text:
Stocks turn higher on Wall Street; Pfizer gains
NEW YORK (AP) — Stocks are mostly higher on Wall Street as the stock market turns positive after three days of losses.
Health care stocks rose Tuesday after the big drugmaker Pfizer turned in earnings that were higher than investors were expecting.
The Dow Jones industrial average rose 90 points, or 0.6 percent, to close at 15,928. The Standard & Poor's 500 index rose 11 points, or 0.6 percent, to 1,792.
The Nasdaq composite rose 14 points, or 0.4 percent, to 4,098.
Technology stocks were held back by a decline in Apple, which slumped 8 percent after forecasting revenue that was less than the market was expecting.
The Federal Reserve started two-day policy meeting Tuesday. Investors are waiting to see if the central bank makes further reductions to its big bond-buying program.


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Event: HOUSEFULL 2 stars Akshay Kumar, Asin, Riteish Deshmukh, Jacqueline Fernandez, Shazahn Padamsee, Zarine Khan, John Abraham and Shreyas Talpade walk the ramp at a fashion show for designer Aki Narula.
Guest List: Akshay Kumar, John Abraham, Shreyas Talpade, Ritesh Deshmukh, Zareen Khan, Shazahn Padamsee, Asin, Jacqueline Fernandez, Mink Brar, Siddharth Kannan, Claudia Ciesla
Bollywood celeb Aamir Khan along with wife Kiran Rao were spotted at PVR.
Bollywood producers-directors Vidhu Vinod Chopra, Krishan Kumar, Ravi Bahl, Divya Khosla Kumar, Sajid Nadiadwala, Wardha Nadiadwala celebrate diwali with Bhushan Kumar
Bollywood celebs Kareena Kapoor Khan, Malaika Arora, Sonali Bendre, Nimrat Kaur among others were snapped by paparazzi.Bebo looked super cool in a casual look. She wore a white t-shirt with yoga pants...
Bollywood actress Shama Sikander celebrated Diwali festival at her residence.
Bollywood celebs Aamir Khan, Zaira Wasim, Fatima Sana Shaikh, Sanya Malhotra, Anil Kapoor, Nitesh Tiwari, Aparshakti Khurrana, Bhushan Kumar, Javed Akhtar, Shabana Azmi, Sachin Tendulkar, Rajkumar Hir...

