Refine
Year of publication
Document Type
- Article (29)
- Postprint (11)
- Monograph/Edited Volume (8)
- Part of Periodical (5)
- Conference Proceeding (1)
- Doctoral Thesis (1)
- Other (1)
Keywords
- Brandenburg (3)
- Digitalisierung (3)
- Governance (3)
- digitalization (3)
- governance (3)
- local governance (3)
- Lehrerbildung (2)
- PLFA (2)
- agroecosystem (2)
- algae (2)
- assessment (2)
- bacteria (2)
- legume-grass mixture (2)
- light (2)
- lokale Governance (2)
- microbial interactions (2)
- mixed cropping (2)
- perennial crop (2)
- streambed structure (2)
- terrestrial carbon (2)
- wildflower mixture (2)
- (CS)-C-137 and Pb-210 dating (1)
- 13C stable isotopes (1)
- ALOS/PALSAR (1)
- Abgaben (1)
- Abgabenbescheide (1)
- Aimé Bonpland (1)
- Alcohol dependence (1)
- Alcohol expectancy (1)
- Antarctic (1)
- Antarctic Specially Managed Area (1)
- Aptian (1)
- Arbeitsmärkte (1)
- Arbeitspolitik (1)
- Argon-Argon dating (1)
- Aridity (1)
- August Schmidt (1)
- Auswanderung (1)
- Avé-Lallemant (1)
- BIOMEX (1)
- Balance (1)
- Beiträge (1)
- Berlin (1)
- C-13 stable isotopes (1)
- C-14-derived chronology (1)
- Calcaneus (1)
- Carbon (1)
- Carbon and oxygen isotopes (1)
- Carbonate platform response (1)
- Carl Friedrich Gauß (1)
- Chimära (1)
- Clostridioides difficile (1)
- DNRA (1)
- Daseinsvorsorge (1)
- Denitrifiers (1)
- Desiccation (1)
- Diamanten-Identifikation (1)
- Discontinuity surfaces (1)
- EXPOSE-R2 (1)
- Eifel maar (1)
- Einfluss der Temperatur auf die magnetischen Eigenschaften (1)
- Einwanderung (1)
- Entrepreneurship (1)
- Entwicklung (1)
- Erdmagnetismus (1)
- Erforschung des Erdmagnetismus (1)
- Erhebungsinstrumente (1)
- Erzählweise (1)
- Evaluation (1)
- Extremophiles (1)
- Fildes Region (1)
- GIS (1)
- GP2 isoform alpha (1)
- Gait (1)
- Gebühren (1)
- Genomes (1)
- Gespräch mit Humboldt (1)
- Goal-directed control (1)
- Habitability (1)
- Handlungsempfehlungen (1)
- Helgoland (1)
- HiGHmed (1)
- Historical events (1)
- Humboldtian Writing (1)
- Innovative Lehrkonzepte (1)
- Institut (1)
- Intra-articular calcaneal fracture (1)
- Irene Prüfer Leske (1)
- KAG (1)
- Kommunalwissenschaft (1)
- Komplexität (1)
- Konzepte (1)
- Kosmos (1)
- Laminated lake sediments (1)
- Laponite (1)
- Limits of life (1)
- Lokale Governance (1)
- Luminescence dating (1)
- Lykien (1)
- Magnetisierung (1)
- Magnetisierung von Nadeln und Stäben (1)
- Magnetometer (1)
- Market economy (1)
- Marktwirtschaft (1)
- Mars (1)
- Mecklenburg-Schwerin (1)
- Medial prefrontal cortex (1)
- Migrationsgeschichte (1)
- Mineralogie (1)
- Muscle strength (1)
- Mäzenatentum in der Kunst (1)
- Naturwissenschaft (1)
- Netzwerk (1)
- Nitrogen (1)
- Oceanic anoxic event 1a (1)
- Organic matter mineralization (1)
- Ostasienexpedition (1)
- Palaeomagnetism (1)
- Palynostratigraphy (1)
- Partizipation (1)
- Peak torque (1)
- Philatelie (1)
- Plantar pressure distribution (1)
- Postural control (1)
- Potsdam (1)
- Praxisphasen (1)
- Proprioception (1)
- Proto-North Atlantic (1)
- Regionale Governance (1)
- Regionalentwicklung (1)
- Rehabilitation (1)
- Reinforcement learning (1)
- Reisebilder Italien (1)
- Reiserouten auf Humboldts Spuren (1)
- Rhodos (1)
