bluuebunny/crossref_metadata_2025_split huggingface dataset:
Changes in human milk fatty acid composition and maternal lifestyle-related factors over a decade: a comparison between the two Ulm Birth Cohort Studies
Authors: Siziba Linda P. , Lorenz Leonie , Brenner Hermann , Carr Prudence , Stahl Bernd , Mank Marko , Marosvölgyi Tamás , Decsi Tamás , Szabó Éva , Rothenbacher Dietrich , Genuneit Jon 
Published: October 2020

AbstractHuman milk fatty acid composition varies during lactation and is influenced by maternal diet, maternal lifestyle-related factors and genetic background. This is one of the first studies to investigate a period effect, that is, the impact of lifestyle-related changes on human milk fatty acid composition, in two different cohorts. Lactating women were recruited from the general population a decade apart in Ulm, Germany, using similar methodology. Human milk samples collected 6 weeks postpartum were analysed (Ulm Birth Cohort Study (UBCS (2000)), n 567; Ulm SPATZ Health Study (SPATZ (2012)), n 458). Centred log ratio transformation was applied to fatty acid data. Principal component analysis was used to determine study-dependent fatty acid profiles. A general linear model was used to determine the study (or period) effect on fatty acid profiles adjusting for duration of gestation, age, education, delivery mode, smoking and pre-pregnancy BMI. Two principal components were retained (PC1 and PC2). PC1 was associated with UBCS, while PC2 was associated with SPATZ. PC1 comprised high SFA, and low MUFA, n-6 and n-3 long-chain PUFA (LCPUFA). The inverse was true for PC2. Although human milk remains a source of essential fatty acids, infants could be at risk of inadequate n-3 and n-6 LCPUFA intake through human milk. The differences in the human milk fatty acid profiles also reflect changes in maternal dietary habits in the more recent cohort, which may comprise lower intakes of dietary trans-fatty acids and SFA and higher intakes of vegetable oils.
Reply to ‘Uppermost Cambrian carbon chemostratigraphy: the HERB and undocumented TOCE events are not synonymous’
Authors: Zhu Maoyan , Babcock Loren E. , Peng Shanchi , Ahlberg Per 
Published: October 2020

AbstractIn a recent communication on carbon isotope chemostratigraphy of the uppermost Cambrian strata, it was claimed that the Top of Cambrian Excursion (TOCE) is (1) an undocumented negative δ13Ccarb excursion; (2) ambiguously defined; (3) deliberately fictitious or, in the authors’ words, a ‘nihilartikel’; and (4) not synonymous with the Hellnmaria–Red Tops Boundary (HERB) Event. As the authors who have been involved in much of the discussion surrounding the TOCE since its introduction and in subsequent clarification, we wish to emphasize that the recent communication overlooks the fact that the TOCE is in fact a well-documented and clearly defined negative δ13Ccarb excursion, and that the term ‘HERB Event’ was originally used informally, without definition or reference data, for a negative δ13Ccarb peak, a peak later shown to occur within the TOCE excursion. Nearly a decade after the TOCE was named, the concept of the HERB Event was modified from a negative δ13Ccarb peak to a negative δ13Ccarb excursion, making it conceptually synonymous with the TOCE excursion. The recently published commentary is misleading and replete with misconceptions, as we discuss here.
The Early Chinese Press and the Agency of Its Readers: The Dynamics of the Transcultural Spread of the “Press” as an Institution
Authors: Wagner Rudolf 
Published: October 2020

AbstractHabermas saw the public sphere as coterminous with the national space. Anderson dreamed of newspaper readers facing the same paper for breakfast forming an “imagined community,” which he saw as vital for supplementing the subjective side of nationhood. Historical evidence supports neither proposition. Both remain locked in a nation-state focused history and have to sideline large and crucial parts of the record. This article studies two early Chinese-language periodical publications characterised by their radical difference to the standard European models, theEast Western Monthly Magazine(1833–1838) and theShenbao(1872–1949), and considers the implications of these examples for dominant conceptual frameworks.
The gas structure of the HD 163296 planet-forming disk - gas gaps or not?
Authors: Rab C. , Muro-Arena G. A. , Kamp I. , Dominik C. , Waters L. B. F. M. , Thi W-F. , Woitke P. 
Published: October 2020

