Jeffrey Lux's List: Science

molecular science

splash wind energy wind mill alternative energy

paint

台灣塗料網

heat prevent floor

汽車烤漆防護膜 汽車隔熱紙 龍膜隔熱紙

晶馨减肥胶囊

DING ZING TPU薄膜
DINTEX® 防水透濕膜

DZ TPU 氣動管
DING ZING TPU薄膜,環保,具極佳的特性,耐水解性,
抗紫外線性, 耐化學性, 耐油性及耐候性, 彈性佳, 強
度高

TPU 聚酯系列 Polyurethane Polyester

TPU 聚醚系列 Polyurethane Polyether

熱熔膠膜系列

鞋材應用系列

不黃變系列

醫療級透濕膜

防彈玻璃用膜

TPU 發泡系列

DINDEX 鬆緊帶系列

薄膜花紋系列

DING ZING薄膜中國大陸總代理

DINTEX® 防水透濕薄膜,環保,極佳的透濕度, 10000mmH2O
以上的防水度,彈性佳,強度高,無微多孔型薄膜的缺點


高透濕薄膜系列

中透濕薄膜系列

低透濕薄膜系列

COLORS 系列

PRINTING 系列


DZ氣動管擁有最佳的彈性, 質輕, 耐用的特性;
以及多種優異的功能性和機械性, 仍不影響其
環保性能

DZ 機械專用氣動管

DZ 泛用氣動管

DZ 氣動捲管

DZ 氣動夾紗管

DZ 氣動夾紗捲管

DZ 雙孔夾紗氣動管

DZ 多孔管

DZ 扁狀管



DZ 聚胺酯圓帶, 三角帶, 五角帶

DZ 密封件

DZ 防塵密封件
DZ 聚胺酯圓帶, 三角帶, 五角帶提供了機械性能,
物理性能和化學性能的獨特結合, 特性包括極高的
拉力強度, 優秀的耐磨擦損耗及耐衝擊性,
另有優異的柔軟度


DZ 粗面圓帶

DZ 光面圓帶

DZ V型輸送帶

DZ 三角,五角,六角輸送帶

DZ 密封件具有極佳的拉力強度及壓縮變形率和抗油性,
更重要的是產品有很長的使用期限, 適合應用在輕度,
中度, 重度負荷量的油壓缸

華裔教授 打破百年物理定律
【聯合報╱本報系記者唐嘉麗／波士頓31日報導】

2009.08.02 04:44 am


※更多新聞請看udn共享書籤／
打破Plank的定律：物體極接近，熱傳導會大增

麻省理工學院（MIT）30日宣布，該校動力工程學華裔教授陳剛與其團隊的研究，首次打破「黑體輻射定律」公式，證實物體極接近的熱力傳導，可以高到定律所預測的千倍。研究報告將在8月號「NanoLetter」雜誌上發表。

德國物理學家普朗克1900年創「黑體輻射定律」（blackbody radiation law），公認是物體間熱力傳導基本法則，雖有人懷疑定律在兩物體極接近時不成立，但始終無法證明。

「黑體幅射定律」創定在不同溫度下，在絕大多數情況下都成立，但在極微小距離中穩定控制物體以測試能量傳導，極為困難。百多年來，科學家始終無法突破。普朗克本人對此定律在微距物體間是否仍成立，亦無把握。

陳剛出身中國華中科技大學、柏克萊加州大學，是知名奈米熱電材料和流體學者。他的團隊採用方位較易控制的小玻璃珠對著平面物體的方式，取代在奈米（10億分之一米）距離中根本不可能不碰觸的兩平行平面體；並採用雙金屬臂樑（bi-metallic cantilever）科技的原子能動力顯微鏡，精準測量兩物體間溫度變化。

MIT表示，陳剛團隊證實了科學家所預言但無法實證的理論，獲國際間同領域學者喝采。不但讓人們對基本物理有進一步了解，對改良電腦資料儲存用的硬碟的「記錄頭」（recording head），以及發展儲聚能源的新設計等工業應用上十分重要。

陳剛說，目前電腦使用的硬碟，記錄頭與硬碟表面約有5、6奈米距離，記錄頭容易發熱，而研究員一直在尋找控制熱力的方法。熱力傳導和控制是磁力儲存（magnetic storage）領域十分重要的一環，此類應用也將因陳剛的發現而迅速發展。新的發現還有助於開發新一代能源轉換裝置，陳剛說，此研究也提供對基本物理進一步了解。

【2009/08/02 聯合報】@ http://udn.com/

Breakdown In Planck's Law: Bringing Objects Close Together Can Boost Radiation Heat Transfer

ScienceDaily (July 31, 2009) — A well-established physical law describes the transfer of heat between two objects, but some physicists have long predicted that the law should break down when the objects are very close together. Scientists had never been able to confirm, or measure, this breakdown in practice. For the first time, however, MIT researchers have achieved this feat, and determined that the heat transfer can be 1,000 times greater than the law predicts.
See also:
Matter & Energy

* Thermodynamics
* Energy Technology
* Physics
* Solar Energy
* Nanotechnology
* Materials Science

Reference

* Black body
* Electromagnetic spectrum
* Laws of thermodynamics
* Heat

The new findings could lead to significant new applications, including better design of the recording heads of the hard disks used for computer data storage, and new kinds of devices for harvesting energy from heat that would otherwise be wasted.

