毒物濃度 的英文怎麼說

中文拼音 [dúwùnóngdù]
毒物濃度 英文
toxic concentration
  • 毒 : Ⅰ名詞1 （對生物體有害的性質或物質; 毒物） poison; toxin 2 （毒品） drug; narcotics 3 （姓氏） a s...
  • 物 : 名詞1 （東西） thing; matter; object 2 （指自己以外的人或與己相對的環境） other people; the outsi...
  • 濃 : 形容詞1. （液體或氣體中所含的某種成分多; 稠密） dense; thick; concentrated 2. （程度深） （of degree or extent） great; strong
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 毒物 : toxic; toxicant; poison; poisonous substance
  • 濃度 : potency; thickness; concentration; consistence; strength; consistency; density
  1. Using cd, cu, zn and cr as experimental toxicants and crucian as experimental creature, we employed the environmental biotechniques ( flame atomic absorption spectrophotometry, the method of improved pyrogallol autoxidation and electron microscopy ) to study the acute toxicity and secure concentrations of heavy metals to crucian ; the accumulation and distribution of mixed heavy metals to fingling crucian ; the activities of superoxide dismutase ( sod ) of gill and liver tissues and the hispathological and ultrastructural change of superfine structure of liver and kidney of crucian after cadmium exposure. through which, we intended to fully and systemically study the toxic influence of heavy metals to fish, and preliminarily discuss the influence of heavy metals pollution to the diversified level of fish such as individual, organ, tissue, cell and molecule. thus we tried to provide scientific evidence to establish preventative management measures, avoid and relieve the harm of heavy metals pollution to aquicolous ecosystem in time

    隨后以這幾種重金屬作為實驗毒物，以鯽魚為實驗動物，應用環境生物技術、火焰原子吸收分光光度法、鄰苯三酚自氧化法、透射電鏡等技術研究了重金屬cu 、 zn 、 cd和cr對鯽魚的急性毒性及其安全濃度評價、混合重金屬在鯽魚幼體組織內的積累和分佈、 cd對鯽魚鰓和肝臟中sod活性的影響、 cd對鯽魚肝細胞和腎細胞超微結構的影響等，全面和系統地研究了水環境中重金屬暴露對魚類的毒性影響，初步探討了重金屬污染對魚類的個體? ?器官? ?組織? ?細胞? ?分子等各水平層次的影響，為制定漁業生產上預防性的管理措施提供科學依據，及時避免或減輕重金屬污染對水生生態系統造成的損害。
  2. The sulfide also has toxic effect on u. unicinctus. the time that experimental populations reach 50 % mortality shortens as the sulfide concentration increasing. and the body color changes to dark

    同時硫化物對單環刺?有顯著的毒性作用， ?蟲的半數致死時間隨硫化物濃度的升高而縮短，體色亦逐漸變深。
  3. The main study in this paper included as follows : the content and distribution of heavy metals in sediments and benthic organisms from the sewage stream in guangzhou city ; the acute toxicity and joint toxicity of mercury and selenium to swordtail fish ( xiphophorus helleri ) ; the damage of mercury to the indexes of antioxidant system in the gills and livers in swordtail ( including the measurement of the activities of total antioxidative capacity [ t ~ aoc ], superoxide dismutase [ sod ], glutathione peroxidase [ gsh - px ] and the concentration of malondiald - ehyde [ mda ] ) and the relief effects of selenium on it, as well as the physiological damage of mercury on the tissues, namely : the antagonistic effect of na + - k + ~ atpase activity on the tissues between selenite and mercury, and the ultrastructural damage under the exposure of mercury

    研究內容主要有：廣州市河涌沉積物及底棲生物體內重金屬含量及評價；汞和硒對劍尾魚的急性毒性和聯合毒性及安全濃度的評價；汞對劍尾魚鰓和肝臟中抗氧化系統的毒性，包括對總抗氧化能力、超氧化物歧化酶、谷胱甘肽過氧化物酶活力及丙二醛含量的測定及硒對其保護作用；汞對劍尾魚組織生理毒性即：汞對na ~ + - k ~ + atpase活力的影響及硒的保護作用和汞和對劍尾魚組織超微結構的損傷等。以高氯酸?硝酸消化法和火焰原子吸收分光光度法測定了廣州市河涌沉積物和底棲生物中重金屬含量。
  4. There existed self - poison phenomenon and the ri was up to - 1 during the germination of s. chamaejasme when the concentration of petroleum ether extract was 20 gdw. ml - 1. furthermore, different concentrations of ethanol extract inhibited the germination of lespedeza davurica