subset: commoncrawl


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In glass lenses a distinction is made between mineral glass (Abbe number > 55) and flint glass (Abbe number < 50).
The term "crown glass" (B 270) was first introduced to describe the appearance of the blown, circular glass plates with crown-shaped attachments once made in England. The name flint glass comes from an earlier production technique in which pure, brightly coloured flint stone (quartz) was used.
Before 1886 the standard crown and flint glasses were the only types known. The development of new materials started after this date. Research into ways of producing new types of glass, and types with a higher refractive index in particular, is continuing to this very day. The goal is to achieve as low a dispersion as possible by the addition of suitable substances, even for materials displaying a high refractive index. At the same time, a high level of hardness and chemical resistance must also be guaranteed for the finished spectacle lenses.
The term "glass" is used to denote all materials whose chemical structure is similar to that of a liquid, but whose viscosity at a normal temperature is so high that they can be described as solids.
Glass has an amorphous (non-crystalline) structure, i. e. the configuration of the atoms or molecules does not follow any principle of periodic arrangement. A large number of different types of glass exist, from white to tinted, and from clear to opaque.
Mineral glass is obtained by overcooling a melt and is hence also often described as an overcooled liquid. In actual fact, glass is not a solid but even in its solid state displays a certain viscosity which is not noticeable in everyday use.
Mineral glass is the product of a melting process. The composition of the glass melt is as follows:
70% glass former (quartz)
20% fluxing material (potash and soda)
10% glass hardener (oxides)
By the addition of different metal oxides and fluorides (1%), the optical properties and colour of the glass can be deliberately changed. The addition of lead, titanium and lanthanum oxide increases, for example, the refractive index, while barium oxide and fluoride reduce dispersion. The glass melt can also be dyed for tinted sunglass lenses by the use of iron, cobalt, vanadium and manganese. To obtain photochromic properties, metal compounds are added with fluorine, chlorine and bromine (halides) to the melt.
All of the substances required to produce the required glass are melted in a furnace at temperatures of between 1400 and 1500 °C. The gas bubbles contained in the viscous melt can be removed by the addition of so-called fining agents. Stirring for several hours after the fining procedure prevents streaks, inclusions and colour casts. After the melting process, the glass melt is directed – at a slightly lower temperature – through a dosage unit to an automatic press where the pressings are then produced. These pressings are cooled in a special oven known as a lehr before being processed into finished spectacle lenses.
|Glass or mineral lenses
|Very high refractive indices allow the production of thin lenses, even for high prescriptions
|Large range of refractive indices from n = 1.5 to n = 1.9
|Resistant to scratches, hence greater durability and longer lens life
|Good surface hardness
|Fewer colour fringes than plastic lenses with same refractive index
|Low dispersion, even with high refractive index
|No palpable edges in bifocal and trifocal lenses
|Good fusability of different materials
|Unproblematic disposal of by-products resulting from manufacturing process
|Good environmental compatibility of manufacturing process
|No deformation and therefore no impairment of optical properties at high temperatures
|High thermal resistance
|Equitint lenses and cemented segments possible, e. g. with different prismatic powers in near and distance portions
|Good cementing properties of the materials
|Plastic or organic lenses
|High refractive indices allow the production of thin lenses, even for higher prescriptions
|Range of refractive indices from n = 1.5 to n = 1.74
|Lightweight spectacles which are comfortable to wear
|Low density
|Very suitable for sports and children's spectacles
|High resistance to breakage
|Tinting using dipping process, irrespective of prescription, in whatever colour the wearer requires
|Extensive tinting possibilities
|Uniform darkening of plastic photochromic lenses, irrespective of power
|Incorporation of photochromic substances in lens surface
|No damage to the lens in welding or grinding work
|Very resistant to sparks
|A hard coating is necessary to achieve a similar hardness to that of glass lenses
|Low surface hardness
|Materials for glass lenses
|Examples of lenses in which used
|Mean refractive index nd
|Abbe number νe
|Crown glass
|ZEISS Single Vision Sph Mineral 1.5
|First glass material used for spectacle lenses
|Barium crown
|ZEISS Single Vision Sph Mineral 1.6
|Differs optically from crown glass: greater refraction with low colour despersion
|Heavy flint
|ZEISS Single Vision
- Sph Mineral 1.7
- Sph Mineral 1.8
- Sph Mineral 1.9
|High-index material for high prescriptions. Additives include titanium and lanthanum. In 1973 Schott received an award for being the first company to develope these lenses
|ZEISS Single Vision
- Sph Mineral 1.5 Umbramatic brown
- Sph Mineral 1.6 Umbramatic brown
|Addition of silver chloride and silver bromide produces the photochromic properties. A further additive is boric acid
|Barium flint
|ZEISS Bifocal Classic CT25 Mineral 1.6
|Segment materials for bifocal and trifocal


text:
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The Wurf Board is a highly supportive, lively, air-spring surface that encourages standing desk users to make continuous micro movements, which improve blood-flow so you can stand comfortably much longer. These subtle movements improve posture; strengthen feet, legs, core, and back; and raise alertness, focus, and productivity. Who doesn't want that throughout their workday?
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- Use with or without shoes (no stiletto heels).
- Fully adjustable air-spring surface, firm or bouncy, to meet your weight and performance needs. (Max. user, Sm: 200 lb, Med: 250 lb, Lg: 300 lb).
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The Wurf Board's drop-stitch construction is radically different from typical inflatable toys or air mattresses. High-end inflatable paddle boards are made using similar drop-stitch construction, but Wurf Boards are used on hard surfaces and not on the water, so we had to re-engineer our drop-stitch to achieve higher strength and durability. Equalizing the size, Wurf Boards are built better, but priced lower.
Many small business owners and work-at-home warriors such as myself pay added attention to the health aspects of our career ... Read More
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I love the energy that my standing desk gives me but I hate how my legs and joints start hurting. The Wurf Board has allowed ... Read More
Kerianne Leffew Director - Innovation Pavilion


text:
Now that feed content was being archived, the obvious
next step was to add a search engine to let you find stuff.
The search engine supports a powerful query syntax
that allows for quite advanced searches to be made. But the really neat thing
was the addition of search agents that monitor the incoming feed content
for things of interest and flag them when anything is found.
Other significant changes were the addition of native support for Atom feeds
and the use of Mozilla as the embedded browser.


