Search results for " Monitoring"
showing 10 items of 3129 documents
Profiles and seasonal distribution of airborne fungi in indoor and outdoor environments at a French hospital
2009
International audience; A one-year prospective survey of fungal air contamination was conducted in outdoor air and inside two haematological units of a French hospital. Air was sampled with a portable Air System Impactor. During this period of survey, the mean viable fungal load was 122.1 cfu/m(3) in outdoor air samples, and 4.1 and 3.9 cfu/m(3) in samples from adult and pediatric haematology units, respectively. In outdoor samples, Cladosporium was the dominant genus (55%) while in the clinical units, Penicillium sp. (23 to 25%), Aspergillus sp. (15 to 23%) and Bjerkandera adusta (11 to 13%) were the most frequently recovered airborne fungi. The outdoor fungal load was far higher in autumn…
Occurrence of selected antibiotics and antiretroviral drugs in Nairobi River Basin, Kenya.
2015
In this paper, we investigated the occurrence of three antibiotics (sulfamethoxazole, trimethoprim and ciprofloxacin) and three antiretroviral (lamivudine, nevirapine and zidovudine) drugs in the Nairobi River Basin, Kenya. The analytical procedure involved extraction using solid phase extraction followed by liquid chromatography-electrospray ionization tandem mass spectrometry (SPE-LC-ESI-MS/MS). In this study, 40 sites were selected for sampling, including 38 sites along the rivers and 2 wastewater treatment effluent sites. All the studied compounds were detected with sulfamethoxazole having the highest detection frequency of 97.5% and ciprofloxacin had the lowest at 60%. The results show…
Analytical performance issues: comparison of ATP bioluminescence and aerobic bacterial count for evaluating surface cleanliness in an Italian hospita…
2013
Contaminated hospital surfaces have been demonstrated to be an important environmental reservoir of microorganisms that can increase the risk of nosocomial infection in exposed patients. As a consequence, cleaning and disinfecting hospital environments play an important role among strategies for preventing healthcare-associated colonization and infections. The aim of the present study was to evaluate whether adenosine triphosphate (ATP) presence, measured by bioluminescence methods, can predict microbiological contamination of hospital surfaces. The study was carried out between September and December 2012 at the University Hospital “P. Giaccone” of Palermo. A total of 193 randomly selected…
Rib-Roller Wear in Tapered Rolling Element Bearings: Analysis and Development of Test Rig for Condition Monitoring
2020
Rolling Element Bearings (REBs) are present in virtually all machines with moving or rotating parts, and are vital for proper performance and safe operation. Condition Monitoring (CM) of bearings often receive particular interest, as this component group rarely reach design lifetime and hence is responsible for unplanned machine downtime. Unplanned maintenance can represent a large cost which motivates development of improved CM methods for implementation of advanced maintenance regimes. Based on observations of a used bearing from an offshore drilling machine, wear on roller ends in the rib-roller contact area was identified as an area of interest for future research. A test rig for creati…
Observation and Processing of Instantaneous Frequency Variations During Bearing Tests
2020
Laboratory experiments have been performed on medium sized roller bearings with two levels of artificial damage. Recordings of long time series from accelerometers at a wide range of different radial loads and rotation speeds has been performed. Probably due to non-perfect performance of the control systems for the rotational speed or frequency, significant fluctuations were observed at all rotation speeds. The highest relative variation was observed at the lowest rotational speeds. These variations were recorded using a rotary encoder, which allows order tracking of the vibration signal. In real life condition monitoring, tachometers or rotary encoders are not always present, this can be d…
