preliminary analysis of high pressure and cold adaptation mechanisms of Microbacterium sediminis YLB-01

海洋覆盖了地球面积的70%以上,其中深海环境占地球表面积的49%，是地球表面最大的生物栖息场所。深海微生物处于高压力、无光照、贫营养、厌氧、极端低温（pH梯度，温度高的地区，如热液喷口部分）、高度的盐浓度含量、高的金属浓度和其他的特殊极端环境中，鉴于其生态环境的特殊性，决定了深海微生物相比于陆生微生物具有极为特异的代谢途径和生物结构。 在深海中，最典型的环境因素为低温（2-4℃）及高压（平均380大气压）。为生活在这样的极端环境，深海细菌必然发展出与之相应的分子基础，包括各种代谢途径的调节、物质的转运、生物大分子结构的改变和膜结构的改变等等。本文以深海革兰氏阳性菌株Microbacteriu...Oceans cover more than 70% of the Earth's surface, which accounted for 49% of the deep-sea environment of the earth's surface.It is the surface of the Earth's largest habitat sites. Deep-sea microorganisms live at high pressure, low temperature (some areas, such as high-temperature hydrothermal vents), oligotrophic, anaerobic, extreme pH gradient, high salt concentrations, high metal concentration...学位：理学硕士院系专业：生命科学学院_微生物学学号：2162011115237

A Vertebra traction instrument Based on AT89C51

设计了一种以AT89C51为核心的腰椎牵引仪。系统具有牵引力检测、牵引力控制、牵引力及牵引时间显示和超荷报警等功能。系统采用拉式负荷传感器检测牵引力度,用电容运转式异步电机及其配套装置来控制牵引力度。牵引力检测与控制等性能稳定可靠,同时该系统还为用户提供了智能、友好的用户界面。This paper designs a vertebra traction instrument which used AT89C52 as its core.This system has multiple functions such as traction force detection, traction force control,traction force and time display and alam when overload eta.This system employs the pulling force sensors to detect traction force and uses capacitance running asynchronism motor with other parts to control traction force.The performance in traction force detection and control of this system is stable.The system also provides an intelligent and friendly interface

Ki-67与脑膜瘤分级及复发的相关性分析

目的分析Ki-67与脑膜瘤分级及复发的相关性。方法收集2005年1月—2013年5月的172例脑外科脑膜瘤初次手术治疗患者病理标本,采用免疫组化染色检测标本中Ki-67的阳性率,随访患者5年内复发情况,并分析Ki-67与脑膜瘤分级及复发的相关性。结果Ⅰ、Ⅱ、Ⅲ级脑膜瘤患者的Ki-67阳性率分别为(1.70±1.13)%、(4.81±3.63)%和(25.00±8.53)%,Ki-67阳性率逐渐增高,差异有统计学意义(Z=79.474,P <0.05)。随访5年,复发患者32例。复发患者Ki-67阳性率(10.94±12.25)%高于非复发患者(2.30±2.34)%,差异有统计学意义(Z=3.958,P <0.05)。结论 Ki-67与脑膜瘤分级及复发有关,具有重要的临床价值

Histopathological Response of Giant Cell Induced by Root-knot Nematode,Meloidogyne javanica,in Tomato Roots under Potassium Stress

