@article{Zass2021, author = {Zass, Alexander}, title = {Gibbs point processes on path space}, series = {Markov processes and related fields}, volume = {28}, journal = {Markov processes and related fields}, number = {3}, publisher = {Polymat}, address = {Moscow}, issn = {1024-2953}, doi = {10.20347/WIAS.PREPRINT.2859}, pages = {329 -- 364}, year = {2021}, abstract = {We present general existence and uniqueness results for marked models with pair interactions, exemplified through Gibbs point processes on path space. More precisely, we study a class of infinite-dimensional diffusions under Gibbsian interactions, in the context of marked point configurations: the starting points belong to R-d, and the marks are the paths of Langevin diffusions. We use the entropy method to prove existence of an infinite-volume Gibbs point process and use cluster expansion tools to provide an explicit activity domain in which uniqueness holds.}, language = {en} } @article{Yaka2021, author = {Yaka, {\"O}zge}, title = {Migration and democracy: Reclaiming democracy from its nativist/nationalist closure 1}, series = {The condition of democracy. - Volume 2: Contesting citizenship}, journal = {The condition of democracy. - Volume 2: Contesting citizenship}, editor = {Mackert, J{\"u}rgen and Wolf, Hannah and Turner, Bryan S.}, publisher = {Routledge}, address = {Abingdon}, isbn = {978-0-367-74536-3}, pages = {54 -- 68}, year = {2021}, abstract = {In the last few years, we have been increasingly experiencing a discursive and practical use of the existing democratic structures as an instrument of anti-immigration anxiety and sentiment, from electoral support to right-wing populist parties to anti-immigrant, xenophobic, and/or racist mobilizations in and beyond the Western world. This article argues that the origins and political histories that the concepts of demos and democracy stand on provide a firm ground to resist the attempts at their current nativist/nationalist closure. Contesting the attempts to reduce the concepts of democracy and demos to strictly limited or ethnically defined populations, the article develops a political argument that relates democracy and migration, which have been represented as opposite poles within the current political map defined by the populist surge.}, language = {en} } @article{ZhelavskayaAseevShprits2021, author = {Zhelavskaya, Irina and Aseev, Nikita and Shprits, Yuri}, title = {A combined neural network- and physics-based approach for modeling plasmasphere dynamics}, series = {JGR / AGU, American Geographical Union. Space Physics}, volume = {126}, journal = {JGR / AGU, American Geographical Union. Space Physics}, number = {3}, publisher = {Wiley}, address = {Hoboken, NJ}, issn = {2169-9380}, doi = {10.1029/2020JA028077}, pages = {30}, year = {2021}, abstract = {Abstract In recent years, feedforward neural networks (NNs) have been successfully applied to reconstruct global plasmasphere dynamics in the equatorial plane. These neural network-based models capture the large-scale dynamics of the plasmasphere, such as plume formation and erosion of the plasmasphere on the nightside. However, their performance depends strongly on the availability of training data. When the data coverage is limited or non-existent, as occurs during geomagnetic storms, the performance of NNs significantly decreases, as networks inherently cannot learn from the limited number of examples. This limitation can be overcome by employing physics-based modeling during strong geomagnetic storms. Physics-based models show a stable performance during periods of disturbed geomagnetic activity if they are correctly initialized and configured. In this study, we illustrate how to combine the neural network- and physics-based models of the plasmasphere in an optimal way by using data assimilation. The proposed approach utilizes advantages of both neural network- and physics-based modeling and produces global plasma density reconstructions for both quiet and disturbed geomagnetic activity, including extreme geomagnetic storms. We validate the models quantitatively by comparing their output to the in-situ density measurements from RBSP-A for an 18-month out-of-sample period from June 30, 2016 to January 01, 2018 and computing performance metrics. To validate the global density reconstructions qualitatively, we compare them to the IMAGE EUV images of the He+ particle distribution in the Earth's plasmasphere for a number of events in the past, including the Halloween storm in 2003.