SELENIUM SÖZCÜĞÜ İNGILIZCE DİLİNDE NE ANLAMA GELİR?
Selenyum
Selenyum sembolü Se ve atom numarası 34 olan bir kimyasal elementtir. Periyodik tablo sütununda bitişik olan kalkojen elemanları kükürt ve tellürü arasında bulunan orta özellikli bir ametaldir. Nadiren doğadaki elementel halde veya saf cevher bileşikleri olarak oluşur. Selenyum, 1817'de Jons Jacob Berzelius tarafından keşfedildi ve yeni elementin daha önce bilinen tellürum ile benzerliğini kaydetti. Selenyum, kükürtün kısmen yerini aldığı yerdeki metal sülfid cevherlerinde nadir bulunur. Ticari olarak selenyum, bu cevherlerin rafine edilmesinde çoğunlukla bakır üretimi sırasında bir yan ürün olarak üretilir. Saf selenit veya selenat bileşikleri olan mineraller bilinir, ancak nadirdir. Günümüzde selenyumun başlıca ticari kullanımları camcılıkta ve pigmentlerde. Selenyum bir yarıiletken olup fotosellerde kullanılır. Eskiden önemliyen elektronikte olan kullanımlar çoğunlukla silikon yarıiletken aygıtlar tarafından değiştirildi. Selenyum birkaç tür DC güç dalgalanma koruyucusu, bebek formülü ve bir tür floresan kuantum nokta içinde kullanılmaya devam ediyor.
İngilizce sözlükte selenium sözcüğünün tanımı
Sözlükteki selenyumun tanımı, çeşitli allotropik formlarda bulunan metalik olmayan bir elementtir. Volkanik alanlarda ve sülfit cevherlerinde, piritte, serbesttir. Ortak biçim, fotoiletken, fotovoltaik ve yarı iletken olan gri kristalin bir katıdır: fotoseller, güneş pilleri ve kserografide kullanılır. Sembol: Se; atom numarası: 34; atom ağırlığı: 78.96; değerlik: -2, 4 veya 6; göreceli yoğunluk: 4.79; Erime noktası: 221 ° C; Kaynama noktası: 685 ° C.
«SELENIUM» İLE İLİŞKİLİ İNGILIZCE KİTAPLAR
selenium sözcüğünün kullanımını aşağıdaki kaynakça seçkisinde keşfedin.
selenium ile ilişkili kitaplar ve İngilizce edebiyattaki kullanımı ile ilgili bağlam sağlaması için küçük metinler.
1
Selenium 2 Testing Tools: Beginner's Guide
Learn to use Selenium Testing tools from scratch.
2
Selenium Testing Tools Cookbook
This is a cookbook packed with code examples and step-by-step instructions to ease your learning curve.
3
Selenium: Its Molecular Biology and Role in Human Health
The purpose of the book is the same as the first two volumes which is to bring an up to date status of current research in the rapidly developing selenium field centered around the health benefits attributed to this element and how this ...
Dolph L. Hatfield, Marla J. Berry, Vadim N. Gladyshev,
2011
4
Selenium Simplified: A Tutorial Guide to
Selenium RC with ...
No time is wasted on the theory of automation or padding about the tools. This book focuses on the practical knowledge needed to automate tests for production systems.
Alan John Richardson,
2012
5
An Introduction to Testing Web Applications with Twill and ...
This Short Cut is an introduction tobuilding automated web tests using twotools, twill and Selenium. twill is a simpleweb scripting language that can be usedto automate web tests, while Selenium isa web testing framework that runs in ...
C. Titus Brown, Gheorghe Gheorghiu, Jason Huggins,
2007
6
Selenium in Food and Health
There is evidence that the decline in selenium intake in UK and certain other
countries is to an extent due to a reduction in the importation of selenium-rich
high protein wheat and bread-making flour from North America. In 1970 the
proportion ...
7
Environmental Chemistry of
Selenium
"Written as a complement to the definitive work selenium in the Environment (Marcel Dekker, Inc.).
William T. Frankenberger, Richard A. Engberg,
1998
8
Selenium Assessment in Aquatic Ecosystems: A Guide for ...
This book is a practical handbook for everyone dealing with selenium in aquatic environments.
9
Selenium in the Environment
The focus of this work is upon Se management and remediation strategies.
10
Selenium and Tellurium Chemistry: From Small Molecules to ...
Our knowledge of the chemistry of selenium and tellurium has seen significant progress in the last few decades.
J. Derek Woollins, Risto Laitinen,
2011
«SELENIUM» TERİMİNİ İÇEREN HABERLER
Ulusal ve uluslararası basında konuşulanları ve
selenium teriminin aşağıdaki haberlerde hangi bağlamda kullanıldığını keşfedin.
China Orders 3 Milk Brands To Recall Products With Nitrate …
Three milk producers of infant formula powder in Shaanxi province in China will be recalled due to high level of nitrate and selenium, China's Food and Drug ... «Headlines & Global News, Haz 15»
EPA, Justice Department and State of California require Lehigh …
The settlement addresses Lehigh's and Hanson's violations of the Clean Water Act. The Cupertino facility routinely discharged excessive selenium into ... «U.S. EPA.gov, Nis 15»
Selenium Treatment Reduces Heart Attack Damage by 88 Percent …
A form of selenium could reduce cardiac damage by nearly 90 percent and improve heart function if administered during a heart attack, a preliminary study finds. «Newsmax, Nis 15»
Alpha Natural Resources Affiliates Settle Selenium Cases
19, 2014 /PRNewswire/ -- Alpha Natural Resources, Inc. (NYSE: ANR) affiliated mining operations in West Virginia announce the settlement of three selenium ... «PR Newswire, Ara 14»
Decreased risk of colorectal cancer linked with higher selenium levels
According to the National Institutes of Health, selenium plays roles in reproduction, thyroid hormone metabolism and DNA syntheses, and has protective benefits ... «Medical News Today, Ara 14»
Study: Elevated selenium in upper Blackfoot River
BOISE, Idaho (AP) - A government study of selenium pollution in a southeastern Idaho watershed where hundreds of grazing animals have died has found that ... «Washington Times, Ara 14»
How selenium in broccoli may fight melanoma
The mineral selenium, which naturally occurs in foods like broccoli and garlic, appears to slow down a process that allows cancers such as melanoma, prostate ... «Futurity: Research News, Kas 14»
Selenium Important For Female Fertility
Selenium is a natural antioxidant. In Western diets, selenium deficiency is not a health problem, but fertility is. If people do not eat certain food groups or their ... «Design & Trend, Kas 14»
Vitamin E, Selenium: No Effect on Cataract Risk in Men
Selenium and vitamin E supplementation are unlikely to affect age-related cataract development in older men, according to an article published online ... «Medscape, Eyl 14»
Coal Company Unlawfully Polluted West Virginia Water, Federal …
This photo shows a coal slurry impoundment in Harrison County, W. Va., similar to the one a federal judge recently found was contributing excess selenium ... «ThinkProgress, Nis 14»