Preparation of Certified Reference Materials of Sillimanite for Chemical Composition Analysis
Yankuang ceshi, 2017 With an increasing utilization of sillimanite, some reference materials of sillimanite for chemical composition have been developed in countries such as the UK, South Africa and Japan.
XU Chun-xue +5 more
doaj +1 more source
The certification of the absorbed energy (30 J nominal) of Charpy V-notch reference test pieces: ERM®-FA013bj [PDF]
, 2012 This certification report describes the processing and characterisation of ERM®-FA013bj, a batch of Charpy V-notch certified reference test pieces certified for the absorbed energy (KV).
DEAN Alan +2 more
core +1 more source
Certification of Charpy V-Notch Reference Test Pieces of 30 J Nominal Absorbed Energy - Certified Reference Material ERM®-FA013bf [PDF]
, 2010 This certification report describes the processing and characterisation of ERM®-FA013bf, a batch of Charpy V-notch certified reference test pieces. Sets of five of these test pieces are used for the verification of pendulum impact test machines according
LAMBERTY MARIE ANDREE +2 more
core +1 more source
Preparation of Reference Materials GBW10010a for Rice Component and Data Characteristics
Yankuang ceshi, 2020 BACKGROUND With the increased attention paid for the construction of ecological civilization, a comprehensive survey of natural resources is imperative, and new requirements for biological reference materials have also been put forward.
YANG Rong +4 more
doaj +1 more source
Quality certification, firm performance and organizational structre in spanish hotel industry
Intangible Capital, 2013 Purpose: Quality certification helps companies to improve efficiency and performance. The aim of this study is to analyze the differences between certified and non-certified hotels regarding the implementation of quality management practices, the ...
Eva María Pertusa Ortega +4 more
doaj +1 more source
The certification of the absorbed energy (120 J nominal) of Charpy V-notch reference test pieces for tests at 20 °C: ERM®-FA016bg [PDF]
, 2013 This certification report describes the processing and characterisation of ERM®-FA016bg, a batch of Charpy V-notch certified reference test pieces certified for the absorbed energy KV (= energy required to break a V-notched test piece using a pendulum ...
DEAN Alan +2 more
core +1 more source
Стандартные образцы, 2017 Introduction. The results of development of a certified reference material (CRM) of mineral composition of natural water are presented. A solution prepared from the material of the CRM specimen imitates mineral composition of natural surface water.
Liudmila I. Gorjaeva, Elena L. Lebedeva
doaj +1 more source
Awareness, Access and Utilization of Certified Seeds by Rice Farmers in Ebonyi State
Journal of Agricultural Extension, 2023 The study assessed the awareness, access and utilization of certified seeds by rice farmers in Ebonyi State. One hundred and Twenty respondents were selected for the study using a multi-stage random sampling procedure.
Chibuzo Uzoma Izuogu +8 more
doaj +4 more sources
De-commoditizing Ethiopian coffees after the establishment of the Ethiopian Commodity Exchange : an empirical investigation of smallholder coffee producers in Ethiopia [PDF]
, 2019 The repercussions of reforming an agricultural market are mainly observed at the most vulnerable segment of the value chain, namely, the producers. In the current commodity market created with trade through the Ethiopian Commodity Exchange (ECX), coffee ...
D'Haese, Marijke +3 more
core +1 more source
Approximability and proof complexity
, 2012 This work is concerned with the proof-complexity of certifying that optimization problems do \emph{not} have good solutions. Specifically we consider bounded-degree "Sum of Squares" (SOS) proofs, a powerful algebraic proof system introduced in 1999 by ...
O'Donnell, Ryan, Zhou, Yuan
core +1 more source