A routine for estimating the solubility of methane in pure water or NaCl brines by using the Texas Instruments TI-59 calculator; with tables

1980 ◽  
Author(s):  
Nicholas John Susak ◽  
K.A. McGee
Keyword(s):  
Pure Water

Decoration of specific sites on freeze-fractured membranes

1978 ◽  
Vol 36 (2) ◽  
pp. 140-141
Author(s):  
H. Gross ◽  
H. Moor
Keyword(s):  
Pure Water ◽  
Freeze Fracture ◽  
Chemical Properties ◽  
Surface Forces ◽  
Sulfate Pentahydrate ◽  
Copper Sulfate Pentahydrate ◽  
Physico Chemical ◽  
Water Of Hydration ◽  
Small Container ◽  
Binding Forces

Fracturing under ultrahigh vacuum (UHV, p ≤ 10-9 Torr) produces membrane fracture faces devoid of contamination. Such clean surfaces are a prerequisite foe studies of interactions between condensing molecules is possible and surface forces are unequally distributed, the condensate will accumulate at places with high binding forces; crystallites will arise which may be useful a probes for surface sites with specific physico-chemical properties. Specific “decoration” with crystallites can be achieved nby exposing membrane fracture faces to water vopour. A device was developed which enables the production of pure water vapour and the controlled variation of its partial pressure in an UHV freeze-fracture apparatus (Fig.1a). Under vaccum (≤ 10-3 Torr), small container filled with copper-sulfate-pentahydrate is heated with a heating coil, with the temperature controlled by means of a thermocouple. The water of hydration thereby released enters a storage vessel.

Characteristics of Negative Lightning Impulse Breakdown Voltage in Pure Water

2018 ◽  
Vol 138 (8) ◽  
pp. 441-448 ◽  
Author(s):  
Norimitsu Takamura ◽  
Nobutaka Araoka ◽  
Seiya Kamohara ◽  
Yuta Hino ◽  
Takuya Beppu ◽  
...  
Keyword(s):  
Breakdown Voltage ◽  
Pure Water ◽  
Lightning Impulse

Combined Buoyancy and Marangoni Convection in Pure Water

1999 ◽  
Vol 26 (5-6) ◽  
pp. 584-596 ◽  
Author(s):  
K. Sundaravadivelu ◽  
Prem Kumar Kandaswamy
Keyword(s):  
Marangoni Convection ◽  
Pure Water

PEMANFAATAN ABU PEMBAKARAN LIMBAH PADAT INDUSTRI CHLOR ALKALI SEBAGAI ADSORBEN PADA PENGOLAHAN LIMBAH CAIRNYA

2008 ◽  
pp. 19-25
Author(s):  
Sumingkrat Sumingkrat ◽  
Hartini Hartini ◽  
Adrian Yusuf
Keyword(s):  
Solid Waste ◽  
Pure Water

Lim bah industri klor alkali termasuk limbah 83 dari sumber yang spesifik. Pembakaran lirnbah padat industri kimia terpadu, yang memproduksi kaustik soda, VCM dan PVC akan menghasilkan abu. Limbah cair media proses polimerisasi PVC setelah pengendapan disebut spent pure water (SPW). Abu sisa pernbakaran, Solid Waste /ncenerator (SWI) ini dapat dimanfaatkan sebagai adsorben  untuk SPW. Sesuai dengan model Freundlich isoterm, SW! mempunyai daya adsorpsi terhadap biru metilen lebih baik dari pada karbon aktif, dan mampu menurunkan turbiditas SPW sampai sekitar 95%.

Solution chemistry effects on the solvation shell of metal ions

2020 ◽  
Author(s):  
Xiangwen Wang ◽  
Dimitrios Toroz ◽  
Seonmyeong Kim ◽  
Simon Clegg ◽  
Gun-Sik Park ◽  
...  
Keyword(s):  
Metal Ions ◽  
Pure Water ◽  
Solvation Shell ◽  
Solution Chemistry ◽  
Chemical Characteristics ◽  
Velocity Autocorrelation Function ◽  
Ionic Solvation ◽  
General Terms ◽  
Alkaline Earth Metal Ions ◽  
Wide Range

