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Cantharellus(Cantharellales,Basidiomycota)revisited in Europe through a multigene phylogeny

Fungal Diversity 2017年第2期83卷 263-292页

作者： Ibai Olariaga gabriel moreno Jose Luis Manjon Isabel Salcedo Valerie Hofstetter Diego Rodrıguez Bart Buyck Department of Life Sciences(Botany) University of Alcala28805 Alcalade HenaresMadridSpain Department of Plant Biology and Ecology(Botany) University of the Basque Country(UPV/EHU)Apdo 64448080 BilbaoSpain Department of Plant Protection Agroscope ChanginsWadenswil Research StationACWRte de Duiller1260 NyonSwitzerland Kherdzmari St.Microdistrict 11.Block 58 Flat 69TemkaTbilisiGeorgia Departement Systematique et Evolution CP 39ISYEBUMR 7205 CNRS MNHN UPMC EPHEMuseum National d’Histoire Naturelle12 Rue Buffon75005 ParisFrance

Resolving species delimitation issues of European Cantharellus is crucial to correctly name chanterelles around the *** names referring to Cantharellus *** been described in Europe,some of which are used in other *** on combined analyses of ITS2,LSU,RPB2 and TEF-1,merely eight species are here recognized in Europe applying the genealogical concordance phylogenetic species recognition criteria,one of which,***,is described as ***logical characters used in species delimitation are mapped and their variability *** colour of the hymenophore in young specimens is found to be a rather constant morphological character of taxonomic *** species of Cantharellus are morphologically distinguished by unique combinations of characters,such as the presence of a pink pileal coating,pileus and hymenophore colour when young,and in some cases,the mean spore length and *** type specimens from Europe are *** on revised species concepts sixteen novel taxonomic synonyms are here proposed for European chanterelles:***(=***,***,***),***(=*** ***,*** ***,***),***(=*** ***,***),***(=*** ***),***(=***),***(=*** ***,*** ***,***),and ***sianus(=***,***,***nesianus ***).The type of Cantharellus,***,is ***,colour illustrations and a key to all European species are provided.

关键词： Cantharelloid clade Cantharellaceae Epitype Edible fungi Genealogical concordance Species delimitation

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Pseudoclitocybaceae fam. nov. (Agaricales, Tricholomatineae), a new arrangement at family, genus and species level

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Fungal Diversity 2018年第3期90卷 109-133页

作者： Pablo Alvarado Pierre-Arthur Moreau Balint Dima Alfredo Vizzini Giovanni Consiglio gabriel moreno Ledo Setti Tapio Kekki Seppo Huhtinen Kare Liimatainen Tuula Niskanen ALVALAB La Rochela 4739012 SantanderSpain Univ de Lille UFR PharmacieEA 4483 IMPECS59000 LilleFrance Department of Plant Anatomy Eotvos Lorand UniversityPazmany Peter Setany 1/c1117 BudapestHungary Department of Biosciences(Plant Biology) Viikki Plant Science CentreUniversity of HelsinkiP.O.Box 6500014 HelsinkiFinland Dipartimento di Scienze della Vita e Biologia dei Sistemi Universita`di TorinoViale P.A.Mattioli 2510125 TurinItaly Institute for Sustainable Plant Protection(IPSP)-CNR Viale P.A.Mattioli 2510125 TurinItaly Via C.Ronzani 6140033 Casalecchio di RenoBOItaly Departamento Ciencias de la Vida(Botany) Universidad de Alcala28805 Alcala´de HenaresMadridSpain Via C.Pavese 1 46029 SuzzaraMNItaly JyvaskylaUniversity Museum University of JyvaskylaP.O.BOX 3540014 JyvaskylaFinland Herbarium University of Turku 20014 TurkuFinland The Jodrell Laboratory Royal Botanic GardensKewSurrey TW93ABUK

