bluuebunny/crossref_metadata_2025_split huggingface dataset:
Complexes of 3d Metals with a Bulky Carbazolyl Ligand
Authors: Kaiser Michelle , Winkler Lucas , Hinz Alexander 
Published: June 2022

AbstractIn this contribution, the synthesis and properties of nine novel 3d metal complexes are reported. As supporting ligand scaffold, the bulky 1,8‐bis(3,5‐ditertbutylphenyl)‐3,6‐ditertbutylcarbazole (R) was employed. After deprotonation and salt metathesis reactions, a series of four complexes, the dimeric [RMn(THF)(μ‐Cl)]2 (1 a), [RFe(THF)(μ‐Cl)]2 (2 a), and [RCo(THF)(μ‐Cl)]2 (3 a) as well as a monomeric [RCr(THF)2(Cl)] (4 a), were obtained, while the analogous Ni(II) complex remained elusive. However, incorporation of PMe3 as stronger donor molecule in comparison sufficed to stabilise also the Ni(II) complex [RNi(PMe3)2(Cl)] (5 b). The series was completed by treatment of 1 a–4 a with PMe3, which afforded the related phosphine complexes 1 b–4 b. All complexes were characterised in the solid state by single crystal structure elucidation and their magnetic moments in solution were determined by NMR experiments with the Evans method.
BF4− as source for the preparation of BF2 bridged copper(II) dimethylglyoxime complexes
Authors: Petrikat Raphael I. , Becker Sabine 
Published: June 2022

AbstractThe reaction of copper(II) tetrafluoroborate with dimethylglyoxime (H2dmg) leads to the formation of the dinuclear complexes [Cu2(dmg)(Hdmg)(EtOH)(H2dmg)]BF4 (1) and [Cu2(dmg ⋅ BF2)(Hdmg)(H2dmg)]BF4 (2). In 2, BF2 deriving from BF4− has been inserted into the oxime groups to form an O,O‐bidentate difluoroboron complex. Co‐crystallization of 1 and 2 impeded a thorough characterization of 2. In further attempts to prepare pure 2, the difluoroboron complexes [Cu(dmg ⋅ BF2)2(MeCN)] (3) and [Cu(dmg ⋅ BF2)(Hdmg)] (4) have been obtained. Attempts to isolate the BF2‐bridged ligand failed. Even though BF4− readily is decomposed to formally form BF2+ that is inserted into the resulting complexes and F−, the nascent F− ions are not a suitable F− source for organic fluorination reactions. Nevertheless, the described, facile route to prepare O,O‐bidentate difluoroboron complexes without the usage of the highly toxic BF3 ⋅ OEt2 but BF4− instead is of interest for synthetically working chemists.
Chaotic dynamics and subharmonic bifurcations of current‐carrying conductors subjected to harmonic excitation
Authors: Zhou Liangqiang , Hu Sengen , Chen Fangqi 
Published: June 2022

AbstractWith both analytical and numerical methods, global dynamics including chaotic motions and subharmonic bifurcations of current‐carrying conductors subjected to harmonic excitation are investigated in this paper. The system parameter conditions for chaos are obtained with the Melnikov method. The monotonicity of the critical value for chaos on the damping, alternating current, and excitation amplitude is studied in detail for three cases. Some interesting dynamic phenomena such as “uncontrollable frequency interval” and “controllable frequency” are presented analytically. Subharmonic bifurcations of odd order or even order are also investigated with the subharmonic Melnikov method. The evolution of subharmonic bifurcation to chaos is studied. It is proved rigorously that the system may undergo chaotic motions through finite or infinite subharmonic bifurcations. Numerical simulations are given to verify the chaos threshold obtained with the analytical method.
One-loop QCD helicity amplitudes for pp → $$ t\overline{t}j $$ to O(ε2)
Authors: Badger Simon , Becchetti Matteo , Chaubey Ekta , Marzucca Robin , Sarandrea Francesco 
Published: June 2022

