Sprayed different concentration ethephon on maize varieties Ping'an 18 (the upright-leaf type) and Sidan 19 (horizontal-leaf type) before tasselling stage to discuss the influence of ethephon on plant height, leaf area, dry matter weight and yield.
在抽雄前对玉米品种平安18和四单19喷施不同浓度的乙烯利，探讨其对株高、叶面积、干物重和产量的影响。
Two dimension mathematical model of the tube reactor for dimethyl ether synthesis from methanol was established The temperature and concentration profiles in axial and radial direction for this tube reactor with change of operating condition were obtained with finite difference method, so as to provide design data for developing largescale plant of synthesizing dimethyl ether from methano
通过对甲醇气相脱水制二甲醚反应特点的研究，提出了使用拟等温管式反应器的概念；并用二维数学模型进行了数学模拟；在该模型上进行了操作条件对催化床温度分布影响的模拟研究，从而提出了该反应器的结构尺寸，为甲醇气相脱水制二甲醚的大型化开发提供了设计依据。
Five kinds of plant oils (soybean oil, arachis oil, maize oil, sunflower seed oil, sesame oil) could all be used as antifoam. Compared with the CK treatment, concentration 4% sunflower seed oil significantly increased the biomass and the AA yield by 124% and 22% respectively.
大豆油、花生油、玉米油、葵花籽油和芝麻油5种植物油均可起到消泡作用，添加浓度4%葵花籽油效果最佳，与对照相比，菌丝生物量和花生四烯酸产量分别提高了124%和22%。
Plant extracts were diluted to three concentration.
提取蕊木、冲天子、膏桐、百日青、紫茎泽兰5种植物材料的提取物，用95%的乙醇浸渍法，将植物提取物稀释成15、1、0倍3个不同的浓度梯度，在室内对甘蓝蚜进行触杀、忌避作用的测定。
The main development in discharge reduction technology and equipments in China were introduced, such as the comprehensive utilization of tailings, the concentration and filter-press of tailings and the circulation utilization of tailings backwater, and discharge reduction path for mineral processing plant are investigated according to cyclic economy.
综述了我国排放尾矿的情况，介绍了目前我国在尾矿的综合利用、尾矿的浓缩与压滤、尾矿回水的循环利用等减排技术及减排设备方面的主要进展，从循环经济角度对选矿厂的减排途径进行了思考，并例举了我国选矿厂在尾矿零排放、尾矿作建筑材料、废水回用、尾矿再选等方面的减排实例，最后对选矿厂减排进行了展望。
The test results of acute toxicity were examined with Pearson's degree of fitting. The results indicated that the silkworm was extremely sensitive to Chlorantraniliprole. The median lethal concentration (LC50) was 4.0905×10^(-3) mg/L and median lethal dose (LD50) was 1.1435×10^(-8) mg/larva for the 3rd instar newly exuviated larvae. No toxicity was observed when normal concentrations of Chlorantraniliprole were used to fumigate the silkworm rearing room. Both irrigation and leaf spraying with 1.25×10^(-4) mg/L Chlorantraniliprole solution showed strong systemic transmission properties in root, leaf and whole plant. The residual toxic period of this insecticide to silkworm was very long. Mulberry leaves sprayed with 1.25×10^(-4) mg/L Chlorantraniliprole solution could still cause 100% mortality of the 3 and 5 instar larvae after 60 d. Furthermore, toxic reaction was very quick. The poisoning symptoms emerged within 1~5 h after feeding on the poisonous leaves. The poisoned larvae experienced such symptoms as stopping ingestion, remaining still, vomiting slightly and body atrophy sequentially, and died ultimately.
食下毒力试验结果经Pearson拟合度检验表明，氯虫苯甲酰胺对3龄起蚕的食下致死中浓度(LC50)为4.0905×10^(-3)mg/L，致死中量(LD50)为1.1435×10^(-8)mg/头；药剂在常规浓度下对家蚕无熏蒸毒性；1.25×10^(-4)mg/L稀释药液对桑树根灌和喷叶处理，表现极强的根部、叶部和全株性内吸传导特性；药液对家蚕的残毒期很长，1.25×10^(-4)mg/L稀释药液田间喷雾桑叶，间隔60 d后采叶饲喂3龄和5龄蚕的死亡率均为100%，且中毒反应极快，添食毒叶后1~5 h出现中毒症状，经停止食桑、静伏、少量吐液、蚕体萎缩等过程后陆续死亡。
In accordance with the characteristics of high salinity and high organic contents of the waste water from a chemical plant, put forward is a new treatment technique based on evaporation and concentration followed by resource recycling.
