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Enhancement of the CO_(2)adsorption and hydrogenation to CH_(4)capacity of Ru–Na–Ca/γ–Al_(2)O_(3)dual function material by controlling the Ru calcination atmosphere

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Journal of Environmental Sciences 2024年第6期140卷 292-305页

作者： Alejandro Bermejo-lópez Beñat Pereda-Ayo Jon A.Onrubia-Calvo JoséA.González-Marcos Juan R.González-Velasco Department of Chemical Engineering Faculty of Science and TechnologyUniversidad del País Vasco UPV/EHUBarrio Sarrienas/n48940 LeioaBizkaiaSpain

Integrated CO_(2)capture and utilization(ICCU)technology requires dual functional materials(DFMs)to carry out the process in a single reaction *** influence of the calcination atmosphere on efficiency of 4%Ru-8%Na_(2)CO_(3)-8%CaO/γ-Al_(2)O_(3)DFM is *** adsorbent precursors are first co-impregnated onto alumina and calcined in ***,Ru precursor is impregnated and four aliquotes are subjected to different calcination protocols:static air in muffle or under different mixtures(10%H_(2)/N_(2),50%H_(2)/N_(2)and N_(2))*** are characterized by XRD,N_(2)adsorption-desorption,H_(2)chemisorption,TEM,XPS,H_(2)-TPD,H_(2)-TPR,CO_(2)-TPD and *** catalytic behavior is evaluated,in cycles of CO_(2)adsorption and hydrogenation to CH_(4),and temporal evolution of reactants and products concentrations is *** calcination atmosphere influences the physicochemical properties and,ultimately,activity of *** data and catalytic performance discover the acccomodation of Ru nanoparticles disposition and basic sites is mostly influencing the catalytic *** calcined under N_(2)flow(RuNaCa-N_(2))shows the highest CH_(4)production(449μmol/g at 370℃),because a well-controlled decomposition of precursors which favors the better accomodation of adsorbent and Ru phases,maximizing the specific surface area,the Ru-basic sites interface and the participation of different basic sites in the CO_(2)methanation ***,the calcination in a N_(2)flow is revealed as the optimal calcination protocol to achieve highly efficient DFM for integrated CO_(2)adsorption and hydrogenation applications.

关键词： CO_(2)methanation Integrated CO_(2)capture and utilization(ICCU) Dual functional material(DFM) Ru calcination atmosphere

Accelerated intermetallic phase amorphization in a Mg-based high-entropy alloy powder

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Journal of Magnesium and Alloys 2024年第5期12卷 1792-1798页

作者： Prince Sharma Purvam Mehulkumar Gandhi Kerri-lee Chintersingh Mirko Schoenitz Edward l.Dreizin Sz-Chian liou Ganesh Balasubramanian Institute for Functional Materials&Devices Lehigh UniversityBethlehemPA 18015USA Center of Materials for Advanced Energetics New Jersey Institute of TechnologyNewarkNJ 07102USA

We describe a novel mechanism for the synthesis of a stable high-entropy alloy powder from an otherwise immiscible Mg-Ti rich metallic mixture by employing high-energy mechanical *** presented methodology expedites the synthesis of amorphous alloy powder by strategically injecting entropic disorder through the inclusion of multi-principal elements in the alloy *** from first principles and materials theory corroborate the results from microscopic characterizations that reveal a transition of the amorphous phase from a precursor intermetallic *** transformation,characterized by the emergence of antisite disorder,lattice expansion,and the presence of nanograin boundaries,signifies a departure from the precursor intermetallic ***,this phase transformation is accelerated by the presence of multiple principal elements that induce severe lattice distortion and a higher configurational *** atomic size mismatch of the dissimilar elements present in the alloy produces a stable amorphous phase that resists reverting to an ordered lattice even on annealing.