Abstract
We compute helicity amplitudes for the one-loop QCD corrections to top-quark pair production analytically in terms of a set of uniformly transcendental master integrals. We provide corrections up to O(ε2) in the dimensional regulator for the first time which are relevant at NNLO. Four independent pentagon integral topologies appear in the complete description of the colour structure for which we provide numerical solutions using canonical form differential equations and the method of generalised power series expansions. Analytic forms of the boundary values are obtained in all cases except one where we find a one-dimensional integral representation.
Hypercontractivity and Logarithmic Sobolev Inequality for Non-primitive Quantum Markov Semigroups and Estimation of Decoherence Rates
Authors: Bardet Ivan , Rouzé Cambyse 
Published: June 2022

AbstractWe generalize the concepts of weak quantum logarithmic Sobolev inequality (LSI) and weak hypercontractivity (HC), introduced in the quantum setting by Olkiewicz and Zegarlinski, to the case of non-primitive quantum Markov semigroups (QMS). The originality of this work resides in that this new notion of hypercontractivity is given in terms of the so-called amalgamated$$\mathbb {L}_p$$

L
p

norms introduced recently by Junge and Parcet in the context of operator spaces theory. We make three main contributions. The first one is a version of Gross’ integration lemma: we prove that (weak) HC implies (weak) LSI. Surprisingly, the converse implication differs from the primitive case as we show that LSI implies HC but with a weak constant equal to the cardinal of the center of the decoherence-free algebra. Building on the first implication, our second contribution is the fact that strong LSI and therefore strong HC do not hold for non-trivially primitive QMS. This implies that the amalgamated $$\mathbb {L}_p$$

L
p

norms are not uniformly convex for $$1\le p \le 2$$

1
≤
p
≤
2

. As a third contribution, we derive universal bounds on the (weak) logarithmic Sobolev constants for a QMS on a finite dimensional Hilbert space, using a similar method as Diaconis and Saloff-Coste in the case of classical primitive Markov chains, and Temme, Pastawski and Kastoryano in the case of primitive QMS. This leads to new bounds on the decoherence rates of decohering QMS. Additionally, we apply our results to the study of the tensorization of HC in non-commutative spaces in terms of the completely bounded norms (CB norms) recently introduced by Beigi and King for unital and trace preserving QMS. We generalize their results to the case of a general primitive QMS and provide estimates on the (weak) constants.
Equal receipt of specialized palliative care in breast and prostate cancer: a register study
Authors: Bergqvist Jenny , Hedman Christel , Schultz Torbjörn , Strang Peter 
Published: June 2022

Abstract
Purpose
There are inequalities in cancer treatment. This study aimed to investigate whether receipt of specialized palliative care (SPC) is affected by typical female and male diagnoses (breast and prostate cancer), age, socioeconomic status (SES), comorbidities as measured by the Charlson Comorbidity Index (CCI), or living arrangements (home vs nursing home residence). Furthermore, we wanted to investigate if receipt of SPC affects the place of death, or correlated with emergency department visits, or hospital admissions.

Methods
All breast and prostate cancer patients who died with verified distant metastases during 2015–2019 in the Stockholm Region were included (n = 2516). We used univariable and stepwise (forward) logistic multiple regression models.

Results
Lower age, lower CCI score, and higher SES significantly predicted receipt of palliative care 3 months before death (p = .007–p < .0001). Patients with prostate cancer, a lower CCI score, receiving palliative care services, or living in a nursing home were admitted to a hospital or visited an emergency room less often during their last month of life (p = .01 to < .0001). Patients receiving palliative care services had a low likelihood of dying in an acute care hospital (p < .001). Those who died in a hospital were younger, had a lower CCI score, and had received less palliative care or nursing home services (p = .02– < .0001).

Conclusion
Age, comorbidities, and nursing home residence affected the likelihood of receiving SPC. However, the diagnosis of breast versus prostate cancer did not. Emergency room visits, hospital admissions, and hospital deaths are registered less often for patients with SPC.
Exponential ReLU Neural Network Approximation Rates for Point and Edge Singularities
Authors: Marcati Carlo , Opschoor Joost A. A. , Petersen Philipp C. , Schwab Christoph 
Published: June 2022

AbstractIn certain polytopal domains $$\varOmega $$
Ω
, in space dimension $$d=2,3$$

d
=
2
,
3

, we prove exponential expressivity with stable ReLU Neural Networks (ReLU NNs) in $$H^1(\varOmega )$$

