P - px 中文

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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。
As to the separation of p - xylene / m - xylene , in order to blend polymer hydrophobe with p - cd which is preferential to adsorb p - xylene , etherified p - cd was synthesized using benzyl chloride ( phch2cl ) . the influences of etherification conditions on the reaction conversion and the degree of substitution of etherified p - cd were investigated . the reaction conversion increases with the increasing of molar ratio of phcr ^ cl : p - cd and the concentration of p - cd 對于px mx體系的分離，為使對px具有優先絡合能力的一環糊精( cd )能夠與油溶性高分子共混，本文采用williamson合成法運用氯化芐( phch _ 2cl )使-環糊精( - cd )醚化，并由元素分析結果，計算出醚化產物的取代度和轉化率，系統地考察了反應條件對轉化率和取代度的影響。
Compared to the single hg2 + treated , se4 + + hg2 + the mixed exposure could restrain the fall of the activity of t ? aoc , sod and gsh ? px , reducing the level of lipid peroxidation , and alleviating membrane damage , represented with the heighten na + - k + - atpase activity and reduced mda concentration , resulting in the increased resistance to hg2 + damage . however , se4 + were incapable of preventing from the damage of hg2 + ultimately , along with the exposure period , regardless of the fact that the obvious enhancement of t - aoc and atpase activity 混合處理后，與單一汞處理相比， se ~ ( 4 + )在一定程度上能有效抑制汞脅迫引起的t ? aoc ， sod ， gsh ? px的降低，降低膜脂質過氧化水平，減輕了對膜的硒對汞致劍尾魚抗氧化系統的毒害和生理損傷的拮抗作用損傷，表現為隨一k + / atpase活力升高，而mda含量降低，提高了機體對hg葉毒害的抗性;但隨著染毒時間延長，硒不能最終阻止毒害的加深。
This paper chooses the indicators of economy and land quality input which has influence on the output , depending on cd - productive function to establish the function between input and output : y : productive forces of the cultivated land f : input of the fertilizer and agricultural chemical i : input of the irrigation l : input of the labor q : input of the land quality a : the level of average management t : the level of changing management a , b , c , d , f : productive elasticity coefficient the factor of the land quality includes texture , content of the organic matter , degree of the pickled , the structure of the soil 本項研究選擇了影響農用地總產出的經濟投入指標和土地質量投入指標，借助c - d生產函數，建立土地投入產出的函數關系： y = a ? e ~ ( ft ) ? f ~ a ? i ~ b ? l ~ c ? q ~ dy為以土地總產值表示的土地生產力f為化肥和農藥的投入i為灌溉投入，即灌溉所需用的水電費l為勞動力投入(考慮了農業機械投入的修正) q為土地質量投入a為平均管理水平t為變化的管理水平a 、 b 、 c 、 d 、 f分別為各相應生產要素的產出彈性系數其中，土地質量因子包括表土質地（ t人有機質含量矚入鹽漬化程度px土體構型p ）等。他們之間的關系為： q （ a ； xt a 。
Compared with the quiet state , the rate of sod / mda of red cell , sod / mda x gsh - px / mda of serum were decreased after exercise , it showed : although the activity of antioxidant enzyme was increased , the capacity of antioxidant system was decreased , the tissues or cells might be injured . the concentration of blood locate was increased significantly , which might be one of the reasons causing the exercise fatigue 2運動后，機體紅細胞sod mda 、血清sod mda 、血清gsh - px mda華唐賦圾大竿洋礦學虜2002厲匝士研究生畢業樁文? ?第二頁共44頁的值同安靜時相比，呈下降趨勢，表明：雖然運動后的抗氧化酶的活性增強，但機體抗氧化系統的能力是下降的，機體組織細胞有可能受到損傷。
Px has no effect to hb concentration in three kinds of exercise training , but can decrease the bun concentration of one internal training group in the times of calm and immediately after training . and px has the function of decrease the ck release speed of muscle immediately after training and speeded up the recovery of ck 服用px對三運動模型大鼠hb無顯著影響；但可以降低一次性間歇運動后即刻和安靜時的bla濃度：同時，可以降低耐力訓練模式和間歇訓練模式的運動后即刻的ck釋放速率，加快ck的恢復。
Px series pumps are the centrifugal pumps which are direct - coupled between mini - type electric machine and single stage pump body , adopting the reliable and durable mechanical seals , the centrifugal pumps possess large flow quantity , with certain ability of discharging dirty water and particle Px系列單級離心泵是一種高效的家用電泵，它由節能電機和離心泵組成，采用高質的特殊的機械密封裝置，重量小，消耗低，操作使用方便，安全可靠，它適用于家用及小農田使用，花園
