نتایج جستجو برای: dimensional lock
تعداد نتایج: 412479 فیلتر نتایج به سال:
A "trimethyl lock" system has been known to facilitate lactonization reactions through what has been termed a stereopopulation control mechanism. We have found that a similar trimethyl lock system can also facilitate cyclic ether formation with the concomitant release of a carboxylic acid in the presence of anhydrous tetrabutylammonium fluoride. To study this base-mediated trimethyl lock-facili...
Background and Aim: In cases under heparin therapy, frequent blood samples must be taken for coagulation tests. Therefore, samples from saline lock can be a useful means to decrease the pain of taking frequent blood samples. The purpose of this study was to find the effect of this method on the validity of coagulation tests results. Materials and Methods: In this case-control study a con...
OATAO is an open access repository that collects the work of Toulouse researchers and makes it freely available over the web where possible. A numerical investigation of high-Reynolds-number constant-volume non-Boussinesq density currents in deep ambient. The time-dependent behaviour of non-Boussinesq high-Reynolds-number density currents, released from a lock of height h 0 and length x 0 into ...
In this paper, an adaptive rule based controller for an anti-lock regenerative braking system (ARBS) of a series hybrid electric bus (SHEB) has been proposed. The proposed controller integrates the regenerative braking and wheel anti-lock functions by controlling the electric motor of the hybrid vehicle, without using any conventional mechanical anti-lock braking system. The performance of the ...
A facile, one-pot synthesis of rotaxanated supramolecular organic frameworks (RSOFs) is reported. These systems consist of bis-carboxylate anions threaded through the core of tetraimidazolium macrocycles. Trivalent metal cations, yttrium(III) and smaller lanthanides, are used to "lock" the threaded strut in place. This results in the formation of three-dimensional RSOFs.
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