AbstractHD 163296 is a young star surrounded by a planet-forming disk that shows clear signatures of dust gaps and rings; likely an indication of ongoing planet formation. We use the radiation thermochemical disk code ProDiMo to investigate the impact of dust/gas gaps on the temperature, chemistry and observables. Furthermore, we model high spatial resolution gas and dust observation of HD 163296 (ALMA/DSHARP). Our first results indicate that features in the observed radial intensity profile of the 12CO line are a consequence of the dust gaps and do not require gas depletion. Those preliminary results indicate that self-consistent modelling of the gas (chemistry, heating/cooling) and dust is necessary to accurately infer the degree of gas depletion within dust gaps. Such information is crucial to understand the processes that generate the disk substructure and their relation to planet formation.
Complex organic molecules tracing the comet-forming zones in protoplanetary disks
Authors: Walsh Catherine , Ilee John D. 
Published: October 2020

AbstractResolved emission from gas-phase methanol can reveal the abundance and distribution of the comet-forming ice reservoir in protoplanetary disks. ALMA Cycle 4 observations of four transitions of gas-phase methanol in TW Hya allow the first model-independent determination of the rotational temperature of methanol in a prototoplanetary disk. The data confirm that the methanol is rotationally cold (Trot < 50 K), and well constrain the column density to 2 × 1012 cm−2. Astrochemical models will constrain the chemical origin of methanol in TW Hya.
Photoprocessing of large PAH cations
Authors: Wenzel Gabi , Rodriguez Castillo Sarah , Mulas Giacomo , Ji Ming-Chao , Bonnamy Anthony , Sabbah Hassan , Giuliani Alexandre , Nahon Laurent , Joblin Christine 
Published: October 2020

AbstractIn cosmic environments, polycyclic aromatic hydrocarbons (PAHs) strongly interact with vacuum ultraviolet (VUV) photons emitted by young stars. Trapped PAH cations ranging in size from 30 to 48 carbon atoms were irradiated by tunable synchrotron light (DESIRS beamline at SOLEIL). Their ionization and dissociation cross sections were determined and compared with TD-DFT computed photoabsorption cross sections. Evidence for radiative cooling is reported.
Desorption of volatile molecules from the surface of interstellar carbonaceous dust analogs
Authors: Herrero Víctor J. , Maté Belén , Tanarro Isabel , Jiménez-Redondo Miguel , Peláez Ramón J. , Escribano Rafael 
Published: October 2020

AbstractThe desorption of volatile molecules from dust grains in cold dense clouds is crucial for the chemical inventory in the various stages of cloud collapse. In this work we investigate the desorption of N2, CO, CH4 and CO2 from surfaces of hydrogenated amorphous carbon (HAC), which, according to IR observations, is one of the main components of interstellar dust.
High resolution rotational spectroscopy of elusive molecules at the Center for Astrochemical Studies (CAS@MPE)
Authors: Spezzano Silvia , Lattanzi Valerio , Laas Jacob , Chantzos Johanna , Bizzocchi Luca , Prudenzano Domenico , Caselli Paola 
Published: October 2020

AbstractThe laboratories at the Centre for Astrochemical Studies at the Max Planck Institute for Extraterrestrial Physics are devoted to spectroscopic studies of molecules of astrophysical relevance. In particular, in this paper we report on the two experiments that can produce and probe unstable molecules, like radicals and ions.
The latest spectral analysis on asteroids at NAO Rozhen
Authors: Bebekovska Elena Vchkova , Borisov Galin , Donchev Zahary , Apostolovska Gordana 
Published: October 2020

