Advances in Pathobiology of Alveolar Echinococcosis

泡状棘球蚴病 (alveolarechinococcosis,AE)是一种重要的人兽共患寄生虫病。本文综述了其病原泡状棘球蚴的地理分布、宿主类别、传播情况及其发育生物学方面的研究情况 ,指出研究病原生物学的现实意义和今后仍需努力的方向。The alveolar echinococcosis (AE),one of the most dangerous parasitic zoonosis in many parts of the world,is caused by infection with larva of Echinococcus multilocularis. This review mainly summarizes the recent pathobiology knowledge of AE: the etiologic agents;the geographic distribution throughout the north hemisphere;the intermediate host and definite host;the life-cycle pattern;and the developmental biology of the parasite. Meanwhile,in order to prevent and control this disease,the current significance and its research prospect are discussed

A new species of Encotyllabe from marine fishes in Minnan-Taiwan Bank,Fujian,China

报道了闽南-台湾浅滩野生鱼类真鲷(Pagrosomusmajor)鳃丝上寄生的分室科中柄虫属一新种——厦门中柄虫Encotyllabexiamenensissp.nov.,虫体在体型、体长宽比、大钩和小钩长度比值、小钩的形状、卵黄腺的分布以及卵巢的位置等特征与现有种类存在一定差异,且在卵巢左侧具有发达的肌肉束.A new species of Encotyllabe was reported. The type specimens are deposited in Parasitology Research Laboratory, Xiamen University. Encotyllabe xiamenensis sp. nov. (Plate I). Host: Pagrosomus major. Location: Gill. Locality: Minnan-Taiwan Bank, China. 23.5~24.3 °N, 117.5~118 °E.Body elongate 4.55~5.53 long including opisthaptor, 1.13~1.43 wide. Prohaptor in form of 2 large, frilled lobes, each bearing muscular sucker, 0.17~0.29 in diameter. Eye-spots, 2 pairs. Opisthaptor bell-shaped, aseptate, with plicated marginal membrane, armed with pair of large broad hamuli, pair of minute hamuli and 14 marginal hooklets. Opisthaptor 0.59~0.96 in diameter; large and small hamuli 350~410 μm and 27.5~35 μm long, respectively. Marginal hooklets 10~13.75 μm long. Testes 2, elongate-oval, 0.39~0.45×0.27~0.35. Vas deferens convoluted, winding anteriorly on the left side of body, dorsal to vitelline reservoir, entering base of penis bulb and enlarging inside to form internal seminal vesicle. Large prostatic reservoir outside penis; prostatic duct joins ejaculatory duct proximal to tip of penis bulb. One very stout band of muscle extend anteriorly on left side from level of ovary, joining to the base of penis bulb. Ovary pre-testicular 0.23~0.38 in diameter, with an intra-ovarian seminal vesicle. Uterus extends antero-laterally along dorso-lateral side of penis. Vaginal pore on ventral side at level of vitelline reservoir. Vitellarium extensive, in lateral and median fields, from level of pharynx to near base of peduncle. No eggs were observed.浙江大学医学院中青年科研启动基金

1976 Vol. 24 Number 11

https://engagedscholarship.csuohio.edu/lawpublications_gavel1970s/1100/thumbnail.jp

高首效富镍正极材料LiNi0.6Co0.2Mn0.2O2的合成及电化学性能研究

采用共沉淀—高温固相烧结的方法合成了富镍正极材料LiNi0.6Co0.2Mn0.2O2（简称NCM622）,通过X射线粉末衍射（XRD）/Rietveld精修法、扫描电子显微镜（SEM）及电化学测试,对不同温度下合成材料的结构、形貌、电化学性能进行表征.结果表明,800℃下NCM622阳离子混排程度最低（1.97%）,首周库仑效率高达92.2%,100周容量保持率为81.4%.国家自然科学基金项目(No.21233004,No.21428303)资