Planck's blackbody radiation law, formulated in 1900 by German physicist Max Planck, describes how energy is dissipated, in the form of different wavelengths of radiation, from an idealized non-reflective black object, called a blackbody. The law says that the relative thermal emission of radiation at different wavelengths follows a precise pattern that varies according to the temperature of the object. The emission from a blackbody is usually considered as the maximum that an object can radiate.

The law works reliably in most cases, but Planck himself had suggested that when objects are very close together, the predictions of his law would break down. But actually controlling objects to maintain the tiny separations required to demonstrate this phenomenon has proved incredibly difficult.

"Planck was very careful, saying his theory was only valid for large systems," explains Gang Chen, MIT's Carl Richard Soderberg Professor of Power Engineering and director of the Pappa

Whenever an Eee PC roadmap leaks out, it's generally followed by a torrent of new machines that are just marginally different than the ones before. Granted, we've got Microsoft to thank for that, but it's still getting tougher by the day to keep all of these things from running together. Shortly after having a peek at the supposedly upcoming Eee PC 1201n comes this -- a smattering of hands-on shots of the purported Eee PC 1001HA. Slated to be available with Linux, Windows XP or no OS at all (saywha?), this here Eee could very well slot into the Seashell lineup given that bold pattern lathered on the chassis. Internally, you'll find the tired Atom N270, 1GB of RAM, a 160GB hard drive and an ExpressCard-to-Zzzzzzz adapter. But hey, at least that 3-cell battery means you'll be computing for days on end, right?

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LG BL40 Chocolate now shipping in the UK

by Chris Ziegler posted Sep 20th 2009 at 11:35PM
LG's making good on its promise to ship the stunning BL40 in Europe this month, pairing up with Carphone Warehouse and its mobiles.co.uk division to offer the latest Chocolate through your choice of O2 or Orange. Pricing ranges from £19.99 all the way up to £129.99 ($33 to $211) depending on carrier and plan, but any way you roll, you're guaranteed to end with with one of the longest phones -- it's got a 21:9 display, after all -- that money can buy.

[Via Cell Phone Reviews, thanks poison_ivy]

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Is this Sony Ericsson's Android-powered XPERIA X3?

by Darren Murph posted Sep 20th 2009 at 10:55PM

As always, Mr. Blurrycam isn't doing us any favors here, but we're cautiously optimistic that the image you see above is o

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MyPhones Protect the Virgin Ears—But Not Innocence—of Our Youth
Headphone-related hearing loss is no joke, which is probably why these MyPhones from Griffin Technology top out at 85dB. Little Tommy can still melt his face off to Death Metal, sure, but his tiny eardrums will be safe and sound. More »
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Comment by jessedybka: These make so much more sense than volume-capping at the player. 85 db at the ear is a safe range,... more » | Other threads
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Windows Mobile
Leaked Release List Details AT&T Windows Mobile Phones
One of BGR's "ninja tipsters" has graced that site with a roadmap of AT&T's Windows Mobile phones for the remainder of 2009. Topping the list is a business class duo consisting of the LG Monaco and HP Obsidian. More »
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"Swine flu, space interest scientists most in 2009
Updated 1d 5h ago | Comments 27 | Recommend 5 E-mail | Save | Print | Reprints & Permissions | Subscribe to stories like this
Hailey Morris, 2, of Middletown, Pa., is given the H1N1 nasal spray vaccine by Stephanie Gellatly with the Department of Health as she is held by her mother Brandi Nissley at the Dauphin County State Health Center in Harrisburg, Pa., Friday, Nov. 20, 2009.
Enlarge image Enlarge By Carolyn Kaster, AP
Hailey Morris, 2, of Middletown, Pa., is given the H1N1 nasal spray vaccine by Stephanie Gellatly with the Department of Health as she is held by her mother Brandi Nissley at the Dauphin County State Health Center in Harrisburg, Pa., Friday, Nov. 20, 2009.
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By Dan Vergano, USA TODAY
Science marches on, sometimes with headlines and awards, but most often with little fanfare.

A look at the year's most-cited papers in science, ones that scientists themselves referenced in their own work, for example, finds studies that did and didn't make any "Top Ten" lists.

"What scientists themselves are interested in often differs a good bit from the public's interests," says analyst David Pendlebury of Thomson Reuters, the international specialty information firm. "Often the stories that really matter in science are the ones still unfolding."

As part of