No452木材含水率试验法.ppt

Introduction to Food Engineering Practice #1 Measurement of Viscosity Practice #2 Evaluation of Centrifugal Pump Practice #3 Measurement of Air Velocity Pressure CNS Moisture Content Measurement No.452 木材含水率試驗法 No.3443 乳品檢驗法 (水分之測定) No.5033 食品中水份之檢驗方法 No.6258 肉及肉製品檢驗法–水分定量法 No.6501 肥料檢驗法 (水分之測定) No.6947 木漿用材水分試驗法 No.7070 香辛料及調味料之檢驗法–水分含量之測定 No.8152 綠 (生) 咖啡水分含量測定法 (基礎參考法) No.8153 綠 (生) 咖啡水分含量測定法 (常用法) …. AOAC International The AOAC International is a non-profit scientific association with headquarters in Gaithersburg, Maryland, USA. It publishes standardized, chemical analysis methods designed to increase confidence in results of chemical and microbiologic analyses. Government agencies and civil organizations often require that laboratories use official AOAC methods. History of AOAC International The AOAC International, informally the AOAC, was founded on 8 September 1884 as the Association of Official Agricultural Chemists, by the United States Department of Agriculture, to establish uniform chemical analysis methods for analyzing fertilizers. In 1965, the AOACs name changed to Association of Official Analytical Chemists to accurately reflect its scope beyond agriculture. In 1991, it was renamed as the AOAC International. AOAC as an Association of Analytical Communities. Accuracy Precision In the fields of science, engineering, industry and statistics, accuracy is the degree of closeness of a measured or calculated quantity to its actual (true) value. Precision, also called reproducibility or repeatability, the degree to which further measurements or calculations show the same or similar results. The results of calculations or a measurement can be accurate but not precise; precise but not accurate; neither; or both. Quantifying Accuracy and Precision Accuracy versus Precision(The Target Analogy) High accuracy, but low precision precision, but low accuracy 魚 腥 草 學名：Houttuynia cordata. 科名：三白草科 (Saururaceae ) 、蕺菜屬 (Houttuynia) 別名：臭嗟草、臭臊草(台灣)、肺形草、側耳根