A rapid, simple and direct assay procedure based on first-derivative spectrophotometry, using a zero-crossing and peak-to-base measurement at 234 and 324 nm, respectively, has been developed for the specific determination of dextromethorphan HBr and bromhexine HCl in tablets. Calibration graphs were linear with the correlation coefficients of 0.9999 for both analytes. The limit of detections we...

There is a remarkable connection between the boundary structure of positive kinematic region and branch points integrated amplitudes in planar $\mathcal{N}=4$ SYM. A long standing question has been precisely how algebraic emerge from this picture. We use wall crossing scattering diagrams to systematically study regions associated with MHV amplitudes. The notion asymptotic chambers diagram natur...

PAGE INTRODUCTION .................................................................. I35 Coincidence of widely separated regions. , 138 Coincidence in the second chromosome. 146 Coincidence in the third chromosome. 148 Coincidence in other forms 148 The mechanism of crossing over 148 Triple crossing over .: .. I49 Maximum and minimum coincidence. I53 The distance between the breaking points in ...

A novel concept of a high luminosity hadron collider is proposed. This would be a typical application of an induction synchrotron being newly developed. Extremely long bunches, referred to as superbunches, are generated by a multibunch stacking method employing barrier buckets at the injection into the collider and are accelerated with a step voltage induced in the induction gaps. Superbunches ...

A drawing of a graph G is a mapping which assigns to each vertex a point of the plane and to each edge a simple continuous arc connecting the corresponding two points. The crossing number of G is the minimum number of crossing points in any drawing of G. We define two new parameters, as follows. The pairwise crossing number (resp. the odd-crossing number) of G is the minimum number of pairs of ...

A new sensitive, simple, rapid, accurate and precise method for simultaneous quantification of nebivolol HCl (NEB) and hydrochlorothiazide (HCT) in combined tablet dosage form has been developed. The method is based on the derivative spectrophotometric method at zero-crossing wavelengths. Two wavelengths 280nm (zero crossing point for NEB) and 272.2nm (zero crossing point for HCT) were selected...

The performance of an overlay Bluetooth and IEEE 802.11b (WiFi) network is considered in terms of packet latency, packet error rate and throughput, in the presence of a vertical handover procedure. The objective of the overlay network is to maximize the quality of service (QoS), giving to a mobile user the possibility to switch from a network to the other, with the so-called vertical handover. ...

Broomrapes (Orobanche spp.) are parasitic weeds and considered as a major limiting factor for the cultivation of various crops in many parts of the world. Due to the special biology of broomrape, including seed production, dispersal and longevity, the control of these species are often extremely difficult. Broomrape poses a serious threat to Iran’s agriculture; therefore exploring potential bio...