AbstractBy virtue of the physical, chemical and dynamical characteristics of asteroids, researchers gain insight into the formation and evolution of our Solar system. Since these objects do not undergo any changes, or the changes during the Solar system evolution are insignificant, we are certain they carry important information regarding the formation of our planetary system and its evolution. Knowing the spectral class of an asteroid is crucial for determining its chemical properties. In our work the spectral classification was done on several asteroids by comparing their spectra with laboratory spectra. We determined spectral types of the asteroids by the overall shapes of the spectra between 450 nm and 700 nm. Increasing the number of asteroids with known rotation period, shapes and spectra enriches the asteroid database of physical and dynamical characteristics of asteroid population.
The importance of being stable: New results about the survival of PAHs in extreme astrophysical environments
Authors: Micelotta Elisabetta R. 
Published: October 2020

AbstractIncreasing observational evidence shows that a non-negligible fraction of the cosmic carbon is locked into macromolecules like Polycyclic Aromatic Hydrocarbons (PAHs). Interstellar PAHs live in extreme environments where there are processed by energetic photons (UV and X-rays) and by ions and electrons accelerated in hot shocked plasma and arising from cosmic rays. It is therefore important to quantify the capability of PAHs to survive under these extreme conditions and to determine the structural modifications induced by such energetic processing. I will present some novel results on this topic, focusing on the bombardment by ions and electrons in interstellar shocks. This work shows the importance of pairing an appropriate physical description of the interaction between target and projectiles with updated laboratory measurements of the relevant physical parameters. The results from physical modeling allowed to derive updated astronomical lifetimes for PAHs.
Citation of evolving data in distributed asynchronous infrastructures
Authors: Zwölf C. M. , Moreau N. , Ba Y. A. , Dubernet M. L. 
Published: October 2020

AbstractThe VAMDC Consortium intended to find a way for users to cite the datasets accessed through the infrastructure. The Research Data Alliance Data citation working group provided the researchers and data centres communities with a recommendation to identify and cite dynamic data. This recommendation perfectly matched the VAMDC needs: the proposed solution relies on a query centric view and the set-up of a Query Store. Data should be stored in a versioned time-stamped manner and accessed through queries. The Query Store we implemented for VAMDC is interlinked with Zenodo. Since Zenodo is indexed in OpenAIRE and since the latter implements Scholix, VAMDC indirectly implements Scholix via its Query Store. The paper outlines the successes and limitations of the above approach.
New laboratory techniques using heterodyne receivers
Authors: Wehres Nadine , Borisov Kirill , von Schoeler Katharina , Pütz Patrick , Honingh Cornelia , Lewen Frank , Schlemmer Stephan 
Published: October 2020

AbstractTwo laboratory emission spectrometers have been designed and described previously. Here, we present a follow-up study with special focus on absolute intensity calibration of the new SURFER-spectrometer (SUbmillimeter Receiver For Emission spectroscopy of Rotational transitions), operational between 300 and 400 GHz and coincident with ALMA (Atacama Large Millimeter/submillimeter Array) Band 7.Furthermore, we present a feasibility study to extend the detection frequencies up to 2 THz. First results have been obtained using the SOFIA (Stratospheric Observatory for IR Astronomy) upGREAT laboratory setup which is located at the University of Cologne. Pure rotational spectra of the complex molecule vinyl cyanide have been obtained and are used to give an estimate on the sensitivity to record ro-vibrational transitions of molecules with astrophysical importance at 2 THz.
Supernova abundance analysis with NLTE spectral models
Authors: Jerkstrand A. 
Published: October 2020

AbstractSupernovae provide environments with strong links to laboratory astrophysics. Diverse physical processes spanning from hot gas and semi-relativistic particles down to cold dusty clumps require extensive atomic data and understanding of processes across different physical regimes. The current status of modelling and analyzing supernova spectra is reviewed, with focus on recent results for diagnosing the production of oxygen and nickel.
Carbonaceous chondrite meteorites as a record of protoplanetary disk conditions
Authors: Russell Sara S. , Bonato Enrica , Bates Helena , King Ashley J. , Almeida Natasha V. , Schofield Paul F. 
Published: October 2020

