Search results

Mineral evolution is concerned with the timing of mineral occurrences, such as the earliest reported occurrences in the geologic record. Minerals containing essential Li have not been reported from rocks older than ca. 3000 Ma, thus the lithian tourmaline (fluor-elbaite) and mica (lepidolite) assemblage from a pegmatite near Zishineni associated with the ca. 3000 Ma Sinceni Pluton presents unusual

AIMS: There is considerable controversy regarding optimal management of patients with paraesophageal hiatus hernia (pHH). This survey aims at identifying recommended strategies for work-up, surgical therapy, and postoperative follow-up using Delphi methodology.METHODS: We conducted a 2-round, 33-question, web-based Delphi survey on perioperative management (preoperative work-up, surgical procedure

Objectives: To evaluate how surgeon heterogeneity – the variation in outcomes between individual surgeons – influences functional and oncological outcomes after robot-assisted laparoscopic prostatectomy (RALP) and retropubic radical prostatectomy (RRP), and to assess whether surgeon heterogeneity affects the comparison between RALP and RRP. Patients and Methods: Laparoscopic Prostatectomy Robot Op

Background Oral contraceptives were introduced almost 50 years ago, and over 100 million women currently use them. Oral contraceptives can reduce the risk of ovarian cancer, but the eventual public-health effects of this reduction will depend on how long the protection lasts after use ceases. We aimed to assess these effects. Methods Individual data for 23 257 women with ovarian cancer (cases) a

The purpose of the research presented in this thesis is to enhance the field of accessibility to include a multitude of perspectives. Based on cultural-historical activity theory (CHAT), it analyzes how human, artifactual and natural factors impact an individual’s possibilities to act in concrete situations that are part of a systemic whole.The thesis presents two main results:An enhanced accessib

Popular Abstract in Swedish I atmosfären finns mikroskopiskt små luftburna partiklar. Till skillnad från makroskopiska partiklar sedimenterar dessa så kallade ’aerosol-partiklar’ så sakta att de följer med den omgivande luftens rörelser. I atmosfärens nedre luftlager (troposfären) avlägsnas aerosolpartiklarna från atmosfären av nederbörd. Partiklarna deponerar därför inom någon vecka. Ovanför tropThis thesis focuses on the influence of volcanism on the compositions of the aerosols in the upper troposphere (UT) and lowermost stratosphere (LMS), and their direct and indirect impact on climate. Aerosol data were obtained by aircraft-borne sampling, using the CARIBIC (Civil Aircraft for the Regular Investigation of the Atmosphere Based on an Instrument Container) platform, and laboratory-based

INTRODUCTION: Branched iliac stent-grafts (bSG) have recently been developed in order to preserve internal iliac artery (IIA) flow in patients with aneurysmal or short common iliac arteries. The aim of this study is to evaluate a single-center experience with bSG for the IIA. METHODS: Twenty-two male patients (70 (IQR 65-79) years old) underwent EVAR with 23 bSG (1 bilateral repair) between Septem

En grundvattenundersökning i ett område präglat av vattenrelaterade problem. Staden Cochabamba i Bolivia står inför flera vattenrelaterade utmaningar såsom brist på ytvatten, en ökande vattenanvändning, urbanisering och en sjunkande grundvattennivå. Samtidigt råder det en brist på kunskap angående de processer som påverkar grundvattnet i området. Något som detta examensarbete ämnar att förändra. The Central Valley of Cochabamba is located in the Andes mountain range, Bolivia. This region experiences several water related challenges such as a scarcity of surface water, an increasing water demand, a growing urbanization in groundwater recharge areas, and a declining water table due to intensive groundwater extraction. The valley has been influenced by both alluvial and fluvial depositions t

OBJECTIVES: The primary aim of this study was to describe the ultrasound features of various endometrial and other intracavitary pathologies in women without abnormal uterine bleeding (AUB) using the International Endometrial Tumor Analysis (IETA) terminology. The secondary aim was to compare our findings with published data on women with AUB. METHODS: This was a prospective observational study of

Background: Individuals with type 2 diabetes (T2D) are at increased risk of developing cardiovascular disease (CVD) which necessitates monitoring of risk factors and appropriate pharmacotherapy. This study aimed to identify factors predicting emergency department visits, hospitalizations, and mortality among T2D patients after being newly diagnosed with CVD. Methods: In a retrospective observation

