bluuebunny/crossref_metadata_2025_split huggingface dataset:
Robust model predictive control for polytopic uncertain systems with state saturation nonlinearities under Round‐Robin protocol
Authors: Wang Jianhua , Song Yan , Wei Guoliang , Dong Yuying 
Published: February 2019

SummaryThis paper is concerned with the robust model predictive control (RMPC) problem for polytopic uncertain systems with state saturation nonlinearities under the Round‐Robin (RR) protocol. With respect to the practical application, one of the most commonly encountered obstacles that stem from the physical limitation of system components, ie, state saturation, is adequately taken into consideration. In order to reduce the network transmission burden and improve the utilization of the network from the controller nodes to the actuator node, a so‐called RR protocol is employed to orchestrate the data transmission order. At each transmission instant, only one controller node that obtains the priority is accessible to the shared communication network. Our aim of the underlying problem is to design a set of controllers in the framework of RMPC such that the closed‐loop system is asymptotically stable. By taking the influence of the RR protocol and the state saturation precisely into account, some sufficient criteria are established in terms of the token‐dependent Lyapunov‐like approach. Then, an online optimization problem subjected to some matrix inequality constraints is provided, and the desired controllers can be obtained by solving the certain upper bound of the objective addressed. Finally, a distillation process example is provided to illustrate the effectiveness of the proposed RMPC approach.
What happens at home does not stay at home: The role of family and romantic partner conflict in destructive leadership
Authors: Dionisi Angela M. , Barling Julian 
Published: February 2019

AbstractWhy leaders behave the way they do is of considerable importance. Our goal in this research was to understand how family‐to‐work conflict and romantic relationship conflict influence two different forms of destructive leadership, namely, abusive supervision and passive leadership. To do so, we invoke the conservation of resources theory. One hundred twenty‐three leader–follower dyads participated. Leaders completed questionnaires on their own family‐to‐work conflict and romantic relationship conflict, depressive symptoms, and cognitive distraction. Their followers rated their abusive supervision and passive leadership. With the use of Hayes's PROCESS program, depressive symptoms mediated the effects of family‐to‐work conflict and romantic relationship conflict on abusive supervision, whereas cognitive distraction mediated the effects of family‐to‐work conflict on passive leadership. Implications and several directions for further research are offered.
DNA‐Mediated Self‐Assembly of Plasmonic Antennas with a Single Quantum Dot in the Hot Spot
Authors: Nicoli Francesca , Zhang Tao , Hübner Kristina , Jin Boyuan , Selbach Florian , Acuna Guillermo , Argyropoulos Christos , Liedl Tim , Pilo‐Pais Mauricio 
Published: February 2019

AbstractDNA self‐assembly is a powerful tool to arrange optically active components with high accuracy in a large parallel manner. A facile approach to assemble plasmonic antennas consisting of two metallic nanoparticles (40 nm) with a single colloidal quantum dot positioned at the hot spot is presented here. The design approach is based on DNA complementarity, stoichiometry, and steric hindrance principles. Since no intermediate molecules other than short DNA strands are required, the structures possess a very small gap (≈ 5 nm) which is desired to achieve high Purcell factors and plasmonic enhancement. As a proof‐of‐concept, the fluorescence emission from antennas assembled with both conventional and ultrasmooth spherical gold particles is measured. An increase in fluorescence is obtained, up to ≈30‐fold, compared to quantum dots without antenna.
Nitrogen Reduction to Ammonia on Atomic‐Scale Active Sites under Mild Conditions
Authors: Yan Xiao , Liu Daolan , Cao Huanhuan , Hou Feng , Liang Ji , Dou Shi Xue 
Published: February 2019

