查询词典 positive

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

The results showed that NOS positive neurons were present in the hippocamp us CA1～CA3） in which NOS strong positive neurons were in CA2; NOS medium positive nucleus in the nuclei nervorum non-cranialium (red nucleus、 su bstantia nigra; NOS positive neurons in the nuclei nervorum cranialium (oculomo tor、 accessory oculomotor nucleus, facial nucleus, abducens nucleus); NOS posit ive nucleus in the pons reticular formation; NOS positive nucleus in the raphe n ucleus and in the plexus chorioideus ventriculi quartic and plexus chorioideus v entriculi tertii.

结果显示：海马(CA1～CA3区)NOS为阳性、其中CA2 为强阳性++）；非脑神经核(红核、黑质为中等阳性；而脑神经核(动眼神经核、动眼神经副核、面神经核、展神经核)NOS为阳性；脑桥网状结构为阳性；缝核群为阳性；第三脑室和第四脑室脉络丛为阳性。

aeroallergen specific ige antibody in the serum of 625 patients with allergic rhinitis were positive. total ige in serum was positive in 413 cases, accounting for 66.1%. the positive rate of total ige was less than that of aeroallergen specific ige. the positive rate of aeroallergen specific ige in order were mite mixture (84.32%), cockroach (19.04%), cypress (15.20%), cat-dog epithelia (13.12%), tree mixture (7.20%), ragweed (5.12%), humulus lupulus (1.76%), mugwort (1.76%), mould mixture (1.44%). in the two groups, the positive rate of aeroallergen specific ige in order were similar.

625例变应性鼻炎患者中吸入性变应原特异性ige阳性率依次为尘螨84.32%、蟑螂19.04%、柏树15.20%、动物毛皮屑组合13.12%、树木花粉组合7.20%、矮豚草5.12%，葎草1.76%、蒿草1.76%、霉菌组合1.44%；总ige阳性者413例(66.1%)明显低于特异性ige阳性率；两组中最常见的变应原相似；未成年组屋尘螨的阳性率及敏感程度明显高于成年组(p 0.01)。

Results Among 12 normal conjunctiva, there were 3 weakly positive, 3 positive and 6 negative; while among 15 pterygial specimens, there were 1 negative, 3 weakly positive, 7 positive and 5 strong positive.

结果 12例正常结膜中，6例为阴性，3例VEGF蛋白染色弱阳性，3例为阳性；15例翼状胬肉组织中，1例VEGF蛋白染色阴性，3例为弱阳性，7例为阳性，5例为强阳性。

While the tissue spaces surrounding a few blood vessels wasAl and Fg positive,no Al or Fg positive cells were observed.In antemortem injurygroup,diffuse subarachnoid hemorrhage,cerebral edema,swelling or pyknotic neu-rons could be observed.The axons showed irregular swelling and disconnection at1～3h,marked swelling and disconnection at 6h,and retraction ball at 15h whichwas more remarkable at 24h after injury.The space between myelin sheaths andaxons was increased at 3～6h after injury.Tortuous and wavelike myelin sheathswhich adhered on axons incompletely,or even peeled off could be found from 15hto 24h after injury.Perinuclear lysis of Nissl bodies began at 24h after injury.Thenumber of GFAP positive cells in cerebrum and brain-stem increased significantlyfollowed by decrease,and then increased again,but the time courses of the changesin different areas of brain were not same.Al and Fg positive neural cells,mainlysurrounded blood vessels,with diffuse or peripherally distributed positive matter incytoplasm could be observed at 0.5h after injury.The number of Al or Fg positivecells and the intensity of immunoreaction increased with the time of injury.The areaof SYN positivity in medulla oblongata and pons decreased notably 3～6h afterinjury,then return to normal levels and continued to 24h after injury.

