Endoscopic ultrasound-guided biliary drainage(EUS-BD)directs bile flow into the digestive tract and has been mostly used in patients with malignant biliary obstruction(MBO)where endoscopic retrograde cholangiopancreat...Endoscopic ultrasound-guided biliary drainage(EUS-BD)directs bile flow into the digestive tract and has been mostly used in patients with malignant biliary obstruction(MBO)where endoscopic retrograde cholangiopancreatography-guided biliary drainage was unsuccessful or was not feasible.Lumen apposing metal stents(LAMS)are deployed during EUS-BD,with the newer electrocautery-enhanced LAMS reducing procedure time and complication rates due to the inbuilt cautery at the catheter tip.EUS-BD with electrocautery-enhanced LAMS has high technical and clinical success rates for palliation of MBO,with bleeding,cholangitis,and stent occlusion being the most common adverse events.Recent studies have even suggested comparable efficacy between EUS-BD and endosc-opic retrograde cholangiopancreatography as the primary approach for distal MBO.In this editorial,we commented on the article by Peng et al published in the recent issue of the World Journal of Gastrointestinal Surgery in 2024.展开更多
Highly specific interactions between biomolecules,such as antigen-antibody,protein-ligand,or nucleic acid base pair complementary are on the basis of the organization of complex organisms.The same principles may be te...Highly specific interactions between biomolecules,such as antigen-antibody,protein-ligand,or nucleic acid base pair complementary are on the basis of the organization of complex organisms.The same principles may be tentatively used in molecular medicine for diagnosis and therapeutics.A molecule can be designed to selectively bind a protease and thereby inhibit the production of a peptide that forms toxic aggregates in the brain or an antibody may be produced to bind specifically to that peptide for detection or clearance purposes.Unfortunately,interference in biological systems is not that simple.For a start there is the inhibition of the physiological role of the protease;moreover,several cleavage fragments may be produced,which may continue to diverge due to putative post-translational modification and self-assembly processes,hiding the toxic target in a“soup”of peptide species varying in size,structure and chemical composition.A perspective of the current status and challenges in targeting peptide species for diagnosis and treatment in the context of Alzheimer’s disease is given.展开更多
In the context of education internationalization,the internationalization of higher education has become a major trend in the field of education in most countries,with international student education as the core.This ...In the context of education internationalization,the internationalization of higher education has become a major trend in the field of education in most countries,with international student education as the core.This phenomenon promotes cultural exchanges and integration among countries as well as higher education reform,which is of great significance in enhancing the international influence of higher education in each country.However,there are also some challenges faced by higher education students when studying abroad.The article digs into the origin and history of studying abroad,analyzes the current situation and reasons for higher education students in China to study abroad,discusses the opportunities and challenges faced by higher education students in China when studying abroad,and analyzes the trend of studying abroad in China.展开更多