    瑞香狼毒的自毒作用明顯，其作用的主要成分是葉乙醇提取物，當濃度為20gdw ? 100ml ~ （ - 1 ）時，完全抑制了瑞香狼毒種子的萌發，化感效應指數達到- 1 。
  5. Exploring the possible mechanisms is an important content of bioinorganic chemistry and ecotoxicology, which has signality in modifying contamination effect to animals. this thesis studies on the chemical speciation of mercury and selenium in dolphin livers, sub - chronic toxic effect of wistar rats of sodium selenite and mercuric chloride and investigates the antagonism mechanism from there aspects : 1. redistribution of mercury in the presence of selenium, 2

    本文以海豚肝臟為對象，研究其積累的高濃度汞硒化合物的化學形態和結構，並結合動物實驗的研究，從汞硒相互作用的總體生物學表現，汞硒在動物體內分佈變化和結合形態的變化以及汞硒化合物的結構等方面探討兩元素毒性拮抗作用機理。
  6. In addition, we designed a test : the midgut was removed from spodoptera exigua larvae and was cut longitudinally into halves, the midgut epithelia were cleaned and digested with dispase ii, the pelleted cells in grace medium with 7 % fbs supplemented with 100units / ml penicillin, 100ug / ml streptomycin were cooled and then suspended in r18 - labelled virus

    實驗結果表明，在幼蟲的病毒接種物中添加合適濃度的熒光增白劑（ 0 . 01g . ml一』 ）不會改變病毒在幼蟲中腸組織中的感染部位，卻可以提高幼蟲對病毒的敏感性，增加了病毒毒力。
  7. Many studies have been carried out on the toxicity of pollutants to aquatic animals, most of them are focused on the information of lethal concentrations, few have concerned the effects of sublethal concentration on the metabolism conditions

    在污染物對於水生生物的毒害作用方面已經進行了大量的研究，但是大多為毒物致死濃度方面的報道，而關于在亞致死濃度時它們對于機體的生理影響卻很少報道。
  8. In this paper two - generation reproduction toxicity of fenvalerate, a - cypermethrin, chlorpyrifos, and triazophos was tested in a 21d period with water flea, daphnia magna, . the toxicity indicator included longevity, body length, days to first brood, days to first pregnancy, number of youth per female, intrinsic rate of natural increase ( r ), and number of broods per female. accordingly, the dose - response relations and relations between the chronic responses and enzyme levels were investigated

    為了確定水蚤體內生化指標與慢性毒害效應之間的關系，特別是在低濃度暴露狀態下生化指標改變的生物學意義，以便能更準確預測早期農藥對水蚤種群的潛在危害，本文以浙江省常用殺蟲劑氰戊菊酯、高效氯氰菊酯、三唑磷和毒死蜱進行了大型蚤（ d . magna ）的急性和慢性毒性試驗（包括子代水蚤的恢復試驗） 。
  9. The appraisal takes the ecology material, the environment material, chemistry material, the toxicology material as the foundation, through the project analysis, the source strong analysis sets a target the pollutant, distinguishes its hazardous nature, the probability, the degree, the scope which the computation risk occurs and so on, the choice appraisal end point, the use appraisal model forecast goal pollutant exposed density, the analysis risk source to the acceptor the harm degree, carries on the risk attribute

    評價以生態資料、環境資料、化學資料、毒理學資料為基礎，通過工程分析、源強分析，確定目標污染物，鑒別其危害性，計算風險發生的概率、程度、范圍等，選擇評價終點，利用評價模型預測目標污染物的暴露濃度，分析風險源對受體的危害程度，進行風險表徵。
  10. One is the accumulation of the solute osmo - protectants, the other is the mechanisms of ion homeostasis including na + extrusion system and na + compartmentation into the vacuolar to reduce the toxic effects of this cation

    一方面增加細胞內可溶性物質，另一方面則通過na ~ +外排或na ~ +區隔化機制來維持胞質內較低的na ~ +濃度，以消除na ~ +的毒害。
  11. This is supported further by pharmacokinetic / pharmacodynamic ( pk / pd ) analyses which suggest, at most, a modest association of drug concentration with viral response in this concentration range

    藥動學/藥效學的分析結果進一步證明了以上觀點，其分析結果表明，在這個濃度范圍內，藥物濃度與病毒反應略有相關性。
  12. Overuse of bleach or using a bleach solution that is too concentrated results in the production of toxic substances that pollute the environment and disturb ecological balance

    過量使用漂白水或使用濃度過高的漂白水，會產生有毒物質污染環境，破壞生態。
  13. And suaeda heteroptera. the radicle growth of all crop seeds was inhibited by two extracts, and when the concentration of ethanol extract exceeded 5gdw. ml - 1, crop seeds germination was claged, too

    瑞香狼毒葉石油醚和乙醇提取物均抑制受試作物種子胚根的生長，乙醇提取物濃度高於5gdw ? 100ml ~ （ - 1 ）時，作物種子的萌發均受到抑制。
  14. ( 5 ) effects on mouse cerebrum cortex of so2 challenge : we found no pathological changes of mouse cerebrum cortex challenged by so2 by he staining and tem observation, in vitro tests of so2 derivatives challenge showed that : ( 1 ) so2 derivatives has significant toxicity on mouse spleen cells, the lc50 of 4h and 24h exposure is 1. 1293 mmol / l and 1. 3777mmol / l respectively