H
1

(
Ω
)

for weighted analytic function classes. These classes comprise in particular solution sets of source and eigenvalue problems for elliptic PDEs with analytic data. Functions in these classes are locally analytic on open subdomains $$D\subset \varOmega $$

D
⊂
Ω

, but may exhibit isolated point singularities in the interior of $$\varOmega $$
Ω
or corner and edge singularities at the boundary $$\partial \varOmega $$

∂
Ω

. The exponential approximation rates are shown to hold in space dimension $$d = 2$$

d
=
2

on Lipschitz polygons with straight sides, and in space dimension $$d=3$$

d
=
3

on Fichera-type polyhedral domains with plane faces. The constructive proofs indicate that NN depth and size increase poly-logarithmically with respect to the target NN approximation accuracy $$\varepsilon >0$$

ε
>
0

in $$H^1(\varOmega )$$

H
1

(
Ω
)

. The results cover solution sets of linear, second-order elliptic PDEs with analytic data and certain nonlinear elliptic eigenvalue problems with analytic nonlinearities and singular, weighted analytic potentials as arise in electron structure models. Here, the functions correspond to electron densities that exhibit isolated point singularities at the nuclei.
Anthropogenic deforestation and climate dryness as drivers of demographic decline and genetic erosion in the southernmost European fir forests
Authors: Sánchez-Robles José Manuel , García-Castaño Juan Luis , Balao Francisco , García Cristina , Terrab Anass , Talavera Salvador 
Published: June 2022

AbstractA better understanding of long-term effects of climate and historical anthropogenic changes is needed to define effective conservation measures of endangered forest inhabiting managed landscapes. Diversification and distribution of Mediterranean firs are attributed to the global climate change during the Miocene and Quaternary as well as to the effects of human-driven deforestation. We evaluated the impact of climate change and anthropogenic activities in shaping the genetic diversity and structure of Abies pinsapo Boiss. (Pinaceae), a relict fir endemic from SW Spain. We genotyped a total of 440 individuals from 44 populations by using two different molecular markers (cpSSRs and nSSRs). Overall, low genetic structure was found; however, incipient differentiation appeared within mountain ranges. Analyses suggest that the effects of isolation by distance and lithological or topographical diversity were not enough to structure the populations of the different mountain ranges. The combined role of genetic drift in the small populations and the anthropogenic action associated with forest management has shaped the current genetic pattern of this fir species in the study area. Demographic inference analyses pointed to a very recent synchronic divergence (eleventh–sixteenth century) of the ancestral A. pinsapo population into its current scattered distribution range. Although population bottlenecks were supported by several analyses, the conservation of this endangered species seems not to be limited by lacking genetic diversity, while threats of current climate change and habitat loss must be regarded.
Improvement of Force History Pattern in Composite Tubular Structures by Developed Trigger Mechanisms
Authors: de la Cuesta J. J. , Ghasemnejad H. 
Published: June 2022

AbstractThis paper investigates the effect of various trigger mechanisms on the force history pattern, initial collapse load, mean force and specific energy absorption of CFRP composite tubular absorbers. These trigger mechanisms are bevel with angles of 15°, 30°, 45° and 60° and tulip with angles of 60° and 90° and tip numbers of 4 and 6. Experimental studies were performed for three trigger mechanisms of Bevel (B30° and B60°) and tulip with four tips and angle of 60°, 4T60. It was shown that tulip mechanisms significantly change the force–displacement pattern in comparison with bevel triggers. In this case, the initial collapse load decreases, which leads to improving the crush force efficiency (CFE) and progressive energy absorption. This analysis also contains numerical modelling, which investigates other designs of bevel and tulip trigger mechanisms with different angles. Finally, numerical results are validated against experimental results using advanced finite element techniques in LS-Dyna. The developed tulip trigger mechanisms indicated a significant change of crushing force history, which results in improvement of crashworthiness parameters.
WHO Participates in Effectiveness Research? A Comparison of Effectiveness Trial Clinicians to National Survey Samples
Authors: Patel Zabin S. , Philips Dominique , Casline Elizabeth , Aarons Gregory A. , Maxwell Colleen A. , Ginsburg Golda S. , Ehrenreich-May Jill , Jensen-Doss Amanda 
Published: June 2022

