scholarly journals Semantic constraint on preposition incorporation of postverbal locative PPs in Mandarin Chinese

2019 ◽  
Vol 20 (1) ◽  
pp. 85-130 ◽  
Author(s):  
Jeeyoung Peck ◽  
Jingxia Lin

Abstract Other than subcategorized argument locative PPs (e.g. 放在桌子上 fàng zài zhuōzi-shàng ‘put on the table’), the postverbal position in Modern Mandarin Chinese can only be filled by limited types of adjunct locative prepositional phrases (e.g. 跳在桌子上 tiào zài zhuōzi-shàng ‘jump onto the table’). Among these postverbal adjunct locative PPs, only a small set of PPs permits the incorporation of the preposition into the preceding verb to form a V-P compound (“preposition incorporation”), yielding their previous prepositional object to surface as the object of the compound verb V-P. Previous studies claim that adjunct phrases which quantize an event, such as event delimiters, may behave like arguments (“the delimiter hypothesis”). Yet, our observations find that adjunct locative PPs that are not event delimiters (e.g. directional 向 xiàng/往 wǎng ‘toward’ PPs or non-directional 在 zài ‘at’ PPs) can also allow their prepositional object to appear as the verbal object. This thus calls for a modification of the widely-accepted delimiter hypothesis. We argue that the semantic characterization of the postverbal locative PPs permitting PI can be generalized as being associated with the denotation of a scalar result. Specifically, we understand result from the perspective of scale structure proposed in recent studies and argue that in addition to delimiting an event (that is, introducing a closed scale to the event from the scalar perspective), such PPs can also either add directional information (an open scale) to the event that they modify, or further specify scalar information for the event denoted by the VP. This work not only provides a unified analysis of most types of preposition incorporation that involve the postverbal locative PPs in Mandarin Chinese, but is also the first study that provides a comprehensive analysis of the scalar properties and functions of Chinese locative PPs. Our findings from the Chinese data will also contribute to the cross-linguistic semantic generalization of internal adjuncts and the domain of extended direct case assignment.

2021 ◽  
Vol 3 (3) ◽  
pp. 376-388
Author(s):  
Francisco J. Sevilla ◽  
Andrea Valdés-Hernández ◽  
Alan J. Barrios

We perform a comprehensive analysis of the set of parameters {ri} that provide the energy distribution of pure qutrits that evolve towards a distinguishable state at a finite time τ, when evolving under an arbitrary and time-independent Hamiltonian. The orthogonality condition is exactly solved, revealing a non-trivial interrelation between τ and the energy spectrum and allowing the classification of {ri} into families organized in a 2-simplex, δ2. Furthermore, the states determined by {ri} are likewise analyzed according to their quantum-speed limit. Namely, we construct a map that distinguishes those ris in δ2 correspondent to states whose orthogonality time is limited by the Mandelstam–Tamm bound from those restricted by the Margolus–Levitin one. Our results offer a complete characterization of the physical quantities that become relevant in both the preparation and study of the dynamics of three-level states evolving towards orthogonality.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Sami Havukainen ◽  
Jonai Pujol-Giménez ◽  
Mari Valkonen ◽  
Ann Westerholm-Parvinen ◽  
Matthias A. Hediger ◽  
...  

AbstractTrichoderma reesei is an ascomycete fungus known for its capability to secrete high amounts of extracellular cellulose- and hemicellulose-degrading enzymes. These enzymes are utilized in the production of second-generation biofuels and T. reesei is a well-established host for their production. Although this species has gained considerable interest in the scientific literature, the sugar transportome of T. reesei remains poorly characterized. Better understanding of the proteins involved in the transport of different sugars could be utilized for engineering better enzyme production strains. In this study we aimed to shed light on this matter by characterizing multiple T. reesei transporters capable of transporting various types of sugars. We used phylogenetics to select transporters for expression in Xenopus laevis oocytes to screen for transport activities. Of the 18 tested transporters, 8 were found to be functional in oocytes. 10 transporters in total were investigated in oocytes and in yeast, and for 3 of them no transport function had been described in literature. This comprehensive analysis provides a large body of new knowledge about T. reesei sugar transporters, and further establishes X. laevis oocytes as a valuable tool for studying fungal sugar transporters.