AbstractChondritic meteorites, and especially the most volatile-rich chondrites, the carbonaceous chondrites, preserve a record of the solar protoplanetary disk dust component and how it has been changed both in the disk environment itself and in its asteroidal parent body. Here we review some of the key features of carbonaceous chondrites and report some new data on their organics component. These show that the nebula reached temperature of >10000C, but only very locally, to produce chondrules. Most meteoritic material underwent thermal and/or aqueous processing, but some retain delicate nebular components such as complex organic molecules and amorphous silicates.
Gas-phase reactivity of CH3C(O) CH3 with OH radicals at interstellar Temperatures (T = 11.7 – 64.4 K) using the CRESU technique
Authors: Blázquez Sergio , Ocaña Antonio J. , García Alberto , Ballesteros Bernabé , Canosa André , Antiñolo María , Albaladejo José , Jiménez Elena 
Published: October 2020

AbstractThe rate coefficients, k(T= 11.7 – 64.4 K), for the gas-phase reaction between OH radicals and acetone, CH3C(O) CH3, have been measured using the pulsed CRESU (French acronym for Reaction Kinetics in a Uniform Supersonic Flow) technique, the most suitable one to cool down gases below the freezing point without gas condensation. The experimental k(T) was found to increase as temperature was lowered and is several orders of magnitude higher for low temperature than k(300 K). No pressure dependence of k(20 K) and k(64 K) was observed, while k(50 K) at the largest gas density is twice higher than the average values found at lower gas densities. The obtained values of k(11.7 K) and k(21.1 K) were 2.45’10-10 and 1.39’10-10 cm3 molecule-1 s-1, respectively.
The vibrational signatures of polyaromatic hydrocarbons on an ice surface
Authors: Clark Victoria H.J. , Benoit David M. 
Published: October 2020

AbstractWe use quantum chemical techniques to model the vibrational spectra of small aromatic molecules on a proton-ordered hexagonal crystalline water ice (XIh) model. We achieve a good agreement with experimental data by accounting for vibrational anharmonicity and correcting the potential energy landscape for known failures of density functional theory. A standard harmonic description of the vibrational spectra only leads to a broad qualitative agreement.
Towards disentangling photodesorption and photodissociation in astronomical ice analogues
Authors: Bulak Michał , Paardekooper Daniel , Bouwman Jordy , Fedoseev Gleb , Linnartz Harold 
Published: October 2020

AbstractUV irradiation of ices plays an important role in different inter- and circumstellar environments. Following the absorption of UV photons in ice, two processes compete: photodesorption and photodissociation/chemistry. From an experimental point of view it is very hard to discriminate between photodesorption and photodissociation (and resulting photochemistry). In this work we present our first attempts to distinguish both effects. The performance is demonstrated on the example of CO-ice, known not to dissociate upon UV irradiation, and CH4-ice that does fragment.
Laboratory simulation of light scattering from regolith analogue: Effect of porosity and particle size
Authors: Kar Amritaksha , Sen Asoke K 
Published: October 2020

AbstractThe surfaces of most of the atmosphereless solar system bodies are referred to as regolith or layers of usually loosely connected fragmentary debris, produced by meteorite impacts. Measurement of light scattered from such surfaces provide information about the composition and structure of the surface. In the present work, the effect of porosity and particle size, on reflectance is studied for regolith like samples. For modelling the experimental data Hapke 2008 is used and found to be in good agreement with laboratory data. From the present study, it can be concluded that the physical properties of a regolith, such as porosity, particle size etc are effectively represented by albedo.
Use, and perceived usefulness, of cognitive behavioural therapy techniques for self-care among therapists
Authors: Andersson Gerhard , Björklind Andreas , Bennett-Levy James , Bohman Benjamin 
Published: October 2020

Abstract
Mental health problems are prevalent among therapists and may have a negative impact on therapist effectiveness. To counteract such problems, therapist self-care (for example, striking a balance between personal and professional demands and seeking personal therapy), has received increased attention. Conceptually, self-care can be considered as part of a personal practice model, focusing on techniques that therapists engage with self-experientially with a focus on their personal and/or professional development. However, studies of the self-application of specific treatment techniques are lacking. We aimed to explore the use, and perceived usefulness, of cognitive behavioural therapy (CBT) techniques for self-care to prevent or treat own mental health problems among practising therapists. Participants were therapists (n = 228) of various professional backgrounds in Sweden. Data were collected using a web-based survey. Descriptive statistics were calculated, and non-parametric analyses conducted to investigate associations of 13 CBT techniques with therapist characteristics. Use of CBT techniques for self-care was highly prevalent among participants, and they perceived the techniques as useful, irrespective of characteristics such as gender, age, profession, years since graduation, clinical experience, level of training in CBT, and previous experience of personal CBT. The high prevalence among therapists of the use of treatment techniques for self-care is very encouraging. Therapist self-care, including the self-application of treatment techniques, may be an important factor for therapist effectiveness, which calls for further development of personal practice models with respect to self-care, and future studies investigating associations between therapist mental health, self-care, effectiveness and patient outcome.

