BIRDS

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In this column, author John J. Walsh revisits a past column explaining questions that can help in choosing the best fluid-bed dryer for an application.

Scientific Reports - Publisher Correction: Imaging the transmembrane...

Glioblastoma progression involves multifaceted changes in vascularity, cellularity, and metabolism. Capturing such complexities of the tumor niche, from the tumor core to the periphery, by magnetic resonance imaging (MRI) and spectroscopic imaging (MRSI) methods has translational impact. In human-derived glioblastoma models (U87, U251) we made simultaneous and longitudinal measurements of tumor perfusion (Fp), permeability (Ktrans), and volume fractions of extracellular (ve) and blood (vp) spaces from dynamic contrast enhanced (DCE) MRI, cellularity from apparent diffusion coefficient (ADC) MRI, and extracellular pH (pHe) from an MRSI method called Biosensor Imaging of Redundant Deviation in Shifts (BIRDS). Spatiotemporal patterns of these parameters during tumorigenesis were unique for each tumor. While U87 tumors grew faster, Fp, Ktrans, and vp increased with tumor growth in both tumors but these trends were more pronounced for U251 tumors. Perfused regions between tumor periphery and core with U87 tumors exhibited higher Fp, but Ktrans of U251 tumors remained lowest at the tumor margin, suggesting primitive vascularization. Tumor growth was uncorrelated with ve, ADC, and pHe. U87 tumors showed correlated regions of reduced ve and lower ADC (higher cellularity), suggesting ongoing proliferation. U251 tumors revealed that the tumor core had higher ve and elevated ADC (lower cellularity), suggesting necrosis development. The entire tumor was uniformly acidic (pHe 6.1-6.8) ...

Climate change is known to be dominantly caused by the increased concentration of greenhouse gases in the atmosphere, in particular CO2. To prevent excessive accumulation of CO2 in the atmosphere and the perturbation of natural carbon cycles, carbon capture and sequestration (CCS) is urgently needed. In this review, a brief overview is provided for both biotic and abiotic CO2 sequestration pathways. Special focus is given to sequestration approaches pertaining to clathrate hydrates. CO2 hydrate, a solid compound made of molecular CO2 enclathrated in crystalline lattices formed by water molecules, is an attractive option for long-term CO2 sequestration due to its higher density than seawater, stability below moderate oceanic/permafrost depths, low susceptibility to fluid flow perturbation when formed in sediments. This review compiles and summarizes the research efforts made on CO2 sequestration as hydrates. Various approaches of CO2 sequestration via gas hydrates are discussed, including storage in seawater, sediments under the sea floor, permafrost regions, methane hydrate reservoirs via CO2–CH4 exchange, and depleted gas fields. The technical feasibility and potential storage capacity of these approaches are analyzed. Finally, the key scientific challenges and prospects are identified and highlighted. Issues related to economics, scale-up, and relative attractiveness versus non-hydrate methods are touched upon but are not the focus of this work.

At SFI we believe in the ability of science, technology, engineering & maths to effect positive change in the world and drive a sustainable international economy. https://www.sfi.ie/research-news/news/icrag-kobold-metals/

Research and Administrative Support Officer, UCD School of Earth Sciences

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[et_pb_section bb_built=”1″ fullwidth=”on” _builder_version=”3.0.47″ next_background_color=”#000000″][et_pb_fullwidth_image src=”https://eurogeologists.eu/wp-content/uploads/2017/10/1311414_55483918-e1508413200741.jpg” _builder_version=”3.0.77″ /][/et_pb_section][et_pb_section bb_built=”1″ _builder_version=”3.0.47″ prev_background_color=”#000000″][et_pb_row _builder_version=”3.0.47″ background_size=”initial” background_position=”top_left” background_repeat=”repeat” _i=”0″ _address=”1.0″][et_pb_column type=”4_4″][et_pb_text _builder_version=”3.19.18″] ICRAG seminar: debating forthcoming challenges for geosciences under the next EU framework programme   [/et_pb_text][et_pb_text _builder_version=”3.19.18″] iCRAG, the Irish Centre for Research in Applied Geosciences, has hosted a seminar on the theme of “Exploring Geoscience Collaboration […]

Successful installation of the TIGER at the Trinity College has been completed. This cutting edge SEM is bringing a new technology approach into still growing geosciences and TESCAN is proud of being part of this advance.

Science Foundation Ireland research centres iCRAG, the SFI Research Centre for Applied Geosciences, and SSPC, the SFI Research Centre for Pharmaceuticals, have announced the start of the 2021 National Crystal Growing Competition at the BTYS Exhibition. The competition challenges primary and post-primary level students to grow a single crystal, judged by expert scientists at the iCRAG and SSPC research centres.

2/12/19 ***NO REPRO FEE*** Decarbonisation will involve most profound social transformation since the Industrial Revolution. Pictured are Dr Elizabeth Eide American Geosciences Institute, Professor Murray Hitzman Director of ICRAG, Dr Sarah Gordon University of Otago and John Thompson Cornell University. Decarbonisation will involve the most profound social adjustments and transformations since the Industrial Revolution. That’s according to Professor Murray Hitzman, Director of iCRAG the SFI Research Centre for Applied Geosciences at the iCRAG2019 conference - Resources for a Sustainable Future - which is taking place in Dublin today. The conference brings together 250 members of the academic geoscience community as well as industry and government to deliver insights into future directions for Irish geoscience research and how the geoscience research sector can play a leading role in addressing the Climate Action Plan and Ireland's commitments to the UN Sustainable Development Goals. Pic: Marc O’Sullivan

The SFI research centre will analyse mineral samples for Bill Gates-backed KoBold Metals. The post iCRAG partners with US start-up using AI to find metals for EVs appeared first on Silicon Republic.