针对某化工废水高盐分高浓度等特点，提出了一种基于蒸发浓缩资源回收的新颖处理技术。采用减压蒸发浓缩该有机废水，对浓缩液中的NaCl、对甲苯磺酸钠进行回收，回收后的浓缩液进行焚烧处理；蒸发冷凝水再经好氧生化处理达标排放。该技术可有效处理高盐分高浓度有机废水，经济合理，并可实现资源综合利用
Histological study showed that the adventitiousshoots were from parenchyma cells of leaf callus. Effects of phytohormone concentration, dark treatment, position of leaves on apple plant, placement method of leaves in medium onadventitious shoot regeneration of Senshu were studied.
得到苹果品种千秋叶片－→愈伤组织－→不定芽再生的适宜培养条件为：MS基本培养基附加BA2mg／L，NAA0.2mg／L；黑暗诱导5个星期后在同种培养基中转入光照培养（15001x，每天光照15h），培养室温度为25±2℃，组织学观察表明，不定芽起源为愈伤组织薄壁细胞。
objective effects of plant tannins, chebulinic acid and tellimagrandin i on chemically induced hemoglobin synthesis in k562 cells were investigated. methods the hemoglobin synthesis situation was assayed with benzidine staining. erythroid antigens glycophorin a expression on the surface of k562 cells was labeled by direct immunofluorescence using fluorescein isothiocyanate-conjugated anti-gpa antibodies. then flow cytometric analysis was performed to detect gpa expression levels on surface of the cells. results both chebulinic acid and tellimagrandin i could inhibit the hemoglobin synthesis of butyric acid and hemin-treated k562 cells in a concentration-dependant manner. however, the ba-induced k562 cells were more sensitive to two tannins than heroin-induced cells. conclusion chebulinic acid and tellimagrandin i have inhibitory effect on the erythroid differentiation.
目的 研究可水解单宁诃子酸和特里马素i对氯化高铁血红素和丁酸钠诱导k562细胞红系分化的影响。方法四甲基偶氮噻唑蓝法分析诃子酸和特里马素i对k562细胞生长的影响，联苯胺染色法检测血红蛋白合成情况，应用免疫荧光和流式细胞术检测血型糖蛋白a在细胞表面的表达。结果诃子酸和特里马素i在0.04～0.09？mmol／l浓度下均可显著抑制k562细胞的生长增殖。2种单宁化合物(0.002～0.01？mmol／l)可显著抑制丁酸钠诱导的k562细胞血红蛋白合成，2种单宁化合物(0.01～0.05？mmol／l)还可显著抑制氯化高铁血红素诱导的血红蛋白合成，特里马素i(0.01？mmol／l)还抑制丁酸钠诱导的gpa在细胞表面表达。结论诃子酸和特里马素i对红系分化有抑制作用。
In order to study the relationship between biophoton emission of plant leaf and oxidative stress, the leaf of plantis treated with different concentration H2O2 solution.
为了研究植物叶片光子辐射与氧化胁迫的关系，将鹅掌木叶片用不同浓度的H2O2进行了处理，从而形成氧化胁迫。
With the increase of NaCl concentration and prolonging of stress time, the contents of Na in leaves of the untrasgenic plant was more distinct than the transgenic plant, especially under 0.9%NaCl stressed after 40 days, the contents of Na was 2.0-6.2 times compared with the transgenic plant in the same desposition, therefore, the un-transgenic plant died under this concentration in the end.
随着盐浓度的增加和胁迫时间的延长，对照植株叶片中Na 含量极显著地高于转基因植株，特别是在0.9%盐度下胁迫40d，对照植株的Na 含量极高，是该处理下转基因植株的2.0-6.2倍，因此，该浓度下的对照植株最终死亡。
The concentration of carbon dioxide in the air being only 0.03 per cent, carbon is amassed into the compass of the plant from a large volume of air.
因为空气中二氧化碳的密度只有万分之三，所以聚集在植物内部的碳是从周围极大体积的空气中得来的。
The concentration of carbon dioxide in the air being only 0.03 percent; carbon is amassed into the compass of the plant form a large volume of air.
