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KELEBIHAN DAN KEKURANGAN LAMPU HID
Banyak sekali pengemudi mobil yang telah melengkapi mobil Toyotanya dengan lampu HID agar lebih terang maupun enak dipandang mat
Banyak sekali pengemudi mobil yang telah melengkapi mobil Toyotanya dengan lampu HID agar lebih terang maupun enak dipandang mata karena sorot cahayanya yang berwarna putih. Dan masih banyak juga yang masih binggung ataupun bimbang di dalam memilih HID yang tepat untuk mobilnya. Kali ini, kita akan membahas lebih dalam tentang bohlam HID beserta kelebihan dan kekurangan lampu HID itu sendiri agar tidak terjebak maupun ragu-ragu ketika memutuskan untuk menggunakan bohlam HID sebagai pilihan utama untuk penyinaran mobilnya.
Pengertian Lampu HID
HID sendiri telah memiliki kepanjangan, yaitu High Intensity Discharge atau yang lebih dikenal dengan lampu Xenon yang mampu untuk menghasilkan cahaya dengan tingkat intensitas yang tinggi alias lebih terang. Untuk tingkat keterangan warna dari lampu HID ditentukan oleh satuan derajat Kelvin (K) dan untuk menyalakan lampu HID diperlukan ballast, yang juga merupakan alat untuk menyediakan dan mengendalikan voltase lampu termasuk juga untuk dapat menstabilkan aliran listrik pada mobil.
Saat ini, sudah sangat banyak sekali lampu HID dengan berbagai merk atau tipe dengan kualitas yang berbeda-beda, produksi dan tentu saja berbeda harga. Karena banyak merk dan kualitas serta janji-janji yang telah ditawarkan, kita juga harus jeli di dalam memilih lampu HID untuk diaplikasikan pada kendaraan kita.
Untuk jenis atau tipe lampu HID yang beredar dipasaran, umumnya telah terdiri dari lampu-lampu model H1,H3,H4,H7,H8,H11,HB3,HB4. Yang telah membedakan antara kode H tersebut adalah pada kedudukan bohlamnya di headlamp mobil kita, sedangkan untuk ballast dapat dikatakan sama semuanya bentuknya (Ingat, sama bentuk belum tentu sama kualitasnya) Model yang paling umum beredar di Indonesia adalah tipe H4 dimana antara lampu jauh dengan lampu dekat menjadi satu.
Warna Cahaya Lampu HID
Lampu HID telah memiliki beberapa tingkatan warna yang dihasilkan berdasarkan perbedaan Kelvin, dan berikut ini adalah daftar warna Lampu HID yang terdapat di pasaran :
3.500 K mengeluarkan warna Kuning seperti bohlam lampu standart mobil
4.300 K / 5.000 K mengeluarkan warna putih kekuning-kuning an
6.000 K / 6.500 K mengeluarkan warna Putih
8.000 K/ 8.500 K mengeluarkan warna Putih kebiru-biru an
10.000 K mengeluarkan warna Biru agak keungu-ungu an
12.700 K mengeluarkan warna Ungu
15.000 K mengeluarkan warna Pink
Warna lampu HID mobil
Warna Lampu HID
Dari daftar warna di atas, kita juga dapat mengetahui bahwa semakin tinggi Kelvin maka akan mengalami gradasi warna menuju kebiru-biruan ataupun ungu. Hal yang paling penting untuk diingat adalah ketika pemasangan lampu HID selalu pastikan bahwa lampu yang terpasang adalah dengan ukuran 35 watt, jangan memasang yang 50 watt (tidak compatible) karena akan membuat mika head lamp menjadi cepat kuning akibat panas yang berlebihan.
Kelebihan dan Kelemahan lampu HID
Apabila membahas penggunaan lampu HID, maka kelebihan yang telah ditawarkan dari lampu ini (menurut saya) adalah gaya. Tentu sangat enak dilihat ketika melihat cahaya lampu putih yang keluar dari head lamp mobil TETAPI hal ini seringkali menyengsarakan saya sebagai pengemudi ketika di depan mobil yang menggunakan lampu HID.
