We develop and prove sound a concurrent separation logic for Pthreads-style barriers. Although Pthreads barriers are widely used in systems, and separation logic is widely used for verification, there has not been any effort to combine the two. Unlike locks and critical sections, Pthreads barriers enable simultaneous resource redistribution between multiple threads and are inherently stateful, ...

â a model is developed for separation of multicomponent gas mixtures in a countercurrent hollow fiber membrane module. while the model’s solution in countercurrent module usually involves in a time consuming iterative procedure, a proper initial guess is proposed for beginning the calculation and a simple procedure is introduced for correcting the guesses, hereby the cpu time is decreased ess...

Abstract This work exhibits the very first experimentally determined cross sections for 26 Al and 41 Ca as proton-induced spallation products of metallic vanadium targets. Additionally, authors describe a radiochemical separation from matrix present theoretically calculated cross-section values reference experimental ones.

We study the hard color dipole-nucleon cross section within perturbative QCD and discuss its relation to observables in diffractive leptoproduction of heavy quarkonium. The dipole cross section calculated with the unintegrated gluon density of the nucleon substantially differs from the well-known perturbative form σdip ∼ b 2 for b > 0.3fm, where b is the transverse separation of the dipole. We ...

We examine a numerical technique developed to simulate unsteady dispersion and diffusion in coated tubes of arbitrary but axially-constant cross-section. The method is validated against analytical asymptotic solutions produced for tubes of circular section, then applied to the study of dispersion in equivalent tubes of square section, coated on one, two, three or four walls, and in a family of ...

We propose to use the High Momentum Spectrometer of Hall C combined with a PbWO4 electromagnetic calorimeter in order to perform high precision measurements of the Deeply Virtual Compton Scattering (DVCS) cross section. A wide range of kinematics accessible with an 11 GeV electron beam off an unpolarized proton target will be covered. The azimuthal, energy and helicity dependences of the cross ...

An internally heat integrated distillation column, HIDiC, offers the maximum energy saving potential for difficult and energy intensive separations, such as propylenepropane and the like, which are carried out in tray columns. A novel type of HIDiC was developed by TUDelft, namely a concentric distillation column in which a low pressure annular stripping section is configured around a high pres...

Background: Carbetocin and oxytocin are indicated for the prevention of postpartum haemorrhage (PPH) due to uterine atony. is a newer analogue with longer half life more heat stable. PPH can be effectively reduced by prophylactic use uterotonics. The aims present study were compare effects carbetocin in separation placenta, controlling blood loss additional uterotonic needed caesarean section (...

A method is proposed for the experimental measurement of neutron separation energies for nuclei far from stability. The procedure is based on determining cross sections for the production of nuclei, by projectile fragmentation, for which only protons are removed but for which the number of neutrons is left unchanged. A simple Abrasion-Ablation analysis leads to a cross section prediction which ...

Separation of concerns is considered a key technique in software engineering [5]. This technique consists of treating separately different aspects of program construction in order to control complexity, in accordance with a divide and conquer approach. For instance, the separation between a program’s functional and non-functional concerns allows the construction of an initial version supporting...