}, language = {en} } @article{ShikangalahMapaniMapaureetal.2021, author = {Shikangalah, Rosemary and Mapani, Benjamin and Mapaure, Isaac and Herzschuh, Ulrike}, title = {Responsiveness of Dichrostachys cinerea to seasonal variations in temperature and rainfall in central Namibia}, series = {Flora}, volume = {286}, journal = {Flora}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0367-2530}, doi = {10.1016/j.flora.2021.151974}, pages = {7}, year = {2021}, abstract = {Woody plants provide natural archives of climatic variation which can be investigated by applying dendroclimatological methods. Such studies are limited in Southern Africa but have great potential of improving our understanding of past climates and plant functional adaptations in the region. This study therefore investigated the responsiveness of Dichrostachys cinerea to seasonal variations in temperature and rainfall at two sites in central Namibia, Waterberg and Kuzikus. Dichrostachys cinerea is one of the encroacher species thriving well in Namibia. A moving correlation and response function analysis were used to test its responsiveness to seasonal climatic variations over time. Dichrostachys cinerea growth rings showed relationships to late summer warming, lasting up to half of the rainy season. The results also revealed that past temperatures had been fluctuating and their influence on growth rings had been intensifying over the years, but to varying extents between the two sites. Temperature was a more important determinant of ring growth at the drier site (Kuzikus), while rainfall was more important at the wetter site (Waterberg). Growth ring responsiveness to rainfall was not immediate but showed a rather lagged pattern. We conclude that D. cinerea differentially responds to variations in rainfall and temperature across short climatic gradients. This study showed that the species, due to its somewhat wide ecological amplitude, has great potential for dendroclimatological studies in tropical regions.}, language = {en} } @article{RomeroBarbosaCoelhoScheiffeleetal.2021, author = {Romero Barbosa, Lu{\´i}s and Coelho, Victor Hugo R. and Scheiffele, Lena and Baroni, Gabriele and Ramos Filho, Geraldo M. and Montenegro, Suzana M. G. L. and Das Neves Almeida, Cristiano and Oswald, Sascha}, title = {Dynamic groundwater recharge simulations based on cosmic-ray neutron sensing in a tropical wet experimental basin}, series = {Vadose zone journal : VZJ : advancing critical zone science}, volume = {20}, journal = {Vadose zone journal : VZJ : advancing critical zone science}, number = {4}, publisher = {Wiley}, address = {Hoboken}, issn = {1539-1663}, doi = {10.1002/vzj2.20145}, pages = {22}, year = {2021}, abstract = {Although cosmic-ray neutron sensing (CRNS) is probably the most promising noninvasive proximal soil moisture measurement technique at the field scale, its application for hydrological simulations remains underexplored in the literature so far. This study assessed the use of CRNS to inversely calibrate soil hydraulic parameters at the intermediate field scale to simulate the groundwater recharge rates at a daily timescale. The study was conducted for two contrasting hydrological years at the Guaraira experimental basin, Brazil, a 5.84-km(2), a tropical wet and rather flat landscape covered by secondary Atlantic forest. As a consequence of the low altitude and proximity to the equator low neutron count rates could be expected, reducing the precision of CRNS while constituting unexplored and challenging conditions for CRNS applications. Inverse calibration for groundwater recharge rates was used based on CRNS or point-scale soil moisture data. The CRNS-derived retention curve and saturated hydraulic conductivity were consistent with the literature and locally performed slug tests. Simulated groundwater recharge rates ranged from 60 to 470 mm yr(-1), corresponding to 5 and 29\% of rainfall, and correlated well with estimates based on water table fluctuations. In contrast, the estimated results based on inversive point-scale datasets were not in alignment with measured water table fluctuations. The better performance of CRNS-based estimations of field-scale hydrological variables, especially groundwater recharge, demonstrated its clear advantages over traditional invasive point-scale techniques. Finally, the study proved the ability of CRNS as practicable in low altitude, tropical wet areas, thus encouraging its adoption for water resources monitoring and management.