We report on time-resolved linear and nonlinear terahertz spectroscopy of the two-band superconductor MgB$_2$ with superconducting transition temperature $T_c \approx 36$ K. Third-harmonic generation (THG) is observed below $T_c$ by driving system intense narrowband THz pulses. For pump-pulse frequencies $f=$ 0.3, 0.4, 0.5 THz, temperature-dependent evolution THG signals exhibits a resonance ma...

Petunia inflata S-locus F-box (Pi SLF) is thought to function as a typical F-box protein in ubiquitin-mediated protein degradation and, along with Skp1, Cullin-1, and Rbx1, could compose an SCF complex mediating the degradation of nonself S-RNase but not self S-RNase. We isolated three P. inflata Skp1s (Pi SK1, -2, and -3), two Cullin-1s (Pi CUL1-C and -G), and an Rbx1 (Pi RBX1) cDNAs and found...

background: fungal corneal ulcer is the most dangerous and challenging type of infective keratitis.  since most of the ophthalmic antifungal drops are scarce and expensive in developing countries, attempts have been made to study fungicidal property of some readily available antiseptic agents as a substitute.  povidone iodine (pi) and chlorhexidine gluconate (chx) has been postulated to be effe...

The ground and low-lying excited states of the pyrimidine nucleo bases uracil, thymine, and 1-methylthymine have been characterized using ab initio coupled-cluster with approximate doubles (CC2) and a combination of density functional theory (DFT) and semiempirical multireference configuration interaction (MRCI) methods. Intersystem crossing rate constants have been determined perturbationally ...

INTRODUCTION Response to antiretroviral therapy (ART) among individuals infected with HIV-2 is poorly described. We compared the immunological response among patients treated with three nucleoside reverse-transcriptase inhibitors (NRTIs) to boosted protease inhibitor (PI) and unboosted PI-based regimens in West Africa. METHODS This prospective cohort study enrolled treatment-naïve HIV-2-infec...

For integers $$0 < r \le t$$ , let the function $$D_{r,t}(n)$$ denote number of parts among all partitions n into distinct that are congruent to modulo t. We prove asymptotic formula $$\begin{aligned} D_{r,t}(n) \sim \dfrac{3^{\frac{1}{4}} e^{\pi \sqrt{\frac{n}{3}}}}{2\pi t n^{\frac{1}{4}}} \left( \log (2) + \dfrac{\sqrt{3} (2)}{8\pi } - \dfrac{\pi }{4\sqrt{3}} \dfrac{t}{2} \right) n^{- \frac{1...

In this paper, we focus on the approximation of smooth functions \(f: [-\pi , \pi ] \rightarrow {\mathbb {C}}\), up to an unresolvable global phase ambiguity, from a finite set Short Time Fourier Transform (STFT) magnitude (i.e., spectrogram) measurements. Two algorithms are developed for approximately inverting such measurements, each with theoretical error guarantees establishing their correc...