<p>    Drift tubes (DT) are prominent tools used in Ion Mobility Spectrometry (IMS) to separate ions in the gas phase due to their difference in mobility. While prominently used for small ions (< 10nm), their use for larger particles (up to 100nm) is limited and can only be attempted at atmospheric pressure due to diffusion. A system that specializes in high sensitivity larger particles (up to 1000nm) is the Differential Mobility Analyzer (DMA), but lacks in resolution (< 10 for particles 30-1000nm). The idea behind this work is to be able to design a new IMS system based on similar<br> principles to the DT but that allows high resolution and sensitivity for a large range of sizes if possible. The primary idea revolves around the principle of non-constant linear fields to try and control the width of the ion packet as it travels through the system. The first attempt was an Inverted Drift Tube (IDT) which lacked sufficient<br> sensitivity. This was followed by the development of the Varying Field Drift Tube (VFDT) which was the first of such systems to perform better than a regular DT, but only marginally. Finally, the last version of the system included a secondary pulse and labeled High Voltage Pulse - Varying Field Drift Tube (HVP-VFDT), which solved<br> some of the issues of the VFDT and was able to achieve resolving powers of 250, 3-5 times higher than regular DT.</p> <p><br>    In the IDT system, a gas flow is used to drive the packet of ions through the drift region while a linearly increasing electric field which is in the opposite direction of the flow is used to slow down the ions and separate them. In this regime it is the largest ions that arrive at the detector first, hence the name Inverted Drift Tube.This technique would allow larger ions and particles to be detected. At the same time, the linear field can be shown to have diffusion constriction (auto-correction) properties, where the broad distributions may be narrowed in the axial direction. However, the gas flow is difficult to control well and the parabolic velocity profile of the gas flow in the tube is a unfavorable factor for the system. </p> <p><br></p> <p>    To avoid the issue of the parabolic velocity but still take into account the VFDT takes the advantage of the diffusion auto-correction, the gas flow is suppressed and a linearly decreasing field is used to drive the ions. By solving the Nernst-Planck equation, we show that the VFDT has a spatial resolving power that is much higher than that of the regular DT. A DT was built and tested using a mixture of tetraalkylammonium salts. The transformation from the raw variable arrival time distribution to collision cross section or mobility diameter is derived and the linear relationship<br> makes it simple for calibration and transformation. A resolving power of over 90 is achieved experimentally although higher resolving powers were expected theory. <br>  <br>  It turns out that the difference between theory and experiments had to do with the fact that in the VFDT, the spatial and time resolving powers are different.This<br> is due to the low drift velocity at the end of the drift tube. To increase this velocity, a high voltage pulse is applied at a certain time depending on the ion/s of interest with a new system, HVP-VFDT. The system was tested numerically and experimentally where several parameters where tested resulting in a higher resolving powers when compared with DT and VFDT systems.The simulation results showed that the transmission efficiency and resolving power can be controlled by raising or lowering the field. Overall, the experimental setup tested reached resolving powers of 250 with moderate gate pulses. The HVP-VFDT system also shows that the distribution may be narrowed over the initial one, something impossible with a real drift tube and<br> opens a myriad of possibilities, including resolving powers of several thousands under low pressure and RF fields. <br>    <br>  The next step will be to couple the system to a Mass Spectrometer which is expected to be completed in the near future. To understand how a DT works with   RF fields and low pressure, a collaboration was done with David Clemmer’s lab and his 4 meter drift tube that can achieve resolutions of 150 in Helium at 4torr. Here, we tested a set of polymers and compared the results to those acquired in Nitrogen with a DMA. The shape and structure of the polymers in the gas phase was studied showing<br> self-similar assemblies that corresponds to a globule with an appendix sticking out. <br>  <br>    </p>

Bakgrund: Att bli förälder vid akut kejsarsnitt kan upplevas som överväldigande. Under 1900-talet blev kejsarsnitt allt vanligare som förlossningsmetod i Sverige. Syfte: Syftet med studien var att belysa pappors upplevelser vid akut kejsarsnitt. Metod: I studien tillämpades kvalitativ innehållsanalys med induktiv ansats, där sex bloggar och tre vloggar inkluderades. Resultat: Pappor upplever oro för mammor och barn vid akut kejsarsnitt, oron hanteras med olika strategier. De upplever oklara roller vid akut kejsarsnitt, känner sig utlämnade och maktlösa. Pappor kan uppleva beskedet av akut kejsarsnitt som en lättnad. De har behov av kontinuerlig information för att situationen ska bli hanterbar. Studien belyser också pappors förmåga att ta till sig information. Slutsats: Pappor upplever oro över mammors och barns hälsa, samt välbefinnande. Deras oro dämpas av kontinuerlig information. Det är viktigt att barnmorskor inom förlossningsvården erbjuder pappor information, vilket kan minska känslan av oklar roll. Pappor