AbstractAmmonia is one of the most important chemicals and energy carriers. Currently, ammonia is industrially produced through the Haber–Bosch process under harsh conditions of high pressure and high temperature, which are energy consuming and environmentally unfriendly. Recently, nitrogen reduction to ammonia under ambient conditions has attracted intensive research interest, in which highly efficient catalysts are of great importance. In this review, recent theoretical and experimental progresses on novel heterogeneous catalysts with low atomicity for the nitrogen reduction reaction (NRR) under ambient conditions are highlighted. Reaction mechanisms for the NRR are first introduced. Then, advances in the synthesis and characterization of catalysts with single atom features are summarized, with a particular focus on the rational design of atomic catalysts for the NRR. Lastly, the critical challenges, possible solutions, and future perspectives in the research on NRR catalysis are presented. This review systematically presents the readers with the latest advances in this field, and more importantly, sheds light on the future development of NRR catalysis with the single atomic feature.
3D Manipulation and Imaging of Plant Cells using Acoustically Activated Microbubbles
Authors: Läubli Nino F. , Shamsudhin Naveen , Vogler Hannes , Munglani Gautam , Grossniklaus Ueli , Ahmed Daniel , Nelson Bradley J. 
Published: February 2019

AbstractThe precise manipulation of single cells and organisms opens exciting new possibilities for biological research. In this work, an acoustic rotational manipulation method for imaging single cells of different plant species (pollen grains of Lilium longiflorum and Arabidopsis thaliana) is demonstrated. Acoustically activated microbubbles generate radiation forces as well as microvortices in the aqueous medium, which allow various specimens to be trapped and precisely rotated. The rotational behavior of individual plant cells is studied and their motion to facilitate 3D fluorescent microscopy is controlled. The use of this manipulation technique for high‐resolution 3D optical reconstructions of nontransparent samples is demonstrated. The applicability of this method for open‐microchannel arrangement, which may enable multiplexed 3D access to samples for microsurgery and injection, is further demonstrated.
Light‐Activated Rapid Disinfection by Accelerated Charge Transfer in Red Phosphorus/ZnO Heterointerface
Authors: Li Jun , Liu Xiangmei , Tan Lei , Liang Yanqin , Cui Zhenduo , Yang Xianjin , Zhu Shengli , Li Zhaoyang , Zheng Yufeng , Yeung Kelvin Wai Kwok , Wang Xianbao , Wu Shuilin 
Published: February 2019

AbstractA red phosphorus (RP)/ZnO heterojunction thin film is developed to harvest solar or light emitting diode (LED) light for rapid, effective, ecofriendly, lower‐cost, and safe disinfection, which is convenient for universal and large‐scale deposition. The most stable geometrical structure of the RP/ZnO heterojunction, i.e., an RP (001) plane and a ZnO (002) plane, exhibits charge redistribution largely at the interface region. Therefore, the effective interfacial charge transfer and the improved separation efficiency of photogenerated electron–hole pairs can strongly boost reactive oxygen species (ROS)‐generation reactions to enhance photocatalytic bacterial inactivation. The excellent light‐activated point‐of use disinfection can be achieved even through LED light of phone. Additionally, the RP/ZnO heterojunction also possesses excellent solar light‐to‐heat conversion efficiency, leading to further lethality to bacteria through hyperthermia. Antibacterial efficacy of 99.96 ± 0.03% against Staphylococcus aureus at 5 min and 99.97 ± 0.02% against Escherichia coli at 4 min can be attributed to the synergetic antibacterial activity of solar photocatalysis and photothermal effect (more than 50 °C in 2 min). This platform provides a surface strategy for designing synergetic photocatalytic and photothermal materials to fully harvest solar energy for not only water disinfection but also antibacterial surfaces in medical facilities, touch screen devices, or seawater desalination.
Toward a monophyleticNotholaena(Pteridaceae): resolving patterns of evolutionary convergence in xeric‐adapted ferns
Authors: Rothfels Carl J. , Windham Michael D. , Grusz Amanda L. , Gastony Gerald J. , Pryer Kathleen M. 
Published: February 2019

AbstractCheilanthoid ferns (Pteridaceae) are a diverse and ecologically important clade, unusual among ferns for their ability to colonize and diversify within xeric habitats. These extreme habitats are thought to drive the extensive evolutionary convergence, and thus morphological homoplasy, that has long thwarted a natural classification of cheilanthoid ferns. Here we present the first multigene phylogeny to focus on taxa traditionally assigned to the large genusNotholaena. New World taxa (Notholaenasensu Tryon) are only distantly related to species occurring in the Old World (Notholaenasensu Pichi Sermolli). The circumscription ofNotholaenaadopted in recent American floras is shown to be paraphyletic, with species usually assigned toCheilanthesandCheiloplectonnested within it. The position ofCheiloplectonis particularly surprising—given its well‐developed false indusium and non‐farinose blade, it is morphologically anomalous within the “notholaenoids”. In addition to clarifying natural relationships, the phylogenetic hypothesis presented here helps to resolve outstanding nomenclatural issues and provides a basis for examining character evolution within this diverse, desert‐adapted clade.
A taxonomic revision of the eusporangiate fern family Marattiaceae, with description of a new genus Ptisana
Authors: Murdock Andrew G. 
Published: February 2019

