此外，其他阻止磷酸二酯酶活性的化合物不是兴奋剂。
Moreover, other compounds that block phosphodiesterase's activity are not stimulants.
但Snyder 等人指出，抑制脑内磷酸二酯酶产生所需的咖啡因浓度要比产生刺激的咖啡因浓度高得多。
But Snyder et al point out that the caffeine concentrations needed to inhibit the production of phosphodiesterase in the brain are much higher than those that produce stimulation.
当时只能证明rna可以切割和连接磷酸二酯键。
At that time, it had only been demonstrated that RNA could cleave or ligate phosphodiester bonds.
主要研究了麦芽根中5′—磷酸二酯酶的提取方法。
The methods of 5 '-phosphodiesterase extraction from malt root were studied in this paper.
无加强，超级强韧，黑色聚对苯二甲酸丁二酯树脂注塑。
Unreinforced, Super Tough, black polybutylene terephthalate resin for injection molding.
无加强，低粘度，黑色聚对苯二甲酸丁二酯树脂注塑成型。
Unreinforced, low viscosity, black polybutylene terephthalate resin for injection molding.
无加强，中高粘度聚对苯二甲酸丁二酯树脂的挤出和注塑成型。
Unreinforced, medium high viscosity polybutylene terephthalate resin for extrusion and injection molding.
无加强，核，介质粘度，聚对苯二甲酸丁二酯树脂的快速注塑成型。
Unreinforced, nucleated, medium viscosity polybutylene terephthalate resin for fast injection molding.
遗传物质DNA和RNA是磷酸二酯，磷酸酯基团是连接核酸的桥连基团。
DNA and RNA as the heredity matters, they belong to phosphoric di-ester that is their bridge linkage group.
但是调查发现该公司用棕榈油代替邻苯二甲酸二酯（DEHP），来降低成本。
But the company was found to have substituted palm oil with the Di-phthalate, or DEHP, to cut production costs.
近年来，人类在研究磷酸二酯键水解断裂的化学模拟方面已经取得了很大进展。
In recent years, a great progress has been made in chemical mimic for the hydrolytic cleavage of phosphodiester bond by using bioinorganic methods.
热塑性聚酯树脂是以聚对苯二甲酸丁二酯（PBT）聚化物为主基料的半结晶材料。
Thermoplastic polyester resin is polyethylene terephthalate (PBT) compounds based binder polymer semi-crystalline materials.
产物的结构均经蛇毒磷酸二酯酶部分酶解后的电泳-同系层析双向图谱鉴定得到证明。
The structures of both analogs have been identified using the mobility shift analysis after partial hydrolysis by snake venom phosphodiesterase.
制备了结晶速率快、力学性能优异的玻纤增强聚对苯二甲酸乙二酯（PET/GF）。
A kind of PET/GF composite with good mechanical properties and rapid crystallization rate was prepared.
伐地那非是一种高选择性的新型磷酸二酯酶5抑制剂，是广泛ED人群的一线治疗药物。
Vardenafil, a novel and highly selective phosphodiesterase 5 inhibitor, is the first line therapy for the broad ED population.
采用二阶导数光谱法，试样不需分离，直接测定混合甘油酯中一酯、二酯、三酯的含量。
Use is made of second derivative spectrometry, the quantity is directly determined of the monoesters, diesters and triesters in glyceride, without the samples being separated.
解决好酶价格和甘油二酯的提纯问题，才能实现甘油二酯低成本、高纯度的工业化生产。
Only the settle of enzyme price and purification of diacylglycerol, can the industrial production of diacylglycerol be realized.
采用新型络合催化剂，对聚对苯二甲酸乙二酯(PET)的合成和结晶行为进行了研究。
The synthesis and the crystallization of poly (ethylene terephthalate) (PET) with the novel coordination complex catalysts were investigated.
研究玻纤、阻燃剂和纳米成核剂对聚对苯二甲酸乙二酯(PET)结晶性能及力学性能的影响。
The influence of glass fiber, flame retardant and nucleating agent on the crystallinity and mechanical properties of polyethylene terephthalate (PET) was investigated.
并对制得的二酯基磁性液体饱和磁化强度、密度、粘度、稳定性和粒子直径等性能参数进行表征实验。
The experiments were carried on the synthesized diester-based magnetic fluids to characterize their saturation magnetization, density, viscosity, stability and the diameter of particles.
综述了近年国外对聚对苯二甲酸乙二酯和聚萘二甲酸乙二酯啤酒瓶的开发和应用，讨论了两者的利弊。
The development and use of polyester (such as PET and PEN) beer bottles abroad in recent years are reviewed, and their advantages and disadvantages discussed.
伐地那非是一种新型高选择性磷酸二酯酶5型抑制剂，它对心血管系统的安全性已被多项临床试验所证实。
Vardenafil, as a novel and highly selective phosphodiesterase 5 inhibitor, has been proved by many clinical trials to be quite safe for the cardiovascular system.
甘油二酯是油脂的天然成分，同时也是一种多功能添加剂，在食品、医药、化工等行业有广阔的应用前景。
Diglyceride, as a multifunctional additives, is a nature component of fats and oils, which has been used extensively in food industry, pharmaceutical industry, chemical engineering industry and so on.
研究了染色条件对聚对苯二甲酸丙二酯（PTT）纤维上染率、纤维截面直径、力学性能和回弹性能的影响。
It was studied that the effects of dyeing conditions on the dye-uptake, cross sectional diameter, mechanical properties, and elastic recovery properties of PTT filament.
公司主要关注核苷酸化学，尤其侧重环状核苷酸为基础的各种蛋白激酶、磷酸二酯酶和离子通道等的抑扬调节剂。
The company has its focus on nucleotide chemistry with special emphasis on cyclic nucleotide-based modulators of respective protein kinases, phosphodiesterases and ion channels, etc.
异丁司特作为一种神经胶质激活和环核苷酸磷酸二酯酶抑制剂，已被显示有治疗神经性疼痛和阿片脱瘾的可能性。
Ibudilast, an inhibitor of glial activation and cyclic nucleotide phosphodiesterases, has shown potential in the treatment of neuropathic pain and opioid withdrawal.
考察了硅烷偶联剂KH-550在聚丙烯（PP）/酸式二溴新戊二醇磷酸二酯（PEA）复合体系中的增容作用。
The effect of silane coupling agent KH-550 as a compatibilizer in polypropylene (PP)/phosphate ester dibromoneopentyl glycol acid (PEA) composites was studied.
伐地那非是一种强效、高选择性的5型磷酸二酯酶(PDE5)抑制剂，对PDE5的抑制作用约为西地那非的10倍。
Vardenafil is a potent and highly selective phosphodiesterase type 5 (PDE5) inhibitor with a potency about 10-fold higher than sildenafil.
介绍了世界乙二醇、精对苯二甲酸、 聚对苯二甲酸乙二酯及其纤维、瓶用树脂等聚酯产业链的生产新动向和需求预测。
The article gives an account of the new production trends and demand forecast of the world's PET industry chain in EG, PTA, PET and its fiber and bottle grade resin.
介绍了世界乙二醇、精对苯二甲酸、 聚对苯二甲酸乙二酯及其纤维、瓶用树脂等聚酯产业链的生产新动向和需求预测。
The article gives an account of the new production trends and demand forecast of the world's PET industry chain in EG, PTA, PET and its fiber and bottle grade resin.
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