Kinetic behavior of nitrification in the post-treatment of poultry wastewater in a sequential batch reactor

A sequential batch reactor with suspended biomass and useful volume of 5 L was used in the removal of nutrients and organic matter in workbench scale under optimal conditions obtained by central composite rotational design (CCRD), with cycle time (CT) of 16 h (10.15 h, aerobic phase, and 4.35 h, anoxic phase) and carbon: nitrogen ratio (COD/NO2--N+NO3--N) equal to 6. Complete cycles (20), nitrification followed by denitrification, were evaluated to investigate the kinetic behavior of degradation of organic (COD) and nitrogenated (NH4+-N, NO2--N and NO3--N) matter present in the effluent from a bird slaughterhouse and industrial processing facility, as well as to evaluate the stability of the reactor using Shewhart control charts of individual measures. The results indicate means total inorganic nitrogen (NH4+-N+NO2- -N+NO3--N) removal of 84.32±1.59% and organic matter (COD) of 53.65±8.48% in the complete process (nitrification-denitrification) with the process under statistical control. The nitrifying activity during the aerobic phase estimated from the determination of the kinetic parameters had mean K1 and K2 values of 0.00381±0.00043 min-1 and 0.00381±0.00043 min-1, respectively. The evaluation of the kinetic behavior of the conversion of nitrogen indicated a possible reduction of CT in the anoxic phase, since removals of NO2--N and NO3--N higher than 90% were obtained with only 1 h of denitrification.

Thermal performance and concentration of gases in facilities for pigs in semiarid region from State of Paraiba - Brazil

The study was conducted in a facility for pigs during the nursery and finishing in the town of 'Montadas', in the semiarid of the state of Paraiba, Brazil, in the rainy and dry season, aiming to evaluate the concentration of oxygen, methane, carbon monoxide and ammonia, and the bioclimatic indexes: ambient temperature (AT), relative humidity (RH) and the index of black globe temperature and humidity (IBGTH). These indexes differed significantly (P>0.05) between the periods and times. The AT in the rainy season was in the thermal comfort zone(TCZ) in most of the times in the nursery; for the finishing phase, thermal discomfort occurred; during the dry season, there was thermal comfort in the nursery phase; in the finishing phase the thermal discomfort occurred at all times. In the rainy season, the IBGTH was in TCZ; in the dry season, it was above the TCZ. The RH in the rainy period was in the TCZ; in the dry season, in most of the times, below the range of the TCZ. The concentration of gases showed no differences (P > 0.05) between periods and between the times, and the carbon monoxide, hydrogen sulfide and methane were below 1.0 ppm, and the ammonia showed a mean of 5.2 ppm. None of the analyzed gases exceeded the limits established by Brazilian and international standards for animals and workers.

Broiler breeder hen performance and egg hatchability during rainy season in Brazilian semi-arid region

Henhouse thermal comfort and bird age influence broiler breeder hen productivity; this way, the present research aimed to assess thermal comfort indexes and broiler breeder hen performance during winter in North East semi-arid region from Brazil, using a Cobb Avian 48 broiler strain at the age of 38 and 50 weeks. We measured the following bioclimatic indexes: air temperature and relative humidity, black globe temperature and humidity, CO2 concentration and sound pressure levels at henhouse facility. Data analysis design was complete randomized in a 3 x 3 factorial scheme with three treatments (months) and three replications (week number of collection by month). A number of 25 climatic data were observed. Bioclimatic indexes at the most warm hours throughout the day promoted bird discomfort yet sound pressure and carbon dioxide levels were under the Brazilian standards. Even in thermal comfort zone at some hours, the productivity indexes were in compliance with those recommended by the strain creation guidebook.

