148 research outputs found

    Protecting Data Privacy for Mobile Payments Under the Chinese Law: Comparative Perspectives and Reform Suggestions

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    China has become one of the largest mobile payment markets in the world. While mobile payments bring great benefits such as convenience, flexibility, and efficiency, they are not without risks. This article focuses on one of the major risks, namely the data privacy risk, which is in large part caused and exacerbated by the involvement of multiple players and the extensive collection of personal information. There were some difficulties in protecting data privacy under the traditional legal framework, which was developed in a piecemeal manner with relevant provisions scattered around many different laws. In response, China has been trying to consolidate and modernise its regulatory regime for data privacy to suit the needs of the new digital era. Over the past few years, China has made great efforts to enact new laws and regulations to delineate the scope of personal information, introduce the obligations for data controllers and processors, and incorporate the principles of the Fair Information Practices. However, there are some remaining concerns, including the ineffective requirements of consent and disclosure, the ambiguous principle of purpose limitation, and the limited applicability of the principle of data minimisation. In a quest for a more effective solution to meet the regulatory challenge and strike a proper balance between privacy protection and technological innovation, a comparative analysis is conducted with several other major jurisdictions in this area, including the United States, the European Union, Singapore and Hong Kong. This article proposes that China should 1) improve the requirements of consent and disclosure; 2) strengthen the application of the principles of purpose limitation and data minimization; 3) enact a specific law for data protection; 4) establish a unified law enforcement agency, a 5) enhance private and public enforcement

    Direct structural identification of carbenium ions and investigation of host-guest interaction in the methanol to olefins reaction obtained by multinuclear NMR correlations

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    Probing and determining the intermediates formed during catalytic reactions in heterogeneous catalysis are strong challenges. Using C-13 labelling and two dimensional C-13-C-13 through-bond NMR correlations, we directly reveal the structures of a range of carbenium ion species formed during the conversion of methanol to olefins on acidic H-ZSM-5 zeolite by mapping the carbon-carbon bond connectivities. Additionally, we use C-13-Al-27 and Si-29-C-13 through-space NMR experiments to probe the interactions between the confined carbon species (including carbenium ions) and the framework of the zeolite, which quantitatively provide an estimate for the carbon-aluminium and carbon-silicon distances, respectively

    Identification of different carbenium ion intermediates in zeolites with identical chabazite topology via(13)C-C-13 through-bond NMR correlations

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    C-13-C-13 through-bond NMR correlation experiments reveal the stabilization of different carbenium ion intermediates in two zeolites possessing identical CHA topology (H-SAPO-34 and H-SSZ-13) during the methanol to olefins reaction

    An Evil Backstage Manipulator: Psychological Factors Correlated with Health-Related Quality of Life in Chinese Patients with Crohn's Disease

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    Health-related quality of life (HRQoL) is recommended as one of essential parameters to evaluate treatment effect and clinical outcome in patients with Crohn's disease (CD). Recent studies reported that psychological factors might play a role in HRQoL in Western and American CD patients. Sufficient evidences in Chinese CD patients are still unavailable. This study is dedicated to investigate the correlation of various psychological factors with HRQoL in Chinese CD patients. We prospectively collected 40 active and 40 quiescent CD patients in China and found that psychological factors, especially neuroticism and anxiety, significantly correlate with and affect HRQoL in both active and quiescent CD groups. This is the first report revealing correlation between psychological factors and HRQoL in Chinese CD patients. Therefore, we assume that our results can contribute to a better understanding of etiology and tailoring of management in Chinese patients with Crohn's disease and are beneficial to our colleagues to compare the heterogeneous characteristics of Crohn's disease in different ethnic groups

    Fast detection and structural identification of carbocations on zeolites by dynamic nuclear polarization enhanced solid-state NMR

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    Acidic zeolites are porous aluminosilicates used in a wide range of industrial processes such as adsorption and catalysis. The formation of carbocation intermediates plays a key role in reactivity, selectivity and deactivation in heterogeneous catalytic processes. However, the observation and determination of carbocations remain a significant challenge in heterogeneous catalysis due to the lack of selective techniques of sufficient sensitivity to detect their low concentrations. Here, we combine 13C isotopic enrichment and efficient dynamic nuclear polarization magic angle spinning nuclear magnetic resonance spectroscopy to detect carbocations in zeolites. We use two dimensional 13C–13C through-bond correlations to establish their structures and 29Si–13C through-space experiments to quantitatively probe the interaction between multiple surface sites of the zeolites and the confined hydrocarbon pool species. We show that a range of various membered ring carbocations are intermediates in the methanol to hydrocarbons reaction catalysed by different microstructural β-zeolites and highlight that different reaction routes for the formation of both targeted hydrocarbon products and coke exist. These species have strong van der Waals interaction with the zeolite framework demonstrating that their accumulation in the channels of the zeolites leads to deactivation. These results enable understanding of deactivation pathways and open up opportunities for the design of catalysts with improved performances
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