因为空气中二氧化碳的密度只有万分之三，所以聚集在植物内部的碳是从周围极大体积的空气中得来的。
It employs carbon dioxide as carbon source to replace traditional sugar, the concentration is controlled to be 2000- 3000ppm, takes light transmission, ventilating and water- proof fluoroethylene resin film as container, and gets tissue culture sprout and replanting sprout of chrysanthemum, which are characterized by largest plant height, largest leaf number, root number, longest root length and largest dry net weight of haulm and root, high rate of emergence and little pollution rate.
本发明提供了一种无糖培养菊花的方法，采用二氧化碳作为碳源，替代传统的糖，控制释放浓度为2000～3000ppm，采用透光性好、透气不透水的氟乙烯树脂膜为容器，在此种培养条件下，不同品种的菊花组培苗和组培后移栽苗在株高、叶数、根数、最大根长、茎叶部分和根部部分的干鲜重最大，出苗率高，污染率最低。
By imitating different concentration of Cd2+ Cu2+ Cr3+ Cr6+and Zn2+polluted water environment, we mainly studied their toxic effects on aquatic piants by means of measurement of physiologicai indexes and electron microscopy observation as well as the relieving to Cu2+ injury of antioxidase enzyme system in Lemna minor L. and Vallisneria asiatica Miki in this paper by throwing Ce. the experimental results showed that Cd2+ Cu2+ Cr3+ Cr6+ and Zn2+ might injure photosynthetic systems, protective enzyme system, substance metabolism systems and cell ultrastructure of the plant.
本文通过模拟不同浓度梯度的重金属Cd~(2+)、Cu~(2+)、Cr~(3+)、Cr~(6+)和Zn~(2+)污染环境，利用生理生化测定、扫描电镜、透射电镜、气相色谱及激光共聚焦等实验手段，研究了四种金属离子对不同生态型的水生植物的毒害影响，初步探索了Ce对浮萍Cu害的缓解效应和La、Zn及其交互作用对浮萍活性氧清除系统影响。
Adopting MS basic culture medium, adding different kinds and different concentration of the plant hormones, choosing non-pollution seeds of Schisandra sphenanthera Rehd. et Wils, cloing the random testing of tissue culture.
采用MS基本培养基，添加不同种类和不同浓度的植物激素，选择无污染的北五味子种子，进行组织培养随机试验，筛选北五味子诱导分化较适合的培养基。
The results showed that the ratios of regenerated plant were related with the ingredients of regeneration medium, such as hormones, active charcoal and different sugars. The efficiency of transgenic plant and transformation cycle were affected by the bombardment distance, the initiative time of selection, the initiative concentration and concentration gradients of kanamycin in the process of selection.
结果表明，植株再生率与再生培养基的成分，如激素的有无、活性炭的含量和碳源等有关，轰击距离以及筛选程序中卡那霉素的起始筛选时间、筛选浓度和浓度梯度等因素对转化周期和转化率有直接影响。
Qinba Mountains take full advantage of rich natural plant resources, to rely on advanced technology and science-sik management tools, the use of non-toxic solvents, low temperature concentration and other advanced technology, sets crude extract, purification, crystallization in one, thus ensuring the product's stability and reliability.
充分利用秦巴山区丰富的天然植物资源优势，依靠先进的植化技术和科学的管理手段，采用无毒溶剂、低温浓缩等先进工艺，集粗提、纯化、结晶于一体，从而保证了产品的稳定性和可靠性。
The higher the inoculation concentration of the strain is during seed germination, the more quantity the strain in host plant tissues. When strain B504-1121 was inoculated on lower petioles, it could transfer into upper tissues, however it only habitate in leaves if it was inoculated on leaves.
在下部叶片叶柄处接种的菌体可向上移动，通过茎进入上部叶片；在叶部接种的菌，则只在接种叶内定殖，不再向其他部位转移。
Five concentration grads of kanamycin that are 0, 0.1, 1.0, 5.0, 10.0g/L, were setted up in the test of seedling peried, daubing young fold leaves with difierent concentlation of kanamycin when young plant has three euphylla. The result is that when the concentration of kanamycin is 5g/L, untransgenetic young leaves appear big and clear yellow spots.
苗期试验设置了0，0.1，1.0，5.0，10.0g/L5个卡那霉素浓度，在三叶期涂抹花生未展开叶，研究表明，5g/L卡那霉素使非转基因的被涂抹叶全部出现大而明显的黄色斑。