Callous-unemotional (CU) traits are characterized by lack of remorse and guilt, lack of empathy, and shallow and deficient emotions. A growing body of research has examined the association between child maltreatment and CU traits. However, empirical findings on this association are inconclusive.
View Article and Find Full Text PDFThe estimation of corrosion induced thickness loss is critical for evaluating the remaining strength of high-strength steel (HSS) structures, particularly due to their emerging applications in ocean platforms and coastal bridges. In this study, an ultrasonic approach based on multimodal guide waves is proposed to identify thickness loss induced by electrical accelerated corrosion (EAC) in Q690E HSS samples. Both pitting corrosion and uniform corrosion were observed in the samples during the EAC testing.
View Article and Find Full Text PDFMaterials (Basel)
April 2024
Ultra-high performance concrete (UHPC) with excellent durability has broad application prospects in improving the durability of reinforced concrete (RC) structures. To clarify the influence of freeze-thaw cycles on the axial compression performance of UHPC-RC composite columns, axial compression tests were carried out on composite columns with different cycles (0, 100, 200, 300 cycles) and stirrup spacing (35, 70, 105 mm). The results showed that the UHPC shell did not fall off when the composite column was destroyed, even in the freeze-thaw environment.
View Article and Find Full Text PDFIntimate partner violence (IPV) against pregnant women negatively impacts women's and infants' health. Yet inconsistent results have been found regarding whether pregnancy increases or decreases the risk of IPV. To answer this question, we systematically searched for studies that provided data on IPV against women before pregnancy, during pregnancy, and after childbirth.
View Article and Find Full Text PDFFatigue damage is a common cause of failure in welded structures, and it is often difficult to detect it in the early stage. While ultrasonic-based methods can effectively monitor crack propagation, it remains a significant challenge to indicate the initiation of cracks. In this study, a novel method is proposed to monitor the diffuse ultrasonic field affected by ratcheting strain and microcracks formed in welded joints during fatigue degradation.
View Article and Find Full Text PDFTo better understand the relationship between molecular structure and mechanofluorochromic characteristics, three carbazole-based N^O-chelated difluoroboron compounds (Cz-S-BF , Cz-PhNp-S-BF , and Cz-BNp-S-BF ) with different aryl substituents moieties were designed and synthesized. The mechanofluorochromic behaviours of Cz-S-BF (luminescence from bluish-green to yellowish-green, emission from 504 to 535 nm) without aryl substitution and Cz-PhNp-S-BF (luminescence from green and yellow, emission from 521 to 557 nm) with a phenyl-naphthalene group underwent reversible conversion using the grinding-fuming process. For Cz-BNp-S-BF this was not apparent due to the well coplanarity of the binaphthalene moiety.
View Article and Find Full Text PDFTrauma Violence Abuse
January 2024
Theoretical and empirical evidence has suggested that child maltreatment victimization is associated with rejection sensitivity. However, empirical evidence on this association is inconsistent. Therefore, this meta-analysis aimed to examine the overall association between child maltreatment and rejection sensitivity, and to investigate variables that may affect the strength of this association.
View Article and Find Full Text PDFEmerging evidence has documented the positive association between child maltreatment and both phenotypes of pathological narcissism (i.e., vulnerable and grandiose narcissism).
View Article and Find Full Text PDFBackground: An increasing number of research has documented the positive associations between psychological inflexibility (PI) and mental health problems (i.e., depressive, anxiety, and stress symptoms) during the COVID-19 pandemic.
View Article and Find Full Text PDFSelf-disgust is a negative self-conscious emotion that reflects disgust or revulsion directed toward oneself. A growing body of research has demonstrated a link between self-disgust, depression, and anxiety. However, the strength of these associations varied considerably across studies, suggesting the need to conduct a meta-analysis to produce a synthesized truer estimate.
View Article and Find Full Text PDFThis research will help to improve our understanding of the fracture properties of ECC at low temperatures (long-term low temperatures, freeze-thaw) and evaluate the safety properties of ECC under low-temperature conditions. Three levels of saturation (saturated, semi-saturated, and dry), four target temperatures (20, 0, -20, and -60 °C), and the effect of the coupled of the two on the mode I fracture properties of ECC were investigated. Then, we compared and analyzed the fracture properties of ECC loaded at 20 and -20 °C, after different freeze-thaw cycles (25, 50, 100 cycles), which were compared with saturated specimens without freeze-thaw at the four target temperatures to analyze the differences in low-temperature and freeze-thaw failure mechanisms.
View Article and Find Full Text PDFAn improved hydraulic servo structure testing machine has been used to conduct biaxial dynamic compression tests on eight types of engineered cementitious composites (ECC) with lateral pressure levels of 0, 0.125, 0.25, 0.
View Article and Find Full Text PDFOne-dimensional Zn-doped α-FeO nanowires have been controllably synthesized by using the pure pyrite as the source of Fe element through a two-step synthesis route, including the preparation of Fe source solution by a leaching process and the thermal conversion of the precursor solution into α-FeO nanowires by the hydrothermal and calcination process. The microstructure, morphology, and surface composition of the obtained products were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and X-ray photoelectron spectroscopy. It was found that the formation process of α-FeO is significantly influenced by the introduction of Zn.
View Article and Find Full Text PDFIt has been reported that negative emotional stimuli could facilitate conflict resolution. However, it remains unclear about whether and how the impact of negative emotional stimuli on conflict resolution varies depending on childhood maltreatment. To clarify this issue, seventy-nine subjects were required to perform an arrow Eriksen Flanker Task which was presented in the center of emotional pictures.
View Article and Find Full Text PDFTrauma Violence Abuse
January 2021
Background: Rejection sensitivity (RS) is a personality disposition characterized by oversensitivity to social rejection; individuals who are sensitive to social rejection tend to anxiously or angrily expect, readily perceive, and overreact to it. The associations between (a) RS and aggression and (b) RS and victimization have been studied in recent years. However, the strength of these associations varied considerably between studies.
View Article and Find Full Text PDFA new temperature stress test machine (TSTM) was developed to improve temperature control accuracy and efficiency. As there is no uniform standard for the threshold value of TSTM, quite different threshold values are used in the test, which results in the influences of the threshold value on the evaluation of thermal stresses and crack risk of concrete not being determined. To illustrate the importance of an appropriate threshold value, different threshold values were used to evaluate the influences on the thermal stresses and cracking resistance of concrete specimens under a complete restraint test with semi-adiabatic temperature development.
View Article and Find Full Text PDFRejection sensitivity is a personality disposition characterized by oversensitivity to social rejection. Using a three-level meta-analytic model, 75 studies were reviewed that examined associations between rejection sensitivity and five mental health outcomes: depression, anxiety, loneliness, borderline personality disorder, and body dysmorphic disorder. The results showed significant and moderate associations between rejection sensitivity and depression (pooled r=0.
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