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11.
传统的用软盘收集信息的方法存在一些不足之处,本文介绍了移动代理技术,给出了用移动代理技术来实现信息收集的方法,对该方法进行了安全性分析,并说明了该方法的优点。  相似文献   
12.
Due to the complexity of modern industrial systems, a conventional automation system is not capable of providing sufficient information management and high-level intelligent approaches, as achieving these functionalities requires the support of comprehensive data management and coordination between system devices and heterogenous information. This paper proposes the concept of e-Automation, in which computer networking and distributed intelligence agent technologies are applied to industrial automation systems, and presents a hardware and software architecture that implements this concept. An open infrastructure based on multi-agent systems is employed in the proposed architecture of e-Automation, which aims to allow the implementation of diverse tasks and to permit greater configurability than can be obtained from a traditional system. To evaluate our proposed e-Automation concept, this paper presents a case study of substation information management which adopts the proposed e-Automation architecture in power system domain.  相似文献   
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14.
Antimitotic agents such as the clinically approved vinca alkaloids, taxanes and epothilone can arrest cell growth during interphase and are therefore among the most important drugs available for treating cancer. These agents suppress microtubule dynamics and thus interfere with intracellular transport, inhibit cell proliferation and promote cell death. Because these drugs target biological processes that are essential to all cells, they face an additional challenge when compared to most other drug classes. General toxicity can limit the applicable dose and therefore reduce therapeutic benefits. Photopharmacology aims to avoid these side-effects by introducing compounds that can be applied globally to cells in their inactive form, then be selectively induced to bioactivity in targeted cells or tissue during a defined time window. This review discusses photoswitchable analogues of antimitotic agents that have been developed by combining different photoswitchable motifs with microtubule-stabilizing or microtubule-destabilizing agents.  相似文献   
15.
Inflammatory responses by the innate and adaptive immune systems protect against infections and are essential to health and survival. Many diseases including atherosclerosis, osteoarthritis, rheumatoid arthritis, psoriasis, and obesity involve persistent chronic inflammation. Currently available anti-inflammatory agents, including non-steroidal anti-inflammatory drugs, steroids, and biologics, are often unsafe for chronic use due to adverse effects. The development of effective non-toxic anti-inflammatory agents for chronic use remains an important research arena. We previously reported that oral administration of Oxy210, a semi-synthetic oxysterol, ameliorates non-alcoholic steatohepatitis (NASH) induced by a high-fat diet in APOE*3-Leiden.CETP humanized mouse model of NASH and inhibits expression of hepatic and circulating levels of inflammatory cytokines. Here, we show that Oxy210 also inhibits diet-induced white adipose tissue inflammation in APOE*3-Leiden.CETP mice, evidenced by the inhibition of adipose tissue expression of IL-6, MCP-1, and CD68 macrophage marker. Oxy210 and related analogs exhibit anti-inflammatory effects in macrophages treated with lipopolysaccharide in vitro, mediated through inhibition of toll-like receptor 4 (TLR4), TLR2, and AP-1 signaling, independent of cyclooxygenase enzymes or steroid receptors. The anti-inflammatory effects of Oxy210 are correlated with the inhibition of macrophage polarization. We propose that Oxy210 and its structural analogs may be attractive candidates for future therapeutic development for targeting inflammatory diseases.  相似文献   
16.
Carbonic anhydrase IX (CAIX) is a tumor-specific and hypoxia-induced biomarker for the molecular imaging of solid malignancies. The nuclear- and optical-imaging of CAIX-expressing tumors have received great attention due to their potential for clinical applications. Nuclear imaging is a powerful tool for the non-invasive diagnosis of primary and metastatic CAIX-positive tumors and for the assessment of responses to antineoplastic treatment. Intraoperative optical fluorescence imaging provides improved visualization for surgeons to increase the discrimination of tumor lesions, allowing for safer surgical treatment. Over the past decades, many CAIX-targeted molecular imaging probes, based on monoclonal antibodies, antibody fragments, peptides, and small molecules, have been reported. In this review, we outline the recent development of CAIX-targeted probes for single-photon emission computerized tomography (SPECT), positron emission tomography (PET), and near-infrared fluorescence imaging (NIRF), and we discuss issues yet to be addressed.  相似文献   
17.
本文针对猪皮服装革,通过对几种常用的国产复鞣剂进行了实验对比,并对它鞣革特点友及应用方法进行了探讨。  相似文献   
18.
Low sodium chicken broth with NaCl added to provide Na+ concentrations in typical reduced Na+ soups (144 and 288 mg Na+/240 mL serving) was thickened with commonly used gum, starch, or flour food additives. Xanthan gum suppressed saltiness as the result of ionic binding of Na+, as determined by sensory evaluation and 23Na NMR spectroscopy. Saltiness was affected by added NaCl (p = 0.0001), thickener (p < 0.01), and added NaCl* thickener (p < 0.01), and positively correlated with chicken and overall flavors (p = 0.0001). Cornstarch provided body, no suppression of salt taste, and the greatest salt enhancement of chicken and overall flavors. In complex food systems, temperature and other factors affected Na+ binding as measured by NMR pointing to the need for a new model.  相似文献   
19.
Malignant bone tumors are often accompanied by osteolytic destruction and severe pathological fractures. Current therapeutic strategies can largely inhibit tumor proliferation, but the high recurrence rate of tumors and related bone defects remain a significant challenge. This study aims to address these issues by developing a novel near-infrared (NIR) light-responsive and a mechanically strong hydrogel that offers excellent photothermal tumor therapy and bone fracture repair capabilities. The as-prepared hydrogel exhibits good biocompatibility and an ultra-strong photothermal effect due to the formation of a complex network with up-conversion lanthanide-Au hybrid nanoparticles and alginate molecules. A subcutaneous tumor model is used to demonstrate that tumors can be efficiently eradicated via local photothermal treatment, where there is no tumor recurrence within the observation period. Moreover, the injected hydrogel becomes mechanically strong due to in situ Ca2+ crosslinking, which provides a supportive matrix to promote the repair of bone defects via stabilization of the fractured bone structure. The high photothermal effect and robust support offered by this single material demonstrate the potential of using the proposed hydrogel for the simultaneous treatment of bone tumor removal and bone healing.  相似文献   
20.
李丽  杨丽侠  梁勇 《弹道学报》2004,16(4):52-56
模拟装置和密闭爆发器2种不同发射药点火燃烧试验表明,常规点火剂很难解决低易损性发射药(LOVA发射药)的点火问题,选择点火剂时应考虑点火剂的综合点燃能力.从配方方面,应在不影响其易损性的情况下,尽可能使用含能粘结剂和增塑剂,以改善其点火性能.  相似文献   
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