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Drift characteristics of green macroalgae in the Yellow Sea in 2008 and 2010

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Chinese Science Bulletin 2011年第21期56卷 2236-2242页

作者： QIAO Fangli WANG GuanSuo lüXinGang DAI DeJun The First Institute of Oceanography State Oceanic AdministrationQingdao 266061China key laboratory of Marine Science and Numerical Modeling(MASNUM) State Oceanic AdministrationQingdao 266061China

In order to investigate the aggregation mechanism of green macroalgae (Enteromorpha prolifera) on the Qingdao coastline,the macroalgal drift characteristics in the Yellow Sea during June and July in 2008 and 2010 were simulated using a three-dimensional wave-tide-circulation coupled *** June 2008,the monthly-mean surface current flowed onshore and its direction was almost perpendicular to the Qingdao coastline,which was identified as the main reason for a huge accumulation of algae in the coastal waters off *** current became parallel to the coastline in July 2008;this shift in current direction led to little accumulation of algae near Qingdao and thus relieved the environmental pressure on the Olympic sailing *** using the coupled model,we predicted that there would be no serious algal accumulation at Qingdao in late June 2010,which was later confirmed by *** study demonstrated that the drift path of macroalgae near Qingdao is mainly controlled by the surface current,which is primarily driven by *** climate change is therefore one of the means by which physical processes affect marine ecosystems.

关键词：海藻黄海海洋生态系统区域气候变化耦合模型海岸线聚集机制模型模拟

A STUDY OF DIRECTIONAlITY OF lATENT hARDENING BEhAVIOR IN AlUMINIUM SINGlE CRYSTAlS

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Acta Mechanica Solida Sinica 1996年第3期9卷 246-252页

作者： Wang, MZ Shi, l li, Ch Xiao, JM UNIV SCI & TEChNOl BEIJING DEPT MAT PHYSBEIJING 100083PEOPLES R CHINA

By defining the yield stress in a latent hardening test as the first deviation from the elastic straight line, the yielding and hardening behavior on a latent system in the positive and negative slip direction was studied in aluminium single crystals. It is shown that the yield stresses on both the positive and negative latent systems are about equal to or a little lower than the maximum resolved shear stress in the primary test, but much higher than that of the active system. The Influence of relative orientation and prestrain on latent hardening and initial work-hardening in the secondary test was also investigated, and it was found that there is a considerable effect on initial work-hardening, but none on latent hardening. With reasonable approximation, a hardening rule for single crystal could be proposed from the experimental results, that is, except for the yield stress on the system negative to the active system that is very low, hardening on the other systems is nearly the same as self-hardening.

关键词： latent hardening work-hardening Bauschinger effect aluminium single crystal plastic deformation

Coconut oil nanoemulsion attenuates methotrexate-induced hepatotoxicity and nephrotoxicity in Ehrlich ascites carcinoma-bearing mice

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Asian Pacific Journal of Tropical Biomedicine 2020年第12期10卷 540-546页

作者： Shaza A.Alyamani Mayson h.Alkhatib Faiza Abdu Department of Biochemistry Faculty of ScienceKing Abdulaziz UniversityJeddahSaudi Arabia Department of Biological Sciences Faculty of ScienceKing Abdulaziz UniversityJeddahSaudi Arabia

Objective:To evaluate the protective effect of the coconut oil nanoemulsion against methotrexate-induced hepatotoxicity and nephrotoxicity in Ehrlich ascites carcinoma-bearing Swiss albino ***:Forty mice were divided into four ***Ⅰserved as the untreated Ehrlich ascites carcinoma-bearing mice while Ehrlich ascites carcinoma-bearing mice in groupsⅡ–Ⅳreceived an intraperitoneal injection of 0.2 m l/kg coconut oil nanoemulsion,20 mg/kg methotrexate as well as 0.2 m l/kg coconut oil nanoemulsion mixed with 20 mg/kg methotrexate,*** toxicities of the treatments were assessed by determining the complete blood count,performing the serum analysis for liver and kidney functions,evaluating the oxidative status and visualizing histological changes in the liver and kidney ***:Treatment with methotrexate and coconut oil nanoemulsion markedly diminished the liver parameters including aspartate aminotransferase,alanine aminotransferase,alkaline phosphatase,total protein,direct bilirubin and total bilirubin which were raised by methotrexate treatment(Plarly,creatinine and blood urea nitrogen,as the indicators of kidney function,were dramatically lowered in the combination treatment group compared to the methotrexate group(Ph methotrexate and coconut oil nanoemulsion reduced the malondialdehyde and increased catalase,glutathione reductase and superoxide dismutase,in the liver and kidney tissues(Phe treatment with methotrexate and coconut oil nanoemulsion reduced white blood cell count and increased the hemoglobin amount(Phange in platelets and red blood cell ***:Coconut oil nanoemulsion as a nanocarrier has great potential in reducing the adverse side effects induced by methotrexate.

