bluuebunny/crossref_metadata_2025_split huggingface dataset:
The relationship between anxiety and cognitive emotion regulation strategies: A meta‐analysis
Authors: Yao Yujia , Chen Jingquan , Xuan Yuyang 
Published: September 2023

AbstractPrevious studies have shown the correlation between anxiety and cognitive emotion regulation strategies, but they have not distinguished between state anxiety and trait anxiety. Thus, we systematically investigated the relationships among strategies, state/trait anxiety and their influencing factors by meta‐analysis. A total of 53 original studies were included, with a total of 33,165 participants. We found: (1) Trait anxiety is negatively correlated with adaptive strategies, and positively correlated with maladaptive strategies. State anxiety is positively correlated with maladaptive strategies, but is uncorrelated to adaptive strategies. (2) Sex significantly moderates the relationships between state anxiety and strategies, but not between trait anxiety and strategies. Both culture and age significantly moderate the relationships between trait anxiety and cognitive emotion regulation strategies (CERS). Meanwhile, culture moderates the relationships between state anxiety and CERS, and age moderates the relationships between state anxiety and maladaptive strategies. Thus, researches in the future should distinguish between the state and trait anxiety.
B‐N Covalent Bond Embedded Double Hetero‐[n]helicenes for Pure Red Narrowband Circularly Polarized Electroluminescence with High Efficiency and Stability
Authors: Meng Guoyun , Zhou Jianping , Han Xu‐Shuang , Zhao Wenlong , Zhang Yuewei , Li Meng , Chen Chuan‐Feng , Zhang Dongdong , Duan Lian 
Published: September 2023

AbstractChiral B/N embedded multi‐resonance (MR) emitters open a new paradigm of circularly polarized (CP) organic light‐emitting diodes (OLEDs) owing to their unique narrowband spectra. However, pure‐red CP‐MR emitters and devices remain exclusive in literature. Herein, by introducing a B‐N covalent bond to lower the electron‐withdrawing ability of the para‐positioned B‐π‐B motif, the first pair of pure‐red double hetero‐[n]helicenes (n = 6 and 7) CP‐MR emitter peaking 617 nm with a small full‐width at half‐maximum of 38 nm and a high photoluminescence quantum yield of ≈100% in toluene is developed. The intense mirror‐image CP light produced by the enantiomers is characterized by high photoluminescence dissymmetry factors (gPL) of +1.40/−1.41 × 10−3 from their stable helicenes configuration. The corresponding devices using these enantiomers afford impressive CP electroluminescence dissymmetry factors (gEL) of +1.91/−1.77 × 10−3, maximum external quantum efficiencies of 36.6%/34.4% and Commission Internationale de I’Éclairage coordinates of (0.67, 0.33), exactly satisfying the red‐color requirement specified by National Television Standards Committee (NTSC) standard. Notably a remarkable long LT95 (operational time to 95% of the initial luminance) of ≈400 h at an initial brightness of 10,000 cd m−2 is also observed for the same device, representing the most stable CP‐OLED up to date.
Discovery of Unconventional Proton‐Conducting Inorganic Solids via Defect‐Chemistry‐Trained, Interpretable Machine Learning
Authors: Fujii Susumu , Shimizu Yuta , Hyodo Junji , Kuwabara Akihide , Yamazaki Yoshihiro 
Published: September 2023

AbstractHigh‐throughput computational screening and machine learning hold significant potential for exploring diverse chemical compositions and discovering novel inorganic solids. However, the complexity of point defects, which occur in all inorganic solids and are often crucial to their functionality and synthesizability, presents significant challenges. Here, this study presents a defect‐chemistry‐trained, interpretable machine learning approach, designed to accelerate the exploration and discovery of unconventional proton‐conducting inorganic solid electrolytes. By considering dopant dissolution and hydration reactions, the machine learning models provide quantitative predictions and physical interpretations for synthesizable host–dopant combinations with hydration capabilities across various structures. Utilizing these insights, two unconventional proton conductors, Pb‐doped Bi12SiO20 sillenite and eulytite‐type Sr‐doped Bi4Ge3O12, are discovered in the first two synthesis trials. Notably, the Pb‐doped Bi12SiO20 represents an unprecedented class of proton‐conducting electrolyte composed solely of groups 14 and 15 cations and featuring a sillenite structure. It exhibits unique and fast 3D proton conduction along a loosely bonded BiO5 network. This study demonstrates an efficient approach for exploring novel inorganic materials.
Effectiveness of cardiac palliative surgery for trisomy 18 patients with increased pulmonary blood flow
Authors: Takai Akari , Yamagishi Masaaki , Ikeda Kazuyuki , Sugimoto Atsuya , Ichise Eisuke , Maeda Yoshinobu , Teramukai Satoshi , Hasegawa Tatsuji , Oda Shinichiro , Iehara Tomoko 
Published: September 2023

