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Supramolecular Bonding Competition Enabled Nanostructure Evolution and mechanical Reinforcement

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CCS Chemistry 2024年第1期6卷 157-164页

作者： Yuting Wang Peng meng aidan Brock Yanan Xu Hang meng Zixuan Liu Kan Zhang John mcmurtrie Jingsan Xu School of Chemistry and Physics and Centre for materials Science Queensland University of TechnologyBrisbaneQueensland 4000 Central Analytical Research Facility Institute for Future EnvironmentsQueensland University of TechnologyBrisbaneQueensland 4000 State Key Laboratory of Superhard materials Department of Materials Science and Key Laboratory of Automobile MaterialsMOEJilin UniversityChangchun 130012

In this work,competition between different supramolecular interactions is investigated based on a fibrous crystal composed of hydrogen-bonded cyanuric acid(CA)and amidinothiourea(ADT).melamine(m)is found to prevail over ADT and bond to CA due to its stronger triple H-bonding affiliation,forming hollow microtubes assembled by oriented CAm crystalline arrays,as guided by the directionality of peripheral hydrogen ***,competitive interaction between hydrogen bonding and ionic/covalent bonding is demonstrated by mixing Ag+ions with the CA-ADT fibers,where sulfur atoms are abstracted from ADT molecules to produce Ag_(2)S *** in situ-formed Ag_(2)S serves as a binding glue to generate CA-ADT/Ag_(2)S composites with significantly enhanced mechanical strength compared to the pristine CA-ADT fiber pellet.

关键词： supramolecular interaction hydrogen bonds chemical bond competition hollow crystal array organic-inorganic composite

Submonolayer Eu superstructures—A class of 2D magnets

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Nano Research 2023年第1期16卷 1500-1506页

作者： Dmitry V.Averyanov Ivan S.sokolov Alexander N.Taldenkov Oleg E.Parfenov Andrey m.Tokmachev Vyacheslav G.Storchak National Research Center“Kurchatov Institute” Kurchatov Sq.1Moscow 123182Russia

Two-dimensional(2D)magnetic materials promise unconventional properties and quantum phases as well as advances in ultracompact *** of 2D magnets often reaches a single monolayer but in general can go beyond this limit,as demonstrated by 2D magnetism of submonolayer Eu superstructures coupled with *** question is whether the submonolayer magnetism constitutes a general ***,we demonstrate that regular Eu lattices form a class of 2D magnets displaying various structures,stoichiometries,and chemical *** synthesized and studied a set of Eu superstructures on Ge(001).Their magnetic properties are consistent with the emergence of a magnetic order such as ferro-or *** particular,control over the magnetic transition temperature by weak magnetic fields indicates the 2D nature of the *** together,Eu/Ge and Eu/Si superstructures seed a nucleus of the research area addressing the emergence of magnetism in submonolayer chemical species.

关键词： two-dimensional(2D)magnetism submonolayer superstructure surface reconstruction germanium

A class of high-mobility layered nanomaterials by design

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Journal of materials Science & Technology 2023年第33期164卷 179-187页

作者： Dmitry V.Averyanov Ivan S.sokolov Oleg E.Parfenov Alexander N.Taldenkov Oleg A.Kondratev Andrey m.Tokmachev Vyacheslav G.Storchak National Research Center “Kurchatov Institute” Kurchatov Sq.1Moscow 123182Russia

Design of materials with particular functional properties is indispensable albeit very *** and structural analogies can be helpful in this endeavor,especially when a particular combination of properties is sought *** aim is to bundle together 3 characteristics:high carrier mobility,magnetism,and scalability to nanomaterials in the form of a film–such a combination is particularly advantageous for ***,inspired by recent studies of mAl_(2)Si_(2)and related compounds,we develop magnetic EuAl_(2)Ge_(2)and non-magnetic SrAl_(2)Ge_(2)nanomaterials with high carrier *** syntheses employing sacrificial 2D templates result in epitaxial films of mAl_(2)Ge_(2)seamlessly integrated with *** syntheses are followed by a study of the atomic structure,magnetic and electron transport *** particular,the films demonstrate high carrier mobility,exceeding 10,000 cm^(2)V^(-1)s^(-1)in the case of EuAl_(2)Ge_(2),making the materials appealing for *** together,mAl_(2)Ge_(2)and mAl_(2)Si_(2)form a class of high-mobility layered nanomaterials.

