查询词典 No

NO elimination reactions are much complicated in the system of NO-CO-CO2-N2 with the existence of metallic oxides. Homogeneous reaction between NO and CO, reduction of NO by the lower valued metallic oxides, direct decomposition of NO as a catalytic reaction and catalytic reaction of NO/CO may all contribute in NO elimination.

金属氧化物存在条件下NO-CO-CO2-N2体系中，NO去除反应较为复杂，NO/CO气相直接反应、低价氧化物对NO的还原作用、金属氧化物对NO分解反应的催化作用及金属氧化物对NO/CO反应的催化作用等都可能存在。

Among the more and more intensive researches on NO transfer, a controversial issue regarding the mechanism is whether the NO group transfer from S -nitroso compounds occurs in a direct nucleophilic way where NO serves as the target or in a multi-step sequence initialed by homolysis of the S -NO bond.

NO转移反应的模拟研究日渐活跃。有关S-亚硝基化合物转移NO的机理存在两种争论，即以NO为靶心的直接亲核进攻还是由S-NO键均裂引发的多步过程。

The metalloproteins which are widely distributed in vivo are very important target molecules of NO. A new Y/〓 reaction system which can form Y-NO bond has been established and has been used to measure the NO affinity of metalloporphyrins as metalloprotein models. Three kind of bond energies of the Co-NO bonds in series of cobalt nitrosyl tetraphenylporphyrins have been determined by thermodynamic cycles combined with calorimetric measurements and relevant electrochemical data.

本文以金属卟啉模拟体内重要的NO靶分子金属蛋白，通过确立新的适于量热和电化学测定的Y／〓成Y-NO键反应体系，利用合适的热力学循环，建立了新的适于金属卟啉体系的NO亲合势的测定方法，得到了苯腈中系列亚硝基四苯基钴卟啉Co-NO键的键能，即钴卟啉NO亲合势的定量标度，以表征钴卟啉的NO结合能力。

The nitric oxide released process of nitrosyl metalloporphyrins in vitro was detected with diazotization assay at room temperature, the four nitrosyl metalloporphyrinsbCo-NO、bFe-NO、a_(Co-NO、a_were good nitric oxide donors, the nitric oxide released efficiency is attained about seventy percent.

在室温下采用重氮化反应研究了这些金属卟啉-NO 配合物在水溶液中释放NO的过程，其中四种金属卟啉(bCo-NO、bFe-NO、aCo-NO、aFe-NO)有较好的释放效果，释放率达到近70%。

One of the opinions was to reason that the electron configuration of NO molecule is the same as that of Ol molecule based on the fact that NO is isoelectronic with O2+. In the present paper, we suggest, according to ah initio calculation results in combination with UPS, an ordering of the NO molecule orbital, i. e. 5σ being a weak bonding orbital and lying slightly higher in energy than 1π, corresponding to the case of N2 molecule. The...

本文用NO和O_2~从头计算结果以及NO的紫外光电子能谱相结合的方法说明NO的5σ轨道是弱成键轨道，5σ的轨道能稍高于1π轨道能，也就是说NO的能级次序是与N_2分子相同的；NO与O_2~+虽是等电子体，但是能级次序并不相同，因此由O_2~+的能级次序确定NO分子的电子组态是不妥的。

Methods: NO-3 was restored with cadmium column assay and NO-2 was detected with leavy nitrogen assay. The primitive NO-3 and total restored NO-2(NO-3/NO-2) in plasma of patients with chronic hepatitis and cirrhosis as well as ET-1 with radioimmunology, ALT with Lai's assay were determinated.

取慢性乙型肝炎及活动性肝硬化患者血浆，用镉柱法还原NO-3，重氮法测NO-2，计算血浆中原有及NO-3还原后NO-2总和(NO-2/NO-3)，放免法测ET-1和赖氏法测定ALT。

This conclusion is based on three groups of experiments with detached root tips of wheat seedlings: By following the time course changes of NO synthase , superoxide synthase and ABA accumulation under dehydration stress, we found that ABA accumulation was preceeded by the changes of NOS and superoxide synthase. ABA accumulation induced by dehydtrion stress and osmotic stress can be blocked by NO scanvegers and NOS inhibitors, while only dehydration stress-induced ABA accumulation can be blocked by ROS scanvegers. Exogenous applied NO or ROS induced ABA accumulation in root tips of wheat seedlings, and synergistic effects were found between NO and NO. The in planta expereiments also proved that ROS and NO are involved in water stress-induced ABA accumulation.Ⅱ.