AbstractCongenital heart disease (CHD) is common among patients with trisomy 18 (T18), but cardiac surgery has been rarely indicated for T18 patients due to their short life span. Although the therapeutic effects of aggressive interventions were recently demonstrated for T18 patients, the subjects and factors examined varied, resulting in inconsistent findings. Therefore, the effects of cardiac surgery for T18 remain unclear. We herein investigated the outcomes of cardiac palliative surgery for CHD with increased pulmonary blood flow in T18 patients. 27 patients were examined: 13 (48.1%) underwent cardiac palliative surgery and 14 (51.9%) did not. Median survival times in the no‐surgery and surgery groups were 223.0 days (95% confidence interval [CI]: 46–361 days) and 723.0 days (95% CI: 360–1447 days), respectively. The number of patients with pulmonary hypertension significantly differed between the two groups (5 of 14 in the no‐surgery group and 0 in the surgery group). Five of 14 patients in the no‐surgery group and 10 of 13 in the surgery group were discharged to home care (odds ratio: 10.8 [95% CI: 1.07–110.0]). Therefore, cardiac palliative surgery may be used to treat CHD with increased pulmonary blood flow in T18 patients.
Know when a school official's personal observations are considered education records
Authors: Lyerly Eric 
Published: September 2023

The Family Educational Rights and Privacy Act generally prohibits a college or university from disclosing personally identifiable information in a student's education record to a third party without consent. However, in an April 2023 guidance document, the Student Privacy Policy Office explained that “information that a school official obtains through personal knowledge or observation … is generally not protected by FERPA's limitations on the disclosure of education records, even if that information is also contained in an education record” (Student Privacy Policy Office, Guidance for School Officials on Student Health Records, April 12, 2023, bit.ly/3Nu74UK).
Triterpenoids from Meehania fargesii with Cytotoxic Activity1
Authors: Huang Xingfei , Wang Yumeng , Li Xingyao , Yuan Feng , Zhou Guangxin , Meng Dali 
Published: September 2023

AbstractIn the investigation of Meehania fargesii, eighteen triterpenoids were isolated and identified, including a previously unknown compound with an 13,27‐cycloursane skeleton, using techniques like 1D and 2D NMR, and HR‐MS. Furthermore, the cytotoxicity of these compounds were evaluated against HCT116, MCF‐7, and AGS cell lines using the CCK‐8 method to examine their structure–activity relationship. Remarkably, compounds 13 and 16 exhibited higher cytotoxicity across all three cell lines compared to the positive drug. Western blot analysis revealed that these compounds activated apoptosis in HCT116 cells by promoting the Bax protein and inhibiting the Bcl‐2 protein. This suggests that compounds 13 and 16 have potential as apoptosis‐inducing agents in HCT116 cells.
Gastric adenocarcinoma complicated by an intra‐abdominal abscess: A case report
Authors: Rentiya Zubir S. , Chu Carredo Carlo Kristian , Owolabi Oluwasayo , Inban Pugazhendi , Arslan Faiza , Odoma Victor Ameh , Adegbite Abiodun , Francis Maya Ann , Okobia Isioma R. , Sajjad Taha , Khan Aadil Mahmood , Kelechi Anasonye Emmanuel 
Published: September 2023