AbstractRecent phylogenetic investigations of marattioid ferns (Marattiaceae) have generated a refined understanding of genus‐ and species‐level relationships within the family. A taxonomic revision of marattioid ferns is presented here. This new taxonomy is congruent with the current understanding of the phylogeny of marattioid ferns based on both molecular and morphological data. Marattiaceae is recognized here in the broad and most commonly used sense, encompassing all extant genera. Marattia as traditionally defined is paraphyletic, and is split here into three morphologically distinct and monophyletic genera: Marattia s.str. is restricted to the Neotropics and Hawaii; Eupodium, a distinctive Neotropical genus that has not been recognized by recent authors, is resurrected; and a newly described genus Ptisana comprises the Paleotropical species. Angiopteris is circumscribed broadly to include Archangiopteris, Macroglossum, Protomarattia, and Protangiopteris. Neither Danaea nor Christensenia require changes to their circumscriptions. As Marattia s.l. is undergoing the most drastic change in this taxonomy, species‐level detail is given for Marattia s.str. and the segregated genera Eupodium and Ptisana. New combinations are made in Eupodium and Ptisana. Considerable monographic work still remains to be done, and is of particular importance given the threatened status of many presently poorly understood species in this family.
Revised infrafamilial classification of Symplocaceae based on phylogenetic data from DNA sequences and morphology
Authors: Fritsch Peter W. , Kelly Lawrence M. , Wang Yuguo , Almeda Frank , Kriebel Ricardo 
Published: February 2019

AbstractPhylogenetic analyses were conducted with 51 parsimony‐informative morphological characters and previously generated DNA sequence data from five genic regions (ITS, trnL‐trnF, rpl16, matK, trnC‐trnD) to revise the classification of Symplocaceae in accordance with ranked monophyly. Observed conflict between the morphological and molecular estimates is interpreted as a consequence of convergent features of the androecium among two clades of the family, possibly influenced by the advent of hummingbird pollination in the largest New World lineage. All nine taxa above the species level in the revised classification (two genera, and within Symplocos two subgenera, three sections, and two series) are based on clades with ≥ 90% bootstrap support values and Bayesian posterior probabilities of 1.00 in molecular analyses. Symplocos section Cordyloblaste (two species) is elevated to the genus level on the basis of both its position as sister to all other Symplocos species and morphological differences that have been used to delineate genera in other Ericalean families. Optimization of the morphological characters onto one of the trees from the combined morphological and molecular analysis suggests that all nine recognized taxa correspond to clades that have at least two morphological synapomorphies, although for two of these clades support is provided by only ambiguous characters. All 318 species of Symplocos, as currently recognized in the literature, are assigned to subdivisions. The assignment of 90 of these is based on molecular and morphological data, and that of the rest (as yet unsampled for DNA sequence characters) on morphological attributes alone. The ranks of two taxa are changed (to Symplocos subgenus Palura and Symplocos series Urbaniocharis), several lectotypes are designated, and a key to genera and subdivisions of Symplocos, descriptions, and complete synonymy are provided.
Microsatellites resolve the taxonomy of the polyploid Cardamine digitata aggregate (Brassicaceae)
Authors: Jørgensen Marte Holten , Carlsen Tor , Skrede Inger , Elven Reidar 
Published: February 2019