A new classification of several clitocyboid taxa is here proposed to accommodate results from multigenic phylogenetic *** analysis of ITS rDNA as well as a combined dataset including 18S and 28S rDNA,tef1 and rpb2 data,support significantly a shared monophyletic origin of the genera Pseudoclitocybe,Musumecia and Pogonoloma,and the species Clitocybe alexandri and *** new family Pseudoclitocybaceae is here proposed to name this clade,characterized by the presence of loop-like clamp connections in most species,absence of cystidia,and parallel hymenophoral trama with broad,cylindrical hyphae with intracellular *** new genera Clitopaxillus and Harmajaea are proposed to accommodate the type species *** and ***,as well as the combination *** addition,two new species are described:*** has a differential distribution of clamp connections in the basidiome,while *** is,by now,an exclusively European taxon with brownish pileus,somewhat decurrent gills,ovoid spores and basidia longer than those of ***,the species concept within Pseudoclitocybe and Pogonoloma is discussed and descriptions of the most representative species are provided.

关键词： Clitocybe Clitopaxillus Harmajaea Musumecia Pogonoloma Pseudoclitocybe

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Role of hypoxia preconditioning in therapeutic potential of mesenchymal stem-cell-derived extracellular vesicles

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World Journal of Stem Cells 2022年第7期14卷 453-472页

作者： Victoria Pulido-Escribano Bárbara Torrecillas-Baena Marta Camacho-Cardenosa gabriel Dorado MaríaÁngeles Gálvez-moreno Antonio Casado-Díaz Unidad de Gestión Clínica de Endocrinología y Nutrición-GC17 Instituto Maimónides de Investigación Biomédica de CórdobaHospital Universitario Reina SofíaCórdoba 14004Spain Dep.Bioquímica y Biología Molecular Campus Rabanales C6-1-E17Campus de Excelencia Internacional Agroalimentario(ceiA3)Universidad de CórdobaCIBERFESCórdoba 14071Spain

The use of mesenchymal stem-cells(MSC)in cell therapy has received considerable attention because of their *** properties include high expansion and differentiation in vitro,low immunogenicity,and modulation of biological processes,such as inflammation,angiogenesis and ***,the regenerative effect of MSC is partly due to their paracrine *** has prompted numerous studies,to investigate the therapeutic potential of their secretome in general,and specifically their extracellular vesicles(EV).The latter contain proteins,lipids,nucleic acids,and other metabolites,which can cause physiological changes when released into recipient ***,contents of EV can be modulated by preconditioning MSC under different culture *** them,exposure to hypoxia stands out;these cells respond by activating hypoxia-inducible factor(HIF)at low O_(2) *** has direct and indirect pleiotropic effects,modulating expression of hundreds of genes involved in processes such as inflammation,migration,proliferation,differentiation,angiogenesis,metabolism,and cell *** of these genes is reflected in the contents of secreted ***,numerous studies show that MSC-derived EV conditioned under hypoxia have a higher regenerative capacity than those obtained under *** this review,we show the implications of hypoxia responses in relation to tissue *** addition,hypoxia preconditioning of MSC is being evaluated as a very attractive strategy for isolation of EV,with a high potential for clinical use in regenerative medicine that can be applied to different pathologies.

关键词： Cell priming Extracellular vesicles Hypoxia Hypoxia-inducible factor Mesenchymal stemcells Regenerative medicine

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Alterations in blink and masseter reflex latencies in older adults with neurocognitive disorder and/or diabetes mellitus

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World Journal of Clinical Cases 2022年第1期10卷 177-188页

作者： Jaime Alberto Bricio-Barrios Eder Ríos-Bracamontes Mónica Ríos-Silva Miguel Huerta Walter Serrano-moreno JoséEnrique Barrios-Navarro Genaro gabriel Ortiz Miguel Huerta-Trujillo JoséGuzmán-Esquivel Xóchitl Trujillo Faculty of Medicine University of ColimaColima 28040ColimaMexico General Hospital Zone#1 Mexican Social Security InstituteVilla de Alvarez 28983ColimaMexico University Biomedical Research Center University of ColimaColima 28045ColimaMexico University Biomedical Research Center CONACYTColima 28045ColimaMexico Department of Philosophical and Methodological Disciplines University Health Sciences CenterUniversity of GuadalajaraGuadalajara 44340JaliscoMexico

