Electron spin resonance in Eu-based iron pnictides

Krug von Nidda, H.-A.,Kraus, S.,Schaile, S.,Dengler, E.,Pascher, N.,Hemmida, M.,Eom, M. J.,Kim, J. S.,Jeevan, H. S.,Gegenwart, P.,Deisenhofer, J.,Loidl, A. American Physical Society 2012 Physical review. B, Condensed matter and materials Vol.86 No.9

The three-dimensional structure of TrmB, a transcriptional regulator of dual function in the hyperthermophilic archaeon Pyrococcus furiosus in complex with sucrose

Krug, M.,Lee, S.-J.,Boos, W.,Diederichs, K.,Welte, W. John Wiley Sons, Ltd 2013 Protein science Vol.22 No.6

Strengthening Health Systems to Provide Rehabilitation Services

Etienne Krug,Alarcos Cieza 대한재활의학회 2017 Annals of Rehabilitation Medicine Vol.41 No.2

Optimizing the Local Embedding of Renewable Energy Plants

Michael Krug,Dörte Ohlhorst 한국환경정책학회 2019 環境政策 Vol.27 No.S

In this article we ask about the factors that promote acceptance of local renewable energy plants and about the specific role nature conservation plays in the concert of other acceptance factors. We explored to what extent trade-offs between climate protection, nature and species protection, protection of local residents and local value creation can be realigned. The article provides an overview of the key acceptance factors identified and derives a set of trust and acceptance building measures. It has a specific focus on wind energy. Our findings suggest that nature conservation rationales have definitively a role to play as a local acceptance factor, but other acceptance factors are closely linked or more important. Particularly, economic factors, the attitudes towards the energy transition, trust in key actors and planning and development processes were identified as key preconditions for local acceptance.

Mutations of CEP83 Cause Infantile Nephronophthisis and Intellectual Disability

Failler, M.,Gee, H.,Krug, P.,Joo, K.,Halbritter, J.,Belkacem, L.,Filhol, E.,Porath, Jonathan D.,Braun, Daniela A.,Schueler, M.,Frigo, A.,Alibeu, O.,Masson, C.,Brochard, K.,Hurault de Ligny, B.,Novo, R University of Chicago Press [etc.] 2014 American journal of human genetics Vol.94 No.6

Ciliopathies are a group of hereditary disorders associated with defects in cilia structure and function. The distal appendages (DAPs) of centrioles are involved in the docking and anchoring of the mother centriole to the cellular membrane during ciliogenesis. The molecular composition of DAPs was recently elucidated and mutations in two genes encoding DAPs components (CEP164/NPHP15, SCLT1) have been associated with human ciliopathies, namely nephronophthisis and orofaciodigital syndrome. To identify additional DAP components defective in ciliopathies, we independently performed targeted exon sequencing of 1,221 genes associated with cilia and 5 known DAP protein-encoding genes in 1,255 individuals with a nephronophthisis-related ciliopathy. We thereby detected biallelic mutations in a key component of DAP-encoding gene, CEP83, in seven families. All affected individuals had early-onset nephronophthisis and four out of eight displayed learning disability and/or hydrocephalus. Fibroblasts and tubular renal cells from affected individuals showed an altered DAP composition and ciliary defects. In summary, we have identified mutations in CEP83, another DAP-component-encoding gene, as a cause of infantile nephronophthisis associated with central nervous system abnormalities in half of the individuals.

<i>δ</i>-exceedance records and random adaptive walks

Park, Su-Chan,Krug, Joachim IOP 2016 JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL Vol.49 No.31

<P>We study a modified record process where the <I>k</I>th record in a series of independent and identically distributed random variables is defined recursively through the condition <img ALIGN='MIDDLE' ALT='${Y}_{k}\gt {Y}_{k-1}-{\delta }_{k-1}$' SRC='http://ej.iop.org/images/1751-8121/49/31/315601/jpaaa2634ieqn1.gif'/> with a deterministic sequence <img ALIGN='MIDDLE' ALT='${\delta }_{k}\gt 0$' SRC='http://ej.iop.org/images/1751-8121/49/31/315601/jpaaa2634ieqn2.gif'/> called the handicap. For constant <img ALIGN='MIDDLE' ALT='${\delta }_{k}\equiv \delta $' SRC='http://ej.iop.org/images/1751-8121/49/31/315601/jpaaa2634ieqn3.gif'/> and exponentially distributed random variables it has been shown in previous work that the process displays a phase transition as a function of <I>δ</I> between a normal phase where the mean record value increases indefinitely and a stationary phase where the mean record value remains bounded and a finite fraction of all entries are records (Park <I>et al</I> 2015 <I>Phys. Rev.</I> E <A HREF='http://dx.doi.org/10.1103/PhysRevE.91.042707'> <B>91</B> 042707</A>). Here we explore the behavior for general probability distributions and decreasing and increasing sequences <img ALIGN='MIDDLE' ALT='${\delta }_{k}$' SRC='http://ej.iop.org/images/1751-8121/49/31/315601/jpaaa2634ieqn4.gif'/>, focusing in particular on the case when <img ALIGN='MIDDLE' ALT='${\delta }_{k}$' SRC='http://ej.iop.org/images/1751-8121/49/31/315601/jpaaa2634ieqn5.gif'/> matches the typical spacing between subsequent records in the underlying simple record process without handicap. We find that a continuous phase transition occurs only in the exponential case, but a novel kind of first order transition emerges when <img ALIGN='MIDDLE' ALT='${\delta }_{k}$' SRC='http://ej.iop.org/images/1751-8121/49/31/315601/jpaaa2634ieqn6.gif'/> is increasing. The problem is partly motivated by the dynamics of evolutionary adaptation in biological fitness landscapes, where <img ALIGN='MIDDLE' ALT='${\delta }_{k}$' SRC='http://ej.iop.org/images/1751-8121/49/31/315601/jpaaa2634ieqn7.gif'/> corresponds to the change of the deterministic fitness component after <I>k</I> mutational steps. The results for the record process are used to compute the mean number of steps that a population performs in such a landscape before being trapped at a local fitness maximum.</P>