AbstractPerforated gastric adenocarcinoma is a rare and challenging complication of gastric cancer, which can lead to intra‐abdominal abscesses and other complications. Management of perforated gastric adenocarcinoma with an intra‐abdominal abscess requires a multidisciplinary approach, including empiric antibiotic therapy and fluid resuscitation, partial gastrectomy with Roux‐en‐Y reconstruction, and image‐guided drainage. This case report highlights the complex and challenging nature of managing perforated gastric adenocarcinoma with intra‐abdominal abscesses. Prompt recognition and timely intervention are essential for favorable outcomes. Postoperative care and close follow‐up are also important.
Melanin, A Fungal Photosensitizer for Cellulose Oxidizing AA9‐LPMO Enzymes
Authors: Monclaro Antonielle , Gonçalves Thiago , Magri Silvia , Ovaert Justin , Decembrino Davide , Debecker Damien P. , Kadowaki Marco , Doneux Thomas , De Leener Gaël , Zarattini Marco , Luhmer Michel , Cannella David 
Published: September 2023

AbstractMelanin is a class of hetero‐polymer pigments commonly found in nature and widely in fungi. Often referred to as the “animal lignin“, melanin is a very abundant bioresource and features many catalytically interesting properties. We conceived that, upon light absorbance, the polymer could promote long‐distance electron donation to fuel redox enzymatic catalysis or controlled in‐situ generation of H2O2. Here, we report on a fungal photo‐biocatalytic system extracted from the commercially relevant A. nidulans, where photoactivated melanin acts as an electron donor for the cellulose‐degrading AnAA9A and TtAA9E metalloenzymes. Furthermore, there was a stable and significant accumulation of H2O2 when melanin was irradiated by visible light; having the peroxide functioning as a co‐substrate for the AA9 LPMO enzymes. Oxidized cellulose‐derived oligosaccharides were detected in the dark and under light conditions, confirming the potential of melanin to reduce AA9s. When placed under light conditions, they provided hydrogen peroxide as a co‐substrate for AA9s. The use of light to tune the in‐situ generation of H2O2 by natural pigments might be pivotal to enable also another peroxide‐dependent enzymatic catalysis.
Experimental comparison between threaded‐bars and single‐bolts end plate asymmetrical steel joints
Authors: Loureiro Alfonso , López Manuel , Gutiérrez Ruth , Reinosa J. Manuel 
Published: September 2023

AbstractEnd plate beam‐column bolted joints are widely used in the field of steel structures. The usual configuration consists of individual bolts that join the end plate of the beam with the column flange. Usually, the use of stiffeners is needed in this type of joints, in order to reinforce the tension and compression zones of the column web, and to avoid local buckling problems.This configuration, applied to asymmetric connections, gives rise to the appearance of shear stresses in the column web, even with symmetric loading conditions on both sides of the connection.The method proposed in this work to improve the behavior of end plate asymmetrical steel joints, without using welded stiffeners (which significantly increases the cost of the joint), consists in using threaded bars as joining elements, instead of single bolts. Threaded bars have several purposes: to create the joint itself, to reinforce the tension and compression zones, and to reduce the shear stresses in the column web panel.In the present work, two end plate steel joints made up of an HEA200 column, and IPE200 and IPE300 beams have been tested. One of them with threaded bars with double nuts (internal and external) in the traction and compression zones, and the other one with single bolts.Symmetrical forces have been applied at the ends of the beams, subjecting the joints to symmetrical bending moments on both sides of the connection. The tests have been instrumented through the use of load cells, displacement sensors and inclinometers. The results show an important increase in the stiffness and the resistance of the joint with threaded bars, compared with the single bolts joint.This work will serve as the basis for the calibration of the corresponding finite element models, and the subsequent parametric study of this type of joints.
Load‐deformation behavior of injection bolts for maintenance of steel structures under dynamic loads
Authors: Ungermann Dieter , Kröger Lisa 
Published: September 2023

AbstractConnections of steel‐structures under dynamic loads need to be slip‐resistant according to EN 1993‐2. Bolted connections without slip can be realized with fitted bolts, preloaded high strength friction grip (HSFG) bolts or injection bolts. Injection bolts are particularly advantageous because the increased effort required for reaming the holes for fitted bolts or for special surface preparation for HSFG bolts can be avoided. The paper focuses on the experimental analysis of connections with non‐preloaded and preloaded injection bolts according to EN 1090‐2. Different resins and curing conditions are considered, as well as different surface treatments or friction coefficients. Thus, the interaction between the slip resistance and the bearing resistance of preloaded injection bolts is investigated more detailed.
I‐beam to RHS‐column joints with welded studs under cyclic loading
Authors: García Ismael , López‐Colina Carlos , Serrano Miguel A. , Wang Yong 
Published: September 2023

