A linearity test for acoustic one-port souresLavrentjev, Jüri; Boden, Hans; Abom, MatsJournal of sound and vibration1992 / 3, p. 534-539 A novel design for cruiser type motorcycle silencer based on micro-perforated elementsKabral, Raimo; Rämmal, Hans; Auriemma, Fabio; Luppin, Janek; Kõiv, Risto; Tiikoja, Heiki; Lavrentjev, JüriSAE technical papers2012 https://www.researchgate.net/publication/236005547_A_Novel_Design_for_Cruiser_Type_Motorcycle_Silencer_Based_on_Micro-Perforated_Elements Acoustic analysis of small engine catalytic converters : SAE 2010-32-0022Lavrentjev, Jüri; Rämmal, HansSAE technical papers2010 / [12] p Acoustic source data for fansLavrentjev, Jüri; Abom, Mats; Boden, HansAcustica1996 Acoustic studies of micro-perforates for small engine silencersKabral, Raimo; Rämmal, Hans; Lavrentjev, JüriSAE technical papers2012 https://www.sae.org/publications/technical-papers/content/2012-32-0107/ Acoustic studies on small engine silencer elementsKabral, Raimo; Rämmal, Hans; Lavrentjev, Jüri; Auriemma, FabioSAE technical papers2011 / [8] p. : ill Acoustic study of multi-layered microperforated elements for fibreless noise control applicationsVillau, Margus; Rämmal, Hans; Lavrentjev, JüriIOP conference series : materials science and engineering2021 / art. 012015, 7 p. : ill https://doi.org/10.1088/1757-899X/1140/1/012015 Acoustic study of novel eco-friendly material for vehicle NVH applicationsRämmal, Hans; Lavrentjev, JüriMaterials today: proceedings2020 / p. 2331-2337 https://doi.org/10.1016/j.matpr.2020.04.632 Conference proceedings at Scopus Article at Scopus Article at WOS Acoustic study on motorcycle helmets with application of novel porous materialLavrentjev, Jüri; Rämmal, HansSAE Technical Paper Series : The 25th Small Engine Technology Conference (SETC2019) : Small Powertrains–Innovating for Their Future Role, International Conference Center Hiroshima, November 19-21, 2019 : Final program2020 / Paper 2019-32-0531, p. 1-7 : ill https://www.sae.org/publications/technical-papers/content/2019-32-0531/ http://www.setc-jsae.com/2019docs/SETC2019_FinalProgram_all.pdf Conference proceedings at Scopus Article at Scopus Acoustic study on tubular micro-perforated flow plug sections for vehicle silencer’s applicationVillau, Margus; Rämmal, Hans; Lavrentjev, JüriSAE Technical Paper2022 / p. 1-7 https://doi.org/10.4271/2022-01-0933 https://www.sae.org/publications/technical-papers/content/2022-01-0933/ Conference proceedings at Scopus Article at Scopus Aero-acoustic studies and innovative noise control with application to modern automotive gas exchange system = Kaasaegse automootori gaasivahetussüsteemide aeroakustilised uuringud ja müra vähendamise innovaatilised meetodidKabral, Raimo2015 https://digi.lib.ttu.ee/i/?2502 Application of novel micro-grooved elements to small engine silencerAuriemma, Fabio; Rämmal, Hans; Lavrentjev, JüriSAE Technical Papers2013 / [10] p.: ill Autode väljalaskesummutidLavrentjev, JüriTehnika ja Tootmine1991 / 9/10, lk. 55-57: ill Autode õhutakistusLavrentjev, JüriLiiklusleht : Tallinna Ühiskondliku Autoinspektsiooni Nõukogu eriväljaanne koostöös Tallinna Liikluspolitsei ja ühistuga "Purila"1988 / lk. 4 https://www.ester.ee/record=b1252058*est Autolabor uuenes silmnähtavalt : [autotehnika õppetooli autolabor kolis ümberehitatud ja renoveeritud ruumidesse Kopli 116]Lavrentjev, JüriMente et Manu2001 / 3. mai, lk. : fot https://www.ester.ee/record=b1242496*est Autonduse käsiraamat2014 https://www.ester.ee/record=b4433745*est Characterisation