Following a large-scale phylogenetic study of the lichenized genus Cora(Basidiomycota:Agaricales:Hygrophoraceae),we formally describe 70 new species,honouring the seventieth birthday of David Leslie Hawksworth,one of ...Following a large-scale phylogenetic study of the lichenized genus Cora(Basidiomycota:Agaricales:Hygrophoraceae),we formally describe 70 new species,honouring the seventieth birthday of David Leslie Hawksworth,one of the preeminent figures in mycology and lichenology in the past 50 years.Based on an updated phylogeny using the ITS fungal barcoding locus,we now recognize 189 taxa in a genus that until recently was considered to represent a single species;including this contribution,92 of these are formally recognized,including five taxa based on historical names or collections that have not been sequenced.Species of Cora can be recognized by a combination of morphological(size,colour,lobe configuration,surface hairs,hymenophore size and shape),anatomical(thallus thickness,cortex structure,photobiont type,hyphal papillae),and ecogeographical features(substrate,habitat,distribution),and a keytable allowing the identification of all accepted taxa is provided.The new species are:Cora accipiter Moncada,Madrin˜a´n&Lücking spec.nov.,C.applanata Moncada,Soto-Medina&Lücking spec.nov.,C.arachnodavidea Moncada,Dal Forno&Lücking spec.nov.,C.arborescens Dal Forno,Chaves&Lücking spec.nov.,C.arcabucana Moncada,C.Rodrı´guez&Lücking spec.nov.,C.aturucoa Lücking,Moncada&C.Vargas spec.nov.,C.auriculeslia Moncada,Ya´nez-Ayabaca&Lücking spec.nov.,C.barbifera Moncada,Patin˜o&Lücking spec.nov.,C.boleslia Lücking,E.Morales&Dal Forno spec.nov.,C.caliginosa Holgado,Rivas Plata&Perlmutter spec.nov.,C.campestris Dal Forno,Eliasaro&Spielmann spec.nov.,C.canari Nugra,Dal Forno&Lücking spec.nov.,C.caraana Lücking,Martins&Lucheta spec.nov.,C.casasolana Moncada,R.-E.Pe´rez&Lücking spec.nov.,C.caucensis Moncada,M.Gut.&Lücking spec.nov.,C.celestinoa Moncada,CabreraAmaya&Lücking spec.nov.,C.comaltepeca Moncada,R.-E.Pe´rez&Herrera-Camp.spec.nov.,C.corani Lücking,E.Morales&Dal Forno spec.nov.,C.corelleslia Moncada,A.Sua´rez-Corredor&Lücking spec.nov.,C.crispoleslia Moncada,J.Molina&Lücking spec.nov.,C.cuzcoensis Holgado,Rivas Plata&Perlmutter spec.nov.,C.dalehana Moncada,Madrin˜a´n&Lücking spec.nov.,C.davibogotana Lücking,Moncada&Coca spec.nov.,C.davicrinita Moncada,Madrin˜a´n&Lücking spec.nov.,C.davidia Moncada,L.Vargas&Lücking spec.nov.,C.dewisanti Moncada,A.Sua´rez-Corredor&Lücking spec.nov.,C.dulcis Moncada,R.-E.Pe´rez&Lücking spec.nov.,C.elephas Lücking,Moncada&L.Vargas spec.nov.,C.fuscodavidiana Lücking,Moncada&L.Vargas spec.nov.,C.garagoa Simijaca,Moncada&Lücking spec.nov.,C.gigantea Lücking,Moncada&Coca spec.nov.,C.gomeziana Dal Forno,Chaves&Lücking spec.nov.,C.guajalitensis Lücking,Robayo&Dal Forno spec.nov.,C.hafecesweorthensis Moncada,Lücking&R.Pela´ez spec.nov.,C.haledana Dal Forno,Chaves&Lücking spec.nov.,C.hawksworthiana Dal Forno,P.Nelson&Lücking spec.nov.,C.hochesuordensis Lücking,E.Morales&Dal Forno spec.nov.,C.hymenocarpa Lücking,Chaves&Lawrey spec.nov.,C.imi Lücking,Chaves&Lawrey spec.nov.,C.itabaiana Dal Forno,Aptroot&M.Ca´ceres spec.nov.,C.leslactuca nov.,C.maxima Wilk,Dal Forno&Lücking spec.nov.,C.minutula Lücking,Moncada&Ya´nez-Ayabaca spec.nov.,C.palaeotropica Weerakoon,Aptroot&Lücking spec.nov.,C.palustris Dal Forno,Chaves&Lücking spec.nov.,C.parabovei Dal Forno,Kukwa&Lücking spec.nov.,C.paraciferrii Lücking,Moncada&J.E.Hern.spec.nov.,C.paraminor Dal Forno,Chaves&Lücking spec.nov.,C.pastorum Moncada,Patin˜o&Lücking spec.nov.,C.pichinchensis Paredes,Jonitz&Dal Forno spec.nov.,C.pikynasa J.-M.Torres,Moncada&Lücking spec.nov.,C.pseudobovei Wilk,Dal Forno&Lücking spec.nov.,C.pseudocorani Lücking,E.Morales&Dal Forno spec.nov.,C.putumayensis L.J.Arias,Moncada&Lücking spec.nov.,C.quillacinga Moncada,F.Ortega&Lücking spec.nov.,C.rothesiorum Moncada,Madrin˜a´n&Lücking spec.nov.,C.rubrosanguinea Nugra,Moncada&Lücking spec.nov.,C.santacruzensis Dal Forno,Bungartz&Ya´nezAyabaca,spec.nov.,C.schizophylloides Moncada,C.Rodrı´guez&Lücking spec.nov.,C.smaragdina Lücking,Rivas Plata&Chaves spec.nov.,C.soredavidia Dal Forno,Marcelli&Lücking spec.nov.,C.subdavicrinita Moncada,J.Molina&Lücking spec.nov.,C.suturifera Nugra,Besal&Lücking spec.nov.,C.terrestris Dal Forno,Chaves&Lücking spec.nov.,C.terricoleslia Wilk,Dal Forno&Lücking spec.nov.,C.udebeceana Moncada,R.Pela´ez&Lücking,Moncada&R.Pela´ez spec.Lücking spec.nov.,C.urceolata Moncada,Coca&Lücking spec.nov.,C.verjonensis Lücking,Moncada&Dal Forno spec.nov.,C.viliewoa Lücking,Chaves&Soto-Medina spec.nov.,and C.yukiboa Mercado-Dı´az,Moncada&Lücking spec.nov.Furthermore,the taxonomic status of the recently described or recognized species C.arachnoidea,C.aspera,C.ciferrii,and C.reticulifera,is revised.展开更多