AbstractThe design of removable beam‐column joints between open structural steel beams and rectangular hollow section (RHS) columns is not easy because of the inaccessibility to the tube interior from outside. I‐beam to RHS‐column joints with threaded welded studs are of great interest due to their low‐cost assembling technique and easy on‐site execution. This study examines the cyclic performance of these joints with welded studs. A quasi‐static experimental study on the cyclic response of eight joint specimens is described. The strength of the joint and the failure modes were revealed. The ductility of the joints was also evaluated according to the rotation capacity after yielding, classifying all of them as having intermediate ductility and, therefore, implying some capacity to withstand limited plastic deformations when subjected to seismic forces. Some equations were also used to classify the joints according to the components that mainly govern the deformation of the full joint. In addition, the energy dissipation rate was assessed for all the specimens, finding the highest energy dissipation rates in the most rigid joints.
Block shear strength of high strength steel staggered bolted connections
Authors: Lin Xue‐Mei , Yam Michael C.H. , Chung Kwok‐Fai , Song Yuchen 
Published: September 2023

AbstractThis paper presents an experimental and numerical study of block shear strength of staggered bolted connections made of high strength steel (HSS). The study aims to examine the effect of low ductility and low tensile‐to‐yield strength ratio of HSS material on the behaviour and block shear strength of staggered bolted connections. Two Q690 HSS staggered bolted connections were tested and failed in block shear failure, which was characterised by tension fracture of the staggered net tension plane and significant shear deformation along the shear plane. The test observations were further interpreted by finite element (FE) analysis. The test results and FE analysis indicate that the block shear failure mechanism of staggered bolted connections is the fracture of the staggered net tension plane combined with the yielding of the effective shear plane. Finally, the design methods in various design codes for evaluating the block shear strength of bolted connections were assessed and the results showed that the existing design methods provided inconsistent predictions of the block shear strength of HSS staggered bolted connections. More experimental and numerical works are currently in progress to further understand the block shear strength of HSS staggered bolted connections.
Use of adhesives in preloaded bolted connections for hot‐dip galvanised constructions
Authors: Mantik Justus , Glienke Ralf , Denkert Christian , Dörre Maik , Vallée Till , Fricke Holger , Henkel Knuth‐Michael 
Published: September 2023

AbstractFatigue loaded structures in steel construction, e. g. bridges and towers of wind turbines, are preferably executed with slip‐resistant connections since these connections are generally regarded as fatigue resistant. Nevertheless, the transferable shear loads are limited by the slip factor and the preload level in the bolts. With additionally applied adhesive on the friction surfaces, the so‐called preloaded hybrid connection is formed. The related increase in load capacity considering various manufacturing influences is presented in the following article.
Preliminary study of axial‐moment interaction diagrams for semi‐rigid end plate bolted connections
Authors: Gracia Javier , Gil Beatriz , Bayo Eduardo 
Published: September 2023

AbstractThis research deals with the axial‐bending interaction in bolted steel beam to column connections along the strong axis of the column. In order to define the interaction curves, firstly, a series of tests of doubly symmetric bolted connections were carried out in which two column sizes were considered, while the beam, end plate and bolts remained the same. These joints were tested under pure compression, as well as simultaneous bending and compression, and with different load levels. Afterwards, reduced finite element models including initial imperfections were made. These models are validated by means of the results obtained in the experimental program. The aim of the reduced model is to enlarge the range of studied loading combinations in terms of different percentages of axial load and bending moment. Finally, with the results obtained, a preliminary normalized interaction diagram for this type of joints was deduced.
Effect of Curling Phenomenon on Block Shear and Tear‐out Strengths of Bolted Connections
Authors: Pham Viet Binh , Pham Cao Hung , Hancock Gregory J 
Published: September 2023

