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The moisture induced stress test is used to simulate the high-temperature dynamic water scouring environment to evaluate the hydrothermal sensitivity of steel slag asphalt mixture. Through dynamic modulus test, triaxial repeated load creep test and indirect tensile fatigue test, the effects of high temperature dynamic water scouring on the mechanical properties, creep properties and fatigue properties of steel slag asphalt mixture are studied. The dynamic modulus master curve, permanent deformation viscoelastic mechanical model and stress fatigue equation of three kinds of steel slag steel slag asphalt mixture before and after high temperature dynamic water scouring are constructed. The results show that after high temperature dynamic water scouring, the dynamic modulus and fatigue life of steel slag asphalt mixture decrease, and the permanent deformation increases. The dynamic modulus master curve, permanent deformation viscoelastic model and stress fatigue equation of steel slag asphalt mixture are well fitted. [ABSTRACT FROM AUTHOR]

In order to elucidate the effects of low-temperature stress on the photosynthetic and stomatal properties of strawberry leaves during the flowering phase, the perennial strawberry cultivar 'Selva' was selected as the experimental material. The environmental control experiment was designed and conducted at Nanjing University of Information Science and Technology (NUIST) with Venlo greenhouse and artificial climate chamber in 2022. Two low temperature levels (15°C/5°C, 20°C /10°C) were set, and each of them represented day temperature with night temperature. Treatment T1 and T2 were used to distinguish them. The duration of low temperature was set at 3d, 6d, and 9d. The plants grown in the greenhouse with temperature set at 25°C/15°C were used as the control group (CK). Photosynthetic parameters and stomatal indices were determined for the leaves. The results showed that: (1) low temperature stress significantly inhibited the photosynthesis of strawberry, with the intensification of low temperature, the maximum net photosynthetic rate (Pnmax), light saturation point (LSP), stomatal conductivity (Gs), transpiration rate (Tr) gradually decreased, while light compensation point (LCP), dark respiration rate (Rd), intercellular CO2 concentration (Ci), stomatal limit (Ls) and water use efficiency (WUE) tended to increase. The main cause of the reduced photosynthetic rate was stomatal restriction. (2) Low temperature stress reduced the content of chlorophyll a, chlorophyll b, total chlorophyll content (a+b) and carotenoids in leaves. However, as the duration lengthened, the photosynthetic pigment content increased slightly, although it remained significantly lower than CK. (3) Low temperature stress had a particularly significant effect on leaf stomatal characteristics, i.e. the stomatal length, stomatal width, stomatal open degree, stomatal perimeter, stomatal area and stomatal opening ratio, which all decreased significantly with the decrease of temperature and the increase of the duration. Stomatal density tended to decrease but not significantly. This study showed that low temperatures reduced the stomatal size and the chlorophyll content, inhibiting the photosynthetic capacity of the leaves during the flowering stage. [ABSTRACT FROM AUTHOR]

To deal with the failure problem of statistical average processing based on multiple single-point positioning points in the case of multiple targets, this paper presented a new multi-target location method by position information field. Firstly, this algorithm analyzed the location precision of measuring two-dimensional direction method for aerial observation platform to emitter on the ground, and obtained the covariance matrix. Then, the algorithm got the position information field function of the emitter through the choice of different kernel function. At last, this algorithm could estimate the position and number of the emitters at the same time through the grid search technique. Simulation results verify the effectiveness of the algorithm on multi-target location based on multiple location points and the better localization performance of the Gaussian type kernel function. [ABSTRACT FROM AUTHOR]

Objective To investigate the relationship between serum bile acid and fetal distress in patients with intrahepatic cholestasis of pregnancy. Methods The clinical data of 120 patients with intrahepatic cholestasis of pregnancy were retrospectively analyzed during January 2007 to October 2013. Patients were divided into mild and severe groups according to serum bile acid value. The information of delivery mode and the incidence of fetal distress were collected. Results There was no statistically significant difference in age of patients between the two groups. The caesarean section rate and incidence of fatal distress in severe group was significantly higher than those of mild patients. Conclusion In the late pregnancy of patients with intrahepatic cholestasis of pregnancy requires close monitoring of serum bile acid value. High-risk patients should be prepared to grasp the opportunity to terminate the pregnancy to ensure maternal and child health. [ABSTRACT FROM AUTHOR]

Objective To study the effects of pepper Artemisia volatile oll on testicular tissue structure as well as serum inhibin B and follicle stimulating hormone (FSH) contents in experimental autoimmune orchitis in mice. Methods Totally 150 adult male BALB/c mice were randomly divided into normal saline group, model group, and low-, medium- and high-dose pepper Artemisia volatile oil groups. The volume fraction of pepper Artemisia volatile oil was 0.938%, 1.875% and 3.375%, respectively. The model was established by unilateral testicular injection of glacial acetic acid method. Each group began gavage 3 days before the surgery, continued gavage after surgery and lasted 24 days. After 3, 6 and 9 weeks, changes in testicular seminiferous tubules on the un-operated side were observed under optical microscope; serum inhibin B and FSH changes were detected by ELISA. Results Serum inhibin B content was sigmficantiy lower in model group, low-dose group and medium-dose group than in saline group 3, 6 and 9 weeks after the surgery (P<0. 05); FSH content was significantly higher than that in saline group (P<0.05). Nine weeks after the surgery, serum inhibin Band FSH contents in high-dose group did not differ significantly from those in saline group (P>0.05). Under the light microscope, the testicular tissue structure in high-dose group returned to normal. Conclusion Pepper Artemisia volatile oil has an antagonistic effect on experimental autoimmune orchitis in mice in the dose-dependent manner. Gavage for 9 weeks after the surgery makes the testicular tissue structure almott recover. [ABSTRACT FROM AUTHOR]

