4,684 research outputs found

    Clinical efficacy research of nerve growth factor combined with traditional medicine for the treatment of anterior ischemic optic neuropathy

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    AIM: To evaluate the efficacy and safety of nerve growth factor(NGF)on optic nerve anterior ischemic optic neuropathy.<p>METHODS:A total of 343 eyes of 343 patients with anterior ischemic optic neuropathy were treated with mouse NGF by the dosage of 30μg qd and continuous injected for three weeks, at the same time given expanding vascular medicine and neurotrophic agent. Corrected LogMar visual acuity, visual field mean deviation(MD)values and pattern visual evoked potential(P-VEP)were recorded and analyzed. The adverse reactions in the course of treatment were analyzed in order to evaluate the safety of this method. <p>RESULTS: The patient's vision after treatment were significantly increased compared with that before treatment, MD of visual field and P-VEP display incubation period after treatment were significantly lowered compared with that before treatment, the difference were statistically significant(<i>P</i><0.05). There were 18 cases of adverse events in laboratory indicators in this study, and the incidence rate was 5.25%.<p>CONCLUSION: Mouse nerve growth factor combined with vasodilators and neurotrophin for the treatment of anterior ischemic optic neuropathy had satisfaction efficacy and safety

    Protecting entanglement from correlated amplitude damping channel using weak measurement and quantum measurement reversal

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    Based on the quantum technique of weak measurement, we propose a scheme to protect the entanglement from correlated amplitude damping decoherence. In contrast to the results of memoryless amplitude damping channel, we show that the memory effects play a significant role in the suppression of entanglement sudden death and protection of entanglement under severe decoherence. Moreover, we find that the initial entanglement could be drastically amplified by the combination of weak measurement and quantum measurement reversal even under the correlated amplitude damping channel. The underlying mechanism can be attributed to the probabilistic nature of weak measurements.Comment: 11 pages, 5 figures, accepted by Quantum Information Processin

    2-Bromo-1-(4-methoxy­phen­yl)ethanone

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    The title compound, C9H9BrO2, prepared by the reaction of 4-methoxy­acetophenone and cupric bromide, , is approximately planar (r.m.s. deviation 0.0008 Å). In the crystal, weak inter­molecular aromatic C—H⋯Ocarbon­yl hydrogen-bonding inter­actions result in a one-dimensional chain structure

    2,2′-Hexamethyl­enedi-1,3-benzothia­zole

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    The title compound, C20H20N2S2, was prepared by the reaction of suberic acid and 2-amino­thio­phenol under microwave irradiation. The mol­ecule lies on an inversion center
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