bluuebunny/crossref_metadata_2025_split huggingface dataset:
Van der Waals Integrated LiNbO3/WS2 for High‐Performance UV–Vis–NIR Photodetection
Authors: Liang Xijie , Guan Heyuan , Luo Kaiwen , He Zhigang , Liang Aijie , Zhang Weina , Lin Qijing , Yang Zuoxin , Zhang Haoran , Xu Cheng , Xie Hanrong , Liu Fengli , Ma Fengkai , Yang Tiefeng , Lu Huihui 
Published: July 2023

AbstractLithium niobate (LN) is widely used in various optoelectronic systems due to its structural anisotropy and ferroelectric feature, which is one of the most essential platforms for next‐generation integrated optoelectronics. However, the insulating and optically transparent characteristics of LN have greatly limited the application in photodetection. Here, a high‐performance LN/WS2 based photodetector is achieved through a van der Waals integration strategy in which the pyroelectric property of LN and the moderate bandgap of WS2 are well combined. Upon light illumination, the light induced carriers in WS2 would increase and the pyroelectric charges of LN will cross the interfacial gap and asymmetrically inject into the WS2, creating an n−/n+ homojunction, thus improving the on‐state current. Under dark conditions, the sudden removal of the laser would introduce an instantaneous enhancement of polarization in the LN lattice, leading to an improved confinement on the remaining carriers in WS2, achieving a lower dark current. In this regard, the configurated device acquires a high on/off ratio more than 104 under zero bias, which represents the best among all the reported LN‐based photodetectors. This work realizes the complementary integration of 2D materials and ferroelectric LN and provides a feasible way for high‐performance photodetectors based on the LN platform.
Measurements on macrocells made of segmented reinforcement in concrete showing environmental impacts on corrosion of steel in concrete
Authors: Pruckner Franz 
Published: July 2023

AbstractCorrosion of steel in concrete can be characterized by measuring the galvanic current density when a macrocell is established. On nonpolarized steel, however, other electrochemical techniques like linear polarization resistance measurements may be used to characterize the electrochemical state of steel in concrete. On existing structures with their large dimensions and local differences in exposure conditions, local differences in the electrochemical state of the embedded reinforcement are established, leading to potential differences along the reinforcement and galvanic currents flowing. When it is possible to isolate anodic areas from the rest of the reinforcement, both galvanic current measurements, determination of polarization resistance on the separated anodic areas and the driving force between the anodic segments and the reinforcement are possible to obtain. In this work, this procedure is discussed and verified on a field structure on anodic areas caused by cracks in the concrete overlay and the results thereof are presented.
Hierarchically Porous SIFSIX‐3‐Ni/PAN Composite Beads for Carbon Dioxide Adsorption
Authors: Liu Xiangyang , Zhang Qi , Zhu He , Zhu Shiping 
Published: July 2023

AbstractThe increase in CO2 concentration in the atmosphere has led to global warming, which draws great attention all over the world. Adsorption is considered as an effective method for CO2 capture and stabilizing the increasing CO2 concentration. Metal–organic frameworks (MOFs) are promising materials for carbon capture. However, the direct use of MOF powders may lead to issues such as high pressure drop, pipe clogging, and handling difficulties in applications. Herein, a phase inversion strategy is reported to prepare SIFSIX‐3‐Ni@PAN composite beads. The prepared composites exhibit hierarchically porous structure with uniform MOF distribution inside the materials and good mechanical stability. The MOF content can be well controlled and composites with up to 70% loading are prepared. Finally, the obtained materials possess high CO2 capture capacity, even at low CO2 concentrations (1.19 mmol g−1 at 0.01 bar and 298 K).
Interior continuity, continuity up to the boundary, and Harnack's inequality for double‐phase elliptic equations with nonlogarithmic conditions
Authors: Hadzhy Oleksandr V. , Skrypnik Igor I. , Voitovych Mykhailo V. 
Published: July 2023

AbstractWe prove continuity and Harnack's inequality for bounded solutions to elliptic equations of the type
under the precise choice of μ.
Parallel Codazzi tensors with submanifold applications
Authors: Gruber Anthony 
Published: July 2023

