Silencers Articles

  • The silence of the lambs - Case study

    Helicopters and aircraft In this particular area there were quite a few helicopters and aircraft and these were picked up by the Invictus. “You find these days that developers are being asked for more and more studies or evidence over issues such as environmental noise, particularly in rural locations. Some would seem almost comical but it is becoming more the norm to meet planning ...


    By Cirrus Research plc

  • Bespoke noise protection: AERZEN relies on the advantages of reactive silencers

    With reactive silencers, AERZEN reduces the noise emissions on the discharge side of its screw compressors, positive displacement blowers, and rotary lobe compressors. The innovative concept of these reactive silencers is superior to classic dissipative silencers in many respects. The sound waves developing on the discharge side of a Delta Screw compressor made by AERZEN can reach 170 to 190 dB. ...

  • Is it really possible to improve superlatives? - Absolutely, with positive displacement blowers from AERZEN! The new generation Delta Blower G5plus is on the market!

    AERZEN set standards with the Delta Blower positive displacement blowers and raised the bar ever higher for performance, economic efficiency and environmental protection. To expand upon the success of the blower series, an exciting new design sets energy saving records. The innovative assembly concept combines proven features and newly-gained advantages. Delta Blower G5plus achieves up to 5% more ...

  • Exogenous Transposable Elements Circumvent Identity-Based Silencing Permitting the Dissection of Expression Dependent Silencing

    The propagation of epigenetic marks has received a great deal of attention, yet the initiation of epigenetic silencing of a new transgene, virus, or transposable element (TE) remains enigmatic. The overlapping and simultaneous function of multiple silencing mechanisms has obscured this area of investigation. Here, we have revealed two broad mechanisms that can initiate silencing independently: ...


    By H Smith Plastics LTD

  • B&W Acquires Universal Acoustic & Emission Technologies, Inc.

    Babcock & Wilcox Enterprises, Inc. (B&W) (NYSE:BW) has acquired Universal Acoustic & Emission Technologies, Inc. (UniversalAET), a Wisconsin-based provider of custom-engineered acoustic, emission and filtration solutions, effective today. UniversalAET is a bolt-on acquisition for B&W MEGTEC and will be included in B&W’s Industrial operating segment. The ...


    By Babcock & Wilcox MEGTEC LLC

  • Is a background noise survey worth doing? - Case Study

    As a plant owner or designer you will logically try to keep construction costs down wherever possible. So noise control features can easily be sidelined as an “optional extra” to be added later if the need arises. You might also be confident a new industrial plant will comply with all regulations on completion, but that doesn’t mean a future neighbour won’t complain about ...


    By Innova Global Limited.

  • Innova`s race against time; the sonic mystery

    What began as a puzzling mystery in the semi-arid scrub-land of Colorado, ended as a race against time for the acoustic specialists of INNOVA (formerly ATCO Noise Management). The Olathe Compression Station, operated by Kinder Morgan’s TransColorado Gas Transmission, is located on a plateau in isolated, canyon-cut Colorado countryside, three km from the nearest ...


    By Innova Global Limited.

  • Bernaraby Landfill Power Plant - Case Study

    Clarke Energy has been contracted to supply and deliver one of GE's Jenbacher 1MWe containerised gas engine to LGI (Landfill Gas Industries Pty. Ltd.) for their new landfill gas power station project at Bernaraby, Queensland, Australia which will be operational in 2016. Generation Capacity The high efficiency ...


    By Clarke Energy

  • How to manage Silence? A large scale noise management system

    Abstract Silence is the main noise management system for the Dutch highways and is used by the Dutch Ministry of Transport. The Silence system comprises IT infrastructure, environmental data, noise management software, an organisation, procedures and maintenance. Typical noise management system tasks involve data management, setup noise management software, software customisation, ...


    By Softnoise GmbH

  • Experiences in development and maintenance of Silence-GIS

    Abstract Silence-GIS is a larse scale noise management system build as an extension on ArcGIS 9.3.1. This system has been designed and developed for the Dutch Highway Authorities. The aim of the system is to support decisions on Dutch and European noise policy and to predict the effect of future measures on the noise exposure of the population in The Netherlands. The information needed to ...


