bluuebunny/crossref_metadata_2025 huggingface dataset:
Highly enantioselective [3+2] cycloadditions of terminal allenoates with β-trifluoromethyl α,β-enones
Authors: Li Maizhan , Zhou Wei
Published: June 2020

Highly enantio- and diastereoselective phosphine-catalyzed [3+2] cycloadditions of terminal allenoates with β-perfluoroalkyl α,β-enones leading to a series of trifluoromethylated cyclopentenes have been disclosed.
Synthesis of tertiary amines by direct Brønsted acid catalyzed reductive amination
Authors: Hussein Mohanad A. , Dinh An H. , Huynh Vien T. , Nguyen Thanh Vinh
Published: June 2020

Triflic acid efficiently promotes the reductive amination reactions of carbonyl compounds on a broad range of substrates.
Emergence of electrical conductivity in a flexible coordination polymer by using chemical reduction
Authors: Fuku Kentaro , Miyata Momoka , Takaishi Shinya , Yoshida Takefumi , Yamashita Masahiro , Hoshino Norihisa , Akutagawa Tomoyuki , Ohtsu Hiroyoshi , Kawano Masaki , Iguchi Hiroaki
Published: June 2020

Postsynthetic chemical reduction enhanced the electrical conductivity of a new flexible 1D coordination network with a naphthalenediimide (NDI)-based ligand.
Engineering zirconium-based UiO-66 for effective chemical conversion of d-xylose to lactic acid in aqueous condition
Authors: Ponchai Panyapat , Adpakpang Kanyaporn , Thongratkaew Sutarat , Chaipojjana Kawisa , Wannapaiboon Suttipong , Siwaipram Siwarut , Faungnawakij Kajornsak , Bureekaew Sareeya
Published: June 2020

Local defects and crystallinity of UiO-66 were systematically engineered, yielding an effective catalyst for lactic acid production from d-xylose via a hydrothermal reaction.
Monitoring polymer-assisted mechanochemical cocrystallisation through in situ X-ray powder diffraction
Authors: Germann Luzia S. , Emmerling Sebastian T. , Wilke Manuel , Dinnebier Robert E. , Moneghini Mariarosa , Hasa Dritan
Published: June 2020

Small amounts of specific polymers are sufficient for improving the rate of cocrystal formation through polymer-assisted grinding.
An MRI-visible immunoadjuvant based on hollow Gd2O3 nanospheres for cancer immunotherapy
Authors: Li Xia , Wang Xiupeng , Ito Atsuo
Published: June 2020

An MRI-visible immunoadjuvant based on hollow Gd2O3 nanospheres significantly promotes the cellular uptake of a tumor antigen by antigen presenting cells, exhibits pH-dependent alteration of the MR signal intensity and markedly enhances the antitumor immunity.
Benzylic C–H heteroarylation ofN-(benzyloxy)phthalimides with cyanopyridines enabled by photoredox 1,2-hydrogen atom transfer
Authors: Zhong Long-Jin , Wang Hong-Yu , Ouyang Xuan-Hui , Li Jin-Heng , An De-Lie
Published: June 2020

Visible light initiated α-C(sp3)–H hetroarylation ofN-(benzyloxy)phthalimides with cyanopyridinesvia1,2-hydrogen atom transfer is depicted.
Synthesis of fluorescent MOFs: live-cell imaging and sensing of a herbicide
Authors: Mohanty Aurobinda , Singh Udai P. , Butcher R. J. , Das Neeladrisingha , Roy Partha
Published: June 2020

Various metal–organic frameworks of Zn(ii) and Cd(ii) have been synthesized hydrothermally for the detection of herbicide (simazine) as well as nitro-aromatic compounds. Also these MOFs show live-cell imaging for MCF-7 cells.
Orientation and lattice matching of CoNi nanowires embedded in SrTiO3: unveiling novel strain relaxation mechanisms in vertically aligned nanocomposites
Authors: Weng Xiaorong , Hennes Marcel , Tran Thomas , Casaretto Nicolas , Demaille Dominique , Vidal Franck , Zheng Yunlin
Published: June 2020

Unveiling complex structural rearrangements and novel strain relaxation mechanisms in vertically aligned nanocomposites.
2D-metal–organic coordination polymers of lanthanides (La(iii), Pr(iii) and Nd(iii)) with redox-active dioxolene bridging ligands
Authors: Kharitonov Alexandr D. , Trofimova Olesya Y. , Meshcheryakova Irina N. , Fukin Georgy K. , Khrizanforov Mikhail N. , Budnikova Yulia H. , Bogomyakov Artem S. , Aysin Rinat R. , Kovalenko Konstantin A. , Piskunov Alexandr V.
Published: June 2020

2D-coordination redox-active networks bearingt-Bu-substituted anilic bridged ligands and lanthanide ions were synthesized and characterized.
The role of SP-B1–25 peptides in lung surfactant monolayers exposed to gold nanoparticles
Authors: Hossain Sheikh I. , Gandhi Neha S. , Hughes Zak E. , Saha Suvash C.
Published: June 2020

Lung surfactant monolayer’s (acts as the first line barrier for inhaled nanoparticles) components (lipids and peptides) rearrange themselves by the influence of exposed gold nanoparticles at various stages of the breathing cycle.
Ultrafast dynamics in LMCT and intraconfigurational excited states in hexahaloiridates(iv), models for heavy transition metal complexes and building blocks of quantum correlated materials
Authors: Budkina Darya S. , Gemeda Firew T. , Matveev Sergey M. , Tarnovsky Alexander N.
Published: June 2020

Two heavy octahedral Ir(iv) halides in intraconfigurational and LMCT excited electronic states with ultrafast relaxation dynamics driven by the Jahn–Teller effect.
Oxygen adsorption properties of small cobalt oxide clusters: application feasibility as oxygen gas sensors
Authors: Molavi R. , Safaiee R. , Sheikhi M. H.
Published: June 2020

