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To investigate the changes in soil dynamic response around the tunnel periphery under the vibration loads generated by train operation on curved sections, field measurements were carried out to observe void water pressure, water level, and settlement on the ground. Additionally, simulation modeling using MIDAS was employed to simulate and analyze the soil’s dynamic response under the impact of train loads. Based on the track stress diagram combined with the axle weight of the train, the transverse and vertical loads of the track are calculated. The corresponding parameters are entered into the train dynamic load table in the MIDAS/GTS NX dynamic analysis module, so as to simulate the vibration loads of the tunnel. The results show that the application of vibration load is an important reason for the change in pore water pressure during train operation. During the initial stages of train operation, the pore water pressure exhibits a significant increase, followed by a gradual decrease over time. The overall variation follows a seasonal pattern, with the pore pressure increasing as the depth of burial increases. The response of the soil around the tunnel to the vibration of the train is closely related to the location. The closer to the tunnel, the more sensitive the soil is to the vibration of the train, and the greater the amplitude and rate of pore pressure change and vertical deformation in the soil. The variation trend of groundwater level in soil is basically consistent with that of pore pressure, and the groundwater level is proportional to the depth. The dynamic response of the soil at the bottom of the curved tunnel decreases with the increase in the turning radius. The main influence range of the dynamic response is 0~15 m at the bottom of the tunnel. The excess pore water pressure generated by the soil gradually dissipates, and it can be predicted that the vibration of the train will not cause deformation damage to the surrounding soil.

In this study, the effect of chickpea dietary fiber (CDF) concentration (0%, 0.4%, 0.8%, 1.2%, 1.6%, and 2.0%) on emulsion gel properties of myofibrillar protein (MP) was investigated. It was found that the emulsifying activity index (EAI) and emulsifying stability index (ESI) of MP increased with the increasing content of CDF. Moreover, the water- and fat-binding capacity (WFB), gel strength, storage modulus (G’), and loss modulus (G”) of MP emulsion gel also increased with increasing content of CDF. When the concentration of CDF was 2%, the most significant improvement was observed for EAI, breaking force, and WFB (p < 0.05); the three-dimensional gel network structure of the MP emulsion gel was denser and the pore diameter was smaller. The T21 relaxation time of emulsion gel decreased while the PT21 increased significantly with the increasing content of CDF, suggesting that the emulsion gel with CDF had a better three-dimension network. The addition of CDF led to an increased content of β-sheet and reactive sulfhydryl and increased surface hydrophobicity of MP, thus improving the gel properties of the MP emulsion gel. In conclusion, the addition of CDF improved the functional properties and facilitated the gelation of the MP emulsion, indicating that CDF has the potential to improve the quality of emulsified meat products.

The construction of Zhongyuan gas storage group takes the salt layer as the caprock. Therefore, the cementing quality of the sealed salt interval is a key factor in the construction of gas storage. The cement slurry was eroded by the salt gypsum layer during the migration of the salt layer, which affects the basic performance of cement slurry, resulting in the poor cementation quality between cement sheath and salt layer. In addition, the irregular borehole in the salt layer and the expansion of well diameter make the displacement efficiency poor in the cementing process, which restricts the cementing quality of this kind of wells. At present, due to the unsatisfactory cementing quality and low excellent rate of cementing quality in the salt layer during the construction of Wen 23 gas storage, the construction of gas storage cannot be completed as planned. Therefore, in order to ensure the successful construction and service life of gas storage, the cementing technology research of big-thickness salt layer in Zhongyuan Gas Storage Group is carried out.The salt resistant fluid loss reducer and retarder are selected through the project test, and the expansion early strength agent and toughening agent are selected. Through the compatibility research and the evaluation of the performance of cement slurry and the cementation strength of cement stone by the erosion of different salt content, a fresh-water-salt-resistant and ductile cement slurry system suitable for salt rock cementing is formed; In terms of cementing technology, we have developed well hole optimization technology, optimized leakage prevention technology in salt section and supporting high-quality sealing technology in salt layer, formed cementing technology and recommended practices for Wen 23 gas storage, and effectively ensured the primary success rate of cementing in Wen 23 gas storage. The research results of this subject have been successfully applied in 12 wells of Wen 23 gas storage and Wei 11 gas storage. The qualified rate of cementing quality has been increased from 96% to 100% and the excellent rate has been increased from 12% to 83.33%, which meets the requirements of gas storage for salt layer sealing quality and ensures the safe and efficient operation of Zhongyuan Gas Storage Group.

