the vulnerability lifecycle will be reduced or eliminated, along with its associated risks.

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Narashimman, K., et V. Gomathi. « Clinical evaluation of common allergens in contact dermatitis to cement ». International Journal of Research in Dermatology 4, n^o 2 (25 avril 2018) : 172. http://dx.doi.org/10.18203/issn.2455-4529.intjresdermatol20181817.

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<p class="abstract"><strong>Background:</strong> Cement is the most common cause of occupational dermatitis in construction industry. Skin contact with cement results in irritant contact dermatitis ranging from cement burns to chronic cumulative irritant contact dermatitis. Chromate, cobalt, nickel, epoxy resins and rubber chemicals are the important allergens in construction workers. The objective of the study was to study various clinical pattern of distribution and association between the duration of exposure to cement and clinical manifestation in occupational group.</p><p class="abstract"><strong>Methods:</strong> 107 cases of contact dermatitis with history of exposure to cement attending the occupational contact dermatitis outpatient department, Department of Dermatology, Rajiv Gandhi Government General Hospital and college, All the patients were subjected to blood investigation such as complete hemogram, liver function test, renal function test and absolute eosinophil count. Patient with history and clinical features suggestive of contact dermatitis due to cement were patch tested.<strong></strong></p><p class="abstract"><strong>Results:</strong> Among 107 patients, the most common pattern of involvement includes extremities which account for 64 patients (59.8%) Involvement of face, neck, trunk and extremities was seen in 11 patients (10.3%). Among 81 positive patch test patients, chromium was positive in 78 patients (96.3%) followed by epoxy resin in 14 patients 17.3% and cobalt and thiuram mix in 9 patients (11.1%) each and the least was black rubber mix in 3 patients (3.7%).</p><p class="abstract"><strong>Conclusions:</strong> This study emphasizes the need for standardization in the chrome content of cement. Strict workplace safety guidelines should be implemented from government to protect workers from developing contact dermatitis to cement. </p>

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Rosyida, Novita, Layta Dinira, Alfi Nur Rusydi, Agung Dwi Saputra et Ginanjar Setiabudi. « Development of Web-based Geographic Information System for Water Quality Monitoring of Watershed in Malang ». INTENSIF : Jurnal Ilmiah Penelitian dan Penerapan Teknologi Sistem Informasi 6, n^o 2 (14 août 2022) : 184–97. http://dx.doi.org/10.29407/intensif.v6i2.17514.

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Human activity and climate change significantly impact water quality, especially in Malang's watershed. This research aims to develop a web-based Geographic Information System (Web- GIS) for water quality monitoring in that watershed. The water quality data had been collected from Enviromental Office of Malang District and Malang City. Water quality in this application was determined using the STORET method, comparing water quality data to water quality standards according to Government regulation so that the water quality status at each monitoring point will be known. The total 57 monitoring points are visualized spatially in this application based on the sampling location plotted by Global Positioning System (GPS). The longitude and latitude coordinates of the monitoring location had been converted in GeoJSON using Quantum GIS (QGIS) software. Google Map API key was used to display a sampling location map on the website. Web-GIS application was tested functionally using a black box, compatibility, and usability testing. Based on the testing results, it worked correctly on Chrome, Edge, Mozilla, and Opera browsers for PC/Laptops and also for browsers on Android smartphones version 4 and above. The application could be appropriately used and efficiently based on usability testing results.

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Fahim Aslamsyah, Ahmad, Yosep Agus Pranoto et Renaldi Primaswara Prasetya. « SISTEM INFORMASI GEOGRAFIS DAERAH HORTIKULTURA (SAYURAN) KABUPATEN MALANG ». JATI (Jurnal Mahasiswa Teknik Informatika) 4, n^o 2 (9 octobre 2020) : 37–43. http://dx.doi.org/10.36040/jati.v4i2.2723.

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Sistem Informasi Geografis (SIG) merupakan sistem informasi modern yang efektif digunakan untuk membuat peta dan mengintegrasi informasi. Untuk saat ini Dinas Tanaman Pangan, Hortikultura dan Perkebunan Kabupaten Malang masih mengalami kesulitan memantau sayur-sayuran di Kabupaten Malang karena luasnya wilayah dan belum ada sistem yang terkomputerisasi untuk dapat membantu pendataan hasil panen sayur-sayuran. Sistem yang dibangun yaitu sebuah sistem informasi geografis daerah hortikultura sayuran kabupaten malang, peta pada sistem ini dibuat menggunakan ArcGis 10.6 dan Qgis dalam hal ini dengan adanya sistem informasi geografis ini langkah kedepannya akan lebih mempermudah untuk melihat informasi daerah hortikultura sayuran yang sudah ada maupun yang belum ada di kecamatan tersebut. Berdasarkan hasil dari pengujian pembangunan Sistem Informasi Geografis yang telah selasai dilakukan menyatakan bahwa hasil dari program yang telah dibuat memiliki hasil yang sesuai, hal tersebut dapat di buktikan dengan aplikasi sistem informasi geografis Kabupaten Malang sudah mampu memberikan informasi diantaranya daerah penghasil sayuran, luas perkebunan, jumlah produksi atau hasil panen per tahun. Hasil untuk pengujian black-box yaitu pengujian terhadap cara kerja program dan pengujian fungsional sistem dengan akses sebagai admin dan user sesuai dengan fungsinya pada browser Google Chrome, Mozila Firefox dan Microsoft Edge.