Submarine groundwater discharge(SGD)plays a major role as a conveyor of metals to coastal waters.However,the seasonal change of metal fluxes derived through SGD is unclear.Here,we evaluated the behaviours and fluxes o...Submarine groundwater discharge(SGD)plays a major role as a conveyor of metals to coastal waters.However,the seasonal change of metal fluxes derived through SGD is unclear.Here,we evaluated the behaviours and fluxes of trace metals(Mn,Fe,Ba,Pb,U,Cr,Zn,Cu)in an estuary under different seasonal conditions.The behaviours of trace metals revealed that SGD was the source of Mn(3.51 mmol/(m^(2)·d)),Fe(0.174 mmol/(m^(2)·d))and Ba(0.024 mmol/(m^(2)·d)),but the Cu sink(−0.55μmol/(m^(2)·d))and other metals exhibited a seasonal source‒sink conversion.The seasonal variation of dissolved organic matter and the fresh groundwater proportion in subterranean estuaries may have an important effect on metals fluxes especially for the Fe,Mn and Ba.Our result shows that the single seasonal metal fluxes estimation applied to the annual scale will cause a large deviation,up to 3.6 times for Fe,5.5 times for Mn,and 15 times for Ba.Therefore,the influence of seasonal fluctuations on SGDderived metal fluxes cannot be ignored,and our findings will be important for comprehending the metal budget and cycle in nearshore environment.展开更多
Disposal of spent nuclear fuel and long lived radioactive waste in deep clay geological formations is one of the promising options worldwide. In this concept of the geological disposal system, the host clay formation ...Disposal of spent nuclear fuel and long lived radioactive waste in deep clay geological formations is one of the promising options worldwide. In this concept of the geological disposal system, the host clay formation is considered as a principal barrier on which the fulfillment of key safety functions rests. Between 2006 and 2010, the European Commission project TIMODAZ, which gathered 15 partners from 8 countries, has investigated the coupled thermo-hydro-mechanical （THM） effects on clay formations for geological disposal of radioactive waste, and specific attention was paid to investigating the thermal effect on the evolution of the damaged zone （DZ）. Three types of potential host clay formations were investigated： the Boom Clay （Belgium）, the Opalinus Clay （Switzerland） and the Callovo-Oxfordian argillite （France）. Intensive experimental （laboratory and in situ in underground research laboratories） and numerical studies have been performed. Multi-scale approach was used in the course of the project. High degree of similarities between the failure modes, sealing process, stress paths, deformation, etc., observed in laboratories and in situ has been obtained, which increased the confidence in the applicability of laboratory test results and up-scaling perspective. The results of the laboratory and in situ tests obtained allowed the parameters for numerical models at various scales to be derived and provided the basis for the simplified performance assessment models that are used to assess the long-term safety of a repository. The good cooperation between the numerical modeler and experimenters has allowed an in-depth analysis of the experimental results and thus better understanding the underlying processes, and consequently increased the capabilities to model the THM effects in claystones. This paper presents the main achievements obtained by TIMODAZ project and shows how a European scientific community investigates a problem of concern in a collaborative way and how the obtained main results are applied to the performance assessment of a geological repository.展开更多
