bluuebunny/crossref_metadata_2025_split huggingface dataset:
A reinvestigation of debris disc halos
Authors: Thebault P. , Olofsson J. , Kral Q. 
Published: April 2023

Context. Scattered-light images reveal that a significant fraction of debris discs consist of a bright ring beyond which extends a wide halo. This halo is expected and should be made of small grains collisionally produced in the ring of parent bodies (PBs) and pushed on high-eccentricity orbits by radiation pressure. It has been shown that, under several simplifying assumptions, the surface brightness (SB) of this halo should radially decrease as r−3.5 in scattered light
Aims. We aim to revisit the halo phenomenon and focus on two unexplored issues: (1) how the unavoidable presence of small unbound grains, non-isotropic scattering phase functions (SPFs), and finite instrument resolution affect scattered-light SB profiles, and (2) how the halo phenomenon manifests itself at longer wavelengths in thermal emission, both on resolved images and on system-integrated spectral energy distributions (SEDs).
Methods. We use a collisional evolution code to estimate the size-dependent spatial distribution of grains in a belt+halo system at steady state. We use the GRaTeR radiative-transfer code to derive synthetic images in scattered light and thermal emission, as well as SEDs.
Results. We find that unbound grains account for a significant fraction of the halo’s luminosity in scattered light, and can significantly flatten the SB radial profile for the densest and brightest discs. Because halos are strongly size-segregated with radial distance, realistic size-dependent SPFs also have an effect, resulting here again in shallower SB profiles. For edge-on discs, non-resolving the vertical profile can also significantly flatten the projected SB profile. We show that roughly half of the observationally derived halo profiles found in the literature are compatible with our new results, and that roughly half of the remaining systems are probably shaped by additional processes (planets, stellar companions, etc.). We also propose that, in future observational studies, the characteristics of the PB belts and the halos should be fitted separately. In thermal emission, we find that wide halos should remain detectable up to the far-infrared (far-IR) and that, with the exception of the ~8–15 µm domain, the halo accounts for more than half of the system’s total flux up to λ ~ 80–90 µm. The contribution from the halo strongly decreases in the submm to mm but still represents a few percent of the system’s luminosity at λ ~ 1 mm. For unresolved systems, the presence of a halo can also affect the determination of the radius of the disc from its SED.
Revue narrative : l’effet de la fatigue mentale sur les performances psychomotrices dans les sports collectifs
Authors: Vitry Florian , Campo Mickaël , Lepers Romuald 
Published: April 2023

Introduction :  La fatigue mentale (FM) est un état psychobiologique causé par une tâche cognitive prolongée pouvant altérer les performances physiques. Récemment, plusieurs études ont indiqué que la FM pouvait également affecter les performances psychomotrices en sport collectif. L’objectif de cette revue narrative est de synthétiser les principales connaissances issues de la littérature afin d’examiner l’effet de la FM sur les performances psychomotrices dans les sports collectifs. Méthodes : Les études retenues dans cette revue narrative impliquaient : i) les recherches sur les performances psychomotrices dans un contexte spécifique aux sports collectifs, ii) des interventions induisant une FM et iii) une population comprenant des individus en bonne santé. Résultats : Quatorze articles ont été retenus. Les résultats montrent que la FM a eu un impact négatif sur les paramètres tels que la prise de décision, le temps de réaction et la précision. Aucun changement des paramètres physiologiques ne pouvait expliquer l’effet négatif de la FM sur les performances. Conclusion : Les articles sélectionnés ont indiqué que la FM affecte négativement les performances psychomotrices dans les sports collectifs. Les futures recherches doivent utiliser des tâches cognitives fatigantes plus écologiques et investiguer les mécanismes neurophysiologiques, afin de permettre une meilleure compréhension des interactions entre la FM et les performances psychomotrices dans les sports collectifs.
Incarceration of the Gravid Uterus – a Rare Condition not to be Missed
Authors: Grosse Nadja , Liem Sandy , Miller Elvira , Möller Gunnar , Weidemann Jürgen , Morfeld Christine A , Schild Ralf , Oehler-Rahman Katrin 
Published: April 2023