}, language = {en} } @article{RajewarMohanaLakshmiMohantyetal.2021, author = {Rajewar, S. K. and Mohana Lakshmi, Ch. and Mohanty, Aditya and Pandey, Dwijendra N. and Pandey, Anshuman and Chaurasia, Anurag and Pandey, Ananya and Rajeswar Rao, V. and Naidu, M. S. and Kumar, Amit and Mondal, Saroj K. and Yadav, Rajeev K. and Catherine, J. K. and Giri, R. K. and Gahalaut, Vineet Kumar}, title = {Constraining plate motion and crustal deformation from GNSS measurements}, series = {Journal of the Geological Society of India}, volume = {97}, journal = {Journal of the Geological Society of India}, number = {10}, publisher = {Springer India}, address = {New Delhi}, issn = {0974-6889}, doi = {10.1007/s12594-021-1850-8}, pages = {1207 -- 1213}, year = {2021}, abstract = {Geodetic studies of crustal deformation using Global Navigation Satellite System (GNSS, earlier commonly referred to as Global Positioning System, GPS) measurements at CSIR-NGRI started in 1995 with the installation of a permanent GNSS station at CSIR-NGRI Hyderabad which later became an International GNSS Service (IGS) site. The CSIR-NGRI started expanding its GNSS networks after 2003 with more focussed studies through installation in the NE India, Himalayan arc, Andaman subduction zone, stable and failed rift regions of India plate. In each instance, these measurements helped in unravelling the geodynamics of the region and seismic hazard assessment, e.g., the discovery of a plate boundary fault in the Indo-Burmese wedge, rate and mode of strain accumulation and its spatial variation in the Garhwal-Kumaun and Kashmir region of the Himalayan arc, the influence of non-tectonic deformation on tectonic deformation in the Himalayan arc, nature of crustal deformation through earthquake cycle in the Andaman Sumatra subduction zone, and localised deformation in the intraplate region and across the paleo rift regions. Besides these, GNSS measurements initiated in the Antarctica region have helped in understanding the plate motion and influence of seasonal variations on deformation. Another important by-product of the GNSS observations is the capabilities of these observations in understanding the ionospheric variations due to earthquake processes and also due to solar eclipse. We summarize these outcomes in this article.}, language = {en} } @article{KlugeSocolarSchoell2021, author = {Kluge, Lucas and Socolar, Joshua E. S. and Sch{\"o}ll, Eckehard}, title = {Random logic networks}, series = {Physical review : E, Statistical, nonlinear and soft matter physics}, volume = {104}, journal = {Physical review : E, Statistical, nonlinear and soft matter physics}, number = {6}, publisher = {American Physical Society}, address = {Woodbury, NY}, issn = {2470-0045}, doi = {10.1103/PhysRevE.104.064308}, pages = {10}, year = {2021}, abstract = {We investigate dynamical properties of a quantum generalization of classical reversible Boolean networks. The state of each node is encoded as a single qubit, and classical Boolean logic operations are supplemented by controlled bit-flip and Hadamard operations. We consider synchronous updating schemes in which each qubit is updated at each step based on stored values of the qubits from the previous step. We investigate the periodic or quasiperiodic behavior of quantum networks, and we analyze the propagation of single site perturbations through the quantum networks with input degree one. A nonclassical mechanism for perturbation propagation leads to substantially different evolution of the Hamming distance between the original and perturbed states.}, language = {en} } @article{LiSchlaichZhangetal.2021, author = {Li, Mingjun and Schlaich, Christoph and Zhang, Jianguang and Donskyi, Ievgen and Schwibbert, Karin and Schreiber, Frank and Xia, Yi and Radnik, J{\"o}rg and Schwerdtle, Tanja and Haag, Rainer}, title = {Mussel-inspired multifunctional coating for bacterial infection prevention and osteogenic induction}, series = {Journal of materials science \& technology : JMST ; an international journal / spons. by the Chinese Society for Metals (CSM), the Chinese Materials Research Society (CMRS), Institute of Metal Research, Chinese Academy of Sciences}, volume = {68}, journal = {Journal of materials science \& technology : JMST ; an international journal / spons. by the Chinese Society for Metals (CSM), the Chinese Materials Research Society (CMRS), Institute of Metal Research, Chinese Academy of Sciences}, publisher = {Elsevier}, address = {Amsterdam [u.a.]