Public-private partnership in marine litter waste management

Marine litter is an international environmental problem that causes considerable costs to coastal communities and the fishing industry. Several international and national treaties and regulations have provisions to marine litter and forbid disposal of waste into the sea. However, none of these regulations state a responsibility for public authorities to recover marine litter from the sea, like they do for marine litter that washes up on public beaches. In a financial evaluation of a value chain for marine litter incineration it was found out that the total costs of waste incineration are approximately 100 ─ 200 % higher than waste fees offered by waste contractors of ports. The high costs of incineration are derived from the high calorific value of marine litter and therefore a high incineration cost for the waste, and long distances between ports that are taking part in a project for marine litter recovery from the sea and an Energy-from-Waste (EfW) facility. This study provides a possible solution to diverting marine litter from landfills to more environmentally sustainable EfW use by using a public-private partnership (PPP) framework. PPP would seem to fit as a suitable cooperative approach for answering problems of current marine litter disposal in theory. In the end it is up to the potential partners of this proposed PPP to decide whether the benefits of cooperation justify the required efforts.

Toimintajärjestelmän kehittäminen kiinteistö- ja toimitilajohdon palveluita tarjoavalle yritykselle

Diplomityö tehtiin kiinteistö- ja toimitilajohdon palveluita tarjoavalle suomalaiselle rakennusalan yrityksen liiketoimintalinjalle. Työn lähtökohtana oli kehittää kyseiselle liiketoimintalinjalle toimintaa ohjaava ja yhtenäistävä toimintajärjestelmä. Työ koostuu johdannosta, teoriaosuudesta, empiriaosuudesta sekä johtopäätöksistä. Johdannossa esitellään työssä käytettävät menetelmät sekä kohdeyritys. Teoriaosuudessa puolestaan esitellään myöhemmin työn empiriaosuudessa hyödynnettävät teoriakokonaisuudet. Teoriaosuus koostuu kiinteistötoimialan esittelystä, laatuajattelusta sekä prosessijohtamisen läpikäynnistä. Empiriaosuus sisältää selvityksen kohdeyrityksen lähtötilasta ja suoritetusta kehitystyöstä. Kehitystyö sisältää sanallisen ja kuvallisen selvityksen rakennetun toimintajärjestelmän eri vaiheista. Työn tuloksena syntyi kiinteistö- ja toimitilajohdon palveluille käyttökelpoinen, toimintaa tukeva ja toiminnan johtamista helpottava työkalu. Toimintajärjestelmä kehitettiin yhdessä yksikön avainhenkilöiden kanssa, jolloin sen rakentamisessa saatiin huomioitua tulevien käyttäjien toiveita. Toimintajärjestelmässä on keskitetysti muun muassa toiminnan edellyttämät tiedot ja dokumentit.

Tiedonhallinnan kehittäminen prosessikuvausten ja sähköisen dokumentoinnin avulla

Tämän diplomityön tavoitteena on selkeyttää apteekin ydinprosesseja mallintamalla prosessit ja tehostaa apteekin tiedonhallintaa sähköisen toimintajärjestelmän avulla. Ydinprosessien mallintaminen lisää apteekin työntekijöiden tietoisuutta prosessien oikeasta suoritustavasta. Dokumenttien sijoittaminen yhteen paikkaan helpottaa niiden löytymistä ja käytettävyyttä. Tässä työssä tutkittiin yhtä yritystä, joten tutkimusmenetelmänä käytettiin tapaustutkimusta. Työn keskeinen sisältö rakentuu tiedonhallinnan, prosessijohtamisen sekä sähköisen toimintajärjestelmän teorioiden pohjalta. Teoriaa hyödynnetään käytännön tutkimuksessa, jossa kartoitetaan apteekin dokumentit ja kehitetään niiden organisointia. Työssä tunnistetaan ja mallinnetaan apteekin ydinprosessit sekä kerätään tietoa niiden ongelmakohdista. Apteekin ydinprosesseiksi tunnistettiin reseptiasiakkaan palvelu ja neuvonta, itsehoitoasiakkaan palvelu ja neuvonta, kotisairaanhoidon ja hoivakotien palvelu sekä tavaranhallinta. Apteekissa luodut dokumentit luokiteltiin toimintaohjeiksi, työohjeiksi, lomakkeiksi ja rekisteriselosteiksi. Työn tuloksena apteekin tiedonhallinta tehostui dokumenttien sähköistämisellä ja organisoinnilla toimintajärjestelmään. Ydinprosessien mallintaminen selkeytti apteekin ydinprosesseja sekä lisäsi työntekijöiden tietoisuutta prosessien oikeasta toimintatavasta.

