Paper 3 OCR Chemistry A AS Paper 1 AS Paper 2 Paper 1 Paper 2 Paper 3 Chemistry B (Salters) AS Paper 1 AS Paper 2 Paper 1 Paper 2 Paper 3 Eduqas AS Component 1 AS Component 2 Component 1 Component 2 Component 3 WJEC Unit 1 ...
Past exam papers and mark schemes for AQA, CIE, Edexcel, OCR and WJEC Chemistry GCSEs and IGCSEs
Since this first publication, debate between scientists, regulators and chemical manufacturers has been ongoing and the most recent scientific paper published in 2021 [106] sets out to address common questions and possible misinterpretations of the essential use criteria. Questions such as "Who should ...
Persistent and mobile water contaminants are rapidly developing into a focal point of environmental chemistry and chemical regulation. Their defining param... D Zahn,IJ Neuwald,TP Knepper - 《Analytical & Bioanalytical Chemistry》 被引量: 0发表: 2020年 Screening and prioritising persistent, mobile an...
Non-substrate-like inhibitors of glycosyltransferases are sought after as chemical tools and potential lead compounds for medicinal chemistry, chemical bio... 被引量: 0发表: 0年 503. Dynamic stady of esophagus inflammation (by ^<99m>Tc-PMT) 503. Dynamic stady of esophagus inflammation (by ^Tc...
Poly(2-methoxy-5-methylthio-1,4-phenylene vinylene), PMTPV, and copolymers containing both unsubstituted or 2,5-dimethoxy-substituted and 2-methoxy-5-methy... JI Jin,CK Park,HK Shim - 《Journal of Polymer Science Part A Polymer Chemistry》 被引量: 53发表: 1991年 Optical frequency discrimi...
Kaniskan, H. ümit,Konze, Kyle D.,J Jin - 《Journal of Medicinal Chemistry》 被引量: 19发表: 2015年 Phenomenological Study of the Effect of Microstructural Evolution on the Thermal Fatigue Resistance of Pb-Free Solder Joints Unlike SnPb solders, the thermal fatigue reliability of the Sn-Ag-...
The teacher were thoroughly organised with resources and support for the Year 12 courses in Biology, Chemistry and Mathematics to help guide through the subject content and essays. Highly recommended courses and well presented. Many thanks for all of your help. ...
found that the non-uniformity factor was minimized with the following conditions: temperature of 27/spl deg/C, RPM of 20, pump pressure of 52 psi, etchant flow rate of 6 liters/min, and a 25% solution of the two-component etch chemistry, with the two-components in a 1:3 proportion....
(PMT applied to diatomic molecules). As we can use automatic settings of MTOs paremeters all the time, we don’t need to be bothered with the setting of them. The PMT method is promising since it can connect physics and chemistry, and virtually it can be a very efficient method (...