<div> <p>As natural aqueous solutions are far from being pure water, being rich in ions, the properties of solvated ions are of relevance for a wide range of systems, including biological and geochemical environments. We conducted ab initio and classical MD simulations of the alkaline earth metal ions Mg<sup>2+</sup> and Ca<sup>2+</sup> and of the alkali metal ions Li<sup>+</sup>, Na<sup>+</sup>, K<sup>+</sup> and Cs<sup>+</sup> in pure water and electrolyte solutions containing the counterions Cl<sup>–</sup> and SO<sub>4</sub><sup>2–</sup>. Through a detailed analysis of these simulations, this study reports on the effect of solution chemistry (composition and concentration of the solution) to the ion–water structural properties and interaction strength, and to the dynamics, hydrogen bond network, and low-frequency dynamics of the ionic solvation shell. Except for the ion–water radial distribution function, which is weakly dependent on the counter-ions and concentrations, we found that all other properties can be significantly influenced by the chemical characteristics of the solution. Calculation of the velocity autocorrelation function of magnesium ions, for example, shows that chlorine ions located in the second coordination shell of Mg<sup>2+</sup> weaken the Mg(H<sub>2</sub>O)<sub>6</sub><sup>2+</sup> hydration ‘cage’ of the cation. The result reported in this study suggest that ionic solvation shell can be significantly influenced by the interactions between other ions present in solution ions, especially those of opposite charge. In more general terms, the chemical characteristics of the solution, including the balance between ion-solvent and ion-ion interactions, could result in significant differences in behavior and function of the ionic solvation shell.</p> </div>

INTENSITAS ASUPAN GIZI DALAM MENGEMBANGKAN KESEHATAN ANAK USIA 5-6 TAHUN DI TK UMMI ERNI DESA PEMATANG JOHAR

2019 ◽  
Vol 7 (2) ◽  
Author(s):  
Reka Indriani ◽  
Mesiono Mesiono ◽  
Sapri Sapri
Keyword(s):  
Rapid Development ◽  
Pure Water ◽  
Student Parents ◽  
Interview Method ◽  
Descriptive Research ◽  
Children Nutrition ◽  
Children Health ◽  
Class B ◽  
Quantitative Descriptive ◽  
The Right

<p><em>When children are in a process of growth and rapid development, parents and young people should pay atantion to the health and health of children so that the children can grow and develop according to their age.The purpose of this research is to identify: (1). The children nutrition 5-6 years old, (2). The children health development 5-6 years old, (3). The alternative to protect children health. This research is a quantitative descriptive research. The participants of this research which are include the principal, teacher, and the student parents at class B who is 5-6 years old. In process of collecting the data the researcher used interview method, observation, and documentation. From the research we can conclude 1).Nutrition or food that often given to the children is just four healthy five perfect foods, 2).The children in TK Ummi are the children who have healtiness, 3). The alternative that can be commited to protect the children health is do the practice, make the children common to throw the rubbish in the right place,  check the children nail, stock the pure water, set many dustbins and make a common to wash their hand before eating.</em></p>

Modern opportunities for preparation of ultra-pure water for feeding high-performance boiler plants

2020 ◽  
pp. 74-84
Author(s):  
A.A. Filimonova ◽  
◽  
N.D. Chichirova ◽  
A.A. Chichirov ◽  
A.A. Batalova ◽  
...  
Keyword(s):  
Gas Turbine ◽  
Gas Turbines ◽  
High Performance ◽  
Waste Heat ◽  
Pure Water ◽  
Combined Cycle ◽  
Feed Water ◽  
Operational Characteristics ◽  
Treatment Equipment

The article provides an overview of modern high-performance combined-cycle plants and gas turbine plants with waste heat boilers. The forecast for the introduction of gas turbine equipment at TPPs in the world and in Russia is presented. The classification of gas turbines according to the degree of energy efficiency and operational characteristics is given. Waste heat boilers are characterized in terms of design and associated performance and efficiency. To achieve high operating parameters of gas turbine and boiler equipment, it is necessary to use, among other things, modern water treatment equipment. The article discusses modern effective technologies, the leading place among which is occupied by membrane, and especially baromembrane methods of preparing feed water-waste heat boilers. At the same time, the ion exchange technology remains one of the most demanded at TPPs in the Russian Federation.

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