On an artificial core of permeability to water 1.33 μm 2 and 99 mm long after injection and adequate gelation of 2 PV of 60A 1, breakthrough pressure of 8.16 MPa, residual resistance factor of 1 000 , and water plugging rate of 99.3% are observed;
The breakthrough pressure, p_t, is determined for artificial cores of different permeability, k(0.1—1,3—4,11—13 μm~2), having plugged by four experimental cilicic gelling fluids composed of 4%,6%,8%, and 10% water glass, respectively, plus 10% HCl.
? The reaction mechanism of synthetic Monazite decomposed by CaO with NaCl additives was studied by means of XRD and TGDTA. The results show that the chemistry reaction by CaO is 3CaO+2REPO4=Ca3(PO4)2+RE2O3 at the temperature of 620～700?
The quality of the wastewater from synthetic diamond production is analyzed, and a method of using oxygen-bearing oxidizer to remove Mn2+ from the wastewater from synthetic diamond production is proposed.
Finally, experimental results show that this method can extract manmade object in infrared image under conditions of complicated background and low contrast, and the correct detection ratio is more than 95%.
More particularly, Genetic Algorithms, Artificial Neural Networks and Fuzzy Logic methods seem to be the most promising tools to speed up and optimize the search for new leads and focused libraries.
Chitosan-sodium alginate-hemoglobin microcapsules are expected to become an artificial oxygen-carrying therapeutic agent with sustained release for intravenous injection.
It is also discovered that the major approaches to artificial intelligence in history, the structuralism, functionalism and behaviorism, can harmoniously be unified within the framework of the mechanism approach and no longer be contradictory.
Tracking the events in the coverage of wireless sensor networks based on artificial neural-networks algorithms
This paper presents a distributed self-spreading deployment algorithm (SOMDA) for mobile sensors based on artificial neural-networks self-organizing maps algorithm.
We consider Synthetic Aperture Radar (SAR) in which backscattered waves are
The details of the synthetic sequence followed for the preparation of all these compounds having almost all the structural features required for a compound to act as a potent insulin sensitizing agent are reported.
A general and convenient synthetic approach for these novel trisubstituted thiazoles is reported here.
The alkylisothiocyanates required in this synthetic sequence are prepared using a best combination of reported methods.
New Synthetic Method for Industrial Manufacture of Glutaric Dialdehyde
Frequent natural disasters and man-made catastrophes have threatened the safety of citizens and have attracted much more attention.
The problem of spacecraft protection against the impact effect of meteorites and man-made (technogenous) particles has become especially topical in connection with the necessity of long-duration flights in space.
Nonstochastic heritable cell lethality in the practice of biotesting of man-made pollutants as inducers of aftereffects
The main forms of the impact of man-made lakes on terrestrial fauna populations and communities are considered.
Peculiarities of the effect of man-made lakes on zoocomplexes in the upper and lower pools of hydraulic structures are analyzed.
We report the first experimental observation of a nonlinear laser effect, stimulated Raman scattering (SRS), in manmade diamond grown from the gaseous phase by the chemical vapor deposition (CVD) technique.
Several strategies on 3D modeling of manmade objects
Several different strategies of 3D modeling are adopted for different kinds of manmade objects.
The objective of the study on basic land price using the optimal path algorithm is to decrease the manmade error, enhance automatization, avoid make inconvenience by roadblock object.
People living in developed countries are exposed to over 100 000 chemically pure, manmade substances (and an immense number of their combinations).