关键词： High carrier mobility magnetism SrAl_(2)Ge_(2) EuAl_(2)Ge_(2) Germanium

Biological protection of plants in agricultular landscape—state of the art, problems and ways of their decision

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浙江大学学报（农业与生命科学版） 2004年第4期30卷 398-400页

作者： sokolov m S Kolombet L V Research Center for Toxicology and Hygienic Regulation of Biopreparations State Research Center for Applied Microbiology 142279 Obolensk Moscow Region Russia 142253 Serpukhov Moscow reg. Russia

Biological protection of plants: definition and objectives. Technologically, biological protection of plants (hereinafter bioprotection) is a high agricultural technology involving agricultural landscape approach and basee on an ecological imperative, namely “use living beings against living beings”. In a wide sense, present-day bioprotection is a fundamental and applied field of knowledge providing harmless suppression of harmful agents during cultivation and storage of agricultural crops by use natural and (or) artificially constructed organisms (including genetically modified ones having pesticidal properties) and products of their live cycle. The overall objective of bioprotection consists in producing harmless, profitable and high-quality vegetative raw material, food, fodder. At the same time, bioprotection agrotechnologies are important environment forming and environment maintaining factors, steady and positively influencing the health of both rural ethnos, and agrosphere as a whole. Realization of integrated bioprotection approaches should provide minimum destruction of beneficial and non-target organisms, excluding the succession of harmful species and appearance of species resistant to biocontrol agents. 2. Theoretical foundation of bioprotection. The following postulates and imperatives of biosphere science, agrarian and social ecology make the scientific basis of bioprotection: “The Nature knows the how and why of things better”; Steady, balanced development of agrosphere (proceeding from a presumption of life support) is based on biocentrism and biosystem relations, or consortism of its consorbents; Control of the agrosphere by human beings could be effective only in case of primary realization of biocenotic regulation; Biocenotic regulation, dynamics of the number and species diversity of agrosphere is realized through trophically similar cenoconsorcia and tritrophic systems, that provides maintenance and preservation of trophically proved critica

关键词：植物生物保护农业景观农业气候设施园艺

High nymphal host density and mortality negatively impact parasitoid complex during an insect herbivore outbreak

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Insect Science 2019年第2期26卷 351-365页

作者： aidan A. G. Hall Scott N. Johnson James m. Cook markus Riegler Hawkesbury Institute for the Environment Western Sydney University NSW Australia

Insect herbivore outbreaks frequently occur and this may be due to factors that restrict top-down control by parasitoids, for example, host-parasitoid asynchrony, hyperparasitization, resource limitation and climate. Few studies have examined hostparasitoid density relationships during an in sect herbivore outbreak in a n atural ecosystem with diverse parasitoids. We studied parasitization patterns of Cardiaspina psyllids during an outbreak in a Eucalyptus woodland. First, we established the trophic roles of the parasitoids through a species-specific multiplex PCR approach on mummies from which parasitoids emerged. Then, we assessed host-parasitoid density relationships across three spatial scales (leaf, tree and site) over one yeas We detected four endoparasitoid species of the family Encyrtidae (Hymenoptera);two primary parasitoid and one heteronomous hyperparasitoid Psyllaephagus species (the latter with female development as a primary parasitoid and male development as a hyperparasitoid), and the hyperparasitoid Coccidoctonuspsyllae. Parasitoid development was host-synchronized, although synchrony between sites appeared constrained during winter (due to temperature differences). Parasitization was predominantly driven by one primary parasitoid species and was mostly inversely host-density dependent across the spatial scales. Hyperparasitization by C. psyllae was psyllid-density dependent at the site scale, however, this only impacted the rarer primary parasitoid. High larval parasitoid mortality due to density-dependent nymphal psyllid mortality (a consequence of resource limitation) compounded by a summer heat wave was incorporated in the assessment and resulted in density independence of host-parasitoid relationships. As such, high larval parasitoid mortality during insect herbivore outbreaks may contribute to the absence of host density-dependent parasitization during outbreak events.