Key learning aims

(1)
Therapist self-care using cognitive behavioural therapy (CBT) techniques to prevent or treat own mental health problems may influence therapist effectiveness. However, studies of self-application of treatment techniques are lacking.

(2)
In the present survey study, the use of CBT techniques for self-care was highly prevalent among practising therapists, and they perceived the techniques as useful, irrespective of characteristics such as gender, age, profession, years since graduation, clinical experience, level of training in CBT, and previous experience of personal CBT.

(3)
Almost all therapists believed that it was a good idea to self-apply CBT techniques for their own sake and for the benefit of their patients.
From Physics to Climate Science
Authors: North Gerald R. 
Published: October 2020

AbstractI began my career in climate science in 1974 when I went on Sabbatical from a tenured position in a physics department to National Center for Atmospheric Research (NCAR). I began working on simple climate models that year, and it led a few years later to a senior scientist position at NASA Goddard Space Flight Center (1978–1986). During this time, colleagues and I continued working on simple models expanding them to two horizontal dimensions and with many applications in paleoclimatology. When the models were forced by white noise the response was remarkably close to those of general circulation models. My group did numerous studies on the sampling errors in estimating empirical orthogonal functions and in the identification, evaluation, and estimation of errors for satellite retrieval of rain. I was the first study scientist for the Tropical Rainfall Measuring Mission. I moved to Texas A&M University in 1986 and served as department head from 1995–2003. At A&M I continued working on statistical problems related to Tropical Rain Measuring Mission (TRMM) and other applications such as detection of climate signals. I served in many service roles such as on boards, award committees, and as editor‐in‐chief for a journal and an encyclopedia. I also wrote, coauthored, or edited books on paleoclimatology, thermodynamics, climate models, and memoirs. I became Distinguished Professor Emeritus in 2014 and Research Professor until 2020, when I left the payroll.
The Role of Premagmatic Rifting in Shaping a Volcanic Continental Margin: An Example From the Eastern North American Margin
Authors: Lang G. , ten Brink U. S. , Hutchinson D. R. , Mountain G. S. , Schattner U. 
Published: October 2020

AbstractBoth magmatic and tectonic processes contribute to the formation of volcanic continental margins. Such margins are thought to undergo extension across a narrow zone of lithospheric thinning (~100 km). New observations based on existing and reprocessed data from the Eastern North American Margin contradict this hypothesis. With ~64,000 km of 2‐D seismic data tied to 40 wells combined with published refraction, deep reflection, receiver function, and onshore drilling efforts, we quantified along‐strike variations in the distribution of rift structures, magmatism, crustal thickness, and early post‐rift sedimentation under the shelf of Baltimore Canyon Trough (BCT), Long Island Platform, and Georges Bank Basin (GBB). Results indicate that BCT is narrow (80–120 km) with a sharp basement hinge and few rift basins. The seaward dipping reflectors (SDR) there extend ~50 km seaward of the hinge line. In contrast, the GBB is wide (~200 km), has many syn‐rift structures, and the SDR there extend~200 km seaward of the hinge line. Early post‐rift depocenters at the GBB coincide with thinner crust suggesting “uniform” thinning of the entire lithosphere. Models for the formation of volcanic margins do not explain the wide structure of the GBB. We argue that crustal thinning of the BCT was closely associated with late syn‐rift magmatism, whereas the broad thinning of the GBB segment predated magmatism. Correlation of these variations to crustal terranes of different compositions suggests that the inherited rheology determined the premagmatic response of the lithosphere to extension.