upplever att barnmorskor inte ger relevant information vid det akuta skedet. / Background: Becoming a parent in an emergency caesarean section can be perceived as overwhelming. During the 20th century, caesarean section became an increasingly common method of childbirth in Sweden. Aim: The aim of the study was to shed light on fathers' experiences in emergency caesarean sections. Method: The study applied qualitative content analysis with an inductive approach, where six blogs and three vlogs were included. Results: Fathers experience anxiety for mothers and children in an emergency caesarean section, the anxiety is managed with different strategies. They experience unclear roles in the acute caesarean section, feel betrayed and powerless. Fathers may experience the message of an emergency caesarean section as a relief. They need continuous information to make the situation manageable. The study also highlights fathers' ability to absorb information.Conclusion: Fathers experience concerns about the health of mothers and children, as well as well-being. Their concerns are dampened by continuous information. It is important that midwives in maternity care offer fathers information, which can reduce the feeling of unclear roles. Fathers experience that midwives do not provide relevant information during the emergency phase

The Income Tax Act 58 of 1962 (“Act”) entitles taxpayers to deduct certain losses and expenses incurred by them from their taxable income if such losses and expenses comply with the requirements of section 11(a) of the Act. One of the requirements of section 11(a) is that, in order to be eligible for a deduction, the losses and expenses must have been “actually incurred” by the taxpayer. The area of tax deductions in our tax law represents the frontline in the continuous and inevitable war between the taxpayer (almost always desperately trying to maximise her deductions) and the revenue authorities (as often times desperately trying to minimise the deductions to which the taxpayer is entitled). The stage on which the various battles which make up this mighty war between citizen and state are fought is the court and the arsenal with which each party comes armed is the Act and, more specifically, the absolute belief of each party in the correctness of their interpretation of the Act, which, each party hopes, will be ably demonstrated by their able (and often extremely expensive) counsel. Such is the determination of the taxpayer and the tax authorities alike that the body of case law relating to this specific area of our law is, especially when one considers that it essentially involves on only one section of the Act, relatively voluminous. The author’s intention is to consider only one of the requirements with which the taxpayer must comply in order to be eligible for a deduction, namely, the requirement that the relevant loss or expenditure must have been “actually incurred” by the taxpayer. Despite the fact that the meaning of the phrase “actually incurred” has been considered extensively by our courts, significant uncertainty still exists as to its exact meaning. The author will deal with three specific contexts in which the meaning of this phrase remains a subject of uncertainty, namely, share-based payments, contingent liabilities and losses and expenses incurred in relation to illegal receipts. The author will begin first by dealing with the interpretation of tax statutes, the author will then, in general terms, consider the general deduction formula after which the author will delve into the meaning of the phrase “actually incurred” in the contexts of each of the transactions mentioned above. / Dissertation (LLM)--University of Pretoria, 2012. / gm2014 / Mercantile Law / unrestricted

Cesarean birth rates are associated with increased maternal morbidity. This project evaluated a quality improvement (QI) initiative implemented to reduce cesarean births among Nulliparous Term Singleton Vertex (NTSV) obstetric populations, the largest contributor to cesarean births. Variations in labor management practice contribute to cesarean birth rate; implementation of labor management bundles have been endorsed to influence practice- and system-level changes in the promotion of vaginal births. The problem addressed in this project was an organizational NTSV cesarean section rate of 30%. The purpose of the project was to use secondary data to evaluate a previously implemented labor management bundle at a large hospital in the northwestern United States. The model of improvement was used as a framework for the QI initiative and this evaluation project. The practice-focused question asked in this project was: Did NTSV cesarean birth rates change after implementation of an evidenced-based standardized labor management bundle? Archived data were collected on cesarean birth rates for 3 time periods: prebaseline, 1 year postimplementation, and 2 years postimplementation. Chi-squareï? tests compared the differences between observed and expected results of data following implementation of labor management bundles. Results show no statistically significant difference between the pre- and post- implementation periods in the NTSV laboring population. Results suggest use of labor management practice bundles alone may not lead to expected outcomes improvements and that operationalization of such practices are sensitive to institutional and/or patient population contexts. This project may serve to promote positive social change by framing evidence-based practice as a process that must attend to contextual considerations.