BACKGROUND Blink and masseter reflexes provide reliable,quantifiable data on the function of the central nervous system:Delayed latencies have been found in patients with neurocognitive disorder(ND)and type 2 diabetes mellitus(T2DM),but this has not been studied in patients with both *** To investigate if older adults with ND plus T2DM have prolonged latencies of blink and masseter-reflex and if they were associated with disease *** This cross-sectional study included 227 older adults(>60 years)from Colima,*** disorder was identified by a neuropsychological battery test,and T2DM identified by medical history,fasting glucose,and glycosylated *** in the early reflex(R1),ipsilateral late(R2),and contralateral late(R2c)components of the blink reflex were analyzed for all subjects,and 183 subjects were analyzed for latency of the masseter *** In 20.7%of participants,ND was *** 37%,T2DM was *** in R1,R2,and R2c were significantly prolonged for groups with ND plus T2DM,ND,and T2DM,compared with the control group(P<0.0001).The masseter reflex was only prolonged in older adults(regardless of T2DM status)with ND vs controls(P=0.030).In older adults with ND and without T2DM,the more the cognitive impairment progressed,the more prolonged latencies in R2 and R2c presented(P<0.01).CONCLUSION These findings suggest that blink and masseter reflexes could be used to evaluate possible changes in brainstem circuits in older adults with ND and T2DM.

关键词： Blink reflex Masseter reflex Brainstem reflexes Neurocognitive disorder Type 2 diabetes mellitus Older adults

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Fungal diversity notes 1611-1716: taxonomic and phylogenetic contributions on fungal genera and species emphasis in south China

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Fungal Diversity 2023年第5期122卷 161-403页