关键词： High-entropy alloy High-energy milling Antisite disorder Amorphous Intermetallic

SlC11A1 polymorphisms in inflammatory bowel disease and Mycobacterium avium subspecies paratuberculosis status

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World Journal of Gastroenterology 2010年第45期16卷 5727-5731页

作者： lucy C Stewart Andrew S Day John Pearson Murray l Barclay Richard B Gearry Rebecca l Roberts Robert W bentley Department of paediatrics University of OtagoChristchurch 8140New Zealand Department of paediatrics Christchurch HospitalChristchurch 8140New Zealand Department of pathology University of OtagoChristchurch 8140New Zealand Department of Medicine University of OtagoChristchurch 8140New Zealand Department of Gastroenterology Christchurch HospitalChristchurch 8140New Zealand Department of Biochemistry University of OtagoDunedin 9054New Zealand

AIM: To test for association of SlC11A1 with inflammatory bowel disease (IBD) and Mycobacterium avium subspecies paratuberculosis (MAP) status in a Caucasian cohort. METHODS: Five hundred and seven Crohn's disease (CD) patients, 474 ulcerative colitis (UC) patients, and 569 healthy controls were genotyped for SlC11A1 1730G>A and SlC11A1 469+14G>C using pre-designed TaqMan  SNP assays. χ 2 tests were applied to test for association of single nucleotide polymorphisms (SNPs) with disease, and the presence of MAP ***:SlC11A1 1730G>A and SlC11A 1469+14G>C were not associated with CD, UC, or IBD. The SlC11A1 1730A minor allele was over-represented in patients who did not require immunomodulator therapy (P = 0.002, OR: 0.29, 95% CI: 0.13-0.66). The frequency of the SlC11A1 469+14C allele was higher in the subset of study participants who tested positive for MAP DNA (P = 0.02, OR: 1.56, 95% CI: 1.06-2.29). No association of SlC11A1 1730G>A with MAP was ***: Although SlC11A1 was not associated with IBD, association with MAP suggests that SlC11A1 is important in determining susceptibility to bacteria implicated in the etiology of CD.

关键词： NRAMP1 Crohn’s disease Ulcerative colitis IS900 polymerase chain reaction

Generating oligodendroglia from adult mesenchymal cells for transplantation:cell reprogramming or direct lineage conversion?

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Neural Regeneration Research 2023年第7期18卷 1493-1494页

作者： Jorge pascual-Guerra JoséA.Rodríguez-Navarro Carlos l.paíno Service of Neurobiology-Research Ramón y Cajal University Hospital-IRYCISMadridSpain Department of Cellular Biology Complutense UniversityMadridSpain

Cell replacement therapy has long been proposed as a treatment for the damaged nervous *** of the most challenging aspects of such a strategy,however,is finding sources of donor cells for *** neural cells are rarely an option as every cell in the nervous system has a defined function that would be lost if that cell was to be *** possibility would be sourcing precursor or differentiated cells from fetal tissues;however,aside from ethical issues,heterologous cells are at risk of immunological rejection in the long *** improvements over the past 15 years have led to the possibility that autologous non-neural cells could be used for cell transplantation through their conversion into neural derivatives.

关键词： neural programming removed

NOD2 and ATG16l1 polymorphisms affect monocyte responses in Crohn's disease

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World Journal of Gastroenterology 2011年第23期17卷 2829-2837页

作者： Dylan M Glubb Richard B Gearry Murray l Barclay Rebecca l Roberts John Pearson Jacqui I Keenan Judy McKenzie Robert W bentley Department of Medicine University of ChicagoIL 60637-1470United States Department of Medicine University of OtagoChristchurch8140New Zealand Department of Gastroenterology Christchurch HospitalChristchurch8140New Zealand Department of Biochemistry University of OtagoDunedin9054New Zealand Department of pathology University of OtagoChristchurch8140New Zealand Department of Surgery University of OtagoChristchurch8140New Zealand Department of Haematology University of OtagoChristchurch8140New Zealand Department of paediatrics University of OtagoChristchurch8140New Zealand

AIM： TO assess whether polymorphisms in NOD2 and ATG16l1 affect cytokine responses and mycobacterium avium subspecies paratuberculosis （MAP） survival in monocytes from Crohn＇s disease （CD） patients METHODS： Monocytes were isolated from peripheral blood of CD patients of known genotype for common single nucleotide polymorphisms of NOD2 and ATG16l1, Monocytes were challenged with MAP and bacterial per- sistence assessed at subsequent time-points. Cytokine responses were assayed using a Milliplex multi-analyte profiling assay for 13 cytokines. RESUlTS： Monooltes heterozygous for a NOD2 polymorphism （R702W, P268S, or 1007fs） were more permissive for growth of MAP （P = 0.045） than those without. There was no effect of NOD2 genotype on subsequent cytokine expression. The T300A polymorphism of ATG16l1 did not affect growth of MAP in our model （P = 0.175）, but did increase expression of cytokines interleukin （Il）-10 （P = 0.047） and Il-6 （P = 0.019）. CONClUSION： CD-associated polymorphisms affected the eliminaUon of MAP from ex v/vo monooltes （NOD2）, or expression of certain oltokines （ATG16lI）, implying independent but contributory roles in the pathogenesis of CD.

