Mg(OEt)2 with spherical morphology is one of the most important precursors for the preparation of industrial Ziegler-Natta catalysts. In the present article, morphology evolution of Mg(OEt)2 particles is studied in the course of the synthesis. The morphology of Mg(OEt)2 particles is observed throughout the process by SEM. The results show that Mg(OEt)2 particles are formed through i) seed gener...

mg(oet)2 with spherical morphology is one of the most important precursors for the preparation of industrialziegler-natta catalysts. in the present article, morphology evolution of mg(oet)2 particles is studied in the courseof the synthesis. the morphology of mg(oet)2 particles is observed throughout the process by sem. the resultsshow that mg(oet)2 particles are formed through i) seed generati...

A novel analysis of the syntax of utterance particles in Chinese is proposed in this paper. In terms of their diachronic origin, there are two types of utterance particles in Chinese, namely predicative utterance particles and non-predicative utterance particles, both of which are derived by a generalized syntactic schema. It is proposed that utterance particles are the complement of a function...

We study the sedimentation process of a binary colloidal soft sphere system where significant overlaps of the particles are possible. We employ estimates of the equation of states in the small and large pressure limit in order to predict the final states of the sedimentation process. Furthermore, Brownian dynamics simulations were performed in order to confirm the predictions and to explore the...

A sentence-final particle (SFP, henceforth) is an optional component for a sentence in Cantonese. Traditionally an SFP contains at least one independent segment. The present study proposes that for sentences without a segmental SFP, sentencefinal intonation can act as a segmentless SFP. Systematical acoustic experiment was conducted based on this assumption. Two cross-cutting dichotomies were c...

This study explores boundary pitch movements in Taiwan Southern Min (TSM) by investigating pitch variations of final particles. Based on annotation research on the pitch targets of final particles in a 117-minute spontaneous speech corpus, it is proposed that instead of viewing such pitch variations as lexical tones, these variations should be referred to as three types boundary pitch movements...

This paper gives a thorough investigation into Mandarin sentence-final particles (henceforth SFPs). First I induce core grammatical functions and semantic interpretations of SFPs. Based on Rizzi’s (1997) Split CP hypothesis, I make some modifications to accommodate Mandarin SFPs and map them onto separate functional heads within a proper hierarchy. I also examine some empirical evidence of head...

This paper proposes two syntactic positions for the wide range of Cantonese sentence-final particles that occur in the CP domain. The first position that I argue for is identified with the Force head (SFP1) of the C space (à la Rizzi 1997) which hosts particles that express speech acts and speaker-oriented modality. The second position (SFP2) is an iterative head located lower than the higher T...

Branching ratios and CP noninvariance of nonleptonic rare exclusive B decays without charm particles in the final state are studied. Decay channels, such as Bd K tt, K* p, B, K p, K p, Bd, K K,K* K,K K*,K* K, etc. , that can give direct evidence for the W-loop diagrams are pointed out. Some decay modes have large (tens of percent) CP noninvariance of partial-decay-rate diff'erences. Decays such...