Tuotantoyrityksen suorituskyvyn kehittämissuunnitelma lean perspektiivistä – Case Lindab Oy

Tutkimuksen päätavoitteena on luoda Lindab Oy:n Kyyjärven tuotantolaitokselle kehittämissuunnitelma nojautuen Lean filosofiaan, perinteiseen suorituskyvyn mittaamiseen ja sen osa-alueisiin. Lean teorian näkökulmasta tutkimustyössä tunnistetaan tärkeimmät kehityskohteet ja niihin vaikuttavimmat kehitystoimet. Työn alussa selvitetään eri tuotantomuotoja ja niiden kilpailukykyä, lisäksi perustellaan, miksi työn kehittämisen pohjalle valitaan Lean - filosofia. Raportin kuluessa Lean ajattelua avataan lukijalle enemmän ja kerrotaan mitä se sisältää. Lean filosofiasta valitaan elementtejä, joita voidaan käyttää jatkossa, kehitettävän toimintaympäristön kehitysmallin muodostamiseen. Lean filosofian tarkastelun jälkeen toimintaympäristöä tutkitaan ja muodostetaan käsitys suorituskyvyn alueista, joita on tarkoitus pyrkiä kehittämään. Tässä kohdassa etsitään myös soveltuvat Lean mittarit ja tarkistetaan syy-seuraussuhteet valittuihin suorituskyvyn osa-alueisiin. Lean mittarit toimivat myös itsearviointikysymysten taustalla, joilla kartoitetaan toimintaympäristön suorituskykyä. Suorituskyvyn mittauksen tulokset toimivat täten kehittämistehtävän lopullisina ajureina.

Use of Medicinal Plants with Teratogenic and Abortive Effects by PregnantWomen in a City in Northeastern Brazil

Purpose The purpose of this study is to verify the use ofmedicinal plants by pregnant women treated at four Basic Health Units and at a public maternity facility in Brazil s northeast. Methods This is a cross-sectional, quantitative study, performed between February and April 2014. The subjects were 178 pregnant women, aged 18 to 42 years. To collect data, a structured questionnaire with dichotomous and multiple choice questions was used. To verify the correlation between the variables, Pearson s chi-square test was used. Results The study showed that 30.9% of the pregnant women used medicinal plants, and boldo was the most cited (35.4%). All the plants utilized, except lemongrass, have toxic effects in pregnancy, according to Resolution SES/RJ N° 1757. There was no statistically significant correlation between social class and use of medicinal plants. Conclusion The health of the study participants and their unborn children is at risk due to the inappropriate use of medicinal plants.

