ph range 中文意思是什麼

ph range 解釋
氫離子范圍
  • ph : PH ＝public health 公共衛生。【化學】表示氫離子濃度的倒數的對數的符號。
  • range : vt 1 排列；整理（頭發等）。2 使歸類[班、行、隊]；把…分類。3 〈用被動形或反身形〉加入，站住…的一邊...
  1. Isolate all grew well in the culture medium with initial ph 4 - 10, the optimal growth temperature range was from 28 to 30. 5 degree c. it grew well on the medium for fungi growth, such as pda medium and czpek medium etc, and also grew well on the cause ' s i medium and the non - nitrogen medium, but little growth on the luria bertani medium ( lb ) and beef extract peptone medium. it did not need special nutrition factors for growth, but source of the carbon was the key factor to growth, all of its nutrition needs were different from that of common bacteria

    該菌在初始ph4 - 10的培養基中都能夠生長，生長最適溫度范圍為28 - 30 . 5 ，在pda 、查氏等真菌培養基中生長旺盛，在高氏1號和無氮源培養基中同樣生長良好，而在lb與牛肉膏蛋白腖等細菌培養基中生長很差，碳源是其生長的關鍵因子，這有別於一般細菌的營養需求。
  2. Hcl buffer solution at ph 5. 5, a sensitive adsorptive complex wave of in - lumogallion was obtained by single - sweep polarography. the change of peak height with the concentration of indium is linear in the range from 1. 0 10

    - hcl底液中可獲得銦-熒光鎵體系靈敏的絡合吸附波。測定銦的線性范圍為1 . 010
  3. It is shown that the effect of pac removing fluoride is closely related to ph value and the optimum range of ph value is between 6. 1 ? 7. 1. under this condition, further studies are made on the optimum coagulant dosage, mixing time, artificial turbidity, filtration rate and filter bed ' s depth and the optimum range of these parameters have been determined

    堿式氯化鋁的除氟能力與原水的ph值有密切的關系，除氟最佳ph值范圍為6 . 1 ? 7 . 1 。在此條件下，進一步對最佳投藥量、混合時間、反應時間、人工輔助投加濁度、濾速及濾層厚度進行了研究，確定了其最優的取值。
  4. The hemagglutinating activity of amphioxus skin mucus was decreased after heating at 60 for 30 min, and was almost lost upon heating at 100 for 30 min. the hemagglutinating activity of the skin mucus remained stable in the ph range from 6 to 10, but it was inactivated at ph above 10 or below 6. the hemagglutinating activity in the skin mucus is inhibited by d - galactose, which is same with the hemagglut inating activity of the humoral fluids of amphioxus

    在60保溫30分鐘后，凝集素的凝集活性下降，在100保溫30分鐘后，凝集素凝集活性幾乎完全消失；在ph6 - 10的范圍內，凝集素的凝集活性穩定， ph大於10小於6的條件下，凝集素的凝集活性消失；文昌魚體表粘液中的凝集素受d -半乳糖苷的抑制。
  5. Genetic diversity and phylogeny of 55 slow - growing rhizobia isolated from peanut ( arachis hypogaea ) in china were determined by analysis of host - plant range, phynotype, 16s rrna rflp, 16s rrna sequence, 16s - 23s igs rflp, rapd, rep - pcr, dna - dna hybridization homology. at the same time, the competitive nodulation capacity of rhizobia, effect of host plants and soil ph on the rhizobia were determined for screening and improvement of high effective rhizobium inoculant

    本研究採用宿主范圍試驗、表型性狀測定、 16srrna - rflp 、 16srrna序列分析、 16s - 23srdnaigsrflp分析、 rapd分析、 rep - pcr分析和dna - dna同源性分析等技術系統研究了從我國不同地域分離的55株花生根瘤菌的遺傳多樣性及其在根瘤菌系統發育中的地位和相互關系。
  6. Minimum zinc solubility is in the ph range 6. 0 to 8. 0.