AbstractA decomposition theorem is established for a class of closed Riemannian submanifolds immersed in a space form of the constant sectional curvature. In particular, it is shown that if M has nonnegative sectional curvature and admits a Codazzi tensor with “parallel mean curvature”, then M is locally isometric to a direct product of irreducible factors determined by the spectrum of that tensor. This decomposition is global when M is simply connected, and generalizes what is known for immersed submanifolds with parallel mean curvature vector.
Is brand reputation a banner for social marketing? A social enterprise product consumption perspective
Authors: Tsai Juin‐Ming , Lu Tzu‐En 
Published: July 2023

AbstractSocial enterprises (SEs) use various business models to pursue a balance between commercial profit and their social mission. This study uses quantitative and qualitative research methods to assess consumer purchasing decisions related to SEs and the impact of brand reputation on these decisions. Study 1 uses quantitative data to perform a multilevel analysis of consumer and corporate perspectives to examine the hypothesized relationships. We conduct study 2 to enable the robust generalization and further explanation of study 1's results by employing qualitative research. The results indicate that perceived contribution positively affects perceived behavioral control, while ethical self‐identity and product knowledge positively affect consumer attitudes. At the group level, brand reputation weakens the relationship between perceived contribution and perceived behavioral control; however, it strengthens the relationship between perceived risk and perceived behavioral control. These findings demonstrate that brand reputation is an important signal regarding SE products or services consumption and has significant implications for social marketing and brand strategy.
Fatigue performance of the aluminium‐magnesium/magnesium aluminate in‐situ composites synthesized through manganese dioxide and copper oxide reinforcement
Authors: Palanisamy C. , Raman R. , Olubambi P. A. 
Published: July 2023

AbstractAluminium‐2magnesium alloy castings find its application in engineering sectors where fatigue property is a key requirement. Few researches have been carried out in the past to improve its fatigue property by micro, nano reinforcements. However, the requirement of intended application has not yet attained and hence this current research study has been taken up to provide a solution. This research work focuses through a novel approach for synthesizing in‐situ magnesium aluminate particles in aluminium‐2magnesium alloy by the addition of manganese dioxide and copper oxide precursor addition (1 wt.%, 1.5 wt.% and 2 wt.%) during the casting process. Microstructure of fabricated composites were examined through field emission scanning electron microscopy to characterize the morphology and distribution of magnesium aluminate particles. The fabricated aluminium‐2magnesium/magnesium aluminate in‐situ composite specimens were subjected to low cycle fatigue testing at two different strain amplitudes of 0.3 % and 0.4 % and a frequency of 0.3 Hz. Among all composite specimens, specimens reinforced with 2 wt.% manganese dioxide and 2 wt.% copper oxide outperformed when tested in strain amplitudes of 0.3 % and 0.4 % respectively. Fractography studies were performed on failed composite specimens to study the modes of failure that resulted after fatigue testing.
Resistance spot weldability of Fe‐15.4Mn‐2.1Al‐1.2C twinning induced plasticity steel
Authors: Özen F. , Onar V. , Bulca M. , Aslanlar S. 
Published: July 2023

AbstractWelding of twinning induced plasticity steels contains problems due to high manganese constituent. Low manganese and high carbon included twinning induced plasticity steels have not studied throughly in the literature. In this study, resistance spot weldability of Fe‐15.4Mn‐2.1Al‐1.2C twinning induced plasticity steel was investigated. According to the results, interfacial, partial interfacial and pull‐out type failure modes were obtained in tensile‐shear tests. The maximum tensile‐shear load was measured as 17.7 kN with 125 J ⋅ Ω−1 heat input rate separated with pull‐out failure. Although the heat affected zone was narrow, it formed the weakest region of the joint. Cleavage facets which is a sign of brittle fracture were detected on the fracture surface that formed in heat affected zone. A sudden increase in hardness supports the brittleness of the heat affected zone. Also, grain coarsening reduced strength of the heat affected zone. A narrow partially melted zone was identified between heat affected zone and weld nugget. According to electron back scatter diffraction phase distribution analysis, formation of manganese carbides was detected in the heat affected zone.
Evolution behavior of δ phase in Cu12Sn2Ni alloy and the corresponding effects on alloy property
Authors: Jia Z. , Li C. , Zhang Z. , Xiao J. , Lu Y. , Ji J. , Zhao Y. T. 
Published: July 2023