}, issn = {1005-0302}, doi = {10.1016/j.jmst.2020.08.011}, pages = {160 -- 171}, year = {2021}, abstract = {Bacterial infection and osteogenic integration are the two main problems that cause severe complications after surgeries. In this study, the antibacterial and osteogenic properties were simultaneously introduced in biomaterials, where copper nanoparticles (CuNPs) were generated by in situ reductions of Cu ions into a mussel-inspired hyperbranched polyglycerol (MI-hPG) coating via a simple dip-coating method. This hyperbranched polyglycerol with 10 \% catechol groups' modification presents excellent antifouling property, which could effectively reduce bacteria adhesion on the surface. In this work, polycaprolactone (PCL) electrospun fiber membrane was selected as the substrate, which is commonly used in biomedical implants in bone regeneration and cardiovascular stents because of its good biocompatibility and easy post-modification. The as-fabricated CuNPs-incorporated PCL membrane [PCL-(MI-hPG)-CuNPs] was confirmed with effective antibacterial performance via in vitro antibacterial tests against Staphylococcus aureus (S. aureus), Escherichia coli (E. coli), and multi-resistant E. coli. In addition, the in vitro results demonstrated that osteogenic property of PCL-(MI-hPG)-CuNPs was realized by upregulating the osteoblast-related gene expressions and protein activity. This study shows that antibacterial and osteogenic properties can be balanced in a surface coating by introducing CuNPs.}, language = {en} } @article{ChigarevKazakovPikovskij2021, author = {Chigarev, Vladimir and Kazakov, Alexey and Pikovskij, Arkadij}, title = {Mutual singularities of overlapping attractor and repeller}, series = {Chaos : an interdisciplinary journal of nonlinear science}, volume = {31}, journal = {Chaos : an interdisciplinary journal of nonlinear science}, number = {8}, publisher = {American Institute of Physics}, address = {Melville}, issn = {1054-1500}, doi = {10.1063/5.0056891}, pages = {10}, year = {2021}, abstract = {We apply the concepts of relative dimensions and mutual singularities to characterize the fractal properties of overlapping attractor and repeller in chaotic dynamical systems. We consider one analytically solvable example (a generalized baker's map); two other examples, the Anosov-Mobius and the Chirikov-Mobius maps, which possess fractal attractor and repeller on a two-dimensional torus, are explored numerically. We demonstrate that although for these maps the stable and unstable directions are not orthogonal to each other, the relative Renyi and Kullback-Leibler dimensions as well as the mutual singularity spectra for the attractor and repeller can be well approximated under orthogonality assumption of two fractals.}, language = {en} } @article{MildeLangenhorstHoelscheretal.2021, author = {Milde, Peter and Langenhorst, Malte and H{\"o}lscher, Hendrik and Rottmann-Matthes, Jens and Hundertmark, Dirk and Eng, Lukas and Hoffmann-Vogel, Regina}, title = {Out-of-equilibrium optomechanical resonance self-excitation}, series = {Journal of applied physics}, volume = {130}, journal = {Journal of applied physics}, number = {3}, publisher = {American Institute of Physics}, address = {Melville}, issn = {0021-8979}, doi = {10.1063/5.0054509}, pages = {10}, year = {2021}, abstract = {The fundamental sensitivity limit of atomic force microscopy is strongly correlated to the thermal noise of cantilever oscillation. A method to suppress this unwanted noise is to reduce the bandwidth of the measurement, but this approach is limited by the speed of the measurement and the width of the cantilever resonance, commonly defined through the quality factor Q. However, it has been shown that optomechanical resonances in interferometers might affect cantilever oscillations resulting in an effective quality factor Q(eff). When the laser power is sufficiently increased cantilever oscillations might even reach the regime of self-oscillation. In this self-oscillation state, the noise of the system is partially determined by the interaction with laser light far from equilibrium. Here, we show and discuss how tuning of laser power leads to nonlinear optomechanical effects that can dramatically increase the effective quality factor of the cantilever leading to out-of-equilibrium noise. We model the effects using a fourth order nonlinearity of the damping coefficient. Published under an exclusive license by AIP Publishing.}, language = {en} } @article{EstivalChevalereLaurieretal.2021, author = {Estival, S{\´e}verine and Cheval{\`e}re, Johann and Laurier, Virginie and Mourre, Fabien and Tricot, Julie and Postal, Virginie}, title = {Study of the deficit in planning abilities of adults with Prader-Willi Syndrome}, series = {Research in developmental disabilities}, volume = {117}, journal = {Research in developmental disabilities}, publisher = {Elsevier}, address = {Amsterdam [u.a.]