The application of silica monolith for solid phase extraction

... behaviours of the Sulfite Red S3B adsorption on activated carbon with initial solution concentrations of 20ppm and 40ppm a) Weight of activated carbon: ca 0,3gr b) Weight of activated carbon: ca ... Figure Kinetic behaviours of the Procion Yellow HE-XL adsorption on activated carbon with initial solution concentrations of 20ppm and 40ppm a)Weight of activated carbon: ca 0,3gr b) Weight of activated ... done to figure out the change of adsorbate concentrations in the solution The concentrations of the adsorbate in solid phase (activated carbon) are calculated on the base of material balances...

... frequency of their representation in the stand composition) from each taxon used for the reforestation of the state of reclamation “A” and “B” Fig Tilia cordata Mill and Pinus nigra Arn in the treatment ... analysis of their organs allows the phytogeochemical determination of significances in nutrition realized in connection with the soil conditions created by reclamation Based on the performed leaf ... evaluated One-factor ANOVA was used for the analysis of the growth data With respect to the applied amendment (CCB) the evaluation of the growth vitality of forest tree species plants at the evaluated...

... semi-cylindrical shape, and calculating the sap flux as the average of the measurements made at a height of m on a sample of ten trees at Carrasqueira and at a height of 8.5 m on seven We trees at the ... on accurate determinations of the tree sap flow, which requires determination of sapwood area, mean sapflux density and needle area in a stand to a high degree of accuracy Thus, application of ... temperature and transpi- a crown ration rate; the resistance and capacitance of each compartment are independent of the flux or water potential of the compartment and remain constant during the day...

... of the paste to the fibers, the influence of a combination of fibers and silica fume on the bond strength to reinforcing steel, and the use of silica fume in glass-fiber reinforced concrete The ... the finishing operations required As the amount of silica fume in the concrete increases, so will the effect of the silica fume on finishing The absence of bleed water and the stickiness of concrete ... 8.4.3 Finishing—Procedures for finishing silica- fume concrete are similar to those used for finishing other concrete However, because silica fume concrete does not bleed, the timing of finishing...

... freshly mixed and hardened concretes by use of either epoxy or latex adhesives The requirements and procedures of this guide consist of: • Evaluation of the hardened concrete to determine the proper ... for the application In some applications the design engineer may increase the required pullout value GUIDE FOR EPOXY AND LATEX ADHESIVES CHAPTER 5—USE OF EPOXY ADHESIVES To ensure adequate bonding ... be cleaned of all contaminants and a fresh application of epoxy be applied in the prescribed manner CHAPTER 6—USE OF LATEX ADHESIVES To ensure adequate bonding using latex adhesives, the following...

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... communicative activities to develop speaking skills for 10th graders at Son Tay High School-Hanoi” with the hope to make a little contribution to the quality of teaching and learning speaking skills for ... language texts to introduce into the program It will also influence the types of out -of- class tasks set to encourage the students to interact outside the classroom 1.2.2 Approaches to teaching speaking ... in speaking activities to cheer up the stressful atmosphere; also songs can draw their attention to the main speaking activities Most of the student participated believed that discussion is the...

... ENGLISH SPEAKING SKILL FOR FIRST-YEAR STUDENTS IN FACULTY OF FOREIGN LANGUAGE IN HO CHI MINH UNIVERSITY OF INDUSTRY (VIỆC ÁP DỤNG KỸ THUẬT MÔ PHỎNG TRONG VIỆC CẢI THIỆN KỸ NĂNG NÓI TIẾNG ANH CHO SINH ... English in a foreign language university 18 CHAPTER 2: METHODOLOGY 2.1 Participants and setting of the study The subjects of this study are two groups of first-year students of Faculty of Foreign Language ... cover all the four skills in teaching and learning a foreign language, but focuses merely on speaking skills Methods This study includes the interview and the survey questionnaires The questionnaires...

... activities to improve my teaching speaking at Son Tay High School The above reasons have inspired me to conduct a study on The application of communicative activities to develop speaking skills for 10th ... 10th graders at Son Tay High SchoolHanoi” with the hope to make a little contribution to the quality of teaching and learning speaking skills for Grade 10th at Son Tay High School 2 Aims of the ... for teaching Then comes the literature on teaching speaking with the speaking needs and goals of language students, some approaches to teaching speaking and principles for teaching speaking The...