Density functional theory calculations show chemical exothermic oxygen adsorption on cobalt oxide clusters with charge transfer from the clusters to oxygen.
Quantum-assisted diamagnetic deflection of molecules
Authors: Fein Yaakov Y. , Shayeghi Armin , Kiałka Filip , Geyer Philipp , Gerlich Stefan , Arndt Markus
Published: June 2020

We measure the diamagnetic deflection of anthracene and adamantane in a long-baseline matter-wave interferometer.
Gas phase formation of phenalenevia10π-aromatic, resonantly stabilized free radical intermediates
Authors: Zhao Long , Kaiser Ralf I. , Lu Wenchao , Ahmed Musahid , Oleinikov Artem D. , Azyazov Valeriy N. , Mebel Alexander M. , Howlader A. Hasan , Wnuk Stanislaw F.
Published: June 2020

1H-Phenalene can be synthesizedviathe reaction of the 1-naphthyl radical with methylacetylene and allene under high temperature conditions prevalent in carbon-rich circumstellar environments and combustion systems.
Efficiency range of the Belousov–Zhabotinsky reaction to induce the self-organization of transient bonds in metallo-supramolecular polymeric systems
Authors: Ahmadi Mostafa , Seiffert Sebastian
Published: June 2020

Although reaction parameters offer control over chemical oscillations in a transient metallo-supramolecular polymer gel network system, this does not result in a pronounced self-organization of metallo-supramolecular bonds.
Harnessing the surface structure to enable high-performance cathode materials for lithium-ion batteries
Authors: Yang Luyi , Yang Kai , Zheng Jiaxin , Xu Kang , Amine Khalil , Pan Feng
Published: June 2020

The impact of surface structure and interface reconstruction on the electrochemical performances of lithium-ion battery cathode materials is summarized.
Tools and strategies of systems metabolic engineering for the development of microbial cell factories for chemical production
Authors: Ko Yoo-Sung , Kim Je Woong , Lee Jong An , Han Taehee , Kim Gi Bae , Park Jeong Eum , Lee Sang Yup
Published: June 2020

This tutorial review covers tools, strategies, and procedures of systems metabolic engineering facilitating the development of microbial cell factories efficiently producing chemicals and materials.
Emerging combination strategies with phototherapy in cancer nanomedicine
Authors: Xie Zhongjian , Fan Taojian , An Jusung , Choi Wonseok , Duo Yanhong , Ge Yanqi , Zhang Bin , Nie Guohui , Xie Ni , Zheng Tingting , Chen Yun , Zhang Han , Kim Jong Seung
Published: June 2020

Based on the challenges in single-mode phototherapy, this review summarizes the significant research progress in combinatorial strategies with phototherapy.
Bridging the gap between academic and industrial hydrocracking: on catalyst and operating conditions' effects
Authors: Mendes Pedro S. F. , Silva João M. , Ribeiro M. Filipa , Daudin Antoine , Bouchy Christophe
Published: June 2020

This work aims at bridging the knowledge gap between the well-studied Pt/zeolite catalysts and the industrially-employed NiMoS/(Al2O3 + zeolite) ones.
Alkaline treatment as a means to boost the activity of TiO2in selective photocatalytic processes
Authors: Yurdakal Sedat , Çetinkaya Sıdıka , Augugliaro Vincenzo , Palmisano Giovanni , Soria Javier , Sanz Jesus , Torralvo Maria Jose , Livraghi Stefano , Giamello Elio , Garlisi Corrado
Published: June 2020

In this work, the activity enhancement of TiO2photocatalysts by alkaline treatment has been investigated.
Efficient synthesis of methanol and ethylene glycol via the hydrogenation of CO2-derived ethylene carbonate on Cu/SiO2 catalysts with balanced Cu+–Cu0 sites
Authors: Song Tongyang , Chen Wei , Qi Yuanyuan , Lu Jiqing , Wu Peng , Li Xiaohong
Published: June 2020

The preparation method for Cu/SiO2 catalysts had a great impact on the Cu+/Cu0 ratio and catalytic performance.
Modification of eosin Y and cobalt molecular catalyst system with reduced graphene oxide for enhanced photocatalytic hydrogen production
Authors: Lewandowska-Andralojc Anna , Malolepszy Artur , Stritt Anika , Grohmann Andreas
Published: June 2020

Reduced graphene oxide enhances photocatalytic hydrogen production in the system composed of Eosin Y and molecular catalyst Co(bpy)32+.
pH-Sensitive subphthalocyanines and subazaphthalocyanines
Authors: Skvortsov Ivan A. , Zimcik Petr , Stuzhin Pavel A. , Novakova Veronika
Published: June 2020

Novel pH sensitive fluorophores have been synthesized and studied by electrochemistry, UV-vis and fluorescence spectroscopy in solution and microemulsions.
Utilizing hydrogen underpotential deposition in CO reduction for highly selective formaldehyde production under ambient conditions
Authors: Yao Libo , Pan Yanbo , Shen Xiaochen , Wu Dezhen , Bentalib Abdulaziz , Peng Zhenmeng
Published: June 2020

Highly selective formaldehyde production is achieved via CO electroreduction utilizing hydrogen underpotential deposition under ambient conditions.
Wet-expandable capsules made from partially modified cellulose
Authors: Mystek Katarzyna , Li Hailong , Pettersson Torbjörn , Françon Hugo , Svagan Anna J. , Larsson Per A. , Wågberg Lars
Published: June 2020

Formation of wet-expandable capsules by the regeneration of dissolved cellulose that has been partially converted to dialcohol cellulose.
Single particle ICP-MS combined with internal standardization for accurate characterization of polydisperse nanoparticles in complex matrices
Authors: Huang Yingyan , Tsz-Shan Lum Judy , Sze-Yin Leung Kelvin
Published: June 2020

