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The asymmetric formal hydroamination of enamines using a CuH catalyst is reported. The method provides a straightforward and efficient approach to the synthesis of chiral 1,2-dialkyl amines in good yields with high levels of enantioselectivities for a broad range of substrates, and should have significant value for the preparation of molecules bearing a 1,2-diamine motif.
Många föräldrar upplever svårigheter med sitt barns ätande någon gång under de första åren. Orsakerna till ätsvårigheter kan vara många och skiftande, och av både medicinsk och psykosocial karaktär. I boken går författaren igenom olika anledningar till barns ätsvårigheter, och ger en mängd praktiska tips och råd om hur man på kort och lång sikt kan hjälpa sitt barn att känna matglädje och på så sä
This paper proposes a first-principle model of GPS receivers, that allows us to exploit the trade-off between battery consumption and positioning accuracy. We present the model and propose a GPS sampling strategy that uses both the current positioning confidence, and information about the GPS status. We complement the GPS sensor with internal measurement units and show how the given model exposes
Cleaning coils can be an efficient way to reduce the need for reparations and maintain the functionality of a ventilation system. This study builds upon existing knowledge concerning the contamination of heat exchangers. Through field measurements on coils and heat-recovery units, a laboratory experiment on a coil, and a generic calculation example, this study determines the impact of sustained co
Polyacrylamide beads and celite were used for immobilization of bovine α-chymotrypsin and lipase B from Candida antarctica. Polyacrylamides with a high degree of cross-linking afforded high catalytic rates when used as immobilization matrices. Derivatization of the polymer with carboxyl and tertiary amino groups prior to immobilization caused no significant changes in α-chymotrypsin behavior. The
#100. ASEAN Voices, for erhu and 10 mixed ASEAN ensemble players (2017). Premiere: Premiered by C asean Consonant (an ASEAN traditional ensemble), during the 2017 China-ASEAN Music Week at the Guangxi University of the Arts on May 27, 2017. The conductor was Knote KnocKnote with erhu soloist Hu Liu.
We define and study the polarization sets for vector-valued distributions. Systems of real principal type are defined, and we prove that for such systems of pseudodifferential operators we have a unique propagation of the polarization sets for the solutions.
Is low-cost tracking precise enough for recognition of pointing actions? We investigate the quality of the human body tracking available with a Kinect camera by comparing it to a state-of-the-art motion capture system. The application is action recognition with parametric hidden Markov Models (PHMMs) for programming industrial robots. The data from the Kinect is overall more noisy and potentially
Dysfunction of the gastrointestinal tract has now been recognized to affect all stages of Parkinson's disease (PD). The consequences lead to problems with absorption of oral medication, erratic treatment response, as well as silent aspiration, which is one of the key risk factors in developing pneumonia. The issue is further complicated by other gut abnormalities, such as small intestinal bacteria
Detta är en kort rapport inom projektet ”Mätsystem för förändringsarbete”, utfört vid Institutionen för teknisk ekonomi och logistik vid Lunds Tekniska Högskola. Rapporten skall ses som ett komplement till slutrapporten ”Mätning av förändringsarbete: Utveckling och implementering av ett mätsystem för att mäta förändringstemperatur”.Projektet syftade till att ta fram ett ramverk för förändringsarbe
Emboldened by the aesthetic,- emotional-, and corporeal turns in the study of world politics, International Relations (IR) scholars are increasingly paying attention to the political dimension of affects and emotions. Yet while, so far, affect and emotions have been studied as (micro-political) forces that circulate between bodies in the context of the everyday, little attention has been given to
BACKGROUND: Several therapies are available for psoriasis, including in some countries oral fumaric acid derivatives (FADs). Even if FADs are not available in the Italian market, they can be prescribed and reimbursed by the National Health Service, on request from the treating physician, when considered as a valuable option in selected patient.METHODS: We performed a retrospective analysis of the
Living in a complex and dynamically changing environment requires accurate and timely behavioural responses that allow for adapting to such changes. Well-developed perceptual systems provide a continuous flow of abundant and up-to-date information on the changes in the environment, and, thereby, allow for tailoring behavioural responses accordingly. However, issuing any behavioral response would n
BACKGROUND: EndoVAC hybrid therapy for infected femoral artery reconstructions consists of endovascular relining with a stent graft, surgical debridement and vacuum-assisted wound closure (VAC), and may be considered as a bailout procedure. The aim of this study was to analyze differences in risk factors of patients receiving EndoVAC compared to standard VAC therapy for perivascular infected femor
Buildings are one of the largest consumers of energy and materials, and hence they are also one of the largest contributors to negative environmental impacts. Traditionally, energy consumed by buildings during their operation phase was the most significant in their lifecycles and far exceeded the embodied energy. However, in contemporary low-energy buildings, the embodied energy is proportionally
We address H-infinity state feedback and give a simple form for an optimal control law applicable to linear time invariant systems with symmetric and Hurwitz state matrix. More specifically, the control law as well as the minimal value of the norm can be expressed in the matrices of the system's state space representation, given separate cost on state and control input. Thus, the control law is tr
