In this thesis, the advantages and disadvantages of the current prevalent congestion control algorithms are discussed in detail. Based on some general AQM algorithms such as RED, REM, RED/ ECN and RED/ BECN, an improved congestion control scheme is proposed.

Backward ECN ( BECN) suggests a congested router to directly return the congestion information to the sender through ICMP source quench ( ISQ) messages to reduce the reaction time to congestion.

其中，后向显式拥塞指示（BECN）建议拥塞的路由器直接把拥塞信息通过ISQ返回给发送端，以减少对拥塞的反应时间。

Backwards Explicit Congestion Notification ( BECN) Rm-cell may be generated by the network or the destination.

后向明确拥塞通知（BECN）源管理（RM）信元可以由网络或目的设备生成。

The characteristic relations has becn developed and it is very suitable to use the Courant difference method with the guarantee condition of convergence.

经特征变换后，采用收敛和稳定性均有保证的Courant差分格式进行数值计算，克服了对称差分格式在处理线路边界条件时的困难。

This study aimed to recognize the clinical characteristics and electroencephalographic features of BECT.

目的探讨儿童良性癫疒间伴中央颞区棘波（BECT）的临床表现和脑电图变化的特点。

Methods To analyze clinical and electroencephalographic data of36 BECT patients.

方法分析36例BECT患者的临床及脑电图资料。

Analysis of Engine Connecting rod's Reliability for BECT 110 Motorcycle

BECT110型摩托车发动机连杆可靠性分析

Clinical Analysis and Curative Efficacy Observation of 30 BECT Cases

30例BECT的临床分析及疗效观察

Background and objective Benign familial neonatal convulsions ( BFNC) is a rare autosomal dominant inherited epileptic syndrome, characterized by unprovoked convulsions.

背景和目的良性家族性新生儿惊厥（Benign Familial Neonatal Convulsions，BFNC）是一种罕见的原发性癫痫综合征，呈常染色体显性遗传，患病率约为1／10万。

Objective To diagnose a Chinese benign familial neonatal convulsions ( BFNC) family at the level of gene and investigate its molecular pathogenesis.

目的对一个中国良性家族性新生儿惊厥（Benign Familial Neonatal Convulsions，BFNC）家系进行基因诊断，并探讨其分子发病机理。

Objective To explore the clinical and genetic characteristics of benign familial neonatal convulsion ( BFNC).

目的探讨良性家族性新生儿惊厥（BFNC）的临床特征及遗传学特点。

With the consideration of all the reactions involved in the polyesterification of BHET ( bis-β-hydroxyethyl terepliathalate) such as the primary forward polycondensation reaction, its reverse reaction and the cracking reaction, a kinetic equation was derived.

考虑了对苯二甲酸乙二酯（BHET）缩聚过程的主反应、逆反应及热裂解反应，得到一个动力学方程式。

According to the technical requirements of BHET, this paper selects JX-300 DCS control system to make control for its production process, and introduces the functions, the structure of hardware and the design process of software of JX-300 DCS control system.

根据聚酯切片生产的技术要求，选用了JX-300DCS控制系统对其生产过程进行控制。详细地介绍了JX-300DCS控制系统的功能、硬件结构及其软件的设计过程。

The catalytic activity of the composite catalysts was evaluated based on DSC method. The results showed that the catalyst with the amorphous structure exhibited higher activity for BHET polycondensation.

采用DSC方法对所制备的催化剂的活性进行研究，结果表明，具有无定形结构的凹凸棒土复合铝、钛化合物催化剂其活性较高。

The reaction distillation was used for synthesis of polymer monomer BHET. The process was simulated by using ASPEN PLUS.

研究了将反应精馏法用于聚对苯二甲酸乙二醇酯（PET聚酯）生产的直接酯化反应和酯交换反应，并采用过程模拟软件aspen plus模拟了整个反应精馏过程。

The DCS Control of BHET's Production Process

聚酯切片生产过程的微机控制

Discussion on factors influencing BHET production and quality with PTA semi-continuous process

影响PTA半连续生产BHET产质量几个因素的探讨

Brain Heart Infusion broth ( BHIB) was used as the liquid media to observe the growth of H.pylori when different nutrient supplements ( 5% CBS, 10% CBS, 10% SBS and 0.1% P-CD) were added.

液体培养时观察四种添加剂（5%CBS、10%CBS、10%SBS和0.1%β-CD）对H。

BHMT gene in liver, intestine and kidney can be induced too after intraperitoneal injection of betaine.

腹腔注射甜菜碱后，鲈鱼肝、肠和肾三个组织中的BHMT基因的相对表达量有显著的增加。

Study on bacteriostasis of the medicinal plant BHMT

药用植物BHMT抑菌作用的研究

These studies provide a scientific basis for BHMT as a bioengineering drug to treat hyperhomocysteinemia.

为rhBHMT作为治疗高同型半胱氨酸血症生物工程药物提供了科学基础。