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Expression of NK cluster genes in the onychophoran Euperipatoides rowelli: implications for the evolution of NK family genes in nephrozoans
(2018-07-18)
Background:
Understanding the evolution and development of morphological traits of the last common bilaterian ancestor is a major goal of the evo-devo discipline. The reconstruction of this “urbilaterian” is mainly based on comparative studies of common molecular patterning mechanisms in recent model organisms. The NK homeobox genes are key players in many of these molecular pathways, including processes regulating mesoderm, heart and neural development. Shared features seen in the expression patterns of NK genes ...
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Roots of symptom-free leguminous cover crop and living mulch species harbor diverse Fusarium communities that show highly variable aggressiveness on pea (Pisum sativum)
(2018-02-14)
Leguminous cover crop and living mulch species show not only great potential for providing multiple beneficial services to agro-ecosystems, but may also present pathological risks for other crops in rotations through shared pathogens, especially those of the genus Fusarium. Disease severity on roots of subterranean clover, white clover, winter and summer vetch grown as cover crop and living mulch species across five European sites as well as the frequency, distribution and aggressiveness to pea of Fusarium spp. ...
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Optimal control theory for a unitary operation under dissipative evolution
(2014)
We show that optimizing a quantum gate for an open quantum system requires the time evolution of only three states irrespective of the dimension of Hilbert space. This represents a significant reduction in computational resources compared to the complete basis of Liouville space that is commonly believed necessary for this task. The reduction is based on two observations: the target is not a general dynamical map but a unitary operation; and the time evolution of two properly chosen states is sufficient to distinguish ...
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Spectral composition of low-coherence interferograms at high numerical apertures
(2019-04-11)
Interference signals in coherence scanning interferometry at high numerical apertures and narrow bandwidth illumination are spectrally broadened. This enables phase analysis within a spectral range much wider than the spectral distribution of the light emitted by the light source. Consequently, different surface features can be resolved depending on the wavelength used for phase analysis of the interference signals.
In addition, the surface topography itself affects the spectral composition of interference signals ...
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Big Data Analytics and Firm Performance: A Systematic Review
(2019-07-01)
The literature on big data analytics and firm performance is still fragmented and lacking in attempts to integrate the current studies’ results. This study aims to provide a systematic review of contributions related to big data analytics and firm performance. The authors assess papers listed in the Web of Science index. This study identifies the factors that may influence the adoption of big data analytics in various parts of an organization and categorizes the diverse types of performance that big data analytics ...
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Tunneling time in attosecond experiment for hydrogen atom
(2018-06-01)
Tunneling and tunneling time are hot debated and very interesting issues because of their fundamental role in the quantum mechanics. The measurement of the tunneling time in today's attosecond and strong field (low-frequency) experiments, despite its controversial discussion offers a fruitful opportunity to understand the time measurement and the role of time in quantum mechanics. In previous work Kullie (2015 Phys. Rev. A 92, 052118), we suggested a model and derived a simple relation to calculate the tunneling time, ...
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Transient non-confining potentials for speeding up a single ion heat pump
(2018-10-10)
We propose speeding up a single ion heat pump based on a tapered ion trap. If a trapped ion is excited in an oscillatory motion axially the radial degrees of freedom are cyclically expanded and compressed such that heat can be pumped between two reservoirs coupled to the ion at the turning points of oscillation. Through the use of invariant-based inverse engineering we can speed up the process without sacrificing the efficiency of each heat pump cycle. This additional control can be supplied with additional control ...
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Monitoring Transboundary Water Cooperation in SDG 6.5.2: How a Critical Hydropolitics Approach Can Spot Inequitable Outcomes
(2018-10-11)
This article contributes to critical sustainability studies through an interrogation of the Sustainable Development Goals (SDGs) and their action towards improving access to water and sanitation. This is done through an analysis of ‘SDG 6: Ensure access to water and sanitation for all’, specifically focusing on Target 6.5: ‘By 2030, implement integrated water-resources management at all levels, including through transboundary cooperation as appropriate’, and its related Indicator 6.5.2, ‘Proportion of transboundary ...
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Phylogenetic and morphological studies in Xylodon (Hymenochaetales, Basidiomycota) with the addition of four new species
(2019-02-28)
Xylodon (Hymenochaetales, Basidiomycota) is the largest segregate genus of Hyphodontia s.l. Based on molecular and morphological data, 77 species are accepted in Xylodon to date. Phylogenetic analyses of ITS and 28S sequences, including 38 new ITS and 20 28S sequences of Xylodon species, revealed four species new to science. The new taxa X. exilis, X. filicinus, X. follis and X. pseudolanatus from Taiwan, Nepal, Réunion, Belize, and USA are described and illustrated. In addition, species concepts for Odontia vesiculosa ...
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Hydraulic Mission at Home, Hydraulic Mission abroad? Examining Turkey’s Regional ‘Pax-Aquarum’ and Its Limits
(2019-01-04)
Water resource development has always been considered as a strategic tool by the Turkish ruling elites to reach food and energy security, as well as to enhance domestic peace and stability since the foundation of the Republic of Turkey. Therefore, the concept of “hydraulic mission” fits this strategic understanding, and it has become a prevailing paradigm in Turkey’s water resource development. Many academic works have already been conducted to understand how Turkey has waged an ambitious hydraulic mission by ...