Three cyclic waterflooding programs were designed to compare with the original program of block Bao14 according to the characteristics with residual oil. The results showed that the recovery percentage of three designs increased in different level. The fourth design was best. The stage cumulative incremental oil production was 16.07×104t and recovery ratio improved 2.14% than that of original design
Abstract Aim To identify microRNAs (miRs) involved in the regulation of skeletal muscle mass. For that purpose, we have initially utilized an in silico analysis, resulting in the identification of miR‐29c as a positive regulator of muscle mass. Methods miR‐29c was electrotransferred to the tibialis anterior to address its morphometric and functional properties and to determine the level of satellite cell proliferation and differentiation. qPCR was used to investigate the effect of miR‐29c overexpression on trophicity‐related genes. C2C12 cells were used to determine the impact of miR‐29c on myogenesis and a luciferase reporter assay was used to evaluate the ability of miR‐29c to bind to the MuRF1 3′UTR. Results The overexpression of miR‐29c in the tibialis anterior increased muscle mass by 40%, with a corresponding increase in fibre cross‐sectional area and force and a 30% increase in length. In addition, satellite cell proliferation and differentiation were increased. In C2C12 cells, miR‐29c oligonucleotides caused increased levels of differentiation, as evidenced by an increase in eMHC immunostaining and the myotube fusion index. Accordingly, the mRNA levels of myogenic markers were also increased. Mechanistically, the overexpression of miR‐29c inhibited the expression of the muscle atrophic factors MuRF1, Atrogin‐1 and HDAC4. For the key atrogene MuRF1, we found that miR‐29c can bind to its 3′UTR to mediate repression. Conclusions The results herein suggest that miR‐29c can improve skeletal muscle size and function by stimulating satellite cell proliferation and repressing atrophy‐related genes. Taken together, our results indicate that miR‐29c might be useful as a future therapeutic device in diseases involving decreased skeletal muscle mass.
Electrohydrodynamic jet (E-jet) deposition technique was used to prepare thin film porous electrodes for all-solid-state electrochemical supercapacitors. The performance of thin film graphene/PANI electrodes separately prepared by E-jet deposition and brush-coating were comparatively studied in supercapacitors. Results show that the specific capacitance of the supercapacitor by E-jet deposition can reach 228F·g -1 at 0.5A·g -1 and remain 92% after 1000 charge-discharge cycles. Compared to those electrodes made by traditional brush coating techniques, the capacitance and cycling stability of the supercapacitors in this work were respectively increased by 11% and 7%, means that E-jet deposition can be an ideal technique for fabrication of high performance supercapacitor electrodes.
In this paper, graphene nanosuspension was spray deposited using electrohydrodynamic atomization (EHDA) technique, and the polydimethylsiloxane (PDMS) was used as the substrate during the EHDA process. The effect of the PDMS substrate before and after oxygen plasma treatment on the characteristics of EHDA was examined. A cone-jet mode of the EHDA of graphene nanosuspension was obtained using the oxygen plasma treated PDMS substrate. In addition graphene films were deposited on the oxygen plasma treated PDMS at different working distances. The lowest sheet resistance of the graphene films is 127Ω·sq -1 . Furthermore, graphene lines at the range of 30μm-170μm were fabricated using the template assisted EHDA deposition method.
Abstract. In this paper, high oil-absorbing resin is prepared, using microcrystalline cellulose as base material, and acrylate as grafting monomer. Effect of mass ratio of microcrystalline cellulose/monomer, the amount of cross-linking agent, initiator dosage, reaction temperature, and reaction time on oil-absorbing properties of the products is investigated. The optimized conditions are as followed: reaction time 6 hours, reaction temperature 70 °C, mass ratio of microcrystalline cellulose to monomer 1:1.5. The oil absorbing ratio of the product prepared under these conditions is up to 12.9 g/g for toluene, and 14.6 g/g for kerosene oil.
This paper mainly enumerated several kinds of base oil which all have a good biodegradation, such as vegetable oil, synthetic ester, poly-alpha-olefin, polyethylene glycol , introduced their performances, functions, the research status and the application prospect in the cutting fluid and brings forward the direction of the metal cutting fluid's development.
With the increase in the use of recycled aggregate concrete (RAC), it is necessary to clearly understand its behavior and characteristics. In this paper, experimental study on compressive strength of RAC with same water/cement ratio is conducted. Firstly, influence of recycled coarse aggregate contents on cube compressive strength of RAC is studied. Secondly, experiment on time-dependent strength developing process of RAC is conducted with different solidification ages. Finally, based on above experimental investigations, empirical formula for compress strengths of RAC with different ages is presented. The result of this paper is helpful to theoretical analysis and practical engineering design of RAC structures.
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