of fluid machines as acoutic two-port sourcesAbom, Mats; Boden, Hans; Lavrentjev, JüriProceedings INTER-NOISE '93, Belgium1993 / p. 1235-1238 A complete acoustic analysis on the passive effect of small engine silencer elementsKabral, Raimo; Rämmal, Hans; Lavrentjev, Jüri; Auriemma, FabioProceedings of International Congress on Sound and Vibration (ICSV18) : Rio de Janeiro, Brazil, 10 to 14 July 20112011 Concept study of sustainable noise control solution for HVAC systems based on microperforated elementsVillau, Margus; Rämmal, Hans; Lavrentjev, JüriProceedings of the Estonian Academy of Sciences2021 / p. 461-469 : ill https://doi.org/10.3176/proc.2021.4.13 Journal metrics at Scopus Article at Scopus Journal metrics at WOS Article at WOS Damping of acoustic waves in straight ducts and turbulent flow conditionsTiikoja, Heiki; Auriemma, Fabio; Lavrentjev, JüriSAE Technical Paper Series : 9th International Styrian Noise, Vibration & Harshness Congress : The European Automotive Noise Conference2016 / Paper 2016-01-1816, p. 1-9 : ill http://dx.doi.org/10.4271/2016-01-1816 Dedicated testrig for acoustic characterization of automotive silencersLavrentjev, Jüri; Rämmal, HansProceedings of the ICSV 16 : The 16th International Congress on Sound and Vibration : Krakow, Poland, 5-9 July, 20092009 / [6] p https://www.researchgate.net/publication/287088587_Dedicated_testrig_for_acoustic_characterization_of_automotive_silencers Design and performance of acoustic metamaterial structure for inlet duct noise attenuationLavrentjev, Jüri; Rämmal, HansSAE Technical Papers2017 / 2017-32-0066, [6] p. : ill https://www.sae.org/publications/technical-papers/content/2017-32-0066/ Design and performance of acoustic metamaterial structure for inlet duct noise attenuation [Online resource]Lavrentjev, Jüri; Rämmal, HansSETC 2017 : 23rd Small Engine Technology Conference “Small Engine Technology - Generating a Promising Future”, November 15-17, 2017 Jakarta, Indonesia : Final program : SAE Technical Paper2017 / 2017-32-006, p. 37 http://www.setc-jsae.com/past_docs/2017/list_of_paper.pdf Determination of acoustic properties for open duct termination in hot jet conditions using FEM simulationRämmal, Hans; Lavrentjev, JüriProceedings of the 14th International Congress on Sound and Vibration (ICSV 14) : Cairns (Australia), 9-12 July, 20072007 / ? p https://www.researchgate.net/publication/315747798_DETERMINATION_OF_ACOUSTIC_PROPERTIES_FOR_OPEN_DUCT_TERMINATION_IN_HOT_JET_CONDITIONS_USING_FEM_SIMULATION Determination of one-port source data for fans via scaling laws and lumped modelsLavrentjev, Jüri1998 Determination of source impedance of fluid machines by lumped element model [Electronic resource]Lavrentjev, JüriProceedings of 17-th International Congress of Acoustics (ICA 2001) : September 2-7, 2001, Rome, Italy2001 / [3] p. [CD-ROM] Detsibellide vastuLavrentjev, JüriLiiklusleht : Tallinna Ühiskondliku Autoinspektsiooni Nõukogu eriväljaanne koostöös Tallinna Liikluspolitsei ja ühistuga "Purila"1988 / lk. 6 https://www.ester.ee/record=b1252058*est Eesti elektriprojekt ja liigne optimismLavrentjev, JüriEesti Päevaleht2011 / lk. 3 https://epl.delfi.ee/artikkel/51298852/eesti-elektriautoprojekt-ja-liigne-optimism Endurance of micro-perforated elements in unmanned ground vechicle’s small diesel engine silencer applicationRämmal, Hans; Lavrentjev, JüriSAE Technical Paper Series : The 25th Small Engine Technology Conference (SETC2019) : Small Powertrains–Innovating for Their Future Role, International