AbstractWith the increase of tin content in tin bronze, the rise of δ phase made the strength, hardness of tin bronze increase and the ductility decrease sharply, that difficult to process. In this paper, the Cu12Sn2Ni alloy was prepared by centrifugal casting, the microstructure and phase formation before and after heat treatment were observed by x‐ray diffraction, scanning electron microscope, and transmission electron microscope. The results showed that the as‐cast sample microstructure was composed of equiaxed grains rather than coarse dendrites. centrifugal casting inhibits tin diffusion to form metastable phase β′‐Cu13.7Sn. The as‐cast sample had good deformability and its tensile strength and elongation were 381.9 MPa and 12.4 %, respectively, which are higher than the mechanical properties of gravity casting. The tensile strength and elongation of the sample after furnace cooling at 620 °C/8 min are 439.5 MPa and 24.4 %, respectively, the increase was 16.6 % and 85.07 %, compared with the as‐cast samples, due to the solid solution strengthening, the second phase strengthening and the homogenization of the microstructure.
Wear‐resistant/antifouling integrated coating protection technology of polyethylene cable
Authors: Wang Q. , Zeng J. , Shao K. , Li X. 
Published: July 2023

AbstractPolymer cables are being applied increasingly in fields such as deep‐sea mooring and cage culture. How to improve their wear resistance and prevent microbial adhesion is an urgent problem to be solved. In this work, the surface of the cable was treated by the polyvinylpyrrolidone cross‐linking method and the anchoring effect of one‐dimensional linear nanomaterials, which improved the adhesion of the water‐based coating. Meanwhile, the protective effect of the coating was improved through the addition of antifouling agents and wear‐resistant agents. The microstructure and intermolecular forces of the coating were characterized by scanning electron microscopy and infrared spectroscopy. The net hanging test results show that the surface‐treated cable exhibits better abrasion resistance and antifouling effects, and the shedding phenomenon is significantly improved.
Erosion wear response of ramie‐epoxy composites using artificial neural network integrated with Taguchi technique
Authors: Mahapatra S. K. , Satapathy A. 
Published: July 2023

AbstractThis paper aims on evaluating the erosion wear behavior of epoxy composites reinforced with ramie fibers. The possibility of reinforcing ramie fiber to improvise the wear resistance of epoxy is investigated in this study. Composites are fabricated by reinforcing multiple layers of woven ramie fiber mats into epoxy resin using conventional wet lay‐up technique and erosion wear trials are conducted using solid particle erosion test setup. Taguchi analysis is done to assess the relative significance of each of the factors influencing the erosion rate using L16 orthogonal array. The analysis reveals that the impact velocity followed by impingement angle are the most significant control factors affecting the erosion wear rate of ramie‐epoxy composites. Steady state erosion analysis is done to ascertain the effect of each of the significant factors while keeping other factors fixed. Further, an analytical and predictive model based on the principle of neural computation is used to predict the rate of erosion wear of the composites and the obtained results are compared with the experimental outcomes. The worn morphologies of the eroded surfaces of the composites are studied and analyzed to identify possible mechanisms causing wear.
Role of processing temperature on microstructure, mechanical properties and corrosion behavior of fine grained AZ31 magnesium alloy produced by groove pressing
Authors: Kumar E. Manoj , Reddy V. Mahidhar , Kumar K. Praveen , Reddy M. Srinivas , Ratna Sunil B. 
Published: July 2023

AbstractAZ31 magnesium alloy sheets were processed at 250 °C and 300 °C by groove pressing, a severe plastic deformation technique to achieve grain refinement. The influence of processing temperature on the evolution of microstructure, mechanical properties and corrosion behavior was studied. Groove pressing significantly reduced the grain size of the alloy from 46 μm to 6.5 μm at 250 °C processing temperature. With the higher processing temperature (300 °C), grain growth (11.4 μm) was observed for the alloy. Number of twins appeared in the groove pressed samples. Higher hardness and tensile strength were measured for the groove pressed samples processed at 250 °C without significant loss in the ductility as reflected from the % of elongation due to the grain refinement. Corrosion performance of the samples assessed by potentiodynamic polarization studies indicated increased corrosion resistance for both of the grove pressed samples. However, sample at 300 °C exhibited better corrosion resistance compared with the sample processed at 250 °C. This can be understood by considering the effect of higher processing temperature on reducing the crystal imperfections which alters the corrosion behavior.
Application of rice husk ash in brick aggregate concrete to improve the permeability and resistance against acid and sulfate attack
Authors: Bhowmik R. N. , Pal J. 
Published: July 2023

