荞麦子叶期幼叶过氧化物酶同工酶研究

用聚丙烯酰胺凝胶电泳技术对荞麦属(Fagopyrum Mill)的甜荞(F.esculentum)和苦荞(F.tataricum)共19个不同收集系子叶期幼叶的过氧化物酶同工酶进行了研究.结果发现:过氧化物酶同工酶酶带共10条,其中甜荞有5条带,而苦荞为6条.酶带及聚类分析表明:甜荞和苦荞各收集系内的过氧化物酶同工酶酶...     

枸杞对家兔红细胞膜磷脂成分及电泳率的影响

采用家兔血细胞和血小板，以薄层色谱扫描法和显微（细胞）电泳法探讨枸杞提取物（ＬｃＭｅ）对家兔红细胞膜磷脂成分及电沪率的影响。结果表明：实验组红细胞膜磷脂成分中ＰＣ显增多，而ＳＭ、ＰＥ都程度不同的减少，特别是ＰＳ含量、ＳＭ／ＰＣ、ＰＳ／ＰＣ比值显减小。血小板及红血细胞的电沪率显高于对照组，ＬｃＭｅ对维持细胞膜的稳态有重要作用。     

火电厂球磨机筒内降噪技术的研究

研究了作为火电厂球磨机筒内降噪弹性垫层材料的基本性能及设计原则．通过试验和工业现场运用表明，垫层材料和安装方式是可行和安全的，且有明显的降噪效果．     

菏泽造纸厂生产工艺与技术革新

简要介绍菏泽造纸厂概况,简述其生产工艺流程,分析造纸废液产生的原因和危害,指出技术革新的必要性,提出酶法制浆工艺的新设想。     

影响木立芦荟试管快速繁殖因素的研究

以木立芦荟的试管苗为外植体进行试管快速繁殖的研究 ,结果表明 6 -BA可以极大地提高不定芽的增殖率 ,但同时出现了大量的玻璃化试管苗 ,而且随着继代次数的增加 ,出现了 6 -BA沉积现象 ,玻璃化现象更加严重 ;不定芽的增殖系数还与接种的外植体直径的大小、切割部位等密切相关     

Therapeutic systems and controlled drug delivery

Therapeutic systems can provide pre-programmed, unattended delivery of a drug at a rate, and for a time period, established to meet a specific therapeutic need. The system can be designed to minimize the patient's intervention and to optimize compliance with the prescribed regimen. The ocular therapeutic system described here for the control of intraocular pressure in glaucoma delivers pilocarpine at 20 or 40 μg/h for one week, and fits comfortably into the cul-de-sac of the eye. The intrauterine progesterone contraceptive system described here represents a new approach to steroidal contraception that localizes the effect of the hormone progesterone to the uterus, delivering the hormone at a rate of 65 μg/day for one year. Both of these systems are designed to deliver drug into their immediate locale, and are thus topical dosage forms. The transdermal therapeutic system described here has been designed to deliver scopolamine across intact skin and into systemic blood to achieve an antinausea effect. The pharmacokinetics of scopolamine are such that, to minimize the time required for the onset of drug action, drug should be presented at an initially high rate, i.e. as a priming dose, to attain the therapeutically effective drug level, and then at a constant rate, so as to maintain the therapeutically effective level. This system functions according to the priming dose/maintenance rate design requirement.     

毛细管气相色谱—质谱联用分析民勤小茴香挥发油的化学成分

本文报导用毛细管气相色谱——质谱联用技术分析甘肃民勤小茴香挥发油的化学成分.共分离出21个组分,鉴定共20个组分,其中茴香脑占挥发油总数的76.4%.     

小叶黄杨和夹竹桃对土壤中重金属元素汞的吸收比较

通过冷原子吸收法测定土壤与植物叶片中的汞含量,比较小叶黄杨和夹竹桃对土壤中重金属元素汞的吸收能力,为土壤重金属汞污染的植物修复治理技术提供理论依据。结果表明,小叶黄杨叶片中的汞含量占根部土壤汞含量的比值(8.6%)大于夹竹桃叶片中的汞含量与根部土壤汞含量的比值(2.5%),小叶黄杨对汞的吸收能力强于夹竹桃的。     

盐胁迫对番茄幼苗热值、能量积累及分配的影响

研究了基质盐度(0、80、160、240 mmol/L NaCl)对番茄(Lycopersicon esculentumMill.)幼苗热值和能量积累的影响.结果表明:番茄幼苗干物质和能量积累存在低盐促进和高盐抑制的现象,最大值出现在80 mmol/L NaCl处,干物质为6.39 g,能量积累达92.20 kJ.随基质盐度升高,干物质和能量积累倾向于叶片中.番茄幼苗干质量热值和去灰分热值存在不同的变化规律.随盐度升高,根干质量热值和去灰分热值显著增加,而在茎叶和整个植株中,干质量热值逐渐下降,去灰分热值最大值则出现在80 mmol/L NaCl处.