Three-dimensionally (3D) ordered mesoporous β-MnO2-supported Au nanocatalysts (Au/β-MnO2(urea), Au/β-MnO2(NaOH), and Au/β- MnO 2 ( Na 2 CO 3 ) ) with an Au loading of 5 wt.% were prepared by the deposition–precipitation method using urea, NaOH and Na2CO3 as precipitating agent, respectively. The physicochemical properties of the materials were characterized by means of numerous analytical techniques, and their catalytic activities were evaluated for the complete oxidation of CO, benzene, and toluene. It is shown that the nature of precipitating agent had an important influence on the physicochemical properties of the β-MnO2 support, Au nanoparticles, and Au/β-MnO2 catalysts. Among the three Au/β-MnO2 samples, the Au/β-MnO2(NaOH) showed the highest surface atomic ratios of Mn3+/Mn4+, Oads/Olatt, and Au3+/Au0. The loading of gold could greatly modify the reducibility of Au/β-MnO2 via the strong interaction between the gold and the β-MnO2 support, and the Au/β-MnO2(NaOH) sample possessed the best low-temperature reducibility. Gold loading resulted in a significant enhancement in catalytic activity of β-MnO2. The three Au/β-MnO2 catalysts outperformed the Au-free β-MnO2 catalyst, among which the Au/β-MnO2(NaOH) one showed the best catalytic activity (T50% and T100% = 48 and 70 °C for CO oxidation, 200 and 250 °C for benzene oxidation, and 170 and 220 °C for toluene oxidation, respectively). It is concluded that factors, such as the better gold dispersion, higher surface Au3+ and oxygen adspecies concentrations, better low-temperature reducibility, stronger synergistic action between the gold and the support as well as the high-quality 3D ordered mesoporous structure of the support, might be responsible for the excellent catalytic performance of Au/β-MnO2(NaOH).

Nanosized α-MnO2-supported silver catalysts (xAg/nano-MnO2, x = 0–10.0 wt%) were prepared by the incipient wetness impregnation method and characterized by means of numerous analytical techniques. Catalytic activities of the materials were evaluated for the oxidation of CO and benzene. It is shown that the loading of silver on nano-MnO2 could significantly modify the catalytic activities and the catalytic performance of xAg/nano-MnO2 strongly depended upon the Ag loading, among which 5Ag/nano-MnO2 performed the best for the addressed reactions. The excellent performance of 5Ag/nano-MnO2 was associated with the highly dispersed Ag, good low-temperature reducibility, and synergism at the interface of Ag and MnO2 nanodomains.

Au-supported 13X-type zeolite (Au/13X) was synthesized using a common deposition-precipitation (DP) method with a solution of sodium carbonate as a precipitate agent. Further testing was conducted to test for catalytic oxidation of CO. A study was conducted on the effects of different preparation conditions (i.e., chloroauric acid concentration, solution temperature, pH of solution, and calcinations temperature) on Au/13X for CO oxidation. In respect to the catalytic activity, the relationship between different the preparation conditions and gold particles in 13X zeolite was analyzed using X-ray diffraction, TEM and XPS. The activity of Au/13X catalysts in CO oxidation was dependent on the chloroauric acid concentration. From XRD results, a higher chloroauric acid concentration induced larger gold nanoparticles, which resulted in lower catalytic activity. Results revealed that higher temperatures induced higher Au loading, homogeneous deposit, and smaller gold clusters on the support of 13X, resulting in higher CO activity. Furthermore, a pH of 5 or 6 generated greater amounts of Au loading and smaller Au particles on 13X than at a pH of 8 or 9. This may be a result of an effective exchange between Au(OH)2Cl 2 − and Au(OH)3Cl− on specific surface sites of zeolite under the pH’s 5 and 6. The sample calcined at 300°C showed the highest activity, which may be due to the sample’s calcined at 200°C inability to decompose completely to metallic gold while the sample calcined at 400°C had larger particles of gold deposited on the support. It can be concluded from this study that Au/13X prepared from a gold solution with an initial chloroauric acid solution concentration of 1.5 × 10−3 mol·L−1gold solution pH of 6, solution temperature of around 90°C, and a calcination temperature of 300°C provides optimum catalytic activity for CO oxidation.

