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昆虫循环系统 1版

昆虫循环系统

1981年

作者：（美）琼斯 j.c. 蒋书楠译

昆虫循环系统.

关键词：昆虫学:生理学生理学:昆虫学

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太阳能

太阳能

comparison of morphological and functional outcomes of mouse sciatic nerve repair with three biodegradable polymer conduits containing poly (lactic acid)

作者： j.c.·麦克维(j.c. Mcveigh)

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Neural Regeneration Research 2018年第10期13卷 1811-1819页

作者： Fernanda Marques Pestana Rui c.c.Domingues júlia Teixeira Oliveira Daniela F.P.A.Durco camila Oliveira Goulart Henrique Rocha Mendonca Anne caroline Rodrigues dos Santos Natália Tavares de campos Beatriz Theodoro da Silva cristina cardoso Pereira cristiano Piacsek Borges Ana Maria Blanco Martinez Pós Graduacao em ciências Morfológicas Instituto de Ciências Biomédicas-UFRJRio de Janeiro RJ Brazil Anatomia Patológica-Faculdade de Medicina-HUcFF-UFRj Rio de Janeiro RJ Brazil Laboratório de Neurodegeneracao e Reparo-Faculdade de Medicina-HUcFF-UFRj Rio de Janeiro RJ Brazil Programa de Eng. Química COPPE-UFRJRio de Janeiro Brazil Polo Universitário de Macaé Laboratório Integrado de Produtos Bioativos e BiociênciasMacaê UFRJ Brazil

Poly（lactic acid）（PLA）-containing nerve guidance conduits（NGcs） are currently being investigated for nerve repair as an alternative to autograft, which leads to permanent functional impairment in the territory innervated by the removed nerve. combination of polymers modifies the physical properties of the conduits, altering their nerve-guidance properties. conduits made from PLA-only or combined with other polymers have been used successfully for nerve repair, but their efficiency has not been compared. We compared the morphological and functional outcomes of peripheral nerve repair by using NGcs made of poly（lactic acid） and combined or not with polycaprolactone（PLA/PcL） or polyvinylpyrrolidone（PLA/PVP）. To assess the functional recovery, we employed a mechanical hyperalgesia analysis, sciatic functional index（SFI）, and electroneuromyography. The mechanical hyperalgesia analysis showed that the PLA group improved more rapidly than the PLA/PVP and PLA/PcL groups; similarly, in the electroneuromyography assay, the PLA group exhibited higher amplitude than the PLA/PcL and PLA/PVP groups. However, the SFI improvement rates did not differ among the groups. Morphologically, the PLA group showed more vascularization, while the nerve fiber regeneration did not differ among the groups. In conclusion, the PLA-only conduits were superior to the other NGcs tested for nerve repair.

关键词： sciatic nerve tubulization biodegradable conduit poly(lactic acid) regeneration

Structure and Luminescence of carboxylic Acid Samarium and Europium complexes

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chinese journal of Structural chemistry 2019年第7期38卷 1182-1187页

作者： WANG Li SHEN Zhi LAN Qing LUO Bao-Min yang Hao ZHAO Qiang college of chemistry and Pharmaceutical Engineering Nanyang Normal University

Two crystals, [Sm（Hcpna）（cpna）·3 H2O]n（1） and [Eu（Hcpna）（cpna）·2 H2O]n（2）,have been synthesized by solvothermal method based on Sm3+ and Eu3+ with multiple acid ligands5-（4-carboxyphenoxy）nicotinic acid（H2cpna）, and the new complexes have been characterized by single-crystal X-ray diffraction, elemental analysis, IR spectroscopy, thermogravimetric analysis and fluorescence analysis. complex 1 exhibits a 1 D chain structure. It crystallizes in the triclinic system, space group P1 with a = 5.9738（11）, b = 12.528（2）, c = 18.021（4） ?, α = 93.156（3）o, β =98.067（3）o, γ = 92.692（3）o, V = 1331.3（4） ?3, Z = 2, S = 1.069, F（000） = 702, R = 0.0277 and wR =0.0688（I > 2σ（I））. complex 2 shows a two-dimensional network structure, which crystallizes in monoclinic system, space group c2/c with a = 13.6733（19）, b = 18.422（3）, c = 10.4307（15） ?, β =93.881（2）o, V= 2621.4（7） ?3, Z = 4, S = 1.110, F（000） = 1372, R = 0.0302 and wR = 0.0811（I >2σ（I））. The solid-state fluorescent test results show tcomplex 1 has weaker fluorescence intensity than the ligand. However, complex 2 has excellent fluorescence properties, and can emit bright red light under the irradiation of ultraviolet lamp.