Sosiaali- ja terveydenhuollon teknisten palveluiden tuotteistaminen

Tämän tutkimuksen tarkoituksena oli tutkia Päijät-Hämeen sosiaali- ja terveydenhuollon kuntayhtymän Tukipalvelukeskuksen teknisten palveluiden tulosalueen tuotteistamista ja tuottaa kustannusten laskutuksen periaatteellinen toteutusmalli. Työssä otetaan kantaa palveluiden hinnoittelumalleihin eli kuinka kiinteistöistä ja teknisistä ylläpitopalveluista syntyvät kustannukset voidaan osoittaa niitä käyttäville tulosalueille. Palveluiden jäsentäminen ja suoritteiden yhdistäminen muodostavat palvelutuotteen, jota palveluita käyttävälle asiakkaalle tarjotaan. Tuotekäsitteelle on tyypillistä, että sitä voidaan tuottaa saman sisältöisenä nyt ja tulevaisuudessa. Tuotteita tarjoavan palveluiden tuottajan tuotekriteerit sisältävät selkeät tuoteryhmät, tuotteiden määrällisen mitattavuuden, kuvaavat tuotenimikkeet ja tuotteilla on ostajan näkökulmasta selkeä sisältö ja hinnoittelu. Tuotteistamisen tärkein hyöty on organisaation kustannusrakenteen selkeytyminen, jonka vuoksi tuotteiden määrä, laatu ja hinta tulee olla määriteltävissä. Asiakkaalle voidaan tarjota valmiiksi hinnoiteltuja palveluosia, jolloin palveluiden räätälöinti ja modulointi ovat mahdollisia palveluiden niputtamisella. Ei-kaupallisten instanssien, kuten kuntayhtymien sisäinen laskutus ja tuotteistus mahdollistavat palveluiden standardoimisen ja johdon päätöksenteko toimialakohtaisen kustannustietoisuuden vuoksi paranee. Tutkimuksen alkuosassa paneudutaan palvelun alle kuuluviin käsitteisiin, kuten tuotteistamisajatteluun, palvelupaketteihin, palveluiden laadun mittaamiseen ja palveluiden hinnoitteluun. Lisäksi tutkimuksessa käsitellään teknisten palveluiden hinnoitteluun käytettävän toimintoperusteisen kustannuslaskennan sekä sisäisen vuokraamisen periaatteita. Teoreettisessa viitekehyksessä käsiteltyjä asioita käytettiin hyödyksi sairaanhoitopiireille laadittuun kyselytutkimukseen. Yhdessä teorian ja kyselytutkimuksen kanssa kohdeorganisaatiolle luotiin malli palveluiden tuotteistamiseksi.

Utilization of Particle Image velocimetry in PPOOLEX condensation experiments

Particle Image Velocimetry, PIV, is an optical measuring technique to obtain velocity information of a flow in interest. With PIV it is possible to achieve two or three dimensional velocity vector fields from a measurement area instead of a single point in a flow. Measured flow can be either in liquid or in gas form. PIV is nowadays widely applied to flow field studies. The need for PIV is to obtain validation data for Computational Fluid Dynamics calculation programs that has been used to model blow down experiments in PPOOLEX test facility in the Lappeenranta University of Technology. In this thesis PIV and its theoretical background are presented. All the subsystems that can be considered to be part of a PIV system are presented as well with detail. Emphasis is also put to the mathematics behind the image evaluation. The work also included selection and successful testing of a PIV system, as well as the planning of the installation to the PPOOLEX facility. Already in the preliminary testing PIV was found to be good addition to the measuring equipment for Nuclear Safety Research Unit of LUT. The installation to PPOOLEX facility was successful even though there were many restrictions considering it. All parts of the PIV system worked and they were found out to be appropriate for the planned use. Results and observations presented in this thesis are a good background to further PIV use.

Evaluation of Bubble Formation and Break Up in Suppression Pools by Using Pattern Recognition Methods

During a possible loss of coolant accident in BWRs, a large amount of steam will be released from the reactor pressure vessel to the suppression pool. Steam will be condensed into the suppression pool causing dynamic and structural loads to the pool. The formation and break up of bubbles can be measured by visual observation using a suitable pattern recognition algorithm. The aim of this study was to improve the preliminary pattern recognition algorithm, developed by Vesa Tanskanen in his doctoral dissertation, by using MATLAB. Video material from the PPOOLEX test facility, recorded during thermal stratification and mixing experiments, was used as a reference in the development of the algorithm. The developed algorithm consists of two parts: the pattern recognition of the bubbles and the analysis of recognized bubble images. The bubble recognition works well, but some errors will appear due to the complex structure of the pool. The results of the image analysis were reasonable. The volume and the surface area of the bubbles were not evaluated. Chugging frequencies calculated by using FFT fitted well into the results of oscillation frequencies measured in the experiments. The pattern recognition algorithm works in the conditions it is designed for. If the measurement configuration will be changed, some modifications have to be done. Numerous improvements are proposed for the future 3D equipment.