25 years ago,Mr.Ron Muir presented a paper to the National Lubricating Grease Institute(NLGI) on a new technology that he developed titled"High Performance Calcium Sulfonate Complex Grease".This was the intr...25 years ago,Mr.Ron Muir presented a paper to the National Lubricating Grease Institute(NLGI) on a new technology that he developed titled"High Performance Calcium Sulfonate Complex Grease".This was the introduction of the modern version of the calcium sulfonate grease technology that we know today.Most other technology would be considered mature after 25 years on the market,however,calcium sulfonate complex grease continues to grow and to find new applications in the lubricant industry.According to the NLGI production survey,it accounted for more than 45 million pounds of production in 2011.This technology is noted for bringing value to the lubrication environment,over other technologies,particularly in areas where heat,water,and high loads exist.It is a technology that solves problems.It is used extensively in North America and Europe.This paper will review the chemistry and properties behind calcium sulfonate complex grease and will examine several industries where it has had an impact.展开更多
Objective:To evaluate the effects of testosterone(T)on the maintenance of corpus cavernosum(CC)structure and apoptosis.Methods:Animals were divided into three groups:sham operation group(n Z 8)underwent sham operation...Objective:To evaluate the effects of testosterone(T)on the maintenance of corpus cavernosum(CC)structure and apoptosis.Methods:Animals were divided into three groups:sham operation group(n Z 8)underwent sham operation;Orchiectomized(Orchiec)t oily vehicle group(n Z 8)underwent bilateral orchiectomy and received a single dose of oily vehicle by intramuscular injection(i.m.)30 days after orchiectomy;and Orchiec t T group(n Z 8)underwent bilateral orchiectomy and received a single dose of T undecanoate 100 mg/kg i.m.30 days after the surgery.Animals were euthanized 60 days after the beginning of the experiment with an anesthetic overdose of ketamine and xylazine.Blood samples and penile tissue were collected on euthanasia.展开更多
In this study the effect of collagen-polyvinylpyrrolidone (collagen- PVP) vs. triamcinolone acetonide (Triam) in scleroderma (SSc) skin lesions was evaluated. Ten SSc patients were treated weekly with subcutaneous inj...In this study the effect of collagen-polyvinylpyrrolidone (collagen- PVP) vs. triamcinolone acetonide (Triam) in scleroderma (SSc) skin lesions was evaluated. Ten SSc patients were treated weekly with subcutaneous injections of 0.2 mL Triam (8 mg/mL) or 0.2 mL collagen- PVP (1.66 mg collagen). Skin biopsies were obtained from lesions before and after treatment. Tissue sections were evaluated by histology and immunohistochemistry (ELAM-1, VCAM- 1, IL- 1β ,TNF-α ,TGF-β 1 and PDGF). The corticoid- treated group showed abnormal tissue architecture while the biodrug- treatment restored cutaneous appendages and type I/III collagen proportion. Cytokine and adhesion molecule expression was almost inhibited with Triam, while collagen-PVP down- regulated it. Collagen-PVP improved the tissue architecture of SSc lesions and down regulated some proinflammatory parameters, without the side effects induced by corticoids.展开更多
文摘Endoscopic ultrasound-guided biliary drainage(EUS-BD)directs bile flow into the digestive tract and has been mostly used in patients with malignant biliary obstruction(MBO)where endoscopic retrograde cholangiopancreatography-guided biliary drainage was unsuccessful or was not feasible.Lumen apposing metal stents(LAMS)are deployed during EUS-BD,with the newer electrocautery-enhanced LAMS reducing procedure time and complication rates due to the inbuilt cautery at the catheter tip.EUS-BD with electrocautery-enhanced LAMS has high technical and clinical success rates for palliation of MBO,with bleeding,cholangitis,and stent occlusion being the most common adverse events.Recent studies have even suggested comparable efficacy between EUS-BD and endosc-opic retrograde cholangiopancreatography as the primary approach for distal MBO.In this editorial,we commented on the article by Peng et al published in the recent issue of the World Journal of Gastrointestinal Surgery in 2024.
