濃時積 的英文怎麼說
中文拼音 [nóngshíjī]
濃時積
英文
concentration x time-
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。Success of the model was enhanced by increasing the oxygen concentration on initiation of the bypass, maintenance of an appropriate hematocrit and priming with non - citrated blood crystalloid
此模式是以藉著在啟始?路時增加氧濃度，維持適當血球容積以及用無枸櫞酸之血液晶質啟動而使得本技術得以成功。The iron doped tio2 thin films showed almost no photocatalytic activity for the photodegradation of no in the gaseous phase when the calcination temperature was lower than 400 c. this was due to the fact that the phase structure of the film was amorphous. at 400 c, the film appeared obviously photoactive du
對于用液相沉積法所制備的tio :薄膜，薄膜中的si （或fe ）含量和薄膜的厚度可通過調節前驅體濃度、溶液的ph值、基片的沉積溫度和沉積時間，薄膜的熱處理溫度和時間進行有效地控制。Sds - page results showed that as to mut + recombinant highest yield was obtained after 4 days inducing and with the culture time prolonged it reduced. pokeweed antiviral protein gene expressed well when methanol concentration reached 10g / l. pokeweed antiviral protein obtained high yield in thin acidic culture medium ( ph6. 0 - 6. 4 ) and its quantity in total mass of secrete protein exceeded 30 %
Sds - page分析結果表明， mut ~ +組菌株在甲醇誘導第四天後pap在培養液中積累量達到最高水平，延長培養時間會導致產量下降；在10g / l的甲醇濃度誘導下， pap的表達量達到最高；培養基ph值在偏酸性條件下（ 6 . 0 - 6 . 4 ） pap的表達量都維持在較高的水平。The experiments results showed that when concentration of solid substance of the waste aqueous solution was condensated to 13 % ( w / v ) on vacuum, 95 % alcohol ( 1 : 1, v / v ) was added to the condensated solution to sedimentate polysaccharose, sedimentation was centrifugalized, repeated above treatment, and filtrate was collected and condensated on vacuum, then chlorogenic acid crystal of 76 % purity was obtained
多次實驗結果表明，浸提液濃縮到固形物含量在13 %時，加入浸提濃縮液體積1倍量的95 %的乙醇沉澱並過濾掉多糖，反復處理兩次，濾液再經真空濃縮得到純度76 %左右的綠原酸。Time integral of radionuclide concentration in air bq
空氣中放射性核素的時間積分活度濃度貝可Thirty - one crystals of polyoxometalates ( 1d, 2d, 3d ) were prepared by means of middle hydrothermal technique, molecular design and self - assembly, and characterized structurally by single crystal x - ray diffraction. the thermal stability, activity of catalysis and magnetism of some compounds were systematically studied. the continuous appearance of p - v - o, p - mo - o, v - mo - o, v - o system with novel structure enrich polyoxometalate chemistry, the reaction characterization and the synthesis law of molybdates, tungstates and vanadates under hydrothermal conditions were explored
由於p - v - o 、 p - mo - o 、 v - mo - o 、 v - o體系新結構不斷出現，豐富了多金屬氧酸鹽化學，探討水熱條件下釩、鉬、鎢物種的反應特性和生成規律，研究原料的選擇、配比、加料順序、濃度、酸度、反應溫度、反應時間等因素對產物的生成及結構的影響，為新的催化劑、導電材料、磁性材料的研製與開發積累經驗。According to the thermodynamics analysis of spontaneous mineral of iron, we assumed : when sewage disposal, if sulphur is eliminated prior, this makes the consistency of iron ' s ion keep high relatively, it will react with phosphorus, produce heterosite, vivianite precipitate. this will decrease the interior load of the phosphorus in sediment, and reduce the consistency of the phosphorus in the dianchi lake