Abstract
Background Incarceration of a gravid uterus (IGU) is a rare manifestation
in obstetrics that may be associated with serious complications.
Case We report on a 29-year-old patient at 34+2 weeks’
gestation who presented with HELLP syndrome. IGU had been initially diagnosed in
our department at 23+6 weeks’ gestation. Urgent cesarean section
was performed taking into account the specific characteristics of IGU. A healthy
premature child was born. With the prior knowledge of IGU no complications
during delivery occurred and mother and child had favorable outcomes.
Conclusion IGU is a rare condition in pregnancy that should not be
overlooked. Early diagnosis and treatment of IGU can prevent serious
complications to the mother and child during pregnancy and delivery. In this
report, we discuss the specific peculiarities of an incarcerated uterus that
need to be considered in this regard.
Angioinvasive gastrointestinal mucormycosis with duodenal necrosis and perforation in a patient with visceral myopathy
Authors: Hunter Nicole , Kusnik Alexander , Hatem Layla , Chodos Ari , Baratta Anthony , Penmetsa Prasad , Levin Yana 
Published: April 2023

AbstractA 55-year-old woman with a past medical history of visceral myopathy with multiple resultant abdominal surgeries, colectomy caused by severe pseudo-obstruction, and end-stage renal disease on hemodialysis presented with complaints of nausea, abdominal distention, vomiting, and diarrhea for five days. Small-bowel obstruction was identified on CT. She subsequently developed acute gastrointestinal bleeding, anemia, and hemodynamic instability. Extensive gastric ulceration with frank hemorrhage prompted urgent subtotal gastrectomy with multiple intraoperative findings, including a necrotic distal duodenum. Surgical pathology showed invasive fungal infection of the duodenum with perforation, morphologically compatible with invasive mucormycosis. The patient was started on intravenous liposomal amphotericin B, but despite best efforts, the patient ultimately succumbed to this invasive fungal infection in addition to sepsis and multi-organ failure.
Spontaneous detachment of the spiral overtube from the endoscope in the upper esophagus: a case report and literature review of a rare complication during motorized spiral enteroscopy
Authors: Wiedbrauck Damian , Wiedbrauck Felix , Freund Ulrich , Rodenberg Frauke , Prenzel Jens , Hollerbach Stephan 
Published: April 2023

Abstract
Background Motorized spiral enteroscopy (MSE) is a recent modality for diagnostic and therapeutic examination of the small bowel using a spiral-shaped overtube with an integrated electric motor attached to an endoscope. With growing evidence of its efficacy, MSE is increasingly being used by endoscopic facilities. We herein present an uncommon case of the detachment of the spiral overtube from the endoscope during MSE.
Case Report We performed antegrade MSE in a 75-year-old female under general anesthesia for coagulation of multiple small-bowel arteriovenous malformations and resection of a polyp detected on a previous capsule endoscopy. The management was successful, and we had no passage difficulties. However, during the withdrawal phase of the enteroscope, the entire spiral overtube disconnected from the endoscopic shaft and became stuck in the esophagus and pharynx. Attempts to remove the lodged spiral using various endoscopic forceps, graspers, snares, or a dilatation balloon failed. Also, the laryngoscopic use of Magill forceps did not allow grabbing the spiral properly. Eventually, the spiral could be retrieved laryngoscopically with arthroscopic grasping forceps. This incident caused laryngeal swelling and bleeding lacerations of the upper esophagus, which were clipped on a subsequent gastroscopy. No further long-lasting complications occurred in the patient.
Conclusion Detachment of the spiral from the enteroscope is a potentially life-threatening and challenging complication of MSE. Artificial ventilation under observation by an anesthesiologist allowed for calm management of this dangerous situation and increased the overall safety of the procedure. Hence, we believe that in the context of antegrade MSE, general anesthesia with endotracheal intubation should be mandatory.
Dispersion in Crystal Structures of 1-Chloro-3-aryl-5-trihalomethyl-1λ4,2,4,6-thiatriazines: Towards an Understanding of the Supramolecular Organization of Covalent Thiazyl Chlorides
Authors: Boeré René T. , Kondage Savini Suduweli , Roemmele Tracey L. 
Published: April 2023