text:
Mr G Mayes17 Feedback reviews, 100% positive
I have over 30 yrs experience in the building trade family established and hard working from start to finish. Friendly and reliable all work guaranteed to the highest standard as approved by norfolk county council. All aspects of the building trade from restoration old to...
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By hobbes_50 on 30th Jun, 2016
LMBC36 Feedback reviews, 100% positive
All General house maintenance,with quality work always guaranteed, competitive and reliable been in the trade for the last thirty years, good communication with straight talking advice, always leave the customer happy. Father and son team and we strive on the finish of our...
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By sam17264 on 3rd Nov, 2018
JNR Building and Maintenance LTD48 Feedback reviews, 100% positive
Julian has worked for big contractors as well as small builders in his local area and has been running his own business for the last 10 years. Although Julian's main trade is brickwork, he has a fully qualified team which can cope with all jobs big and small, whom you can...
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By gdm_98 on 10th Apr, 2018
Multi Trades Plus12 Feedback reviews, 100% positive
My name is Mark I have been in the building industry for over 24 years and my skills were passed down from my father and grandfather and other familey members who were also in the building industry with differant trades over the years I have worked and learnt every aspect of...
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By bernie1234 on 7th Oct, 2018
D.Usher Brickwork8 Feedback reviews, 100% positive
London trained bricklayer, 35 years experience, self-employed sole trader specializing in restoration, repair and rebuild to period properties. Knapped and cobble flint walls. Lime mortar pointing. Natural stone patios.
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By peter57_45 on 26th Jan, 2018
OAH CONSTRUCTION LTD6 Feedback reviews, 100% positive
We are a small team of builders who undertake small to medium size projects we deliver the highest possible standard of work to each and every customer.
Latest Bricklaying feedback review:
By gracie_18 on 12th Sep, 2018
Sam Brooks Bricklayer4 Feedback reviews, 100% positive
I am a hard working, reliable, friendly, bricklayer. I am passionate about my work and pride myself on achieving high quality results and positive feedback from customers.Ensuring the customer is completely satisfied with my work is my number one priority.
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By steve_gray_91 on 22nd Nov, 2017
mik994 Feedback reviews, 100% positive
Hi, my name is Michael Toland I am a time served Bricklayer. I have worked in the construction industry since 1981 soley as a bricklayer. I have worked on a variety of projects in this time including ,housing,commercial and private sector i.e extensions,porches that...
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By debbie_468 on 24th Nov, 2017
A Lansdale chimney specialist and builders3 Feedback reviews, 100% positive
Chimney repairs and rebuilding inc lead flashing new pots etc general building inc extensions walls paving drainage small roofing jobs fencing age 56 been in building for 40 years
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By andshi on 12th Nov, 2018
Daniel Shore Building Contractor4 Feedback reviews, 100% positive
My Name is Daniel Shore, I am a Norwich based building contractor operating in and around the Norwich area. I am reliable, trustworthy and committed to providing a high quality, customer focused construction service.
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By dysons_farm on 23rd Jun, 2015
Clover Construction3 Feedback reviews, 100% positive
I am a fully qualified Bricklayer with over 10 years' experience. Also specializing in Landscaping & Fencing. I am punctual and take great pride in my level of work and the quality of my finish. I am honest and reliable and will always take care when working in other...
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By bridget_heriz-smith on 5th Nov, 2018
AAW Building and Plastering19 Feedback reviews, 100% positive
AAW Building and Plastering offer free quotations and a friendly professional service. We will go the extra mile to give a completed job on time and how you want it done so please give us a try. No job too small.
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By pressman274 on 5th Aug, 2016
M C Webb Construction1 Feedback review, 100% positive
I have been in the building trade since 2006 when I left school and worked for my dads building firm until I left and went self employed in 2012 and then sub contracted to other building firms as well as my dads to gain even more knowledge and experience, then in 2017 I...
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By sukey on 28th Jul, 2018
q gardens landscaping18 Feedback reviews, 100% positive
Q-Gardens Landscaping which has been established in Norwich since 2006. We are designers and builders with a passion for putting our clients ideas into reality. Our aim is to make your garden a place to enjoy. Whatever your needs or inspirations, we will do our best to help...
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By dennis_967 on 9th Feb, 2017
T.W Brickwork2 Feedback reviews, 100% positive
Here at Tw brickwork I like to maintain a very friendly and professional approach. My name is tom and I'm a fully qualified bricklayer, Based in norwich. I take on a lot of work from small garden walls to extensions all over Norfolk. Can also carry out works such as patios...
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By mbull_52 on 2nd Nov, 2017
Need a tradesman?
Post a job on MyBuilder to find a quality, local tradesperson.
How MyBuilder works
1. Post a job
First, create a job listing for your bricklaying project. It's quick, easy and free - the first step to finding recommended bricklayers in NR27, Cromer.
2. Hire a tradesman
Having met our recommended bricklayers in NR27, Cromer and read customer reviews, you're ready to decide which bricklayers to hire.
3. Leave feedback
After your project is successfully completed, you can leave a review for your bricklayers. This review helps you and future MyBuilder users.
What our customers say
- "I have used one of the tradesman from the website. I found the site very useful and easy to use. Excellent site."
- Kevin Pearson
Tradesmen in NR27, Cromer
- Architectural Designers
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- Carpenters & Joiners
- Carpet Fitters
- Chimney & Fireplace Specialists
- Conservatory Installers
- Conversion Specialists
- Damp Proofing Specialists
- Demolition Contractors
- Driveway Pavers
- Electricians
- Extension Builders
- Fascias, Soffits and Guttering Specialists
- Fencers
- Flooring Fitters
- Gas Engineers
- Groundworkers
- Handymen
- Heating Engineers
- Insulation Installers
- Kitchen Fitters
- Landscape Gardeners
- Locksmiths
- Loft Conversion Specialists
- New Home Builders
- Painters & Decorators
- Plasterers
- Plumbers
- Restoration & Refurb Specialists
- Roofers
- Security System Installers
- Stonemasons
- Tilers
- Tree Surgeons
- Window Fitters
- All Tradesmen