关键词： density-dependent mortality insect outbreak psyllid synchronization temperature trophic interactions

Amiodarone hepatotoxicity complicating obstructive jaundice due to ampullary cancer

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Hepatobiliary & Pancreatic Diseases International 2007年第4期6卷 435-437页

作者： Anne m Collins Des C Winter aidan P mcCormick David C Cottell Justin G Geoghegan Department of Surgery and Hepatology St. Vincent's University Hospital Dublin 4 Ireland Electron microscopy Laboratory Conway Institute University College Dublin Belfield Dublin 4Ireland

BACKGROUND:The presence of dual pathology can cause diagnostic dilemmas. We present a case of adenocarcinoma of the ampulla of Vater with concurrent amiodarone hepatotoxicity. mETHODS:Painless jaundice associated with a palpable gallbladder was investigated clinically,radiologically endoscopically and via liver biopsy. RESULTS:Liver biopsy showed amiodarone hepatotoxicity Endoscopic biopsy identified an ampullary adenoma However,the endoscopic ultrasound and intra-operative findings suggested a malignancy,which was confirmed postoperatively. CONCLUSIONS:While the classic findings of Courvoisier’s Law are borne out in this case,the etiology of jaundice is twofold. Although dual pathology is uncommon it should always be considered.

关键词： ampulla of Vater adenocarcinoma amiodarone hepatotoxicity dual pathology

Preparation on the basis of Trichoderma asperellum in the system of biological protection of wheat from Fusarium ear scab

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浙江大学学报（农业与生命科学版） 2004年第4期30卷 394-395页

作者： Kolombet L V sokolov m S Chuprina V P Schisler D A Samuels G J State Research Center for Applied microbiology Obolensk Moscow Region RussiaResearch Center of Toxicology and Hygienic Regulation of Biological Products Serpukhov RussiaAll-Russia Research Institute of Biological Plant Disease Control Krasnodar Russia USDA-ARS NCAUR Peoria Illinois USA USDA-ARS Systematic Botany and Mycology Lab. Beltsville USA

During the last century, as the area of wheat grown under advanced grain husbandry has increased worldwide, so too has the importance of Fusarium ear scab (FES) (synonym, Fusarium head blight) caused by several species of the fungus Fusarium. Yield losses due to FES can total 20%-40% and more depending on climatic conditions. During the last twenty years epidemics of FES in cereals have become chronic all over the world, including the United States and Russia. The most destructive of these were observed in 1982, 1986, 1990-1996 in USA and in the south of Russia in 1982, 1984, 1988, 1992. The harmful effect of FES is manifested not only in reduced grain yields, but also in the contamination of grains and grain products with mycotoxins, such as deoxynivalenol (DON) and its derivatives (3-alfa acetyl-DON, 15-alfa acetyl-DON), T-2 toxin and zearalenone. Standard means to control FES (cultural control methodologies, chemical pesticides, and FES resistant varieties) have little effect or are not practical and rarely reduce the accumulation of mycotoxins in grain. We have developed a new technique to reduce FES using biological preparations. The technique utilizes wheat seed pretreatment with a biofungicide “mycol” in combination with spraying wheat plants during flowering with a yeast preparation. Technology for production of mycol on the basis of Trichoderma asperellum strain GJS 03-35 (systematics by Samuels) has been developed. This strain shows hyperparasitic activity against a wide spectrum of plant pathogens, including Fusarium graminearum, a causative agent of FES in wheat. Experiments conducted in the United States demonstrated that spraying wheat plants during flowering with the patented yeast Cryptococcus nodaensis OH 182.9 (NRRL Y-30216) reliably reduces FES development. Tests of the mycol preparation and the yeast OH 182.9 (EOD) have been performed on the spring wheat “Ivolga” in greenhouse conditions (the moscow region) and on the winter wheat “Kupava” in fie