AbstractThe syntheses of five new 1-chloro-3-aryl-5-trichloromethyl-1λ4,2,4,6-thiatriazines, aryl = 4-R-C6H4- (R = CH3O, CH3, H, Cl and CF3), are reported with full characterization. Single-crystal X-ray diffraction structure determinations on all, as well as the 5-CF3 analogue which also has R = CF3, with models produced by Hirshfeld atom refinement, produced high-accuracy structures. All six exemplars form lateral dimers with short contacts that define a centrosymmetric {δ+S···Nδ−}2 motif, with interaction distances from 3.0473(9) to 3.422(3) Å, which do not vary in an expected manner with R. Normal population analysis charges computed by B3LYP-D3/6-311++G(d,p) DFT methods show small variations, and entirely as expected from the inductive effects of R. Gas-phase minimization of the dimers with M06-2X/aug-cc-pVDZ or B3LYP-D3/6-311++G(d,p) methods, with full counterpoise correction, replicate the experimental geometries for the 5-CF3, the 5-CCl3/CH3OC6H4 and the 5-CCl3/CH3C6H4 experimental structures, but diverge for other CCl3 exemplars. Interaction energies are more than double those computed for [(HC)2N2S]2. Using a geometry-optimized model with H in place of CX3, the interaction energy reduces to a very realistic –22 to –24 kJ/mol for just the {δ+S···Nδ−}2 motif, suggesting that CX3 interactions contribute 21% (CF3) to 37% (CCl3) of the total.
Giant Ruptured Azygos Vein Aneurysm in a 33-Year-Old Woman
Authors: Uzdenov Murat , Kroll Johannes , Ballazhi Fatos , Czerny Martin 
Published: April 2023

AbstractThe rupture of an azygos vein aneurysm is a very rare but catastrophic complication. Careful differential diagnosis of acute dyspnea and thoracic pain in young patients is essential for effective and early management. We present the case of a young woman with a huge, spontaneously ruptured vena azygos saccular aneurysm, successfully repaired via median sternotomy under cardiopulmonary bypass.
Phytochemical Analysis of Nothapodytes tomentosa and Distribution and Content of Camptothecin and its Analogues in Four Plants
Authors: Li Junheng , Chen Yin , Wu Lei , Tuo Xiaotao , Wang Li , Zhou Guanglian , Huang Sheng-Xiong , Xiong Wei , Huang Jian-Ping 
Published: April 2023

AbstractCamptothecin (CPT) and its derivatives have attracted worldwide attention because of their notable anticancer activity. However, the growing demand for CPT in the global pharmaceutical
industry has caused a severe shortage of CPT-producing plant resources. In this study, phytochemical analysis of Nothapodytes tomentosa results in the isolation and identification of
CPT (13) and 16 analogues (1 – 12, 14 – 17), including a new (1) and five known (9, 10, 12, 15, and 17) CPT analogues with an open E-ring. In
view of the potential anticancer activity of CPT analogues with an open E-ring, the fragmentation pathways and mass spectra profiles of these six CPT analogues (1, 9, 10, 12, 15, and
17) are investigated, providing a reference for the rapid detection of these compounds in other plants. Furthermore, based on the fragmentation patterns of CPT (13) and known
analogues (2 – 8, 11, 14, 16, 18 – 26), the distribution and content of these compounds in different tissues of N. tomentosa, N. nimmoniana, Camptotheca
acuminata, and Ophiorrhiza japonica are further studied. Our findings not only provide an alternative plant resource for further expanding the development and utilization of CPT
and its analogues, but also lay a foundation for improving the utilization of known CPT-producing plant resources.
Accelerated Electrosynthesis Development Enabled by High-Throughput Experimentation
Authors: Mo Yiming , Chen Huijie 
Published: April 2023

AbstractElectrochemical synthesis has recently emerged as an environmentally benign method for synthesizing value-added fine chemicals. Its unique reactivity has attracted significant interests of synthetic chemists to develop new redox chemistries. However, compared to conventional chemistry, the increased complexity caused by electrode materials, supporting electrolytes, and setup configurations create obstacles for efficient reaction discovery and optimization. The recent increasing adoption of high-throughput experimentation (HTE) in synthetic chemistry significantly expedites the synthesis development. Considering the potential of implementing HTE in electrosynthesis to tackle the challenges of increased parameter space, this short review aims at providing recent advances in the HTE technology for electrosynthesis, including electrocatalysts screening, device miniaturization, electroanalytical methods, artificial intelligence, and system integration. The discussed contents also cover some topics in HTE electrochemistry for areas other than synthetic chemistry, hoping to spark some inspirations for readers to use interdisciplinary techniques to solve challenges in synthetic electrochemistry.1	Introduction2	Parallelized Reaction Screening3	High-Throughput Screening for Electrocatalysts4	Miniaturization of Screening Devices5	Analytical Methods for Electrosynthesis Screening6	Artificial Intelligence for High-Throughput Screening7	Integrated Screening Systems8	Conclusion and Outlook
Crystal Engineering, Electron Conduction, Molecular Recognition and Reactivity by Chalcogen Bonds in Tetracyanoquinodimethanes Fused with [1,2,5]Chalcogenadiazoles
Authors: Suzuki Takanori , Shimajiri Takuya , Jacquot de Rouville Henri-Pierre , Heitz Valérie , Akutagawa Tomoyuki , Fukushima Takanori , Ishigaki Yusuke 
Published: April 2023