In order to further understand the relationship between the structure and luminescence properties of ZnMgO alloy thin films, the targets for films were prepared by ball milling ZnO and MgO powders, cold pressing, and high temperature sintering. ZnMgO thin films of Mg content ranging from 0% to 8% (atomic number fraction) were prepared by RF magnetron sputtering on quartz substrates at room temperature and annealed at 400 ° in air atmosphere afterwards. The crystal structure of the film was characterized by X-ray diffractometer, the morphology and chemical composition of the particles were observed by field emission scanning electron microscope and the X-ray energy dispersive spectrometer (EDS), the photoluminescence (PL) spectra were measured by fluorescence spectrophotometer. ZnMgO thin film is found to be a solid solution with wurtzite hcp structure. With the increase of Mg content, the morphology changes from approximately round to round and random polygon mixture, which is attributed to the grain thickness of (002) losing its dominance and its growth rate exceeded by (101) and (110). The PL spectrum shows a strong violet peak (390 ~ 393 nm) and a weak near infrared (NIR) peak (758 ~765 nm). With the increase of Mg content, the location of violet peak first blueshifts and then redshifts, while the NIR peak redshifts. All peak positions redshift and the intensity increase significantly after annealing at 400 ?. The generation and variation mechanism for the violet and NIR peaks before and after annealing are discussed. [ABSTRACT FROM AUTHOR]

The artificial environment control experiment was conducted at Nanjing University of Information Science and Technology from November to December 2022 using strawberry "Selva" (Fragaria ananassa) as the test material, and the strawberry seedlings were selected and placed in the artificial climate chamber for low-temperature treatment in mid-November when they reached the flowering stage. Three levels of temperature were set: 5°C (daily minimum)/15°C (daily maximum), 10°C/20°C and 15°C/25°C (CK). The treatment duration was 3d, 6d and 9d. The kinetic parameters of photosystem fluorescence induction and protease activity of strawberry leaves were measured under different days of low-temperature to understand the effect of low-temperature on photosystem fluorescence and protease activity of strawberry leaves. The effects of low-temperature on the fluorescence properties of strawberry leaves and the activity of protease were measured. The results showed that (1) the light energy absorbed per reaction center (ABS/RC), the energy dissipated per reaction center (DIo/RC) and the energy captured per reaction center for QA reduction (TRo/RC) of strawberry leaves increased with decreasing temperature and increasing duration in the range of daily minimum temperature from 5°C to 15 °C, but the energy captured per reaction center for QA reduction (ETo/RC) increased with increasing duration. The energy captured per reaction center for electron transfer (ETo/RC) decreased. ABS/RC and DIo/RC were 1.367 and 1.718 times higher than those of CK for the treatment with daily minimum temperature of 5°C for 9d, respectively. TRo/RC increased by 7.42%, 14.66%, 25.27%, and 30.48% for daily minimum temperature of 10°C for 3d, 6d, 9d and daily minimum temperature of 5°C for 9d, respectively, compared to CK, while ETo/RC decreased by 1.71%, 20.39%, 26.65%, and 28.32%, respectively, compared to CK. The quantum ratio for thermal dissipation (φDo) increased significantly with the duration of low-temperature, 12.34% and 25.32% higher than CK at a daily minimum temperature of 5 C for 3d and 9d, respectively. However, the quantum yield for electron transfer (φEo) decreased with the prolongation of low-temperature, and decreased by 27.92% and 43.02% compared with CK for 3d and 9d, respectively. (2) The activities of superoxide dismutase (SOD),catalase (CAT), peroxidase (POD), and malondialdehyde (MDA) of strawberry leaves gradually increased with the decrease of temperature and the extension of the duration of low-temperature. The activities of SOD and POD reached the maximum at the daily minimum temperature of 5C for 6d, which were 1.39 and 2.03 times higher than those of CK, respectively, while CAT was less affected by low temperature. The MDA content was the highest at the minimum daily temperature of 5°C for 9d, which was 2.10 times higher than that of CK. The study showed that low temperatures will damage the structure and function of the photosystem of strawberry leaves, the photochemical efficiency decreases, the energy dissipated by heat increases, resulting in a decrease in the ability of PS II donor side to provide electrons, and the electron transfer efficiency decreases, strawberry leaves will stimulate the antioxidant system in the body, and produce a certain resistance to the environment, which shows that the activities of SOD, POD and CAT have different degrees of increase compared with CK. However, the cell membrane structure was still damaged and the membrane permeability increased. [ABSTRACT FROM AUTHOR]

