bluuebunny/crossref_metadata_2025_split huggingface dataset:
Chandra and Magellan/FIRE follow-up observations of PSO167–13: An X-ray weak QSO at z = 6.515
Authors: Vito F. , Brandt W. N. , Ricci F. , Congiu E. , Connor T. , Bañados E. , Bauer F. E. , Gilli R. , Luo B. , Mazzucchelli C. , Mignoli M. , Shemmer O. , Vignali C. , Calura F. , Comastri A. , Decarli R. , Gallerani S. , Nanni R. , Brusa M. , Cappelluti N. , Civano F. , Zamorani G. 
Published: March 2021

Context. The discovery of hundreds of quasi-stellar objects (QSOs) in the first gigayear of the Universe powered by already grown supermassive black holes (SMBHs) challenges our knowledge of SMBH formation. In particular, investigations of z > 6 QSOs that present notable properties can provide unique information on the physics of fast SMBH growth in the early Universe.
Aims. We present the results of follow-up observations of the z = 6.515 radio-quiet QSO PSO167–13, which is interacting with a close companion galaxy. The PSO167–13 system has recently been proposed to host the first heavily obscured X-ray source at high redshift. The goals of these new observations are to confirm the existence of the X-ray source and to investigate the rest-frame UV properties of the QSO.
Methods. We observed the PSO167–13 system with Chandra/ACIS-S (177 ks) and obtained new spectroscopic observations (7.2 h) with Magellan/FIRE.
Results. No significant X-ray emission is detected from the PSO167–13 system, suggesting that the obscured X-ray source previously tentatively detected was either due to a strong background fluctuation or is highly variable. The upper limit (90% confidence level) on the X-ray emission of PSO167–13 (L2−10 keV < 8.3 × 1043 erg s−1) is the lowest available for a z > 6 QSO. The ratio between the X-ray and UV luminosity of αox < −1.95 makes PSO167–13 a strong outlier from the αox − LUV and LX − Lbol relations. In particular, its X-ray emission is more than six times weaker than the expectation based on its UV luminosity. The new Magellan/FIRE spectrum of PSO167–13 is strongly affected by unfavorable sky conditions, but the tentatively detected C IV and Mg II emission lines appear strongly blueshifted.
Conclusions. The most plausible explanations for the X-ray weakness of PSO167–13 are intrinsic weakness or small-scale absorption by Compton-thick material. The possible strong blueshift of its emission lines hints at the presence of nuclear winds, which could be related to its X-ray weakness.
Leitlinien in der Praxis: Sedierung in der gastrointestinalen Endoskopie
Authors: Tonner Peter H. 
Published: March 2021

ZusammenfassungZiel der Leitlinie „Sedierung in der gastrointestinalen Endoskopie“ ist die Definition struktureller, gerätetechnischer und personeller Anforderungen, die zur Risikominimierung der Sedierung bei Endoskopien beitragen. Dieser Artikel kommentiert wesentliche Aspekte der Leitlinie – insbesondere unter anästhesiologischen Gesichtspunkten. Eine Überarbeitung der Leitlinie steht bevor, dementsprechend wird auch auf neuere Entwicklungen eingegangen.
Wie häufig werden Diagnosen aus dem Bereich der sexuellen Funktionsstörungen an deutschen Hochschulambulanzen für Psychotherapie an psychologischen Instituten vergeben?
Authors: Velten Julia , Pantazidis Pierre , Benecke Andrea , Bräscher Anne-Kathrin , Fehm Lydia , Fladung Anne-Katharina , Fydrich Thomas , Heider Jens , Hamm Alfons , In-Albon Tina , Lange Julia , Lincoln Tania , Lutz Wolfgang , Margraf Jürgen , Schlarb Angelika , Schöttke Henning , Trösken Anne , Weinmann-Lutz Birgit , Hoyer Jürgen 
Published: March 2021

