24 Postdoctoral Fellowship at University of Hamburg, Germany

Duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications.

 The tasks within the project include the computation of higher order QCD corrections to collider observabales and operator anomalous dimensions as well as phenomenology applications with an eye on the Large Hadron Collider LHC and the forth-coming Electron Ion Collider EIC.

The MoLiCarb project aims to assess the role of vegetation, in particular mosses and lichens, for carbon content of permafrost soils at high latitudes and associated climate impacts. Effects of mosses and lichens on the soil carbon balance and their consequences for climate are currently poorly represented in Earth System Models (ESMs), although they maybe highly relevant, particularly at high latitudes (carbon input, soil cooling). Permafrost soil carbon in these regions is of great importance for future climate, since thawing of the soil will likely lead to strong emissions of CO2 and a positive feedback on global warming. More advanced models of moss and lichen effects on high-latitude ecosystem carbon fluxes that can inform ESMs are therefore urgently needed. While observational data for current climatic conditions are usually not sufficient to constrain model projections on coupled vegetation-soil carbon dynamics at high-latitudes for the next decades, sedimentary ancient DNA (sedaDNA) may help to quantify the long-term relationships between vegetation, climate, and soil carbon and thus reduce this uncertainty substantially.

In MoLiCarb, we will address the following questions: 1) How strong is the effect of mosses and lichens on today’s dynamics of soil carbon in permafrost regions? 2) To what extent did mosses and lichens contribute to build-up of soil carbon since the last glacial maximum? 3) How will mosses and lichens affect permafrost carbon release in the next decades?

Duties primarily include teaching and research. Research associates may also pursue independent research and further academic qualifications.

Specific Duties

• planning, implementation, evaluation and publication of measurement results from experiments at large-scale facilities with variable polarization
• independent experiments with optical lasers in the laser laboratory
• ongoing review and content evaluation of relevant scientific literature
• presentation of scientific results at international conferences
• preparation of scientific publications
• scientific profile building in multinational collaboration
• support in supervision of doctoral students and general group organization with a focus on experiment planning

Research associates will be expected primarily to teach and conduct research. The research associate will also have the opportunity to pursue further academic qualifications, in particular a doctoral dissertation. At least one-third of set working hours will be made available for the research associate’s own academic work.

As part of your dissertation, you will write three to four scientific papers in the field of political economy and/or organizational economics, one of them in sole authorship, present them at conferences and submit them for publication in international peer-reviewed journals (Handelsblatt ranking A+ to C). You continue your education at at least one summer school and interact with the professor (primary reviewer), with other doctoral students and postdocs in the team, and with researchers in the department and faculty. This includes attending research seminars at the department. Funding is provided for conference travel and summer schools as well as submissions for publication. You will be involved in teaching by giving tutorials on lectures in B.Sc. Economics (e.g. Microeconomics I and II, Microeconomics for Business students) and other related tasks. Your teaching load is 3 LVS.

Duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications.

The Project PalMod Phase III is a project between Universität Hamburg and several other German research institutes and universities, funded by the Federal Ministry of Education and Science (BMBF), to understand Earth system dynamics and variability during the last glacial cycle.

Model simulations in PalMod Phase II with cryosphere-ocean-atmosphere interactions in MPI-ESM have captured some features of the abrupt events of the last deglaciation (Heinrich events, Bølling-Allerød warming, Younger Dryas). Studies of marine sediments show that such abrupt events profoundly affect ocean biogeochemistry. Nevertheless, the cascades of changes in oceanic biogeochemistry have not yet been examined using comprehensive Earth system models with interactive carbon cycle. The planned work will address this knowledge gap. The project will focus on examining the response of the ocean carbon storage and biogeochemical cycles to abrupt events in MPI-ESM projections spanning the last deglaciation and future climate change scenarios with the goal to improve our quantitative understanding of the observed cascades of change.