关键词： Chemotherapeutic agents Oxidative stress Serum analysis Complete blood count Nanocarrier

Current understanding of the molecular mechanisms in Parkinson's disease:Targets for potential treatments

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Translational Neurodegeneration 2017年第1期6卷 256-290页

作者： Panchanan Maiti Jayeeta Manna Gary l.Dunbar Field Neurosciences Institute laboratory for Restorative Neurology Mt.PleasantMI 48859USA Program in Neuroscience Mt.PleasantMI 48859USA Department of Psychology Central Michigan UniversityMt.PleasantMI 48859USA Field Neurosciences Institute St.Mary’s of MichiganSaginawMI 48604USA Department of Biology Saginaw Valley State UniversitySaginawMI 48604USA Department of Physiology University of Tennessee Health Science CenterMemphisTN 38105USA

Gradual degeneration and loss of dopaminergic neurons in the substantia nigra,pars compacta and subsequent reduction of dopamine levels in striatum are associated with motor deficits that characterize Parkinson’s disease(PD).In addition,half of the PD patients also exhibit frontostriatal-mediated executive dysfunction,including deficits in attention,short-term working memory,speed of mental processing,and *** most commonly used treatments for PD are only partially or transiently effective and are available or applicable to a minority of ***,these therapies neither restore the lost or degenerated dopaminergic neurons,nor prevent or delay the disease progression,the need for more effective therapeutics is *** this review,we provide a comprehensive overview of the current understanding of the molecular signaling pathways involved in PD,particularly within the context of how genetic and environmental factors contribute to the initiation and progression of this *** involvement of molecular chaperones,autophagy-lysosomal pathways,and proteasome systems in PD are also *** addition,emerging therapies,including pharmacological manipulations,surgical procedures,stem cell transplantation,gene therapy,as well as complementary,supportive and rehabilitation therapies to prevent or delay the progression of this complex disease are reviewed.

关键词： Parkinson’s disease Neurodegeneration Protein misfolding Molecular chaperones Cell therapy

Myxomycetes associated with grasslands of the western central United States

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Fungal Diversity 2013年第2期59卷 147-158页

作者： Adam W.Rollins Steven l.Stephenson Department of Biology Lincoln Memorial UniversityHarrogateTN 37752USA Department of Biological Sciences University of ArkansasFayettevilleAR 72701USA

The assemblages of myxomycetes associated with the three types of temperate grasslands(tall grass,mixed grass and short grass)found across the western central United States were examined by collecting samples for isolation of these organisms from nine study *** consisted of two types of ground litter,two types of aerial litter(dead but still attached plant parts)and *** were brought back to the laboratory and used to prepare a series of moist chamber *** cultures yielded 1,301 collections of myxomycetes representing 59 species in 18 *** collections could be identified only to genus and one in particular(lepidoderma sp.)appears to be an undescribed *** spectabile was recorded for the first time in North ***,only eight species(Badhamia melanospora,Didymium anellus,***,***,Perichaena depressa,Physarum cinereum,***,and Stemonitis fusca)were recovered from all nine study sites and thus are considered to represent a core component of the myxomycete biota of temperate grasslands.

关键词： Community ecology Ecological distribution Grasslands Microhabitat Myxogastrids

INTRODUCTION OF NEW ANTICORROSIVE DESIGN FOR REACTORS EXPOSED TO hIGh TEMPERATURE AND hIGh PRESSURE hYDROGEN

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Acta Metallurgica Sinica(English letters) 1999年第5期12卷 932-935页

作者： J.l. li 1,2) , k.F. Wong 3) and G.h. Zhu 3) 1) Fushun Petroleum Institute,Fushun 113001,China 2) State key laboratory for Corrosion and Protection of Metal,Institute of Corrosion and Protection of Metals, The Chinese Academy of Sciences,S

This paper integrates the characteristic of structure design and manufacture and maintenance for Chinese flat steel band wound pressure vessel(UCWPV) with the problems existing in current in service high temperature and pressure vessel exposed to hydrogen. In view of economy and safety it is suggested that it be practicable for UCWPV to act as reactors for platreating, hydrogenating, and catforming. UCWPV has not only potential advantages, but also removes shortages present in in-service reactors for hydrogen.