ZusammenfassungEinleitung Sexuelle Funktionsstörungen gelten als häufig. Gleichzeitig fehlen epidemiologische Daten zur Behandlungsprävalenz sexueller Funktionsstörungen in der ambulanten Psychotherapie. Im Rahmen eines Projekts zur Koordination der Datenerhebung an den deutschen Hochschulambulanzen für Psychotherapie wird erstmals eine Schätzung für dieses Behandlungssegment möglich.Forschungsziele Das Ziel dieser Studie ist die Darstellung der festgestellten F52-Diagnosen an deutschen Hochschulambulanzen für Psychotherapie an psychologischen Instituten.Methoden 16 Hochschulambulanzen für Erwachsene übermittelten ausgewählte Daten zur Eingangsdiagnostik ihrer Patient_innen (N = 4 504; M Alter = 37.87; SD = 13.47; Altersbereich = 15 bis 86 Jahre; 65.3 % weiblich) aus dem Jahr 2016. In der hier vorgestellten Studie wird spezifisch die Häufigkeit der Vergabe von Diagnosen aus dem ICD-Kapitel F52 analysiert.Ergebnisse Insgesamt wurde in 32 Fällen (0.7 %) die Diagnose einer sexuellen Funktionsstörung vergeben, in acht Fällen (0.2 %) als Hauptdiagnose. In 31 Fällen (96.9 %) waren auch komorbide Störungen gegeben, hauptsächlich Angststörungen (34.4 %) und affektive Störungen (53.1 %). Unter den Hauptdiagnosen war der nichtorganische Vaginismus (n = 3) der häufigste Grund, eine psychotherapeutische Hochschulambulanz eines psychologischen Instituts aufzusuchen. Die Häufigkeit von F52-Diagnosen in den 16 Ambulanzen schwankte zwischen 0 % und 1.2 %, und acht der 16 Ambulanzen vergaben überhaupt keine F52-Diagnosen.Schlussfolgerung Die Werte in der vorliegenden Behandlungsstichprobe erscheinen vor dem Hintergrund der Prävalenzdaten aus Bevölkerungsstudien als auffällig niedrig. Hierfür können neben methodischen und studienspezifischen Gründen auch Aspekte der psychotherapeutischen Versorgung sowie Beurteilungsfehler bei der Diagnosevergabe verantwortlich sein.
Sexuelles und Nicht-Sexuelles
Authors: Berner Wolfgang 
Published: March 2021

ZusammenfassungDie Nützlichkeit von Binswangers „Sexualität per se und in actu“ sowie der Unterscheidung von Sexuellem und Nicht-Sexuellem für therapeutische Zwecke wird in diesem Kommentar bezweifelt. Entgegengehalten wird ein in der psychodynamischen Psychotherapie bewährtes Begriffsinventarium: Erregung und Hemmung, Lust und Unlust, Angst, Schuld, Wiederholung und Wiederholungszwang. Nicht vergessen werden sollte, dass wir es in der Psychotherapie mit Psychosexualität und nicht mit dem rein physiologisch definierten Begriff der Sexualität zu tun haben. Bei Nutzung dieser beobachtungsnahen und leicht handhabbaren Begriffe bleibt man dem Erleben der Patient_innen deutlich näher verbunden als mit den abstrakteren Einordnungen in Libido, Aggression oder gar Perversion oder die medizinischen Termini gesund und krank.
Sexualbezogene Online-Fortbildung für Fachkräfte: Twitter
Authors: Döring Nicola 
Published: March 2021

ZusammenfassungDer vorliegende Praxisbeitrag befasst sich mit sexualbezogenen Debatten und sexualpolitischem Aktivismus auf Twitter. Er greift dazu exemplarisch drei Themengebiete heraus, die auf Twitter stark präsent sind: Sexuelle Gewalt, Schwangerschaftsabbruch und Sexarbeit. Zudem werden Fachleute und Fachorganisationen vorgestellt, die sich an sexualbezogenen Debatten auf Twitter beteiligen.
Synthesis of Tetrasilatetrathia[8]circulenes through C–I and C–H Silylation
Authors: Miyake Yoshihiro , Akahori Shuhei , Fujihara Tetsuaki , Tsuji Yasushi , Shinokubo Hiroshi 
Published: March 2021

AbstractWe have succeeded in the synthesis of various tetrasilatetrathia[8]circulenes with alkyl and aryl groups on the silicon atoms. We also disclosed the effect of phosphine ligands on palladium-catalyzed silylation of tetraiodotetrathienylene and rhodium-catalyzed intramolecular silylation of tetrasilyltetrathienylenes. Experimental and theoretical analysis revealed the effect of the substituents on the silicon atoms on their electronic property.
The Role of Preschool Peers in Children's Language Development
Authors: Purtell Kelly M. , Ansari Arya , Yang Qingqing , Bartholomew Caroline P. 
Published: March 2021

AbstractAlmost 5 million children attend preschool in the United States each year. Recent attention has been paid to the ways in which preschool classrooms shape children's early language development. In this article, we discuss the importance of peers and classroom composition through the lens of age and socioeconomic status and the implications for children's early learning and development. We also discuss the direct and indirect mechanisms through which classroom peers may shape each other's language development. As part of this discussion, we focus on exposure to peer language and engagement with peers, along with teachers' classroom practices. We conclude by discussing the ways in which teachers can ensure that children in classrooms of different compositions reap the maximum benefit, along with implications for research, policy, and practice.
Enhancing Culturally and Linguistically Responsive Features of Individualized Education Programs (IEPs) for Speech-Language Pathologists (SLPs)
Authors: Tran Le M. , Lober Janet , Patton James R. 
Published: March 2021