作者： Indunil C.Senanayake Walter Rossi Marco Leonardi Alex Weir Mark McHugh Kunhiraman C.Rajeshkumar Rajnish K.Verma Samantha C.Karunarathna Saowaluck Tibpromma Nikhil Ashtekar Sreejith K.Ashtamoorthy Sanjay Raveendran Gurmeet Kour Aishwarya Singh Saúl De la Peña-Lastra Antonio Mateos Miroslav Kolařík Vladimír Antonín HanaŠevčíková Fernando Esteve-Raventós Ellen Larsson Fermín Pancorbo gabriel moreno Alberto Altés Yolanda Turégano Tian-Ye Du Li Lu Qi-Rui Li Ji-Chuan Kang Sugantha Gunaseelan Kezhocuyi Kezo Malarvizhi Kaliyaperumal Jizhen Fu Milan C.Samarakoon Yusufjon Gafforov Shakhnoza Teshaboeva Pradeep C.Kunjan Arya Chamaparambath Adam Flakus Javier Etayo Pamela Rodriguez-Flakus Mikhail P.Zhurbenko Nimali Ide Silva Danushka S.Tennakoon KPDeepna Latha Patinjareveettil Manimohan KNAnil Raj Mark S.Calabon Abdollah Ahmadpour Zeinab Heidarian Zahra Alavi Fatemeh Alavi Youbert Ghosta Razmig Azizi Mei Luo Min-Ping Zhao Nuwan D.Kularathnage Li Hua Yun-Hui Yang Chun-Fang Liao Hai-Jun Zhao Anis S.Lestari Subashini C.Jayasiri Feng-Ming Yu Lei Lei Jian-Wei Liu Omid Karimi Song-Ming Tang Ya-Ru Sun Yong Wang Ming Zeng Zin H.Htet Benedetto T.Linaldeddu Artur Alves Alan J.L.Phillips Carlo Bregant Lucio Montecchio AndréDe Kesel Vincent P.Hustad Andrew N.Miller Anna G.Fedosova Viktor Kučera Mubashar Raza Muzammil Hussain Yan-Peng Chen Vinodhini Thiyagaraja Deecksha Gomdola Achala R.Rathnayaka Asha J.Dissanayake Nakarin Suwannarach Sinang Hongsanan Sajeewa S.N.Maharachchikumbura Lakmali S.Dissanayake Nalin N.Wijayawardene Rungtiwa Phookamsak Saisamorn Lumyong E.B.Gareth Jones Neelamanie Yapa Dhanushka N.Wanasinghe Ning Xie Mingkwan Doilom Ishara S.Manawasinghe Jian-Kui(Jack)Liu Qi Zhao Biao Xu Kevin D.Hyde Jiage Song Innovative Institute for Plant Health/Key Laboratory of Green Prevention and Control On Fruits and Vegetables in South China Ministry of Agriculture and Rural AffairsZhongkai University of Agriculture and EngineeringHaizhu DistrictGuangzhou 510225GuangdongChina Center of Excellence in Fungal Research Mae Fah Luang UniversityChiang Rai 57100Thailand Guangdong Provincial Key Laboratory for Plant Epigenetics College of Life Science and OceanographyShenzhen University3688Nanhai AvenueNanshanShenzhen 518055GuangdongChina Sect.Environmental Sciences Department MeSVAUniversity of L’AquilaVia Vetoio67100 CoppitoAQItaly Department of Environmental Biology SUNY-ESF241 Illick Hall1 Forestry DriveSyracuseNY 13210USA National Fungal Culture Collection of India MACS Agharkar Research InstitutePuneMaharashtra 411004India Department of Plant Pathology Punjab Agricultural UniversityLudhianaPunjab 141004India Center for Yunnan Plateau Biological Resources Protection and Utilization College of Biological Resource and Food EngineeringQujing Normal UniversityQujing 655011YunnanChina Department of Forest Ecology Kerala Forest Research InstitutePeechiThrissurKerala 680653India Department of Botany The American CollegeTallakkulamMaduraiTamil Nadu 625002India Department of Zoology Savitribai Phule Pune UniversityGaneshkhind RdGaneshkhindPuneMaharashtra 411007India University of Santiago de Compostela 15782 Santiago de CompostelaSpain Sociedad Micológica Extremeña C/Sagitario 1410001 CáceresSpain Institute of Microbiology of the Czech Academy of Sciences Vídeňská108314220 Prague 4Czech Republic Department of Botany Moravian MuseumZelnýtrh 665937 BrnoCzech Republic Department of Life Sciences(Botany Unit) University of Alcalá28805 Alcaláde HenaresMadridSpain Biological and Enviromental Sciences University of Gothemburgand Gothemburg Global Biodiversity CentreBox 46140530 GöteborgSweden Madrid Mycological Society Real Jardín BotánicoC/Claudio Moyano 128014 MadridSpain State Ke

This article is the 15th contribution in the Fungal Diversity Notes series,wherein 115 taxa from three phyla,nine classes,28 orders,48 families,and 64 genera are *** taxa described and illustrated in the present study include a new family,five new genera,61 new species,five new combinations,one synonym,one new variety and 31 records on new hosts or new geographical *** *** introduced and accommodated in *** new genera introduced in this study are Ageratinicola,Kevinia,Pseudomultiseptospora(Parabambusicolaceae),Marasmiellomycena,and Vizzinia(Porotheleaceae).Newly described species are Abrothallus altoandinus,Ageratinicola kunmingensis,Allocryptovalsa aceris,Allophoma yuccae,Apiospora cannae,***,***,Boeremia wisteriae,Calycina papaeana,Clypeo-coccum lichenostigmoides,Coniochaeta riskali-shoyakubovii,Cryphonectria kunmingensis,Diaporthe angustiapiculata,***,***,Diatrypella guangdongense,Dothiorella franceschinii,Endocalyx phoenicis,Epicoc-cum terminosporum,Fulvifomes karaiensis,***,Ganoderma ghatensis,Hysterobrevium baoshanense,Inocybe avellaneorosea,***,Jahnula oblonga,Kevinia lignicola,Kirschsteiniothelia guangdongensis,Laboulbenia caprina,***,***,***,***,***,***,***,***,Laccaria rubriporus,Lasiodiplodia morindae,Lyophyllum agnijum,Marasmiellomycena pseudoomphaliiformis,Melomastia beihaiensis,Nemania guangdongensis,Nigrograna thailandica,Nigrospora ficuum,Oxydothis chinensis,***,Petriella thailandica,Phaeoacremonium chinensis,Phialocephala chinensis,Phytophthora debattistii,Polyplosphaeria nigrospora,Pronectria loweniae,Seriascoma acutispora,Setoseptoria bambusae,Stictis anomianthi,Tarzetta tibetensis,Tarzetta urceolata,Tetraploa obpyriformis,Trichoglossum beninense,and Tricoderma *** provide an emendation for Urnula ailaoshanensis Agaricus duplocingulatoides *** i

