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concentrator without heating. Methoxyamination hydrochloride (130 μL, 20 mg mL-1in pyridine) was added to the samples, and the samples were incubated for 30 min at 80 °C. Then, 150 μL of BSTFA reagent (1% TMCS, v/v) (REGIS Technologies, Morton Grove, USA) was added ...
Heating of benzene solutions of 1 at 80 °C affords RhPh{xant(PiPr2)2} (2). Under the same conditions, toluene gives Rh(m-tolyl){xant(PiPr2)2} (3a) and Rh(p-tolyl){xant(PiPr2)2} (3b) in a 78:22 molar ratio, whereas m-xylene leads to Rh(C6H3-3,5-Me2){xant(PiPr2...
The RM became a dark red-brown solution after 5–15 min of heating. After 17–24 h, when LR-MS indicated complete consumption of SM, the RM was concentrated to give the crude boronate ester. This intermediate was immediately used to prepare the 5, 13, and 14 derivatives without ...
B. HeatingC. HeatedD. To be heat望有详解,谢谢 扫码下载作业帮搜索答疑一搜即得 答案解析 查看更多优质解析 解答一 举报 C.heated 表被动可以补充一下变成完整句子看看:if the water is heated,the water will boil.假如水被加热的话,水很快就会煮开.而原句省略了主谓. A和B选项表主动,不对.D选项是个...
___, liquids can be changed into gases. A.HeatingB.To be heatedC.HeatedD.Heat 相关知识点: 试题来源: 解析 C [解析] 现在分词表主动、正在进行的动作;过去分词表被动、已经完成的动作。对于液体来说是加热的受动者,是被动的,因而选C。它相当于一个状语从句When it is heated,… 注意:选择现在分词还...
The results of the experimental investigations performed on the cement paste samples after heating at temperatures in the range 80–300 °C revealed that: 1. The cement paste used in MIP analyses was initially only partially hydrated. Consequently, the pore size distribution was characterized by two...
city green space syst city hall city heating city history cityhone city hotel city identity city identity system city image city industrial zone city industry buildin city land city land use system city level city lighting system city livelihood citymainwatermeter citymanagement city marketing city mu...
Concept for pre-heating and starting of steam turbines with inlet temperatures of over 650°C 来自 百度文库 喜欢 0 阅读量: 23 申请(专利)号: EP20070002466 申请日期: 2007-02-05 公开/公告号: EP1953351A1 公开/公告日期: 2008-08-06 申请(专利权)人: SIEMENS AKTIENGESELLSCHAFT 发明人: ...
Artificial substrata with controllable heating have proved an important step forward in understanding individual and assemblage responses in terms of their own performance9,13 but the current study takes this a further step forwards, by exploring interactions between species under climate change scenarios....