AbstractPolyploidy, probably the single most important mode of sympatric speciation in plants, tends to result in complicated evolutionary patterns. The Cardamine digitata aggregate is a species complex where polyploidy has resulted in taxonomic and nomenclatural controversies. Two basic chromosome numbers are found (x = 7 and x = 8), and all plants studied so far are tetra‐ to dodecaploids. We used six microsatellite loci originally developed for the Arabidopsis genome to identify evolutionary and taxonomic units within the C. digitata aggregate, obtaining 102 polymorphic markers. Using different analysis methods (PCO, CVA, STRUCTURE, parsimony), we recognised four approximately equidistant units corresponding in morphology with the four described species: C. blaisdellii, C. digitata, C. microphylla, and C. purpurea. All taxa include at least two ploidal levels; thus recurrent taxonomic autopolyploidy is indicated.
Relationships and taxonomy of Paeonia arietina G. Anderson complex (Paeoniaceae) and its allies
Authors: Hong De-Yuan , Zhang Da-Ming , Wang Xiao-Quan , Koruklu Selcuk Tugrul , Tzanoudakis Dimitris 
Published: February 2019

AbstractThe previous taxonomic treatments of Paeonia arietina (= P. mascula subsp. arietina) and studies on relationships with its allies are reviewed. As a result of examination of a large number of herbarium specimens, extensive field observations, population sampling in the Mediterranean region, Turkey and the Balkan, and subsequent analysis, the P. arietina–P. parnassica group is found to be distinct from P. mascula in having tuberous roots, hirsute stems, petioles and sepals, and leaves that are mostly densely villose beneath. Our morphological and molecular data indicate that the P. arietina–P. parnassica group is most closely related to the P. officinalis group. These two groups are clearly separated from each other by differences in the indumentum of the sepals and stems, and in the shape, number and indumentum of the leaflets/segments. Paeonia parnassica is distinguished from P. arietina mainly by the dark purple petals (vs. pink or red) and purple anthers (vs. yellow). Paeonia officinalis subsp. banatica can not be clearly distinguished from P. officinalis subsp. officinalis. As a result, P. arietina and P. parnassica are recognized at specific rank, whilst P. officinalis subsp. banatica is retained as a subspecies.
Keep the DNA rolling: Multiple Displacement Amplification of archival plant DNA extracts
Authors: Brockington Samuel F. , Mavrodiev Evgeny , Ramdial Jeremy , Dhingra Amit , Soltis Pamela S. , Soltis Douglas E. 
Published: February 2019

AbstractInsufficient reserves of genomic DNA can hamper molecular phylogenetic analysis. High‐throughput genetic techniques that require relatively large amounts of DNA, the difficulty in obtaining samples of taxa from remote regions, and re‐sampling of limited archival DNA by repeated phylogenetic surveys can often limit the DNA available for study. To provide a possible solution to this problem, we applied Multiple Displacement Amplification (MDA) to eight archival genomic DNA extracts. The performance of MDA‐treated DNA versus untreated genomic extract was evaluated by PCR amplification of three common phylogenetic markers (psbB, nad71, ITS) across a dilution series. Generally, amplification of all three genetic markers from the MDA‐treated DNA dilutions was greater than from equivalent dilutions of untreated genomic template. These results indicate that genes from all three plant genomes were amplified and that copies of the target genes psbB, nad7, and ITS were substantially increased during the MDA procedure. Sequencing of the psbB, nad7, and ITS PCR products from both the MDA‐treated DNA and the untreated template was used to assess the fidelity of the MDA procedure. Sequences from the MDA‐treated DNA and the untreated genomic template differed by 1.2 × 10–4%, which is within the margin of Taq error. These findings emphasize the significance of Multiple Displacement Amplification for optimization of weak PCR, maintenance of depleted genetic stocks, increasing density of taxon sampling, and improving consistency between different phylogenetic analyses.
Phylogeny and evolutionary patterns in Nymphaeales: integrating genes, genomes and morphology
Authors: Borsch Thomas , Löhne Cornelia , Wiersema John 
Published: February 2019