根據鐵的自生礦物的熱力學分析，提出設想：如果在污水處理時，優先脫硫，就使鐵離子的濃度保持較高，與磷生成磷鐵礦、藍鐵礦沉澱，就可以減輕沉積物中磷的內源負荷，進而降低滇池湖水中的磷的濃度。With the increase of substrate salinity, the accumulated sodium and chloride increased. as a result, all tissues had considerablly lower osmotic potentials than that of the solution on which they were grown at 60 day after planting. changes in length, dry weight, water content, ion concentrations, osomotic potential, ion content of hypocotyls during culture indicated that viviparous hypocotyls not only afforded nutrition for seedling growth, but also reserved ions, thus charged the balance of ion concentration and osmotic potential of the seedling
鹽脅迫下幼苗單株葉面積下降的程度大於光合速率的降低，葉面積的減小是導致減產的主要原因；木欖幼苗各組分中的離子濃度以及含量隨栽培時間而變化；栽培初期剛萌根時，幼苗原胚軸中的離子滲漏到培養液中；此後隨著根系的發育以及芽的生長，幼苗轉為從培養液中吸收離子，並以吸收na 、 cl離子為主。Traditionally it is considered that particles are formed into the single - chain structure, while the body - centered tetragonal ( bct ) structure comes into being when the particle volume is a little high. and the other structure models such as the layer model, the fiber model, the column model and so on
粒子發生聚集所形成的結構傳統的認為是單鏈模型，而當粒子的體積濃度比較大時，一般認為是體心四方結構（即bct模型） ，此外還有諸如層結構模型、纖維結構模型、圓柱結構模型等等。The effective regeneration procedure is soaking the adsorbent 30 ~ 50h with 1 - 2 % al2 ( so4 ) 3 for activated alumina and 20 ~ 30h with 1 - 1. 5 % naoh for bone char. studies show both activated alumina and bone char are excellent adsorbents for the removal of fluoride from drinking water. fluoride concentration below 1. 0mg / l can be acquired easily with them and meets the requirement of drinking water standards
對兩種除氟劑進行的再生液與吸附劑體積比為1 : 1的再生實驗表明：用硫酸鋁溶液對活性氧化鋁再生，再生濃度為1 2 ，再生時間為30 50h ，沖洗浸泡時間為5h效果較好；對骨炭再生，氫氧化鈉再生液濃度為1 1 . 5 ，再生時間為20 30h效果較好。The entering of the tourist and lamp - light gave much energy to furong cave and the temperature in the cave rised slowly. the different temperature between the outer and the inner as the air circulation, would make the cave wet seriously in the summer and dry in the winter. the density of co2 would go up because of piston - effect, cave depositing and the tourists " entering
遊人的進入和洞穴燈光的使用，給芙蓉洞內帶來了大量的能量，致使洞穴空氣升溫；由於動內外的溫度差和空氣的流通，開放的洞穴出現夏季高濕，冬季乾燥的變化現象； co _ 2的濃度會因為活塞效應、洞穴沉積和遊人的進入而升高，但影響最大的還是遊人，當遊客量較大的時候，洞穴co _ 2的濃度會隨遊人進入的數量增加而明顯升高，洞內co _ 2含量峰值記錄最高出現了6200ppm的記錄。The critical concentration of mannitol stress is 0. 8 - 0. 9mol - l - 1. the maximal level of aba accumulation is attached after 5 hours " treat with 0. 9mol - l - 1 mannitol solution. cell wall plays important roles in tobacco cells perception to osmotic stress
滲透脅迫誘導aba積累的水平與脅迫處理的濃度和時間相關，脅迫處理的有臨界濃度為0 . 8 ? 0 . 9mol ? l ~ （ - 1 ） ， aba積累水平在脅迫處理5小時后達到最大。When sn2 + concentration in the bath is lower, sn2 + activity is not enough causes slow deposition rate and slow growth rate of crystallizing nucleus, so crystalline granularity deposited is smaller ; when sn2 + concentration in the bath is higher, the dispersive ability of the bath decreases and the surface quality of the deposits sets worse