}, issn = {0891-4222}, doi = {10.1016/j.ridd.2021.104056}, pages = {10}, year = {2021}, abstract = {Background: Prader-Willi syndrome (PWS) is a complex developmental genetic disorder associated with intellectual disability and deficits in executive functions which result in disorganisation and poor personal autonomy. Aims: This study aimed to determine impairments in planning skills of adults with PWS, in relation with their intellectual disabilities, as well as the influence of food compulsions on their performance. Methods and procedures: A modified version of the Zoo Map from the Behavioural Assessment of the Dysexecutive Syndrome was used in three groups: a group of adults with PWS in comparison with two groups both matched on chronological age, one with typical development (TD) and one with intellectual disability (ID). Outcomes and results: Compared to TD adults, both adults with PWS and ID showed increased planning time and lower raw scores on the planning task. The execution time and the number of errors were higher in the PWS group compared to the comparison groups. All three groups performed worse in the non-food condition only for number of errors and raw score. Conclusions and implications: Planning abilities were impaired in PWS adults. Results also showed that intellectual level plays a role in participants' performance. These findings are essential to understand the difficulties of people with PWS daily life.}, language = {en} } @article{LopezSanchezBarethBoltenetal.2021, author = {L{\´o}pez-S{\´a}nchez, Aida and Bareth, Georg and Bolten, Andreas and Rose, Laura E. and Mansfeldt, Tim and Sapp, Melanie and Linst{\"a}dter, Anja}, title = {Effects of declining oak vitality on ecosystem multifunctionality}, series = {Forest ecology and management}, volume = {484}, journal = {Forest ecology and management}, publisher = {Elsevier}, address = {Amsterdam}, issn = {0378-1127}, doi = {10.1016/j.foreco.2021.118927}, pages = {12}, year = {2021}, abstract = {Mediterranean oak woodlands are currently facing unprecedented degradation threats from oak decline. The Iberian oak decline "Seca", related to Phytophthora infection, causes crown defoliation that may adversely affect ecosystem services (ESs). We aim to improve our understanding of how Seca-induced declines in crown foliation affect the provision of multiple ecosystem services from understory vegetation. We selected holm (Quercus ilex) and cork oak (Q. suber) trees in a Spanish oak woodland and evaluated three proxies of canopy effects. One proxy (crown defoliation) solely captured Seca-dependent effects, one proxy solely captured Seca-independent effects (tree dimensions such as diameter and height), while the third proxy (tree vigor) captured overall canopy effects. We then used the best-performing proxies to assess canopy effects on key ecosystem services (ESs) such as aboveground net primary production (ANPP), grass and legume biomass, species diversity, litter decomposition rates, and a combined index of ecosystem multifunctionality.
We found that both types of canopy effects (i.e. Seca-dependent and Seca-independent effects) were related, indicating that ANPP was disproportionally more affected by Seca when defoliated trees were large. Responses of other ESs were mostly not significant, although lower species diversity was found under trees with intermediate vigor. Our results underline that a Seca-related decline in canopy density triggered a homogenization of ecosystem service delivery on the ecosystem scale. The ecosystem functions (EFs) under trees of low vigor are similar to that in adjacent open microsites indicating that the presence of vigorous (i.e. old and vital) trees is critical for maintaining EFs at a landscape level. Our results also highlight the importance of quantifying not only defoliation but also tree dimensions as both factors jointly and interactively modify canopy effects on ecosystem multifunctionality.}, language = {en} } @article{NguyenGeorgieKayhanetal.2021, author = {Nguyen, Dong Hai Phuong and Georgie, Yasmin Kim and Kayhan, Ezgi and Eppe, Manfred and Hafner, Verena Vanessa and Wermter, Stefan}, title = {Sensorimotor representation learning for an "active self" in robots}, series = {K{\"u}nstliche Intelligenz : KI ; Forschung, Entwicklung, Erfahrungen ; Organ des Fachbereichs 1 K{\"u}nstliche Intelligenz der Gesellschaft f{\"u}r Informatik e.V., GI / Fachbereich 1 der Gesellschaft f{\"u}r Informatik e.V}, volume = {35}, journal = {K{\"u}nstliche Intelligenz : KI ; Forschung, Entwicklung, Erfahrungen ; Organ des Fachbereichs 1 K{\"u}nstliche Intelligenz der Gesellschaft f{\"u}r Informatik e.V., GI / Fachbereich 1 der Gesellschaft f{\"u}r Informatik e.V}, number = {1}, publisher = {Springer}, address = {Berlin}, issn = {0933-1875}, doi = {10.1007/s13218-021-00703-z}, pages = {9 -- 35}, year = {2021}, abstract = {Safe human-robot interactions require robots to be able to learn how to behave appropriately in spaces populated by people and thus to cope with the challenges posed by our dynamic and unstructured environment, rather than being provided a rigid set of rules for operations. In humans, these