Single particle inductively coupled plasma-mass spectrometry (sp-ICP-MS) is becoming a popular tool to analyze nanoparticles.
Sensitivity enhancement of inorganic arsenic analysis byin situmicroplasma preconcentration coupled with liquid chromatography atomic fluorescence spectrometry
Authors: Yao Zhenzhen , Liu Meitong , Liu Jixin , Mao Xuefei , Na Xing , Ma Zhihong , Qian Yongzhong
Published: June 2020

A novel liquid chromatography hydride generation-in situdielectric barrier discharge trap-atomic fluorescence spectrometry instrument was fabricated. It was used to preconcentrate inorganic arsenic species from food samples.
A system for the high-throughput measurement of the shear modulus distribution of human red blood cells
Authors: Saadat Amir , Huyke Diego A. , Oyarzun Diego I. , Escobar Paulina V. , Øvreeide Ingrid H. , Shaqfeh Eric S. G. , Santiago Juan G.
Published: June 2020

A combined microfluidic and high-fidelity simulation approach is used to measure the shear modulus of 1000's of red blood cells from a single individual.
Point-of-care testing system for digital single cell detection of MRSA directly from nasal swabs
Authors: Schulz Martin , Calabrese Silvia , Hausladen Florian , Wurm Holger , Drossart Dominik , Stock Karl , Sobieraj Anna M. , Eichenseher Fritz , Loessner Martin J. , Schmelcher Mathias , Gerhardts Anja , Goetz Ulrike , Handel Marina , Serr Annerose , Haecker Georg , Li Jia , Specht Mara , Koch Philip , Meyer Martin , Tepper Philipp , Rother Raimund , Jehle Michael , Wadle Simon , Zengerle Roland , von Stetten Felix , Paust Nils , Borst Nadine
Published: June 2020

Automated point-of-care testing system for rapid single cell detection of MRSA directly from nasal swab samples.
Biomimetic hybrid membrane-based nanoplatforms: synthesis, properties and biomedical applications
Authors: Liao Yunyan , Zhang Yifan , Blum Nicholas Thomas , Lin Jing , Huang Peng
Published: June 2020

This review focuses on the classification, synthesis, biomedical applications, prospects and challenges of biomimetic hybrid membrane-based nanoparticles.
Hybrid 3,4-dihydropyrimidin-2-(thi)ones as dual-functional bioactive molecules: fluorescent probes and cytotoxic agents to cancer cells
Authors: de Souza Vanessa P. , Santos Fabiano S. , Rodembusch Fabiano S. , Braga Carolyne B. , Ornelas Catia , Pilli Ronaldo A. , Russowsky Dennis
Published: June 2020

A series of new hybrid fluorescent Biginelli compounds, including a Monastrol derivative, were designed and synthesized with good yields.
Synthesis, crystal structures, DFT studies, antibacterial assays and interaction assessments with biomolecules of new platinum(ii) complexes with adamantane derivatives
Authors: Pereira Anna Karla dos Santos , Manzano Carlos Marrote , Nakahata Douglas Hideki , Clavijo Juan Carlos Tenorio , Pereira Douglas Henrique , Lustri Wilton Rogério , Corbi Pedro Paulo
Published: June 2020

Synthesis, crystal structures and antibacterial activities of new Pt(ii) complexes with adamantane derivatives are presented in this article.
Crystal structures of N6-modified-amino acid nucleobase analogs(iii): adenine–valeric acid, adenine–hexanoic acid and adenine–gabapentine
Authors: García-Raso Angel , Terrón Angel , Balle Bartomeu , López-Zafra Adela , Frontera Antonio , Barceló-Oliver Miquel , Fiol Juan J.
Published: June 2020

H-bonding networks, anion–π and π–π interactions in the crystal structures of N6-modified-amino acid adenine analogs are investigated by means of DFT calculations and X-ray crystallography analysis.
Multi-stoichiometric quasi-two-dimensional WnO3n−1 tungsten oxides
Authors: Pirker Luka , Višić Bojana , Škapin Srečo D. , Dražić Goran , Kovač Janez , Remškar Maja
Published: June 2020

Quasi-two-dimensional tungsten oxide stoichiometric phases, W18O53, W17O50, W16O47, W15O44, W14O41, W10O29, and W9O26 were identified. It was determined that they nucleate by epitaxial growth on the W19O55 nanowires and grow as thin platelets.
Bi-MOF derived micro/meso-porous Bi@C nanoplates for high performance lithium-ion batteries
Authors: Kim Min-Kun , Kim Min-Seob , Park Jae-Hyuk , Kim Jin , Ahn Chi-Yeong , Jin Aihua , Mun Junyoung , Sung Yung-Eun
Published: June 2020

Micro/meso-porous Bi@C nanoplates are synthesized by pyrolyzing Bi-based MOFs prepared by a microwave-assisted hydrothermal method to overcome huge volume expansion and pulverization of anode materials during battery operation.
Luminescent lanthanide metal–organic framework nanoprobes: from fundamentals to bioapplications
Authors: Li Xingjun , Lu Shan , Tu Datao , Zheng Wei , Chen Xueyuan
Published: June 2020

This minireview summarizes the recent advances in the emerging field of luminescent Ln-MOF nanoprobes, covering from fundamental insights to bioapplications.
On the reciprocal relationship between σ-hole bonding and (anti)aromaticity gain in ketocyclopolyenes
Authors: Paudel Hari Ram , Karas Lucas José , Wu Judy I-Chia
Published: June 2020

σ-Hole bonding interactions (e.g., tetrel, pnictogen, chalcogen, and halogen bonding) can polarize π-electrons to enhance cyclic [4n] π-electron delocalization (i.e., antiaromaticity gain) or cyclic [4n + 2] π-electron delocalization (i.e., aromaticity gain).
Photoinitiators derived from natural product scaffolds: monochalcones in three-component photoinitiating systems and their applications in 3D printing
Authors: Chen Hong , Noirbent Guillaume , Sun Ke , Brunel Damien , Gigmes Didier , Morlet-Savary Fabrice , Zhang Yijun , Liu Shaohui , Xiao Pu , Dumur Frédéric , Lalevée Jacques
Published: June 2020

