Tootfinder

An der Hochschule #Wismar entsteht eine Anlage, die #Wasserstoff als #Formiatsalz speichert.
Die Methode ermöglicht eine einfache Ein- und Ausspeicherung, vergleichbar mit einem Akku, und k…

H2-Batterie: Wasserstoffsalz ist besser als jeder Tank - Golem.de
Aufbauend auf abgeschlossenen Forschungen entsteht eine Anlage, die Wasserstoff mit hoher Energiedichte und wirtschaftlich in Pulverform speichert.

Improved H2-He and H2-H2 Collision-Induced Absorption Models and Application to Outer-Planet Atmospheres
Glenn S. Orton, Magnus Gustafsson, Leigh N. Fletcher, Michael T. Roman, James A. Sinclair
https://arxiv.org/abs/2506.09257

Improved H2-He and H2-H2 Collision-Induced Absorption Models and Application to Outer-Planet Atmospheres
Using state-of-the-art ab initio interaction-induced dipole and potential-energy surfaces for hydrogen-helium (H2-He) pairs, we compute the rototranslational collision-induced absorption coefficient at 40-400 K for frequencies covering 0-4000 cm-1. The quantum mechanical scattering calculations account for the full anisotropic interaction potential, replacing the isotropic approximation. The absorption data are expected to be accurate with an uncertainty of 2% or better up to 2500 cm-1. The unc…

Kurzanleitung für den Dümmer (See)

Gestern war ich zum ersten Mal am Dümmer, Niedersachsens zweitgrößtem See. Natürlich wollte ich nicht mit dem Auto hin, sondern mit Zug & Rad.

1. Im Osnabrücker Hauptbahnhof Olaf's Laden besuchen (Bild 1). Er befindet sich zwischen den Gleisen 11 und 12, also unten.
2. Mit dem RE9 nach Lemförde fahren. Dort nicht den offiziellen Ausgang nehmen, sondern die Hintertür (auf halber Treppe zum Gleis 2, siehe Bild 2). Von dort führt ein w…

Unter den von der israelischen Armee festgenommenen Aktivist:innen befindet sich auch die deutsche Staatsbürgerin Yasemin Acar. Wir müssen jetzt Druck aufbauen um für ihre Freilassung zu kämpfen!
Dies ist ein Kidnapping. Das israelische Militär hat kein Recht auf internationalen Gewässern Menschen festzunehmen und ist auch keine rechtliche Repräsentation für den Gazastreifen. Hier wird ein Land mal wieder mit etwas durchkommen was höchstgradig illegal ist!

WAS Z…

Deutscher Bundestag - Abgeordnete
Eine Übersicht über die gewählten Abgeordneten des Deutschen Bundestages, die Wahlkreise und Informationen über Tätigkeiten sowie Einkünfte, Pauschalen und Sachleistungen.

The HI-to-H2 transition in the Draco cloud
Nicola Schneider (I. Physik.Institut, University of Cologne), Volker Ossenkopf-Okada (I. Physik.Institut, University of Cologne), Markus Roellig (Physikalischer Verein, Frankfurt, I. Physik.Institut, University of Cologne), Daniel Seifried (I. Physik.Institut, University of Cologne), Ralf S. Klessen (University of Heidelberg, Zentrum fuer Astronomie, Heidelberg), Alexei G. Kritsuk (Physics Department, University of California, San Diego), Edua…

The HI-to-H2 transition in the Draco cloud
In recent decades, significant attention has been dedicated to analytical and observational studies of the atomic hydrogen (HI) to molecular hydrogen (H2) transition in the interstellar medium. We focussed on the Draco diffuse cloud to gain deeper insights into the physical properties of the transition from HI to H2. We employed the total hydrogen column density probability distribution function (N-PDF) derived from Herschel dust observations and the N(HI)-PDF obtained from HI data collected by…

GlobalFoundries agrees to acquire MIPS, a developer of RISC-V-based solutions and IP, with the deal expected to close in H2 2025 (Anton Shilov/Tom's Hardware)
https://www.tomshardware.com/pc-components…

GlobalFoundries to make RISC-V CPUs — fab acquires MIPS, will integrate RISC-V and AI IP into its portfolio
For an unknown sum.

from my link log —
Three cases against IF NOT EXISTS / IF EXISTS in PostgreSQL DDL.
https://postgres.ai/blog/20211103-three-cases-against-if-not-exists-and-if-exists-in-postgresql-ddl
saved 2021-11-12

Three Cases Against IF NOT EXISTS / IF EXISTS in Postgres DDL | Postgres AI

What is this about?