Pilihan yang paling tepat di dalam menggunakan lampu HID adalah yang 4.300 K, dimana Toyota Fortuner, Alphard maupun mobil premium Toyota lainnya juga sudah menggunakan lampu HID sebagai standart bawaan mobil. Dan batas tolerir yang masih saya anggap menguntungkan adalah pemakaian lampu HID 5.000 / 5.300 K, dimana cahaya yang dikeluarkan masih putih kekuning-kuningan.
Kelemahan lampu HID juga sangat terlihat untuk lampu HID diatas 5.300 Kelvin tentu saja lampu HID yang dipasang lebih diperuntukan untuk mobil-mobil show off ataupun pameran karena cahaya lampu yang dihasilkan tidak dapat menembus hujan maupun kabut. Hal ini tentu saja telah menyusahkan pengemudi yang memiliki mobilitas tinggi di luar-luar daerah. Dari segi fungsional, lampu-lampu HID yang berada di atas 5.300 K seringkali membuat pengemudi mengeluhkan bahwa sorot cahaya lampunya sama sekali tidak membantu di tengah malam berkabut ataupun hujan sekalipun, dan hal ini juga sangat membahayakan kita sebagai pengendara mobil.
Pertanyaan yang paling sering diajukan kepada saya adalah, " Merk apa yang bagus untuk lampu HID ?"
Jujur, penilaian yang bisa saya berikan tentu saja, "ada harga tentu ada kualitas."Setelah mencoba-coba berbagai macam HID dan mencari fakta tentang lampu HID yang beredar di pasaran, ternyata hampir sebagian besar HID adalah produk China dengan embel-embel lisensi negara-negara maju seperti german, usa, dll.
Yang telah membedakan produk mahal dan murah adalah kualitas ballast dan kualitas bohlam lampu HID itu sendiri. Produk yang terlampau murah seringkali ballast cepat mengalami kerusakan sehingga lampu HID mati dalam waktu dekat, memang semua HID rata-rata telah memberikan garansi tetapi bila mengalami mati lampu di malam hari dan harus bolak balik untuk klaim pemasangan, bukankah itu merepotkan ? Kualitas bohlam juga mempengaruhi karena seringkali lampu HID berubah derajat Kelvin nya setelah pemakaian dalam beberapa bulan sehingga cahaya yang dikeluarkan oleh lampu HID menjadi tidak sama dengan pemasangan pertama kali.
Setelah membahas kelemahan dan kelebihan lampu HID, semoga teman-teman sekalian tidak merasa kebinggungan di dalam menentukan apakah perlu menggunakan HID atau tidak, dan lampu HID apa yang sebaiknya digunakan di mobil toyota kesayangannya. Sebenarnya pemasangan aksesoris pada mobil baru yang kita miliki menyebabkan beberapa kekurangan yang mungkin saja dapat berakibat fatal. (baca : kekurangan aksesoris mobil baru)
MOBIL SEDANG COROLLA DX RETRO
mobil sedan corolla dx retro sekarang ini sedang booming dan menjadi trend di beberapa kota besar di indonesia, silahkan perhati
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Ghostly Voices From Thomas Edisonís Dolls Can Now Be Heard
Though Robin and Joan Rolfs owned two rare talking dolls manufactured by Thomas Edison’s phonograph company in 1890, they did not dare play the wax cylinder records tucked inside each one.
The Rolfses, longtime collectors of Edison phonographs, knew that if they turned the cranks on the dolls’ backs, the steel phonograph needle might damage or destroy the grooves of the hollow, ring-shaped cylinder. And so for years, the dolls sat side by side inside a display cabinet, bearers of a message from the dawn of sound recording that nobody could hear.
In 1890, Edison’s dolls were a flop; production lasted only six weeks. Children found them difficult to operate and more scary than cuddly. The recordings inside, which featured snippets of nursery rhymes, wore out quickly.
Yet sound historians say the cylinders were the first entertainment records ever made, and the young girls hired to recite the rhymes were the world’s first recording artists.
Year after year, the Rolfses asked experts if there might be a safe way to play the recordings. Then a government laboratory developed a method to play fragile records without touching them.
The technique relies on a microscope to create images of the grooves in exquisite detail. A computer approximates — with great accuracy — the sounds that would have been created by a needle moving through those grooves.