关键词： crystal structure samarium(Ⅲ) europium(Ⅲ) thermogravimetric analysis fluorescence spectrum

Humid Little Ice Age in arid central Asia documented by Bosten Lake, Xinjiang, china

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Science china Earth Sciences 2006年第12期49卷 1280-1290页

作者： j. A. Holmes EcRc Department of Geography University College London

Short sediment cores retrieved from Bosten Lake, the largest inland freshwater lake in china, were used to explore humidity and precipitation variations in arid central Asia during the past millennium. The chronology of the cores was established using 137cs, 210Pb and AMS 14c dating re- sults. Multi-proxy high-resolution analysis, including pollen ratios of Artemisia and chenopodiaceae (A/c), carbonate content and grain size, indicates that the climate during the past millennium can be divided into three stages: a dry climate between 1000―1500 AD, a humid climate during the Little Ice Age (LIA) (c. 1500―1900 AD), and a warm dry period after 1900 AD. On centennial timescales, the climate change in northwestern china during the past 1000 years is characterized by oscillations between warm-dry and cold-humid climate conditions. All the proxies changed significantly and indi- cate increased precipitation during the LIA, including increased pollen A/c ratios and pollen concen- trations, decreased carbonate content and increased grain size. The humid period during the LIA re- corded by the Bosten Lake sediments is representative of arid central Asia and is supported by nu- merous records from other sites. During the LIA, the water runoff into the Keriya River and Tarim River in the Tarim Basin increased, while the ice accumulation in the Guliya ice core increased. Additionally, the lake levels of the Aral and caspian Sea also rose, while tree-ring analysis indicates that precipita- tion increased. We hypothesize that both the lower temperature within china and the negative anomalies of North Atlantic Oscillation (NAO) during this period may have contributed to the humid climate within this area during LIA.

关键词： multiproxy analyses,Bosten Lake,humid Little Ice Age,past millennium,arid central Asia.

Phylogenetic relationship and morphological evolution in the subfamily Limenitidinae(Lepidoptera:Nymphalidae)

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Progress in Natural Science:Materials International 2008年第11期18卷 1357-1364页

作者： Min Zhang~a yang Zhong~b Tianwen cao~c Yupeng Geng~b Yuan Zhang~b Ke jin~b Zhumei Ren~a Rui Zhang~a Yaping Guo~a Enbo Ma~(a,*) a Research Institute of Applied Biology and college of Life Science and Technology,Shanxi University,Taiyuan,Shanxi 030006,china b School of Life Sciences,Fudan University Shanghai 200433,china c Institute of Plant Protection,Shanxi Academy of Agricultural Science,Taiyuan 030031,china Research Institute of Applied Biology and college of Life Science and Technology Shanxi University Taiyuan Shanxi 030006 China School of Life Sciences Fudan University Shanghai 200433 China Institute of Plant Protection Shanxi Academy of Agricultural Science Taiyuan 030031 China

