查询词典 positive cone

Secondly, by linearizing the system at the unique positive equilibrium solution and analyzing the associated characteristic equation, it is found that the positive equilibrium solution is asymptotically stable when the delay equals to zero and when it is increased to certain critical value, the positive equilibrium solution will loss the stability and a spatially heterohomogeneous periodic solution will bifurcate from this positive equilibrium solution.

通过在系统唯一的正平衡解处线性化系统和分析相应的特征方程，发现在时滞等于零时该正平衡解是渐近稳定的，当时滞逐渐增大到某个临界值时该正平衡解将失去稳定性而且在该平衡解处分支出空间非齐次的周期解。

1Niche construction can lead to stable coexistence of diverse genotypes in spatially structured population, which supports a stable polymorphism even without heterozygote superiority.(2)With habitat deterioration, niche construction accelerates the formation of steady polymorphism and hence impedes the harmful influences of environment on the population, which might embody a life-history strategy of organism under the unfavorable environment.(3)Niche construction results in the coexistence with alternative polymorphism through genotype-environment feedback and limited gene flow.(4)The niche-constructing organism is an active force to alter its environment and hence the direction of natural selection in order to better survival.(5)Spatial dynamics and distribution pattern of metapopulation are profoundly influenced by time-lagged niche construction.(6)Metapopulation size can reach a fixed level in the recency effect and equal weighting of time lag but is statistical stability in primacy effect, which implies the primacy effect is most remarkable.(7)The increment in the relative weightingof each generation\' niche construction and the length of time lag are significant factors for system destabilization.(8)Moderate capacity of positive niche construction benefits the metapopulation persistence.(9)The narrowing of niche breadth can decrease the metapopulation size and thereby increase the extinction risk.(10)The coupled function of time lag and niche construction make the system oscillation and generate the spiral wave, spiral-broken and circular wave in heterogeneous habitat.The spatial distributions of metapopulation and resource content are complementary due to a phase lag of their both frequencies.(12)Metapopulation persistence with niche construction depends not only on the balance between colonization and extinction, but also on the balance between the ability of niche construction and natural dissipation of habitat.(13)Metapopula-tion can survive under certain condition when the percent of suitable patches in habitat is lower than the ration of extinction to colonization.(14)Two thresholds exist in the process of transition of habitat quality dynamics from unsuitable to suitable, which include the intensity of niche construction and the initial condition of system.(15)Metapopulation size is positive correlated with the ability of positive niche construction, which means that organism or population who has strongly positive influences on their environment plays an important role to maintain the available habitat.

通过上述几个方面的研究，主要得出以下15条结论：(1)生态位构建可使空间结构种群，甚至是在没有杂合子优势的条件下，形成多种可能的稳定基因型分布模式；(2)随着环境的破坏与恶化，种群的生态位构建作用加速其较早形成稳定多态以阻碍环境对种群的不利影响，解释了有机体在不利环境下的一种生活史对策；(3)生态位构建作用通过基因型—环境反馈机制及有限的基因交流导致基因型多态的稳定共存；(4)有机体的生态位构建作用是一种积极的动力改变环境进而改变其自然选择的方向；(5)生态位构建的时滞作用对集合种群动态和空间分布产生深刻影响；(6)集合种群大小在时滞的崭新效应和等权重效应下达到一固定值，而在首位效应下达到统计稳定，表明首位效应的影响最显著；(7)首位效应下生态位构建相对权重的增量和时滞的长度是影响系统不稳定性动态的关键因素；(8)适中的生态位构建强度有利于集合种群的续存；(9)生态位宽度变窄会减少集合种群的数量从而增加其灭绝风险；(10)时滞和生态位构建的双重作用使系统产生周期振荡，并在异质性环境中产生稳定的螺旋波，破碎的螺旋波和环形波三种分布模式；(11)集合种群与资源含量的空间分布因为相滞而互补；(12)具有生态位构建的集合种群续存不仅取决于侵占率与灭绝率之间的平衡，而且依赖于生态位构建能力同其生境的自然消耗速率之间的妥协；(13)当生境中适合侵占的斑块比例小于其侵占率与灭绝率之比时，生态位构建作用促使集合种群在一定条件下续存：(14)生境斑块的状态从不适合到适合转变过程中存在生态位构建强度和系统初始条件这两个阈值；(15)集合种群的大小同正生态位构建能力正相关，意味着对环境具有较强正作用的有机体对维持有效生境起积极作用。

Results Among 70 strains of Staphylococcus spp., 56 strains were positive Staphylococcus coagulase gene with PCR; the same 56 strains were also positive with latex agglutination test; 54 of which were positive with tube test method, 2 strains were false negative; strong positive were detected with slide method, all these 56 strains were identified as Staphylococcus aureus by VITEK-Ⅱ automatic analyzer.