Strong reduction of the Korringa relaxation in the spin-density wave regime ofEuFe2As2observed by electron spin resonance

Dengler, E.,Deisenhofer, J.,Krug von Nidda, H.-A.,Khim, Seunghyun,Kim, J. S.,Kim, Kee Hoon,Casper, F.,Felser, C.,Loidl, A. American Physical Society 2010 Physical review. B, Condensed matter and materials Vol.81 No.2

Optical and Magnetic Properties of MBE-Grown Manganese Sulfide Layers

W. Heimbrodt,L. Chen,H.-A. Krug Von Nidda,A. Loidl,P. J. Klar,L. David,K. A. Prior 한국물리학회 2008 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.53 No.5

Metastable zinc-blende MnS layers of various thicknesses from 1:8 nm to 8:6 nm have been grown by molecular beam epitaxy on (100) GaAs between ZnSe cladding layers. We studied the dependences of the optical and the magnetic properties on the layer thickness. On the one hand, the non-exponential decay of the Mn internal transition is found to be faster for thick erlayer,which is a size effect and not caused by the interfaces. On the other hand, the Neel-temperature is not altered with decreasing layer thickness, but the phase-transition-induced shift of the internal Mn transitions is smaller for thinnerMnSlayers. Thisisexplainedbythedominatingin uenceofMn ions at the interface, which possess a reduced number of Mn neighbors. SQUID measurements in a weak external magnetic eld conrm the optical observations in zero field. However, applying a strong magnetic field reveals the metamagnetic character of these zinc-blende MnS layers. An antiferromagnetic-to-erromagnetic phase transitionis found with increasing external field. Metastable zinc-blende MnS layers of various thicknesses from 1:8 nm to 8:6 nm have been grown by molecular beam epitaxy on (100) GaAs between ZnSe cladding layers. We studied the dependences of the optical and the magnetic properties on the layer thickness. On the one hand, the non-exponential decay of the Mn internal transition is found to be faster for thick erlayer,which is a size effect and not caused by the interfaces. On the other hand, the Neel-temperature is not altered with decreasing layer thickness, but the phase-transition-induced shift of the internal Mn transitions is smaller for thinnerMnSlayers. Thisisexplainedbythedominatingin uenceofMn ions at the interface, which possess a reduced number of Mn neighbors. SQUID measurements in a weak external magnetic eld conrm the optical observations in zero field. However, applying a strong magnetic field reveals the metamagnetic character of these zinc-blende MnS layers. An antiferromagnetic-to-erromagnetic phase transitionis found with increasing external field.

Conditions Enhancing the Socially Inclusive and Environmentally Sound Uptake of Wind Energy: The Case of Germany

Maria Rosaria Di Nucci,Michael Krug 한국환경정책학회 2018 環境政策 Vol.26 No.S

This paper discusses the framework conditions to promote the socially inclusive and environmentally sound uptake of renewable energy with a special focus on wind power in Germany and on the policy framework of the European Union (EU). The analysis of these aspects relates to the achievement of one of the Sustainable Development Goals, namely SDG 7 (affordable and clean energy). Wind power plays an important role for mastering the energy transition, but in many countries of the EU, wind energy has become a subject of contested debates. Besides geographic, market, policy, and other factors which affect the implementation of wind energy projects, low levels of market deployment can also be attributed to a diminishing social acceptance and growing local opposition. This is mostly due to the visual impact, noise annoyance, public perception of health risks, local environmental disruption harming local fauna and flora, potentially negative impact on recreation and tourism, or land and real property values as well as to perceived procedural or distributional injustice including affordability of electricity prices, and insufficient public participation. The paper provides insights from an ongoing research project supported by the European Commission under the research programme Horizon 2020. The WinWind Project identifies similarities and differences between regions in five EU countries and in Norway highlighting barriers and drivers for the uptake of wind energy. The paper analyses the European and the German policy frameworks, social acceptance barriers and drivers in two regions of East Germany, and describes promising approaches that drive social acceptance and enhance the environmentally sound uptake of wind energy projects.

Greedy adaptive walks on a correlated fitness landscape

Park, S.C.,Neidhart, J.,Krug, J. Academic Press 2016 Journal of theoretical biology Vol.397 No.-

<P>We study adaptation of a haploid asexual population on a fitness landscape defined over binary genotype sequences of length L. We consider greedy adaptive walks in which the population moves to the fittest among all single mutant neighbors of the current genotype until a local fitness maximum is reached. The landscape is of the rough mount Fuji type, which means that the fitness value assigned to a sequence is the sum of a random and a deterministic component. The random components are independent and identically distributed random variables, and the deterministic component varies linearly with the distance to a reference sequence. The deterministic fitness gradient c is a parameter that interpolates between the limits of an uncorrelated random landscape (c=0) and an effectively additive landscape (c ->infinity). When the random fitness component is chosen from the Gumbel distribution, explicit expressions for the distribution of the number of steps taken by the greedy walk are obtained, and it is shown that the walk length varies non-monotonically with the strength of the fitness gradient when the starting point is sufficiently close to the reference sequence. Asymptotic results for general distributions of the random fitness component are obtained using extreme value theory, and it is found that the walk length attains a non-trivial limit for L ->infinity, different from its values for c=0 and c ->infinity, if c is scaled with L in an appropriate combination. (C) 2016 Elsevier Ltd. All rights reserved.</P>