锂离子电池高镍正极材料掺铝的作用及掺铝方法的研究

为了探究铝对高镍层状氧化物在结构、形貌及性能方面的影响,本文采用两种不同的方式掺铝以制备NCA正极材料(Li Ni0.8Co0.15Al0.05O2):一是固相法即将共沉淀合成的NC前驱体(Ni0.84Co0.16（OH）2)在混锂烧结过程混入铝源（纳米Al2O3或Al（NO3）3）;二是共沉淀法即直接在合成前驱体过程中混入铝源（Al2（SO4）3或NaAlO2）即合成NCA前驱体(Ni0.8Co0.15Al0.05（OH）2.05)后再混锂烧结.结果表明,掺铝能够降低阳离子混排程度、维持层状结构的稳定性,改善材料在充放电循环过程的放电电压及中值电压大幅下降的情况,提高其循环性能.其中以NaAlO2为铝源合成NCA前驱体所制备的NCA材料性能最优:在3.0～4.3 V充放电区间,0.1C倍率下首圈放电比容量达198 m Ah·g-1,首次库仑效率可达94.6%,1C倍率下循环200圈后容量保持率达70%

细长轴对称体的水弹性振动特性分析

以在水中做纵向平面内运动的细长轴对称体为研究对象.在建立描述流体-结构耦合振动系统的计算模型时,对固体采用位移(包括刚体运动位移和弹性Euler梁振动位移),对流体采用压力作为基本变量,首先建立了考虑流体作用力的结构动力学方程,推导了考虑结构运动的流体压力表达式,分析了水动力载荷的特征:包括水动压力的来源,组成,分布形式与影响范围等.在此基础上给出了描述水中运动物体的位移(结构)-压力(流体)格式的流固耦合系统模型.然后利用有限元数值方法(FEM)对方程进行了求解,克服了解析解对研究对象外形的限制,同时避免了流固耦合直接数值模拟中CFD+FEM的复杂性,对于典型的工程结构非常适用.最后,通过算例给出了水中运动物体的水弹性频率和模态,并将计算结果与试验结果进行了对比,证明了本文计算模型的有效

Trapezoid Printed Monopole Band-Notched UWB Antenna

设计了带三角形槽梯形辐射元和阶梯接地面的30 MMx30 MM印制单极超宽带天线原型。实验结果表明,原型天线驻波比小于2的阻抗带宽为2.8 gHz~12.81 gHz,频带内天线具有全向辐射特性,增益变化平坦,相位中心稳定。通过对原型天线振子体的缝隙加载,实现了具有带阻特性的陷波超宽带天线,其驻波比大于3的陷波频带为4.8 gHz~6.0 gHz,陷波频带内最高增益抑制为9 db,而其他频段性能与原型天线基本一致。A trapezoid printed monopole Ultra Wide Band(UWB) antenna of the triangular cut and step ground plane is designed as the prototype,which size is 30 mm×30 mm.The experimental results show that its impedance band width is from 2.8 GHz to 12.81 GHz defined by Voltage Standing Wave Ratio(VSWR) less than 2.Over the operating band the prototype antenna has omni-directional radiating pattern,stable antenna gain and fixed phase center.By cutting a slot in the radiator of the prototype,the band-notched antenna is introduced.Its notch band is from 4.8 GHz to 6.0 GHz defined by VSWR≥3,and the largest gain rejection ratio is 9 dB.In the other working bands the band-notched antenna has the similar radiating performance with the prototype.福建省重大科技专项(2010HZ0004-1

SCANNING ELECTRON MICROSCOPICAL OBSERVATION ON ADULT NEOBENEDENIA MELLENI(MONOGENEA,CAPSALIDAE)

报道寄生于福建海水养殖鱼类高体的玫氏新本尼登虫 (单殖吸虫纲 ,分室科 )的扫描电镜观察。虫体体表无棘 ,前吸器和后吸器盘状。副甲片、前钩和后钩位于鞘内Neobenedenia melleni(MacCallum,1927) Yamaguti,1963,a capsalid monogenean parasitising the skin of marine cultured fish,Seriola dumerili(Carangidae) was studied by scanning electron microscope (SEM).The body surface of N.melleni lacks spines.Both the anterior attachment organs and haptor are disc shaped,the accessory sclerites,anterior hamuli and posterior hamuli are sheathed in tegument.Accessory sclerites possess sharp distal tips.Anterior hamuli and posterior hamuli possess curved tip,and marginal hooklets are arranged radially around haptor.ThisworkwassupportedbytheFujianProvincialNaturalScienceFoundation (B 991 0 0 0 5