- Rohstoffverarbeitung (1)
- Sediment (1)
- Stephen Bell (1)
- Steuern (1)
- Technologie (1)
- Tephrostratigraphy (1)
- Testinstrumente (1)
- Theorie des Erdmagnetismus (1)
- Treatment outcome (1)
- Tuning (1)
- Ulrich Jasper Seetzen (1)
- Universität (1)
- Varve counting (1)
- Verlust von Kunstwerken aus deutschen Museen (1)
- Vernetzung (1)
- Vernetzungen (1)
- Wastewater (1)
- Zivilgesellschaft (1)
- acute pancreatitis (1)
- adeliges Pflanzendarstellungen in Südamerika (1)
- bio-inspired (1)
- biodiversity (1)
- cancer therapy (1)
- chronic pancreatitis (1)
- civil society (1)
- coexistence (1)
- concepts (1)
- data integration (1)
- deep seated landslide (1)
- development (1)
- drylands (1)
- dynamics (1)
- entrepreneurship (1)
- environmental management (1)
- evaluation (1)
- extent of rhizosphere (1)
- field (1)
- forested headwater catchment (1)
- gas permeation (1)
- human impact (1)
- interferometric SAR (InSAR) (1)
- künstliche Magnete (1)
- labour markets (1)
- labour politics (1)
- land use (1)
- liquid crystal (1)
- liquid crystal polymer (1)
- ländliche Entwicklung (1)
- ländliche Governance (1)
- ländliche Räume (1)
- magnetischer Verein (1)
- magnetisches Observatorium (1)
- mesic grasslands (1)
- modelling (1)
- moisture observing system (1)
- molecular tumor board (1)
- networking (1)
- networks (1)
- neutron tomography (1)
- observatories (1)
- organic-inorganic composite material (1)
- pancreatic neoplasms (1)
- parameterization methods (1)
- participation (1)
- personalized medicine (1)
- policy recommendations (1)
- preußische Universitäten Berlin und Bonn (1)
- protected area (1)
- public services (1)
- regional development (1)
- regional governance (1)
- rhizosphere hydraulic properties (1)
- rock-paper-scissors game (1)
- root water uptake (1)
- rural areas (1)
- rural development (1)
- rural governance (1)
- scale (1)
- self-organization (1)
- severe acute pancreatitis (1)
- small baseline subset (SBAS) (1)
- soil moisture profile (1)
- soil-water content (1)
- stars: magnetic field (1)
- subdwarfs (1)
- teacher education (1)
- test instruments (1)
- time-series (1)
- very slow moving landslide (1)
- water distribution (1)
- wissenschaftliche Korrespondenz (1)
- zymogen granule membrane glycoprotein GP2 (1)
- Ökonomie (1)
Institute
- Institut für Biochemie und Biologie (9)
- Institut für Geowissenschaften (7)
- Department Psychologie (5)
- Kommunalwissenschaftliches Institut (5)
- Extern (4)
- Institut für Chemie (4)
- Department Sport- und Gesundheitswissenschaften (3)
- Mathematisch-Naturwissenschaftliche Fakultät (3)
- Zentrum für Lehrerbildung und Bildungsforschung (ZeLB) (3)
- Hasso-Plattner-Institut für Digital Engineering gGmbH (2)
Aus dem Inhalt: Die Juvenilhormone 1a-c werden im Blut von Insekten enzymatisch zu den biologisch inaktiven Sluren hydrolysiert. Bei der Hydrolyse von racemischem 1c im Blut der Wanderheuschrecke Locusta migratoria wird ein Umsatz von 40-60% erreicht. Das unumgesetzte Edukt enthällt einen Überschuß an natürlich konfiguriertem (10R)-1c (e.e. 47.2%). Wir konnten zeigen, daß das in der Hämolymphe vorhandene Hormon-Bindungsprotein bevorzugt mit (10R)- 1c assoziiert.