Comparison of histopathological response and quantitative measurement of giant cell(GC)induced by Meloidogyne javanica in tomato root were studied under potassium-deficient(0.2 mmol/L K+)and replete conditions(control,6.0 mmol/L K+).K+-deficient stress did not impede the formation and maintenance of GC.The mean number of GC per feeding site as well as the mean diameter of GC did not differ between the treatments.However,the thickness of cell wall including components resulted from the accumulated polysaccharide and the length of cell-wall ingrowth increased 5-25 d after inoculation in K+-deficient as compared with K+-replete conditions.An increase of cell-wall ingrowth suggested a kind of compensational response to the potassium stress.Comparison of histopathological response and quantitative measurement of giant cell(GC)induced by Meloidogyne javanica in tomato root were studied under potassium-deficient(0.2 mmol/L K+)and replete conditions(control,6.0 mmol/L K+).K+-deficient stress did not impede the formation and maintenance of GC.The mean number of GC per feeding site as well as the mean diameter of GC did not differ between the treatments.However,the thickness of cell wall including components resulted from the accumulated polysaccharide and the length of cell-wall ingrowth increased 5-25 d after inoculation in K+-deficient as compared with K+-replete conditions.An increase of cell-wall ingrowth suggested a kind of compensational response to the potassium stress.This study was supported by grants from the Science and Technology Commission of Shanghai Municipality (06DZ22110

福建沿海侨乡农村篮球运动开展现状与发展对策的研究

通过对福建沿海侨乡农村篮球运动开展现状的调查研究 ,既肯定其成绩又指出不足 ,同时提出一些发展对策 ,为我国广大农村开展篮球运动起到宣传和借鉴意义

Effect of colonial breeding of Chinese Egret(Egretta eulophotes) on the heavy metal accumulation in heronry soil

本研究采用电感耦合等离子质谱(ICP-MS)方法,测定福建漳浦菜屿岛黄嘴白鹭(EgrETTAEulOPHOTES)排泄物的重金属元素(V、Cr、Mn、nI、Cu、zn、Cd、SE、Pb)及半金属元素(AS)的含量,分析比较黄嘴白鹭繁殖之前和繁殖之后的集群营巢地、非营巢地的表层土壤的重金属元素及半金属元素含量的变化。结果显示:在本次测定的所有排泄物和土壤样本中均未检出元素SE和Cd;非营巢地土壤中各元素的含量在繁殖前后都没有显著差异(P>0.05),营巢地土壤中的zn和Pb元素的含量在繁殖前后有极显著差异(P 0.05),but the differences in concentrations of Zn and Pb in the nesting soil were highly significant before and after breeding(p < 0.01).A comparison of the concentrations of the elements in the nesting and non-nesting soils also reveals that before breeding,the concentration of Zn in these two soils were significantly different(p < 0.01).After breeding,concentrations of Cu,Zn,As and Pb in the nesting and non-nesting soil were significantly different(p < 0.01) while V and Ni concentrations showed merely significant differences(p < 0.05).These findings indicate that the colonial breeding activities of E.eulophotes play an important role in the transfer of heavy metals between wetland and island eco-systems and that such activities may,over time,result in heavy metal contamination of the heronry soil on the island.supportedbytheNationalNaturalScienceFoundationofChina(GrantNos.40876077;30970380);theFujianNaturalScienceFoundationofChina(2008S0007;2009J01195

我国中小体育用品生产企业产业集群集聚研究——以福建晋江运动鞋产业集群为实证

入世后,我国中小体育用品业面临着国外知名品牌企业的竞争威胁,引起了我国业内人士的高度重视;产业集聚战略已成为提升区域竞争力的重要措施之一。以晋江运动鞋行业为例证,分析了我国中小体育用品生产企业产业集群集聚竞争优势和形成条件

光声/超声双模态成像技术在生物医学中的新进展

随着激光技术、计算机技术与图像处理分析技术的飞速发展,单一模态的医学影像技术正向一体化、多模态及跨尺度影像技术进行革命性转变。多模态影像技术不仅可以实现对同一生物体进行多角度、多参数及分子层面的结构与功能综合特征信息的提取,而且可以弥补单一模式存在的局限性与不足,从而提高疾病早期检测的准确性,为患者提供更加经济合理、精准有效的诊疗方案,对提高人们的生活质量具有非常重要的临床意义。本文重点阐述目前光声/超声双模态成像技术在生物医学以及脑相关疾病中的应用及新进展,系统讨论了该双模态融合技术在未来生物医学领域中的发展前景。国家自然科学青年基金(81701743);;厦门市产学研科技合作项目(3502Z20183018