The writing performance of inverted and noninverted right- and left-handers.

Compared the writing performance of 33 inverted and 37 noninverted left-handed and right-handed writers (undergraduates). Inverted writers wrote as quickly and as well as noninverted writers when writing with the preferred writing posture but were superior to the latter group when performances with the nonpreferred posture were compared. There was no evidence that left-handers with either writing position were faster with the nonpreferred hand, in direct contradiction to R. Gregory and J. Paul's (see record 1981-11652-001) frequently cited claim that inverted left-handers write faster with the nonpreferred hand. Findings are also related to the J. Levy and M. L. Reid (see record 1977-05149-001) model of writing posture and cerebral organization. Results question attempts by educators to discourage use of the inverted writing posture. (French abstract) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

溶液温度对电化学沉积氧化亚铜薄膜相成分和显微结构的影响

用电化学方法在不锈钢基体上沉积多晶Ｃｕ２Ｏ薄膜并用Ｘ射线衍射和扫描电进行了分析研究了溶液温度对薄膜相组成、晶粒尺寸和择优取向的影响，当溶液的ＰＨ＝９，温度低于５０℃时得到的是Ｃｕ２Ｏ／Ｃｕ复相薄膜，纯Ｃｕ２Ｏ薄膜可在溶液温度高于５０℃时获得，纯Ｃｕ２Ｏ薄膜具有（１００）择优取向，实验发现薄膜的晶粒尺寸随溶液温度的增加从０．１２μｍ增加到０．６５μｍ。     

Pediatric malignant glioma with tubuloreticular inclusions and MYCN amplification. Report of a case with immunohistochemical, ultrastructural, flow cytometric, karyotypic, and Southern blot analysis

BACKGROUND: The authors described unusual pathologic features in a left frontal lobe malignant glioma in a 31/2-year-old boy. The pathology was similar in the initial excision and two subsequent recurrences at 9 and 11 months and at autopsy, when extensive subarachnoid spread was noted. METHODS: The tumor was studied by conventional histology, immunohistochemistry, flow cytometry, transmission electron microscopy (TEM), immune electron microscopy (IEM), and cytogenetic and Southern blot analysis. RESULTS: The tumor revealed two different histologic patterns. One component showed large cells with eosinophilic cytoplasm, vesicular nuclei with prominent nucleoli, eosinophilic perinuclear inclusions, and immunoreactivity for glial fibrillary acidic protein (GFAP) and vimentin. The other component consisted of undifferentiated cells with hyperchromatic nuclei and scanty cytoplasm. By TEM, the perinuclear aggregates were composed of tubuloreticular inclusions, which were also observed in endothelial cells within the tumor vasculature. By IEM, the intermediate filaments in the tumor cell cytoplasm were decorated with GFAP. Flow cytometric results revealed a marked increase in the S-phase (48%), whereas cytogenetic analysis of short-term cultures showed an abnormal karyotype containing marker chromosomes and double minutes. In the second resection, additional karyotypic abnormalities were noted, including 1p- and several additional markers. The first and second resections showed MYCN amplification by Southern Blot analysis in the 60- to 80-fold range. CONCLUSIONS: This tumor presents unique histologic, ultrastructural, and cytogenetic findings as well as MYCN amplification that is notable for a pediatric malignant glioma. Tubuloreticular inclusions were a prominent feature in this tumor, which again is unique for a glioma.     

Solubilization—A micellar phenomenon

Summary The ability of dilute surfactant solutions to solubilize water-insoluble substances to form stable systems is termed solubilization. Reviewed are the mechanism, methods for measurement, and temperature effect. Discussed in detail are surfactant structure and solubilizates, and the principles of solubilization involved. The application of solubilization to detergency operations is discussed broadly. It is concluded that solubilization is a minor, difficultly measurable factor in the large majority of aqueous cleaning operations.     

Move blocking strategy applied to re-entrant manufacturing line scheduling

Model predictive control (MPC)-based approach to fab-wide scheduling has been suggested to solve constraint-aware production optimization and in-process inventory level control simultaneously at each scheduling instance. However, application of this approach to real fab suffers from computational difficulties brought by the need to solve a huge optimization problem on-line as real fab scheduling problems are characterized by long cycle times, multiple product types, hundreds of machines/processing steps and re-entrant product flows. This study explores the use of an offset-blocking strategy combined with a modified recursive least square (RLS) estimation in the fab-wide scheduler, in order to alleviate the difficulty. The strategy is tested on a modified version of published case study called Intel Mini-Fab (IMF) problem. Despite its simplicity, the blocking strategy showed excellent performance in the face of realistic demand changes and plant/model mismatch.     

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经常出差在外，又没笔记本电脑，有时候处理一些文件就要跑到网吧去，而且要装Office软件的电脑才可以，很麻烦。后来存无意中发现了一个很不错的在线办公网站“ThinkFree”，这样随便在哪里上网部可以来处理文件了。