文摘Highly specific interactions between biomolecules,such as antigen-antibody,protein-ligand,or nucleic acid base pair complementary are on the basis of the organization of complex organisms.The same principles may be tentatively used in molecular medicine for diagnosis and therapeutics.A molecule can be designed to selectively bind a protease and thereby inhibit the production of a peptide that forms toxic aggregates in the brain or an antibody may be produced to bind specifically to that peptide for detection or clearance purposes.Unfortunately,interference in biological systems is not that simple.For a start there is the inhibition of the physiological role of the protease;moreover,several cleavage fragments may be produced,which may continue to diverge due to putative post-translational modification and self-assembly processes,hiding the toxic target in a“soup”of peptide species varying in size,structure and chemical composition.A perspective of the current status and challenges in targeting peptide species for diagnosis and treatment in the context of Alzheimer’s disease is given.
文摘In the context of education internationalization,the internationalization of higher education has become a major trend in the field of education in most countries,with international student education as the core.This phenomenon promotes cultural exchanges and integration among countries as well as higher education reform,which is of great significance in enhancing the international influence of higher education in each country.However,there are also some challenges faced by higher education students when studying abroad.The article digs into the origin and history of studying abroad,analyzes the current situation and reasons for higher education students in China to study abroad,discusses the opportunities and challenges faced by higher education students in China when studying abroad,and analyzes the trend of studying abroad in China.
基金This study was partially supported by three grants from the National Science Foundation:TICOLICHEN-The Costa Rican Lichen Biodiversity Inventory(DEB 0206125 to The Field MuseumPI Robert Lücking)+12 种基金Neotropical Epiphytic Microlichens-An Innovative Inventory of a Highly Diverse yet Little Known Group of Symbiotic Organisms(DEB 0715660 to The Field MuseumPI R.Lücking)Phylogenetic Diversity of Mycobionts and Photobionts in the Cyanolichen Genus Dictyonema,with Emphasis on the Neotropics and the Galapagos Islands(DEB 0841405 to George Mason UniversityPI J.LawreyCo-PIs:R.Lücking,P.Gillevet).The Verein der Freunde des Botanischen Gartens und Botanischen Museums Berlin-Dahlem e.V.(https://www.bgbm.org/de/BGBM/freunde/index.html)supported molecular sequencing work for specimens collected as part of the Pilotprojekt Kooperation mit dem Botanischen Garten Bogotá(BMBF,see below).The Universidad Distrital Francisco Jose´de Caldas,Bogota´,is thanked for the support to the lichen herbarium and the curatorial work of the UDBC collections.The Jardı´n Bota´nico de Bogota´Jose´Celestino Mutis organized field trips to Sumapaz,Pen˜a Blanca,and Pasquilla(Bogota´),by agreement with the Botanical Garden and Botanical Museum Berlin,partially financed through the German Federal Ministry of Education and Research(BMBFPilotprojekt Kooperation mit dem Botanischen Garten BogotáForderkennzeichen:01DN13030).The Universidad de los Andes,Bogota´,provided logistic support for field work in Chingaza.Fe´lix Fernandez,owner of El Secreto Private Reserve in Garagoa,Colombia,is thanked for providing access to the area.The Galapagos Lichen Inventory acknowledges support by successive science directors of the Charles Darwin Foundation(Alan Tye,Mark Gardener,Rodolfo Martinez,Ulf Hardter,and Noemi d’Ozouville)executive director Arturo Izurieta.Frank Bungartz and collaborators are further indebted to the Directorate of the Galapagos National Park(particular Galo Quezada and Victor Carrio´n,granting specimen export permits)This publication is contribution no.2145 of the Charles Darwin Foundation for the Galapagos Islands.The Conselho Nacional de Desenvolvimento Cientı´fico e Tecnolo´gico(CNPq)is thanked for research grants and field trip fundings(Processos 311706/2012-6,401186/2014-8CNPq-Sisbiota 563342/2010-2)M.Ca´ceresPVE grant(Processo 314570/2014-4)M.Ca´ceres and R.Lücking.Research by G.Weerakoon was funded by the National Geographic Society and Dilmah Conservation,and G.Weerakoon would like to thank Thorsten Lumbsch,Pat Wolseley,Omal Arachchige,Dushantha Wasala and Dulan Vidanapathirana for further support.Research by K.Wilk was funded by the W.Szafer Institute of Botany,Polish Academy of Sciences,through a statutory fund.We are indebted to the Gala´pagos National Park,especially its technical director,Washington Tapia,for support and specimen export permits.Material from Costa Rica was also collected during two lichen courses of the Organization for Tropical Studies(OTS).Paul M.Kirk assisted with batch registration of the new species on Index Fungorum and Subashini C.Jayasiri with batch registration on Faces of Fungi.