Alla dör, men våra upplevelser av livets slut ser olika ut beroende på hur vårt liv och våra relationer sett ut. Denna avhandling undersöker hur genus, ålder och relationer påverkar människors erfarenheter och möjligheter under livets slutskede. I en tid då såväl hälso- och sjukvårdssystemen som informellt vård- och omsorgsgivande är satta under press är det extra viktigt att utveckla kunskap om hThe way that we die and care for the dying today is changing, related to extended life expectancy, neoliberalization, as well as shifting caring roles in relation to gender. In a time of “care crisis”, both formal and informal care resources are under duress, making the question of how to provide “a good death” complex and contested in new ways. Scholars in public health have posited a health prom

BACKGROUND: We hypothesized that the main barriers to integrating exercise in routine care of patients with chronic kidney disease (CKD) were structural within European healthcare systems rather than due to resistance among healthcare professionals or patients.MATERIALS AND METHODS: This descriptive cross-sectional study used anonymized questionnaires to investigate nurses' and physicians' attitud

Background Previous studies of minimally invasive liver surgery described results and experiences in high-volume centres and early adopters, but data on national levels are lacking. This study evaluated the implementation and outcomes of minimally invasive liver surgery in Sweden over a 15-year period, with a focus on colorectal liver metastases. Methods Data from patients undergoing liver surgery

Long-distance migrants face numerous challenges during their migration, with the spring migration timing being particularly important, as early arrival at the breeding grounds often enhances breeding success. Both innate and environmental factors influence migration timing in birds, and the earlier arrival of males than females is common among songbirds breeding in temperate zones. The great reed

This study makes a numeric and visual comparison of two different multibeam echo sounding (MBES) surveys performed at the exact same location, in an effort to establish how reliable and comparable the vertical depth measurements are. The horizontal position uncertainty is not issued in this study. The analysis was performed on data delivered by two survey contractors, The Norwegian Coastal Admini

This thesis explores how the politics of cyber conflict redefine violence, sovereignty, and territory in and through cyberspace. It does this by studying how the digital mediates different facets and experiences of conflict and security in Palestine. Through a comprehensive and context-informed approach, this research theorizes cyber conflict as a phenomenon spanning beyond the conventional sites,

This paper is about interdisciplinary common initiatives to enhance and encourage quality of engineering education nationwide, by means of a scientific approach to teaching. To reach innovative pedagogical approaches it is seen as important to stimulate collaboration and knowledge sharing across discipline borders. STEM, referring to the academic disciplines of science, technology, engineering, an

Mycket forskarmöda har ägnats åt den stora reduktionen i början av 1680-talet, då den svenska adelns förläningar drogs in till kronan och maktbalansen skiftade till den enväldige kungens fördel. Denna forskning har framför allt behandlat den politiska och ekonomiska utvecklingen, ofta ur ett elitperspektiv. Andra gruppers agerande och levda verklighet har sällan blivit belysta, vilket inte minst gA large body of scholarly work has been dedicated to the Swedish reduction in the early 1680s when fiefs granted to the nobility were revoked as the crown strengthened its position. However, this research has focused on political and economic developments from an elite perspective. Insufficient attention has been paid to the actions and lived realities of other groups, not least the servants of th

Varför kommer inte studenterna på undervisningen?Många lärare på LTH har frågat sig detta eftersom vi ser en tydlig negativ trend: antalet studenter som närvarar på campusförlagda föreläsningar och övningar i grundutbildningen minskar för varje år som går. Eftersom studentnärvaro länge har setts som en nyckelfaktor för studieframgång, kommer det inte som en överraskning att många inom högre utbildThe importance of attendance in higher education has for decades been stressed forstudent performance. However, student absenteeism has in recent years been a growingconcern globally – including in engineering education. Meanwhile, the educationalenvironment has been influenced by the rise of digital learning resources, acceleratedby distance education during COVID-19 pandemic. The changed behavio

Most nitrogen and phosphorus transported by world rivers to the oceans is associated with dissolved organic matter. However, organic matter as a potential source of N and P has hitherto been largely neglected in studies of coastal microbial food webs. We examined 50 rivers, draining a major part of the Baltic Sea watershed, with respect to summer concentrations, chemical composition, and biologica