We consider a single particle which is bound by a central potential and obeys the Dirac equation in d dimensions. We first apply the asymptotic iteration method to recover the known exact solutions for the pure Coulomb case. For a screened-Coulomb potential and for a Coulomb plus linear potential with linear scalar confinement, the method is used to obtain accurate approximate solutions for bot...

Recently an instantaneous approximation to the Bethe–Salpeter formalism for the analysis of bound states in quantum field theory has been proposed which retains, in contrast to the Salpeter equation, as far as possible the exact propagators of the bound-state constituents, extracted nonperturbatively from Dyson–Schwinger equations or lattice gauge theory. The implications of this improvement fo...

An extensive sand flux monitoring network was installed on the dry lake bed at Owens Lake, California to determine hourly PM-10 emissions. The network consisted of 135 co-located electronic and passive sand flux samplers covering 135 square kilometers of the lake bed. The network measured the hourly sand flux at each site for 30 months. Previous researchers found that PM-10 emissions due to win...

BACKGROUND Pain management is a critical but complex issue for the relief of acute pain, particularly for postoperative pain and severe pain in cancer patients. It also plays important roles in promoting quality of care. The introduction of pain management decision support systems (PM-DSS) is considered a potential solution for addressing the complex problems encountered in pain management. Thi...

OBJECTIVE Despite known benefits of patient-perceived collaborative goal setting, we have a limited ability to monitor this process in practice. We developed the Patient Measure of Collaborative Goal Setting (PM-CGS) to evaluate the use of collaborative goal setting from the patient's perspective. RESEARCH DESIGN AND METHODS A random sample of 400 patients aged 40 years or older, receiving di...

We study the focusing NLS equation in $\mathbb{R}^N$ mass-supercritical and energy-subcritical (or intercritical ) regime, with $H^1$ data at mass-energy threshold $\mathcal{ME}(u\_0)=\mathcal{ME}(Q)$, where $Q$ is ground state. Previously, Duyckaerts–Merle studied behavior of solutions $H^1$-critical case, dimensions $N = 3, 4, 5$, later generalized by Li–Zhang for higher dimensions. In Duycka...

INTRODUCTION Adulthood male hypogonadism (HG) is the most common form of HG. Although testosterone (T) replacement therapy (TRT) is the most common way of treating HG, other options are available depending on patient's needs and expectations. AREAS COVERED We analyze alternative options to TRT as a medical intervention in treating HG. Gonadotropin (Gn) therapy is the treatment of choice in me...