AbstractBrick‐aggregate‐concrete with a greater permeability is susceptible to decay at a faster rate under the action of acid and sulfate. This study tries to improve the durability of brick aggregate concrete by the addition of rice husk ash, which has been termed brick‐ash concrete in this paper. The permeability and sorptivity of stone‐aggregate‐concrete, brick‐aggregate concrete, and brick‐ash concrete samples with different percentages of rice husk ash and different water‐to‐binder ratios were investigated. The concrete samples were also exposed to 1.5 % hydrochloric acid and 5 % sodium sulfate along with periodic drying and wetting cycle and periodic observations in terms of compressive strength, weight loss, and ultrasonic pulse velocity test for 360 days. 5 % to 10 % rice husk ash can significantly improve the permeability and resistance to the harsh environment of brick aggregate concrete. Additionally, this study also presents the equations to predict the actual strength from ultrasonic pulse velocity values for the brick ash concrete specimen exposed to acid and sulfate environments.
Hsa_circ_0001740 mediates trophoblast cell function via regulating miR‐188‐3p/ARRDC3
Authors: Long Mei , Wang Shan 
Published: July 2023

AbstractPreeclampsia is an obstetric disorder and remains the leading contributor to maternal and fetal morbidity and mortality. This study was designed to explore the role of hsa_circ_0001740 in preeclampsia as well as its underlying mechanism. Real‐time quantitative polymerase chain reaction was performed to examine hsa_circ_0001740 and miR‐188‐3p levels in trophoblast cell line HTR‐8/SVneo. The proliferation, migration, invasion, and apoptosis of HTR‐8/SVneo cells were detected using cell counting kit‐8, colony formation, wound healing, transwell, and terminal‐deoxynucleoitidyl transferase mediated nick end labeling assays, respectively. The expression of apoptosis‐ and Hippo signaling‐related proteins were assessed by western blot. Moreover, the binding relationship between hsa_circ_0001740 and miR‐188‐3p, miR‐188‐3p and ARRDC3 were verified by luciferase report assay. The results showed that hsa_circ_001740 overexpression inhibited the proliferation, migration, and invasion, and promoted apoptosis of HTR‐8/SVneo cells. Hsa_circ_0001740 was verified to bind to miR‐188‐3p, and ARRDC3 was demonstrated to be a target of miR‐188‐3p. miR‐188‐3p overexpression partially counteracted the suppressive effects of hsa_circ_001740 overexpression on the proliferation, migration, and invasion of HTR‐8/SVneo cells. What's more, ARRDC3 expression was upregulated by hsa_circ_001740‐overexpression but was downregulated by miR‐188‐3p overexpression. Hsa_circ_001740/miR‐188‐3p also mediated Hippo signaling. To summarize, hsa_circ_0001740 could maintain trophoblast cell function via downregulating miR‐188‐3p, providing a potential biomarker for the diagnosis and treatment of preeclampsia.
Beyond yellow flags: The Big‐Five personality traits and psychologically informed musculoskeletal rehabilitation
Authors: Williams Matthew K. , Waite Lennie , Van Wyngaarden Joshua J. , Meyer Andrew R. , Koppenhaver Shane L. 
Published: July 2023

