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Nonsuicidal self-injury (NSSI) is frequently encountered in adolescents, but its predictive value for suicidality or other clinical characteristics is challenging due to its heterogeneous nature. This study used latent class analysis to identify subgroups of NSSI and compared these on sociodemographic characteristics, adverse outcomes and protective factors. The study included 966 high-risk adolescents, Mage 14.9 y, SD 0.9 y, 51.8% female. Four classes emerged: (1) "Low NSSI–Low suicidality", (2) "Moderate NSSI-Low suicidality", (3) "Moderate NSSI-High suicidality", and (4) "High NSSI-High suicidality". Girls predominated in the high suicidality classes. Generally, Class 4 had the poorest outcomes: more internalizing and externalizing problems, less social support from friends and families and worst self-esteem. These findings emphasize the need for interventions tailored to specific phenotypes of adolescents engaging in NSSI. [ABSTRACT FROM AUTHOR]

Due to their non-trivial topology, skyrmions describe deflected trajectories, which hinders their straight propagation in nanotracks and can lead to their annihilation at the track edges. This deflection is caused by a gyrotropic force proportional to the topological charge and the angular momentum density of the host film. In this article, we present clear evidence of the reversal of the topological deflection angle of skyrmions with the sign of angular momentum density. We measured the skyrmion trajectories across the angular momentum compensation temperature ( T AC ) in GdCo thin films, a rare earth/transition metal ferrimagnetic alloy. The sample composition was used to engineer the skyrmion stability below and above the T AC . A refined comparison of their dynamical properties evidenced a reversal of the skyrmions deflection angle with the total angular momentum density. This reversal is a clear demonstration of the possibility of tuning the skyrmion deflection angle in ferrimagnetic materials and paves the way for deflection-free skyrmion devices. [ABSTRACT FROM AUTHOR]

iMaintenance stands for integrated, intelligent and immediate maintenance. It integrates various maintenance functions and connects these to all devices using advanced communication technologies. The main challenge is to integrate the disparate systems and capabilities developed under current eMaintenance models and to make them immediately accessible through intelligent computing technologies. iMaintenance systems are computer-based, able to evolve with the system that they monitor and control and they can be embedded in the system's components, providing the ability to integrate new functionality with no downtime. This article will show how iMaintenance systems can provide decision-making support, thereby going beyond merely connecting various maintenance systems. [ABSTRACT FROM AUTHOR]

In order to confirm the genetic character of porphyria cutanea tarda (PCT), the quantitative and qualitative porphyrin excretion from 56 unrelated PCT patients and 259 relatives was analyzed by a sensitive fluorimetric thin-layer chromatographic technique. Porphyrin excretion abnormalities were observed in 111 (35.24%) of the 315 subjects studied. Of the 259 relatives, 55 (21.24%) suffered from manifest (24 cases) or subclinical (31 cases) PCT. The relatives from the older generation or a generation similar to the propositi were more frequently affected than those from a younger generation. A clear family incidence was observed in 32 families, while PCT was apparently limited to the propositi in the remaining 24. It is discussed whether these latter families correspond to the so-called 'sporadic' type of PCT or include porphyric gene carriers lacking biochemical expression of the disease. While the measurements of the activity of the defective enzyme (uroporphyrinogen decarboxylase) for the genetic research of PCT turned out to be impracticable in hepatic tissue and contradictory in erythrocytes, our study confirms that the familial character of this disease may be revealed by the chromatographic analysis of the porphyrin excretion pattern. [ABSTRACT FROM AUTHOR]

One fundamental obstacle to efficient ferromagnetic spintronics is magnetic precession, which intrinsically limits the dynamics of magnetic textures. We experimentally demonstrate that this precession vanishes when the net angular momentum is compensated in domain walls driven by spin–orbit torque in a ferrimagnetic GdFeCo/Pt track. We use transverse in-plane fields to provide a robust and parameter-free measurement of the domain wall internal magnetisation angle, demonstrating that, at the angular compensation, the DW tilt is zero, and thus the magnetic precession that caused it is suppressed. Our results highlight the mechanism of faster and more efficient dynamics in materials with multiple spin lattices and vanishing net angular momentum, promising for high-speed, low-power spintronic applications. [ABSTRACT FROM AUTHOR]