Moving in the Anthropocene
(2018)
Animal movement is fundamental for ecosystem functioning and species survival, yet the effects of the anthropogenic footprint on animal movements have not been estimated across species. Using a unique GPS-tracking database of 803 individuals across 57 species, we found that movements of mammals in areas with a comparatively high human footprint were on average one-half to one-third the extent of their movements in areas with a low human footprint. We attribute this reduction to behavioral changes of individual animals and to the exclusion of species with long-range movements from areas with higher human impact. Global loss of vagility alters a key ecological trait of animals that affects not only population persistence but also ecosystem processes such as predator-prey interactions, nutrient cycling, and disease transmission.
This review analyzes the potential role and long-term effects of field perennial polycultures (mixtures) in agricultural systems, with the aim of reducing the trade-offs between provisioning and regulating ecosystem services. First, crop rotations are identified as a suitable tool for the assessment of the long-term effects of perennial polycultures on ecosystem services, which are not visible at the single-crop level. Second, the ability of perennial polycultures to support ecosystem services when used in crop rotations is quantified through eight agricultural ecosystem services. Legume-grass mixtures and wildflower mixtures are used as examples of perennial polycultures, and compared with silage maize as a typical crop for biomass production. Perennial polycultures enhance soil fertility, soil protection, climate regulation, pollination, pest and weed control, and landscape aesthetics compared with maize. They also score lower for biomass production compared with maize, which confirms the trade-off between provisioning and regulating ecosystem services. However, the additional positive factors provided by perennial polycultures, such as reduced costs for mineral fertilizer, pesticides, and soil tillage, and a significant preceding crop effect that increases the yields of subsequent crops, should be taken into account. However, a full assessment of agricultural ecosystem services requires a more holistic analysis that is beyond the capabilities of current frameworks.
Indicators to assess sustainable land development often focus on either economic or ecologic aspects of landscape use. The concept of multifunctional land use helps merging those two focuses by emphasising on the rule that economic action is per se accompanied by ecological utility: commodity outputs (CO, e.g., yields) are paid for on the market, but non-commodity outputs (NCO, e.g., landscape aesthetics) so far are public goods with no markets. Agricultural production schemes often provided both outputs by joint production, but with technical progress under prevailing economic pressure, joint production increasingly vanishes by decoupling of commodity from non-commodity production. Simultaneously, by public and political awareness of these shortcomings, there appears a societal need or even demand for some non-commodity outputs of land use, which induces a market potential, and thus, shift towards the status of a commodity outputs. An approach is presented to merge both types of output by defining an indicator of social utility (SUMLU): production schemes are considered with respect to social utility of both commodity and non-commodity outputs. Social utility in this sense includes environmental and economic services as long as society expresses a demand for them. For each combination of parameters at specific frame conditions (e.g., soil and climate properties of a landscape) a production possibility curve can reflect trade-offs between commodity and non-commodity outputs. On each production possibility curve a welfare optimum can be identified expressing the highest achievable value of social utility as a trade-off between CO and NCO production. When applying more parameters, a cluster of welfare optimums is generated. Those clusters can be used for assessing production schemes with respect to sustainable land development. Examples of production possibility functions are given on easy applicable parameters (nitrogen leaching versus gross margin) and on more complex ones (biotic integrity). Social utility, thus allows to evaluate sustainability of land development in a cross-sectoral approach with respect to multifunctionality. (C) 2005 Elsevier Ltd. All rights reserved
Under continuous pressure from globalised competition, labour markets no longer guarantee the social inclusion of all citizens into civil society. For a „civilised“ market economy, it is essential to frame further economic „rationalisation“ by a comprehensive labour policy that values meaningful ways of human activity as well as the just organisation of the world of work over efficient labour markets. Without such a comprehensive labour policy, argues, labour markets increasingly become „tyrannical“ and will endanger the foundations of a modern society of free and equal citizens.