Many DDL statements in PostgreSQL support modified IF EXISTS / IF NOT EXISTS. For example:

 test=# create table if not exists mytable(); CREATE TABLE test=# drop table if exists mytable; DROP TABLE 

I recommend using `IF EXISTS` / `IF NOT EXISTS`…

Paris s'éveille
Hype, the world’s largest hydrogen taxi operator, is to cease operating its fleet of hydrogen taxis in the Paris area
When the reality of #hydrogen costs hits home (and you still don't want to believe it)

'A form of oligopoly' | World’s largest hydrogen taxi operator hurls accusations at supply giants as it quits H2 in Paris
Hype argues that Air Liquide and TotalEnergies have presided over doubling of H2 prices in four years — which it says is blocking a credible path to green hydrogen use

Quotes that have evolved over time to add a twist

Imitation is the sincerest form of flattery that mediocrity can pay to greatness.
The original first half is by Charles Caleb Colton, Lacon: Or, Many Things in Few Words: Addressed to Those who Think (1820).
The second half was made up by Twitter and then falsely attributed the entire quote to Oscar Wilde, it's still a great addition, I think.
Jack of all…

Electron impact ro-vibrational transitions and dissociative recombination of H2 and HD : Rate coefficients and astrophysical implications
Riyad Hassaine, Emerance Djuissi, Nicolina Pop, Felix Iacob, Michel D. Ep\'ee Ep\'ee, Ousmanou Motapon, Vincenzo Laporta, Razvan Bogdan, Mehdi Ayouz, Mourad Telmini, Carla M. Coppola, Daniele Galli, Janos Zs. Mezei, Ioan F. Schneider

Electron impact ro-vibrational transitions and dissociative recombination of H2+ and HD+: Rate coefficients and astrophysical implications
Context. Molecular hydrogen and its cation H+2 are among the first species formed in the early Universe, and play a key role in the thermal and chemical evolution of the primordial gas. In molecular clouds, H+2 ions formed through ionization of H2 by particles react rapidly with H2 to form H+3 , triggering the formation of almost all detected interstellar molecules. Aims. We present a new set of cross sections and rate coefficients for state-to-state ro-vibrational transitions of the H+2 and HD…

Boosting hydrogen and methane formation on a high-entropy photocatalyst by integrating atomic d0/d10 electronic junctions and microscopic P/N heterojunctions
Ho Truong Nam Hai, Jacqueline Hidalgo-Jim\'enez, Kaveh Edalati
https://arxiv.org/abs/2508.01963

Boosting hydrogen and methane formation on a high-entropy photocatalyst by integrating atomic d0/d10 electronic junctions and microscopic P/N heterojunctions
The formation of green energy carriers such as hydrogen (H2) and methane (CH4) via photocatalytic processes provides a clean method for addressing environmental and energy issues. To achieve highly efficient photocatalysts for H2 and CH4 generation, the present work introduces the P/N heterojunctions in a high-entropy oxide (HEO) with d0/d10 electronic junctions. The study uses CuO as a P-type semiconductor and the HEO containing d0 (Ti, Zr, Nb, Ta) and d10 (Zn) cations as an N-type semiconduct…

Air Liquide has taken final investment decision on its 200MW green hydrogen project at the Port of Rotterdam, after securing subsidies from the Dutch government.
23,000 tonnes of green hydrogen per year, using electricity from offshore wind. To be operational in 2027.
https://w…

Pressure-mediated crystalline g-C3N4 with enhanced spatial charge transport for solar H2 evolution and photocathodic protection of 304 stainless steels
Xiaochun Gao, Shaoqi Hou, Dawei Su
https://arxiv.org/abs/2507.18914

Pressure-mediated crystalline g-C3N4 with enhanced spatial charge transport for solar H2 evolution and photocathodic protection of 304 stainless steels
Conjugated polymeric g-C3N4 has emerged as a leading semiconductor for solar-to-chemical energy conversion due to its unique electronic band structure, robust physicochemical stability, and environmental benignity. However, defect engineering-while effective at enhancing visible-light absorption and charge separation-often introduces excessive dangling bonds and lattice disorder, which exacerbate carrier recombination and impair light harvesting. High crystallinity offers a complementary route …

Can cosmic rays explain the high ionisation rates in the Galactic centre?
Sruthiranjani Ravikularaman, Sarah Recchia, Vo Hong Minh Phan, Stefano Gabici
https://arxiv.org/abs/2508.01344

Can cosmic rays explain the high ionisation rates in the Galactic centre?
The Central Molecular Zone (CMZ), located in the centre of the Milky Way, is a roughly cylindrical structure of molecular gas extending up to parsecs around the supermassive black hole Sagittarius A*. The average H2 ionisation rate in the CMZ is estimated to be 2e-14 s-1, which is 2-3 orders of magnitude higher than anywhere else in the Galaxy. Due to the high gas density in this region, electromagnetic radiation is rapidly absorbed, leaving low-energy cosmic rays (CRs) as the only effective io…

Kuo expects Apple to mass produce a Vision Pro with M5 in Q3 2025, a Vision Air in Q3 2027, a Vision Pro with a new design and XR glasses in H2 2028, and more (Marcus Mendes/9to5Mac)
https://9to5mac.com/2025/06/29/apple-working-on-7-head-mounted-products/

Kuo: Apple working on 7 head-mounted products - 9to5Mac
According to him, the company has at least seven head-worn devices in development across two product families, one coming in 2025.