Conference Center Hiroshima, November 19-21, 2019 : Final program2020 / Paper 2019-32-0533, p. 1-8 http://www.setc-jsae.com/2019docs/SETC2019_FinalProgram_all.pdf Conference proceedings at Scopus Article at Scopus Experimental acoustic characterization of automotive inlet and exhaust system = Autode sisse- ja väljalaskesüsteemi akustilised katsetusuuringudTiikoja, Heiki2014 https://www.ester.ee/record=b3062700*est Experimental acoustic characterization of IC-engine simulated hot exhaust systemRämmal, Hans; Lavrentjev, JüriProceedings of INTER-NOISE2004 / ? p Experimental determination of acoustic reflection coefficient of duct openings in simulated hot conditions [Electronic resource]Rämmal, Hans; Lavrentjev, JüriProceedings of 33-th International Congress and Exposition on Noise Control Engineering : INTERNOISE2005 : 07-10 August 2005, Rio de Janeiro, Brazil2005 / ? p. [CD-ROM] Experimental investigations of sound reflection from hot and subsonic flow duct terminationTiikoja, Heiki; Lavrentjev, Jüri; Rämmal, Hans; Abom, MatsJournal of sound and vibration2014 / p. 788-800 : ill Experimental methods for determining the source characteristics of fans modelled as acoustic one-port sourcesBoden, Hans; Abom, Mats; Lavrentjev, JüriProceedings of FAN NOISE Symposium 92, CETIM, France1992 / p. 351-358 Experimental methods for sound propagation studies in automotive duct systemsRämmal, Hans2007 https://www.ester.ee/record=b2298297*est Experimental study of noise barrier boards with increased acoustic performance by utilizing Helmholtz resonator effectsLavrentjev, Jüri; Rämmal, HansMaterials today: proceedings2020 / p. 2566-2571 https://doi.org/10.1016/j.matpr.2020.05.402 Conference proceedings at Scopus Article at Scopus Article at WOS Extended investigations on micro-grooved elements - a novel solution for noise controlAuriemma, Fabio; Rämmal, Hans; Lavrentjev, JüriSAE international journal of materials and manufacturing2014 / p. 184-194 : ill FISITA aastakongressil HelsingisLavrentjev, JüriTransport ja Teed2002 / 7/8, lk. 25-27 https://artiklid.elnet.ee/record=b1010353*est Green eco-friendly acoustic materialsLavrentjev, JüriIOP conference series : materials science and engineering2021 / art. 012009, 6 p.: ill https://doi.org/10.1088/1757-899X/1140/1/012009 Improvement of safety and health of the population of Tallinn with the aim of prolonging lifeTint, Piia; Munter, Rein; Siirde, Andres; Möller, Kalju; Konts, Peep; Siirak, Virve; Lavrentjev, JüriAvoiding Aging Catastrophe : proceedings of the international symposium : 28-29 January 2002, Tallinn, Estonia2002 / p. 65-70 Innovative fibreless HVAC duct silencer based on microperforated elementsVillau, Margus; Rämmal, Hans; Lavrentjev, JüriMaterials today: proceedings2021 / 7 p. : ill https://doi.org/10.1016/j.matpr.2021.06.201 Investigation of wave propagation and reflection in ducts with arbitrary environment using threemicrophone methodLavrentjev, Jüri; Tiikoja, HeikiINTER-NOISE 2008 : 37th International Congress and Exposition on Noise Control Engineering : Shangai, 26-29. October 2008 : proceedings. Vol 32009 / p. 1623-1629 Jüri Lavrentjev: uuringud ei kinnita tuulikute mõju tervisele [Võrguväljaanne]Lavrentjev, Jürionline.le.ee2021 "Jüri Lavrentjev: uuringud ei kinnita tuulikute mõju tervisele" Kutsestandard : liikuvusinsener, tase 6 [Võrguväljaanne]2018 https://www.kutseregister.ee/ctrl/et/Standardid/exportPdf/10722384/ Kutsestandard : liikuvusinsener, tase 7 [Võrguväljaanne]2018 