In 2014, the technology was made available for the first time outside the laboratory.
“The fear all along is that we don’t want to damage these records. We don’t want to put a stylus on them,” said Jerry Fabris, the curator of the Thomas Edison Historical Park in West Orange, N.J. “Now we have the technology to play them safely.”
Last month, the Historical Park posted online three never-before-heard Edison doll recordings, including the two from the Rolfses’ collection. “There are probably more out there, and we’re hoping people will now get them digitized,” Mr. Fabris said.
The technology, which is known as Irene (Image, Reconstruct, Erase Noise, Etc.), was developed by the particle physicist Carl Haber and the engineer Earl Cornell at Lawrence Berkeley. Irene extracts sound from cylinder and disk records. It can also reconstruct audio from recordings so badly damaged they were deemed unplayable.
“We are now hearing sounds from history that I did not expect to hear in my lifetime,” Mr. Fabris said.
The Rolfses said they were not sure what to expect in August when they carefully packed their two Edison doll cylinders, still attached to their motors, and drove from their home in Hortonville, Wis., to the National Document Conservation Center in Andover, Mass. The center had recently acquired Irene technology.
Cylinders carry sound in a spiral groove cut by a phonograph recording needle that vibrates up and down, creating a surface made of tiny hills and valleys. In the Irene set-up, a microscope perched above the shaft takes thousands of high-resolution images of small sections of the grooves.
Stitched together, the images provide a topographic map of the cylinder’s surface, charting changes in depth as small as one five-hundredth the thickness of a human hair. Pitch, volume and timbre are all encoded in the hills and valleys and the speed at which the record is played.
At the conservation center, the preservation specialist Mason Vander Lugt attached one of the cylinders to the end of a rotating shaft. Huddled around a computer screen, the Rolfses first saw the wiggly waveform generated by Irene. Then came the digital audio. The words were at first indistinct, but as Mr. Lugt filtered out more of the noise, the rhyme became clearer.
Recently, the conservation center turned up another surprise.
In 2010, the Woody Guthrie Foundation received 18 oversize phonograph disks from an anonymous donor. No one knew if any of the dirt-stained recordings featured Guthrie, but Tiffany Colannino, then the foundation’s archivist, had stored them unplayed until she heard about Irene.
Last fall, the center extracted audio from one of the records, labeled “Jam Session 9” and emailed the digital file to Ms. Colannino.
“I was just sitting in my dining room, and the next thing I know, I’m hearing Woody,” she said. In between solo performances of “Ladies Auxiliary,” “Jesus Christ,” and “Dead or Alive,” Guthrie tells jokes, offers some back story, and makes the audience laugh. “It is quintessential Guthrie,” Ms. Colannino said.
The Rolfses’ dolls are back in the display cabinet in Wisconsin. But with audio stored on several computers, they now have a permanent voice.
But an unusual assortment of players, including furniture makers, the Chinese government, Republicans from states with a large base of furniture manufacturing and even some Democrats who championed early regulatory efforts, have questioned the E.P.A. proposal. The sustained opposition has held sway, as the agency is now preparing to ease key testing requirements before it releases the landmark federal health standard.
The E.P.A.’s five-year effort to adopt this rule offers another example of how industry opposition can delay and hamper attempts by the federal government to issue regulations, even to control substances known to be harmful to human health.
Formaldehyde is a known carcinogen that can also cause respiratory ailments like asthma, but the potential of long-term exposure to cause cancers like myeloid leukemia is less well understood.
The E.P.A.’s decision would be the first time that the federal government has regulated formaldehyde inside most American homes.
“The stakes are high for public health,” said Tom Neltner, senior adviser for regulatory affairs at the National Center for Healthy Housing, who has closely monitored the debate over the rules. “What we can’t have here is an outcome that fails to confront the health threat we all know exists.”
The proposal would not ban formaldehyde — commonly used as an ingredient in wood glue in furniture and flooring — but it would impose rules that prevent dangerous levels of the chemical’s vapors from those products, and would set testing standards to ensure that products sold in the United States comply with those limits. The debate has sharpened in the face of growing concern about the safety of formaldehyde-treated flooring imported from Asia, especially China.