文摘Following a large-scale phylogenetic study of the lichenized genus Cora(Basidiomycota:Agaricales:Hygrophoraceae),we formally describe 70 new species,honouring the seventieth birthday of David Leslie Hawksworth,one of the preeminent figures in mycology and lichenology in the past 50 years.Based on an updated phylogeny using the ITS fungal barcoding locus,we now recognize 189 taxa in a genus that until recently was considered to represent a single species;including this contribution,92 of these are formally recognized,including five taxa based on historical names or collections that have not been sequenced.Species of Cora can be recognized by a combination of morphological(size,colour,lobe configuration,surface hairs,hymenophore size and shape),anatomical(thallus thickness,cortex structure,photobiont type,hyphal papillae),and ecogeographical features(substrate,habitat,distribution),and a keytable allowing the identification of all accepted taxa is provided.The new species are:Cora accipiter Moncada,Madrin˜a´n&Lücking spec.nov.,C.applanata Moncada,Soto-Medina&Lücking spec.nov.,C.arachnodavidea Moncada,Dal Forno&Lücking spec.nov.,C.arborescens Dal Forno,Chaves&Lücking spec.nov.,C.arcabucana Moncada,C.Rodrı´guez&Lücking spec.nov.,C.aturucoa Lücking,Moncada&C.Vargas spec.nov.,C.auriculeslia Moncada,Ya´nez-Ayabaca&Lücking spec.nov.,C.barbifera Moncada,Patin˜o&Lücking spec.nov.,C.boleslia Lücking,E.Morales&Dal Forno spec.nov.,C.caliginosa Holgado,Rivas Plata&Perlmutter spec.nov.,C.campestris Dal Forno,Eliasaro&Spielmann spec.nov.,C.canari Nugra,Dal Forno&Lücking spec.nov.,C.caraana Lücking,Martins&Lucheta spec.nov.,C.casasolana Moncada,R.-E.Pe´rez&Lücking spec.nov.,C.caucensis Moncada,M.Gut.&Lücking spec.nov.,C.celestinoa Moncada,CabreraAmaya&Lücking spec.nov.,C.comaltepeca Moncada,R.-E.Pe´rez&Herrera-Camp.spec.nov.,C.corani Lücking,E.Morales&Dal Forno spec.nov.,C.corelleslia Moncada,A.Sua´rez-Corredor&Lücking spec.nov.,C.crispoleslia Moncada,J.Molina&Lücking spec.nov.,C.cuzcoensis Holgado,Rivas Plata&Perlmutter spec.nov.,C.dalehana Moncada,Madrin˜a´n&Lücking spec.nov.,C.davibogotana Lücking,Moncada&Coca spec.nov.,C.davicrinita Moncada,Madrin˜a´n&Lücking spec.nov.,C.davidia Moncada,L.Vargas&Lücking spec.nov.,C.dewisanti Moncada,A.Sua´rez-Corredor&Lücking spec.nov.,C.dulcis Moncada,R.-E.Pe´rez&Lücking spec.nov.,C.elephas Lücking,Moncada&L.Vargas spec.nov.,C.fuscodavidiana Lücking,Moncada&L.Vargas spec.nov.,C.garagoa Simijaca,Moncada&Lücking spec.nov.,C.gigantea Lücking,Moncada&Coca spec.nov.,C.gomeziana Dal Forno,Chaves&Lücking spec.nov.,C.guajalitensis Lücking,Robayo&Dal Forno spec.nov.,C.hafecesweorthensis Moncada,Lücking&R.Pela´ez spec.nov.,C.haledana Dal Forno,Chaves&Lücking spec.nov.,C.hawksworthiana Dal Forno,P.Nelson&Lücking spec.nov.,C.hochesuordensis Lücking,E.Morales&Dal Forno spec.nov.,C.hymenocarpa Lücking,Chaves&Lawrey spec.nov.,C.imi Lücking,Chaves&Lawrey spec.nov.,C.itabaiana Dal Forno,Aptroot&M.Ca´ceres