This review analyzes the potential role and long-term effects of field perennial polycultures (mixtures) in agricultural systems, with the aim of reducing the trade-offs between provisioning and regulating ecosystem services. First, crop rotations are identified as a suitable tool for the assessment of the long-term effects of perennial polycultures on ecosystem services, which are not visible at the single-crop level. Second, the ability of perennial polycultures to support ecosystem services when used in crop rotations is quantified through eight agricultural ecosystem services. Legume-grass mixtures and wildflower mixtures are used as examples of perennial polycultures, and compared with silage maize as a typical crop for biomass production. Perennial polycultures enhance soil fertility, soil protection, climate regulation, pollination, pest and weed control, and landscape aesthetics compared with maize. They also score lower for biomass production compared with maize, which confirms the trade-off between provisioning and regulating ecosystem services. However, the additional positive factors provided by perennial polycultures, such as reduced costs for mineral fertilizer, pesticides, and soil tillage, and a significant preceding crop effect that increases the yields of subsequent crops, should be taken into account. However, a full assessment of agricultural ecosystem services requires a more holistic analysis that is beyond the capabilities of current frameworks.
After surgical treatment of cancer of the esophagus or the esophagogastric junction we observed steatorrhea, which is so far seldom reported. We analyzed all patients treated in our rehabilitation clinic between 2011 and 2014 and focused on the impact of surgery on digestion of fat. Reported steatorrhea was anamnestic, no pancreatic function test was made. Here we show the results from 51 patients. Twenty-three (45%) of the patients reported steatorrhea. Assuming decreased pancreatic function pancreatic enzyme replacement therapy (PERT) was started or modified during the rehabilitation stay (in the following called STEA(+)). These patients were compared with the patients without steatorrhea and without PERT (STEA(-)). Maximum weight loss between surgery and rehabilitation start was 18 kg in STEA(+) patient and 15.3 kg in STEA(-) patients. STEA(+) patients gained more weight under PERT during the rehabilitation phase (3 wk) than STEA(-) patients without PERT (+1.0 kg vs. -0.3 kg, P = 0.032). We report for the first time, that patients after cancer related esophageal surgery show anamnestic signs of exocrine pancreas insufficiency and need PERT to gain body weight.
Das Kommunalabgabengesetz für das Land Brandenburg (KAG) ist eine für alle Kommunalverwaltungen, Zweckverbände und Anwälte wichtige Rechtsmaterie. Den 20 Paragrafen steht eine Fülle von Fragen nach Auslegung und Anwendung des Gesetzes gegenüber, die von der Rechtsprechung mit zahlreichen Entscheidungen beantwortet werden.
Mit dem Werk "Kommunalabgabengesetz für das Land Brandenburg" liegt ein umfassender Kommentar vor, der sich mit der Auslegung des brandenburgischen Kommunalabgabengesetzes (KAG) und der dazu ergangenen Rechtsprechung befasst. Die zahlreichsten Gerichtsentscheidungen beinhaltet die Kommentierung zu § 6 (Benutzungsgebühren) Einerseits darf der Titel für sich in Anspruch nehmen, auch nicht speziell juristisch ausgebildete Nutzer in die Rechtsvorschriften zum KAG Brandenburg einzuführen. Andererseits will es aber auch den mit dem Abgabenrecht befassten Fachleuten in Verwaltungen, Verbänden, Gerichten und Kanzleien eine solide Grundlage für möglichst rechtssichere Entscheidungen bieten.