The aim of this thesis is to provide insight into how YouTube audiences perceive the professionalization of vlog production styles and what happens to the parasocial relationship between viewer and vlogger, especially in relation to authenticity, in relation to this. This is done by a thematic analysis of comments on Valeria Lipovetsky’s YouTube video “We Need To Talk”, which serves as a case study. The analysis is done in background to theories of professionalization of influencers, parasocial relationships and authenticity. The results show that there is a tension between the perceived authenticity of the vlogger and the professionalization of vlog production style that is affecting the parasocial relationship between viewer and vlogger negatively. The distinguished themes point to vlogs filmed by a camera team being perceived to resemble reality television which is making the viewers feel disconnected with the vlogger. It is revealed that the audience prefers vlogs where the vlogger is holding the camera themselves, asthat is perceived as more personal and authentic.

Att amma är karakteristiskt för alla däggdjur och ett beteende som utvecklats under miljontals år. Amning är en global folkhälsoangelägenhet, då bröstmjölken och amningen ger ett dominerande skydd för både barnets och mammans fysiska, kognitiva och mentala hälsa. Enligt Svenska Barnmorskeförbundet ingår det i barnmorskans kompetensbeskrivning attarbeta hälsofrämjande och förebyggande, det inkluderar amning. Barnmorskan ska främja amning, ge information till blivande föräldrar om amningens hälsofördelar samt främja hud mot hudkontakt postpartum. I Sverige har andelen kejsarsnitt varit relativt bestående sedan år 2004, runt 17 procent av alla födslar. År 2015 var den värdsliga siffran 20 procent, vilket innebar att var femte förlossning i världen under året 2015, rapporterades in som kejsarsnitt. Efter ett kejsarsnitt kan mor och barn separeras från varandra postpartum, vilket ökar risken för försenad amningsinitiering jämfört med en vaginal förlossning. Detta på grund av separation de första timmarna postpartum som visat sig vara en avgörande tidpunkt för att etablera amningen. Syftet med föreliggande litteraturstudie var att beskriva om, och i så fall vilka faktorer, som kan påverka exklusiv amning upp till sex månader efter kejsarsnitt hos mödrar med normal, fullgången graviditet. Metoden som användes var en litteraturstudie. Den utfördes baserat på 16 vetenskapliga artiklar, med kvalitativ och kvantitativ ansats. Inhämtat material söktes i databaserna CINAHL och PubMed, dessa analyserades genom en integrerad analys på ett strukturerat och systematiskt sätt. Resultatet presenterade femtiosex faktorer som kan påverka exklusiv amning sex månader efter ett kejsarsnitt. Faktorerna redovisas med hjälp av fyra bärande huvudkategorier; förlossningsvård, modern, barnet och amning. Därtill framkom även elva subkategorier. Resultatet visade att kejsarsnitt påverkade den omedelbara hud mot hudkontakten, som är främjande för den exklusiva amningen postpartum. Även maternella postoperativa komplikationer och livsstilsfaktorer, moderns amningsintention, barnets hälsotillstånd postpartum, amningsstöd, bröst- och amningskomplikationer samt modersmjölksersättning, sågs påverka exklusiv amning. Slutsatsen som kan dras är att föda med kejsarsnitt hotar den omedelbara hud mot hudkontakten som visat sig vara essentiell för den exklusiva amningen postpartum. Det sombland annat visade en lyckad exklusiv amning var kvinnans positiva avsikt och inställning till amning innan födseln. Mer utbildning behövs för all vårdpersonal inom vårdkedjan för kejsarsnitt. På så vis skulle möjligheten kunna öka till att samtliga yrkesgrupper strävar efter gemensamma beslut som gynnar hud mot hudkontakt mellan mamma och barn, och samvård utan separation i största möjliga mån. / Breastfeeding is characteristic of all mammals and a behavior that has evolved over millions of years. Breastfeeding is a global public health issue, as breast milk and breastfeeding provide a dominant protection for both the baby's and the mother's physical, cognitive and mental health. According to The Swedish Association of Midwives (Svenska Barnmorskeförbundet), it is included in the midwife's competence description, that midwives must work to promote health and health prevention, this includes breastfeeding. The midwife must promote breastfeeding, provide information to expectant parents about the