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Effect of relative humidity on the desulfurization performance of calcium-based desulfurizer

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Journal of Environmental Sciences 2024年第4期138卷 179-188页

作者： juan lǖ Yu Fu Haiyan Yu HuanWang Zhe Wang Haiyan Chen School of Environment and Resource Southwest University of Science and TechnologyMianyang 621010China Guangyuan Emergency Management bureau Guangyuan 628000China

low desulfurization efficiency impedes the wide application of dry desulfurization technology,which is a low-cost and simple process,and one significant solution is the development and manufacture of high-performance *** this study,firstly,a steam jet mill was used to digest quicklime;then,we utilized numerical simulation to study the flow field distribution and analyze the driving factors of quicklime digestion;and lastly,the desulfurization performance of the desulfurizer was evaluated under different relative *** results show that the desulfurizer prepared via the steam jet mill had better apparent activity than traditional ***,the entire jet flow field of the steam jet mill is in a supersonic and highly turbulent flow state,with high crushing intensity and good particle acceleration *** contact with the nascent surface maximizes the formation of slaked *** experiments demonstrated that the operating time with 100%desulfurization efficiency and the“break-through”time for the desulfurizer prepared via the steam jet mill is longer than that of traditional desulfurizers,and has significant advantages,especially at low flue gas relative *** with traditional desulfurizers,the desulfurizer prepared via steam jet mill expands the range of acceptable flue gas temperature,and the failure temperature is 1.625 times that of traditional *** work breaks through the technical bottleneck of low dry desulfurization efficiency,which is an important step in pushing forward the application of dry desulfurization.

关键词： Dry desulfurization Relative humidity Desulfurization efficiency High-efficiency desulfurizer Quicklime digestion

The Extension Degree Conditions for Fractional Factor

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Acta Mathematica Sinica,English Series 2020年第3期36卷 305-317页

作者： Wei GAO Wei Fan WANG juan l.G.GUIRAO School of Information Science and Technology Yunnan Normal UniversityKunming 650500P.R.China Department of Mathematics Zhejiang Normal UniversityJinhua 321004P.R.C hina Departamento de Matematica Aplicada y Estadistica.Universidad Politecnica de Cartagena Hospital de Marina30203-CartagenaRegion de MurciaSpain

In Gao’s previous work, the authors determined several degree conditions of a graph which admits fractional factor in particular settings. It was revealed that these degree conditions are tight if b = f(x) = g(x) = a for all vertices x in G. In this paper, we continue to discuss these degree conditions for admitting fractional factor in the setting that several vertices and edges are removed and there is a difference Δ between g(x) and f(x) for every vertex x in G. These obtained new degree conditions reformulate Gao’s previous conclusions, and show how Δ acts in the results. Furthermore,counterexamples are structured to reveal the sharpness of degree conditions in the setting f(x) =g(x) + Δ.

关键词： Fractional factor degree condition independent set

Oligodendroctyes:the forgotten players of diabetes pathophysiology

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Neural Regeneration Research 2024年第11期19卷 2349-2350页

作者： juan Antonio lópez-Villodres Beatriz García-Díaz Departamento Fisiología Humana Histología HumanaAnatomía Patológica y Educación Física y DeportivaFacultad de MedicinaUniversidad de MálagaMálagaSpain UGC Neurociencia.Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina(IBIMA Plataforma Bionand) MálagaSpain

Oligodendrocytes(Ols),glial cells that provide myelin sheaths to axons in the central nervous system(CNS),have a dual ***,this myelin fatty cover around the axons protects the nerves and is crucial for the saltatory propagation of action *** and not less important,Ols provide trophic support to neurons and ***,Ol metabolism is important for Ol well-being and the proper accomplishment of their functions,and Ol metabolism energetics directly affect the energy metabolism of neighboring neurons.

