We give predictions for the ratio RQ(x,Q2)=FLQ(x,Q2)/F2Q(x,Q2) at small values of Bjorken variable x in first three orders perturbation theory. show an approximate x-independence RQ(x,Q2) low and non-large Q2 (Q2 < 8--10 m2Q), irrespectively on gluon density a proton used calculations. This observation could be useful subsequent phenomenological studies heavy flavor production future lepton-had...

Friction and wear tests were performed on AISI 1045 steel specimens with different initial roughness parameters, machined by a creep-feed dry grinding process, to study the friction and wear behavior on a pin-on-disc tester in dry sliding conditions. Average surface roughness (Ra), root mean square (Rq), skewness (Rsk) and kurtosis (Rku) were involved in order to analyse the influence of the fr...

The methanol-burning lung model has been used as a technique for generating a predictable ratio of carbon dioxide production (VCO2) to oxygen consumption (VO2) or respiratory quotient (RQ). Although an accurate RQ can be generated, quantitatively predictable and adjustable VO2 and VCO2 cannot be generated. We describe a new burner device in which the combustion rate of methanol is always equal ...

Skin status of produce is important in determining fruit quality. Sensory evaluation is often used to express this characteristic. A new method, atomic force microscopy (AFM), was proposed to denote the changes of skin status. Arithmetic roughness (Ra) and root mean square roughness (Rq) of ‘Jinxiu’ yellow peach (prunus persicu L. Batsch.) were analysed by AFM. The Ra and Rq values increased wi...

Information on the respiration rate and the low O2 limit (LOL) is important for optimization of packaging and storage systems for fresh fruit and vegetables. In this study, a small and flexible sensor-based respirometer was developed for real-time determination of the respiration rate, respiratory quotient (RQ), and LOL of fresh produce. The respirometer consisted of a wide mouth 1-L glass jar ...

Let Q : R-R be even, nonnegative and continuous, Q0 be continuous, Q040 in ð0;NÞ; and let Q00 be continuous in ð0;NÞ: Furthermore, Q satisfies further conditions. We consider a certain generalized Freud-type weight W 2 rQðxÞ 1⁄4 jxj 2r expð 2QðxÞÞ: In previous paper (J. Approx. Theory 121 (2003) 13) we studied the properties of orthonormal polynomials fPnðW 2 rQ; xÞg N n1⁄40 with the generalize...

This paper presents the RQ (Reparameterized Quaternion) parameterization for three degree of freedom (DOF) rotations as an alternative to quaternions for the applications of differential control and dynamic simulation. Because it requires just three Euclidean parameters instead of the four non-Euclidean parameters of quaternions, RQ is more efficient, less difficult to incorporate into large sy...

The limitation of polymerase chain reaction (PCR) in diagnosis of lower respiratory tract infections (LRTIs) caused by Streptococcus pneumoniae, Haemophilus influenzae, and Moraxella catarrhalis has been a distinguishing colonization from infection. We assess here the usefulness of real-time quantitative PCR (RQ-PCR) performed on lower respiratory tract samples to overcome this problem. Consecu...