关键词： design pressure vessel hydrogen attack

leaf size versus leaf numbertradeoffs in dioecious angiosperms

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Journal of Plant Ecology 2013年第1期6卷 29-35页

作者： Stephanie l.Scott lonnie W.Aarssen Department of Biology Queen’s UniversityKingstonOntarioCanada K7L 3N6

Aims We explore the possible role of leaf size/number trade-offs for the interpretation of leaf size dimorphism in dioecious plant *** Total above-ground biomass(both male and female)for three herbaceous dioecious species and individual shoots(from both male and female plants)for three woody dioecious species were sampled to record individual leaf dry mass,number of leaves,dry mass of residual above-ground tissue(all remaining non-leaf biomass),number of flowers/inflorescences(for herbaceous species)and number of *** Findings For two out of three woody species and two out of three herbaceous species examined,male plants produced smaller leaves but with higher leafing intensity—*** leaves per unit of supporting(residual)shoot tissue or plant body mass—compared with *** and female plants,however,did not differ in shoot or plant body mass or branching *** interpret these results as possible evidence for a dimorphic leaf deployment strategy that promotes both male and female function,*** male plants,capacity as a pollen donor may be favored by selection for a broadly spaced floral display,hence favoring relatively high leafing intensity because this provides more numerous axillary meristems that can be deployed for flowering,thus requiring a relatively small leaf as a *** one herbaceous species,higher leafing intensity in males was associated with greater flower production than in *** contrast,in female plants,selection favors a relatively large leaf,we propose,because this promotes greater capacity for localized photosynthate production,thus supporting the locally high energetic cost of axillary fruit and seed development,which in turn requires a relatively low leafing intensity as a trade-off.

关键词： bud bank leaf dimorphism leafing intensity dioecy

Asymmetric or diffusive co-evolution generates meta-populations in fig-fig wasp mutualisms

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Science China(life Sciences) 2014年第6期57卷 596-602页

作者： WANG RuiWu YANG Yan WIGGINS Natasha l. State key laboratory of Genetic Resources and Evolution Kunming Institute of ZoologyChinese Academy of Sciences School of Plant Science University of Tasmania

Co-evolutionary theory assumes co-adapted characteristics are a positive response to counter those of another species,whereby co-evolved species reach an evolutionarily stable interaction through bilateral ***,evidence from the fig-fig wasp mutualistic system implies very different co-evolutionary selection mechanisms,due to the inherent conflict among interacted *** plants appear to have discriminatively enforced fig wasps to evolve"adaptation characteristics"that provide greater benefit to the fig,and fig wasps appear to have diversified their evolutionary strategies in response to discriminative enforcement by figs and competition among different fig wasp *** what appears to be an asymmetric interaction,the prosperity of cooperative pollinating wasps should inevitably lead to population increases of parasitic individuals,thus resulting in localized extinctions of pollinating *** response,the sanctioning of parasitic wasps by the fig should lead to a reduction in the parasitic wasp *** meta-populations created by such asymmetric interactions may result in each population of coevolved species chaotically oscillated,temporally or evolutionarily.

关键词： asymmetric co-evolution inter-specific cooperation meta-population mutualism

Esophageal stent fracture:case report and review of the literature

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World Journal of Gastroenterology 2014年第10期20卷 2715-2720页

作者： harshit S khara David l Diehl Seth A Gross Department of Gastroenterology and Nutrition Geisinger Medical Center Danville PA 17822 United States Division of Gastroenterology NYU School of Medicine NYU Langone Medical Center New York NY 10028United States

Endoscopic esophageal stent placement is widely used in the treatment of a variety of benign and malignant esophageal *** expanding metal stents(SEMS)are associated with significantly reduced stent related mortality and morbidity compared to plastic stents for treatment of esophageal conditions;however they have known complications of stent migration,stent occlusion,tumor ingrowth,stricture formation,reflux,bleeding and perforation amongst others.A rare and infrequently reported complication of SEMS is stent fracture and subsequent migration of the broken *** have only been a handful of published case reports describing this *** this report we describe a case of a spontaneously fractured nitinol esophageal SEMS,and review the available literature on the unusual occurrence of SEMS fracture placed for benign or malignant obstruction in the *** fracture could be a potentially dangerous event and should be considered in a patient having recurrent dysphagia despite successful placement of an esopha-geal *** usually requires endoscopic therapy and may unfortunately require surgery for retrieval of a distally migrated *** recognition and prompt management may be able to prevent further problems.

关键词： Esophagus Self-expanding metal stent Stent complication Stent fracture Stent migration