spec.nov.,C.leslactuca nov.,C.maxima Wilk,Dal Forno&Lücking spec.nov.,C.minutula Lücking,Moncada&Ya´nez-Ayabaca spec.nov.,C.palaeotropica Weerakoon,Aptroot&Lücking spec.nov.,C.palustris Dal Forno,Chaves&Lücking spec.nov.,C.parabovei Dal Forno,Kukwa&Lücking spec.nov.,C.paraciferrii Lücking,Moncada&J.E.Hern.spec.nov.,C.paraminor Dal Forno,Chaves&Lücking spec.nov.,C.pastorum Moncada,Patin˜o&Lücking spec.nov.,C.pichinchensis Paredes,Jonitz&Dal Forno spec.nov.,C.pikynasa J.-M.Torres,Moncada&Lücking spec.nov.,C.pseudobovei Wilk,Dal Forno&Lücking spec.nov.,C.pseudocorani Lücking,E.Morales&Dal Forno spec.nov.,C.putumayensis L.J.Arias,Moncada&Lücking spec.nov.,C.quillacinga Moncada,F.Ortega&Lücking spec.nov.,C.rothesiorum Moncada,Madrin˜a´n&Lücking spec.nov.,C.rubrosanguinea Nugra,Moncada&Lücking spec.nov.,C.santacruzensis Dal Forno,Bungartz&Ya´nezAyabaca,spec.nov.,C.schizophylloides Moncada,C.Rodrı´guez&Lücking spec.nov.,C.smaragdina Lücking,Rivas Plata&Chaves spec.nov.,C.soredavidia Dal Forno,Marcelli&Lücking spec.nov.,C.subdavicrinita Moncada,J.Molina&Lücking spec.nov.,C.suturifera Nugra,Besal&Lücking spec.nov.,C.terrestris Dal Forno,Chaves&Lücking spec.nov.,C.terricoleslia Wilk,Dal Forno&Lücking spec.nov.,C.udebeceana Moncada,R.Pela´ez&Lücking,Moncada&R.Pela´ez spec.Lücking spec.nov.,C.urceolata Moncada,Coca&Lücking spec.nov.,C.verjonensis Lücking,Moncada&Dal Forno spec.nov.,C.viliewoa Lücking,Chaves&Soto-Medina spec.nov.,and C.yukiboa Mercado-Dı´az,Moncada&Lücking spec.nov.Furthermore,the taxonomic status of the recently described or recognized species C.arachnoidea,C.aspera,C.ciferrii,and C.reticulifera,is revised.
基金The National Key Research and Development Program of China under contract No.2018YFD0900702the National Natural Science Foundation of China under contract Nos 41976040,41976041 and 42006152.
文摘Submarine groundwater discharge(SGD)plays a major role as a conveyor of metals to coastal waters.However,the seasonal change of metal fluxes derived through SGD is unclear.Here,we evaluated the behaviours and fluxes of trace metals(Mn,Fe,Ba,Pb,U,Cr,Zn,Cu)in an estuary under different seasonal conditions.The behaviours of trace metals revealed that SGD was the source of Mn(3.51 mmol/(m^(2)·d)),Fe(0.174 mmol/(m^(2)·d))and Ba(0.024 mmol/(m^(2)·d)),but the Cu sink(−0.55μmol/(m^(2)·d))and other metals exhibited a seasonal source‒sink conversion.The seasonal variation of dissolved organic matter and the fresh groundwater proportion in subterranean estuaries may have an important effect on metals fluxes especially for the Fe,Mn and Ba.Our result shows that the single seasonal metal fluxes estimation applied to the annual scale will cause a large deviation,up to 3.6 times for Fe,5.5 times for Mn,and 15 times for Ba.Therefore,the influence of seasonal fluctuations on SGDderived metal fluxes cannot be ignored,and our findings will be important for comprehending the metal budget and cycle in nearshore environment.
