WordNet

send a message from one computer to another to check whether it is reachable and active; "ping your machine in the office"
a sharp high-pitched resonant sound (as of a sonar echo or a bullet striking metal)
contact, usually in order to remind of something; "Ill ping my accountant--April 15 is nearing"
hit with a pinging noise; "The bugs pinged the lamp shade"
make a short high-pitched sound; "the bullet pinged when they struck the car"
(from potential of Hydrogen) the logarithm of the reciprocal of hydrogen-ion concentration in gram atoms per liter; provides a measure on a scale from 0 to 14 of the acidity or alkalinity of a solution (where 7 is neutral and greater than 7 is more basic and less than 7 is more acidic); (同)pH scale

PrepTutorEJDIC

飯岡拓馬,出山義昭,吉村善隆,鈴木邦明
北海道歯学雑誌 32(2), 202-209, 2012-03-15
… を目的に研究を行った．活性はパラニトロフェニルリン酸（pNPP）を基質として測定した．ALP活性のpH依存性を調べたところ，骨型と小腸型は10.22，肝臓型は9.78，胎盤型は10.62で最大活性を示した．それぞれの至適pHにおけるALP活性の阻害剤濃度依存性を調べた．Tetramisole，levamisoleとL-homoarginine存在下で，４種のALP活性はいずれも阻害剤の濃度に依存して抑制されたが，胎盤型の阻害は最大でも20％以下であった．骨型と肝 …
NAID 10030576420

丸尾雅啓,永岡一樹,小林一星,小沢佳那子,小畑元
分析化学 = Japan analyst 59(12), 1143-1147, 2010-12-05
The pH conditions for the colorimetric determination of Fe(II) in oxic natural water samples were reexamined for analyses using PDTS (ferrozine) or bathophenanthroline disulfonic acid salt for the fix …
NAID 10026969184

三ツ井敏明,朝倉剛,中山勇希,高山和俊,廣瀬将太,片峰拓紀,青山慎,唐橋あゆみ,金古堅太郎,石山隆一,伊藤紀美子,堀秀隆,梶浦裕之,藤山和仁
新潟大学農学部研究報告 = Bulletin of the Faculty of Agriculture, Niigata University 63(1), 19-27, 2010-08
… 酵素反応の至適pHは8.0であるが、酵素活性はpH5からpH8の広い範囲で維持された。 …
NAID 120005067421