AbstractIndividual education programs (IEPs) are the foundation for guiding speech-language pathologists (SLPs) to develop appropriate interventions for culturally and linguistically diverse (CLD) students who qualify for speech-language services under the Individuals with Disabilities Education Act. There is a growing number of CLD students with speech-language impairments who need special attention given to their culture and language. This article highlights key culturally and linguistically responsive features to aid SLPs in developing meaningful IEPs for this diverse group of students.
The Five W's Meet the Three R's: The Who, What, When, Where, and Why of Telepractice Service Delivery for School-Based Speech-Language Therapy Services
Authors: Grogan-Johnson Sue 
Published: March 2021

AbstractSchool-based speech-language pathologists (SLPs) are implementing telecommunication technologies for service provision. Telepractice is one among an array of service delivery models that can be successfully implemented in the public-school setting. While many school-based SLPs have been plunged into telepractice with the recent pandemic, this temporary shift to emergency instruction is not the same as fully implementing a telepractice service delivery model. SLPs who recognize the potential application of telecommunications would profit from additional training and experience to take advantage of the benefits of this service delivery model. The purpose of this article is to explore the concept of telepractice as a service delivery model, and to answer the who, what, when, where, and why questions of school-based telepractice. Telepractice is one of several service delivery models that school-based SLPs can confidently utilize to provide effective speech and language therapy services to school-age students.
Is Early Traumatic Facial Nerve Surgery a Priority during the COVID-19 Pandemic?
Authors: Faramarzi Mohammad , Faramarzi Ali , Hosseinialhashemi Milad 
Published: March 2021

AbstractAs otolaryngologists are exposed to high risk of coronavirus disease 2019 (COVID-19) infection, logic and evidence-based prioritization for surgeries is essential to reduce the risk of infection amongst healthcare workers. Several clinical guidelines and surgery prioritizing recommendations have been published during the COVID-19 pandemic. They recommended the surgery in the setting of immediate facial nerve paralysis within 72 hours after trauma, but none of the previous studies in the literature suggests that the optimal timing of operation should be less than 2 weeks from injury.
Concise Update on Genomics of COVID-19: Approach to Its latest Mutations, Escalated Contagiousness, and Vaccine Resistance
Authors: Khodavirdipour Amir , Jabbari Sarvin , Keramat Fariba , Alikhani Mohammad Y. 
Published: March 2021

AbstractThe novel coronavirus disease 2019 (COVID-19) that started to invade the world from the Chinese fish market, causes an acute respiratory distress syndrome. COVID-19 is a dreadful infectious disease that surfaced only less than 8 months ago and caused the deadly COVID-19 pandemic. In this new species with a positive, single-strand RNA genome and a huge size, from the proteomics point view, there are no changes in sequences of amino acids in NSP7, 13, matrix, or envelope or other proteins including 8b and p6 and excluding NSP2 and NSP3. P6 is a multifunctional golgi–endoplasmic reticulum membrane-associated protein. This complex has a key duty to increase the replication rate of the virus and also causes intrinsic immune system responses by suppressing the signal transducer and activator of transcription factor 1 (STAT 1) translocated to the nucleus. Palmitoylated proteins elevate hydrophobicity which helps in membrane connection. Inside the N-linked glycosylation, moieties oligosaccharide is adhering to Asn-X-Ser/Thr canonical sequence. This helps for exact enfolding and carrying viral proteins by industriously using host's chaperon proteins including calreticulin and calnexin. 2B proteins encourage the internalization of major histocompatibility complex, class-I (MHC-I) protein and meanwhile inhibit their transfer to the surface of the cell as a recognition side. The deubiquitination of severe acute respiratory syndrome-coronavirus-2 (SARS-CoV-2) has precise modification apparatus in the posttranslational stage. In this article, we outlined the recent and up-to-date data on genomic and molecular structures, epidemiology, vaccine development, and, last but not least, the clinical features, diagnostics, and treatment of the novel coronavirus.
Single Incision, Dual Window Approach for a Comminuted Distal Radius Fracture
Authors: Gianakos Arianna , Patel Priya , Athens Christian M. , Capo John T. 
Published: March 2021

