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K Drift telescope

 Free rolling fast optics telescope


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Scythians 斯泰基 塞種 西古提人

900 BC - 200 AD British museum   Tomb of scythe prince, Buktarma valley, 1200 masl, Google map Herodotus   絲路上的帝國 Biblegeography   哥羅西書 3:11  在此並不分希利尼人、猶太人、受割禮的、未受割禮的、化外人、 西古提人 、為奴的、自主的.惟有基督是包括一切、又住在各人之內。 塞種 塞迦  saka 史記漢書 西域傳: 塞種  ctext 昔匈奴破大月氏,大月氏西君大夏,而塞王南君罽賓。塞種分散,往往為數國。自疏勒以西北,休循、捐毒之屬,皆故 塞種 也。 匈奴列傳 Ctext :塞王 《史記》在《大宛列傳》與《匈奴列傳》中, 詳細 記錄了中亞至天山一帶的塞種(塞王、塞地)狀況。例如,文中記載了月氏西破走塞王,導致塞人南遷越過懸度(今帕米爾高原及克什米爾一帶) Baike Genetic history   Genetics  Nih griffin  ? Scytho-Siberian  world 塞迦 saka  wiki Disappeared? Sarmatians ( 薩爾馬泰 , 奄蔡 史記 ,  Aorsi )and goths YouTube  

calculate pH of phosphoric acid

Question: adding 1/4 teaspoon of 10% phosphoric acid  to 19 litres of water, what will be the pH? Let's go through the calculations step by step. Step 1. Convert mass ( or volume) of 10% phosphoric acid to mole per litre ( mol/L) The above calculation shows that 1/4 tsp of H3PO4 acid is 6.97e-5 mol/L Step 2. Input this value to BATE (or other app) to calculate pH The answer: pH = 4.16, ie too acidic !? If you use pipette instead of teaspoon,  1 drop = 0.05ml. So 1/4 TSP means roughly 25 drops If you actually aim for pH 5.6 (which is optimum pH for mashing), conc will be 2.51 e-6, or 1/100 tsp , 0.044 ml, roughly 1 drop Let's roll back a bit. From  recipes of   BarleyWine , summer rye , hefe Gordon Strong suggested to use 1/4 teaspoon of 10% phosphoric acid, which is targeting pH of 5.5..... Discussion on  homebrewtalk  forum. However using online BF water calc , Sparge pH would be 4.6. but he also added 1 tsp of CaCl2. 2H20. Mash pH change from 5.7 t...

Formwork 模板

流程 Bar bending schedule 圖則 HKHA good practice   目的 重點 斜面 企棟 樓梯 模組內部 測量放線 紮鐵/鋼筋 bar bending Concrete pressure and formwork   Fluid Pressure = Wall height (ft) * 150 pound per cubic feet for example, 10 feet wall is roughly 1500 pound per sq ft.( Psf) Avoid too much pressure   Traditional concrete formwork india Titech jp Ch 1 Housing authority guide  on concrete  Constructor Formwork solutions   模板周轉次數  與成本 安裝模板 formwork: 釘板工序: 企棟 倒石矢 concrete  建造業: 鋼筋屈紮&樓宇結構 樓面陣工藝 筷子廊: 工藝測試: 土木工程 樓宇: 中工測試: 四大常用工具:鎚仔,拉尺,木工筆,線秤(666g) 木釘: 2" x11# Impact force cal 釘板鎚: 木井方 23吋長 10 oz(鎚頭重) 羊角曲尾 有磁石 售賣地點: 黃宏利 三行工具 土牛  中號有磁防滑加長柄 450mm 700克 01776 Dogyu tubular steel handle kariwaku hammer w/magnet 450mm. Amazon jp And magnetic one piece panel with hanging hardware Smooth  03799, anti slip (waffle)03800 rakuten 20 oz (570g)hickory 合桃木 木柄鎚 larry huan Toolguyd  damping ratio: Stanley fatmax anti vibe any good?see here Choosing a hammer,it's matter of pers...