AbstractFindings from research participants in effectiveness treatment trials (i.e., randomized control trials conducted in community rather than research settings) are considered more generalizable than those from participants in efficacy trials. This is especially true for clinician participants, whose characteristics like attitudes towards evidence-based practices (EBPs) may impact treatment implementation and the generalizability of research findings from effectiveness studies. This study compared background characteristics, attitudes toward EBPs, and attitudes towards measurement-based care (MBC) among clinicians participating in a National Institute of Mental-Health (NIMH) funded effectiveness trial, the Community Study of Outcome Monitoring for Emotional Disorders in Teens (COMET), to clinician data from nationally representative U.S. survey samples. Results indicated COMET clinicians were significantly younger, less clinically experienced, and were more likely to have a training background in psychology versus other disciplines compared to national survey samples. After controlling for demographics and professional characteristics, COMET clinicians held more positive attitudes towards EBPs and MBC compared to national survey samples. Implications for implementation efforts are discussed.
Simulation of soil liquefaction distribution in downtown Mashiki during 2016 Kumamoto earthquake using nonlinear site response
Authors: Sun Jikai , Kawase Hiroshi , Fukutake Kiyoshi , Nagashima Fumiaki , Matsushima Shinichi 
Published: June 2022

AbstractSeveral sites located between Road No.28 and Akitsu River in downtown Mashiki were liquefied during the mainshock of the 2016 Kumamoto earthquake. According to the building damage survey results, only a few buildings were damaged in areas proximate to the Akitsu River, where liquefaction occurred, however, serious building damage occurred in neighboring regions. Therefore, the effect of soil liquefaction on strong ground motions in Mashiki should be ascertained. Moreover, the distribution of visible and invisible liquefaction is required to be estimated as well. In this study, the distribution of depth of groundwater level in Mashiki was studied, which decreased from 14 to 0 m from northeast to southwest. Thereafter, the nonlinearities of the shallow layers at four borehole drilling sites were identified from the experimental data using the Ramberg–Osgood relationship. Subsequently, the dynamic nonlinear effective stress analysis of the one-dimensional soil column was performed to 592 sites in Mashiki between the seismological bedrock and ground surface to estimate the distribution of strong ground motions during the mainshock. First, the ground motions estimated by the nonlinear analysis corresponded to the ground motions observed at the Kik-net KMMH16. Second, the soil nonlinearity of shallow layers was considerably strong in the entire target area especially in the southern Mashiki, and the PGV distribution was similar to the building damage distribution after the mainshock. Furthermore, the estimated distribution of the soil liquefaction site was similar to the observed results, whereas certain invisible-liquefaction sites were estimated in the north and middle of the target area.
Rivaroxaban After Transcatheter Aortic Valve Replacement: A Critical Appraisal of the GALILEO Trial
Authors: Sulzgruber Patrick , Hammer Andreas , Niessner Alexander 
Published: June 2022

Abstract
Purpose
The anti-thrombotic approach in individuals undergoing transcatheter aortic valve replacement (TAVR) mirrors a controversial field in clinical practice.

Methods/Results
The aim of this article was to critically appraise the randomized controlled GALILEO trial, where two different antithrombotic regimes (10 mg rivaroxaban + 3 months aspirin vs. aspirin + 3 months clopidogrel) were compared in patients who underwent TAVR as well as available evidence in literature in this field.

Conclusion
The GALILEO trial was prematurely terminated as a consequence of increased risk of both death or thromboembolic complications and a higher risk of bleeding in the anticoagulation arm, compared to the antiplatelet-based strategy.
Various concerns have been raised that the negative results of the GALILEO trial need to be regarded with caution. A routine use of oral anticoagulation (OAC) for the prevention of atherothrombotic events and valve thrombosis after TAVR in individuals who do not have an indication for oral anticoagulation, can currently not be recommended when considering the evidence base of available literature. However, the negative results of the GALILEO trial need to be interpreted with caution – especially in terms of dose of rivaroxaban – and should not discourage from performing further trials investigating safety and efficacy of this therapeutic approach. Additionally, further dose-finding trials for rivaroxaban should be considered.
Fighting Food Waste by Law: Making Sense of the Chinese Approach
Authors: Feng Y. , Marek C. , Tosun J. 
Published: June 2022