In order to study the effects of high temperature and high humidity on the chlorophyll fluorescence characteristics in the center of photosystem II of cucumber leaves at the seedling stage, a cucumber variety "Jinyou 101" was used as the test material to conduct an artificial environment control experiment. A three-factor orthogonal test was designed, and a high temperature conditions was designed with 4 levels: 32°C (the highest daily temperature)/22°C (the lowest daily temperature), 35°C/25°C, 38°C/28 °C and 41°C/31°C.The air relative humidity was designed with three gradient levels: 50%±5pp (percent point), 70%±5pp and 90%±5pp. The treatment duration was designed with 4 levels: 3d, 6d, 9d and 12d, and 28°C/18°C, 50%±5% was used as the control (CK). The kinetic parameters of chlorophyll fluorescence induction in cucumber leaves under different treatments were determined to understand the effect of high temperature and high humidity on the chlorophyll fluorescence characteristics of cucumber photosystem II center. The results showed that: In the daily maximum range of 32-41°C, with the increase of temperature, the normalized curve ΔVt of fast fluorescence kinetics of cucumber leaves at seedling stage showed obvious convexity in J and K phases. The curve of ΔVt at 41°C was the most obvious (ΔVJ=0.24848, ΔVK=0.09116), and both ΔK and ΔJ were >0. The normalized curve ΔWt exhibits a distinct K peak. However, the normalized curve ΔVt of 70% relative air humidity treatment had no obvious bulge (ΔVJ=0.00421, ΔVK=-0.0031). With the increase of temperature, the energy dissipated per unit reaction center (DIo/RC) and the quantum ratio used for heat dissipation (φDo) both increased, reaching the highest at 41°C. Compared with CK, DIo/RC and φDo increased by 85.24% and 18.96% respectively at 41°C. The quantum yield for electron transfer (φEo) and the energy for electron transfer captured by unit reaction center (ETo/RC) were reduced, reaching the lowest at 41°C, which were 49.64% and 38.05% less than CK, respectively. Under the high temperature stress, ETo/RC and φEo were higher than 50% and 90% in the treatment of 70% relative air humidity. Compared with the 50% treatment, the ETo/RC and φEo increased by 28.69% and 47.04% under the 70% relative air humidity treatment, and increased by 18.36% and 12.02% compared with the 90% treatment. Research suggests that high temperature destroys the structure and function of the photosystem of cucumber leaves, resulting in a decrease in photochemical efficiency. The relative air humidity of 70% can reduce the damage of high temperature on the donor side and acceptor side of photosystem II, and relieve the damage of high temperature on the photosynthetic mechanism of cucumber leaves. [ABSTRACT FROM AUTHOR]

In order to solve the problem of lack of loosing and conditioning and tobacco block, an optimized scheme of inlet air device of resurgence machine was suggested. 1) resurgence inlet air system was improved, location of inlet air was under tablet entrance vibration slot instead of above, and equipment of drainage was added at bottom of hot-air pipe; 2) hot air director was designed and added, direction of hot air was changed from horizontal to downward and offside. The validation test results indicated that loose rate of tablet enhanced 0.28%, loose rate of reconstituted tobacco enhanced 7.12%, weight of tobacco block reduced 89.8%, steam consumption reduced 14.95%. [ABSTRACT FROM AUTHOR]

Objective: To investigate the effects of glucagon-like peptide-1 (GLP-1) on nitric oxide (NO) release in human umbilical vein endothelial cells (HUVECs) and whether GLP-1 receptor (GLP-1R) and GLP-1 (9-36) are involved in mediating the effects. Methods: HUVECs were incubated in the presence or absence of GLP-1, exenatide (a GLP-1R agonist) or GLP-1 (9-36), or incubated in the presence of GLP-1 with or without exendin (9-39) (a GLP-1R antagonist) and/or sitagliptin (inhibitting formation of GLP-1 [9-36]). NO content in the cell culture medium was measured by adopting nitrate reductase method. Results: GLP-1 dose-dependently promoted NO release in HUVECs. Exenatide and GLP-1 (9-36) both increased NO release. Exendin (9-39) and sitagliptin both partly blocked the effects of GLP-1. Conclusion: GLP-1 may have directly protective effect on endothelium by increasing NO release in HUVECs through GLP-1R-dependent and GLP-1(9-36)-related pathways. [ABSTRACT FROM AUTHOR]

In the beam-space algorithm, when the pointing error of the beam-space beam desired signal falls on the edge of the main lobe of the beam, the performance is always becoming deteriorated. Therefore, this paper used the beam rotation vector of the linear domain constraints to improve the performance of beam-domain adaptive algorithm, meanwhile, in order to apply in the implementation of the project and reduce the computational volume, it employed the space covariance matrix inverse to approach to the power of the signal subspace according to the signal eigenvalues were much greater than the noise characteristic value of the theory. The algorithm not only reduces the beam's computational quantity and has better signal ratio and robustness characteristics. Simulation experiments' results prove that the correctness and the superiority of the modified beam-space eigenspace-based algorithm, having a certain practical value of the project. [ABSTRACT FROM AUTHOR]