Open quantum systems theory of ultraweak ultraviolet photon emissions: Revisiting Gurwitsch's onion experiment as a prototype for quantum biology.

A century ago it was discovered that metabolic processes in living cells emit a spectrum of very low intensity radiation. This was based on observations that radiant energy from proliferating cells can amplify the rate of cell division in other nearby cellular life. Although metabolic radiation is now thoroughly documented in research on ultraweak photon emissions (UPE), the original finding that UPE can enhance mitogenesis remains controversial.

How LGBTQ+ Young Adults Navigate Personal Risk in App-Based Hookups: The Safety Spectrum Theory.

Research on hooking up is rife with examinations of risky sexual health practices among LGBTQ+ young adults; yet, little has been written about the personal safety practices for this population. This omission is notable because safety practices can enhance the notable positive outcomes related to hooking up. Drawing on one-on-one interviews with 50 LGBTQ+ young adults (20 cismen, 20 ciswomen, two transmen, and eight others) in British Columbia, California, and Connecticut, we developed the safety spectrum theory, which used a spectral measurement to assess how LGBTQ+ young adults negotiate safety practices and implement safety rules.

Ultraviolet Superradiance from Mega-Networks of Tryptophan in Biological Architectures.

Networks of tryptophan (Trp)─an aromatic amino acid with strong fluorescence response─are ubiquitous in biological systems, forming diverse architectures in transmembrane proteins, cytoskeletal filaments, subneuronal elements, photoreceptor complexes, virion capsids, and other cellular structures. We analyze the cooperative effects induced by ultraviolet (UV) excitation of several biologically relevant Trp mega-networks, thus giving insights into novel mechanisms for cellular signaling and control. Our theoretical analysis in the single-excitation manifold predicts the formation of strongly superradiant states due to collective interactions among organized arrangements of up to >10 Trp UV-excited transition dipoles in microtubule architectures, which leads to an enhancement of the fluorescence quantum yield (QY) that is confirmed by our experiments.

Sexual Minority Youth Reporting SOGIE-Based Harassment to Adults at School: The Roles of Experienced Harassment, Outness, Safety, and Adult Support at School.

Despite a proliferation of bullying prevention programs in recent time, limited work has investigated support-seeking behaviors in response to elevated bullying levels among sexual minority youth (SMY). To address this gap, the current study examined how harassment targeting SOGIE (sexual orientation, gender identity, and gender expression), sexual identity outness, school safety, and perceptions of teacher/staff support were associated with SMY talking to an adult at school about harassment. A large contemporary national sample of SMY (N = 5538) between the ages 13-18 (M = 15.

Radical Scavenging Could Answer the Challenge Posed by Electron-Electron Dipolar Interactions in the Cryptochrome Compass Model.

Many birds are endowed with a visual magnetic sense that may exploit magnetosensitive radical recombination processes in the protein cryptochrome. In this widely accepted but unproven model, geomagnetic sensitivity is suggested to arise from variations in the recombination rate of a pair of radicals, whose unpaired electron spins undergo coherent singlet-triplet interconversion in the geomagnetic field by coupling to nuclear spins via hyperfine interactions. However, simulations of this conventional radical pair mechanism (RPM) predicted only tiny magnetosensitivities for realistic conditions because the RPM's directional sensitivity is strongly suppressed by the intrinsic electron-electron dipolar (EED) interactions, casting doubt on its viability as a magnetic sensor.