Design of new photoinitiators based on natural Chalcone scaffold.
Crosslinked metallo-polyelectrolytes with enhanced flexibility and dimensional stability for anion-exchange membranes
Authors: Zhu Tianyu , Tang Chuanbing
Published: June 2020

We report a class of crosslinked metallo-polyelectrolytes as anion exchange membranes with exceptional mechanical flexibility, dimensional stability and ionic conductivity.
Radical polymerization as a versatile tool for surface grafting of thin hydrogel films
Authors: Seidi Farzad , Zhao Weifeng , Xiao Huining , Jin Yongcan , Saeb Mohammad Reza , Zhao Changsheng
Published: June 2020

The surface of solid substrates is the main part that interacts with the environment.
Tuning the structure and the properties of dithiafulvene metalla-assembled tweezers
Authors: Dekhtiarenko Maksym , Krykun Serhii , Carré Vincent , Aubriet Frédéric , Canevet David , Allain Magali , Voitenko Zoia , Sallé Marc , Goeb Sébastien
Published: June 2020

An electroactive M2L2 metalla-macrocycle constructed through coordination driven self-assembly dimerizes upon oxidation and binds an electro-deficient substrate with a high association constant.
Facile one-pot synthesis of heterostructure SnO2/ZnO photocatalyst for enhanced photocatalytic degradation of organic dye
Authors: Uddin Md. Tamez , Hoque Md. Enamul , Chandra Bhoumick Mitun
Published: June 2020

In this work, heterostructure SnO2/ZnO nanocomposite photocatalyst was prepared by a straightforward one step polyol method.
Raman scattering and red emission of Mn4+ in La0.7Sr0.25Na0.05Mn0.7Ti0.3O3 manganite phosphor for LED applications
Authors: Raddaoui Z. , El Kossi S. , Smiri B. , Al-shahrani Thamraa , Dhahri J. , Belmabrouk H.
Published: June 2020

The vibrational and optical properties of an La0.7Sr0.25Na0.05Mn0.7Ti0.3O3 (LSNMT) polycrystalline sample produced via a solid-state reaction were studied.
Conversion between triplet pair states is controlled by molecular coupling in pentadithiophene thin films
Authors: Pace Natalie A. , Rugg Brandon K. , Chang Christopher H. , Reid Obadiah G. , Thorley Karl J. , Parkin Sean , Anthony John E. , Johnson Justin C.
Published: June 2020

Pentadithiophene derivatives produce triplet pairs efficiently with secondary spin state evolution that depends on their unique intermolecular juxtapositions.
Directed self-assembly of peptide–diketopyrrolopyrrole conjugates – a platform for bio-organic thin film preparation
Authors: Rani Aakanksha , Kavianinia Iman , Hume Paul , De Leon-Rodriguez Luis M. , Kihara Shinji , Williams David E. , McGillivray Duncan J. , Plank Natalie O. V. , Gerrard Juliet , Hodgkiss Justin M. , Brimble Margaret A.
Published: June 2020

Increased water solubility and long-range intermolecular ordering have been introduced into the fluorescent organic molecule thiophene-diketopyrrolopyrroleviaits conjugation to the octapeptide HEFISTAH, derived from a protein–protein β-interface.
Tuning d-band centers by coupling PdO nanoclusters to WO3 nanosheets to promote the oxygen reduction reaction
Authors: Lee Jun-Hyeong , Yim DaBin , Park Jung Hyun , Lee Chi Ho , Ju Jong-Min , Lee Sang Uck , Kim Jong-Ho
Published: June 2020

The direct conversion of 1T-WS2 into WO3 nanosheets by spontaneous deposition of PdO nanoclusters produces a PdO@WO3Sx electrocatalyst for the ORR.
Investigation on the role of amines in the liquefaction and recrystallization process of MAPbI3 perovskite
Authors: Feng Xi Yuan , Ng Kar Wei , Wang Shuang Peng , Chen Wen Zhou , Zhang Zhen Zhong , Chen Wei , Zhao Yun Yang , Tu Bao , Tang Zi Kang , Pan Hui , He Zhu Bing
Published: June 2020

This paper presents the detailed microscopic mechanism of the reversible liquefaction process, paving the way for high performance and recycling of perovskite devices.
An asymmetric Ti2CO/WS2heterostructure as a promising anchoring material for lithium–sulfur batteries
Authors: Fang Qin , Fang Min , Liu Xinyi , Yu Pengfei , Ren Ji-Chang , Li Shuang , Liu Wei
Published: June 2020

The unique asymmetric Ti2CO/WS2heterostructure with strong dipolar nature is competitive with other anchoring materials, because the “Janus” structures could balance the trapping ability (O-terminal side) and reaction kinetics (S-terminal side).
Long-range oxygen ordering linked to topotactic oxygen release in Pr2NiO4+δ fuel cell cathode material
Authors: Dutta Rajesh , Maity Avishek , Marsicano Anna , Ceretti Monica , Chernyshov Dmitry , Bosak Alexeï , Villesuzanne Antoine , Roth Georg , Perversi Giuditta , Paulus Werner
Published: June 2020

Complex oxygen ordering evidenced for the oxygen membrane cathode material Pr2NiO4.25 at room temperature with translational periodicities attaining almost 100 Å by single-crystal synchrotron diffraction studies.
High-efficiency organic solar cells enabled by halogenation of polymers based on 2D conjugated benzobis(thiazole)
Authors: Wen Shuguang , Li Yonghai , Zheng Nan , Raji Ibrahim Oladayo , Yang Chunpeng , Bao Xichang
Published: June 2020