鍍液中sn ~ （ 2 + ）濃度較低時，離子活度不夠，沉積速度慢，晶核成長速度慢，使沉積的晶粒粒度較小； sn ~ （ 2 + ）濃度過高，鍍液分散能力降低，使鍍層的表面質量下降。No production by mouse embryos embryos were cultured in hanks balanced salt solution for 4 hours. then the culture medium was collected, and equal amount of griess reagent was added into it. no concentrations were determined indirectly by spectrophotometry
胚胎發育過程中no的生成胚胎在hanks液中培養4小時后，取培養液加入等體積的griess試劑，用分光光度法檢測培養液中亞硝酸鹽的濃度，依此得知no的生成。The recombinant vectors were transformed into e. coli m15 respectively and the expression was induced based on the optimal values of the iptg concentration incubation temperature and induction time determined in the previous section
根據優化確定的iptg誘導濃度、誘導溫度和時間進行誘導表達。 5的積層膠， 15的分離膠，變性聚丙烯酰胺凝膠電泳（ sds - page ）檢查表達情況。On the basis of theory analysis, the average transmitted light intensity ( correspond to dc value ) was determined as characteristic parameter of raw water using photoelectric method for monitoring the fluctuation of transmitted light and photometric dispersion analyzer ( pda ). the dc value was closely related to both particle concentration and surface area of sand clay simultaneously. the experimental results shows that there is an exponential function relation between dc and surface area of sand clay in unit volume water ( sp ) : dc = asbp in which a and b are empirical coefficients. then the formula of macromolecule flocculant dosage is found to be d = f ( dc ) = e ( dc ) f in which e and / are empirical coefficients and the average correlation coefficient equal to 0. 981. so the model of automatical control system of water treatment plant was established using the formula
應用透光率脈動檢測技術和光散射顆粒粒度分析儀（ pda ） ，通過理論分析，將pda的輸出信號之一? ?平均透光強度（對應于dc值）作為原水的特性表徵參數， dc值可以同時反映顆粒濃度和比表面積因素的影響，試驗結果證明， dc值與單位體積水中泥沙顆粒總表面積s _ p之間具有很好的冪函數關系： dc = cs _ p ~ d ，式中c 、 d為經驗系數，進而得到了以dc值為參數的高分子絮凝劑投藥量公式： d = f （ dc ） = e （ dc ） ~ f ，式中： e 、 f為經驗系數，平均相關系數達0 . 981 ，利用所建立的公式，建立了前饋? ?后饋聯合控制的在線自動投藥模型。On the saturate concentration, the moisture density in the micro - holes was 100 times larger than the vapor density in the standard state, but only 8 % of liquid water. the water inside the plastic material was in a special liquid state. the delamination and the delamination recovery were observed by c - sam
當水汽濃度達到飽和時，在塑封材料中可以被水分子進入的有效體積內，實驗條件下的水汽密度為標準狀態下水蒸氣密度的100倍，為液態水密度的8 ，表明在塑封材料中的水分子以一種特殊的液態水形態存在。The alternative changes of paleoenvironment favored the formation and imbedding of brine, which is the source of salt - water intrusion ; and the paleochannel that formed during regressive of sea level is the path of salt - water intrusion
海進時期，大面積的濱海平原被淹沒，在近海平原窪地滯留的海水經過蒸發、濃縮變為鹵水，成為鹹水入侵的物源；海退後陸源碎屑在濱海地區沉積形成了巨厚的古河道砂層。The concentrations of mercury and selenium in ten dolphin livers were determined. mercury and selenium exist in the livers as abnomal high concentrations at approximate 1 : 1 molar ratio of mercury to selenium
10個肝臟樣品汞硒含量測定結果表明，海豚肝臟中同時積累了高濃度的汞和硒（ r = 0 . 87 ） 。分享友人