AbstractStudies on a series of tetracyanoquinodimethanes (TCNQs) fused with [1,2,5]chalcogenadiazole rings reveals that chalcogen bonds (ChBs), through E•••N≡C (E = S or Se) contacts, are a decisive factor in determining their crystal structures, with the formation of one- or two-dimensional networks in a lateral direction. For anion-radical salts generated by one-electron reduction, electron conduction occurs in the direction of the network due to intermolecular electronic interactions involving ChBs. Based on the reliable synthon E•••N≡C for crystal engineering, molecular recognition occurs so that solid-state molecular complexes are selectively formed with certain donors, such as xylenes, among their isomers by charge-transfer-type clathrate formation. The inclusion cavity of the clathrate might provide a reaction environment for photoinduced electron transfer in the solid state. The accommodation of multiple conformers of overcrowded ethylene exhibiting thermo/mechanochromism is another example of a novel function that can be realized by ChBs through E•••N≡C contacts. Therefore, these chalcogenadiazolo-TCNQs endowed with the ability to form ChBs are promising materials for the development of novel solid-state functions.1	Introduction2	Bis[1,2,5]thiadiazolo-TCNQ (BTDA)2.1	Chalcogen Bonds in Crystal Structures of BTDA and its Se Analogues2.2	Electronic Effects of Chalcogen Bonds in Organic Conductors Consisting of BTDA2.3	Molecular Recognition by Chalcogen Bonds in Molecular Complexes of BTDA2.4	Single-Crystalline-State Photoreactions of Molecular Complexes of BTDA2.5	Overcrowded Ethylene Composed of a BTDA Substructure3	TCNQ Analogues Fused with a [1,2,5]Chalcogenadiazole3.1	Crystal Structures of Chalcogenadiazolo-TCNQs3.2	Crystal Structures of Chalcogenadiazolo-TCNNQs: An E•••N≡C Chalcogen Bond versus a Weak C–H•••N≡C Hydrogen Bond3.3	Molecular Recognition by Chalcogen Bonds in TCNNQ Derivatives4	Outlook
Five-Year Survival of Patients Treated with Minimally Invasive Direct Coronary Artery Bypass (MIDCAB) Compared with the General Swiss Population
Authors: Reuthebuch Oliver , Stein Alina , Koechlin Luca , Gahl Brigitta , Berdajs Denis , Santer David , Eckstein Friedrich 
Published: April 2023

Abstract
Background To evaluate the midterm follow-up and 5-year survival outcome of the minimally invasive direct coronary artery bypass (MIDCAB) procedure compared with the survival of the general Swiss population.
Methods Retrospective study on preoperative data, intraoperative data, and postoperative outcome of patients who underwent MIDCAB surgery between June 2010 and February 2019. To assess validity of this surgical therapy, outcomes were compared with survival data of a gender- and age-matched cohort of the general Swiss population taken from the database of the Swiss Federal Statistical Office.
Results A total of 88 patients were included. Median (interquartile range [IQR[) age was 66 (56–75) years, and 27% (n = 24) were female. The median (IQR) length of the in-hospital stay was 7 (6–8) days. No postoperative stroke occurred. The 30-day mortality was 1.1% (n = 1). Reintervention for failed left internal mammary artery was needed in 1.1% (n = 1). The median (IQR) ejection fraction was 58% (47–60) preoperatively and remained stable during follow-up. The median (IQR) follow-up period was 3 (1.1–5.2) years. Five years postoperatively, 83% (confidence interval, 69–91) of the patients were alive, showing an overlap with the range of survival of the matched subcohort of the general Swiss population (range, 84–100%).
Conclusion Though suffering from coronary heart disease, patients after MIDCAB show almost equal survival rates as an equivalent subcohort corresponding to the general Swiss population matched on age and gender. Thus, our data show this treatment to be safe and beneficial.
47.1.5.5 Synthesis of Alkenes via Metal-Catalyzed Hydrofunctionalizations
Authors: Cheng Z. , Zheng Y. , Lu Z. 
Published: April 2023