Der engen räumlichen Nähe wegen beinhaltet das Werk die Abgabenrechtlichen Vorschriften des Landes Berlin.
Bio-inspired Laponite (clay)-liquid crystal (LC) polymer composite materials with high clay fractions (>80%) and a high level of orientation of the clay platelets, i.e. with structural features similar to the ones found in natural nacre, have been shown to exhibit a promising behavior in the context of reduced oxygen transmission. Key characteristics of these bio-inspired composite materials are their high inorganic content, high level of exfoliation and orientation of the clay platelets, and the use of a LC polymer forming the organic matrix in between the Laponite particles. Each single feature may be beneficial to increase the materials gas barrier property rendering this composite a promising system with advantageous barrier capacities. In this detailed study, Laponite/LC polymer composite coatings with different clay loadings were investigated regarding their oxygen transmission rate. The obtained gas barrier performance was linked to the quality, respective Laponite content and the underlying composite micro-and nanostructure of the coatings. Most efficient oxygen barrier properties were observed for composite coatings with 83% Laponite loading that exhibit a structure similar to sheet-like nacre. Further on, advantageous mechanical properties of these Laponite/LC polymer composites reported previously give rise to a multifunctional composite system.
Serological diagnosis and prognosis of severe acute pancreatitis by analysis of serum glycoprotein 2
(2017)
To better understand emerging adults’ perceptions of family interactions and value transmission to the next generation, we examined Hmong American emerging adults’ reflections on their parents’ parenting. Participants discussed what parenting practices they would do differently and others they hoped to emulate with their future adolescent children. Thirty Hmong American emerging adults (18-25 years; M = 21.2 years; 50% female) participated in interviews that focused retrospectively on the parent–adolescent relationship. Results revealed that emerging adults wanted to parent differently in three ways: less pressure about education, fewer restrictions, and more open communication. Emerging adults imagined being a similar
parent in four ways: promoting education, promoting life values, giving
guidance, and offering love and support. The findings highlight parenting practices that Hmong American emerging adults plan on transmitting (and not transmitting) to their own children, offering a glimpse into the type of parents the emerging adults may become.
Awards
(2013)
Integrated biostratigraphic-chemostratigraphic studies provide evidence that the proto-North Atlantic realm witnessed major changes in carbonate platform production in the run-up of the Early Aptian oceanic anoxic event (OAE) 1a. Whereas pervasive growth of Lithocodium microencrusters represents an early harbinger of OAE1a-related environmental perturbation, the subsequent replacement of oligotrophic rudist-coral-nerineid by mesotrophic orbitolinid-oyster communities was clearly associated with the event itself. In order to test the supra-regional relevance of this major community replacement, two shallow-water sections in the southern Lusitanian Basin (Portugal) are investigated by means of geochemistry (carbon and oxygen isotopes), cement petrography and detailed sedimentological analysis. The focus is on a regional, prominent discontinuity surface (S4) at the transition between oligotrophic and mesotrophic carbonate platform production, which might indicate that the major biotic change could have been associated with a phase of non-sedimentation and possibly erosion. The studied sections (Sao Julia, Crismina) provide evidence that the major Early Aptian biotic turnover was preceded by numerous subordinate but significant changes in platform ecology, which mirrored a series of progressive short-term environmental changes in the course of OAE1. Several transient mass occurrences of orbitolinids indicate repeated phases of ecological stress arguably due to enhanced nutrient input and deepening. Small-scale sea-level changes at parasequence level below the major discontinuity surface are revealed by alternations of rudist assemblages dominated by clinger or recumbent forms as well as intercalated hardground and subaerial exposure stages. Expanded phases of subaerial exposure, however, can be largely ruled out following the geochemical and cement-petrographic data presented here. Enhanced continent-derived siliciclastic input characterising the lower orbitolinid-oyster dominated limestones is in support of a shift to more humid conditions during the middle Early Aptian. This is in line with palaeoclimatic data, which propose a southward movement of the mid-latitude arid climate belt during this time. The documented rapid replacement of oligotrophic assemblages by various environmental-stress adapted carbonate platform communities might be seen as explanation for ongoing Early Aptian proto-North Atlantic carbonate production during a time of widespread platform demise and drowning in the northern Tethyan realm. (C) 2014 Elsevier B.V. All rights reserved.
