noise absorption material News

  • New tool to assess sustainability of transport noise reduction devices

    A new method of assessing the sustainability of noise reduction devices (NRDs) used in transport infrastructure, such as noise barriers or absorptive claddings, is presented in a recent study. The new set of specially designed sustainability criteria allows NRDs to be easily and accurately evaluated, its developers suggest. Noise reduction is a key part of the European Commission’s ...

  • Protecting Workers from Hearing Lose Due to Excessive Noise Levels

    Worker exposure to environmental noise is sometimes difficult to avoid. However, understanding noise levels employees are exposed to is not difficult. The most significant effect of high noise levels is permanent hearing loss. Hearing loss and the degree of loss are directly related to the total energy impacting the ears. Often, the total energy at a noise source cannot be changed. In these ...


    By Clark Seif Clark Inc.

  • EA: Four new materials set for quality protocols project

    The Environment Agency has announced the four new materials that will form part of its Quality Protocols project which aims to define end-of-waste criteria for waste streams. The four materials are the following: Treated ash from the incineration of poultry litter, feathers and straw, which can be re-used as a fertiliser, substituting inorganic fertilisers; Non-virgin wood from ...

  • Green walls, effective acoustic insulation

    The Department of Thermal Machines and Motors of the University School of Mining and Public Works Engineering is exploring the energy efficiency of buildings by conducting tests on various materials. Zaloa Azkorra, an agricultural engineer, began to study the acoustic and energy efficiency of green walls to find out their performance, since these walls consisting of vegetation could be beneficial ...

  • ASTM E336 - 11 standard test method for measurement of airborne sound attenuation between rooms in buildings

    The main part of this standard uses procedures originally developed for laboratory measurements of the transmission loss of partitions. These procedures assume that the rooms in which the measurements are made have a sound field that reasonably approximates a diffuse field. Sound pressure levels in such rooms are reasonably uniform throughout the ...


    By ASTM International

  • PULSE 21 is here - New software and applications, with focus on performance

    The latest release of PULSE includes new software and applications for a range of industries, and enhancements in PULSE Reflex and LabShop. In this release, we have focused on performance, because speed and stability is key when measuring and analyzing data. Structural dynamics PULSE Reflex Stepped Sine Measurements ...

  • Air Compliance Testing Now Offers FTIR

    Commonly referred to as FTIR, Fourier Transform Infrared Spectroscopy is the most recent addition to the Air Compliance Testing technological toolbox. FTIR can be used to identify chemicals from paints, polymers, coatings, spills, drugs, and contaminants (qualitative analysis). FTIR is likely the most powerful tool for identifying types of chemical bonds (functional groups). The wavelength of ...

  • ASTM E1179 - 11 Standard Specification for Sound Sources Used for Testing Open Office Components and Systems

    This specification states the requirements for sound sources used for measuring the speech privacy between open offices or for measuring the laboratory performance of acoustical components. The sound source shall be a loudspeaker enclosed in a box that has a maximum dimension of 0.30 m (1 ft) on a side, to reduce spurious sound reflections. The measurements shall be carried out in a free ...


    By ASTM International

  • Combined manhole insert for odor control and inflow protectors

    Combined Manhole Inserts for Odor Control and Inflow Protectors in Boroughs, Towns and Cities are a must in today’s GREEN World. Nearly all municipalities suffer with odor problems from Manholes and Inflow to manholes. During dry weather Manholes can be the source of vile sewer odors. The main odor culprit is Hydrogen Sulfide (H2S), but other malodorous compounds are present, as well. ...


    By Pennington Equipment Company

  • Innovations `made in Aerzen`

    In 1987, with the three-lobe blowers, AERZEN introduced an important new product. These patented blowers for conveying large volumes of air, beginning at 3,000 cubic metres intake volume per hour, worked with a controlled pre-inlet particularly well in the low frequency range - they were quiet and operated with little vibrations. This allowed a considerable reduction in the sound absorption ...

  • New possibilities in the generation of process air

    The compression of air and neutral gases is very energy-intensive. Today, the generation of process air covers a major part of the energy costs for pneumatic applications or for the municipal and industrial waste water treatment. It is more important than ever for the plant operators to select the right compressor or blower for their process. The comprehensive product range of the rotary lobe ...

  • PERKINELMER UNVEILS NEW ANALYTICAL SOLUTIONS AT PITTCON 2006 TO DRIVE INNOVATION, PRECISION AND RELIABILITY

    Showcases “Smart Thinking” to Help Customers Overcome Complex Challenges ORLANDO, Fla. – PerkinElmer Inc. (NYSE: PKI), a global leader in Health Sciences and Photonics, today announced new application-based laboratory solutions and product enhancements for the environmental, pharmaceutical, materials and academic research market segments at PITTCON® 2006, March 13-15, Booth 2669. ...


    By PerkinElmer, Inc.

  • Biofuels studies to benefit from better lab test

    Thank sunlight, algae and green plants for the air we breathe, the food we eat and, in the not-too-distant future, the fuels that power our trips by plane, rail and automobile. In a process that is as complex as it is elegant, as breathtaking as it is breath-making, sunlight excites electrons in plant cells setting off a chain reaction that rips apart water to release oxygen and then changes ...

  • ZYD transformer oil purifier, oil purification, oil filtration, oil recycling machine

    ZYD transformer oil purifier, oil purification, oil filtration, oil recycling machine is widely used for the power plant, power station, power company, metallury, petrifaction, mechanism, transportation, railway and other industry. It is very suitable for the large electric & insulation equipments and the country main transformers over 110KV, especially in high-lititude areas which more than ...


  • Intelligent solutions for air quality

    International Trade Fair for Waste Management and Environmental Technology presents technologies and processes for the challenges of national and international air pollution control Acid rain, the death of forests and fishes, a hole in the ozone layer in the stratosphere above the North and South Poles, and an increased risk of skin cancer, mutations, global warming and climate ...


    By Koelnmesse GmbH

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