Preparation techniques

The main aims of this research are: To determine the phase inversion temperatures for the formation of oil-in-brine nanoemulsions at various salt concentrations using conductivity measurements; To prepare the nano-emulsions at PIT points, and study their stability by measuring their droplet size, polydispersity and size distribution using dynamic light scattering technique; To confirm the DLS results using Cryo-SEM technique;...

324p runthenight07 01-03-2023 8 4   Download

The focus of this study is to investigate its optical and conductive properties under different conditions of doping environments, temperature and polymerization conditions. Optical characterization technique such as UV-Visible spectroscopy is developed to carry out the investigation. The developed nanofibers have been demonstrated to possess optical and conductive properties to be dependent on doping variables. Study of these optical properties could prove very useful in the development of electrochromic devices and gas sensors.

103p runthenight07 01-03-2023 8 3   Download

My study is about to help the first year English majored students at Hai Phong Management and Technology University improve their speaking skill through extra- techniques and to prepare for them to the basic knowledge of speaking skill with higher requirement for the levels.

76p trinhthamhodang10 16-03-2021 36 6   Download

Develop a rapid and simple method for analysis of multi-residue pesticides, including organophosphate, organochlorine, carbamate, and pyrethroid compounds in soil, with sample preparation based on QuEChERS technique and determination by GC-MS.

26p capheviahe26 25-01-2021 32 4   Download

The current challenges related to safety, security and economic efficiency lead to the consolidation of the level of education and training of merchant marine officers, through the interdependence and diversification of the curricula in the world economy of shipping, finance of the maritime industry and the specialized labour market.

9p christabelhuynh 04-06-2020 16 1   Download

In this article, magnetically nanoparticles (MNPs) of CuFe2O4 were prepared and characterized using Fourier transform infrared spectroscopy, scanning electron microscopy, X-ray diffraction and transmission electron microscopy techniques.

10p tocectocec 25-05-2020 16 0   Download

In the first lesson of inorganic chemistry lab, preparing and testing solutions are two basic tasks needed to perform well. Dissolving a solid solute in the solvent or diluting the stock solution (a dilution series by using two techniques that are making parallel dilutions and serial dilutions) is to prepare solution with desired concentration of solute or desired volume.

11p suplo28475858 24-05-2020 37 3   Download

The study is finding out appropriate techniques for students at Hai Phong Private University to improve their speaking skill and to prepare for them to the basic knowledge of speaking skill with higher requiremeEnglish majors at HPUnt for the next graders. The expectation is that the first year can consider speaking English as their favorite activity.

48p queencongchua3 26-09-2019 27 6   Download

The research objective of the dissertation completes the technological process of modulating super oxidation solution, thereby manufacturing equipment to suit Vietnamese conditions and applying this solution to disinfect hospital wastewater.

25p xacxuoc4321 11-07-2019 29 4   Download

Epoxide hydrolase (EC 3.3.2.3) in plants is involved in the metabolism of epoxy fatty acids and in mediating defence responses. We report the cloning of a full-length epoxide hydrolase cDNA (BNSEH1) from oilseed rape (Brassica napus) obtained by screening of a cDNA library prepared frommethyl jasmonate induced leaf tissue, and the5¢-RACE technique. The cDNA encodes a soluble protein containing 318 amino acid residues.

8p tumor12 22-04-2013 34 3   Download

Membrane proteins are highly underrepresented in structural data banks due to tremendous difficulties that occur upon approaching their structural analysis. Inefficient sample preparation from conventional cellular expres-sion systems is in many cases the first major bottleneck.

13p inspiron33 25-03-2013 44 4   Download

Previous preparations of the Na + F1F0-ATP synthase solubilized by Triton X-100 lacked some of the membrane-embedded motor subunits [Reidlinger J&Mu¨ller V (1994) Eur J Biochem233, 275–283]. To improve the subunit recovery, we revised our purification protocol. The ATP synthase was solu-bilized with dodecylmaltoside and further purified to apparent homogeneity by chromatographic techniques.