Abstract
Introduction Complex distal radius fractures often involve a fragment of the volar-ulnar articular surface and the radial styloid. The volar ulnar corner of the distal radius is an important constraint to volar translation of the carpus and thus requires stable fixation to prevent wrist displacement. The traditional volar Henry approach often requires undue tension on the median nerve while retracting for access to the ulnar aspect of the radius. To protect the median nerve from iatrogenic injury and to improve exposure of the surgical site, we propose a single incision, dual window approach to the distal radius for complex bi-columnar fractures.
Methods This technique combines the trans-Flexor Carpi Radialis (FCR) approach with a subcutaneous dissection to the ulnar aspect of the wrist. This window utilizes the interval between the ulnar neurovascular bundle and the carpal tunnel contents.
Results This technique allows the surgeon to work through either window and thus visualize and directly fixate the various fracture fragments. We have treated complex articular distal radius fractures associated with ulnar communition with this novel technique and it has provided direct reduction with improved fragment access. The surgical technique, a case presentation and results are detailed in this report.
Conclusion This case report has demonstrated that complex bi-columnar fractures of the distal radius can be effectively approached and fixated with a single incision dual window approach.
Lymphangiography and Lymphatic Interventions
Authors: Yadav Ajit , Jain Yajush , Narkhede Amey , KM Mahendra , Gupta Arun 
Published: March 2021

AbstractCompared with the traditional pedal lymphangiography, intranodal lymphangiography and MR lymphangiography have made imaging of the lymphatic system less challenging. Improvements in imaging and availability of newer catheters have allowed embolization of lymphatic system much more feasible that previously envisioned. In this article, we briefly review the anatomy, imaging, and current and future of lymphatic interventions.
Local criteria for the unit equation and the asymptotic Fermat’s Last Theorem
Authors: Freitas Nuno , Kraus Alain , Siksek Samir 
Published: March 2021

SignificanceIn the nineteenth and twentieth centuries, number theorists have intermittently attacked the Fermat equation over number fields, seeking extensions to Kummer’s approach. Nowadays, it is usual to follow in the footsteps of Frey, Serre, Ribet, and Wiles, whose efforts culminated in Wiles’ proof of Fermat’s Last Theorem. Until now, theorems giving a version of Fermat’s Last Theorem over a family of number fields have been marred by a restriction on the class group or the Galois group. In this paper, we prove the asymptotic Fermat’s Last Theorem for some number fields of odd degree, where the restrictions are much milder and local in nature.
The emancipation of gestures
Authors: Streeck Jürgen 
Published: March 2021

Abstract
Interactional linguists are interested in ways in which communicative resources emerge from interactional
practice. This paper defines a place for the study of gesture within interactional linguistics, conceived as ‘linguistics of time’
(Hopper, 2015). It shows how hand gestures of a certain kind – conceptual
gestures – emerge from ‘hands-on’ instrumental actions, are repeated and habitualized, and are taken to other communicative
contexts where they enable displaced reference and conceptual representation of experiences.
The data for this study is a video-recording of one work-day of an auto-shop owner (Streeck, 2017). The corpus includes auto-repair sequences in which he spontaneously improvises new
gestures in response to situated communication needs, and subsequent narrative sequences during which he re-enacts them as he
explains his prior actions. He also makes numerous ‘pre-fabricated’ gestures, gestures that circulate in the society at large and
that are acquired by copying other conversationalists. They are ready-made manual concepts. The paper explains the life-cycle of
conceptual gestures from spontaneous invention to social sedimentation and thereby sheds light on the ongoing emergence of
symbolic forms in corporeal practice and intercorporeal communication.
Knotting behaviour of polymer chains in the melt state for soft-core models with and without slip-springs
Authors: Wu Zhenghao , Alberti Simon A N , Schneider Jurek , Müller-Plathe Florian 
Published: March 2021

Abstract
We analyse the knotting behaviour of linear polymer melts in two types of soft-core models, namely dissipative-particle dynamics and hybrid-particle-field models, as well as their variants with slip-springs which are added to recover entangled polymer dynamics. The probability to form knots is found drastically higher in the hybrid-particle-field model compared to its parent hard-core molecular dynamics model. By comparing the knottedness in dissipative-particle dynamics and hybrid-particle-field models with and without slip-springs, we find the impact of slip-springs on the knotting properties to be negligible. As a dynamic property, we measure the characteristic time of knot formation and destruction, and find it to be (i) of the same order as single-monomer motion and (ii) independent of the chain length in all soft-core models. Knots are therefore formed and destroyed predominantly by the unphysical chain crossing. This work demonstrates that the addition of slip-springs does not alter the knotting behaviour, and it provides a general understanding of knotted structures in these two soft-core models of polymer melts.
Microheater-integrated zinc oxide nanowire microfluidic device for hybridization-based detection of target single-stranded DNA
Authors: Takahashi Hiromi , Yasui Takao , Kashida Hiromu , Makino Koki , Shinjo Keiko , Liu Quanli , Shimada Taisuke , Rahong Sakon , Kaji Noritada , Asanuma Hiroyuki , Baba Yoshinobu 
Published: March 2021