AbstractBackgroundPsychosocial variables are known to play an important role in musculoskeletal pain. Recent efforts incorporating psychological theory into rehabilitative medicine, as part of patient‐centred care or psychologically informed physical therapy, have gained broader acceptance. The fear‐avoidance model is the dominant psychosocial model and has introduced a variety of phenomena which assess psychological distress (i.e., yellow flags). Yellow flags, such as fear, anxiety and catastrophizing, are useful concepts for musculoskeletal providers but reflect a narrow range of psychological responses to pain.ObjectiveClinicians lack a more comprehensive framework to understand psychological profiles of each patient and provide individualised care. This narrative review presents the case for applying personality psychology and the Big‐Five trait model (extraversion, agreeableness, conscientiousness, neuroticism and openness to experience) to musculoskeletal medicine. These traits have strong associations with various health outcomes and provide a robust framework to understand patient emotion, motivation, cognition and behaviour.Key ResultsHigh conscientiousness is associated with positive health outcomes and health promoting behaviours. High neuroticism with low conscientiousness increases the odds of negative health outcomes. Extraversion, agreeableness and openness have less direct effects but have positive correlations with important health behaviours, including active coping, positive affect, rehabilitation compliance, social connection and education level.Clinical ApplicationThe Big‐Five model offers an evidence‐based way for MSK providers to better understand the personality of their patients and how it relates to health. These traits offer the potential for additional prognostic factors, tailored treatments and psychological intervention.
Perinatal outcomes in women with class IV obesity compared to women in the normal or overweight body mass index categories: A population‐based cohort study in Qatar
Authors: Minisha Fathima , Khenyab Najat , Abu Yaqoub Salwa , Al Obaidly Sawsan , AlQubaisi Mai , Salama Husam , Olukade Tawa , Pallivalappil Abdul Rouf , Al Dewik Nader , Al Rifai Hilal , Farrell Thomas 
Published: July 2023

AbstractBackgroundThe prevalence of childhood and adult obesity is rising exponentially worldwide. Class IV obesity (body mass index, BMI ≥50 kg/m2) is associated with a higher risk of adverse perinatal outcomes. This study compared these outcomes between women with class IV obesity and women in the normal or overweight categories during pregnancy.MethodsA retrospective cohort study was performed in Qatar, including women having singleton live births beyond 24 weeks of gestation, classified into two class IV obesity and normal/overweight (BMI between 18.5 and 30.0 kg/m2). The outcome measures included the mode of delivery, development of gestational diabetes and hypertension, fetal macrosomia, small for date baby, preterm birth and neonatal morbidity. Adjusted odds ratios (aOR) with 95% confidence intervals (95% CI) were determined using multivariable logistic regression models.ResultsA total of 247 women with class IV obesity were compared with 6797 normal/overweight women. Adjusted analysis showed that women with class IV obesity had 3.2 times higher odds of cesarean delivery (aOR: 3.19, CI: 2.26–4.50), 3.4 times higher odds of gestational diabetes (aOR: 3.39, CI: 2.55–4.50), 4.2 times higher odds of gestational hypertension (aOR: 4.18, CI: 2.45–7.13) and neonatal morbidity (aOR: 4.27, CI: 3.01–6.05), and 6.5 times higher odds of macrosomia (aOR 6.48, CI 4.22–9.99).ConclusionsClass IV obesity is associated with more adverse perinatal outcomes compared with the normal or overweight BMI categories. The study results emphasized the need for specialized antenatal obesity clinics to address the associated risks and reduce complications.
Using foreign aid contracts to pursue participatory approaches to development within large foreign aid agencies
Authors: Harris Amy Beck 
Published: July 2023

AbstractParticipatory development has become, ‘development orthodoxy’, receiving widespread proclamations of support from foreign aid agencies. Participatory development engages international development beneficiaries in making decisions about project activity selection and design. Yet, many foreign aid donors deliver project assistance through top‐down, highly controlled systems that may constrain the flexibility needed to delegate decision‐making power to project beneficiaries. This paper explores whether and under which conditions these foreign aid agencies delegate decision‐making power to project beneficiaries, focusing on the key mechanism for delivering foreign aid: government contracts. The analysis relies on a novel dataset of U.S. Agency for International Development (USAID) projects that incorporates contract specifications for beneficiary decision‐making during project implementation. Despite an expectation that delivery system constraints would prohibitively exclude contract specifications for beneficiary decision‐making, donors are found to commonly use contracts to delegate decision‐making power to beneficiaries, but within pre‐determined parameters. The results suggest that USAID is using contract specifications to engage in bounded delegation, providing some decision‐making power to beneficiaries, but using boundaries to ensure the right ‘fit’ with institutional goals and constraints. By focusing on contract specifications and variation within these specifications, this study identifies widespread use of a ‘middle ground’ in how donors motivate participatory development.