This study focuses on evaluating the potential of ALOS/PALSAR time-series data to analyze the activation of deep-seated landslides in the foothill zone of the high mountain Alai range in the southern Tien Shan (Kyrgyzstan). Most previous field-based landslide investigations have revealed that many landslides have indicators for ongoing slow movements in the form of migrating and newly developing cracks. L-band ALOS/PALSAR data for the period between 2007 and 2010 are available for the 484 km(2) area in this study. We analyzed these data using the Small Baseline Subset (SBAS) time-series technique to assess the surface deformation related to the activation of landslides. We observed up to +/- 17 mm/year of LOS velocity deformation rates, which were projected along the local steepest slope and resulted in velocity rates of up to -63 mm/year. The obtained rates indicate very slow movement of the deep-seated landslides during the observation time. We also compared these movements with precipitation and earthquake records. The results suggest that the deformation peaks correlate with rainfall in the 3 preceding months and with an earthquake event. Overall, the results of this study indicated the great potential of L-band InSAR time series analysis for efficient spatiotemporal identification and monitoring of slope activations in this region of high landslide activity in Southern Kyrgyzstan.
The Antarctic terrestrial environment is under increasing pressure from human activities. The Fildes Region is characterized by high biodiversity, but is also a major logistic centre for the northern Antarctic Peninsula. Different interests, from scientific research, nature conservation, protection of geological and historical values, station operations, transport logistics and tourism, regularly overlap in space and time. This has led to increasing conflict among the multiple uses of the region and breaches of the legal requirements for environmental protection that apply in the area. The aim of this study was to assess the impacts of human activities in the Fildes Region by monitoring the distribution of bird and seal breeding sites and recording human activities and their associated environmental impacts. Data from an initial monitoring period 2003-06 were compared with data from 2008-10. We observed similar or increased levels of air, land and ship traffic, but fewer violations of overflight limits near Antarctic Specially Protected Area No. 150 Ardley Island. Open waste dumping and oil contamination are still major environmental impacts. Scientific and outdoor leisure activities undertaken by station personnel are more frequent than tourist activities and are likely to have a commensurate level of environmental impact. Despite the initial success of some existing management measures, it is essential that scientific and environmental values continue to be safeguarded, otherwise environmental impacts will increase and the habitat will be further degraded. We argue that the Fildes Region should be considered for designation as an Antarctic Specially Managed Area, a measure that has proven effective for environmental management of vulnerable areas of the Antarctic.
Intransitive competition is widespread in plant communities and maintains their species richness
(2015)
Intransitive competition networks, those in which there is no single best competitor, may ensure species coexistence. However, their frequency and importance in maintaining diversity in real-world ecosystems remain unclear. We used two large data sets from drylands and agricultural grasslands to assess: (1) the generality of intransitive competition, (2) intransitivity-richness relationships and (3) effects of two major drivers of biodiversity loss (aridity and land-use intensification) on intransitivity and species richness. Intransitive competition occurred in >65% of sites and was associated with higher species richness. Intransitivity increased with aridity, partly buffering its negative effects on diversity, but was decreased by intensive land use, enhancing its negative effects on diversity. These contrasting responses likely arise because intransitivity is promoted by temporal heterogeneity, which is enhanced by aridity but may decline with land-use intensity. We show that intransitivity is widespread in nature and increases diversity, but it can be lost with environmental homogenisation.