https://www.kutseregister.ee/ctrl/et/Standardid/exportPdf/10722406/ Leiutajad ootavad riigi toetust oma ideede elluviimiseks : [mainitud ka TTÜ osa leiutiste kasulikkuse analüüsis, TTÜ prof. Jüri Lavrentjevi kommentaariga]Günter, Aleksei; Popp, Marika; Lavrentjev, JüriPostimees2005 / 2. juuni, lk. 8-9 : ill https://www.postimees.ee/1479497/leiutajad-ootavad-riigi-toetust-oma-ideede-elluviimiseks Loodusseadused kehtivad ka vee all : [TTÜ autotehnika professori Jüri Lavrentjevi sukeldumishuvist]Lavrentjev, JüriMente et Manu2016 / lk. 16-17 : fot Masinaehitustehnoloogia kateeder ja masinaehituse instituut 1918-20152015 https://www.ester.ee/record=b4504552*est Micro-grooved elements - a novel solution for noise controlAuriemma, Fabio; Rämmal, Hans; Lavrentjev, JüriSAE international journal of material and manufacturing2013 / p. 599-610 : ill Modelling of fluid machines as sources of sound in duck and pipe systemsLavrentjev, Jüri; Abom, Mats; Boden, HansINTER-NOICE 96, Southampton, 19961996 Multi-port models for source characterization of fluid machines : Doctoral thesis 1998Lavrentjev, Jüri1998 https://www.ester.ee/record=b1351999*est Noise from turbo-charged diesel engine exhaust systemsLavrentjev, JüriProceedings of 12. International Congress on Sound and Vibration : 11-14 July 2005, Lisbon, Portugal2005 / ? p On Acoustic Properties of Duct Termination Exhausting Hot Flow by Utilizing FEMSimulationRämmal, Hans; Lavrentjev, JüriEvolutions in mechanical engineering2021 / art. EME.000565 https://crimsonpublishers.com/eme/fulltext/EME.000565.php On experimental techniques to determine acoustic performance of small exhaust silencers : SAE tech. paper no. 2009-32-0015Lavrentjev, Jüri; Rämmal, HansSAE Technical Papers2009 / [6] p On the acoustic reflection at pipe openingRämmal, Hans; Lavrentjev, Jüri; Tiikoja, HeikiProceedings of the 17th International Congress on Sound & Vibration (ICSV17) : Cairo, 18-22 July 20102010 / [8] p On the modelling of fluid machines as acoustic N-port sourcesLavrentjev, JüriProceedings of International Conference INTER-NOISE 94, Japan, Yokohama, August 19941994 / p. 379-382 Prediction of 1-port source data for centrifugal fansLavrentjev, JüriProceedings of International Conference INTER-Noise 98, Christchurch, New Zealand, 19981998 / p. 310-313 Raudteeülesõidukohtade ohtlikkus ja selle hindamineLavrentjev, JüriTeeleht2005 / 1, lk. 3-6 : ill Reliability study of micro-perforated elements in small engine silencer applicationRämmal, Hans; Lavrentjev, JüriSETC 2017 : 23rd Small Engine Technology Conference “Small Engine Technology - Generating a Promising Future”, November 15-17, 2017 Jakarta, Indonesia : Final program : SAE Technical Paper2017 / 2017-32-0075, p. 37 http://www.setc-jsae.com/setc2017docs/2017finalprogram/SETC2017_Final.pdf Richard Levet 10.01.1921-25.11.2011 : in memoriamLavrentjev, JüriMente et Manu2011 / lk. 4 https://www.ester.ee/record=b1242496*est Risk management of major accident hazards in EstoniaTint, Piia; Munter, Rein; Lavrentjev, Jüri; Siirde, Andres; Möller, Kalju; Siirak, VirveSafety and Reliability : International Conference to Safer Life and Environment : KONBiN 2003 : Gdynia, May 27-30, 2003. Volume 1, Hazard, Risk and Safety Analysis and Prediction Accident and Pollution Investigations2003 / p. 151-158 Sound reflection at an open end of a circular duct exhausting hot gasRämmal, Hans; Lavrentjev, JüriNoise control engineering journal2008 / 2, p. 107-114 Sound reflection from subsonic flow duct termination exhausting hot jetRämmal, Hans; Lavrentjev, JüriINTER-NOISE 