yAu/SnO2 (y = 1–5 wt%) and 1 wt% Pt- or Pd-doped 3Au/SnO2 catalysts were prepared by the co-precipitation method. It is observed that the 3Au/SnO2 catalyst showed the best performance (T100% = 166 °C). The pretreatment of 3Au/SnO2 in CO obviously decreased the catalytic activity due to the reduction of oxidized gold species to metallic Au0. Pd- or Pt-doping to 3Au/SnO2 brought about a significant enhancement in performance, with the T100% value being 74 and 93 °C, respectively. It is concluded that the oxidized gold species were more active than metallic Au0 and the remarkable improvement in catalytic activity due to Pd or Pt doping was associated with the presence of strong interaction of Pd or Pt with Au.

A parametric study of NOitx emissions has been carried out on a 150 mm2 × 7.3 m tall pilot scale circulating fluidized bed combustor with coals of various ranks, including anthracite, bituminous, subbituminous and lignite, as well as one petroleum coke. Increasing either temperature or excess air was found to increase NOitx emissions significantly in the ranges studied. The effect of staged combustion on NOitx emission depended on the level at which the secondary air was introduced. A reduction of NOitx emission was usually, but not always, observed when secondary air was introduced 3.4m above the base. Limestone addition promoted NOitx formation for high volatile bituminous coal, due to the catalytic effect of limestone on oxidation of volatile nitrogen. However, adding limestone during petroleum coke combustion reduced NOitx emissions. A relationship exists between fuel nitrogen to NOitx conversion and the volatile content of the fuel, with fuels of higher volatile content emitting more NOitx.

In recent years, the shear wall structure has been widely used in the field of modern tall buildings. Especially in large and medium cities. Technical specification for concrete structures of tall building has made some provision to shear wall's design principles, calculation methods and construction measures, but not particular enough or lack of feasibility, Nowadays in project practice, most of the layout of shear wall is mainly depended on the designers' experience. most of the layout of shear wall is mainly depended on the designers' experience. the shear wall structure's quantity and layout is an important factor in influencing the safety and economic of the shear wall structure of large space at low part. If the quantity of shear walls linked with the ground is too small, it is unable to meet security and the application needs because of the lateral deformation; conversely, it will affect the application needs of the building and increase the amount of materials. Through introduction to the optimum design of building in a residential district, the paper discusses the importance of relevant structural system selection in the design of high-rise structures and the measures in design of irregular construction plane. Through the selection and result analysis of the structural system, short limb shear wall is clearly illuminated to be economic structural system for small high-rise building, and it is a feasible method to decrease high-rise structure economic indicator.

Diabetics suffer from an increased incidence of myocardial infarction and are less likely to survive an ischemic insult. Since L-propionylcarnitine (LPC) has been shown to protect against ischemic/reperfusion injury, we hypothesized that LPC may be of even greater benefit to the diabetic heart. Diabetes was induced by i.v. streptozotocin, 60 mg/kg; duration: 12 wks. The chronic effect of LPC was determined by daily i.p. injections (100 mg/kg) for 8 wks. The acute effects of LPC were determined by adding it to the perfusion medium (5 mM) of control and diabetic hearts. Initial cardiac contractile performance of isolated perfused working hearts was assessed by varying left atrial filling pressure. Hearts were then subjected to 90 min of low flow global ischemia followed by 30 min reperfusion. Chronic LPC treatment had no effect on initial cardiac performance in either control or diabetic hearts. Acute addition of LPC to the perfusion medium enhanced pump performance of control hearts, but had no effect in diabetic hearts. Both acute and chronic LPC significantly improved the ability of control and diabetic hearts to recover cardiac contractile performance after ischemia and reperfusion, however, chronic treatment was more effective in diabetic hearts.

