PBN

PBN is the future of current development of civil aviation .

PBN是目前民航发展的趋势。

GNSS is the primary navigation system used in PBN .

GNSS也是PBN运行的主用导航系统。

But the application of new technology requests the PBN be more secure and stable .

但是，新技术的运用，对制播网的安全性、稳定性提出了更高的要求。

Fabrication of PBN Bismuth-Contained Layer Structure Piezoelectric Ceramic by Solid Phase Reaction

固相法制备含铋层状结构PBN压电陶瓷

PBN is mainly based on navigation performance , and enables a safer and more accurate air transportation .

PBN运行基于导航性能，是一种更加精确、安全的航空运行方式。

The implementation of PBN can increase airspace capacity , reduce flight delays and ensure flight safety .

实施PBN技术有助于提高空域容量，减少飞行延误，保证飞行安全。

Also hope that interested person to study general aviation airport flight program designers with a PBN ideas and inspiration .

也希望能为有兴趣研究通用航空机场的PBN飞行程序设计者提供一个思路和启发。

Previous studies suggested that PBN , PAG and NTS had reciprocal relations .

已有的研究表明，臂旁核与中脑导水管周围灰质和孤束核之间都存在相互联系。

Performance Based Navigation ( PBN ) implementation of the airspace structure will be optimized to expand a major route airspace capacity .

性能基导航（PBN）的实施将成为优化空域结构，扩大空域容量的一个主要途径。

323 suggestion is a multimedia meeting system which is based on the packet exchange network ( PBN ) and made by ITU-T.

323建议是由ITU-T制订的基于分组交换网络（PBN）的多媒体会议系统。

The dielectric constants are reduced , while the Tc is enhanced obviously in PBN doped by Li and Na Ions .

掺Li，Na的PBN晶体的介电常数显著降低，而铁电居里点有明显的提高。

These results suggest that AMPA receptors within the CeA may be involved in the descending modulation in the PBN taste neurons .

以上结果表明，杏仁中央核内的AMPA受体可能参与杏仁核对臂旁核味觉神经元的下行调控。

Using PBN as spin trap matter , we studied the feasibility of detect organic peroxides by spin trapping and electron paramagnetic resonance technique .

以PBN为捕获剂，采用自旋捕获与电子顺磁共振技术研究测定有机过氧化物的可行性。

Conclusion : These results suggest that several physiological functions of NO correlate with diversity of the morphology and distribution of NOS positive neurons in the PBN .

结论：实验结果提示，PBN内的NO参与多种生理功能，可能与该核内NOS阳性神经元形态与分布的多样性相关。

To investigate whether the neural nitric oxide synthase ( nNOS ) in the PBN takes part in the transmission of visceral noxious stimulation ;

探讨PBN内神经元型一氧化氮合酶（nNOS）是否参与对内脏伤害性刺激传导过程的调节；

PBN navigation specification describes that , PBN operation method will be optional According to the coverage of navigation facilities in different regions and the different requirments .

根据不同地域的导航设施覆盖情况和运行要求，可选择的PBN运行方式也不同，在PBN导航规范对其进行了说明。

NGN is an open platform which realizes voice services and other value - added services based on data network , especially the IP carrying network of PBN ( IP network ) .

NGN是完全基于数据网络、特别是分组网络（IP网络）的IP承载网来实现语音业务及其他增值业务的开放平台。

Objective : To investigate whether the nitric oxide synthase ( NOS ) in the parabrachial nucleus ( PBN ) took part in the transmission of visceral noxious stimulation .

目的：探讨大鼠臂旁核（PBN）内一氧化氮合酶（NOS）是否参与内脏伤害性刺激的传导过程。

The paper introduces the concept and structure of network management policy , a detailed description of COPS protocol and its comparison with SNMP protocol , and the disadvantages and the developmental trend of PBN .

文章首先介绍基于策略的网管概念及其体系结构，然后对相关协议COPS进行详细介绍，并将它与SNMP协议进行比较，最后指出了PBN的局限性及其发展趋势。

Taste responses in the parabrachial nucleus ( PBN ) are significantly affected by stimulation or lesion of the central nucleus of the amygdala ( CeA ) .

以往的研究表明，电刺激或损毁杏仁中央核明显改变臂旁核味觉神经元的活动。

The principle of GPS and navigation performance are primarily studied , other satellite constellations and augmentation systems are discussed briefly . Finally , the PBN navigation system performance monitoring is discussed in this thesis .

论文重点研究了GPS导航原理和导航性能，简单阐述了其他的卫星星座和增强系统。

The dielectric and pyroelectric properties of three crystals in the system of lead barium niobate ( PBN ) were investigated in the temperature range from 100K to 450K .

在100K～450K范围内，研究了铌酸钡铅（PBN）系统中三种不同组份晶体的介电和热释电性。

According to their preferred stimuli , PbN taste neurons could be classified as NaCl , HCl , quinine and sucrose preferred taste neurons , which were differentially distributed in parabrachial subnuclei .

根椐最适刺激，PbN味觉神经元可分为：氯化钠优势反应、盐酸优势反应、奎宁优势反应和蔗糖优势反应神经元。

AIM : To observe the serotoninergic projections from the periaqueductal gray ( PAG ) and dorsal raphe nucleus ( DR ) to the parabrachial nucleus ( PBN ) in rats .

目的：观察大鼠中脑导水管周围灰质（PAG）和中缝背核（DR）内的5羟色胺（5HT）能神经元是否向臂旁核（PBN）投射。

Desktop video conference system is one of the focuses in internet application in recent years , and the International Telecommunication Union ( ITU ) has been also purposed the Recommendation H.323 for multimedia commu-nications over Packet Based Networks ( PBN ) .

桌面视频会议是近年来网络应用的重点，国际电信联盟（ITU）也为基于分组交换网络（PBN）的多媒体会议系统制定了H.323建议。

Pyrolytic Boron Nitride ( PBN ) is a new inorganic ceramic material developed during 1970s . It can be used to make insulating shield and crucible . This paper describes the use of PBN as a crucible in MBE .

热解氮化硼（PyrolyticBoronNitride，简称PBN）是七十年代发展起来的新型无机陶瓷材料。

In the present study , the direct projections from the NTS to the PAG and indirect projections via the PBN from the NTS to the PAG were investigated using anterograde and retrograde tract tracing method combining immunohistochemical technique .

本实验利用顺行和逆行追踪技术结合免疫组织化学方法对孤束核直接或经臂旁核接替向中脑导水管周围灰质的投射进行了研究。

OBJECTIVE : To investigate the relation between the primary afferent visceral terminals and the NOS - containing neurons which project from the interstitial nucleus of spinal trigeminal tract ( INV ) to the parabrachial nucleus ( PBN ) .

目的：探查三叉神经脊束间质核（interstitialnucleusoftrigeminaltract，INV）内内脏传入终末与向臂旁核（parabrachialnucleus，PBN）投射的NOS阳性神经元之间的联系。

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 .

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；

The purpose of the present study was to investigate if the visceral primary afferents and nociceptive information from orofacial deep tissue converge onto the catecholaminergic neurons projecting to the parabrachial nucleus ( PBN ) in the nucleus of the solitary tract ( NTS ) .

为了研究内脏初级传入与口面部深层组织躯体伤害性信息是否汇聚于孤束核（NTS）中向臂旁核（PBN）投射的儿茶酚胺（CA）能神经元。