    二氧化硫代謝衍生物體外實驗結果表明: （ l ）二氧化硫代謝衍生物對小鼠脾細胞具有明顯的細胞毒性作用，染毒4小時和24小時細胞的半數存活抑制濃度lcs 。分別為1 . 12932r以mol幾和1 . 37777 ~ ol幾。
  15. Coatings also have a limited ability to control a drug ' s pharmacokinetics ? the rate at which it enters circulation and the time it persists in the body ' s tissues and organs

    藥物如果太快進入血液，使得血中的藥物濃度太高或是藥物停留時間太久，就會造成毒性。
  16. The soil is major natural resources which is indispensable to humanity, also, it is the vital component of environment and the basement of community

    摘要當土壤砷含量達到一定濃度時，會對作物產生一定的毒害作用。
  17. In this paper, kandelia candel ( l. ) druce hypocotyls were cultivated in sand and treated with 15 % seawater for 60 days under laboratory conditions. the influence of increasing concentrations of napthalene and pyrene ( 0, 0. 1, 1 and 10mg / l ) on hypocotyl germination and growth, photosynthesis metabolism, water metabolism and membrane protection system were observed to inquire into the ecophysiological responses of mangrove k. candel to pahs phytotoxicity. moreover, the concentration and distribution of parent polycyclic aromatic hydrocarbons ( pah ' s ) in surface sediment, underground root and leaf residue of mangroves in jiulong river estuary ( fugong, north and south shores of haimen island, baijiao ), neighbouring xiamen western harbour ( dong islet ) and dongzui harbour ( fenglin ) were examined

    在實驗室條件下，分別以0 . 1 、 1和10mg l的萘（ nap ）和芘（ pyr ） 3個梯度濃度組級砂基培養秋茄（ kandeliacandel （ l . ） druce ）幼苗，培養基鹽度15 ，培養期60d ，以不加pahs為對照，分析了nap和pyr對紅樹植物秋茄幼苗的生長、光合代謝、水分代謝以及膜保護系統的影響，探討pahs對紅樹植物秋茄的的生理生態效應及植物性毒害（ phytotoxicity ）的機理。
  18. The resuit indicates : wheil treating siightiy polluted source water of xiang rivet, optimized coagulation will improve the effect of reducing organics remarkably ; gac has good effect in reducing the dbpfp and organics of xiang rivef, but the effect in reducing dbp is more obviously ; the process of " improving gac by optimized coaguiation " can not only has a wonderful result of reduction in dbppp and organics, but also improve the effect of gac evident1y and decreasing the capital cost for a gac facility ; although optimized coagulation increase the quantity of alum dose, but the level of aluminum of treated water will not beyond the standard level ; different processes will have different resu1ts in lessening the amount of organics and dbp, so we should adopt treatment process by considering the requirements of treated watel

    試驗結果表明：在對受到微污染的湘江源水的處理時，強化混凝工藝對于去除有機物具有比較明顯的作用；活性炭吸附技術處理湘江源水時，其對去除水中消毒副產物前體具有明顯的效果，對去除水中有機物效果也很好，但對消毒副產物的去除效果好於對有機物的去除效果；活性炭與強化混凝聯用工藝不僅能更有效地去除水中有機物以及消毒副產物前體，還能增加活性炭的吸附性能，從而減低費用；雖然強化混凝投加了比傳統混凝多的混凝劑，但並不會使出水中鋁離子濃度超標；不同工藝對水中有機物和消毒副產物的去除效果各不相同，應根據出水要求而選擇不同的處理工藝。
  19. 6. the irrigation using polluted water with high organic matter and tn is good for plant growing and environmental improvement, and the clear water for irrigation is not economic

    潔水灌溉是不經濟的，農田對于高濃度有機氮污水有很好的降解和吸收養分的功效，用不含重金屬和有毒物的污水進行灌溉有助改善環境。
  20. The radicle growth of oryza sativa was inhibited totally when the concentration of ethanol extract was or higher than 10gdw. ml - 1. the corrective mortalities of acheta domestica and tenebrio molitor were higher than 50 % when the two extracts concentration exceeded 40gdw. ml - 1, thereinto corrective mortality of t. molitor was 96. 67 % under the effect of 40 and 80gdw. ml - 1

    瑞香狼毒葉石油醚和乙醇提取物的濃度大於40mg ? ml ~ （ - 1 ）時，對家蟋蟀和黃粉蟲毒殺作用的校正死亡率均高於50 ，其中瑞香狼毒葉乙醇提取物濃度為40和80mg ? ml ~ （ - 1 ）時，黃粉蟲的校正死亡率最高，達到96
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