text:
Mak Chamroeun, president of Khmer Youth Association, is the lone activist from Cambodia at the IMF-WB Annual Meetings in Tokyo, Japan. He chats with IPS Asia-Pacific TerraViva's Sam Rith about what he learned from the meetings.
TerraViva: What have you learned from these meetings?
Mak: What I learned most relates to the youth, the shortage jobs for youth that the leaders of IMF and World Bank are very interested in. I found that there are a lot of joblessness among the youth, and that there will be more cooperation to resolve the economic crisis, youth issues, and joblessness. I have listened to different guest speakers in different seminars during the IMF-World Bank meetings talk about how to resolve the joblessness of the youth. They said that SMEs play very important role (in this). I found out that the leaders of IMF and World Bank showed high commitment not (only to) reduce the poverty, but to end poverty.
TerraViva: What are the challenges that Cambodian youth face today?
Mak: Cambodian youth now are facing illiteracy, lack of education, lack of skills that the market requires. Not many of our youths now participate in implementing political, democracy, human rights and local governance. We have about 8 million youths, about 60 to 65 percent of the population. We do not have parliamentarians aged below 35. Each year, thousands of students graduate from schools and colleges but there is no working opportunity in their local areas. The other issue is that the poverty limits them from being able to get education, health treatment and other services. Drugs are still a problem.
TerraViva: Cambodia has been receiving a lot of aid from developed countries, World Bank, IMF and others after the civil war. How important will aid continue to be for the country?
Mak: We still need aid from outside because the government has not yet managed effectively to raise internal resources including natural resources, human resources and others.


text:
David Hall: In circulated grades, the 1916-S is the least rare of the 1913 to 1919 San Francisco Mint Buffalo nickels, and though it has a slightly lower mintage, it is not quite as scarce as the 1916-D. In mint state condition, it is also a little easier to find than the other S Mints of the era, but in Gem MS65 or better the 1916-S is quite rare. It is rarer in gem condition than the 1913-S Type 2, 1914-S, and 1915-S. The 1916-S can be found well struck, but they are some less than fully struck survivors. Luster is typically somewhat frosty and is usually excellent on higher grade mint state specimens.
© 1999-2018 Collectors Universe NASDAQ: CLCT


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Shaping the future of the sportscar – this is the theme of Strategy 2025. The company's main objective as part of this strategy is to achieve value-generating growth.Más información
For detailed information about facts and figures of Porsche AG please download the complete annual report in PDF format below.Más información
Although the roots of Porsche lie in Germany, the fascination sports car can be experienced throughout the world. Discover our six locations at a glance.Más información
Compliance at Porsche is everybody's business. Porsche does not tolerate any legal violations. Porsche employees, customers, business partners or other outside parties can report any tips of possible legal violations relating to Porsche to two ombudsmen.Más información
© 2018 Porsche Latin America, Inc. Indicaciones Legales.