Nankai University

About: Nankai University is a education organization based out in Tianjin, China. It is known for research contribution in the topics: Catalysis & Adsorption. The organization has 42964 authors who have published 51866 publications receiving 1127896 citations. The organization is also known as: Nánkāi Dàxué.

A Comparative Ownership Advantage Framework for Cross-Border M&As: The Rise of Chinese and Indian MNEs

Abstract: Unlike multinational enterprises from developed economies (DE MNEs), MNEs from emerging economies (EE MNEs) commonly do not have absolute ownership advantage in management, technology, and know-how. Yet some of them have recently undertaken aggressive cross-border mergers and acquisitions (M&As). This phenomenon challenges the current understanding in the international business literature (particularly Dunning's ownership-location-internalization [OLI] paradigm), which posits that the primary objective of foreign direct investment (FDI) is to leverage MNEs' ownership advantage in host markets. EE MNEs' cross-border M&As therefore create a research gap between theory and reality. Integrating the comparative advantage theory with Dunning's OLI paradigm, this article develops a comparative ownership advantage framework characterized by five attributes: (1) national-industrial factor endowments, (2) dynamic learning, (3) value creation, (4) reconfiguration of value chain, and (5) institutional facilitation and constraints. We then propose five propositions on the cross-border M&As undertaken by Chinese and Indian MNEs, and test these propositions with a dataset of 1,526 cross-border M&As from 2000 to 2008. Preliminary results support the new comparative ownership advantage framework, which explains both the differences and commonalities between Chinese and Indian MNEs' cross-border M&As.

The acidity of atmospheric particles and clouds

Abstract: . Acidity, defined as pH, is a central component of aqueous chemistry. In the atmosphere, the acidity of condensed phases (aerosol particles, cloud water, and fog droplets) governs the phase partitioning of semivolatile gases such as HNO3 , NH3 , HCl, and organic acids and bases as well as chemical reaction rates. It has implications for the atmospheric lifetime of pollutants, deposition, and human health. Despite its fundamental role in atmospheric processes, only recently has this field seen a growth in the number of studies on particle acidity. Even with this growth, many fine-particle pH estimates must be based on thermodynamic model calculations since no operational techniques exist for direct measurements. Current information indicates acidic fine particles are ubiquitous, but observationally constrained pH estimates are limited in spatial and temporal coverage. Clouds and fogs are also generally acidic, but to a lesser degree than particles, and have a range of pH that is quite sensitive to anthropogenic emissions of sulfur and nitrogen oxides, as well as ambient ammonia. Historical measurements indicate that cloud and fog droplet pH has changed in recent decades in response to controls on anthropogenic emissions, while the limited trend data for aerosol particles indicate acidity may be relatively constant due to the semivolatile nature of the key acids and bases and buffering in particles. This paper reviews and synthesizes the current state of knowledge on the acidity of atmospheric condensed phases, specifically particles and cloud droplets. It includes recommendations for estimating acidity and pH, standard nomenclature, a synthesis of current pH estimates based on observations, and new model calculations on the local and global scale.

Quantum-dot-based photoelectrochemical sensors for chemical and biological detection.

Abstract: Quantum-dot-based photoelectrochemical sensors are powerful alternatives for the detection of chemicals and biochemical molecules compared to other sensor types, which is the primary reason as to why they have become a hot topic in nanotechnology-related analytical methods. These sensors basically consist of QDs immobilized by a linking molecule (linker) to an electrode, so that upon their illumination, a photocurrent is generated which depends on the type and concentration of the respective analyte in the immediate environment of the electrode. The present review provides an overview of recent developments in the fabrication methods and sensing concepts concerning direct and indirect interactions of the analyte with quantum dot modified electrodes. Furthermore, it describes in detail the broad range of different sensing applications of such quantum-dot-based photoelectrochemical sensors for inorganic and organic (small and macro-) molecules that have arisen in recent years. Finally, a number of aspects concerning current challenges on the way to achieving real-life applications of QD-based photochemical sensing are addressed.