A novel polymer based on 2D conjugated benzobis(thiazole) exhibits a high power conversion efficiency of 14.8% in an organic solar cell with IT-4F as the acceptor, with short circuit density and open circuit voltage well-balanced therein.
Electrostatic interactions regulate the release of small molecules from supramolecular hydrogels
Authors: Abraham Brittany L. , Toriki Ethan S. , Tucker N’Dea J. , Nilsson Bradley L.
Published: June 2020

Supramolecular hydrogels have great potential as biomaterials for sustained delivery of therapeutics.
Optically tunable mesoscale CdSe morphologiesviainorganic phototropic growth
Authors: Hamann Kathryn R. , Carim Azhar I. , Meier Madeline C. , Thompson Jonathan R. , Batara Nicolas A. , Yermolenko Ivan S. , Atwater Harry A. , Lewis Nathan S.
Published: June 2020

Inorganic phototropic growth, a maskless, lithography-free process, enabled generation of CdSe films with highly ordered, optically-defined nanotextures over macroscale areas.
van der Waals integration of AZO/MoS2 ohmic junctions toward high-performance transparent 2D electronics
Authors: Guo Tao , Wu Hao , Chen Xue , Tang Qi , Wan Jiaxian , Guo Quanbing , Jia Shuangfeng , Liu Chang
Published: June 2020

An ideal AZO–MoS2 ohmic junction has been achieved, which provides transparent transistors with excellent electrical performance.
The origin, evolution and diversification of multiple isoforms of light-dependent protochlorophyllide oxidoreductase (LPOR): focus on angiosperms
Authors: Gabruk Michal , Mysliwa-Kurdziel Beata
Published: June 2020

Light-dependent protochlorophyllide oxidoreductase (LPOR) catalyzes the reduction of protochlorophyllide to chlorophyllide, which is a key reaction for angiosperm development. Dark operative light-independent protochlorophyllide oxidoreductase (DPOR) is the other enzyme able to catalyze this reaction, however, it is not present in angiosperms. LPOR, which evolved later than DPOR, requires light to trigger the reaction. The ancestors of angiosperms lost DPOR genes and duplicated the LPORs, however, the LPOR evolution in angiosperms has not been yet investigated. In the present study, we built a phylogenetic tree using 557 nucleotide sequences of LPORs from both bacteria and plants to uncover the evolution of LPOR. The tree revealed that all modern sequences of LPOR diverged from a single sequence ∼1.36 billion years ago. The LPOR gene was then duplicated at least 10 times in angiosperms, leading to the formation of two or even more LPOR isoforms in multiple species. In the case of Arabidopsis thaliana, AtPORA and AtPORB originated in one duplication event, in contrary to the isoform AtPORC, which diverged first. We performed biochemical characterization of these isoforms in vitro, revealing differences in the lipid-driven properties. The results prone us to hypothesize that duplication events of LPOR gave rise to the isoforms having different lipid-driven activity, which may predispose them for functioning in different locations in plastids. Moreover, we showed that LPOR from Synechocystis operated in the lipid-independent manner, revealing differences between bacterial and plant LPORs. Based on the presented results, we propose a novel classification of LPOR enzymes based on their biochemical properties and phylogenetic relationships.
Perceived Professional and Institutional Factors Influencing Clinical Adoption of Pharyngeal High-Resolution Manometry
Authors: Rogus-Pulia Nicole M. , Jones Corinne A. , Forgues Angela L. , Orne Jason , Macdonald Cameron L. , Connor Nadine P. , McCulloch Timothy M.
Published: June 2020

Purpose

We assessed experienced clinicians' perceptions of benefits and drawbacks to the clinical adoption of pharyngeal high-resolution manometry (HRM). This article focuses on the professional and institutional factors that influence the clinical adoption of pharyngeal HRM by speech-language pathologists (SLPs).

Method

Two surveys (closed- and open-ended questions) and a series of focus groups were completed with SLP members of both the American Speech-Language-Hearing Association and the Dysphagia Research Society (DRS). Transcripts were inductively coded for emergent themes.

Results

Thirteen SLPs were recruited to attend focus group sessions at the American Speech-Language-Hearing Association. Eighty-seven SLPs responded to the DRS open-set response survey. Two additional focus groups of 11 SLPs were convened at the DRS meeting. Conventional content analysis revealed overall SLP enthusiasm for the clinical use of HRM, with some concerns about the technology adoption process. The following themes related to the professional and institutional factors influencing clinical adoption were identified: (a) scope of practice, (b) access, (c) clinical workflow, and (d) reimbursement.

Conclusion

These data serve to elucidate the most salient factors relating to the clinical adoption of pharyngeal HRM into routine speech-language pathology clinical practice. While enthusiasm exists, a variety of systems-level issues must be addressed to support this process.
Robust model predictive control based on recurrent multi‐dimensional Taylor network for discrete‐time non‐linear time‐delay systems
Authors: Duan Zheng‐Yi , Yan Hong‐Sen , Zheng Xiao‐Yi
Published: June 2020

This study is concerned with the robust model predictive control (MPC) based on recurrent multi‐dimensional Taylor network (RMTN) for the discrete‐time non‐linear time‐delay systems. Regarding the MPC algorithm for the discrete‐time time‐delay systems, the existing literature only considers the linear case. In this study, by designing the suitable terminal cost and terminal region, the MPC scheme is firstly investigated for the non‐linear case. Meanwhile, to reduce the computational burden of MPC using the existing model types (e.g. recurrent neural network) as the identified model, an RMTN possessing the concise structure and high computational efficiency is constructed to approximate the state‐space model of the system. After trained by the backpropagation through time algorithm, the RMTN obtaining the high accuracy of prediction over a long‐range horizon is capable of serving as the prediction model in the MPC scheme. Furthermore, aiming at alleviating the adverse effect of the inevitable identification error, the tube‐based MPC is proposed via leveraging dual‐mode MPC to guarantee that actual trajectory is contained within a robust tube. The stability of the considered system is proved theoretically, and numerical simulation is employed to validate the effectiveness of the proposed method.
Non‐isolated bidirectional DC–DC converters with multi‐converter functionality employing novel start‐up and mode transition techniques
Authors: Sharma Ambuj , Nag Soumya Shubhra , Bhuvaneswari Gurumoorthy , Veerachary Mummadi
Published: June 2020