Adaptive Sketching Based Construction of H2 Matrices on GPUs
Wajih Halim Boukaram, Yang Liu, Pieter Ghysels, Xiaoye Sherry Li
https://arxiv.org/abs/2506.16759

Adaptive Sketching Based Construction of H2 Matrices on GPUs
We develop a novel linear-complexity bottom-up sketching-based algorithm for constructing a $H^2$ matrix, and present its high performance GPU implementation. The construction algorithm requires both a black-box sketching operator and an entry evaluation function. The novelty of our GPU approach centers around the design and implementation of the above two operations in batched mode on GPU with accommodation for variable-size data structures in a batch. The batch algorithms minimize the number …

Deutschland fängt sich einen Tadel von der UNO ein, weil wir einen Innenminister Dobrindt haben, der sich einen Dreck um geltendes Recht schert.
Zeit, an die #Remonstrationspflicht zu erinnern! Die besagt, dass Beamt:innen die Pflicht haben, sich rechtswidrigen Anordnungen zu widersetzen.
Der UN-Hochkommissar für F…

Do you need Hydrogen to power a small ship🚢 covering a distance of 5 kilometers? No. It can easily be done with batteries🔋
Yet the ferry MF Hydra in 🇳🇴 runs not just on Hydrogen but on Liquefied Hydrogen💧, transported more than 1,300km from Germany🚚🇩🇪
The ferry was supposed to use H2 made in an electrolyzer, but that was delayed for multiple years.
Where's the Hydrogen💧 coming from that the MF Hydra consumes? Unclear.
I made a video🎥

How Massive Star Clusters Form and Evolve: A Near-IR Survey of the W51 Complex
Aden Dawson, Adam Ginsburg, Carlos Roman-Zuniga
https://arxiv.org/abs/2507.23112 https://

How Massive Star Clusters Form and Evolve: A Near-IR Survey of the W51 Complex
We present near-infrared JHKs and narrow-band H2(1-0) photometric observations of the W51A region, obtained with GTC EMIR, aiming to characterize its young stellar population and provide mass estimates for individual cluster members and the proto-clusters. Our observations reveal over 3000 new sources, out of which 88 are located in the proto-clusters, W51 IRS2 and W51 Main. The average extinction (AV), measured from the J-H color, of sources is 19 AV in W51 IRS2 and 14 AV in W51 Main. We docum…

The role of Projects of Common Interest in reaching Europe's energy policy targets
Bobby Xiong, Iegor Riepin, Tom Brown
https://arxiv.org/abs/2507.01860

The role of Projects of Common Interest in reaching Europe's energy policy targets
The European Union aims to achieve climate-neutrality by 2050, with interim 2030 targets including 55% greenhouse gas emissions reduction compared to 1990 levels, 10 Mt p.a. of a domestic green H2 production, and 50 Mt p.a. of domestic CO2 injection capacity. To support these targets, Projects of Common and Mutual Interest (PCI-PMI) - large infrastructure projects for electricity, hydrogen and CO2 transport, and storage - have been identified by the European Commission. This study focuses on PC…

Parallel Alignments between Magnetic Fields and Dense Structures in the Central Molecular Zone
Xing Pan, Qizhou Zhang, Keping Qiu, Dylan Pare, David Chuss, Natalie Butterfield, Robin Tress, Mattia Sormani, Yuping Tang, Steven Longmore, Thushara Pillai
https://arxiv.org/abs/2508.04599

Parallel Alignments between Magnetic Fields and Dense Structures in the Central Molecular Zone
The recent Far-Infrared Polarimetric Large-Area Central Molecular Zone Exploration (FIREPLACE) survey with SOFIA has mapped plane-of-the-sky magnetic field orientations within the Central Molecular Zone (CMZ) of the Milky Way. Applying the Histogram of Relative Orientation (HRO) analysis to the FIREPLACE data, we find that the relative orientation between magnetic fields and column density structures is random in low-density regions (2x10^22

Volatile-rich evolution of molten super-Earth L 98-59 d
Harrison Nicholls, Tim Lichtenberg, Richard D. Chatterjee, Claire Marie Guimond, Emma Postolec, Raymond T. Pierrehumbert
https://arxiv.org/abs/2507.02656