2008 : 37th International Congress and Exposition on Noise Control Engineering : Shangai, 26-29. October 2008 : proceedings. Vol 32009 / p. 1703-1711 Source characterization of fans using acoustic 2-port modelsBoden, Hans; Abom, Mats; Lavrentjev, JüriProceedings FAN NOISE, Sept., 1992, Senlis, France1992 / p. 359-364 The effect of various fuels on engine powerVallbaum, Erko; Muoni, Rein; Lavrentjev, JüriTarptautinis verslas : inovacijos, psichologija, ekonomika = International business : innovations, psychology, economics2016 / p. 40-54 : ill The passive acoustic effect of automotive catalytic convertersLavrentjev, Jüri; Rämmal, Hans; Tiikoja, HeikiSAE technical papers2011 / [8] p.: ill TTÜ masinaehituse instituut : tööstuse konkurentsivõime tõstmineOtto, Tauno; Lavrentjev, Jüri; Majak, JüriTTÜ mehaanikateaduskond. Eesti Masinatööstuse Liit2011 / lk. 33-42 : ill., fot http://www.ester.ee/record=b2720689*est Uuenduslik tootmine : käsiraamatRiives, Jüri; Lumiste, Rünno; Reedik, Vello; Roosimölder, Lembit; Karjust, Kristo; Kers, Jaan; Kiolein, Indrek; Kokla, Margo; Küttner, Rein; Lavin, Jaak; Lavrentjev, Jüri; Lõun, Kaia; Mõtus, Leo; Naams, Invar; Otto, Tauno; Pohlak, Meelis; Raba, Karl; Saks, Alo; Talkop, Adolf; Tähemaa, Toivo; Veinthal, Renno2011 http://www.ester.ee/record=b2736534*est Uurimistöödest kahetaktiliste mootorite alalSillat, Rein; Lavrentjev, JüriTehnika ja Tootmine1986 / lk. 36-39 https://www.ester.ee/record=b1073047*est VAZ-2109 oleks Šveitsis veoautode klassisLavrentjev, JüriÄripäev1994 / 9. märts Õppimisvõimalusest Tallinna Tehnikaülikoolis : [transporditehnika õppesuund]Lavrentjev, JüriTransport ja Teed1999 / 5, lk. 25 Автомобильные дороги и транспортRoste, Irina; Aavik, Andrus; Segerkrantz, Vladimir; Pertens, Sven; Roste, Irina; Sillat, Arno; Lavrentjev, Jüri1989 https://www.ester.ee/record=b1509682*est Исследование влияния некоторых геометрических параметров двухтактного карбораторного двигателя на экономические и экологические характеристики егоTsopp, P.; Valdaru, T.; Sillat, Rein; Lavrentjev, JüriXXX студенческая научно-техническая конференция вузов Прибалтийских республик, Белорусской ССР и Молдавской ССР, 8-10 апреля 1986 года : тезисы докладов. Том II, Автоматика. Энергетика. Механика. Химия1986 / с. 147 https://www.ester.ee/record=b1305565*est Об одной модели неупругого деформированияKenk, Kalju; Lavrentjev, JüriXXV студенческая научно-техническая конференция вузов Прибалтийских республик, Белорусской ССР и Молдавской ССР, 21-23 апреля 1981 года : тезисы докладов. Том 1, Общественные науки. Физико-математические науки. Строительство. Экономика1981 / с. 74-75 https://www.ester.ee/record=b1322624*est Расчет акустических характеристик систем газообмена двухтактных двигателейLavrentjev, JüriПовышение мощностных, экономических и экологических характеристик двухтактовых карбюраторных двигателей : материалы Таллиннского всесоюзного научно-технического семинара, 1-3 декабря 1987 года1988 / с. 29-30 https://www.ester.ee/record=b1226891*est Расчет рабочего процесса двухтактных карбюраторных двигателейSillat, Rein; Lavrentjev, JüriПовышение мощностных, экономических и экологических характеристик двухтактовых карбюраторных двигателей : материалы Таллиннского всесоюзного научно-технического семинара, 1-3 декабря 1987 года1988 / с. 10 https://www.ester.ee/record=b1226891*est Упрощенный метод расчетного определения характеристик глушителя выпуска двухтактного двигателяLavrentjev, JüriАвтомобильные дороги и транспорт. 181989 / с. 49-57