证据主要来自以离体根尖为材料的实验：(1)通过检测干旱胁迫下小麦根尖NOS活性、O〓合成酶活性和ABA积累的时间变化进程，发现ABA积累滞后于ROS和NO的变化；(2)抑制剂实验表明，NO清除剂和NOS抑制剂可以抑制自然干旱胁迫及渗透胁迫诱导的小麦根尖ABA积累，ROS清除剂抑制自然干旱胁迫诱导的ABA积累而不抑制渗透胁迫诱导的小麦根尖ABA积累；(3)在非胁迫条件下施加外源的ROS或NO可以诱导小麦根尖积累ABA，ROS和NO之间具有协同作用。

The specimens were collected from 4 different origins: 1 Smuggled sturgeons (Nos. 1-15); 2 Aquaculture specimens from Chupei station of Freshwater Aquaculture Research Center, including A. schrenckii (Nos.18, 21-24), A. gueldenstaedtii (No.16), A. sinensis (No.17), A. baerii (No.19) and one unknown species sturgeon (No. 20); 3 A. schrenckii (No.25) and A. transmontanus (No.26) from aquaculture pond in Fu-San; and 4 Polyodon spathula (No.27) and unknown species sturgeons (Nos.28-31) from Taipei city Zoo.

研究材料取自四个地点：1海巡署在云林箔子寮港查获的走私鲟(Nos.1-15)，2竹北淡水繁养殖研究中心所饲养的史氏鲟(Nos.18， 21-24)、俄罗斯鲟(No.16)、中华鲟(No.17)、西伯利亚鲟(No.19)、及未知种鲟(No.20)，3福山养鳟场所饲养的史氏鲟(No.25)及高首鲟(No.26)，以及4台北市立动物园所饲养的匙吻鲟(No.27)及未知种鲟(Nos.28-31)。

The approaches taken to prepare NO releasing polymers are classified into three catogories:(1)doping discrete NO nonors within polymer matrix;(2)covalent attachment of NO resealing moieties on the filler particles of the polymer to provide NO releasing properties and then dispersion them into the polymer backbone;(3) covalent linkage of NO donors to polymer molecules.

制备可释放NO聚合物材料的方法主要有3种：（1）通过物理掺杂的方式将小分子的NO供体分散到聚合物材料中；（2）对聚合物材料的填料微粒进行化学改性，得到可释放NO的填料粒子，再将其填充到聚合物材料中；（3）通过共价键将可释放NO的基团连接到聚合物主链及侧链上。

The results implied that NO/ROS-induced ABA accumulation come from de novo synthesis pathway rather than degration of conjugated forms. The protein synthesis inhibitor actidone blocked the NO-induced ABA accumulation while having no effects on ROS-induced ABA accumulation, indicating that the action of NO was gene-expression dependent and that of ROS was gene-expression independent. These results suggested that NO may serve as a stress signal in the regulation of ABA-biosynthesis and ROS may serve as substrate in ABA biosynthesis or be involved in the regulation of enzyme activities.

1ABA合成抑制剂fluridone抑制ROS和NO诱导的ABA积累，表明NO／ROS诱导的ABA积累来源于ABA的从新合成而不是已有结合态ABA的代谢；(2)蛋白质合成抑制剂环己亚胺可以抑制NO诱导的ABA积累而对ROS诱导的ABA积累没有影响，说明NO的作用涉及基因表达而ROS的作用与基因表达无关，暗示NO的作用方式可能是作为一种干旱胁迫信号物质参与ABA合成的调节，而ROS则可能参与了相关酶活性的调节或直接参与了ABA合成的底物反应。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。