11 research outputs found

    Advances in structure elucidation of small molecules using mass spectrometry

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    The structural elucidation of small molecules using mass spectrometry plays an important role in modern life sciences and bioanalytical approaches. This review covers different soft and hard ionization techniques and figures of merit for modern mass spectrometers, such as mass resolving power, mass accuracy, isotopic abundance accuracy, accurate mass multiple-stage MS(n) capability, as well as hybrid mass spectrometric and orthogonal chromatographic approaches. The latter part discusses mass spectral data handling strategies, which includes background and noise subtraction, adduct formation and detection, charge state determination, accurate mass measurements, elemental composition determinations, and complex data-dependent setups with ion maps and ion trees. The importance of mass spectral library search algorithms for tandem mass spectra and multiple-stage MS(n) mass spectra as well as mass spectral tree libraries that combine multiple-stage mass spectra are outlined. The successive chapter discusses mass spectral fragmentation pathways, biotransformation reactions and drug metabolism studies, the mass spectral simulation and generation of in silico mass spectra, expert systems for mass spectral interpretation, and the use of computational chemistry to explain gas-phase phenomena. A single chapter discusses data handling for hyphenated approaches including mass spectral deconvolution for clean mass spectra, cheminformatics approaches and structure retention relationships, and retention index predictions for gas and liquid chromatography. The last section reviews the current state of electronic data sharing of mass spectra and discusses the importance of software development for the advancement of structure elucidation of small molecules

    Dream of the Red Financial Supermarket: The Gradual Emergence of Integrated Financial Services Provision in China in the 21st Century

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    While the current regulatory trend in the area of banking scope regulation favours integrated financial services provision, China continues to restrict commercial banks' permissible range of business activities via its 1995 Commercial Bank Law. In this article, we propose an analytical framework that explicitly incorporates the sophistication-level constraint of a country's financial system into the regulatory trade-off calculation between banks' need for new growth opportunities and an increased risk of financial instability. Applying this framework to China, we first discuss the episode of financial instability that led policy-makers to re-segment the financial industry in 1995 and then analyse the rationale behind China's recent, gradual movement back towards integrated financial services provision. While improved risk management capabilities mean that China may now be ready for a more liberal banking scope regulatory regime, we find that a financial crisis could still derail this important element of China's financial sector reform strateg

    Listing of Protein Spectra

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