AbstractBlock shear and tear‐out behaviours and strengths of cold‐formed steel bolted connections have been thoroughly investigated in the literature. Nevertheless, the curling phenomenon occurring in the thin plate which may affect the strength and behaviour of these failure modes in bolted connections between thin and thick plates has not been researched in detail. Therefore, the behaviour and block shear and tear‐out strengths of bolted connections undergoing the curling effect were investigated through a series of 48 tests at the University of Sydney. Various types of cold‐formed steel sheets (i.e., G300, G450, G500 and G550 to AS 1397) were used for the specimens to obtain a wide range of material properties. The cold‐formed steel sheets with thickness of 1.0 mm, 1.2 mm and 1.9 mm in conjunction with different edge distances as the main variables were studied to investigate the curling effect. On the basis of the experimental results, the observed curling phenomenon not only changed the behaviour but also affected the ultimate strength of the bolted connections. Comparison of the test results with the design specifications and standards from AISI S100:16 (R2020) w/S3‐22 and AS/NZS 4600:2018 demonstrate that the design equations overestimate the nominal shear strength without the consideration of curling. Consequently, a new design equation for the block shear and tear‐out strength considering the curling effect is proposed in this paper.
Influence of semi‐rigid joints on the seismic performance of single‐storey steel frames
Authors: Venneri Greta Agata , De Matteis Gianfranco , Brando Giuseppe 
Published: September 2023

AbstractThe design of joints of steel frames is often simplified, assuming that they have a fully rigid or ideally pinned behaviour. This wrong assumption is sometimes acquiesced by national technical codes, which mainly focus on the behaviour of simple connections and neglect the role of the joints in terms of global structural behaviour, particularly under lateral loads. In this paper, a numerical study about the evaluation of the influence of partial‐strength/semi‐rigid joints on the seismic performance of one‐storey steel buildings is presented. For this purpose, a population of real steel buildings has been considered, for which column bases and/or beam‐to‐column joints were originally designed as infinitely resistant/rigid restraints, but that, after the application of the component method, were found to be characterized by a partial‐strength/semi‐rigid behaviour. Finite element models of the examined buildings were developed, assuming both the theoretical and the actual joint behaviour. Fragility curves were constructed through nonlinear dynamic analyses, so to evaluate the seismic vulnerability of the structures and assess whether they need joint reinforcement, or, otherwise, if they already ensure adequate seismic safety.
Study on load‐carrying capacity of MAG butt‐welded mixed connections with different steel strengths
Authors: von Arnim Mareike , Eichler Stefan , Brätz Oliver , Hildebrand Jörg , Kuhlmann Ulrike , Bergmann Jean Pierre , Flügge Wilko 
Published: September 2023

AbstractMixed connections of normal‐strength steel and high‐strength steel can enable an optimum resource‐saving use of materials by adapting the material strength to the forces acting on them. But the design and calculation of butt‐welded mixed connections is not clearly regulated in the currently valid standards EN 1993‐1‐8 and EN 1993‐1‐12. In the research project Effective design concepts for mixed connections in steel structures an extensive experimental program with 180 mixed connections has been conducted to investigate the load‐carrying capacity and behaviour of these connections. The weld joint specimens were made with normal‐strength steel S355J2+N and different high‐strength steels S690QL, S700MC or S960QL. Varying parameters were also the filler metals, plate thicknesses, weld bevels and the heat input during welding. The influence of these parameters on the load‐carrying capacity and the deformation behaviour of mixed connections was investigated. Moreover, high‐resolution microhardness mappings (UCI) on the welded specimens were carried out to examine the formation of the soft zone in the heat‐affected zone of the high‐strength steels.
Cyclic behaviour of 3D cut welded connections with CHS columns and through I‐beams
Authors: Di Benedetto Sabatino , Latour Massimo , Francavilla Antonella Bianca , Rizzano Gianvittorio 
Published: September 2023

AbstractThis paper investigates the cyclic behaviour of a novel typology of steel beam‐to‐column connection made by welding circular hollow section (CHS) columns and through I‐beams. In fact, due to the novelty of this configuration and the lack of design equations in the current codes, the application of this innovative solution is limited in common practice.The LASTEICON research project has recently investigated the main technological issues related to the manufacturing process and the joint's flexural resistance. Additionally, at the University of Salerno, studies on this joint began a few years ago, focusing on the characterisation of its bending response within the framework of the component method approach. Therefore, experimental, numerical and analytical activities have led to defining the joint's main components and proposing formulations able to predict the initial stiffness and the chord failure resistance. However, the proposed approach concerns the investigation of the monotonic behaviour of the joint, leaving the investigation of its cyclic response still unexplored.To fill this gap, the cyclic flexural response of connections with CHS columns and through I‐beams is assessed in this paper, starting from the knowledge of the monotonic and cyclic behaviour of the main components of the connection.