8p galaxyss3 19-03-2013 34 3   Download

Complexometric titrations many metals form complex with a ligand: Cu++ + NH3 ⇔ Cu(NH3)++ Cu(NH3)2+ + NH3 ⇔ Cu (NH3)22+ Cu (NH3)22+ + NH3 ⇔ Cu (NH3)32+ Cu (NH3)32+ + NH3 ⇔ Cu (NH3)42+ Kf1 Kf2 Kf3 Kf4 Zn (NH3) complexes vs lg NH3 α .• theoretically could titrate Zn with ammonia • stepwise Kf very similar • difficult to know stoichiometry • to ensure all one form, need excess NH3 • titration never gives good equivalence point • can’t use monodentate ligand to titrate metals Titrations with EDTA • • • • use multidentate ligands e.g.

13p doilan 26-01-2013 42 3   Download

-Systematic and random error -Accuracy vs precision -Significant figures -Average and standard deviations ENVI 15 - Analytical Chemistry Lecture 2 Quality Assurance Quality Assurance/Quality Control (QA/QC) Review Harris Chapter 5 A program to produce high quality data with known uncertainty. ENVI 15 - Analytical Chemistry Lecture 2 .

11p doilan 26-01-2013 72 5   Download

The aim of the study was to investigate the crystallization kinetics and solidification behaviour of Fe60Co8Mo5Zr10W2B15 bulk glass forming alloy. The solidification behaviour in near-equilibrium and non-equilibrium cooling conditions was studied. The eutectic and peritectic reactions were found to exist in the solidification sequence of the alloy. The bulk metallic glass formation was achieved by using two methods: quenching from the liquid state and quenching from the semi-state.

140p dontetvui 21-01-2013 83 12   Download

Acryl sur toile 50/70 cm Etape 1 Choisir la photo. Etape 2 Cadrer la photo dans les mêmes proportions que la toile (ici 4,5 / 6,3 cm) 5 minutes Etape 3 Préparer la toile avec un jus brun (ou d'une autre couleur selon que l'on veut donner une ambiance "chaude" ou "froide") Le "jus" est donc de la peinture diluée. Il permet d'unifier les teintes et d'éviter les

8p moi_tim 02-10-2012 46 3   Download

Je reviens vous voir avec ce pas à pas d'un Portrait au Stylo bille couleur (cette fois ). Il me tient particulièrement à coeur puisque c'est celui de ma belle Aurore ! La première étape est toujours la même: Reproduction et préparation du modèle par les techniques de chacun. ( à main levée, avec les carreaux, retroprojecteur ...) Ce qui importe, c'est d'arriver sur le Canson de votre format (ici le A4) avec les lignes maîtresses de votre sujet :

10p moi_tim 02-10-2012 75 4   Download

J'ai réellement découvert le plaisir de dessiner en balade en préparant mes cours de dessin pour "Randocroquis". Si vous avez essayé au moins une fois vous savez ce que c'est et que ça ne ressemble en rien à des cours classiques en extérieur ... Une petite démonstration sur un paysage typiquement marseillais : les calanques. d'abord, on REGARDE:

5p moi_tim 02-10-2012 42 2   Download

Préparation de la photo de référence 1. La première chose à faire est de choisir sa photo de référence. C'est ce qui va nous servir de modèle pour notre colo. Choisissez de préférence une image de très bonne résolution, et avec un contraste suffisant. Je conseille aux débutants d'éviter les photos avec trop de zones difficiles (ce que j'appelle zones difficiles, ce sont les oreilles, dents, barbes/moustaches, et de manière générale les images avec trop d'expressions de visage).

18p moi_tim 02-10-2012 74 4   Download

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Tungsten Oxide Nanorods Array and Nanobundle Prepared by Using Chemical Vapor Deposition Technique

5p sting10 07-03-2012 46 2   Download