关键词： metabolism nerves myelin

A Toughness Condition for Fractional(k, m)-deleted Graphs Revisited

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Acta Mathematica Sinica,English Series 2019年第7期35卷 1227-1237页

作者： Wei GAO juan l.G.GUIRAO Yao Jun CHEN Department of Mathematics Nanjing University Nanjing 210093 P. R. China School of Information Science and Technology Yunnan Normal University Kunming 650500 P. R. China Departamento de Matematica Aplicada y Estadistica. Universidad Politecnica de Cartagena Hospital de Marina 30203-Cartagena Region de Murcia Spain

In computer networks, toughness is an important parameter which is used to measure the vulnerability of the network. Zhou et al. obtains a toughness condition for a graph to be fractional(k, m)-deleted and presents an example to show the sharpness of the toughness bound. In this paper, we remark that the previous example does not work and inspired by this fact, we present a new toughness condition for fractional(k, m)-deleted graphs improving the existing one. Finally, we state an open problem.

关键词： Graph fractional factor fractional(k,m)-deleted graph toughness

Methods for discovery and characterization of cellulolytic enzymes from insects

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Insect Science 2010年第3期17卷 184-198页

作者： Jonathan D. Willis Cris Oppert juan l. Jurat-Fuentes Department of Entomology and Plant Pathology University of Tennessee Knoxville Tennessee USA

Cellulosic ethanol has been identified as a crucial biofuel resource due to its sustainability and abundance of cellulose feedstocks. However, current methods to obtain glucose from lignocellulosic biomass are ineffective due to recalcitrance of plant biomass. Insects have evolved endogenous and symbiotic enzymes to efficiently use lignocellulosic material as a source of metabolic glucose. Even though traditional biochemical methods have been used to identify and characterize these enzymes, the advancement of genomic and proteomic research tools are expected to allow new insights into insect digestion of cellulose. This information is highly relevant to the design of improved industrial processes ofbiofuel production and to identify potential new targets for development of insecticides. This review describes the diverse methodologies used to detect, quantify, purify, clone and express cellulolytic enzymes from insects, as well as their advantages and limitations.

关键词： biofuels cellulases cellulase discovery methods cellulase substrate insect digestive fluids lignocellulosic biomass

Survival of potential probiotic isolated from fermented tea leaf and encapsulated in multilayer beads stored in makiang(Cleistocalyx nervosum ***)juice

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Food Bioscience 2022年第6期50卷 389-395页

作者： Paramaporn Kerdsup Passarin Hattayapichat juan l.Silva Sumate Tantratian Department of Food Technology Faculty of ScienceChulalongkorn UniversityBKK10330Thailand Program in Biotechnology Faculty of ScienceChulalongkorn UniversityBKK10330Thailand Department of Biotechnology and Agricultural Product Faculty of Agricultural Product Innovation and TechnologySrinakharinwirot UniversityNakhonnayok26120Thailand Department of Food Science Nutrition and Health PromotionMississippi State UniversityMS39762USA

Cleistocalyx nervosum *** juice or makiang juice has high content of acid and phenolic compounds which are detrimental to probiotic *** screening of potential probiotic with acid production and phenolic tolerant bacteria from fermented tea leaves revealed 5 isolates which were identified using 16s rRNA sequencing procedure and found similarity to the strain of lactobacillus plantarum in GenBank database at 98–100%.The storage of 5 isolates and 6 probiotics in makiang juice for 24 h was indicated that *** MF105 and TISTR 2074 showed the least reduction of 30.10±1.25 and 61.41±2.37%,*** cultures were encapsulated in 2%alginate bead(Al),Al+single-layer of gelatin(ACG),and Al+double-layer of gelatin(ACGD).They were kept in makiang juice at 4°*** physico-chemical characteristics of beads in makiang juice illustrated that the accumulation of phenolic compounds was faster than the pH decreasing and caused initial reduction of bacterial *** ACGD beads absorbed slower and accumulated less amount of phenolic compounds than *** were the most effective in cell protection,the viability of encapsulated MF105 and TISTR2074 were prolonged to more than 7 and 4 days,*** adaptation in combination with encapsulation enhanced the survival of probiotic cell in sub-lethal stress *** had shown that increasing the coating layer provided a chance to improve lethality of probiotic bacteria.

