This note deals with the following problem: Let A be an n X n Hermitian matrix, and Q and 0 be two n X rn (n > m > 1) matrices both with orthonormal column vectors. How do the eigenvalues of the m X m Hermitian matrix Q”AQ differ from those of the m X m Hermitian matrix QHAQ? We give a positive answer to one of the unsolved problems raised recently by Sun. In what follows, we will consider the ...

Marine invertebrates are capable of synthesizing bioactive compounds, which may be beneficial to human health. The aim of this study was to evaluate the antioxidant, hemolytic, antimicrobial and cytotoxic activities of crude extract (70% EtOH), and dichloromethane (DCM), ethyl acetate (EtOAc), and aqueous (Aq) fractions of the marine zoanthid Palythoa caribaeorum. The phenolic compound contents...

[1] We re-assess the constraints that estimates of the global ocean excess radiocarbon inventory (I) place on air-sea gas exchange. We find that the gas exchange scaling parameter aq cannot be constrained by I E alone. Non-negligible biases in different global wind speed data sets require a careful adaptation of aq to the wind field chosen. Furthermore, aq depends on the spatial and temporal re...

Self-assembled monolayers (SAMs) of 1-mercaptoanthraquinone (AQSC0), bis(3-(1-anthraquinonylthio)propyl)disulfide (AQSC3) and bis(6-(1-anthraquinononylthio)hexyl)disulfide (AQSC6), on a gold electrode were investigated by cyclic voltammetry and surface enhanced infrared absorption spectroscopy (SEIRAS). A redox wave was observed for all the anthraquinone (AQ) derivatives and the redox potential...

Anaerobic digestion of high-nitrogen wastes such as animal manure can be inhibited by high concentrations of un-ionized ammonia, NH(3) (aq). Understanding the toxicity of NH(3) (aq) to anaerobic digestion requires a method for determining its concentration. Previous work on ammonia toxicity in anaerobic digesters has utilized a simple equilibrium calculation for estimating NH(3) (aq) concentrat...

BACKGROUND Phenolic compounds combine antioxidant and hypocholesterolemic activities and, consequently, are expected to prevent or minimize cardiometabolic risk. METHODS To evaluate the effect of an aqueous extract (AQ) and non-esterified phenolic fraction (NEPF) from rosemary on oxidative stress in diet-induced hypercholesterolemia, 48 male 4-week old Wistar rats were divided into 6 groups: ...

Altered immune functioning has been demonstrated in individuals with autism spectrum disorder (ASD). The current study explores the relationship between perceived immune functioning and experiencing ASD traits in healthy young adults. N = 410 students from Utrecht University completed a survey on immune functioning and autistic traits. In addition to a 1-item perceived immune functioning rating...

Penelitian ini bertujuan untuk mengetahui pengaruh model pembelajaran Open Ended terhadap kemampuan berpikir kreatif matematis siswa, ditinjau dari Adversity Quotient (AQ). Populasi pada penelitian adalah seluruh siswa kelas XI SMA Gajah Mada Bandar Lampung. Sampel IPA 1 sebagai eksperimen, dan 2 kontrol. Jenis yang digunakan Quasy Experimental Design dengan teknik pengambilan sampel Cluster Ra...

Wild pigs (Sus scrofa) are a destructive invasive species that cause extensive damage to agriculture throughout many regions of the world. In particular wild corn more than any other crop, and most occurs immediately after planting when excavate consume planted seeds. We evaluated whether anthraquinone (AQ), repellent, could be useful for protecting seed from consumption by pigs. Specifically, ...

Canonical quantization (CQ) is built around [Q, P] = ih1l , while affine (AQ) [Q,D] ihQ, where D ≡ (PQ +QP) / 2 . The basic CQ operators must fit -∞ P, Q P ≠ 0 < ∞ AQ can also be the key to quantum gravity, as our simple outline demonstrates.