The treatment of rural sewage has become an important part environmental protection. In this study, a novel waterwheel-rotating biological contactor (WRBC) system, with intensified biofilm and high-shock load resistance, was applied to treat sewage. When the COD concentration actual fluctuated between 79–530 mg/L, removal efficiency 41.3–94.5%, NH4+-N always reach 100% TN changed 14.3–86.2%, wh...

We construct various new BPS states of D-branes preserving 8 supersymmetries. These include super Jackstraws (a bunch of scattered Dor (p, q)-strings preserving supersymmetries), and super waterwheels (a number of D2-branes intersecting at generic angles on parallel lines while preserving supersymmetries). Super D-Jackstraws are scattered in various dimensions but are dynamical with all their i...

Timothy A. Brown, Niloufar Hosseini-Nassab, Hao Chen* and Richard N. Zare* We report the observation of the electrochemically generated nitrenium ions of 4,40dimethyoxydiphenylamine and di-p-tolylamine in solution by mass spectrometry. This setup takes inspiration from desorption electrospray ionization mass spectrometry to sample directly from the surface of a rotating waterwheel working elect...

abstract:the general perception of islamic finance is that it prohibits the practice of paying and receiving interest, but islamicfinance is much broader than interest rate prohibition. islamic financial services can be viewed as a set of financialservices which are diversified based on the needs of society.since in the iranian economy most of the enterprises are micro and/or small, micro finan...

a micro-channel heat exchanger reactor with different micro-baffle shapes has been studied numerically. governing equations were solved base on the finite volume method with fluent software. in upper section, oxidation reaction of methanol was occurred and in lower section, steam reforming of methanol was done. two sections were separated with solid part which played as heat exchanger and trans...

We study the thermodynamic efficiency of Malkus-Lorenz waterwheel. For this purpose, we derive an exact analytical formula that describes dissipative structure as a function phase space variables and constant parameters dynamical system. show that, generally, machine is progressively driven far from equilibrium by increasing its uptake matter environment, it also tends to increase efficiency. H...