AbstractThe Nymphaeales (water lilies) clade has diverged as the second branch in the tree of angiosperms and is composed of the three families Cabombaceae, Nymphaeaceae and Hydatellaceae. Extant species diversity is constituted by 82 species, about half of which belong to the nearly globally distributed genus Nymphaea. DNA sequence datasets of multiple non‐coding and rapidly evolving regions from all three genomic compartments (ca. 8 kb of sequence per taxon) for a dense sampling of Nymphaeales, Austrobaileyales and Amborella were examined. In an attempt to review the literature on water lilies of the past decades a matrix comprising 62 morphological characters was generated. The crown group of extant Nymphaeales is supported by a series of synapomorphies, several of which have evolved in line with the acquisition of herbaceous habits and adaptations to an aquatic lifestyle such as the loss of cambium and sclerenchyma. Further innovations evolved subsequently within the diversification of the water lily crown group such as hydropotes, or an aril as floating device for the seeds in core Nymphaeaceae that have evolved fruits ripening under water. Both Hydatellaceae and Cabombaceae exhibit many derived features that in part may be explained as adaptations to anemophily. The Nymphaeaceae are supported as monophyletic by most character partitions, including morphology, as are Nuphar and Barclaya as successive sisters to the core Nymphaeacae (Nymphaea, Ondinea, Euryale, Victoria). Parsimony analysis of the morphological dataset alone yielded a well resolved and statistically supported tree. Ondinea appears as a close relative of the Australian subg. Anecphya clade within Nymphaea by all genomic compartments and morphology. Earlier hypotheses of Nymphaea being paraphyletic to the Euryale‐Victoria clade are inferred in nuclear trees, albeit with low support. Different morphological characters equivocally support a position of the Euryale‐Victoria clade as sister to the subg. Hydrocallis‐Lotus clade within Nymphaea or as sister to all species of Nymphaea. The diversification of the water lily clade is further characterized by a trend towards increased complexity in floral architecture.
Biogeography of Nymphaeales: extant patterns and historical events
Authors: Löhne Cornelia , Yoo Mi-Jeong , Borsch Thomas , Wiersema John , Wilde Volker , Bell Charles D. , Barthlott Wilhelm , Soltis Douglas E. , Soltis Pamela S. 
Published: February 2019

AbstractWith the present study we attempt to elucidate the history of the order Nymphaeales—water‐lilies and relatives—in time and space. On the basis of a dense taxon sampling that covers all genera of Cabombaceae and Nymphaeaceae and all subgenera of the genus Nymphaea, and on the basis of well‐supported phylogenetic hypotheses, we estimate divergence times in Nymphaeales. Distribution data for all species are used to reconstruct ancestral ranges and to identify possible dispersal events in the biogeographic history of Nymphaeales. Considering the fossil record for the clade as well as geologic history, a plausible historical scenario can be drawn. The assessment of extant biogeography shows that there are several centres of species diversity for Nymphaeales, i.e., northern South America, Central America, the Zambezian region of Africa and northern Australia. However, the diversification of the Nymphaeales started in the Northern Hemisphere when the northern landmasses were covered by tropical vegetation, except for the very high latitudes. The estimation of divergence times depicted two distinct radiation events, a rapid first differentiation into three major lineages during the Paleocene (Cabombaceae, Nuphar, remaining Nymphaeaceae) and the radiation of core Nymphaeaceae (Victoria, Euryale, Nymphaea incl. Ondinea) from the Late Oligocene to Middle Miocene. The second radiation probably started in the Northern Hemisphere. We hypothesize that subsequent spatial separation and southward relocation of the descendants led to the disjunct distribution of extant sister lineages in core Nymphaeaceae, e.g., Euryale‐Victoria or Nymphaea subgg. Hydrocallis and Lotos.
Relevance of Fourier transform infrared spectroscopy and leaf anatomy for species classification in Camellia (Theaceae)
Authors: Lu Hong-Fei , Shen Jin-Bo , Lin Xiu-Yan , Fu Jia-Li 
Published: February 2019

AbstractFourier transform infrared spectroscopy (FTIR), a rapid, simple, high‐resolution analytical method, provides biochemical profiles containing overlapping signals from numerous compounds present in cells. FTIR analysis of leaves of twenty‐one species in four sections of Camellia (one in sect. Longissima, two in sect. Longipedicellata, sixteen in sect. Thea, and two in sect. Glaberrima) was conducted to determine whether they can be discriminated on the basis of biochemical profiles. The results showed that the spectra were highly typical for different species. A hierarchical dendrogram based on principal component analysis of FTIR data confirmed the morphological classification of the four sections proposed in previous work. Quantitative and qualitative leaf anatomy characteristics, such as pattern and size of epidermal cells, cuticular ornamentation, layer of epidermal cell, and thickness of palisade parenchyma and spongy parenchyma, provided additional taxonomic evidence.