关键词： Anthocyanin Alginate gel Refrigeration temperature Adaptation

SYNTHESIS AND PROPERTIES OF HOMOPOlYMER AND COPOlYMERS OBTAINED FROM 1-OCTADECENE WITH ZIRCONOCENE CATAlYSTS

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Chinese Journal of Polymer Science 2000年第3期18卷 249-254页

作者： Raul Quijada juan l.Guevara Rene Rojas Franco M.Rabagliati Departamento de Ingenieria Quimica Facultad de Ciencias Fisicasy MatematicasUniversidad de ChileCasilla 2777SantiagoChile Departamento Ciencias Quimicas Facultad Quimicay BiologiaUniversidad de Santiago de ChileCasilla 40SantiagoChile

Studies related to the behavior of different metallocene catalysts for the homopolymerization of 1-octadecene andits copolymerization with ethylene will be *** metallocenes:rac-Et(Ind)_(2)ZrCl_(2),rac-Me_(2)Si(Ind)_(2)ZrCl_(2)andPh_(2)C(Flu)(Cp)ZrCl_(2)were chosen for the homopolymerization *** show important differences in catalytic activity athigh temperatures(≥70℃),with rac-Et(Ind)_(2)ZrCl_(2)showing the highest *** lower temperatures(≤30℃)thedifferences are *** the copolymerization of ethylene with 1-octadecene only the catalysts rac-Et(Ind)_(2)ZrCl_(2)andrac-Me_(2)Si(Ind)_(2)ZrCl_(2)were *** results show that their catalytic activity is just like that for the homopolymerizationof 1-octadecene,with higher activity for the metallocene with the Et-bridged catalyst.^(13)C-NMR analysis shows that thecomposition of the copolymerization products depends on the catalytic *** obtained with rac-Me_(2)Si(Ind)_(2)ZrCl_(2)have greater comonomer *** analysis shows that poly-1-octadecene synthesized withthe catalyst rac-Et(Ind)_(2)ZrCl_(2)is very dependent on the polymerization *** homopolymer obtained at 70℃presents two endothermal peaks at 41℃and 53℃,as compared with the one obtained at 30℃which presents one wider peakwith a maximum at 67℃.For the catalyst rac-Me_(2)Si(Ind)_(2)ZrCl_(2)this trend is not *** type of metallocene and thereaction time do not significantly change the intrinsic viscosity,but the polymerization temperature changes it drastically,giving higher values at lower *** measurements on the copolymers show that an increase of comonomerconcentration in the feed reduces the molecular weight of the copolymer,and it was also found that for homopolymer,themolecular weight is independent of the catalytic systems.

关键词： Homopolymerization Copolymerization Metallocene Catalytic activity Poly-l-octadecene

Virus location and lymphocyte Apoptosis in lymph Nodes of Piglets Infected with PCV-2

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Agricultural Sciences in China 2008年第4期7卷 507-512页

作者： SHI lū-juan HAN Hui-li ZHANG Shu-xia College of Veterinary Medicine Nanjing Agricultural University Nanjing 210095 P.R.China