    土壤PH值為60-80時，鋅的溶解度最小。
  7. By the mixing of sodium sulfide and sodium molybdate within a suitable ph range, molybdenum trisulfide particles were obtained as precipitation substance

    在一定酸性的條件下將硫化鈉和鉬酸鈉的水溶液進行混合與反應，生成棕色三硫化鉬膏狀沉澱。
  8. Effects of diverse environmental factors on the growth rate ( od4oo ) and nitrogenase activity ( ara ) of the strain w12 hi nitrogen - free culture were investigated in our experiments. the results implied that the strain w12 could easily adapt to different cultural conditions : it could use various carbon sources ( especially glucose, sucrose, malic acid, mannitol ), propagate quickly and fix nitrogen at a temperature range of 15 ? to 40 ? and at 25 - 35 ? for optimum, at a ph range of 4 to 8. 5, at a saline concentration range of 0. 01 % to 1. 5 % ; low nlv " concentration had little effect on its nitrogenase activity. ara could also be detected when it grow in the culture media with 5mmol / l ntv "

    W12菌株對環境因子的適應性研究：無氮培養條件下，測定溫度、碳源、酸堿度、滲透壓對w12生長及固氮能力的影響，結果表明，在15 - 40下均能生長並表達固氮酶活性，其最適生長及固氮的溫度為25 - 35 ；能利用葡萄糖、蔗糖、蘋果酸、甘露醇等多種碳源生長並固氮，當培養基中同時存在蔗糖和蘋果酸時，細菌生長和固氮活性最強；在偏酸和偏堿的條件下（ ph4 . 5 - 8 . 5 ）均能保持較強的生長勢和較高的固氮酶活性，並能通過調節自身代謝平衡並適應環境的酸、堿性變化，使培養液趨于中性：能耐受較高的滲透壓，培養液中卜、 5 naci濃度對其生長和固氮酶活性影響不大，當naci濃度升至2時，菌株的生長勢及固氮酶活性才有所下降：低濃度的鉸對其固氮酶活性影響不大，在0
  9. It is studied that the activity against eumycetes of the fermentation filtrate ( 16h ) of strain jw - 725 is the strongest. the optimum nutritional sources are wheat bran and soya bean meal. the fermentation filtrate reserved under 4 still has bioactivity after 20 days or so, but its bioactivity decreases much while being treated under high temperature. the ph of fermentation filtrate has much influence upon the bioactive substance, and it remains activity at the range of 5

    發酵液在4下保存20天左右仍有抗菌活性；但經高溫處理后，其抗菌活性降低很多； ph對抑菌物質的生物活性影響比較大，抑菌物質保持活性的ph范圍是5 . 0 7 . 0 。分離到的多粘芽孢桿菌（ b polymyxajw - 725 ）對柑橘青黴菌（ p
  10. The monitoring process is carried out on board a scientific vessel the dr catherine lam which is equipped with state - of - the - art technology. at various locations, scientists measure a range of parameters, such as temperature, ph, salinity, turbidity and dissolved oxygen

    海水監測工作是在設備先進的林蘊盈博士號監測船上進行；研究人員在海上測量各種水質參數，包括水溫、酸鹼度、鹽分、混濁度、溶解氧含量等。
  11. 2 extensive ph range of application : it will go into effect during ph5 - 12

    廣泛的ph值適應范圍： ph5 - 12范圍內可發揮增稠功能。
  12. Electrocatalytic oxidation of glucose at the sensor is determinated with respect to solution ph, temperature and concentration of water - soluble mediator naphthol green b. under optimal conditions, the sensor displays a good linear response in the concentration range of 8. 0 + 10 - 4 mol / l - 3. 6 + 10 - 2 mol / l, and the detection limit is 5. 0 + 10 - 4 mol / l