health benefits of breastfeeding, and promote skin-to-skin contact postpartum. In Sweden, the proportion of caesareans has been relatively permanent since 2004, around 17 percent of all births. In 2015, the worldly figure was 20 percent, which meant that every fifth birth in the world in 2015 was reported as a caesarean section. After a caesarean section, mother and child can be separated from each other. That might increase the risk of delayed initiation of breastfeeding compared to a vaginal birth. This is due to separation the first hours postpartum which has been proved to be a crucial time to establish breastfeeding. The aim of this literature study was to describe, if and which factors, that could affect exclusive breastfeeding up to six months after a cesarean section, including mothers with a normal and full-term pregnancy. The method performed was a literature study. It was carried out based on 16 scientific articles, with a qualitative and quantitative approach. Collected material was searched in the databases CINAHL and PubMed, these were analyzed through an integrated analysis in a structured and systematic way. Result of the study features fifty-sixfactors that could affect exclusive breastfeeding six months after a caesarean section. The factors are presented using four main categories: maternity care, mother, baby and breastfeeding. In addition, eleven subcategories emerged. The results showed that cesarean section affected the immediate skin-to-skin contact, which is conducive to the exclusive postpartum breastfeeding. Maternal postoperative complications and lifestyle factors, the mother's breastfeeding intention, the child's health condition postpartum, breastfeeding support, breast and breastfeeding complications and breast milk replacement, were also seen to affect exclusive breastfeeding. Conclusion that can be drawn, is that a caesarean section threatens the immediate skin-to-skin contact that has been shown to be essential for the exclusive postpartum breastfeeding. However, the mother’s positive intention and attitude to breastfeeding before giving birth, lead to a successful exclusive breastfeeding. More training is needed for all healthcare staff within the chain for caesarean section. In this way, the possibility could increase, that all professional groups would strive for similar decisions that would be in favor for skin-to-skin contact between mother and child, and cohabitation without need for separation, as much as possible.

The thesis is aimed at perinatal factors affecting the emotional bond between a mother and a child (boding) during the first weeks postpartum. The literature review is divided into three chapters. The first chapter discusses the childbirth, the experience of childbirth and the factors affecting a subjective evaluation of the childbirth by a parturient. The second chapter follows up with an overview of findings concerning the initial afterbirth moments, and the interaction between a mother and a child during early contact. The third chapter introduces the concept of bonding. It describes its manifestations, possible measuring methods, and factors influencing its quality. The research part analyzes perinatal factors affecting bonding on a sample of 1108 mothers with the use of generalized linear regression. The independent variables are: mode of birth, the evaluation of childbirth experience by mother, and the process of early contact between a mother and a child. The results show that bonding during the first weeks postpartum was not affected by the mode of birth or by the parturient's evaluation of the childbirth experience. A significant effect was found in the occurrence of early contact between a mother and a child; mothers who had contact with the child during the first postpartum hour reported...

The master’s thesis treat of design and appreciation load-bearing steel structure of Motor Show. The object is situated on the lokality Brno. Structure is composed of rolling sections and tubes. Overall height of the structure is 17,395 meters and overall lenght is 32,60 meters. Cross link iscomposed of arched girders panel that are supported on fixed pillars. Theoutside links are composed of panel columns. Load is composed of self weight, additonal imposed load, payload and climate load caused by wind and snow that is reached for given locality.Static rewiew comes out from previous load and it has been accomplished by Scia Engineer 2008 and hand computation.