This work targets reducing the mode transition time drastically, for two of the bidirectional DC–DC converters (BDCs) employed in energy storage systems, simultaneously proposing a smooth start‐up process. Two different mode transition techniques are introduced for topology A (proposed) and topology B, respectively, whose transition times are much smaller than the existing transition techniques. Topologies A and B are capable of performing all basic converter operations, i.e. buck, boost, inverting buck–boost and non‐inverting buck–boost in bidirectional mode, which allows the operating voltage ranges of both V 1 and V 2 to be increased perceivably. Both topologies are compared based on mode transition methodology, stress on the converter switches, inductor size and rating. A start‐up technique is also advocated for both topologies so that the start‐up response could be smooth. Two 400 W BDCs are designed with voltage levels of 60 and 120 V and experimentally verified for efficient start‐up, mode transition and steady‐state operations. Both mode‐transition techniques proposed here, take 2 μs for the current reversal on the battery side from +5 to −5 A.
High step‐up dc–dc converter based on modified active switched‐inductor and switched‐capacitor cells
Authors: Melo de Andrade Jessika , Coelho Roberto Francisco , Lazzarin Telles Brunelli
Published: June 2020

A new high gain step‐up dc–dc converter based on modified active switched‐inductor (MASL) and switched‐capacitor (SC) is proposed in this study. The proposed converter is based on the classical boost topology, in which the inductor is changed by the proposed MASL cell. This new cell allows the addition of more than two switched‐inductors (SLs) to the classical boost topology, which is the most significant limitation of conventional active SL. Additionally, in the proposed converter, the output capacitor is replaced by an SC cell, increasing still more the voltage gain of it, which can be higher than 20 without using transformers or coupled inductors, and with lower voltage stress on the semiconductors and high efficiency. The principle of operation, theoretical static and dynamic analysis, design methodology and comparison with other non‐isolated topologies present in the literature are approached in this study. The performance of the proposed converter is validated by interesting experimental results obtained from a 200 W prototype with an input voltage of 20 V, an output voltage of 400–600 V, switched frequency at 50 kHz and peak efficiency of 95%.
Multi‐mode fault‐tolerant control strategy for cascaded H‐bridge multilevel inverters
Authors: Wang Tianzhen , Zhang Jiahui , Wang Han , Wang Yide , Diallo Demba , Benbouzid Mohamed
Published: June 2020

This study proposes a multi‐mode fault‐tolerant control (FTC) strategy, for cascaded H‐bridge multilevel inverters, to provide the most suitable fault tolerance scheme for different single or double arbitrary insulated gate bipolar transistor (IGBT) faults. Firstly, all faulty modes are classified into three fault clusters according to the number and location of faulty IGBTs. Then, the matching mechanism of the multi‐mode FTC strategy corresponding to the three clusters is described, and the appropriate FTC algorithm is selected for each cluster. In particular, a new FTC method has been proposed for Cluster I that includes double IGBT fault in different H‐bridges and different groups. This method improves the utilisation efficiency of healthy IGBTs in the faulty H‐bridges, and minimises the voltage level drop after the fault. Finally, the multi‐mode FTC strategy has been applied to a seven‐level inverter through simulation. Results have shown significant improvement of the output voltage waveform symmetry and harmonic distortion reduction for the three clusters. The new FTC method has been applied to an experimental five‐level inverter. The obtained results confirm the validity of the methodology. With the proposed strategy, the output voltage has a lower harmonic distortion and a better symmetry thanks to the attenuation of the undesirable DC component.
The soft excess of the NLS1 galaxy Mrk 359 studied with an XMM-Newton-NuSTAR monitoring campaign
Authors: Middei R. , Petrucci P.-O. , Bianchi S. , Ursini F. , Cappi M. , Clavel M. , De Rosa A. , Marinucci A. , Matt G. , Tortosa A.
Published: June 2020

Context. Joint XMM-Newton and NuSTAR multiple exposures allow us to disentangle the different emission components of active galactic nuclei (AGNs) and to study the evolution of their different spectral features. In this work, we present the timing and spectral properties of five simultaneous XMM-NewtonandNuSTAR observations of the Narrow Line Seyfert 1 galaxy Mrk 359.

Aims. We aim to provide the first broadband spectral modeling of Mrk 359 describing its emission spectrum from the UV up to the hard X-rays.

Methods. We performed temporal and spectral data analysis, characterising the amplitude and spectral changes of the Mrk 359 time series and computing the 2–10 keV normalised excess variance. The spectral broadband modelling assumes the standard hot Comptonising corona and reflection component, while for the soft excess we tested two different models: a warm, optically thick Comptonising corona (the two-corona model) and a reflection model in which the soft-excess is the result of a blurred reflected continuum and line emission (the reflection model).

Results. High and low flux states were observed during the campaign. The former state has a softer spectral shape, while the latter shows a harder one. The photon index is in the 1.75–1.89 range, and only a lower limit to the hot-corona electron temperature can be found. A constant reflection component, likely associated with distant matter, is observed. Regarding the soft excess, we found that among the reflection models we tested, the one providing the better fit (reduced χ2 = 1.14) is the high-density one. However, a significantly better fit (reduced χ2 = 1.08) is found by modelling the soft excess with a warm Comptonisation model.