结果 70株葡萄球菌属细菌中，PCR法检测葡萄球菌凝固酶基因56株为阳性；Slidex Staph Plus与PCR法相对应的56株为阳性；试管法检测与前2种方法相对应的54株为阳性，2株为假阴性；玻片法为强阳性；VITEK-Ⅱ全自动分析仪鉴定56株为金黄色葡萄球菌

These three groups show the lowest willingness to pay for the fee of increasing the government's tax revenue. The groups of mass consumption and positive concernment show the highest willingness to pay fee for the use of education in ecological. The group of protecting environment shows the highest willingness to pay for the fee of interpreter's salary. The groups of protecting environment and positive concernment show the difference between the fees of ecological preservation. The groups of mass consumption and positive concernment show the difference fees of ecological education. The group of positive concernment shows the highest willingness to pay fee to the use of interpreter's salary, ecological preservation, increasing governments' tax revenue, and the use about ecological education.

研究结果发现此三集群游客均对於支付解服务费用作为增加政府税收之愿付价格为最低；「大众消费」及「热衷投入」集群均对於支付费用作为生态保育经费之愿付价格最高，「保护环境」集群则对於支付费用作为解员薪资之愿付价格最高；「保护环境」和「热衷投入」集群对於支付费用作为生态保育经费有显著性差；「大众消费」和「热衷投入」集群对於支付费用作为生态教育费用亦有显著性的差；「热衷投入」集群对於支付解服务费用作为解员之薪资、生态保育经费、政府税收和教育经费的愿付价格均是三集群中最高。

Some SPR-LI neurons were also positive for TH. After administration of vasopressin, SPR-LI structures became denser, especially at levels of pyramidal decussation and area postrema . The dendrites of motor dorsal nucleus of X in the dorsal part of MVZ appeared thin and straight in morphology instead of curl and thick outlooks. These results implicate that some SPR-LI neurons might receive or regulate the cardiovascular stress information induced by vasopressin.③In PHA-L/FOS/TH triple-labeled experiments, seven kinds of immunohistochemical structures were found in MVZ. They were FOS-LI neurons, TH-LI neurons, PHA-L positive fibers, PHA-L positive fibers terminated on FOS-LI or TH-LI neurons, FOS/TH doublelabeled neurons, PHA-L positive fibers terminated on FOS/TH double-labeled neurons.

在锥体交叉和最后区水平，SPR免疫反应阳性结构较正常组明显增强；背内侧部迷走神经运动背核的SPR纤维也由弯曲的粗纤维变为细的直纤维，30％的SPR阳性神经元为SPR/FOS双标记神经元，提示这些神经元参与感受心血管伤害性刺激信息，继而参与心血管活动信息的中枢传导或整合；③三重标记研究结果显示，在MVZ可见到七种免疫反应阳性结构，即PHA-L，FOS，TH，FOS/TH，PHA-L/FOS，PHA-L/TH，PHA-L/FOS/TH。

HP positive groups was compared with HP negative groups in gastric mucosal lesions, expression of P16 in HP positive groups was lower than that in HP negative (P＜0.01), expression of CD44V6, PCNA and C-met in HP positive groups were all higher than those in negative groups (P＜0.01). Expression of P16 was negative correlated with expression of CD44V6, PCNA and C-met in HP-infected gastric mucosal lesions (r〓=-0.6971, P＜0.01; r〓=-0.4811, P＜0.01; r〓=-0.6075, P＜0.01); Expression of CD44V6 were positive correlated with expression of C-met and PCNA (r〓=0.6550, P＜0.01; r〓=0.4977, P＜0.01). Selenium level in HP-infected gastric mucosal was Significantly higher than normal and the level will fall with deteriorism of gastric mucosal lesions.