We are offering a position for one researcher to address the question whether aragonite forming at marine methane seeps records the molybdenum isotopic composition of seawater. The position is funded by the Deutsche Forschungsgemeinschaft (DFG) for 3 years. The candidate will be member of the working group Geology in the Earth System. The project will be carried out jointly with the Geochemistry group of the Institute of Mineralogy, University of Hannover, led by Stefan Weyer. The successful candidate will benefit from a vibrant research environment and an interdisciplinary team.

The researcher will study aragonite cement collected from methane seeps worldwide, and measure its Mo isotope composition and other inorganic geochemical parameters. She/he will obtain cutting-edge knowledge and analytical expertise on stable isotope geochemistry, as well as its application to methane-seep environments and past seawater evolution. She/he will contribute to the interpretation of results, publication and the presentation of the project’s results.

Duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications.

The post-doctoral researcher at Universität Hamburg will be a connecting link between chemically (UHH) and methodologically (DESY, KTH) driven efforts to develop Stereoscopic X-Ray Vision to Investigate Nanoparticles. The postdoc will focus on implementing and testing the newly developed experimental in-situ environment and investigating nanomaterials. To this end he/she will write the beamtime application, coordinate the beamtime preparation and will perform the in-situ experiments jointly with the team at KTH, UHH and DESY. Additionally, he/she will apply the numerical algorithms required to combine multi-beam and multi-slicing ptychography.

We are looking for a candidate who has demonstrable interests, skills and experience in palaeontology/palaeoecology, with evidence of having successfully undertaken a geoscience research project at the undergraduate or master’s level. Additional experience of one or more of the following would be an advantage: taxonomy of a microfossils or another invertebrates, working in a research lab, geological fieldwork, multivariate statistics, computer programming in R, Matlab or Python. The applicant should be fluent in English and engaged in teamwork. German language fluency is not required, but a willingness to learn German is expected.

Research associates will be expected primarily to teach and conduct research. The research associate will also have the opportunity to pursue further academic qualifications, in particular a doctoral dissertation. At least one-third of set working hours will be made available for the research associate’s own academic work.

The research topics include the synthesis and characterization of novel colloidal nanoparticles (magnetic, plasmonic, or photoluminescent) and/or their assembly into microscopic and macroscopic functional superstructures. As an example of microscopic superstructures, multifunctional magnetic or optical objects in solution can be mentioned, with applications in nanobiomedicine, for instance. Examples of macroscopic superstructures are optically active new aerogel materials with potential applications in photocatalysis, electrocatalysis, and sensing. Studying structure-property relationships using modern analytical techniques (such as optical spectroscopy, electrochemistry, spectroelectrochemistry, porosimetry, magnetometry, and electron microscopy) on the new materials provides insights into the connection between nano- and microstructure and the resulting material properties.

Research associates will be expected primarily to teach and conduct research. The research associate will also have the opportunity to pursue further academic qualifications, in particular a doctoral dissertation. At least one-third of set working hours will be made available for the research associate’s own academic work.

The scientific goals of this position range from advancing the understanding of the principles of superconductivity to its applications. On the basic research side, the research associate will investigate light-induced dynamics in superconductors, with numerical and analytical tools, in particular with lattice gauge theories. On the applied side, technological applications will be explored, e.g. of light-matter systems of superconductors, as well as quantum technological applications.

Duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications.

Writing a monograph and an article (peer reviewed) on one of two topics in the field of “Difficult Heritage”: either about 1. colonial monuments in Colombia or about 2. difficult heritage and visual scepticism in the museum. In addition, participation in project publications, in the organisation of conferences and the editing of publications within the framework of the ERC-project “Visual Scepticism” is expected.

(18) Postdoctoral Fellowship Position

Postdoc Fellowship Position summary/title: Research Associate Chemical Engineer § 28 Subsection 3 HmbHG

Deadline : 10.03.2024

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The Albert research group, in close collaboration with industrial and academic partners, focuses on substituting fossil-based basic chemicals with chemical feedstocks derived from renewable resources.

To strengthen our scientific team, we are seeking a committed and highly qualified Chemical Engineer, Process Engineer, or Technical Chemist.