生前损伤组，可见广泛蛛网膜下腔出血，脑组织水肿，神经细胞肿胀，晚期神经元固缩；伤后1～3h见部分神经轴突不规则增粗、断裂，伤后6h断端膨大，伤后15h可见收缩球，至伤后24h更为明显；伤后3～6h可见部分神经髓鞘与轴突之间的间隙增宽，伤后15h髓鞘明显曲折，不完全附着在轴突两侧，甚至剥脱，持续到伤后24h；核周尼氏体减少在伤后24h才开始出现；同一部位的GFAP阳性细胞数目随损伤时间发生改变，先增多（最早在伤后0.5h），达到高峰后减少，其后又有增多趋势，但不同部位的GFAP阳性细胞数目增减的时间过程不尽相同，同时，大脑中的GFAP阳性细胞数目也有改变；伤后0.5h，可在脑干组织中见到Al和Fg阳性神经细胞，主要位于血管周围，阳性物在胞浆中呈弥散性分布，但部分细胞的阳性物仅分布于靠近胞膜的胞浆中而呈环状，随损伤时间延长，阳性细胞数目增多，反应强度增加；伤后3～6h，延髓及桥脑中的SYN阳性物面积减少，其后恢复到正常水平，并持续到伤后24h。

Results The expression of caspase-3 in lichen scleroses(positive rate was 90%) was higher than that in normal vulvar skin(positive rate was 50%) and squamous cell hyperplasia(positive rate was 59%).However,the expression of ki-67 in squamous cell hyperplasia(positive rate was 91%) was higher than that in lichen scleroses(positive rate was 60%).

结果正常外阴皮肤中caspase-3阳性表达率低于硬化苔藓型营养不良中caspase-3阳性表达率(P=0.026)；硬化苔藓型营养不良中caspase-3的阳性表达率高于增生型营养不良中caspase-3阳性表达率(P=0.023)；增生型营养不良中ki-67的阳性表达率高于硬化苔藓型营养不良中ki-67的阳性表达率(P=0.019)。

Results: The distribution of NADPH-d products and Fos positive neurons was partly overlapped in the PBN. The NADPH-d positive neurons adjoined the Fos positive neurons in the dorsal lateral subnuclear and some Fos/NADPH-d double labeled neurons were observed. The Fos positive neurons were intermingled with the NADPH-d positive fiber terminals in the external lateral subnuclear.

结果：PBN内Fos阳性神经元与NADPH-d阳性产物的分布范围部分重叠：在臂旁外侧核背亚核内，Fos阳性神经元与NADPH-d阳性神经元相互邻接，并可见部分Fos/NADPH-d双标神经元；在臂旁外侧核外亚核内，Fos阳性神经元与NADPH-d阳性纤维终末相互混杂分布。

The prewashed samples and postwashed samples were analyzed by seminal fluid assay.RESULTS:(1) The positive rate of semen HBV DNA was 21.05%(12/57) with 4.7810~4copies/ml on average; the positive rate of serum HBV DNA was 81.82%(45/55 with 2.3310~7copies/ml on average. There is positive rank correlation between semen HBV DNA copies and serum HBV DNA copies;(2 There were 7 positive cases in 21 samples before washing, the 6 cases except one were positive after washing;(3) there arepositive rank correlation between viability、round cells、 abnormal morphology and semen HBV DNA copies.

结果：（1）精液HBV DNA阳性检出率为21.05%（12/57例），平均拷贝数为4.7810~4/ml，血清HBV DNA阳性检出率为81.82%（45/55例），平均拷贝数为2.33(10~7/ml，精液与血清HBV DNA拷贝数等级间存在正相关关系；（2）21份用于洗涤的精液标本中，7份精液HBV DNA阳性，阳性率为33.33%（7/21例），洗涤后仍有6份标本阳性；（3）精液常规分析显示精子活力、圆细胞数、精子畸形率与精液中HBV DNA载量之间存在正相关关系。

The most precious possession that ever comes to a man in this world is a womans heart.

在这个世界上，男人最可贵的财产就是一个女人的心。

Some 4 years above company and divisional management experience, 6 year foreign enterprises work experience.

有4年以上的公司及部门管理经验，6年外企工作经验。