338 research outputs found
Voice access of global information for broad-band wireless:technologies of today and challenges of tomorrow
No full textContinuous hidden Markov models integrating transitional and instantaneous features for Mandarin syllable recognition
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Trellis coded partial response signaling for power and bandwidth efficient digital transmission
No full textRelative threshold tree pruning multi-user detection with user ordering and user partitioning for MC-CDMA
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RETRACTED ARTICLE: Upregulation of long non-coding RNA OGFRP1 facilitates endometrial cancer through regulating miR-124-3p/SIRT1 axis and activating PI3K/AKT/GSK-3β pathway
No full textWe, the Editors and Publisher of the journal Artificial Cells, Nanomedicine, and Biotechnology, have retracted the following article:Yuqiong Lv, Shaorong Chen, Jingjing Wu, Ruyin Lin, Limei Zhou, Guimin Chen, Huiqing Chen and Yumin Ke. (2019). Upregulation of long non-coding RNA OGFRP1 facilitates endometrial cancer by regulating miR-124-3p/SIRT1 axis and by activating PI3K/AKT/GSK-3b pathway. Artificial Cells, Nanomedicine, and Biotechnology. 47:1, 2083–2090, DOI: 10.1080/21691401.2019.1617727Since publication, concerns have been raised about the integrity of the data in the article. When approached for an explanation, the authors checked their data and confirmed there are fundamental errors present. Therefore, they have agreed to the retraction of this article. The authors apologise for this oversight.We have been informed in our decision-making by our policy on publishing ethics and integrity and the COPE guidelines on retractions.The retracted article will remain online to maintain the scholarly record, but it will be digitally watermarked on each page as ‘Retracted’
Modulation of molecular mobility in sucrose-based amorphous solids detected by phosphorescence of erythrosin B
No full textThis project studied the temperature and composition dependence of molecular mobility in amorphous sucrose. Phosphorescence of erythrosin B provided parameters sensitive to localized molecular mobility in the glass and to more global modes of mobility activated at the glass transition and provided evidence of dynamic site heterogeneity in amorphous sucrose solids. In sucrose-based binary matrices, plasticizer (glycerol), salts (NaCl, CaCl2, MgCl2, Na-citrate, Na-acetate, Na-phosphates), maltodextrins (DE 5 to 18), protein (gelatin), and polysaccharides (xanthan and high amylose starch) were selected to investigate how variations in nature and content of each additive influence the molecular mobility as well as dynamic site heterogeneity in amorphous sucrose matrix.
Measurements of phosphorescence intensity, lifetime, and emission energy were made in amorphous sucrose-additive films containing the probe erythrosin B. Results showed the complex effects of additives on the mobility in a hydrogen-bonded sugar matrix. Glycerol exhibited an antiplasticization effect shown as decreased mobility at glycerol/sucrose mole ratio ≤ 0.27 and at temperature ≤ 45° C. On the contrary, all the polymers studied, including gelatin, xanthan and high amylose starch, displayed a ‘plasticization’ effect (increasing mobility) at very low while a rigidification effect (decreasing mobility) at higher concentration without significant change in Tg. Maltodextrins, mixtures of molecules with a variety of molecular weights, increase the mobility in spite of their high Tg. Sodium chloride showed a strong rigidification effect on the sucrose matrix; however, this effect was weakened at mole ratio NaCl/sucrose above 0.5. Other salts showed effects resulting from a compromise between two opposite actions (decreasing mobility due to salt itself and increasing mobility due to absorbed moisture). All above behaviors are difficult to interpret using Tg alone. Molecular mobility appears to be more accurate to evaluate the physical stability of the matrix.
Phosphorescence of erythrosin B was also able to report dynamic site heterogeneity that is an intrinsic property of the amorphous solid state. The heterogeneity was be evaluated by the variation of lifetime and lifetime heterogeneity across the excitation and emission band and the temperature dependence of bandwidth and lifetime heterogeneity. The composition influence on the dynamic site heterogeneity was discussed as well.Ph.D.Includes bibliographical references
RETHINKING INDUSTRIAL POLICY
No full textDespite the hold of the neoliberal orthodoxy on policy making in developing countries, industrial policy remains important for the promotion of industrial development. However, the context for the design of industrial policy has profoundly changed as a result of new rules governing international trade, the rise of global value chains and marketing networks, and other aspects of globalization. Traditionally, the case for industrial policy has been framed in terms of “market failures” but the paper argues that that is not a sufficient basis. After addressing the traditional points of criticism, an attempt is made to outline the “domains” of industrial policy in the current circumstances, especially for industrially lagging countries. As country contexts differ widely there are no satisfactory blueprints for policy making that countries can readily adopt. As in production decisions, considerable ingenuity and innovation is needed in designing policies. This is all the more necessary as the WTO rules have become increasingly stringent and the rise of international trading networks has created new barriers for young firms to enter the world market. These developments have changed the context but not the importance of policy in industrial development. The paper identifies areas where government intervention is needed and can still make a positive difference.
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