Conclusions. The present analysis suggests the two-corona model as the best scenario for the optical-UV to X-ray emission spectrum of Mrk 359.
Designing a methodological concept for the diagnosis of early development of the main wheat diseases pathogens
Authors: Kremneva Oksana , Danilov Roman , Tutubalina Olga , Sereda Igor , Artem Kurilov
Published: June 2020

The studies presented in the article were carried out in 2018-2019 on the experimental field of the All-Russian Research Institute of Biological Plant Protection. The aim of the research was to assess the feasibility of diagnosing the early development of major diseases pathogens based on the results of ground-based spectrometry and the use of phytomonitoring technology, taking into account the genotypes of different winter wheat varieties. There were three options of the experimental plots for the research: the 1st – protected against diseases by fungicides, the 2nd – with an artificial infectious background, the 3rd – with the natural development of diseases. According to the results of data analysis, the most significant changes in the spectral characteristics of the studied plant backgrounds were noted at the time of the first signs of disease in the form of a decrease in the spectral brightness coefficient in the near infrared range. Using special tools in the experimental plots, the following pathogens were identified before the appearing of disease symptoms: Blumeria graminis (DC.) Speer f. sp. tritici Marchal , Puccinia striiformis West., Pyrenophora tritici-repentis Died., Puccinia triticina Erikss. Data on the diseases development, plant infestation by pathogens are compared with spectrometric measurements.
Development of precision methods for remote monitoring of weeds
Authors: Danilov Roman , Zelensky Roman , Ponomarev Artyom , Ivanisova Mariya , Gasiyan Kseniya
Published: June 2020

As a result of hyperspectral measurements carried out on the test plots of the All-Russian Research Institute of Biological Plant Protection, we obtained the reflection spectra of individual cultivated and weed species. Along with the ground-based measurements, trials of the GEOSCAN drone equipped with a Gamaya hyperspectral camera were organized. We developed a database of spectral characteristics of weeds. The change in the shape of the spectral signatures of the reflectivity of plant objects depending on their actual condition, taken into account during field surveys, was analyzed. An analysis of the spectral curves showed that the results of field spectrometry are in good agreement with aerial survey data.
Trophic connections of the brown marmorated stink bug Halyomorpha halys Stål in the conditions of the invasive area on the Black Sea coast of the Caucasus
Authors: Zakharchenko Vilena , Karpun Natalia , Borisov Boris
Published: June 2020

Brown marmorated stink bug Halyomorpha halys (Stål, 1855) is a highly aggressive crop pest that has appeared in Russia since 2014. Under the conditions of a new invasive species area, it is important to study the characteristics of the pest biology, including the study of the range of trophic plants. The studies were carried out in the zone of humid subtropics of the Black Sea coast of the Caucasus in 2014-2019. The study of trophic connections was carried out in the course of regular surveys of the region’s phytocenoses, including agrocenoses, landscape gardening and forest stands. During the observation period, the number of fodder plants of the brown marmorated stink bug was 107 species from 48 botanical families. The most diverse fodder plants of the Fabaceae, Rosaceae, Rutaceae, Sapindaceae and Solanaceae families. Among the food plants of H. halys, conifers are noted. It was Metasequoia glyptostroboides Hu & W.C. Cheng and Taxodium mucronatum Ten. Migration ways of brown marmorated stink bug from forest plantations to agrocenoses, gardens and city parks have been established. Such movements allows the pest to eat variably and to wait for adverse conditions.
Molecular genetic analysis and phenology of the plane lace bug Corythucha ciliata Say (Hemiptera: Tingidae) in different parts of Krasnodar Krai
Authors: Besedina Ekaterina , Kil Vladimir , Ismailov Vladimir , Karpunina Maria
Published: June 2020

The article presents the results of studying the phenology and dynamics of the number of plane lace bug Corythucha ciliata Say. RAPD analysis of geographic populations of plane lace bug from various parts of Krasnodar Krai revealed a high level of DNA polymorphism, genetic diversity, genetic similarity and the absence of significant differences between the samples for these indicators. It shows that the majority of the genetic variation (90.2 %) is intrapopulation, while the interpopulation variation accounts for 9.8 % of the total. A significant drift of genes was revealed between the populations of C. ciliata (Nm = 4.56) and a high degree of genetic similarity between them at the intraspecific level. The analyzed insect samples are concluded to be subpopulations of one plane lace bug population.
Marker assisted rice breeding for resistance to biotic and abiotic stressors
Authors: Dubina Elena , Kostylev Pavel , Garkusha Sergey , Ruban Margarita , Pischenko Dmitry
Published: June 2020

Due to the fact that blast (causative agent –Pyricularia oryzae Cav.)is considered to be one of the harmful diseases of rice around the world, weeds compete with the crop for light, mineral nutrition and space, the accelerated development of resistant genotypes for these stressors is very relevant. The use of modern biotechnological approaches (molecular marking) is promising and especially in demand in breeding rice varieties of a new generation. This article presents the results on the introduction and pyramiding in the same genotype blast resistance genesPi-1, Pi-2, Pi-33, Pi-ta, Pi-b, Pi-40and the gene for tolerance to prolonged floodingSub 1A,as a weed control factor, based on domestic rice varieties Flagman, Snezhinka, Novator, Boyarin, as well as large-grain lines, with a short growing season VNIIR5242, KP-25-14, KP-163 and VNIIR9678. As a result of the volumetric work using marker control of target genes in the genotypes of hybrid plants, 4 modern varietal samples and more than 400 backcross self-pollinated rice lines with introduced and pyramided blast resistance genes, as well as backcross self-pollinated lines withPiandSub1Agenes, were obtained. These plants are adapted for cultivation in the south of Russia, have a duration of 115-117 days, a height of 87-100 cm, a mass of 1000 grains – 30 or more grams, a yield of 8.5 – 11 t/ha, which is significantly higher than that of the standard variety Flagman.
PCR identification of genes of resistance to black rot in white cabbage using SSR-markers
Authors: Makukha Yuliya
Published: June 2020