Eirāzijas bebru Castor Fiber populācijas ietekme uz vidi Cīravas pagastā
2019
Ozola A. 2019. Eirāzijas bebru Castor fiber populācijas ietekme uz vidi Cīravas pagastā. Bakalaura darbs. Rīga, Latvijas Universitāte, 50 lpp. Bakalaura darba “Eirāzijas bebru Castor fiber populācijas ietekme uz vidi Cīravas pagastā” izstrādes laikā, par pamatu izmantojot bebru sabiedriskā monitoringa metodi, tika izvērtēta bebru darbības ietekme uz vidi. Bebru darbības ietekmētās teritorijas pagasta teritorijā ir dažādas, tām ir ne vien dažādas platības un atrašanās vietas, bet dažādas ir arī ietekmēto vietu raksturojošās pazīmes. Pētījumā iegūtie rezultāti liecina, ka Cīravas pagasta teritorijā bebru darbības ietekme uz vidi kopumā nav liela, taču bebri radījuši ietekmi uz katru bebru apm…
Vecpiebalgas novada publisko ezeru apsaimniekošanas koncepcijas analīze
2020
Maģistra darba nosaukums ir „Vecpiebalgas novada publisko ezeru apsaimniekošanas koncepcijas analīze”. Darba mērķis bija izpētīt, analizēt un raksturot Vecpiebalgas novada publisko ezeru apsaimniekošanas koncepciju, noskaidrot tā stiprās un vājās puses, kā arī noskaidrot, kā novada pašvaldība īsteno šo plānu un cik efektīvi tas tiek darīts. Literatūras apskatā aprakstīta citu Baltijas jūras krastos esošo valstu, kā arī Amerikas Savienoto valstu un Kanādas ezeru apsaimniekošanas prakse. Tika apskatīti iespējamie apdraudējumi un problēmas, ar kādām šajās valstīs saskaras ezeru apsaimniekošanas programmas. Darbā tika izpētīta Vecpiebalgas novada publisko ezeru apsaimniekošanas koncepcija, veik…
Piekrastes pārvaldības attīstība Talsu novadā: sabiedriskais monitorings
2021
Arvien vairāk domājot par ilgtspējīgu dabas resursu apsaimniekošanu, vienlaikus apmierinot sabiedrības vajadzības un veicinot teritoriju ekonomisko izaugsmi, Eiropas Savienībā kopš 2002. gada attīstās integrēta piekrastes pārvaldības pieeja, lai spētu nodrošināt iepriekš minētās funkcijas, vienlaikus saglabājot piekrastes ekosistēmu nākamajām paaudzēm. Tā kā šie uzstādījumi ir aktuāli arī Latvijai, piekrastes attīstības kontekstā nepieciešams aktualizēt integrētas pārvaldības principus. Tā kā Latvijas piekraste stiepjas gandrīz 500 km garumā, būtiski ir veicināt integrētas pārvaldības pieejas attīstību ne vien lielākajās piekrastes pilsētās, bet gan visās piekrastes pašvaldībās, sevišķi akt…
Latvijas strūklaku vides kvalitāte un apsaimniekošana
2017
Maģistra darba nosaukums ir “Latvijas strūklaku vides kvalitāte un apsaimniekošana”. Darba mērķis ir novērtēt Latvijas strūklaku ūdens atbilstību kvalitatīvai videi, noskaidrot strūklaku apsaimniekošanas veidu un tās problēmas, kā arī sniegt rekomendācijas strūklaku apsaimniekošanai. Mērķa sasniegšanai 2016. gada vasarā apsekotas 14 darbojošās strūklakas 13 Latvijas pilsētās, analizēta strūklaku uzbūve un konstrukcija, veikts strūklaku fizikāli-ķīmiskās un bakterioloģiskās kvalitātes novērtējums, izmantojot in situ noteikšanas testus, un, balstoties uz Toronto reģionālās Dabas aizsardzības pārvaldes izstrādāto metodi, noteikta strūklaku ūdens estētiskā kvalitāte. Balstoties uz 2015. gada pē…
Parameters Researches Regarding the Structural Parameters of the Populations of Rhynchitidae and Attelabidae in Romania
2012
The study of the two families took into account the economic factor, because there are not few species of Rhynchitidae and Attelabidae that produced important damages in the vine, orchard, and forest areas as well as in the agricultural cultures. The researches took place during 1996-2006. The fauna material was collected during the travels to different localities in the country. I n some investigated localities the collecting and the observations in the field were extended for at least 2 -3 days and for the vine ecosystems with a great attack of Byctiscus betulae the researches lasted for 3-4 years, at regulated intervals of 3-4 weeks. In order to establish the structural parameters there …