997 resultados para 16-163


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介绍了16位80C196KC单片机的独特性能.组成由80C196KC单片机、存储器、光电编码器、模数转换器、键盘显示器、电机驱动电路等构成的测控系统.有针对性地提出了改进措施,并给出了HSO的应用实例.

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分散元素广泛应用于高新技术领域, 具有重要的经济价值, 但因其在地壳中的低含量和其本身地球化学性质的分散性而不易富集成矿, 但是富乐铅锌矿床中却有4 种分散元素Cd, Se, Ge, Ga 具有工业价值。该矿床位于我国重要的川滇黔多金属成矿带南东部,分散元素主要赋存在闪锌矿中, 平均w (B)ö10- 6分别为Cd 16 183, Se 163, Ge 135, Ga 86,其中w (Cd) 是迄今国内最高。闪锌矿分棕黑色、红棕色和黄棕色3 种颜色。Cd 在深色闪锌矿中而Ge 和Ga 在浅色闪锌矿中相对富集, Se 在不同颜色闪锌矿中含量几乎不变。Cd, Ge,Se 主要呈类质同象形式存在, Cd, Ge 占据Zn 的位置, 而Se 占据S 的位置。Ga 主要以显微吸附形式存在, 少量以类质同象形式存在。Zn 与Cd 负相关, 而与Ge 正相关, 与Se 不相关。分散元素地球化学特征指示矿床为沉积2改造成因。

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O trabalho divulga os resultados do estudo agroambiental realizado nos espaços amazônicos, no médio Tapajós, tendo como centro a rodovia BR-163, diagnosticada quanto à sua natureza e potencialidades. O GEIPOT solicitou ao Núcleo, um estudo sobre a aptidão agrícola das terras para a cultura de soja e pecuária, com a finalidade de elaborar um planejamento racional e eficiente do uso das terras, dando enfoque à demanda por transporte originada no setor agrícola, minimizando os impactos causados ao meio ambiente.

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This is a report on what can be learnt from our world dataset about viewers of The Lord of the Rings who were aged under 16. In this report, I draw both on the world set, and on the UK subset, sometimes drawing comparisons between them. The reason for using both is that, obviously, the world set is so much larger (comprising 24,739 in toto, with 2475 under 16), but the UK set (comprising 3115 in toto, and 306 under 16s) allows us to explore both some of the specificities of responses here, the qualitative meaning of some responses (given we worked in 14 languages, many are inaccessible to us for analysis), and of course their relations to the quantitative patterns that emerge.

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The paper discusses the fable-like form of Callimachus’ Epigram 1 Pfeiffer and of Sotades’ fragmentary Invective against Ptolemy, and suggests that the former poem may contain an allusion to the latter. In the light of this reading, both poems are to be viewed as playfully encouraging the Ptolemies’ incestuous marriage.

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17 fotografías, dieciséis en tono de grises.

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Second letter to nephew, Daniel Avery Whedon from Daniel D. Whedon dated May 16, 1881.

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Letter from Daniel D. Whedon to nephew. One of two dated May 16, 1881.

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Cream liqueurs manufactured by a one-step process, where alcohol was added before homogenisation, were more stable than those processed by a two -step process which involved addition of alcohol after homogenisation. Using the one-step process, it was possible to produce creaming-stable liqueurs by using one pass through a homogeniser (27.6 MPa) equipped with "liquid whirl" valves. Test procedures to characterise cream liqueurs and to predict shelf life were studied in detail. A turbidity test proved simple, rapid and sensitive for characterising particle size and homogenisation efficiency. Prediction of age thickening/gelation in cream liqueurs during incubation at 45 °C depended on the age of the sample when incubated. Samples that gelled at 45 °C may not do so at ambient temperature. Commercial cream liqueurs were similar in gross chemical composition, and unlike experimentally produced liqueurs, these did not exhibit either age-gelation at ambient or elevated temperatures. Solutions of commercial sodium caseinates from different sources varied in their calcium sensitivity. When incorporated into cream liqueurs, caseinates influenced the rate of viscosity increase, coalescence and, possibly, gelation during incubated storage. Mild heat and alcohol treatment modified the properties of caseinate used to stabilise non-alcoholic emulsions, while the presence of alcohol in emulsions was important in preventing clustering of globules. The response to added trisodium citrate varied. In many cases, addition of the recommended level (0.18%) did not prevent gelation. Addition of small amounts of NaOH with 0.18 % trisodium citrate before homogenisation was beneficial. The stage at which citrate was added during processing was critical to the degree of viscosity increase (as opposed to gelation) in the product during 45 °C incubation. The component responsible for age-gelation was present in the milk-solids non fat portion of the cream and variations in the creams used were important in the age-gelation phenomenon Results indicated that, in addition to possibly Ca++, the micellar casein portion of serum may play a role in gelation. The role of the low molecular weight surfactants, sodium stearoyl lactylate and monodiglycerides in preventing gelation, was influenced by the presence of trisodium citrate. Clustering of fat globules and age-gelation were inhibited when 0.18 % citrate was included. Inclusion of sodium stearoyl lactylate, but not monodiglycerides, reduced the extent of viscosity increase at 45 °C in citrate containing liqueurs.

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In this exploratory research we analyze the structure sense evidenced by 33 secondary students (16-18 years old) in tasks requiring to reproduce the structure of given algebraic expressions. The expressions used were algebraic fractions related to algebraic identities. There were big differences between the students performance which allowed differencing levels in students´ structure sense. Questions and conjectures to be addressed in future research are presented.