The mitochondrial cytochrome oxidase subunit I(cOI)gene and the nuclear elongation factor 1α(EF-1α)gene were sequenced from 29 species of Nymphalidae(Nymphalidae,Lepidoptera).Phylogenetic trees were constructed based on the sequences determined from the 29 species and sequences of other 36 species deposited in GenBank using the neighbor-joining(N j),maximum likelihood(ML)and Bayesian methods with Libythea celtis(Libytheinae)as the *** phylogenetic trees indicated four major *** A includes three subfamilies:Apaturinae,Nymphalinae,and Limenitidinae,excluding the tribe Limenitidini;clade B includes the subfam- ilies Heliconiinae and the tribe Limenitidini;clade c includes Satyrinae,calinaginae,charaxinae and Morphinae;and clade D includes subfamily *** study suggested that the tribes Pseudergolini,Biblidini,Limenitidini and cyrestidini should be considered as subfamilies and confirmed the interspecific relationships within the subfamily Pseudergolinae,namely Amnosia +(Pseudergolis +(Stibo- chiona + Dichorragia)).We then mapped three morphological characters(spot of anal angle,eyespots,and process from outer margin of hind wing)onto the phylogenetic tree constructed by ML analysis using the combined sequence *** on this the evolutionary patterns of these morphological characters were identifed,they indicated that the three characters evolved repeatedly in the family Nymphalidae.

关键词： Nymphalidae Limenitidinae Mitochondrial DNA cytochrome oxidase subunitⅠgene(cOI) Nuclear elongation factor 1αgene(EF-1α) Molecular phylogeny character evolution

curcumin encapsulated dual cross linked sodium alginate/montmorillonite polymeric composite beads for controlled drug delivery

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journal of Pharmaceutical Analysis 2021年第2期11卷 191-199页

作者： O.Sreekanth Reddy M.c.S.Subha T.jithendra c.Madhavi K.chowdoji Rao Department of chemistry Sri Krishnadevaraya UniversityAnanthapuramu515003India Department of Polymer Science and Technology Sri Krishnadevaraya UniversityAnanthapuramu515003India

The aim of the present work is fabrication of dual cross linked sodium alginate(SA)/montmorillonite(MMT) microbeads as a potential drug vehicle for extended release of curcumin(cUR). The microbeads were prepared using in situ ion-exchange followed by simple ionotropic gelation technique. The developed beads were characterized by Fourier transform infrared spectroscopy(FTIR), differential scanning calorimetry(DSc), thermogravimetric analysis(TGA), X-ray diffraction(X-RD) and scanning electron microscopy(SEM). The effect of MMT on encapsulation efficiency of cUR and intercalation kinetics was investigated. Dynamic swelling study and in vitro release study were investigated in simulated intestinal fluid(pH 7.4) and simulated gastric fluid(pH 1.2) at 37 ℃. Results suggested that both the swelling and in vitro release studies were influenced by the pH of test media, which might be suitable for intestinal drug delivery. The release mechanism was analyzed by fitting the release data into KorsmeyerPeppas equation.

关键词： curcumin Sodium alginate Montmorillonite Microbeads Drug delivery

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数据库技术入门

数据库技术入门

留守儿童更信任他人吗? 来自实验经济学的证据

作者： c.j.·戴特(c.j. Date)

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南方经济 2020年第4期49卷 29-39页

作者：杨晓兰 c.Bram cadsby 宋菲上海外国语大学国际工商管理学院 200083 浙江大学金融研究院 college of Business and Economics University of Guelph Ted Rogers School of Management Ryerson University

文章采用经典的信任博弈框架,用实验经济学方法比较城市儿童、农村留守儿童和农村非留守儿童的信任行为。实验结果发现,农村留守儿童对他人的信任水平显著高于城市儿童,而农村留守儿童和非留守儿童的信任水平没有显著差异。在控制了性... 详细信息

文章采用经典的信任博弈框架,用实验经济学方法比较城市儿童、农村留守儿童和农村非留守儿童的信任行为。实验结果发现,农村留守儿童对他人的信任水平显著高于城市儿童,而农村留守儿童和非留守儿童的信任水平没有显著差异。在控制了性别、民族、兄弟姐妹数量等人口学特征后,农村身份对儿童的信任水平有显著正向影响,父母双方外出务工、一方外出务工对信任水平均无显著影响。从被信任度来看,三组儿童中,城市儿童被信任度最低,农村留守儿童被信任度最高,但考虑人口学特征后,农村身份、留守身份均不影响被信任度。结合儿童在利他实验中的表现,文章还发现在利他行为中表现为无私型的儿童比平等型和恶意型有更高的信任水平。研究结果表明与同年龄城市儿童相比,农村儿童而不仅是农村留守儿童更信任他人。

关键词：儿童留守儿童信任博弈实验