The present study has been performed to understand the location of the virus, type of apoptotic cells, and their relation to lymph nodes of piglets infected with porcine circovirus type Ⅱ （PCV-2）. Nine 32-day-old conventional piglets free of infection with PCV-2 were used, and distributed into three groups： control group （n = 3）, piglets inoculated with PCV-2 alone （PCV-2, n = 3）, and PCV-2 inoculated and KlH immunostimulated group （PCV-2 ＋ KlH, n = 3）. Superficial inguinal lymph nodes from all piglets were collected for histological examination after 32 days postinoculation, and immunohistochemistry for PCV-2 detection. location of apoptotic cells was detected with TdT-mediated dUTP nick end labeling （TUNEl） and cell cycle, and the apoptotic rates were measured by flow cytometry. The characteristic histopathological lesions of the piglets in PCV-2 and PCV-2 ＋ KlH were lymphocyte depletions in the cortex and paracortex of the lymph nodes, epithelioid-like macrophage infiltration, and intracytoplasmic inclusion bodies presented in epithelioid-like macrophages. PCV-2 was mainly found in epithelioid-like macrophages by immunohistochemistry. In the lymph nodes, lymphocytes presented higher apoptotic rates in the cortex by TUNEl, special B-cell areas, and similar apoptotic cells were found in this compartment in the control. The apoptotic rates of the lymph nodes were 0.41, 3.34, and 4.88% in the control, PCV-2, and PCV-2 ＋ KlH groups by flow cytometry, respectively. The apoptotic rates of lymph nodes for PCV-2 and PCV-2 ＋ KlH piglets were significantly higher than those for the control group （P〈0.05 and P〈0.01）. The proliferation index （PI） was 0.17_＋0.01, 0.12_＋0.01 and 0.12_＋0.04 in the control, PCV-2, and PCV-2 ＋ KlH group, the PI of the control group was higher than that of the other groups, but without the statistical difference. PCV-2 can induce lymphocyte depletion in lymph nodes of piglets by blocking cell proliferation and promoting apoptosis. This is one of th

关键词： apoptosis virus located lymph node PCV-2 piglets

Pleistocene history of Iberomys,an endangered endemic rodent from southwestern Europe

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Integrative Zoology 2014年第4期9卷 481-497页

作者： Gloria CUENCA-BESCÓS juan Manuel lÓPEZ-GARCÍA María Angeles GAlINDO-PEllICENA Rosa GARCÍA-PEREA Julio GISBERT juan ROFES Jacint VENTURA Research Group Aragosaurus-IUCA PaleontologyEarth Sciences DepartmentUniversity of ZaragozaZaragozaSpain Research Group of Paleobiology and Prehistory Human Studies DepartmentUniversity of FerraraFerraraItaly Research Institute of Evolution and Human Behavior UCM-ISCIIIMadridSpain GAlEMIA Conservation and Study of Forgotten VertebratesMadridSpain Department of Stratigraphy and Paleontology Faculty of Sciences and TechnologyUniversity of the Basque CountryGipuzkoaGuipúzcoaSpain Department of Animal Biology Plant Biology and EcologyFaculty of BiosciencesUniversity Autonoma de BarcelonaBarcelonaSpain

The extant Cabrera’s vole,Microtus cabrerae,differs in morphology and evolutionary history from the other species of *** arvicoline has unique derived features in the cranium,mandible and ***bly its most conspicuous features are its large size,the high skull in lateral view,the long and distally broad nasals,and the triangle shape of the anteroconid complex,with a marked labio-lingual asymmetry of the occlusal surface of the first lower *** this study,we propose a phylogenetic lineage that includes Cabrera’s vole in what until now has been the Microtus subgenus *** information and several life history traits support the elevation of Iberomys to the rank of *** Iberomys comprises species that have appeared in succession during the Quaternary:in the Early Pleistocene,the extinct *** in the Middle Pleistocene,the extinct *** and in the late Pleistocene,the extant ***,the extant species shows several biological singularities,such as multiple polymorphic copies of the SRY male-specific gene in both males and females,and the lowest basal metabolic rate in relation to weight among arvicoline ***,its habitat requirement is unique among the Iberian ***,the biological and paleontological data that we present in this work support the elevation of its taxonomic rank to that of ge*** study also suggests a modification of nomenclature:Microtus(Iberomys)brecciensis is replaced with *** and the common name of the extant M.(I.)cabrerae changed from‘topillo’to‘iberon’to improve conservation and protection actions.

关键词： Cabrera’s vole conservation Iberoccitanian endemism Iberomys origin