    By Softnoise GmbH

  • The Silence of the Lambs – Invictus Case Study

    The sound of new-born lambs bleating is something that most people would be happy to wake up to on a Spring morning – or perhaps not? Noise consultant Louise Alderson, had the unusual assignment of monitoring noise levels from baby lambs and their mothers on a farm in Cumbria following a planning application to build a housing development on nearby fields – owned by the same ...


    By Cirrus Environmental

  • Low cost fan noise attenuation in the power industry

    An article about the application of our Quiet Fan technology (QFt) to reduce the noise from large fans in the power industry has been published in Power Engineering International. The journalist suggests that the widespread adoption of the technology in this industry could reduce both capital and running costs very substantially ...

  • Satisfying super-sensitive complainants with psychological silencing

    If you play white noise to a group of people and tell them that the song “White Christmas” is hidden in the sound, about 30% of them will be convinced that they can hear it. The human mind is always looking for patterns – even when they aren’t there. This propensity explains a significant proportion of complaints where noise levels are actually very low (they can be close ...

  • Record breaking formula one fan noise control

    Problem: an extract system fan drone creating a potential environmental noise problem. Solution: aerodynamic engineering instead of silencers – in keeping with the Red Bull Technology ethos. The conventional technique used to reduce fan tones like this is a silencer – a large, palliative silencer that doesn’t tackle the source of the ...

  • Poly(propyleneimine) dendrimers as potential siRNA delivery nanocarrier: from structure to function

    The goal of the present investigation is to reveal the role of the Poly(propyleneimine) (PPI) dendrimer structure on the siRNA nanoparticles formation, facilitation of cell internalisation, and sequence specific knockdown of targeted genes. It was found that the higher generations of PPI dendrimers (G4 and G5) most effectively initiated the complexation of siRNA into discrete nanoparticles when ...


    By Inderscience Publishers

  • When Whales “Speak for Themselves”: Communication as a mediating force in wildlife tourism

    The case study for this ethnographic investigation is communication within the highest concentration of whale watch operations in the world, located in transnational waters of the North Pacific. The author explores this Western cultural setting in an effort to expand upon the culturally and environmentally inclusive conceptual framework of communication as a mediating force of human-nature ...


    By Taylor & Francis Group

  • Nanogenomics for medicine: emerging strategies to overcome bottlenecks in siRNA-based therapy of human diseases

    Silencing of gene expression by siRNA holds a promise both for a drug target discovery and as a therapy. Major bottlenecks of siRNA technology include 'off-target' silencing effects and problems with siRNA degradation before delivery. We propose a two-fold approach aimed at curtailing described shortcomings. First, before pre-clinical tests each siRNA shall be matched to comprehensive redundancy ...


    By Inderscience Publishers

  • Hnrnp h and hnrnp f complex with fox2 to silence fibroblast growth factor receptor 2 exon iiic

    The heterogeneous nuclear ribonucleoprotein H (hnRNP) family of proteins has been shown to activate exon inclusion by binding intronic G triplets. Much less is known, however, about how hnRNP H and hnRNP F silence exons. In this study, we identify hnRNP H and hnRNP F proteins as being novel silencers of fibroblast growth factor receptor 2 exon ...

  • Ros Roca brings silence to the refuse industry

    Increasing demands for higher productivity, lower noise and reduced emissions call for totally new approaches when it comes to designing Refuse Trucks. Manufacturers and fleet operators are already under extreme pressure to reduce fuel consumption and CO2 emission. Partly driven by new legislation including CO2 penalty, partly driven by increasing fuel prices and partly driven by the constantly ...


    By Ros Roca Environment

  • Selection against puma gene expression in myc-driven b-cell lymphomagenesis

    The p53 tumor suppressor pathway limits oncogenesis by inducing cell cycle arrest or apoptosis. A key p53 target gene is PUMA, which encodes a BH3-only proapoptotic protein. Here we demonstrate that Puma deletion in the Eµ-Myc mouse model of Burkitt lymphoma accelerates lymphomagenesis and that 75% of Eµ-Myc lymphomas naturally select against ...

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