Abstract
Detection of cell-free DNA (cfDNA) has an impact on DNA analysis in liquid biopsies. However, current strategies to detect cfDNA have limitations that should be overcome, such as having low sensitivity and requiring much time and a specialized instrument. Thus, non-invasive and rapid detection tools are needed for disease prevention and early-stage treatment. Here we developed a device having a microheater integrated with zinc oxide nanowires (microheater-ZnO-NWs) to detect target single-stranded DNAs (ssDNAs) based on DNA probe hybridization. We confirmed experimentally that our device realized in-situ annealed DNA probes by which we subsequently detected target ssDNAs. We envision that this device can be utilized for fundamental studies related to nanobiodevice-based DNA detection.
Novel core–shell nanocomposite as an effective heterogeneous catalyst for the synthesis of benzimidazoles
Authors: Zheng Jianwei , Zhang Liying , Li Yang , Sun Hong-Bin , Zhang Gang , Sun Qi 
Published: March 2021

Abstract
Core–shell nanocomposites with a catalytic metal-organic framework (MOF) shell are more effective and stable than bare MOF. We have successfully designed an effective heterogeneous catalyst for the synthesis of benzimidazole by integrating acidic catalytic activity, and promoted the aerobic oxidation and magnetic recyclability of core–shell nanocomposite Fe3O4@SiO2@UiO-66. The Fe3O4@SiO2 core is encapsulated by the in situ-grown UiO-66 shell, and the UiO-66 shell retains the porous structure and crystallinity of UiO-66 with abundant exposed Lewis acid sites. It shows high catalytic ability for the synthesis of various benzimidazoles through the acid-catalyzed condensation and aerobic oxidation with in situ oxygen. The Fe3O4@SiO2 core provides magnetic recyclability of Fe3O4@SiO2@UiO-66, and maintains high catalytic ability and stability over six cycles.
Analysis of two-color photoelectron spectroscopy for attosecond metrology at seeded free-electron lasers
Authors: Maroju P K , Grazioli C , Di Fraia M , Moioli M , Ertel D , Ahmadi H , Plekan O , Finetti P , Allaria E , Giannessi L , De Ninno G , Spampinati S , Lutman A A , Squibb R J , Feifel R , Carpeggiani P , Reduzzi M , Mazza T , Meyer M , Bengtsson S , Ibrakovic N , Simpson E R , Mauritsson J , Csizmadia T , Dumergue M , Kühn S , Harshitha N G , You D , Ueda K , Labeye M , Bækhøj J E , Schafer K J , Gryzlova E V , Grum-Grzhimailo A N , Prince K C , Callegari C , Sansone G 
Published: March 2021

Abstract
The generation of attosecond pulse trains at free-electron lasers opens new opportunities in ultrafast science, as it gives access, for the first time, to reproducible, programmable, extreme ultraviolet (XUV) waveforms with high intensity. In this work, we present a detailed analysis of the theoretical model underlying the temporal characterization of the attosecond pulse trains recently generated at the free-electron laser FERMI. In particular, the validity of the approximations used for the correlated analysis of the photoelectron spectra generated in the two-color photoionization experiments are thoroughly discussed. The ranges of validity of the assumptions, in connection with the main experimental parameters, are derived.
Gravitational waves from a universe filled with primordial black holes
Authors: Papanikolaou Theodoros , Vennin Vincent , Langlois David 
Published: March 2021

Abstract
Ultra-light primordial black holes, with masses m
PBH < 109g, evaporate before big-bang nucleosynthesis
and can therefore not be directly constrained. They can however be
so abundant that they dominate the universe content for a transient
period (before reheating the universe via Hawking evaporation). If
this happens, they support large cosmological fluctuations at small
scales, which in turn induce the production of gravitational waves
through second-order effects. Contrary to the primordial black
holes, those gravitational waves survive after evaporation, and can
therefore be used to constrain such scenarios. In this work, we show
that for induced gravitational waves not to lead to a backreaction
problem, the relative abundance of black holes at formation, denoted ΩPBH,f, should be such that ΩPBH,f < 10-4(m
PBH/109g)-1/4. In particular, scenarios
where primordial black holes dominate right upon their formation
time are all excluded (given that m
PBH > 10 g for
inflation to proceed at ρ1/4 < 1016 GeV). This sets
the first constraints on ultra-light primordial black holes.