Outbreak of infectious laryngotracheitis in large multi-age egg layer chicken flocks in Minas Gerais, Brazil

A recent (November 2010) outbreak of infectious laryngotracheitis (ILT) in a multi-age laying hen facility in Minas Gerais state, Brazil, is described. Previous ILT outbreak in laying hens was only notified in São Paulo state, Brazil, in 2002. In the outbreak described here, the affected population was approximately eight million hens, with flock sizes ranging from 100,000 to 2,900,000 chickens. The average mortality ranged from 1 to 6%, and morbidity was around 90% (most of the twenty seven farms of the area were positive for ILT virus). Three multi-age laying farms from one company were selected for this report. Clinical signs included prostration, dyspnea, conjunctivitis, occasional swelling of the paranasal sinuses and bloody mucous nasal discharge. Severely affected chickens presented with dyspnea, gasping and became cyanotic before death. At necropsy, these chickens had fibrinous exudate blocking the larynx and the lumen of cranial part of the trachea. In addition, conjunctivitis with intense hyperemia, edema and sinuses with caseous exudate were present. On histopathology, there were marked necrosis and desquamation of respiratory ephitelium and conjunctiva with numerous syncytial cells formation and fibrinous exudate. Moderate to marked non suppurative (especially lymphocytes and plasma cells) infiltration in the lamina propria also was observed. Sixteen out of 20 examined chickens, eosinophilic intranuclear inclusion bodies were observed in the syncytial cells. The DNA extracted from larynx and trachea produced positive PCR results for ILT virus (ILTV) DNA using formalin-fixed, paraffin embedded (FFPE) samples. Amplicons from a small region of ICP4 gene were submitted to sequencing and showed 100% identity with ILTV EU104910.1 (USA strain), 99% with ILTV JN596963.1 (Australian strain) and 91% with ILTV JN580316.1 (Gallid herpesvirus 1 CEO vaccine strain) and JN580315.1 (Gallid herpesvirus 1 TCO vaccine strain).

Additional information about a mange outbreak by Allopsoroptoides galli (Acari: Psoroptoididae) in commercial laying hens in the state of São Paulo, Brazil

This paper reports additional information about a mange outbreak by the mite Allopsoroptoides galli in a commercial egg-laying hen facility in the state of São Paulo, Brazil. About half of the 76,000 multi-age birds of the flock were affected. Experimental infestations carried out on naive hens resulted in clinical signs similar to those diagnosed in naturally infested hens, such as generalized scaly dermatitis, presence of mucus-like material and yellowish crusts on the skin and around the calami, feather loss and strong unpleasant odor. About 30% drop of egg production was estimated. The possible source of infestation were wild birds identified on the ground and roofs of the sheds.

Static pressure and wall shear stress distributions in air flow in a seven wire-wrapped rod bundle

An experimental investigation is performed in a turbulent flow in a seven wire-wrapped rod bundle, mounted in an open air facility. Static pressure distributions are measured on central and peripheral rods. By using a Preston tube, the wall shear stress profiles are experimentally obtained along the perimeter of the rods. The geometric parameters of the test section are P/D=1.20 and H/D=15. The measuring section is located at L/D=40 from the air inlet. It is observed that the dimensionless static pressure and wall shear stress profiles are nearly independent of the Reynolds number and strongly dependent of the wire-spacer position, with abrupt variations of the parameters in the neighborhood of the wires.

Bubble-Bubble Interaction in Horizontal Two-Phase Slug Flow

Modelling of the slug structure requires a new effort on fundamental research. To clarify some aspects of the horizontal slug flow, an experimental study of the behaviour of two isolated bubbles in a single-phase liquid flow was performed. This procedure was adopted to avoid the overlap of different phenomena induced by a train of long bubbles. The experimental facility consists of a 90-m horizontal PVC pipe with internal diameter of 0,053 m. The behaviour of two single air bubbles travelling in a water flow was studied. Focus was given on the influence of the distance between the bubbles on the velocity of the second bubble. This study allows the understanding of the mechanism of overtaking that takes place right after the slug formation and that precedes the coalescence of bubbles in a slug flow. The results show that bubbles placed behind a liquid slug smaller than a critical value move faster than the leading one. Otherwise, they move slower than the leading one.