毒性度 的英文怎麼說

中文拼音 [dúxìngdù]
毒性度 英文
toxicity rating
  • 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...
  • 性 : Ⅰ名詞1 （性格） nature; character; disposition 2 （性能; 性質） property; quality 3 （性別） sex ...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 毒性 : [藥理學] toxicity; virulence; poisonousness毒性測定 toxicity test
  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. Toxicity of ammonia - n in babylonia areolata at different ph and salinity

    和鹽度下氨氮對方斑東風螺的毒性研究
  3. 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。
  4. Chlorine is not toxic to human beings at the concentrations used for disinfection purposes, and is a quick - acting germicide

    用於消毒目的氯的濃度對人類無毒性，是一種高速殺菌劑。
  5. 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。
  6. From different points of view of the epidemiology, cytogenetics, molecular biology, experimental pathology and preventive medicine, this study revealed and proved that the genotoxicity and carcinogenesis existed in the drinking pond water in the high incidence area of live cancer in guangxi, indicated the feasible preventive and interruptive methods, too

    從分析流行病學，細胞遺傳毒理學、分子生物學、實驗病理學和預防醫學的不同角度，揭示和論證了廣西某肝癌高發區居民飲用塘水的基因毒性和致癌性，提出了切實可行的預防和阻斷措施。
  7. 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。
  8. Predictive values of qt vicaricance in pedo - viral myocarditis events

    離散度預示小兒病毒性心肌炎事件發生的價值
  9. Israelensis recombinants, which contained recombinants plasmid pmt4 and pmt9 respectively, were obtained by electroporation. the bioassay results showed that the recombinants b - pmt9 and b - pmt4 had toxicities both to resistant and susceptible c. quinqnefasciatus larvae during vegetative growth stage, having the lc ? o values similar to that of. fi. sssii - 1. however, the toxic levels of the final sporulated cultures of recombinants b - pmt4 and b - pmt9 differed, with a lcso value of 2 49mg / ml for b - pmt9 and little toxicity for b - pmt4 by using the plasmid pmt9, m txl gene from b. sphaericus was ligated with p20 and cytjaa gene, giving recombinant plasmid pmpx2

    含有pmt9和pmt4的大腸桿菌轉化子能表達產生mtx1毒素，發酵液對敏感和抗性致倦庫蚊幼蟲具有中度毒殺作用；含有pmt9和pmt4的蘇雲金芽孢桿菌轉化子b - pmt9和b - pmt4在營養體生長階段對敏感蚊幼和抗性幼蟲也具有毒性，毒力與野生型b . sss - 1相當，而不同轉化子在芽孢形成期的毒力因插入的mtx1基因轉錄方向不同而表現出差異，其中b - pmt4對目標蚊幼毒力極低（ lc _ （ 50 ） 10mg ml ） ，而b - pmt9對蚊幼蟲具有毒性（ lc _ （ 50 ） = 2 . 49mg ml ） 。
  10. The stinging hairs, or suckers, of these brightly colored, fleshy caterpillars contain mildly venomous toxins used for defense purposes

    這種肥嘟嘟的毛蟲身上顏色艷麗的毛發，或稱為吸管中含有輕度毒性的毒素，以此御敵。
  11. Lead content in blood and urine of acute tetraethyl lead poisoned patients

    急性四乙基鉛中毒患者血鉛和尿鉛含量與中毒程度的關系
  12. 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） 。
  13. " foot - and - mouth disease ( fmd ) （ or hoof - and - mouth disease ） : highly contagious viral disease of cloven - footed mammals ( including cattle ), spread by ingestion and inhalation.

    口蹄疫:一種具高度傳染性的病毒性疾病，能感染所有偶蹄哺乳動物（如牛、羊、豬） ，很少感染人類。
  14. The variety of the activity of na + / k + - atpase, ca2 + - atpase and sod by increase calcium concentration in the water, and the effects of cd2 +, estradiol - 17 and ca2 + on the lymphocyte proliferation from blood and head kidney of ctenopharyngodon idellus were also investigated the significance of this paper is that to research the toxicity of cadmium to the fish and to search the mechanism of the cadmium toxicity to the fish. and the protection of calcium on cd2 + toxicity

    本論文研究了鎘對草魚的毒性作用，比較了在不同鈣濃度條件下，其鰓、肝臟、腦等組織中sod 、 na ~ + k ~ + ? atp酶、 ca ~ （ 2 + ） ? atp酶的活性變化規律以及鎘和17 ?雌二醇對草魚血液及頭腎淋巴細胞增殖的影響，評價鎘對魚類的毒害作用，探索鎘的毒害機理。
  15. High concentration short - time impact examination showed that the impact of pyrethroid on carp is not severe when the case of concentration is not too high and time is not too long, most of the poisoned carp come back after the carp that exposured high concentration cycloprothrin were transferd to fresh water

    高濃度短期沖擊試驗說明在擬除蟲菊酯濃度不太高，暴露時間不太長的情況下對鯉魚的毒性影響不大，受到高濃度擬除蟲菊酯暴露的鯉魚轉移到清水中后，大部分有一定中毒癥狀的魚體，都會逐漸恢復過來。
  16. All results indicated that cd2 + had obvious harm to the enzymes. the endogenous protective system could be induced in refained degree under the press, however, which came to weakening along with the aggravation of cadmium, adding to extrinsic calcium could enhance the activities of sod and atpase properly, so protecting the damage of cadmium to the fish

    鎘對草魚酶系統有明顯的毒害作用，內源性保護系統的保護作用在受到脅迫后能夠在一定限度內被誘導加強，但防禦反應隨著重金屬離子毒害的加重而減弱，提高水中ca ~ （ 2 + ）濃度能夠適當增強體內酶的活性，對草魚的鎘毒性危害起保護作用。
  17. Thus, la presents a certain genotoxicity

    顯示一定濃度的稀土元素鑭具有明顯的遺傳毒性。
  18. A potential new drug, for example, could " help the neuron to keep extruding sodium so it can help the sodium - calcium exchanger get rid of calcium, thereby not allowing calcium to reach toxic leels, " on gersdorff said

    比如說有一種藥可以幫助神經元泵出鈉離子從而幫助鈉鈣交換器運輸鈣離子，阻止鈣離子達到神經毒性濃度。
  19. These findings demonstrate the varied involvement of peripheral hearing and central brainstem functions in the neurotoxicity of neonatal hyperbilirubinemia

    這些結果顯示出膽紅素神經毒性的病變包括末梢聽神經至中樞腦干之不同程度的傷害。
  20. ( 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。
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