Volatile-rich evolution of molten super-Earth L 98-59 d
Small low-density exoplanets are sculpted by strong stellar irradiation but their origin is unknown. Two competing scenarios are that they formed either with rocky interiors and H2-He atmospheres (`gas-dwarfs'), or instead with bulk compositions dominated by H2O phases (`water-worlds'). Observations of L 98-59 d have revealed its unusually low density and spectral characteristics, opening a window for disentangling its origin. We constrain the possible range of evolutionary histories linking L …

Hydrogen bond symmetrization in high-pressure ice clathrates
Lorenzo Monacelli, Maria Rescigno, Alasdair Nicholls, Umbertoluca Ranieri, Simone Di Cataldo, Livia Eleonora Bove
https://arxiv.org/abs/2506.13169

Hydrogen bond symmetrization in high-pressure ice clathrates
Hydrogen bond symmetrization is a fundamental pressure-induced transformation in which the distinction between donor and acceptor sites vanishes, resulting in a symmetric hydrogen-bond network. While extensively studied in pure ice, most notably during the ice VII to ice X transition, this phenomenon remains less well characterized in hydrogen hydrates. In this work, we investigate hydrogen bond symmetrization in the high-pressure phases of hydrogen hydrate (H2-H2O and H2-D2O) through a combine…

Numerical Modeling of n-Hexane Pyrolysis with an Optimized Kinetic Mechanism in a Hydrogen Plasma Reactor
Subin Choi, Chanmi Jung, Dae Hoon Lee, Jeongan Choi, Jaekwang Kim
https://arxiv.org/abs/2506.13789

Numerical Modeling of n-Hexane Pyrolysis with an Optimized Kinetic Mechanism in a Hydrogen Plasma Reactor
The physicochemical mechanisms underlying the pyrolysis of n-hexane in a high temperature Ar-H2 environment were investigated for plasma pyrolysis process. An optimal chemical kinetics model was developed using the Reaction Mechanism Generator (RMG), an automated tool for constructing reaction mechanisms. This model was validated through 0-D analyses, where simulation result were compared with existing kinetic models (LLNL,JetSurf) and experimental data from conventional n-hexane pyrolysis. Sub…

Unraveling the non-equilibrium chemistry of the temperate sub-Neptune K2-18 b
A. Y. Jaziri, O. Sohier, O. Venot, N. Carrasco
https://arxiv.org/abs/2507.14983

Unraveling the non-equilibrium chemistry of the temperate sub-Neptune K2-18 b
The search for habitable, Earth-like exoplanets faces major observational challenges due to their small size and faint signals. M-dwarf stars offer a promising avenue to detect and study smaller planets, especially sub-Neptunes-among the most common exoplanet types. K2-18 b, a temperate sub-Neptune in an M-dwarf habitable zone, has been observed with HST and JWST, revealing an H2-rich atmosphere with CH4 and possible CO2. Conflicting interpretations highlight the importance of non-equilibrium c…

A water-rich interior in the temperate sub-Neptune K2-18 b revealed by JWST
Renyu Hu, Aaron Bello-Arufe, Armen Tokadjian, Jeehyun Yang, Mario Damiano, Pierre-Alexis Roy, Louis-Philippe Coulombe, Nikku Madhusudhan, Savvas Constantinou, Bj\"orn Benneke
https://arxiv.org/abs/2507.12622…

A water-rich interior in the temperate sub-Neptune K2-18 b revealed by JWST
Temperate sub-Neptunes are compelling targets for detecting liquid-water oceans beyond the Solar System. If water-rich and lacking massive hydrogen-helium envelopes, these planets could sustain liquid layers beneath their atmospheres despite sizes larger than Earth. Previous observations of the temperate sub-Neptune K2-18 b revealed an H2-dominated atmosphere rich in CH4, with moderate evidence for CO2 and tentative signs of dimethyl sulfide (DMS). Here we present four new JWST/NIRSpec transit …

Heating, Excitation, Dissociation, and Ionization of Molecules by High-Energy Photons in Planetary Atmospheres
Antonio Garc\'ia Mu\~noz, Ewan Bataille
https://arxiv.org/abs/2506.12956

Heating, Excitation, Dissociation, and Ionization of Molecules by High-Energy Photons in Planetary Atmospheres
Photoionization by high-energy photons creates nonthermal electrons with a broad range of energies that heat and chemically transform the atmospheres of planets. The specifics of the interactions are notably different when the gas is atomic or molecular. Motivated by the idea that molecules survive to high altitudes in some exoplanets, we built a model for the energy transfer from nonthermal electrons to the H2O, H2, and O2 molecules. Our calculations show that the primary electrons of energy a…