A New Genus Record of Phyllobothriidae from Marine Fish Dasyatis akajei in China

报道检获于厦门海域赤魟(Dasyatis akajei)肠道中的四叶目叶槽科蔷薇属叶枕蔷薇线虫Rhodobothriumpulvinatum Linton 1889,经鉴定比较,为我国鱼类绦虫属的新记录。本次共剖检赤魟46尾,阳性2尾,感染率为4.3％,感染强度为5～7条/尾,并对所获虫体进行了描述。Rhodobothrium pulvinatum, one species of Phyllobothriidae (Cestoda: Tetraphyllidea) from marine fish Dasyatis akajei in Xiamen, Fujian, China was reported. The genus Rhodobothrium Linton, 1889 was erected for R. pulvinatum from the intestine of Dasyatis kuhli. which was new genus record in China, Dasyatis akajei was also a new record of host. 46 of Dasyatis akajei were examined, 2 of which were infected with cestode, the infective rate was 4. 3%, the infective intensity of the cestode was 5-7, the description of the worm is provided in the present paper.厦门大学校级自选课题资助(2002

Community of benthic macrofauna on sandy intertidal zone in Chinese Horseshoe Crab Reserve in Pingtan island,China

2015年7月底,在平潭岛中国鲎(Tachypleus; tridentatus)保护区沙质潮间带进行了大型底栖动物调查。结果表明,在山岐澳和坛南湾沙质潮间带未发现鲎的幼体和成体,证实中国鲎在山岐澳和坛; 南湾已经面临濒危的境况。山岐澳潮间带的大型底栖动物物种数、物种多样性指数(H')、均匀度指数(J)和丰度指数(d)均高于坛南湾潮间带的大型底栖动; 物物种数、物种多样性指数、均匀度指数和丰度指数,而山岐澳潮间带的大型底栖动物栖息密度和生物量低于坛南湾潮间带的大型底栖动物栖息密度和生物量。两个; 海湾大型底栖动物群落的差异与肋(虫昌)螺(Umbonium; costatum)分布有关,坛南湾潮间带栖息着高密度的肋虫昌螺,而在山岐澳潮间带肋(虫昌)螺很少。AZTI's海洋生物指数(AMBI)和多变量海; 洋底栖生物指数(M-AMBI)值证实山歧澳和坛南湾沙质潮间带生态环境均属于受轻度扰动状态。山岐澳主要受海水养殖的影响,吊养的生物和浮筒减缓了水动; 力,导致山岐澳潮间带低洼区表层为泥质沉积物。坛南湾是旅游区,潮间带受人为踩踏较多。At the end of July 2015 , the benthic macrofauna were investigated in; sandy intertidal zone in Chinese Horseshoe Crab Reserve in Pingtan; island. The results showed that both the larvae and adult of Chinese; horseshoe crab were not found in sandy intertidal zone in Shanqi bay and; Tannan bay. It was confirmed that Tachypleus tridentatus stayed in an; endangered situation in the two bays. The species number, species; diversity index (H'),evenness index (J) and a-bundance index (d) of; benthic macrofauna in Shanqi bay were all higher than those in Tannan; bay,while the density and biomass of benthic macrofauna in the; intertidal zone of Shanqi bay were lower than those in Tannan bay. The; difference of benthic macrofaunal community between Shanqi bay and; Tannan bay was related to the distribution of Umbonium costatum . The; density of Umbonium costatum was high in Tannan bay,but it was few in; Shanqi bay. The values of AZTI' s Marine Biotic Index ( AMBI) and; Multivariate Marine Benthic Index (M-AMBI) showed that the ecological; and environmental status both in Shanqi bay and Tannan bay were slightly; disturbed. The mariculture was the key factor in Shanqi bay,because the; suspending aquatic organisms and floats retarded hydrodynamic force led; to muddy sediment in lower intertidal zone in Shanqi bay. Tannan bay is; a tourism region, where has more artificial tread than Shanqi bay.海洋公益项目; 国家自然科学基金面上项目; 厦门大学2015年大创资助项