The present study revealed the polymorphism of SSR loci by the resistance of white cabbage to black rot in contrasting isogenic samples of white cabbage. 2 informative SSR markers were selected: Ol10-C01 and Ol11-H06 for ranking breeding samples based on resistance to Xanthomonas campestris pv. campestris Dows. The microsatellite marker Ol10-C01 was tested on breeding samples and reveals polymorphism between them; therefore, it can be recommended for practical breeding for programs to develop black rot-resistant hybrids of cabbage, which will solve the problem of import substitution and healthy food (environmentally friendly products, grown without the use of means of chemical protection).
Prospects for the use of the tomato genetic collection of the FSBSI ARRIBPP to develop varieties with group resistance to Alternaria sp. and Phytophthora infestans (Mont.) de Bary.
Authors: Nekoval Svetlana , Belyaeva Anastasia , Maskalenko Oksana , Sadovaya Anastasia , Churikova Arina
Published: June 2020

The resistance of mutant tomato lines to the main diseases upon the provocative infectious background was assessed. We used as experimental material 22 lines of the tomato genetic collection of the FSBSI ARRIBPP, Krasnodar. According to the results of assessing the damage by Alternaria sp. in the field it was found that line 41 exhibitted high resistance, there were no signs of disease damage. Mutant lines 80, 387, 434, 568, 620 showed resistance, the degree of the disease development varied within 1–8 %. Lines 172, 467, 509, 518 with a degree of development of 12–23 % were characterized by semi-resistance. Lines 41, 387 showed high resistance to P. infestans. No visible signs of damage by P. infestans were detected in these genotypes. Lines 341, 509, 518, 568 had semi-resistance to the pathogen, the degree of development varied from 10 to 18 %. The genotypes Mo 41 and 387 that showed high and relatively high resistance to Alternaria sp. and P. infestans are of the greatest interest for breeding and genetic work as sources of group resistance.
Efficacy of plant resistance inducers on cereal crops against a complex of pathogens
Authors: Matveeva Irina , Danilova Anastasia , Kim Yuriy , Miroshnichenko Olesya , Grigoriev Alexander
Published: June 2020

The article describes the benefits of using plant resistance inducers on cereal crops and the basic principles of their impact on pests development (Pyrenophora tritici-repentis, Puccinia triticina, Puccinia striiformis, Puccinia graminis, Puccinia hordei). The assessment results of the biological and economic effectiveness of L-479 and DL-59 preparations are presented in comparison with the chemical Kolosal,CE and biological Albit, which were used as standards for reducing the development of yellow leaf spot and rust diseases. L-479 product was found to be the most effective on wheat against brown, yellow and stem rust, and yellow leaf spot. Its biological efficacy ranged from 48.3 % to 57.0 % depending on the pathogen, and the increase in grain yield ranged from 3.7 % to 22.1 %. DL-59 product showed the best biological efficacy against dwarf leaf rust of barley – 89.8 %, the increase in grain yield was 3.5 %.
Study of the influence of barley varieties with different resistance to barley net blotch on the change in the structure of the hemibiotrophic pathogen population by morphological and cultural characteristics and virulence
Authors: Volkova Galina , Yakhnik Yana , Smirnova Alena , Klychnikov Egor
Published: June 2020

The study is devoted to the analysis of the correlation of morphological and cultural characteristics and virulence of Pyrenophora teres Drechs. isolates, and various resistance to the pathogen of barley varieties (Versal, Kubagro-1, Romance). The main morphological types of colonies of the fungus isolates obtained from the barley varieties with different resistance were determined. It was found that the higher degree of resistance of the variety, the faster growth rate of colonies, the intensity of sporulation and heterogeneity of the population on the basis of virulence increase. The most common races were detected in the populations of P. teres isolated from different varieties of barley. We found that the selection for the virulence of the pathogen population in Versal variety with a high level of non-specific resistance was carried out with a wider spectrum of diversity.
Biological protection of plum from shot hole disease in the humid subtropics of the Krasnodar region (Russia)
Authors: Leonov Nikolai , Bulgakov Timur
Published: June 2020

The article considers the biologization of plum trees protection system from shot hole disease caused by the phytopathogenic fungusWilsonomyces carpophilusin the humid subtropics of the Krasnodar region. Several biological fungicides based on different strains of the bacteriumBacillus subtilis(Alirin-B®, Bactophyt®, Gamair®, Phytosporin-M®, Vitaplan®), the bacteriumPseudomonas fluorescens(Rhizoplan®) and the fungusTrichoderma harzianum(Glyocladin® and Trichocin®) were tested on Stanley plum trees at the experimental base of the Federal Research Centre the Subtropical Scientific Centre of the Russian Academy of Sciences (Sochi) in 2015–2017. According to seasonal features of shot hole disease and the results of experiments, the optimal timetable schedule for plum treatment with the fungicides was found (3 treatments in May–June).
Development of the elements of the biological system for protecting crops against the southern green stink bug Nezara viridula L. (Hemiptera: Pentatomidae) in Krasnodar Krai
Authors: Pushnya Marina , Rodionova Elena , Snesareva Ekaterina
Published: June 2020

The article considers the issues related to the development of the methods of biological crop protection against the adventive species of pentatomides (Pentatomidae, Hemiptera) – the southern green stink bug Nezara viridula L. 1758. One of the main factors contributing to the significant spread of this multinucleated pest is the lack of effective control systems of this species, in particular, poor knowledge of local entomophages species. A number of the biological peculiarities of a stinkbug has been studied. For the first time in the Russian Federation, infection of the N. viridula eggs with the entomophage Trissolcus basalis Woll. 1858 (Hymenoptera: Scelionidae) was determined We found that to control Nezara in such crops as soybeans, tomatoes and tobacco, it is possible to use the Fitoverm-M preparation (active ingredient – aversectin-C, 2 g/l).