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Methane storage performance of a series of metal‐organic frameworks (MOFs) has been thoroughly examined over a wide pressure range up to 750 bar. Based on volumetric adsorption measurements, crystal structure and porous texture characterization, excess, total and working adsorption capacities, and heat of adsorption as functions of pressure have been evaluated. It has been found that the use of MOFs demonstrates a significant advantage in methane storage capacity over compressed gas, and the Gain can reach 300% to 400% depending on the pressure‐temperature operating conditions. However, the benefit of adsorption storage drops with increasing pressure. Even for the best MOF adsorbent, this methane storage method becomes technologically unreasonable above 280 bar. The data obtained allowed us to conclude that conventionally reported excess adsorption does not give a complete picture of the effectiveness of MOFs. Besides high specific surface area, optimal density of the skeleton and moderate heat of adsorption are required for the best storage performance. [ABSTRACT FROM AUTHOR]

The algorithm of operation of a software package supporting decision making on the efficiency and safety of medical use of thermolabile blood components is described. The algorithm involves collection, analysis, and processing of data obtained at the stages of collection, transportation, storage, and quality monitoring of blood components. The software package uses a mivar expert system. Examples are given of the information interaction between the software complex and devices used to monitor the temperature parameters of the technological processes that can significantly affect the quality of thermolabile blood components. [ABSTRACT FROM AUTHOR]

Rule-based production expert systems have been used in medicine for a long time. The article shows how a mivar expert system can be used for the diagnosis of diabetes mellitus. Development of such a system is described. It involves creating a knowledge base in the form of a mivar net of parameters and rules, which is then entered in Wi!Mi to obtain the parameters and carry out the diagnosis. A prototype of the mivar knowledge base was created in the form of tables containing 62 parameters and 27 rules. In the future, evolution of the mivar knowledge base should lead to its growth. [ABSTRACT FROM AUTHOR]

Hydrogen adsorption ability is a key parameter characterizing advanced porous materials. Herein, the influence of platinum catalyst on the interaction of Cu-BTC with hydrogen is thoroughly investigated using volumetric measurements, calorimetric titration, XRD, and IR- and EPR spectroscopy. The first hydrogen adsorption by the Cu-BTC + Pt/C composite leads to an irreversible chemical reaction related to the formation of structural defects during synthesis. This process results in a partial reduction of Cu2+ to Cu0 and is accompanied by a decrease in the specific surface area and the appearance of additional mesopores. The following hydrogen adsorption–desorption cycles are completely reversible and reproducible. Besides, the Pt-containing material maintains a positive trend in excess adsorption up to ultra-high pressures in contrast with pristine Cu-BTC. Above 300–400 bars, it demonstrates a significant superiority in hydrogen capacity over the catalyst-free MOF. The possible nature of such a peculiar phenomenon is suggested. [ABSTRACT FROM AUTHOR]

Porous chromium(III) oxoterephthalate MIL-101 possesses an MTN zeolite-type framework with tetrahedral micropores (diameter ∼0.8 nm) and two types of mesopores (diameter ∼3.0 and 2.8 nm, respectively). The hybrid MIL-101/Pt/C composite materials were produced by a bridge building technique by grinding of ternary mixtures of MIL-101, glucose, and Pt-catalyst, followed by a bridge formation via a carbonization of glucose at 160 °C. The hydrogen adsorption properties of porous materials were investigated at pressures up to 1000 bar. Excess adsorption isotherms measured volumetrically at temperatures of 81 and 298 K evidence a remarkable effect of the catalyst on the material behaviors under high hydrogen pressure. There is no saturation at room temperature within the studied pressure range as the excess hydrogen sorption capacity increases gradually with pressure and reaches 1.5 wt.%instead of maximum 0.4 wt.% for the pristine MIL-101. The maximum total H2 uptake at 298 K is estimated to be 6.1 wt.% that leads to a shift of the upper limit of the efficiency of the storage system from 25 to 250 bar as compared with the unmodified metal-organic framework. The results obtained demonstrate feasibility of advanced high-pressure hydrogen storage systems based on hybrid technology. [ABSTRACT FROM AUTHOR]