The purpose of the present study was to determine whether 15 weeks of dietary fish oil supplementation to Wistar Kyoto (WKY) and stroke-prone spontaneously hypertensive rats (SP-SHR) would alter cardiac contractile performance. Isolated perfused working hearts were used to determine the effects of varying left atrial filling pressures on cardiac pump output and pressure development. In addition, the ability of these hearts to recover cardiac output after a 60-minute period of low-flow ischemia followed by 30 minutes of reperfusion was assessed. Myocardial high-energy phosphate levels and long-chain acylcarnitine content were measured. Fish oil supplementation had no effect on indirect tail-cuff systolic blood pressure of WKY rats, but produced a small decrease in systolic blood pressure of SP-SHR. In response to varying left atrial filling pressures, hearts from WKY rats and SP-SHR exhibited no major differences in aortic flow, left intraventricular diastolic pressure, systolic pressure, positive and negative rate of pressure change per unit of time (dP/dt), or relaxation time; however, coronary flow values were lower in SP-SHR groups relative to respective WKY groups. Fish oil supplementation had no effect on these cardiac parameters. When these hearts were subjected to ischemia and reperfusion, the recovery of cardiac contractile performance was significantly improved in fish oil-fed WKY and SP-SHR groups, compared with their corn oil-fed counterparts. There were no differences in the recovery of the above cardiac hemodynamic parameters between corn oil-fed WKY and SP-SHR. These results provide further support to the hypothesis that dietary fish oil can significantly reduce the mortality risk from cardiovascular disease.

This study determined whether the beneficial effects of exercise training on the diabetic heart previously observed are associated with alterations in ventricular myosin heavy chain (MHC) isoform composition. Diabetes was induced in rats by i.v. streptozotocin. Trained rats were run on a treadmill for 60 min/day, 27 m/min, 10% grade. After 10 wks, ventricular MHC isoenzyme protein composition was analyzed for MHC composition using gel electrophoresis. alpha-MHC and beta-MHC mRNA were determined by Northern and slot blot hybridization techniques. Both protein and mRNA analyses indicated that sedentary control rats exhibited a predominance of alpha-MHC. Sedentary diabetics exhibited a shift to beta-MHC. Exercise trained diabetic rats showed a predominance of beta-MHC. The results indicate that treadmill exercise training of diabetic rat does not prevent the diabetes-induced shift in MHC composition towards the beta-MHC isoform, thus it is unlikely that the beneficial effects of exercise training on the diabetic heart, previously shown, are due to a normalization of the myosin isoform composition.

Replication of human adenovirus type 12 DNA is blocked in abortively infected baby hamster kidney cells. The activity and accumulation of adenovirus 12 DNA polymerase is equivalent in infected hamster and human cell extracts. However, the accumulation of adenovirus type 12 DNA-binding protein is approximately 120-fold lower in extracts from infected hamster cells when compared to infected permissive human cells. This difference in accumulation is not due to replication of viral DNA during productive infection, since this difference is observed in the presence of hydroxyurea. The DNA-binding protein from infected hamster cells retains the ability to bind denatured DNA-cellulose. An adenovirus 5 early region 1 transformed hamster cell line competent to complement the adenovirus 12 DNA replication defect also stimulates accumulation of the DNA-binding protein even when the cells are treated with hydroxyurea. Thus, the reduced expression of the viral DNA-binding protein may play a role in the mechanism of abortive infection of hamster cells by adenovirus 12.

We report the covalent addition of [32P]dCMP to a protein from group A adenovirus 12 (Ad12)-infected human (KB) cells in vitro, using crude extracts. Synthesis of the 60K protein-dCMP complex required a DNA template containing a terminally located adenovirus replication origin; the protein-dCMP bond was alkali-labile but acid-stable. We therefore conclude that this product is the Ad12 terminal protein precursor (pTP)-dCMP initiation complex for DNA replication. Synthesis of Ad12 pTP-dCMP was specific for dCTP but was stimulated by dATP. In contrast to Ad2, the Ad12 initiation reaction required ATP. Antipeptide antiserum targeted to Ad DNA polymerase inhibited Ad12 pTP-dCMP synthesis in vitro, providing evidence that Ad DNA polymerase catalyses dCMP addition to pTP during initiation.