capabilities are thought to be related to our ability to perceive our body in space, sensing the location of our limbs during movement, being aware of other objects and agents, and controlling our body parts to interact with them intentionally. Toward the next generation of robots with bio-inspired capacities, in this paper, we first review the developmental processes of underlying mechanisms of these abilities: The sensory representations of body schema, peripersonal space, and the active self in humans. Second, we provide a survey of robotics models of these sensory representations and robotics models of the self; and we compare these models with the human counterparts. Finally, we analyze what is missing from these robotics models and propose a theoretical computational framework, which aims to allow the emergence of the sense of self in artificial agents by developing sensory representations through self-exploration.}, language = {en} } @article{LazaridesDickeRubachetal.2021, author = {Lazarides, Rebecca and Dicke, Anna-Lena and Rubach, Charlott and Oppermann, Elisa and Eccles, Jacquelynne S.}, title = {Motivational profiles across domains and academic choices within Eccles et al.'s situated expectancy}, series = {Developmental psychology}, volume = {57}, journal = {Developmental psychology}, number = {11}, publisher = {American Psychological Association}, address = {Washington}, issn = {0012-1649}, doi = {10.1037/dev0001250}, pages = {1893 -- 1909}, year = {2021}, abstract = {This longitudinal person-centered study aimed to identify profiles of subjective task values and ability self-concepts of adolescents in the domain of mathematics, English, biology, and physics in Grades 10 and 12. We were interested in gendered changes of profile membership, and in relations between profile membership and educational and occupational outcomes in adulthood. Data were drawn from the Michigan Study of Adolescent and Adult Life Transitions. We focused on students who participated in the data collection in Grades 10 and 12 (N = 911; 56.1\% female; M-age = 16.49, SD = .63; 91.2\% European American, 4.6\% African American, and 2.1\% other ethnic groups such as Hispanic, Asian, Native American). Data on subsequent college majors were assessed 2, 6, and 10 years after finishing high school and data on occupational outcomes was assessed up to 22 years after high school. Using Latent Profile Analyses, our findings revealed five profiles in grade 10 and four profiles in grade 12, which were meaningfully related to student gender. Latent Transition Analyses showed that motivational beliefs became more hierarchical over time. Gendered changes in profile membership occurred, with boys experiencing a process of specialization into mathematics domains. We were also able to show that gender-specific intraindividual hierarchies of motivational beliefs were related to gender-specific specialization processes in adolescence and to subsequent gendered choices throughout the life course.}, language = {en} } @article{KutzschbachWunderWannhoffetal.2021, author = {Kutzschbach, Martin and Wunder, Bernd and Wannhoff, Iris and Wilke, Franziska Daniela Helena and Couffignal, Fr{\´e}d{\´e}ric and Rocholl, Alexander}, title = {Raman spectroscopic quantification of tetrahedral boron in synthetic aluminum-rich tourmaline}, series = {American mineralogist : an international journal of earth and planetary materials}, volume = {106}, journal = {American mineralogist : an international journal of earth and planetary materials}, number = {6}, publisher = {Mineralogical Society of America}, address = {Washington, DC [u.a.]}, issn = {0003-004X}, doi = {10.2138/am-2021-7758}, pages = {872 -- 882}, year = {2021}, abstract = {The Raman spectra of five B-[4]-bearing tourmalines of different composition synthesized at 700 degrees C/4.0 GPa (including first-time synthesis of Na-Li-B-[4]-tourmaline, Ca-Li-B-[4]-tourmaline, and Ca-bearing square-B-[4]-tourmaline) reveal a strong correlation between the tetrahedral boron content and the summed relative intensity of all OH-stretching bands between 3300-3430 cm(-1). The band shift to low wavenumbers is explained by strong O3-H center dot center dot center dot O5 hydrogen bridge bonding. Applying the regression equation to natural B-[4]-bearing tourmaline from the Koralpe (Austria) reproduces the EMPA-derived value perfectly [EMPA: 0.67(12) B-[4] pfu vs. Raman: 0.66(13) B-[4] pfu]. This demonstrates that Raman spectroscopy provides a fast and easy-to-use tool for the quantification of tetrahedral boron in tourmaline. The knowledge of the amount of tetrahedral boron in tourmaline has important implications for the better understanding and modeling of B-isotope fractionation between tourmaline and fluid/melt, widely used as a tracer of mass transfer processes.