987 resultados para Krasicki, Ignacy, 1735-1801


Relevância:

10.00% 10.00%

Publicador:

Resumo:

Catch length-frequency data of Otolithes ruber (Schneider, 1801) obtained from the "Projecto de Pesca Experimental da RDA" on Sofala Bank, Mozambique, in 1987 were used to estimate growth parameters, mortalities and exploitation rates. The yield-and biomass-per-recruit analyses based thereon suggest that the stock is overfished.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

本发明提供一种治疗艾滋病的药物组合物,其中含有治疗艾滋病有效量的式(I)化合物联苯环辛二烯类木脂素(+)-戈米辛 K3[(+)-gomisin K3]及可药用载体和/或赋形剂。该药物组合物通过抑制逆转录酶和蛋白酶活性的作用机制,从而达到抑制HIV-1病毒的增殖。本发明同时给出了该药物组合物的制备方法,及其在制备逆转录酶抑制剂药物和在制备抗艾滋病药物中的应用。

Relevância:

10.00% 10.00%

Publicador:

Resumo:

一种强迫观念与行为障碍的小鼠模型建立方法及测试装置,属医学生物学研究领域。本发明采用昆明品系小鼠,皮下注射多巴胺D2受体激动剂昆布诺(Quinpirole),剂量为0.5mg/kg,每周注射两次,连续注射5周,每次注射该剂40分钟后将小鼠置于测试装置上待测。测试装置由置于木架1上的镜子2和玻璃平台3、摄象机4、与摄象机4连接的录象机5、与录象机5连接的计算机6组成。具有结构简单易制作,操作简便,成本低,实验所用小鼠廉价易饲养,实验周期短等优点。

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Lifetimes of excited states in 128Ce were measured using the recoil distance Doppler-shift (RDDS) and the Doppler-shift attenuation (DSAM) methods. The experiments were performed at the Wright Nuclear Structure Laboratory of Yale University. Excited states of 128Ce were populated in the 100Mo(32Si,4n) reaction at 120 MeV and the nuclear γ decay was measured with an array of eight Clover detectors positioned at forward and backward angles. The deduced yrast transition strengths together with the energies of the levels within the ground-state (gs) band of 128Ce are in agreement with the predicted values for the X(5) critical point symmetry. Thus, we suggest 128Ce as a benchmark X(5) nucleus in the mass A ≈ 130 region. © World Scientific Publishing Company.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

We demonstrate a stretched contact-printing technique to assemble one-dimensional nanostructures with controlled density and orientation. Over 90% nanowires are highly aligned along the primary stretching direction. Specifically, The hybrid inorganic-organic TFTs based on a parallel-aligned nanowire network and a semiconducting polymer reveal a significant positive enhancement in transistor performance and air-stability.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

Cathepsin B is a lysosomal cysteine protease of the papain-like enzyme family with multiple biological functions. In this study, Paralichthys olivaceus cathepsin B (PoCatB) cDNA was isolated from flounder embryonic cells (FEC) treated with UV-inactivated grass carp hemorrhage virus (GCHV) and subsequently identified as a vitally induced gene. The full length cDNA of PoCatB is 1801 bp encoding 330-amino acids. The deduced protein has high homology to all known cathepsin B proteins, containing an N-terminal signal peptide, cysteine protease active sites, the occluding loop segment and a glycosylation site, all of which are conserved in the cathepsin B family. PoCatB transcription of FEC cells could be induced by turbot (Scophthalmus maximus) rhabdovirus (SMRV), UV-inactivated SMRV, UV-inactivated GCHV, poly I:C or lipopolysaccharide (LPS), and SMRV or poly I:C was revealed to be most effective among the five inducers. In normal flounder, PoCatB mRNA was detectable in all examined tissues. Moreover, SMRV infection could result in significant upregulation of PoCatB mRNA, predominantly in spleen, head kidney, posterior kidney, intestine, gill and muscle with 18.2,10.9, 24.7,12, 31.5 and 18 fold increases at 72 h post-infection respectively. These results provided the first evidence for the transcriptional induction of cathepsin B in fish by virus and LPS, indicating existence of a novel function in viral defense. (C) 2008 Elsevier Ltd. All rights reserved.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

We report a LD side-pumped fundamental-mode (Mx(2) = 1.35 and My(2) = 1.27) passive Q-switched and mode-locked Nd:YAG laser based on a semiconductor saturable absorber mirror (SESAM). At a pump current of 12.5 A, the average output power of 5.68 W with 80 kHz repetition rate and 2 mu s pulse width of the Q-switched envelope was generated. The repetition rate of the mode-locked pulse within the Q-switched envelope of 88 MHz was achieved.

Relevância:

10.00% 10.00%

Publicador:

Resumo:

智能玻璃能够根据人的意愿或者外界环境的变化动态的调节太阳光的输入,是新一代的建筑节能玻璃,目前引起广泛的关注。本文选取了两种典型的智能玻璃——电致变色玻璃和VO2热色玻璃,采用动态能耗分析软件EnergyPlus分别对其建筑节能特性进行了分析,具体研究内容如下: (1)讨论了电致变色玻璃不同控制方式对其节能效果的影响。结果表明,电致变色玻璃选用合适的控制方式可以显著降低建筑的能耗,但如果控制方式选用不当,采用电致变色玻璃后建筑的能耗反而会高于采用普通白玻的能耗。此外,无论在何种控制方式下,采用电致变色/LOW-E的节能效果都要优于电致变色/白玻中空玻璃。 (2)对VO2光学薄膜的膜系结构进行了优化,研究了外观颜色与膜层厚度的关系,设计出的TiO2(135nm)/VO2(50nm)/ITO(45nm)/glass三层膜结构相对于VO2(50nm)/glass的单层膜结构,太阳能调节量提高了从3.7%提高到9.8%,半导体状态时的可见光透过率从33.6%提高到55.5%,金属状态时的可见光透过率从34.0%提高到50.0%,同时半导体与金属状态时的膜面发射率都有很大程度的降低。 (3)研究了VO2热色玻璃的热学性能和建筑节能特性,重点分析了膜层结构、膜面位置、建筑的地理位置等因素对VO2热色玻璃建筑节能效果的影响。结果表明,对于单层VO2热色玻璃,其功能膜面朝向室内比朝向室外可以获得更好的节能效果,而对于由VO2热色玻璃与白玻组成的双层玻璃,其功能膜面位于室内玻璃的外侧时VO2很难起到相应的调节作用。另外,与其他类型的玻璃相比,虽然一定膜层结构下VO2热色玻璃在不同地区的建筑能耗低于白玻,但是在全年以采暖为主的严寒地区和全年以空调为主的夏热冬暖地区,VO2热色玻璃的节能效果分别不及高透型和遮阳型LOW-E玻璃。