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Den 14 maj 2020 tillbringade Paolo Roberto kvällen i en lägenhet på Östermalm i Stockholm med en kvinna från ett av Europas fattigaste länder och greps på bar gärning i en polisrazzia. Stjärnkocken, skådespelaren och programledaren erkände sig skyldig till sexköp. I en intervju dagen därpå säger Roberto själv att kvinnan kanske var dittvingad. Nyheten väckte starka reaktioner i kommentarsfält på sociala medier. Syftet med studien är att undersöka hur användare uttrycker sig i kommentarsfält under en kontroversiell nyhet om ett laddat ämne som skapar delade åsikter. Vi kommer därför att analysera hur användare i kommentarsfältet på Facebook reagerade på intervjun med Paolo Roberto i TV4. Det uppsatsen intresserar sig för är hur deltagarjournalistiken bidrar till den offentliga diskursen om det känsliga ämnet sexköp, samt andra diskurser som uppkommer. Studien har två frågeställningar; en som undersöker vilka reaktioner finns i kommentarsfältet och en som undersöker hur reaktionerna kan förstås i ljuset av diskurserna om sexköp och medieetik. Uppsatsens teoretiska ramverk baseras på deltagarjournalistik och diskursteori. Studien är en kvalitativ textanalys, och genomför den textanalytiska dimensionen av Anabela Carvalhos (2008) apparat för kritisk diskursanalys. Ur det empiriska materialet har mönster identifierats varav tolv stycken har analyserats djupare. Exempel på dessa är att många beskriver Robertos beteende som att ”gråta ut” och att styra narrativet. En stor del av kommentarerna lägger även skuld på TV4 för att de ”låter” honom göra detta. Vissa ifrågasätter TV4:s medieetik och publicistiska beslut medan några ifrågasätter sexköpslagen och den allmänna synen på sexköp vilket snabbt konfronteras av andra. Uppsatsen drar slutsatser som att diskursen om sexköp domineras av perspektivet att det är moraliskt fel att köpa någon annans kropp, att det inte är medieetiskt att intervjua en förövare på sättet TV4 gjorde och att det finns en efterfrågan på ställningstagande och/eller agendadriven journalistik. Till sist dras slutsatsen att uppsatsens författare sällar sig till den stora skara forskare som ser en demokratisk potential i deltagarjournalistik men känner besvikelse över att den i mångt och mycket går förlorad. / May the 14th of 2020 the Swedish celebrity Paolo Roberto spent the evening in an apartment in a fancy neighborhood in Stockholm with a woman from one of the poorest countries in Europe, and was caught in the act of purchasing sexual services from her. The star chef, actor and TV host confessed to the police later that night. In an interview the following day, Roberto himself says that he suspects the woman was not there willingly. The news of his crime generated strong reactions in comment sections on social media. The purpose of the study is to examine how users express themselves in comment sections under a controversial news article about an emotionally charged subject. We will therefore analyze how users in a particular comment section on Facebook reacted to the interview with Paolo Roberto in TV4. The thesis is interested in how participatory journalism contributes to the public discourse about the emotionally charged subject of sex purchases, as well as other discourses that we may encounter. The study aims to answer two research questions; one that examines what reactions the comment section contains and one that examines how these reactions can be understood in the light of discourses of prostitution and media ethics. The theorical framework of the essay is based on participatory journalism and discourse theory. The thesis is a qualitative text analysis and utilizes the textual analytical dimension of Anabela Carvalho’s apparatus for critical discourse analysis (2008). From the empirical material patterns have been identified and 12 of these were selected for deeper analysis. Some examples of these are that many describe Roberto’s behavior as “sobbing” and controlling the narrative. A large part of the comment section blames TV4 for “letting” him do this. Some challenge the ethics and editorial decision of TV4 while others disagree with the Swedish model for prostitution and the mainstream view on purchasing sex, which will quickly be confronted by others. The conclusions of the thesis are that the prostitution discourse is dominated by the perspective that it is morally wrong to purchase someone else’s body, that it is not ethical to interview a perpetrator the way TV4 did and that there is demand for agenda-driven journalism. Finally, the conclusion is drawn that the authors of the essay are part of the large majority of scientists who see a democratic potential in participatory journalism but are disappointed by the fact that it is not harnessed.