基金funded by the European Commission through the TIMODAZ project within the 6th framework programme (Contract Number: FI6W-CT-2007-036449)
文摘Disposal of spent nuclear fuel and long lived radioactive waste in deep clay geological formations is one of the promising options worldwide. In this concept of the geological disposal system, the host clay formation is considered as a principal barrier on which the fulfillment of key safety functions rests. Between 2006 and 2010, the European Commission project TIMODAZ, which gathered 15 partners from 8 countries, has investigated the coupled thermo-hydro-mechanical （THM） effects on clay formations for geological disposal of radioactive waste, and specific attention was paid to investigating the thermal effect on the evolution of the damaged zone （DZ）. Three types of potential host clay formations were investigated： the Boom Clay （Belgium）, the Opalinus Clay （Switzerland） and the Callovo-Oxfordian argillite （France）. Intensive experimental （laboratory and in situ in underground research laboratories） and numerical studies have been performed. Multi-scale approach was used in the course of the project. High degree of similarities between the failure modes, sealing process, stress paths, deformation, etc., observed in laboratories and in situ has been obtained, which increased the confidence in the applicability of laboratory test results and up-scaling perspective. The results of the laboratory and in situ tests obtained allowed the parameters for numerical models at various scales to be derived and provided the basis for the simplified performance assessment models that are used to assess the long-term safety of a repository. The good cooperation between the numerical modeler and experimenters has allowed an in-depth analysis of the experimental results and thus better understanding the underlying processes, and consequently increased the capabilities to model the THM effects in claystones. This paper presents the main achievements obtained by TIMODAZ project and shows how a European scientific community investigates a problem of concern in a collaborative way and how the obtained main results are applied to the performance assessment of a geological repository.
文摘25 years ago,Mr.Ron Muir presented a paper to the National Lubricating Grease Institute(NLGI) on a new technology that he developed titled"High Performance Calcium Sulfonate Complex Grease".This was the introduction of the modern version of the calcium sulfonate grease technology that we know today.Most other technology would be considered mature after 25 years on the market,however,calcium sulfonate complex grease continues to grow and to find new applications in the lubricant industry.According to the NLGI production survey,it accounted for more than 45 million pounds of production in 2011.This technology is noted for bringing value to the lubrication environment,over other technologies,particularly in areas where heat,water,and high loads exist.It is a technology that solves problems.It is used extensively in North America and Europe.This paper will review the chemistry and properties behind calcium sulfonate complex grease and will examine several industries where it has had an impact.
基金We thank Urogenital Research Unit staff,UERJ,for technical support and UFCSPA,CNPq(MCT/CNPq 15/2007),Coordenac¸a˜o de Aperfeic¸oamento de Pessoal de Nıvel Superior e CAPES and FAPERGS(11/1003-5 e 02/2011)for financial support.
文摘Objective:To evaluate the effects of testosterone(T)on the maintenance of corpus cavernosum(CC)structure and apoptosis.Methods:Animals were divided into three groups:sham operation group(n Z 8)underwent sham operation;Orchiectomized(Orchiec)t oily vehicle group(n Z 8)underwent bilateral orchiectomy and received a single dose of oily vehicle by intramuscular injection(i.m.)30 days after orchiectomy;and Orchiec t T group(n Z 8)underwent bilateral orchiectomy and received a single dose of T undecanoate 100 mg/kg i.m.30 days after the surgery.Animals were euthanized 60 days after the beginning of the experiment with an anesthetic overdose of ketamine and xylazine.Blood samples and penile tissue were collected on euthanasia.
文摘In this study the effect of collagen-polyvinylpyrrolidone (collagen- PVP) vs. triamcinolone acetonide (Triam) in scleroderma (SSc) skin lesions was evaluated. Ten SSc patients were treated weekly with subcutaneous injections of 0.2 mL Triam (8 mg/mL) or 0.2 mL collagen- PVP (1.66 mg collagen). Skin biopsies were obtained from lesions before and after treatment. Tissue sections were evaluated by histology and immunohistochemistry (ELAM-1, VCAM- 1, IL- 1β ,TNF-α ,TGF-β 1 and PDGF). The corticoid- treated group showed abnormal tissue architecture while the biodrug- treatment restored cutaneous appendages and type I/III collagen proportion. Cytokine and adhesion molecule expression was almost inhibited with Triam, while collagen-PVP down- regulated it. Collagen-PVP improved the tissue architecture of SSc lesions and down regulated some proinflammatory parameters, without the side effects induced by corticoids.