What is certain is that a lot of money is at stake: American companies sell billions of dollars’ worth of wood products each year that contain formaldehyde, and some argue that the proposed regulation would impose unfair costs and restrictions.
Determined to block the agency’s rule as proposed, these industry players have turned to the White House, members of Congress and top E.P.A. officials, pressing them to roll back the testing requirements in particular, calling them redundant and too expensive.
“There are potentially over a million manufacturing jobs that will be impacted if the proposed rule is finalized without changes,” wrote Bill Perdue, the chief lobbyist at the American Home Furnishings Alliance, a leading critic of the testing requirements in the proposed regulation, in one letter to the E.P.A.
Industry opposition helped create an odd alignment of forces working to thwart the rule. The White House moved to strike out key aspects of the proposal. Subsequent appeals for more changes were voiced by players as varied as Senator Barbara Boxer, Democrat of California, and Senator Roger Wicker, Republican of Mississippi, as well as furniture industry lobbyists.
Hurricane Katrina in 2005 helped ignite the public debate over formaldehyde, after the deadly storm destroyed or damaged hundreds of thousands of homes along the Gulf of Mexico, forcing families into temporary trailers provided by the Federal Emergency Management Agency.
The displaced storm victims quickly began reporting respiratory problems, burning eyes and other issues, and tests then confirmed high levels of formaldehyde fumes leaking into the air inside the trailers, which in many cases had been hastily constructed.
Public health advocates petitioned the E.P.A. to issue limits on formaldehyde in building materials and furniture used in homes, given that limits already existed for exposure in workplaces. But three years after the storm, only California had issued such limits.
Industry groups like the American Chemistry Council have repeatedly challenged the science linking formaldehyde to cancer, a position championed by David Vitter, the Republican senator from Louisiana, who is a major recipient of chemical industry campaign contributions, and whom environmental groups have mockingly nicknamed “Senator Formaldehyde.”
By 2010, public health advocates and some industry groups secured bipartisan support in Congress for legislation that ordered the E.P.A. to issue federal rules that largely mirrored California’s restrictions. At the time, concerns were rising over the growing number of lower-priced furniture imports from Asia that might include contaminated products, while also hurting sales of American-made products.
Maneuvering began almost immediately after the E.P.A. prepared draft rules to formally enact the new standards.
White House records show at least five meetings in mid-2012 with industry executives — kitchen cabinet makers, chemical manufacturers, furniture trade associations and their lobbyists, like Brock R. Landry, of the Venable law firm. These parties, along with Senator Vitter’s office, appealed to top administration officials, asking them to intervene to roll back the E.P.A. proposal.
The White House Office of Management and Budget, which reviews major federal regulations before they are adopted, apparently agreed. After the White House review, the E.P.A. “redlined” many of the estimates of the monetary benefits that would be gained by reductions in related health ailments, like asthma and fertility issues, documents reviewed by The New York Times show.
As a result, the estimated benefit of the proposed rule dropped to $48 million a year, from as much as $278 million a year. The much-reduced amount deeply weakened the agency’s justification for the sometimes costly new testing that would be required under the new rules, a federal official involved in the effort said.
“It’s a redlining blood bath,” said Lisa Heinzerling, a Georgetown University Law School professor and a former E.P.A. official, using the Washington phrase to describe when language is stricken from a proposed rule. “Almost the entire discussion of these potential benefits was excised.”
“That’s a huge difference,” said Luke Bolar, a spokesman for Mr. Vitter, of the reduced estimated financial benefits, saying the change was “clearly highlighting more mismanagement” at the E.P.A.
The review’s outcome galvanized opponents in the furniture industry. They then targeted a provision that mandated new testing of laminated wood, a cheaper alternative to hardwood. (The California standard on which the law was based did not require such testing.)
But E.P.A. scientists had concluded that these laminate products — millions of which are sold annually in the United States — posed a particular risk. They said that when thin layers of wood, also known as laminate or veneer, are added to furniture or flooring in the final stages of manufacturing, the resulting product can generate dangerous levels of fumes from often-used formaldehyde-based glues.
