02412oam 22005054a 450 991059546260332120230705183119.097894616646939461664699(CKB)5670000000388520(OCoLC)1346385575(MdBmJHUP)musev2_103373(PPN)267459238(ScCtBLL)5c4d6d6d-ca91-4026-8d45-915492ddc94e(EXLCZ)99567000000038852020221004d2022 uy 0engur|||||||nn|ntxtrdacontentcrdamediacrrdacarrierAbsent Presences in the Colonial Archive Dealing with the Berlin Sound Archive's Acoustic Legacies /Irene HildenLeuven :Leuven University Press,2022.©2022.1 online resource (1 online resource 300 pages)9789461664709 9461664702 9789462703407 946270340X The Berlin Sound Archive (Lautarchiv) consists of an extensive collection of sound recordings, compiled for scientific purposes in the first half of the 20th century. Recorded on shellac are stories and songs, personal testimonies and poems, glossaries and numbers. This book engages with the archive by consistently focusing on recordings produced under colonial conditions.With a firm commitment to postcolonial scholarship, Absent Presences in the Colonial Archive is a historical ethnography of a metropolitan institution that participated in the production and preservation of colonial structures of power and knowledge. The book examines sound objects and listening practices that render the coloniality of knowledge fragile and inconsistent, revealing the absent presences of colonial subjects who are given little or no place in established national narratives and collective memories.Sound recordings in ethnologyImperialismSound recording librariesGermanyBerlinfastSound recordings in ethnology.Imperialism.Sound recording libraries.325/.3Hilden Irene1264577MdBmJHUPMdBmJHUPBOOK9910595462603321Absent Presences in the Colonial Archive2965401UNINA05022nam 2201153z- 450 991056646710332120220506(CKB)5680000000037709(oapen)https://directory.doabooks.org/handle/20.500.12854/81162(oapen)doab81162(EXLCZ)99568000000003770920202205d2022 |y 0engurmn|---annantxtrdacontentcrdamediacrrdacarrierOptical Gas Sensing: Media, Mechanisms and ApplicationsBaselMDPI - Multidisciplinary Digital Publishing Institute20221 online resource (234 p.)3-0365-3479-2 3-0365-3480-6 Optical gas sensing is one of the fastest developing research areas in laser spectroscopy. Continuous development of new coherent light sources operating especially in the Mid-IR spectral band (QCL-Quantum Cascade Lasers, ICL-Interband Cascade Lasers, OPO-Optical Parametric Oscillator, DFG-Difference Frequency Generation, optical frequency combs, etc.) stimulates new, sophisticated methods and technological solutions in this area. The development of clever techniques in gas detection based on new mechanisms of sensing (photoacoustic, photothermal, dispersion, etc.) supported by advanced applied electronics and huge progress in signal processing allows us to introduce more sensitive, broader-band and miniaturized optical sensors. Additionally, the substantial development of fast and sensitive photodetectors in MIR and FIR is of great support to progress in gas sensing. Recent material and technological progress in the development of hollow-core optical fibers allowing low-loss transmission of light in both Near- and Mid-IR has opened a new route for obtaining the low-volume, long optical paths that are so strongly required in laser-based gas sensors, leading to the development of a novel branch of laser-based gas detectors. This Special Issue summarizes the most recent progress in the development of optical sensors utilizing novel materials and laser-based gas sensing techniques.Optical Gas SensingHistory of engineering & technologybicsscTechnology: general issuesbicsscabsorption spectroscopyair pollution monitoringanalytic modelantiresonant hollow core fiberscantilevercapacitive detectionCO2combined NIR/MIR laser absorptionderivative absorption spectroscopydilution methodeddy covariance methodFabry-Perot cavityfemtosecond laser micromachiningfiber gas sensorsflow simulationflow speedflow turbulenceflux measurementfourier transformfrequency combgas modulationgas sensinggas sensing applicationsgas sensorgas sensorsheterodyne detectionhigh-resolution spectroscopyhigh-speed operationimage processinginfrared imagingintegrated sensorsisotopic ratiolaser flow meterlaser gas analyzerlaser multiplexing in a mid-IR single-mode fiberlaser spectroscopyMEMSmetrologymicrochannel fabricationmicrostructured fibersmid-infraredmodulation techniquesmultispectral and hyperspectral imagingphotoacousticphotoacoustic spectroscopyphotoacousticsphotothermal spectroscopyPitot tubepressurepressure transducerquantum cascade detectorRaman spectroscopyrefractometryremote sensing and sensorsshort-term performancesimultaneous multispecies (CO, CO2, H2O) in situ measurementsspectroscopytime of flighttunable diode laser absorption spectroscopyVernier spectroscopywafer-levelwaveguideswavelength modulation spectroscopyHistory of engineering & technologyTechnology: general issuesAbramski Krzysztof Medt1319553Jaworski PiotredtAbramski Krzysztof MothJaworski PiotrothBOOK9910566467103321Optical Gas Sensing: Media, Mechanisms and Applications3033958UNINA