临床标本研究结果表明：在系列胃粘膜病变中，P16表达HP阳性标本显著低于HP阴性标本（P＜0.01）；CD44V6、C-met、PCNA表达HP阳性标本均显著高于阴性标本（P＜0.01）；在HP感染的胃粘膜病变组织中，P16表达与CD44V6、C-met、PCNA表达均呈负相关（r〓=-0.697l，P＜0.01；r〓=-0.4811，P＜0.01；r〓=-0.6075，P＜0.01）；CD44V6表达与C-met、PCNA表达相互呈正相关（r〓=0.6550，P＜0.01；r〓=0.4977，P＜0.01）；HP感染的胃粘膜病变组织硒含量明显升高，并随胃粘膜病变程度加重相对降低，但高于正常组织；硒含量分别与CD44V6、C-met、PCNA表达阳性率呈负相关（P＜0.05），而与P16表达阳性率呈正相关（P＜0.05）。

There are positive charge and negative charge, but the energy density of electric field is all positive, as a result, the integral electromagnetic energy is always positive, electromagnetic mass is always a positive value.

电荷分为正负，但电场的能量密度却总是正的，所以积分得到的电磁能量总是正的，因而电磁质量也总是一个正值。

Results The megakaryocyte and platelet of 112 cases hemopathy marrow smear with acetal phospholipids staining were all positive, the plasmas cell in anaemia were positive, the erythroblast of aplastic anemia positive, the lipocyte in thrombocytopenic purpura positive, and the other cells all negative.

结果］112例血液病骨髓涂片缩醛磷脂染色中的巨核细胞和血小板均为阳性，贫血中的浆细胞为阳性，再生障碍性贫血中的幼红细胞为阳性，血小板减少性紫癜中的脂肪细胞为阳性，其余各种细胞均呈阴性反应。

Were done and no positive reaction was found.5. The DNA of the young leaves of 132 Bt transgenic plants was extracted to do PCR Five positive inversion plants were obtained and the inversion rate was 3.8%.6. The DNA of fire positive inversion plants obtained in Dl generation was extracted and tested. Two stable positive inversion plants were obtained in D2 generations.7 The way of flourescent mirror flat was used to observe the pollen tube extension circumstance in the flower post after self-pollination.

检测了132株，没有发现阳性反应。5、对转入Bt基因的132株植株的幼叶提DNA，作PCR检测。D1代获得5株阳性转化植株，分别是90035的4株，85—593的1株，转化率为3.8％。6、将D1代获得5株阳性转化植株的种子在温箱中发芽，提取DNA检测，得到D2代稳定遗传的阳性转化植株2株。7、应用荧光镜制片法观察大豆自花授粉后花粉管在花柱中延伸情况。

With Mab 2A3, the first positive cells were detected at the limb bud stage of the embryos. Distinguishable positive haemocytes with a diameter of about 7μm appeared in embryonic-nauplius. At the following nauplius I stage, configuration of haemocytes became more integrated and clear. Their diameters were almost similar to those of haemocytes from adult shrimp. With Mab 1H11, the first positive granular haemocytes were identified at the stage of embryonic-nauplius which existed in clusters with positive punctate fluorescence of granules distributed around the periphery of granular haemocytes.

通过对包括囊胚期、原肠胚期、肢芽期、膜内无节幼体期和无节幼体Ⅰ期在内的中国对虾胚胎的间接免疫荧光检测，最早在肢芽期胚胎中检测到2A3阳性信号；在膜内无节幼体期，2A3阳性血细胞平均直径约7μm，聚集成簇；在无节幼体Ⅰ期，血细胞形态更加完整清晰，平均直径已与成体对虾血细胞相似。1H11阳性大颗粒细胞最早在膜内无节幼体期胚胎中出现，这些细胞同样成簇存在，在其细胞质外围可见点状荧光。

Putt your way through 36 fun-filled holes of minigolf on 3D designed courses with elevated greens, bunkers, bridges and water hazards, among other crazy obstacles.

您的推杆方式，通过36个有趣的填孔迷你的三维设计的课程，以提升绿党，掩体，桥梁和水的危害，除其他疯狂的障碍。

Some participles can be used either as attributes or as predicatives.

有些分词既可当定语用，也可当表语用。