نتایج جستجو برای: pp 69
تعداد نتایج: 141526 فیلتر نتایج به سال:
So-called bottom-up fabrication methods aim to assemble and integrate molecular components exhibiting specific functions into electronic devices that are orders of magnitude smaller than can be fabricated by lithographic techniques. Fundamental to the success of the bottom-up approach is the ability to control electron transport across molecular components. Organic molecules containing redox ce...
Cooper, C. R., Jackson, J. F., Azmitia, M., & Lopez, E. M. (1998). Multiple selves, multiple worlds: Three useful strategies for research with ethnic minority youth on identity, relationships, and opportunity structures. In V. C. McLoyd and L. Steinberg (Eds.), Studying minority adolescents: Conceptual, methodological, and theoretical issues. (pp. 111-125). Mahwah, NJ: Lawrence Erlbaum Associates.
M.B., and F. F. Burghard, M.D. Part VI., Section II. Pp. xxiii., 559. London: Longmans, Green, and Co. 1903. This volume, which is one of the largest of the series, is also perhaps the best. The subjects treated of are of great importance, and are very ably dealt with. Our information with regard to many has greatly advanced during recent years, and such advance is fully brought under our notic...
سابقه و هدف: فیلمهای کامپوزیتی که از دو جز خوراکی و سنتزی تشکیل شدهاند، به عنوان ایدهای جدید در بستهبندی مواد غذایی مطرح شدهاند. به دلیل ماهیت متفاوت فیلمهای خوراکی و سنتزی، کنار هم قرار دادن آنها بدون انجام اصلاحاتی بر سطح پلیمر دشوار بوده و با چالشهایی مواجه است. در این مطالعه از فرآیند پلاسما به منظور اصلاح سطحی فیلم پلیپروپیلن (PP) استفاده شده و سپس این فیلم با کربوکسی متیل سلولز (C...
In this study, different derivative spectrophotometric methods are proposed for the simultaneous determination of chlorpheniramine maleate (CP), phenylephrine HCl (PE) and phenylpropanolamine HCl (PP) in their ternary mixtures and in pharmaceutical dosage forms. Spectra of single component and ternary mixtures of various concentrations and combinations from zero- to fourth-derivation were obtai...
In this study, different derivative spectrophotometric methods are proposed for the simultaneous determination of chlorpheniramine maleate (CP), phenylephrine HCl (PE) and phenylpropanolamine HCl (PP) in their ternary mixtures and in pharmaceutical dosage forms. Spectra of single component and ternary mixtures of various concentrations and combinations from zero- to fourth-derivation were obtai...
Increasing end-of-life material recovery and its application in new products is essential to reduce resource consumption. This paper assesses the cradle-to-gate life cycle energy carbon dioxide (CO2) emissions of a road safety barrier product be installed around guardrails’ poles. To analyze potential benefit incorporating recycled materials, base case A, produced with conventional virgin synt...
Acute reactions to the haemodialysis membrane have been reported as early as 1975 [1]. Because their severity is usually mild, their frequency is probably widely underestimated. However, these reactions may occasionally be life-threatening [2]. The aetiological mechanisms of these reactions are multiple, the best characterized being allergy to ethylene oxide and combined exposure to the polyacr...
The encapsulation of graphite-type carbon wires in the regular, 3-nanometer-wide hexagonal channels of the mesoporous host MCM-41 is reported. Acrylonitrile monomers are introduced through vapor or solution transfer and polymerized in the channels with external radical initiators. Pyrolysis of the intrachannel polyacrylonitrile results in filaments whose microwave conductivity is about 10 times...
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