关键词： Agaricomycetes Ascomycota Basidiomycota Dothideomycetes Eurotiomycetes Fungal diversity Geoglossomycetes Geographical distribution Host records Incertae sedis Laboulbeniomycetes Lecanoromycetes Leotiomycetes Novel taxa New combination Oomycota Peronosporea Pezizomycetes Phylogeny Sordariomycetes South Chinese fungi Taxonomy

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Primary colonic type adenocarcinoma of the cecal appendix presented as obstructive acute abdominal syndrome

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The Chinese-German Journal of Clinical Oncology 2006年第6期5卷 458-459页

作者： gabriel J.Arismendi-Morillo Rafael E.Aez-moreno Mary C.Fernández-Abreu Department of Pathology Hospital General del Sur "Dr.Pedro Iturbe"Maracaibo-Venezuela Institute of Biological Investigations-Electron Microscopy LaboratoryFaculty of MedicineUniversity of ZuliaMaracaibo-Venezuela Department of Surgery Hospital General del Sur "Dr.Pedro Iturbe"Maracaibo-Venezuela Department of Internal Medicine Hospital General del Sur "Dr.Pedro Iturbe"Maracaibo-Venezuela

We reported a case with an obstructive acute abdomen,and emergency exploratory laparotomy was ***-pendiceal neoplasm was observed adhered to the ileum,and an ileohemicolectomy was *** the histopathological point of view the neoplasm was an infiltrating colonic type adenocarcinoma of the appendix,with extension to the periapendicular adipose tissue and fixation of an adjacent ileal loop secondary to infiltration of the intestinal *** tumor produced a moderate luminal stenosis of the intestine,this explained the clinical manifestations of the ***-operative evolution was satisfac-tory and there had been no signs of recurrence in the 5 years since the *** upon the comparison of clinical char-acteristics,pathological behavior(in relation to the growth and dissemination),and therapeutic considerations,possibly colonic type adenocarcinoma of the appendix is a neoplasm similar to the carcinomas of ascending colon.

关键词： appendix pdmary colonic type adenocarcinoma appendiceal adenocarcinoma

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Transient Behavior of a System Composed of Conductive Thin Wire Structures Excited by Harmonic and Lightning Type Signals

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Journal of Electromagnetic Analysis and Applications 2014年第11期6卷 342-357页

作者： Eduardo Faleiro gabriel Asensio Daniel García Gregorio Denche Jorge moreno Departamento de Física Aplicada ETSIDI Universidad Politécnica de Madrid Madrid Spain Departamento de Matemática Aplicada ETSIDI Universidad Politécnica de Madrid Madrid Spain Departamento de Ingeniería Eléctrica ETSIDI Universidad Politécnica de Madrid Madrid Spain

The transient response of a system of independent electrodes buried in a semi-infinite conducting medium is studied. Using a simple and versatile numerical scheme written by the authors and based on the Electric Field Integral Equation (EFIE), the effect caused by harmonic signals ranging on frequency from Hz to hundred of MHz, and also by lightning type driving signal striking at a remote point far from the conductors, is extensively studied. The value of the scalar potential appearing on the electrodes as a function of the frequency of the applied signal is one of the variables investigated. Other features such as the input impedance at the injection point of the signal and the Ground Potential Rise (GPR) over the electrode system are also discussed.