}, language = {en} } @inproceedings{WangBreternitzSchorr2021, author = {Wang, Zhenyu and Breternitz, Joachim and Schorr, Susan}, title = {Cation disorder in zinc-group IV- nitride and oxide nitride semiconductor materials revealed through neutron diffraction}, series = {Acta crystallographica / International Union of Crystallography. Section A, Foundations and advances}, volume = {77}, booktitle = {Acta crystallographica / International Union of Crystallography. Section A, Foundations and advances}, number = {Suppl.}, publisher = {Blackwell}, address = {Oxford [u.a.]}, issn = {2053-2733}, doi = {10.1107/S0108767321086256}, pages = {C1077 -- C1077}, year = {2021}, language = {en} } @article{WilhelmiNeumannJaehnertetal.2021, author = {Wilhelmi, Ilka and Neumann, Alexander and J{\"a}hnert, Markus and Ouni, Meriem and Sch{\"u}rmann, Annette}, title = {Enriched alternative splicing in islets of diabetes-susceptible mice}, series = {International journal of molecular sciences}, volume = {22}, journal = {International journal of molecular sciences}, number = {16}, publisher = {Molecular Diversity Preservation International}, address = {Basel}, issn = {1422-0067}, doi = {10.3390/ijms22168597}, pages = {16}, year = {2021}, abstract = {Dysfunctional islets of Langerhans are a hallmark of type 2 diabetes (T2D). We hypothesize that differences in islet gene expression alternative splicing which can contribute to altered protein function also participate in islet dysfunction. RNA sequencing (RNAseq) data from islets of obese diabetes-resistant and diabetes-susceptible mice were analyzed for alternative splicing and its putative genetic and epigenetic modulators. We focused on the expression levels of chromatin modifiers and SNPs in regulatory sequences. We identified alternative splicing events in islets of diabetes-susceptible mice amongst others in genes linked to insulin secretion, endocytosis or ubiquitin-mediated proteolysis pathways. The expression pattern of 54 histones and chromatin modifiers, which may modulate splicing, were markedly downregulated in islets of diabetic animals. Furthermore, diabetes-susceptible mice carry SNPs in RNA-binding protein motifs and in splice sites potentially responsible for alternative splicing events. They also exhibit a larger exon skipping rate, e.g., in the diabetes gene Abcc8, which might affect protein function. Expression of the neuronal splicing factor Srrm4 which mediates inclusion of microexons in mRNA transcripts was markedly lower in islets of diabetes-prone compared to diabetes-resistant mice, correlating with a preferential skipping of SRRM4 target exons. The repression of Srrm4 expression is presumably mediated via a higher expression of miR-326-3p and miR-3547-3p in islets of diabetic mice. Thus, our study suggests that an altered splicing pattern in islets of diabetes-susceptible mice may contribute to an elevated T2D risk.}, language = {en} } @article{FarkasHofmannZimmermannetal.2021, author = {Farkas, M{\´a}rton P{\´a}l and Hofmann, Hannes and Zimmermann, G{\"u}nter and Zang, Arno and Bethmann, Falko and Meier, Peter and Cottrell, Mark and Josephson, Neal}, title = {Hydromechanical analysis of the second hydraulic stimulation in well PX-1 at the Pohang fractured geothermal reservoir, South Korea}, series = {Geothermics : an international journal of geothermal research and its applications}, volume = {89}, journal = {Geothermics : an international journal of geothermal research and its applications}, publisher = {Elsevier}, address = {Amsterdam [u.a.]}, issn = {0375-6505}, doi = {10.1016/j.geothermics.2020.101990}, pages = {13}, year = {2021}, abstract = {In this study, we investigate numerically the hydro-mechanical behavior of fractured crystalline rock due to one of the five hydraulic stimulations at the Pohang Enhanced Geothermal site in South Korea. We use the commercial code FracMan (Golder Associates) that enables studying hydro-mechanical coupled processes in fractured media in three dimensions combining the finite element method with a discrete fracture network. The software is used to simulate fluid pressure perturbation at fractures during hydraulic stimulation. Our numerical simulation shows that pressure history matching can be obtained by partitioning the treatment into separate phases. This results in adjusted stress-aperture relationships. The evolution of aperture adjustment implies that the stimulation mechanism could be a combination of hydraulic fracturing and shearing. The simulated extent of the 0.01 MPa overpressure contour at the end of the treatment equals to similar to 180 m around the injection point.