Research activities will focus on the conceptual design, construction and commissioning of high-pressure plants as well as the safe operation and supervision of fully continuous miniplants. Within the framework of several projects, we are planning and operating various multiphase reactors, which are equipped, among other things, with novel reactor concepts (jet loop reactors) and recycling units (e.g. membrane separation). The successful commissioning and characterization of the miniplants will enable the transition from batch to continuous operation. Reaction engineering studies to determine the influence of various process parameters on reactor performance and space-time yield will be performed using various model reactions. Reaction systems that enable the substitution of fossil base chemicals by chemical feedstocks based on renewable raw materials will be specifically investigated. The establishment of different methods for the analysis of liquid and gas phase products is also part of the advertised position.

This is a PhD position, intended to pursue doctoral studies with the goal to obtain a doctoral degree in natural sciences (‘Dr. rer nat.’). The position is located in the Department of Evolutionary Immunogenomics, and the successful candidate will be supervised and mentored by Prof. Tobias Lenz.

The department‘s primary research focus is the study of genetic variability in the adaptive immune system of vertebrates and its importance for disease susceptibility and co-evolution between hosts and their parasites. Special attention is given to important molecular and genetic components in the antigen-specific immune response (MHC/HLA, antigens, T cell receptors). The two main host model systems used in the department are humans and three-spined sticklebacks (Gasterosteus aculeatus). We use both experimental and molecular approaches (mainly with sticklebacks), and computational approaches (with both human and stickleback data) to improve our understanding of antigen-specific immunity and its role in complex diseases and fitness. The successful candidate will develop their own doctoral research projects within this context, under the guidance of their mentor. Several project ideas are available and can be tailored to the candidate’s interest and experience.

Duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications.

• innovative research in the field of metal- and photocatalysis as well as circular chemistry
• development of novel catalysts for sustainable chemical processes
• synthesis of new metal complexes and dyes, their use as (photo)catalysts for organic syntheses and small molecule activation
• elucidation of reaction mechanisms using modern spectroscopic methods
• the further development of sustainable catalytic processes and the establishment of novel reactions
• interdisciplinary collaboration with scientists from physics, theory and materials chemistry to contribute towards the overarching goals of the research project
• writing research papers for internationally refereed journals and presenting results at national and international conferences
• active involvement in the multidisciplinary and diverse research and teaching activities of the GRK Nanohybrid graduate program

Duties include academic services in the project named above. Research associates may also pursue independent research and further academic qualifications.

There are two positions with complementary tasks available for this project.

The project aims at boosting the flux of a laser-driven HHG-based extreme-ultraviolet source to a level required for demanding applications in industry. In close collaboration with partners from industry and DESY, the two position holders will be responsible for the design, assembly and characterization of the EUV source and shall demonstrate an application in EUV scattering.

The successful candidate will be part of the ERC Starting Grant funded project called HIGH-Q. The project is dedicated to increasing the spatial resultion and material contrast of mages recorded with extremely short X-ray pulses. The goal is to combine record spatial and temporal resolutions and follow conformational changes of individual nanoparticles during chemical reactions and phase transitions. We focus on using attosecond-short to few femtosecond intense X-ray pulses from Free-Electron-Lasers. There are two branches of the project. First, our group is designing experiments which explore non-linear diffraction enhancement in order to increase spatial resolution. Second, we apply super-resolution algorithms, which computationally increase the spatial resolution of diffraction images during post-processing.

The successful candidate will combine both project parts based on first promising results from preliminary studies. In addition, the candidate will conduct and analyse follow-up experiments. The position will include preparation of beam times at international Free-Electron-Lasers facilities in Japan, US, Switzerland and Germany, data analysis and interpretation based on simulations.

Duties include teaching and research in the respective department or institute. Research associates may also pursue independent research and further academic qualifications as well as acquire teaching experience. These duties are intended to promote academic achievement. Therefore, at least one-third of set working hours will be made available for the associate’s own academic work.

The teaching load is 5 hours per semester, and comprises both own courses and tutorials, as well as the supervision of Bachelor’s and Master’s theses. The successful candidate will have the opportunity to work in a collegial and research-oriented team, as part of a dynamic department.