关键词： Inflammatory bowel disease Mycobacteriumavium subspecies paratuberculosis Cytokine CARD15 Autophagy

Effects of DIMBOA on impulse discharges of maxillary lateral sensillum styloconicum of armyworm larvae

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Chinese Science Bulletin 1997年第1期42卷 72-76页

作者： Yang, DM luo, l Yan, FM Cheng, HW Zhou, pa BEIJING UNIV COLL LIFE SCIBEIJING 100871PEOPLES R CHINA

THE DIMBOA (2, 4-dihydroxy-7-methoxy-1, 4-benzoxazin-3-one), a secondary product present in corn plants, plays an important role in protecting the plant against the pest attack. DIMBOA is rich in seedlings of cereal crops, especially in maize. Many investigators demonstrated a linear relationship between the DIMBOA content in plant and the resistance of the plant to pest. Feng et al. (1992) summarized that the toxicity of DIMBOA is associated

关键词： armyworm larvae gustatory chemoreceptor lateral sensillum styloconicum DIMBOA.

Nuclear phylogenomics of Asteraceae with increased sampling provides new insights into convergent morphological and molecular evolution

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Plant Communications 2024年第6期5卷 117-138页

作者： Guojin Zhang Junbo Yang Caifei Zhang Bohan Jiao Josél.panero Jie Cai Zhi-Rong Zhang lian-Ming Gao Tiangang Gao Hong Ma College of life Sciences Hunan Normal UniversityChangshaHunan 410081China Department of Biology the Huck Institute of the Life Sciencesthe Pennsylvania State UniversityState CollegePA 16801USA State Key laboratory of Plant Diversity and Specialty Crops Institute of BotanyChinese Academy of SciencesBeijing 100093China Germplasm Bank of Wild Species Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China Wuhan Botanical Garden and Sino-Africa Joint Research Center Chinese Academy of SciencesWuhan 430074China Department of Integrative Biology University of TexasAustinTX 78712USA CAS Key laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunmingYunnan 650201China lijiang National Forest Biodiversity National Observation and Research Station Kunming Institute of BotanyChinese Academy of SciencesLijiangYunnan 674100China

Convergent morphological evolution is widespread in flowering plants,and understanding this phenomenon relies on well-resolved *** phylogenetic reconstruction using transcriptome datasets has been successful in various angiosperm groups,but it is limited to taxa with available fresh ***,which are one of the two largest angiosperm families and are important for both ecosystems and human livelihood,show multiple examples of convergent *** Asteraceae phylogenies have resolved relationships among most subfamilies and many tribes,but many phylogenetic and evolutionary questions regarding subtribes and genera remain,owing to limited ***,we increased the sampling for Asteraceae phylogenetic reconstruction using transcriptomes and genome-skimming datasets and produced nuclear phylogenetic trees with 706 species representing two-thirds of recognized *** character reconstruction supports multiple convergent evolutionary events in Asteraceae,with gains and losses of bilateral floral symmetry correlated with diversification of some subfamilies and smaller groups,*** of the calyx-related pappus may have been especially important for the success of some subtribes and *** evolutionary analyses support the likely contribution of duplications of MADS-box and TCP floral regulatory genes to innovations in floral morphology,including capitulum inflorescences and bilaterally symmetric flowers,potentially promoting the diversification of *** divergences and reductions in CYC2 gene expression are related to the gain and loss of zygomorphic *** phylogenomic work with greater taxon sampling through inclusion of genome-skimming datasets reveals the feasibility of expanded evolutionary analyses using DNA samples for understanding convergent evolution.