关键词： Transferred Potentials Thin Wire Structures Lightning Pulses Electric Field Integral Equation Method of Moments

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Diabetic gastroenteropathy:An underdiagnosed complication

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World Journal of Diabetes 2021年第6期12卷 794-809页

作者： Marcio JoséConcepción Zavaleta Jhean gabriel Gonzáles Yovera Diego Martín moreno Marreros Luciana del Pilar Rafael Robles Kely Roxana Palomino Taype Karen Nohelly Soto Gálvez Luis Fernando Arriola Torres Julia Cristina Coronado Arroyo Luis Alberto Concepción Urteaga Division of Endocrinology Hospital Nacional Guillermo Almenara IrigoyenLima 12590Peru Division of Gastroenterology Hospital Nacional Guillermo Almenara IrigoyenLima 12590Peru Division of Medicine Universidad Nacional de TrujilloTrujillo 13011Peru Division of Endocrinology Hospital Nacional Dos de MayoLima 150101Peru Division of Endocrinology Instituto de Neurología y Endocrinología AvanzadaAndahuaylas 03700Peru Clinical Management Unit Hospital Nacional Guillermo Almenara IrigoyenLima 12590Peru Division of Neurology Instituto de Neurología y Endocrinología AvanzadaAndahuaylas 03700Peru Division of Obstetrics and Gynaecology Clínica VesalioLima 15036Peru Division of Neumology Hospital Regional Docente de TrujilloTrujillo 13011Peru

This article is an extensive review that provides an update on the pathophysiology,symptoms,diagnosis,and treatment of diabetic *** is no reported prevalence,but it has been described that patients with type 1 diabetes have a cumulative incidence at 10 years of 5.2%,and type 2 patients,1%.Also,in the group of type 1 diabetes,it has been observed that women are more likely to present this condition(5.8%vs 3.5%).Many factors are associate with its development(e.g.,hyperglycemia,vagal dysfunction,loss of expression of neural nitric oxide synthase in the myenteric plexus,alterations in the Cajal interstitial cell network,and oxidative stress).Gastrointestinal discomfort could be perceived 70% higher in diabetic patients,describing that 25%of diabetic patients experience gastrointestinal *** enteropathy could affect any portion of the gastrointestinal tract,but esophageal alterations were described in more than 60% of diabetic patients,also 60% of them present constipation,and 20%,*** emptying scintigraphy is useful to evaluate gastroparesis,therefore,gastric retention of more than 60%at 2 h has a sensitivity of 100% and specificity of 20% for diagnosis;however,other studies such as breath tests,with a sensitivity of 89% and a specificity of 80%,or the endoscopic capsule contribute to the *** is no cure;however,management must be multidisciplinary,focused on slowing the progression of diabetic gastroenteropathy,reducing symptoms,and restoring function;that includes nutritional recommendation,maintain glucose levels kept below 180 mg/dL,use of prokinetics,anti-emetics;nowadays,it has been special interest in surgical treatment,such as pyloroplasty,also gastric electrical stimulation appears to be another alternative.

关键词： Gastroenteropathy Gastroparesis Diabetes mellitus Complication Gastrointestinal disease Treatment

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Thirty years of scientific research on second-generation antipsychotic drugs in Japan: A bibliometric analysis

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Open Journal of Psychiatry 2013年第1期3卷 18-25页

作者： Francisco Lopez-Munoz Naotaka Shinfuku Winston WShen Raquel moreno Juan DMolina gabriel Rubio Lorena Huelves Concha Noriega Miguel APerez-Nieto Cecilio Alamo Faculty of Health Sciences Camilo JoseCela UniversityMadridSpain Department of Pharmacology University of AlcalaMadridSpain School of Human Sciences Seinan Gakuin UniversityFukuokaJapan Department of Psychiatry Taipei Medical UniversityWan Fang Medical CenterTaipeiTaiwan Acute Inpatients Unit Dr.R.Lafora Psychiatric HospitalMadridSpain Department of Psychiatry “Doce de Octubre”University HospitalComplutense UniversityMadridSpain