2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Catherine A. Nikiel ◽  
Elfatih A. B. Eltahir

AbstractFor millennia the Nile supplied Egypt with more water than needed. As the population grew and the economy expanded, demand on water increased accordingly. Here, we present a comprehensive analysis to reconstruct how total demand on water outstripped supply of the Nile water in the late 1970s, starting from a surplus of about 20 km3 per year in the 1960s leading to a deficit of about 40 km3 per year by the late 2010s. The gap is satisfied by import of virtual water. The role of economic growth in driving per capita demand on water is quantified based on detailed analysis of water use by agriculture and other sectors. We develop and test an empirical model of water demand in Egypt that relates demand on water to growth rates in the economy and population. Looking forward, we project that within this decade of the 2020 s, under nominal scenarios of population and economic growth, Egypt is likely to import more virtual water than the water supplied by the Nile, bringing into question the historical characterization of Egypt as “the gift of the Nile”.


2021 ◽  
Author(s):  
Sebastian Ponath ◽  
Chetan Joshi ◽  
Amy T. Merrill ◽  
Volker Schmidts ◽  
Kim Greis ◽  
...  

A comprehensive analysis of the organocatalytic α‐chlorination of aldehydes with N‐chloroimides and differ‐ ent catalysts is presented. For this reaction, alternate mechanisms were proposed that differ in the role of resting state intermediates and the rationalization of the observed enantioselectivity. This manuscript aims at resolving these funda‐ mental questions on the basis of rigorous structural characterization of intermediates (configuration and conformation), NMR studies, ion mobility‐mass spectrometry, concentration profiles, isotope studies, and DFT calculations. <br>


Author(s):  
Huan Zhong ◽  
Zongwei Cai ◽  
Zhu Yang ◽  
Yiji Xia

AbstractNAD tagSeq has recently been developed for the identification and characterization of NAD+-capped RNAs (NAD-RNAs). This method adopts a strategy of chemo-enzymatic reactions to label the NAD-RNAs with a synthetic RNA tag before subjecting to the Oxford Nanopore direct RNA sequencing. A computational tool designed for analyzing the sequencing data of tagged RNA will facilitate the broader application of this method. Hence, we introduce TagSeqTools as a flexible, general pipeline for the identification and quantification of tagged RNAs (i.e., NAD+-capped RNAs) using long-read transcriptome sequencing data generated by NAD tagSeq method. TagSeqTools comprises two major modules, TagSeek for differentiating tagged and untagged reads, and TagSeqQuant for the quantitative and further characterization analysis of genes and isoforms. Besides, the pipeline also integrates some advanced functions to identify antisense or splicing, and supports the data reformation for visualization. Therefore, TagSeqTools provides a convenient and comprehensive workflow for researchers to analyze the data produced by the NAD tagSeq method or other tagging-based experiments using Oxford nanopore direct RNA sequencing. The pipeline is available at https://github.com/dorothyzh/TagSeqTools, under Apache License 2.0.


2012 ◽  
Vol 53 (10) ◽  
pp. 2242-2251 ◽  
Author(s):  
Yohei Ishibashi ◽  
Utaro Kobayashi ◽  
Atsushi Hijikata ◽  
Keishi Sakaguchi ◽  
Hatsumi M. Goda ◽  
...  

Molecules ◽  
2019 ◽  
Vol 24 (23) ◽  
pp. 4303 ◽  
Author(s):  
Job Tchoumtchoua ◽  
David Mathiron ◽  
Nicole Pontarin ◽  
David Gagneul ◽  
Anne-Isaline van Bohemen ◽  
...  

Flax (Linum usitatissimum) is a plant grown in temperate regions either for its fiber or for its seeds, which are rich in the essential fatty acid omega-3. It is also well known as a source of medicinal compounds. The chemical composition of its leaves is currently poorly described. In order to fill this gap, we have conducted a comprehensive analysis of flax leaf metabolome. The exploration of the metabolome allowed the characterization of compounds isolated for the first time in flax leaves. These molecules were isolated by preparative HPLC and then characterized by NMR, LC-MS and standard analysis. This work extended our picture of C-glycosyl-flavonoids and coniferyl alcohol derivatives accumulated in flax. The follow-up of the content of these different metabolites via UPLC-MS revealed significant accumulation differences in spring and winter flax leaves. In particular, two methylated C-glycosylflavonoids (swertisin and swertiajaponin) were the most abundant phenolic compounds in winter flax whereas they were not detected in spring flax. This result suggests that these 2 compounds are involved in cold stress tolerance in flax.


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