关键词： sunflower family floral symmetry florets capitulescence molecular clock ancestral character pappus subtribe MADS-box TCP CYC2 gene family gene expression

Hepatitis A vaccine associated with autoimmune hepatitis

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World Journal of Gastroenterology 2007年第15期13卷 2238-2239页

作者： pa Berry G Smith-laing Medway Maritime Hospital Windmill Road GillinghamKentUnited Kingdom

To describe a case of probable relapsing autoimmune hepatitis associated with vaccination against hepatitis A virus （HAV）. A case report and review of literature were written concerning autoimmune hepatitis in association with hepatitis A and other hepatotropic viruses. Soon a^er the administration of formalin-inactivated hepatitis A vaccine, a man who had recently recovered from an uncharacterized but self-limiting hepatitic illness, experienced a severe deterioration （AST 1687 U/l, INR 1.4）. Anti-nuclear antibodies were detectable, and liver biopsy was compatible with autoimmune hepatitis. The observation supports the role of HAV as a trigger of autoimmune hepatitis. Studies in helper T-cell activity and antibody expression against hepatic proteins in the context of hepatitis A infection are summarized, and the concept of molecular mimicry with regard to other forms of viral hepatitis and autoimmunity is briefly explored.

关键词： Hepatitis A virus Vaccine Autoimmune hepatitis Helper T-cell Molecular mimicry

Antioxidant efficiency of lycopene on oxidative stress-induced damage in bovine spermatozoa

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Journal of Animal Science and Biotechnology 2017年第1期8卷 67-79页

作者： Eva Tvrdá Anton Kovácik Eva Tusimová Dusan pa.l Alica Mackovich Jakhongir Alimov Norbert lukác Department of Animal Physiology Faculty of Biotechnology and Food Sciences Slovak University of Agriculture in Nitra Tr. A. Hlinku 2 Nitra 94976 Slovakia AgroBioTech Research Centre Slovak University of Agriculture in Nitra Tr. A. Hlinku 2 Nitra 94976 Slovakia Department of Botany and Genetics Faculty of Natural Sciences Constantine the Philosopher University in Nitra Nabbrezie mladeze 91 Nitra 94974 Slovakia Department of General Biology Faculty of Natural Sciences Gulistan State University 4th Microrayon Guliston 120100 Syrdarya Uzbekistan.

Background： lycopene（lYC） is a natural carotenoid with powerful reactive oxygen species（ROS） scavenging activities. The aim of this study was to investigate if lycopene has the ability to reverse ROS-mediated alterations to the motility, viability and intracellular antioxidant profile of bovine spermatozoa subjected to ferrous ascorbate（Fe AA）. Spermatozoa were washed out of fresh bovine semen, suspended in 2.9 % sodium citrate and subjected to lYC treatment（0.25, 0.5, 1 or 2 mmol/l） in the presence or absence of Fe AA（150 μmol/l Fe SO4 and 750 μmol/l ascorbic acid） during a 6 h in vitro culture. Spermatozoa motion characteristics were assessed using the Sperm Vision？computer-aided sperm analysis（CASA） system. Cell viability was examined with the metabolic activity（MTT） assay,ROS generation was quantified via luminometry and the nitroblue-tetrazolium（NBT） test was applied to quantify the intracellular superoxide formation. Cell lysates were prepared at the end of the in vitro culture to investigate the intracellular activity of superoxide dismutase（SOD）, catalase（CAT）, glutathione peroxidase（GPx） as well as the concentrations of glutathione（GSH） and malondialdehyde（MDA）.Results： FeA A treatment led to a reduced spermatozoa motility（P 〈 0.001）, viability（P 〈 0.001） and a decline of the antioxidant capacity of spermatozoa（P 〈 0.001） but increased the ROS generation（P 〈 0.001）, superoxide production（P 〈 0.001） and lipid peroxidation（P 〈 0.001）. lYC administration resulted in a preservation of the spermatozoa motion parameters（P 〈 0.001）, mitochondrial activity（P 〈 0.001） and antioxidant characteristics（P 〈 0.001 with respect to SOD;P 〈 0.01 in relation to CAT; P 〈 0.05 as for GPx and GSH） with a concentration range of 1 and 2 mmol/l lYC revealed to be the most ***： Our results suggest that lYC exhibits significant ROS-scavenging and antioxidant properties which may prevent spermatozoa alterations caused by oxidative stress, and preserve the functional

关键词： Antioxidants Bulls Ferrous ascorbate lycopene Oxidative stress Spermatozoa