AbstractAlkenes bearing a functional group directly connected to the alkenyl moiety and functionalized allylic alkenes are important compounds. This review covers the synthesis of certain such alkenes via metal-catalyzed hydrofunctionalizations of alkynes and allenes. This update mainly summarizes protocols, reported in the period 2010–2020, that allow efficient access to various functional-group-tethered alkenes with high chemo-, regio-, and stereoselectivities.
Why banks insure structured commodity trade finance risk: evidence from a worldwide survey
Authors: Braun Alexander , Fischer Marius , Schreiber-Orosz Csilla 
Published: April 2023

AbstractWe identify major drivers of the demand for credit insurance, using a worldwide survey among banking executives in the structured commodity trade finance business. Our results show that a bank’s propensity to purchase insurance increases in its experience and expertise with the product, the impact of insurance coverage on its balance sheet, the risk of the underlying transaction, as well as the intensity of broker relationships. Other factors, such as the size of the commodity trade finance portfolio, the competitiveness of the insurance price, and the risks arising from commodity price volatility, seem to be of lesser relevance.
Platelet-rich plasma and ovarian quiescence: a bovine in vitro model for regeneration of the ovary
Authors: Lange-Consiglio Anna , Gaspari Giulia , Riccaboni Pietro , Canesi Simone , Bosi Giampaolo , Vigo Daniele , Cremonesi Fausto 
Published: April 2023

Context Ovarian quiescence can be due to hormonal deficiency usually caused by apoptosis of granulosa cells responsible for oestrogen synthesis. Aim This study evaluated the regenerative effect of platelet rich plasma (PRP) on bovine in vitro models to understand its effect on granulosa cells. Methods Quiescent and healthy ovarian sections were cultured in the presence/absence of PRP for 72 h and, at different times (0, 24, 48 and 72 h), hematoxylin-eosin and immunohistochemical detection of Ki-67 were performed. Additionally, granulosa cells collected from healthy bovine ovaries were stressed with 100 ng/mL of lipopolysaccharide (LPS) in presence/absence of PRP and evaluated at 0, 4, 8 and 24 h for apoptosis by acridine orange and propidium iodide staining. Enzyme-linked immunosorbent assay tests were performed to evaluate oestrogen (E2) and anti-Müllerian hormone (AMH) concentrations on cultures of ovarian slices and granulosa cells. Key results In slides of quiescent ovaries treated with PRP, a marked and widespread positivity to Ki-67 was expressed by 40–60% of the follicular wall cells at 48 h of culture. Levels of E2 and AMH were significantly higher compared to untreated quiescent samples reaching the levels of healthy control samples. PRP counteracted the LPS effect and apoptosis (at 24 h, there were 93.44 ± 3.51% live cells with LPS + PRP compared to 37 ± 1.32% with LPS) and significantly increased concentrations of E2 and AMH. Conclusions PRP can stimulate granulosa cell proliferation and counteract inflammatory processes in vitro. Implications This treatment could improve the reproductive ability of quiescent females.
High-reliability circular-contact RF MEMS switches in silicon hermetic package
Authors: Jiang Lili , Ma Ning , Wang Lifeng , Huang Xiaodong 
Published: April 2023

Abstract
This paper presents a highly reliable direct-contact electrostatic RF MEMS switch. To enhance the reliability, the contact structure of the switch is designed into a circular shape, and the bottom contact surface is covered by a hard metal Pt layer. In addition, a high resistance silicon cap is used for hermetic packaging of the switch structure. By theoretical calculation and FEM simulation, parameters of the switch structure as well as its packaging are co-designed and optimized. During fabrication, the circular contact structure is formed by a three-step etching process; and after fabrication, the silicon hermetic packaging is realized by epoxy bonding and multi-step dicing process. The measured insertion loss and isolation of the switch with package is −0.41@20 GHz, and −20.9@20 GHz. Due to the optimized design, the RF performance of the switch remains almost unchanged before and after packaging. The measured driving voltage is 50–60 V, and the ON/OFF switching time is 25 μs/5 μs. The lifetime test shows that the switch passes the 2.6 billion times hot switching at the working power of 25 dBm. Finally, the switch also shows good performances in package leak rate test.