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The present study directly compared three perspectives of suicidality: Interpersonal Theory of Suicide (IPTS), Hopelessness Theory, and a perspective emphasizing emotion dysregulation. 219 adults seeking outpatient psychological services completed questionnaires during intake between November 2015 and February 2019. Patients were included if they completed surveys related to thwarted belongingness (TB), perceived burdensomeness (PB), hopelessness, depressive symptoms, negative affect, and Borderline Personality Disorder (BPD) symptoms. Analyses tested the ability of TB, PB, depressive symptoms, hopelessness, and emotion dysregulation to relate to total scores on Beck Scale for Suicide Ideation. We employed Pearson's correlations and linear regressions to investigate these relations. Constructs related to emotion dysregulation—negative affect (r = 0.161, p <.05) and Borderline Personality Disorder symptoms (r = 0.284, p <.01)—were significantly correlated with suicidal ideation, as were those relevant to Hopelessness Theory—depressive symptoms (r = 0.46, p <.01) and hopelessness (r = 0.45, p <.01)— and IPTS—TB (r = 0.36, p <.01) and PB (r = 0.43, p <.01). Notably the combinations of constructs as proposed by theories were significantly associated with suicidal ideation, but did not improve upon single constructs. This indicated that theoretically relevant constructs alone were strongly associated with suicidal ideation, but were not bested by interactions. This project compared constructs relevant to three theories of suicidality among a sample of treatment seeking outpatients. Findings indicated that suicidal ideation assessment was similarly informed by Hopelessness Theory and IPTS, and to a lesser degree emotion dysregulation. The cross sectional nature of the data and the reliance upon self-report measures limit the inferences that can be made. [ABSTRACT FROM AUTHOR]

The nonlinear transmission and the excited-state absorption spectra of three fluorene derivatives exhibiting large two-photon absorptivity were measured by the third harmonic of a picosecond Nd:YAG laser. We analyzed their capability for exhibiting stimulated emission in polar solvents and found that asymmetrical fluorene compounds with a diphenylamino substituent exhibited large Stokes shifts (~8000 [cm.sup.-1]), high quantum yields (~0.9 - 1.0), and no optical gain over their entire fluorescence spectral region. In contrast, a symmetrical fluorene derivative with vinylphenylbenzothiazole substituents in positions 2 and 7 underwent lasing under one-photon excitation by use of picosecond pulsed irradiation. OCIS codes: 140.3380, 140.4480, 160.3380, 160.4890, 190.4710.

High-order multiphoton excitation processes are becoming a reality for fluorescence imaging and phototherapy treatment because they afford minimization of scattered light losses and a reduction of unwanted linear absorption in the living organism transparency window, making them less susceptible to photodamage, while improving the irradiation penetration depth and spatial resolution. We report the four-photon-excited fluorescence emission of (7-benzothiazol-2-yl-9,-didecylfluoren-2-yl)diphenylamine in hexane and its four-photon absorption cross section [[sigma].sub.4]' = 8.1 x [10.sup.-109] [cm.sup.8] [s.sup.3] [photon.sup.-3] for the transition [S.sub.0] [right arrow] [S.sub.1] when excited at 1600 nm with a tunable optical parametric generator (OPG) pumped by picosecond laser pulses. When pumped at 1200 nm, three-photon absorption was observed, corresponding to the same transition. OCIS codes: 190.4180, 300.6410, 160.2540, 300.2530.

Suicide is the tenth leading cause of death in America. Particularly at risk, Veterans are 1.5 times more likely to die by suicide than non-Veterans, and the suicide rate among service members has risen over the last decade. In the present study, we (1) assessed risk factors for suicidal ideation, suicide attempts, and suicide death within and between Veterans and service members, (2) identified the most commonly studied and (3) the strongest risk factors for suicide-related outcomes among Veterans and service members, and (4) compared overall and risk factor-specific meta-analytic prediction of suicide-related outcomes in Veterans and service members, as determined in the present meta-analysis, to that of the general population. Authors harvested longitudinal effects predicting suicidal ideation, suicide attempts, or suicide deaths in Veterans or service members until May 1, 2020. Traumatic Brain Injury, substance/alcohol use disorders, prior Self-Injurious Thoughts and Behavior, PTSD, and depressive symptoms were among the most commonly studied risk factors. Anger/aggression was particularly strong risk factors, providing a source for future study and intervention efforts. When combined, risk factors conferred similar risk for suicide attempts and suicide death among Veterans, service members, and the general population. However, when analyzing p-values, factors conferred significantly more risk of suicidal ideation among Veterans and service members as compared to the general population. That is, p-values for risk factors were lower in an absolute sense but not necessarily to a statistically significant degree. [ABSTRACT FROM AUTHOR]

A method using the Ullmann amination reaction that enabled access to some fluorine analogues derived from synthetic intermediates was developed. This resulted in effective synthesis of key intermediates enabling new two-photon absorbing chromophores from fluorine.

We discuss computational language analysis as it pertains to suicide prevention research, with an emphasis on providing non‐technologists with an understanding of key issues and, equally important, considering its relation to the broader enterprise of suicide prevention. Our emphasis here is on naturally occurring language in social media, motivated by its non‐intrusive ability to yield high‐value information that in the past has been largely unavailable to clinicians. [ABSTRACT FROM AUTHOR]