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Xu, Hui, Yajuan Zhang, Yong Cheng, Weiguo Tian, Zeting Zhao et Jin Tang. « Polyaniline/attapulgite-supported nanoscale zero-valent iron for the rival removal of azo dyes in aqueous solution ». Adsorption Science & ; Technology 37, n^o 3-4 (15 février 2019) : 217–35. http://dx.doi.org/10.1177/0263617418822917.

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In this paper, polyaniline/attapulgite (PANI/APT)-supported nanoscale zero-valent iron (nZVI) composites were synthesized by liquid-phase chemical reduction method and used for the removal of two kinds of dyes. The structure of as-prepared nZVI/PANI/APT was characterized by various test methods. The removal property and degradation mechanism for azo (alizarin yellow R, methyl red, chrome black T, methyl orange) and non-azo (methylene blue, rhodamine B) dyes in aqueous solution were investigated. The presence of PANI/APT can decrease the aggregation of nZVI particles with maintenance of reactivity and improving adsorption capacity for degradation azo dye. The experiment results showed that the removal property of the composite materials on azo dyes is obviously better than that on non-azo dyes. The varying removal efficiencies of dyes depend on the different degradation mechanisms. Azo dyes removal by nZVI/PANI/APT was mainly due to the reductive cleavage of the N = N of nZVI, while non-azo dyes removal mainly contributes to the adsorption of PANI/APT. The study demonstrated that nZVI/PANI/APT has potential applications for the removal of azo dyes from wastewaters.

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Usmani, B., et H. Seshadri. « Characterization of Black Chrome Films in the Presence and Absence of Graphite Encapsulated FeCo Nanoparticles Prepared by Electrodeposition Technique for Solar Thermal Applications ». ECS Transactions 53, n^o 19 (6 octobre 2013) : 47–61. http://dx.doi.org/10.1149/05319.0047ecst.

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Smyk, Mark C., et James M. Franklin. « A synopsis of mineral deposits in the Archean and Proterozoic rocks of the Lake Nipigon Region, Thunder Bay District, Ontario ». Canadian Journal of Earth Sciences 44, n^o 8 (1 août 2007) : 1041–53. http://dx.doi.org/10.1139/e07-013.

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A variety of metallic and non-metallic mineral deposit types occur within Archean and Proterozoic rocks in the area encompassing the Lake Nipigon Region Geoscience Initiative. Archean deposit types include Algoma-type banded iron formation-hosted iron (e.g., Lake Nipigon iron range); volcanogenic massive sulphide copper–zinc (e.g., Onaman–Tashota belt); ultramafic intrusion-hosted chromium (e.g., Puddy–Chrome lakes); mafic to ultramafic intrusion-hosted copper–nickel – platinum group element (PGE) (e.g., Lac des Iles); and pegmatite-hosted deposits of rare metals (Li, Ta, Be), uranium, and molybdenum (e.g., Georgia Lake field, Black Sturgeon Lake, and Anderson Lake, respectively). Mesothermal lode gold deposits are prominent in the Beardmore–Geraldton camp. Superior-type iron formation occurs in Paleoproterozoic Gunflint Formation. "Red-bed" copper occurs in Mesoproterozoic Midcontinent Rift-related Osler Group volcanic and interflow sedimentary rocks. Native copper and copper sulphides occur in Mesoproterozoic Sibley Group sedimentary rocks, adjacent to ultramafic intrusions. These mafic to ultramafic intrusions, associated with Midcontinent Rift magmatism, host copper–nickel–PGE deposits (e.g., Seagull, Great Lakes Nickel). Silver-bearing veins occur in Paleoproterozoic Animikie Group sedimentary rocks in proximity to Midcontinent Rift-related mafic intrusions (e.g., Silver Islet, Silver Mountain). Lead–zinc–barite veins, uranium-bearing veins, and amethyst vein and replacement-type deposits may be cogenetic and formed at or near the unconformity between Sibley Group basal sandstone and underlying Archean granitic basement (e.g., Dorion, Black Sturgeon Lake, McTavish Township). The hydrothermal systems that produced all of these veins were probably driven by heat associated with Midcontinent rifting. Many occur in structures related to rift-bounding faults. Iron oxide – copper–gold deposits may occur near the English Bay intrusion.

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