}, language = {en} } @article{SedaghatmehrThirumalaikumarKamranfaretal.2021, author = {Sedaghatmehr, Mastoureh and Thirumalaikumar, Venkatesh P. and Kamranfar, Iman and Schulz, Karina and M{\"u}ller-R{\"o}ber, Bernd and Sampathkumar, Arun and Balazadeh, Salma}, title = {Autophagy complements metalloprotease FtsH6 in degrading plastid heat shock protein HSP21 during heat stress recovery}, series = {The journal of experimental botany : an official publication of the Society for Experimental Biology and of the Federation of European Societies of Plant Physiology}, volume = {72}, journal = {The journal of experimental botany : an official publication of the Society for Experimental Biology and of the Federation of European Societies of Plant Physiology}, number = {21}, publisher = {Oxford University Press}, address = {Oxford}, issn = {0022-0957}, doi = {10.1093/jxb/erab304}, pages = {7498 -- 7513}, year = {2021}, abstract = {Moderate and temporary heat stresses prime plants to tolerate, and survive, a subsequent severe heat stress. Such acquired thermotolerance can be maintained for several days under normal growth conditions, and can create a heat stress memory. We recently demonstrated that plastid-localized small heat shock protein 21 ( HSP21) is a key component of heat stress memory in Arabidopsis thaliana. A sustained high abundance of HSP21 during the heat stress recovery phase extends heat stress memory. The level of HSP21 is negatively controlled by plastid-localized metalloprotease FtsH6 during heat stress recovery. Here, we demonstrate that autophagy, a cellular recycling mechanism, exerts additional control over HSP21 degradation. Genetic and chemical disruption of both metalloprotease activity and autophagy trigger superior HSP21 accumulation, thereby improving memory. Furthermore, we provide evidence that autophagy cargo receptor ATG8-INTERACTING PROTEIN1 (ATI1) is associated with heat stress memory. ATI1 bodies co-localize with both autophagosomes and HSP21, and their abundance and transport to the vacuole increase during heat stress recovery. Together, our results provide new insights into the module for control of the regulation of heat stress memory, in which two distinct protein degradation pathways act in concert to degrade HSP21, thereby enabling cells to recover from the heat stress effect at the cost of reducing the heat stress memory.}, language = {en} } @incollection{BindenagelŠehović2021, author = {Bindenagel Šehović, Annamarie}, title = {Protecting the vulnerable}, series = {Preventing HIV among young people in Southern and Eastern Africa : Emerging evidence and intervention strategies. - (Routledge Studies in health in Africa ; Vol. 2)}, booktitle = {Preventing HIV among young people in Southern and Eastern Africa : Emerging evidence and intervention strategies. - (Routledge Studies in health in Africa ; Vol. 2)}, editor = {Govender, Kaymarlin and Poku, Nana K.}, publisher = {Routledge/Taylor \& Francis Group}, address = {London ; New York}, isbn = {978-0-429-46281-8}, doi = {10.4324/9780429462818}, pages = {110 -- 124}, year = {2021}, abstract = {Contemporary pressures of climate change and migration are abetting the spread of (re)emerging infectious diseases (EIDs), including HIV, Ebola and tuberculosis (TB). While the fact remains that any person can become infected, those most affected are vulnerable populations. In Eastern and Southern Africa (ESA) these include marginalized groups such as people who sell sex, LGBTI and MSM, but more widely also adolescents. Adolescents and young adults represent a particularly vulnerable group, caught as they are on the cusp between child protections and adult citizenship claims, including to health and educational provisions and protections. Without, or with incomplete claims, members of marginalized and vulnerable communities are excluded from access to provisions and protections of health as part of human security, whether out of apathy, fear or jurisdiction or through (deliberate) neglect. The chapter proceeds through the framework of human security, which puts the security of individuals at the centre of its analysis. This stands in contrast to the 1990s securitization argument which framed HIV as a threat to state security. This chapter analyzes unique challenges of vulnerable adolescent populations as these relate to HIV prevention and treatment access. In doing so, it pays special heed to the "double vulnerability" of non-citizenship and compromised citizenship among this cohort. By invoking the human security paradigm, this chapter explores HIV interventions as they pertain to and aim to protect vulnerable populations beyond borders.}, language = {en} }