Methods : 1 ) 12h after irradiation , the cell cycle of nih3t3 cells was determined by flow of cytometry and the ratio of alternations in p16 gene exon - 2 was evaluated through pcr - sscp . 2 ) the content of mda , the activities of the sod and gsh - px in the supernatant of nih3t3 cells and the cells were measured by detecting kits immediately after irradiation . 3 ) the level of matrix metalloproteinase - 2 ( mmp - 2 ) in hela cells was detected by western - blotting and dot - blotting 2h after irradiation 具體方法為： ( 1 )照射后12h ，收集nih3t3細胞，用流式細胞儀檢測各組細胞的細胞周期， pcr - sscp檢測抑癌基因p16的變化； ( 2 ) nih3t3細胞照射后立即收集細胞和細胞上清，用試劑盒測量mda含量和sod 、 gsh - px的活性并觀察其變化； ( 3 ) western免疫印跡和點雜交法檢測照射2h后的各組hela細胞中基質金屬蛋白酶- 2 ( mmp - 2 )的表達變化。
The sod activity of serum was higher significantly compared with the no - o2 intake group ( p < 0 . 05 ) after exercises immediately . regarding the extent change of serum gsh - px , the group of o2 intake was higher than no - o2 intake group . it showed : there might be a benefit to the activity of antioxidant enzymes by breathing some hyperoxia o2 after exercise 紅細胞sod的30分鐘后的值仍高于運動即刻，而不吸氧組的值低于運動即刻，血清sod值同不吸氧組相比顯著高于運動即刻t 0刀5人血清hpx值的變化當中，吸氧組的增加變化幅度大于對照組，表明：運動后，吸一定濃度的高壓氧可能有利于增加機體運動后抗氧化酶的活力。
With annual sales of $ 7 . 7 billion , praxair , inc . ( nyse : px ) is the largest industrial gases company in north and south america , fortune 500 company , and one of the largest suppliers worldwide that supplies atmospheric , process and specialty gases , high - performance coatings , and related services and technologies 年銷售額達77億美元的財富五百強企業普萊克斯（紐約證交所交易代碼： px ）是一家全球領先的工業氣體專業公司，同時也是北美和南美洲最大的工業氣體供應商，提供大氣氣體、工藝氣體、特種氣體、高性能表面涂料和相關的服務與技術。
According to an abbreviated version of the report posted on the official website of the municipal government , experts concluded that the southern area of haicang district , the original location of the planned px plant , was too small and inadequate for the diffusion of atmospheric pollution 根據在廈門市政府官方網站公布的環評報告簡本，環評專家得出的結論是： “海滄南部空間小，建設px項目的地理條件不適合污染氣體的擴散。 ”
One internal exercise : the activity of sod and gsh - px in myocardium and muscle is found lowest and the mda content of myocardium is highest , but the mda content of muscle is similar to that of the endurance training and internal training style 運動后48h ，三種運動模式中，一次性間歇運動大鼠心肌和骨骼肌的孤d和付職兩種酶的活性最低（ p o刀5人心肌oa水平在三運動模式中最高d
7 . px express its antioxidant function in three exercise training style groups , and in the endurance training group the function is most obviously which can give a union strong effects in antioxidant with exercise style 服用px對h運動模型大鼠都有較好的抗氧化功效，但對耐力訓練、模式的積極作用最為明顯，能發揮耐力運動訓練和服用px的聯合促進功效巾
1 fu y ， huang y ， huang px ， et al . research tendency of thrombolysis of acute ischemic cerebrovascular disease using traditional chinese medicine and metabonomic study . liaoning zhong yi za zhi . 2006 ； 33 （ 6 ）： 662 ? 664 . chinese 付于，黃燕，黃培新，等。急性缺血性腦血管病的中藥溶栓治療與代謝組學的研究趨勢。遼寧中醫雜志。 2006 ； 33 （ 6 ）： 662 ? 664
When bile reflux episode took place , ph showed no relationship with absorbance value ( pxj . 05 ) ; while gastric alkalization occurred , there was also no relationship between them ( px ) . 05 ) 08的時間ph34 。夜間胃內ph值升高（自發性堿化）和膽紅素吸收值升高（反流事件）不同時發生，膽紅素吸收值升高時， ph值與ba值不相為，一0 067 ， p 0
The activity of cells became weaker and weaker with exposure time . it was conspicuous that uva damaged the activity of cells . the contents of mda upgraded and the contents of gsh - px degraded 結果表明：隨著uva照射時間的延長，細胞的活性明顯降低，說明uva對細胞的氧化損傷是明顯的，其中表現為mda的含量升高、 gsh - px的含量降低。
The decreased extent of sod / lpo on the o2 intake group was lower than the that on the contrast group significantly , and so were the sod / lpo , gsh - px / lpo of serum , but no significance 5吸氧后，機體紅細胞sod mda的下降幅度要比不吸氧組低，并呈顯著性。血清中sod mda ， gshpx mda值的下降幅度同樣比不吸氧組低，但其差異性不顯著。
The city in the wealthy eastern province of fujian announced on wednesday it was suspending construction of a plant to make paraxylene ( px ) , a petrochemical that goes into polyester and fabrics 這座位于富裕的東部省份-福建的城市，星期三宣布即將興建制造對位二甲苯（ px ）的化工工廠，對位二甲苯用于生產聚酯和紡織產品。
About 80 local lawmakers and political advisors were also in attendance and out of the 15 that addressed the forum , 14 spoke against the municipal government ' s plan to build the paraxylene ( px ) plant 大約80名人大代表和政協委員出席座談會，在15名發言人中有14名發言表示反對政府建設px項目的計劃。

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px 短語和例子PX ＝1.please exchange 請...

pxt