Industry executives, outraged by what they considered an unnecessary and financially burdensome level of testing, turned every lever within reach to get the requirement removed. It would be particularly onerous, they argued, for small manufacturers that would have to repeatedly interrupt their work to do expensive new testing. The E.P.A. estimated that the expanded requirements for laminate products would cost the furniture industry tens of millions of dollars annually, while the industry said that the proposed rule over all would cost its 7,000 American manufacturing facilities over $200 million each year.
“A lot of people don’t seem to appreciate what a lot of these requirements do to a small operation,” said Dick Titus, executive vice president of the Kitchen Cabinet Manufacturers Association, whose members are predominantly small businesses. “A 10-person shop, for example, just really isn’t equipped to handle that type of thing.”
Big industry players also weighed in. Executives from companies including La-Z-Boy, Hooker Furniture and Ashley Furniture all flew to Washington for a series of meetings with the offices of lawmakers including House Speaker John Boehner, Republican of Ohio, and about a dozen other lawmakers, asking several of them to sign a letter prepared by the industry to press the E.P.A. to back down, according to an industry report describing the lobbying visit.
The industry lobbyists also held their own meeting at E.P.A. headquarters, and they urged Jim Jones, who oversaw the rule-making process as the assistant administrator for the agency’s Office of Chemical Safety and Pollution Prevention, to visit a North Carolina furniture manufacturing plant. According to the trade group, Mr. Jones told them that the visit had “helped the agency shift its thinking” about the rules and how laminated products should be treated.
The resistance was particularly intense from lawmakers like Mr. Wicker of Mississippi, whose state is home to major manufacturing plants owned by Ashley Furniture Industries, the world’s largest furniture maker, and who is one of the biggest recipients in Congress of donations from the industry’s trade association. Asked if the political support played a role, a spokesman for Mr. Wicker replied: “Thousands of Mississippians depend on the furniture manufacturing industry for their livelihoods. Senator Wicker is committed to defending all Mississippians from government overreach.”
Individual companies like Ikea also intervened, as did the Chinese government, which claimed that the new rule would create a “great barrier” to the import of Chinese products because of higher costs.
Perhaps the most surprising objection came from Senator Boxer, of California, a longtime environmental advocate, whose office questioned why the E.P.A.’s rule went further than her home state’s in seeking testing on laminated products. “We did not advocate an outcome, other than safety,” her office said in a statement about why the senator raised concerns. “We said ‘Take a look to see if you have it right.’ ”
Safety advocates say that tighter restrictions — like the ones Ms. Boxer and Mr. Wicker, along with Representative Doris Matsui, a California Democrat, have questioned — are necessary, particularly for products coming from China, where items as varied as toys and Christmas lights have been found to violate American safety standards.
While Mr. Neltner, the environmental advocate who has been most involved in the review process, has been open to compromise, he has pressed the E.P.A. not to back down entirely, and to maintain a requirement that laminators verify that their products are safe.
An episode of CBS’s “60 Minutes” in March brought attention to the issue when it accused Lumber Liquidators, the discount flooring retailer, of selling laminate products with dangerous levels of formaldehyde. The company has disputed the show’s findings and test methods, maintaining that its products are safe.
“People think that just because Congress passed the legislation five years ago, the problem has been fixed,” said Becky Gillette, who then lived in coastal Mississippi, in the area hit by Hurricane Katrina, and was among the first to notice a pattern of complaints from people living in the trailers. “Real people’s faces and names come up in front of me when I think of the thousands of people who could get sick if this rule is not done right.”
An aide to Ms. Matsui rejected any suggestion that she was bending to industry pressure.
“From the beginning the public health has been our No. 1 concern,” said Kyle J. Victor, an aide to Ms. Matsui.
But further changes to the rule are likely, agency officials concede, as they say they are searching for a way to reduce the cost of complying with any final rule while maintaining public health goals. The question is just how radically the agency will revamp the testing requirement for laminated products — if it keeps it at all.
“It’s not a secret to anybody that is the most challenging issue,” said Mr. Jones, the E.P.A. official overseeing the process, adding that the health consequences from formaldehyde are real. “We have to reduce those exposures so that people can live healthy lives and not have to worry about being in their homes.”