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[NiFe] hydrogenases catalyse the reaction H2 <-> 2H(+) + 2e(-). Several states of the enzyme have been observed by spectroscopic methods. Among these, the two most oxidized states, called the unready Ni-A and Ni-SU states, have been especially intriguing, because they take a much longer time to activate than the corresponding ready Ni-B and Ni-SI states. It has recently been suggested that the unr
Nitrogenase is the only enzyme that can cleave the strong triple bond inN2. The active site contains a complicated MoFe7S9C cluster. It is believed that itneeds to accept four protons and electrons, forming the E4 state, before it can bind N2.However, there is no consensus on the atomic structure of the E4 state. Experimentalstudies indicate that it should contain two hydride ions bridging two pai
For model-based quantitative reconstructions of past vegetation cover on the scale of landscapes, pollen productivity estimates (PPEs) are key input parameters. In this study, we employed a random sampling strategy to collect moss polsters at 20 sites in Changbai Mountain, northeastern China. A detailed vegetation survey within 1000-m radius around each sampling point was carried out and digitized
Background: A wrist-worn wearable device for acquiring limb and chest ECG leads (wECG) may constitute a promising approach to detection of acute myocardial infarction (AMI). However, it remains to be demonstrated whether the information conveyed by the wECG is sufficient for AMI detection. Objective: To explore explainable machine learning models for detecting AMI using the wECG. Methods: Two type
Motivation: Comparisons of microbiome communities across populations are often based on pairwise distance measures (beta-diversity). Standard analyses (principal coordinate plots, permutation tests, kernel methods) require access to primary data if another investigator wants to add or compare independent data. We propose using standard reference measurements to simplify microbiome beta-diversity a
The design of port complexes is a process that requires considering geographical and economic features of the territory. It is necessary to aggregate the characteristics of coastal landscapes, seascapes, artificial elements, dangerous objects, etc. The experience of implementing such projects (for example, in Sabetta) suggests that all participants in the design process need highly precise geograp
Introduction: Due to the high cost and complexity, the oral glucose tolerance test is not adopted as the screening method for identifying diabetes patients, which leads to the misdiagnosis of patients with isolated post-challenge hyperglycemia (IPH), that is., patients with normal fasting plasma glucose (<7.0 mmoL/L) and abnormal 2-h postprandial blood glucose (≥11.1 mmoL/L). We aimed to develop a
This paper examines the small-sample performance of several information based criteria that can be employed to facilitate data dependent endogeneity correction in estimation of cointegrated panel regressions. The Monte Carlo evidence suggests that the criteria generally perform well but that there are differences of practical importance. In particular, the evidence suggests that, although the esti
PowerPoint Presentation Communication plan – simplified template Faculty of medicine 2025 Plan your communication – 4Ws When you do something that affects other people, you need to communicate. Sometimes you may need a plan for your communication. It can be about how to most appropriately communicate a new education course, a research project, an organisational change or a new IT system. An easy w
https://www.intramed.lu.se/en/sites/intramed.lu.se.en/files/2025-08/Communication_plan_template_0.pptx - 2026-07-16
This master's thesis explores the improvement of loudspeaker characteristics by using digital signal processing. The main aim of the thesis is to improve the overall audio quality with regards to limited processing power and power supply. Improving the audio quality is important since the vast expansion of the usage of loudspeakers has led to demands on cost, size and design choices all leadin
Traditionellt produceras trähus högst i två våningar p.g.a. historiskt svårkontrollerade brän-der. Idag är byggtekniken utvecklad och det är tillåtet att bygga trähus i flera våningar. Andel trähus som byggs med prefabricerade delar ökar idag i Sverige. Genom att producera montagefärdiga element i varierande storlek förflyttas husproduktionen från byggarbetsplats till fabrik. Syftet med studien äTraditionally, wooden houses are produced with a maximum of two floors, due to historical difficulties to control fires. Today, construction technology is developed so far that it is con-sidered safe to build wooden houses with additional floors. The percentage of wooden houses built with prefabricated parts is increasing in Sweden today. By producing module elements in various sizes, house produc
A novel detection algorithm with an efficient VLSI architecture featuring efficient operation over infinite complex lattices is proposed. The proposed design results in the highest throughput, the lowest latency, and the lowest energy compared to the complex-domain VLSI implementations to date. The main innovations are a novel complex-domain means of expanding/visiting the intermediate nodes of th
Different simple methods for evaluating the diffusivity from a sorption measurement are presented and tested when there is a surface resistance (a limited mass transfer coefficient), a non-perfect step in relative humidity or non-Fickian effects. It is concluded that the different methods have different qualities and it is impossible to give a general recommendation on which method to use. The bes
Omskärelsen som företeelse har sina rötter årtusenden tillbaka i tiden och genomförs runt om i världen av olika skäl. Den religiöst motiverade omskärelsen på minderåriga pojkar är tillåten i Sverige genom lag (2001:499) om omskärelse av pojkar (OmskL). Lagens utformning underbyggs av argument avseende religionsfrihet och vårdnadshavarens rätt att uppfostra sina barn i enlighet med deras religiösa The phenomenon of circumcision dates thousands years back and is performed all around the world for various reasons. The religiously motivated circumcision of underage boys has been permitted in Sweden under the law on circumcision of boys from 2001. The formulation of the law is underpinned by arguments relating to religious freedom and the right of custodians to raise their children in accordanc
Mer än 10% av Sveriges befolkning lider av någon fobi och detta projekt studerar möjligheten att lindra akrofobi (höjdskräck) med hjälp av virtual reality (VR). Arbetets syfte är därför att undersöka hur man på bästa sätt kan lindra akrofobi med hjälp av VR. Frågeställningarna som skulle besvaras var: ”Kan man med hjälp av enbart visuell och auditiv feedback skapa en trovärdig miljö för att lindra