关键词：曲霉素木霉素镰刀霉穗痂病小麦生物防治

Preparation on the basis of Trichoderma asperellum in the system of biological protection of wheat from Fusarium ear scab

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浙江大学学报(农业与生命科学版) 2004年第4期 44-45页

作者： Kolombet L V,sokolov m S,Chuprina V P,Schisler D A,Samuels G J State Research Center for Applied microbiology Obolensk moscow Region Russia Research Center of Toxicology and Hygienic Regulation of Biological Products Serpukhov Russia All-Russia Research Institute of Biological Plant Disease Control Krasnodar Russia USDA-ARS NCAUR Peoria Illinois USA USDA-ARS Systematic Botany and mycology Lab. Beltsville USA

关键词： Fusarium ear scab (FES) Fusarium head blight mycotoxins deoxynivalenol (DON) biofungicide “mycol” Trichoderma asperellum strain GJS 03-35 yeast Cryptococcus nodaensis OH 182.9 (NRRL. Y-30216) biocontrol

mechanism and kinetics of iron extraction from high silica boehmite−kaolinite bauxite by hydrochloric acid leaching

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Transactions of Nonferrous metals Society of China 2021年第10期31卷 3128-3149页

作者： Dmitry VALEEV Denis PANKRATOV Andrei SHOPPERT Artem.sokolov Alexandr KASIKOV Alexandra mIKHAILOVA Cristian SALAZAR-CONCHA Ilia RODIONOV Laboratory of Sorption methods Vernadsky Institute of Geochemistry and Analytical Chemistry of the Russian Academy of Sciences119334 MoscowRussia Department of Chemistry Lomonosov Moscow State University119991 MoscowRussia Department of Non-ferrous metals metallurgy Ural Federal University620002 YekaterinburgRussia Tananaev Institute of Chemistry Kola Science Centre of the Russian Academy of Sciences184209 ApatityRussia Laboratory of Crystal Structure Studies A.A.Baikov Institute of Metallurgy and Materials ScienceRussian Academy of Sciences119334 MoscowRussia Universidad Austral de Chile ValdiviaChile Graphite Innovation and Technologies Dartmouth NSCanada

The chemical and mineral compositions of bauxite recovered from the Severoonezhsk Bauxite mine(Arkhangelsk region,Russia)were studied by XRD,ICP-OES,TG/DSC,SEm,TEm,and mössbauer *** iron-containing minerals of the bauxites were found to comprise alumogoethite(α-Fe_(1−x)Al_(x)OOH),alumohematite(α-(Fe_(1−x)Al_(x))_(2)O_(3)),alumoakaganeite(β-Fe_(1−x)Al_(x)O(OH,Cl)),and chromite(FeCr_(2)O_(4)).The efficiency of Fe extraction from the bauxite by HCl leaching was 82.5%at 100℃,HCl concentration of 10%,solid/liquid ratio of 1:10,and the process duration of 60 min,with aluminum loss from the bauxites below 4.5%of the total Al contents in the *** of the kinetics of the iron leaching process proved diffusion to be the limiting stage of the process at 90−100℃.Bauxite residue after leaching presented traces of α-Fe_(1−x)Al_(x)OOH and β-Fe_(1−x)Al_(x)O(OH,Cl),and most of the iron content was in the FeCr_(2)O_(4).In bauxite residue after HCl leaching,in addition to iron oxide,the contents of chromium and calcium oxides significantly *** iron chloride liquor after leaching contained the rare earth elements(REE)of 6.8 mg/L Sc,4.1 mg/L Ce and 2.3 mg/L Ga.

关键词： bauxite acid leaching iron extraction kinetics mössbauer spectroscopy