共查询到20条相似文献,搜索用时 78 毫秒
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金桥铝业集团有限公司(KanKiuAluminiumGroupCom.,ltd.)位于广东省台山市,其总部在香港,在美国、澳大利亚、日本与新加坡都设有办事处与销售中心。该公司产品的85%以上出口到世界各地,现有挤压机22台,生产能力约65kt/a,目前正在做从日本或意大利引进1台50MN挤压机的工作,这台挤压机投产后,金桥的挤压机台数将居中国挤压厂中的第四位,生产能力居第二位.仅次于忠旺集团铝型材有限公司。 相似文献
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大中型铝合金挤压材生产现状及应用前景分析 总被引:4,自引:0,他引:4
全面系统地介绍和论述了国内外大中型铝合金挤压材生产现状、市场需求和应用前景。指出铝合金挤压铝型材是一种“永不衰败”的材料.特别是大中型工业用结构铝合金型材更是当今世界最短缺紧俏商品之一.21世纪将是“大挤压机世纪”或“大中型材世纪”。 相似文献
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据不完全统计,1991年我国约有561台铝型材挤压机,在数量上仅次于美国,居世界第二位。1990年美国拥有610台挤压机,其年产量128万吨,而日本全国铝型材挤压机约为330台,挤压材产量为112万吨,其中铝型材占100万吨。 相似文献
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首先通过电炉—LF精炼炉—VD精炼炉—包内球化的工艺路线获得了足够的优质铁液,然后通过选取合适的分型面、设置合理的浇注系统、设计专用的冷铁、安放足够大的保温冒口和上表面加大加工余量来去除夹渣等措施,成功生产了具有厚大断面的大型球墨铸铁铸件。 相似文献
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Early motor manifestations are the main components of focal seizures involving the frontal lobe. We examined the relationship between the initial ictal motor manifestations and interictal abnormalities of cerebral glucose consumption (rCMRGlc) as assessed by PET in 48 consecutive patients with focal seizures of neocortical origin. Group data analysis revealed that patients with predominantly unilateral clonic seizures had a significant contralateral perirolandic hypometabolism and to a lesser degree a contralateral frontomesial hypometabolism. Patients with predominantly focal tonic manifestations showed a hypometabolism within the frontomesial and perirolandic regions that was unilateral in all patients with lateralized tonic seizures. Patients with versive seizures had mainly contralateral metabolic depressions without a consistent regional pattern. Patients with hypermotor seizures had metabolic depressions involving frontomesial, anterior cingulate, perirolandic, and anterior insular/frontal operculum areas. In all patient groups, bilateral and symmetric hypometabolism of the thalamus and cerebellum was observed. We propose that this pattern of distinctly abnormal metabolic brain regions demonstrates not only possible epileptogenic zones but also symptomatogenic brain regions as shown by the associations between clinical manifestations and sets of abnormal brain regions, particularly if epileptogenic zones are in a clinically silent neocortical brain region. The detection and possible differentiation of symptomatogenic and epileptogenic zones might improve the effectiveness of presurgical noninvasive studies. 相似文献
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The isolation from human liver microsomes and identification by electrospray mass spectrometry and tandem mass spectrometry of a new metabolite of IMM-125 resulting from the biotransformation of the amino acid 1 vinylic methyl group to a carboxylic acid, called the IMM-125-COOH metabolite, is described. It was found that the complex of this new metabolite with cyclophilin A is formed less easily than the corresponding cyclophilin A-IMM-125-CH2OH main metabolite and cyclophilin A-IMM-125 complexes. However, when formed, the IMM-125-COOH metabolite-cyclophilin A complex requires more collision-induced dissociation (CID) to dissociate the complex than the complexes formed with the two other ligands. The nanospray tandem mass spectrum of the IMM-125-COOH metabolite-cyclophilin A complex (m/z 1755) gives rise to cyclophilin A-ligand complexes of m/z 1751 by elimination of CO2 and of m/z 1749 by loss of CO2 and H2O or glycerol. Since immunosuppressive activity is known to be dependent on the formation of a binary complex between cyclophilin A and the drug and since the target for the binary complex was found to be the calcium- and calmodulin-dependent protein phosphatase, calcineurin, it could be interesting to measure for structurally related immunosuppressive drugs the CID energy necessary to dissociate the binary complexes in order to evaluate whether a correlation with the phosphatase activity could be derived. 相似文献
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J Donnez M Nisolle N Gillet M Smets S Bassil F Casanas-Roux 《Canadian Metallurgical Quarterly》1996,11(3):641-646
The management of large endometriomas was described in a series of 814 patients. Combined therapy using gonadotrophin-releasing hormone agonist (GnRHa) and carbon dioxide laser laparoscopy was proposed. Drainage and GnRHa for 12 weeks provoked a reduction of the endometrioma size up to 50% of the initial value. After vaporization of the internal wall, a cumulative pregnancy of 51% after 1 year was achieved. A recurrence rate of 8% was observed for a follow-up of 2-11 years. Histological data demonstrated that the epithelium covering the ovary which is the mesothelium can invaginate in the ovarian cortex. Some of the invaginations were seen to be continuous with endometrial tissue, strongly suggesting the metaplasia theory in the pathogenesis of ovarian endometrioma. 相似文献
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24 m跨大截面框架梁高支架支撑体系经施工单位采用PKPM施工安全计算软件进行设计,采用扣件式钢管脚手架,经实践,扣件式钢管脚手架支撑体系完全能够满足结构施工的安全性、经济性的要求。 相似文献
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Twelve cases of optic nerve glioma seen over a 28 year period are analysed herein in this autopsy study. 相似文献
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根据工程实例中柱网8.4m×8.0m×2(跨)现浇混凝土框架空心大板结构做了1:1的模型试验,试验结果表明:该楼盖承载力大,安全储备高,内力符合“归并法”所具有的变化规律,用ANSYS中SOLID65单元对此空心楼盖进行仿真分析,结果表明ANSYS值与试验值比较吻合。通过试验研究为此类楼盖应用于大柱网多层建筑现浇混凝土框架空心大板结构及大柱网高层建筑现浇混凝土空心大板框架一剪力墙结构提供了实验数据。并再次验证了“归并法”的正确性及科学性。 相似文献