    文中討論了溶解性媒介體萘酚綠b的濃度、溶液的ph值和溫度對該電極電流響應的影響。這一介體型葡萄糖傳感器在優化的實驗條件下，對葡萄糖表現出良好的響應特性，如響應快、重現性和穩定性好。
  13. The parameters of impregnation are as follows : ph is about 3, the range of temperature is from 20 to 45, and the time is about 2 to 6 hours. after the necessary treatments, zirconia cloths had the optimal strength when the diameters of zirconia fibers were controlled in 4um to 7um, and the sizes of zirconia grains were in 50nm to 100nm. the affec - ting factors were discussed and the liner regression analysis of the cloths was made, from w hich they show that the diameters and grain sizes have the significant influences on zirconia cloths. the obtained zirconia cloths have been accepted for use in nickel - hydrogen batteries by practical use

    研究結果表明：粘膠類纖維布最適合制備氧化鋯纖維布的前軀體；鋯液濃度以飽和溶液為宜；浸漬工藝參數為ph值3左右，溫度20 45 ，時間2 6小時；多餘鋯鹽的去除、浸鋯液后纖維布的整平處理及平燒施應力燒成有利於氧化鋯纖維布的柔軟及平整; 200 600燒成溫度段應緩慢燒成，控制氧化鋯纖維直徑在4 7 m ，氧化鋯晶粒尺寸50 100nm時氧化鋯纖維布的強度最好。
  14. The first part has mainlty studied on biological character of edible fungi, explained the development condition of edible fungi from six aspects ( nutritional requiremnet, temperature range, ph, moisture reqirement, the environment condition and the lighting condition )

    第一部分：研究了食用菌類微生物的生物學特性，並從六個方面（營養條件、溫度、濕度、酸堿度、光照、空氣）說明了食用菌生長發育所需的外界條件。
  15. Mightysil gp is a versatile, highly reliable hplc column designed for use with a variety of samples having a wide ph range from acidic to basic

    Mightysil gp為一用途廣泛，且具高信賴度之管柱，可用於分析多種具備廣泛酸鹼值之樣品。
  16. 2. preparation and application of variablevalency drugs pqc sensors based on ion - pair complexes. pqc sensors obtained much higher sensitivity and wider ph range than the electrodes based on nemst equaion

    來自各種藥物制劑和體液中各種藥物的分析結果表明，這種傳感器製作簡便，操作方便，靈敏度高，選擇性好，線性范圍一般較寬。
  17. Escherichia coli phytase appa is an alternative enzyme with performance advantages over the conventional a. niger enzyme. the appa phytase displays several favorable characteristics : an acidic ph optimum close to the physiological ph range of the stomach of pigs and chickens, higher affinity to sodium phytate, greater resistance to pepsin than the commercially available a. niger phya, and higher catalytic efficiency for phytate than that of all other known phytases

    大腸桿菌來源的appa植酸酶是一種新型的植酸酶，與常規的黑麴黴植酸酶相比具有許多優點，如與豬、雞等畜禽胃的ph環境更加適應，與底物植酸更強的親合性以及對消化道蛋白酶更強的抵抗性。
  18. 5 and was virtually inactive above ph 6. 0. when the enzyme was incubated at various ph values at 37 ? c for 30 min in the absence of substrate and the residual activity was measured, the phytase was found to be stable at the ph range of 2 to 8

    該酶反應的最適ph值為5 . 5 ，在phz一6之間都有較高的酶活性， ph大於6時植酸酶的活性迅速下降，在phz一8之間的穩定性很好，活性> 70 % 。
  19. Durability in water at given ph : no effect on material in ph range of 3 - 11

    耐酸堿性：在ph為3 ? 11范圍的水中，本品不受影響。
  20. Each species has the ability to grow within a specific ph range, which may be broad or limited, with the most rapid growth occurring within a narrow optimum range

    每一種生物都具有在特定酸堿度范圍內生長的能力，這個范圍可能寬或窄，在一個窄小的最適范圍內會有最快速的生長。
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