Aims:Research on second-generation antipsychotic drugs (SGAs) has experienced great development in last *** did a bibliometric study on the scientific publications on SGAs in ***: With theEMBASEandMEDLINEdatabases, we chose papers published from Japan with SGA descriptors. Price’s law and Bradford’s law has been used as bibliometric indicators for quantitating production and dispersion, respectively, of published papers on SGAs. We also calculated the participation index of different countries, and correlated those bibliometric data with some social and health data from Japan (such as totalper capitaexpenditure on health and gross domestic expenditure on research and development). Results: A sum of 669 original documents were published from Japan from 1982 to 2011. Those results fulfilled Price’s law, with scientific production on SGAs showing exponential growth (correlation coefficientr= 0.9261, as against anr= 0.8709 after linear adjustment). The most studied SGAs in Japan wererisperidone (n= 192), aripiprazole (n= 109), and olanzapine (n= 106). Division of documents into Bradford zones yielded a nucleus occupied exclusively by theProgress in Neuro-Psychopharmacology and Biological Psychiatry(49 articles). Those publications were in 157 different journals. Seven of the first 10 frequently used journals had an impact factor of being greater than 3. Conclusions: The SGA publications in Japan have been through exponential growth over the studied period, without evidence of reaching a saturation point.

关键词： Second-Generation Antipsychotics Atypical Antipsychotics Bibliometry Schizophrenia Bipolar Disorder Japan

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Investigation of Chemical Bath Deposition of ZnO Nanocrystals Thin Films Using Different ZnNO3 Concentration

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材料科学与工程（中英文A版） 2012年第5期2卷 442-453页

作者： Miguel Hemandez Hernandez Martin Lazcano Hernendez Juan Hernandez Tecorralcol gabriel Juarez Diaz Melissa Chavez Portillo Salvador Rosas Castilla L. Chaltel Lima Oscar Portillo moreno Facultad de Ciencias Quimicas Benemerita Universidad Autonoma de Puebla Moxico Puebla Mexico CIDS-ICUAP Benemerita Universidad A utonoma de Puebla Moxico

In this work, thin films growth at different ZnNO3 concentrations: 0.02 M, 0.03 M and 0.04 M by chemical bath deposition (CBD) as-prepared on glass substrates at 80 °C ± 2 °C. Patterns Diffraction x-ray (DRX) shown peaks 2θ = (31.72, 32.769, 34.36, 36.10, 47.44, 56.52, 62.78, 67.84 and 69.02), at concentration 0.02 M show formation from hydrozincite [Zn5(CO3)2(OH)6]. The optical band gap shifts from 3.8 eV to 3.6 eV. Photoluminescence (PL) spectra show intensity variation of the green emission (GE) may be resulted from variation of the intrinsic defect in ZnO films, such zinc vacancy (VZn), oxygen vacancy (VO), and interstitial zinc (Zni), interstitial oxygen (Oi). The presence of defects in our samples is responsible for the observed broad visible PL bands; this indicates reductions of oxygen vacancies and increase of oxygen interstitials. It could be believed that the presence of defects in samples is responsible for the observed broad visible PL band. The concentration increased the visible defect luminescence, which might be due to improvement to sample stoichiometric. The presence of both green emission (GE) and yellow emission (YE) can be seen through the deconvolution of the defect increasing the concentration, the position of the GE shifted from 1.96-2.45 eV and the increase of its intensity. The shifts of these two visible PL bands might be due to changes in local environments of the defects centers in samples due to increased concentration. Therefore, the GE relate to donor levels dominated due to increase of oxygen vacancies. ZnO is an n-type semiconductor and it means that most defects are Zn interstitials and oxygen vacancies. Raman spectra showed increase of the 437 cm-1 (E2 mode) peak intensity due concentration 0.4 M.

关键词： ZnO薄膜 O3浓度化学浴沉积纳米晶薄膜慢性粒细胞白血病缺陷中心绿色发光强度变化

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