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Solitary bees and bumblebees have declined substantially throughout western Europe during the last 100 years. Many species are important pollinators and are associated with particular plant species and habitats. In this study we report the highest number of bee species found at one locality in Sweden (Table 2). In total 87 species of wild bees (74 species of solitary bees and 13 species of bumble
Popular Abstract in Swedish Avhandlingen behandlar reglering av Homogeneous Charge Compression Ignition (HCCI) motor dynamik. HCCI erbjuder möjligheten att kombinera hög effektivitet med väldigt låga emissioner. Återkopplad reglering är ett sätt att uppnå dessa mål. Avhandlingen diskuterar sensorer, återkopplingsvariabler och aktuatorer för sluten-loop reglering av HCCI förbränningen. Det är demoThe topic of the thesis is control of Homogeneous Charge Compression Ignition (HCCI) engine dynamics. HCCI offers a potential to combine high efficiency with very low emissions. In order to fulfill the potential benefits, closed-loop control is needed. The thesis discusses sensors, feedback signals and actuators for closed-loop control of the HCCI combustion. Closed-loop control of the HCCI combu
In the present work we have selected a collection of statistical and mathematical tools useful for the exploration of multivariate data and we present them in a form that is meant to be particularly accessible to a classically trained mathematician. We give self contained and streamlined introductions to principal component analysis, multidimensional scaling and statistical hypothesis testing. Wit
Demands for efficient, greener, economical and sustainable production of chemicals, materials and energy have led to development of industrial biotechnology as a key technology area to provide such products from bio-based raw materials from agricultural-, forestry- and related industrial residues and by-products. For the bio-based industry, it is essential to develop a number of building blocks or
Efter HSVs utvärdering av CI- utbildningarna fick högskolorna ett tydligt uppdrag att vid uppföljningen redovisa hur hållbar utveckling kommer in i utbildningarna. I planeringsförutsättningarna för de 5-åriga civilingenjörsutbildningarna vid LTH finns kravet på examination av minst 6 hp inom området.
The paper describes a novel method for self tuning cylinder pressure based heat release computation that is suitable for online usage in e.g. combustion phasing control applications. The method estimates the polytropic exponents and cylinder pressure offsets immediately preceding and succeeding the combustion event respectively using a fast nonlinear least squares method. The polytropic exponent a
Embedded systems are a characteristic but intangible part of an embedding environment. This poses a severe testing problem that gets further aggravated in embedded networks. The co-presence of hardware and software needs both behavioral and structural aspects to be covered, preferably by a single on-chip paradigm. The paper investigates the potential role of neural networks and introduces a Built-
Abstract is not available
https://rwi.lu.se/news-tags/climate-change/ - 2026-07-11
https://rwi.lu.se/tag/turkey/page/3/ - 2026-07-10
Abstract in Danish Formål: Formålet er at beskrive tuberkulosens (tbc.) epidemiologi i Danmark de sidste 25 år, specielt udviklingen i den danske befolkning. Metode: Et registerstudie af anmeldte tilfælde af tbc. i Danmark 1972-1996: Fra 1970-1989 i DIKE's register, fra 1990-1996 i EPI-registeret, epidemiologisk afd., Statens Serum Institut. Resultater: tbc.-incidensen faldt jævnt fra 1972 indtiThe present study is based on notified cases of tuberculosis (TB) in the National tbc. register 1972-1996. A decline in Tb incidence was seen from 1972 and until the mid-1980's. Subsequently the trend has reversed due to an increasing number of TB cases in foreigners. In 1996, 60% of all cases of TB in Denmark were found in foreigners reflecting the rising number of refugees and their families arr
