most stringentemission requirements fornewly registered vehicles and high quality motor [...] legco.gov.hk legco.gov.hk 為了控制汽車所造成的空氣污染,政府的政策是對新登記車輛的廢氣排放實施最嚴格的規管,以及採用可供應本港使用的優質燃 料。
A summary of criteria and noise emission testing requirements for ISS and SSP spaceflight hardware has been presented. Methods of evaluating test spaces have also been described. A rudimentary equation for assessing the bias introduced by acoustic reflections has been presented in order to facilitate ...
A uniform technique to compute measurement uncertainty of powerline and radiated emission (EMI) tests is presented. This method recommends frequency sampling, traceability to "true values", identifies systemic factors, and lists realisti... ER Heise,REW Heise - IEEE Emc Symposium 被引量: 0发表:...
An LED (Light-Emitting Diode) lamp is a lighting device made using the principle of light emission from semiconductor materials. Compared with traditional lighting technologies (such as incandescent lamps, fluorescent lamps, etc.), LED lamps have higher energy efficiency, longer service life, and be...
X-ray fluorescence: X-rays are used to excite the elements in the galvanized layer and measure the fluorescence intensity of their emission to determine the thickness. The advantage is that it is suitable for a variety of substrates; The disadvantage is the high cost of equipment. ...
Spaceflight hardware intended for use on the International Space Station or Space Shuttle must be tested for noise emission in accordance with NASA directives to meet stringent requirements. NASA directives covering verification of acoustic noise provide explicit testing requirements and guidance regarding ve...
and that rely on negative emission technologies to compensate for higher cumulative emissions (Fig.3and Supplementary Fig.6). Contrary to previous concerns about emissions associated with a transition to renewable energy increasing emissions in the short run, we identify a longer-term problem in pathw...
a. ANSI/UL 2201 – Standard for Carbon Monoxide (CO) Emission Rate of Portable Generators b. ANSI/PGMA G300-2018 – Safety and Performance of Portable Generators If you sell portable power inverters, your products should comply with either of the following UL standards: ...
Although the new green fuels are carbon-neutral, they are not emission-free. Therefore, the entire environmental impact must be recognized. Life cycle analysis (LCA) of products and services With an With anLCA, you can document and account for the environmental impacts of your product or servic...
the cells were incubated for 3 h with fresh culture medium supplemented with 10% AB staining solution, and the fluorescence signal of AB was detected on a microplate reader (FLUOstar OPTIMA, excitation 530 nm, emission 590 nm). Four reading replicates were prepared from each sample for the fl...