AbstractThe Standing Committee of the National People’s Congress adopted the Anti-food Waste Law of the People’s Republic of China in April 2021 to guarantee grain security, conserve resources, and protect the environment. We pursue three research questions: Why has China implemented a law with sanctions to reduce food waste, and why now? Why does the law target the catering industry? To answer these questions, we collected primary data through semi-structured interviews with government officials, as well as secondary data through recorded interviews available online with officials of the Legislative Affairs Commission of the Standing Committee of the National People’s Congress (NPCSC) and food waste activists, as well as NPCSC conference reports. We find a legal approach with sanctions was necessary since cultural aspects, specifically conventional Chinese dining habits and pop culture, are difficult to regulate through instruments without sanctions. In addition, we find the Chinese law focuses on the catering industry for a few reasons: (1) More waste is generated by the catering industry than households, (2) waste from the catering industry is easier to monitor than household waste, and (3) this was a response to citizen requests collected during the Anti-food Waste Law public consultation process.
Is Holland a Lumpy Country? An application of the Lens-Condition to Dutch Cities
Authors: Brakman Steven , Hendrich Tijl , van Marrewijk Charles , Olsen Jennifer 
Published: June 2022

AbstractTraditional trade theory assumes that countries are dimensionless points. Recent research, however, shows that the internal geography of countries is important for the trade structure of a country. One aspect of internal geography is the uneven spatial distribution of factors of production, which especially concentrate in urban locations. The so-called lens-condition (based on the Heckscher-Ohlin model) tests whether the (urban) distribution of factors of production is uneven enough to affect the national structure of trade and welfare. Our analysis, using firm export data and applying the condition to 22 cities and 4 regions within The Netherlands for 2007–2017, shows that the condition is fulfilled. We explain why.
Bicarbonate alone does not totally explain the toxicity from major ions of coal bed derived waters to freshwater invertebrates
Authors: Hills Kasey A. , Hyne Ross V. , Kefford Ben J. 
Published: June 2022

Abstract
Concentrations of major ions in coal mine discharge waters and unconventional hydrocarbon produced waters derived from coal bed methane (CBM) production, are potentially harmful to freshwater ecosystems. Bicarbonate is a major constituent of produced waters from CBM and coal mining. However, little is known about the relative toxicity of differing ionic proportions, especially bicarbonate, found in these CBM waters. As all freshwater invertebrates tested are more acutely sensitive to sodium bicarbonate (NaHCO3) than sodium chloride (NaCl) or synthetic sea water, we tested the hypotheses that toxicity of CBM waters are driven by bicarbonate concentration, and waters containing a higher proportion of bicarbonate are more toxic to freshwater invertebrates than those with less bicarbonate. We compared the acute (96 h) lethal toxicity to six freshwater invertebrate species of NaHCO3 and two synthetic CBM waters, with ionic proportions representative of water from CBM wells across New South Wales (NSW) and Queensland (Qld), in Australia. The ranking of LC50 values expressed as total salinity was consistent with the hypotheses. However, when toxicity was expressed as bicarbonate concentration, the hypothesis that the toxicity of coal bed waters would be explained by bicarbonate concentration was not well supported, and other ionic components were either ameliorating or exacerbating the NaHCO3 toxicity. Our findings showed NaHCO3 was more toxic than NaCl and that the NaHCO3 proportion of synthetic CBM waters drives toxicity, however other ions are altering the toxicity of bicarbonate.
Coming out in the university workplace: a case study of LGBTQ + staff visibility
Authors: Lee Catherine 
Published: June 2022

AbstractThis article explores the issue of workplace visibility and signs and symbols of LGBTQ + identity in a UK university. A poststructuralist Butlerian theoretical framework underpins this article. Sexual and gender identities are understood as multiple and fragmented, and constructed in relation to others and within the systems of power and knowledge that exist in universities and society more widely. An anonymous survey and focus group discussions were conducted with LGBTQ + staff in a higher education institution in England awarded university status in 1992. Results showed that staff felt relatively comfortable coming out to their peer-groups in the workplace but were less confident in coming out to students. Signs and symbols of LGBTQ + identities were fundamentally important to LGBTQ + staff members in helping them feel safe in the workplace and indicating to LGBTQ + students that they were potentially a source of support. The visibility of LGBTQ + senior leaders was important in empowering staff to believe that they too might progress within the university.